US958036A - Horn-controlling mechanism for fastener-inserting machines. - Google Patents

Description

w. o. STEWART. HOEK OOH'X'HQLLIHG HEOHANISM F011 FABTEEER IHSBBTIHG MACHINES. LPPLIATIOI FILED HOV. 512, 1907. lBlE'SD l0'. 22. 1909. 958,038. Patented May 17, 1910.

i y AUM W. C. STEWART. norm ooNTBoLLmG nommen Pon PASTENBBXHBBMIHG momma. APPLICATION IILED HDV. M, 1907. HEIBWED FOY. i9, 1909. 958,036, Patented Hay 17, 1910.

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W. C. STHWRT. ROBE OONTBLLING HEOHAHIBH FOB PABTBNEE IHSEBTIHG HAUHINEB. Arrnxon'xox num lov. n. nov. xnnwnn lov. n. nos.

958,036. Patented gay 17, w10;

I IIIETHYWB' 3.

w. lo. STEWART. HORN OORTROLLIHG HEOHANIBH FOB FARTI-INEE INSEETING MACHINES. PPLIOTIOI FILED HOV. R2, 1007. BEH'EWED HOY. S2, 1909.

958,036. Patembed May 17, 1910.

7 SHEETS-SHEET 4.

WALL/AM 6.* Sfloffef? 7;

W, STBWET. HORN OOTEOLLING HEUHAHIBH FOB FBTBUEB mul() HUHIHS. urmonrox mm1 nov. u. no?. nxnvnn nov. sa. um. 958,036. d my l?, l'.

W. o. STEWART.

HORN CONTHOLLIHG MEOHANIBH FOB FABTEREB. IESERTIHG KAGHIRBB. ArrLxoA'rIox mum lomas, 19o?. Rzxnwnv xov. an. 1909.

fiez /4 W. G. TBWABT. H0 mOLLIlG im POB PLBIBIBI IIBHBTIIG um. MPMQATIQI ILID U01. Il, 16". BIIIWBD BOV. Il, 1.0i. 953,036, mma my 17, nsw.

T IIIITHIIBT 1.

UNITED STATES PATENT oEEioE.

WIE-LILI HORN-CONTROLLING M ECHANISI C. STEWART, 0F LYNN. HABSACHUSETTS,

HEUTE, TO THOMAS G. PLANT, QF BOSTO, MASSACHUSETTS.

Speoiaoatton et Letten latent.

ABBIGNOB. BY IESN ASSIGN- FOB FASTENEB-INSERTING KACHINES.

Patented May 17, 1910.

Application lied November 82. 1907, Ferial No. 408,306. Renewed November 22, 1909. Serial No, 529.308.

To all whom it may concern:

Be it known that I, WiLLiAni (I. Srrswairr, a subject of the King of (treni Britain, residing at L iin, in the county of Essex and State of ll assachusetts, have 'invented an Improvement in Horn-Controlling Mechanism for Fastener-Inserting Machines, 'of which the following description, in 'connec tion with the accompanying drawin s, is a specification, like numerals on the rawins representing like parts.

his invention relates to machin s for inserting fasteners and more especia to machines adapted auioi othcrusch for inserting fasteners in the eel seats and .heels of boots and shoes. Machines of this type are provided usually with work supports in the orm of horns or jacks and ymy invention relates more particularly to the means for effecting the necessary relative changes of position of such work sup rt'andthe fastener inserting means an also .for ldetermining the number of fastener'm be driven.

My invention comprises various features and combinations of arts to be hereinafter more rticularly re erred to.

In e accompanying drawings, F' 1, is a vertical lon 'tudinal sectionl-.an partial elevation of t ie lower rtion of a machine illustrating one em iniciit of my in lve'ntion; Fig. 2 is an enlar'cd detail and partial section to be referre to; Fi 'on an enlarged scale shows a chine head, the driving [in ley and clut bein shown in section; lLisa ri ht han elevation of the parts shown in ig. 3, this beingl a view from what. would coinmonly be the back of the machine; Fig. 5 is a horizontal section on the dotted line. 5 5, Fig. 1, illustrat' one arrangement of controlling devices, own as treadles; Fig. 6 is a diagrammatic view of a portion of the work support controlling means, the view being in tpart a vertical section on the dotted line, 6- elevation of the counting or series determining device for predeterminatcly limiting the number of asteners to be driven; Fig. 8 is a similar view showing the parts adjusted for rmitting continuous drivin not control! by the said counting meegnnisin: Figs, 9 and 10, sectional details to.

bc referred to; l Fig. 11, a full size sectional detail showing the connections from the counting mechanism to the diirl device for -1a 1a, Fig. 11- Fi r.

. tion of its main shaft, th

artoft m Fig. 3; Fig. 7 is a detail in rearv var yinv. the number of fasteners of a given series; hg. Z2, a face view of the dial itself; Fig. 13,' a sectional detail on the dotted line,

ferred to; and i 5 is a front view sho.wing in oie particu arly one form of fastener insertinineclianism actuated from the drivin sha Iieferring to the drawings, first to Figs.

-1 to 4 inclusive,- in the particular machine,

selected for illustration 1 sustains at its iipper head 2, of an desired machine for insertiii fasteners an fitted with any suitable wor plate. F or th'e snrposes of the present disclosure, this hea inav bc assumed to be the head of a usual machine for drivin f loose nails in the manufacture of boots an shoes. Such a machine is typified by United States Letters Patent No. 490,624 issued January 2A 1893, to which reference may be had if a detailed description of such machine is 'de siied. For the present disclosure it is sufficient to state that the machine is constructed to insert one nail or fastener at each 'rotae period of operation of the machine determining the number of fasteners that are driven, it being necessary to stop the machine to arrest the inserticiietg the fasteners. l `l F d rrin now particu ary to igs. 3 an. 4, the nia 'he head 2 is provided with the usual main shaft 8 provided at its outer end with a suitable friction clutch 4, controlled by the vertically movable wedge 8 ou a slide rod 10. This wedge rod (Fig. 4) depends thc bracket or lug 1 rearwardly x'teu 'ng from the column of the machine. Below the lug 12 said rod is surrounded b v la spiral sprin 13, seated at its lower ond against a nut 4 upon the lower end of said crein, the column end the machine vrod and tending normally to depress the wedgeod and stop the machine. Just belowthewedgeSthewedgerod (seeIji .4) is provided with a lateral recess whic receives the end of a brake controllin arm 15, which controls a brake of aiiv esired construction, here typified by the brake wheel 19, andwthe brake slices 1Q and 20. lVhen the wedge 8 is depressed by its spring,r to release the clutch the arm 15 (Fi. 4) is moved to cause said brake to stop t e ma chine. Vhen thewcdgc is elevated to stan the machine, the reverse movement of said arm 15 will release the brake. To control 1 14, a detail to be rc- A treadle rod 27 and controlled by a sprin ylar 24, fast the wedge 8, its depending rod 10 abc-.e the lug l2 (Fi 4) is surrounded b a sleeve 22, provided at its upper end wit a fian 23. Immediately above this sleeve is a co upon Jsaid rod 10. Standing normally beneath the fiange 23 of aaiilsleeve is the upper end of a lift pawl 25, fulcrumed at its lower end at 26, tothe upper end of a 28. (Fig 4). This treadle rod is connecte at its ower end (see Fig. 1I to the rear end of a foot trendle 29, fu crumed at 30, a spring 33 on the treadle rod serving to depress the treiidle rod and elevate the treadle after the latter has been released by the root.

Referrin again to Fig. 4 the wedge rod 10 is provid at its u per end with a roller stud 36, shown also Figs. 3 .and 6, which overlies a cam 37, oi the main shaft. The sliii c of this cani is such that when once the we ge has beenelevated to start the machine, initial rotation of the main shaft will tiirn said cam beneath the roller 36, thereby further lifting it slightly so as to enforce sufficient frictional en gement between the clutch members and threafter to hold said roller and wedge in their,elevated positions until the shaft has substantially completed one rotation, whereu n the low spot of the cam reaches a position beneath the Asaid roller and then, and not until then, it is possible to depress the wedge to stop the ma! chine. The urpose of this is to enforce always a fu rotation of the main shaft when once, it has entered upon a rotation, in order that a fastener just feedin or forming miiv be completely fed or form and drive.- be ore the machine comes to rest, it being impossible to stop the machine when a fastener is artly fed or formed or partly driven. Khen, therefore, the operator depuis-Ses the treadle and lifts ti pawl 25 to start the machine,

astener only is to be driven, he may instantly release his treadle and permit the paw] to drop, leaving the wedge locked in its elevated position y its cam 37 to com. lete the rotation of the shaft and the driving of the fastener, after which said wed e is dropped by its own sprin 13 and t e machine is arrested by the bra e described.

The brake wheel 19 (see Fig. 6) is provided at its front face with a cam groove 38, in which travels a roller stud on a short arm 39, fast on one end of a short horizontal shaft 40, mounted in the machine head. At its opposite end said shaft 40 is rovided with a two ai'm lever 41, the de n ing arm of' which is provided with a stu that enters a slot 42. of n hell crank lever 43. fulcrumed iit tt on the iiiiicliiiie column. The depending ariii l5 of said bell crank lever stands in front of a pin 46 on the starting awl 25. At the i'rstrotation of the main s aft., the

e starting if a single bell crank lever 43 is turned to swing the starting pawl 25 from beneath the flan 23, as in Figs. 7 and 8, so that should the operator retain his treadle depressed the starting pawl will be automatically disenga from the flanged sleeve, to rmit the w sustained by it to dro at t e end of the first turn of the shaft anti) thereby render it -inissible to obtain more than a single driven astener however lon the treadle may be rc tained depressed. AT is is of advan in what is known as single nail work, when it is required to drive fasteners one at a time in different positions, the work bei fed bctween the driving of successive asteners. The work support is shown (Fig. 1) in the form of a horn This hirnf is removably mounted upont up en o asu rting rod 48, mounted to s ide vertically iliip: part of the column provided therefor. In the construction shown, said supporting rod is provided with a nut 49, supported u n a coil s ring 50, surrounding said rod and seatedat its lower end upon a head 51, at thc lower end of a barrel 52, that surrounds said spring and its contained rod. This barrel at its u per end is closed by a screw pl 53, whi serves also as a guide for the and seated against the under aide of this screw lug is astopl collar 53' fast. on said rod an serving to 'mit the upward spring pressed movement of the horn, relative to said barrel. Elevation of the barrel larval also through the spring 50 to elevate the rod 48 and the work suppo horn thereby to raise the work against t work o the machines.' When the work meats the work plate, further elevation of said barrel compresses the spring 50, which the wor firmly against said work p te to rcceive the fastener ldriven therethrough. When the barrel referred to is dropped, it first releases the spring 50, and the horn. The nut 49 is shown as a barrelnnt with pin holes in its periphery to receive a pin inserted through an apsrture in the barrel, whereby the nut ma turned to vary the normal tension of the vent the barrel from turning, the h 51 Fig. 1 is slotted at its t e fui e screw 54.

T e horn and sfliring carrying barrel dcscribcd are norma y in their lowermoct sitions so as to leave ample se ration tween the horn andthe work plte above it, for the renewal and insertion of the work. It becomes neceasa therefore, after the work has been pla -upon the horn, to elevate the latter to position the work against the work plate be re thefirat fastener can be driven. This is accomplished by positioning means which herein, lifts the a ri barrel 52 and thereby through the contai'nt spring, lifts the horn and work.

plata' spring 50. To ro` Referring still to Fig. 1, the barrel head 51 is provided with rollers 55, which rest upon the cam face 56, at the upper foiked i end of n lifting lever 57, fulciuined at 58, within and ii n the column. The cam fave i 56 of this li tin lever is shaped to provide a gradually inc ined lifting surface. termi nating at its upper end in a nearl .eonentric raised rtion 58"behind w iieh is a stop 59, to prevent the rollers from ruiming off the cam surface, said face terminating at its lower end in substantially concentric seats 60, to support the rollers 55 and the horn in their depressed itons.

The lifting lever 57 is swung friuli right to left (Fig. l) to lift the barrel and. thereby the horn by a connecting rod 61, ointed thereto and to the upright arm of t e bell crank lever 62, fulcrumed at 63. The horizontal arm of this bell crank lever is connected to the lower end of a lift rod 64, which (see Fig. 4) extends upward and is {ointed at its upper end to the free arm of a ever 65. -This lever (see Fig. 6) is fuleriinied at 66, upon the frame and is provided at its op ite end with a roller stud 67, which runs 1n contact with a surface cam 68 on the main shaft.

lVhen the machine is set in motion, initial rotation of the main shaft operates through said cam 68 to lift the rod 64 and thereby through the bell crank 62 and connecting rod 61 Fig. 1) pushes the lifting lever 57 fol-wur( to cause it to elevate the horn to press the work against the work plate in readiness to be operated upon for the driving of the first fastener.

To limit the forward swing of the 'lifting lever 57, I have connected to the upper end of the bell crank lever 62, a stop red 69, which is' provided at its rear end with a head 70, adaptedto contact with a ielding or other stop 71, on the column. T e sto ping position may be varied suitably by a Justalily connecting the stop rod itself with a threadwl clamp socket 72 on the bell crank lever (i2.

'lo retain the lifting lever 57 in its for ward )osition with the horn elevated I have provi( ed said lever with a toe 73, which stands norinallv iii front of a prop 74, fulernmed at 75 in the column. A spring 76 tends to draw said prop away from said fool. hat it nia v be pressed forward thereunder. to hold the lever in horn elevati position, by a pusher 77, connected with the upright arni of the bell crank lever 62 and pushed forward by'said lever as the latter moves to push forward the lifting lever.

'lfhe prop pusher 77 as herein constructed, is shown separately in Fig. 2. Referring to this figure it is shown as comprising two telescopic members 7 8 and 79, the member 78 earrying at its front end the roller 30, to nel upon the prop 74, the member 79 being i eonneeted to the bell crank lever 62. The inner telescopic member 78 is itself socketed to receive u spring 8l, seated at its opposite end against a block 82, in and near the oipen end of said socket. and forked to stradd e a pin 83, extended transversely through the end of said socket member. The pin 83 has its ends `extended through the outer telescopin member 79, which latter is slotted at 84 t erefor to permit the two telescoping members to be moved one within the other to vary the effective length of the connection under the action of the contained spring 81. The protruding ends of the pin 83 overlie the upper cam-shaped end 85 (Fig. l) of a tri ping member 86, slotted near its ii per en to receive a guide pin 87 on the co umn and, at its lower end, jointed to the free end of a lever 88, fulcrumed at 189 on the columnd Betwen itlemsnaid ever 88 is connect a e i il) with the treadle'29. 1111);.; gl 0f the trippin device is forked to atraddle the pusher 7 and is rovided at ita right-hand end with an inc ined surface 91. lIn the normal condition of the parta the rotruding ends of the in 83 stand or below the tops of t inclined faces 91, with the front end of the pusher 77 restin su port 93, secured to the column. 'fa'- ab y the pusher 77 is drawn yeldingly downward toward said support by a spring 94.

W hen the foot treadle is depreed to start the machine, the releasing device 86 n similarly depressed and the moment' the machine starts rotation of the main shaft operates throu the cam 68 (Fig. 6 to lift the rod 64 to t row the bell crank ever 62 forward (Fig. 1), tliereb to sw' the lifting member 57 similary forwa to lift the hom and at the same time through the pusher 77, push the prop`74 into tion under the toe 73, thereby to lock t e said liftin member 57 in ition sustaining the eevated horn. 1t is evident that the prop 74 cannot be pushed under the toe 73 until after the lifting'member 57 has been turned into substantially vertical ition and because of this the usher 77 is made telescoping. as descri to permit it to compress or shorten until the end of the toe clears the upper end of the pro 74, whereupon the compressed spring o the usher extends and pushes the pro under t e toe to sustain the lifting mem r. The parts remain in these positions with lthe horn elevz'ited, so long as the oierator retains his foot upon the treadle. n single nail' work, the tirst rotation of the niain shaft causes the starting awl 25 on the rod 27 (Fig. 4) to be trippe and at the end of said first rotation the cam 37 ermita the rod 10 to drop and stop the mac ine. The operator, however, retaining the treadle depressed retains fneathe b Mitligfactthatafterthepusherf otherbreast 0 of this type an awl is member 67. The member in its turn is returned to its o al position by the weight of the drop 64 and its connected 15 parta, so that, aa will be obvious to one skilled in the art, the horn depresion is controlled by the operator through the treadle. In actual practice upon single nail work,

'theo torwillordinaril de iessthefoot amai?" y p to start the machine, and will, in

order to gain speed, immediately release said tieadle, without waiting for the machine to complete its first :isle or rotation of the sha upon completion of which ft, 88 the machine will stop by reason of the wedge block 8 dro ping under the action of spring 18. The release and depression of the hernia, however, delayed somewhat followthe release of the treadle, reason of `raiaetlto release tlfie 74,it btatan a preeiable or ro to wn fgomundermofthefiftelihalso for thelattertobewithdrawn frombeneath the work support' horn and for the horn to drop, this delay sucient to insure the complete driving of the fastener before the hom drops, ni parta in their' action thus constituting. a delaying device for the horn lame proportion of boot and shoe work requirea'the insertionpf fasteners or nails in sensa, for example in a series extending completely around the heel from one, to the corner thereof and commonly called continuous nailing, or in a series of lncient length to extend around the outer curved portion of the heel onl where the greatest wear comes in use. l'i'i -either case, when once the treadle has been depressed to start the machine it has been necessary that the operator retain said treadle depressed for a sucient time to'cuuse the @chine to drive the required series of fas- .tenere in rapid succession. During this time the horn must remain in elevated position, ex cept that it must be riodieally depirssml slightly to permit It' f the work between the driving of successive nails. -l n machines generally utilized as a feeding device, it being given a transverse movement while in the work, to feed the latter, whereuponl it is withdrawn and the fastener driven lh the awl hole. The

05 periodical depression of the horn for` feedin takes place ordinarily at about, the tinuofginsertion of the awl, to permit the latter to feed the work without resistance, after which the horn is again lifted substantially simultaneously with the withdrawal of the awl to'permit insertion of the nail. Thi.-

.riodical depression of the horn for feeding must take place automatically to keep Fi 1) y providin the horn supporting 48 with a depen ing extension or grip bar 95, preferably squared in cross section and arrand to slide in bearings 96 in the column. tween these bearings said grip bar receives the rip arm 97, having an aperture with wal s to tit opposite 'ripping surfaces of the grip bar but norma l sepai rated by a distance slightly exceeding the diameter of said bar. Between this grip arm 97 and the lower bearing 96 is interposed a spring 98 which serves to retain the gri arm normally in its uppermost and tru y horizontal position in contact with the under side of the up projecting end of grip arm 97 depressed, it rst tips relative to the grip bar 95, whereupon further de ression of said arm will cause the bar an its connected horn to be similarly de ressed to release the work for feeding. is depression of the grip arm is herein eifectedel? means of a lever 99 (Fig. 1 fulcrum at 100 and having its rear en connected by a rod 101- (Fi 4) :lithFthe l)otted arnil of tfherg'o-arin ever ig. reviou re er to as o rated by the 5am 38 oiiv the main shaft. pf each rotation of the main shaft this twoarm lever is rocked to rodnceriodical depression of the lever (Fig. 1 and the horn. always at the moment when the awl or other feeding device is to feed the work.

The elevation of the horn 47 varies, of

course, with the thickness of the work interbetween it and the work-plate ahove, the thinner the work, the hi her the elevaL tion of the horn. This variation is provided for between the lifting lever 57 and the horn l'y the varying compression of the spring 50. he elevated ition of the horn inay var v followin enc i feed of the work, according to the c anging thickness of the work, but the grip device 97 catches the grip bar 96 wherever it finds it and depresses it a given distance for the feed, thereafter releasing it and permitting itto rise with the horn to find `tlu work whatever the thickness of the latter in its new position.

'lo prevent the iirst turn of the main shaft from stopping the machine at the end of the first turn of the shaft when "'ennlinnons" or seriesnailing is desired. l han` p yoviiled a mechanism which l ill non' le- "u'rlbe and, said mechanism as heroin illustrated ls also constructed to permit it to be pace with theespeed of the machine, and this is accom lish in thc present instance (see rbearin 96. If the titi set to a iven or predetermined number of nails at iiie end of the driving of which it will cause the machine automatically to stop, thus ,preventing the drivin of more than the desired number of nais in a series of limited extent. This mechanism, for convenience., I will refer to as a counting mechanism or counter, it being useful for series nailing and availed of herein for continuous nailing, although my invention is not necessaril restricted to its use therefor.

The deiendin wedge actuating rod'. 10 (Fig. 4) imm iately above the bearing lu 12 is provided with a' fast collar 102 willich, when said rod is elevated to start the machine, is raised above the said lu l12 suiciently to permit the insertion t ereunder of a plug or iin r 103 (Fig. 8). This tin r pro'ects laters ly from a horizontal sli ing r 104 (Fig. 10), mounted in bearings 105 on the column, one only of which is shown in Figs. T and 8. This sliding rod .(Fig. 8) is. provided with a fast collar 106,

seated against which is a relatively light spring 107, surrounding said slidin rod and seated at its opposite end inst a loose collar 108 also on said sliding rod, said sprin being normally in compression. Interpose between said fast and loose collars is a e-:econd and relatively heavier spring 109. which surrounds the lighter spring 107 and is shorter than said lifvhter spring this heavier spring being avaired of at certain times only upon compression of the lighter sprin Be iind the sliding collar 108 stands the end of the vertical arm of a bell crank 110, provided at the elbow with a slot 111, which receives a screw 112 on a counter casting o. bracket secured to the column. The horizontal arm of the bell crank 110 is recessed to receive a pin 113 in and near one end of a lever 114 fulcrumed at 115 also on the counter bracket. This lever 114 is shown separately in Fig. 14, but looking from the op osite or front side thereof.

ndei'lying the slotted elbow of the bell crank lever 110 is a laterally extended arm 116, fast on the upper end of a lift rod 117 which (Fig. 1) reaches downward behin the column, controlled by a spring 117* (Fig. 1) and is connected at its lower end with the lon arm of a lever 118. This lever is fulcrume at 119 on the column `and has its short arm connected by a link 120 with a second or series treadle 121. This treadle is shown as fulcruined atthe same point 30 as the starting treadle and (Fig. 5) extends outward to the front of the machine in sub- 'staiitial parallelism with the starting tieadle,

having its outer end turned around to enihrace. the tread end of said starting lever so that the tread ends of the two levers stam side b v side facing toward the machine in position to be acted upon as desired by the and the bearing lug v Il heel of the operator-s shoe (ses Fig. 6). If the starting treadle alone be depressed, the machine4 will be set in ration and will stop automatically after aving driven the first `fastener as hereinbefore described. "If, however the operator swin his foot slightly to the right, so as to e reas both treadles sinn.ltaneously, the secon or series treadle will lift the rod 117 (Fig. 4) and thereb through the ariu 116 at its up r end ig. 8) also lift the elbow of the gli crank lever 110, causing the said lever to swing about the pin 113 as a fulcrum tocause its upper arm to swing to the right, compressing the lighter spring 107 an throu the heavier spring 109, tending to push e slide rod 104 to t le r' ht. This however, is resiste ause.tie n r103 rests inst the side iicthe lug 102,8s in Fig. disnea the heavier s ring 109 is also compreed. Simultaneous yphowever, with the lifti of the rod 117 the starting rod 27 opera by the starting treadle, was lifted, ca its pawl 25 (Fig. 4 to raise the il Ig'.' sleeve 22 and the w ge rod 10 to start the machine and the moment the collar 102 on said wed rod is lifted above the said finger 103, the. atter acted upon by said apri is immediately pushed between said col ar as in Figs. 8 and 10. This retains the wedge rod in its elevated position to maintain the operation of the machine for the driving of a seri of nails for notwithstanding the lifting pawl 25 is thrown out during the first rotation of the shaft precisely as in single nail work and releases the thin sleeve 22, permitting the latter to drop hind said do' the wedge rod itself remains supported y the finger 103 and maintains the machine in operation. When the desired number of nails have been driven, the operator releases both treadles, the startin wedge 8 being restrained from dro ping y the cam 37 until the last fastener has been completely driven; series treadle, rising immediatelly ngen ita release and wrmitting its arm 1 6 8 to drop. iis frees the linger 108, w i is immediately returned (by a spring to be described) to 'its original position a* the left, freeing the wedge rod 10 and leav' the latter to drop and stop the machine a the end of a complete rotation of the shaft. Thus the operator may' by de teasing the starting treadle alone drive nai s ai le and se arated by any desired distances ugh w ich he may shift the work, or by depressing both trcndles he may cause nails to be driven in continuous series ovf indefinite number deter-mined only by the length of time during which both treadles are maintained depressed. This single nail and continuous driving may be alternated by de.- Eessiiig first the starting treadle and then th treadles. o as to drive the nails aingl;

uw no 'recesses 125 in t e as at the corners of a heel, with a series of indetinite number between, as, for instance, around the outer rear portion of the heel.

Frequentl it will be unnecessary to provide more t an the foregoing mechanism rel ing upon theoperators ability and skill in -handling the machine to sto after the required number of nai s have been driven.

the latter in a' series It may be, however, that a new operator or a careless one would drivemore than the desired number' of nails in series, thus causin .a waste of nails, and to prevent this, as We l as to insure uniformity of work, I have provided the counter mechsnism which I will now describe.

Referring to Figs. 8 to 10, the lever 114 durin continuous nailing is maintained with its left-hand end de ressed, as in Fig. 8, by the end of an'arm 1 fast on the end of a horizontal shaft 123, shown in full size in Fig. 11,. This arm is provided at its end (Fig. 11) with a round ended rojection or pin 124, adapted when the arm 1s turned into proper position, t0 engage one or another of a series of apertures or recesses 125 in a ratchet wheel 126 loosely mounted on said shaft 123. The hub of this wheel is surrounded by a coil or clock spring 127 (Fig, 13) secured at its outer end to the wheel and et its inner end to the stationary bearin l128, which surrounds the hub of said whee and through said hub furnishes sul'iciont su port for that end of the shaft 123.

en the wheel is ratcheted to the right (}Fi 8), it serves to wind the said sp ing t ie Aatter returning the wheel to its original position when released.

At its left and front end the shaft 123 (see Fig. 11) has fast upon it a knob 120 provide with a dial 180 Fig. 12) gradusted to cornes nd with t e apertures or ratchet wheel and adapted to be turned into different oeitions relative to a stationary age 181. etween the dial end of the knog and the adjacent bearing for the shaft, is interposed a spring 182 which presses the said shaft normally forward, so as to retain the projection 1211 on the erin 122 at its oppositeA end in Contact with the'face of the ratchet wheel or in one or another of the recesses 125. By pressin the said knob and its shaft axiall rearwar the arm 122 is freed to be turnedyto any desired position, and when released wiil at once spring forward into engagement with the ratchet wheel.

To rotate the ratchet wheel I have provided labove it a pawl 138 formin part of a link 184.- This link' is hung rom' the lower end of a pawl carrier arm 185 which, (Fig. 4) depends from a.U-shaped levier 136 fulcrurned at 137 on a suitable su port? The upper end of this lever is provided7 with a roller stud 138, which runs upon the same ccm 37 that controls the dropping of the tween its fast collar .head of a sliding continuous costoso wedge for stopping the machine. At each rotation of the main shaft the pawl 133 is swung inward to en a a toothof the ratchet wheel and pusli flic same forward a distance represented by the length of the tooth as represented in Fig. 7. '1he pawl is resscd downward toward thc ratchet teeth ya spring 189, (Fig. 4).

The position o the linlc 1M that carries the iawl is elevated or depressed to hold the niw out of or in engagement with its ru tchct i a pin 141 in its end, which pin enters a e ot 142 iii the upper end of a supportin bar 143. This bar extends downward and is again slotted at its lower end to receive a pin 144 in one end of a lever 145 fulcrumed at 115 upon the same fulci'uin stud as thc levcr.114 previously described. The outer end of this lever 145 is connected by a deiidin r link 146 with the arm 116 on the ift ro 117 referred t0.

When the series treadle remains uiidisturbed in its elevated position the arm 116 on the lift rod 117 is depressed and through the lever 145 lifts the bar 143 and the pawl carrying link 134 and maintains thc pawl 133 out of enga ement with its ratchet wheel and there ore prevents any rotation of said wheel. Whemhowever, said series lever is de ressed, if the counter is a propriately scjusted, as will be describe thc iftin of the arm 116 will cause the bar 143 to be ropped, thereby to drop the pawl 133 into effective engagement with the ratchet Wheel.

Fast upon the face of the ratchet wheel 126 (Fig. ll.) is a stud 147, which stands normally in front of the upper end of a short lever 1118, which at its lower end, enga es the horizontal slide rod 104 at a point e- 106 and the hub of the finger 103. The fulcruin oitI this lever 148 is a pin 1119 seated in the lower end of two slots 150, in bearings 151 on the counter frame. The hub of this lever 1418 (Fig. 9) between said bearingsis provided with a aring surface 152, against which rests the in 153, the shank of which is surmoun by a spring 154 seated in an adjustable socket 155 also mounted in said frame. The sprin 154 maintains the fulcrum pin 149 normay at the bottom of said slots.

In describing continuous` nailing it was stated that the slide rod '104 and finger 108 were returned to the left at the close of nai-ling by s. lspring to be described; that sprin is the spring 154 just described. When t e slide bar was pushed to the right to cause. thc finger 103 to pass under the lug 102 on the wedge shaft., the 'lower end of the lever 148 was of course correspondingly pushed to the right an" since the yupper end of said lever rests` normally against the .stud 147 on the ratchet suceso wheel the cllcct wus to crowd the fulcrum piu 1 l!) upwurd iu its slots. compressing the priug 154, und this Sprin r, upon rolense of the lwlide rod 104, caused t ic lutter to be rel'lrued to its position ut the left. For couliiuious" uuiling the nrm 122 on the end of the eountershuft 123 is permitted to remuin iu,it.-: osition (Fig. 8), depressing the outer end oi the lever 114, the inner end of said lever lifting the bar 143 und thereby lifting the feeding puwl 133 away from the ratchet wheel und preventing )eration of the lutter, leaving the' stopping o the machine wholly in thu control .of the series treadle. For leci-ies nuiling, howevenwheie the series` is to coutuin u predetermined number of nnils i oul l uid :lrin 1:22 is turned upward (Figs.

4 und T). und 'its rounded pin 124 ie permitted to enguge, one or :mother of the recesses 125, according t0 the number of nails to comprise the series. This frccs tho lever 1l I. whereupon u Spring 151' connected with the. iimer end thereof (Fig. 8) turns the lever to drop the inner or right-hund end thereof, therehy to drop the pnwl 133 into eugugement with the rntchet wheel. )Vhon the Suid lever 114 is freed und moves, ne eluted, the pin 113 :it its outer eud is lifted to itl poalion Fig. 7, Suid pin traveling in n .elot 157 iu the firm 113 on the lift rod. ipon ilufront .-ide of the lever 114 Fi". l-l) is formed u buck sto) piiwl 158, w ich u* Suid lever is turned un( er the intluenceof its springe 150. is ruieed uguinut. the ratchet wheel to prevent retrograde movement thereof ns it is rntcheted forwnrd.

With theP counter-arm 122 turned into iositiou. e. ne indicated in Figq.. 4 and 7, if both treudles of the machine be now def guessed. the storting treadle `will lift the wedge to Sturt the machine und the Series treudle will` through its arm 110 and lever 145. permit the pawl 183 to engage the teethl of the wheel 120. The first turn of the shaft of the machine causes the awl 133 to feed the rutchet wheel one toot forward, Buttieiently to cause the stud 147 to be moved from its position Fig. 8 to ite, `iti'on'Fig. 7, clearing the u per end of tligqlever 140, which permits the light spring 107, Burroiuidiug the slide bar 104, und stated to be normally under com ireeeion, to throw the lide bar 104 to the' right to cnr its tin r 103 under the elevated collar r102 on e wedge rod to prevent the lutter dro ping to stop the machine at the end of the rit rotation of the, shaft. At euch turn of the shaft thereafter the ratchet wheel is fed an additionul tooth until said arm 122 reaches the upper end ot the lever 148 whereupon theV feed of the ratchet wheel will cause said :mn to turn the @aid lever to withdraw the tinger 103 from beneuth the `wedge shaft, lemvin the latter supported b v the com 37 vvhc will drop it to stop the mechine at the tod of the complete rotation.

By placing the end of the mm 122 nt different points in the series of depri-f. 1onu on the ratchet wheel the number of turnsI c." ,the shaft and the number of the nails to be driven before seid erm reaches the lever 148 und stops the machine, will be varied; and bv udjuiitin this arm according to the dial (Fig. 12) tlie '.umber of nails in any given series ma be varied predeterminately und the mnchine sto pod mt. the end of that predetermined numlher.

Whenl the o rator rel the trendles nfter the machine has come to rest, or during the last turn of the shaft at the close of the series nailing, the nrm 110 (Fig. 7) drops, lifting the slotted bar 143 to .remove the feed pawl from the ratchet wheel. At the sume time the Slot 157 on the said nrnn 110 iulls down upon the in 113 and drops the lever 114 t0 remove t e buck Stop pawl also from the ratchet wheel, whereupon the clock sprin :it the front thereof. which has been wonn during rotation of the rntf'het wheel, turns said wheel to its normul pmition in readine for the timing of u new series of nails.

With the counter in action, as just described, nfter the rntchet wheel has been turned one tooth @o cause its in 147 to clemr the upper end of the lever 14d), the latter was free to turn about its fulcrum pin 149 and turn such lever und nsh the finger 108 under thewedge rod toho d the lWedge in running position. WViththei counter cut out of' me tion, u for instance when the parte ere Minst as in B, for continuous nail ing, there ifi no fd of the ratchet to remove the npin 147 from in front of the lever 148 and 1n suchl case the slide bar can be moved to carry the linger 103 under the wedge rod, only by turning said lever about said pin 147, which means that the socket spring 154 must yield,.and it is made to so Y ield lifting the arm 116 which will canse he bellv crank lever 110 to be. rocked about mid pin 118 und act through the heavier sprmg'100 to slide the nger 108- into position, said sprin 109 being heavier than' the socket spring 1 and causing the latter' to yield to rmit such mt.

Referring to Fig. 10, 'the outer end of the finger 103 slidestinder an overhnnging guide 100, this guide being broren :muy in the other figures. When the counter is in operation and the driving of .n predetermined series of nails is in p operator releases the treadle an drops the arm 116 both the feed and back stop evvls will be removed from the ratchet whee and lthe latter will spring quickly back to its l normal position. deectingg the lever 148 in the light spring 107 was then sucient to its return movement by the in 147 striking the cam end of said lever, tiereby to withdraw the finger 108 and stop the machine.

It is therefore possible for the operator.

when nailing with the counter, as well as when nailing coutinuousl to stop the machine at any moment. ith the continuous nailing, however, the machine will continue to run so lon as the treadles are retained de ressed, while in series nailing after the fu l series has been driven, the machine will come to rest :aitomatically even thouh the operator continues to hold the trea es depressed.

\Vith the counter in operation if both treadles be dhpressed and instantly released, a single nail only will be driven, because the return of the treadles and their connected parts will cause release of the ratchet and its instant return to normal position after the first nail has been driven. Vith the counter mechanism, therefore, nails ma be driven singly or in series of predetermined numbers according to the criod of depression of the series treadle. l n ordinary )ractice, however, the startin trearlle on v is preferably used for sin de nailing. The spring actuated return o the ratchet wheel brin the latter always to a given normal sition by reason of a stop pin shown in `ig. 13 at 161., which brings up against a stolp 162 on the frame.

n Fig. 15 is shown one form of fastener iiisertin mechanism for driving fasteners supplie from a hopper 170 and directed to the noint ofinsertion by a chute 171. The usual oscillatory head B has a vertical passa e 172 for a driver bar 173 carrying a driver 174, and is rovided with a` roper bcarin as usual, or an awl bar 1 6. A strut 1 6` is jointed to the u per end of the driver bar and a lever 17i pivoted to a bracket 178. A coil spring 179 is interposed between thelever arm and a fixed part of the frame to drive the bar downward suitable ad'ustin means 180being rovided to adjust t e spring tension. To i the driver bar a there is provided a lug mounted u shaft. 3, w 'ch lifts the driver bar at each 181 on a cam 182 'rotation of the shaft, permitting it to drop from the projection, and, under the action of its sprin drive the fastening, as will be clearly un erstood bv there skilled in the art.. The usual rock shaft F mounted on the side of' the machine head is'provided with an inwardly projecting arm 183 having a seginental gear 182 to engage suitable teeth or a rack 185 formed upon the awl bar 175.

The above described means for inserting a fastener may bdof usual or of any desire( ccnstructionfand where nails are supplied from a hopper, as in the type of fastener inaerting means illustrated, a nail separator inst the action of the spring 179,

n the front end of the driveA 186 is provided which may hc actuated by a cam 187 preferably driven by suitnhhI gear connection from the driving shaft 3. 'lhc illustration of Fig. 15, together with the above general description, will he sufiicieut for those skilled in the art to understand the characteristic 'of a fastener inserting mechanism for uso in combination with the other features of the present invention without further elucidation.

'While i have shown details of mechanical devices which have been found well adapted to ca the invention into effect, it is to be undersood that said invention is not restricted or circumseribed thereby, the essentials of the invention being defined in the claims by intentionally broad langue e coinprehensive of various forms 'or emb inients thereof.

laims.

A machine for inserting fasteners, coinprising in combination, a driving shaft, fastener inserting means in operating relation thereto, a work sup ort, means operable from the driving sha t for raising the work support to position the work, starting and stopping mechanism for said driving shaft, nicchnnisni o )ei-able from the driving shaft for pcriodicaily depressing the work .support for feeding, and means independent of the driving shaft and stopping mechanism for effecting the'final depression of the work support.

,52. A machine for inserting fasteners,com prising in combination, fastener insertin mechanism, a work support, power operate means for raisin the work support to position the work with relation to the fastener 'inserting mechanism, starting and stopping mechanism, )ower operated means for periodically cpressing the work support to permit feeding of the work, and trcadle o rated means independent of the driving s aft and stoppin mechanism to secure the final depression o the work support` 3. In a nailin machine. the combination of a nailing hea, a driving shaft thereon, a work support, means actuated from the driving shaft for raisin said su port to position the work with rc ation t o t ie head, a catch to hold the work support in the position to which it has been raised starting and sto ping mechanism for said rivm s haft, an trendle operated means operab e independent of the stopping mechanism to tri the catch and effect depression of the work support.

4. In a nailing machine of the character described, the combination of a nailing head, a driving shaft nioiuitcd tlurcoii, a work support, ower o rated positioningmeans actuated y the riving shaft to raise the work sup ort and position the work stopping mec anisin for said shaft operable independent of said positioning means, and

sono

treadle controlled devices independent of the stopping mechanism to effect final depression of the work support, at the will of the o raton 5. n a nailing machine, the combination of a nailing head, fastener inserting means mounted thereon, a work suppoit, positioning means to produce relative approach of said fastener inserting means ant work support to position the work with reference to the head, treadle operated starting and stopping means for said fastener inserting means, series means for rendering the starting and stopping means ineffective for stopping the inserting means for variable predetermined nail driving riods, and a series treadle independent o the first named treadle for causing the series means to become effective for the purposes stated, and means for separating the work sup ort and fastener inserting means at the will of the operator.

6. In a machine for inserting fasteners, the'combination of a iiailin head, fastener inserting means mounted t ereon, a work sup ort, power operated means for raisin sai support to position the work with re erenee to the lieiid, stopping mechanism for said inserting means, and means to suspend the action of the stopping mechanism for predetermined nail driving periodi-na tieadle for bringing said suspending means into action and means inde .ndent of the sto ping mechanism for egtcting the final dppression of the work support.

7. In a machine for inserting fasteners, the combination of a head, fastener inserting means mounted thereon, a driving shaft for said fastener iiisertin means, a worksup ioi't, means actuated rom tl.' driving sha t to raise the work-support to position.

the work for the action o the fastener inlserting means, starting and sto ping mechanisni for said shaft, a treudle for engaging and actuating the said mechanism to start the machine, means for then disengaging said treadle from said mechanism, means for continuing the machine in operation and permitting it. to stop after a number of fasteners have been inserted, and means operative by said trcadle to effect the filial depression of the work support. independent of the stopping mechanism.

S. In a machine for inserting fasteners, the conibiinitioii oi a nailin. head` a work support to sustain the work in proper position with reference to the head. fastener insertingr means mounted on the head and constructed and' arranged to selectively insert fasteners singly and in predetermined series, means to automatically stop the muehine upon the completion 0f either 0f the i selected fastener inserting operations and manually operated means for causing final depression of the work support.

0. In a machine for inserting fasteners the combination of a nailing head, fastener inserting mechanism mounted thereon, operating devices therefor, a work support to `sustain the work in position with iespeet to the head, and contro ling means for saidmperating devices comprising starting and stopping mechanism for said fastener inscrting mechanism, provisions for selectively suspending the operation of the stop ing mechanism to effect either predetermin series or continuous driving and means indendciit of the stopping mechanism for efeeting the final depression of the work support.

10. In a fastener inserting machine, the combination of a work support, a head, a fastener inserting mechanism mounted thereon, opei'atin devices therefor, including a driving sha t, treadle controlled means for starting said operating devices, means acting norma y to stop said operating devices upon a complete rotation of the driving shaft and the insertion of a single fastener, means to suspend the action of the said normally act ing means, and mechanism to automatically free the stopping devices to the action of the ,normali y acting means and stop the machine when a predetermined number of fasteners have been inserted.

11. In a' fastener inserting machine, the combination of a head, fastener inserting mechanism mounted on said head, operating means therefor, a work support to sustain the work with reference to the head, n. counter mechanism for controlli the operation of said means and effect the insertion of a predetermined variable number of fasteners, means for renderin the counter mechanism inoperative and e ect the insertion of varyin numbers of fasteners and means indepen ent of lthe stopfping mechanism for separating the head an work support.

l2. In a machine for inserting fasteners, the combination of a work su port fastener inserting mechanism, a driving shaft and actuating means thenefor, means actuated from the driving shaft for raising the work' support, devices "for operatively connecting the driving shaft with its actuating means, treadle actuated means for operating said devices, a trip to free said devices from the treadle actuated means upon rotation of the driving shaft, and sepsratemeans to maintain the said devices in ition operatively connectin the shaft nndmilts drivin means for varia le nail driving periods w en said devices are freed from treadle control, and means independent of the operative' condition of the machine for effecting the final depression of the work support.

13. In a. machine for inserting fasteners singly or in series, a work support. to sustain the work with respect, thereto fastener inserting mechanism, means predetc. `matel l' feet delayed de ression of sai to vary the number of fasteners comprising a series, and automatic controlling devices for said fastener inserting mechanism, one oierable to effect the insertion of fasteners singly and the other operable to effect the insertion of fasteners in series.

14. A machine for inserting fasteners comprising in combination fastener inserting means, stopping and starting mechanism therefor, a vertically movable work support, means to elevate it and means independent of the stopping mechanism and including a series of successively releasing ropa to efwork support to ermit t e fastener inserting means to comp etely drive the last fastener prior to the final depression of the work support.

15. A machine for inserting fasteners comprising in combination fastener inserting means Stopp' and starting mechanism, a 'vertically molilvlile work support, means to elevate and depress it, a rop to sustain said work support in eleva position and a second prop controlling the release of said sustaining pro and means actuated by the attendant ang operable independent of the stopping mechanism for releasin said props.

' 16. A machine for insertin fasteners, .comprisingin comb'. tion, fastener insert. ing mechanism, startlili and stoppin mechanism therefor, a work support, a li ter for raising said work support, a prop for maintaining the lifter in position to hold the work support raised, means for operating the lifter a prop pusher'for operating the prop, and treadle controlled means operable tri the ro a miiichline for inserting fasteners, the combination of fastener insertin mechanism, a work supporting horn, a li r for raising said horn to ltion the work, a prop to hold the lifter in` horn supporting position, a clutch member and operating means therefor means to periodically depress the horn for feeding, and treadle controlled means operable independent of the machine operation to trip the prop.

18. In a machine for inserting fasteners, the combination of fastener inserting mechanism, a work supporting horn, a horn supporting rod, means for raising said horn to position the work, a grip bar connected to said horn supporti rod, a grip arm loosely mounted thereon, a ever 99, power operated means to periodically act upon the one end of the lever to depress its actuating end against the grip arm to ti the same into biting` contact with the grip ar and then depress tlie horn, and means for spin raising the horn.

19. lin a machine for inserting metallic fasteners, the combination of nail driving mechanism, a work support and means to raise the work support with respect o the iiail driving mechanism for positioning the yvork a driving shaft and means for operaiing the same, means for connecting the shaft to .its operating means for actuating the nail driving mechanism, a treadle o erated starting pa'wl, a trip to throw sai pawl out of operating position, means to maintain o )ei ative connection between the shaft 'andl its operating means for driving a plurality of fasteners after the starting pawl has been ,-5 tripped, and means independent of the' rmichine operation for effecting the final depression of the work support.

20. In a fastener inserting machine, the combination of a drivin shaft, fastener inserting means in o erative relation thereto, a vertically mpvab e horn or work support, means operated from the driving shaft for riodicallj," depiiassing saidl horn to ermit ceding the work, means also o rat from the driving shaft to raise the liirn or work support as the machine is started to posi-l tion the work for the action of the fastener inserting means, stopping mechanism for bringin the fastener inserting means to rest, an a treadle for manually controlling the final depression of the horn inde endent of the action of the stopping mec ianisin.

21. In a fastener inserting machine,the combination of a drivin shaft, fastener inserting means in operative relation thereto, a horn or work support, a treadle, means operated thereby to start the machine, means 'operated from the driving shaft for periodically operating said horn or work support to permit feeding the work, power operated means for raising the horn or Work sup ort to 'tion the work for the action o the fasgiiiir inserting means as the machine is started, stopping mechanism acting independent of said treadle for stopping the nction of the fastener insertin means, and means controlled by 4said trea le for effectin the final depression of the horn.

g2. In a fastener inserting' machine, the combination of a driving shaft, fastener in-. serting means in operative relationl thereto a horn, or work su port movable up andi down, a cam on said) dri shaft, connections between said cam an horn orvfork iis su port operated by said cam to automatical y raise said horn or worlr su port when the machine is started, means independent of said shaft for holding the horn or work 4support in raised position, stopping mecli- 120 -anism for said fastener insertin means, and a treadle for manually control ing the linsl de ression of the horn independent of the stopping mechanism.

23. ln a fastener inserting machine, the 125 combination g a driving shaf. .fastener iiiserting means operatively associated there with, a horn or work su port, connecting mechanism between said aft and hein or l worlr support to periodically depress said 130 oss-,oas

horn or work support to allow feedipeg the stock, independent mechanism actua by said shaft and operatin on horn or work sup rt to raise e saine whenthe machine is started, means independent of said shaft for holding the horn or work support in raised position, a treadle for starting the machine, means eective to stop the machine independent of the said treadle, andI means controlled by the tadle to trip the horn or work support holding means.

24. In a fastener inserting machine, the combination of a drivin shaft, fastener inserting means associa therewith a horn or work support, a treadle, means for starting the machine upon de ression of said treadle and for stop ing e machine independent of said trea le, means connected to the driving shaft for ra' the horn or work support asA the machine is started, means operated from the driving shaft for periodically operating the horn or work support to permit the work to be fed, and means controlled by' said treadle for effecting the final depression'of the'horn or work support.

25. In a nailin v machine, the combination of a driving sha t, fastener inserting means operatively associated therewith, aworlr support, a lifting lever for said vvorkv sup rt, means operated from the driving sha to cause the lifting lever to raise the Work support as the machine is started, means operated from the driving shaft to periodically de ross the 'work to permitthe work to be fe means to hold the lifting lever in position with the work su port raised, and a tresdle operable after e fastener inserting means has been stopped fortripping the holding means to effect a final depression of the work slip rt.

26. In a nai in machine, the combination of a driving sha t, fastener inserting means operatively connected thereto, a work support, means operable from the driving shaft to raise the work support with relation to the fastener inserting means as the machine is started, means operable from the drivinp,r liaft for periodiciill depressing the wort support to permit t e work to be fed, u treadle for starting the machine into operation, a second treadle and connected mechanism to cause the machine to continue in' operation, and means controlled b the first named tieadle to effect the final epression of the horn after the fastener inserting moans has been stopped. v

27. ln ii nailinv machine, the combination of a driving .sha t, fastener inserting means operatively connected thereto, a work support, means operable from the driving shaft for raising it as the machine is started, clutch members associated with said shaft, a clutch controller for operatively connecting and disconnecting said clutch members, means for operati the clutch controller including a lift w or finger, a treadle oonnected to said ift awl or fi r, means operable from the driving shaft or tripping the said pawl or finger to permit the chine to stop independent of the t is, and means controlledrby the said treadle to eect the final depression of the work suprt. P028. In a naili machine, the combination of a driving sha fastener means operatively connected therewith, a work aupport for sustaining the work for the action of the fr inserting means, means operated from the driving shaft for raising the work support into operative relation with the fastener inserting means as the machine is started, means to start the machine into operation, including a treadle independent means for continuing the machine in oper ation and mea'ns controlled by said treadle to edect the final depression of said work support 29. In a nail' machine, the combination of a driving shlii, fastener inserting means operatively connected thereto, a work support for sustaining the work for the action of the fastener insertinv means. means Opelmi from the driving haft fdr raising the work support into operative relation with the fastener i means, operating means for said shaft, a treadle, means connected to the treadle for starting ,the said operating means into action, said means then becoming inoperative with respect to the said operati means, and means controlled by said tres e for manually effecting the final depression of the work support.

80. In a nailin machine, the combination of a driving sha fastener inserting means operatively connected thereto, operating means for said shaft, a work su port, a lifting h for raising the work support as the machine is started, a toe and prop for -liolding'the work support in the sitionto which it is raised by the lifting ever, a tripping member to effect disen gement of t e 'toe s nd prop, and a trea e controlling said trip ping member.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

WILLIAM C. STEWART. lVitncsseS:

Roswani. F. HATCH, (leonor: l". STEWART.

lever connected to said driving shaft

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