US982971A - Mold-making machine. - Google Patents

Description

G.-A. MOKEEL. MOLD MAKING MACHINE.

APPLICATION TILED MAY 19, 1910.

Patented J an. 31, 1911.

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G. A. McKBEL. MOLD MAKING MACHINE.

Patented Jan. 31, 1911.

APPLICATION FILED MAY 19, 1910.

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tlhlITE @TATiEg FTN GEORGE A. MOKEEL, 0F CLEVELAND, OHIO, ASQSIGNOR TO THE OSBORN MANUFACTUR- ING COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

MOLD-MAKING MACHINE.

To all whom it may concem:

Be it known that I, GEORGE A. MCKEEL, a citizen of the United States, and a resident of Cleveland, county of Cuyahoga, and State of Ohio, have invented a new and useful Improvement in Mold-Making Machines, of which the following is a specification, the principle of the invention being herein explained and the best mode in which I have contemplated applying that principle, so as to distinguish it from other inventions.

The present invention, relating as indicated to molding machines, has more particular regard to that type of molding machine wherein the flask and molded sand therein is stripped from the pattern by direct downward movement of either the pat tern or the flask while the other part is relatively stationarily supported.

The object of the invention is the pro vision of a mechanism of simple and compact construction, whereby vertical 1novement of the desired length may be secured, while at the same time such movement is rendered easy and continuous for the full length of the draw, so as to avoid any tendency to disarrange and mar the mold.

To the accomplishment of these and related ends said invention, then, consists of the means hereinafter fully described and particularly pointed out in claims.

The annexed drawings and the following description set forth in detail certain mechanism embodying the invention, such disclosed means constituting, however, but one of various mechanical. forms in which the principle of the invention may be used.

In said annexed drawings: Figure 1 is a front elevation of. a molding machine embodying my several improvements, the movable element of the machine being shown at its uppermost position; Fig. 2 is a horizontal section of such machine taken on the line 22, Fig. 1; Fig. 3 is a vertical sectional view of the same taken on the line 3-3, Fig. 2, and showing the parts in the same operative position as in Fig. 1; Fig. 4 is a View similar to Fig. 3, but showing the movable element in lowered position; and Figs. 5, 6, 7 and 8 show certain details of construction.

The general frame of the machine may, of course, take on various forms, but as shown, consists of a supporting pedestal or stand 1, from which rise two arms 2 provid- Specification of Letters Patent.

Application filed. May 19, 1910.

Patented J an. 31, 1911.

Serial No. 562,196.

ing a hollow interior clearance for the vertically movable element which will be presently described. 011 the upper ends of said arms is stationarily supported a top or table 3, and on such top in turn are adjustably mounted the upwardly extending flasksupporting frames 4, upon the upper edges of which the flask (not shown) is designed to rest when the machine is in use. The detailed construction of these frames forms no part of the present invention, and accordingly need not be further referred to.

Depending downwardly below table 3 is a bearing 5 in which is carried the operating shaft 6 having a hand wheel, 7, or the like, at its outer end and at its inner end a disk 8. The latter is provided (see Fig. 5) with a diametral slot 9 adapted to slidably receive a plate 10 bearing an eccentrically disposed pin 11 that forms in effect a wrist pin for the reciprocation of the movable element of the machine. In order to secure the plate to the disk, twobolts l2 and 13 are provided, the first of said bolts passing through apertures 14 and 15 (Fig. 7 in the disk and plate, respectively, while the second bolt 13 passes through corresponding apertures 16 and 17. Aperture 14 in the disk and aperture 17 in the plate are simply round holes adapted rotatably to receive the appropriate bolts, but aperture 15 in the disk is elongated longitudinally of the slot 9 (Fig. 5) while aperture 16 in the plate is elongated transversely of such slot (Fig. 8). Accordingly by providing the bolt 12 that passes through apertures 1 1 and 15 with an eccentric body portion (Figs. 6 and 7), rotation of said bolt will be effective to move the plate one way or the other in slot 9. The end of the bolt is squared to facilitate the rotation thereof for this purpose, and a nut 18 serves to clamp the plate in adjusted position. Additional security is afforded by the bolt 13 and its nut 19, such nut being loosened to permit movement of the bolt in the longitudinally elongated aperture 15, whenever the position of the plate is be ing adjusted. The outer portion of bolt 13, moreover, constitutes the wrist pin 11 previously referred to as connected to reciprocate the vertically movable element of the machine, which in the present case is the pattern carrying frame 20, the flask being designed to be rested, as previously stated, upon the supporting frames 4 that are mounted on the table or main frame of the machine. Pattern frame 20 has a downwardly extending central stem 21 fitted in a guide bearing 22 in the machine base and is, furthermore, slidably held in suitable guide-ways 23 provided on the inner faces of the flask-supporting frames 4.

Extending downwardly from the under side of the pattern carrying frame is a bracket 24 formed with a transversely extending slot 25 suitably faced with removable wearing plates 26 and slidably receiving a block 27, that is, in turn, fitted onto the wrist-pin 11 carried by the disk 8, as already described. Rotation of the operating shaft 6 and thus of the disk 8 will, accordingly serve to raise and lower the pattern carrier 20, as should be obvious.

In order, approximately to counter-balance the weight of the pattern-carrying frame, I encircle the shaft 6 with a coil spring 28, attaching one end of such spring to bearing 5 and the other to one of the spokes of hand-wheel 7 and thus to the shaft. Such spring, in resuming its normal condition, tends to rotate the shaft in the proper direction to elevate frame 20 as shown in Figs. 3 and 4:.

Inasmuch as, in the upper position of the carrier, the block 27 is thrown slightly over the center or axis of the disk, the carrier will be securely retained in its raised position. Movement of the carrier, moreover, will be a steady even one, fully under the control at all times, of the operator whose hand is on the wheel. In other words, there will be no lost motion to be taken up at any stage in such movement. Actual wear is readily taken care of by replacing the bearing plates 26 in the slide-way in carrier-bracket 2 1 or by adjusting the wrist-pin 11 on the face of the disk. Emphasis is further to be placed on the convenience of this latter adjustment in exactly leveling the pattern for any particular work. The substantial balancing moreover, of the carrier by the spring on the operating shaft when there is no weight on the carrier, considerably lightens the task of the operator as need not be further explained. By shifting the point of attachment of the outer end of such spring from one spoke to the other, any desired degree of tension may be preliminarily placed on the spring.

The shape of disk 8 is of course a matter of indifi erence so long as it is adapted to properly support the wrist-pin bearing plate 10. The term disk as herein used will be understood to connote any member suited to this purpose, irrespective of whether it be of circular or other outline.

Other modes of applying the principle of my invention may be employed instead of the one explained, change being made as regards the mechanism herein disclosed, provided the means stated by any of the following claims or the equivalent of such stated means be employed.

I therefore particularly point out and distinctly claim as my invention 1. In a machine of the character described, the combination of a frame; a support reciprocably held in said frame; and means for reciprocating said support, said means including an operating shaft mounted in said frame and provided at its inner end with a disk, a wrist pin on the face of said disk, and a slideway on said support disposed transversely of said shaft and engaging said pin.

2. In a machine of the character described, the combination of a frame; a support recip rocably held in said frame; and means for reciprocating said support, said means including an operating shaft mounted in said frame and provided at its inner end with a disk, a wrist pin on the face of said disk, and a depending bracket on said support disposed transversely of said shaft and pro-- vided with a slideway engaging said pin.

3. In a machine of the character described, the combination of a frame; a support reciprocably held in said frame; and means for reciprocating said support, said means including an operating shaft mounted in said frame and provided at its inner end with a disk, a wrist pin secured on the face of said disk so as to be transversely adjustable thereof, a depending bracket on said supportdisposed transversely of said shaft and provided with a slideway, and a slide block in said slideway fitted on said pin.

l. In a machine of the character described, the combination of a frame; a support reciprocably held in said frame; and means for reciprocating said support, said means including an operating shaft mounted in said frame and provided at its inner end with a disk, a plate secured on the face of said disk so as to be adjustable transversely thereof, a wrist pin carried by said plate, a depending bracket on said support disposed transversely of said shaft and provided with a slideway, and a slide-block in said slideway fitted on said pin.

5. In a machine of the character described, the combination of a frame; a support reciprocably held in said frame; and means for reciprocating said support, said means including an operating shaft mounted in said frame and provided at its inner end with a disk, a plate adjustable transversely of the face of said disk, bolts for securing said plate to said disk, one of said bolts having eccentric engagement with the plate whereby the latter may be thus secured in adjusted position, a wrist pin carried by said plate, a depending bracket on said support disposed transversely of said shaft and provided with a slideway, and a slide-block in said slideway fitted on said pin.

6. In a machine of the character described, the combination of a frame; a support reciprocably held in said frame; and means for reciprocating said support, said means including an operating shaft mounted in said frame and provided at its inner end with a disk, a plate adjustable transversely of the face of said disk, two bolts passing through said plate and disk to secure the former to the latter, one of said bolts having eccentric engagement with the plate and the other being transversely movable in said disk and projecting beyond said plate to serve as a wrist pin a depending bracket on said support disposed transversely of said shaft and provided with a slideway, and a slide-block in said slideway fitted on said pin.

7. In a machine of the character described,

the combination of a frame; a support recip rocably held in saidframe; an operating shaft mounted in said frame and provided at its inner end with a disk; a wrist pin on the face of said disk; a slideway on said support disposed transversely of said shaft and engaging said pin; and a coil spring surrounding said shaft, said spring being connected to said frame at one end and to said shaft at the other, movement of said support downwardly tending to coil said spring and vice versa substantially as described.

Signed by me this 17th day of May, 1910.

GEORGE A. HGKEEL.

Attested by:

CHRISTINE E. ARUs, J NO. F. 'OBERLIN.

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