US990207A - Paper-feed mechanism. - Google Patents

Description

l H. C. GAMMETBR. vPAPER I 'EBD MEGHANISM. APPLIOATION FILED 00T. 9,1907.

`Patented Apr. 18, 1911.

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"UNTTED STATES PATENT onirica.

HARRY C. GAMMETER, 0F CLEVELAND, OHIO, ASSIGNOR TO THE AMERICAN MULTI- GRAPH COMPANY, OF CLEVELAND, OHIO, A CORPORATION vOIF OHIO.

Specification of Letters Patent.

)ateutcd Apr.`18, 1911.1

Original application filed October 22, 1906, Serial No. 339,909. Divided and this application filed October 9, 1907. Serial No. 396,571.

To all whom t may concern.'

Be it known that I, HARRY C. GAMMETER, a citizen of the United States, residing at Cleveland, inv the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Paper-Feed Mechanism, of which the `following is a full, clear, and exact description, reference being had to the accompanying drawings.

This invention relates to mechanism for feeding paper to printing presses, and pai-,

` ment herein shown.

Theinvention includes not only the arrangement of feed-controlling' cams, but the simple and efficient `lock therefor, as hereinafter more fully explained.

The invention may thus be most conven' iently summarized as comprising the combinati of parts described and set outas to their essential elements in the claims.-

In the drawings, Figure 1 is a 4vertical sec# tion through a multigraph embodying this invention. Fig. 2 is a side elevation of the left hand portion of such multigraph. Fig. 3 is an enlarged sectional elevation in a plane parallel with Fig. 1 and nearer the left hand end of the machine and looking from that end. Fig. 4 is a perspective view of the locking block, F1 5 a cross section through such block an through the .cam

rings, this section being taken in aradial plane, as indicated by the line 5-5 in Fig. 1.4

Fig. 6 is a section through the locking block in a plane parallelwith Fig. 1.

The multigraph shown in the drawings comprises the frame A carryingthe rotary drum B` and the under-runnin carry ylongitudinal `rows of inedividualjtype,

not shown. Mounted .in a-recess in the drum impression platenl). `.The frame and platen are geared together by gearsb Land d on these two members respectively.` ,Theframe is adapted to` crank `C furnishes nic-.ms for driving thedrum and platen.

To properly feed the paper -to the drum v and platen, I may provide the feeding rollers and 'paper stops which are shown and claimed in my Patent No. 846,992, issued March 12, 1907. Such is the mechanism herein shown, which consists of a continuous under-running feed roller l", gearedwith the platen, and a superimposed feed. roller G carried by pivoted arms, H and adapted to be held out of engagement with the roller F by means of a cam on the drum which cngages'a roller J on one of the arms I-I. A spring K tends to keep the two rollers in engagement. engagement, as shown in Fig. Lsuitable stop lVhen the rollers are out of i fingers L mounted on the rock shaft N are projected into the path of the paper, forming stops for it. allows -the roller G to descend, an arm IL on one of the arms H engages au arm L .on.

Vhen, however, the cam p the rock shaft N and'jthereby swings the fingers down out of the way, against the action of the spring M. j In my patent referredy to there is a Single cam carried bythe drum coperating with the roller J land controlling the feed. Such cam may be adjusted to deter- `mine the time when the feed rollers go into engagement, such action taking place when the cam clearsl the roller JV "With such mechanism, however, the feed rollers are always in action for a definite time. j

The 'present invention is designed toicontrol both the time of the beginning of the feed and its duration and to this end I mount two cams on the drum, side by side, either of which cams may act on the roller J so that the duration of the engagement may be varied. This construction will now be dcscribed.

On the surface of the drum adjacent to the gear Z) is a curved cylindrical surface surrounded by two rings P andP'. rings have formed on them corresponding cam projections p ,which are adapted to operatcI the roller J as stated. 'lhese cams are ,of the same extent, so `that when they are side by sidethe engagementof the roller is simplythat equal to the length of. one roj ection `79, whereas, when the rings are shi ted,

These the effective engagement is increased up to a maximum of twice the length of one of a cam j). The cam ring P is preferably rigidly held on the drum and the shifting is accomplished by movingthe ring P independently. To enable such movement to be conveniently made with a. suitable tool, as

a screw driver, I form a notch p in theside of this ring P, by which it may be ,engaged and shifted. l'

To conveniently lock the shiftable cam ring inany position, as well as to hold'the stationary ring against any shifting, I pro vide the following'mechanism. vMounted in a rectangular recess b in the end member of thewdrum is a block R which stands beneath Ithe-two cam rings. This'block is formed as shown in Fig. et, having a projection 1' on substantially half its upper surr face. This projection occupies a ,notch in the cam ring P, as shown in F1 surface of thebloclrbeneath the ring P is concentric with the surface on which the ring rides, so thatthat ring may be easily shifted. Lyingon the outer face of the block and Aalso projecting beneath it into the recess b is an L-shaped `plate Q. This plate may be, clamped against the block by a set screw S screwing into the block. Such.

bottom portion of the plate Q is slightly greater than the height' of the projection r. The result of this is that when the set screw is out andthe plate` removed, the block R drops'inwardly radially to the base of the recess b,..and this lowers the projection r so that it' clears the ring" Pandthe block may bedrawnoutof the recess laterally. Conversely, in installing the parts, it isonly necessary to insert the block R into therecess, elevate this block into position, insertl the lower portion ofthe plate Q beneath the block and turn -tlie set screw into position. The construction is thus extremel simple, while. it has. been4v found-'very e practice. l

Themechanismconstituting the subject of this invention is shown inconnection with other features of ther-multi aphin my ap;` plication No. 839,909,-filed of which the present application is a division.

I claim: 1. In a printing mechanism, the combination of a printing member, an impression platen coperating therewith, a gear on the lmember-*having a recess, a platen coperat- -lng therewith, a paper feeding mechanism frs. 5 and 6,v thereby preventing such ring shifting. The.

Whenever j ective in.

'means for clampingithe othe'rfring.y I

atomes, 190e, y

' printing member meshing with a gear connected with the platen, a paper feeding de vice adapted to feed paper to the-printing couple thus constituted, and overlapping cam` rings mounted side by side on the pe riphery of the printing member between the gear thereon, and the printing surface and adapted to adjustably control the paper feed.

2. The combination of a rotary print-ing therefor, a pair of cam rings carried on the periphery of the printing member side by side, and adjustable the one along the other 80 to vary the effective length of the cam, and means accessible in suchv recess to loclr the cam.

3. The combination of a printing member, a platen, a paper feeding mechanism, an ad-v justabley cam, for controlling the paper feed and comprising two cam rings side by side, one of which may be shifted with reference to the other to vary the'effective cam length,

and a block and set screwlfor locking the shiftable c'am ring.

4. The combination of a printing member, a platen, a paper feeding'mechanism', an adjustable camA carried by the printing member and comprising two cam members side 95 by side, one of which may be shifted with, reference to the other to vary the effective. cam length, and a block set into arecess in the 'printing member y and provided with' means for lockingthe shiftable cam member.

5. The combinationof a rotary printing drum, a rotary platen, a i aper feeding .mechanism, two cam rings .si e by Aside, surrounding the drum and one adapted to be shifted with reference to the other to lvary the effective cam length,` andj a block set into a recess in the. println drum and provided with a screw for locking the shiftable cam y l ring. I

6. The combination with a printing drum of two rings side by side thereon, one of which may be shifted with reference tothe other, and av clamping block and screw for the shiftable ring, having a projection engaging in a notch inthe other ring.

7. The combination with a printing drum y oftwo rings side by side thereon, :one of which maybe shifted with referenceto the other, a block setv intoa recess inzthe r'ingcarrying member and having .afprojectiom engagingina notchin-one ofthe rings,gan l y 8. `The combination with a rintingd'rum of two-rings .sidefby sideit ereon'one'ofl'- which may be -shifted with referencef to thoi other, a block set into a recess in the ringcarrying member and having a projection engaging in a notch in one of the rings and a set-screw screwing into said block for clamp ing the other ring.

' the other,

. in a notch in'one -v against thering I .not occupy, said set screw engaging said I. drum, of a pair of cam-rings peazo? The combination lof a rotary printing drum, two rings side by Aside thereon, one of which may be shifted with reference to the other, a block set into a'recess in the drum and having a projection engaging in a notch in one of into said ring. l v l 10. The combination with a printing drum of two ri-ngs side byI side thereon, one of which may` be shifted Awith reterence to a blockset into a recess beneath and having a' projectionengaging screwing into said block, and a plate onthe outer side of said block adapted to bear which the projection does the rings and a set screw screwing block for clamping the shiftable the rings plate. A

11.. The combination with a printing member, 'of a pair of rings mounted thereon, a

recess in the member beneath the rings, a block occupying such` recess and having a projection adapted to occupy a notch in the innermost ring, said recess being deep -enough to allow the block to descend to allow Y s'uch projection to timing, and means for ass beneath the other glling the space beneath the block to hold its projection in engagement with the corresponding ring.

12. The combination with a printing mounted therevon, a recess in the drum within the rings, a block occupying such recess and having a rojection adapted to occupy a notch in the arther ring, said recess being deep enough to a1low the block to descend to allow such l beneath the block and lies yand means for filling the space projection to pass beneath the other ring,

beneath the block to hold vits projectionin engagement with the correspondin comprising a plate which enters the space along the outside of the block. 13. The ber', of a pair of rings mounted thereon, a recess 1n the member beneath the rings,.a

block occupying such recess and having a rojection adaptedto occupy a notch'in the arther ring, said recessbeing dee enough to allow the block to descend to a ow vsuch projection to pass beneath the first ring, a

late which enters the space beneath the blockand lies along the outside of the block and adjacent ring, and a set screw screwing through the'outer portion of said plate into the block. l

- 14. The combination of a printing drum. an impression platen, a pair of paper fee Y,engaging one cam, an

the rings, av set screw f ingthe drum at one end,

ring, said means l combination-with a printing memrollers, arms for holding one' of said rollers out of contact with ried by one of said arms, cams relatively adjustable and carried by said drum and adapted to engage said last mentioned roller to govern engagement of the feed rollers, and a block set into the drum and a set screw for locking said cams.

15. The combination of a type carrying member having a recess, a pair of overlapping cams, a block occu ying said recess and a set screw on said block binding the other cam. d 16. The comlination ruin a pair o overlap ino` caml rin surrounding the same, a blocllr seated the drum and engaging-one cam ring, and a set screw on the block binding- `the other cani ring. 4

17. The combination of a rotar drum, a rotary platen, a aper fee ing mechanism, two cam rings si e bv side surroundand a clampin device occupying a recess in the printing um and binding said rings.

18. The combination of a pair of overlapping cams, a printing member carrying the same and having a recess, a block set into said recess, a distance piece between the block and one wall ofthe recess serving to hold the block in engagement with one of the cams, and means carried by the block for clamping the other cam.

19. The combination with a rotary rinting drum of a pair of members mounts side by side thereon, a block formed to en age one member, a set screw carried by the b ook formed to clamp the other member, and a distance piece adapted to hold the block in engagement with the member first men t-ioned, said distance piece being itself held in place by said set screw.

20. The combination with a rotary printing drum of two cam rings thereon, one .of them' having a notch, a block occu ying the notch, and means carried by the block clamping the other ring.

for l the other, a roller caru printing 21. The combination with a rotary print-I y ing drum of two cam rings thereon, one ofl them having a notch, a block occupying the notch, and a set screw screwing into the blockand serving to clam the otherring.

in testimony whereof, 1P signature in the presence of two witnesses.

HARRY o. GAMMETER.

Witnesses:

' ALBERT H. Barns,

BRENNAN B. Wns'r.

Copies of 'this patent may be obtained for ve cents each, by addressing the "Commissioner o! Patents.

Washington, ZD. C.

hereunto aiix 'my i

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