August 1, 1915.] 



THE INDIA RUBBER WORLD 





New Machines and Appliances. 



TOY BALLOON STRIPPING MACHINE. 



IN the manufacture of toy balloons the operation of stripping 

 the molds l>y hand is verj tedious and is accomplished with 

 difficulty. The illustration shows Edwards' invention Eoi do 

 ing this work mechanically. Referring to the front elevation 



front Elevation 



Side Elevation {Section) 



shown in the illustration. A is the base which supports the frame 

 B, in tlir central opening of which revolves a ring gear c". driven 

 1> the upright shaft D from the driving shaft /:. 



The four rubber covered stripping wheels F are mounted on 

 separate shafts journaled in sliding frames G, that slide in 

 brackets 11 secured to the frame B. The stripping wheels are 

 driven from the ring gear C by bevel gearing and are kept apart 

 by the four springs /. Referring to the side elevation (section) 

 in the illustration, the mold L is shown in the position for strip- 

 ping off the balloon. The cam J revolves with the gear ring 

 and acts on the four bell cranks K and the sliding collar .1/, 

 throwing the stripping wheels together and in firm gripping con- 

 tact with the mold. 



As the mold is pulled outward by the operator tin- springs tend 

 to force the stripping wheels apart, while the cam, acting through 

 the bell crank levers, holds them positively in firm contact with 

 the irregularly shaped mold, and strips off the balloon. [Bruce 

 V. Edwards, assignor to Edwards Engineering & Manufacturing 

 Co. United States patent Ne. 1,142,945.] 



PATTEN'S SOLE CUTTING MACHINE. 



In machines of this class it is often necessary to make an 

 abrupt change at one or two points in the travel of the leader. 

 At such times lost motion or vibration may cause a slight move- 

 ment of the leader resulting in defective cutting of the material. 



This invention provides means for holding the leader im- 

 movable during the travel of the knife and also for accurately 

 registering it when it i< to be held stationary. 



Referring to the side elevation in the illustration, A is the 

 base plate and B the curved frame that supports the operative 

 parts of the machine. Secured to the lower ends of the four 

 vertical rods C are two slide ways that support the slide D 

 to which is fastened a leader E. This co-operates with the knife 

 form F in gniding the knife G throughout the circuit of it- 



tra '1. The form /■' acts as a pi- t to hold down the 



work and is secured to the lower end i tern //. which is 



raised and lowered by the lever G'. Tile knife carrier IV is 

 mounted on the stem // and is swung around the axis of the 



■ d thi ii ual >li vices operated bj thi belt pull 



Referring to the plan - m line 2 _'. « hen a tap i- b< ing cm of th< 

 size for which the opening has been designed, thi leader is held 

 stationary while the knife completes the circuit, in cutting a tap 

 larger than the regular size, as the knife travels in the din 

 oi the arrow from the point J to K the Ii ■ slide are 



-lulled P. the right and while the knife i- passing from L to .1/ 

 the leader and slide are shifted back to the left to their first 

 position. Throughout the remainder of theil n the 



leader and slide are hi Id absolutely Stationary, to insure ac- 

 curate cutting, especially around the point .V. 



When smaller taps are to be cut the leader and slide are 



moved to the left as the knife passes from ./ to K and to 



'.. the right in passing from /. to M. While the leader is 



designed for a middle or intermediate size, it i- also used 



to cut either larger or smaller taps— a different form being 

 used for each size that it cut. 



The rear elevation shows the slide locking device driven 

 by the gear Q that is fixed to the upright shaft R journaled to a 

 bracket bolted to the frame B. The cam \ is attached to the 

 lower end of the shaft R and operates the arm 7 that engages a 



-lotted lug V fixed to ib. leadei slide. The cam is timed to 

 -wing the arm into engagement with the lug when the knife 

 reaches the point M and to hold it firmly while the knife pa 

 from .1/ around A to J. When the knife reaches ./ thi lug is 

 rele; sed while the knife travels from J to .1/. When the wi 



P/anonline 2-2 



shaped arm engages the lug the leader is accurately positioned 

 and firmly held. By means of an adjusting screw the arm T can 

 be adjusted to compensate for wear of the cam, the lug or the 

 arm. [Ernest 1-. ratten, assignor to Wellman < o., United States 

 patent Mo. 1.144.429.] 



