US1349614A - Tool for setting the teeth of circular saws - Google Patents

Description

S. P. KAY. ooL FOR SETTING mi TEETH oF cmcuLAR sAws.

Patented Aug. 17, 1920.

UNiTEDs'rATEs PATENT OFFICE- y `Bateman P. KAY, oir` aooHEsrnmNEw YORK, AssmNoalor ONE-THIRD To aUFUs P.

wom', ONE-THIRD ToaNNrE K. ,ALL or aooimsrna, NEW Yoan.

ROWND, AND ONE-THIRD T0 ABETHUSA KAY,

Toor. Foa sErTiNG THE TEETH oF CIRCULAR saws.

Specllleation of Letters Patent.

Patented Aug. 17, 1920.

Application led September 8, 1919. Serial N0. 322,447.

Y 10 all whomz't ma concern Be `it known t at I, SAMUEL P. KAY, -a citizen of the United States, residing at Rochester in the county of Monroe and State of ew York, have invented certain new anduseful Improvements in Tools for Setting the Teeth of Circular Saws, of which the following is a specification.

The object of this invention is to provide a new and improved method and tool for setting the teeth of circular saws.

This and other objects of this invention will be fully illustrated in the drawing, described in the specification and pointed out in the claims at the end thereof.

In the accompanying drawing:

Figure 1 is a side elevation of the saw setting tool as it appears `when clamped to the adjustablefguide of the saw table.

Fig. 2 is a top plan viewof the tool as shown in Fig. 1.

Fig. 3 is across section Yof the arm and pivot pin of the tool, showing how the clamp holds the tool in place on one side of the guide and in line with the saw.

Fig. 4 is a sectional view of the saw setting roller.

Fig. 5 is a sectional view of a modified form of the roller.

Fig. 6 is a detail view of a section of a grooving saw.

Fig. 7 is a sectional view of one of the teeth of a grooving saw after being swaged the section being taken on the line 7"- x o In the several figures of the drawing, like reference numerals indicate like parts.

T'he tool comprises the arm 1 which is made up of Hat bar stock and has the handle 2 formed on one end thereof. The other end of the arm 1 has a bracket 3 fastened thereto to form a fork 4 thereon in which the saw setting roller 5 is mounted to rotate. For this purpose the end of the bracket 3 and the end of the arm have the pivot pin 3^ supported between them on which the roller 5 is adapted to rotate.

The bracket 3 is fastened to the arm l by means of suitable bolts or rivets 6 which project through the bracket near the inner end thereof and pass into the arm 1. A bearing 7 is provided in the arm 1 and bracket 3 at the point where the bracket is fastened to the arm, in which bearing the bolt 8 is mounted to rotate. This bolt is preferably provided with the enlarged, fiat head 8^ which projects out from the side of the arm 1 opposite to the bracket 3. The middle portion of the bolt 8 is adapted to rotate in the bearing 7 while the threaded end thereof, which is of reduced diameter, projects out therefrom to receive the nut 9 by means of which the bolt 8 is held in place in the bearing 7. The reduced threaded end of the bolt provides the shoulder 10 thereon against which the nut 9 is tightened so as not to interfere with the easy rotation of the bolt in the bearing 7. For this reason the shoulder 10 is formed slightly beyond the outside of the bracket 3 so that the inner face of the nut 9 cannot come into Contact therewith and cause friction therewith, which would interfere with the free. rotation of the bolt 8 in the bearing of the arm l.

i Any one of the many forms of clamps, one of which is indicated by reference numeral 11 in Figs. 1, 2 and 3, may be used to clamp the tool in place on the guide 12 of the saw table 13. The clamp 11 is hooked over the guide 12 and its stationary member 14 is placed in contact with the outer face of the nut 9 carried on the bolt 8. The adjustable member 15 of the clamp is then screwed against the outside of the guide 12 so as to force the arm 1 toward the inner side of the guide and securely hold the large head 8 of the bolt against the guide which then forms a stationary pivot around which the arm 1 is adapted toswing.

In order that the handle of the arm can be easily moved up or down, a portion of the arm with the handle 2 thereon is bent out away from the guide 12 so that it can be easily taken hold of by the operator.

The roller 5 has the beveled perimeter 16 by means of which the saw teeth are alternately bent outwardly on either side during the process of setting the teeth of the circular saw with the tool heretofore described. This is done as follows:

The tool is first clamped against the uide 12 of the saw table 13 as shown in igs. 1, 2 and 3. Then the guide 12 is moved over the saw table toward the cir- (fnl-.tr saw mail the distance between the crnter'r f the SWW this ner side of the guide l2 equals the distance between the beveled edge of the roller and the inner side of 'the glllde l2. hejliandle of 'the tool is then raised from tile fhll line position to the dotted line position as shown in Fig. l. In doing so the .beveled .edge of the roller 5 is brought Y'into Contact With the teeth ol" the saw and operates to bend the successive teeth of the'saw in opposite directions to the left or right oi" the saw desk. 'lhat is, one tooth is Jforced over the bevel on the left hand side of the roller-and bent f; :to the left of 'the saw disk and the next tooth is forced over the bevel on the right hand side of the roller and thus bent toward the 'right of the saw disk `until all of the teeth of the saw have been bent `evenly and successively in an opposite direction. After the roller 5 has been held in Contact with the circular saw during one ot the revolutions.y Vall ot" the teeth are set as above pointed out and the roller may be Withdrawn from the saw by rocking the tool back into its inoperative position.

This process of setting a saw is perfermed on all saws of the Cross out Itype on which each tooth is formed in the form of ra small triangle `having `equal sides such as `are shown in the 3h-cular saw illustrated iin Fig. l. The `teeth are set in this manner in order that the cnt made by the saw will be wider than the thickness ofthe disk of the saw.

In the ease of a girooving saw, the teeth of which are formed as shown in Fig. 6, the teeth are not set as above pointed `ont Abut are what is eommonly Called swaged.

For this operation then roller illustrated in Fig. 3b gs ised. instead of being beveled th1s rol er has a slightly' Curved perimeter `Jrovided thereon so Athat when it is brought m Contact with the teeth 'in the saine manner as described in eonn'edtion' with the 'beveled roller the points ofthe teeth are flattened out or syraged thereby as illustrated in Vig. "7.

1 claim:

1. In a tool for setting circular sawsgthe :Gembermtin off-fan term, a roller having a beveled edge on each side of the periphery thereof mounted to :rotate loosely onone end of said wrm, a pivot pin passing through said arm and projecting out on each side thereof, said pivot pin being loosely yrnolrntecl `in said arm, means to hold said pin in place in said arm, and means to clamp said `pin against a stationary member to allow said arm to rook around said pivot pin as the center.

2. Isn a tool for setting circular saws, the combination ol? an arm, a roller having a beveled edge on each side of `the periphery thereof mounted :to `rotate loosely on one end of said arm, a *pi-vot pin passing through said arm and vpmjeoting out on each side thereof,` said pivot pin ibeing loosely mountedy in said arm, means to hold said pin in place' in said erm, means. to clamp said pin against a stationary member to allow ysaid asl-meto rock around said pivot pin as the center, and a handle formed on said arm, said handle being olset from said arm ito vfacilitate the Iraising and lowering of said arm.

ln testimony whereof y'I atl-ix my signature SAMUEL P. KAY.

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