US 1261998 A
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Description (OCR text may contain errors)
I N. A. ANDERSON. GAGE AND STOP FOR PRINTING PRESSE&
APPLICATION FILED AUGJB, I915.
Patented Apr. 9, 1918.
2 SHEETS-SHEET 1- Patented Apr. 9, 1918.
2 SHEETSSHEET 2.
N. A. ANDERSON.
APPLICATION FILED AUG-16.1915- GAGE AND STOP FOR PRINTING PRESSES.
onnes snares rarnnrr orrion.
NELS A. ANDERSON, or WARREN, enro, assrenon' are THE smears AUTUMATIG rnnss COMPANY, or NILES, err-re, a oonrona'riorr or onto.
GAGE AND STU? FOB, PBINTING-PEE-SSES.
Specification of Letters Patent.
Patented Apr. a, rare.
Application file-i August 16, 1815. Serial No. 45,758.
To all whom it may concern:
Be it known that l, NnLs A. ANonnsoN, of iV-arren, in the county of Trumbull and State of @hio, have invented certain new and V useful Improvements in Gages orStops for Printing-Presses; and i do hereby declare the following to be a full, clear, and exact desciptionof the invention, such as will enable others skilled in the art to which it appertains to make and use the same.
Tne primary object of this invention is to provide in a printing press, front stops or guides which, in conjunction with the press cylinder, will automatically insure the proper positioning of the stock.
And a further object is to utilize such stops in discharging the stock from the press.
in the accompanying drawing, Figures 1, 2, and 3 are end views showing three positions of an impression cylinder, the feed table and front stops embodying my invention. Fig. 4- is a similar view including a portion of the strippers and delivery rolls. Fig. 5 is a plan view.
Referring to the drawings, 1 designates an impression cylinder which is designed to be oscillated in known manner; 2 the guides thereon; and 3 the grippers.
Pivotally mounted on a shaft at of the press is a feeder frame 5, suitably supported at its free end by cam members 6 rotatably mounted on a shaft 7 having its bearings in the press frame. The feeder comprises traveling tapes 8 and cooperating balls 9 mounted in bars 10 of the feeder frame. At the free end of the frame are front stops 15 consisting of rotary members having curved surfaces and shown in the form of rollers journaled in arms 16 which latter are adjustably mounted on a shaft 17 and are capable of being moved longitudinally of the sheet to any desired position.
The direction of oscillation of the impression cylinder is indicated by arrows in the several figures, the movement in one direction bringing it in a position to receive the sheetfrom the feed table, and the reverse movement gripping the sheet and causing it to advance with the cylinder and be printed and delivered, the rotation in each direction being approximately one and onethird revolutions. stock S is being advanced by the tapes 8 and cooperating balls 9 and is indicated as slightly beyond the register plate 18, and
As shown in Fig. 1, the
the stops it) are in contact with the rear ecge of the impression cylinder surface. By the time the. cylinder has moved slightly farther toward the right the sheet vill have been advanced until it is in contact withperfect regiter and alinement with the guides (see Fig. The grippers will then close on the sheet and hold it against the impression cylinder which latter then begins its forward rotation. During the first stage of this latter movement the cam members 6, which are actuated in any preferred manner, will raise the feed table and the stop rollers 15 clear of the cylinder. The parts in this position are shown in Fig. 3.
Where it is desired to convert the stop rollers into a delivery means for positively moving the sheet far enough to enter the bite of the withdrawal rolls 1 provide the cam members 6 with a cutaway portion 20, as shown in Fig. at. This formation of the cams permits the feed table to drop just after the cylinder has completed its revolution so as to bring the rollers 15 into con- .tact with the cylinder for a brief period.
This contact is efiected just after the front edge of the sheet has passed the rollers and is released by the grippers. Further rotation of the cams will then immediately raise the table and the rollers so that there will be no dragging action on the sheet due to engagement between the stop rollers and the now slowly moving impression cylinder which is completing its forward rotation.
The advantages of my invention will be appreciated by those skilled in the art. It will be seen that I have provided a very simple and efficient front stop which will insure perfect register and alinement of the sheet before being gripped by the impression cylinder and that this same means may later be effectively employed to positively eject the sheet toward the delivery rolls, rendering unnecessary additional mechanism for moving the sheet to the deliverer. Furthermore as the roller stops rest on the cylinder and the cylinder constitutes the subjacent support for the sheet, the front edge of the latter will lie evenly and fiat upon the cylinder.
I claiin'as my invention:
l. in a printing press, in combination h a rotary cylinder, a stop designed to enga with such cylinder and to be revolved the eby.
2. l! L with a rotary cylinder, a roller stop designed to engage With such cylinder to be rotated thereby.
3. In a printing press, in combination with an oscillating cylinder, a stop designed to engage therewith and, when the cylinder is moved in one direction,'to limit tne positioning of the stock relatively there;
to, and when such cylinder is rotating in a printing press, in combination menses the opposite direction to efi'ect the dislcharge of the stock from the cylinder, and
Withdrawal rolls for receiving the stock when so dlscharged.
In a printing press, in combination with arotating cylinder, a feed table there-- for, front stops mounted on said feed table and free to revolve in different directions in conjunction with said cylinder, and means for raising'and lowering said feed table.
5.111 a printing press, in combination ing Witnesses.
' NELS A. ANDERSON. Witnesses C. G. PRITCHARD, FREDERICK W. DUNN.
Copies of this patent may be obtained for five cents each, by addressing the Gommissioner of Patents.
' Washington, D. G.