US100368A - Administrator - Google Patents

Description

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RICHARD VOSE, OI" PHILADELPHIA, PENNSYLY ANIA, ADMINISTRATOR OF WILLIAM. BULLOGK,` DECEASED.

Letters Patent No. 100,368, dated March 1, 1870; antedated February 28, v12870.

IMPROVED MACHINE POR PLANIG- AND SQUARING- THE ENDS OF SEG-MENTAL STEREOTYPE PLATES.

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The Schedule referred to in these Letters Patent and making part of the same To all whom it may concern Be it known thaty WILLIAM BULLOCK, late of Philadelphia, in the county of Philadelphia, in the State of Pennsylvania, did invent anew and useful Machine for Shaving and Sqnaring Circular' Stereotype Plates; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had tothe annexed drawings inaking'a part of this specification, in which- Figure 1 is a longitudinal sectional elevation.

Figure 2 is an end view, and

Figure 3 is a panoramic plane of the machine.

This machine and improvement is intended to be used in preparing' circular stereotype plates for the press, it being essential that stereotype plates should be of uniform and even thickness, so as to prevent the necessity of under or overlaying, and the edges should be square with the axis 'and periphery of the cylinder,

to accomplish which with ldispatch is the object of this machine.

In the drawings hereto annexed- A is the iraine of the machine, lwith guides at the sides, iu-which the clalnp or hed B holding the plate C can be drawn backward and forwards hy means of the screw E and crank F, for the purpose of passing the plate under the revolving knives or cutters G, in order to planethe iunerorconcave surface of-the plate and square the ends.

H is the shaft driven by a belt on the pulley I, on the opposite end ot' which is secured a circular disk, J, to which is attached the adjustable cutters G G, bolted on to the face of the disk by screws L L', enabling the operator to set the knives or cut-ters to the proper point.

B is the sliding bed, which may he moved backward and forward under the revolving cutters G G and between the guides M IVI, iig. 2, on the bed-plate A, by means of the screw E and crank F.

K K are clamps on the sides of the sliding bed B, regulated by two screws, but for some purposes one or more screws may be preferable for the purpose of holding and forcing the plate into a true circle, the shape required for the press.

lN is a spring, forcing thedog O up through the stationary bed-plate orframe A, for the purpose of checking the movable bed-plate B at the proper point in trimming the ends.

P is a check, to hold the dog from going 'through the under plate A whilst the inner or concave surface of the plate is being shaved.

Like letters represent the saine Aparts in the different drawings. When the stereotype plate is taken from the mould and the sides are properly trimmed, it is placed in the bed B, which should be previously prepared for it by loosening the clamps and screw or screws on one side and placing a sheet of card paper in the bed to lie hetween the bed and the'type surface of the plate. The clamp-screw or screws are then tightened for the twofold purpose of holding the plate and pressing it into the proper shape. Then the back of the plate should be evenly pounded with a mallet prepared for the purpose, so as to force the type-surface into even cont-act with the card paper, thereby making the type-surface even and uniform. The trinnning knife or knives are then inserted and made to revolve. drawn up gradually to the revolving knives, by which it is trimmed and squared until checked by the dog. The spring N is then pressed down, the bed moved to the other end, which is then treated in the saine manner. Another knife or knives are then inserted in the disk, the dog sprung back and held by the check,

P, and the bed B drawn slowly under the revolving knives by means of the screw E and crank F, thereby shaving the back of the plate or concave surface, and forcingthe convex surface into a true circle, giving the convex or type surface a perfectly even and level surface, and making the plate perfectly even in tliickf ness.

What I claim as the invention of the said WILLIAM BULLOCK, and desire to secure by Letters Patent, 1s-

The movable circular bed, in'coinbination with the revolving knives or cutters, all constructed and arranged as and for the purposes described. f

RICHD. VOSE,

Administ'llator.

Witnesses A. L. BUTLER, Jas. GILLET.

The bed is then

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