March 1, 1920.] 



THE INDIA RUBBER WORLD 



363 



t contactor is omitted, and the motor is siarted by a fused knife 

 switch mounted on the panel with an operating handle outside 

 of the case. The handle can he locked in the open position to 



Ofen. Closed. 



Altomatjc Enclosed Motor St.\rter Oper.med by Handle or 



PUSH-BuTTOXS. 



j)revent unauthorized operation. Interlocks prevent lifting the 

 cover while the switch is closed or throwing the switch with 

 the cover opened. This starter is for use with small direct- 

 current motors not rated over 2 h.-p. at 115 volts or 3 h.-p. at 

 -230 volts. (The Cutler-Hammer Manufacturing Co., Milwaukee. 

 Wisconsin.) 



HYDRAULIC ACCUMULATOR SYSTEM. 



The illustration shows a type of hydraulic accuinlaior in- 

 stallation that is representative of those in use in up-to-date 

 rubher factorie>. It is a hich and low pressure hydraulic ac- 

 cumulator and 

 intensifier sys- 

 tem that is au- 

 tomatic in op- 

 eration and fur- 

 nishes both 

 high and low 

 pressure to a 

 battery of hy- 

 draulic presses 

 without atten- 

 tion from the 

 operators other 

 than the ma- 

 nipulation o f 

 the regular 

 press operating 

 valves. 



The high and 

 1 o w pressure 

 triplex hydrau- 

 lic pumps that 

 i' u r n i sh the 

 water supply 

 against the 

 pressure of the 

 accumulators are motor driven. Each pump is automatically 

 controlled from an electric switchboard which stops the pump 

 when the accumulator load is raised to a predetermined point 

 and again starts it wlien llu- accunmlator recedes below this 

 point. 



This system has the capacity fur developing any pressure from 

 ^-<l to 10,000 pounds per square inch. (The Hydraulic Press 

 Mnnifacturing Co.. Mount Gilead. Ohio.) 



MACHINE FOR MAKING BIAS FABRICS. 



Cotton and silk cloth of ordinary square-woven type in which 

 the warp and tiller threads arc at right angles, may be converted 

 into bias fabrics cm tht- machine here shown. The warp threads 



Hydraulic .Accu.mi 



remain in their original position but the tillers are inclined at an 

 angle other than 90 degrees to the warp. This is efltecled by two 

 series of interconnected grippers that grip the fabric edges and 

 being mounted on endless chains, one of which is retarded, the 

 tiller threads, while remaining parallel, are drawn into an angular 

 position with regard to the warp; the width of the web being 

 slightly reduced. 



The bias web thus produced is impregnated with rubber solu- 

 tion on a spreader, after which two plies are superposed with the 

 bias threads at opposite angles and united by passing through 

 pressure rollers of a doubling machine. The result is a strong, 

 iion-ravcling bias fabric suitable for tlic manufacture of rain- 



s; : ft 1 ■■ ^iv ■. -' i "■' -I 



coats, auto fabrics, 

 possiblv, tire fabrics 

 York.)' 



Bias Fabric Machine. 



imitation leather, mechanical goods, and 

 (.Mbert Herzog. 118 East 25th Street. New 



A FLEXIBLE COUPLING FOR MILL LINES. 



TIii> coupling is designed for 

 use on shafts where absolute rigid- 

 ity is not desired and a certain 

 amount of flexibility is required. 

 The device consists of two sprock- 

 ets rigidly fixed to the ends of 

 the shafts to be connected. An 

 endless chain encircles these 

 sprockets, thereby coupling the 

 ends of the shafts but affording 

 sufficient lateral play to accom- 

 modate ordinary differences in 

 shaft alincment. 



The smallest coupling of this 

 type transmits less than one-quar- 

 ler of a horse-power, vvhile the 

 largest weighs three-quarters of 

 n ton and transmits 3200 horse- 

 power. (I. H. Dexter Co., Goshen. 

 New York.) 



rm^. 



Clark Flexible Coupli.vg. 



A SAFETY INTERLOCKING NUT AND BOLT. 



This is a bolt with a nut that it is said Avill stay locked 

 under all conditions and may be easily unlocked if required. 

 The principle of construction may be seen in the accompanying 

 illustrations. The washer has two extending inner lugs which 

 slide in two lateral grooves extending the full length of the 

 threaded portion of the bolt. The nut, which in the hexagon 

 type has tlirec or in the square nut. four recesses or chucks 



