US2225141A

US2225141A - Saw set

Info

Publication number: US2225141A
Application number: US244836A
Authority: US
Inventors: Sr Walter R Williams
Original assignee: Individual
Current assignee: Individual
Priority date: 1938-12-09
Filing date: 1938-12-09
Publication date: 1940-12-17
Anticipated expiration: 1957-12-17

Description

De. 1940. w. R. wlLLxAMs, SR'

SAW SET Filed Dec. 9, 1938 2 Sheets-Sheet l MMMJEE@ INVENTOR BY mgm@ ATTORNEYS Dec. 17, 1940 W 'R WILLIAMS, 5R 2,225,141

SAW SET Filed Dec. 9, 1938 2 S'aets-Sheet 2 INVENTOR ATTO R N EYS Patented Dec. 17, 1940 PATENT OFFICE` SAW SET Walter R. Williams, Sr., Danville, Ga. Application December 9, 1938, Serial No. 244,836

1 Claim.

My invention relates to improvements in saw sets.

An important object of my invention is to provide a saw set that is adapted to clamp the saw blade in position and to set the various teeth thereof at the proper angle.

Another object of my invention is to provide a saw `set that is adjustable to accommodate varying sizes of saws.

Yet another object of my invention is to provide a saw set that is simple in construction, efficient in operation and inexpensive to manufacture.

Other objects and advantages of my invention will be apparent during the course of the following description.

In the accompanying drawings, forming a part of this specification, and in which like numerals are employed to designate like parts throughout the same,

Figure 1 is a side elevation, partly in section, of a device embodying my invention, and illustrating the same in operative position,

Figure 2 is a side elevation thereof,

Figure 3 is an edgeWise elevation of my device,

Figure 4 is an edgewise elevation of the body portion thereof,

Figure 5 is a vertical longitudinal sectional view taken on the line 5-5 of Figure 2,

Figure 6 is a fragmentary View illustrating the saw clamping means embodied by my invention,

Figure 7 is a transverse sectional view taken on the line 1-1 of Figure 6,

Figure 8 is a side elevation, partly in section, of another form of my invention,

Figure 9 is a side elevation of the same and showing its association with a saw,

, Figure 10 is a fragmentary edgewise elevation of the same,

Figure 11 is a transverse .sectional view taken on the line of Figure 8,

Figure 12 is a transverse sectional view taken on the line |2-|2 of Figure 10,

Figure 13 is a fragmentary side elevationof still another form of my invention, and Figure 14 is a transverse sectional view taken on the line lll-I4 of Figurev 13.

While I have shown preferred embodiments of my invention in the drawings, it will be understood that various modifications are contemplated withln the scope of my invention and I do not intend that my invention shall be limited to the particular forms shown.

Referring to Figures 1 to 7, inclusive, of the drawings, the numeral designates the body portion having a saw-receiving slot 2|. The head portion is formed with flat spaced side walls 22 having arcuated arms 23 extending upwardly therefrom and conjoined thereabove in a circular web 24. The body portion is conjoined at the ends 25 by the Webs 25. The web 24 is provided centrally thereof with a slot 26 through which extends a screw or bolt 21A carry-l ing yan anvil 28 interiorly of the said saw-receiving slot 2 I. The anvil 28 has a beveled edge 28 whereby the saw tooth is given the proper set. The bolt 21 is provided with a head 2B 4which is positioned in a countersunk opening in the anvil 28 in amanner to be flush with the inner face of the said anvil. The winged nut 30 15 is carried by the bolt 21 exteriorly of the web 24 to permit the adjustment of the said anvil with respect to the saw blade A. Pivoted between the side walls 22 is a pair of levers 3| and 32, which communicate at their inner ends with the said20 saw-receiving slot 2|. The lever 3| terminates in a cam face 33, which operates in conjunction with and in a direction normal to the beveled face 28 of the anvil 28, as best illustrated in Figure l of the drawings. rninates in a transverse slot 34 in which is pivotally mounted a saw clamping member 35. Seated in the recess 31 is a spring 33 which bears on the under surface of the saw clamping mem-l ber to permit it to be yieldably adjustable`30 with the saw blade and to prevent the saw clamping member from crimping or substantially deforming the blade. As shown in Figure 2, the saw clamping member is normally closer to the flat holding face of the anvil than thei35 cam face 33 is to the bevel working face thereof when the levers are in the open position. The levers 3| and 32 are provided with Shanks 38 projecting from recesses 39 in Which is seated,l the spring 40.

The operation of my device is as follows:

The saw blade A is inserted Within the sawreceivingi slot 2| of the head portion and the anvil 28 is properly adjusted Within the slot 26 to properly coact with the lcam 33 of the lever :'45 3|. The cam face 33 is shaped in a manner to contact the tooth of the saw evenly and firmly and does not press upon the beveled or sharpened edge of the tooth in a manner to dull or break the same. When the levers 3| and 32 are 50 brought together in operative position, the sawclamping member 35 will first engage the plane surface of' the saw blade and firmly hold the same against displacement before the cam face 3 3 of the lever 3| engages the beveled face of the 5,5

The lever 32 ter-:25

anvil 28 to properly Set the tooth of the saw. The cams and 33 move along lines normal to the flat and the beveled faces of the anvil, respectively, to evenly and iirmly grip their respective portion of the saw blade. The spring will force the levers 3l and 32 apart as soon as they are released, thereby preventing any jamming action from occurring between the Saw-setting device and the blade of the saw.

In the form of my invention as illustrated in Figures 8 to l2 of the drawings, the head portion is a solidly formed block il having a saw-receiving slot 42 with spaced arms 43 extending outwardly and upwardly therefrom and terminating in a substantially circular Web 44 through which extends a screw or bolt i5 carrying the anvil 45 which has a varying bevel 46 extending circumferentially around its bottom face to prop-l erly accommodate saws having varying shapes and sizes of teeth. The bottom lower portion of the block ii is provided with bifurcated arms l between which are pivoted the

levers

48 and 49 by means of the pin The block 4i is provided with a forwardly positioned recess iii, which eX- tends vertically from the web El and communicates with the saw-receiving slot l2 through the reduced portion 52. Within the recess 5l is a plunger 53 which terminates at one end in a sawclamping block 555i disposed within the slot 42. The opposite end i of the plunger 53 bears against the face 5S of the lever '33, and adjacent this end is provided an annular iiange 5l. A relatively weak spring is interposed between the said annular flange 5l and the reducedportion 52 functions to ordinarily maintain the saw-holding block l in a retracted position. The rear of the body 4E is provided with a diagonally disposed slot in which is disposed the saw-setting plunger one end of which extends vthrough the reduced portion into the saw-receiving slot 42 and coacts with the beveled working face 45' of the anvil The opposite end il? of the said plunger cooperates with the face G3 of the lever 43 and adjacent the end 52 is an annular flange 54. Disposed between the flange 634 and the reduced portion 6i is a relatively strong spring 65, which functions to ordinarily maintain the plunger in a retracted position. As shown in Figure 8, a plunger is axially movable along a line normal to the beveled working face of the anvil and the plug -i is normally positioned closer to the iiat holding face of the anvil than the inner end oi the plunger @d is to the beveled working face thereof.

In the operation of this form of my invention, the saw blade A is inserted in the saw-receiving slot 42 and the anvil. 45 is rotated until the proper bevel is positioned in alignment with the sawsetting plunger @it When the

levers

48 and 49 are brought together, the

inner faces

56 and 63 thereof will simultaneously coast with the ends and 62 of the plungersV 5i and lit. However, because of the relatively greater resistance offered by the spring 55, the handles will act to first bring the plunger 53 into clamping relation with the saw blade and to thereafter bring the plunger 66 into engagement with the tooth of the saw.

The forni of my inventionl as illustrated in Figures 13 and 14 is substantially the same as that illustrated in Figures 8 to 12 of the drawings. In this form the block 66 is provided with a head portion 61 which has a pair of bifurcated arms 68 embracing the upper portion of the block 66. Extending upwardly from the bifurcated arms 68 are arcuated extensions 69, which terminate in the substantially circular web 10. The anvil 'H having a constant beveled edge 12 is secured to the under side-of the web 1U and Within the saw-receiving slot 13. The plungers 14 and 'I5 cooperate with the cam faces of the

levers

48 and 49 in the same manner as illustrated in the second form of my invention. The plunger 'I4 operates at right angles to the anvil 12, while the saw-setting plunger 15 is provided with a right angularly disposed face 15 which operates at right angles to the beveled edge 12 of the anvil 1l. Adjacent the lower ends of the plungers 'i4 and 'l5 and within the block 66 are transversely extending pins TB. A relatively weak spring 'i8 is interposed between the pin 16 of the blade holding plunger 14 and the upper end of the block t5, and a relatively strong spring 11 is interposed between the pin I6 of the tooth-setting plunger 'l5 and the block, which springs function to ordinarily maintain the plungers 'i4 and 15 in a retracted position.

The operation of this form of my invention is so similar to the second form that no further explanation is thought to be necessary.

It is to be understood that the forms of my invention, herewith shown and described, are to be taken as preferred examples of the same, and that vario-us changes in the size, shape and arrangement of parts may be resorted to without departing from the spirit of my invention, or the scope of the appended claim.

Having thus described my invention, I claim:

A` saw set comprising a body having a saw receiving slot, an anvil disposed within said slot and having a at holding face anda beveled tooth setting face, a pair of axiallyvmovable plungers carried by the body each having a transverse anvil engaging end entering the said saw slot, one of said plungers being arranged to travel normally to the holding face of the anvil and the other of the plungers being arrangedto travel normally to the beveled tooth-setting face thereof, a pair of handle members lying athwart each other and connected to the body by a common pivot, parts of the handles extending at opposite sides of the pivot and engaging the ends of the plungers remote from the anvil, and spring means arranged within recesses in the body and around the said plungers, one end of the springs abutting against the body and the other end thereof contacting parts of the plungers in a manner the plungers normally retracted, the sai s.v `in coacting with the tooth-setting plunger bein/g relatively stronger than the spring coacting with the saw holding plunger-whereby actuation of the handle members will act Ato rst move the saw holding plunger into engagement with the holding face of the anvil and'to thereafter move the tooth-setting plunger into engagement with the beveled tooth-setting face thereof.

WALTER R. WILLIAMS, SENIOR.