US309075A - Island - Google Patents

Description

(1N0 Modem 3 Sheets-Sheet 1.

I 0. B. MAXSON. SHEET DELIVERY APPARATUS FOR PRINTING EEEssEs,

PatentedDec. 9, 1884.

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(No Model.) 3 SheetsSheet 2.

0. B. MAXSON; SHEET DELIVERY APPARATUS FOR PRINTING PRESSES.

No. 309,075. Patented Dec. 9, 1884.,

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3 .D e e h S w e e h S v N O S X A M B O (No Model) SHEET DELIVERY APPARATUS FOR PRINTING PRB-ssss. Nd. 309,075.

Patented. Dec; 9, 1884.

WITNESSES ATTORNEYS N. r-zrzas. Phoiuinhugnphar, Washingmn. n. c.

lhvrrnn Smarts Parana Unmet.

CHARLES B. MAXSON, OF \VESTERLY, RHODE ISLAND.

SHEET-DELIVERY APPARATUS FOR PRINTING-=PRESSES.

SPECIFICATION forming part of Letters Patent No. 309,075, dated December 91, 1884:.

(No model.)

I 0 (LE whom it may concern.-

Be it known that I, CHARLES B. MAXSON, a citizen of the United States, residing at Westerly, in the county of lVashington and State of Bhode Island, have invented new and useful Improvements in Sheet-Delivery Apparatus for Printing-Presses, of which the fol.- lowing is a specification.

The object of my invention is to produce an improved sheet-delivery apparatusfor printing-presses, and especially cylinder-presses, whereby the sheet may be delivered with its freshly-printed side upward and without being touched on such side by any part of the apparatus. This object I have accomplished as hereinafter described, and illustrated in the accompanying drawings, in which-- Figure l is a side elevation of my apparatus, showing it applied to a printing-press. Fig. 2 is a plan or top view thereof. Fig. 3 is a detail longitudinal section of the same.

Similar letters indicate corresponding parts.

The letter A designates the press-frame, constructed to support the revolving impressioncylinder B and the type-bed O in proper relation to each other.

D indicates a spur-wheel arranged on a shaft, D, to engage a horizontal row or series of studs, 0, on a pendent portion of the bed alternately above and below the plane of the studs, for imparting the proper motion to the bed; and B, Fig. 2, denotes a cog-wheel arranged on the shaft of the cylinder to gear with a driving-shaft, B for imparting the proper motion to the cylinder. 7 In a suitable cavity of the cylinder B are arranged the usual grippers, B, for holding the sheet to be printed on the cylinder, these grippers being opened and closed by trip-pins B, acting on a cam, B of the gripper-shaft. The cylinder B makes two revolutions during a complete traverse of the bed in both directions, and to adapt the grippers B to such motion of the cylinder the trip-pins B are alternately thrown out of action by means of a cam, B, and eam-levers B, the whole eonstituting a press of well-known construction.

To one of the longitudinal edges of the bed 0 is secured a rectilinear rack, F, which gears with a circular rack or wheel, F, adjacent to one end of the cylinder B, so thatin the operation of the bed a rotary motion is imparted to the circular rack in reverse directions by means of the rectilinear rack. The circular rack F turns independently of the cylinder B in suitable guides, or, if it be a wheel, on the oylinder'shaft, and it gears with a pinion, F", on one end of a spindle, G, on which are mounted a series of reels, G, having connected thereto one end of a series of tapes, H, which thence extend over pulleys I of a can riage, I, and the other end of which is connected to a fixed part of the machine, so that if the tapes are wound on the reels they act on the carriage with a tendency to draw it inward toward the reels.

In the example shown, the reel-spindle G has its bearings in rods J J, which are connected together by a cross-bar, J, constituting the fixed part, to which the proper end of the tapes H is connected, these rods being properly arranged on the press-frame to guide the tape-carriage I. The tapecarriage I comprises two slides, which are fitted on the guiderods J J, and are connected together by the spindle I of the pulleys I. Each of the carriage-slides is exposed to the action of a spring, K, having a tendency to impel the carriage in a direction away from the cylinder, so that if the tapes H are free to wind off from the reels G the carriage takes the outer position. (Shown in Figs. 1 and 2.)

The position of the tape-reels G in relation to the cylinder B is such that as the printed sheet leaves the cylinder it travels onto the tapes H, and to insure its reception thereon fingers L are employed to lift the leading end of the sheet as it is released by the cylindergrippers, as indicated in Fig. 3, these fingers being mounted on a rock-shaft, L, which has its bearings in the rods J J, and on which is also mounted a lever, L engaging with a cam, L, for imparting the proper motion to the fingers. In the motion of the bed 0 the tapes H are wound on the reels G, due to the revolution thereof by the gearing F F F and alternatelywound off therefrom by the action of the carriage-impelling springs K. The extent to which the tapes H are thus wound on the reels is such that the tape-carriage I is thereby brought to the inner position shown in Fig. 3, so that if the printed sheet is then in position on the tapes it drops through the space created by the withdrawal of the carriage, and a suitable table being provided to catch the sheet, the latter is delivered with its printed side upward, and without being touched on such side by any part of the apparatus.

The winding operation of the tape-reels G is such in relation to the motion of the cylinder 0 that the sheet is entirely received on the tapes whilethe carriage I is in its inner position, and it follows that in the ensuing outward movement of the carriage the sheet travels with it on the tapes. \Vhen the carriageIreaches its outer position, which is the point of delivery of the sheet, the leading edge of the sheet is presented to grippers 0, which press said edge up against the stationary rod 1?, Fig.

1, and J hold the sheet in position, while the carriage again moves inward to clear aproper space for the delivery of the sheet. These delivery-grippers O are mounted on a shaft, 0, on which is also mounted a lever, 0 connecting with a cam, 0 by means of a rod, 0, in such a manner that the grippers are closed against the rod P, Fig. 1, at the proper period, while when the tape-carriage reaches its inner position the grippers are opened, as shown in Fig. 3, thus releasing the sheet and permitting it to drop.

Various modifications of my invention may be made-as, for example, the proper end of the tapes H may be connected to the carriage instead of to a fixed part of the machine, in which case the pulleys I may be omitted; and instead of the springs K a weight or any other suitable means may be employed to impelthe carriage in an outward direction for winding the tapes off the reels.

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

1. The combination, substantially as hereinbefore described, with the impression-cylinder and type-bed, of the tape-reels, the tape-carriage, the delivery-tapes, and a means, substantially as described, for winding the tapes alternately on and off the reels.

2. The combination, substantially as hereinbefore described, with the impression-cylinder and type-bed, of the tape-reels, the tape-carriage, the tapes, the reel-spindle, the pinion of the reel-spindle, the circularraek gearing with the pinion, the rectilinear rack of the bed gearing with the circular rack, and the impelling-springs of the tape-carriage.

3. The combination, substantially as hereinbefore described, with the impression-cylinder and type-bed, of the tape-reels, the tape-carriage, the sheet-delivery tapes having one end connected to the reels, thence extending over pulleys of the carriage, and having the other end connected to a fixed part of the machine, and a means, substantially as described, for winding the tapes alternately on and off the reels.

4. The combination, substantially as hereinbefore described, with theimpression-cylinder, its gripper, and the type-bed, of the tape-reels, the tape-carriage, the sheet-delivery tapes, a means, substantially as described, for winding the tapes alternately on and off the reels, and the lifting-fingers adapted to act on the leading edge of the printed sheet as it is released bythe cylinder-grippers.

5. The combination, substantially as hereinbefore described, with the impression-cylinder and type-bed, of the tape-reels, the tape-earriage, the sheet-delivery tapes, a means, sub stantiallyas described, for winding the tapes alternately on and off the reels, and the delivery-grippers adapted to seize the leading edge of the sheet in the outer position of the carriage. v

In testimony whereof I have hereunto set my hand and seal in the presence of two subscribing witnesses.

CHARLES B. MAxsoN. L s.] IVitnesses:

GEO. I. FENNER,

GEORGE COLFAX.

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