US148050A - Improvement in printing-presses - Google Patents

Improvement in printing-presses Download PDF

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US148050A
US148050A US148050DA US148050A US 148050 A US148050 A US 148050A US 148050D A US148050D A US 148050DA US 148050 A US148050 A US 148050A
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shaft
platen
cam
secured
ink
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41FPRINTING MACHINES OR PRESSES
    • B41F1/00Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/22Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed specially adapted for printing heads, e.g. letter heads

Description

3Sheets--Sheet1 G. P. GORDON. Printing-Presses.

Patented March 3,1874.

WITN ESSES INV ENTOR.

3 Sheets--Sheet2.

G. P. GORDON.

Printing-Presses NCAA-8,050. Patented March 3,1874.

I n I l G PM QWCDMMW) ssheetsshee is. G. P. GORDON. Printing-Presses.

N0 148 050, Patented March3, 1874.

AM H1072?! II'IMMAP/l/C 61/11 Z (mam/leis mamas.)

UNITE STATES PATENT OFFIoE.

fQEoRGE P. GORDON, on RAHWAY, NEW JERSEY.

- IMPROVEMENT IN PRlNTlNG-PRESSES.

Spool ication forming part of Letters Patent No. 148,050, dated March 3,1874; application: filed t," March 11,1873.

.To aid whom it may concern:

V Bic it known that I, GEORGE P. GORDON, of" Rahway,Union County, New Jersey, have invented, made,'and applied to use Improvements in the Construction of Printing-Presses;

and that the following is a full, clear, and correct description of the same, reference being had to the accompanying drawings, in which- Figure 1 is a side elevation of my improved printingpress. Fig. 2 is a side elevation of the same, showing the cam in cog-wheel. Fig.

3 is a side elevation of the same, showing the in certain improvements, as more fully hereinafter set forth, in the construction of printingpresses, and will be found to relatemore particularly to the means employed to operate and secure the platen in position to receive the impression in new and novel means to operate the gripers of the press expeditiously; in the means employed to vibrate and rotate the ink-distributing tables, as more fullyhereinafter set forth; in combining with the vibrating ink-tables the ink-fountain, operatin g substantially as more fully hereinafter described.

To enable those skilled in the arts to make and use my invention, I will describe the construction and operation of the same.

A shows a frame for supporting the operative parts of my improved printing-press. B shows the driving-shaft of the machine held in boxes in the frame A. Upon one end of this shaft B is keyed a pinion, O, gearing into a cog-wheel, D, secured upon one end of a shaft, E. Upon the opposite end of the shaft E, which shaft is inserted in the frame A, is keyed a blank-wheel, F. The cog-wheel D is provided with a cam, (I, cut or formed in it, the purpose of which will be hereafter fully explained. G shows the shaft, having its bearings in the frame A, upon which is keyed theplaten H of the machine. This platen H is constructed with the lugs it placed behind it, and these lugs are keyed or bolted upon the shaft G, sothat as the shaft is turned the platen H will be rocked from the position at which it receives'the sheet to be printed, to the position at which it receives the impression, and, an impression having been given, back to the proper position to allow the printed sheet to beremoved from the platen, and the next or succeeding sheet to be printed to be received. Upon one end of the shaft G is secured a crank-arm, I, having inserted in it a stud and roller, J, which roller plays in the cam d of the cog-wheel D, which cam 61 is properly shaped to give the desired movements and periods of rest to the platen H. The blank-wheel F has a cam, f, cut in it. K shows a rock-shaft held in the frame A, back of the platen H, and having cast upon it the arms L, made of suitable length to be received behind the stops k of the platen H when the platen is in position to receive the impression, and the projections are rocked up into position behind the stops h of the platen II.

It will be observed that the stops h consist of projecting plates or pieces the rear ends of which are partially planed away, the balance of the rear end being allowed to remain and form an ear or stop, against which the projecting arms L are brought into contact and stopped, while the forward ends of the stops k are attached to or cast upon the rear of the platen H. Upon one end of the rock-shaft K is secured a crank-arm, M, provided with a stud and roller, N, which roller plays in the cam f in the blank-wheel F, properly shaped to rock the shaft K, and with it the projections L, into position against the stops h attached to the platen H, as already described.

The arms h of the platen H are made sufficiently long to receive between them a counter-balance, Q, to counterbalance the weight of the platen H. 1

Between ears attached to the lower ends of the platen H is inserted the griper-frame It, intended to support the gripers S employed to relieve the printed sheet from the form or types This griper-frame R is so constructed that one end of it projects beyond one of the ears secured to the platen H, and is provided with an arm, in the lower end of which is inserted a stud and roller, T, )laying in a cam,.U', pro

' to the closed position at which the matter to be printed receives the impression. This cam- U is hung upon abolt iusertedin the frame A, and is free to swing upon the same. A stop or pin, V, secured iir'the frame A, is placed behind the cam U and limits its rearward movement. Vi shows a rod inserted in the frame A, upon which shaft is hung supports for the bed Y provided with the lugs Z. to which are connected the forward endsof the swinging lever 1, the rear end of which lever impinges upon the cam portion of the rock-shaft l. 2 are the roller-arms, constructed in the manner in which I usually construct them, and reference may be had to Letters Patent granted me January 7, 1862. They are fixed upon the rock-shaft- P and move with it as motion is imparted to it through the connectingrod 3 having one end attached to the crank-arm a secured upon the rock-shaft P, and its opposite end passed over a stud inserted eccentrically in the cog-wheel D.

The ink-distributing apparatus consists, in the present instance, of the circularplates or disks 5,,onc of which is supported by the bracket 6, through which its spindle is passed, and the opposite or upper table supported by the bracket 7, into which its spindleis inserted and held by a washer and setscrew, 8. The brackets 6 and 7 are secured upon a shaft, 9, inserted in the frame A of the machine. Directly beneath this shaft 9 is inserted a shaft, 10, upon which is secured a cam, 19 in which plays a roller secured upon a stud attached to the lower bracket 6. shaft 10 is keyed a crank-arm, 11, provided with a stud, over which is passed one end of the'connect-ing-rod 12, the opposite end of the same being passed over a stud secured in the blank-wheel F. Upon the spindle of the lower table is attached a disk, 13, having a series of ratchet-teeth out upon its under side,

with which the forward .end of a pawl, 14, engages. This pawllet is held in a lever hung upon a support secured in the frame A, and has upon its lower end a roller, 15, which impin ges upon a cam, 16 secured upon the rock- 'shaft 1 Two scored pulleys, 16, are placed in position upon the shaft 9, and over these and the grooved portions of the plates or disks 5, an endless belt or chain, 17, is passed. The

inking apparatus further consists of a fountain, 18, attached to the forward end of the lower bracket 6, so as to allow the feedroller of the same to project beyond or in front of the lower table or disk. The spindle of the feed-roller projects beyond the side of the fountain, and may be connected with and operated by any convenient means, so that the feed-roller shall make a part of a revolution, or i'ull revolution, if desirable, as the bed is thrown forward to give an impression.

The fountain is so located that the inking- Upon the endof this.

employed, one upon each side of \the ink-disks 5, to guide the inking-rollers as tho y pass from the bed-bearers.

Such being the construction, the :peration is as follows: WVe will suppose the ink .to have been properly distributed by the inkingiapparatus, the form to have been secured upo' :1 the bed Y, and the sheet to be printed to have hgeen laid upon the platen H. Motion being impar i ed to the driving-shaft B, the same, through tli' e pinion O secured upon it, communicates mo-\ tion to the cog-wheel D, in which is cut the v,

cam (I. As this cog-wheel D revolves, the cam cl causes the stud and roller J held in the crankarm I, secured upon end of the shaft G, to be set in motion and torock the platen H, secured upon the shaft G, from the position it occupied to receive the sheet to be printed, into a position to receive the impression, which position is arrived at when the platen H has been rocked from the inclined position it occupied when it received the sheet to be printed, into a position parallel with the type secured upon the bed Y. In this position it will be seen that the bottom ends of the platen H rest firmly upon the frame A, so that no farther downwardmovement of the platen is possible. Simultaneously with this movement of the platen H the cam f in the blank wheel F has operated the roller N held in the crank-arm M, so that the rock-shaft K is rocked up, and its. projecting arms L are brought into position directly behind, and having a bearing against the stops 702 attached to the platen H. \Vith the platen H in this position, its lower ends resting upon the frame A, and the projections L upon the rock-shaft K bcarin g directly against the stops h so that the platen H shall be stationary and unable to move while the impression is being given, the forward movement of the bed Y is effected through the movement of the rock-shaft P operated by theconnecting-rod 3, by which movement the cam-portion of the shaft 1? is brought into contact with the rear of the arm 1, the forward ends of which are attached to the lugs Z, as described, and a forward movement is imparted to the bed, and an impression is given. The shaft 1? continuing its movement, the cam portion of the same is withdrawn from contact with the rear end of the lever 1, and the bed Y recedes from the platen. The gripers, which have been adjusted in position so as as to impinge upon the ends of the sheet to be printed, as the bedY recedes from the platen H relieve the sheet from the type, and the motion of the press continuing, the cams d and f, through the rollers J and N, cause the projecting arms L upon the rock-shaft K to be rocked away from contact with the stops If, and the platen H to be rocked back to its former position to allow the printed sheet to be removed and the succeeding sheet to be placed upon the platen H. r

The inking apparatus, as already stated, consists of the two disks or plates 5, both of which are charged or supplied with ink, These disks or plates are constructed and operated so that the rollers shall receive their supply of ink first from one disk or plate, and then from the other disk or plate, before they are brought into contact with the form, and, secondly, that these plates shall revolve in opposite directions, to distribute the ink evenly while the rollers are inking the form.

I will describe the operation of the devices employed to effect these results.

As the rollers pass up and over the form they are carried over the lower disk 5, from which they receive their first supply of ink. When they reach the terminus of their upward movement (through the rocking movement of the shaft P) the connection 12, at tached to the crank-arm 11, and the blankwheel F, cause the shaft 10, upon which is secured the crank-arm 11, to be rocked so that the cam 19 is thrown down a sufficient distance to depress the tables or disks 5, (through the roller secured upon a stud attached to the lower bracket 6,) so that as the ink-rollers pass do wn they will receive their second supply ofink from the under side of the upper table or disk. The rollers, having received this second supply of ink, now pass down to impart the same to the type secured upon the bed Y, and the second movement of the tables or disks is effected while they are so doing. As the rock-shaft P rocks from the position necessary to give a forward movement to the bed Y, the cam 16 impinges upon the roller attached to the ratchetlever, and the pawl 14 has a forward movement imparted to it. The pawl 14 engages with the teeth upon the under side of the disk 13 attached to the spindle of the under table, and a forward movement is given to the lower table in one direction. This table, as already stated, has passed over the grooved portion of it the endless belt or chain 17 which also passes over the grooved portion of the upper table or disk, and as a movement in one direction is given to the lower table, a movement in the opposite direction is given to the upper table or disk through the endless belt or chain 17. a

The particular advantages of these movements of the tables are found in the ability to supply thoroughly and evenly distributed ink to the rollers by which the form is inked, and to rapidly distribute fresh ink added from time to time to the disks.

The fountain already spoken of may be used as a means to supply the ink to the tables and the rollers as they pass up and over and away from the form, each receive a supply of ink from the fountain, which they impart to the good work; that, by hanging the cam U in which the roller'T of the griper-frame R plays, as shown, the gripers S can be depressed upon the platen H and speedily adjusted to an impression pulled upon the tympan-sheet secured upon the same.

Having now set forth my invention, what I claim as new is- 1. The vibrating cam U, in combination with the griper-frame R, constructed and operating substantially as and for the purposes set forth.

2. The combination, with the disks or plates 5 supported as shown,of the rod 10, cam 19, roller secured to the bracket 6, crank-arm 11, and connection 12, substantially as and for the purpose specified.

3. The combination, with disks or plates 5, of the fountain 1S and the inking-rollers 19, substantially as and for the purpose set forth.

4. The combination of the disks or plates 5, cam 16 pawl 14, ratchet-disk 13, and endless belt 17, substantially as and for the purpose specified.

eno. r. GORDON.

In presence of WM. HASTINGS,

A. SIDNEY DUANE.

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489588A (en) * 1945-03-10 1949-11-29 Chandler & Price Co Inking mechanism for printing presses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2489588A (en) * 1945-03-10 1949-11-29 Chandler & Price Co Inking mechanism for printing presses

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