US870511A

US870511A - Foundry apparatus.

Info

Publication number: US870511A
Application number: US32114306A
Authority: US
Inventors: George B Hayes; John A Hayes
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-06-11
Filing date: 1906-06-11
Publication date: 1907-11-05
Anticipated expiration: 1924-11-05

Description

'PATENTED NOV. 5, 1907.

G. B. & J. A. HAYES. FOUNDRY APPARATUS.

APPLICATION FILED JUNE 11. 1906.

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G. B. & J. A. HAYES.

FOUNDRY APPARATUS. APPLICATION FILED JUNE 11. 1906.

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GEORGE B. HAYES, OF BUFFALO, NEW YORK, AND JOHN A. HAYES, OF BURLINGTON, NEW JERSEY; SAID GEORGE B. HAYES ASSIGNOR TO GEORGE D. HAYES, OF BUFFALO, NEW

YORK.

No. s reen.

To all whom it may concern:

Be it known that we, GEORGE B. HAYES and JOHN A. HAYES, citizens of the United States, and respectively residents of Buffalo, Erie county, New York, and Burlington, in the county of Burlington and State of New Jersey, have invented a certain new and useful Improvement in Foundry Apparatus, of which the following is a specification.

This invention relates to the formation of molds for making castings, such as pipe, and has for one object the'provision of means by which the workmen may change rammers, when ramming a pipe-mold or any other deep mold, with a minimum of effort and time; another object is to secure uniform results in ramming such a mold; another object is to enable the rammer to work under like conditions at all stages of the operation of ramming th inold; another object is to allow the workmen to shift from one mold-flask to another with the minimum of effort and time; another object is to relieve the workmen of all effort except that of guiding and controlling the action of the ramming tools; another object is to use the same apparatus in ramming molds of different sizes or diameters; other objects will appear hereinafter.

The invention is embodied in the apparatus illustrated in the accompanying drawings, fdrming part hereof, in which Figure 1 is an elevation, partly in section; Fig. 2 is a plan; and Figs. 3 and 4 are detail views, taken at right angles to each other, of the top of the piston shown in Fig. 1. v

In the drawings, the reference character 1 designates a flask of any usual form land construction, which is mounted on the turntable 2, which also maybe of any usual construction and operation, being shown as provided with the circular bevel rat k 3, with which a bevel, gear 4 meshes to drive the turntable. The pattern is in two sections or parts, as usual, the base 6 and the upright part 6, so that the upright may be drawn out of the mold in the usual manner.

The reference 7 marks a hydraulic, steannor air cylinder, and 8 marks the inlet pipe thereof; 9 is the piston of the said cylinder 7, which has rings 10 thereon, and 11. marks similar rings inside of the cylinder 7 near the top thereof. The cylinder 7 and piston 9 are of lengths such that the piston may rise as far as required and yet be steady and non-bound in the cylinder, so that it may drop at once on the release of the pressure in the cylinder 7. The piston 9, at its top, which ex- FOUNDRY APPARATUS.

Patented Nov. 5, 1907'.

tends above that of the cylinder, has a turntable 12 mounted thereon, and the top of the turntable affords a runway for a small truck 13. The truck 13 supports a plaftorm 14 on which the workman stands. The platform 14 overhangs, forward and back, the turntable 12 and even the edge of the pit in which the said flask l is placed. At the back end of the platform is an upright or riser 15, to the top of which is connected the horizontal arm 16. The arm 18 is braced up by the brace 17 The riser l5, arm 16, and brace 17 form a jib that rises and falls and turns with the platform 14 and at the front of the said platform.

is preferred to support the rammers as follows: On the jib are pulleys 18 for the cords, chains or straps 19 to one end of which the rammers 20 are made fast, while to the other end of said cords, chains, or straps 19 are made fast the counterweights 21, there being a counterweight for each rammer, as will be understood, so that each rammer may be pulled down, or shoved up independently of all the other rammers. The rammers 20 are operated by any suitable power, as steam or com pressed air, the tubular connections 25 for supplying the operating fluid to the cylinders 22 of the rammer s 20 being supported by the jibs. It will be noted that the rammers shown are operated independently of any operated by steam, air or electricity, does not depend for its operation on the jib, though, for convenience, the means whereby power is conveyed to the rammer may be attached to the jib. The advantage of this arrangoment is that the workman standing on the platform may manipulate the rammer freely and may start, use and stop it at will and in all positions, while it permits him to know, by the feel, how the sand is being rammed and to correct any softness that he may detect iii a lnold. lengths, for the operation is that one rammer (the longest) is used to ram the sand for a certain distance, after which it is removed from the flask, and the next longest rannner is used for a given distance, and so on. Thus, if lhere be two rammers on the jib, the platform 14 is raised half the height of the flask while the longer rammer is used (or a little more than half the height of the flask), after which the said longer rammer is run up out of the flask and shoved to one side, and the other rannner is put inside the flask, and the platform 14 is then lowered to the starting point, and the ramming which forms a counterbalance to the workman standing l The rammers on each jib are of different The jib may carry one, two, or more rammers, and it mechanism on the jib; that is, the rammer, whether continued. With three rammers per jib, the distances are a little over one-third of the height of the flask, with a higher movement of the jib to enable the rammers to be removed therefrom; and so on for other numbers of rammers. p

The trucks 13 are shown as running under overhangs 23 on the turntablel2, whereby they are prevented from tipping, though -it is intended, as above stated,

that the weight of theworkman shall be balanced by that of the upright or jib. Removable stops 24 prevent the trucks from running off the turntables.

Means, such as a three-way cock 26 in the pipe 8, a waste pipe 26 a double lever 27 for operating said cock, and chains 28, may be provided for the workmen on the platforms 14 to control the rising and falling motion of the platforms and also to turn the turntables 14 from one flask to another, as indicated in Fig. 1. Or the platforms. on which the workmen stand may be raised and lowered by any means, hand .or power, that may be suited to the purpose, and so also of the turning of the turntables. v

Sand is automatically conveyed to the flasks (means not shown) and drops between the flask and the pattern, While the workmen, standing on the platforms 14,

hold the cylinders 22-01? the rammers by the handles thereon, and also control the air or steam supply whereby the rammers are worked. Theflask is revolved by the de scribed means, and the rammers beat upon the sand, the workmen tilting and otherwise manipulating the rammers to ram'the sand properly in all parts of the .flask or mold, while the platforms rise more or less them from the flasks, and place the shorter rammer in the fiask,'after which the platforms are lowered to their starting points, the sand is turned on, and the '45 \operation is resumed. When the platforms again reach oyer the completed mold to lift out the pattern 6, and

place it in another flask, while the platforms 14 are turned to the adjoining flask to enable the workmen thereon to begin ramming operations herein, as indicated by the dotted lines in Fig. 2.

It is thus seen that'themamming is done in two (or more) steps, so to say, during the first of which the workmen use the longer rammers and by which they mm the flask to about half its height, and during the second of which steps they use the shorter rammers and complete the ramming of the mold. Or more than two rammers may be used in more than two steps without departing from the spirit of the invention or the scope Y rising platforms on which the men stand.

Many changes in details and substitutions of equivalents may be made without departing from the spirit of the invention or the scope of the claims hereof.

' What we claim as new and desire to secure by Letters Patent of the United States is- 1. In foundry apparatus, the combination with a platform for workmen to stand upon, means for raising and lowering said platform, an overhead jib carried by and raised and lowered with said platform, and a rammer suspended by counterweight from said jib in position to be raised, lowered and manipulated by workmen on said platform. I

:2. In foundry apparatus, the combination of a platform for workmen to stand upon, means for raising and loweringlsaid-platform, an overhead jib carried by and raised and lowered with said platform, and a plurality of rammers suspended by counterweight from said jib in position to be raised, lowered and manipulated by workmen on said platform.

3. In foundry apparatus, the combination of a platform for workmen to stand upon, means for raising and-lowering said platform,-and a rammer suspended from said platform in position to be manipulated by workmen standing on said platform and raised and lowered by said platform.

-l. In foundry apparatus, the combination of a platform for workmen to stand upon, means for raising and lowering the same, means whereby said platform may be moved horizontally independently of said raising and lowering means, and a rammer supported from and moved up and down and horizontally with the platform in position for manipulation by the workman on the platform, whereby said rammer with operator may be supported in proper place directly over flasks of different sizes.

5. In foundry apparatus, the combination of a platform for workmen to stand upon, means for raising and lowerin the same, an overhead jib carried by and raised and lowered with-said platform, pulleys on said jib, anda rammcr and a counterweight connected by ii cord or the like running over said pulleys.

6. in foundry apparatus, the combination of a platform for workmen to stand upon, means for raising and lowering, the same, an overhead jib carried by 'and raised and lowered with said platform, pulleys on said jib, and rammcrs and countei weights connected by cords or the like running on said pulleys.

7. ln foundry apparatus, thev combination of a platform, menus for raising and lowering said platform, means whcrcbysaid platform may be moved horizontally independently, a jib mounted on said platform, pulleys mount ed on said jib, and a connected rammorand counterweight supported on said pulleys. I l S. In foundry apparatus, the combination of a turntable, aplatform thereon, means for raising and lowering said turntable and platform, and a rummcr supported from and raiscd, lowerod and operated independently of said platform.

9. ln foundry apparatus, the combination of a .turntable, a platform thereon for workmen to stand upon, a jib connected with said platform, a rammer suspended from and movable-relatively to said jib, and means for raising" and lowering .said turntable andplatform'.

10 In foundry apparatus, the combination of'a turntable, a platform for workmen tostand upon and movable horizontally thereon, means forraising and lowering said turntable and platform, and a rammer supported from said platform. I

11. In foundry apparatus, the combination of a turntable, a platform movable horizontally thereon, a jib mounted on said platform, pulleys'on said jib, a rammer and a counterweight connected by a cord or the like running on said pulleys, and means for raising and lowering said turntable and platform.

12. In foundry apparatus, the combination of a turntable, a platform movable horizontally thereon, overhead pulleys supported from said platform, rammers, counterweights, and cords running on said pulleys and connectlng rammers and counterweights, with means for raising and -lowering said turntable and platform.

Signed at New York city in the county of New York, 15

Witnesses A. H. DAVIS, R. W. BARKLEY.