US807191A - Printing and similar machinery. - Google Patents

Description

No. 807,191. PATENTED DEC. 12, 1905. T. A. NELSON & J. MURRAY. PRINTING AND SIMILAR MACHINERY.

APPLIGATION FILED JULY 15, 1905.

2 SHEETS-SHEET'L No. 807,191. PATENTED DEC. 12, 1905. T. A. NELSON & J. MURRAY.

PRINTING AND SIMILAR MACHINERY. I

APPLIOATION FILED JULY 15,1906.

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PRINTING AND SIMILAR MACHINERY.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed July 15,1905. Serial No. 269,775.

To all whmn it may concern:

Be it known that we, THOMAS ARTHUR,

NELSON, of the firm of Thomas Nelson & Sons, printers and publishers, and JOHN MURRAY, engineer, subjects of the King of Great Britain, and residents of Parkside WVorks, Dalkeith Road, Edinburgh, Scotland, have invented new and useful Improvements Relating to Printing and Similar Machinery, of which the following is a specification.

The present invention has for its object the more correct adjustment or register of sheets of paper or other material when being fed into printing, folding, or other similar machines.

In machines to which this improvement applies there is a feeding-table, and there are front-lay guides, and there is also an end lay or side lay, with a gripper or jaws capable of being opened and closed. In the said machines as they are operated at present a sheet of paper or other material is placed on the feeding-table with its front edgein contact with the front-lay guides. The end lay advances laterally across the feeding-table with its gripper open and pushes the sheet in front of it a short distance across the feed- -closed on the edge of the sheet, but before it has begun to move backward into the home position, the front-lay guide which is nearer to the end lay is removed from contact with the front edge of the sheet. As the end lay retires into the home position the front edge of the sheet is then resting against one frontlay guide only. When the end lay reaches the home position, the remaining front-lay guide is withdrawn from contact with the edge of the sheet, and the end-lay gripper releases its hold in the usual way, and the sllileet is then ready to advance into the ma- 0 me.

The present improvements are illustrated in the accompanying drawings, whereof Figure 1 is a plan view, and Fig. 2 afront elevation, Fig. 3 being a side elevation of the cam for operating the front lays. a is a feeding-table, (shown only in Fig. 1,) and b is a sheet placed thereon.

c is the end lay and gripper, which does not differ in construction and arrangement from the end or side lays usually employed.

(1 and d are the front lays carried by the rocking shaft 6 e, which is divided transversely within the sleeve f. The portion 6 of the rocking shaft is pinned fast to the sleeve f, and the portion 6 is also pinned to it, but loosely, so that the portion e and sleeve can rotate to a limited extent Without turning the portion e. The' shaft is rocked by means of the armg, carrying the bowl 7:, which bowl rides on the edge of the cam 'i. The cam ihas two lifts 1 2 and,2 3 4. 1 2 rocks the shaft 6 sufliciently to raise the front lay d. The lift 2 3 4 of the cam, however, rocks still further the portion a and sleeve f, by which means the portion 0 is also rocked, so that the lay d is thereby raised.

7' and 7c are springs for bringing the shaft 6 e and lays d d back to their normal position. I

The operation of the mechanism is as follows: A sheet I) having been placed on the feeding-table in contact with the front lays, the end lay a is moved forward with open jaws and pushes the sheet from the dotted position to the drawn position shown. The jaws then close in the ordinary manner on the sheet; but before the latter is drawn back the front lay dis raised by the cam, as above explained. The backward movement of the lay a .then takes place, and the sheet is drawn into the home position with its edge in contact with the lay d only. When the sheet is at rest, the lay d is also raised, and the sheet is ready to proceed onward to the rinting or other machine.

It will be found that the use of one front lay only when drawing the sheet into the home position greatly facilitates accurate register. The ordinary adjustments of the lays are provided.

What we claim, and desire to secure by Letters Patent of the United States, is-- In printing and similar machinery means whereby an improved register of the sheets is effected, such means comprising mechanism for removing the front lays one before the other, mechanism for moving the sheet back and forth, and means for so timing the movements that one lay is removed before and one after the sheet is moved into the home position, substantially as set forth.

' In testimony whereof We have signed our names to this specification in the presence of [0 two subscribing Witnesses.

THOMAS A. NELSON. JOHN MURRAY.

Witnesses:

ROBERT F. SooTT, FREDERICK PIATT.

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