Like Water from a Hose
A method of Spraying Asphalt by hand—good for tight places
ANEW type of nozzle, made by a Boston manufacturer, is designed for spraying hot asphalt-binder in road construction or on sidewalks, where the use of a large motor-truck outfit would be unsuitable. The hot
fluid is uniformly sprayed at a temperature of 350 degrees Fahrenheit and at a pressure of forty pounds per square inch. The high pressure causes the asphalt to permeate all the voids between the stone, which it is intended to bind. The portability of the apparatus makes it possible for this to be accomplished easily. With a motor-truck it would be almost impossible to reach the corners. The sprayer can also be used for patching holes in bituminous roads and for applying roof coatings. The asphaltic material is heated in the usual manner and put
under pressure by means of a gasoline-driven rotary pump. It is then carried to a special nozzle by means of a hose. The nozzle has a fixed turbine center which disposes of the liquid in such a way that a dense uniform spray is obtained. This prevents the material from being too thick in some spots and too thin in others. The turbine in the nozzle is stationary, yet removable, and gives a part of the liquid passing through it a rotary motion. This portion is driven out through the orifice of the nozzle by the central driving jet.
The Soldier’s Belt Is a Chandelier. It Even Holds His Flashlight
A GLANCE at the accompanying photograph shows how completely equipped the United States soldier is for emergencies. His
hands are free, his gun is ready and he is literally “girded for the fray.” The belt that “girds” him is an important part of his uniform. Only the wearer knows all that it carries attached to it. It is not the ordinary cartridge belt, but is the one used while on special duty or for comfort and convenience around the camp. The special feature which this photograph shows is the flashlight fastened to the belt and held in position to throw its light di-
rectly ahead. The man on sentry duty will see the advantage of this arrangement, as well as the busy boys in camp who must often clean their guns after nightfall.
Clearing out Sewer Pipes with Compressed Air
BRADFORD, England, has a sewér five miles long with a drop of 70 feet in distance. The grade is not uniform. As the sewage is loaded with heavy, solid matter, the flow was not what it should have been. The city did not want to resort to pumping because of the expense. One of the city engineers hit upon the idea of using compressed air at a pressure of eighty pounds and discharging it at regular intervals into the sewer. The plan was carried out with great success. It has been done for some time now without a recurrence of the difficulty.
Another Automobile Kitchen to Follow Our Boys at the Front
FEEDING our soldiers is an important matter, and the problems it presents have interested many of our
inventors. The traveling kitchen, run by motor power, is a very natural product of the times. There are several types. One, which the United States War Department is considering, is shown in the accompanying illustration. The kitchen with its big kettles, large enough to cook food for two hundred and fifty men at one operation, is mounted upon an automobile truck, which can also carry reserve supplies to feed two hundred and fifty additional men.
For the chauffeur a protected cab is provided in front and the cook may attend to his work in the kitchen even while the truck is moving from place to place, by standing upon a step in the rear. To prevent his being jolted off on rough roads a hand rail has been provided to which he can hold.