US1649811A - Slug-casting machine - Google Patents

Description

Nov. 22, 1927. 1,649,811

A. L. CHALFONTE SLUG CASTING MACHINE Filed Sept. 5. 1925 @kB/Yr. NVNTOR @wf Patented Nov. 22, 1927.

UNITED STATES PATENT i Iorifice.

ALBERT L. CHLALFQNTE, F' TRENTON, NEW JERSEY ASSIGNOR T0 `MERGENTHALER LINOTYPE COMPANY, A CORPORATION OF NEW YORK;

SLUG-CASTING MACHINE.

My invention relates to. slug casting-machines, such as lino-type machines of the gen eral organization represented in Letters Patent of the United States, No. 436,532, to O.

Mergenthaler, wherein circulating matrices are released from a magazine in the order in which their characters are to appear in print and then assembled in line, the composed line `larged scale of the improved mold Wiper;

transferred to the tace of a mold, the mold filled with molten. metal to form a slug or linotype against the matrices` which produce the type characters thereon, and the matrices thereafter returned through distributing mechanism to the magazine 't'rom which they started.

In these machines it is customary to mount the molds on a rotatable wheel or disc, whereby the mold selected for use is first presented in the slug casting' position and then carried around to the slugvejccting position, at` each cyclo of operation ot the machine. Before the slug is cast, the active mold is pressed tightly against the composed line of matrices at the front, and the mouthpiece of the type metal pot is likewise pressed tightly against the mold at the rear. The molten metal is then forced under pressure into the mold slot and up against the intaglio characters of the matrices to form the slug or linotype. In practice, it hasbeen found that unless the contact ot the rear tace of the mold with the mouthpiece ot the `melting pot is substantially perfect at all times, thin films or fins ot' metal will accumulate on the rear face of the moldfand impair the lock-up to such extent that back squirts and other serious diiliculties are likely to result.

The present invention contemplates an improved mold wiper, which is intended to obviate these diiiculties by removing, alter each casting operation, any metal that may adhere to the back ot the mold. In the embodiment illustrated, here is employed a wiping pad resilently mounted on a normally fixed support, which is adjustably secured to a. rigid bracket fastened to the machine rame. o

In the accompanying drawings I have shown my invention only in preferred form and by way of example, but obviously many changes and variations may be made therein and in its mode of operation that will still becomprised vwithin its spirit. Generally speaking, I desire it to be understood that I do not limit myself to any specific term i yshowing my invention applied thereto; y

` Fig. 2 is a vertical section View on an ena-nd . Fig. 3 is a detail section, showing a modilication. 1

As shown in Fig. 1 the mold wheel or disc A is of ordinary construction and equipped with a plurality or molds A1, any one of whichniay be selected for use as desired. An intermittently `driven pinion B, arranged in mesh with the toothed flange of the disc, rotates the latter in an anti-clockwise direction to present the active mold in casting position, and thereafter to carry it around to ejecting position, at each cycle of operation. Before casting, the disc A is advanced to press the i'ront tace of the active mold A1 (which then occupies a horizontal position) firmly against the composed line of matrices `X, which are clamped tightly between vise jaws C to prevent leakage of metal through the line at the time of casting. At, about the same time, the meltingpot D1 is swung forwardly to press its mouthpiece D tightly against the back of the mold. In this lockup condition of the parts, molten metal is forced from the pot l)1 through the mouthpiece D into the mold slot A? and up against `the composed line of matrices X at its front for the casting of the slug. The parts just described and their inode of operation are well-known in the art and constitute no part of my invention. 1

As before stated, the present invention is directed to an improved wiping device which will serve to keep the rear face of the slug casting mold in a clean and smooth condition and tree from adhering vparticles of type metal. In the embodiment illustrated, the improved device comprises a wiping pad E (which may be ot telt or other suitable material) mounted in" a support F and arranged in the path ot the molds so that the active one, in passing from the casting to the ejecting position, will brush across the exposed tace of the pad and thus be cleansed or freed ot any metalor other foreign matter adhering to the rear face thereof.

lil() being adjustably secured by a clamp screw F3 in the upper end of a bracket Gfastened `by a screw bolt Grlrto the base frame of the machine. Preferably, the recessed portion F1 and the shank portion F2 are separately produced and screwed together as at F4, the former being made of cast metal and the latter of rolled steel.

rIhe pad E is properly sized to fit snugly within the recess F'"1 of the end portion F:l and is resiliently supported therein by means of a short compression spring I-I located insaid recess F5 and pressing for- `wardly against a reinforcing plate Fil fastened to the rear face of the pad. 'These parts (see Fig. 2)` are maintained in proper assembled relation by ay shouldered screw J tapped into the threaded end of the stemF2 and formed with an elongated shank J1 and a head J2. The pad E is apertnred at E2 to accommodate the head of said screw so that it may bear against thereinforcing plate E1 and thus limit the forward `movement of the pad under the pressure of the spring H, the shank J1 of the screw being long enough to allow the front face of the pad to protrude a little distance beyond the end of the support F.

1 According to the Jforegoing arrangement, and` after the original setting of the bracket G to `bring the support F in proper angular relation to therear face of the mold disc A, the support F is shifted in the bracket toward the `disc until the pad E, by its en ygagen'ient with the latter, places the spring H under the desired tension. The clamp screw F3 is then tightened tosecure the support to the bracket Gr, thus maintaining the pad iesiliently engaged with the back of the discA, to function in the manner described.

Fig. 3 shows a modified form of device,

`wherein the recessed portion or casing F1 is made integral with the bracket Gr. In this instance, the reinforcing plate E1 is provided with peripheral guide flanges E3, E, slidably fitted within the recess F5, and is conreinforcing desire `to secure by Letters Patent of thel United States is set forth in the following claims:`

1. In or for a slug casting machine, a mold wiper comprising a support formed with a recess, a. wiping pad inovably ,1.

mounted in the recess, a reinforcing plate attached to the wiping pad, a spring located in the support recess and actingto press the pad outwardly, and a confining screw cooperating with the reinforcing plate to.

limit the outward movement of the pad.

2. In or for a slug casting machine, a mold wiper comprising a supiiort formed with a recess, a wiping `pad inovably mounted in the recess, a reinforcing plate attached to the wiping pad, a spring located in the support recess and acting to press the pad outwardly, a confining screw cooperat ing with the reinforcing plate to limit the outward movement of the pad. and a fixed bracket to which the support is adjustably connected.

3. In or for a slug casting machine, a mold wiper comprising a support formed with a cup-like recess, a wiping pad mounted in said recess, a reinforcing plate attached to the wiping pad, and a spring located in the recessaud acting upon thc plate to render the wiping pad resilient. i

fl. In or for a slug casting machine, a mold wiper comprising a support formed with a cup-like recess, a wiping pad mounted in said recess, a reinforcing plate attached to the wiping pad, a spring located y in the recess and acting upon the reinforcing plate to render the wiping pad resilient, and a guide pin projecting forwardlir from the base of the recess and passiiig through a central opening in the reinforcing plate to guide the pad in its movements.

. In testimony whereof, I have aflixed my signature hereto. i

ALBERT L. CHALFONTE.

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