US913119A - Throw-out mechanism. - Google Patents

Description

A. J. FORD.

THROW-OUT MEGHAMSM.

APPLICATION FILED MAR, 23, 15109, 91 3 1 19, Patented Feb. 23, 19094 3 SHEETSwSHEET 1.

` y L l' i JQ) 014 A. J. FORD.

THROW-OUT MECEANISM.

APPLIOATION FILED MAB., 23, 190B.

9 1 8, 1 19. Patented Feb. 23, 1909.

3 SHEETS-SHEET 2,

.In ve nor:

'liable construction which will o UNITED STATES PATENT OFFICE.

ALBERT FORI), UF NEW YORK, Y ASb'lGNOll T0 FUCHS AND LAM MAXllli'll'l'l'ltlNti COMPANY, A UllPUHA'llON Ul" NEW tlltli.

THROW-OUT MECHAN ISM.

Application Bled March 23,

To all whom glt may concern.'

Specification of Letters Patent.

190B. Serial No. 422,820.

citizen of the United States, residing in the borough of Manhattan, city of New York,

in the county of New York and Stute of New York, have invented a certain new and useful Im rovement in Throw-Out Mechanism,

of which the following is a specification,Z

reference bein had therein to the accompan 'ing drawings, forming art thereof.

y invention relates to w-out mechanism for coperatively en ging and disengaging the printing coup e of a printing press.

The object of the invention is to produce a throw-out mechanism of simple and rerate automatically, under the control of e operator, to disengage the printing couple in timed cooperation therewith, at the completion of one impression and before the commencement o another, the power of the printing press being utilized for this pur To this end the invention consists in the throw-out mechanism hereinafter described, as deined in the following claims.

I will now describe the embodiment of my invention illustrated in the accompanying drawings, and will thereafter point ont my invention in claims.

In the drawings Figure 1 is a side elevation of a portion of a printing press and a throw-out mechanism embodying the resent invention. Fig. 2 is a similar view, s wing the parts in the positions occupied after the throwingout operation. Fig. 3 is a detail view of a part of the throw-out mechanism seen from the opposite side of the machine. Fig. 4 is a front elevation of the mechanism.

The drawings represent a. portion of the frame 1 of a printing ress of the rotary type, together with the orm cylinder 2, the transfer cylinder 3, and the impression evlim der 4. The transfer cylinder engages `both the form cg'linder and the impression cylinder, and t e transfer cylinder and the im pression cylinder form the printin couple. flhe panting couple is disengagedglxy moving the transfer cylinder away from the impression cylinder, and as it is desirable to dlsengave `the transfer cylinder from the form cylinder at the same time, the transfer cylinder, in throwing it out of operation, is

'vmimicnted to the transfer Patented Feb. 23, 1909.

' moved horizontally so as to move nwuy from Be it known that I, ALBERT J. FORD, n

both the other cylinders at once.

The transfer cylinder is mounted on a shaft 5, und the shaft is journaled in sliding blocks (i adj ustnble in the frame of the press, by means of screws 7, to control the pres sure between the cylinders. To provide for throwing the transfer cylinder into and out of operation, eccentric-s 8 are interposed between the shaft 5 and the blocks and b rotating these eccentrics throu h a smul angle the shaft and the trans er cylinder may be moved slightly in a horizontal direction. The eccentrics ure moved by means of upwardly-extending arms 9, connected, b links 11, with arms 12 fixed to a rock sho t 13 journaled in the frame 1.

The transfer cylinder. when out of engagement with the other cylinders, is thrown into operation by means of u hand lever 14 xed to one end of the rock shaft 13 and provided with o handle l5. The movement of the hand lever is limited by the engagement of un arm lo thereon with :xn adjustable stop 1T on the frame l, the stop being adjusted to arrest the parts in the position in which the links ll and the :u'ms 12 are substantially in straight-line position. These links and arms have therefore a toffgle action in throwing the transfer cylinder into. and maintaining it in, operhtive engagement with the other cylinders. The movement of the lever 14 in the opposite direction is limited by un adjustable stop 1S.

The automatic mechanism for throwing out the transfer cylinder derives its power from a segmental friction member 19 provided with u surface 21 of leather or other suitable frietional material. The frictionnl member is pvotnlly mounted on and fixed to a rock shaft 22 and stands normally in the position shown in Fig. 1, the surface 21 beng close to :but ont of contact with` the end othe impression cylinder 4. When the friction member is raised into contact with the im rese-ion cylinder it is partially rototed t ercby, together with the rock shaft, to the osition of Fig. 2, owing to the rotation cip the cylinder in the direction ofthe arrow in the gute. This movement is com` linder by connections between the rock slaft 22 and the hand lever 14, comprising un arm 23 fixed -cylinden to the roch shaft, and u link 2t coimecting this arm with the hand lever. Throufgh the operation of this mechanism the trans er cylindelis thrown out by the action of the friction member.

The friction member is shrown into o ration by raising the rock shaft 22 throng 1 the action of a trcndlu. The rock shaft is journaled in u sleeve on a bclhcrank lever 26 which is pivotecl at 2T upon the frame 1. A horizontal arm 2S on the lever carries a iv oted hisr 29, which receives a slidin rod 31 pvoted at its lower end 30 to a tica e lever 32 pivoted on the frame l. Lock nuts 33 0n the upper end of the rod 3l confine a coinpresion swing 3i bean-ii 29. A co ar 36 fixed to t 1e rod limits the expansion of the s ring. A tension s ring 35 connects the en of the arm 28 wit the ireadle lover, being connected with the latter nt a point more distant from thc pivotal support of the treadle lever than the pivotal connection of the rod 31, so that it has a differential action. tending to hold the treadlc lever and the arm 2S in raised position, with the friction member ont of contact with the The upward movement of the tre-.idle lever is limited by the en agement of its rear end 3T with an adjustab e stop 3S on the frame 1.

To pro rlyr coordinate the time of operation of t e throw-out mechanism with that of the printing couple the 'throw-ont mechanism 1s provided with a controllin device which prevents its operation, w en the treadle 1s depressed, until the proper moment in the operation of the press. To this end an arm 39 on the bell-crank lever 26 carries a cam roll 40 adapted to engage a cam Q fixed on a. shaft 42 journaled in the frame l. The shaft is rotated by gears 43 and 44 (Fi 4) connecting it with the actuatin mec nism of the imprmp'on cylinder. he cam roll is normally elevated slightly above the cam, so as to be out of contact therewith. Then the ltreat'lle is de-` pressed the springs 34 and 35 tend to Vdethe arm 28 and throw the 'friction member 19 into operation. The en y ement of the cam roll with the` suracejo t Ae'cam prevents this operation,` however, until-a4 def( pression 45 in the'cam surface permits Vthe cam roll to fal1 and the bell-crank lever tof rotate. This depression is so locateduas to permit this action' to occur gust the completion of animpression bythe e, andV theY lengthof the 1s against the lng such that the cam raises the cam roll and throws the friction member out ofoperation after the latter has remained long enough in contact with the impression cylinder to complete its o ration.

After t o above described operation the treadle is released by the operator and the transfer cylinder remains in the t row-out position until its operation is restored by the hand lever 14.

It is obvious that various modifications may be made in the illustrated embodiment of my invention without departure from the nature and scope of the invention as dened in the following claims.

I claim 1. A throw-out mechanism for printing presses comprising, in combination with a printing couple and its actuating mechanism, manually-operable means for throwin a member of the couEIe into operation, an means connected wit and actuated by said actnatin mechanism and acting under conrol of t e operator to throw ont said mem- 2. A throw-out mechanism for printing presses comprising, in combination with a rinting couple, manually-operable means or throwing in one member of the couple, and power-actuated means acting, `under control of the operator, in timed eo y tion with the printing couple, to throw out said member. y

3. A throwont mechanism for ,printing presses comprising,l in combination with a printin couple having' a'rotary member, means or throwing out one member of the couple, actuated bye-engagement of a friction member Vvwith said rotary member. f .t

4. A throw-ont mechanism for printing presses comprism in combination with a,

printing couple aving a rotary member, means for throwing ont oneimember of ,the couple, a friction member forV actnatin'g 'said meDS drted toengege and be actuated by sai cam-controlledlrneansforftiming theo `jera-Y tion of] the-,friction member unaccor ance rotary-frnember, ia jt'readle for throvrV j ing the friction memberfintojoperationand los

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