US921126A - Engraving-block-jaw attachment. - Google Patents

Description

AQ L. LEfx'IARl.1 ENGBAVING BLOUK JAW ATTACHMENT.

APPLIGATION FILED Auejzo. 190s.

Patented May 11, 1909.,

WITNESSES l 's m www:

ATTORNEY n srArus PArEN rrr@ ARLINGTON L LEA'rAR'r, Los ANGEL-Es, CALIFORNIA.

` specification of Letters Patent? Patented May 11, 1909.

Application led. August 29, 1908. Serial No. 450,880.

proved jaws or clamps which are readily at-g tachable to or detachable from an engraving block, and the object thereof is to provide jaws or clamps that when attached to an engraving block will rigidly hold the article to be engraved while being worked upon. [I accomplish this object by means of the improved detachable jaws or clamps described' herein and illustrated in `theaccompanying drawings in which; i

Figure 1 is a perspective view of my improved clamping jaws in place on an ordinary engravers block with a spoon in place in the .j aws. Fig. 2 is a longitudinal vertical' section of one of the jaws. Fig?) is a central vertical section of the parts shown in Fig. l showing in cross sectionthe clamping jaws. Fig. 4 is a side elevation of one side of the clam ing jaws. Fig. 5 is a top plan of one of the c amping jaws. Fig. 6 is a side elevation of the opposite side of the clamping jaw to that shown in Fig. 4. Fig. 7 is an end elevation of one of the clamping jaws. l? ig. 8 is an end elevation of the other end of one Vof the clamping jaws. j

There are two jaws of the same construction, except that one is right and the other left and therefore only one jaw will be described. j

The drawings, except Fig. l, are made upon the scale and from a pair of full sized practical working jaws, and the lines, grooves, arcs, lips or overhanging edges and surfaces, and contours shown in the drawing may be taken as guides in the construction of other jaws for use in an engravers block.

In the bottom of the jaw is a longitudinal central groove E whose vertical height is a little` over half the height of the'jaw. ln this groove is mounted a U-shaped guide and retaining wire B of spring wire which is secured to the body of the clamp-by having its ends passed into sockets C and C as best shown in Fig. 2. On this guide wire is mounted two attaching pegs A which are adapted to pass into sockets Q in the head of Los Y Q of the engravers block of any approved construction. These pegs have transverse holes Z into Vwhich guide wire B is received so that kthe pegs can be moved toward or away from each other, and are placed on the vguide wire before one end of the same is turned.

VIn the center vand near the bottom of each jaw is a transverse hole N through which passes a guide rodD which keeps the two jaws in alinement as they are moved toward or away from each other so that the respec- 1 tive arcs, curves and depressions of the vertical faces of the jaws may be kept in accurate register or apposition. This guide rod has its ends slightly beveled or tapered and passes beneath guide wire B, slightly springing the same upwardly as it is passed thereunder so asto cause a slight friction to prevent the jaws moving too easily on the rod. Near each end of guide rod D is a small groove K into which guide wire B will spring to prevent the jaws from coming oif guide rod D unless extra force is applied thereto. This construction prevents one of the jaws slipping off thel guide rod D before the guide wire B of the other 'jaw has reached the groove in the other end o f the guide rod, and

also keeps the parts assembled when the jaws are notin place on the engraving block.

Referring to Fig.j4, shows the outer circle of a groove whose central line H-H is the arc of 'a circle, the diameter of which is three quartersv of an inch, and Y-Y is Vthe inner line of said groove. It will be oby served that this groove widens and deepens toward the upper part of' the clamp, and the lpurpose thereof is to hold signet rings and other like rings when being engraved, as the edges of the ring whether it be large or small will fit sufficiently close to the center line of the groove that when the jaws are brought togetherby the movement of the head block the ring will be securely held therein. This side of the jaw which for convenience of de'- scription herein we will call the first side Of the j aw is the right hand side of the j awshown in Fig. 5 and a plan of said side is shown in Fig. 4.

Cutting across the groove whose central line is H-H is a curved groove whose central line is I. This groove is of uniform depth and width and preferably V-shaped in cross section and its upper line is indicated by the letter F, and its lower line by the letter G. Into this groove is received oval bracelets and napkin rings. The center line T is the arc of a circle whose diameter is two and thirteen sixteenths inches. Cutting across the outer ends of the groove whose central line is l is a longitudinal circular groove, whose upper edge is marked by the letter J and whose lower edge is marked by the letter G. This groove is adapted for holding fountain pens, pencils and penholders. Tn Fig. Ll this groove has the reference letter JV and is the arc of a circle whose diameter is eleven thirtyseconds of an inch. ln the top surface on this side of the jaw is a depression about one thirty-second of an inch in depth. The central inner portion of this depression is under cut at the bottom to form a projecting lip which is the arc of a circle between the points marked L-L, Fig. 5, of a circle whose diameter is one and one fourth inches. At each end the contour of the lip between the points marked L-M is also circular, but the diameter of the circle is two inches. The outer surface of the depression terminates on a circular line which is marked J/ The line J is the arc of a circle whose diameter is one and seven eighths inches. Below the line J the surface slopes inwardly and downwardly and then outwardly on a curve and terminates just above the curve whose inner line is marked by the letter l thereby forniing a curved surface with an overhanging lip designed for holding the bowls of spoons as illustrated in Fig. 1. The depressed upper surface between the points marked L-L with its overhanging lip is designed to hold small watch caps while the surface having the curved overhanging lip between the points L and M is designed for holding larger watch caps.

On the other side of the jaw, that is the left hand side of the jaw shown in Fig. 5, and a plan of which side is shown in Fig. 6, in the top surface is a larger groove marked with the letter d which is the are of a circle whose diameter is one and one half inches. Below, the surface slopes inwardly and downwardly to form a projecting lip for a short distance and then slopes downwardly and forwardly and terminates in an elliptical line as best shown by the line marked G in Fig. 6. This surface is designed to hold watch cases and like structures. As shown in the drawings this curve occupies the larger part of the upper surface of this side of the jaw, but at one end is a depression whose upper surface is a curve marked R which is the are of a circle three eighths of an inch in diameter. The surface below the curve R slopes downwardly and inwardly for a very short distance and thence slopes outwardly and downwardly, thereby forming a depression for holding collar buttons and like articles. Running longitudinally and cutting across the edges of the curved surfaces whose upper surfaces are marked by d and R is a tl-shaped groove whose upper edge is marked by the letter a, its central line by i l, and lower line by c, thereby forming a channel in which signet stick pins and bar pins can be held. ln that end and below the depression whose upper curved surface is marked is a vertical depression whose outer edge is circular and is marked T from which, the surface slopes inwardly to the line marked vU a distance of about three thirtyseconds of an inch, and then slopes downwardly and outwardly and terminates on the curved line marked S which forms a vertical depression for holding band and oval rings. At the other end is a narrower vertical depression whose outer surface or edge is marked q and is the are of a circle whose diameter is three quarters of an inch. The surface then slopes inwardly at an angle ol about forty-live degrees to a depth of about a sixteenth of an inch and then slopes in a rcverse direction the same distance to the back wall of the depression. This end depression holds Tiffany and flat narrow rings.

By this combination of providing two jaws whose vertical and top surfaces are provided with depressions having` curved surfaces provided with overhung lips and also straight grooves `with curved walls, T am able. to provide a tool for attachment to an engravers block which will retain and `firmly hold any species of jewelry that is required to be engraved which will pass within the spread of the jaws, thereby saving han dling a large number of tools and attachments which have been heretofore used in connection with engravers blocks, and also to provide a tool for holding certain configurations of jewelry which heretofore could not be conveniently held by any attachment upon an engravers block.

Having described my invention what lV claim is:

l. An attachment for engravers blocks, comprising a pair of jaws provided with adjustable attaching pegs in the bottom thereof and having one or more jewelry holding depressions or recesses.

2. [in attachment for engravers blocks, comprising a nair of jaws provided with adjustable attaching pegs in the bottom thereof and having the vertical walls provided with depressions or recesses substantially as dcscribed herein, and having transverse central holes near the bottom thereof; and a guide bar extending through said transverse holes.

3. An attachment for engravers blocks, comprising a pair of jaws each having depressions or recesses substantially as described and a longitudinal groove in the bottom. thereof extending to above the center of the body, and having sockets in said body opening into the grooves near the ends thereof and having central transverse holes near the bottom thereof; U-shaped guide wires within said grooves, the ends thereof being lll) l (l l) l Itl received in said sockets; attaching pegs slid- 'j aw; and means to hold said jaws in alineably mounted on said guide Wires; and a ment so that the dilierent depressions or retransverse guide bar in said transverse holes. cesses therein may be held in apposition.

4. An attachment for engravers' blocks, In Witness that I claim the foregoing I 15 comprising a air of jaws provided With adhave hereunto subscribed my name this 24th ljustable attaching pegs in the bottom thereday of August, 1908.

of, said jaws having in the vertical faces thereof depressions or recesses adapted to ARLINGTON L' LEATART' hold articles substantially as described here- Witnesses: in, said depressions or recesses being one G. E. HARPHAM,

S. B. AUSTIN.

half in one jaW and the other halt1 in the other`

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