THE INDIA RUBBER WORLD 



349 



the slitter wheels, and is severed into strips of the desired 

 widths, which go forward side by side to the rewinding mandrel. 

 The cutter gives a clean, smooth slit, does not stretch the edge 

 of the fabric, and can quickly be set for spacing. Strips of any 

 width or any combination of widths may be cut at the same 

 time. The apparatus for rewinding the goods following the 

 slitting is of the drum type, and is so arranged that the result- 

 ing rolls are very firm and compact. Provision is also made 

 for removing a wrapper or separate cloth from the material 

 previous to slitting, and for reinserting a wrapper in the re- 

 wound coils as they are rolled up after the slitting process. 

 A variation is the making of slitting wheels with zigzag edge, by 

 which strips can be cut which w'ill not fray at the edges, and 

 are especially suitable for surgeon's bandages, with the result 

 that at one process, goods can be converted from piece form into 

 finished bandages. [Cameron Machine Co., Brooklyn, New 

 York.] 



HAUD OPEHATED CLOTH OR RUBBER TESTER. 



This is an inexpensive fabric tester that is now being used 

 to advantage in the rubber trade, particularly in the manu- 

 facture of footwear. The resulting tests obtained by this 

 very simple machine are extremely accurate. 



As illustrated, it is 5 feet long, and is mounted on a strong 

 oak back-board, fitted with three malleable brackets for 

 fastening to the wall. Built 

 on the dead weight or swing- 

 ing pendulum principle, it has 

 no springs to affect the test 

 and therefore remains accurate, 

 but can be easily calibrated 

 without the use of special ap- 

 paratus. The clamps are de- 

 signed to make various styles 

 of tests and the open space 

 back of the flat gripping sur- 

 faces allows any number of 

 tests to be made on large sam- 

 ples without cutting or strip- 

 ping. Special clamps can be 

 applied for making rubber tests 

 which would make this ma- 

 chine very useful in checking 

 results. 



The test is made by turning 

 the large hand wheel which 

 moves the stretching screw 

 through powerful, machine-cut, 

 spiral gears. The pendulum or 

 weight lever is suspended from 

 two finely-made, self-aligning, 

 hardened steel ball-bearings which insure against friction and 

 unnatural resistance. The dial registers in pounds and the 

 test is shown by the pointer which remains at the position of 

 the break until rest by the handle suspended from the curved 

 quadrants. 



Very little effort is required to make tests and experience 

 has shown this to be a very quick machine for practical work. 

 All parts of this machine are built to United States standards 

 and are interchangeable. [Henry L. Scott & Co., Providence, 



Rhode Island.] 



.•\PR0N Feed for Mixing Mills. This latest invention of Wel- 

 ton's automatically holds both edges of the apron sufficiently 

 tight to effect positive forward movement when lumpy or sticky 

 compounds are mixed. [P. E. Welton, Cuyahoga Falls, Ohio. 

 United States patent No. 1,173,625] 



Two patents granted to the same inventor, for similar devices, 

 were described in The Indi.\ Rubber World, June 1, 191S. 



MACHINERY PATENTS. 



GAMMETER'S PNEUMATIC TIRE CORE REVOLVING MACHINE. 



'T"HE heavy cast-iron cores used in making tire casings require 

 *■ scraping and brushing after each molding operation to re- 

 move accumulations of adhering rubber. Moreover, a coating of 

 thin rubber cement is finally applied to the side faces 

 of the core where the beads are to be placed. These 

 very necessary operations are greatly facil- 

 itated by a recent invention, herewith illus- 

 trated and described. 



The frame comprises an upright A 

 and base B, provided with bearings C 

 and D, in which revolve two core-sup- 

 porting rollers E and F having V- 

 shaped peripheries — the 



former being belt 

 driven, and the latter an 

 idler. Between these 

 rollers is mounted a Y- 

 shaped core rest G, that 

 is raised and lowered by 

 the treadle H. The up- 

 per guide roller /, with 

 a V-shaped periphery 

 supports the core in an upright position, and is journaled on 

 the swinging arm J, which can be raised and lowered to accom- 

 modate cores of various diameters. 



The machine is operated by first raising the core rest, which 

 is done by the foot on the treadle; then the core is rolled up 

 the incline by the operator and placed on the idler roller and 

 core rest. The latter is then lowered until the core rests on 

 the driving roller, when the upper guide roller is lowered into 

 operative position to maintain the core upright. The operator 

 then starts the machine and performs the various cleaning oper- 

 ations with the use of scraping and brushing tools, while the 

 core is being rapidly revolved. A coating of thin rubber cement 

 is finally applied to the side faces of the core, which completes 

 the operation. [John R. Gammeter, Akron, Ohio, assignor to 

 The B. F. Goodrich Co. of New York, New York City. United 

 States patent No. 1,172.883.] 



BOOT TOP LAYING AND CUTTING MACHINE. 



Cutting and laying boot top linings, and in fact all other simi- 

 lar operations in footwear manufacture, are invariably per- 

 formed by hand. This hand labor is laborious, tedious and costly, 

 and besides, the product is often defective, due to the well-known 

 fallibility of the hu- 

 man factor in manual 

 operations. 



The machine shown 

 in the accompanying 

 illustration has been 

 recently invented to 

 do the work of ap- 

 plying the fabric lin- 

 ing, used to reinforce footwear parts, to the sheeted rubber 

 stock. 



Side frames A and B support the revolving drum C, on which 

 are removably fastened forms or dies similar to the one shown 

 at D. 



A sheet of stock is fed between the drum and the pressure 

 roller E, one of the fabric linings being previously placed in the 

 form D. The drum is then revolved and passes under the roller 

 E, which firmly presses together the lining and superimposed 

 rubber sheet, passing under heated roller F. As the drum con- 

 tinues to revolve, the boot top with attached lining is cut out 



