. Railway mechanical engineer . ceive and hold the hose coupling. At the rightend there is an 8-in. by 12-in. brake cylinder with a pistonrod so arranged that the hose nipple will just slip on overthe end and come up against the shoulder F. The supply of air to and from the cylinder is controlledby the cutout cock, which has a release port drilled in theside. With the handle in one position this port is closedand air is admitted to the cylinder; with the handle in theother position, the air is shut off and that already in thecylinder is allowed to escape through the release port. In operation
. Railway mechanical engineer . ceive and hold the hose coupling. At the rightend there is an 8-in. by 12-in. brake cylinder with a pistonrod so arranged that the hose nipple will just slip on overthe end and come up against the shoulder F. The supply of air to and from the cylinder is controlledby the cutout cock, which has a release port drilled in theside. With the handle in one position this port is closedand air is admitted to the cylinder; with the handle in theother position, the air is shut off and that already in thecylinder is allowed to escape through the release port. In operation the hose is placed in the carriage with anequal length projecting on either side; and is firmly held inplace by the hinged clamp and tapered wedge. The air pres-sure is then applied, and as the piston is forced to the nipple is pressed into the hose. A further travel of thepiston moves the carriage to the left and forces the otherend of the hose over the coupling. As a 4-in. travel of the Atr Hpie D jE A j f Carriage C. Fig. 1 — Device Used in Pressing In Air Hose Nippies and Couplings piston is sufficient for this work, a suitable block has beenplaced inside the cylinder to shorten the stroke. After thenipple and coupling have been pressed into an air hose, itgoes to the next machine, which is conveniently located atthe same bench and shown in Fig. 2. This machine is used to press the hose clamps togetherand hold them while the bolts are being tightened. It con-sists of an 8-in. by 8-in. air cylinder B, mounted on two4-in. by 6-in. sills, which are placed on the floor under thebench and securely bolted to it by the Ss-in. rods shown. Ametal crosspiece is screwed on the end of the piston rod anddrilled and slotted at either side to receive the connectingarms C and suitable pins. The arms C are in turn connectedto the levers B, which project up through two slots in thebench and are pivoted at the fulcrums FF. The upper ends of the levers are forged to form the jaws of
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroadengineering
