US280584A

US280584A - cotteell

Info

Publication number: US280584A
Authority: US
Publication date: 1883-07-03
Anticipated expiration: 1900-07-03

Description

2 Sheets-Sheet 1.

(No Model.)

Patented July 3, 1883.

/72 ewiew:

N. PEIERS, F'hnwLilho rhu. Washingmn. n. c.

(No Model.) 2 Sheets- Sheet 2.

O. B. OOTTRELL.

DELIVERY APPARATUS FOR PRINTING PRESSES.

No. 280,584. Patented Ju1y 3, 1883.

N4 PETERS. Phnm-Limu mn wnhin mn. 0,0,

To all whom it may concern.-

UNITED STATES PATENT OFF CE.

CALVERT B. COTTRELL, OF \VESTERLY, RHODE ISLAND.

DEL IVERY APFARATUS FOR PRINTING-PRESSES.

SPECIFICATION forming part of Letters Patent No. 280,584, dated July 3, 1883.

' Application filed July 3, 1882. (No model.)

Be it known that I, CALVERT B. CoTTR'ELL of Westerly, in the county of Washington and State of Rhode Island, have invented a new and useful Improvement in Sheet Delivery Apparatus for Cylinder Printing-Presses, of which the following is a specification.

This invention relates to two-revolution and stop-cylinder presses in which the receivingtable is arranged in front of the impressioncylinder, and grippers are employed to take the printed sheet from the impression-cylinder and carry it to and deliver it upon said table with its-last-printed side uppermost. In such presses the delivery-grippers have been attached to a carriage adapted to be reciprocated to and fro between the cylinder and deliverytable upon fixed guides or ways.

My present invention consists in the combination, with an impression-cylinder and receiving-table, and a delivery-gripper carriage having a to-and-fro motion between said cylinder and table, of guides or ways for the support and guidance of said carriage, pivoted between said cylinder' and table, and having imparted to them,while the carriage moves to and fro upon them, a rocking motion,whereby as the printed sheet is drawn from the ey1in-' der and carried therefrom by the grippers toward the reciving-table the ends of the said guides or ways nearest the cylinder will be caused to rise, and thereby to lift the sheet and cause it to float higher above the formrollers than it would if the ways were fixed at a height near that of the top of the cylinder. The invention also consists in the novel combination of mechanism employed to rock the guides or ways and reciprocate the grippen carriage, as hereinafter particularly described.

In the accompanying drawings, Figure 1 represents a side view of such parts of a tworesents aseetion of certain parts on the plane of the dotted line 00 00, Fig. 1; and Fig. 6 rep resents a transverse section of one of the guides or ways on a larger scale.

Similar letters of reference designate corresponding parts in all the figures.

A designates the side frames, and B the impression-cylinder, mounted in suitable bearings in the side frames and adapted to be operated in any suitable manner.

0 designates a portion of the feed-board, and D designates the receiving-table, arranged in front of the cylinder and adapted to receive the printed sheets.

E designates two guides or ways which extend from the impression-cylinder B to and past or beyond the receiving-table, as shown in Fig. 1.

F designates standards rising from the frames A, and supporting a shaft, G, adapted to be rocked or oscillated, and the guides or ways E are provided with'frames or brackets E,which are secured to the shaft G, and which support the guides or ways thereon. Therefore it will be seen that by rocking the shaft G, or rotating it slightly in opposite directions, the guides or ways are rocked in vertical planes to depress the ends of the guides or ways which are at the receiving-table and raise the ends which are at the cylinder, and vice versa. The guides or ways E are here represented as of approximately cylindric form in their transversesection, and the brackets or frames E are attached or secured to the under side of the guides or ways, as best shown in Figs. 5 and 6, so as not to interfere with the sliding of the gripper-carriage upon the guides or ways. The guides or ways may be convnected at any desired points in their length, if

necessary, to cause them to move or rock together.

Upon the two guides or ways is fitted a carriage, H, which may be composed of two similar parts, each fitted to one guide or way, and connected together bya bar or gripper-shafts, so as to form in effect a single carriage. The grippers O are attached to the carriage H, and may be opened and closed by any suitable operating mechanism. (Not here represented.) Operating mechanism for the grippers of the kind shown in United States Letters Patent No. 256,641, granted to me April 18, 1882, may be used with advantage.

I designates a sleeve or tubular shaft loosely fitting on the shaft G, and carrying two flanged l wheels or pulleys, I, one arranged immediately below each guide or way, and a pinion, (1, adjacent to one of said wheels or pulleys. The sleeve or tubular shaft I fits between the two frames or brackets E, which are secured fast to the shaft G, and hence it will be understood that the shaft G and the sleeve or tubular shaft I can turn freely independently of each other.

In the ends of each guide or way E are small guide-pulleys e,- and f designates aband or belt passed around each of the pulleys or wheels I, over the guide-pulleys c, and attached at the two ends to the carriage II in any suitable manner. Each band or belt f is secured to the wheel or pulley I, around which it is passed, and hence it will be seen that if the tubular shaft or sleeve I is turned back and forth the wheels or pulleys I, acting through the belts or bands f, will produce the reciprocation of the grippercarriage along the guides or ways.

In lieu of employing one band or belt for each guide or way, I may attach the ends of two separate bands or belts to the carriage, and thence carry them around the wheel or pulley I in opposite directions, and attach them thereto. In such case each wheel or pulley I might have a third flange intermediate between its edges, so as to form two groovesone for each band or belt.

I will now describethe mechanism employed for oscillating the shaft G and the sleeve or tubular shaft I, premising, however, that other means may be employed for the same purpose.

J designates what is usually the cam-shaft of the press, and K designates a second camshaft, which is driven through the shaft J by gear-wheels K I" K K K K K from the cylinder 13.

Upon the outer end of the shaft K is a cam, g, which has a very short throw, and L designates a rod which receives a reciprocating motion from said cam, and has at its upper end a rack, 71, which engages with and operates on a small pinion, '17, 011 the shaft G. The rack h is held in engagement with the pinion i by a guide or roller, j, and as the rod L is reciprocated the ways or guides E are rocked slightly, with the shaft G as a pivot. The gearing for turning the tubular shaft or sleeve I and the wheels or pulleys I comprises the wheels is, fastened together and adapted to turn 011 a fixed stud, the former engaging with the pinion d on the sleeve or tubular shaft I, and two other wheels, I m, which are-fixed on a short shaft adapted to turn in the standard F, and the former of which, Z, engages with the wheel 7.1.

Upon the shaft K, just inside the cam g, is a second cam, 9, having a greater throw, and serving to impart a reciprocating motion to a rod, L, which has at its upper end a rack, 71 engaging with the pinion m, and held in engagement therewith by a guide-roller, j.

From the above it will be seen that as the tubular shaft or sleeve I and its wheels or pulleys I are turned, the gripper-carriage II will be caused to reciprocate to and fro between the cylinder B and receiving-table D for delivering the printed sheets.

I11 Fig. l the guides or ways are shown in full outline in the position for the grippers to take the sheet from the cylinder, and shown. in dotted outline in position for the grippers to deposit the sheet on the receiving-table. The rocking movement of the guides or ways E is very desirable, because as the sheet is being taken from the cylinder the guides or ways are rocked, so as to raise their ends which are adjacent to the cylinder, .and by this movement the sheet is kited or carriedhigh over the form-rollers, and is not liable to be smutted or dirtied.

Instead of having the shaft K a cam-shaft, it might be connected by steel bands or belts with the shaft G and the sleeve or tubular shaft I, and the shaft K might be oscillated or rocked by means of horizontal rack-bars actuated by cams on the ordinary cam-shaft, J.

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

1. The combination, with an impression cylinder and a receiving -table, of rocking guides or ways pivoted between said cylinder and table, and a reciprocating gripper-carriage fitted and adapted to travel on said rocking guides or ways, substantially as herein de scribed.

2. The combination, with the impressioncylinder and receiving-table, and the rocking guides or ways E, reaching from said cylinder to said table, and having areciprocating gripper-carriage thereon, of the rock-shaft G, to which the said guides or ways are permanently secured, the pinion '6 on said rock-shaft, and the reciprocating rack-bar L, gearing with said pinion, all substantially as described.

3. The combination, with the rocking guides or ways and their rock-shaft, and the reciprocating gripper carriage mounted on said guides or ways, of the wheels or pulleys I, adapted to turn on the said rock-shaft, independently thereof, the guide-pulleys c in the ends of said guides or ways, and the bands or belts f, connected with the gripper-carriage, attached to said wheels or pulleys I, and running on said guide-pulley c, all substantially as herein described.

4.. The combination of the guides or ways E, the shaft G, the carriage H, and bands or belts f, the tubular shaft or sleeve I, provided with wheels or pulleys I and the wheel (I, the pinion 2' on the shaft G, the wheel m and shaft K, the cam g and rack-bar L for acting 011 the pinion 5, the cam g and rack-bar L for acting 011 the wheel m, and wheels connecting the wheels (1 and an, substantially as herein described.

\Vitnesses: (l. B. COTTEELL.

FREDK. HAYNES, J AMES 1%. BOWEN.