1918.] 



THE INDIA RUBBER WORLD 



87 



THE HIBBS FABRIC-STRIPPING MACHINE. 

 Herewith is illustrated a machine which provides an inex- 

 pensive method of reclaiming tire fabric. The cost of stripping 

 is low, as one man can 

 strip the fabric from 

 1,500 to 2,000 pounds of 

 tires per day with this 

 machine, since it removes 

 the fabric without cut- 

 ting off the beads of the 

 old tire so that only the 

 toe of the bead need be 

 removed. Any number 

 of plies of fabric may be 

 stripped from the tire at 

 one time. 



The machine is in- 

 stantly adjustable from 

 the largest to the small- 

 est tire by turning a 

 crank. The mdtor base can Ije adjusted so that the slack in 

 the driving belt may be taken up without cutting it. The clutch 

 is of e.xtra large single disk type and the driving gears are en- 

 cased in heavy gear guards. The fabric shaft has a 12-inch 

 forward and backward movement. The machine usually has a 

 one-horse-power, two-phase motor, but can be furnished with 

 a single-phase motor. Tlie shipping weight is about 700 pounds. 

 (The C. D. Hibbs Rubber Co., Fort Worth, Texas.) 



A TIRE REBUILDING AND RETREADING MACHINE. 



It is a known fact that many carcasses outwear the tread, and 

 if retreated will continue to be serviceable for many miles. 



Moreover, tire users are 



urged to conserve their 

 tires, and government 

 regulations having elimi- 

 nated many sizes, there- 

 fore the demand for re- 

 built tires is increasing. 



The machine here pic- 

 tured is of the enbloc 

 type, having three one- 

 third circle cavities with a 

 cross section of S'-t, 4% 

 and Syi inches, respec- 

 tively, and will handle any 

 size of tire, from 28 by 3 

 to 38 by SVz inches. The 

 cavities are deep enough 

 to cure the tire over the 

 beads when desired. The 

 ends of the cavities are 

 provided with semi-curing 

 flanges, to guard against 



any breaks in the cure. The boiler is self-contained, using gas 

 or kerosene as fuel to generate steam. 



The raised centers of the side of the cavities are so constructed 

 that with the use of air bags and standard bead molds a section 

 can be cured in the same manner as in regular sectional molds 

 in rib, or with a pad in either plain or non-skid design. 



In retreading, the time required for cure in each case is 

 that recommended for the repair material used. The pressure 

 on the tread is secured by pressure against the sand bag placed 

 in the tire. 



The machine is adapted to build rib-style, non-skid or plain 

 treads ; also tread bands may be cured on and half-soles and 

 double treads applied quickly and efficiently. (Zwebell Brothers 

 Co., Milwaukee, Wisconsin.) 



MACHINERY PATENTS. 



CALENDER FOR TIRE TREAD STOCK. 



"T^HIS machine is a modified four-roll calender designed for 

 ■•• the purpose of producing tire tread stock. The calender 

 is provided with pressure rollers that act on the stock before 

 passing between the rolls, and forming a slight bank in front 

 of each roller, thus elim- 

 inating air bubbles, equal- 

 izing thickness, increasing 

 density and reducing sur- 

 face imperfections in_ the 

 calendered rubber strip. 



The batch of rubber A 

 is fed between rolls B and 

 C and as the strip of rub- 

 ber passes under the first 

 banking roller D, pressure 

 is exerted on the stock, 

 forming a slight bank on 

 the surface of the strip. 

 After passing between 

 rolls C and E, the strip 

 is subjected to the action 

 of the second pressure 

 roller F that forms a 

 slight bank on the surface 

 of the stock which now passes between rolls E and G where it 

 receives its final form and finish. (William Kearns, assignor 

 to Morgan & Wright, both of Detroit, Michigan. United States 

 patent No. 1.277,729.) 



N* 



OTHER MACHINERY PATENTS. 



THE UNITED STATES. 

 ,276,041. Expansible mandrel. J. L. G. Dykes, Chicago, III, 

 ,276,127. Thread-controlling mechanism for machines for s 



balloon fabric. D. S. Se 



Uni, - ------ 



76,436. Fabric-spreader for tire-making machi] 



iubbe 



.276,592. 

 ,276,634. 

 ,276,942. 



,278,099. 

 ,278,133. 



487,160. 

 487,225. 

 487,510. 



W. C. Stevens, as- 

 -both of Akron, O. 



Tire mold. J. A. Swh 



Expanding metal core. W. A. Hirsch, Avalon. Pa. 



Machine for molding tire covers on rotatablc core. F. H. 



Mercer and H. F. H. Blease— both of Melksham, England. 

 Apparatus and method for making hollow rubber articles. R. 



Beynon, Chicago, III., assignor to The Mechanical Rubber 



Co., New York City. 

 Repair vulcanizer. J. F. Schneider, St. Louis, Mo. 

 Lifting tongs for tire cores. O. Grosvenor, New York City, 



assignor to Morgan & Wright, Detroit, Mich. 

 Sewing and cementing machine. F. A. Brackett, Manchester, 



N. H.. assignor to W. H. McElwain Co., Boston, Mass. 

 Valve. J. R. Gammeter, Akron, C, assignor to The B. F. 



Goodrich Co., New York City. 

 Tire-vyrapping 



ine. P. E. Wclton, Cuyahoga Falls, C, 



asMgjiur lu Birmingham Iron Foundry, Derby, Conn. 



Traveling buck for ti're-building machines 

 kegon, Mich. 



Griffin, Mus- 



THE DOMINION OF CANADA. 



Mold-alining device for vulcanizing press. The Canadian Con- 

 solidated Ruhher Co., Limited. Montreal. Que., Canada, as- 

 signee of H. J. Hoyt, Detroit, Mich., U. S. A 

 THE FRENCH REPUBLIC. 



H. B. Wallace. 



Electrica 



an improved pneumatii 

 . P. Michalet. 



N" 



PROCESS PATENTS. 



THE UNITED STATES. 



,276,411. Process for manufacturing rubber tires. R. B. Price, 



assignor to Rubber Regenerating Co.— both of New 



\ork City. (Original application divided.) 



. Process of making a flat, endless belt. T. R. Gammeter, .\kron, 



O., assignor to Tlie B. F. Goodrich Co., New York City. 



THE DOMINION OF CANADA. 



cr toys. J. E. .\bler, Guelph, 



NEW ZEALAND. 



Process tor repairing imeumatictire covers. H. F. Williams, 

 Belfast street, Christchurch. 



