THE INDIA RUBBER WORLD 



413 



New Machines and Appliances. 



AUTOMATIC ELECTRICAL CONTROL FOR CALENDERS. 



THE illusiration shows the installation of an up-to-date 

 automatic electrical calender control equipment, where 

 the calender is used for various classes of work, such as 

 frictioning, skim coating and sheeting tire stock. Each of the 

 above operations is performed at different speeds, and in order 

 to maintain a uniform quality of material it is necessary that 

 the speeds of the rolls during the various processes should be 

 constant. 



Therefore a direct current adjustable speed motor is pref- 

 erable for a calender drive. This type of control is fully auto- 

 matic. It consists of three parts, the main panel, on which is 

 mounted the operating contactors ; the master panel, on which 

 is mounted the field rheostat for speed control with 70 points 

 to insure close speed adjustment, and a push button station, 

 mounted on the side of the calender, from which the control 

 is operated. 



From this station the motor may be started, stopped, or 

 slowed down without stoi'ping for threading in. .\fter once 



The measuring wheel is three-quarters i 

 ference and rests directly upon tlic cloth, ' 

 from slipping by minute pins in the rini. 



1 a yard m circum- 

 hilc it is prevented 

 Should these pins 



result in injury to the cloth, the measuring wlieel can be 

 covered with felt, leather or plush. [Parks & Woolson Ma- 

 chine Co.. Springfield, Vermont.] 



settnig the master controlKi- i"\- aii\ (lr-irr,l -|i, .d, tlic operator 

 can either slow down to tliu tlinaWmg sim'l .ji iU'[i and then 

 start up again and return to the same speed witliout readjust- 

 ment of the control. 



The master field rheostat is provided with a dial stamped in 

 yards per minute, so that the operator always knows the yardage 

 at which he is running. The equipment also provides dynamic 

 braking for quick stopping. The control illustrated is used with 

 a 90-horse-power, 300 to 900 revolutions per minute, 230-volt 

 motor driving a 24 x 66-inch 3-roll Farrell calender. [General 

 Electric Co., Schenectadv, \ew 'S'ork.l 



STANDARD CLOTH MEASURER. 



The extremely simple and low cost cloth measuring ma- 

 chine shown in the illustration can be used to measure almost 

 any fabric or rul)ber-cnvered goods. It is not designed for 

 handling a large and continuous output, but is well adapted 

 for inventory taking or where small yardatte is measured 

 daily or large yardage occasionally. 



The cloth is simply pulled through by hand and, as the 

 measuring wheel is turned, the measurement of the cloth is 

 registered on the dial. The entire measuring mechanism is 

 mounted on a hinged plate so the cloth can be easily intro- 

 duced. An automatic lock is provided to stop the measuring 

 dial when the cloth leaves the wheel. The pointer is set to 

 zero by operating the thumb screw in the center of the dial. 



A NEW INNER TUBE SPLICE VULCANIZER. 



The .Mien air-cooled vulcanizer is one of the newest devices 

 for curing the joint of inner tubes. It consists of a two-part 

 hinged cylinder cored for steam, and provided with heat radiat- 

 ing flanges. It is supported on standards for convenient opera- 

 tion from a bench or table. There are two handles for opening 

 the vulcanizer, and a swinging bolt operated by a socket wrench 

 for tightening the two halves together. The inside of the cyl- 

 inder is bored to exact size of the inner tube. The ends, how- 

 ever, are closed and act as clamps, limiting the air to the con- 

 lined part of the tube. An opening is provided in the lower 

 section of the vulcanizer to accommodate the valve stem. The 

 tube is skived, cemented and placed in the steam-heated cylinder, 

 which is then closed, locked, and the part of the tube wdthin 

 the vulcanizer is inflated against the walls of the cylinder. When 

 the cure is complete the steam is shut off, and after the vul- 



canizer cools do 

 aling flanges, the tube 

 chine Co.. Erie. Peim 



which is greatly facilitated by the heat radi- 

 e is removed from the cylinder. [.Allen Ma- 



SOUTHWARK 260-TON GOOSE NECK TIRE BEAD PRESS. 



.\ six-cylinder tire bead press of the goose neck type is the 

 subject of the accompanying illustration. It is designed accord- 

 ing to the demands of modern tire practice for quality of work 

 and maximum production. 



The cast iron housing is heavily Ijuilt and ribbed to with- 

 stand witliout deflection the full (iressure of 250 tons when applied 

 by the powerful rams. The cast steel ram cylinders are rigidly 



