US173866A

US173866A - Improvement in saw-file guides

Info

Publication number: US173866A
Authority: US
Publication date: 1876-02-22
Anticipated expiration: 1893-02-22

Description

E. ROTH. SAW FILE-GUIDE.

No.173,866 l Patented Fe'b. 21,1876.

wnuessml v Inventos.

ATTUBNEYS.

NITED STATEs PATENT FFICE ELIAS ROTH, OF, NEW OXFORD, PENNSYLVANIA.

IMPROVEMENT IN SAW-FILE GUIDES.

Specification forming' part of Letters Patent No. 173,866, dated February 22, 1876; application filed December 11, 1875. l

To all whom it may concern.-

Be it known that I, ELIAS ROTH, of New Oxford, in the county of Adams and State of Pennsylvania, have invented a new and Improved SaW-File Guide, ot' which the following is a specification:

In the accompanying drawing, Figure l represents a top view of my improved saw-tile guide; Fig. 2, a side elevation, partly in section,on line c c, Fig. l; Fig. 3, a side view of the indicator for setting the tile to the desired pitch; and Fig. 4, a vertical-transverse section of the guiding device on the line a: fr, Fig. 1.

Similar letters o f reference indicate lcorresponding parts.

My invention relates to improvements in saw-tile guidin gap paratus, by which each tooth on the saw maybe producedwith the same bevel and pitch, and be reledaceurately at anytime with the same bevel and pitch, 'so that the saw cuts evenly-and effectively throughout its full length.

The invention consists in 'an adjustable indicator placed on a sliding rod and tile, in order to set the latter to the pitch required for the, teeth.

In the drawing, A represents a straight or aro-shaped clamp of sufcient length, into which the saw-blade is clamped by means of a vise, screws, or otherwise. The clamp A is provided with longitudinal side grooves a, at some distance below its beveled edges, for the purpose of guiding the bed or frame B, that extends in yoke-shape over the clamp, and

runs, by end studs or rods b, in the grooves a.

rI he bed B supports, by lugs or flangesd at one side, and a set-screw, d', at the opposite side, the graduated ring or circle C, which is readily adjusted to any angle on the bed by means of an indicator, e, of the same, so that thereby the tile may be set to any desired bevel of the teeth. A tile-guiding rod, D, passes through diametrical holes of ring O, and carries thele-holdin g arms E,attached adj ustably thereto by clamp-screws f. One of the lesupporting arms E has a ferrule of sufcieut size to allow the insertion of the tile, which is rigidly secured thereto at the handle-ferrule by a clamp-screw, g, the other arm being provided with a socket-hole for the tapering end of the file.

Byloosening the clamp-screw g of the le, the same may be readily turned, so as to give any desired pitch to the teeth of the saw.

An indicating or pointing device, F, with a recess, It, at one end, and a pivoted piece, Ii', with straight lower edge, made adjustable to a graduation at the mainpart, at the other end, is placed on the slide-rod D and the lile, as shown in Fig. 1, andthe lile then turned in the arms, to be acjusted to the inclination of the pivot-piece hf, and give thereby, at all times, a correct pitch to the teeth when either a nevir edge of the file is to be used or an entirely new tile inserted.

The guide is applicable to circular as well as straight saws, the clamp being in the former case of circular shape, and the guide rods or studs of the bed-frame heilig made of arcshape, to slide in the grooves of the clamp.

After the bevel of the teeth is set on the .graduated ring, and the pitch by means ot' the indicator, the clamp-screws are tightened and the teeth tiled at one side. For liling the other side ot' the teeth, the sliding frame is Ataken out ot' the grooves and changed to bring the le to the other side of the saw. The sliding frame is then re-inserted into the grooves, and thel file set to the same bevel and pitch of teeth as before. rlhe lle will then give to each tooth the same bevel and pitch on both sides, producing the effective cutting of the saw throughout its length.

By pivoting the rod D of tile-frame in the ring O, I am enabled to raise the front and depress the rear of lile on the forward movement thereof', so as to always cut the forward or cutting-edge of tooth to a greater bevel than