US748743A - Printing-press - Google Patents

Description

PATENTE-D JAN. 5, 1904..

c. H. JOHNSON. PRINTING PRESS.

APPLICATION FILED JULY 30, 1901.

K0 MODEL.

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3 5 in the tracks 13 of the frame.

UNITED STATES Patented January 5, 1904.

CHARLES H. JOHNSON, OF COLONY, KANSAS.

PRINTING-PRESS.

SPECIFICATION-formingpart of Letters Patent No. 748,743, dated January 5, 1904.

. Application filed July 30. 1901- Serial No. 70,239. (No model.)

To all whom it may concern:

Be it known that LOHAnLEs H. JOHNSON, a citizen of the United States of America, residing at Colony, in the county of Anderson and State of Kansas, have invented certain new and useful Improvements in Printing- Presses, of .which thefollowing is a specification.

This invention relates to printing-presses, and particularly to that class known as bedand-cylinder machines, the said invention being a part of the application filed March-20, 1900, which has been divided.

The object of the invention is to produce, first, a novel combination for moving the impression-roll vertically; second, for operating the gripping-fingers and temporarily retaining them in position, and, third, for reciprocating the type-bed.

In describing the invention in detail reference will be had to the accompanying drawings, forming a part of this specification, wherein. like characters denote corresponding parts in the several views, and in which- Figure 1 is a longitudinal central sectional view of a printing-press embodying the invention. Fig. 2 is a longitudinal sectional View of a portion of the inventionvshown in Fig. 1. Fig. 3 is a. transverse sectional View taken in front of the impression-roll.

In the drawings, 1 denotes the frames, and 2 a crank-handle of a shaft on which the drum 3 is mounted and bvwhich it is rotated. A type-bed 25 has depending ribs a, which travel The bed-plate has a forwardly-projecting arm 34, provided with a head, and the end of the head has slots in which is fastened the end of the strap 6, the opposite end of said strap being wound around the drum 3. A strap 5 has one end wound around the drum and its opposite end extending rearwardly and secured to the end of the arm 35, said arm being attached to the rear of the type-bed. It will be observed that as the drum is rotated in alternate directions the straps will impart a reciprocating movement to the type-bed. 7

Approximately midway the length of the frame are brackets 27, each having apertured ends for receiving a rod 0, said rod having in its upper end a bearing 3 of the type-inking roll 3 A feeding-table 7 is supported by the standards 26 and 39. The ink-fountain 44 is attached to the rear of the frame of the press, and a roll 19 therein is engaged by the inking-roll 31 when the inking-plate 37 moves forward with the bedplate to which it is attached. A distribut-- ing-roll 31 is suitably journaled to engage the surface of the inking-plate in its movement. An elongated bearing 20 is provided for the roll 31 in order that said roll may descend into engagement with the roll 19 when disengaged by the inking-plate. An arm 4 is also secured to the shaft 21 of the frame and carries at its upper end a wheel 40,which is engaged by a rib 41, depending from the under surface of the bed-plate. The arm 4 is held normally in the position shown in full lines, Fig. 2, by the action of the spring 29, and when in such position the dogs 9" engage the lower ends of the rods 5 and elevate said rods. The rods in turn elevate the bearings 9, thus carrying the impression-roll 6 out of engagement with the type as the type-bed moves rearwardly. The bed moves a sufficient distance in onedirection to permit the end 41 of the rib 41 to pass beyond the roller 40 when said roller is in the full-line position and in the opposite direction suificiently to allow the end 41 to pass beyond the roller 40 when said roller is in the position illustrated in dotted lines. After the end 41* of the rib has passed beyond the roller and released it the spring 29 returns the arm 4 to the position shown in full lines, Fig. 2. The roller 40 when released by either end of the rib is held by the arm 4 in the path of travel of the rib 41 through the action of the spring '29, the rods 5, and dogs 9 The arms 34 and 35, attached to the type- Having thus fully described the invention,

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

1. In a printing-press, a frame, a type-bed having a depending rib, a rock-arm, a spring attached to the arm and to the frame, a roller on the rock-arm engaged by the rib whereby the arm is oscillated, an impression-roll means whereby the movement of the arm is communicated to the impression-roll and means for moving the type-bed on the frame.

2. In a printing-press, a frame, a type-bed having a depending rib, a rock-arm, a spring attached to the arm and to the frame, a roller CHARLES H. JOHNSON.

Witnesses:

J. O. RUTH, MERTA LONGSTRETH.

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