US452698A - Printing-press - Google Patents

Description

(No Model.) I v G. P. PENNER. PRINTING PRESS.

No. 452,698. Patented May 19,1891.

W/ TN E W W (24AM UNITED STATES PATENT OFFICE.

GEORGE P. FENNER, OF NEYV LONDON, CONNECTICUT.

PRINTING-PRESS.

SPECIFICATION forming part of Letters Patent No. 452,698, dated May 19, 1891.

7 Application filed December 18, 1890- Serial No. 375,128. (No model.)

To all whom it may concern:

Be it known that I, GEORGE P. FENNER, a citizen of the United States, residing at New London, in the county of New London and State of Connecticut, have invented new and useful Improvements in Printing-Presses, of which the following is a specification.

This invention relates to an improvement in printing-presses; and the invention consists in the details of construction set forth in the following specification and claims and illustratedin theannexeddrawings,inwhich- Figure 1 is a side elevation of a printingpress sectioned along .90 :0, Fig. 2. Fig. 2 is a section along y y, Fig. 1. Fig. 3 is a section along 2 a, Fig. 2.

In the drawings, the letter A indicates a frame or support, and B is a driving-shaft having the usual fast and loose pulleys C. Gear-wheels D E F communicate motion from the driving-shaft to the impression-cylinder G. To the driving-shaft B is jointed a shaft carrying a gear wheel I, said jointed shaft allowing the gear-wheel I to engage rack K at one time along the lower part of the rack and at another time along the upper part of the rack, whereby the rack is given areciprocating motion which is communicated to the type-bed L, so that the type-bed moves back and forth along its ways M. The operation and construction of these parts are well known so as to require no detailed description.

The type-bed L has a rack N, engaging toothed wheels 0 O. Said toothed wheels engage the toothed wheels P P, connected to the distributing rollers U U, which bear against the inking-rollers Q Q. As the typebed L reciprocates the Wheels 0 O and rollers U U and Q Q are rotated, so as to distribute ink over the type.

In Fig. l the type-bed L is shown as having reached, the extreme end of the stroke. It will be noticed that the bed L has passed only partly under the rollers Q. In passing to the extreme end of the other stroke the bed L will pass only partly under the rollers Q, said rollers Q inking those of the type which were not inked by the rollers Q and the rollers Q inking those of the type which were not inked by the rollers Q. The bed L can thus be lengthened, as seen in Fig. 1, where the bed L is made to extend inside of the inking-rollers toward the cylinder G. This lengthening of the bed L can be effected without its being necessary to enlarge the cylinder G. It is also to be noticed that as the strokes of the bed L are shortened by the bed L having only to pass partly under the rollers Q Q, the bed L is enabled to arrive so much sooner at the end of each stroke, thus enabling the press to operate rapidly. The rollers Q Q are mounted in frames RR,which are-vertically movable sufficiently to enable the rollers Q Q to be lifted out of contact with the type and to pass back into contact therewith.

In Fig. 1, where the bed L is at the extremeend of the stroke, the lifting-lever T under the action of the revolving cam or nose S on 0 the shaft IV has raised the frame R sufticiently to raise the rollers Q out of contact with the type. The frame R is also shown raised in Fig. 3. The lever T is fulcrumed at a. As the bed L starts on the other stroke and the nose or cam S revolves out of contact with lever T the frame R falls and brings the rollers Q into contact with the type. Such contact does not occur until the rollers have fully partaken of the motion of 8c the bed L, so that no friction or rubbing of the rollers on the type will occur, since by such friction the ink might be smeared over the type and the type be clogged. When the bed L has passed to the end of its stroke under the rollers Q, the cam or nose S has turned so far as to act on the lifting-arm T, provided on the frame R, so as to raise said frame R, thereby raising the rollers Q out of contact with the type and keep such rollers out of such contact until said rollers have fully partaken of the motion of the bed L in its stroke toward the rollers Q. The lever T and arm T are provided with anti-friction rollers Z, whereby the lifting action of the nose or cam 5 S is eased.

The rise of the frames R R, while suffi cient to raise the inking-rollers out of c011- tact with the type, is not made so great as to lift the toothed wheels 0 0 out of mesh with IOO the rack N, so that the movements of the rack will always properly actuate the wheels 0 O and the inking-rollers. The teed-board V is arranged in the usual way for enabling the cylinder to be properly fed or supplied.

The cam or nose S is secured to shaft V, which shaft is connected by gears X Y with the driving-shaft B, so that said shaft \V and cam S are suitably rotated.

As seen in Fig. 2, a cam S, lifting-lever and lifting-arm T are placed on each side of the machine, thus securing uniform action.

lVhat I claim as new, and desire to secure by Letters Patent, is-

1. The combination, with an impressioneylinder, a type-bed, and two alternately rising and falling frames carrying inking-rollers, of a rotating cam and devices acted on by the cam to alternately raise the two frames for holding the inking-rollers out of contact with the type while the bed is altering its stroke, substantially as described.

2. The combination, with an impressioncylinder, at type-bed, and movable frames carrying two sets of inking-rollers, of a lifting-lever connected with the frame of one set of inking-rollers, a lifting-arm on the frame of the other set of inking-rollers, and a cam acting on the lever and arm to hold the inklug-rollers out of contact with the type-bed while the latter is altering its stroke, substantially as described.

3. The combination, with a reciprocating type-bed, an impression-cylinder arranged to perform one revolution during a forward and backward movement of the type-bed, and two sets of Vertically-movableinking-rollers, each set being made to ink a portion of the type, of a rotary cam and mechanism operated by the cam for alternately lifting the rollers out of contact with the type and for holding them while the bed is altering its stroke, substantially as described.

t. The combination, with an impressioncylinder, a reciprocating type-bed, and two sets of vertieally-movable inking-rollers, each set arranged to ink its respective portion of the typeform while the bed is moving along about one-hall": of the width of the form toward the limit of its travel and return, said typebed being made to carry only a portion .of the type-form under each corresponding set of ink-rollers, of a rotary cam, and devices operated by the cam for holding the inkrollers out of contact with the type while the bed is altering its stroke, substantially as de scribed.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

GEORGE l, FENNER. XYitnesses;

G. '1. BROWN,

Geo. COLFAX.

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