200 



THE INDIA RUBBER WORLD 



[January 1, 1917. 



VALVE SEAT- 

 VALVE CASING 



VALVE 

 COPPER GASKET 



Tlic joint consists of a ball set in a casing and surrounded by roll the liner passes up over an idle roller E and then under the 

 two non-metallic hard gaskets, which contact both with the cutter and over the table F. This table is long enough to accom- 

 ball and casing, and allow the ball to move in an angular or modate several strips of fabric for inspection or measurement 

 rotary movement, while the two gaskets are held in iilace by prior to being rolled up. 



a lockmg nut. The whole construction is very simple and the The wind-up machine comprises two standards, provided with 



great success of the joints is due to the application of the vertical slots or guides for the journals of the take-up roller G. 

 gaskets to the ball, and the material of which these gaskets are 

 made. 



The joints are made in a large variety of sizes and shapes 

 and they can be applied to almost any condition arising in the 

 manufacture of rubber goods. [Barco Brass & joint Co., 

 Chicago, Illinois.] 



THE SaUIRES BUCKET-TYPE STEAM TRAP. 



In conjunction with vulcanizing presses for mold work, the 

 bucket-type steam trap is generally recommended, if the steam 

 |)ressure is the same for each press, it will be possible to operate 

 several presses on one 

 trap of suitable size, 

 but live presses operat- 

 ing at 80 pounds and 

 five at 60 pounds, for 

 instance, would r e- 

 quire a separate trap 

 for each group. Some- 

 times the trap valve i? 

 opened or closed to in- 

 crease or decrease the 

 circulation speed and 

 in this instance an in- 

 dividual trap is pre- 

 ferable. 



The accompanying 

 illustration is a sec- 

 tional view of a well- 

 known type of the 

 bucket steam trap. It 

 has one inlet, two out- 

 lets and two blow-off connections. The pipe connections can he 

 made on either side, whichever may be most convenient, leaving 

 the other side plugged. After installing the trap there should be 

 enough water in it to float the bucket, as the valve does not 

 seat until the bucket is up. As soon as sufficient water enters 

 the trap, the bucket, being buoyant, rises and closes the valve, 

 which is attached to it by the valve stem. When condensation 

 in the trap body has reached the high-water line the bucket 

 fills and sinks, opening the valve which discharges the water in 

 the bucket, leaving enough to insure a perfect water seal, 

 together with the condensation in the trap body through the 

 valve port to the outlet until it has reached the low-water line. 



Much difficulty may be avoided by giving steam traps due 

 attention; for instance, blow out the trap as often as the con- 

 dition of the water makes it necessary. If the trap becomes 

 clogged with mud, caused by the boilers priming, the plug on 

 one of the blow-off connections may be removed and the settling 

 chamber cleaned out with a rod. without disconnecting the 

 piping. [The C. E. Squires Co.. Cleveland, Ohio.] 



Directly below the roller is a drum H, the surface of which is 

 roughened and drives the take-up roller by contact. The drum 

 is rotated intermittently by gearing and a pawl and ratchet wheel 

 movement shown at / and actuated by rod /, attached to crank 

 arm K . which is driven from the main shaft L. In operation, the 

 bias strips as they are cut off fall on the liner strip and are 

 carried to the rear of the machine where they are rolled up with 

 the liner on the wind-up roller. [William C. Stevens, assignor 

 to the Firestone Tire & Rubber Co. — both of Akron, Ohio. 

 Canadian patent No. 169,455 (1916).] 



MACHINERY PATENTS. 



THE STEVENS BIAS CTJTTEE TAKE-UP. 



•yHE inexpensive and tedious operation of removing strips of 

 frictioned fabric from the bias cutter and placing them in 

 "books" is entirely obviated by this machine. A traveling liner 

 IS provided upon which the strips fall, and which is wound up 

 with them in a compact roll. 



In the drawing, A represents a bias cutter of the ordinarv type 

 and B the take-up device. The liner roll C is mounted on a truck 

 D that may be rolled out and a new liner roll replaced. From the 



MACHINE FOR MAKING STORAGE BATTERY JARS. 



This machine makes seamless storage battery jars with rein- 

 forced corners from sheets of uncured rubber. The drawing is 

 a vertical section through the center of the machine, which is 



supported on 

 suitable legs not 

 shown. The bed 

 A supports the 

 four horizontally 

 movable rams, 

 only two of which. 

 B and C, are 

 shown. These are 

 operated by com- 

 pressed air with 

 tne exception of 

 B, which is hand 

 operated. The 

 vertical ram P, 

 also air operated, 

 is supported with 

 its cylinder by a 

 yoke frame E that 

 is bolted to the bed. 

 In operation, tlie sheets of stock which are cut to size and 

 covered with thin sheets of tin, are applied to the mandrel F. 

 which is placed on the tongue projecting from the hand- 

 operated ram B. This is moved forward under the vertical 

 ram where it is held in position by the air-operated locking pin . 

 G. The air valve is now operated, advancing the rear ram, then 

 the two side rams and finally the upper ram, thereby molding 

 the sheets of stock on the core and forming a jar without seams 

 or joints. 



The air valve is then reversed, which withdraws the locking 

 pin and retracts the several rams, when the mandrel and jar 



