US1346501A - Grainer for planographic plates - Google Patents

Description

w. H.,,LONG. GR'AINER FOR PLANOGRAPHIC PLATES. APPLICATION FILED AUG-1B, 1916.

1,346,501 v I Patented July 13 1920,

' 2 SHEETS-SHEET 1.

INVENTOR,

BY z

ATTO EY W. H. LONG.

GRAINER FOR PLANOGRAPHIC PLATES.

APPLICATION FILED AUG-18.1916.

Patented July 13, 1920.

2 SHEETS-SHEET 2- MWNTOR.

ATT RNEY companying WILLIAM H. LONG, OF NEW YORK, Y.

GRAINER FOR PLAN'OGRAPHIO LPIMQJEES.

Specification of Letters Patent.

Patented July 1?, Iii-P24).

Application filed August is, 191's. Serial rename.

chine for graining plates for planographic printing. Objects and advantages of the invention will be set forth in part hereinafter and in part will be obvious hereirom, the same being attained through the instrur mentalities pointed out in the appended claims. v

The invention consists in the novel parts, constructions, arrangements, combinations and improvements herein shown and described. i

The accompanying drawings, referred to herein and constituting a part hereof,villustrate one embodiment of the invention, and together with the description serve to explain the principles thereof.

Of the drawings V Figure l is a top plan of a machine con structed inaccordance with the principles of the invention;

Fig. 2 is a vertical section on the line Ai$ of Fig. 1;

Fig. 3 is a partial section approximately I on the line (E -D of Fig. 2, and showing other parts in elevation and Fig. 4 is a view similar to Fig. 1 but showing a different form of plate holding box.

Referring by way of example to the acdrawings, the machine is mounted upon a suitable stationary frame 1, said frame comprising a floor plate 2, and a plurality of upright frame members 3 rising therefrom, and supporting a top frame member or top plate 4. Fixed to or integral with the stationary frame plate 4 are two upwardly projecting journal blocks 5 and 6. Pivotally mounted for rocking movement upon the blocks 5 and 6 by means of pintles or trunnions 7 and 8, respectively, which pintles are journaled in the blocks 5 and 6, is a frame 9. The frame 9 comprises an inner annulus 10, located within the journal blocks 5 and 6, from which annulus project the pintles or trunnions 7 and 8. This annular portion 10 of the rocking frame arim or annulus 15.

has projecting outwardly therefrom, and preferably radially, spiders 11., l2, l3, and let, said spiders carrying at their outer ends Mounted upon the outer side of the rim are a plurality of friction rollers 16, ll", 18 and 19. The entire structure just described is adapted to rock or oscillate in its journal bearings upon the blocks 5 and 6.

Suitable means are provided for rocking or oscillating to and fro the frame 9 ust described, and as embodied said means comprise a power shaft 20 mounted insuitable bearings 22 and in the machine frame. The shaft 20 is driven in a suitable manner, as by a variable speed pulley 21. Fixed to the shaft 20 is a crank disk 24, to which is.

pivotally connected a rod 25. The other end of the rod 52-5 1S pivotally connected by v a ball and socket joint 26 to a lug 27, carried byand extending inwardly from the ring 15.. Thus as the shaft 20 rotates, there is imparted to the frame 9 a rocking or oscillating motion about its bearings 7 and 8.

A. suitable receptacle for the plates to be grained is provided in the form of a box, to the bottom of which the plate is attached, the graining materials acting upon the surface of the plate, due to the motion of the box. In Fig. 1 of the drawings the box is shown of circular form with a flat bottom, and in Fig. 4 the box is shown of substantially rectangular form, with counterweights 29 to produce proper balance. The box 30 has the plate as fastened to the bottom thereof,.the side walls 31 of the box serving to keep the graining materials therewithin.

Suitable means are provided for supporting the box so that it will receive the rocking or oscillating motion of the frame 9, and also have rotatory motion substantially about its center, both motions being preferably simultaneous; As embodied, the box 30 has upon the bottom thereof a plate 32 adapted to rest upon the rollers 16, 17, 18 and 19, the plate 32 and the box 30 rolling around upon these rollers. At the center of the box the plate 32has a downwardly projecting portion 33, which is spherically recessed to receive and to rest upon a ball 34. The ball 34 in turn rests in a spherical recess 35 in or attached to the top plate 4 of the frame. At or near its periphery the plate 32 is provided with a downwardly extending annular flange 36, from the lower 'end of which flange extends: inwardly a holding lip or plate 37, which extends beneath the rollers of theframe 9. The bO-X with the plate m is thus mounted to rock to and fro with the frame 9 but is free for rotatory motion thereupon and upon the ball 34. A 7

Suitable means are provided for rotating gear ring 51 is rotatably supported upon the top of the frame plate 4-. The ring 51 is kept to center and in place horizontally, while being free to rotate, by suitable means, comprisingsuitable collars formed onthe machine frame.

The gear ring 51 and the be 30 are connected together inasnltable manner, and as embediedthere are provided downwardly projecting fingers 52 and 53, fixed to inwardly-disposed. projections 55, fixed to the plate 3'7, and conveniently carried by two of the spiders 11, 1 2, 13 and 1 1-. lhelingers 52 and 53 project through radially disposed slots 57 formed in the gearring 51,. thereby carrying theplate box 30-and plate a; around with the gear ring 51 in its rotatory movement, while permitting the plate box and plate to rock with the frame 9. The rock- 'ing and the rotatory movement may be correlated; to each other in such manner as to vary and modify the combined motion to the best advantage in producing a high quality grain for printing.

The plate box may be emptied of the marbles and'slush by means of a hole closed by a suitable plug or like device.

From allitlire foregoing it will be understood that a machine has been provided realizing the objects of the invention andgthe advantages herein set forth, together with other objects and advantages; and it will be further realized that changes may be made from the specificconstructionherein shown and described without departing from the principles of the invention and without sacrificing its chief advantages.

Wh'at I claim as IHYlIlVGIltlOII is:

1. A grainer for planographic printing plates including in combination a plate'box, and devices forsimultaneously rotating and rocking thebox. V

2; A grainer' for p'lanographie' printing plates including in combination a rocking frame, a plate box mounted upon and rocking with thef'rame and simultaneously r0- 'tating relatively thereto.

3: A grainer for planograph-ie printing plates including in combination a vertically rocking frame, a plate be rocking therewith, and means forhorizontal'ly rotating the plate box; I

In testimonynvhereof I have signed my name tothis specification in: the presence of two subscribing witnesses;

lVitnesses A NA ROSENTHAL, Eonisa LOEHR'.

. WILLIAM H. Lone. v

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