US1611058A - Sawmill set works - Google Patents

Description

Dec. 14 1926.

. w. NEwsoM SAWMILL SET WORKS Filed March 20, 3 sheets-sheet 1 Dec. 14,1926. l

SAWMILL SET 'WORKS Filed Mrch 20, 1925 5 sheets-sheet g Dec, 14, 1926. 1,611,058

w. NEWSOM SAWMILL SET WORKS Filed March 20, 1925 5 Sheets-Sheet 5 32 O @waan/bom t3 ticularly in theV claims *i Patented Die; 14, 1926.1

fwILLARD NEWsoM, or MONTGOMERY, ALABAMA..

' sAwMiLL sur WORKS.

l Application filed March 20, 19257K.V Serial No. v17,022.r

The present invention relates to improvements in saw millA set works and it pertains more particularly to those of the type employing a. spring'for retractingthelog-setlogsfon the carriage. i Y Y The primary object of the Vinvention 4is to provide novel and improVedlmeans for ad- 5 yting knees preparatory to the placing Vofthe vancing the'knees to set .the log in positioni for eachcut, for releasing the knees, and

for controlling' the recession of the knees under the action ofthe retractmg spring, whereby these operations may be performed.v

quickly and with facility by thevSawyer or la a single 'attendantwhileoccupying his usual position at 'one side'of thel carriage. `Ac cording to the preferredembodiment of the invention, a single control' member,.fw hich constitutes the sawyers lever, serves to ad,- vancethe knees to set'the log fort-he successivecuts, to trip or release the knees, and thus permit the spring to retract them',.and

`to arrest or stop `the knees whenthey have i'eceded to tliezdesired point.

To these and other ends, the invention consists in certain improvementsand combinations andv arrangements of parts, all as vwill be hereinafter more fully described,the features of novelty being pointed out paratthe end of the specification. y

In the accompanying drawings Y. Y Figure l is a perspective view of a set- VVworks constructed in accordance with the preferred embodiment of the present invention g l e Figure 2 represents an end elevation the set-works as viewed from theV left Figure l;

Figure 3 represents a side elevation of the set-works as viewed from theL left Figure 2: and 4 Figure l isa ldetail view of a part of the struct-ure as shown in Fig. 3, illustratingY a `with the set-works. Y l

' Similar parts are designated by the same reference characters in the several views..

The present .invention is applicable, gen# 5i): crally, to the set-works of various types used in saw-mills, it 'being particularly Vap-,r

plicable to set-works of vthe, typeA wherein the log to be sawed is set for the successive cuts of the saw by successive actuationsof a sawyers lever which operatesthrough i'atchetinechanism to advance log-setting i aw, ls and hence, it eliminates the breakace y springthat may be employed in connection ria-ge which carries the set-works.

been completed, the'logs'etting knees are released and retracted by a'A spring, following` Vwhich/theV receding movement' of, the knees to` receive another 'log.'

arrested, Sothat theyjwillbein position In setworks of this type, ,as heretofore conknees, and, afteritlie-sawing` of the log has.

structed, ithas been Ynecessaryto disengage Y theratchet pawls to permit retrograde move-` ment `thereof under the action of the retract-ing spring, it havingb'een customary to place an operator on "the carriage who` disengaged' the ratchetvpawls, and it-has been customary to employ na lever to control 'a' brake whereby the receding movement of theknees was' arrestedrat the desired point.

manner are subject to the disadvantages .that they require two operations `or the use fof both hands andare employed whenthe oper# l ator rides on the carriage, the operation and control of the set works i is inconvenient, laborious, andv involves loss of much time, and the ratchet imechanism is, subject to Set-works'constructed and operating that rapid wear and early destruction. The pres-V 1 usual position atV one side 'of the saw-mill carriage, or which' may be operated with facility by an operator riding on the car-f .A

invention riage Moreover, the present avoids the necessity of disengaging ratchet of the pawls' and the teeth ont-he ratchetwh-eelsyall olf these objections "incident to such an'operation being avoided.

In'the present instance, l represents the rear longitudinal rail Aof the saw-mill ca`r- This carriageiiiay be of any suitable construction. Q-designates the head'block bases, suoli as those usually mounted on the upper side of the saw-mill carriage and serve to support the loglat their forward ends. The logset tingy knees 3,. may be of the usual construc tion,they being.,r mounted yto slide onthe headblockbas'es 2in a direction toward and yent invention avoids all of these object-ions.

Trl

.forward movements of theknees 3 serve to feed' the log Yresting on the members 2 toward the forward ends of these members so as to set the log tor the successive cuts and .that backward or receding movement ofthev knees, which is eil'ectfed after one loghas..

Vbeen completely sawed enables another log tov be placed position' iny front oit them". A set shaft l having p inions thereon which Y mesh with racks on the under sides of Vthe knees. 3, asA commonly nsedon saw-mills, serves tov advance andrretract the knees in nnisom'fand a retracting spring 5 is ems ploy'ed', one end ot thi-ssp'ring being tiXedfto the setI shaft, and` the other en retract-ing 'spring comn'ionly7 used 'on sawj mil-ls, itlbeing wound to storepower when the set-works 1s actuated to advance the knees, and the power stored in the spring serves to retract the knees when fthe set- V werks'v is released.

1n'A the present embodiment ot theinvention, the set shaft isyactnated in a direction to. advance the knees by a "ratchet 'wheel 6 'i which isjrotatable freely or loosely on the set shaft', but may be connectedv thereto by Y afcl'utch which consists preferably off a' jaw clutchmember 7 which is` lined to one side o the ratchet wheel.I and afcooperative jaw clnteh' member 8` which is fixed to or form-s apart of'acollar 9, which latter spl-ined on theset. shaft, so that it be shifted to bring'the 'clutch members 7 and 8 into ven.-l ement, at which time the ratchet, Wheel libe` connected or `fixe/d to` the set shaft, and thev collar 9 may be` retract- 'ed disengage the clntch members, at which time the set shaft is treeto rotate, although the ratchet wheel 6 does not rotate except on forward` motion of the knees The ratchet wheel 6. isacituated to rotate theset shaft in a direction to. advance they knees 3 and thereby setr the logpreparatory to each sawing operation by ar lever 10 whichA is mounted'to swing` about Athe set shaft as i ratchet wheel.

rlhe set works may bey of leither the, single acting ori donhle. acting types, that shown being of the single acti-ng type. theV lever 1) carrying pawls 11 which, are so position-ed that they will 4operatively `engage the teeth of the ratchety wheel and thereby canse the latter to rotate in unison with the lever 10 when the latter swingstorwardly, and these pawls will ride idly over the'ratchetwheel teeth when the.lever 10V is swung, rearwardly o` in a reverse direction, A locking pawjl 12 is arranged to cooperate with the teeth ot the ratchet wheel to lock the latter against they remain Ain engagementwith ,d "xed to,

the carriage, this spring being similar to the e clutch which connects: and disconnects theV side ot l center and carries pawls which cooperateV with the retrograde rotation, thisv pawl riding idly over the ratchet teeth while the ratchet wheel yis being rotated by the forward swing o the lever 10.l The levermay be formed toward its lower endiwith a yoke 13 to straddle a sector 14 ywhich is iXed toy the carriage, and the Ylower ends of the yoke maybe mounted to swing on the set shaft asl a center. l v with graduatedl holes andv a, stop-pin, or with any other ofthe usual or snitable means for gauging or limiting ythe anglethrough which the lever VlOswings whereby the width ot'Y each cnt made by the saw may begauged. The ratchet pawls 11 and.12 provide for a torward rotation of the ratch'etwh-el, and

wheel, so that retrograde rotation of the latter does not take place. Y

The clutchy collar' 9 which.v controls Vthe ratchet wheel and set shaftis, the present instance, actuated by ya lever 15, which may be guided to operate betweenV a pair oty plates A16 vwhich project rigidly romfone the yoke 13I ot thelever 10, and a pivot 17 serves as an4 axisY about which the clutch shifting lever 15 may swing, this lever swingingin a plane transverse to the plane in which the actuating lever l() swings. A

llhe sector 14 may be pov'ldldV the ratchetV yoke 15 onthe lower endfotthe lever v15 en# K gag-es a circumferential groovel in the clutch shitting collar 9 and swingingl movements ot the lever 1.5 about its aXis17'iserve to engage and disengage4 the clutch members 7 and 8. A n extension 18v which is liXed on or forms a part of the lever 15 and which extends npwardly besideV the actuating `lever 10 is pivotally connected to one end of a toggle member 19, the other end of this toggle member beingpivotally connected to a cooperating toggle member 20. rl`he opposite end oi, vthe toggle member 2O is fixed to a str-.d shaft 21 which is rotatable in a bear ing,` 22A provided on lthe upper end ot' the lever 10. By this arrangem'ent7 rotation of 'fork on the lever 15 will shift the clutch collar 9 in a direction to engage the cliitch members 7 and 8, whereas rotation oft the shatQl in a reverse direction will tiex'the toggle members substantially into the ull linel position shown in Figure 3, the fork on the lever 15 then acting to shift the clutch collar 9 in a direction todisengage the clutch members 7 'and S. The shatt'Ql is preterably ntil'zed not only to actuate' the clutch collar throngh the toggle members 19 and 20, but also as ay means ot swinging the setworks-actuating leverA 10.V For this pur'- pose. it is, operatively7 connect-ed to a lever or rod 23 which extends toward the front ot llt) the carriage andis preferably provided `with a handle 24 tov facilitate its manipulation,

this lever or rod serving as the sawye'rs lever whichmay be manipulated by him while occupyingl his usual position at the front Aof the carriage. A universal joint 25is-pref-f` erably used to'connect the lever 23 to'the shaft 21, this universal' joint enabling the .i lever 23 to be reciprocated to actuate the c lever is arranged in thepat-hof a taperedVV Y or conicalfportion 33 form'edon the, clutchl Aleve-r l() and rotatedtol -actuate the toggle'-` membersrwith facility.

A brake is employed to arrest the rotation of the vsetshaft under theaction of the re# ceding spring 5, 'so that the knees maybeV positioned as the Sawyer desire s,fto vreceive the next loof. As shown Ia brake drum 26 is fixed'. on the set shaft and a. brake band 27 c cooperates with this drum, One end of 4the brake-band is attached, as by a` threadedor adjustable anchorinember 28, to an arm or lug 28a` projecting radiallyV from'a..v casting c 29 which isr keyed on the shaft 31 ofa brakesetting'plever 30, whilejthe opposite end'of the brake-band'is connected toa'` radiallyprojecting lug 29av on the'fcasting 29.j The shaftgl is pivoted to rotate inasutable stationary bracket 32,-k and thefbrake-setting shifting collar 9. By reference to Figure 3, itwill be noted that the"brake-setting lever 30 is outof contact with the conical 'portion 33 ofthe clutch shifting collar when thelatter is shifted sufficiently to` disengage the,

clutch members 7 and 8, the clutch shifting collar being thenin a neutral position, but a further shifting of the coilar 9 in adirection away from the ratchet wheel Gwill' bring the conical port-ion 33 of. the collar 9 into engagement with the brakesetting lever 30 and the latter is thereby caused to ride up -on theV conical portion 33 as the result of which the lever 3()y is swung upwardly or away from the set shaft,'andin consequence,

vthe brake band 27 is caused to f rictionally grip the brake drum 26.v However, when theclutch shifting member 9 is yinv either its movement of the lknees to be arrested by the setting of the brake on the set sha-ft and that the setting of this brakemay be accom'- plished through theclutch collar shifting lever 15 and the toggle members 19y and 2.0.

' through rotation of the lever or rod 23,

which is connected to the shaft ,21, vthe brake being set by rotating the lever 23 to an eX-v tent greater than that required to disengage Y the clutch members 7 and 8 by bringing the clutch shifting collar into the neutral posi..

tion, this further rotation of the'lever 23 acting tobring the togglemembers19 and l 20 into av doubled or folded relation, so that left in'Figure 3. Y

The inode of operation offthe set-works vthe toggle me'inberj20l extendstoward the constructedinaccordance with the vpresent embodiment of the invention is as follows: Assuming that the knees 3 have been receded to receive ja log at their forward ends'and Ythat the logs is ready to be advanced, thel lever or rod 23is rotated untilfthe toggle members 19. and 2O `have passedV through their straightened position which locks Ythein andkee'ps theclutch members 7 and 8 from separatng, tlie'ratchet wheel 6 being then coupled to the setshaft Yt; The conical end 33l o f VAtheclutch shifting collarl 9 will then be out of engagementk with the brake lever 30,'so'that the'jbrake is released., AWith the parts' in' this condition, a forward pull of the ieveror red 23, whiclrwi-ll causeY affor- 'ward swingof the lever 10', serves to advance the knees torset the log yfor the next cut', the

lratchet vpawls 11 which swing forwardly withlthe lever 10 engaging, theratchet wheel 6- andthereby serving,` torotate it and the set shaft which is coupled thereto. The locki ing pawl 12 duringthis operationl will ride idly over the 'teeth' ofthe ratchet wheel. The operation Vjust'fdescribed, is. repeated preparatory vto each Vcut until the log has been ,completelysawed' up; In order to recede the'kne'es which are then at vor near the forward edge of the carriage, and thus enable` anotheriflo'gto be' placed in Vfront .of them, the lever or'rod 23' is rotated to bring thetoggle members 19 and 2O substantially Vinto the full line position shown'in Figure 3.V

This operation ofthe lever 23 brings 'the clutch collar 9 into its neutral positionso jth'at the clutch'members '7 and 8- are disenj gaged, and 'while the ratchet' wheel 6 Vis held ragainst retrograde retation bythe lo'ck-V ing pa'wl'v12, the set shaft 4 is free to; revolve under the actionjofv the receding'spring 5 andV in adirection toreCede the knees.r

`Vhenl theY knees-'have reacliedthe desired ,pointin their recession, the lever or rod 23 is rotated to a further extent in the same direction, whereby the toggle link2() is swung iii-5 toward they leftffroin'the full line position shown inf'Figure 3, andthe conical portion 3,3,of thev clutch* collar is thus brought intoengagement with the brake-setting shaft 30, causing the latter to beV raised or shifted in a directionto set the brake band 27 on the brake Vdru'in 26, -furtlierrotation of the set shaft being therebyarrested. Reverse rotation ofthe lever or handlev 23 untilV the toggle members 19- and "2O are carried through their straightened position intov ltheir locked position, as indicatedfby the dotted lines in Figure 3, serves tov release the brake and to re-engage the clutch members 7 andV 8, and the set-works is then in condiio A iso

` as shoivn 1n hold: the clutch member 8' tion for operationl toeefect the successive settin'gs' of the log f o-ifthe sawing loperations tl'iereon.VV

` A spring the yoke 13. ,and arranged to bear at its; free end they adjacent side ofthe lever 18,V

Fig. Ll, thisV spring servingV to y i in engagement with the clutchjmember 7. When the setvijorks isroperated by anattendantrriding on the carriage, the'toggle members 19 and 20 andthe lever 23 maybe omitted, theclutch membersbeing then disengaged by manual movement of the lever 18 toward the left in this ligure, and the spring la'willserve to hold theA- clutch `members in engagement when the lever, 1S isV moved toward the right u providing a structurewhereby thel operations of actuating the set-Works-to settlie knees, releasing the knees yto permit their recession and arresting the recedingk movenient lofthe knees may be l'jeifformedorv lcOntrolledy manipulationof single lever or member, Vtheset-Works 'may bev operatedv entirely-by the savvyer Wliile. he occupies his usual position in front of thecarriage,

thereby avoiding the necessity of employing more than'V oneattendantffor the ope 'ation thereof.l Y Moreover, by enabling theseoperavtions to be performedvbymanipulation of a single lever or membeigsuch operationsmay bepperi-ormed'more easily'and with Vless loss Qi time.. Y. e

Asthe present invention renders it unnec-v the ratchet paWls fromv @Sa-ry t0., diseases@ Y the-ratchet Wheel A1n orderlto permit vthe knees. tdlrecede, the operation of releasing theI ratchet mechanismV is avoided.

l. cl mas my invention y A l. i Aa sani-mill set-Works comirisinglogf cessionA of the knees.

'setting knees, and a set 2,. Ina sani-mill set-Works comprising logsetting knees Vand a set shaft for advancing set shaft to advance vthe knees, ing the Vset shaft to'pern'iit'recession ofi'the kneesl and `for arresting. the recession of the knees- 3. In,l a saw mill set works comprising log- Y saaft Vfor"advancing them, the combination of cooperative with the set shaft toadvance the knees, means for disconnecting the actuating means to'pern'iit recessie n1 ofthe knees, means for arresting the receding operation of the set. shaft, and a member movable in one dili maybe fined, to the side ofA yhe setivorks is facilitated and rapid We, Of

means embodying a com'-r l lfor stoppingthe recessiony ot' actuating means respect to the set shaft, means for arrest- V V ing the receding operation of the set shaft, and amember reciprocable to operate said actuating means and Yrotatable -to actuate saidl connecting and, disconnecting means and to control said arresting means.y y Y 5. ln a saw-mill set-Works comprising logsetting knees and a setshaft for operating them, the ycombination of means including ratchet Wheel and cooperative pawls for actuating the set shaft to advance the knees, means for connectim'g` and disconnecting the ratchet Wheel with respect to theset shaft While the pawls remain engaged with the ratchet Wheel, and amember movable in one direction to operate saidr actuating means to advance the knees K directionl to operate said connecting and disconnecting means. i

6. ln a saWm1ll set-Works comprising lognr Vset shaft, and a memberreciprocable to opr- Yerate said: lever and rotatable to operate said clutch."

7. In, a: saw-mill set-Works comprising logf Vto control said are comprising logl andy movablel in another V setting means and aset` shaft for operating them,the 'combinatic-n'of` a ratchet wheel loosely mounted on the set shaft, actuating andJ "locking pavvlsr cooperative with the ratchet Wheel, a clutch for connecting and disconnecting the ratchet Wheel and set shaft, and means operative 'by Ya single, controlling member forl operating 'the actuating pawls to. advance the set shaft and the clutchY to connect and disconnect the ratchet wheel set shaft. Y Y Y n 8. In a saw mill set Works comprising logsettingV knees', a setv shaft for operating die knees, means'for actuating'theV set shaft to advance/the knees, a clutch for disconnecting said actuating means from the s et shaft to permit recession ofthe knees, Va spring for ,causing recession of the knees, and a brake the knees, meansl embodying controlling member for Operating means to advancevthe knees, and for operating said clutch to disconnect the actuating means from the set shaft and to set the brake to stop recession of the knees.

21 COllllllOll the set shaft actuatingY for receding the knees, the combination of` i no brake. l

'9. In a saw mill set works comprising logsetting knees, aset shaft for operating them,

a spring acting on the set shaftto recede theV 10. In a Vsaw-mill setWorks comprising log-setting knees and av set shaft for operating them, the combination 'of actuating means for operating theset shaft to advance the'knees, means including a movable clutch member for connectingV and disconnecting the actuating means with respect to the set shaft, a brake for the set shaft controlled by the movement of said clutch member, and v controlling levers for said actuating means and clutch. Vmember mounted to swing in unison. p Y

l1. yIn a lsaw-mill set-works. comprising log-setting knees and a set shaft for operat# ing them,y the combination of actuating `means for operating the set shaft to advance the knees, means including a movable member for connecting and disconnecting said actuating vmeans v With respect Vto the set shaft, means acting` on the set shaft to retract the knees, a brake for arresting the voperation of the 'set shaft and controlled by said movable member, 4and controlling levers for Vsaid Yactuating means and ymov-v able `member mounted to swing in 'unison about a common center. ik

12. In a saw-'mill setrivorks comprising 4log-setting knees, a setshaft foroperating them, anda springacting on therset shaft actuating means for operating the set shaft to advance the knees, va clutch for connecting and' ldisconnecting. thev actuating 'means ylvvith--respect-to the set shaft, 'av brake for stopping the receding 'operation of the setk shaft, and a common control .member for operating said actuating'nieans to advance the set shaft andfforoperating the'clutch and brake.

13. In a saw-mill set-Works comprising f log-setting kneesfand a set 'shaft for operating them, the combination of actuating means Vembodying a Wheel loosely mounted on the set shaft, a clutch for connecting and disconnectingV said p Wheel relatively to the" set shaft and including a movable clutch member, aspring acting on' the set shaft to retract the knees, a brake for arresting frotation of the set-shaft under the vaction of.

said spring, the brake having .a setting member whichv is actuated by said` clutch memberwvhenthe latter is moved into clutch disengaging position, and controlling levers for said actuating means and clutch member pivoted co-aXially and connected to swing in unison, one of said' levers being l also movable laterally relatively, tothe 'other lever. i y

` 14. lIn a saw-mill set-Works, the combination of log-setting knees, av set shaft for operating them, a ratchet ,Wheel and cooper ating pavvls for actuating Vthe set shaft to advance the knees,f.aclutch for connecting f and disconnecting theratchet Wheel With ie- .spect to the set shaft, a brake for controlling the receding operation of the set shaft, Vlevers .for operating the pawls, clutch and brake, said levers being mounted tosvving inimiron during actuation ofthe set shaft and one ofsaid levers being movable relatively to the other leverto operate the clutch and brake', and means including 'a common operating member for causing said levers to swing in Y unison or for causing one of said levers to f moverelatively tothe other lever.`

" 15." In a savvf-millset-Works, the combina-V tion of a set shaft forV actuatingthe'logsetting knees, a ratchety Wheel forrotating the j-set shaft, a clutch for'connecting andV disconnecting the ratchet Wheel with respectV jto .l the set shaft, aV brake for controlling therecession of the knees, a pair of levers, one leverhaving paWl means to cooperate With Vthe ratchet Wheel and the otherlever controlling'said clutch and brake, and togglemeans connecting said levers 'and operative to 'engage'V and disengage said `clutch Vand apply andrelease thebrake and to lock th Y -clutch in engaged'condition, 16. In `a saw mill set Works, the combination of a set shaft `for operating the log- A .setting 'kneesV a ratchet Wheel L and cooperj shaft to advance the knees, aclutch for connecting and disconnecting thek ratchet vWheel with respectto the set, shaft, a brake for con` trolling therecession of the knees When said clutch is in disconnected condition, coaxially pivoted levers connected to `svving in #unison fory actuating said paivl; mechanism and for disengaging the clutch fand applying the brake,V and" a spring 'for holdingthe clutch in engaged condition and fo the brakel in released'condition.

l In testimony-whereof I- havehereuntoset myhand. f

r holding Y -vviLLiinn nnvvsoM. f

10,5 Vating paWl mechanism for rotating theset n

Images