US542656A - Saw-guide - Google Patents

Description

A. M. PINEO.

SAW GUIDE.

lNo Model.)

No. 542,555. Patented July 15, 1895.

Inventor. UJJVLQ/Vwoj MW l AttOr l'eys,

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Witnesses: .655. .fr @a NrTED STATES `lirios..

ATENT SAW-GUIDE.

SPECIFICATION forming part of Letters Patent No. 542,656, dated July 16, 1895.

Application tiled April 23, 1895. Serial No. 549,862. (Nomodel.)

To tl whom 25 may concerti.-

Beit known that I, AUBREY M. Piano, a citizen of the United States, residing at Grard-l ner, in the county of l/Vorcester and State of Massachusetts, have invented a new and useful Improvement in Saw-Guides, of which the following is a specitication.

My present invention relates to saw-guides, and has been especially designed as an improvement upon the device for which Letters Patent of the United States were granted to me August 7, 1894, No. 523,994.

The objects of my invention are to provide a pair of side guides, each having a plurality of bearing-facesof different widths, and which may be adjusted to present their different faces to co-operate with the saw, and to pro` vide improved means for adjusting and securing the ball-bearings.

To these ends my invention consists of the parts and combinations of parts, as hereinaf- 1er described, and more particularly pointed out in l[he claims at the end of this specification.

In the accompanying drawings, Figurel is a perspective View of a saw-guide constructed according to my invention. Fig. 2 is a sectional view taken on the line 2 2 of Fig. 3. Fig. 3 is a sectional view'taken on the line 3 3 of Fig. 2, and Figs. 4 and-5 are detail perspective views to be hereinafter referred to.

Referring to the drawings and in det-ail, A designates a base-plate or support. Threaded into the base-plate A, near its lowerl edge, is a stud C, which is slabbed away upon one side, and serves as asupport for one ot' the side guides, as 23. Also threaded into the base-plate A is a stud J, havingan annular head'or shoulder formed at its outerend. Fitting upon the stud J is a collar L, which is cut oft at an incline, as shown, to form an annular shoulder corresponding with the head oi' the stud J. Also mounted on the stud J and turning upon suitable balls P,which are secured in place between the collarL and the yhead of the stud J, is a rotatable disk Q, which forms a guide for the rear edge of the saw. A second side guide 22 is adj ustably supported on the outer end of the stud J. These parts may be of substantially the construction Vto engage with the saw, and in practiceI preferably make said bearing-surfaces of different widths to co-operate with various widths of saws which may be employed.

One edge or bearing-surface of the guide, f

as 25, may be left substantially plain. The edge 26 is slightly beveled or cut away to present a somewhat-narrower bearing surface, and the edges 27 and 2S are beveled oft to a greater degree, thus providing a side guide having bearing--surfaces of four different widths. The side guide 22 is adjustably clamped in position upon the end of the stud J by means of a screw V and a washer U. In a similar manner the side guide 23 is adjustably clamped on the end of the stud D by means of the screw F andthe vwasher G.

To provide means for lubricating the bearing of the disk Q, I preferably form an oilchannel 18 in the base-plate A. The oilchannel 1 S maybe provided with a suitable cap or cover 19 and leads into an annular groove 2O formed in the base of the collar L, as most clearly illustrated in Fig. 2. The annular groove 2O is connected with the ball-chamber by means of oil-passages 21, and by means of this construction it will be seen that the ballbearings can be freely oiled and kept in good working` condition.

As shown most clearly in Fig. 3, it will be seen that the base-plate A is provided with a slot or cut 16, which extends down from the threaded stud J. A clamping-screw 17 is threaded at its inner end into the base-plate A and may be turned to securely clamp the stud J in its adjusted position. I consider this securing device an important feature in practice, as it will be seen that the ball-bear- IOO ings can be accurately adjusted or tightened by screwing up the stud J and can be securely fastened in place by the screw 17, so that they Will not work loose or be affected by the operation of the guide.

The clamping device which I preferably emlploy for securing the saw-guide upon the ma` device can be taken `off byremoving the `screws 11 and12, and other means foi-securing the guide in place 4may be employed.

I amgawarethat changes may be ymade in thefconstructionof my saw-guide by those who are-.skilled in theart, and I do not wish, therefore, to be limited to the construction which Ilhave shown and described; but

What Iido claim, and rdesire to secure by 4Letters Patent of the United lStates,is-

1. In a saw guide,the combination ofa guide for the rearedge ofthel saw,.a pair ofsideguides, said side-guides having bearing surfaces of different widths, and means for adj ustably clamping said side-guides in position to present the desired bearing surfaces to the saw, substantially as described.

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2. Ina saw-guide, the combination of a-baseplate, studs projecting from said base-plate, a disk journaled on one of said studs to form a-guide for the rear edge of the saw, a pair of rectangular side-guides having their edges beveled to form bearing surfaces of different widths, and screws tapped into said studs for adjustably securing said side-guides in place, substantially I as described.

3. In asaw-guide, the combination of a base plate, a stud threaded into said base-plate, a rotatable dislrmounted on said stud,' ball ybearings for said disk, said bearingsbeng arranged so that they may be adjusted by screwing upsaid stud, and a clamping screw for clamping said s tud in itszadjusted position, said clamping screw being threaded into thebase-plate, and arranged transversely to a slot therein, substantially as described.

In testimonywhereof I have hereunto set mykhandin the presence of two subscribing witnesses.

AUBREY M. PINEO.

Vitnesses:

MARTHA H. BURRAGE,

AURELIA B-URRAGE.

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