US2528925A - Machine for automatically setting and truing the ends of the teeth of saws - Google Patents

Description

Nov.'7, 1950 v A. VIGNEAU 2,528,925

MACHINE FOR AUTOMATICALLY SETTING AND TRUING v THE ENDS OF THE TEETH OF SAWS Filed Jan. 8, 1946 6 Sheets-Sheet 1 FIG. 1

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Nov. 7. 1950 A. VIGNEAU MACHINE FOR AUTOMATICALLY SETTING AND TRUING THE ENDS OF THE TEETH 0F SAWS GSheets-Sheet 2 Filed Jan. s, 1946 Nov. 7, 1950 I A. VIGNEAU 2,528,925

MACHINE FOR AUTOMATICALLY SETTING AND TRUING v THE ENDS OF THE TEETH 0F SAWS Filed Jan. 8, 1946 6 Sheets-Sheet 3 FIG .3

Nov. 7, 1950 A. VIGNEAU 2,528,925

MACHINE FOR AUTOMATICALLY SETTING AND TRUING THE ENDS OF THE TEETH 0F SAWS Filed Jan. 8, 1946 6 Sheets-Sheet 4 d w I I m 22 k 2 h \\(D l. ln A p q 3 P y m & m '4 5 m V v I O In n wmfiz:

Nov. 7, 1950 A vlGNEAU 2,528,925

MACHINE FOR AUTOMATICALLY SETTING AND TRUING THE ENDS OF THE TEETH 0F SAWS Filed Jan. 8, 1946 6 Sheets-Sheet 5 l @Wlz Nov. 7, 1950 A. VIGNEAU 2,528,925 MACHINE FOR AUTOMATICALLY SETTING AND mums THE ENDS OF THE TEETH 0F SAWS Filed Jan. 8, 1946 6 Sheets-Sheet 6 o o o E (9 Patented Nov. 7, 1950 MACHINE FOR AUTOMATICALLY SETTING AND TRUING THE ENDS OF THE TEETH OF SAWS Andr Vigneau, Norrois, France Application January 8, 1946, Serial No. 639,762 In France December 2'7, 1944 20 Claims.

1 1 It is known that for giving clearance to band saws (or other like saws) it is customaryto set, that is to say to spread, in thetransverse direction, the end of the saw teeth, and then to true them, that is to say, to calibrate this spreading of the teeth in such a manner that all the teeth give, owing to their substantially identical shape, a uniform clearance for the blade to pass.

The set is generally effected by means of an eccentric (a cam-like pivoting tool of special shape) which engages the underside (front part of the end) of the tooth of which the back bears on a small'anvil. r

' Hitherto, the setting apparatus was moved, either by hand, tooth by tooth, along the stationary blade, or was given a reciprocating motion of retraction (in automatic machines) in order to enable the movable saw blade to be fed forwards.

Whatever may be the type of apparatus machine for setting and' truing (calibrating).

at each'cycle of operation and, on the other hand a truingdevice which can move in the longitudinal and vertical directions so as to place itself in the correct position relatively to the tooth to be trued, so that small differences in the set of the saw teeth or inaccuracies of adjustment are compensated.

Means are provided for automatically bringing the blade (preferably with an arcuate motion) into the correct position, so that the tooth to be set comes into the exact position (vertically and longitudinally) between the setting cam and the anvil. Means are furthermore provided for automatically obtaining from a single control the forward feeding of the saw blade, its (arcuate) upward and downward movements, the setting and the truing of the teeth.

The various characteristics of the novel machine will become apparent from the ensui'ng description which relates V to a constructional example shown diagrammatically and nonlimitatively-in the accompanying drawing in whichr l;

Fig. 1 isa-plan view of the. machine; Fig. 2 is a vertical section thereof along the line 11-11 (axis of the .saw blade) of Fig. 1;

Fig. 3 is a vertical section, substantially along the line III-III of Fig. 1, of the setting device; Fig. 4 is a vertical section, substantially alon the line IV--IV of Fig. 1 of the truing (calibrating) device;

Fig. 5 is a partial vertical section of the ma.- chine along the line V--V of Fig. 1;

Fig. 6 is a similar view to Fig. 5, the members shown being however in another position;

, Figs. 7, 3 and 9 are respectively sections taken along the lines VIIVII, VIII-VIII and IXIX of Fig. 1, the object of these sections being simply to show the respective positions'of the various actuatin members of the machine; Figs. 10 and 11 show two differentpositions o the locking fingers of a group of actuating members of the machine;

Finally, Fig. 12 is a perspective view of a portion of a saw blade, one part of the teeth of which are of normal shape, whereas another part of the teeth hasbeen subjected to the setting and truing or calibrating operations.

.As canbe seen in this latter figure, the result to be obtained is the setting and, consequently, the transverse and suitably truedspreading of the end of the teeth of a saw, the blade of which is designated by A, the normal teeth by B and the teeth which have been set and trued by C.

The machine which can do the work referred to above and which is shown in Figs. 1 to '11, comprises a blade-holder I, which is adapted to move on guides 2 which are secured to the frame 3 of the machine and which support the. saw

"blade A whose movements are braked by two vertically adjustable leaf springs 4, the pressure of which can be adjusted by means of screws controlled by knurled knobs 5.

The blade-holder I, which is adjustable in the vertical direction (in order to enable it to be adapted to different widths of blades), is mounted on an adjusting screw 6 controlled by a knob I and engaged in'two stub-shafts 8 and 9 which are journalled respectively in cranks l0 and H, so that an articulated parallelogram ab-c-d is obtained.

In the inoperative position of the blade-holder l (low position shown -in Fig. 2), the lower end 3 of the screw 6 rests on an adjustable stop 12 fitted on the frame 1. I

The shaft 9 of the upper crank II, which is the actuating crank fixed on an actuating shaft I 3, enables the smooth upper portion of the screw I clockwise direction) causes the blade-holder I to move in such a manner that, for the setting and truing operations, the blade takes up the position designated by A in the drawing Before the upward movement of theJbladeA 4 minates in a hexagon on which is fitted an actuating lever which will be referred to hereinafter. The swinging of the cam 34 in a clockwise direction produces the setting of a tooth at each cycle of the machine, The truing (or calibration) of the teeth which have been set, in the dejl'ie-fi'istd's oribed, is produced by the pressing of the tooth Between two conical shaped dies. For the truing to be accurate, it is necessary that the end of the tooth should always be located in the same position in the die In the machine which is the object of the invention, as the truing apparatus does not calibrate the tooth which is being set but one of the subsequent teeth, account has to be taken of the I takes place, said blade is moved one tooth in the I direction of the arrow F, by means of a finger l5" carried bya pusher I6 adjustably pivoted at i! on arrives I 8"-'fi'-Xed oi-r a ensg shaft Hl journalled in' the fra'ine" of the machine, and'actu'ated in the manne which" 'wil-lbe' described ne' einafter.-- Saidfpusher'feeds' the tooth which is to be set (and not the pre'cedi-ng tooth-)y this being so that-:the differences of spacing of: the teeth do 'notafiect the engagement of the tooth in the setting de ice. a

7 The useful travel tforward feeding ofth'e defined by meansof an'adjustable stop sorwjfl.

The settingdevice (Figs f'l, 2 and 3) co mprises a settihg fievioe body li havi'r'igtherein a slit 22' :fqr heh 'iblei eiress; ei p ss i? 'adjustthe angular position of said body in a support 23 "secured-to-the frfam e o f the machine and to 12:61: said bod ih said Support byf nean's ad ustable Jam/ n 2 5 intended to support the back of the --tooth during; the setting ;-ope rati'on'. The tooth subjectedto the setting operation is held iatfmna r ri hetvansverse direction (theblade liavihg previously-"been brought into-the position A15)? p'y'means oi a -fix'ed but auiustabie aia plate ZS and Of a tie 21 {adjustably- 'engagd in a stub-shaft- 28 journalledin thefbod'y 21' and carrying aspecial: helical slop'e iil. min-e body 2 L is: alsomounted an adjustable clutchmember 30 which" is locked therein'bymeans of a screw 31. said ciu'tch memb r carries a s' ecmrs ope which corresponds; to th'e -slope 2 9 or the stubshaft 28; and which impart's' a veryfrapid movem nt te the stub-shaftdn question during a fractionofits revolutiom 'then a slow but powerful *move'inentduringlthe complement of its rotation. A retracting. spring? 32 ensures the'contact between the slopes of: the two members :28v andr3ll. The rotation of the stub-shaft 2&.=isi effectedrgby of the play or is closed. by; an assembly plate .45; arid 1 possible differences of spacing and of height which may occur in the teeth of saws, and also of the bending of the blade-supporfile v eo 'di n plt e 'lvn ibe mam? provided so thatthe tooth to b' trued is airways 'aiiratei] deed in th w ns.- i i- The r nef l vil penetrates the e 2'6'.of,,aj screw 41 w adjustable ma. stubrshaft lfi on .,Qhich liked the. controllever 49, whic'h is a'ctuated by aborine'cting rod provided witha ja'dju'stingg rooiie inwhichcan be. locked thej crank 51L carriedby the lever Q;9, sa id connecting; rod being, controlled by means whichwill be described, hereinafter. Th s uh h i sg f 1 52 with a StopL Said, slope Ico operat corresponding: slope ofia'n adjustable clu ch mern here-ii, clamped in the body .35, by ,means' of 'a screw; 54,. A retracting spring '55 ensure p 'manentjcontact between the afo said slopes; j the arm 49' of the lever. is, attached one end of a retracting spring 56' of which theother egridi's attached, through the'iiit'er'ine. mi of a finger meansziof:a;leverg33g theicontrol of 'whichisobtained'byi a mechanism which will-be referred to hereinafter. .J 1 s I 1 1 Whenithe,l'ever 33Iswings (Fig- 2) in a clockwisejdi-rection, the action of the-slope 29 effects the transverse; clamping ofthetooth tobe: set

between the fixeddie-plate 26-. and the die: 2] which is pushed toward's .thelatterowing to the axial movement of the shaft 28;

The setting proper o .lt he toot l i is' obtainedby hereinafter.- I I 51,- to thebo'dytf ofthe truingdevice. I

he, body. carries, furthermore; wearin plate 58, the function of which will beapp'a'rjent synchronisrn with the settinghdevilce previ I I described, and in the followih lfiianiier, itsQ b irig remembered thatthesawteethlocate bforethe truing device (on .the'..1eft o'flthe ,tru1ng. -devi'ce in Figs, .1 and 2) have already undergo the setting operation by the settingdeyicefwhieh'pr cedes the truing device (in the direction of feed of the blade). and which has beendescribedhereinbefore. It should also berernemb'er'ed'tha't'the body 35 of the -truing or calibratingdevice can .effect'two .m'oveinents, viz. a. s ingingmmimjfit about the'shaft as anua-i longitudinal'movement on the horizontal guide 38. I I

By means of the adjusting groove provided in the connecting rod 58, the truing apparatus is 'so' placed-tha't, when the'blad'e A isin the raised position A, the lower assembly finger 43 isre- 'trac'ted'fr'om the underside of the tooth a distance -of 1 cm. for example. -When the blade takes up the position A, the -end of the tooth D lifts, through the intrumentality of the plate 58, the body of the truing device which swings about the shaft 36. The truing-device is thus placed. in its correct position vertically.

When the connecting rod 58 exerts a thrust (towards the right in Figs. 1 and 2) on the lever 49=said lever, which is first of all held stationary by thespring 56, cannot swing with the stub-shaft 48 in the body 35 and the whole truing device moves towards the right (Figs. 1 and 2) on the slide 31 until the finger 43 abuts against the underside of the tooth to be trued. At this instant,

the whole truing device can no longer move to-- wards theright and, as the connecting rod 58 continues to urge the lever 49, said lever overcomes -the pull exerted by the spring 58 and swings with the stub-shaft 48. By-the action of the slopes, the shaft 48 and, consequently, the screw 41 move towards the right (Fig. 4) and the aforesaid screw pushes the movable truing die 48 towards the dieplate 4|. This pressing movement produces the truing of the-tooth.

When the connecting rod 58 returns to its starting position, it effects the release or separation of the die 48 and. the die-plate 4| until the slope 52 abuts against its stop. At this instant, as the return strike of the connecting rod 50 is not completed, the endof the return stroke .of 'the connectingrod in question returns thetruing 4 apparatus to its starting position (toward the left in Figs. 1 and 2). v a

I The operations of. automatic feeding of I the saw blade (at the beginning of each cycle of the -machine), of raising the blade-support, of setting, of truing of' the saw teeth and of lowering the blade:(at the .end of each. cycle) are effected by a'single control mechanism.

1 Thiszmechanism comprises a worm, 58 (Fig. 5) fixed on;a shaft 6| journalledin two bearings 82 and 63 fixed to the frame 3, one end of said shaft .carrying a loose pulley 64 and a fixed pulley 65 .on which is mounted a crank handle 68.

The worm 68 meshes with a spiral gear 61 fixed von a shaft 68 journalled inbearings 69 and 18 of the frame 3, The shaft 68 carries (Figs, 1 and Na, lifting cam 1I associated with a lever 12 carrying a roller 12'. .The'cam 1I co-operates with aroller 13 carried by a lever 14 fixed on the shaft I3 controlling the parallelogram (ab.-c-d) for lifting the blade-support .I. The roller supportingulever 12 co-operates with a lever 15 fixed on the shaft I9 ofthe lever. I8 controlling the feed of the saw blade Anfarm 16, also fixed on the shaft I9, is subjected to the action of a. retracting spring "attached to the frame 30f the machine. It will be seen that at eachcomplete rotation of the shaft 88 (which rotation corresponds *toa 'cycle of operation of the machine),.the blade-holder I is periodically raised and lowered (through the instrumentality of the members 1|, '13, 14,- I3, II, I8,-6). This movement of the blade holder is synchronised with that of the P pusher finger I5 (which is actuated through'the members 12, 12, 15, 16, 11, I9, I8, I8).

One'of the faces of the spiral gear 61 is provided with a "drum 1,8. the periphery of, which carries an unlocking projection 19 and theirs projection 19 of the drum 18 and, on the other hand; with an adjustable stop screw 81, the free end ,of which co-operates with the smoothzpe- :"riphery of the aforesaid drum 18. At the opposite end, the sleeve B2is secured to a resilient actuating lever 88 (Figs. 1 and 8) which actu- ';ates, through the intermediary vof a compression spring 89, an intermediate lever QDadapted to rotate loosely on the sleeve 82; The intermediatelever 98 is connected to one end of a connectingrodt 9|, the other end of which is 'con- .nected to the actuating 'lever 33 of the setting device.

Before the operations of setting andof' 'truing take place,.the' blade'is' clamped in the setting device owing to the swinging (in-an'anti-"clock- 'wise direction) of the lever8l (by the action of ;the:roller 88) with the sleeve82, the'ilever-88 and the intermediate lever98 and to the translator 5movement ofthe coupling rod 9I.-' After the setting and truing operations, all the members are brought into the unlocking position (Fig. 6) owing to the projection 19 encountering the heel 86, thereby moving back the unlocking lever 85 and swinging the clevis84 in a clockwise direction. The escapement between the heel 86 (carried by the lever 85) and the projection 19 is adjusted-by means of the screw/-81 (Fig.6). The holdingof the membersin' the unlocked position is effected by a finger 92 "which is secured to the lever 88 and-which co-operates with a leaf-spring 93 fixed to the frame of the -machine (Figs. 1, 10 and 11);

The actuation of the setting device and of the truing device is effected by a roller 94 mounted on the spiral gear 61, on the opposite sideof the drum 18. Said roller co-operates with anactuating lever 95 fixed by means of a screw 98 on the shaft '83, one end of which carries a finger 91 co-operating with a stop 98 and with a retaining leaf-spring 99 fixed to the frame 3. The

' lever 95 carries, furthermore, an arm I88 fitted "actuating the truing device.

" with a stop screw IOI co-operating (during the return movement) with an ear I82 secured to the clevis 84. a

O'nethe shaft 83 is fixed a lever I83 (Fig. 1) connected to :one end of the connecting rod 50 Finally, at its free end, the shaft 83 carries a clevis-shaped lever I84 in which can slide a clutch 'pin'185' normally engaging a quadrant I06 of a lever I01 thereby securing said lever I81 to the "shaft 83. The lever I81 is pivoted to a slider I08 (Fig. 9) which can be adjusted in the groove 65' I89 of a coupling rod: II8 which it -controls resiliently. Said coupling rod is connected at III to a' lever I I2 engaged on the hexagon of the setting cam 34. Thelever ;I I2 is locked on-the cam 34; When the cam portion of the latter is deformed by the work, said cam can move transversely and'is held in the chosen position by pro vided in the body of thelever .I I2

Itwill be appreciated fromthe drawing that the various transmission and control members are arranged, organized and fiXed in such a manner that one complete revolutionsof the spiral gear 61: (which revolutioncorresponds. to, a cycle of operation of the. machine) effects the following sequence of operations: c

(1. (a) The pusher l feeds the blade of the saw an. amount equal to one saw tooth;

' I('b) The pusher returns to its starting. point;

2; The blade-support 1 moves upwards and brings the saw from the p'ositionA to thef-position A. during which operation: o (a) The tooth to be set'is placed between the cam 3.4 and the anvil i Y (b) The end of the teeth which has already been-set and which-is located under the trui-ng -de vice-alifts same and places it in the correctv position vertically; V, i o

3. The clamping mechanism,- provided in the setting device 2| clampsfln the transverse direction, :thebl'ade which has'been brought into high position; i

4., ,Ihecam 34 is actuatedand sets the tooth which issupported'against'the anvil: v Simultaneously, the truingdev'ices35 (raised to the correct height) moves the guide 38 until the stop 43 of the dies abuts against thetoo'th to: be true'd, at which instant the helical slope 520i the truing device comes 'into aetion-,'thereby causing the tooth to'be calibrated between the die and the die-plate 41;

5-. )ALHQBI' .the setting and the truing operatioiis, 7

there simultaneously take place the uhlockin'gin the setting device '21 and (through "the interl clamping of the truing dies 49 4i and return of the cam 34 to 'the'initial position;

The truing device then returns to its starting position;

H 6. The blade-support l -moves. down into its initial position, thereby causing:

. (a) The saw bladeto'move downwards'irom the position A to the position A;

tb) The truing device 35 to move downwards "and bear against its stop 39.

'I claim: V

1. A machine for' automatically setting and 1 truingitheteeth of band saws or the like comprising a frame, setting-means mounted 'on said frame; means for supporting a sawbladepmeans for feeding said saw blade step by step during each'operational cycle of the machine so that the saw teeth are successively acted upon'by said setting means, truing means acting u on said 'teeth 'aft'er they have been set' by said setting means; and means controlled by the tooth'to be acted uponby said truing'means for-adjusting said truing'means; in the horizontaland vertical 13124-1165 so that said-truing means maybe automatically correctly positioned with. respect to; the

vtooth to be trued.

2. A machine for automatically settin and V .trui-ng the'te'eth ofband saws or the like: comprisin-g'a frame, setting meansmounted on said" "blade-curing the setting operation.

correctly positioned with respect to the tooth to be trued, said setting means comprising a body angdlarly adjustable relative to said frame hav- 'ing a slot therein for the saw blade, an anvil for supporting the saw tooth duringthe setting thereof; a'cam for setting the tooth and means automatically. operated for locking the saw blade during the setting of the tooth.

3.-A machiiie for automatically setting and truing'the teeth of band saws or the like com prising aframe, setting means mounted on said frame, means forasupportinga saw blade, means for feeding said'saw blade step by step during each-operational cycle of the machine so that 'the saw' teeth are successively acted upon by said -s'etti'ng means, truing means acting uponxsaid teeth'af'ter they have been set bysaid setting means, an'abutment located adjacent said setting means; a movable member cooperating with'said abutment for locking the satv blade during the setting o eration, "said movable Vmember; having ahelieal incline thereon, a cooperating helical inc'line-fixed relative to said-first named helical inbli'n'e; and means for rotating said movable elein'ent at predetermined periods so that said movable-member, due to the'cooperating inclines, will cooperate with said abutment to lock said saw 4. A machine for automatically setting and truingthe'teeth of band saws'or the like comprising 'a frame, settiiig means mounted on said frame, means for supporting a-saWblade/means *foi jfeeding said, saw blade step by stepduring each operational cycle of themachine's'o th'at the 'sav'v teeth are successively acted uponby said "setting means, truing means acting upon .said

teeth after they have been set said setting means, said truing means being located in aibod-y slidably ancl'pivotal-ly mounted and'compri'sing a fixed "die, a movabledie cooperating withs'aid fixed die for truin'g' the tooth operated upon, and

j cam means operable during each operational cycle of the machi e rer movin'g aid movable die towards said fixed die.

5. A machine for automatically setting and truing the teeth of band sawsbr vthelike-"comprising a framesetting means mounted onsaid frame, means for supporting a saw blade, means i for feedingsaidsa'w tb ladestep by step during each operational cycle of theinachine so that the saw teeth are suc essiyay acted upon by said settingmeans, truing means acting upon said teth after they have been set by said'setting mean-s; meansior movingsaid supporting means into ahd'away from thefpo'sitioninf which the setting and truing operationsare performed, said last pained. means comprising an articulated parallelogram movable at each operational cycle ofthefmachine.

'6; A rnachine for automatically setting'an'd truing the teeth of band saws or the like comp'rising'a frame, setting'njieans'm'ourited ohsaid frame, means for supporting-a: s w bladefmeafis 'for feeding said blade tep by step during each operational cycleof the machine sothat the saw teeth are successively acted upcnby said Setting means, tru'ir l'g I n'eahs acting upon said teeth after they'hav'e been set by'sa'id setting means; means for moving said suppor ting. means into and away from the position in which the setting and mining operations are erformed; said last named means comprising an articulated parallelogram, an oscillating-shaft oscillated at each operatidnalbycle'bf the machine and .9 connecting said oscillatingshaft with said articulated parallelogram so that said supporting means for said blade is moved intoand away from said setting and truing means.

'7. A machine for automatically setting and truing the teeth of band saws or the like comprising a frame, setting means mounted on said frame, means for supporting a saw blade, means for feeding said saw blade step by step during each operational cycle of the machine so that the saw teeth are successively acted upon by said setting means, truing means acting upon said teeth after they have been set by said setting means, means for locking said saw blade during the setting operation, a driving shaft, a worm fixed on said driving shaft, a spiral gear driven by said worm, a drum mounted on one of the faces of said spiral gear, cam means upon said drum controlling the unlocking of said locking means, a roller also mounted on said drum controlling the locking of, said locking means, and a second roller mounted upon the other face of said spiral gear controlling said setting means.

8. A machine for automatically setting and truing the teeth of band saws or the like comprising a frame, setting means mounted on said frame, means for supporting a saw blade, means for feeding said saw blade step by step during each-operational cycle of the machine so that the saw teeth are successively acted upon by said setting means, truing means acting upon said teeth after they have been set by said setting means, means for locking said saw blade during the setting operation, a driving shaft, a worm fixed on said driving shaft, a spiral gear driven bysaid worm, a drum mounted on one of the faces of said spiral gear, cam means upon said drum controlling the unlocking of said locking means, a roller also mounted on said drum controlling the locking of said locking means, and a rocking lever operable by said roller controlling the operation of said truing means.

9. A-machine for automatically setting and truing the teeth of band saws or the like comprising a frame, setting means mounted on said frame, means for supporting a saw blade, means for feeding said saw blade step by step during each operational cycle of the machine so that the saw teeth are successively acted" upon by said setting means, truing means acting'upon 'said teeth after they have been set by said setting means, means for moving said supporting means for said saw blade into and away from said setting means and truing means, a driving shaft, a worm fixed on said driving shaft, a gear driven by said worm, a cam driven by said gear, and means operated by said cam for operating said means for moving said supporting means for said saw blade.

10. A machine for automatically setting and truing the teeth of band saws or the like comprising a frame, setting means mounted on said frame, truing means also mounted upon said frame, means for moving a saw blade into and away from said setting means and said truing means, means for feeding said saw blade step by step during each operational cycle of the machine so that the saw teeth are successively acted upon by said sett ng means and said truing means, and. means for locking said saw blade during the setting and truing operations.

11. A machine for automatically setting and truing the teeth of band saws or the like comprising a frame, setting means mounted on said frame, truing means also mounted upon said frame, means. for moving a saw bladeintoand away from said setting means-and'said truing means, means for feedingsaid saw,blade st ep by step during; each operational cycle of the machine so that, the saw teeth are successively acted upon by, said ,setting -,means and said-tim n means, means for locking said sawblade during the setting and truing operations, and cam means controlling said locking means to actuate the intial movementof said locking means rapidly and the final locking movement at reduced speed.

12. A machinefor automaticallysetting and truing the teeth of band saws or the likecomprising a frame, setting means mounted on said frame and fixedly positioned with respectto said frame during operation of the machine, means for supp rting a saw blade, means-forfeedin sad saw blade step by step during each opera: tional cycle of the machine sothat the saw-teeth are successively acted upon by said settingnleans, truing means acting upon said teeth afterthey have been set by said setting. means, and means controlled by the tooth to be acted upon by said truing means for adjusting said truing meansin the horizontal and vertical planes so ,that said truing .means may be automatically :correctly positioned with respect to the tooth; to be trued.

13. A, machine for automatically, setting and are successively acted upon by said settingmeans,

truing means acting upon said teeth after they have been set by said setting means, means controlled by the tooth to be acted upon by said truing'means for adjusting said truing means in the horizontal and vertical planes so that. said truing means may be automatically correctly positioriedwith respect to the tooth to be trued, said setting means comprising a body angularl-y adjustable relative to said framehaving a slot therein for the saw blade, an anvil'for supporting the saw tooth during the setting thereof,- a cam for setting the tooth and means automatically operated for locking the saw "blade during thesettingo'f the-tooth. Y

14. A machine for automatically setting and truing the teeth of band saws or'th'e' likecorn prising aframe, settingmeans' mou'nted-onsai'd frame and fixedly positioned with respect-. to said frame during operation of the machine, means for supporting a saw blade, means for feeding said saw blade step by step during each operational cycle of the machine so that the saw teeth are successively acted upon by'said setting means,

truing means acting upon said teeth afterthey have been set by said setting means, anabutmerit located adjacent said setting means, a movable member cooperating with said abutment'for locking the saw blade during the setting operation, said movable member having a helical incline thereon, a cooperating helical incline fixed relative to said first named helical incline, and means for rotating said movable element at predetermined periods so that said movable member, due to the'cooperating inclines, will cooperate with said abutment to lock said saw blade during the setting operation.

15. A machine for automatically setting and truing the teeth of band saws or the like comprisi g a frame, setting means mounted on said frame-and fixedly-positioned with respect to said frame during operation ofthe machine, means 7 1 6. A machine for automatically setting the teethof b'a-nd saws or'the like comprising a frame, setting m'eans mounted onsaid frame and fixedly positioned withrespect to said frame during operation of the machine, means for supporting a saw blade, meansfor feeding said saw blade step by stepduring each operational cycle of the machine so that the saw teeth are successively acted upon by said setting means, meansfor' moving said supporting means into and away from the position in whichthe' setting operation is performed, said last named means comprising an articulated parallelogram movable at each operational cycle of-tlie machine. I

17. A machine for automatically setting the teeth of hand saws or the like comprisinga frame, setting means mounted on said frame and fixedly positioned with respect tosaid frame duringoperation of the machine, means for supporting a saw blade, means for feeding said saw blade step by step during each operational cycle of the machine so that the saw teethare successively acted upon. by said setting means, means. for" moving saidsupporting; means intoand away from the position; in which the setting operation is performed, said last named means comprising an articulated parallelogram, an oscillating shaft oscillated at each operational cycle of the machine and means connecting said oscillating, shaft with said articulated parallelogramso that said supporting. means for said blade is moved into and away from said setting means.

18; A machine for automatically setting the teeth of band: sawsor the-like comprising a. frame, setting means mounted on said frame, means for supporting a saw blade, means for feeding said saw blade step by step during each operational cycle of the machine so that the saw teeth are successively acted upon by said setting means, means for locking said saw blade during the setting operation, a driving shaft, a worm fixed on said driving shaft aspiral gear driven bysaid worm, a drum mounted on one of the faces of 'said spiral gear, cam means 'upon said drum-controlling the unlocking-ofsaid locking means, a roller also mounted on said drum controllingt'he lockingwof said locking means, and a second roller mounted upon the-other face of saidspiral gear controlling said'settin'g means.

193 A machine forautomatically setting. the teeth of bandisaws'on the like comprising a frame, setting means mounted on: said frame and fixedly positioned with respect to said frame duringi operation of the machine, means for supporting a saw blade, means for feeding said saw blade step by step during eacl'r operational cycle of the; machine so that the saw teeth are successively acted upon by-said setting means, means for moving said supporting means for said saw blade into and away fromasaid setting means, a driving shaft,,a worm fixed onsaid driving shaft, a gear driven by said worm, a cam driven by said gear, and means operated by said camlfor operating said means for moving: said supporting meansfor said saw blade.

20, A machine ,for automatically setting the teeth: of band saws or the like comprising a frame, setting means mounted on said frame and fixedly positioned with respect to'said frame during operation of the machine,,m'eans for moving a saw blade into and-awayfrom lsaid setting means, means for feeding said saw blade step by step during each operational cycle of the machine so that the saw teeth are successively acted upon. by said. setting, means, means for locking said saw blade during the setting. operation.v

ANDRE VIGNEAU.

; REFERENCES CITED,

- The following references are of record in the fileof this patent? UNITED I STATES PATENTS Knutson June 9;, 1942 Certificate of Correction Patent No. 2,528,925 November 7, 1950 ANDRE VIGNEAU It is hereby certified that error appears in the above numbered patent requiring correction as follows:

In the grant, line 15, strike out of SEVENTEEN years, same line, after grant insert until December 27,1964; in the heading to the printed specification, between lines 7 and 8, insert the following: Section 1, Public Law 690, August 8, 1946. Patent ewpz'mes December 27', 1.964:

and that the said Letters Patent should be read as corrected above, so that the same may conform to therecord of the case in the Patent Office.

Signed and sealed this 4th day of March, A. D. 1952.

[SEAL] i1 7 THOMAS F. MURPHY,

Assistant Commissioner of Patents.

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