US838908A

US838908A - Molding-machine.

Info

Publication number: US838908A
Application number: US32346806A
Authority: US
Inventors: Otto W Schaum
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-06-26
Filing date: 1906-06-26
Publication date: 1906-12-18
Anticipated expiration: 1923-12-18

Description

PATE'NTBD DEG. 18, 1906.

2 SHEETS-SHEET 1.

a WASHINGTON. n. cj

0. W. SGHAUM.

MOLDING MAGHNE.

APPLICATION FILED JUNE 2s` 190e.

@Hoz/nag 2 SHEETS-SHEET 2.

mvewlofa QZ/iam PATENTED DBC. 18, 1906.

Cj/Q50 0. W. SCHAUM. MOLDING MACHINE. APPLICATION FILED JUNE 2e 1906 wit/meow@ UNITED STATES PATENT OFFICE.

Specification of Letters Patent.

Patented Dec. 18, 1906.

Application iiled .Tune 26, 1906. Serial No. 823,468.

To @ZZ whom, it 7am/,y concern.'

Be it known that I, OTTO W. ScHAUu, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Molding- Machines, of which the following is a specification.

The invention to be hereinafter described relates to molding-machines, and more particularly to that type wherein, after the sand has been properly rammed about the pattern, said pattern, the flask, and bottom board are together turned over, so that the pattern may be readily lifted from the mold. In this class of molding-machines it is found that the bottom boards, on which the flask and other parts rest when the device is turned over for removal of the pattern, become warped or twisted to a considerable extent, so that when attempt is made to withdraw the pattern in any such case the bottom board will not be properly supported and the mold would be more or less injured during the operation of withdrawing the pattern.

/Vith this and other general considerations in view the obj ect of the present invention is to provide a molding-machine of the turnover type wherein the parting stand, upon which the bottom board rests during the withdrawal of the pattern, may readily adjust itself to any irregularities in the bottom board and form a full and complete support for the same as the bottom board is lowered upon it.

The invention consists of the parts and combinations to be hereinafter described, and definitely pointed out in the claims, reference being had to the accompanying drawings and specification, which disclose one form in which I have contemplated embodying the invention.

In the drawings, Figure l is a plan view of a molding-machine of the turn-over type with a form of the present invention applied thereto. Fig. 2 is a side elevation of the parts shown in Fig. l. Fig. 3 is an enlarged plan view of the parting stand detached. Fig. 4 is a sectional elevation on the line 4 4, Fig. 3, some ofthe parts being broken away. Fig. 5

is a cross-section on line 5 5, Fig. 3. Fig. 6 is f a detail of one oi' the parting-stand arms. Fig. 7 is an elevational and part-sectional view of a modiiied form of the invention.

The pattern-plate A, Fig. 2, the pattern A ,Y secured thereto, the arms A2 A2, pivoted to a main supporting-frame A3 at A4, the arm A5,

also pivoted to the main frame, the handles AG and A5, by which to swing the flask A8, its connected parts, and bottom board A2, are or may be of any usual or desired character and construction, whereby after the iiask is rammed with sand the parts may be turned about the pivot-point A4, so that the bottom board A9 may rest upon the parting stand, (designated as awhole byB, Figs. l and 2.) In order to assist in this turning movement, a spring A10 has one end secured to the main frame and its opposite end secured at A to extensions of the arms A2.

The supporting-stand B is preferably connected to the main frame A3 by an arm B, said arm having appropriate spread portions B2, Fig. 3, between the ends of which is the cross-piece B3 of the parting stand, and connected to this portion B3 suitable rollers or truck-wheels B4 maybe employed, if desired. (See Figs. 1,2, and 5.)

Projecting centrally upward from the part B3 of the stand is the bracket B5, suitably connected to the part B3 by suitableb olt-andslot connection, as shown at B5., Fig. 4, whereby the bracket B5 may be vertically adjusted as desired.

Pivotally connected to the bracket B5, centrally of itself and by means of a pin O, is the stand-beam O, suitable washers b b being disposed between it and the bracket B5 on the one side and between it and a washer O2 on the other side in order to restrain free turning movement of the stand-beam on the pivotpin O. Surrounding the end of the pin C is the spring O5, an adjustingfnut C4 determining the spring-pressure of the washers b upon the stand-beam, and consequently the resistance to free movement in said beam.

The ends of the beam C are provided with apertures which are internally threaded to receive the stems D of the supporting-stands D for the supporting-arms D2, suitable locknuts d being provided for maintaining the stems in adjusted position.

Extending transversely between the upper ends of the supporting-stands D is the rod F, upon which is mounted the supportingarms D2, Figs. 3 and 4, so that said supporting-arms D2 may turn upon their .pivotal connection with the rod F in parallel but independent vertical planes. In order to restrain the free turning movement of the sup- IOO IIO

porting-arms D2, the upper ends of the supporting-stands Dl are provided with inwardly-beveled races d', and each of said supporting-arms is provided with a boss d2, likewise beveled, a washer di* being placed, preierably, on the exterior of the supportingstand Dl and the several parts being properly secured together by means of suitable nuts d4 d4 on the ends or the rod F. To produce the necessary irictional restraint to movement of the supporting-arms D2, springs f are placed about the rod F and disposed between the face of the supporting-arms D2 and suitable adjusting-nuts d, Fig. 4, whereby upon proper adjustment of the spring tension, as will be obvious, the supporting-arms D2 may be readily restrained from a iree movement, while yet being permitted to yield when a slight force is exerted.

Each of the supporting-arms D2 is provided with a bearing-surface d, which is adapted to receive the surface of the bottom board of the mold in a manner to be hereinafter pointed out.

The stems D of the supporting-stands D preferably extend downward past the ends of the stand-beam C through suitable openings c in the frame of the parting stand, as seen in Fig. 4.

From the construction thus far described it will be seen that the supporting-arms D2 can turn about their pivotal connection with the partingstand in vertical planes independently of each other and that they are restrained yieldingly in this movement by means of the springs f in the manner described. It will also be evident that the supporting-arms D2 may be bodily raised or lowered by the adjusting-stem D and nut d and that they may also after such desired adjustment is made be then moved bodily in vertical planes by the swinging movement of the stand-beam C about its pivotal connection C with the parting-stand frame. The effect of this character of adjustment is that the supporting-arms are connected to the parting-stand frame by a universal joint and that should the bottom board be warped or twisted the supporting-surfaces d of the supporting-arms will adjust themselves readily to the deformed condition of the bottom board, and thereby afford at all times a firm, even, and uniform support for the bottom board during the withdrawal of the pattern.

It is obvious, of course, that changes may be made in the details of structure hereinbefore described without departing from the spirit of the present invention, which contemplates supporting-arms having bearing portions or surfaces at different or widelyseparated points, so that when the bottom board is turned down upon such widely-separated points it will receive support from them by virtue of the automatic adjusting movement of these arms and their surfaces to conseaeos form to the irregularities in the bottom board itself.

Among the changes that may be made in the present structure I have illustrated in Fig. 7 the modiiied form of parting stand and supporting-arms, wherein a ball-and-socket joint adapted Jfor small machines may be employed. In this structure the ball Gr may be secured to a stem which is screw-threaded into a post G, as indicated, and the socket member G2 may carry the central arms g g for supporting the bottom board of the flask and at widely-separated points g g, the number of such points being regulated to suit conditions of use or the size oi" the flask and of the partsbeing manipulated.

Having thus described my invention, what I claim, and desire to secure by Letters Patent isl). In a machine or the character described, the combination of a main frame, a parting stand connected to said main frame, said parting stand comprising a plurality of supporting-arms, each provided with a bearingsurface, means for permitting said arms to have movement in planes at right angles to each other, and devices for yieldingly restraining said arms from such movement.

2. In a machine of the character described, the combination of a main Jframe, a parting stand connected to said main Jframe, said parting stand comprising a plurality of supporting-arms each provided with a bearingsurface for sustaining a mold, adjusting devices for adjusting said arms bodily in a vertical direction, means ror permitting said arms to have movement in planes at right angles to each other, and devices for yieldingly restraining said arms from such movement.

3. In a machine of the character described, the combination of a main Jrame, a parting stand connected to said main Jframe, said parting frame comprising a plurality of supporting-arms, each provided with a bearingsurface for a mold, said arms being pivoted to swing in vertical planes, and means for moving said arms bodily in said planes.

4. In a machine of the character described, the combination of a main frame, a parting stand connected thereto, said stand comprising a plurality of supporting-arms adapted to swing independently in vertical planes, means for moving said arms bodily in said planes, and 'yielding devices normally restraining said movements of the arms.

5. In a device of the character described, the combination of a parting-stand frame, a stand-beam mounted to swing in a vertical plane on said Jrame and a supporting-arm pivotally connected to each end of said standbeam to swing in a vertical plane at right angles to the plane in which said beam swings.

6. In a device of the character described, the combination of a parting-stand frame, a stand-beam mounted to swing in a vertical lOO IIO

plane on said frame and a supporting-arm pivotally connected to each end of said standbeam to swing in vertical planes at right angles to the plane in which said beam swings, and means for bodily adjusting said arms vertically With respect to the ends of the stand-beam.

7. In a device of the character described7 the combination of a parting-stand frame, a stand-beam mounted to swing in a vertical plane on said frame, swinging supportingarms for a mold carried by said beam and means for restraining the free swinging movement ofthe beam and arms.

S. In a molding-machine, a parting-stand frame, and a plurality of supporting-arms for a mold pivotally connected to said frame to swing in vertical planes parallel to each other to compensate for any irregularities in the bottom board supported by said arms.

9. In a molding-machine, a parting-stand frame, a plurality of supporting-arms for a mold pivotally connected to said frame to swing in vertical planes parallel to each other to compensate for any irregularities in the bottom board as the latter is laid on said supporting-arms7 and means for yieldingly restraining the swinging movement of Said OTTO W. SCHAUM.

Witnesses B. G. ELLIOTT, L. M. LENTZ.