430 



THE INDIA RUBBER WORLD 



[Ai'Ri: 



New Machines and Appliances. 



The Cruickshank Band Cutter. 



RUBBER BAND CUTTING MACHINE. 



JUST HOW MANY POUNDS of Stationer's rubber bands are manu- 

 factured yearly in the United States is a matter for conjecture; 

 however, the figures must certainly be in millions of 

 pound.s. .A iiriinary factor in the quantity production of 

 this ubiquitous article is 

 the band cutter shown in 

 the accompanying illus- 

 tration. It will cut bands 

 in standard widths from 

 1/32-inch to 3 inches 

 and in length up to 13 



The operation is as fol- 

 lows : The circular strips 

 or tubes are fed in the 

 machine and over the 

 apron, and are flattened 

 out by a roller located 

 just in front of the three 

 revolving knives which 

 come successively in con- 

 tact with a stationary 

 knife. 



If short hands are re- 

 quired, as many as five 

 or six strips may be run 

 through at once, produc- 

 ing from 1,800 to 2,800 

 hands per minute. A set 

 of change gears is provided for cutting bands of the various 

 widths. The machine runs from 120 to 160 r. p. m. (Makers, 

 The Cruickshank Engine Co., Providence Rhode Island. Selling 

 agents, Birmingham Iron Foundry, Derby, Connecticut.) 



THE CURTIS AIR COMPRESSOR. 



It is an indisputable fact that oil is detrimental to pneumatic 

 tires and tubes, but when necessary they are inflated wherever 

 most convenient and without a thought of possible injury due to 

 impure air. 



The compressor shown in the accompanying 

 illustration is provided with a special splash- 

 oiling system that prevents oil from entering 

 the cylinder, thereby avoiding the 

 . presence of oil in the air supplied to 



the tires. 



Other features are: high and low 

 level oil-filling gages that indicate the 

 amount of oil in the crank case; fly- 

 wheel in fan for cooling the cylinder ; 

 inspectable valves; hand unloader 

 facilitating starting compressor under 

 tank pressure, and a head that is 

 easily removed. (Curtis Pneumatic 

 Machinery Co., 30 Church street. New 

 Oil-Proof Tire Inflater. Vork City.) 



HERMAN TIRE-BUILDING MACHINES. 



One of the salient features of these tire building ma- 

 chines is in the method employed in mechanically centering the 

 fabric on the core while the carcass is being constructed. 



By means of a novel centering device, all fabric leading from 

 the rolls is not only automatically centered, but marked and 

 guided into position without aid or assistance from the operator. 



This, together with improved tension rolls, gives perfect control 

 and diininishes edge trim to a minimum. 



This machine is manufactured in two models, the Special be- 

 ing designed and constructed for making Ford sizes only, while 

 the two-unit or L'niversal will build any size and style up to 



Herman Special Tire Builder. 



and including live-inch. Due to the convenient arrangement of 

 the tension rolls, two widths of fabric are always in position to 

 the core on either machine, thus it will be seen that no move- 

 ment is necessary on the Special, while on the Universal two 

 automatic movements, in which no time is lost to the operator 

 or builder, supply the necessary widths of fabric with which to 

 construct the larger sized tires. (The Herman Tire Building 

 Machine Co., Columbus, Ohio.) 



ELAPSED TIME RECORDER. 



This device is a time meter or elapsed time recorder and by 

 its use the necessity of subtracting the starting from the flnish- 

 ing time of jobs is entirely eliminated. One machine will com- 

 pute and print elapsed 

 time for any number of 

 workmen who are engaged 

 upon any number of jobs, 

 irrespective of the order 

 of starting and ending 

 of the operations. It 

 will also print the 

 time of day a job is 

 started and flnished. 

 These records may be 

 made on cards or 

 tickets of various sizes 

 and shapes, which can be fur- 

 nished by any printer. 



One type of the machine prints 

 elapsed time in hours and min- 

 utes, another type in hours and 

 tenths of an hour and there are 

 also diff'crent models for computing elapsed time for maximum 

 periods of twelve, twenty- four, and sixty hours. ( Calculag^raph 

 Co., 30 Church street. New York.) 



