US905851A - Structure-lifting device for casting-molds. - Google Patents

Description

E. A. GUSTER.

STRUCTURE LIFTING DEVICE FOR CASTING MOLDS.

APPLICATION FILED JUNE 26, 1908.

905,851,. I Patented Dec. 8, 1908.

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STRUCTURE LIF'IING DEVICE FOR CASTING-HOLDS.

APPLICATION FILED Junnzs, 1903.'

905,851. I Patented Dec.8,108.

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EDGAR A. GUSTER, OF PHILADELPHIA, PENNSYLVANIA.

STRUCTURE-LIFTING DEVICE FOR GASTING-MOLDS.

Specification of Letters Patent.

Patented Dec. 8, 1908.

Application flied June 26, 1908. Serial No. 440,455.

To all' whom it may concern:

Be it known that I, EDGAR A. CUsTER, a citizen of the United States, residing at the cit of Philadelphia, in the county of Philade phia and State of Pennsylvania, have invented certain new and useful Improvements in Structure -Lifti.ng Devices for Casting-Molds, of which the following is a specification.

My. invention has relation to "structure lifting devices for casting molds adapted for use particularly in con unction with twopart molds carried on a turntable forfreeing the cast structure after pouring the molten mass formin the structure so as to prevent possible ch' ing of the surface of such cast structure due to material difference in temerature between the molten metal poured mto the mold and the interior of the mold receivin such mass; and in such connection the device of my present invention is espe cially ada ted for use, in the system of p1pe making s own and described in Letters Patent No. 870,817, dated November 12th, 1907, granted to me; and No. 887,070, dated May 12th, 1908, and in conjunction therewith particularly with a revolving turntable rovided in the latter atent with molds an a ouring ladle wit operating mechanism, w ich forms the sub'ect-matter of pending applications for Unlted States Letters Patent Serial No. 419,142,- and Serial No. 421,054, filed by me, respectively, March 4th and 14th, 1908, to both of which applications recourse ismade. he nature and scope of my present invention in the defined connectlon and relation of the same, will be more fully'understood from the following description taken with the accom anying drawings forming part hereof, in which a Figure 1 is a top or plan view, in broken section, of a turntable with a series of twopart molds mounted thereon, and in respectively three diflerent ositions of the copes with respect to the ifi'ag's of the-molds as illustrated, each mold with a cast structure therein being lifted away from the interior respective walls of the molds by devices of my present invention and shown in application thereto; and Figs. 2, 3 and 4, are, respectively, end elevational views of three ositions of the cope with respect to the drag of each mold as illustrated in Fig. 1, upon a turntable and in Fig. 3, is shown in cross-section on the line at, m, of Fig. 1, the stationary each mold interiorly provided with respectively semicircular recesses c, and 0 as illustrated in Figs. 2 and 3, and with pour-holes or gates d, d and d, as clearly illustrated in Fig. 1. To each upper corner of both sides is pivoted a goose-neck-like depending gravity or weighted arm 7, formed at the bottom into runner 0, having a front curved face a, and a rear projection e for engaging the curved head f, of a counter-weighted pawl 8. The pawl 8, is pivoted to the stationary drag a, of eachmold near the lower corner thereof, as clearly and fully illustrated, in Figs. 2, 3 and 4.

In the closed position of the cope a, against the drag b, in Fig. 3, with the casting therein, the structure embracing gravity arm 7, on each side, will have assumed the position, as illustrated in this figure and with the curved head j, of the pawl 8, bearing against the front face e, of the bottom of the embracing arm 7, freed from the pawl, and with the latter ready by the tripping device 10, projecting from the standards 11 and 12, as illustrated in Fig. 1, adjacent to the table 5, by contracting with the weight g, of the pawl to shift the same and head of the pawl 8, along over the flat bottom e, of the structure embracing arm 7, and so to lift the then formed structure 13, together with its internal 'composition core 14, away from the cope b, of the mold 6, and to thereby swing the same into a recess of the drag b, and the embracing arms I 7 and counter-weighted angular pawl 8, Will assume when the mold is in such position, that fully illustrated in Fig. 2, readyf by the device 10, riding along the weight of the pawl tion, the cast structure can then beremoved in any preferred manner, while the counterweighted pawl 8, is lockedto the rojection c of the arm 7, by means of the weight of the said pawl 8.

The instant, the structure is cast from a molten-mass, the head of the pawl 8, tends to shove the arms 7, to open the cope a, from the drag b, and in so doing, is overcome the center of gravity between the two-parts of the mold b, and the arms 7, and pawls S, and as the pawl tends to describe a. curve the forward ortion of the overbalanced arms 7, move orward and thereby the heads of the pawls 8, slide along the bottom of the arms 7, until the projections 0 engage the tips of the heads of the awls 8, to hold the same aided by the weig ted endsthereof, in their re-,

spective assumed angular positions with, re-

speot to each other, as illustrated in Fig. 4.

The gripping of the cast structure quickly upon the parting of the'cope a, from the drag b, of the mold 6,.oWing to the material diflerences in temperature between the metal of the structure and internal surfaces of the mold prevents possible chilling of the surface of the cast structure, and hence permitting the cast structure almost the instant cast to be brought into a space created and inwhich after chilling down of the metal quickly and cooling thereafter gradually, at the surrounding atmospheric tem erature, the structure remains sup orted, or a short period and until the sea cast structure is placed amon a pile of similar structures so cast to vannea by their own heat, under surrounding atmos heric conditions. 2

aving thus described the nature andobjects of my invention, what I claim as new and desire to secure by Letters Patent is:

1. Means of the character described, coma certain prising a mold, composed of a movable cope and a fixed drag, an embracin device pivoted to the cope on eac side, near the top thereof, and a counter-weighted pawl-device pivoted to the drag on each side near the bottom thereof, saidcounterweighted pawl-devipe adapted to ride said embracing structure" device and to lock the same, in a certain position thereof. v 2. Means of the character described, comprising a mold, composedof a movablecope and a fixed drag, an .embracin structure device pivoted to the cope on eac side near the top thereof and a counter-weighted pawldevice pivoted to the drag on each'side near the bottom thereof, said counter-weighted pawl-device adapted to ride said embracing structure structure device and to lock the same, in a certain osition and means to release the locked evices. f

3. Means of the character described, comprising a traveler mold, consisting of a cope and a drag, an embracing structure device connected with the co e on each side near the to thereof, a weig ted pawl-device connectec with the dragnear the bottom thereof and adapted to lock said embracing device in osition and means for releasing said pawlevice' from its locked position.

4. Means of the character described, comprising a traveler mold, consisting of a movable cope and a fixed drag, a weighted embracing structure device having a projection, said device connected with the cope and a weighted pawl-device connected with thedrag and ada ted to lock with said embracing device an means to permit of the release of one from the other, after freeing the struc-' ture from said cope and drag.

In witness whereof, I have hereunto set my signature in the. presence of two sub-,

scribing witnesses. i v

I EDGAR A. CUSTER. Witnesses: Y

J. WALTER DOUGLASS, THoMAs M. SMITH.

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