US1092998A - Printing-press. - Google Patents

Description

W. M. KELLY. PRINTING PRESS. APPLIGATION FILED MAR. 28, 1913.

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w. M. KELLY. PRINTING PRESS. APPLICATION FILED MAR. 28, 1913 92,998. Patented Apr. 14, 1914.

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W. M. KELLY PRINTING PRESS" 'APPL'IOM'ION FILED MAR-.28, 1913. v 1,092,998. Patented Apr. 14, 1914 3 BHBETS-SHEET 3.

WILLIAM M. KELLY, or new YORK, a. "1., assrenoa 'ro AMERICAN TYPE rouwnnm COMPANY, or JERSEY CITY, new misses, a conronerron or NEW JERSEY.

PRINTING-PRESS.-

Specification of Letters Patent.

To all whom it may concern:

. Be it known that I, WILLIAM M. Kenny, a citizen of the United States, residing at New York, in the county and State of New York, have invented certain new and "useful Improvements in Printing-Presses, of

which the following is a specification.

This invention relates to printing presses of the type employing-a rotating impression cylinder and relates more particularly to improvements in the means for actuating the .paper grippers and shoo'flys.

The objects of the invention are to pl'Qjfvide a construction which is simple and ref-:

liable in operation. v The novel features of the invention will be-apparent from the following description taken in connection with the accompanying drawings, in which:

sion cylinder embodying my invention.

Figure 1 is a side elevation of an impres- Fig. 2 is a longitudinal section thereof. Fig. 3 is a transverse section on the line '33 of Fig. 2. Fig. l is an enlarged section on the line 4-& of Fig. 2. Fig. 5 is an en larged detail of the shooflyshaft actuating mechanism. Fig. 6 is a side elevation of a part of a printing press showing my invention applied thereto.

Referring to the drawings, 10 indicates the impression cylinder which is mounted .on a shaft 11 and is provided with the usual impression pad 12. The shaft 11 is preferably provided with a gear 13 on one end thereof whereby the cylinder is rotated from the driving mechanism of the printing press. The cylinder has in one side thereof an opening or recesslt, in which are arranged the gripper shaft 15 and the shoofly shaft 16, these shafts being parallel and supported in suitable bearings in the Walls of the cylinders The gripper shaft has arranged- 'i ig- 2 "cam 23, of comparatively steep pitch,'ar-

ranged on the gripper shaft 15 between bearings 24: and 25. By this construction.

fore stated,-nor1nally presses the sh shaft 19 and normally tends to press the same outwardly. The shaft 11 is also provided with a radial opening 21, in which is' arranged a rack or cam 22, this rack being secured to the shaft 19, as clearly shown in The rack 22 engages a worm or the shaft 15 will be rocked by m'oving the shaft 19 longitudinally in the shaft 11 and for the purpose of thus movingthe shaft 19 part 29. A lever 30 is pivotally mounted on a bracket 31 secured to the frame32 of 1ar..,e4.- which is arranged on the shaf The lower end of the lever 30 carries a. roller 35 whlclrengages the cam track 28 'an' d,=t1 S;i-

will be readily understood, will cause the? lever 30 to-be rocked as the cam wheel 27' 20 whichbears against the inner end of the i atented Apr. 14, 1914. Application filed March as, 1912. Serial No. 757,470.

.65 :I provide, on a shaft 26 of the printing 5 press,.which rotates in definite relation. to? the cylinder 10, a cam wheel 27. The cam Wheel 27 carries a face cam 28 having a high the printingpress and has its upper endin' engagement;v with the trunnions 33 on;: 'a 'o.l-

revolves. The roller 35 is held againstthe carng28by the springfiO, which, as here be.

outwardly. From-Fig. 2 it will be seen fiat when the shaft 19 is moved inwardly by the cam -28the gripper shaft 15 will be rocked in the direction to move the grippers 17 into engagement with the surface of the impression cylinder for the purpose of gripping a sheet of paper, and whenthe shaft 19 is moved in the opposite direction by the spring 20 the gripper shaft will be rocked in the reverse direction to release the sheet of paper. In Fig. 6 I- have also, shown a cam lever 32" and a link 37 which is actuated by the cam wheel. 27. This mechanism, however, relates to another part of the printing press and has no bearing on the invention claimed herein and therefore a description shaft, 16, which carries the shoofiys 38, I

have provided on this shaft an arm 39, prefera-bly adjacent one of the end walls of the cylinder, and a cam 40 on the gripper shaft '15.. The arm 39 is provided with a slot41 inwhioh is arranged a detent- 42. The detent 42 is normally held-in a position where it projects laterally from the side of the arm 39, by a spring 43, The arm 39 also has secured thereto a spring 44, the outer end of which engages a shaft 45, or any other suitable 'part of the" cylinder 10, for

thepu'rpose of normally holding the shaft 16in such, a position that the shoofiys 38 are in contact with the surface of the cyl- .inder' 10. v

Referring to Figs: 4 and 5 it will be seen that the cam'40 is provided with a radial extension 46 which is adapted to strike the side 47 of the detent 42 when the gripper shaft is rocked for the purpose of releasing the paper; The engagement of the cam project-ion 46' with the detent 42 rocks the shooflyf f's'haft 16 and causes the shooflys '38 to kick the edge of the-sheet of paper free from the surface of the cylinder; thusfacilitating its delivery from the cylinder. During the rocking. movement of the gripper shaft 15 the grippers 17 are carried to substantially' the position shown in dottedlines in" I Fig. 3 and in this position the cam proj'ection 46 will have passed the detent '42 and the spring '44 will hav'e caused the shoofly shaft to rock in the reverse"direction to its 1- original position with theshooflys in con- -tactwith the surface of the cylinder 10. On

operating mechanism of the printing press that the cylinder makes two revolutions for each reciprocation of the bed. On one of these revolutions the cylinder receives the sheet of paper and the paper is printed and onthesucceeding revolution the paper is discharged from.the cylinder. The'paper is fed to the cylinder'at regular intervals in any suitable manner, the cylinder rotating in the direction of the arrow shown in Fig' 3. lVhile the paper is being fed to the cylinder-the grippers 17 are out of contact with the surface of the cylinder and at the proper instant the grippers are moved into the position shown in full lines in Fig. 3 and thus secure the forward edge of the sheet. This movement of the grippers is efi'ectedby the cam 'roller 35 passing from the low part of the cam 28 to the high part 29 thereof, and thereby moving the shaft 19 inwardly. The

parts remain in this position until the cylinder makes practically a complete revolution when the grippers are rockedto release the paper by the roller 35 passing from the high part 29 of the cam 28 to the low par-t ste 7 thereof, as the wheel 27 rotates, thus permitting the spring 20 to. force the shaft- 19 outwardly. This rocking movement of the gripper shaft 15 causes the cam projection .46 to engage the detent 42, as hereinbefore described, and rock tlievshoofiy shaftyand thereby lift the forward edge of the sheet of paper from the surface of the cylinder. fore. the gripper shaft 15 reaches the end of this rocking movement the detent 42 passes the. cam projection 46 and the 'spring 44 rocks the shoofiy back to its original position with the shooflys 38 in contact with the surface of the cylinder, as shown in Fig. 3. The grippers remain in this .open position until after the receipt of the next sheet of paper when the operation is repeated, the shoofiys 38 remaining in engagement with the surface of cylinder during the reverse rocking movement of the gripper shaft.-

.l/Vhile I have illustrated and described what I consider to be thep'referred form of my invention it will be understood that the invention'is not limited to the -specific details of construction illustrated.

Having thus described the invention what is claimed as new is:

- 1. In a printing press, the combination of an im'press1on'cylinder, a gripper shaft car-- ried thereby, an axially movable shaft, carried by the cylinder, a rack and screw operatively connecting said shafts whereby the gripper shaft is rocked by the axially movable shaft, and means for actuating said axially movable shaft.

2. In a printing press, the combination of an impression cylinder, a gripper shaft carried thereby, an axially arranged shaft par: allel with the gripper shaft and carried by the cylinder, a rack on said axially arranged shaft,- a screw on' the gripper shaft engaged by said rack and whereby the gripper shaft isrocked by axial movements of said axially arranged shaft, and means for reciprocating said axially arranged shaft.

3. In a printing press, the combination of a shaft, an impresslon cylinder thereon, a gripper shaft carried by said cy11nder,-an axially movable shaft in said first-mentioned shaftand projecting outwardly from one end thereof, spring means for moving said. axially movable shaft in one direction, cam means for mov'in said axially movable shaft in opposition to said spring'means, and cooperating cams on said gripper and axially movable shafts for rocking said gripper v shaft by means of said axiallymovable shaft. D a

4, Ina prlnt nepress, the combination of an impression cylindena gripper shaftcarried thereby, a shoofly shaft carried-by the cylinder and arrangedparallel with the gripper shaft, means for rocking the gripper shaft in timedrelationto the revolutions of the cylinder, a cam on the gripper-shaft, an

arm on. the shoofly shaft havingvpii oted thereto a detent adapted to -.be engaged by said earn, when the gripper shaft is rocked in one direction, and rock the shoofly shaft,

and means for rocking the shoofiy shaft in the reverse direction before the end of said' verserecking movement of the gripper shaft ithout rocking the shoofly shaft. 10

In testimony whereof-I afiix my signature in presence of two witnesses. WILLIAM M. KELLY.

Witnesses: 1 I

J. A. WATSON, ARTHUR L; BRYANT.

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