564 



THE INDIA RUBBER WORLD 



ling the operator to work on either side, or it may be thrown 

 out, permitting the spider and core to turn freely. 



The lever system on the foot-operated stand is made of bar 

 steel, counterbalanced with a weight, thus doing away with 

 springs and the inconvenience they cause. The lever can be 

 changed from the right to the left by reversing the connecting 

 rod and allacliiiif; ihe frmt \c\cv to the lug on the opposite side 



FoOT-OrERATED. 



Juii.Di.vG Stands. 



Hand-Operated. 



of the stand thus permitting the operator to work on either the 

 right or left side of tlie stand. (Pechstein Iron Works, Keokuk, 

 Iowa.) 



PORCELAIN FORMS FOR DIPPED GOODS. 



The forms used in the manufacture of dipped goods are 

 now largely made of porcelain and require specialized knowl- 

 edge in order to produce an article that will be satisfactory in 

 every respect. 



The difficulty with an 

 ordinary porcelain form 

 is its liability to craze 

 after being in use for 

 some time. This objec- 

 tion, however, has been 

 finally overcome and vit- 

 reous forms are now 

 made that will withstand 

 the steam or acid cure 

 without crazing. They 

 are supplied in the proper 

 size and are easy to main- 

 tain in a cleanly condi- 

 tion. 



Forms for rubber 

 gloves, finger-cots, nip- 

 ples, toy balloons, and in 

 fact almost any special 

 shape used in the dipped 

 rubber goods business can 

 be made of porcelain. 

 ilonial Sign & Insulator Co., Akron, Ohio.) 



Porcelain Forms. 



(Th( 



MACHINERY PATENTS. 



'X'HIS machine feeds powdered ingredients to a mi.xer and col- 

 •*■ lects and returns to the mill surplus material until all of the 

 charge has been worked into the rubber. 



The materials are contained in the hopper 5 that discharges 

 by gravity into a pipe line 6, to which other material hoppers 

 may be connected. The fan 10 forces the materials that are de- 

 posited in pipe 6, through pipe // to a hopper /.', from which 

 the discharge falls on one of the rolls b. 



The surplus powder that falls between the rolls is collected 

 in the center of an endless belt 13 and is drawn through nozzle 

 19 by suction of the fan, back to the upper part of pipe 6 and 

 again delivered to the hopper 12. (William Jameson, assignor 



Dry Powder Feeder for Mixers. 



to The Fisk Rubber Co., both of Chicopee Falls, Massachusetts. 

 United States patent No. 1,302,053.) 



N' 



,302,660. 

 ,303,256. 

 ,303.485. 

 ,303,492. 



,304,995. 



190,462. 

 190,466. 



124, 277. 

 124,365. 



489,188. 

 489,277. 

 489,431. 



OTHER MACHINERY PATENTS. 

 THE UNITED STATES. 



,301,148. Pressure bag for use in tire-casing vulcanization. M. A. 



Marquette. Springlield, assignor to The Fisk Rubber Co., 



Chicopee Falls— both in Massachusetts. 

 !. Electric repair vulcanizer. O. C. Dennis, Wilmettc, 111. 

 I. Apparatus for retread vulcanizing. E. Harris, Los Angeles, 



Calif. 

 I. Repair vulcanizer. 



said McElroy ass 



Paul— all in Minn 

 !. Tire-making machine. L. P. Arnold, Norwalk, Conn, 

 t. Machine for extruding rubber, etc. T. Stratton, Bowden, and 



E. A. Claremont, High Legh— both in England. 

 Machine for making pneumatic-tire flaps. E. G. Hulse, .^kron, 



Ohio, assignor to Kelly-Springfield Tire Co,, Jersey City, N. J. 

 Tire core. D. A, Clark and C. E. Lowe, assignors to The 



Clyde E. Lnwe Co —all of Cleveland, Ohio. 

 Machine for grooving and finishing tires. R. H. Keaton, San 



Francisco, Calif. 

 Stock-rack for tire-building machine. C. Kuentzel. Youngstown, 



assignor by mesne assignments to The Goodyear Tire &- 



strips. J. T. 



tubes 

 Lister, Cleveland, O. 



THE DOMINION OF CANADA. 



.Apparatus for vulcanizine rubber. The American Rubber Co., 

 assignee of A. L. Comstock— both of Boston, Mass. 



Apparatus for manufacturing rubber boots. The Canadian Con- 

 solidated Rubber Co., Limited, Montreal, Que., assignee of 

 C. J. Randall, Naugatuck, Conn. 



THE UNITED KINGDOM. 



.\ppar.ntus for molding liutt-endcd tubes. Dunlop Rubber Co., 

 C. Macbeth, and R. H. Cunningham, 14 Regent street, West- 



Machine for converting str 

 tubes, including means i 

 Marks, 57 Lincoln's In 

 Tire & Rubber Co., 11 



rubber into tubular form for inner 

 cleaning off chalk, etc. E. C. R. 

 Fields, London. (The Goodyear 

 East Market street. Akron, O.. 



Apparatus for applying hard rubber layer to foundation band 

 of solid tires. Dunlop Rubber Co., C. Macbeth, and E. Sulli- 

 van, 14 Regent street, Westminster. 



THE FRENCH REPUBLIC. 



Apparatus and process for waterproofing threads, fabrics, and 



fibrous materials. A. O. Tate. 

 Improvements in the manufacture of cellular tires. J. C. 



Improvements in the apparatus and process for manufacturing 

 pneumatic tire casings. J. M. Gilbert. 



PROCESS PATENTS. 



THE UNITED STATES. 



N' 



balloons. 



,302,405. 

 ,304,694, 



lining with goldbeaters' skin, el 



in-Funiess, assignor to Vicker 



in England. 

 Forming elastic fabric with curved edge. S. T. Metz, Brooklyn, 



N. Y., assignor to Victory Corset & Girdle Co., Inc., a New 



York corporation. 

 Construction of pneumatic tire casing. W. L. Mitten, Daven- 



Manuf'acture of strand fabric. M. A. Marquette, Springfield, 

 assignor to The Fisk Rubber Co., Chicopee Falls — both in 

 Massachusetts. 



Vulcanizing tires. F. T. Roberts, assignor of one-half to R. H. 

 Rosenfeld— both of Cleveland, O. 



THE UNITED KINGDOM. 



Strengthening airplane fabrics with lining of waterproofed fabric. 

 Portadown Weaving Co. and T. J. Greeves, Annagh Facti 

 Portadown. County Armagh. (Not yet ' ' 



to abridgments of specifications, 1915.) 



cpted. Appendix 



