US333529A - Machine for shaving stereotype-plates - Google Patents

Description

G. E. LLOYD.

MACHINE FOR sHAVINe STBRBOTYPB PLATES.

No. 338,529. Patented Jan. 5, 1886.,

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(No Model.)

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GEORGE E. LLOYD, OF CHICAGO, ILLINOIS.

MACHINE FOR SH-AVING STEREOTYPE-PLATES.

SPECIFICATION forming part of Letters Patent No. 333,529, dated January 5, 1886.

Application filed May 12, 1885. Serial No. 165,169. (No mo'lel.)

'o @ZZ whom it may concern.-

Be it known that l, GEORGE E. LLOYD, of Chicago, in the county of Cook and State of Illinois7 have invented certain new and useful Improvements in Stereotype Shaving Machines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enablev others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of my invention is to provide certain improvements and attachments to stereotype-shaving machines,which especially adapt it to the shaving of stereotype blocks and plates having tenons thereon and mortises therein, respectively.

In the drawings, Figure 1 is a side elevation of the front end of a stereotype-shaving niachine. Fig. 2 is a vertical transverse section taken on line x x, Fig. l. Figs. 3 and 4 are plan views 0f a couple of attachments, and Fig. 5 is an end view of a stereotype-plate which my machine is adapted to shave.

Reference being had to the drawings, A represents the knife-carrying head, which is advanced to or withdrawn from the work by the usual mechanism-to wit, racks extending to the rear horizontally and parallel to each other from either end of said head, and pinions fast on the drive-shaft, which passes transversely over the bed of the machine. This construction, briefly stated, is the same that has been in use for many years past, and my machine does not ditfer from it materially, except that in the cutting-edge of the knife B, preferably on the left-hand side of the machine, there is a rectangular recess, b, the use of which will hereinafter be explained, and the friction-roller C, with means for operating the same. This roller C is journaled in the blocks c c, which have extending vertically from them a cylindrical spindle, d, which is stepped to a smaller diameter a short distance above said bearing-blocks, so as to form shoulders. These spindles move in guides D, the lower opening of the bore of which corresponds in diameter to the greatest diameter of the spindle. This diameter of the spindle is preserved to near the top of the guide D,where it is decreased to correspond to the lesser diameter of the spindle which projects out from the top, and has pivoted to its upper end the cam-lugs of the handle E. The distance from the pivotalpoint of these cam-lugs to their under surfaces when in a vertical position is greater than the distance from said pivotal center to the sides ofsaid cam-lugs, conse-- quently when the handles (from the lower end of which the cam-lugs extend) are in a vertical position the roller C will be lifted from the work, and when said handles are oscillated t0 a horizontal position the roller will bear down upon the work.

Between the shoulders formed by decreasing the diameters of the spindles d and the upper terminus of the bore of the guide, I surround said spindle with an expansion-spring, e. This spring e, when the friction-roller is pressed down onto the work, holds the roller down, and yet permits it to give when any irregular surface passes under it. The guides D have laterallyprojecting lugs g, by means of which theyare secured to the end frames of the knifecarrier'A in front of said knife.

As before stated, my invention is particularly adapted to shaving stereotype bases and plates, the design of which is sufficiently illustrated in Figs. 5 and 2, in which latter figure the base is shown under the knife.

In order to shave either the base or plate,

it is necessary that they be elevated a distance' corresponding to the thickness of the base, if it is the plate being shaved, and a distance corresponding to the thickness of the plate, if it is the base being shaved. This I accomplish bythe plates G and Hfor the stereotypebase, as shown in Figs. l2, 3, and 4, and one similar to G, only thicker, for the plate. The plate G is of a thickness corresponding to the stereotype-plate adapted to fit the base mounted thereon, has side ledges to prevent said base from falling off laterally, and is placed longitudinally on the bed-plate of the machine, that the tenon of the stereotype-base mounted thereon will enter the recess bin the knife. The plate H corresponds in thickness to G,

has side ledges similar thereto to prevent the base from falling off laterally, and has a central longitudinal mortise the obverse of the tenen of the base which it is adapted to receive. The plate G is held in its longitudinal roo position by means of dowel-pins entering suitable holes in the bed-plate-,

The advantage of the friction-roller is that it holds the metal down while being shaved, which otherwise might be lifted as the knife advances, and thus shaved too much.

1. The combination, in a stereotype-shaving machine, with the carrier A and knife B, of the plates G and H.

2. The combination, in a stereotype shaving machine, with the carrier A, of knife B, having a recess, vb, in its cutting-edge.

3. The combination, in a stereotype-shaving machine,with the carrier A and knife B, having a rectangular recess, b, in its cutting-edge, of plate G.

4. The combination, in a stereotype-shaving machine,\vith the carrier and the knife, of the plate H, having longitudinal side ledges and a. longitudinal central mortise.

5. The combination, in a stereotypeshaving -machine, with carrier-head A and knife B,

having recess b therein, of the plates G and H, said plate G corresponding in thick ness to stereotype plate or base, and said plate H having a longitudinal central mortise and corresponding in thickness to a stereotypeplate.

6. The combination, ina stereotype-shaving machine, with the carrier-head A and knife B, of the friction-roller arranged parallel with,on about the same horizontal plane as and in front of, the cuttngedge of said knife.

7. The combination, in a stereotypeshaving machine, of a frictiouroller, blocks in which the same isjournaled, spindles projecting upward from said blocks, camhandles,and guides in which said spindles move.

8. The combination, with a stereotype-shaving machine, of a friction-roller, C, blocks c, spindles d, handles E, guides D, and spring e, as hereinbefore described.

In testimony that I claim the foregoing as my own I .hereunto aiix my signature in presence of two witnesses.

GEORGE E. LLOYD.

Witnesses:

JAMES H. OOYNE, FRANK D. THoMAsoN.

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