US1111904A

US1111904A - Saw-guide.

Info

Publication number: US1111904A
Authority: US
Inventors: Leander A Kahrs
Original assignee: CHARLES W TUCKER
Current assignee: CHARLES W TUCKER
Priority date: 1913-12-10
Filing date: 1913-12-10
Publication date: 1914-09-29
Anticipated expiration: 1931-09-29

Description

L. A. KAHRS.

SAW GUIDE.

APPLICATION FILED DEG;10.1913.

1,1 1 1,904, Patented Sept. 29, 1914.

i li i miwlil INVENTOR, WITN g Leander f7. Kahrs UNITED STATES PATENTOFFICE.

LEANDER A. KAI-IRS, or HnALnsnUnG, CALIFORNIA, nssienonor ONE-THIRD TO CHARLES W. TUCKER, or I-IEALDSBURG, CALIFORNIA.

SAW-GUIDE.

Specification of Letters iatentr Patented Sept, 29, 1914:.

Application filed December 10, 1913. Serial No. 805,743.

To all whom it may concern:

citizen of the United States, residing at Healdsburg, in the county of Sonoma and State of California, have invented new and useful Improvements in Saw-Guides, of which the following is a specification.

The object of the present invention is to provide a cheap and simple device which will guide a saw at any desired angle to material being cut thereby, and which, while holding the saw accurately in a vertical plane, will be convenient in use.

In the accompanying'drawing, Figure 1 is a plan view of my improved saw guide; Fig. 2 is a broken side view thereof; Fig. 3 is a section on the line 33 of Fig. 1.

Referring to the drawing, 1 indicates a plate, adapted to rest upon the material being cut and bent at right angles along a long straight line therein to form a vertical flange 2, adapted to abut against avertical side of said material. Near one end of said plate is removably pivoted ,thereto,by a pivot 3, a flat base 4 of a hard metal, as steel, along a straight edge of which base. is secured thereto by any suitable means an edge of avertical guide plate 6 of a practically non-magnetic metal, as aluminum or brass. The base'4 has, on the side remote from saidplate 6, asemi-circular edge 7 having the pivot 3 as center, and marked with indicating lines 8 and characters 9, and the rear edge of the plate 1, where it passes beneath the base 4, is at the same distance from the vertical flange 2 as is the pivot 3, and thus serves as an indicator, to indicate by its position opposite to the respective indicating marks on the margin of the base, the angle at which the saw guide is being set. Adjacent to and concentric with the semi-circular edge 7 is a semi-circular slot 11 in the base 4, through which extends upwardly a screw 12, firmly secured in the plate 1, and on which, above the base 4, is screwed a milled nut 13. By means of this milled nut and screw, the plate 1 can be clamped at any desired angle with the straight edge of the guide plate 6. By this device when the plate 1 is set upon a board, block or other article to be sawed, with the flange 2 abutting against a vertical side thereof, then, while the plate is rigid in this position, the base 4 can be turned through any desired angle and secured at was not possible,

surface of the latter.

"said' angle, thus moving the guide plate 6 open to the objection that it was a matter of H some difficulty and caused some loss of time to place the saw in such device and in the proper position for making the cut. Such devices have all heretofore had guiding means engaging both sides of the saw, and necessarily been connected with each other at the top. They have therefore necessitated that the saw should be inserted therein either from below or at the near end, and it with such. holding device, to place the saw in position by moving it sidewise into contact with the device. In my invention I have avoided this objection by securing to the guide plate on its side other than that at which the saw out is to be made, a horse-shoe magnet, preferably a permanent magnet 15, of which the poles 16 extend through recesses 17 in the guide plate and are flush with the surface of the guide plate against which the saw moves. The magnet may be secured in any suitable manner, as by screws 14 throughthe guide plate. The saw guide having been placed in position the cutting blade of the saw is placed upon the board, block, or other device to be cut, closely adjacent to the lower edge of the guide plate. The saw is then moved intoa vertical plane, so that it is in close contact with the guide plate along the whole The saw bein of steel completes the magnetic circuit of the magnet 15, which was interrupted by the guide plate of aluminum, brass or other nonmagnetic material and the saw is very firmly held ina vertical plane. At the same time the magnet offers no resistance to the longitudinal movement of the saw.

It will thus be seen that this device possesses the great advantage of holding the saw in a vertical plane when cutting whileit permits the saw to be placed rapidly in position and removed thereforin by moving it sidewise up to, guide.

I claim j p In a saw guide, the combination of a plate and away from, the saw for resting upon the material to be cut and In testimony whereof I have hereunto set having a straight portion for positioning my hand in the presence of two subscribing 10 the plate upon the material, a base pivotally Witnesses. secured to the plate, a Vertical guide plate of a nonmagnetic material secured to the lease,

and a magnet of Whichthe terminal portions Witnesses: extend through recesses in the guide plate L. J HALL, and the poles are flush with its outer surface. G,-. J. FOSTER.

LEANDER A. KAHRS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0.