US409519A - Mold for casting - Google Patents

Description

(No Model.)

' E. C. STANDIPORD.

4 MOLD FOR CASTING.

No. 409,519. Patented Aug. 20,1889.

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UNITED STATES PATENT OFFICE.

EMMET C. STANDIFORD, OF CHICAGO, ILLINOIS.

MOLD FOR CASTING.

SPECIFICATION forming part of Letters Patent No. 409,519, dated August 20, 1889. f

Application filed January 13, 1888. Serial No. 260,618. (No model.)

T all wiz/0m it may concern:

Be it known that 1, EMMET C. STANDIFOED, of Chicago, in the county of Cook and State of Illinois, have invented certain new and userecessed or fianged blocks or plates-such,

for instance7 as stereotype-plates, the backing of electrotypeplates of that kind having fianges or ribs upon their rear or under surfaces, printers furniture, or the like. Such molds usually consist of two or more parts, one of which parts contains the grooves or depressions constituting the mold proper.

Heretofore in casting electrotype and stereotype plates it has been necessary to make the flanges on said plates with a considerable flare or taper in order that the same may be easily withdrawn from the recesses of the mold after casting. This, however, makes the [langes of undesirable thickness and weight, and one of the objects of my invention is to provide means whereby said plates may be easily withdrawn from the mold when a thin ilange of practically uniform thickness has been cast upon the same. To this end I provide the recessed part of the mold with a plurality of movable rods, plugs, or movable pieces adapt-ed to act against the inner face of the cast plate, whereby the plates may be forced from engagement with the rccesses of the mold without bending, distorting, or otherwise injuring them.

In Figure 1 of the accompanying drawings I have illustrated in a side View, partially in section, a casting block or mold, the upper member being shown raised in dotted lines at the upper right-hand corner, closed and in a horizontal position in full lines, and in position ready for casting in dotted lines. Fig. 2 is a transverse vertical section of the casting-block when in horizontal position, taken on line 2 2 of Fig. 1.

In the drawings, A indicates the bed-plate of the usual frame, which is provided with vertical standards A connected by a pivot or rod d, on which is mounted the lower half or plate B of the casting block or mold. The upper half B of the block, which contains the recesses, grooves, or depressions forming the mold proper, is hinged or pivoted at b to the plate B, the latter being held in horizontal position by engagement with a bell-crank 1ever C, pivoted at c to one of the standards A2 of the frame. The standards A2 extend upwardly above the mold proper, and are conn nected by a rod a2. The upper half B of the block rests against this rod a2, as illustrated in dotted lines in Fig. 1, when adjusting the matrix C upon the plate B before pouring.

D D indicate a series of bars or fiat rods, which are placed within t-he grooves or recesses of the mold, and are arranged parallel with theilanges of the plates to be cast therein, so that they will bear against the entire length of the flanges of the cast plate. Said bars are pivoted within the mold at one end of the latter by means of a pivot-rod CZ, and are actuated to thrust the casting from. the mold by pressure exerted upon the ends of the said bars, which protrude from the opposite end of the mold. Said bars D D are shown as pivoted at d within the 'part B of the 1nold,the lower edges of these bars forming the bottom of the grooves, in which the flanges of the cast plate are formed. The outer ends of the said bars D D are secured to a transverse bar or iia-nged plate D', which may be actuated to move all of the bars D D at once.

B2 B2 are two standards, which rise from the plate B at opposite sides thereof. To the upper part of said standards are pivoted at er toggle arms or links E E, which latter are pivotally connected at their lower ends with similar toggle arms or links E E ,which are pivoted at e e to the plate D. The pivots joining the toggle-links E E engage connecting-links E2, which are pivoted to operatinglevers, one of which is seen at E3, Fig. l. Said operating-levers are pivoted at e3 to standards B3 upon the plate B', and connected at their upper or outer ends by means 0f a crossbar e2, which forms a handle for the same.

Any suitable clamping device-*such as the screw-dogsFF-maybeused tolockthehinged part B to the plate B when the mold is ready for pouring. When the matrix C has been IOO placed on the plate B, which is flat or substantially flat, and the upper part B or the mold proper locked thereon, the handle of the bellcrank lever C is moved upward against the stop c on the standard A', thus releasing the hinged end of the casting-block. The latter, swinging downward, assumes the inclined position illustrated in dotted lines in Fig. l and rests against the cross rod or stop a3, which extends between the two standards A. The hot metal is then poured into the mold at b3 over t-he matrix, and a stereotype or other plate (indicated by I in the drawings) thus formed. Vhen the metal has sufficiently cooled, the mold proper is brought back into the horizontal position, and the lever C again engages the end of the bed-plate and locks the same. The clamp or lock F is then released and the upper part B of the mold may be raised to the position shown in dotted lines, so as to rest against the stop a2 on the standard A2. The handle e2 of the toggle-levers E2 may then be operated, and in doing so the toggles E E force the plate D toward the movable half B of the block, and the bars D D, attached to said plate D will thus be caused to press the plate I from the mold. This operation may be performed, however, when the parts are in a horizontal position and the half B has been partially raised from the plate B.

Extending below the bars at their pivoted ends in the particular form of the device herein shown are short arms d (Z, the ends s of which arms extend to the plate-B. The upper half of the mold B is cut away or recessed at proper intervals oppositel each bar D, as shown at b5, for the reception of these short arms CZ', when the bars D are moved within the mold for the purpose of pushing the plate I therefrom. Said arms CZ form a portion of the mold, as shown, and prevent the hot metal when being poured into the mold from entering the recesses b3. In the absence of such arms the metal would enter the said recesses in which the pivoted ends of the bars are inserted, andthus prevent movement of the same. The bars D obviously press their entire length against the ilangest' of the plate, and thus act with an equal pressure throughout the entire length of the same in forcing the latter from the mold.

The mold illustrated is adapted for casting four or more stereotype-plates of the width of a column, the mold being extended to the matrix at b4 between the columns to divide the same, as shown.

I have herein shown a lever and togglelinks as a means for operating the movable part or parts of the mold; but it is perfectly obvious that a Vcam or other equivalent device may be thus used, and also that the movable part may be actuated by hand, by blows of a hammer or mallet, or otherwise. It will also be understood that the number of bars D D required will depend upon the size of the plate to be cast. It is entirely obvious, furthermore, that the bars which act against the rear face of the casting may be station-u ary, and the main part of the mold may be moved to disengage the casting therefrom, and a construction of this kind is therefore embraced within the scope of my invention.

I have herein shown my invention as embodied in a mold for casting stereotypeplates. I do not, however, wish to limit myself to molds for casting stereotype-plates, inasmuch as the main features of my invention may be employed in casting the backing for electrotypes and in casting other plates or blocks-such as printers furniture-having anges or provided with recesses therein, either when said recesses extend entirely through the plate, so as to form openings in the same, or when the recesses extend only partially through the plate, as is the case with the stereotype-plate illustrated.

I claim as my inventionl. The mold for stereotype or other plates, comprising a substantially flat part and a grooved or longitudinally-recessed part, the latter part being provided with a plurality of movable bars located in the grooves or recesses and forming parts of the inner surface of the mold, said bars being hinged to the said grooved or recessed part, a movable plate attached to all of said bars, and actuating devices for operating said movable plate, connected with said movable plate and the recessed part of the mold and acting to thrust the said bars inwardly to free the casting from the mold, substantially as described.

2. The combination, with a mold comprising a substantially flat part and a recessed or grooved part with a movable part acting upon the rear face of the casting, of an operating-lever pivoted to the recessed part of the mold and toggle-links pivoted to said recessed part and to said movable part, said operating-lever being connected with said toggle-links, substantially as described.

In testimony that I claim the foregoing' as my invention I affix my signature in presence of two witnesses.

EMMET C. STANDIFORD.

NVitnesses:

C. CLARENCE PooLn, O. N. WILLIs.

TOO

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