Popular Science Monthly 



Register for 

 left rear 



spaced along its length on 

 telescoping journals. 

 Each journal carries a 

 hub to which are attached 

 curved radial arms or 

 spiders of similar contour 

 but of varying sizes. At 

 their outer ends each set 

 of spiders carries a con- 

 centric ring in the same 

 plane and these together 

 constitute the face of the 

 registering dial. 



These rings are moved to 

 the left or right of an 

 assumed zero load line drawn 

 from the center stud to the 

 circumference of the casing 

 by means of spur gears on 

 the end of each' flexible 

 shaft which extends through 

 the back of the casing. The 

 spur gears are within the 

 casing and are arranged as Register tor 

 planets around the central ,eft * rorTt 

 stud and in mesh with the 

 corresponding gears carried 

 on it. This gearing is so 

 arranged that the movement 

 of the rings clockwise in 

 reference to the zero line 

 refers to the loads carried on the two right 

 wheels of the truck, looking toward the 

 front, and the counter clockwise turning of 

 the alternate rings refers to the loads on the 

 left wheels. Calibrations on each ring 

 enable the load on the corresponding wheel 

 to be read directly in multiples of ioo 

 pounds or fractions of tons as desired. 



With the dial mechanism remaining the 

 same, the movement of the registering 

 rings may be accom- 

 plished in two other 

 ways in one of which 

 a piston attached to 

 the vehicle frame 

 works in a cylinder 

 substituted in place of 

 the vertical rack on 

 the axle to force a 

 fluid to a second cylin- 

 der having a piston 

 whose rod carries a 

 rack turning the end 

 of the flexible shaft 

 leading to the measur- 

 ing dial. The latter 

 cylinder may be pro- 

 vided with a small 



37 



fluid well with a screw-in 

 piston by means of which 

 the compression of the 

 fluid may be varied for 

 calibration purposes. 



Still another method 

 employs a steel tape 

 attached to the top of 

 the axle near each wheel 

 and carried over a roller 

 on the vehicle frame and 

 thence to a take-up wheel 

 with a spring coiled 

 around its axle and its outer 

 end made fast to the frame. 



Not Even the Space Under 

 This Desk Is Wasted 



HENRY J. WILLIAMS, 

 of Brookline, Massa- 

 chusetts, has patented a 

 filing rack which utilizes the 



R e 9' 5 t er ^? r space under the desk beyond 

 riqrvt front .1 u~c*.u~u tu~ 



rig 

 Register for 

 right rear 



The load carried on each 

 wheel is given on the dial. 

 Above: How the revolution 

 of the shaft is transmitted 



A sliding letter rack utilizes the waste space 

 under the desk. This is locked into place 



the reach of the knees. The 

 rack slides forward when 

 the letters are being filed; 

 then a push by the hand 

 sends it back out of the way. 

 The desk is thus as comfort- 

 able as before, while expen- 

 sive floor space otherwise wasted is made 

 use of. 



The rack consists of a platform which 

 is supported upon waxed strips for guides. 

 The platform can always be reached by 

 the foot and drawn forward when wanted. 

 A light chain on the platform is attached 

 to the rear of the desk so that th« rack can- 

 not be pushed too far forward and the letter 

 files be spilled. 



Two bars are provided in 

 front, which when brought 

 together and locked, prevent 

 the files from being removed. 

 The most popular 

 office desk of the pres- 

 ent day is the flat-top 

 style. Under it there 

 is an unusual amount 

 of space which could 

 easily be utilized to 

 advantage by the in- 

 stallation of such a 

 cabinet or rack as 

 the one described. 

 The material or books 

 are kept free from 

 <lu«t. 



