US569690A - Molding-press - Google Patents

Description

(No Model.)

a sheets-sheet 1.

G. W. VAN TINE.

MOLDING PRESS.

Patented Oct. 20, 1896.

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INVENTOR:

6% P h AT NEY (No Modl.) 3 Sheets Sheet 2.

G. W. VAN TINE.

MOLDING PRESS.

Patented Oct. 20, 1896.

INVENTUR,

ATTORNEY,

jWITNESSES (No Model.) 7 3 SheetsSheet 3.

G. W. VAN TINE. MOLDING PRESS.

Patented Oct. 20, 1896.

4 INVENTOR: W741.

BY AT UNITED STATES PATENT EEicE,

GEORGE \V. VAN TINE, OF BAYONNE, NEW JERSEY.

MOLDING-PRESS.

SPECIFICATION forming part of Letters Patent No. 569,690, dated October 20, 1896.

Application filed October 25, 1893. Serial No. 489,125. (No model.)

To all whom, it nuty concern.-

Be it known that I, GEORGE WV. VAN TINE, a citizen of the United States, residing at Bayonne, in the county of Hudson and State of New Jersey, have invented certain new and useful Improvements in Molding-Presses, of which the following is a specification, reterence being bad therein to the accompanying drawings.

My invention relates to that class of moldingpresses provided with swinging sandboxes containing the patterns and carrying the halfflasks, in which latter the molds are formed by the pressing operation, the object of my inven tion being to provide mechanical means for swinging or otherwise moving the said boxes in and out of the press, thereby lightening the labor of working the presses, (particularly in those presses having large heavy sand-boxes) as well as expediting the work. To this end I provide a molding-press with horizontal pressure-cylinders in which work pistons connected to the movable or swinging sand-boxes in such manner that by admitting water or other pressure fluid to the said pressure-cylinders the sand-boxes may be swung or otherwise moved in or out of the press. I

In the accompanying drawings, Figure l is a side elevation, partlyin section, of a molding-press embodying my invention. Figs. 2 and 3 are plan and cross-sctional views, respectively, of the same on a larger scale than Fig. 1. Fig. 4 is a detail plan view of the pressure-cylinder and rack for operating the swinging sandsboxes.

A denotes the base of the press, and B a table mounted on said base and serving as a support for the ram-cylinders O, in which work the plungersD, carrying the platens (1, said cylinders having supply and discharge pipes 0, through which the pressure fluid enters and leaves the cylinders. The presshead E is supported bysuitable posts or standards F,surrounded bysleeves G, havingarms g, carrying the swinging sand-boxes H, which support the half-flasks II, in which the molds are formed.

The press herein shown is a large one having great capacity, there being four posts or standards F, each surrounded by a sleeve G, and'each sleeve carries a double sandbox.

Mounted on arms or brackets a, extending outward from the base A, are horizontal pressure-cylinders I, within which work pistons J, having rods 7:, provided with double racks K, meshing with gears 9', attached to the sleeves G. The cylinders I are provided with inlet and outlet pipes L', extending to any suitable source of pressu re-suppl y.

From the foregoing it will be obvious that by admitting the water or other pressure medium to one end or the other of said cylinders I the pistons J therein will be moved to operate the racks K, connected by the gears g to the sleeves G, thereby swinging the sandboxes H in or out of the press, as may be desired, the double racks herein shown each swinging two double sand-boxes in or out of the press, said double sand-boxes moving around in opposite directions. \Vhile the two double san d-boxes operated by one of the racks K are in pressing position in the press, the other two double boxes are thrown out ward in position for removing the molds and refilling the sand-boxes and half-flasks.

I do not wish to be understood as limiting my invention to the details herein shown, as it is obvious that these may be widely varied without departing from the spirit of my invention. For example, the sand-boxes might be sliding ones instead of being carried by swinging arms, and might therefore be operated directly from the plunger-cylinders instead of through the medium of the racks and gears; also, single racks might be used to move a single sand-box or a single set thereof instead of the double racks for simultaneously operating two double sand-boxes; and other variations within the province of mechanical shill might also be made in the details of my invention.

Having thus described my invention, I claim and desire to secure by Letters Patent 1. I11 a molding-press, the combination with pressure-cylinders, pistons working therein and racks operati vely connected with said pistons, of swinging sand-boxes and gears engaged by said racks and operati rely con nccted with said sand-boxes.

2. In a moldingpress, the combination with the posts or standards thereof, of sleeves surrounding said posts or standards and provided with gears, sand-boxes carried by arms extending from said sleeves, pressure-eyiinders,

pistons working in said cylinders and racks engaging said gears and operated from said pistons.

3. I11 a molding-press, the combination with the posts or standards F, of the sleeves Gr surrounding said posts and provided with the gears g and the arms g, sand-boxes I-I sup- :o ported by said arms, pressure-cylinders I, pistons J working therein, racks K engaging said gears, and rods in connecting said racks with said pistons.

In testimony whereof I aifix my signature in presence of two witnesses.

GEORGE V. VAN TINE.

itnesses:

HENRY CALVER, J. F. JAQUITH.

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