US9711A - Registering apparatus for printing-presses - Google Patents

Description

UNITED sTATEs PATENT oEEIoE.

JOHN W. RICHARDS, OF HOBOKEN, NEW JERSEY.

REGISTERING APPARATUS FOR PRINTING-PRESSES.

Specification of Letters Patent No. 9,711, dated May 10, 1853.

To all Lc/icm i may concern Be it known that I, JOHN W. RICHARDS, of Hoboken, in the county of Bergen and State of New Jersey, have invented, made, and applied to use certain new and useful Improvements in Apparatus for Registering in Printing-Machines; and I do hereby declar'e that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawing, making part of this specification, wherein- Figure 1, is a plan. Fig. 2, is a vertical section of my improved apparatus. The other figures are separately referred to, and the like marks of reference designate vthe same parts in all the figures.

In ordinary power printing presses the sheet of paper in receiving the impression on one side receives also a po-int mark (or other point as the corner of an inclosing border) by which the sheet is registered in receiving the impression on the other side. The position to which these registering points on the sheet are to be placed in order that the printing press may take it by means of the fingers and carry it correctly to receive the second impression is designated by means of points that project through the feed board of the press, which points have to be adjusted so that the registering points on the sheet being brought over these points determines the correct position of the sheet, and just before the sheet is drawn off by the fingers of the press so as to be printed these points are withdrawn beneath the surface of the feed board by means of a cam or similar apparatus attached to the cylinder of the press. It will now be evident that for each change of position of the registering points the feeding board has to have a new hole bored through it to allow the point to pass up, which operation in the course of time makes the feed board like a honey comb, rendering its surface very uneven and liable to catch the edges and corners of the paper, causing great difficulty in feeding the press.

The object of my invention is to overcome this difficulty and permit of the registering points being passed through the feed board at any point within a given area. This I accomplish by means of a circular plate of a size to include within its circumference all the area necessary for registering with a given sized press. I introduce one of these plates on each side of the feed board near its lower edge and set them into a circular rabbet iush with the surface of the feeding board, and each plate has a radial slot passing through it and running across the plate a little farther than the center thereof. It will be seen that by rotating this plate its radial slot passes over the whole area of the plate, so that an opening at any posit-ion can be obtained within the circle for the passage of the registering point.

In the accompanying drawing a, represents the impression cylinder of an ordinary power printing press, the other parts of the press not being represented, being unnecessary.

, is the feed board.

c, is a cam represented in dotted lines, which by a rod 1, actuates the rock shaft 2, and by the arm (l, raises the point 3, through the feed board, as now usual. The point 3, being adjustable on the arm d, by a set screw 4t, and also the arm ,can be adjusted along on the shaft 2.

e, is a circular plate (in which my improvement consists) let in flush with the face of the feed board and resting on a rabbet formed in the board or on a separate fixed ring, as shown at f, Figs. 1 and 3.

14, is the slot in the plate and 5, is a clamp bar and 6, a screw by which the plate is secured in place.

From the previous remarks it will be seen that the plate can be rotated, on loosening the screw 6, until the slot includes the position required for the point, and then the point can be adjusted to pass through the slot at that position.

Fig. 3 is a vertical section and Fig. et is a plan of an improved point arm which I prefer to use in connection with my circular slotted plate, as it can be adjusted more readily than the common arm. In this the arm d, from the rock shaft is furnished with a fork at its end entering a groove around a roller 8, on the lower end of a perpendicular spindle 9, supported by a slide 10, that is connected by a fork to the under side of the plate e, between which forked part the upper end of the spindle 9, is attached to an arm 11, carrying the registering point 12, attached thereto by a supporting block and setscrew 13. The plate e, is provided with the clamping bar and screw as before and it will be seen that in turning the plate c, the roller is also turned in the fork 7, so that the slot can be brought to any desired radial line, and the arm 11, being directly beneath the slot permits of the registering point being slid along to the required position in the slot. It will be seen that the set screw 13,

and point l2, not being on the same line, as

shown in Fig. 2, the point can be brought directly over the end of the spindle 9, and if the point is required at the edge of the circle it can be slid o the arm and replaced the other end irst.

It will be evident that other mechanical means than the arm d, may be used to give a vertical motion at the correct time to the spindle 9.

I do not claim the rock shaft or point arm d, and point 3, as these are Well known, but

Vhat I desire to secure by Letters Patent 1s 1. I claim the circular slotted plate e, let

JOHN W. RICHARDS.

Witnesses:

LEMUEL W. SERRELL, WM. R. WEMPLE.

Images