US572884A - Charles f desman - Google Patents

Description

(No Model.)

0. FORSMAN. REGISTRY BLOCK FOR ELECTROTYPES.

Patented Dec. 8, 1896.

a H a! 4 A I I; I II I J l A NORA 5Y5.

. trotype with the ground is always obtained.

UNITED STATES PATENT OFFICE.

CHARLES FORSMAN, OF NEW YORILN. Y.

REGISTRY-BLOCK .FQR ELECTROTYPES.

SPECIFICATION forming part of Letters Patent No. 572,884, dated December 8, 1896.

Application filed February 6, 1896.

T0 (IIZZ whom it may concern.-

Be it known that I, OHAELEs FORSMAN, a citizen of the United States, residing in the city, county, and State of New York, have invented certain new and useful Improvements in Registry-Blocks for Electrotypes, of which the following is a specification.

This invention relates to a registry-block for electro types or plates, the object of the invention being for the purpose of shifting the electro types or plates without unlocking them from the block in such a manner that in color or other printing a perfect registry of the elec- The invention consists of a frame in which is mounted an adjustable backing-plate, means for adjusting the backing-plate in the frame, an abutment-flange along one end and one side of the backing-plate, against which the electro type or plate is abutted, and gripper-jaws which engage the free edges of the electroplate and force the same against the abutment-flange, so that the electroplate is firmly locked on the registry-block in such position that it can be adjusted even to hairbreadths, all as hereinafter described, and then particularly claimed.

In the accompanying drawings, Figure 1 is a plan view of my registry-block for electroplates. Fig. 2 is a longitudinal section of the same on line 2 2, Fig. 1. Fig. 8 is a broken detail plan view of one of the adjusting-shoes which are mounted in the frame of the block for adjusting the backing-plate. Fig. 4 is a section on the line 4 4, Fig. 3, showing the backing-plate also; and Fig. 5 is a broken detail view of the main portion of the adjusting mechanism of the gripper-jaws which engage the electroplate.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A indicates a rectangular frame which is provided at its upper inner corner with a rabbet-groove a, which in practice is of such size that a space of one-eighth of an inch is left all around the, backing-plate B, which rests in the rabbetgroove. The backing-plate Bis of thin metal and is provided on its under side with a suitable number of transverse and longitudinallyextending shoulders I), against which abut the shoes 0, which are mounted in the main frame Serial No. 578,232. (No model.)

end and one side with an upwardly-projecting abutment-flange B and at the opposite end and opposite side with slots 1), which eX- tend at right angles to the edges of the backing plate. Projecting upwardly through these guide-slots b are a series of gripper-jaws E E, which may be separately adjusted, but which preferably, as shown in the drawings, are made adjustable in series, that is to say, three (E) of the same, which are arranged at one side of the backing-plate, areadjusted together and separately from the other two gripper-jaws E, which are arranged at one end of the backing-plate, and which are also adjusted together. The gripper-jaws E,which are guided in the slots at one side of the backing-plate, are adjusted by means of a rectangular frame F, the central bar F of which is provided with a laterally-extending rod f, which is provided with a screw-thread, and carries at its outer end the central one of the gripper-jaws E. This screw-threaded rod f passes through a screw-threaded opening in one of the ribs which go to make up the skeleton interior A of the main frame, said rib being provided with a lateral lug g, within a recess g of which, that extends at right angles to the screw-threaded opening through which the rodf passes, is arranged an adjusting-nut G. At the end of the backing-plate B,in which the gripper-jaws E are guided, is also arranged an adj usting-frame H, which is similar in function to the adj Listing-frame F and which moves at right angles to the latter. This adjusting-frame H, that carries the end gripper-jaws E, is adjusted in a similar mannor to the adjusting-frame F, that is to say, by a central screw-threaded rod h, projecting from the main bar of said frame and passing through one of the ribs of the skeleton inte rior of the main frame, said screw-threaded rod h being adjusted by means of a nut h, similar to the nut G.

My improved registry-block is adjusted and used as follows: The electroplate I, which is without the usual wooden-block mount, is first abutted with one end and one side against the end and side abutment-flange B on the backing-plate B. The nuts G h of the adjusting-frames are then rotated in any suitable manner, so that the latter are moved, and consequently the gripper-jaws E E caused to engage the other side and end of the electro plate, whereby the latter is firmly locked in position upon the backing-plate. The backing plate, together wit-h the electroplate mounted thereon, is now adjusted, according to the registration which is desired upon the ground to be printed in colors, by means of the adjustable shoes 0, which are adjusted by the rotation of the nuts D, said shoes 0 pivoting on the shanks 0, according to the angle at which the backing-plate and the electroplate are arranged to the main frame A.

Of course the backing-plate and the electroplate may sometimes be adjusted with their sides and ends at right angles to the sides and ends of the main frame, in which case the shoes 0 are arranged at right angles to the shanks O.' The slight play of one-eighth of an inch on either side of the backingplate B is sufficient for practical purposes.

Of course, if desired, the main frame .A may be provided with suitable graduations, and the backing-plate be provided with an indicating-mark which is adapted to register with the graduations, so that the adjustment of the backing-plate upon the frame may be accurately determined.

By means of my improved registry-block for electroplates it is possible to secure the accurate. registry of the electroplate with the work without unlocking the same from the chase. Other advantages of the invention are that the device Will not shrink like the ordinary wood mounting on which the electroplates are usually mounted; that the block is so solid it will not spring; the device will soon pay for itself, as the electroplates need no Wooden blocks, and underlaying directly under the plate is permitted Without any chance of the sinking of the electroplate, as when mounted on wood blocks.

Having thus described my invention, I claim as new and desire to secure by Letters Patent-- 1. The combination of a main frame provided with a rabbet-groove, a backing-plate mounted on the main frame, in the rabbetgroove,and having a space all around the edges of the same, means for adjusting the backingplate in the rabbet-groove of the main frame, and means for locking an electroplate on the backing-plate, substantially as set forth.

2. The combination of a flat rectangular main frame, a backing-plate mounted 011 the main frame and provided with an abutmentflange at one end and one side, said backingplate being of less length and width than the space of the frame in which it is contained, gripper-jaws guided in the backing-plate and adapted in connection with the abutmentflange to lock an electroplate in position on the backing-plate, and means for adjusting the backing-plate on the main frame, substantially as set forth.

3. The combination of a main frame, a backing-plate mounted on the mainframe and provided with depending shoulders, longitudinally-adjustable shanks guided in the main frame, shoes hinge jointed to said shanks and adapted to engage said shoulders, and means for locking the electroplate in position upon the backing-plate, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in pres ence of two subscribing witnesses.

CHARLES FORSMAN. \Vitnesses:

PAUL GoEPEL, Gno. W. JAEKEL.

Images