584 



THE INDIA RUBBER WORLD 



May 1, 1921 



circular spruig fits over both of the flanges so that the axial 

 strains between door and shell are supported. 



For the operation of the mechanism of the door, a double lever 

 is provided. The circular spring is guided and supported by 

 four Hanged rollers fixed to the inner surface of the door. The 



oil-heater attachment is used, circulating oil in place of steam, 

 and by this means an average temperature of 500 degrees F. can 



The Ensink Vulc.\nizer He.^d 



spring ring is not a full circle, but is open at the top, bridged 

 by a steel spring which presses the packing tightly against the 

 flanges. In the center of the door is a small cock for testing 

 the internal pressure and safeguarding the operation of the unlock- 

 ing lever while pressure is on. The design of the hinge makes it 

 possible to turn the door away from the front of the vulcanizer, 

 affording ready access. — The Ensink-Hilversum Engineering 

 Works, Holland. Hugh Griffiths, sole representative, 15 New 

 Bridge street, London, E. C. 4. 



TIME PUNCH FOR RECORDING THERMOMETER 



A notable improvement in recording thermometers consists of 

 a simple time-punch device attached to the well-known Columbia 

 recording thermometer, making it a twc-in-one instrument that 

 does double duty. Every 

 fluctuation in tempera- 

 ture is recorded, but the 

 record shows whether 

 the operator in charge 

 has been watching 

 these fluctuations as he 

 should. 



The chief function of 

 the time punch is to 

 prevent negligence and 

 to promote vigilance 

 by checking the in- 

 spection of the record 

 made by the oper- 

 ator, who records his 

 inspection by pressing 

 the button shown in the 

 illustration. This ef- 

 fects a punch mark on 

 the chart of the instru- 

 ment recording the time of observation and regulation of the tem- 

 perature conditions. — The Schaeffer & Budenburg Manufacturing 

 Co., Brooklyn, Xew York. 



B. Time Punch 



DRIER FOR COMPOUNDING INGREDIENTS 



The drier shown in the illustration can be used as a "batch" 

 or a continuous flow drier for powdered compounding ingredients. 



The drier itself is stationary and flights are used to keep the 

 material thoroughly agitated, bringing it up and dropping it on 

 the inside core or heating chamber. As the material drops a 

 strong circulation of air passes through it, which removes the 

 moisture and vapors. 



The apparatus, when steam-operated, requires not exceeding 

 five horse-power. Where excessive heat is required a perfected 



The Lewis Drier 



be obtained. This method is the most easily controlled source 

 of heat known. — The Lewis Drier Co., New York Life Building, 



Kansas City, Missouri. 



MACHINERY PATENTS 

 TIRE-SHAPING MACHINE 



A SHAPED TIRE CASING is produced from a flat band through the 

 use of an apparatus illustrated by Fig. 1. In operation, one 

 edge of the band is held against a fixed abutment towards which 

 the other edge is pressed, while the mid-portion of the band is 

 forced radially outwards. The band A is fited over a drum 

 formed by three rings, between stop rings B, C. The upper ring 

 is held stationary by the hooked ends of arms D, which are piv- 

 oted to the base and also adjustably linked to a movable head. 

 The lower rin^ C is carried on a drum which is fitted on a flange 



Internal Pressure Tire-Casing Machines 



£ of a cylindrical plunger raised by hydraulic pressure. The 

 plunger is fitted with racks which, through pinions engaging the 

 fixed racks, transmit a slower movement to a spider supporting 

 the lower drum ring. An inflatable tube mounted on the middle 



