US551747A

US551747A - Machine for feeding and registering sheets of paper

Info

Publication number: US551747A
Authority: US
Publication date: 1895-12-17
Anticipated expiration: 1912-12-17

Description

(No Model.) 2 Sheets-Sheet 1.

- E. DUMMER. MAGHINE FOR'FBBDING AND REGISTERING SHEET$ OF PAPER.

Patented Dec. 17, 1895'.

4 INVENTU.

ANDREW EGRAHAM. PNUTOimIQWASMNGTDNfl C (No Model.) 2 Sheets-Sheet 2.

' E. DUMMER. v MACHINE FOR FEEDING AND REGISTERING SHEETS OF PAPER. No. 551,747. Patented Dec. 17, 1895 WA -gsszs: INVENTEIRI ANDREW EGHAHAM. PHUTo-UTKD.WASIHN5TON.D C.

UNITED STATES. PATENT OFFIcE.

EDXVARD DUMMER, OF AUBURNDALE, MASSACHUSETTS, ASSIGNOR TO THE DUMMER PAPER FEEDER COMPANY, OF PORTLAND, MAINE.

MACHINE FOR FEEDING AND REGISTERING SHEETS OF PAPER.

SPECIFICATIONfOrming part of Letters Patent N 0. 551,747, dated December 17, 1895. Application filed July 9, 1894. Serial No. 5163881 (No model.)

that the edge at the front and the edge at a side of the sheet will be at gages, as required, for instance, in a printing-machine, the inven tion consisting in instruments having a fric tion-surface (which I herein term wipers in combination with said support and gages, and with presser-feet, as hereinafter set forth, and specifically pointed out in the claims.

In the drawings, two sheets, Figure 1 is a vertical section, and Fig. 2 aplan, of so much of sheet-registering mechanism and a printing-machine as is sufficient to illustrate my invention. Figs. 3, 4, 5, and 0 show details drawn on a larger scale.

The feed-board A, impression cylinder B, gages a and grippers b may be those of an ordinary printing-machine. A sheet is seized by a lower roller C and-upper rollers D and carried by them and a belt 0 and rollers or balls cl onto and along the feed-board A until the front edge of the sheet is approximately near the gages a. Supported by suitable bearings is a transverse shaft E driven by a sprocketwheel and a chain, as shown. These bearings are on stands F, secured to the printingmachine. On the shaft E are disks or carriers G, in which are adjustably secured projections or wipers 6, preferably flexible and having a friction-surface, their adjustment with reference inthe carriers being by screwing the same in the carriers, as illustrated.-

These carriers revolve'with the shaft E, but are adjustable on the shaft lengthwise by means of arms f, which may be slid and secured by means of the thumb-screws shown in any required position on fixed transverse rods g, held in position by the stands E. On the shaft E are bevelgears h, which revolve with the shaft, but may be slid lengthwise thereof by means of arms H, which may be slid on the rods g and secured by means of the thumb-screws shown in any desired position. Each of the arms H has bearings fora shaft'i at right angles to the shaft E. On each shaft 71 is a bevel-gear to engage with a corresponding gear h, and a disk or carrier j having a wiper it like a wiper e. Pivoted on a rod g is a presser-footl to move lengthwise on the rods 9 with'arms f and adjustable by means of the thumb-screw shown to and from the corresponding gagea. Each presserfoot Z may bear on the support for the sheet or on the sheet between said support and presser-foot, near the gage. Provision is made for a wiper eto come in contact with a sheet when between a presser-foot Z and the sheet-support.

On each carrier G is a cam which, bymeans of an arm m, secured to the corresponding presser-foot, raises and lowers the presserfoot as required. Each arm H has a projection a, to which is pivoted a side gage 0, this gage having projection 19, to which is pivoted a presser-foot q. Provision is made whereby a wiper kmay come into contact with a sheet when between the corresponding presser-foot q and the sheet-support. Each carrier j has a cam fixed thereto to raise and lower by means of an arm 0" both the corresponding gage o and presser-foot, as required.

A sheet shaving been carried so that its front edge is approximately near to the front gages a, and a side edge near to a side gage 0, one of the wipers e on each of the carrriers G will come into contact with the sheet and carry the corresponding front edge of the sheet closely to the gage at opposite thereto. Each of the presser-feet Z being down and resting by gravity on the sheet while a wiper e is operating on the sheet, wrinkling or curling of the sheet by the wiper will be prevented. After action on the sheet of one of each pair of wipers e, the presser-feetl are lifted by the cams on carriers G. Thereupon the cam on a carrier j allows a side gage o to drop onto the feed-board and a presser-foot q to drop onto the sheet and rest thereon. A side wiper then carries the sheet until the side edge meets the gage o. Thereafter the other one of each pair of wipers e acts on the sheet, the presser-feet being allowed to again rest on the sheet, so as to insure that the front edge of the sheet will be at the gages a when the grippers Z) seize the sheet. This repetition of action on the sheet to press the front edge against the gages a is desirable, since the sheet is apt to be so disturbed in its movement sidewise to meet the side gage as not to be in exact register with the front gages. There being an arm II bearing aside gage and a presser-foot for each side of a sheet, registering at either side of the sheet may be done at will. ()n that side at which registering is required the corresponding arm H is so set as to bring the gage 0 into the position required, and the gage is set free to drop as illustrated in Fig. 3, while the other arm If may be slid so as to bring the corresponding presser-foot and gage out of the way of the sheet, the gage and presscr-foot being held up by means of a latch t, and the wiper removed, as illustrated by Fig. 6.

The device for registering herein described is adapted to assist in hand-feeding, the carrier to deliver the sheet onto and convey it down, the feed-board being dispensed with. If a sheet be placed by hand approximately near to the front and side gages, the wipers, or the wipers together with the presser-feet, will cause the sheet to meet the gages as desired, the ordinary accurate adjustment of the sheet by hand not being required.

In certain cases-as, for instance, when the sheets are of quite heavy paper-the presserfeet at the front and side of the sheet may be, as to all or part of them, dispensed with. The presser-feet are important, however, in many cases, and it is also desirable that the presserfeet rest on or press the sheet between the same and the support, so that the sheet, especially when quite thin, will not bend up or wrinkle when the edges thereof are forced by the wipers against the gages. Lifting the side gage as well as the presser-foot thereat provides for a free passage of the sheet to the front gages, even though the sheet, when passing the side gage, is somewhat angular with reference to the support and front gages. If the side gage was down and the edge of the sheet should touch the gage as the sheet moved forward, such friction of the edge against the gage might cause the sheet to swing so as not to be brought into accurate register. Moreover, a sheet (when in position somewhat angular with reference to the gages) may so pass the side gage that the corner of the sheet may actually pass under the raised side gage, and yet that part of the edge of the sheet which is opposite to the side gage when the front edge has reached approximately near the front gages will be within and away from under the side gage. 'lhough the sheet (before bcin g acted on by the wipers) be somewhat angular with reference to the gages, the front edge of the sheet will be brought by the wipers to the gages owing to the flexibility of the wipers, which permits the front edge of the sheet to slide against either gage the slight distance required to cause the edge to meet both front gages.

I claim as my invention- 1. In combination with front-gages and a support for a sheet, wipers to engage successively with the sheet to move the sheet to meet said front gages, a sidc-gage, and a wiper to engage with the sheet and move the sheet to meet said side-gage at a time between the successive operations on the sheet of the wipers for the front-gages, substantially as set forth.

2. The combination with front-gages and a support for a sheet and a carrier to move the sheet forward of a side-gage, a wiper to en.- gage with the sheet and cause the sheet to meet said side-gage, and a device for lifting said side-gage while the sheet is moving forward, substantially as and for the purpose specified.

3. The combination with a sheet-supp0rt, front-gages and a device for moving the sheet to meet said front-gages, of a side gage, a presser-foot, a wiper to move the sheet under the presser-foot to meet the side-gage, and a device for lifting said presser-foot and sidegage while the sheet is moving forward, substantially as and for the purpose set forth.

4:. The combination. of a sheet-support, front-gages, a side-gage, a transverse shaft, wipers and carriers therefor on said shaft, a transverse, stationary rod, presser-l'eet adjustable on saidrod, a shaft supported at right angles and geared to the transverse shaft and provided with a wiper and holder therefor, a presser-foot at said side-gage, and cams on said shafts to lift said presser-feet and the side-gage, substantially as specified.

5. In sheet-registering mechanism and in combination with front-gages, a side-gage and means for moving a sheet to meet said gages, a device for suitably lifting the side-gage so that the side-edge of the sheet or corner formed by the side and front-edge of the sheet will not strike or rub against the side-gage to displace the sheet while the sheet is moving forward to meet the front-gages, substantially as specified.

EDWARD DUMME'H.

\Vitnesses:

EDWARD W YMAN, FRED 'W'. MoAnDLn.

IIO