US1013621A

US1013621A - Gage for alining printing-plates.

Info

Publication number: US1013621A
Application number: US62486111A
Authority: US
Inventors: Karl M Schlueter; Ferdinand Schlueter Jr
Original assignee: Individual
Current assignee: Individual
Priority date: 1911-05-03
Filing date: 1911-05-03
Publication date: 1912-01-02
Anticipated expiration: 1929-01-02

Description

K. M. SGHLUETBR & F. SCHLUBTER, J11. GAGE FOR-ALINING PRINTING PLATES.

APPLICATION 1:11:21) MAY 3, 1911. 1,01 3,62 1. Patented Jan. 2, 1912.

A TTOH/VEYS 2 SHEETSSHEET 1.

/o M MN N q:231:2::IIIiIIZTI:I v p WITNESSES.-

coumnu PLANOGIAPH COHWMMINGPON. n. c.

2 SHEETS-SHEET 2 m I 1 j XI /ii j K. M. SGHLUETBR & F. SC HLUETER, JR.

GAGE FOR ALINING PRINTING PLATES..

APPLICATION FILED MAY 3, 1911.

Patented Jan. 2, 1912.

' WITNES E8: M1

IA PLANOORAPH CO" WASH mum. D- C nmrnn snares PATENT onrrcn.

KARL M. SCHLUETER AND FERDINAND SCI-ILUETER, JR, OF NEW YORK, N. Y.

GAGE FOR ALINING PRINTING-PLATES.

Specification of Letters Patent.

Patented J an. 2, 1912.

To all whom it may concern:

Be it known that we, KARL M. SCHLUETER and FERDINAND SCHLUETER, Jr., citizens of the United States, and residents of New York, county of New York, and State of New York, have invented certain new and useful Improvements in Gages for Alining Printing-Plates, of which the following is a specification, reference being had to the accompanying drawing, forming a part thereof, in which similar letters of reference indicate corresponding parts.

' This invention relates to gages for alining printing plates on grooved and scored base-blocks of printing presses; the device being especially adapted for registering and alining a plurality of plates in position to print a sheet comprising the several pages of a signature. These plates are generally of rectangular contour, and embody respectively a bevel-edged base and a raised, integrally formed type-faced upper part, which is also of rectangular contour, but covers less area than the base, and has vertical edges. The said type-faced parts of the printing plates of a given set are respectively of equal area, but the base parts are frequently variable, and their four beveled edges are not equidistant, on a horizontal plane, from the vertical edges of the typefaced parts; the said beveled edges also vary in degree. Therefore, when a plurality of plates are alined, in accordance with the present methods, by registering the lower edges of their bases on the scored guide lines of the block the type-faced parts are frequently out of alinement; the plates are also, owing to the differential angles of the beveled edges of their bases, susceptible of being pushed out of alinement by the act of fastening the plate holders employed to secure the plates to the block, as will be readily understood by those familiar with the art of printing.

The present invention has for its objects to provide means for rapidly and accurately registering and alining the type-faced parts of the plates; to obviate liability of displacement of the plates by means of the fasteners employed to secure them to the block; and to produce printed sheets embodying signatures having their several pages in perfect register and alinement.

The invention will be hereinafter fully described and specifically set forth in the annexed claims.

In the accompanying drawings forming part of this specification Figure 1, is a plan view of our improved gage; Fig. 2, a side elevation thereof; Fig. 3, a cross sectional view taken on the line 3-3 of Fig. 2; Fig. 4, a detached view of a bolt forming part of the device; Fig. 5, a plan view of a printing press base-block illustrating the mode of using the invention; Fig. 6, a side view of part of the block having our device thereon; and Fig. 7, is a vertical sectional view taken on the line 77 of Fig. 6.

In the practice of our invention we employ primarily, a steel or other metal rod a, as shown in the drawings, which is square in cross section, but it may be round or of other cross sectional shape, and is provided upon its upper surface with a scale I); leading downwardly from and registering with the graduations of said scale I), along one side of the rod a, are notches 0, for engagement with a bolt, as will be hereinafter described.

Mounted upon the rod a, are horizontally slidable standards d, which respectively comprise an upright 1, adapted to rest on the base block of a printing press, and a vertically adjustable guide 2, for engaging the vertical edges of the type-faced parts of printing plates. The guide 2, engages a plate 4L, which is extended laterally across the lower or base part of the standard (Z, and it is provided with dowel pins 5, which engage vertical openings 6, formed in the overhanging upper part of the standard d. As a means for adjusting the guide, 2, setscrews 7, are journaled in slots 8, of the lateral extensions 9, of the standard (Z, and threaded into the respective ends of the guide 2; vertical movement of each set screw 7, is prevented by means of an annular flange 10, which bears on the lower surface of the overhanging part 9, of the standard (Z, thus the guide 2, may be securely set in posit-ion required by the thickness of printing plates employed.

Engaging a laterally extended cylindrical opening 11, in each standard 0?, is a bolt 12, which embodies an inner cylindrical end part 14:, having a V-shaped key 13, for engaging the notches 0, of the rod 0,, an intermediate semi-cylindrical part 15, which bears upon the upper surface of the rod a, and an outwardly extended cylindrical part 16. The said bolt 12, is normally maintained in locked position by means of a spiral spring 17 which is located between the inner end of said bolt and the terminal wall of the cylindrical opening 17. It will be noted that the fiat portion of the part 15, of the bolt 12, bears on the upper surface of the rod a, whereby said bolt can not rotate and its key is normally in register with one of the notches a.

lnconjunction with the above described device we employ a tilting straight-edge 6, having a beveled overhanging edge part f, for engaging the vertical edges of the printing plates, and a parallel beveled edge part g, for registering with the scored guide lines h and z, of the base block j. The said straight-edge is tilted to a desired angle by means of set screws 70, which bear at their I lower ends upon the surface of the block 7'; said straight-edge is also provided with a scored central line 1, which registers with the center of the block when the straightedge is placed thereon.

In the operation and use of the invention, when it is desired to set a plurality of plates, as m, the two end plates of the first row are placed in approximately correct position on the gripper line of the block 7', (one of the horizontal scored lines It). These lines extend parallel to each other over the entire upper surface of the block, but for purposes of illustration we have only shown enough of them to disclose their relation to our invention. Laterally extended guide lines 2',

. are also extended over the block j, at right angles to said lines It. Having placed the said end plates, the straight-edge c, is placed on the block j, with its beveled edge 9, in register with a suitable horizontal guide line it, and its overhanging edge f, contacting with the inside vertical edges n, of the typefaced parts 8, of said plates. Then said straight-edge is fixed on said horizontal guide line by means of suitable plate fasteners, as 32; these may be of any construction of the variety adapted to be clamped and held in arbitrarily required position within the grooves g, of the block j. Having set the straight-edge the inside plates m, of the first horizontal row are placed on the block and moved laterally until the inside vertical edges a, of the type-faced parts 8, of said plates m, contact with the overhanging beveled edge f, of the straight-edge e. The first sliding standard u, of the gage is then adjusted to the zero mark on the scale, and the third standard to, is set at a distance therefrom equal to one-half of the length of the sheet to be printed. The standard 41, is then set at a distance from the standard u, equal to the head margins required for the pages to be printed, and the standard it, is set at an equal distance from the standard w. The gage is now placed over the plates with the guides 2, of the inner standards contacting with the head edges 18, of the type-faced portions of the inner plates, said plates being moved horizontally until their foot edges 19, are equidistant from the scored line 7, of the straight-edge. The two outer or end plates are then similarly set with their head edges 20, contacting with the guides 2, of the outer standards. Plate fas-.

teners p, are then set against the foot and outside edges of the base parts of all four plates and securely clamped in their respective grooves 9. Owing to the fact that the printing plates are alined at their top or type-faced parts, said type-faced parts remain in perfect alinement. Having set the first horizontal row of plates the straightedge is placed and set on a suitable lateral scored line 2', with its overhanging edge f, contacting with the lateral edge 18, of the second plate m, of the said horizontal row of plates. Then the gage is set for registering a lateral row-of plates, and the remaining three plates of said row are placed and fixed in the manner above described. Then the straight-edge is removed, and the remaining rows of plates are set by means of the gages only, the rows being alined and spaced by the guide-plates 2, and the printing plates respectively fastened at the edges opposite to said guide plates. Having thus set all the printing plates plate fasteners are adjusted to their free edges, thus securing them firmly, and producing a perfectly registered and alined form whose plates require no readjustment by the pressman.

While we have illustrated a construction of gage adapted for use on a fiat base-block, it is also susceptible (in slightly modified form) of use in connection with a cylindrical base.

Having thus described our invent-ion, what we claim as new, and desire to secure by Letters Patent, is:

l. A gage for alining printing plates on base blocks, said gage comprising a horizontal rod having a scale thereon, and a plurality of sliding standards supporting said rod and arranged at right angles thereto, each of said standards having an overhanging straight-edged part for engaging the edges of type-faced parts of printing plates, and a parallel base part beneath said overhanging part, for engaging the surface of the base block, substantially as shown and described.

2. A gage for alining printing plates on base blocks, said gage comprising a horizontal rod having a scale thereon, and

notches registering with the graduations of said scale, and a plurality of sliding standards supporting said rod and arranged at right angles thereto, each standard having a lower base part and an overhanging straight-edged part parallel therewith, and means for locking said standards on said rod, in combination with a tilted straightedge having an overhanging upper edge part for engaging the edges of type-faced parts of printing plates, substantially as shown and described.

3. In a gage for alining, registering and spacing printing plates on base blocks, the combination, with a horizontal rod having a scale thereon; of a plurality of standards arranged at right angles across and in slidable engagement therewith, each standard having an overhanging vertically adjustable straight-edged guide plate for engaging the vertical edges of the type-faced parts of printing plates, and means for adjusting said guide plates, substantially as shown and described.

4. As a means for alining, registering and spacing printing plates on base blocks, the combination, with a gage having a scale thereon and notches registering with the gradua-tions of said scale, and a plurality of sliding standards on said rod, each standard having an overhanging straight-edged part, for engaging the edges of the type-faced parts of print-ing plates, and also a spring pressed bolt having a key for engaging said notches, of a tilted straight-edge having an overhanging upper edge part for engaging the edges of type-faced parts of printing plates and a parallel lower edge part for registering with guide line of base blocks, and set-screws for maintaining the straightedge in desired tilted position, substantially as shown and described.

5. In a gage for alining printing plates at their type-faced parts, the combination, with a metal rod having a scored scale and notches registerin with the graduations of said scale; of a plurality of sliding standards each having a spring-pressed bolt, for engaging said notches, and an adjustable guide plate having an overhanging straightedged part, for engaging the edges of typefaced parts of printing plates, and screws for adjusting said guide plates, substantially as shown and described.

In testimony that, we claim the foregoing as our invention, we have signed our names in the presence of two witnesses, this 21st day of April, 1911.

KARL M. SCHLUETER. FERDINAND SCHLUETER, J R.

Witnesses:

N. STERN, BERTRAM H. ROUSE.

Copies of this patent inay be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. (23%