US101982A - Improvement in saw-sets - Google Patents

Description

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ERASTUS Y. CLARK,

0F NEW YORK, N. Y.

Letters Patent No. 101,982, dated A11/ril 19, 1870.

IMPROVEMENT IN SAW-SETS.

l'he Schedule referred to in these Letters Patent and making part Of the Same.

To all whom it may concern Be it known that I, ERAs'rUs Y. CLARK, of the city of New York, in the countyof New York, and State of New York, have invented a new and useful Improvement in Saw-Set; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this speciication. p

This invention relates to new and useful improvements in saw-sets, whereby they are made more perfect, and consequently more useful than they have hitherto been; and

It consists in the 'construct-ion and arrangements hereinafter described.

In the accompanying drawings- Figure 1 represents a vertical central section of'vthev saw-set.

Figure 2 is'a side view of the same. Figure 3 is a horizontal section on the plain z of' figs. l and 2.

Figure 4 is a section of iig. 2 on the line y y.

Figure 5 is a front view, showing theadjustable back and the tooth-guide.

Figure 6 is a detailed view of thepunch.

Similar letters of reference indicate corresponding parts.

A is the stock, which is made of any suitable kind of metal, wlich is removably attached to a bench, table, or other fixture by means of the screw-shank B, or in 'any other substantial or ,suitable manner.

C is-the punch, which works vertically in a mortise in the stock, as seen in fig. 1. This punch is triangular in form, but I do not confine myself to that form. The mortise in which it works is a hole drilled or otherwise made in the stock.

The punch has shoulders which receive the pressure of a spiral spring,r1).

This spring is coniined between the (see iig. 4) and the set-screw F. p

G G is the apron upon which the saw is placed iu setting the teeth.

This apron ishinged to the stockby the rod H, and is made adjustable (or is raised or lowered) by means of the screw I, so that more or less set may be given to the teeth of the saw.

J is the anvil over which the tooth to be set is laid.l

This anvil is faced up on both ends, sothat they may be reversed if necessary. It rests on ashoulder, as seen at K, and may be removed or reversedor its position changed by raising it, with a rod or punch, through the hole L.

guide-screw E M is an adjustable back, the position of which governs the position of the saw upon the apron or of the tooth upon the anvil.

This back is made to move backward or forward by means of the screw N, the thread of which engages with a thread in the back M, so that, by turning a screw, the'back is moved out or in, ascending as the screw is turned, while longitudinal :notion of the screw is prevented by the collar O.

' The end of this screw acts as a guide and support to the punch G. The back side of the punch works in contact therewith, as seen in the drawing.

Attached to the `adjustable back M is an adjustable guide-pin, P, the point of which is intended to justV clear the bed R of the stock. 'lhis pin is adjusted laterally to or from the center of the anvil, ascending to the coarseness or ineness of the saw, and so that it willv enter the angle between the teeth, and thereby adj ust the teeth to be set, one after the other,

-on or above the anvil and directly beneath the punch.

This guide-pin is fastened by the screw S, and, when it is properly adjusted, it is an unerring guide for fixing the true position of the saw-teeth as the saw is fed along under the punch.

For the purpose of adapting the set to very narrow saws, (band-saws for instance,) I form the apron iu two parts, G and The two parts are rebated, and when separated, as seen in iig. 2, the sides of G are reverse, and the rebated portion with the srrew T forms a recess and guide for the saw, as seen.

When Gr is thus reversed it is held in position by one or more screws U in a slot or slots V, so that its position may he raised to suit saws of varying widths.

Having thus described my invention,

I claim as new and desire to secure by Letters Patentl. In combination with a saw-set, the adjustable back M, arranged and operated substantially as and for the purposes described.

2. The adjustable guide-pin I, substantially as and for the purposes described.

3. The arrangement of the screws E F and N with relation to each other, the punch C andv stock A, as

.shown and described, whereby said punch may be adjusted as specified.

The above specification of my invention signed by me this 23d day of February, 1870.

ERASTUS Y. CLARK.

Witnessesi GEO. W. MABEE, ALEX. F'. ROBERTS.

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