US1059623A - Mold-ramming apparatus. - Google Patents

Description

H. P. MAODONALD.

MOLD RAMMING APPARATUS.

APPLICATION FILED 00119, 1912.

1,059,623. Patented Apr. 22, 1913.

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UNITED STATES PATEN T @FFTQE.

HARRY P. MACDONALD, OF MONTOLAIR, NEW JERSEY, ASSIGNOR TO THE SNEAD & CO. IRON WORKS, 015 JERSEY CITY, NEW JERSEY, A CORPORATION OF NEW JERSEY.

MOLD-RAMMING APPARATUS.

Specification of Letters Patent.

Patented Apr. 22, 1913.

To all whom it may concern:

Be it known that I, HARRY P. MACDONALD, a citizen of the United States, residing at Montclair, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Mold-Hamming Apparatus, of which the following is a specification.

This invention relates to mold ramming apparatus and particularly to the type of apparatus wherein the sand is rammed 1n the flask by means of a heavy roller which is passed over the flask. It is designed particularly for use in ramming long, flat flasks and it has for its primary object the provision of an improved arrangement of removable supporting mechanism for the roll whichis simple in construction and operation and which requires a minimum of operative space. This, together with such other objects as may hereinafter appear or are incident to my invention I attain by means of a construction which I have illustrated in preferred form in the accompanying drawings, wherein- Figure 1 is a plan View of a roll ramming apparatus embodying my invention; Flg. 2 is a side elevation of the device illustrated in Figure 1; and Fig. 3 is a partial sectlon on the line IIIIII of Figure 1 and illustrates a detail of the invention.

In ramming mold flasks by mechanism of the roll ramming type, considerable difliculty is encountered in providing a suitable support for the roll, this being particularly the case where the mold flasks are of considerable length. In this general type of mechanism the sand is rammed or packed by means of a heavy roll which is supported over the flask by means of a track or other suitable support and it is one of the objects of my invention to provide a support for the roll which will require but little head room and which can be readily removed or swung to one side, permitting of free access to the machine in placing and removing flasks to and from operative position.

Referring to the drawings, it will be seen that I have shown a main framework 7 which rests upon the foundry floor and is adapted to support one or more mold flasks 8 as may be desired. A support for the roll is pivotally mounted on the framework 7, such support comprising a pair of angle rails or tracks 9 which are bound together at their duter ends by means of a cross piece 10 and at their inner ends by means of a strap 11 which is secured to the under sides of the rails. The framework 7 is provided with two or more brackets 12 which are adjustably secured to the framework by means of the bolts, 13. The roll supporting frame is secured to the brackets 12 by means of the hinges 14, one leaf of which is secured to the bracket and the other to one of the side rails of the framework. The ramming roll 15 is provided with grooves 16 ateither end, said grooves being adapted to engage the upstanding legs of the rails 9 and prevent their spreading during the ramming operation. The roll supporting frame is adapted when in operative position to rest upon the top edges of the flask 8 in the manner illustrated in Figure 3, in which position it serves as a sand retaining frame and retains the sand over the flask. The roll, 15, is fastened in the yoke, 17, on which is secured a long operating bar, 18, which can be actu ated in any desired manner. When the roll is not in operation and the flasks are being placed in position or removed from the machine, the roll is supported on the platform 19 which is located adjacent the inner end of the frame 7. The inner end of the roll supporting frame may be locked in position with respect to the platform 19 and the flask by means of the keeper bar 20 which is mounted in the plate 21 and which engages a recess in the platform. From the foregoing it will be seen that the roll supporting frame may be readily swung to one side, as indicated in dotted lines in Fig. 3, thus permitting of the ready insertion or removal of the flasks in and from the machine. It will also be apparent that in hinging the roll supporting frame to one side of the machine, a small amount of head room is required, thus adapting the device for use in foundries which have but a limited amount of working space.

In operating the apparatus, the flask is first placed in position on the frame 7, after which the roll supporting frame is swung into position resting on the top of the flask 8 and the flask is thereafter filled with sand, the roll supporting frame serving as an upset or sand frame to retain the sand in place during the ramming operation, as well as a support for the roll. The method of operation is simple and expeditious and the 1. lnvroll ramming apparatus, a roll, a.

platform adapted to support said roll when in inoperative position, a main frame adjacent the platform, a flask carried on said frame, and aroll supporting frame hinged at one side of the main frame and in substantial alinement with the platform,

adapted when in operative position to support the roll over the flask and when in inoperative position to lie on one side of the frame. clear of the flask.

2.- In.roll ramming apparatus, a roll,,a platformadapted to support said roll when in inoperative position, a main frame adjacent the platform, a'flask carried on said frame, a roll supporting frame hinged at one side of the main frame in substantial alinement with the platform, adapted when in operative position to support the roll over the flask and when in inoperative position to lie on one side of the frame clear of the flask, and a latch on the roll supporting frame adapted to engage the platform and maintain the frame in position.

3. In roll ramming apparatus the combination of a flask supporting frame, a flask carried thereby, a bracket mounted on one side-of the frame, a ramming roll, and a roll supporting frame hinged to the bracket and adapted when in operative position to support the roll over the flask and whenin inoperative position to lie to one side of the flask supporting frame.

4;. In roll ramming apparatus, a roll, a, flask, a platform adapted to support the'roll.

when in inoperative position, amain frame adjacent the platform, and a roll supporting frame hinged at .one'side of the main frame and in substantial alinement with the platform, adapted when in operativepositionto support the. roll over theflask and when in. inoperative position tolie on one side of the, frame clear of the flask.

In, testimony whereof I have hereunto signed my-name in the presence of the two subscribed witnesses.-

HARRY P. MACDONALD.

Witnesses:

F; P. RANLETT, C. C. Grumman), Jr.v

Copies of this patent may be obtained-for five cents eachahy addressing the Commissioner of 1?atents,:=

Washington, DJ 0.

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