Standing at the rear of the machine and counting from the right, the cams have the following action: Cam No. 1 is the first elevator cam. This cam operates the first elevator slide, through the auxiliary and first elevator levers, by means of a connection made by a connecting link. This cam lowers the first elevator slide and jaws with the matrix line to the mold and then lifts it to the intermediate channel for the transfer to the second elevator bar. The elevator has five changes of position in the casting of the line.
The second is the distributor shifter cam. This cam is inside the frame of the machine, under cam No. 3, and to which it is fastened with two dowel pins and a screw. This cam operates the distributor shifter for transferring the matrices from the second elevator bar to the distributor box and forcing the matrix line against the matrix lift. This action is produced by a rider assembled in the distributor shifter hub which is fastened by a shaft to the mold gear arm. The rider is brought up against the face of this cam by a coil spring which is fastened to the lower end of the hub and to the frame of the machine. Assembled with the rider in the hub is a cushion spring that takes care of any undue strain that might occur in the action of the cams.
The third is the mold turning cam. The two gear segments attached to this cam impart rotation to the mold turning pinion which in turn revolves the mold disk. The short segment engages the pinion and turns the disk one-quarter revolution, bringing the mold in position to receive the line of matrices. The long segment in turn brings the disk and mold to ejecting position, completing the revolution of the cams.
The fourth (a part of cam No. 3) is the vise closing and second justification cam. The lever, directly under this cam, has a roller that follows the contour of the cam. A heavy coil spring beneath the lever presses the roller against the cam. The lever is forked at the front end and actuates the vise closing mechanism, and also acts with the justification lever in making the second justification.
The fifth is the justification lever cam. The lever directly under this cam has a roller that follows the contour of the cam. The heavy coil spring beneath the lever presses the roller against the contour of this cam, justifying the line of matrices by forcing the spacing mechanism against the spacebands. This lever in its downward motion operates the slug lever.
The sixth (a part of cam No. 5) is the second elevator cam, which operates the second elevator arm by means of a roller following the contour of this cam. This arm, to which the lever is fastened, lowers the second elevator to receive the line of matrices at the transfer position and then raises them to the distributor box.
The seventh is the pot pump cam and operates the pump lever. There is a roller on this lever resting against the face of the cam. This lever forces the metal into the mold cell as the cam revolves to the low portion. The lever is forced down by a strong spring. The new style pot pump lever is connected to its shaft and has a lever extending into the column. It is pulled downward by a stiff coil spring.
The eighth is the pot cam, which acts on the pot lever, forcing the mouth of the pot forward against the mold. There are two shoes on this cam. The first or short shoe is to cause the face alignment; the second or long shoe is to lock the pot firmly against the mold before the slug is cast. A roller is carried in the pot lever and follows the contour of this cam and is the medium through which the above lockup is accomplished.
The ninth is the mold slide cam and driving gear. The right side of this gear is channeled out, and carries the mold slide lever roller which operates the mold slide to advance the mold disk to a position in which the lugs of the matrices are held in the groove of the mold for alignment. It also returns the mold disk after the line has been cast, advances it again to ejecting position, and returns it after the slug is ejected. This gear also carries the pot return cam, which withdraws the pot from the mold after the cast. It also carries the ejector cam which engages the pawl on the ejector lever and moves it forward, ejecting the slug from the mold.
The tenth cam operates the delivery slide and transfer cam roller arms and causes these two parts to return to normal position after their respective movements. The delivery slide cam roller rotates on the outer surface, while the transfer slide cam roller acts on the inner surface. This cam also retracts the ejector lever after the slug has been ejected. The automatic safety and stopping pawls are attached to this cam. They are operated by the transfer slide and the delivery slide rollers. This cam really consists of two parts in one, the outer cam controlling the return of the delivery slide and the inner one controlling the return of the transfer slide lever.