US314040A - Saw-jointer - Google Patents

Description

(No Model.)

G. H. MAYBE.

SAW JOINTER.

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SPECIFICATION lorrriiiig part of Letters Patent No. 314,040, dated March 17, 1885. Application filed November 3, i884. (No model.)

To all whom it may concern:

Be it known that I, Gnnen H. MAYER, of Kansas City, in the county of Jackson and State of Missouri, have invented a new and Improved Saw-Jointer, oi'which the following is a full, clear, and exact description.

The object of my invention is to provide a simple inexpensive implement whereby theteeth of saws may be evenly and accurately 1 0 jointed without danger of spoiling the set77 of the teeth and by the use of either a threecornered or dat file.

The invention consists in a saw-jointer constructed .with a frame having opposite arms spaced apart to admit the saw-blade and connected by a head-piece, and one of the arms having guide-studs fixed to and projecting from its inner face to prevent contact of the frame of the jointer with the saw-teeth at one side, and the head portion of the implement having a tri-form recess made in it, wherein either a three-cornered or a fiat tile may be held by a suitable device-such as a screw-all as hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specificatiomin which similar letters of reference indicate corresponding parts in both the gures.

Figure 1 is a perspective view of my improved saw-jointer drawn full size and as in use in jointing the teeth of a saw-blade by the action of a three-cornered file; and Fig. 2 is a front view of the jointer and cross-section of a saw-blade, the teeth of which are being jointed by a flat file.

The jointer consists, mainly7 of a metallic frame or yoke, A, formed with opposite arms, B C, connected by and pendent from a crosshead, D. The arms lB (l are spaced apart for a sufficient distance, as at E, to admit sawblades F of varying thickness, and directly above the space E, in the lower side or face of the head D, is formed a notch or recess, G,and from the base of said recess and branching laterally toward opposite sides of the jointer are formed in the arms B C the notches or recesses H I, respectively, which together range transverse] y across the head of the jointer. At the inner faeeof the arm B are fixed the guidestuds J J, which project at their inner faces beyond the face of the arm B, so that when the saw-blade F is held loosely against the guide-studs by a screw, K, threaded through the end of the arm C, as seen more distinctly in Fig. 2, the teeth f of the saw will not be struck by the inner upper shoulder or corner, b, of the arm B, as the j ointer is moved backward and forward along the saw-blade for carrying either iile L or M over the ends of the teeth to joint them down evenly and in proper sweep lengthwise of the saw prior to bringing the teeth to a sharp edge by the use of a file; and to hold either file L or M in the jointer I employ a screw, O, which is threaded through the head D of the implement and enters the recess G, so that it may be turned down on the file.

Vhen the threevcornered le L is used, it

will be passed into the tri-form opening G H I until its two upper inclined faces strike the corners -g g of the recess G, and the lower flat face of the tile is pressed against the lower walls or shoulders, h t', of the recesses H l, respectively, and the screw O will be turned down on the upper angle or corner of the file to bind it firmly to the jointer, as shown in Fig. l. The file L may of course be held by the screw O pressing it against the shoulders h c', whether the upper faces of the 4file touch the corners g g or not, as will readily be understood.

Vhen the flat le M is used, it will be passed into the opposite recesses, H l,4 and will be held firmly to the shoulders h i by the screw O, as represented in Fig. 2.

It will be seen that by the use of my iniproved implement the teeth of saw-blades of any thickness or length may be j ointed quickly and accurately by an unskilled person and without danger of destroying the set of the teeth of 9o the saw at one side, as the guards J prevent contact of the jointer with the sides of the sawteeth, and by providing the tri-form recess in the jointer a mechanic may both joint and file his saw with the ordinary three-cornered le usually carried with his tools.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent*- Y 1. A saw-jointer constructed with a frame, A, having arms B C, spaced apart at E and connected by a head-piece,' D, and the arm B, having guards J fixed to and projecting beyond its inner face, the tri-form recess GH IOO I, and with means for securing the iile in the recess and for holding the guards .I closely to the sawblade,substantially as herein set forth. 2. A saW-jointer constructed with a frame, 5 A, having arms B C, spaced apart at E and connected by ahead-piece, D, guards .I on the armB and projecting beyond its inner face, the tri-form recess G H I, and the screws K O, all arranged for operation with either a three-cor- 1o nered or flat ile, substantially as herein set forth.

3. In a saW-jointer having arms B. C, leholding recess, and abinding-serew, the studs

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