September 1, 1916.] 



THE INDIA RUBBER WORLD 



661 



teet and 9;^ feet long respectively, and 24 inches in width and 

 height. A four-foot block can be planed in two minutes so that 

 the labor is a <;mall item. [The Louis G. Freeman Co., Cincin- 

 nati, Ohio.] 



THE UTILITY AIR HOIST. 



Progressive methods in modern rubber mills require progres- 

 >ive equipment to successfully carry out in practice the principles 

 ot progressive manufacture. Labor saving is the constant watch- 

 word of the executive, 

 superintendent and de- 

 partment foreman, who 

 know the value of time 

 and energy-saving equip- 

 ment. 



.•\ir hoists are not new, 

 but the application of this efficient 

 and economical power to various 

 uses in rubber mills is of compara- 

 tively recent date. The hoist illus- 

 trated here is specially designed for 

 removing covers and lifting tire 

 molds in and out of the heater?. 

 Solid tire and hose molds are han- 

 dled quickly and safely with this de- 

 vice and in removing calender and 

 mil! rolls its adaptability is in- 

 stantly apparent to all practical men. 

 The hoist is shown suspended from 

 a trolley and travels on a track con- 

 structed from I beams that are hung 

 from the ceiling over the machines 

 the hoist is intended to serve. Air 

 is supplied from the main line and 

 the operator controls the movement 

 of the piston by a conveniently placed 

 handle that operates the valve lever. 

 [Utility Manufacturing Co., Cudahy, 

 Wisconsin.] 



MACHINERY PATENTS. 



VBLCANIZING TUBING OR HOSE IN FIVE HUNDRED FEET LENGTHS. 



IN the manufacture of rubber tubing or jacketed hose the usual 

 procedure consists in first forming the interior of rubber stock 

 which is then semi-cured and the jacket braided or woven about 

 the tube. The hose is then 

 vulcanized by admitting 

 steam to the interior with- 

 out application of heat to 

 the exterior which some- 

 tiniis resulted in poor ad- 

 hesion between the plies of 

 fabric. 



The method illustrated 

 here apparently eliminates 

 the disadvantages of the 

 ■ Id process by -ubjecting both the interior and e.xterior of the 

 hose to the same vulcanizing heat. In the drawing, which is a 

 vertical section, .-) is the vulcanizer shell that is heated by steam 

 pipes B. The pan C, supports the coils of hose D, the ends of 

 which are connected to pipes E and F, through which the vul- 

 canizing medium is introduced to the interior of the hose. This 

 fluid medium is controlled by two valves and a gage G which 

 registers the pressure within the hose. Dry air is admitted to the 

 vulcanizer which is maintained at the required temperature by 

 the steam coils. Thus the tubing or hose is cured in an even 



manner, tlie interior and the exterior portions being subjected 

 to the same vulcanizing temperature. [H. S. Blanchard, New 

 York City, and F. Duesler, Cleveland, Ohio, assignors to the 

 Mechanical Rubber Co., Cleveland, Ohio. United States patent 



\o. 1,190.261.1 



ROLUNG BEADS ON NECKS OF TOY BALLOONS. 



This machine is designed for forming beads on the ends of 

 the tubular necks of toy balloons, with rapidity and without in- 

 jury to the rubber stock. It consists of an aiiiuilar plate or 

 disk that revolves in a horizontal 

 plane, supporting on its outer 

 edge a plurality of forms over 

 which the necks of the ballnou 

 are placed. 



The drawing is a vertical sec- 

 tion showing only one of tliesc 

 form carriers, the method of at- 

 taching to the revolving plate and 

 the cone-shaped roller that forms 

 the bead. The plate A, positively 

 rotated by worm gearing, is sup- 

 ported by rollers B. The spools 

 C are supported by a series of 

 swinging arms D, pivoted to the 

 under side of the plate A. The forms £ support the balloons 

 /• and are rotated at the proper time by sprocket wheels G 

 when brought in contact with the cone-shaped roller H that 

 rolls up the bead on the neck of the balloons as they pass by. 

 Means are provided for properly seating and holding down the 

 forms on the carriers during the action of the bead roller which 

 e.xerts an upward pressure on the balloon neck. [W. A. Bru- 

 baker and F. F. Brucker, Akron, Ohio. United States patent 

 No, 1.1<52.383.1 



TER'S VERTICAL PRESS VULCANIZER. 



Hydraulic press vulcanizers of this type usually comprise a 

 shell in which the tire molds are placed, a removable head with 

 some sort of quick opening and tight closing device and a hy- 

 draulic ram or rams for 

 raising or lowering the 

 molds, and clamping them 

 against the head. 



Gammeter employs a 

 single ram that simultane- 

 ously raises and lowers 

 the molds and the head, 

 against which the former 

 are clamped by action of 

 the rain while a specially 

 designed packing ring ef- 

 fectively seals the joint be- 

 tween the shell and head. 



The drawing on the left 

 is a partly vertical section 

 and side elevation of the 

 press in position for charg- 

 ing and discharging. On 

 the right is a similar view 

 showing the head locked 

 in position and the molds 

 being forced against the head by the ram during vulcanization. 



The base A supports the hydraulic cylinder B in which recip- 

 rocates the ram C provided at its upper end with a platen D. 

 The vulcanizing casing E is supported by a base ring that is 

 attached to the upper flange of the ram cylinder, and /•" is a ring 

 secured to the top of the casing, provided with alternating lugs 

 and spaces, corresponding to those of the head G, Depending 



