US256490A - Stereotype-shaving machine - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

G. E. LLOYD.

STEREOTYPE SHAVING MACHINE.

Patehted Apr. 18,1882.

(No Model.) I 2 Sheets-Sheet 2.

- G. E. LLOYD. &

.STEREOTYPE SHAVING MACHINE. I

No. 256,490: Patented Apr. 18, 1882..

n PETERS. mun-o n wan-m \u:

Y 1 UNITE STATES GEORGE E. LLOYD, OF CHICAGO, ILLINOIS.

PATENT OFFICE.

STERE OTY PE-SHAVING MACHINE SPECIFICATION forming part of Letters Patent No. 256,490, dated April 18, 1882.

Application filcd December 6, 1881.

To all whom it may concern Be it known that I, GEORGE E. LLOYD, of

Chicago, in the county ofCook and State ofIllistereotype-shaving machines, which shave the blocks upon which stereotype-plates are mounted and said plates to a requisite thickness.

These machines have heretofore been operated solely by the spoke-lever, which is cumbersome to manipulate, requiring the operator to attend to the proper adjustment of the plate on the bed and exert his utmost strength at the same time, which naturally gives rise to a great deal of inaccurate work, andespecially is this the case when inexperienced workmen manipulate the machine. My invention obviates this defeet by a simple arrangement of mechanical devices, by means of which steam-power can be utilized and transmitted at the will of the operator to run' the machine, allowing the free use of the hands and more .attention to be given to the proper adjustment of the plate on the bed.

In the drawings, Figure 1 is an end view of my invention. Fig. 2 is a side elevation of the same with the spoke-lever removed. Fig. 3 is a vertical longitudinal section on the line a: w in Fig. 1, and Figs. 4 and 5 are detail views of the clutch.

A represents the ordinary stereotype-shaving machine, consisting of a stationary bedplate the same width as and about one-half the length of the machine, with a ledge running transversely across the outer end to hold the block or plate in position while the knife movesover it, shaving it to the required thickness. The knife is fastened to a transverse (No model.)

from the sides of the table or frame, the upright arms of which form a bearing for the drive-shaft B. The carrier and knife are operated by means of two racks, one on either side of the machine, extending from said .carrier parallel to each other, and moving longitudinally under and 'meshing with corresponding pinions on the drive-shaft B, On one end of said shaft B is placed a spoke-lever located far enough from the machine to revolve freely, and constituting in the old invention the only means for operating the same. When usedin connection with my improvement the necessity for its use is limited to the return movement of the carrier and knife.

Thus far I have confined myself to the construction of the old machine. v

To apply my improvement for transmitting steam-power, I place on the shaft B, immediately next to and between the spoke-lever and the L-shaped bracket, a gear-wheel, b, which meshes with the pinion c, loose on the end of the shaft 0, said pinion being prevented from slipping off said shaft by the head 0. The shaft C is journaled in the brackets'c 0 extending from the ends and near the sides of the table or frame. On the end of the shaft opposite to that on which the pinion is placed is a pulley, C, driven through the medium of ordinary shaftin g by steam-power.. Placed within and next to the brackets c c on said shaft are collars, so placed to prevent any serrations in its outer face to engage with cor-- responding serrations in the contiguous face of the counterpart box at, which projects from the inner side of and is of a piece with the pinion c. The clutch Dis fixed on the shaft C by a spline, (1 secured longitudinally in and projecting slightly from said shaft, and entering a corresponding groove in the clutch, thus rotating yet. allowing it to engage with its counterpart or transmit its rotary motion to the pinion.

The fork e, the arms of which embrace and enter the circumferential groove in the clutch D, is secured on the end of the reciprocating rod E, which runs transversely across one end of the machine immediately under the shaft O,being journaled in hangers extending downward from the brackets c 0 Midway on the rod E is a head, perinanently secured thereto, and provided on its inner side with two projections, between which is movably situated the end of the arm gon the end of the rock-shaft i, said rock-shaft running centrally the length of the machine under the bed-plate, and having its bearings in the crossbeams of the frame or table. On the reciprocatingrod E, between the heady and the bearingc, is astrongexpansion-spring,g arranged to disengage the clutch and return it to its first position when the pressure of the foot is removed from the treadle, as will be hereinafter explained. Near the other end of the rock-shaft i is an arm, k, perforated in its extremity to receive the hook of the counecting-rod m, which, passing downward through the frame, is operated by a foot-treadle, G.

To operate my machine, the spoke-lever is used to move the carrier and knife back away from the ledge on the bedplate then the block or plate being adjusted properly, the foot is pressed on the treadle, thus connecting the clutch with its counterpart and transmitting the steam-power to operate the machine while it performs the cutting movement.

What I claim as new, and desire to secure by Letters Patent, is-

1. The combination, in a stereotype-shaving machine, of the foot-treadle G, connecting-rod m, and rockshaft 2' with the reciprocating rod E, fork c, and clutch D, substantially as and for the purpose described.

2. The combination, in a stereotype-shaving machine, with the expansion-spring g, of the reciprocating rod E and clutch D, for the purpose hercinbefore specified.

3. A device for transmitting steam-power to perform the cutting movement of a stereotypeshaving machine, consisting of a pulley on the end of the drive-shaft, near the other end of which is a clutch engaging with its counterpart box on the contiguous side of apinion which transmits its intermittent motion to a gear-wheel on the end of the handlever shaft, said clutch being forced into gear through the medium of a foot-lever, and being returned to its original position by the expansion-spring on the reciprocating shaft, substantially as and for the purpose hereinbelore described and set forth.

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

GEO, E. LLOYD.

Witnesses:

JAMES H. Conn, FRANK D. THOMASON.

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