US84403A - Improvement in printing-presses - Google Patents

Description

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te 6K@ luiml SAMUL J. BAIRD, OF STAUNTON, VIRGINIA.

Letters Patent No. 84,403, dated November 24, 1868.

IMPROVEMENT IN PRIN TIN G-PRESSES The Schedule referred to in these Letters Patent and making part of the same.

I MM* To all whom it may concern:

Be it known that I, SAMUEL J. BAIRD, of Staunton, in the county of Augusta, and State of Virginia, have invented a new and improved Frisket, Applicable, to Drum-Cylinder-Impression Printing-Presses; and I do hereby declare Athat the following' is a full and exact description thereof, reference being had to the accompanying drawings, and to the lettersof reference marked thereon.

In the ordinary bed-and-platen printing-press, the frisket is a stiff iron frame, covered with a sheet of paper `pasted thereon, and `so cut out as to allow the type to strike the face of the sheet that is to be printed, whilst'the inteiposing frisket protects the margins and blanks om being soiled by contact with the inky chase and furniture. The structure of the drum-cylinder presses precludes the use of this kind of frisket, and they .are therefore unt for ne book-printing, because of the liability of the margins being soiled.

My improvement consists in making thefrisketdrame of iexible materials, in order that it may be so bent, as it moves, as to avoid the ink-rollers, thus rendering it applicable to every variety of impression-cylinder presses. y

To enable others skilled in the artto make and use my invention, I proceed to describe its construction and operatic Figure lis atransverse section lof so muchof the machinery as is necessary to illustrate it.

Figure 2 is a plan view of the frame and bed ofthe press, the impression-cylinder and inking-rollers being removed.

Fi2gure 3 is a vertical cross-section on the lineA y y of In iig. I, A represents the impression-cylinder resting upon the form G, which is supportedand moved over the frame of the press, upon the friction-rollers G G G. I represents the frisket, with its bands,J J', extending from K over'the surface of the form, under the pulley E, and under the 'pulley E', to the forward end of the bed at K.

The sides of the frisket-frame may be made of cords, leather, chains, or other flexible substance, encased, if the nature of the material require it, in cloth, leather, or any suitable material. From it a border should extend inwardly, to whichthe frisketssheet may be pasted. The ends-of the frame may be of the same material as the sides, or they may be made of iron or other metal, as iu the ordinary fxisket.

The frisket is to be fastened to the press-bed at the rear end, by suitable hooks or hinges, at K. To the corners of the otherA end of the frisket, bands of leather or other suitable material are to be attached. These being drawn tightly over the pulley F, and under the pulley E', are to be fastened to the forward end of the bed at K.

When, therefore, the bed of the press is run out, it carries forward with itthe 'isket-bands, by reason of their fastening at K'. -As the bands pass over the pulleys F, they draw in that direction the frisket, which passes under the pulleys E, and ascends between the impression-cylinder and the ink-rollers D, thus leaving the formuntil it has received the ink, when, the action being reversed, it again descends upon it, as it returns under'the impression-cylinder.

Instead of the frisket-bands being attached to the forward end of the bed at K, as seen in the drawings, they may be carried upon pulleys over the impressioncylinder, and fastened to the rear end of the bed, or

they may be carried over pulleys suitably located, and their motion be controlled by weights attached to their extremities.

Instead of the shield S, a roller, S2, iig. 2, may be used, either smooth or grooved, by means of which the frisket maybe protected from contact with the inkrollers, and the movement of the frisket-sheet more effectually directed, as its successive edges present themselves-and turn upward around the pulleys and shaft c, the motion of the roller being governed by the pressure ofthe thick sides of the frisket-frame vas they pass between it and the pulleys E E.

In addition tothe firm latitudiualextension secured to the flexible frisk'et, byits tension on the pulleys, an additional arrangement may b e adopted. It is illus-I trated in iig. 2. H H H H is the bed of the press, with the form, C', upon it. K K are strips of wood or metal, of the thickness of the chase, extending from end to end of the bed, to which they are firmly fastened. On the upper surface of these strips are grooves, of proper size and form to receive the outer edges of the ti'isket-frame, which are to be corded or made thick, in order to iill the grooves. l cl are slats or pieces, fastened to the frame of the press, on aline with the grooved pieces, and extending from the rear of the bed to the line of contact between the impression-cylinder and the form. These pieces occupy such a position as to cover the grooves when the bed of the press is run in, thus pressing` the thickened edges of the frisket-frame into the grooves, and holding them firmly in place, whilst the frisket-.sheet passes freely between the edges of the grooved pieces and the covering-strips. L L are frame-pieces, by which the covering-strips may be fast- -ened to the frame of the press, orlthey may be fastened immediately to the sides of the frame, the grooves being correspondingly located;

The 'other parts ofthe press, being old, well known,

and different in the different kinds of presses, are not here particularly described.

` What I claim, and desire to secure by Letters Patent isi. A cembre frisser, to be used in combination with a flat-form and cylinder-impression press, substantially as and for the purposes set forth.

2. The roller, smooth or grooved, for protecting the frisket from the ink-rollers, and directing its ascent, as above described.

2.- The grooved vframe above described, whether lixed or' made movable,so as to be adjusted to any desired breadth of frisket, holding it firmly' extended, as abofo described, and for the purposes specified. SAMUEL J. ,BAIRD Witnesses:

N. l?. GALLETT, TALBOT B. COLEMAN,

H. OQLEMAN.

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