US1158852A - Base. - Google Patents

Description

J. P. RICHARDSON.

BASE.

APPUCATION FILED FEB. 4. l9l5. 1,15,52. Ilatented Nov. 2, 1915.

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Patented Nov. 2, 195.

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J. P. RICHARDSON.

BASE.

APPLICATION FILED FEB. 4. 1915.

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JAMES P. RICHARDSON, OF MANILA, PHILIPPINE ISLANDS.

BASE.

Application filed February 4, 1915;

To all whomz't may concern:

Be it known that 1, JAMES P. RICHARDSON, a citizen of the United States, residing at Manila, in the island of Luzon, Territory'of the Philippine Islands, have invented certain new and useful Improvements in Bases; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in bases for the various types of printing plates and to the method of producing same.

The efliciency and commercial value of bases for printing plates depends upon their cost, weight, degree of permanence with which it retains its original form and dimensions, and the ease with which printing plates may be attached thereto. The principal objections to wood bases that are most commonly used is that same will not retain their original form under varying conditions and treatments, warping being the most common change and objection; while bases formed of metal utilized to overcome the change of-form prevalent in wood bases are unsatisfactory because of their greater cost, greater weight, and the difiiculty experienced in attaching the printing plates thereto.

It is therefore the object of the present invention to provide an improved form of base which combines the advantages and eliminates the disadvantages of the wood and metal bases now in common use.

To this end I provide a base for printing plates whose cost will be at a minimum for the efficiency secured; whose weight, while greater than ordinary wood bases, will be less than that of a metal base; whose permanence of form will be retained under ordinary conditions and treatment; whose composition is such that printing plates may be attached, or mounted, by all methods utilized in attaching printing plates to either wood or metal bases, whose composition is such that it may be machined in any form or man ner by either woodworking or metal working machines; and whose composition is such that it may be made any size shape or form for any or all class of product.

A further object of the invention is to provide for making a single base out of a plurality of sections whereby the necessity of having one piece material of the required dimensions is obviated, and further enabling Specification of Letters Patent.

Patented Nov. 2, 1915.

Serial No. 6,117.

the base to be constructed by utilizing small pieces of waste material.

l/Vith the above and other objects in view the invention consists in the details of construction and in the arran ement and combination of parts to be hereinafter more fully described and particularly pointed out in the appended claims.

In describing the invention in detail reference will be had to the accompanying drawlngs wherein like characters of reference denote corresponding parts in the several views, and in which Figure 1 is a plan view of a base for printing plates constructed in accordance with the invention; Fig. 2, a plan view of the base before the grooves have been filled with metal; Fig. 3, a section on the line 33 of Fig. 1; Fig. at, a sect-ion on the line M of Fig. 1; Fig. 5, a plan view of a modified form of the invention; Fig. 6, a section on the line 6-6 of Fig. 5; Fig. 7, a section on the line 77 of Fig. 5; Fig. 8, a plan view of one of the units constituting the base shown in Figs. 5, 6 and 7; Fig. 9, a section on the line 99 of Fig. 8, and Fig. 10, a section on the line 10-10 of Fig. 8.

Referring to the drawings and particularly to Figs. 1 to 4 the improved base is shown as comprising a single block of wood A although any other suitable non-metallic material may be employed. One of the major area faces of the block is provided with a plurality of longitudinal grooves 15 and a plurality of transverse grooves 16 said grooves intersecting each other. The other major area face of the block A is provided with a longitudinal groove 17 and a pluralitv of transverse grooves 18 intersecting the longitudinal groove and being disposed in staggered relation to the transverse grooves 16. The edge faces of the block A are provided with a continuous groove 19 and the grooves 15, 16, 17 and 18 are of sufficient depth to communicate with the groove 19. The grooves 15 and 16 and the grooves 17 and 18 are of sufficient depth to intersect each other at their point of crossing. The grooves 16 and 17 are of sufficient depth to intersect each other at their point of cross ing.

From this construction it will be obvious that the various grooves and passages heretofore referred to are in communication with each other. All of the grooves and passages formed in the block A have disposed therein a filler of suitable metal 23 and as the grooves and passages are in communication wlth each other'it will be obvious that the relnforcement of metal resulting 1s a continuous integral member having substantially said grooves being disposed at right angles to each other and of sufficient depth to intersect at their point of crossing. The edge faces of each unit 13 haveformed therein a continuous groove 26 and the grooves 24 V and 25 are of such depth as to communicate I with the groove 26. In producing the base from the unit B the latter are cemented to gether edge to edge with the grooves 24, 25 'and 26 of one unit in registration with the corresponding grooves of adjacent units. In this way the block A vis formed with grooves in the various faces thereof and with said grooves in communication with each other. units Bare then provided with a filler of metal 27 to form the necessary reinforcing metallic frame. With a base constructed in this manner it will be obvious that small The various grooves of the pieces of waste material can be utilized to advantage Without sacrificing the efiiciency of the resulting base i 7 While I have described and illustrated two forms of carrying my invention into practice it will be obvious that various changes in arrangement and details of construction may be resorted to without in any manner departing from the scope of the claims and I therefore desireit to be understood that the invention is in no way limited to the precise forms illustrated and described.

What is claimed is 7 1. A printing plate base comprising a nonanetallic body formed of a plurality of independent sections each of which has communicating grooves formed in various faces, the grooves of one section being disposed in registration with corresponding grooves in adjacent sections, anda metallic filling in said grooves.

2. The method of forming bases consisting of provi'ding a plurality of sections with communicating grooves in variousfaces, securing saidsections together edge to edge with the grooves of one section in registration with; corresponding grooves of adjacent sections; and then filling said grooves with metal.

In testimony whereof; I signa ture, in the presence of two witnesses} Witnesses:

-A. L'. WooLr, 7

JOHN H. VMCQU'ERRY.

printing plate JAMES P. RICHARDSON;

Copies of this patent may be obtained for five cents each, by addressing the flominissionerof Patents.

Washington, I). C. i i i

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