US542282A - Charles p - Google Patents

Description

.P.ROOD. SAW SHARPBNING TOOL.

(No Model.)

Patented July 9, 1895.

[NYE/V2072 Z WJZWESSE'S flilorney CHARLES P. HOOD, OF LA FARGEVILLE, NEW YORK.

SAW-SHARPENING TOOL.

SPECIF IGATION forming part of Letters Patent No. 542,282, dated July 9, 1895.

Application filed March 28,1895. Serial No. 543,570. (No model.)

To aZZ whom, it may concern.-

Be it known that 1, CHARLES P. R001), a citizen of the United States of America, residing at La Fargeville, in the county of Jefferson and 7 panying drawings State of New York, have invented certain new and useful Improvements in Saw-Sharpening Devices; 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, reference being had to the accomand to letters of reference marked thereon, which form a part of this I specification.

The objectof this invention is to provide a simple, cheap, and durable saw-filing device, which is adapted to be used in combination with a saw-clamp for filing saws, so as to giye the desired pitch and bevel to the teeth thereof. I a

In carrying out my invention I make use of a plate having blocks at each endinto which the toothed edge of the saw passes. the plate having pivoted thereto an adjustable frame, in which the file-holder works, the frame being adapted to be set upon the plate,

I so that the desired bevel to the teeth can be spective view of a saw-filing secured, and the file-holder upon the frame to give the desired pitch, the parts being of simple construction.

In the accompanying drawings, forming part of this specification, Figure 1 a perdevice con- --=-structed in accordance with my mvention,

and Fig. 2 is an end elevation.

A designates an ordinary wotk bench or table, and B the usual saw-clam V O designates a plate of suitable material, which forms the bed of my improved saw-filing device, and to the ends of this plate are riveted or otherwise secured blocks D, which are provided with a slot (1 on a line with the front edge of the bed-plate O, the upper ends of the slots being preferably enlarged to pro vide apertures, as shown. The blocks are not only adapted to hold the bed-plate in engagement with the saw, but also reinforce the plate against bending. One of the blocks is provided with a threaded aperture for the re ceptioni-of a set screw D, which isadapted to bear against the side of the saw below the teeth thereof to hold the filing device in engagement therewith.

At about the center of the bed-plate O is pivotally attached a frame E, consisting of a base 6 and upwardly' projecting members 6' and c The base is provided with a threaded aperture with which engages a thumb-screw F,'the set-screw .set to adjust the pitch of the file.

socket h is of being to one side of-the pivot of the frame, and when turned contacts with the bed-plate, so asto force the other side of the frame against the bed-plate and thus hold said frame securely in any position it maybe The bed plate is also provided with gage-marks or indentationsf on each side of the center of the frame E, by means of which. the proper adjustment can be given to the frame. The longer arm 6 of the frame is provided with a vertical series of apertures e and the shorter arm c has but a single aperture, which is preferably on a horizontal line with the lower aperture in the arm 6 G designates a bar, one end of which is bent to form a loop, the terminal portion being formed into an eye g, and the other end of the bar is flattened to receive a clamp H, having two sockets 7L and 71., both of which are provided with a set-screw. The larger sutficient size to receive the ferruled end of a file-handle, while the socket h is adapted to fit over the ends of the bar G.

In practice the saw to be filed or sharpened is secured between the usual wooden bars or saw-clamp B, which is preferably held by the jawof a vise against a table. The blocks of the bed-plateO are then placed over the saw,

so that the teeth will lie in the apertures in.

said blocks, and the bed-plate is held in en'- gagement with the saw by means of the setscrew D, the bed-plate resting upon the table. The bar G is then passed through the desired apertures in the upwardly-projecting member" ofthe frame E, and said frame is adjusted on the bed-plate so that the file will be held to give the'p'roper bevel and pitch to the teeth of the saw, the teeth being cut. by reciprocating the file, it being obviousthat the file being guided by the frame the position of the same can be adjusted to the proper angle.

The device hereinbefore described is simtoo pie in construction, can be cheaply mannfac tured, and insnres'thepropor filing of the teeth of the saw, and after one tooth has been filed the device is moved forward to operate on the teeth following. i g

} am aware that prior to my invention it has been proposed to pr,0vide a saw-filing de-' vice in which a tile was; held and suitably guided, the means employed for guiding the file being adjustable, and I do not claim such construction, broadly; but- Vhat I claim-as new, and desire to secure by Letters Patent, is f v 1. In asaw filing device, the combination, of a bed-plate having blocks attached to the ends thereof which are adapted to engage with the saw blade, a set screw passing through one of said blocks to impinge against the saw-blade,a frame pivoted to the bedplateand having upwardly-projecting members oneof the members having a vertical se ries 0t apertures and the other a single one,

and means for holdingthe frame'upon the bed-plate; together with a bar one end of which is looped and formed into an eye and. the other end flattened, and a clamp having; sockets into which pass the end of the bar and handle of a file, the point of the file engaging the eye formed on the other end of the bar, substantially as shown and for the purpose set forth.

2. In a saw-filing device, the combination,

of a vbed=plate having blocks for reinforcing end of-the bar being formed to receive the.

tip of the file and the other being partially flattened to receive a clamp, said clamp. being adapted to also eng: ge the ferruled'end of lhe file-handle, subst' itially as shown;

In testimony whereof I affix my signature in presence of two witnesses.

\Vitnesses:

Geo. D. AUGSBERG, B. W. DICKINSON.

CHARLES r. noon.

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