US1750406A - Water-cooled plate-finishing machine - Google Patents

Description

J. A. ISBELL March 11, 1930.

WATER COOLED PLATE FINISHING MACHINE Filed July 6, 1927 3 Sheets-Sheet 1 J. A. ISBELL March 11, 1930.

WATER COOLED PLATE FINISHING MACHINE Filed July 6, 1927 Y 3 Sheets-Sheet 2 NAN March 11, 1930. J. A. ISBELL 1,750,406

WATER COOLED PLATE FINISHING MACHINE Filed July 6, 1927 3 Sheets-Sheet 5 Patented Mar. 11, 1930 UNITED STATES PATENT OFFICE JOHN A. ISBELL, F PLAINFIELD, NEW JERSEY, ASSIGNOR 'I'O WOOD NEWSPAPER MA- CHINERY CORPORATION, OF NEW YORK, N. Y A CORPORATION OF VIRGINIA WATERCOOLED PLATE-FINISHING MACHINE Application filed July 6,

This invention relates to that type of machine for finishing stereotype plates in which the plate is clamped inside a cylinder which is revolved so that the rotating plate will be shaved by a stationary knife located within the cylinder.

The principal object of this invention is to provide an eflicient means for cooling the plate during the shaving operation uniformly so that the plate may retain its shape during that operation and become set in the formin which it is held during that time.

Other objects and advantages of the invention will appear hereinafter.

Reference is to be had to the accompanying drawings in which Fig. 1 is a side view of a stereotype plate shaving machine constructed in accordance with this invention;

Fig. 2 is a central vertical sectional view of the same;

Fig. 3 is a transverse sectional view on the line 33 of Fig. 1;

Fig. 4 is an end view as indicated by the 25 arrow 4 in Fig. 1; and

Fig. 5 is a part of a sectional view similar to Fig. 2 showing a modification.

Referring to the first four figures, it will be seen that a rotary cylinder 10 is mounted 30 on a stationary shaft 11 carried on the frame 12. This shaft is provided with hubs 13 which are connected with the cylinder 10 by plates 14 having screws for tightening them up and packing 15 for preventing the escape of water. The cylinder runs on a pair of bearing rings 16 supported on the frame and it is rotated by a power driven shaft 17 having a worm 18 driving a worm wheel 19 which is either integral with the cylinder 10 or secured thereto in any desired way.

On the stationary shaft or axle 11 is fixed stationary blade 20 which is an ordinary shaving blade for shaving the ribs of the plate down to a correct thickness.

For the purpose of cooling the plate during the shaving operation, water is led into the axle 11 from a pipe 21 and through a central passage 22 in the axle to a series of ports 23 located in a groove around the hub 13 at one 0 end. A pair of arms 25 extend out from 1927. Serial No. 203,728.

the bearing of the cylinder on the hub toward the circumference of the cylinder. They are arranged to make an angle with each other less than 180 so as to provide for allowing the cylindrical plates to be pushed into the cylinder longitudinally, without interference from them. The arms are hollow and open at their inner ends. The water is conducted through these arms into a circumferential chamber 26 formed in the body of the revolving cylinder. The water is discharged from the other end of this cylinder through similar arms 27 and into the other hub 13 and out through a discharge pipe 28.

By this construction initial heat of the plate is reduced and the plate is kept cool during the shaving operation so that the plate sets in the form in which it is clamped in the cylinder. The means for clamping the plate in the cylinderv is not shown as any ordinary meansrfor that purpose can be used.

A modification is shown in Fig. 5 in which the cooling is performed on the outside of the cylinder instead of by a chamber inside. In this case the cylinder 30 is mounted and operates in the same way but it has no hollow wall. On the outside it is provided with gutters 31 and 32 which extend around the periphery of the cylinder. Water is sprinkled on the top and these gutters serve to retain the water long enough to allow it to cool the cylinder and thereby the plate inside. The water can be sprayed or poured on the upper surface in any desired way. Theheat, of course, is conducted to the cylinder from the plate clamped on its inner surface which cools the plate.

This constitutes a thorough cooling device for the plate clamped inside the cylinder and does not affect the usual operation. The plate can be moved into the cylinder lengthwise and moved out of the other end lengthwise on account of the fact that the arms 25 and 27 are slanted as shown in Fig. 4.

Although I have illustrated and described only two forms of theinvention I am aware of the fact that modifications can be made therein by any person skilled in the art without departing from the scope of the invention as expressed in the claims. Therefore, I do not wish to be limited in these respects but What I do claim is 1. In a stereotype plate shaving machine, the combination with a stationary shaft having a stationary shaving blade thereon, said shaft having a pair of hubs, each having a port therein, and the shaft being provided with means for introducing water in the interior of one of the hubs and discharging it from the interior of the other, of a cylinder rotatably mounted on said hubs, means on the outer peripheral surface of the cylinder for rotating the cylinder, said cylinder having a pair of hollow arms at each end contacting with the hubs, each pair of arms being open to communicate with the port of the hub at that end and the walls of the cylinder being hollow to receive water through the arms, said arms being located at an inclination to permit the introduction and discharge of a curved stereotype printing plate endwisc.

2. In a stereotype plate shaving machine, the combination with a stationary shaft having a stationary shaving blade thereon, said shaft having a pair of hubs, each having a port therein, and the shaft being provided with means for introducing water in the interior of one of the hubs and discharging it from the interior of the other, of a cylinder rotatably mounted on said hubs, a frame, a power driven shaft mounted on said frame and carrying a worm, a worm Wheel on the outer peripheral surface of the cylinder cooperating with said worm for rotating the cylinder, said cylinder having a pair of hollow arms at each end contacting with the hubs, each pair of arms being open to communicate with the port of the hub at that end and the walls of the cylinder being hollow to receive water through the arms, said arms being located at an inclination to permit the introduction and discharge of a curved stereotype printing plate endwise.

3. In a stereotype plate shaving machine, the combination with a shaft having a shaving blade thereon, said shaft having a pair of hubs, each having a port therein, and the shaft being provided with means for introducing water in the interior of one of the hubs and discharging it from the interior of the other, of a cylinder mounted on said hubs, means for creating a relative rotary motion between the hubs and cylinder, said cylinder having a pair of hollow arms at each end contacting with the hubs, each pair of arms being open to communicate with the port of the hub at that end and the walls of the cylinder being hollow to receive water through the arms, said arms being offset downwardly to permit the introduction and discharge of a curved stereotype printing plate endwise.

In testimony whereof I have hereunto aflixed my signature.

JOHN A. ISBELL.

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