US1193046A - Irving i - Google Patents

Description

I. F- NILES. TRANSFER PRESS. APPLICATION FILED 1150.4. 1913..

Patented Aug. 1, 1916.

2 SHEETS-SHEET I;

wmuzsscs;

INVENTOR.

Pat nted Au 1, 191a 2 SHEETS SHEET 2- x ill;

wl'rms ssszs f I N VENTOR;

193,046; l Applicationfiled mem er 4, 191s. 'seria1m. 804,593;

citizen .of the United States, residing at NEW Yonx, 1'\T .'Y;,' A oonronnrionon NEW YOBK.

Bei known thateL' 1mm F. Nines; a-

" Plainfield, county of Union, and State of New Jersey; have inventedcertainnew and;

useful Improvements l .F;-ransfer-Presses; r

fully described'andvrepresented in the fol? it lowing specification and the accompanying s1de of the machine partly brokenaway and ace.

drawings; forming'a partfof :the same; This invention-relates" to certam improvenielitsin'transfenpresses :ingwhich there are p I 1 its return or non-impression" stroke and has been lifted so as to clear thebedfand Fig. 5 use. detachedfragmentary plan view of the gripper mechanism for holding' the work in position. on the bed of-the machine. 4

Referring nowto the drawings, a machine [constructed-in accordance with-the inventionwill- .include a transfer, cylinder 1; yThis g'; t 'ransfer-=cylinder in the particular machine;

employed a transferiiro l or-cylindergpro1 Vid'ed with .a suitable transfer; fsurface, a

plateesupporting-wbedg;',and 1awork supporting; bed; 7 the{ transfergcylinder passing suc v cessively. over-{these beds totake up a; de-

sign-from the; plate and transfer itto the.

work, the machine, beingso constructed that the cylinder iszout of contact with; the beds on its returner non-impression stroke; This type. of press is particularly ada tedFfor; f I printing :on qheav'y substances,; j-as timetal,

glass and the like j-but' it" may be employed,

ifdesiredfor iprinti'n'gon paper; Fi'tfbein'g, es- 25 a a. j r

' iii-"taking proofs of'work whichis to b'ef;

ri'nted from a stone or.'like*-printingf$ur:

With presses-of thi'sltype', however,}. when used for printing ontpaper, difficultyif ciallyusefu when used .imsuch ap' ity has been found in keeping 'thework-inpIfOper-positionvon theii'work.supportinglbed while the'design is being transferred'to 1t;

It is the especial-object oftlie -inyentionlto? provide-is means for securely positioning th provideanimproved 1constru'ction by which the cylinderwill-be-caused to clearthe beds during its return or non-impression stroke-1 Y Withtheseand other objects not specifically referred to in view, 'th'e" invention ,re-

. 1 3 1 BANsFERiIfRESS- 1 tudinal seetion of the construction shownin F g. l, the transfer cylinder being omitted;

ssr'eno'iz; To 3. nonnnn oo.', or,

:Patented Aug. 151 916.

Fig, 3 is an end elevation ofthe construc-' tion shown in Fig. 1, a certain partsbeing broken away and certain parts being shown in section, the view showing-the cylinder in the posltlon it assumes when on its impression stroke; Fig. 4 1s, a. similarview of one partly in section; showing'theiparts in the posit1onsassumed when the cylinder is oned by means of a usual tension roll 4. v

The cylinder 1 is reciprocated successively over a late-supporting bed-5 and a worksupport ng-bed 6, which are supported in the frame of the-machine so as tobe capable :'"Twrticala adjustment, to accommodate difl 'erent kinds of work. The 'means for supporting thebeds -and for efle'cting this ad ustment 'may-be somewhat varied, but in .the particularvconstruction illustrated there are provided cross-frames 7 8, at each end of thema'chine, and a cross frame -9 -in the "central portion thereof, these frames being supported onprojections 10 secured on the frame of the machine. a The beds are pro vided' with ears 11 through whichy are threadedbolts 12, these bolts resting, onthe flanges of the cross frames", Thebedsare thus'supported by these boltsyanfd by adjusting the bolts the bedsmay be raised and;

plates. or stones of various thicknesses and' suitable hand wheel 2 by'which-the cylinder '1 may" be ,reciprocated over the beds This, cylinder 1 isIprovided with the usual transfer-surface, which may be ablanket 3, suit- 'ably-'j' secured to the cylinder-,1 and ;'capable "of'having its tension on the cylinder adjust lowered as-desired. Theplate supporting bed is shown as supporting a stone 14,

though it will be understood that any other type of printing surface may be supported on the bed if desired or necessary.

Machines constructed in accordance with the invention will be provided with means whereby the cylinder and the beds may be caused to clear on the return or non-impression stroke of the cylinder, and these means, in the best constructions, will act to lift the cylinder sufliciently to' enable it to clear the beds. These cylinder lifting means will, furthermore, in machines embodying the invention in its best form, be arranged so as to be operated either by the press operator or automatically by the movement of the cylinder. While these means may be varied, in the best constructions and as illustrated the cylinder is provided at each of its ends with pinions 15 which mesh with racks 16 suitably secured as by bolts 17 to the side frame 18 of the machine, these racks being, as illustrated, located outside the side frames. While two pinions 15 and two racks 16 have been illustrated, it will be understood that if desired one of these pinions and the corresponding rack may be omitted. Inside the racks the cylinder is provided with a bearing surface 19 which, when the cylinder is on impression stroke, is adapted to run on the top edge of the side frames 18, as shown in Fig. 3, the cylinder when in this position being in printing relation with the beds. For lifting the cylinder so as to clear the beds, on its return or nonimpremion stroke, there are provided a pair of lifter bars 20 which are located between the side frames 18 and the racks 16, the securing bolts 17 passing through the bars which are suitably slotted, as shown at 21, to permit their lifting movement. The top edges of these lifter bars, when in their lowermost position, are preferably of the same height as the top edges of the frames 18 and contact with the outer portion of the bearing surface 19 of the cylinder when the cylinder is on its impression stroke. On the return stroke, the lifter bars are operated to raise or lift the cylinder to clear the beds, the cylinder when thus lifted being clear of the side frames and the rack and running during its return stroke on these lifter bars, the means employed for lifting these bars being of such character as to firmly hold the bars in raised position and form a track for the cylinder to run on on its return stroke. The means for raising these lifter bars may be of somewhat varied character, but they will be of such construction preferably that they may be operated either by the press operator or automatically by the movement of the cylinder. In the construction illustrated, there is provided a pair of crank arms 22, 23, pivoted on suitable studs 24 in the frame of the machine. These crank arms are connected at one end by a bar 25 secured ther to and at their other ends connect through links 26 and arms 27 with operating fingers 28 pivoted at 29 in the frame of the machine. These crank arms are provided with notched or recessed portions in which seat pins 30, the other ends of these pins taking into suitable notches in the underside of the lifter bar 20 before referred to. This arrangement of cranks and pins is duplicated on the other side of the machine and forms in effect a number of toggles fivhich when straightened out operate to raise the lifter bars and hold the same firmly in elevated or raised position until the toggles are broken, thus forming a firm track for the cylinder to travel on on its return or non-impression stroke.

In the operation of the construction so far described the operating fingers 28 are arranged to be in the path of the bearing surfaces 19 of the cylinder before referred to, and are struck by the cylinder at each end of its traverse over the bed, the cylinder thus automatically operating the lifter bars to cause them to lift the cylinder clear of the beds at the end of the impression stroke, and at the end of the return or non-impression stroke the 7 cylinder likewise acts through the other operating finger tobreak the toggle, thus causing the lifter bars to be depressed and the cylinder brought into printing relation with the beds. i

It may be desirable in some instances to operate the lifter bars by means operable by the pressman, and one such means is provided by the invention. In the particular construction illustrated there is provided another crank 31 pivoted at 32 in the frame of the machine, one arm of which is connected to the bar 25 before referred to, the other arm of which isconnected to a link 33 pivoted on a stud 34 carried on a foot treadle 35 pivoted on a rockshaft 36 suitably journaled in the frame of the machine. The crank 31 may be, like the cranks 22, 23, before referred to, notched or recessed to take one end of a pin 37, the other end of which seats in a notch in the underside of the lifter bar. This construction is duplicated on the other side of the machine,

and through it the operator may raise and lower the lifter bars from either side of the machine. If desired, other arms may be provided, such as arm 38, connected to rod 25, before referred to, and recessed t take pin 39, this pin taking into a recess 1n the underside of the lifter bar, this construction i onduring its return or non-impression stroke. Furthermore, bythe arrangement shown in which the racks arelocated outside the lifter bars, these racks are readily accessible and may be readilygotten at to be cleaned. Y Y

To prevent endwise. displacement of the cylinder and tokee'p it in position during its returnstroke there maybe provided on the cylinder holding flanges 40, these, hold"- ing flanges being adapted to bear against the side frames 18 of the machine, as shown in Figs. 3 and 4.

Machines constructed in accordance with the invention will be provided with means forholding the work firmly in position while it is receiving the impression from the transfer cylinder. These positioning means may be of varying character, butin the-best constructions will be caused to seize or release the work by the movement of the cylinder. In the construction illustrated, these .hol'ding means are grippers 41 carried on a shaft 42 extending across, the machine.

While two gripper fingers have been shown,

it will be understood that asmany as desired may be employed. These grippers are arranged to be actuated to seize the work after it has been positioned on the bed and after-the cylinder has passed the bed onits return or'no'n-impression stroke and to release the work after the cylinder has completed its printing or impression These means may be varied, but in the construction illustrated may beefl'ected through the opcrating fingers 28 before referred" to. In the particular construction illustrated,-;the shaft 42 on which the gripper fingers are carried is supported in ears 43 secured by suitable bolts 44 to a cross bar 45 supported 1 in the cross frame 9, before referred to.

The bar 42 is rocked to move the'grippers in holding and releasing positions through an arm 46 and link 47 connected to anarm 48 on the rock shaft 36, before referred to, a spring 49 being provided, if desired, to

effect a .yielding movement of the parts With this construction it will be seen that when the cylinder has finished its return stroke and has moved the operating finger 28 at the left-hand end of the machine, themovement of this finger throughbar 25,

arm 31, link'33 and'treadle 35 has rocked the rock shaft 36 and caused thev grip ers to seize the work which has been place on the work bed. At the-end of the impression stroke, the-cylinder, contacting with the operating finger 28 at the other end of the machine, through theseconnections. causes the grippers to release. their hold on the work.v It will also be seen that by the con struction described, the grippers maybe also operated by the foottreadle.

While the invention has been shown and described in' its preferred formiit'iwill be understood that various changes in. the construction and arrangement of the various devices employed may be made without dewhen the cylinder is traveling in one direct1on, and work holding devicesloperatively connected with said means" for holding "the means for causing the cylinder and beds to 'be moved out of contact with each other work in position on the work supporting bed while the cylinder is operating on the work and releasing thle'work during the action of the cylinder.

2; In a transfer press, the combination with a transfer cylinder, of a plate supportingbed'. and a work supporting bed over which the cylinder travels successively;

means for causing the cylinder and beds to be moved out of contact with each other when the cylinder is traveling in one direction, and means brought .into operative position .by the cylinder, for holding the work on the work supporting bedwhilethe cylinder is operating onthe work.

3. In a transfer press, the combination witha transfer cylinder, of a plate supporting bed and a work supporting bed over which the cylinder travels successively,

means for causingthe cylinder and beds to be moved out of contact with each other when the cylinder is traveling in one direction, means for holdingthework in position' onv the work supporting bed while the cylinder is operating onthe work, and

means operated by the cylinder for causing. the holding means to seize andrelease the work.

4. In a transfer press, the combination with a transfer cylinder, of a plate supporting bed and a work supporting bed over which the cylinder travels. .successively, means for causing the cylinder and beds to be moved out of'contact with eachother when the cylinder is traveling in one direc j tion, grippers for holdingthe work in position on the work supporting bed while the cylinder is operating on the work, and means operated by the cylinder for causing the grippers to seize and release the work.

5. Ina transfer press, the combination with a transfer cylinder, of -a 'platesupporting bed and a work supporting bed over which the cylinder travels successively, means for causing. the cylinder and beds to be moved out of contact with each other when the cylinderis traveling in one direction, grippers for hoiding the work in posi- In testimony whereof, I have hereunto tion on the work supporting bed, a. rock set my hand, in the presence of two sub- 19 shaft for operating the grippers, fingers at scribing witnesses.

each end of the machine with which the 5 cylinder contacts, and connections between IRVING NILES' the fingers and the rock shaft for rockin Witnesses:

the latter, to cause the grippers to seize an Rrcrmno KELLY,

release the work.

HAROLD M. Tnmmomsr.

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