US546394A - Saw-gummer - Google Patents

Description

SAW GUMMER;

Patented Sept. 17, 1895.

mummwwl! AN DREW B.GRMMM.PHOTO-UNUWASMNGTDMD,

UNITED STATES- PATENT @Enron BENJAMIN C. BRADLEY AND GEORGE EWING, OF RIPLEY, TENNESSEE.

SAW-GUMMER.

SPECIFICATION forming part of Letters Patent No. 546,394, dated September 17', 1895.

Application filed May 13, 1395. Serial No. 549,052. (No model.)

To all whom t may con/cern.-

Be it known that we, BENJAMIN C. BRADLE and GEORGE EWING, citizens of the United States, residing at Ripley, in the county of Lauderdale and State of Tennessee, have invented certain new and useful Improvements in Saw-Gummers; and we do hereby declare the following to be a full, clear, and exact description of our invention, suchfas will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings.

This invention is an improvement in sawgummers and is especially adapted for gumming crosscut-saws.

The objects of the invention are to provide a saW-gummer which may be rigidly attached tothe saw at any point, and in which the reamer or cutting-tool may be adjusted to cut several teeth after the device has once been clamped to the saw without removing the parts.

The invention has for further objects to provide a saw-glimmer which will be easy of adjustment, readily operated, and of inexpensive construction.

With these objects in view the invention resides in the various novel details of com struction, in the combination of the parts, and in the device as a whole.

The invention is illustrated in the accompanying drawings, in which like letters of reference indicate corresponding parts.

In the drawings, to which reference is hereby made, Figure l is a perspective view ofthe device, showing itin position upon a crosscntsaw. Fig. 2 is a perspective view showing the device detached from the saw, and Fig. 3 shows the details of construction of some of the parts.

In the drawings, the letter A indicates a crosscut-saw, and B the saw-gummer as a whole. The saw-gummer consists of an adjustable bifurcated clamp C, a bifnrcated brace D, an adjustable bifurcated clamp E, a lever E secured to the clamp E by means of a thumbscrew or the like, and the reamerarms G, the reamer H, and the cranks I.

The bifurcated clamp C, the bifurcated clamp E, and the reamersarrns G are all provided with openin gs m arranged to correspond on the opposite portions of each, and these openings are adapted to receive a bolt, a thumb-screw, or the like. These openings are of any convenient distance from each other to facilitate adjustment of the parts to the saw.

The bifurcated brace D and the adjustable bifurcated clamp E are provided with openings in their ends, the brace D having the said openings through the ends of its legs and the clamp E having an opening in its upper closed end, and a bolt K is passed through the said openings and also through any pair of openings, in the reamer-arms G, and has on its outer end a thumb-nut la. By means of the bolt K and the nut 7e, the brace D, the clamp E, andthe rentner-arms G are pivotally secured to each other, with'the bolt K as a center and their adjustment with relation to each otherl and to the saw made easy.

The clamp C is bifurcated nearly its entire length in order to straddle the saw-blade, the legs c being provided with the openings fm, opposite each other and adapted to receive a thumb-screw or the like n. When the clamp C straddles the saw-blade, as in Eig. 1, and the thumb-screw 'n is tightened, the legs c are drawn toward each other and hold the clamp C rigidly to the saw. The clamp C has at its upper closed end a screw-threaded projection c', which is adapted to receive the hand tap or nut L.

The brace D is provided with an opening CZ at its closed end, which opening is sufficiently large to tit loosely over the screw-threaded projection c of the clamp C. As shown in the drawings, this opening d is round, but it may beef any shape and perhaps its best construction would be an elongated oval or slot, The nut L is adapted to press upon and limit the movement ot the brace D.

The clamp E is adapted to tit easily over the saw-blade, its upper closed end resting in one of the depressions between the teeth of the saw. This-clamp E is not made rigid to the saw-blade by means of thumb-screws or the like, as is the case with the clamp C, but the openings min its legs are provided for the pivoting t0 it of the lever F by means of a bolt orQthumb-screw, a number of such openings being provided so that saws of various Widths may be operated upon. This lever F is near its center pivoted to the clamp E by rco the thumb-screwf, and has at oneend the raised portion f provided with a longitudinalv groove f2 on its face for the back of the saw to rest in. The other end of the lever has a screw-threaded vertical opening in it f3, adapted to receive the screw f4, which has loose upon its upper end the restfi", provided with forks f G to receive the back of the saw. By means of the lever F the clamp E may be held rmly to the saw-blade, the upper closed end of the clamp E resting in a depression between the teeth of the saw and the screw to the saw-blade and the clamp E allowed tof rest in one of the depressions between the l saw-teeth. The lever F is given a downward f4 until the whole is tight.

or reamer is now adjusted to the portion of the saw to be gummed and held in place by j depressing the brace Duntil it bears upon f the enlarged vends of the reamer-arms, holding it there by means of the hand tap or nut L. The gumming of the next tooth necessitates the elevation of the brace D and the adjustment of the reamer-arms by means of the bolt K and theopenings m.

Having thus fully described our invention, what we claim as new, and desire to secure by v Letters Patent, is-

1. In a saw-glimmer the combination with thereamer suitably mounted in adjustable arms, of an adjustable frame, adapted to be secured to a saw the said frame consisting of a bifurcated clamp C, a bifurcated brace D, a bifurcated clamp Eand a lever F, all substan tially as and for the purpose set forth.

2. In a saw-gummer the combination with 'the reamer arms of the bifurcated brace D adapted to rest upon the said reamer arms,

the said brace being held in position by the nut L substantially as and for the purpose `set forth.

In testimony whereof we afix our signatures in presence of two witnesses. pull upon the clamp E by turning the screw '7* The cutting-tool i BENJAMIN C. BRADLEY.

GEORGE EWING.

Witnesses:

Jo C. MARLEY, JAMES OLDHAM.

Images