US1012829A

US1012829A - Casting-machine.

Info

Publication number: US1012829A
Application number: US48351009A
Authority: US
Inventors: Frank Engel
Original assignee: National Battery Co
Current assignee: National Battery Co
Priority date: 1909-03-15
Filing date: 1909-03-15
Publication date: 1911-12-26
Anticipated expiration: 1928-12-26

Description

F. ENGEL.

CASTING MACHINE.

APPLICATION FILED 11, 13.15, 1909.

Patentd Dec. 26, 1911.

3 SHEETS-SHEET 1.

%-QWZ6T7@Z P. ENGEL.

CASTING MACHINE. APPLICATION FILED MAR.15', 1909.

Patented Dec. 26, 1911.

P. ENGEL. CASTING MACHINE.

APPLICATION FILED MAR. 15, 1909.

Patented Dec.26, 1911.

3 SHEETS-SHEET 3.

A Q77 130717 1; x1021? 6279a! 30 vation of the machine.

UNITED STATES FRANK ENGEL, or BUFFALO, NEW YORK, PANY, OF-BUFFALO, NEW YORK,

PATENT OFFICE.

ASSIG-NOR '10 NATIONAL BATTERY COM- A COBFPOBATION OF NEW YORK.

CASTING-MACHINE.

Specification of Letters Patent.

PatentedDec. 26,1911.

1909. Serial No. 483,510.

Application filed March 15,

To all whom it may concern. 1

Be it known that I, FRANK ENGEL, a citizen of the United States, residing at Buffalo in the county of Erie and State of New York, have invented a certain new and useful Improvement in Casting-Machines, of which the following is a specification.

My invention relates to casting machines and the objects of the invention are, first, to provide a machine adapted to both form the casting and remove the gate or sprue therefrom, second, to provide a construction such that the gates will be automatically sheared off as the mold is being opened. Third, to

' provide means for ejecting the casting.

Fourth, to provide means for clamping the parts of the mold tight shut with a minimum of friction. Fifth, to provide correlating means whereby the major portion of the operation of the machine may be accomplishedby the manipulation of a. single lever. Sixth to provide 7 advantageous details of construction which will be more fully point ed out in the following description and claims. i

In the form of machine selected to 'illustrate my inventionzFigure 1 is a front elevation of the complete machine showing the same in closed position. Fig. 2 is an end ele- Fig. 3 is a perspective view of the particular form of casting resulting from the form of mold chosen to illustrate the invention. Fig.4 is a plan view of the complete machine showingthe same in readiness to receive the molten metal. Fig. 5 is a sectional elevation on the line 5'5Fig. 4. Fig. 6 is a perspective view. of'the particular form of the ejecting member used in the machine here illustrated. Fig' 7 is a perspective View showing the ejecting cams and the bottom side of the plate or block which cooperates-with" said cams. Fig. 8 is a perspective view of the top'of the mold; used in this particular machine. Fig. 9 is a top view'of the shearing cam and a portion of its operating lever.

Similar numerals refer to'similar' parts throughout the several views.

The mold 10 contains one or more mold cavities for forming the castings 11,'the numher in the present design being five, as shown in dott'edlines Fig. 4. The castings may assume various forms but for illustration I have selected a'form adapted tobe used as a battery connector and having eyes 12 at their ends as shown in perspective in Fig. 3.

The mold may be supported upon any suitable-base, the base in the present form consisting of a foundation plate 13 to which are secured four standards 14 to which the mold plate is bolted. In the present preferred design the mold is raised somewhat above the'fou'ndation plate to afford space for the ejecting mechanism hereinafter described.

The mold is adapted to be closed by a cover 16 which is-hinged to the mold and is provided with gate apertures 17 through which the molten metal may be introduced into the mold. For convenience in pouring, a basin or depression 18 is formed in the top. of the cover surroundingthe gates therein as best shown in Fig. 8. The cover is not only hinged to the mold so that it may be raised.

and lowered to open and close the mold but is also laterally shift-able for shearing off the gate-metal after the casting has been formed.

In the preferred construction the cover is provided with laterally extending hinge pins 20 adapted to both rotate and shift laterally within the apertured lugs21. In the present instance these lugs are formed at the upper end of the hangers 22 bolted to the back of the mold as best shown in Fig. 5. By preference a counterweight 24 is attached at the end of an arm 25 extending rearwardly from the cover. 16 to serve as a counterbalance and hold it in open position indil cated by dotted lines Fig. 2. It is desirable.

that the cover-be provided also with a handle 26 for raising and lowering it. I

The lateral shifting of the gated cover is effected by cam mechanism which in the type of machine chosen for illustration consists of a lever 30 rotatably connected to the mold by means of a pin 31 securing into the mold; Rigidly securedto said lever is an eccentric or rotatable cam 32 adaptedto contact one edge of the cover. In the arrangement illustrated, when the eccentric is rotated in an anticlockwise 'diregtion the cover will be forcibly moved toward the left (Fig. 4) for shearing the gate metal from the castings. A cam surface 33 is formed on the edge of the cover opposite to eccentric 32 and is' adapted to be engaged by a pin 34 secured to the underside of the lever 30 as indicated .in Figs-4. .The arrangement is such that clamping effect is obtained by means of a catch 35 rigidly secured to the mold and having its under surface downwardly beveled -to engage and force the lever downwardly, as the latter comes into contact with it. This catch is an inverted L shaped member, the portion overhanging the lever as shown in Fig. 4, having its engaging underside beveled, as just stated. A raised boss 36 is by preference formed upon the top of the cover near the center thereof where it may be contacted by the lever just as the latter is about to be engaged by the catch 35. As a? result of this construction the lever is freely rotat-able until just prior to the moment when said lever comes forcibly into contact with the catch.

The. ejecting means for removing the castings from the mold consists, in this the preferred form, of a block or plate 38 having cam surfaces 39 adapted to-engage the cam surfaces 40 formed on the

stationary hangers

22 and 41. For symmetry the hangers 41 are similar to the hangers '22, previously mentioned, and are bolted or otherwise: secured to the edges of the mold as clearly shown in Fig. 5. By preference said block is guided in its lateral movement by the

stationary members

22 and 41. Loosely resting upon the block 38 is a plate 43 provided with ejector pins 44- adapted to engage the castings to lift them from the mold after they are finished. The ejector pins project up through the suitably apertured mold plate 10. and are vertically slidable therein, the result of this construction be-' ing that when the block is force laterally toward the highest portion of the ms 40 it will rise and force said plate and'the ejector pins upward to eject the casting. Said plate is urged to descend to normal posit1on by compression springs 45 interposed between said plate and the mold 10. The ejector pins may' assume various forms, their chief function being to eject the casting from the mo1d;- but 1n the presentcon- 'struction said pins have an addltional function, their heads being so shaped as to constitute a core for the eyes 12 at the ends of the castings' The heads on these particular. pins are conically tapered, the-smaller dimension lyin at the top as clearly shown 60 1n Figsx5 an 6. As a result they .will both form the eye and lift the casting after the latter'is formed.-. v 'Y The, preferred means for moving the 'block 38 horizontally to operate the ejector pins comprise alever 46, pivoted at the sta- ,where it will occupy the normal position for pouring. This movement of the lever also causes it to become engaged by the lower beveled surface of the catch 35 which presses the lever down hard upon'the boss 36 and holds the cover tightly in closed position. As a result the casting will be of proper thickness and moreover the formation of fins onthe casting will be avoided. The mold is now ready to be poured, the eject'or lever 46 occupying a position at the right as indicated in full lines Fig. 4, and the ejector pins being in lowest position as shown in Fig. 5. In this particular construction the heads of the pinswill lie within the mold cavity and constitute a core for forming the apertures at the ends of the castings. After the metal has been pouredinto the depression 18 ,in the cover '16, and the molds have been filled and given the metal surrounding the bottom of holes 17. It will be understood that my machine is best adapted for casting relatively soft metal such as lead and lead mixtures, and no trouble is experienced for theleverage produced by the combined eccentric 32 and lever 30 is very large compared tothe force exerted upon said lever.

By referring to Fig. 4 it will be seen that the boss 36 is approximately in a line between the pivot31 and catch 35. The result is that the lever 30 leaves said boss about the same time that it leaves said catch and consequently after the lever has been released from the catch there will be little or no friction upon the top of the cover.

As soon as the gates have been sheared and. the shearing lever 30 is back out of the way,

the cover isthrown back and-the ejector again lowered by gravity and the action of the springs 45. The gates and metal remaining in the apertures 17 may be readily rcmoved by inserting a punch or similar tool through the apertures 17 from the underside of the top, and the machine is then ready for a repetition of the operation.

What I claim as new and desire to secure by Letters Patent is:

1. In a casting machine, a mold and a gate member hinged thereto through which the molten metal may be introduced into the mold, said gate member being movable relatively to the mold for shearing ofi the gatemetal from the casting. c

2. In a casting machine a mold, a cover hinged thereto having a gate through which the metal may be poured, and means for moving said cover transversely to saidgate to shear the gate-metal from the casting.

3. In a casting machine, a part for containing the mold, a cover adapted to be raised from and lowered onto said mold containing' part, said cover having an aperture through which the molten metal may be poured, and means for moving said cover transverselyto its aperture for shearing off the gate-metal from the casting.

4. In a casting machine, a mold, a gate member hinged thereto and means for moving said gate member inthe direction of the axis of its hinge.

5. In a casting machine, a mold, a gate member hinged thereto and a cam device for moving said gatemember in the direction of the axis of its hing'e. c

6. In a casting machine, amold, a gate member hinged thereto, a rotatable lever, and means operated by said lever for movingsaidv gate member in the direction of the axis of its hinge. v

7. In a casting machine, a plurality of parts adapted to contain the mold, one of said parts being hinged to another and movable laterally to shear 01f the gate-metah and an eccentric for moving said hinged partlaterally.

8.'-In a casting machine, a mold, a gate .member hinged thereto, a rotatable lever,

and means on said lever adapted to contact opposite edges of said gate member for moving it back and forth parallel to the axis of its hinge.

9. In a. casting machine, a mold,-a gate member hinged thereto and laterally movable thereon, a lever pivotally connected to' otally connected to said mold and adapted to sition to prevent the formation offins on the casting.

11. In a casting machine, a mold, a longitudinally sliding gate member hinged thereto, a lever pivotally connected to said mold, and a catch member connected to said mold and having a beveled surface adapted to engage said lever to force the same down upon said gate member for holding it in close contact with the mold. I

12. In a casting machine, a mold, a gate member hinged thereto and laterally shiftable for shearing oif the gate-metal, a lever adapted to move said gate member laterally, and a member rigidly connected to said mold and having a beveled surface-adapted to engage said lever. for clamping'the gate member in closed position.

13. In a casting. machine, a stationary pivot and a stationary catch adapted to engage said lever to wedge the cover tightly closed.

14. In a casting machine a stationary mold, a laterally shiftable gated cover hinged thereto and means for shifting and for locking said cover. in closed position, said shifting and locking means being hand operable from a single part thereof.

15. In a casting machine a stationary mold, a laterally shiftable gated cover hinged thereto and means for shifting and for locking said cover'iii closed position, said shifting andlocking means including a pivoted lever, a plurality of cams operated thereby, and a catch adapted to engage said lever.

' 16. In a casting machine a mold, acove therefor, a lever for holding the same closed, a pivot for said lever, a catch for holding it against the cover-when closed, and a raised portion on saidcover adapted to be contact-L ed by said lever and being located approximately in line between the lever pivot and catch for the purpose described.

17. In a casting machine, a mold, a cover castings, and a hand operated cam device for operating said ejecting members.

19. Ina casting machine, a mold, an ejecting member passing through said mold and slidingly mounted therein, a block movable in the same direction as said ejecting member and also in 'a direction transverse thereto, cams for forcing said block in the direction of motion of said ejecting member, and other means for forcing said block transversely upon said cams.

20. In a casting machine, a'mold, an ejecting member slidingly mounted in said mold for ejecting the casting therefrom, a block vertically and horizontally movable adapted to operate said ejecting member, cams for moving said block vertically and hand oper- 15 Witnesses HERTHA GLAWATZ, CAMPBELL CARPENTER.