US1197825A

US1197825A - Inking mechanism for printing-machines.

Info

Publication number: US1197825A
Application number: US86793214A
Authority: US
Inventors: Robert Hoe
Original assignee: Individual
Current assignee: Individual
Priority date: 1914-10-22
Filing date: 1914-10-22
Publication date: 1916-09-12
Anticipated expiration: 1933-09-12

Description

R. HOE.

INKlNG MECHANISM FOR PRINTING MACHINES.

APPLICATION FILED OCT- 22,1914.

' Patented Sept. 12,1916.

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INKING MECHANISM FOR PRINTING-MACHINES.

Specification of Letters Patent.

Patented Sept. 12, 1916.

Application filed October 22, 1914. Serial No. 867,932.

' To all whom it may concern Be it known that I, ROBERT Hon, a citizen of the United States, residing at Battle Creek, county of Calhoun, and State of Michigan, have invented certain new and useful Improvements in Inkmg Mechanism for Printing-Machines, fully described and represented in the following specification and the accompanying drawings, forming a part of the same.

This invention relates particularly to inking mechanism for printlng machines, the especial object being to provide suitable devices for retarding the speed of rotation of an ink carrying roll for contact with a fountain roll or other ink supply and accelerating such speed for transfer of the ink to an ink receiving roll. The mechanism, however, may be applied to other uses than varying the speed of an ink carrying roll, and the invention, broadly considered, includes such uses.

The apparatus of the present invention employs a rotating carrier on w'hlch are mounted one or more ink carrying or ductor rolls, which, by the rotary movement of the carrier, are first brought into contact with a fountain roll and then with an ink receiving roll from which the ink is distributed by suitable devices. A curved ink distributing plate may be used between the fountain roll and ink receiving roll, with which the ink carrying rolls contact for better distribution of the ink, although this is not essential. Between the ink receiving roll and the fountain roll means are provided for retarding the speed of rotation of the ink carrying rolls, so that they engage the fountain roll at a comparatively low speed, such as to,

properly take the ink from the fountain roll, and between the fountain roll and ink receiving roll the speed of the ink carrying rolls is accelerated by engagement of the rolls with the ink distributing plate above referred to, -or other member engaging the rolls, so as to .bring the speed of the ink carrying rolls up to the desired-high speed of the ink receiving roll for engagement with and transfer of ink to the latter.

For a full understanding of the invention a detailed description of a construction embodying all the features of the same in their preferred form will now be given in connection with the accompanying drawings, and the features forming the invention then specifically pointed out in the claims.

struction. Fig. 3 is a detail section looking to the right on line 3 of Fig. 2.

Referring to said drawings, the general arrangement of the inking mechanism is substantially that of United States Letters Patent to Cox No. 441,790, dated December 2nd, 1890, A being the rotating carrier in.

which are mounted four ink carrying rolls B, which first take ink from fountain roll C in ink fountain D, then pass over ink distributing plate E, and then make contact with ink receiving roll F to transfer ink thereto, the ink being delivered from ink receiving roll F in any suitable manner, a distributing cylinder G with transfer roll H, vibrating rolls I, type cylinder K, and form rolls L, being shown, as is usual in modern high speed printing presses.

Referring now to the parts shown, especially embodying the present invention, each of the rolls B is mounted in yielding bearings, the bearings 10 at opposite ends of the rolls being shown as fixed to stems moving in boxes 11 and spring pressed outward by springs 12, so that the rolls may be moved inward against the spring pressure. The shaft of each of the rolls B carries at each end two disks, one 13, fixed to the shaft, and the other 14 loose thereon. The loose disks H engage abutments 15, preferably in the form of curved shoes, as shown, mountedat opposite ends of the rolls between the ink receiving roll F and the fountain roll C, these shoes preferably being spring pressed inward for yielding pressure on the rolls B, as shown, the shoes being pivotally mounted on stems 16 moving in boxes 17, and spring pressed by springs 18. Each of the rolls is provided with brake shoes 19 mounted at opposite ends on the carrier A and preferably adjustable as shown, and held in adjusted position by set screw 1, these brake shoes engaging disks 13 on the rolls, when the rolls are pressed inward by engagement of disks 14 with shoes 15.

The operation of the construction is as follows: The carrier A is rotated continuously, and, the fountainroll is either caused to rotate by contact with the rolls B, or may be rotated intermittently or continuously,

- andbyany suitable means, as common with fountain rolls. The rolls B are rotating at high speed when they leave roll F, and are retarded for engagement with the fountain roll C by disks 14 running over shoes 15 which press the rolls inward sufliciently to bring the disks 13 fixed on the roll shafts into braking contact with brake shoes 19. The springs 18 supporting shoes 15 are stronger than roll springs 12, and are adjustable to give the desired yielding brake pressure. The rolls B are thus retarded tothe speed desired for engagement with the fountain roll C and, after leaving shoes 15 so as to be moved outward by springs 12,

engage and take ink from the surface of supply roll C, and then engage the inner surface of the plate or shoe E, so-that, by the rotation of the carrier A with the rolls B in contact with plate or shoe E, the rolls B are speeded up again to substantially the speed of roll F, or such speed as is desired, for transfer of ink to the ink receiving roll F. While the plate or shoe E is shown as engaging the ink receiving surface of the rolls B, and extending throughout their length, so as to form an ink distributing surface, it will be understood that this is not essential to the speed controlling mechanism, but the shoe may engage any portion of the rolls B, such as the disks 13 or other disks fixed on the roll shaft, for speeding up the roll, either with or Without the ink distributing plate E.

lVhat I claim is: r

1. In an inking mechanism for printing machines, the combination with an ink supply roll and an ink receiving roll, of a rotating carrier, one or more ink carrying rolls mounted on the carrier and free to rotate thereon for transfer of ink from the ink supply roll to the ink receiving roll, means for retarding the rotation of the ink carrying rolls for taking ink from the ink supply roll, and means for accelerating the rotation tion during the movement of the carrier from the ink receiving roll to the ink supply roll, and an abutment engaging the rolls to accelerate the rotation of the latter during the movement of the carrier from the ink supply roll to the ink receiving roll.

3. In an inking mechanism for printing machines, the combination with an ink supply roll and an ink receiving roll, of a rotatmg carrier, one or more ink carrying rolls mounted on the carrier and free to rotate thereon, said ink carrying rolls making ink transfer contact with the ink supply and ink receiving rolls, braking devices on the carrier for retarding the rotation of the ink carrying. rolls, and an ink distributing plate engaged by the ink carrying rolls during the movement of the carrier from the ink supply roll to the ink receiving roll and acting to 1Tccelerate the rotation of the ink carrying r0 5;

4. The combination with a rotating carrier having one ormore rolls mounted to rotate in yielding bearings thereon, of fixed and loose disks on the roll shafts, brake shoes carried by the carrier and engaging the fixed disks, and a shoe engaging the loose disks to press the rolls inward and apply braking pressure during the rotation of the carrier.

5. The combination with a rotating carrier having one or more rolls mounted to rotate in yielding bearings, thereon, of fixed and loose disks on the roll shafts, brake shoes carried by the carrier and engaging the fixed disks, :1 shoe engaging the loose disks to press the rolls inward and apply braking pressure during a portion of the rotation of the carrier, and a shoe engaging the rolls to accelerate their rotation after the brake pressure is relieved by passing the brake applying shoe.

6. The combination with roll C and higher speed roll F, of rotating carrier A having one or -more rolls B mounted in yielding hearings on the carrier and engaging successively rolls C, F, brake shoes 19 on the carrier, shoes 15 engaging the rolls to press them into contact with shoes 19 and apnly braking pressure to retard the rolls for engagement with roll C, and a shoecngaging the rolls after leaving the roll C to accelerate their rotation for engagement with roll F.

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

ROBERT HOE.

Witnesses:

A. WHITE, C. J. Sawxnn.