December 1, 1920 



THE INDIA RUBBER WORLD 



179 



particularly when it is necessary to shut down an entire section 

 of pipe lines for repairs. 



The pipe clamp shown in the accompanying illustration is used 

 to stop all holes and splits, in pipes. It is used either temporarily 

 until the pipe can conveniently be replaced, or permanently. 



The clamp is simple to attach. First the packing 1 is laid over 

 the split or hole 2. Then the clamp 3 is fitted over the packing and 



A Novel Pipe Cl.^mp 



tightened by bolls 4, The clamp should never be used on pipes 

 while under high pressure.^Yarnall-Waring Co., Philadelphia, 

 Pennsvlvania. 



GASOLINE OPERATED TRACTOR FOR RUBBER FACTORIES 



.■\ new development in industrial haulage equipmeni is a 

 tractor operated by a gasoline engine, instead of electric motor 



lj.\M Ll.NK i.\ULsTKI\L Tk.\( Ti R 



and storage batteries. It is a specially designed all steel ma- 

 chine, built to withstand hard use and abuse. It is claimed to 

 have sufllcient capacity to move freight cars and still operate 

 economically on small loads, thus offering a wide diversity of 

 usefulness. 



The motor is four-cylinder, four-cycle, rating 22.5 h. p., capa- 

 ble of delivering 40 h. p. at 2,000 r. p. m. The tractor is supplied 

 with a battery type ignition with spark lever control at the steer- 

 ing column, si.\-volt starting motor, 1^-inch carbureter witli 

 dash choke control for easy starting, and a nine-gallon gasoline 

 tank amidships at the cowl. The gasoline is fed by gravity' to 

 the carbureter. The tires are solid rubber. 



Under average conditions the trailing load is from 10 to 15 

 tons, although in exceptional cases the motor can be utilized 

 for spotting loaded freight cars. — The Towmotor Co., Cleveland, 

 Ohio. 



MACHINE FOR LACING BELTS 



This is a small portable machine weighnig 24 pounds which can 

 be carried to the broken or stretched belt, enabling the operator 

 to relace the belt without 

 removing it from the shaft. 

 It is made of steel and all 

 parts are practically un- 

 breakable. 



.\ square belt end is in- 

 serted into the slotted open- 

 ing and. by working the 



.\ ''Clipper" Jcixt 



■'Clipper" Belt L.\cer 



levers, the hooks are pressed into it and left Hush with the sur- 

 face of the belt. These hooks come on cards and are easily 

 placed in position by throwing back the center and side heads 

 which hold the clinch bar. The hooks are pressed into both 

 ends of the belt. Then they are interlocked and joined together 

 with rawhide or a pin. In taking up a stretch, the necessary 

 length is cut ofif, the hooks pressed in, and the two ends joined 

 to.o,ether. The loss of time for the entire operation is not sup- 

 posed to be more than 3 minutes. 



The machine is claimed to handle wider belts than 6 inches, 

 by simply repeating the operation. On narrow belts, the card 

 of hooks is cut to the required length. — Clipper Belt Lacer Co., 

 Grand Rapids, Alichigan. 



SINGLE ROLLER FEED FORCING MACHINE 



Roller feeding of rubber stock to tubing or forcing machines 

 has not been developed in American rubber manufacturing prac- 

 tice, although it has met with favor abroad, especially in British 

 factories. The usual form has embodied the use of two rollers 

 placed over the stock feed opening of the tuber. This has al- 

 ways been a source of considerable trouble, which has now been 

 entirely eliminated in the newest design, a cross-section of which 

 is shown in the illustration. 



Section- of Single Roller Feed for Si.mpi.ex Forcing Machine 



The material being fed is placed between the single feed roller 

 and the "scroll," by which is meant the stock screw of the tuber. 



