US727900A - Molding-machine. - Google Patents

Description

No. 727,900. PATENTED MAY 12, 1903.

B. B. CARTER & F. J. STRATTON.

' MOLDING MACHINE.

No. 727,900.- PATENTED MAYlZ, 1903.

B. B. CARTER & -F. J. STRATTON.

MOLDING MACHINE.

APPLICATION FILED APR. 16, 1900.

3 SHEETS-SHEET PATENTED MAY 12, 1903. a B. B. CARTER & P. J. S-TRATTON.

MOLDING MACHINE.

APPLIOATION FILED APR.'16, 1900.

3 SHEETS-SHEET 3.

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UNITED STATES.

PatentedMay 12, 1903.

PATENT OFFICE.

BYRON B; OARTER'OF'HINSDALE, AND FRANK J. STRATTON, oF GROSS- DALE, iLLINoIs.

'MOLIDINQ- .MACHI'N E.

SPECIFICATION forming part of Letters PatentNo. 727,900, dated May 12, 1903.

7 Application filed April 16, 1900. Serial No. 13,011. (No model. i v

To all whom it may concern.-

Be it known that we, BYRON B. CARTER, a resident of Hinsdale, in the county of Dupage, and FRANK J. STRATTON, a resident of Grossdale, in the county of Cook, State of Illinois,

citizens of the United States, have invented an adhesion between the flask and stripper-plate.- A molding-machine of our invention con-- sists of the various features, combinations of features, and details of construction hereinafter described and claimed. 1 s 1 In the accompanying drawings a moldingmachine of our invention is fully illustrated.

Figure 1 is a rear elevation of a molding machine of our invention. Fig. 2 is anend view thereof. Fig. 3 is a top plan view thereof, the stripper-plate being-removed. Fig. 4 is an enlarged sectional view of the cylinder. Figs. 5, 6,.and 7 are enlarged views of the cock which controls the delivery of fluid-under pressure to the cylinder, and Figs. 8 and 9 are enlarged detail views.

The frame of our improved molding-machine consists of a suitable base A, in which are secured upright rods or standards A, to which the stripper-plate A is secured in any desired or approved manner. Located beneath the stripper-plate A and freeljiimovable toward and from saidstripper-plate on suitable guides, is thepattern-carrying head.

B, which, asshown, consists of a plate B, removably secured to a frame 13*.

A, to which are fitted suitable bearings in the frame B V B represents a pattern supported in operative position on the pattern-plate B.

As to the foregoing features the'c'onstruction of our improved molding-machine is old and well known and will be readily andfully 5o understood by a person familiar with the art t'u'rnbuckles" 0 0 respectively. thus 'madefor adjusting the relatively angu- As'shown, the guides for the pattern-carrying head'in its movement toward and from the stripperplate A are formed. by the rods or standards from an inspection of the drawings and without a more detailed description thereof. Movement toward andfrom the stripperplate'A is imparted to the pattern-carrying head B by means of suitable operative connection with shafts O, revolubly mounted in the machine-frame. shafts C, which extend transversely of the machine adjacent to the ends thereof and are connected by means of 'a rod 'C,-pivotally connected to cranksc, keyed or otherwise rigidly se'cured toxs'aid'shafts 0. Movement of either shaft willthus imparta-correspond- .ingmovement to the other, the relation and adjustment of parts being such'that the angular movementjof said shafts will be the same.

In the preferable construction shown the pattern-carrying-head ;B is connected to the shafts O by means of toggles C the upper members of which are pivotedto saidhead, and the lower members of which are keyed to said shafts O. Oscillation of said shafts will thus operate in an obviousfmanner to flex and straightensaid toggles O and thus toimpart movement to said pattern-carrying head B toward and from the'stripper-plate A Formed on the hubs of the lower toggle members are shoulders Of, which p'r'oject ben'eath the flange of the base A, forming stops to, limit the pivotal movement of the shafts O to positions correspondili g to the extreme eleyation and depressionof the pattern-carrying head. As preferably constructed, also,

the rod 0 and the upper members of the toggles (J are-made in sectionsconnected by Provision is 1m. positions of the shafts'C and the lengths .of. the toggles 0 within limits, thus providing means for maintaining the pattern-carryinghead B level and treme elevation. 7

Our improved machine is adapted to be operated either by hand-=or byfpower: The means for operating said machine by hand consist of a hand-lever D, adapted tobe detachably engaged with a suitable holeformed in a hub or collar 01, rigidly secured to one of the shafts C.

The means for operating the machine by for adjusting its ex- As shown, there are two power consist of a motor comprising a cylinder E and a piston E fitted thereto, the piston-rod E of which is applied to one of the shafts C, so that reciprocation of said piston will impart an oscillatory movement to said shaft 0. In the preferable construction shown the cylinder E is pivoted upon one of the shafts (J, and the outer end of the pistonrod E is pivoted directly to a crank e, secured to the other shaft 0. A simple and cheap form of cylinder consists of a section of tube, to the ends of which are secured heads E E The head E may and preferably will be so]- dered or otherwise permanently secured to the cylinder E, and formed thereon is a transverse sleeve 6, the bore of which is fitted to the end of the shaft 0, thus forming the desired pivotal connection thereto. Said sleeve 6' is maintained in position upon said shaft 0 by a collar 6 and a stud-bolt e threaded into said shaft. The head E is removably secured to the cylinder E, being preferably threaded thereto. To maintain a tight joint between the cylinder E and the cylinder-head E a suitable packing is provided. As shown, said packing consists of what may be designated as a gasket E preferably leather, secured to the inner surface of said cylinderhead, the edges of which project sufficiently to be clamped between the end of the cylinder E and the inner face of said cylinderhead E when said cylinder-head is secured to said cylinder. As shown, the gasket is secured in proper position on said cylinder-head by means of a disk E, bolted to said cylinder-head, between which and said cylinder head said gasket E is clamped. Around the piston-rod E the gasket is cupped, as shown at 6 a hole being formed in the disk E sufficiently large to allow fluid under pressure free access to the exterior of the cupped portion a of said gasket E thus forming a piston-rod packing. Formed on the cylinder-head E is a sleeve 6 in which is formed the bearing for the piston-rod E said sleeve being long enough to provide a bearing of desired length for said piston-rod.

A shield E secured to the cylinder-head E extends over the piston-rod F. and prevents sand from falling thereon during the formation of the mold. In the preferable construction shown the cylinder-ports e e are formed directly in the cylinder'heads E E In practice we prefer to use compressed air for operating our machine; but any other medium, as steam, water, or the like, may be used.

In the preferable construction shown the admission and discharge of fluid under pressure to and from the cylinder E are controlled by means of a suitable cock F, the casing of which comprises four branchesfff f which communicate with the bore of the casing of said cock in which the plug of said cock is seated through ports or openings f between which are lands f Opposite the ports of said cock the plug is cut away, as shown at f f, in

such manner that the ports to the branches ff may be brought into communication with the ports to the branches ff by properly rotating the plug of said cock, the relation and adjustment of parts being such that when the port to the branch fis in communication with the port to the branch f the port to said branch f will be cut off from the port to the branch f while the port to the'branch f will be in communication with the port to the branch f and will be cut olf from the port to the branch)", and vice versa. The ports to the branches ff are not designed to communicate with each other at any time. Stops f on the casing of the cock project into the path of travel of a lug f" on the plug of the cock and operate to limit the pivotal movement thereof, one extreme position of said plug efiecting full com munication of the port to the branch f with the port to the branch fand of the port to the branch f with the port to the branch f and the other extreme position of said plug effecting full engagement of the port to the branch f with the port to the branch f and of the port to the branch f with the port to the branch f The plug of said cock F is operated by means of a hand-lever F, secured to the end thereof. The branch f of the cock F is connected with a source of supply of fluid under pressure. (Not shown.) The branch f is the discharge or exhaust branch thereof. The branchesff are respectively connected with the ports 6 e of the cylinder E. As shown, the connections between said cock F and the cylinder-ports comprise pipes f which extend to the end of the machine, and flexible tubesf, which connect said pipesf with the branches ff of the cock F. In the preferable construction shown also the cock F is secured to the pattern-carryingheadBin position such that the hand-lever F may be conveniently grasped by the machine operator. The flexible connectionsf provide for desired vertical movement of the pattern-carrying headBandforpivotal movementof the cylinderE without wrenching the connections between said cock F and the cylinder E. Preferably, also, a petcock F is secured in the discharge or exhaust branch f of the cock F, thus providing convenient means for regulating the size of the discharge-opening and the escape of the fluid from the cylinderE in order to preventthe pattern-carrying head from being raised or lowered too rapidly under the influence of the fluid under pressure admitted to said cylinder.

Buffer-springs G, inserted between the pattern-carrying head B and the base A of the machine, and preferably around the rods or standards A as guides, operate in a familiar manner to stop the pattern-carrying head B gradually as it approaches the lower limit of its movement, thus preventing jarring and shock to the parts of the machine. Said springs G are made sufficiently strong to raise the pattern-carrying head B and the parts carried thereon through a portion of its travelindependently of the toggles O Said springs will thus operate in an obvious manner to prevent said toggles from becoming locked should they be flexed at too great an angle.

As illustrated, a section H of a flask, either the drag or the cope, is supported upon the stripper-plate A being secured in operative position thereon bydowel-pins h in the usual manner. As preferably constructed our improved molding-ma'chine comprises means for slightly raising the section of flask H, as the pattern-carrying head B descends, to break the adhesion between said section of flask and the stripper-plate, thus facilitating the removal of said section of flask. As shown, the means for so raising said section of flask consist of rods H, which are longitudinally movable in. suitable bearings formed in the base A of the machine and in the stripperplate A the upper ends of which are adapted to be brought into contact with the section of flask H when said rods are raised and the lower ends of which are in the path of travel of projections on the shafts C. As shown, said projections on said shafts 0 consist of the stop-shoulders C on the hubs of the lower members of thetoggles C the relation of parts being such that said stops C will strike the lower ends of said rods H just before the pattern-carrying head 13 reaches the lower limit of its movement and will raise said rods, so as to lift said section of flask H a desired distance. Pins h, secured in said rods and adapted to rest on a rigid portion of the machine-frame, maintain said rods inoperative positions.

1. In a moldingahaohine, the combination of a stripper-plate, a pattern-carrying head,

guides on which said pattern-carrying head is movable toward and from. said stripperplate, a shaft or shafts revolubly mounted in the machine-frame, operative connection between said shaft or shafts and the patterncarrying head whereby rotation of said shaft or shafts will impart movement to said' pattern-carrying head toward and from the stripper-plate and means to rotate said shaft or shafts, said means comprising a pivoted cyl-' inder and a piston fitted thereto the-pistonrod of which is pivoted to a crank secured to an actuating-shaft, and means under the con-' trol of the operator for admitting fluid under pressure to and exhausting it from said cylinder, substantially as described.

2. Ina molding-machine, the combination of a stripper-plate, a pattern-carrying head, guides on which said pattern-carrying head is movable toward and from said stripperplate, a shaft or shafts revolubly mounted in the machine-frame, operative connection between said shaft or shafts and the pattern carrying head whereby rotation of said'shaft or shafts will impart movement to said pattern-carrying head toward and from the stripper-plate and means to rotate said shaft or shafts, said means comprising apivoted cylinder, a piston fitted thereto .the piston-rod of which is pivoted to a crank secured to an actuating shaft and a manually-operated valve which controls the admission of fluid .under pressure to said cylinder and its exhaust therefrom, substantially as described.

3:. In a molding-machine, the combination of a stripper-plate, a pattern-carrying head,

guides on which said pattern-carrying head inder, a piston fitted thereto the piston-rod of which is connected to a crank'secured to an actuating shaft, a manually operated valve and flexibleconnection between said valve and said cylinder, substantiallyas described.

4. In a-molding-machine, the combination witha stripper-plate,a pattern-carrying head, guides on which said pattern-carrying head is movable toward and from said stripperplate, means to impart movement to said pattern-carrying head toward and from said strip-.-

per-plate, said means comprising toggles applied to said pattern-carrying head and means to flex and straighten said toggles, of stopshoulders-on the hubs of the lower members I of said toggles which extend under rigidportions ofthe machine frame'and lifting-rods longitudinally movable in suitable bearings in the base of the machine-frame and in the stripper-plate, the-lower ends of which are in the paths oftravel of said stop-shoulders on the hubs of the lower toggle members so as to be raised thereby when the pattern-carrying head reaches the lower limit of itsmovement, substantially as described.

5. .In a molding-machine, a frame having upturned sides to constitute a stripper-plate support, two parallel operating-shafts mounted on the lower part of the frame, adjustable 1 means to rock said shafts in unison in oppo-- site directions;- a pattern-carrier vertically slidableon the frame, and connections between the pattern-carrier and the-operatingshafts, eccentrically connected 'With the latter, to raise and lower the pattern-carrier by rocking movement of the operating-shafts,

said connections being independent of the means for rocking the shafts.

In testimony that we claim the foregoing as our invention we have hereunto set ourhands this 9th day of April, 1900.

' BYRON-B. CARTER.

Witnesses:

PERCY B. HERR, H. O. CHASE.

FRANK .I. STRATTON.

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