US290748A

US290748A - Printing-press

Info

Publication number: US290748A
Authority: US
Publication date: 1883-12-25
Anticipated expiration: 1900-12-25

Description

2 Sheets-Shet 1.

(No Model.)

C. B. C OTTRBLL.

PRINTING PRESS.

N. PETERS. Pmumngnpnen wminglm n c.

(No Model.) C; B GOTTRELL' 2 Sheets-Sheet 2.

PRINTING PRESS."

Patented Dec. 25, 1883.

N. PETERS, Phowulhagmpnar. washmgmn, Dlc.

vof or beyond said cylinders.

Y l UNITED STATESV PATENT Orricm CALYERT B. COTTRELL, OF STONINGTON, CONNECTICUT.

PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 290,748, dated December 25, 1883.

l Application filed January 20, 1883. (No model.)

Stonington, in the county of N ew London and State of Connecticut, have invented a new and useful Improvement in Printing-Presses, of whichthe following is a specication.

In my application for Letters Patent filed January 23, 1883, and of which the serial number isv 82,822, I have shown and described a press for color-printing on a continuous web of paper, in which two or more pairs of type and impression cylinders are driven by means of endless spur-toothed racks engaging with spur-wheels on the cylinder-shafts, and supported upon wheels independent of and beyond or outside of the type and impression cylinders.

My present invention relates to presses with 'substantially similar cylinders and racks for with a feed-board and two or more pairs of Von the shafts of the said cylinders, of two endtype and impression cylinders and spur-wheels less spur -toothed racksV engaging withand driving said spur-wheels, and gripper rods or bars extending between and connected with said racks, and provided with receiving-grip persy for taking the sheets, bags, or articles from the feed-board and presenting them to the type-cylinders. Y

The invention also consists in the combination, with two or more pairs of type and impression cylinders geared together, one cylinder of each pair being provided with a spurwheel and the other with acircumferential groove opposite the spur -wheel, of two end-l less spur-toothed racks working in the grooves in the several cylinders and gearing into the spurwheels on the other cylinders, and supporting-wheels for said racks arranged outside The invention also consists in the combinar,y

. tion, with the pairs of cylinders and endless i ating them to take the sheets or articles from the receiving-grippers, as hereinafter more fully described.

The invention also consists in other combinations of parts hereinafter described and claimed. The accompanying drawings illustrate the nature of my invention.

Figure lis a longitudinal vertical section of a press. Fig. 2 is a similar section of the 6o feeding end of the press upon a larger scale. Fig. 3 is a plan of a part of the mechanism shown in Fig. 2. Fig. 4 is asection of the delivery end of the press on the same scale as Figs. 2 and 3; and Fig. 5 is a plan of the mech- 6 5 anism shown in Fig. 4, and on the same scale.

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

A B designate the type and impression cylinders, three pairs or which are here shown; 7o but my invention may be embodied in a press having two pairs of cylinders or more than three pairs. The cylinders A B are mounted in bearings in side frames, C, and the bearings of the upper or type cylinders, A, may be adjustable in a well-known manner, by means of screws, to bring the cylinders of each pair into proper relation to each other. Each of the cylinders A should be provided with inking apparatus D,lil;e the right-hand cylinder in 8o Fig. 1. The cylinders of each pair are geared together by wheels c, to cause them to rotate 1n unison.

' E designates endless driving-racks, which are provided with spur-teeth, and `are com- 8 5 posed of rigid sections pivoted or connected by pins or pivots b, the spaceat each joint being equal to a tooth-space. These racks are mounted on polygonal wheels E', which are arranged on shafts E2, outside of or beyond 9o the pairs of cylinders. The left-hand wheel E is here shown as mounted in fixed bearings; but the right-hand wheelis mounted in bearings E3, which may each be adjusted by `means of a screw, c, fitting a nut on the bearing. EachV screw has a worm-wheel, c', Xed r to it, and with the worm-wheels c engage worms or screws egon a shaft, which extends transversely ofthe machine,r and may be turned at either end. By this means I provide for roo regulating the tension on the racks E.

Upon each of the type-cylinders A is a spurwheel, F, and opposite the wheels F the impression-cylinders are provided with grooves or portions of reduced dia-meter, d, as shown dotted in Figs. 1 and 4. The racks E work in the grooves or portions d of reduced diameter and engage with the wheels F, and as the cylinders or" each pair are geared together by the wheels c, the cylinders are all caused to move in unison.

G designates a driving shaft extending transversely across the machine, and provided with fast and loose pulleys G G to receive a driving-belt, and with pinions e, which gear into and drive the racks E, and through them drive the cylinders; but, if desired, the shaft G might be dispensed with and the motive power applied directly to one cylinder and through the racks to the other cylinders. In order to support the upper portions of the racks, which are always operative, I provide slideways or guides H, which between the cylinders are supported by brackets f from the side frames, C. These slideways may be channeled or provided with side anges, Vso as to guide the racks laterally, and the' racks may have their whole un der or inner surfaces tted to the slideways or guides, or may beprovided at the pivots with rollers adapted to run in saidvslideways or guides.

I designates a feed-board arranged above the racks E, and from which the sheets or articles to vbe printed may be fed.

Extending between and connected to the racks E are pairs of bars or rods g h.. Upon the bars or rods g, and at intervals along their length, are iiXed grippers y', and at corre-V sponding intervals on the bars or rods h are cushions or pads h, on which the grippers may close. rIhese grippers constitute the receiving-grippers of the press, and take the sheets or articles to be printed from the feedboard I. At the end of each gripper bar or rod g is an arm, g`, to which is attached a spring, g3, as shown in Fig. 3, and this spring tends to hold the grippers tightly closed on the cushions or pads 7L', and causes them to tightly hold the sheets or articles.

Adjacent to the edge of the feed-board I is a cam or projection, i, and as the gripper rods or bars g pass this cam or projection their arms g2 bearnpon it, and the rods or bars are turned so as to open the grippers, as shown in Figs. 2 and 3, and when released the grippers close on the edge of the sheet or article pre-` sented to them and draw it from the feed-l board and carry it successively between the cylinders of the several pairs. It will be observed that the cylinders of the several pairs are provided with peripherical recesses j, which receive the grippers and enable them to pass between the cylinders.

Near the delivery end of the press is a cam or projection, t", and as the grippers reach this the arms g2 strike it, and the gripper rods or bars g are turned so as to release the printed sheets or articles and allow them to be taken by the delivery-grippers, which I will now describe. f

- J designates a gripper-carriage composed of two end portions adapted to travel on slideways or guides 7c, and connected by gripper rods or bars Z, which are provided with grippers or gripper-hngcrs Z. The two end portions of the carriage J are attached to chains m, one of which is shown. and which pass around chain-wheels m and also around outer chain-wheels, fm2. (Shown in Fig. 1 only.) By rotating the chain-wheels m alternately in opposite directions, the chains fm are reciprocated and the carriage J is moved to and fro to enable the grippers l to take the printed sheets or articles and deliver them into a receptacle. (Not here shown.) Upon the same shaft as the chain-wheels m is a pinion, n, and below is a shaft, n', bearing at one end a wheel, a2, which engages with the pinion, and at the other end, and outside th frame of the press, a second pinion, ng.

K designates a rack-bar, which rests upo and gears with the pinion n3, and which is forked to embrace and slide upon the shaft of the end impression-cylinder, B. Upon the rack is a pin or roller, 91.*, which engages with a grooved cam, L, on the shaft of said impression-cylinder B, and by said cam the rack is reciprocated and the reciprocating motion is transmitted to the chains m and to the grippercarriage J.

In Fig. 5 I have only shown one side of the press; but of course the mechanism just described for operating the gripper-carriage should be duplicated on the other side of the press.

The gripper rods or bars Z of the carriage J are provided at their end with arms Z2, which are connected by toggle-levers o and a spring,

o Vhen the toggle-levers o are straightened or brought into line, the grippers Z are open, or held apart, as shown in Fig. 1, and this is the position they occupy during their inward movement. their inward movement the toggle-levers o strike a stop, o2, (shown in Fig. 5,) and are thereby deiiected or broken down,77 as shown in Figs. 4 and 5. The spring o then acts and draws or moves the grippers Z together or closes them on the printed sheet or article, whereupon they move outward. As they reach the end of their outward movement the toggle-levers o strike a projection or stop, o, (shown in Fig. 1,) and are straightened, thereby opening the grippers Z and causing them to drop the sheet or article.

.Immediately below the driving-shaft G is a second shaft, '0, upon which are wheels O', which support the racks E oppositethe points where the pinions e gear into them, and prevent the racks from being deflected.

If desired, I may provide the type-cylinders A with circumferential grooves d, instead of the impression-cylinders, and in such case the wheels F, with which the racks E engage,

IOO

As the grippers reach the end or would be fixed on the shafts of the impressioncylinders B.

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

1. The combination, with two or more pairs of type and impression cylinders and spurwheels on the shafts of said cylinders, of two endless spur-toothed racks engaging with and driving said spur-wheels, gripper rods or bars extending between and connected with said racks and provided with receiving-grippers, and a feed-board from which sheets may be taken by said receiving-grippers, substantially as herein described. n

2. The combination, with two or more type and impression cylinders geared together and provided with spur-wheels, and with circumferential grooves opposite said wheels, as herein described, of two endless spur-toothed racks working in the grooves and gearing with said spur-wheels, and supporting-wheels for said racks arranged outside of or beyond said cylinders, substantially as herein described.

3. The combination, with'two or more pairs .of type and impression cylinders provided with peripherical recesses and with spurwheels, of two endless racks gearing into said spur-wheels, supporting-wheels for the racks outside of or beyond said cylinders, and gripper-rods provided with grippers extending between and connected with said racks, and adapted to be received in the recesses of said cylinders in passing between them, substantially as herein described.

4. The combination, with two or more pairs of type and impression cylinders provided with spur-wheels, of endless spur-toothed racks gearing with said spur-wheels, gripper rods or bars provided with receiving-grippers extending between and connected with said racks, a reciprocating carrier or carriers, and delivery-grippers mounted thereon and adapted to take the sheet from said receiving-grippers and deliver it, substantially as herein described.

GALVERT B.' COTTRELL.

Vitnesses:

FREDK. HAYNns, ED. L. MORAN.