US87695A - Improvement in printing-press fly-frames - Google Patents

Description

UNITED STATES PATENT OEEICE.

THEODORE B. MEAD, OF BOSTON, MASSACHUSETTS, ASSIGNOR TO R. HOE df. OO., OF NEW YORK, N. Y.

IMP`ROVEMENT IN PRINTING-PRESS FLY-FRAM ES.

Specification forming part of Letters Patent No. 87,695, dated March 9, 1869.

To all whom 'it may concern:

Be it known that I, THEoDoEE H. MEAD, of Boston, in the county of Suffolk and State of' Massachusetts, have made a new and useful invention having reference to the Fly of' a Printing-Press; and I do hereby declare the same to be i'nlly described in the following specification and represented in the accompan yin g drawings, of' which- Figure l is atop View, Fig.2 an under-side view, Fig. 3 au end view, and Fig. 4 a verti cal section. of a y containing the said invention.

1n carrying out my improvement I provide each ot' the fingers which are connected with the iiy-frame with a series of blunt or rounded projections for a sheet of paper to rest and slide on when the iy may be in operation, and I construct each of the said fingers of a single piece of wire bent in the manner as represented in the drawings, so as to form it with such a series of' projections or bearings for the sheet of paper to rest on. Furthermore, I apply cach of the fingers to the fly-frame by a pivot at one end of' the arm and by a clamp or its equivalent near the other end of' the arm, in order that the arms may be adjusted so asto clear them from thetapes or tape-wheels of' the press when the fly may be in use. I also combine with the several fingers a mctallie electrical conductor, such being to convey away from them the electricity which, generated in the sheet of paper7 renders such liable to adhere to the fingers while the iiy may be in use.

In the drawings, Adenotes the frame ofthe fly, it being composed of two side bars, a. a, and two connecting-bars, b c.

B B B, duc., are the sheet-supporting fingers, each consisting of a piece of metallic wire bent so as to form blunt or rounded projections d d dd, arranged at, or about at, equal distances apart. Each of' the fingers B is pivoted to the bach bar of the [1y-frame, or extends through it and against a strip, O, ot' metal fixed to the under side ot' the said bar. W hen the iiy-frame is in use the said strip O should have a metallic chain or some other electrical conductor con tinued from it to the iioor or ground on which the press may rest, the same being to convey away the surplus electricity which is liable to be generated in the paper and cause it to adhere to the Wires or fingers of the y-frame. Each of such wires or fingers B passes be tween the front bar, c, of' the frame A and a clamp-bar, D, which rests on thewires, and is held down by means of'a series of clamp-screws, c, and nuts f. rIhe screws go through the bar c and between the several wires or fingers B,

fly-frame, would rest on, or about on, the entire underlying surface ot' each of' the bars. Thus the sheet of' paper, by being exposed to the action of so great a surface, was very apt to adhere to it, and would not freely slide on the fly, and the fiy would be liable to get more or less covered with printing-ink odset from the sheet, but by having the sheet rest on the blunt extremities of several small projections, instead of on continued surfaces, the y will operate to better advantage, and with little or no danger of adhesion of.' the paper to it and much less chance of inking the sheet.

I therefore make no claim to a y ot which each of' its sheet-supporting fingers is simply a straight bar or strip ot` wood or metal.

I claim as my invention the following-that is to say:

l. A printing-press fly having each of' its series ofl pa-per-snpportin g fingers provided or formed with a series of blunt or rounded projections for the sheet of paper to rest on and be discharged from while the liy may be in use.

2. The combination of the paper-supporting iingers and the fly-frame with devices, substantially as described, by which the lateral adjustment of each of the fingers and its fixation in position may be accomplished, as set forth.

3. The combination and arrangement of the metallic strip C or electrical conductor with the fly-frame and its series of' sheet-supporting bars, substantially as described.

THEODORE H. MEAD.

Witnesses:

R. H. EDDY, F. P. HALE, Jr.

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