US677222A - Paper-holding mechanism for printing or like presses. - Google Patents

Description

No. 677,222. Patented June 25, I90l.

' .1. Y. JOHNSTON.

PAPER HOLDING MECHANISM FOR PRINTING 0B LIKE PRESSES.

(Applicatio'n filed Jan. 23, 1900. (No Model.) 3 Shouts-Sheet .l'.

No. 677,222. Patented June 25, IBM. J. Y. JOHNSTON.

PAPER HOLDING MECHANISM FOR PRINTING 0R LIKE PRESSES.

(Application filed Jan. 23, 1900.) (No Model.)

3 Sheets-Sheet 2.

co woroumoq wnsumm'ou n c .1. Y. JOHNSTON. v PAPER HOLDING MECHANISM FOR PRINTING 0R LIKE PRESSES.

Patented June 25, |90L I (Application filed Jan, 23 1900.)

(No Modeh) 3 ShQBfs-Sheet 3.

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NITED STATES PATENT OFFICE.

JOSEPH YARDLEY JOHNSTON, OF LONDON, ENGLAND, ASSIGNOR TO THE JOHNSTON NORTH AMERICAN PATENTS COMPANY, LIMITED, OF SAME PLACE.

PAPER-HOLDING MECHANISM FOR PRINTING OR LIKE PRESSES.

SPECIFICATION forming part of Letters Patent No. 677,222, dated June 25, 1901.

Application filed January 23, 1900. Serial No. 2,452. (No model.)

To all whom it 77mg concern:

Be it known thatLJosnrn YARDLEY J onus- TON, a citizen of the United States of America, residing at the city of London, England, have invented Improvements in Paper-Holding Mechanism for Printing or Like Presses, of which the following is a specification.

This invention has reference to improvements in means for holding paper or other material while being operated upon in printing, embossing, or printing and embossing presses, whereby the paper or other material is prevented from being lifted and carried away by the die. The holding device or lay-over (hereinafter referred to as a lay-over) is automatically operated, so that after the paper or other material (hereinafter referred to as paper to receive the impression is laid on the counter, force, male plate, or other device or material which is to resist the impression-blow and just before the die descends the said lay-over drops on the paper around the resisting device and is not raised until after the die has been lifted and has started to move away, thereby insuring proper registration of the paper and preventing it being carried away during the operation of the press.

Referring to the accompanying drawings, Figures 1, 2, and 3 are respectively a plan, a side elevation, and a front sectional elevation of my lay-over. Fig. 4. is a section on the line A A, Fig. 2. Fig. 5 is a detail sectional view to an enlarged scale; and Fig. 6 is a similar view to Fig. 2, showing the paper held down upon a counter or other device which is to resist the impression-blow.

The lay-over comprises a pin a, sliding vertically in a hole Z) in the frame 0 of the press and carrying lay-over plates 61 at its top, while at the bottom is fitted a plate e, in which are mounted two rollers j, that bear against a face 9 on the frame 0, and so prevent the pin a turning. Another roller h is also secured to the plate 6 and rests on a cam-ring i, fixed to a rotary vertical shaft A depression .7; in the cam-ring i permits the pin a to drop at the right moment, the plates d then holding the paper. After the impressiono blow has been struck the inclined side of the depression 76 moves under the roller h, and so raises the pin a and its plates (1, which are kept raised until the depression again comes under the roller h.

The pin a has screwed into its upper end the hollow shaft 1 of a dovetailed head I of gradually-decreasing width,and a correspond ing recess m is formed in the under side of a bar n, on which is mounted a sliding carriage 0 in a transverse groovep, on which the plates 01 rest. The bar it when in position on the dovetailed head Z, carried by the pin a, is held by a chisel-headed spring-bolt g, which is located in a hollow part of the pin a and passes through the hollow shank Z, as shown in Fig. 5, said bolt engaging in a notch in the bar at in such a way as to prevent accidental dislodgnient of the bar, but so as to yield sufficiently readily to allow the bar to be detached by hand. The bolt q is formed with a groove q, with which a set-screw engages, so as to prevent the bolt q turning in the hollow pin a.

The plates d, which are of L shape, are slotted, and each is fixed in position by a setscrew 4' passing through it, said screws extending through holes in the carriage 0 and through a slot in the bar a into tapped holes in a sliding strip 3, the arrangement being such that by slacking the set-screws the plates 61 may be so adjusted that they encircle the counter on three or more sides and rest upon the paper which is to receive the impression, as shown in Fig. 6, and so as to hold the paper down around the counter slightly below its active surface, thus keeping the paper out of contact with the edges of the die. The plates (1 being slotted can be moved trans versely on the bar a, and the plate-carriage 0 being movable longitudinally along the said bar the plates can be readily adjusted to suit various dies. 7 An adjustable stop i may be provided on the press to regulate the drop of the lay-over according to the thickness of counter employed.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is 1. A lay-over device comprising a support we for the paper, fingers adapted to rest upon the paper and depress it around said support, means for supporting, and for moving the said fingers toward and from the papersupport at the required times and parallel therewith, as set forth.

2. A lay-over device comprising a support for the paper, fingers adapted to rest upon the paper and depress it around said support, apin capable of being reciprocated and to which said fingers are attached, means for reciprocally moving said pin and attached parts at the required times, as set forth.

3. Alay-over device comprising means for supporting paper, fingers adapted to rest upon the paper, a vertically-reciprocating pin to which said fingers are attached guide-rollers carried by said pin, a vertical face against which said rollers bear and means for reciprocally moving said pin and attached parts at the required times, as set forth.

4. A lay-over device comprising a support for the paper, fingers adapted to rest upon the paper and depress it around said support, a pin capable of being reciprocated, means for detachably connecting said fingers thereto,

means for guiding said pin and attached parts and means for reciprocating said pin at the required times, as set forth.

5. A lay-over device comprising a support for the paper, fingers adapted to rest upon the paper and depress it around said support,

means forreciprocating at the required times, the said fingers toward and from the said supporting means, as set forth.

6. A lay over device comprising fingers adapted to rest upon the paper, a verticallygers adapted to rest upon the paper, a slotted cross-bar, means for detachably securing said cross-bar to said pin, a carriage adapted to slide on said cross-bar and form ed with holes,

a clamping-strip formed with tapped holes, and set-screws adapted to pass through said fingers, carriage and cross-bar into the clamping-strip, as set forth.

9.- A lay-over device comprising fingers adapted to rest upon the paper, a verticallymovable pin to which said fingers are attached, rollers carried by said pin, a vertical face against which said rollers bear, a cam-roller carried by said pin and a rotary cam bearing against said roller, as set forth.

10. A lay -'over device comprising fingers adapted to rest upon the paper, a longitudinally-movable pin with dovetailed head, a cross-bar to which said fingers are secured and formed with a transverse recess fitting said head, and a spring-bolt carried by said pin and adapted to engage with said cross bar, as set forth.

11. A lay-over device comprising fingers adapted to rest upon the paper means for supporting, for guiding and for raising and lowering at the required times the said fingers, and an adjustable stop for limiting the downward movement of the said fingers, as set forth.

Signed at 22 Bride Lane, London, England,

the 12th day of January, 1900.

JOSEPH YARDLEY J OIINSTON. Witnesses:

WVILLIAM B. CHILD, ARTHUR WOOSNAM.

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