USRE6325E - Improvement in stereotype-plate holders - Google Patents

Description

, ice, which involved a considerable expense jection was in a large measure overcome by UNITED STATES PATENT OFFICE.,

ARIEL CASE, or NEW HAVEN, CONNECTICUT, AssIcS-CE' To n. I-IoE si Co., CE NEW YORK CITY.

iMPRovEMEN-r m sTEREoTvPE-PLATE HOLDERS..

Specification forming part of Letters Patent No. 54,110, dated April 24, 186B; reissue No. 6,325, dated n March 9, 1875; application filed February 25, 1875. l

adjustment ofthe quadrats, by inserting leads and scaleboardstrips between them, in order that when secured tightly together in thechase,

under 4the pressure of the locking-Wedges, the

To all whom it may concern:

Be it known that ARIEL CASE, of New Haven, Connecticut, did invent certain Iniprovements in Stereotype-Plate Holders, of which the followingr is a speciiication:

In the accompanying drawings', in which like letters refer to like parts, lFigure 1 is a top view of the block with a plate secured thereto, and the said parts securely locked in a chase ready for use. Fig. 2 is a sectional view of the same on line .r of Fig. 1; and Fig. 3 is a detached end view of the lock.

The invention relates to the construction of the blocks upon which stereotype-plates are supported for printing therefrom, and to the means of securing stereotype-plates upon their supporting-beds. l Y

Heretofore stereotypes-"Insite u supportin gblocks have been made of a size nearly equal to that of the plate to be supported, which blocks are supplied with a locking device, forming an integral part thereof, and extending be- 7ond its edges on opposite sides, being provided atone end with a jaw,'to engage with the plate, and at the other end with a means for actuating said jaw, so asv to canse it to clamp the plate 'between itself and a txedjaw or lip at the opposite side of the block. This construction necessitated a large number of diierent sizes of blocks in every printing-ofwithout their being bent, and the form beso held in the chaseas to be capable of being lifted from the imposing-'table to the press. Discarding such a device, therefore, as impracticable, its useful feature has been preserved by forming the block from quadrats, setting them up together, with one or` more pairs of jaw-carrying pieces, one of each pair of such pie;- es having its jaw independently adjusted in its supporting ba'se,whereby the'plate-supporting block may be made up without regard tothat nice adj ustlnent renderednecessary when rigid riation in the relative sizes of the block and plate being compensated for by the adjustable jaw. And when thus made up and locked in a chase, this plate-holder is adapted to Vrelease the plate by a suitable movement ofthe adjustable jaw, so that the plate it holds may be readily removed or exchanged for another of a size approximating to it, without unlocking the chase. This constitutes one feature of the invention. Another feature consists in providing the shank ofthe adjustable jaw with a screw-threaded 'opening or nut, whereby it is adapted to travel upon the screw-thread of its actuating screw-bolt, which may thus be seated in proper bearings in the supportingblock, so as to simply rotate therein.

The construction and operation of these improvements will now be described.

A, block of metal, B, has a vertical mortise in its body, into which the shank of the hook A extends, as seen in Fi/g.r2, and which provides for its lateral movement or play. In suitable both of material and storage-room. This ohsetting up from the metal quadrats a supporting-form equal to the surface area of the plate, and providing, at suitable points along its sides, brass plates, terminating in lips at their upper edges, which plates, when adjust' ed in a vertical position against the form7 of quadrats, so that their -lips overhang the edges of the plate, the whole can be locked l up together in a chase by the wellknown wedging process. .But while this overcomes to some extent the disxatdvantage of having to use separate and arbitrary sized blocks to hold the plates, it was found equally objectionable to'be required to unlock the form whenever it became necessary to remove or change the late; and, moreover, it was necessary to use thc utmost care, and to make nice and exact a screw-bolt, D, is seated, being so confined by a head upon one'end and a collar, E, upon the other, that its longitudinal movement is prevented, while its free rotation is provided for. The threads upon this bolt exactly conform to those in the shank of the hook A, which travels upon them. The collar E is fixed upon the squared end of the bolt D,and is provided upon its periphery with sockets,

jaws or lips would properly grasp the'plate plate-clamping `jaws "are used, 'any'slight ya?" bearings, bored transversely tb rough the block,

into which the end of a suitable tool may be inserted to cause its rotation. When thus rotated, it will cause the hook or jawed arm A to travel,.guided by the mortise C, forward and back upon it, as the case may be. A second or auxiliary j'awed block, F, is placed on one side of the chase, and the block B is placed on the opposite side of the chase, a distance from the former equal to'or wider than the plate to be supported. Between these blocks, and surrounding them, suitable quadrate I are or type height. pon running the jaw A back a suitable distance, the beveled edge of the plate may be placed between it and the jaw j, when 'by rotating the'screw-boltD, the jaw forces the plate against the jaw j', between which latter and th` said movable `)aw A it is firmly clamped, thus locking 1t securely to The c supportingbed, and plate, confined together, may then be carried to and removedfrom the press.

As many sets of these jawed blocks may be used as is demanded by the size of the'plate,

form a supporting-bed of an and they may be placed at the ends as well as at the sides of the plate, if found necessary.

It is obvious that by seatingthe actuating screw-bolt D in fixed bearings, and thus providing for its simple rotation, without longitudinal movement, in reciprocating the fastening-jaw, a short bolt may be not bend to duty.

What is claimed as the invention of ARIEL CASE is'- f 1. A stereotype-block, consisting of a num ber of quadrats, a hooked plate-holdi F, and the plate-holding ng block, carrying an adjustable hook, whereby, when the said furniture is locked in a chase, the stereotypeplate may be detached therefrom, substantially as described,`and for the purpose set forth.

2. The stereotype-plate holding-hook and itsactuatingalut, constructed substantially as described.- f

3. The combination of the platefholdingjaw or hook A, having a screw-threaded opening in its shank, 4with its actuating-screw D seated in bearings in a supporting-block, substantially as described. A

' R. HOE & CO. Witnesses:

CRAs. W. CARPENTER, N. WALTER ANTHONY.

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