US1678859A

US1678859A - Printing-plate blank and method of making

Info

Publication number: US1678859A
Application number: US126443A
Authority: US
Inventors: Robert C Isaksen
Original assignee: Individual
Current assignee: Addressograph Co
Priority date: 1926-08-02
Filing date: 1926-08-02
Publication date: 1928-07-31
Anticipated expiration: 1945-07-31

Description

- July 31, 1928.

R. C. ISAKSEN PRINTING PLATE BLANK AND mmon OF MAKING Filed Aug. 2; 1926 Patented July 31, 1928,

UNITED STATES PATENT OFFICE.

ROBERT c. ISAKSEN, or rLUsHINe, NEW YORK, AssIeNon, BY MESNE AssieNMEN'rs,

'ro ADDRESSOGRAPH compan or cnrcaeo, ILLINOIS, A CORPORATION or DELA- WARE.

PRINTING-PLATE BLANK AND METHOD OF MAKING.

Application filed. August 2, 1926. Serial No. 126,443.

This invention relates to the manufacture of printing plates for use in addressing machines and the like and its object is to enable a plurality of plate blanks to be made in i one operation and handled as a group, to provide increased production and to reduce the cost of manufacture.

In the accompanying drawings illustrating the invention:

Fig. 1 is a plan view of a metal strip.

Fig. 2 shows the strip cut into several plate blanks and also shows the group of blanks as cut moved from cutting to distributing position.

Fig. 3 is a perspective view of a single plate blank.

These printing plate blanks are adapted to have printing characters embossed thereon and it has been customary heretofore to 20 make the .blanks singly, which requires a separate operation for each blank and individual handling thereof. My invention rovides means whereby a plurality of blanks may be cut from a single strip and 25 then moved as a group away from cutting position to a position Where they may be distributed, whereby a plurality of blanks, instead of a single blank, may be produced in each cutting operation.

I have selected for illustration a strip 4 from which five blanks 5 of a convenient size may be cut. This strip is placed in a machine which is properly supplied with cutting dies for separating the strip into plates and the invention consists primarily in cutting the strip along irregular lines to produce interlocking projections 6 in the edges of adjacent blanks so that after the strip is cut the blanks will be interlocked and remain in group formation against displacement in the plane of the blanks so that the group of blanks may be moved away from cutting position, indicated at the left in Fig. 2, to distributing position, indicated at the right in Fig. 2, without disconnecting or disassembling the several blanks. When the blanks are moved to distributing position they may be arranged over hoppers or other receptacles in which the blanks may be deposited by gravity, or they may be arranged in position to be disconnected by applying pressure upon the face thereof and dlstributed in stacks, or they may be separated and distributed in any other desired manner. It will be understood that to disconnect the blanks it is only necessary to displace them bodily in a plane normal to the plane of the face of the group of blanks. The interlocking projections may be made 1n various forms but I have shown them dove-tailed because this will prevent disconnection of the blanks by movement in a direction lengthwise of the group, as well as by movement of separate blanks side-wise in the group and lengthwise of the blanks. It s not new to provide a blank with edge proections but such blanks have been made heretofore, so far as I know, by stamping each blank singly from the end of a strip and without employing the projections to make interlocking or interengaging connect1on between two or more blanks, and never before have these blanks been made with dove-tailed projections, so far as I am aware.

I do not limit myself as to the number or as to the size of the blanks to be cut from a strip nor as to the exact form of the proectlons and I reserve the right to make all such changes as fairly fall within the scope of the following claims.

I claim:

I. The herein described method of making printing plate blanks, which consists in cutting a strip along irregular lines to divide the strip into a plurality of blanks, the irregular lines of cut forming interlocking pro ections on the blanks to hold them in interlocking engagement as they are cut, moving the plurality of blanks bodily as a group from cutting position to distributing position, and then separating the blanks.

2 A printing plate blank having a plurality of dove-tailed projections at opposite edges thereof and spaced apart between 1ts ends.

3. A printing plate blank having a plurality of notches in opposite edges thereof forming dove-tailed projections.

4:. A printing plate blank having a plurality of dove-tailed projections as thick as the intermediate part of the blank and spaced apart between the ends of the blank.

5. A plurality of printing plate blanks arranged edge to edge, and a plurality of arranged edge to edge, and projections at dove-tailed projections at adjacent edges of adjacent edges of the blanks spaced apart the blanks interlockingly holding the blanks 10 between the ends of the blanks and intertogether in strip formation against relative 5 locking the blanks in strip formation against movement laterally or longitudinally of the relative lateral movement. strip formation.

6. A plurality of printing plate blanks ROBERT C. ISAKSEN.