USRE6404E - Improvement in machines for forging metallic sockets - Google Patents

Description

Beissued-Aprirl 27, 1875. )L I YN G. FlTCH 8L P. SHAFFER. Machine forforging Metallic Sockets. No.6','4o4.

UNITED lSTATES PATENT QFFICE.

GEORGE FITCH AND PETER. SHAFER, OF ETNA, ASSIGNORS, BY MESNE ASSIGNMENTS, TO GEORGE FITCH AND JOHN D. IIIEBER, OF SAME PLACE, AND FREDERICK G. SEGEBRUCK, OF MILLVALE, FA.

-IMPRCVEMENT IN MACHINES FOR FORGING METALLIC'SOCKETS.

- Specification forming part of Letters Patent No. 134,045, dated December 17, 1872; reissue No. 6.4.04, datedv April 27, 1875 application tiled January 29, 1875.

To all whom t may concern 3e it known that we, GEORGE Frrcn and PETER Snaren, both of Etna borough, Allegheny county, Pennsylvania, have invented a new and usel'ul Improvement in Manufacture yot' Metallic Sockets; aml we do hereby declare the following: to be a full, clear, and exact description otl thc same, reference being;` had to the '.uzcompanying drawing, making` a part of this speciticaton, in which-like letters indieating:r like parts in the several tigures- Figure 1 is a. side elevation ot' the improved machineior welding and shaping metallic sockets. Fig. 2 is a vertical sectional elevation along the plane ot' the line x at, Fig. 1. Fign is a detached sectional view illustrative ot the means t'or il'nparting a reciprocating motion to the dies. Fig. 4 is a plan view of the dies and mandrel detached. Fig. 5 shows a welded and inished socket. Fig. ti illustrates its use as a tubeeonncction, and Fig. 7 is a perspective view ot' one ot' the dies.

This invention consists in an improved machine i'or the nn'lnut'acturc ot' metallic sockets usually employed t'orjoininev together the adiaeent ends ol' gas, water, and other pipes and tubes by weldiuer and linishing the same at'ter being|` lient on a rotating; mandrel ata single heat, and at one operation, and-fin the coust'ruetion ot' a machine t'or sueh purposes, sulstantially ashereinallerdeseribed and claimed.

.ln a l'rame consisting; ol` end pieees u u and top and bottom plates u of are arranged the operative parts ol' the, machine. At or near one end ot'the top plate u isa pair otguides, b b, which earry by tongues and grooves al pair ot' sliding dic-heads or die-holders, l: c, with dies (l d set in their inner adjacent ends, the inner or working; iaees ol sue-h dies beine; such as are adapted lo weld, t'orm, and linish the socluzeblank and socket on which they operate. lThe die-holders e e are caused to move to and l'rom the, socket-blank or socket by means ol' a pair ot' vibrating or oscillatoryY arms, e e, which extend from the shal'ts ff' into suitablel sockets or recesses of the die holders. like pair ot' vibrator-y or oscillatory arms, y y, also extend from the shat'tsj f, in such manner as to come in contact with and be actuated by a double eccentric or cani, la, which is attached on a shaft, 1I. The sha-tts f f and v'i have their bearings in the end parts a ay of the frame, and the shaft is preferably extended at one or both ends outside thet'rame, for greater convenience in applying the driving.;` power thereto. The shaft i also carries a sliding hub, l, titted thereon by a groove and aI feather, m, or other like means. The end ot' this hub next-the double cam h is made in the form ot` a clutch, as at l', and the counterpart of such clutch is made on the adjacent end ot' the cam h, as at h. On the opposite end of the hub l is an eccentric or cam, z, the construction, however, being such that the clutch and eccentric will not both be practically in operation at the same time. The hub l is shifted in position either way by` the common form ot' shitting-lever n engaging the hub by a groove, and havin g its fulcrum at n. The arms gg arc held as against the action ot' the cam h., and vcaused to make their ret-urn stroke by a. spring, g. drel, p, extends through the top plate a', and through a plate, b', which t'orms a rest and support t'or the. mandrel, and so as to come in proper position relative to the dies for t-hc proper action ot' such dies on the sockethlank when thc latter is placed on the mandrel. This mandrel is al'lixed to a spindle, Vp', by a nut, n, and this spindle is connected with a circular ratchet, r, and both resting upon a vertically-moving post, s, but ill such manner that while they will move up and down with the post s they may also receive a. rotary inotion independent ot' the post. The post s is properly guided in its vertical motion by guides s in the lower plate. a". Au upward motion is imparted to it by a. treadlc, t, and a downl ward motion by the eccentric z engaging a shoulder or liange, s2, thereon, and a pawl, u, attached to one ot' the oscillatory arms c, furnishes means for giving to the mandrel p thc desired rotary motion.

The dies d are made concave on their work-v ing-faces, as shown particularly in Fic. 7, so as to be adapted to the work to be done, and

A cylindrical manare also recessed, as at d', so as to have on each a tia-ngo, d", at the top and bottom of its working-face. The vertical height of the recess d* is equal, or about equal, to the length of the socket, q, to be lnade, and the depth of each such recess is equal, or about equal, to the thickness of the material which forms the tinished socket. The mandrel p has one or more projections, o, of about the same height 'as the lower ange dl, and on which, while being welded and finished, the socket rests. The dies d are removable, as also the mandrel p, so as to substitute other 'dies and a correspondingly-"shaped mandrel for `the manufacture lof sockets of other sizes. The plate b is removable for like purposes.

In practical operation, the socketblank, previously bent to cylindrical form, is slipped over the mandrel p. The dies are then caused to operate on it by a rapid succession of blows, imparted to it successively on all sides, so as to weld', compress, and iinish it ready for tapping at one heatand one operation. The diameter and the cylindrical form of its eye is imparted by the mandrel o n which it is coinpressed, and the welding and exterior shaping and finishing is done by the action ofthe dies.

` The socket is rotated after each stroke ot' the dies by the rotation ofthe mandrel after each stroke of the dies, which latter is secured by the pawl u and ratchet r. In this way the sockets are. made perfectly true and uniform A rotating the lnan'drcl p and for operating the dies.

The use to which the sockets are pnt 'after being made is not material so far as relates to blanks and cmiverting said blanks into sockets, fmished internally and externally, on a rotating .mandrel and by suitable dies, at one operation and one heat, substantially as set forth.

2. The combination of an intermittently-rotating mandrel, for supporting internally the walls of the socket, and reciprocating dies, bounded above and below by-transverse walls, to preventlongitudinal extension of the socket, substantiallyas set forth.

3. The combination ot' reciprocating dies d d, vibratory arms e e, and ratchet and pawl r u, whereby'the mandrel is rotated when the dies ale retracted, and is stationary at the forward stroke of the dies, substantially as set forth.

4. The sliding hub l, carrying an eccentric or cam at one end and a clutch at the other, and suitably arranged to operate the dies in one position and discharge the finished socket in the'other, substantially as set'forth.

5. The combination ot' mandrel p, one or more projections, '11, and recessed and Han ged dies d, substantially asset forth.

GEORGE FITCH. PETER SIIAFER.

Witnesses:

I. L. ELsEssEn, CHA RLEs G. PAGE.

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