US765332A - Molder's flask-support. - Google Patents

Description

No MODEL.

PATBNTED JULY 19, 1904.

J. CBRADLEY. MOLDERS PLASK SUPPORT. APPLICATION FILED FEB. 1904.

2 SHEETS-SHEET 2.

N0 MODEL.

UNTTED STATES Patented July 19, 1904.

PATENT OEEICE.

YORK, ASSIGNOR TO PRATT @a BUFFALO, NEW YORK.

MOLDERS FLASK-SUPPORT.

SPECIFICATION forming part of Letters Patent No. 765,332, dated July 19, 1904.

Application filed February 8, 1904. Serial No. 192,509. (No model.)

To all whom it may concern:

Be it known that I, JOHN O. BRADLEY, a citizen of the United States, and a resident of Buffalo, in the county of Erie and State of New York, have invented a new and useful Improvement in Molders Flask-Supports, of which the following is a specification.

This invention relates more particularly to a device to be used in connection with a molders table to support the ask and relieve the molder from the weight thereof while inverting or rolling over the iask and the part of the mold which it contains.

In forming a sand mold the customary procedure is to place thel pattern on the matchboard, place the drag-,section of the fiask on the match-board, lill the same with sand,\vhich is packed or tamped, after which a coverboard is placed on the drag and the latter, together with the match-board and coverboard, is inverted or rolled over and the other part of the mold formed. In the formation of large and heavy molds it is a matter of oonsiderable diiiiculty and requires great exertion to roll over the flask, and for this reason it is quite common for the molderl to form large molds on the floor of the foundry and call a helper to his assistance to invert or roll over.

The object of this invention is to provide a device of exceedingly simple, strong, and inexpensive construction capable of application to any molders table to support the iiask and relieve the molder of its weight while he is inverting the same, and, further, to so construct the device that it can be quickly and easily adjusted to suit flasks of different sizes.

In the accompanying drawings, consisting of two sheets, Figure l is a side elevation of a molders table provided with a device embodying the invention and showing by full lines the flask supported on the table and the support about to lift the flask and showing by dotted lines the normal position 0f the flask-support and its position when supporting the iiask clear of the table. Fig. 2 is a fragmentary front elevation of the table and iiask-support. Fig. 3 is a fragmentary sectional elevation, on an enlarged scale, of one of the arms of the flask-support. Fig. 4 is a fragmentary front elevation, partly in section, of the table-standard and the stop device for limiting' the swing of the flask-support.

Like letters of reference refer to like parts in the several figures.

A represents a table or support for the iiask while the sand mold is being formed therein. In the construction shown in the drawings this table is secured to and projects forwardly from an upright standard B, which is also provided above the table with a swinging arm c, carrying a vertically-movable pattern-drawing device O, adapted to be secured to the pattern and elevated to lift the pattern out of the mold; butthe swinging flask-'support forming the subject-matter of this invention is not restricted to use with such a table or machine, but is susceptible of use in connection with any ordinary mold table or support.

X represents the drag-section of a moldflask, y the match-board, and .e the coverboard supportedon the table and ready to be rolled over or inverted. 'The drag is provided at opposite sides with projecting trunnions m.

D represents the fiask-support, which consists of a swinging lever or frame arranged below the front portion of the table and having at its upper end two oppositely-disposed separated arms E, arranged at opposite sides of the mold-table and provided at their upper ends with bearing-sockets e to engage the iiask-trunnions to lift and support the flask. The lever is pivoted at its lower end in any suitable manner on the ioor or a base provided for the same. A base F is shown provided at opposite sides of the lower end of the lever with raised bearings f, through which and through a sleeve at the lower end of the lever passes a horizontal shaft f', on which the lever is adapted to swing toward andv from the table. The arms of the flask-support are provided with horizontal inwardly-projecting portions f2, which enter split clampingsleeves g at the sides of the upper end of the lever, and these split sleeves are provided with projecting flanges connected by bolts r/ for clamping the horizontal portions of the arms to hold the latter firmly in adjusted positions. By loosening' the bolts the clamping-sleeves free thehorizontal portions of the arms to permit the latter to be turned in the sleeves to bring their upper ends beneath the outwardlyprojeeting trunnions on the flask and also to permit the arms to be moved laterally toward or away from the sides of the table to adapt the support to flasks of different widths.

As the flasks vary in height and the trunnions are notlocated at the same heig'ht on all ffasks, it is also desirable to provide for the extension of the arms of the support to position their upper ends in correct relation to the trunnions of the flasks. For this purpose each arm is provided with an upper telcscoping portion or extension H, which is preferably tubular and surrounds the reduced upper end /L of the arm. lhe arm extensions carry the bearing-sockets for the flask-trunnions. The arm extensions can be moved on the reduced portions of the arms to properly position the bearing-sockets relative tothe flask-trunnions and are securely held by set-screws v7, passing' through threaded holes in the tubular extensions and engaging the reduced portions of the arms. The rear sides of the bearing-sockets for the flask-trunnions are preferably longer than the front sides to enable the flask-support to be swung rearwardly clear of the trunnions, as indicated by dotted lines in Fig. l, while the support is prevented from being swung forwardl y past the trunnions.

K represents a stop device for limiting the forward movement of the flask-support and preventing' it from falling so far rearward as to be out of easy reach .of the molder. This device may be of any suitable form, that shown in the drawings consisting of a rod which is hinged at its front end to the upper portion of the lever-support for the flask and having a bifureated rear end which straddles the table-standard and is provided with hooks r, which engag'e a transverse horizontal stopplate Za', secured to and projecting' laterally beyond the sides of the standard to limit the forward swing of the flask -support The crotch of the bifurcated ond of the bar I( engages the standard to limit the rearward swi ng of the flask-support.

The operation of the device is as follows:

As before stated, the match-board, with the pattern thereon, is placed on the table and the drag placed on the match-board and the drag portion of the mold formed in the usual manner. The cover-board is then placed on the drag, and the flask is ready to be rolled over. The cover and match boards are secured or held by hand on the drag', and the flask-support is then grasped and swung forwardly until the rear sides of the bearing-sockets on the upper ends of its arms engage the trunnions at the opposite sides of the flask. By pulling' the flask-support forwardly the arms, which are in engagement with the trunnions, slide the flask forwardly on the table until the trunnions bear in the sockets of the support, when by the continued. forward movement of the flask-support the fiask is lifted off of the table and supported entirely by the fiask-support in front of the table. The molder then swings the flask on its trunnions to invert the same and pushes the support and fiask rearwardly until the flask is lowered onto the table, after which the flask-support is released and permitted to drop rearwardly out of engagement with the trunnions of the flask, as

lindicated by dotted lines in Fig. l.

rlhe flask-support is of exceedingly simple, strong, and inexpensive construction, and does not constitute a permanent part of a large and expensive molding-machine, and can therefore be used to advantage in any foundry, and on account of its ad justability is readily adapted to different molding-tables and flasks of different sizes. The device relieves the molder from the necessity of lifting the mold and greatly facilitates the formation of the mold.

I claim as my inventionl. rl`he combination with a table for supporting the flask, of a swinging' fiask-support pivoted at its lower end and provided With separated arms arranged to swing past the table at opposite sides thereof and having bearings at their upper ends to engage parts on the opposite sides of the .fiask, substantially as set forth.

2. The combination with a table for supporting the fiask, of a swinging flask-support pivoted at its lower end and provided with separate arms arranged to swing past the table at opposite sides thereof` and having bearings at their upper ends to engage parts on the opposite sides of the flask, and means for limiting the swinging movement of the flask-support, substantially as set forth.

3. A swinging flask-support, pivoted at its lower end and having' separated arms provided at their upper ends with bearings to engage parts on the liask, said arms being adjustable laterally toward and from each other, substantially as set forth.

4. A swinging flask-support comprising a lever pivoted at its lower end, and separated arms secured to the upper end of said lever and provided at their upper ends with bearings to eng'age parts on the fiask, said arms being adjustable laterally and also forwardly and rearwardly on said lever, substantially as set forth.

A swinging flask-support comprising a lever pivoted at its lower end and provided at the opposite sides of its upper end with split clamping-sleeves, and separated arms having at their upper ends bearings to engage parts IOO IIO

IZO

upper ends With sockets to receive the trunnions on the ask, substantially as set forth.- IO

Witness my hand this lst day of February, 1904;.

JOHN C. BRADLEY. Witnesses:

W. C. HoUoK, CHAS. W. PARKER.

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