US1741850A - Crosscut-saw jointer - Google Patents

Description

Dec. 31, 1929. T. c. LA BAIQE CROSS-CUT SAW JOINTER Filed July 12, 1927 Patented Dec. 31, 1929 THEODORE 0. LA BARE, F SEATTLE, WASHINGTdN onossou'r-sAw JOIN'IER Application filed July 12, 1927. 'Serial No. 205,250. 1

The invention is a saw jointer that is readily adjustable to saws of different sizes or of any curvature and is so constructed that each part is rigidly andpositively held.

The object of the invention is to provide a saw jointer that may readily be adjusted to saws having different curvatures and may be rigidly held in the various positions.

Another object of the invention is to provide a saw ointer in which the curvature of the guides that rest upon the teeth may be veryaccurately adjusted.

A; further object of the invention. 1s to provide a saw jointer which is durable and efficient and or a simple and economical construction.

With these ends in view theinventlon em-. bodies asaw jointer made with a rectangular shaped back plate having projecting lugs be tween which a file may be adj ustably held and to which the inner ends of spring guards may beheld, an adjusting screw for adjusting the file upward or downward, and other ad usting screws for moving the free portions of: the spring guards upward or downward, said adjusting screws beine adaptable to hold the file and guards rigid.

Other features and advantages of the 1nvention will appear from the following description, taken in connection with the drawings, wherein:

Figure 1 is a front View of the device.

Figure 2 is an end view of the devlce.

Figure 3 is a cross section through the center showing an alternate means for holding the file.

Figure 4 is a View somewhat slmilar to that shown in Figure 1 in which the portion on one side of the center is used only so that the file will be held at the end of the spring guard instead of between two of the spring guards.

In the drawings the device is shown as 1t would be made wherein numeral 1 indicates the back plate, numeral 2 the spring guards, and numeral 3 the file.

The plate 1 may be of any suitable shape or design and may be of any suitable size. In the design shown it is of a rectangular shape with the spring members 2 attached to it through lugs 4 at their inner ends and ad justably held at their outer ends by yokes 5 i which are held in bearings 6 and the bearings 6 are pivotally held to the plate 1 by bolts 7.

It will be observed that the yokes 5 are attached to lugs 8 on the upper side of the spring 'members with pins 9 and the yokes are provided with upwardly extending bolts 10 with nuts 11 which are located in openings 12 in the members 6. It will be observed that by turning the nuts 11 it will be possible to move the bolts 10 upward, and thereby adjustthe curvature ofthe spring members 2. It is understood that as many of the adjusting members formed by the yokes 5 and bearings 6 may be used with each spring member as may be desired. It will be noted that in Figure 4 ,this spring member is considerably longer and is held by more of these supporting members, however, it w1ll be understood that a greater or lesser number may be used as may be. desired. It will also be understood thatthe spring members may be of any suitable size and may also be adj ustably held by any other suitable means.

The file 3 is placed upon projections 13 from the lugs 4 an d resiliently clamped downward by a thumb screw 14 which is threaded in a lug 15 on the face of the back plate 1. It will be observed that by screwing the threaded screwdownward it will be possible -to force the central part of the file downward until it engages the top of the saw teeth.

It will also be observed that the file may be held as shown in Figure 3 with a clamp 16 having a lug 17 at one end and a nut 18 on a threaded shank 19 at the other so that the nut may be screwed against the edge of the file to clamp it in place. The clam 16 also has a vertical threaded stem 20 which extends upward through a lug 21 and has a nut 22 thereon so that as the nut is turned, the file may be raised or lowered. It is also understood that the clamp 16 may be threaded and provided with nuts at both ends and the file held between the nuts, or any other suitable means maybe used foradjustably holding the file,

of the said saw teeth and against which a saw may be placed, as shown in Figure 2, so that the saw will engage the central part of the file.

In the design shown in Figure 4 one side of the device is removed and the other side lengthened so that the file is positioned at one end of one of the spring guards instead of between the guards. In this design the spring guard 2 is shown with the inner end comparatively thick and tapering so that it is comparatively thin at the outer end. It is understood, however, that even in this design the guards may be made of the same thickness throughout as shown in'Figure 1 and also that the guards in Figure 1 may be made tapering, as shown in F gure 4 if desired. It is understood,also, that as many of the yokes 5 and bearings 6 may be used in this design as may be desired.

It is understood that other changes may be made in the construction without departing from the spirit of the invention, one of which changes may be in the use of other means for attaching the spring guards or file to the plate 1, another may be in the making of the space for the file longer or shorter so that a longer or shorter filemay be used, and still another may be the use of other means for ad'usting the position of the spring guards.

he construction will be readilyunderstood from the foregoing descri tion. To use the device it may be assemble as shown in Figure 1 and when it isplaced upon the cross-cut saw the spring guards 2 may be first adjusted to the curvature of the saw by turning the 'nuts 11 and then the file may be adjusted until it engages the saw teeth so that it will be observed that it will be possible to attain very accurate adjustments and at the same time have every member rigidly held.

Having thus fully described my invention what I claim as new and desire to secure by Letters Patent, is:

1. In a device of the class described, a plate,

a spring member attached to the face of the said plate and positioned perpendicularly thereto, means for adjusting the curvature of the said spring member by adj ustably holding the member at a plurality'of points, means for holding a file adjacent to the said spring member and means for adjusting the position of the file.

2. In a cross-cut saw jointer, a plate having ribs at the lower end adaptable to engage the side of a saw, spring guards held at a plurality of points on the face of the plate to rest upon the saw teeth, and means for holding a file on the said plate to engage the upper ends means for adjusting the position of the file.

8. In a cross-cut saw j ointer, ribs extending perpendicularly therefrom, spring guards also extending perpendicularly from the plate and lengthwise thereof, the inner ends of the a plate having said spring guards spaced apart and attached to the said plate, means for adjustably holding each of the said spring guards at a plurality of points, and means for holding a file between the inner ends of the said spring guards.

at. In a device of the class described, a plate, spring guards on the face of the plate with their inner ends attached to it, adjustable means for holding each of the spring guards at a plurality of points, means for holding a file between the said guards and means for adjusting the position of the said file.

5. In a cross-cut saw jointer of the class described, a plate as described, a file supported on the face of the said plate and perpendicular thereto, means for adjusting the position of the file, suitable spring guards extending from the file to the ends of the said plate, the inner ends of the said spring guards being held stationary, and means for readily adjusting the positions of the outer ends to the curvature of the periphery of saw teeth, said adjusting means positively gripping the said spring members and adaptable to move them upward or downward with a positive movement.

6. In a saw jointer of the character described, a plate as described, a file adjustably attached to the face of the plate and perpendicular thereto, suitable spring members extending from the ends of the said file to the ends of the said plate, and means for adjusting the positions of each of the said spring members and holding them at a plurality of points.

In testimony whereof I aflix my signature.

THEODORE C. LA BARE.

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