750 



Popular Science Monthly 



This brick -conveyor is worked on a similar principle 

 to the familiar cash-conveyor of the department stores 



to the drying shelves ex- 

 tending over the yards. 



The mechanism is so 

 simple that it cannot easily 

 get out of order. It re- 

 quires but little attention 

 and practically eliminates 

 the necessity of employing 

 wheelers and truckers, who 

 are generally considered the 

 most uncertain and annoy- 

 ing labor in the yard. 



In these present topsy- 

 turvey times, when men 

 have to be done without 

 and women have to step 

 more and more into the 

 men's shoes, labor-saving 

 machinery of this kind as- 

 sumes an importance that 

 it never did in the piping 

 times of peace. 



Brick Manufacturers Find This a 

 Great Labor Saver 



THE conveyor system illustrated in 

 the pictures has been installed in 

 many brick-yards in various parts of the 

 country, and, as the owners of the yards 

 willingly testify, has proved a valuable 

 labor-saver. It is estimated that for a 

 yard with a capacity of about 50,000 

 bricks the installation of this conveyor 

 would mean a saving of four or five 

 men. The system is simple and, 

 in a general way follows the idea of 

 the cash and parcel conveyors used 

 in many department stores. Two 

 endless wire cables, running parallel 

 and supported by 

 grooved wheels form the 

 basis of the conveyor. 

 The cables are stretched 

 taut so as to support the 

 conveyor planks and the 

 bricks placed upon them. 

 The tension of the ca- 

 bles can be regulated 

 by a screw. By an in- 

 genious switch arrange- 

 ment proi'ision is made 

 for the turning of cor- 

 ners by the conveyor 

 planks loaded with 

 bricks and for the dis- Aluminum case 



tribution of the Vjricks in airplane fla 



Protecting the Aviator's Camera 

 Bellows from the Wind 



TAKING photographs from an air- 

 plane with an ordinary folding 

 pocket camera is utterly impossible if 

 the leather bellows is not protected from 

 the wind, as the aviators are exposed to 

 the terrific draft created by the revolving 

 blades. Add to this the breeze created 

 by the machine flying along at 

 A^ ninety or one hundred miles an 



/v^^v hour and you can see why, if an 

 ordinary folding camera is un- 

 folded in an airplane, the wind 

 immediately flattens the 

 leather bellows. 



To overcome this diffi- 

 culty and to be able to 

 procure a series of aero- 

 nautical photographs 

 John Edwin Hogg, of 

 Los Angeles, California, 

 constructed the alu- 

 minum bellows shield 

 illustrated. It worked 

 . perfectly, and with it he 

 procured the photo- 

 graphs desired. The 

 shield weighs four 

 ounces, and when folded 

 can be carried in the 

 prevents wind coat pocket. It may be 



ttening bellows very quickly adjusted. 



