US812735A - Feeding mechanism for printing-machines. - Google Patents

Description

PATENTBD FEB.13, 1906.

E, 0. GA'MMETEE. FEEDING MECHANISM FOR PRINTING MACHINES.

APPLIOATION FILED MAR .3.1904. v I s SHEETS-SHEET 1.

Wi-neJo'eJ.

PATENTED FEB. 13, 1906.

QM E N M G A M G N H RN I M R m G .M GS M HA H G E M G N I D E E n APPLICATION FILED MAR.3.1904.

3 SHEETS-SHEET 2.

PATENTED FEB. 13, 1906.

H. G. GAMMETER.

FEEDING MECHANISM FOR PRINTING MACHINES.

APPLICATION FILED MAB.3.1904.

3 SHEETS-SHEET 3.

WY-0165566.. I msuw WW1? letter-heads, for example.

c plan :with the printing-drum and its-driving UNITED STATES PATENT OFFICE.

HARRY C. GAMMETER, OF CLEVELAND, OHIO, ASSIGNOR TO THE AMERICAN MULTIGRAPH COMPANY, OF CLEVELAND, OHIO A CORPORATION OF OHIO.

Specification of Letters Patent.

Patented Feb. 13, 1906.

Original application filed March 7,1903, Serial No. 146,651. Divided and this application filed March 3, 1904. Serial No. 196,288-

To all whom it may concern:

Be it knownthat I, HARRY O. GAMMETER, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and 5 State of Ohio, have invented a certain new and useful Improvement in Feeding Mechanism for Printing-Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying IO drawings.

My application, Serial No. 146,651, filed March 7, 1903, shows a duplicating or printing machine adapted to print in imitatlon of a type-writer on sheets .of paper, as a letter-head, for example. That machine com-.

prises a sup ly-drum' for the type, a printingdrum; mec anism for transferring the selected type from the supplydrum to the gyprintin -drum, an impression-platen, and

zqg'lmeans or-feeding the paper between the imgy'pression-platon and. printing-drum as the atter is rotated to print. The present application is a division of the ap lication referred l to and relates to the means flir feeding the in- 2 dividual sheets of paper, the object being to provide simple and efficient feeding. means which shall be readily adjustable to vary the time of beginning the aper-feed. This adjustment provides for caving a space at the 0' top of the sheet before the printing from my machine begins, which space may be varied as desired to accomodate itself to different The invention may be most conveniently 3 5 summarized as consistin of the means employed for'attaining the above object, as hereinafter described and claimed.

The ,drawings clearly disclose the invention. The slip ly-drum for the t e and the trans- 0 fer a'nec anism, which w' be employed in conjunction with the printing-drum, are not shown, as they may be of any suitable form as, for example, that shown in my prior ap plioation referred to; Figure 1 herein is a side elevation of aprinting mechanism having my paper-feed. Fig. 2 is a vertical cross-section of Fig. 1. Fig. 3 is a vertical section substantially on the line "3 3 of Fig. 1 looking to the left. Fig. 4'is a mechanism removed. Referring by letters to the embodiment.

shown in the drawings, A represents any suitable frame.

B'is the rinting-drum, mounted on the shaft 6-, whidh is journaled in the frame. On this 1printing-drum are lon itudinal rails I), whic carry the type. Wit in an opening in the periphery of the drum are a pair of spools b b for the inking-ribbon, the ribbon (not show Passing intermediately around the drum, and thus over the type carried thereby. On the shaft b is a gear b, which meshes with agear c, secured on the hub of a crank C. The rotation. of this crank' thus rotates the printing-drum B.

J ournaled on a shaft (1, beneath the rintingdrum, is the im'ressionplaten D, fiaving a soft surface. T is laten carries on its end a gear (1, which mes es with a gear 6 on the periphery of the rinting-drum. Thus the printing-drum an the impression-platen are I rotated in unison, and if a er be fed to their 7 cooperating surfaces it 1 e drawn between them by their rotation and will be printedby the type on the rails band the surroundmg ribbon from the spools b '1). Now to feed the paper to the contactline of the-two drums at any desired position of the printingdrum is the-p ose 0 this invention. Toobers E and F, extending substantially the length of the printing-drum. The roller E is journaled at its ends in arms G, which'are pivoted to the side members of the frame A. Extending-downward these arms have projections g with slots opening downward, and in such slots take gudgeons extendingfrom the ends of the rollerF. Springs H, carried by the frame and pressing u ward on these gudgeons, tend to press the rdlls together. ournaled in the rearends g of the arms G is a third roller K, having a soft surface. This roller is pressed against the impressionlaten by springs g, extending upward from t e arms G, and set-screws L screwing through ears 0, carried by the frame and bearing) agamst such springs. A plate N or other ta leis held substantlallyin line with the meetin faces of the rollersE and F. Now if the roller be rotated inthe right direction pa er shoved toward the rollers E and F along tfie surface of the table N will be drawn between those rollers and its free edge will strike the surface of the platen 8o tain this result provide a pair of rubber roll- D, and if at the same time this platen be r0- tated in the proper direction such paper will be drawn between it and the soft roller K and will thence pass between the platen and the printing-drum. It will thus be seen that the time of feed of the pa er is regulated by the time when the roller begins to rotate, for the rotation of this roller draws the pa er between itself and the roller F, and therea er the impression-platen and the roller K and then the printing drum and impressionlaten continue the feed until the paper is ally delivered in printed condition on the receiving-table P. To cause the rotation of the roller E, which initiates the feed, I r0- vide on the end of this roller a gear e, w 'ch meshes with a pinion Q, carried by an upwardly-extending lug g of one of the arms G'. Around the printing-drum is a flat smooth portion 6" beyond the rails b, and around this smooth portion passes a band R, carrying a short rack 1'. In the rotation of the printing-drum this rack r engages the pinion Q, and this rotates the roller E to feed the paper, as heretofore stated. Now to vary the time of beginnin the feed I sim I change the osition of t e rack r on the printingdrum B, an s is accomplished by removing the set-screw 1*, which holds the band R in position, shifting the band and'relocking it. Fig. 3 shows a series of threaded holes '1) to receive the screw 1* in various positions of the band R. By this sim le means the time of beginning the feed wit reference to the rotation of the drum B may be regulated to always provide for the existing printing at the head of the letter, whatever its amount. As shown in the drawings, the holes I) may be so placed as to give a wide range of adjustment to the segment-a range much greater than the length of the segment.

Having described my invention, I claim- 1. The combination of a printing-drum, an impression-platen therefor, a feed-initiating device adjustably mounted on the-drum, feeding mechanism including a roller mounted on pivoted arms and adapted to be controlled by said device, and a spring constraining one of said arms, substantially as described.

2. The combination of a printing-drum, an impression-platen therefor, a segment carried by the drum, feeding mechanism including a roller mounted on pivoted arms, a spring con-- straining said arms, and a pinion carried by one of the arms and geared with said roller and adapted to be engaged by said segment, substantially as described.

3. The combinationof a printing-drum, an impression-platen therefor, rollers for feeding paper between the printing-drum and platen, a band passing around the periphery of said drum, a member carried by said band for initiating the operation of :the feed, and means chine, s rings carried b carried y'the'frame an adjustably bearin i N\ .45. l for adjusting said bandthrolighb iit agreater gaging said gear, substantially as described.

a 5. In .a'printing-machine, the combination of a printing-drum, an impression-platen, a pair of arms .pivoted to the frame of the masaid arms, screws against said springs, a roller carried by sai armszaznd forced by said s rings against the impression-platen, and ot er rollers carried by said armsfor feeding. the paper to the s ace between ithe'roller'first mentioned and t e impression-platen, substantially as described.

6. In a printing-machine, the combination of aprinting-drum, an impression-platen, a feed-roller cooperating with the platen, a air of armscarryin said feed-roller, another eed-roller journale in said arms, a gear .on said last-mentioned "feed-roller, a rack -.on the printing-drum adapted to drive said .gear, and the third 'feed-rollerzcarried bysaid arms and spring-pressed toward the feed-roller which carries the gear, substantially :as described.

7. In a printing-machine, the combination .-of a printmg-drum, an impression-platen, a

feed-roller adapted :to bear. .on said platen,

a pair .of pivoted in w ch 'theends of said feed-rollers are journaled,,a second feedroller journaled in said arms, slotted extensions carried by said arms adjacent :to the second feed-roller, a third feed-roller having gudgeons taking into such slots, springs bearing on said gudgeons to force .the said third feed-roller toward the second feed-roller, and springs bearing'on said-arms toforce the first feed-roller toward the platen, substantially as described.

8. In a printing-machine, ,thecombination of a printin -drum, 'animpressionlaten,-a feed-roller adapted to bear upon sai platen, a pair .of arms ilLWhiCh the ends of said feedroller are j ournaled, a second feed-roller j ournaled in said arms, slotted extensions carried by said arms adjacent to the second feedroller, a third feed-roller taking into such slots, and a rackadjustably carried by the printing-drum and adapted to engage gearing connected with said second feed-roller, substantially as described.

9. Ina printing-machine, the combination Witnesses ression-platen, a cent to the roller lirsfimentioned, substantially as described. IO

. In testimony whereof I hereunto affix my signature in the recence of two witnesses.

RRY O. GAMIIETER.

ALBERT 'H. BATEs,

L. THURSTON.

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