270 



THE INDIA RUBBER WORLD 



[Feuruarv 1, 1917. 



Each press car includes a platform mounted on flanged wheels, 

 upon which the boltless tire molds are stacked. The under part 

 of the platform is formed with a shallow cylinder of relatively 



large diameter in which reciprocates a hydraulic ram. The 

 mushroom-shaped press head D connects with the upper end of 

 the ram by a screw joint so that it may be removed when the 

 molds are being loaded or unloaded from the car. 



In operation the press heads being removed, the molds are 

 stacked on the cars and connected to the internal pressure supply 

 line. The heads are then lowered, the stems traversing the 

 interior of the mold stack, and screwed to the ends of the rams. 

 Pressure is thus successively applied until the molds are com- 

 pletely closed, when the cars are run into the heater and pressure 

 is applied to the interior of the tires. The vulcanizer head is 

 then closed and the tires cured in open steam. [John R. Gam- 

 mete'r, Akron, Ohio, assignor to The B. F. Goodrich Co., a 

 corporation of New York. United States patent No. 1.210,926.] 



TUBE MAKING MACHINE. 



Inner tubes for tires or tubes for making rubber bands are 

 made on this machine from a strip of uncured rubber sheet. The 

 accompanying illustration, which is a side elevation of the ma- 

 chine partly in section, 

 shows the frame A sup- 

 ported on suitable legs 

 B B. The endless car- 

 rier belt C delivers the 

 rubber strip D on to 

 the machine and carries 

 away the finished tube 

 E at the back of the machine. 



The tube forming strip is doubled and the edges are cemented 

 by a device on the left not shown in the drawing. On entering 

 the machine the strip is directed to a vertical plane by a guide F 

 and then passed between vertical rollers G. On emerging, it is 

 received between two horizontal rollers H. which flatten the strip 

 in a horizontal plane with the cemented edges butted together. 

 The tube then passes over a raised bed / and under four rapidly 

 moving percussion hammers / which weld the edges of the tube 

 together. Within the tube and directly under the hammers is a 

 floating mandrel which separates the walls of the tube as it 

 moves over the anvil. The tube then passes between the hori- 

 zontal delivery rollers K, and deflected by idler roller L, it is 

 removed from the machine by the carrier belt. [John R. Gam- 

 meter, Akron, Ohio, assignor to The B. F. Goodrich Co., a cor- 

 poration of New York. United States patent No. 1,210,455.] 



SAFETY GUARD FOR WASHERS AND MILLS. 

 This invention has for its object an improved guard especially 

 applicable to grinders, mixers and washers and which will afford 



effectual means for pre- 

 venting the hands of the 

 operative being crushed 

 between the rolls without 

 interfering with the feed- 

 ing of the material. 



Referring to the draw- 

 ings, the guard com- 

 prises a member A. con- 



sisting of a length of wood, having attached to its ends triangular 

 pieces B, whereby it is supported at an inclination on the side 

 francos C , C in which the rolls D, D are mounted. Conveniently 

 the triangular pieces B, B may be such that the member A lies at 

 an inclination of about 45 degrees. 



The two guards are arranged on the side frames C, C so that 

 the members A, A incline outwardly with their lower edges 

 appro.xiniately central of the rolls D, D and at an appropriate 

 distance of about two inches, above the peripheries of the rolls. 

 The spaces between the lower edges of the guards and the rolls 

 are sufficient to permit the passage of a normal thickness of 

 material under treatment. If the operator who is feeding the 

 material to the rolls should pass his hands too far over the top 

 of either roll, they will come into contact with the corresponding 

 guard and his attention will thereby be called to the fact. 

 [L. Gaisman and S. Dreyfus, both of Manchester, England, 

 British patent No. 101,325.] 



MACHINE FOR MOLDING HOLLO-W RUBBER ARTICLES. 



This machine forms hollow articles of rubber as doll bodies, 

 rubber bulbs, etc. It is simple, easily adjustable, and can be 

 controlled manually. By means of a hand lever attached to the 

 vertical spindle the male 

 die A can be raised or 

 lowered. The two 

 hinged portions forming 

 the female die B are con- 

 nected by toggle joints 

 to the bases C, which 

 are fastened to the lower 

 platen D by set screws, 

 or can be adjusted by 

 screws E. 



As the upper die is 

 forced downward, the 

 two segments of the 

 lower die are forced to- 

 gether, and thus the arti- 

 cle is shaped. As the 

 upper die is released the lower one opens, due to the pressure 

 of the spring F. The two dies can be changed very easily, and 

 a variety of hollow objects may be produced. [Karl Jeffers, 44 

 Udestedtstrasse, Erfurt, Germany. German patent No. 638,713.] 



1,208,777. 

 1,209,161. 

 1,209,162. 



1,209,202. 

 1,209,308. 



1.209,536. 



1.209,607. 



1.209,671. 



1.209,731. 



1,209.764. 



1.209.779. 

 1.209,903. 



1,210.001. 



OTHER MACHINERY PATENTS. 



THE UNITED STATES. 



.Apparatus for making annular tuUes. S. C. Hatfield, Baltimore, 

 Md. 



Fabric distorting device for tire building machines. H. J. Hoyt, 

 assignor to Morgan & Wright — both of Detroit. Mich. 



assignor to Morgan 



Vulcanizing apparatus. H. J. Hoyt, 

 Wright — both of Detroit, Mich. 



Tire mold. H. Kaflovich, New York City. 



Apparatus for molding objects by pressure. E. Lanhoffer, 

 Toissy, France. 



Tire builder's tool. C. A. Arnold, assignor to The Hartford 

 Rubber Works Co. — both of Hartford, Conn. 



Mold for non-skid treads- J. H. Michelin. New Brunswick, 

 • assignor to Michelin Tire Co., MiUtown — both in New Jersey. 



Form for vulcanizing footwear. M. H. Clark, Hastings-Upon- 

 Hudson, N. Y., assignor to Boston Rubber Shoe Co., Boston, 

 Mass. 



Footwear pressure cure apparatus for vulcanizing. C. Lee. as- 

 signor to The Goodyear's Metallic Rubber Shoe Co. — both of 

 Naugatuck, Conn. 



Pressure cure vulcanizing apparatus. E. W. Rutherford, Nau- 

 gatuck, Conn., assignor to Boston Rubber Shoe Co., Boston, 

 Mass. 



Tire building apparatus, R. L. Taft, assignor to The Hartford 

 Rubber Works Co. — both of Hartford, Conn. 



Machine for constructing, laminated cohesive interwound bands 

 having varying limits of elasticity. L. A. Subers, East 

 Cleveland, Ohio. 



Wire-covering machine. F. S. Randall, Jersey City, assignor 

 of one-third to I. I.. C. Gooding, Summit, and one-third to 

 C. V. Yates, Jersey City — both in New Jersey. 



