US2123131A - Jaw assembly for vises - Google Patents

Description

y 1938- M. ZUGERMAYER 2,123,131

JAW ASSEMBLY FOR VISES Filed Jan. 25, 195'? mun A? M Z uge/"mayer wanna -.III

INVENTOR ATTORN EY Patented July 5, 1938 2,123,131; p g M .lAW ASSEMBLY FOR VISES Melmore Zugermayer, Southampton, Pa.

Application January 25, 1937, Serial No. 122,283

1 Claim.

The invention relates to a bench vise attachment and more especially to a jaw assembly for bench Vises.

The primary object of the invention is the provision of an attachment of this character, wherein a four-jaw assembly can be used in connection with the bench vise so that work can be gripped or clamped at four points thereof to hold the work more firmly and securely and avoiding damage thereto resultant in the clamping of such work in the double jaw vise of the bench type.

Another object of the invention is the provision of an attachment of this character, wherein the same is susceptible of use in a horizontal plane or in a vertical position when associated with a bench vise so that work can be firmly and securely held without liability of the shifting or Wobbling of such work when engaged in the attachment.

A further object of the invention is the provision of an attachment of this character, which in the assembly thereof is a unit in itself and is readily and easily applied to a bench vise for use therewith and in this manner converting the latter from a two-jaw to a four-jaw vise.

A further object of the invention is the provision of an attachment of this character, which is simple in its construction, thoroughly reliable and efiicient in operation, strong, durable, and inexpensive to manufacture.

With these and other objects in view, the invention consists in the features of construction, combination and arrangement of parts as will be hereinafter more fully described, illustrated in the accompanying drawing, which discloses the preferred embodiment of the invention and pointed out in the claims hereunto appended.

In the accompanying drawing:

Figure 1 is a plan view of the attachment constructed in accordance with the invention.

Figure 2 is a sectional view on the line 2--2 of Figure 1 looking in the direction of the arrows and showing the attachment in a vise.

Figure 3 is a sectional view on the line 3--3 of Figure 1 looking in the direction of the arrows.

Figure 4 is a fragmentary sectional view on the line 4--4 of Figure 1 looking in the direction of the arrows.

Similar reference characters indicate corresponding parts throughout the several views in the drawing.

Referring to the drawing in detail, A designates generally a conventional type of bench vise having the fixed and adjustable jaws 5 and B, respectively, and operating opposite each other,

the adjustable jaw 6 being moved toward and away from the fixed jaw by a feed screw I as is usual.

The attachment comprises a bed plate 8 preferably of flat sided formation having the beveled corners 9 while centrally of this plate is a relatively large square shaped opening it while at one side edge of the said plate is an outwardly tapered centrally located extension I I. 7

Above the bed plate 8, are arranged the op posed equilateral triangular shaped jaw sections I2 and I3, respectively, these being in pairs and extended from the flat bottoms I4 of the sections I2 are downwardly extended abutment wings I5, these being bent at right angles from the inner edges of said sections I2 and are passed through the opening II] in the bed plate 8. The wings I5 at opposite ends are carried beyond the opening If! in the bed plate 8 while one of the sections I2 is riveted at I6 or otherwise made fast to the bed plate 8 while the other section is slidable upon said bed plate and to the slidable section I2 is connected at its longitudinal center a coiled retractile spring I! which is also fixed at I8 close to the outer end of the extension II, the spring being designed to separate the sections I2 from each other to the extent of the opening It.

The sections I2 and I3 at the diagonal edges thereof are formed with upturned flanges I9 and the said flanges on the sections I3 at their inner ends meet each other while the flanges I9 on the sections I2 at their inner ends are separated from each other.

The flanges I9 on the sections I2 are formed with guides 20 with which are interfitted the flanges IQ of the sections I3 and such flanges of both sections I2 and I3 constitute a four-jaw assembly for attachment to the vise A.

In the attachment of the four-jaw assembly, the wings I5 are inserted between the jaws 5 of said vise A with the wing on the fixed section I2 contacting with the fixed jaw 5 of said vise while the wing on the slidable section I2 contacts with the adjustable jaw I6 and thus on the turning of the screw I the slidable section I2 and the sections I3 will become adjusted relative to the fixed section I2 for increasing or decreasing the capacity of the four-jaw assembly for the firm securing of Work within said assembly so that the work will be clamped at four points thereof or at four sides or faces of the same.

When the adjustable jaw B of the vise is moved away from the fixed jaw 5, the spring I! by its tension becomes active to have the slidable sections I2 of the assembly separate and thus the an outwardly tapered extension formed on said bed plate, a coiled retractile spring having connection with said extension and one of the sections, guides formed on the outer edge flanges of a pair of the opposed sections and adjustably interfitting the flanges of the remaining opposed sections for efiecting a four-jaw assembly, and downwardly extending abutment wings engaged through the center opening of the bed and for contact with the jaws of the vise when interposed therebetween, one wing being carried by the section having'the. spring attached thereto and the other wing carried by the section opposed thereto.

MELMORE ZUGERMAYER.

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