Sir: The volunteer fire department here has purchased a resuscitator from the E & J Resuscitator Co., Chicago, Ill. By way of explaining the apparatus to the community we request permission to reprint an article that appeared in your July 1947 issue called “Machines That Breathe For You,” by Herbert Johansen.
YOU hear it every day . . . “the scientific approach.” One man says he’s “scientific” when he gets enough right answers from Lady Luck. Another waves away science as theory, says he is “practical." He’s the man with the built-in boat in his cellar.
Heading through a canyon in a darkened cockpit, this pilot has nothing to worry about except better night vision for other fliers. Cockpit and canyon are make-believe, as shown in inset; they were devised by Boeing to test instrument-illumination systems.
. . . How to teach your family the Seven Keys to Safety
Pulling from the Curb
How to Spot Trouble Before Trouble Comes
Stop for a Talk
Meet the Road’s Five Common Trouble Makers
John F. Stearns
THE driver of a suburban bus outside Detroit was rolling along at a moderate rate the other day when suddenly he hauled on the wheel and swerved. The maneuver was puzzling. Except for some snow-covered cars parked by the right-hand curb, the road was clear.
1 Learn to judge conditions: traffic, visibility, road surface, mechanical condition of cars, physical condition of drivers. 2 Don’t forget that it isn’t how fast you go, it’s how fast you can stop. Stopping = braking distance + your reaction distance.
THANKS to a home workshopper’s ingenious machine, galvanized pipe can now be turned out automatically, in volume, with a bright, even coating of zinc. Paul Ely worked two years on a model in his basement shop, then showed it to his employers, the National Tube Co. Enthusiastic, they halted work on a different unit in favor of Ely’s.
Winged Wheels Add Lift. When this plane lets down its wheels, it also sprouts an extra pair of wings. Patented by Jack S. Conner, of Los Angeles, Calif., the stub wings are designed to give increased lift for landings and take-offs. Hinged in two sec tions, they fold half against the fuselage and half into the under part of the main wing.
THIS massive, 100-ton-capacity road hog has an underpinning of 42 truck-tired wheels. It measures 75 feet from the tip of its truck to the tail of the trailer. In the photo above it is shown carrying an 80-ton Diesel-powered drag line and shovel, with plenty of room to spare.
THIS startled MP has seen everything. Luckily there wasn’t any traffic to snarl up when the Jap inventor drove his tiny, electric-powered car down a Tokyo street. Named the “Baby Star,” it is about onefifth the size of an ordinary automobile.
X-RAY photographs such as this scientist is examining, are the “fingerprints” of minerals, and like those of human beings, no two are alike. On file at Harvard’s Berman Memorial Library are photographs of almost all of the possibly 2,000 known minerals, ready to identify unknown specimens.
PICKING messages out of the air instead of criminals off the streets, this new-type service car speeds up home delivery of telegrams. When a main Western Union office receives a telegram for you, it is ultrashort-waved to a “Telecar” assigned to your neighborhood.
How often have you suffered from table wobble? Cheer up, here is a gadget that automatically adjusts table-leg lengths to uneven floors. Inserted in leg ends, the Levelmatics shown above have a piston inside a cylinder filled with GE’s famous bouncing putty (PS, Jan., ’45, p. 97).
THIS novel dry-mining contraption recovered 13 tons of lead from the grounds of a Lewiston, Idaho, gun club in 20 days. It consists of two box sieves rocked by an old washing-machine gasoline motor. A coarse gravel screen in the top box sifts out large stones and weeds.
THIS phonograph needle won’t break records, or even crack them. If inadvertently dropped on your favorite platter, it simply bounces a few times, then settles down in the groove, as shown above. The shock absorber is a tiny nylon bumper connecting the duraluminum shank with the steel-spring needle tipped with precious metal.
HUGE jet and rocket engines enable pilots to race the speed of sound, but a turbine no bigger than your fist keeps them alive while they do it. With a half-ounce rotor whirling more than 100,000 r.p.m., this midget takes air from the hottest part of a high-speed plane, turns it into a nearfreezing blast, and keeps the cockpit from turning into an oven.
Paint Bombs. If paints of various colors were packaged in expendable compressed-gas cylinders like insecticide bombs, anyone could quickly do a neat spray job without fuss and BOTHER.-TOM TENNY. Built-in Washboards. Metal tubs with the front side ribbed in washboard fashion would be a big help to the housewife.
And because they do, new protective alarms and detectors are making it tougher than ever for the bore mobs.
Burglar Alarm Best Insurance
Home Workshop of Crime
SOME of the world’s most expert safecrackers are working overtime these spring nights under the appreciative and approving eye of police departments from New York to California. Whenever they crack a particularly tough safe the peace officers applaud, for these experts are helping battle the biggest crime wave in American history.
IF A rat didn’t gnaw constantly, its gnawing mechanism—a set of sharp incisors curving back toward its throat—would grow back into the throat. As a result, the animal would strangle in as little as a year’s time.
THIS may look like an oversized wheelbarrow—but did you ever see a wheelbarrow climb a hill under its own power? This three-wheeled, power-driven dump truck can take a 1,000-pound wet or dry load right up a 20-percent grade. Called the Prime Mover, the 400-lb. machine, made by Bell Aircraft, can turn in its own length.
DON’T you wish you could clean the windows in your home as easily and quickly as this mobile window washer can make train windows sparkle and shine? Designed by W. H. Gould, superintendent of the Union Pacific’s car department at Pocatello, Idaho, it can clean all the windows of a 12-car streamliner in eight minutes flat.
SOMETHING new under the sun is this novel heliodon that shows the where and when of sunlight as it would affect a building at any time of the day, month, and year —and at any given latitude. The arc-suspended floodlight shown in the picture at left doubles for the sun.
USING the 50,000 lb. of thrust developed by five big rockets, experimenters have sent a “locomotive” hurtling 1,019 m.p.h. down 2,000 feet of standard-gauge railroad track. They had a reason. They wanted to learn if it is possible to reach speeds beyond the 760-m.p.h. of sound at sea level with an earth-bound vehicle that could be controlled.
How to set a 5,200-lb. radar unit on top of a 200-foot-high hangar did not stump engineers at the Navy’s Moffett Field, Calif. They placed the radar on a bobsledlike dolly fitted with big rollers. Then a line looped over the hangar from a winch on the other side hauled the dolly up the wall.
A beam of light now takes the temperature of rocket flames so hot they would destroy ordinary thermometers. The new light-beam instrument, called an absorptionemission pyrometer, is expected to aid research on rockets and rocket fuels.
Nazi Glider Is All Wing. Captured by the U. S. Army, this Horten Model VI glider has been repaired and reassembled in California at the Northrop Aeronautical Institute for aerodynamic studies. Its elongated wing spans 78 feet, but the cockpit is so small that the pilot has to lie prone to fly the 750-pound craft.
NAVY rockets designed to kill are now being reconverted to save lives—as linethrowers, carrying rescue ropes either to or from disabled ships. Coast Guard tests show they can snake heavier lines over greater distances than present devices.
HIGH-SPEED electrons and a tiny electric furnace have been teamed in a new camera that snaps pictures of metals as hot as 2,000°. It was developed by Westinghouse research engineers to study the causes of rust and corrosion in metals and alloys at the extreme temperatures they have to take in jet engines and gas turbines.
YOUR plumbing is a problem only when something goes wrong. Hydraulic engineers of the National Bureau of Standards, however, take plumbing to heart. They want to know just what happens when a toilet is flushed or a drain plug is pulled. To aid their study of plumbing problems, transparent plastic pipes are used in the full-scale home plumbing system shown above.
IF YOU want your valuables close at hand, this floor safe looks like a good bet. Built like a milk can, vanes welded to its sides keep the steel case from turning when buried in a concrete block. When the key is inserted in the safe’s lock, as shown above, the center compartment pops up to permit the circular head to be lifted.
LITERALLY surrounded by work, David E. Lilienthal, busy Chairman of the Atomic Energy Commission, spends most of his time on the business side of a massive, functional workbench that all but encircles him with efficient-looking pigeonholes and plentiful work space.
SWEATING it out in a metal box at more than 250° F., University of California at Los Angeles experimenters have proved that the human body can take temperatures that would cook meat and boil coffee—but only for a short time. The tests are being conducted for the U. S. Air Force to find out how pilots would react should the cooling apparatus fail in the supersonic planes of tomorrow (see Cooling “Hot” Pilots, p. 110).
You get the answer on the first muggy day you wear that natty, new, double-breasted job. But perhaps you’d like to know before you buy. That’s what this wrinkle meter, developed by Monsanto Chemical Co., is for. Ordinary methods of testing the “bounce” of fabrics do not allow for changes in temperature and humidity, gravitational effects, and human error.
The tiny elements used in a great war invention are now ready to go to work in civilian transceivers.
Tubes Tiny but Tough
STEPS TOWARD POCKET BROADCASTING
Ear Aid First to Use New Printed Circuit
Smaller Tubes Mean Lighter Planes
CARRYING a complete broadcasting station in the palm of his hand, a radio engineer walked out of his laboratory at the Bureau of Standards in Washington the other day, talking as he went down the stairs and out of the building. His voice came to us from a loudspeaker in the room he had left, as clearly as if he were still there.
THAT’S not a medieval castle perched up on a mountain peak, above left. It’s a wireless-telephone relay station on the top of the 9,738-foot Zugspitze, highest mountain of the Bavarian Alps, near Garmisch, Germany. One of three between Munich and Frankfort, the station has been released for German use and is manned by five German technicians. Above, at right, is a close-up of the rear of the station’s antenna.
ENGLAND’S pea-soup fogs often blanket railroad signal lights. Now a British engineer can “hear” the signals by means of a horn that blows in the locomotive cab before he reaches a signal. Inductors (seen in center of track, left, above) activate a magnetic mechanism (seen suspended below center of locomotive truck, right, above) that blows the horn.
EVER watch the birth of a baby chick? Well, here’s a novel device that lets you see all at a minimum of inconvenience to both you and the chicks. Swamped with requests to witness the hatching of chicks, the Ketay Hatchery, of Huntington, N. Y., came up with this transparent incubator.
EVEN at high speed (1,800 r.p.m.), there is little vibration in this new 37-inch-long Diesel engine that weighs only 607 lb., yet develops 15 hp. A decompression chamber eases hand cranking and standard gear housings allow a selection of starting power.
IN OPERATION the twin masts of this new oil derrick rise to the height of a 12story building. Yet the 18-ton, 123-foot steel structure can be telescoped and moved from well to well in a 63-foot long-trailer-size package. Shell Oil Co. engineers, who developed the new rig, estimate that its mobile feature will save an average of $5,000 in the cost of drilling a single oil well.
BORROWING a barrelful of war-refined knowledge about radio and radar, U. S. scientists have come up with a brace of systems for making transport flying as safe and systematic as railroad operation. One system is called TRICON (for TRIple COincidence Navigation).
THIS track-riding monster picks snow up and melts it to clear big railroad terminals. Pronged teeth on the spiral sweepers in front whip the snow from the tracks to a pair of conveyer belts, which carry it to a 16,000gallon tank (behind the conveyers in photo) for melting.
ONE answer to a shopper’s prayers is this miniature, two-person convertible, called the Towne Shopper, soon to be produced by the newly formed International Motor Car Co. Designed for economy, it is priced at $595 f.o.b. San Diego and promises 45 to 50 miles to the gallon at speeds up to 50 m.p.h.
MORE than 400,000 Americans are shelling out from one to five dollars apiece to dip their hands into a monthly, mail-order grab bag. What will come out each month no one knows until the wrapping is off. All they know is that it will be some gadget representing the latest mechanical effort to make life a little easier, safer, or more fun.
The parka-clad paratrooper is a new kind of soldier. He can jump in a blizzard and fight in a freeze.
Two-a-Second Bail Out
George H. Waltz
SGT. F. G. Brown is one of a new kind of soldier in Uncle Sam’s Army. Besides being a crack air-delivered infantryman, he now is winterized and has added a good many new cold-weather fighting tricks to his already full bag of military know-how.
SOUTHERN fruit growers can now fight frost without getting smoke in their eyes. The pall of smoke pouring from ordinary smudge pots and orchard stoves plays no part in protecting the fruit, says Floyd Davis, of Denver, Colo., inventor of the smokeless orchard heater shown at right.
IF YOUR railroad ride is smoother today than it was during the war, thanks may be due this new ballaster (at left, above) that automatically tucks in ties to make for an easier-riding roadbed. Close-up (at left, below) shows how stone, gravel, or cinder ballast is fed from car above and rammed down by two sets of 16 tamping shoes to straighten a crooked tie.
WITH double parking on top, this new “haulaway” truck loads up with nine Crosley station wagons, three more than was possible with older equipment. Three of the cars ride inside the trailer’s steel framework. Six more are stowed in a double row on the upper deck.
A NEW spraying partner of DDT has been developed by the American Cyanamid Co. When DDT is used on plants and field crops, it kills insects that feed on mites. But then the new insecticide, O, O-diethyl O-pnitrophenyl thiophosphate (called Thiophos 3422 for short) takes over and kills the mites.
RISING and setting of the sun, moon, planets, and starry constellations are realistically depicted upon the ceiling of a darkened classroom by a half-pint planetarium just placed on the market. It gives the same sort of dramatic show, on only a slightly more modest scale, that costly multilensed projectors offer thrilled spectators in the famous planetarium buildings of the world’s great museums.
THE Pan-Tec Microscope above is designed to fill the gap between highpriced instruments and toys. Said to be optically adequate for the most exacting low and medium magnifications, it is equipped with a substage condenser. Two eyepieces and two objectives give a choice of 24, 48, 96, or 192 diameters.
ABOVE is part of something new in ham radio—a single-sideband transmitter. Usually, the sidebands occupy the space on both sides of a radio signal’s carrier wave: eliminate one of them and two stations can operate where only one could before.
WHEN Signal Corps test engineers at Fort Monmouth, N. J., say it’s going to snow, it’s so. They ought to know: they make their own—indoors. These man-made blizzards are whipped up in a new climatic chamber the size of a four-room house, big enough for several observers to watch a variety of signal equipment under test.
Applying atomic magic to aid medicine and research, radiochemists duplicate nature’s elements and create new ones.
THE OLD AND THE NEW IN "ELEMENTS"
Varieties of Elements Discovered
NEW CHART OF THE ELEMENTS
Alden P. Armagnac
AT Oak Ridge, Tenn., the United States Atomic Energy Commission has gone into the business of manufacturing synthetic gold. The atomic pile is the Philosopher’s Stone, long sought by the ancient alchemists, which has the 24-carat touch.
THIS modern Aladdin’s lamp doesn’t need magic to talk; its “voice” is built in. As the man in photo above, at left, talks into a microphone, the sound waves are changed into electrical waves and fed into the “talking lamp” and reflector outside the window.
THERE’S not much point in keeping your watch in an ice tray as shown above, except to prove that new nonfreezing lubricants developed by Cities Service Co., enable it to tick away in sub-zero weather. But polar explorer and winter motorist alike will benefit from these special lubricants, some of which remain fluid at 70° below zero.
How smooth is an electric-razor shave? That’s what Schick Electric Shaver engineers are finding out with this gadget. As the razor’s shearing head clips whiskers at 8,500 r.p.m., motion appears to stop when the disk held in the technician’s hand is revolved at the same speed.
Electric clock motors may cost only 25¢, give 10 millionths of one horsepower—yet they keep perfect time.
Runs at Constant Speed
Off to a Bad Start
Frequencies Must Be Controlled
Benj. F. Bailey
A50,000-HP. electric motor may drive a big ship, a 5-hp. motor may turn a lathe, and the dentist can do his dirty work with a drill driven by a motor of perhaps 1/100 hp. But what can a fly-power motor do? For one thing, it can drive an electric clock or any other small device that must run at constant speed, such as a meter, recording instrument, or time switch.
IN MANY an American home, the morning’s breakfast eggs are frying on the wing of a bomber that once dropped different “eggs” over Germany and Japan. At the North Island Naval Air Station, San Diego, Calif., obsolete and battered warplanes are being melted down.
BECAUSE taxi drivers have long complained that knee action is costly to keep in service, the Checker Cab Manufacturing Corporation has gone back to a rigid front axle and two semi-elliptic springs in a shortwheelbase model it’s producing this year.
REAR quarter windows in the dluxe and custom cabs of 1948 Dodge trucks allow drivers to back into alleys or up to loading docks with greater ease. They don’t have to crane their necks out the door to look behind them. Another point of interest is the “Air-ORide” seat.
THE late-afternoon highway traffic was heavy. Gus Wilson came to a stop behind the middle-aged convertible that headed the outside lane of cars waiting for the light to turn green. Sitting idle for a moment, he noticed that the driver of the convertible, a fat man with a red face and a redder neck, was staring fixedly at the car alongside his in the inside lane—a cream-colored roadster that featured white-sidewall tires and plenty of gleaming chromium.
SOMETHING new in American motorcycles has just appeared—a two-cycle, one-cylinder Harley-Davidson with such features as a foot shift, handlebar clutch control, and foot-rest bar. Designated as the Harley 125 because piston displacement is 125 cc. (7.6 cu. in.), it weighs 170 lb. and sells at the factory for $295 plus taxes.
HERE’S a gadget that delivers lighted cigarettes to you while you drive. You need only reach over and pull out a small drawer in the lower section of a storage case mounted under the instrument panel. As you pull out the drawer, a cigarette drops into place and is pressed against a selfoperated, fast-acting lighting element.
ON LEVEL roads this control enables you to set the accelerator pedal for any desired speed—and then forget it. It consists of a ratchet and pawl that hold the pedal at the point of farthest depression until released by moving the foot to the left, the ratchet being mounted on a spring-operated hinge.
ALUMINUM jettison tanks obtained from war surplus are used for the bodies of small racers that the E. K. Cargill Company, of Macon, Ga., plans to put on the market. The racer is powered by a two-cylinder air cooled opposed engine that gives a speed of 50 m.p.h. and does 75 miles on a gallon of gasoline.
WOULD you like to stay snugly inside your home and see at a glance from what direction the wind is blowing—at any time, day or night? This remote-reading weather vane will enable you to accomplish just that. At the touch of a button on a dial on your living-room wall, a pointer will report the wind direction outside.
Here’s a birdhouse that’s different, a bit of fantasy right out of the pages of Grimm and Andersen.
YOU can give your workshop a rest from square corners and nicely jointed edges with this unusual project, patterned after the illustrations in children’s storybooks. It’s made mainly of soft pine, which should be fairly free from knots since there is considerable shaping to do.
THESE gleaming metal miniatures make perfect gifts for somebody special, because they represent painstaking craftsmanship on your part. The small sword and three-bladed propeller are distinctive lapel pins, but the sword is readily made as a tie clip instead.
A TRICKY method of assembling clearplastic pieces, using neither cement nor screws, is to hold them together with plastic dowel pins that are fed into predrilled holes while rotating rapidly. The pins are practically invisible since they melt into the adjoining material.
Continuing the series on woodworking methods, this article tells how to get around an edge.
Edwin M. Love
TRUING and surfacing one or both faces of a board—discussed in two previous articles—is the first step in readying the board for use. But before you can consider the stock as having graduated from the rough to the finished class, you have to square and smooth the ends and edges.
MOST hard or cross-grained woods are better prepared for sandpapering if they are first scraped to remove plane marks and other rough spots. A simple scraper blade will do the job nicely, and it is one of the easiest tools to condition. Clamp the blade in a vise and drawfile it with a flat file.
No skill... No fancy tools... No blueprints... BUT...
All Built from Scratch
Simple Tools Do the Job
Ideas Gleaned frm Magazines
You Learn from Mistakes
FROM the little mounds of sawdust and wood shavings that litter my floor has just emerged a reproduction of a ninedrawer 18th Century spice box. It’s crude— but I’m proud of it. The spice box is the latest piece I have completed in a long-term project of making replicas of early American furniture.
ILLUMINATING a small plastic sheet bearing your address will light the way for friends and callers. The one shown is made of ⅜" by 2¼" by 14" stock. Numbers were painted on after the surface was sanded, but engraving clear plastic might be better.
WHEN a particularly cold bathroom needed repainting, I took advantage of the opportunity to improve its insulation. At the ceiling and also 8" below, I cut through the plaster and carefully removed the laths. In the clear spaces a flaky type of rock wool was poured in small quantities and gently pounded down with a weight suspended from a string.
A ROTATING spreader that distributes bagged lime, superphosphate, or disinfectant chemicals is being made by Coburn Manufacturing Co., Whitewater, Wis. Farm practice and health regulations require frequent spreading of lime in dairy barns, and this device cuts the time and labor needed for the job.
BOUND out of Aruba during the war, the tanker Esso Bolivar was torpedoed in the Windward Passage. All that came ashore on the Haitian coast was one lifeboat, empty. Bidding at a public auction, William A. Krauss bought the boat for $22.50. With about $350 for materials (plus some fittings scrounged around Haitian waterfronts), Krauss converted her to the sturdy little schooner vacht shown here.
BESIDES adding a bit of color, the tile that’s attached to the center of this tray has two practical functions. You may rest the teapot on it—or you may use it as a cutting board. You’ll want to buy the tile, as well as the ceramic mustard and mayonnaise jars, before you start construction, and then proportion their holders accordingly.
It gave me a turn to be without a churn when my mother wanted 5 gal. of cream made into butter. Luckily we had an old treadle sewing machine with an electric motor drive attached. I tied two cheese boxes to the treadle, and two 2-qt. fruit jars into the boxes.
EVEN a chain smoker won’t fill up this ash tray in a hurry, for it’s a full inch deep. Made of gleaming brass, it can be decorated with a monogram if you like. On 20-gauge sheet, lay out the body pattern shown. The lines will show up better if the metal is first scrubbed with kitchen cleaning powder.
Makes Coffee for One. With this device you can make coffee a cup at a time Placed over the cup, it operates on the drip principle, hot water seeping through the coffee and a cloth filter. Priced at about $1, it is made by Hartford Products Corp., Chicago.
HERE’S a little pipe vise that will serve its builder well. If the jaws are finished smooth, it can be used for polished tubing. If teeth are cut in the lower jaws, it becomes a regular pipe vise and will grip as well as any you can buy for the purpose.
WHEN thin metal tubing has become dented, it usually can be straightened by one of the methods illustrated here. If a dent occurs in a brass musical instrument where it cannot be pressed out, solder a small loop of wire to the lowest part, tie string to the wire, tie the other end to a piece of wood as in Fig. 1, and bring the metal back to place with a few careful jerks.
ALTHOUGH I have always tried to keep the internal threads of my four-jaw chuck clean, the screws nevertheless become clogged by chips after a while and difficult to turn. I have found that this can be prevented by grinding off the incomplete part of the thread.
Bottoming Drill. Flat-bottom holes can be produced with a bit you can quickly make in any size needed. Select drill rod of the required diameter, or turn it to size. Mill or file one end to exactly half its diameter for a length of ¾" to 1¼". This flattened portion is critical; if it’s more or less than half diameter the edge cannot cut freely.
Midget Drill. A hand-sized electric drill produced by the Wolfson and Fairclough Mfg. Co., Buffalo, can do the work of larger drills but is particularly handy for craftsmen and hobbyists who work in small scale. The unit, priced at about $7, operates on 115-volt, 60-cycle AC at approximately 600 r.p.m. It has a pistol grip, a trigger switch, and a ¼" chuck.
Wolfson and Fairclough Mfg. Co.
Chuck Uses Rubber Insert. In place of the usual spring-held jaws, this new line of chucks from The Jacobs Manufacturing Company, Hartford, Conn., utilizes a single molded rubber triangle to which the jaws are permanently bonded. In one model the chuck is hand tightened on the drill or other tool; in another (illustrated at the upper left) it is first hand tightened, then made machine fast by means of a hex key that turns the cam above the follower.
Wolfson and Fairclough Mfg. Co.
Wolfson and Fairclough Mfg. Co.
Gun-Grip Iron. A soldering iron with a pistol grip is easier to hold and use on certain types of work. An offset tip of the kind illustrated allows the solderer to work from directly above on joints that would be hard to reach with a standard iron. The handle is molded plastic with low heat conductivity. Lenk Manufacturing Co., Newton Lower Falls, Mass., makes the 75watt iron and four interchangeable tips.
Wolfson and Fairclough Mfg. Co.
Calker Snaps on Cartridge
Calker Snaps on Cartridge. A spouted calking cartridge may be slipped into this injector without disassembling the gun. Then the compound is forced out by a pressure plate ratcheted forward by a trigger. The Gibson-Homans Company, Cleveland, designed this low-priced ($1.98) gun chiefly for minor household repairs such as sealing cracks or replacing putty.
GENERAL shop illumination, even when at a fairly high brightness level, is often not good enough at the point of work. I find that portable clip-on lights that can pour on brightness exactly where you need it are an aid to better workmanship, reduce work spoilage, and help prevent accidents.
FREQUENT breakage of very fine drills can be reduced if they are chucked short, as shown above. If the chuck itself won’t permit this, run a ⅛" drill up into the chuck body, thus getting clearance for drill shanks. Very high spindle speeds and good cutting oil also help cut down excessive breakage of these small drills.
SMALL pin vises of the sort shown can be made easier to use, and breakage of tiny drills can be lessened, if you turn yourself little brass finger pads designed to fit freely in the pin-vise handle. As with a jeweler’s screwdriver, the vise is held against the work with one finger while it is twirled.
DESIGNED to fit most inboard and outboard hulls, the rig shown above makes it easy to transport your boat behind a car. At the waterside, the wheels can be retracted inside the hull along the gunwales, hung outside on the oarlocks, or removed entirely and left ashore.
BUILT to turn a full 360 deg. on roller bearings, this tractor blade was designed for all phases of terracing, grading, scraping, bulldozing, and ditching. Intended for oneman operation, it may easily be raised, lowered, or set at any desired angle from the tractor seat, and an adjustable top linkage regulates the bite.
ROTARY files are ideal for punching decorative designs on leather projects. Simply place them on the leather at the desired point and strike the shank a good blow with a hammer. In finishing up a leather knife sheath, I used files of three different types and found the effect they produced to be very attractive.
CONFRONTED by the task of making some five-pointed stars, I laid out a guide like the one above on a sheet of cardboard and then cut it out. By using this, a star of any size can be produced by making a mark at corresponding points on each scale and connecting the points with straight lines.
IT BECAME necessary to wiggle the flush handle of a toilet before the ball valve would seat and stop the water, as the ball rod stuck at an angle in the guide. With 1" strip aluminum, I formed a loop just large enough for the ball rod to slide through and bent the other end around the upright overflow pipe, clamping with a bolt and nut.
ENGINE bearing clearance may be quickly checked with a new method offered by the Perfect Circle Corp., Hagerstown, Ind. It consists of placing a length of round plastic on the bearing shell and tightening the bearing cap. The cap is then removed and the width of the flattened plastic is measured with a scale on the envelope in which the plastic is packaged.
ALTHOUGH staggered stairs may sound like an architect’s nightmare, they’re a practical way of reaching a small upstairs room without utilizing too much floor space. Stairs of this type were often used in the old Spanish missions of the Southwest.
Sound Projector. With a sound head and adapter offered by the Apex Video Company, of Roscoe, Calif., you can add sound to any 16-mm. movie projector, using a radio as the amplifier. Costing less than $60, the unit can be installed by any home-movie fan and readily removed at any future time.
PHOTOGRAPHERS have been scrapping over the 35-mm. camera ever since the candid photo fad of the 1930’s first brought it into prominence. One camp argues it should be left to gather dust on dealers’ shelves. The other, while admitting certain limitations, contends that it will produce topnotch work if properly used.
GUIDED by wartime needs and the ingenuity of parts designers, electronic components are getting to be so tiny that even electrons may soon feel cramped. Elsewhere in this issue you can see what manufacturers have in store in the way of miniature radios, hearing aids, and the like.
FUNCTIONING as an ordinary resistor at low power levels, a fuse resistor developed by International Resistance Co., Philadelphia, opens a circuit in the event of a short or overload. The diagram illustrates one function in the rectifier circuit of an AC-DC receiver.
Player Polarizes Itself on DC. A portable transcription player, designed principally for use in the field by radio and advertising men, features an AC-DC amplifier in which polarity does not have to be checked for use on direct current. It plays recordings up to 16" in diameter at either 33⅓ or 78 r.p.m.
EVERY time a liquid evaporates into a gas, it snatches a definite amount of heat from its container and surrounding air, cooling both below their original temperatures. This law of physical chemistry has long been useful to the human race as a means of cooling foods or drinks.
REMEMBER Grandma’s old red-plush photograph album? If you do, this jewel box may strike a nostalgic note—and a tinkly tune as well, for it has a music-box movement. Housed under clear plastic, the movement can be seen as well as heard. Ideally the lid and bottom of the box should be ½" walnut or other hardwood that can be nicely finished.
DRAFTSMEN and others who do a lot of drawing will find an electric eraser a timesaver. Mine was made from an old electric shaver of the rotating-shaft (not the vibrator) type. Clean and adjust the mechanism if necessary to make the motor run as fast as possible.
FLOORS get stepped on in more ways than one. Not only do we walk all over them, but we rarely take them into account in any decorating schemes. With half a chance, however, the floor can give a new lease on beauty to a commonplace entrance hall, dining alcove, or living room.
ONE way to beat certain material shortages in building is to use sheet aluminum for roofs and outer walls. Now plentiful, the metal is easy to fabricate on the site. It is being used on the West coast for vacation cottages as well as for emergency housing.
FOB handling plaster-of-Paris, dry glues, and similar materials in the workshop, a tiny scoop is just the thing. You can make as many as you need from oval tobacco tins, and have a separate one for each purpose. With a fine-tooth hacksaw blade cut across the bead on the bottom first.
ALTHOUGH the cracked cylinder block above seemed a good candidate for the junk heap, a welding job made it as good as new. The job was done as a demonstration of welding at the Hobart Trade School,. Troy, Ohio. After thorough cleaning, the cracks were chipped to a ⅛" V, and all sides of the loose piece were beveled to form a V with the sides of the opening.
DESIGNED for use with a Jeep or fourwheel tractor, this grass cutting blade may be attached at the front of the vehicle. Operated from the power takeoff, the cutter has a patented driving head that enables the operator to lock the 6' bar at any angle between horizontal and vertical without leaving his seat.
IF YOU have trouble as I did in keeping a screw-in doorstop in place, the idea illustrated above will solve the problem. Cut off the screw flush with the metal base of the stop, and drill and tap for a small toggle bolt from which you have removed the head.
A LARGE blowout patch makes a fine sorting tray for the workshop. It may be spread out for easv examination and selection of small parts, and then can be squeezed into a funnel shape for pouring the parts back into their containers.
Monogram pins of carved applewood, turned out by semiproduction techniques, paid for this man’s $1,000 shop. Here’s how he did it.
W. J. LaFleur
Making money with a home workshop, an idea that has at one time or another appealed to most craftsmen, is an entirely practicable idea—as the thousands who have done so can testify. However, a word of caution is in order: we all differ in skill, determination, temperament, and other characteristics.
TWO shopmade tools that have greatly facilitated the making of carved monograms are the sander and drying wheel pictured above. The former is a small series-wound motor mounted on a standard and wired through a 100-watt bulb to prevent excessive speed.
IN THE new Evinrude “Sportwin” outboard motor, you don’t have to open and close the fuel vent or shut-off, since the carburetor-adjustment lever performs these tasks automatically. Strikingly styled, the motor is of the twin-cylinder, alternate firing type, with improved carburetion.
PHOTOGRAPHS may be dried in about a minute by running them through an automatic ironer eight or ten times. If alternate ends are used, the ironer roll will dry between prints. The procedure is particularly convenient for photographs that are too large for the ordinary drier or blotter.
EVEN if you hold a thumb directly against the blade of a new miniature throatless jigsaw developed by Al Norquist, of Seattle, Wash., the stroke is so short that it’s practically impossible to cut yourself. Inventor Norquist, shown in the lower photo drilling bearings for the saw, spent four years perfecting the safety feature.
WITH house space at a premium, a finished attic deserves to be more than a mere storage place for trunks and old clothes. But no matter how well appointed, an attic bedroom is never really satisfactory until it has attained the dignity of having its own clothes closet.
DESIGNED from an antique lantern, this ivy holder was cut and bent to shape from scraps of tin plate. For the bottom, lay out a 4¼" square and inside this another measuring 3½", leaving a ⅜" margin. Measure back ¼" each way from all corners of the outer square, connect with the corners of the inside square, and score the inside square with a metal scriber.
THE economy of small-tractor operation is combined with the efficiency and power advantage of crawler tracks in this new rearengine tractor being marketed by King Equipment Company, Skokie, Ill. Traction is obtained through a 6" treaded rubber track which provides 120 sq. in. of ground contact.
A FRACTURE in the ceramic base on which an electric heating element is wound can be repaired with water glass (sodium silicate), which will withstand high temperatures. Dilute one part of water glass with four parts of water and brush or drain the liquid onto both faces to be mended.
WHEN his fellow townsmen objected to the noise of his young son’s model airplane, Marty Johannes, of Burbank, Calif., designed the muffler for model gas engines he is shown holding above. Made of aluminum, the 10" long muffler weighs but 3½ oz.
STORAGE drawers for nuts, washers, and other small hardware can be made from a few sardine cans on which the sharp edges have been turned down. Wire loops are soldered to the face of the cans for drawer pulls. Plywood, composition board, or any similar material can be used to assemble the shelves and outer walls, and of course you can group any number in the most suitable arrangement.
HAVING acquired some walrus tusks during my service sojourn with the Eskimos, I made them into a wrist-watch bracelet. Ivory isn’t common, to be sure, but the construction can be adapted to plastic or fine-grained hardwood. Link blocks are cut ⅛" by 5/16" by ¾" and then filed, polished, and drilled as shown.
NEITHER sun nor rain can get at the operator of a tractor equipped with one of these adjustable umbrellas. It can be raised, turned, or tilted to come between the sun and the operator as the tractor moves across the field or the sun moves across the sky.
IN REMODELING or repairing drainage facilities, it is frequently necessary to insert a Y or remove a section of cast-iron pipe. One practical method of opening a run of soil pipe is to cut through it with a cold chisel just above a convenient joint.
A LIGHT-DUTY grinding and smoothing wheel for plastics can be made from an ordinary wooden spool. Mount it tightly on a motor shaft, polishing head, or lathe, enlarging the hole if necessary. A countersunk machine screw driven into a drilled hole acts as a setscrew.
ONCE this new tool is set to the pitch of a roof, it automatically gives the correct marking angles for jack rafters, hip and valley rafters, and similar framing parts. A degree scale is also provided to lay out work for power-saw cuts. Made by Lloyd Crowley, of Salem, Ore., it costs about $11.
WITH a flashlight bulb inside a blown egg, this Easter table favor makes an unusual party decoration. Break away just enough of the shell to clear the bulb, which is turned into a snug hole in a C-shaped tin-plate strip. Modelling clay or weather-stripping seals the juncture.
THE weaker sex, always partial to mirrors, seems particularly fond of this one, which consists of a tiny rectangular mirror in a brass clip shaped to fit a lipstick. Being detachable, it can be quickly transferred to a new lipstick when the old one is used up.
ALTHOUGH cement is commonly used to attach clasps and pocket clips to plastic jewelry and lapel pins, it often gives an insecure bond. It’s better to use the heat-sensitive quality of plastic to anchor the fastening. Heat the end of the clasp with a soldering iron, force it into place, and let it stay without movement until the plastic rehardens.
DESIGNED for easy installation between the back windows of any sedan, a new accessory made by the Aller Manufacturing Company, of Chicago, converts a rear auto seat into a combined play pen and baby bed. Its retail price is about $6.
THIS low-cost, easy-to-operate well driller, which requires attention only at intervals of several hours, works either outdoors or indoors. Operating at approximately 38 strokes a minute, the drill progresses downward while automatically feeding out 60 feet of cable.
JUST plug in this unit and you have several electrical connections from a single outlet. Heavy bus-bar wiring is used internally in the device, which has separate switches for three of the connections. Produced by Ewart, Healy and Koch, InC., of Boston, Mass., it is 4½ by 8 by 1½ inches.
THIS small hearing aid contains its own tiny batteries, but for economy has a connection for plugging in the larger “A” battery shown at left above. The instrument, recently introduced by Sonotone, is made of plastic and finished in rhodium.
PIPE shown above is lined with a plastic material—Saran—that makes it resistant to chemicals, oils, and solvents. Designed to carry corrosive liquids, especially acids, the new pipe and fittings were developed by the Dow Chemical Company.
A BUILT-IN frame counter and a calibrated film plane for accurate focusing are features of new model Bolex H-16 and H-8 motionpicture cameras. The frame counter, shown above in top inset, has two dials, one registering each frame up to 50, the other keeping a cumulative count.
THE molded plastic golf-stick grip finder shown here lines up both thumbs and keeps hands together for a firmer grip. Made of Tenite by Sterling Injection Molding, Inc., of Buffalo, the device, unaffected by perspiration, is attached by adhesive tape.
IF YOUR job or hobby is deep-sea diving or jet-plane piloting, either you’re good or you’re dead. Watchmaking and diamond cutting call for considerable skill, too. But there are dozens of pursuits less exacting that offer something much needed these days: the thrill of accomplishment.