US930035A - Saw-handle. - Google Patents

Description

R. D. BQWER. SAW HANDLE.

APPLIOATIoN FILED Dm so., 190e.

930,035. Patented Aug. 3, 1909.

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UNTTED STATES PATENT OFFICE.

RICHARD D. BOWER, OF OAKVILLE, WASHINGTON.

SAW-HAND LE Application filed December 30, 1908.

To all whom 'it may concern:

Be it known that I, RICHARD D. Bowen, a citizen of the United States, and a resident of Oakville, in the county of Chehalis and State of Washington, have invented a new and lm* proved Saw-Handle, of which the following is a full, clear, and exact description.

This invention relates to certain improvements in the fastening means employed for securing saw handles to cross-cut saws, and the special object of the invention is to so construct the fastening means that the parts cannot become accidentally loosened, which presents no obstructions or sharp points which might injure the hand of the workman; and which can be readily disassembled to permit the removal of the handle.

The various dilerent elements going to make up my improved fastening means have been used heretofore in devices for similar pur oses, but by combining them in the particu ar manner herein described in detail, l produce a device possessing many advan* tages over any heretofore employed and with which l am familiar.

Reference is to be had to the accompanying drawings, forming a part of this specication, in which similar characters of reference indicate corresponding parts in all the figures, and in which- Figure 1 is a erspective view of a fragment of a saw b ade, showing my improved fastening means employed for securing the handle Fig. 2 is a vertical section through the fastening means and handle, said section being taken on the line 2-2 of Fig. 3 Fig. 3 is a transverse section through the fastening means, a portion of said section being taken on the line 3-3 of Fig. 2; andV Fig. 4 is a transverse section on the line 4 4 of Fig. 2.

My improved fastening means is employed for securmg an ordinaryhaudle10 to the blade of a saw 11, to hold the two rigid in respect to each other', and the fastening means embodies four separate elements, namely, a shank 12, a guard and back brace 13, a nut 14, and a wedge or slide 15. The body of the shank constitutes a threaded bolt slit at its outer end to form two branches 16 and 17 disposed upon opposite sides ofthe saw blade and rigidly secured thereto by a rivet or bolt 18. The outer surfaces of the two branches adjacent their free ends, are preferably cut away, so that the ends of the bolt or rivet 18 do not project beyond the plane of the surface of the bolt. The end of the shank op- Speccaton oi Letters Patent.

Patented Aug. 8, 1909.

Serial No. 470,034.

posite to the branches 1G and 17, is formed integral with a collar 19, throu lh which the handle 1() extends, so as to ho d the latter substantially parallel to the end of the saw. The back brace or guard 13 is in the form of a collar 2() encircling the bolt closely adjacent the edge of the saw and having upwardly and downwardly-extending arms 21 and 22 disposed in diametrically o posite directions and grooved to receive tlle saw edge. The wedge block 15 lies in the plane of the saw blade and in the slot through the bolt, and is movable longitudinally of said slot toward and from the saw. The wedge block is formed of slightly greater thickness at its upper and lower ends than it is at the center portion, so that it cannot drop out of the slot, and can be inserted or removed only when the shank or bolt is detached from the saw blade. The wedge block engages within a vertical slot in the side of the collar op osite to the saw, and thus prevents the co lar from rotating, even though the arms 21 and 22 connected to said collar be out of engagement with the saw. The nut 14 is threaded on the bolt intermediate the wedge block and the handle, and is preferably a wing nut or butterfly nut, which may be readily turned with the ngers and without necessitating the employment of a wrench or other tool.

The main feature of my improved fastener" is the block or slide 15, disposed intermediate the brace or guard 13 and the nut 14. 1f this slide were omitted, then the tightening of the nut 111 into engagement with the collar 20, would tend to rotate the collar in. the same direction as the nut, and this would tend to twist the saw blade in respect to the handle. Furthermore, as the collar engages with the saw only along a vertical line, the tightening of the nut would tend to distort the collar at the unsupported portions of the latter. By the use of the slide 15, the rotation of the nut produces no tendency to rotation on the part of the collar 20 of the brace; the pressure is applied to the brace along a vertical line and directly opposite to the line of contact between the brace and the blade.

Having thus described my invention, l claim as new and desire to secure by Letters Patent:

1. The combination with a saw blade and a handle, of a fastening means including a bolt or shank provided with a slot to receive the blade, and a collar to receive the handle, a guard or brace encircling said shank and engaging with the edge of the saw and having T blade, and having a groove or slot in the side a groove or slot in the side thereof opposite to thereof o posits to said saw blade, a slide eX- 15 said saw blade, a slide movable within said l; tending etween said branches and within slot and within said groove or slot, and a nut said groove or slot and in the plane of the threaded on said bolt and movable longitudiblade, and a nut threaded on said shank and nally thereof into engagement with said slide. movable into engagement with said slide.

2. In combination7 a saw blade, a handle, In testimony whereof I have signed my fio a bifuroated shank secured to said handle l naine to this speoication in the presence oll and having branches disposed upon opposite two subscribing witnesses. sides ol' the saw lade, means for securing l RICHARD D. BOVER said branches to said blade, a collar encircling said shank and movable longitudinally thereo'lI into. engagement with the edge oi the Witnesses:

LE. RoY MYERS, D. W. BAGsHAw.

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