US1453406A - Workholder - Google Patents

Description

May 1, 1923. 1,453,406

'r. E. PUVRVIS WORKHOLDER Filed May 10 1921 2 Sheets-Sheet 1 ZZZ f Para L9.

Hill

May 1, 1923.

T; E. PURVIS WORKHOLDER A 1 I J m g m Patented May 1, 1923.

THOMAS E. PUB/VIE, OF TEKAMAH, NEBRASKA.

WOBKHQLDER.

Application flied ls'iay 10,

' Tekamah. in the county of Burt and State sponding parts of Nebraska. have invented certain new and useful Improvements in a Workholder, of which the following is a specification.

The invention relates to improvements in work holders, and more particularly to a type of the same adapted for supporting heavy articles, such as castings and the like, in position for working operations thereon, and for their transportation from one point to another for such operation.

The primary object of the invention is to provide for a work holder of the class mentioned, and one more particularly adapted for the supporting and transporting of engine cylinder castings thereon.

A further object of the invention is to provide for a device of the type specified and one involving means whereby the engine casting iseasily and readily secured in position and may be turned from one position to another for the necessary working operations on the different parts thereof.

Another object of the invention is to provide for a holder of the character described, and one having. simple and easily operated fastenings adapted forengagementwith certain of the usual bolt-or screw openings of engine castings, whereby the latter are securely held in position.

With the foregoing and other objects in view, the invention resides in the certain new and useful construction and arrangement of parts as will be hereinafter more fully described. set forth in the appended claims. and illustrated in the accompanying drawings, in which Fig. 1 is a side elevation,

Fig. 2 is a rear elevation,

Fig. 3 is a front elevation,

Fig. l is a detail, partly in section, of one, of the work fastening devices,

Fig. 5 is a detail, partly in section of another one of the work fastening devices. and,

Fig.6 is a fragmentary detail of one of the frame members or standards showing the pulling or pushinglever pivoted thereon and by means of which the work supported thereon moves from one point to another.

Referring to thedrawings, wherein similar characters of reference designate correin the several views thereof, a main frame isShOWIl asconsisting of a pair 1921.. Serial irojieassa of spaced side bars 10, preferably of angle iron formation. connected together at one end by means of an axle 11 and at the other end by means of a transverse bar 12 and an intermediate part by a transverse bar 13, both of which bars 12 and 13 are alsoof angle iron formation. Mounted on the oppositely projecting ends of the axle 11 are suitable wheels 1 1, while the other, or forward. ends of the frame are supported on leg pieces 15, which are of short lengths of angle iron bolted at the outer faces of the side bars 10, and interbraced therewith by means of braces, 16, and with the transverse bars by means of braces 17.

Rising medially of thetransverse bars 12 and 13 are a pair of standards 18 and 19, respectively, which are held in rigid spaced relation by means of crossed braced elements 20, which are independently braced at opposite sides to the transverse bars by means of diagonally extending brace elements 21 and 22, respectively. Pivotally supported on the upper free ends of the standards 18 and 19, is a substantially rectangular work-supporting frame or table which consists 'of end bars 23 and oppositely disposed side bars 24; and-25, the end bars 23 being pivoted as at 26, to the standards at points intermediate their opposite ends, or on the longitudinal center of the frame of which they are a part. i The work table is normally held in position on standards 18 and 19, by means of a brace rod or arm 27, which is permanently pivoted, asv

at 28, to either of the standards, or as shown to the standard 19, and detachably engages a fastening device 28, Fig. 1.

For securing an engine casting in ost tion on the table, the side bar 24 is-provided at its opposite ends with a bracket 29,

formed of a short length of U-iron, bridging the channel of which are looking or fasten ingpins 30. The opposite ends of the pins '30 project to eitherside ofthe outer'side, faces of the bracket 29, and the inner ends.

of the same are formed to provide finger pieces or knobs 31, by means ofwhich the same are to be manipulated agalnst thetension of the coiled springs 32, one endof.

the coiled springs 32 being secured to the inner wall of the to the pins 30 at a point inward of the mouth thereof. These pins 30 are adapted to be swung into engagement wit h the bolt p n of he i sr lflea l qnr bracket 29 and the other the crank case of an engine casting, substantially as shown in Fig. 4. Secured on the upper face of the side bars 25 of the Work table, is a bracket 33 of strap iron, the opposite end of which is bolted to the bar 25 and has a medial portion spaced above the bar 25 to admit of the insertion of the crank 35 into position and for threading the same home in the article to be secured by the same. This screw fastening is intended to have its shank portion 35 of a suitable diameter so as to engage in the threaded openings formed in the wall of an engine casting, which openings are generally used for the reception of bolt fastenings for manually retaining said casting,

and the like.

In the use of the work holder, or support, thus provided, the engine casting a is hoisted into position on the work table, when the latter is tilted to vertical position, and the spring tension pins 30 are sprung into the bolt openings in the flange b of the integral portion of the crank casingof the engine 0, after which, with the upper part d of the casting a in contact with the outer face of the bracket 33, the shank 35 of the screw fastening, is inserted through the opening 34 of the bracket and is threaded into engagement with a bolt opening 6 thereof by the proper manipulation of the crank arm 36.

Work may now be done on the casting in any of three operative positions of the work table, as in either of its two verticalposit-ions,one reverse to the other, as by tilting thetable from one side of the standards 18 and 19 to the other side thereof, or in its horizontal position, as when the table is so held by means of the brace 27, having its upper end secured to the end of the table by the fastening 28.

For transporting the work holder from one point to another, a pulling or pushing" arm or tongue 37 is provided, and the same is bifurcated at one end to provide a pivotconnecting portion 38, and an angularly bent portion 39, the portion 33 being pivoted, as at 450, to the outer side face of the standard 18, and having the bent portion 39 arranged to contact the front face of the latter, when the arm 37 is raised in operative position.

From the foregoing, it will be readily obvious that I have provided for an extremely simple and comparatively inexpensive construction of Work holder, and one that is readilyportable from place to place, either with or without the engine casting being positioned on the table thereof, and also that the tilting arrangement of the work table admits of the turning of the casting to all desired and required positions, for the Working operations thereon.

Having thus fully described the invention, what is claimed, is

l. A. Work holder of the class described comprising a base, standards rising; from said base in spaced relation one with respect to the other, a work table pivoted on its longitudinal center to the free ends of said standards whereby the same may be tilted to vertical positions to either side of the latter said table at one side of its top provided with a pair of apertured U-shaped supports and at the other side of its top with an apertured bracket, a brace member pivoted at one end to one of said standards, means detachably securing said brace member to said work table for holding the same in its horizontal position, tensioned fastenings extending through the apertures of said supports for engagement in certain bolt openings of an engine casting, and a detachable fastening means extending through the aperture of said bracket and adapted for engagement with any one of certain other bolt openings of the engine casting.

2. A work holder of the class described comprising base, standards rising from said base in spaced relation one with respect to the other, a work table pivoted on its longitudinal center to the free ends of said standards whereby the same may be tilted to vertical positions to either side of the latter, a brace member pivoted at one end to said standards, means detachably securing said brace member to said Work table for 'holdingthe same in its horizontal position,

spring actuated pins spaced apart on one side of said work table for engagement in certain boltopenings on an engine casting, a detachable screw threaded fastening means engageable with any one of certain bolt openings of the engine casting, U-shaped supports for said pin, and a supporting bracket through which extends said fastenmg.

3. it work holder for the purpose set forth comprising a pivoted work table, detachable means for maintaining said table in a horizontal. position, a pair of spaced U-shaped apertured elements secured to one side of said table, spring controlled work holding pins slidably mounted in said element and connected therewith, an upwardly extending bracket secured to the other side of the table and provided with an aperture and a threaded work fastener adapted to extend through the opening in the bracket.

41. A work holder for the purpose set forth. comprising a pivoted rectangular work table,

detachable means for maintaining said table in horizontal position, spring controlled work holding elements connected. with the table and disposed at right angles with re spect to the longitudinal center of the table, and a threaded Work fastener disposed at right angles with respect to said elements.

In testimony whereof, I afiix my signature hereto. I

' THQIWAS' E.

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