US176785A

US176785A - Improvement in saw-tables

Info

Publication number: US176785A
Authority: US
Publication date: 1876-05-02
Anticipated expiration: 1893-05-02

Description

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, SAW-TABLE. 110.176,785'

Patented May 2,1876. "vg.'\

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N. PETERS. PHOYWLITKOGRFHER, WASHINGTON. 0 CV UNITED STATns PATENT OFFICE.

JOHN HOLT, OF LOWELL, MASSACHUSETTS.

r IMPROVEMENT IN SAW-TABLES.

Specification forming part of Letters Patent No. 176,785, dated May 2, 1876; application filed April 3, 1876.

To all 'whom it 'may concern:

Be it known that I, JOHN HoLT, of Lowell, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Saw-Tables for Sawing RegularForms, of which the following is a specication: v

My invention relates to a new and improved device for cutting certain kinds of regular forms,the object of my invention being to provide suitable mechanism, so that any number of forms may be quickly and cheaply made of exactly the sameshape and size.

My invention is chiefly applicable to the cutting of wooden stars, used as dies in the manufacture 0f ags, the process of dyeing the field requiring a large number of dies,

which lnustvcoustantly be renewed, and which illustl be of exactly the same size.

Heretofore it has been foundl exceedingly difficult and expensive to make these dies true, so that in the process of dyeing the field the edge of the star will not be blotted or blurred.

My invention is intended to overcome this difficulty; and consists in placing a pattern upon a saw-table, upon which is placed the wooden block to be formed into the die. This pattern is so placed relatively to the saw that one side of the pattern shall be in a straight lille with the plane of the saw. The alternate sides 0f the star or other forms are then cut according to the pattern, when the block is turned and reset by means of a guide and the other sides cut, as hereinafter described.

In the drawings, Figure l is a top view of a movable santable, showing the guide .and block 'placed upon the pattern. Fig.2 is a top view with the block removed. Fig. 3 is a side view.

A is a pattern, which is placed upon a post, c, sothat one side will be in a straight line with the plane ofthe saw,.and as the pattern is turned around each alternate side will be brought in the same plane. G is a spring, so placed upon the sliding table H that the notch e will catch each corner of the pattern, and prevent any lateral motion of it and the block. D is the guide-holder, in the top of which is a groove cut longitudinally, in which the guide E slides. I show this guide in the drawing iu the same vertical plane with the saw 5 but the holder may be placed inany other convenient position if the groove is in the same plane with the side of the pattern. When the alternate sides are cut, and the block turned upon the post, before it is pressed down upon the points a a the guide is pressed into the cut made by the saw. By this means the block is quickly set perfectly true upon the pattern.

A block of any required thickness is placed over the pattern upon the post c, and is held rmly in its place by the points a a. The saw-table H, which may be gagedn to move forward any required distance, is then pushed ahead, and one side cut by the saw F. The

pattern, carrying the block with it, is then the saw, as shown in Fig. 2, while the block is pressed down upon the points a a to bring it to the rightposition, when the guide is drawn back, and the other alternate sides of the star are cut in like manner. The post c is set upon a movable plate, G, which may be readily ad? justed to any size of pattern by means of the slot and screw d.

In the drawings I show a sliding table; but

my improvements are equally applicable to a ,l

stationary table and movable saw. A

l claim as new and of my invention- 1. The combination of the pattern A, springcatch C, and table H, substantially as described.

2. The combination of the pattern A, table H, and sliding guide E, substantially as described.

3. The combination ofthe adjustable pattern-stud c with the table H, pattern A, and spring-catch C, substantially as described.

JOHN HOLT.

Witnesses:

' E. S. MI'FLAN,4

J. N MARSHALL.