US2498762A - Sole fitting machine - Google Patents

Description

Feb. 28, 1950 Filed June 20, 1947 MAWBEY 2,498,762

SOLE FITTING MACHINE 4 Shee'ts-Sheet 1 Inveni 0r Feb. 28, 1950 MAWBEY 2,498,762

SOLE FITTING MACHINE Filed June 20, 1947 4 Sheets-Sheet 2 Feb; 28, 1950 L. MAWBEY 2,498,762

- SOLE FITTING MACHINE Filed June 20, 1947 4 Sheets-Sheet 3 Invenior LawrenceMa wEey Feb. 28, 1950 L. MAWBEY SOLE FITTING MACHINE 4 Sheets-Sheet 4 Filed June 20, 1947 Invenior W w g slashing device. In accordance with this fob;-

Patented Feb. 28, 1950 :U lTED STATES PATENT OFFICE 24 5,23 so lerrr rme Mac ine Application June 20,

1 d, assiengr men? 1947,.Serial No. 755,861

In .GreatBritain July 13,1346

7 Cl airns. l 1

Ehisiprentb rela s t .sp efiitin ma h ne and'is herein illustrated and described as enr- PQQ e -in anne g maeh n of h e di c'lo'sed 111' Uni e =$tetes L t a e t whe rant d Pri1-2 u o e a cation of Frederic Bertrand. 'Sucha machine i us d to, c t ap nf ch n ls i a sole. the resulting. channel lips being raised back-to back to .fprma sewing rib. To reduce considerably ha-tenfl nq therai ed chan l to re ur to their original positigns, it is customary to make transverse slashes in one or both lips or in the sole material from which the lips are to be out. To avoid unduly weakening the sewing ribs, these slashes should be spaced apart a .distance considerably greater than the length of the feed strokeof the machine. Channeling machines equipped to form such slashes are, therefcrefusually arranged to permit the machine .to make several feeding strokes for each slash. However, channeling machines of this type are provided also with mechanism for enabling the length of the feed stroke to be shortened when going around the toe portion of the sole, thereby necessitating some further provision for pre; Venting the slashes from being brought too close together at that portion.

';I ?he channeling machine disclosed in Letters Paten 2,242,445, erran May 20, 19 1 upon the application of William N. Bray and Charles M. Bagshaw is equipped with an arrangement for forming slashes in the lip in proportion to the number of feed-strokes of the machine, and also with means for increasing this ratio, that .is,

requiring a greater number of feed strokes to I stroke of the slashing mechanism can tahe place,

this counting mechanism being automatically adjustable to render the required number of cycles greater when the'feed stroke .isshortened. "It is an object of the present invention td provide} in a channeling 'machine .of the "type under consideration; a s1ash'ing de'viee which is mer rugged in construction and inoredefinite itvith regard to the ratio of the slashing strolres to the feed strokes of the machine than any prior ectt illiljs'tijated' machine is provided with at set-tw semen ree s-swer e g at ate i chara ter st s sfa mea 1 g mascara follower with either. pr these c s. flt eerm cnera me cyc e-h th lma usedmhenein, fiers .to, of a series of operations=wjhich are repeated during .the' channeling 9 m w rkriece .si che a solee m laa n a m h ne m w na m sha n's in n es such as .the.;ne .1 illustrated herein, an ,operat' cycle .w-ouldbe :the lm merit of .a .chann knife .froniLthe .ti neiit starts .on .acutting str until it is ready, rt9 start von the next icu'tti 5 stroke. In 'a machine wherelthe channel' g knives are'stationary and the workis forced the knives by' feeding means, sueh asan lating .ieed .foot, onepomplete ltd-andj frpam ye w n 'Q =h'- cat1s-wb ld be a QP I-afi l @Yqle #These andotherlieatures Qfftheirivention, in; c i qe -taia 1 e tmq qne s m hi e i n eth n -W1 2??? .nw eee b qi fn i s rative ch'i eanaw be minted 9 theap fin ed aims- 1 Re a t eaccompa yin .qraw nea ,1 s, a,-frori tje ationlofahead 9f @hfillus; n tive channelin m chineem ed e th in: vention; F ise an ele x -the mac ne-P e? 'F 'i- 3 re a new ta en a the the H 11 in sid elete qn e e 99m .P eler iens th r n; p Q Q 11 1 Ii n ieneieeeii ee Fig. 9 is a plan view, partly in section, of the sole engaging instrumentalities;

Fig. 10 is a front elevation, partly in outline, showing a manual control for the slashing knife;

Fig. 11 is a side elevation of a portion of the control mechanism shown in Fig. 10; and

Fig. 12 is a plan view of the channel knife As shown in Fig. 8, the work-engaging instrumentalities of the illustrated machine comprise a rotary work table 28 for supporting an insole S, a pair of channeling knives 24 and 26 (see also Figs. '7 and 9), a presser gage 28 associated with the channeling knife 24, a presser gage 38 associated with the channeling knife 26, a work retaining foot 32 (Figs. 1 and 2) for holding the work stationary during the cutting strokes of the channeling knives, an edge gage 34, and a pair of slashing knives 36 and 38 (see also Fig. The channeling knife 24 makes an incision into the edge of the sole S to form a lip L and the channeling knife 26 makes an incision into the face of the sole S to form a lip L. Although both knives are channeling knives, the knife 24 will hereinafter be called the edge knife to distinguish it from the knife 26 which will be termed the channeling knife. With the exception of the slashing knives 36 and 38, the members so far mentioned are similar to corresponding members of the machine disclosed in Letters Patent No. 1,028,801, above referred to, and are incorporated in a machine of generally similar construction.

The supporting structure, of the illustrated machine comprises a head 48 (Figs. 1, 2 and supported upon a column 42 which is adapted to rest upon the floor.

The channeling knives, the presser gages, and the slashing knives are all mounted, indirectly, in a swinging carrier 44 (Figs. 1 and 2) which is pivotally mounted upon a pair of cone bearings 48 to enable said knives and presser ga es to swing to and fro in the direction in which the work is to be fed. The carrier 44 of the machine herein illustrated is similar to the carrier identifled by the numeral 34 in Letters Patent 1.023,801. and it is similarly operated. The bearings 46 likewise are similar to the bearings 132' of the patented machine.

Referring to Figs. 8 and 9. it will be seen that the slashing knife 36 is arran ed to slash that portion of the insole in which the lip L is to be formed, and that the slashing knife 38 is arranged to slash that portion of the insole in which the lip L is to be formed. These knives. in order to avoid slashing into the between-substance, are spaced a art in a direction transverse to the line of feed by a d stance greater than that which se arates the ti s of the knives 24 and 26. It will be noticed also (see Figs. 9 and 5) that the slashing knives .36 and 38 are staggered slightly in the direction of feed.,the knife 36 being positioned sli htly behind the presser gage 28 and the knife 38 slightly behind the presser gage v38. The slashing knives 36 and 38 are carried by the lower end of a bar 48, with provision for independent adjustment toward and from each'other. The upper portion of the shank of the knife 36 is slotted to engage a complemental tongue formed on the lower end .of-the bar 48 for adjustment transverse to the 'line of work feed and is clamped in its adjusted position to the bar by a screw 58, The knife 38 has a similar tongue and groove connection with the bar 48 and is clamped thereto by a screw 52.

The bar 48, along its intermediate portion, is guided for heightwise movement in a guideway 49 (Fig. 12) formed in a carrier 2l3, later to be described, which swings with the carrier 44. On the upper end of the bar 48 is formed a block 54 (Fig. 5) which is secured by a clamping bolt 56 to a bracket 58. The bolt 56 extends horizontally through a hole in the bracket 58 and through a heightwise slot in the block 54 to provide for heightwise adjustment of the slashing knives. Threaded through the upper portion of the block 54 and extending down into the slot, above mentioned, is a screw 68 having a capstan head. The lower end of the screw 68 engages the bolt 56 and the head of the screw 68 engages the lower surface of a lug 62 extending from the bracket 58, the screw 68 thus being held against heightwise movement relative to the bracket 58. It is evident that when the clamping bolt 56 is loosened the height of the slashing knives relative to the bracket 58 may be adjusted by turning the screw 88.

The bracket 58 is pivotally connected by a pin 64 (Figs. 1 and 2) to the lower end of a link 66, the axis of the pin 64 being parallel to that of the pivotal support 46 to enable the bar 48 to swing with the carrier 44. The upper end of the link 66 is pivotally connected by a pin 68 to a cam lever 18 which in turn is fulcrumed upon a stud i2 fixed in the head 48. A torsion spring 14 urges the lever 18 in a counterclockwise direction as viewed in Figs. 1 and 2.

In order to determine the precise time, relative to the to-and-fro movements of the channeling knives, at which the slashing knives may thus be operated by the torsion spring 14, there is positioned directly beneath the midportion of the cam lever 18 a cyclic cam mechanism including a shaft 16 journaled in suitable bearings in the head 48 and having its axis parallel to that of the pivotal mounting 46. The shaft 16 is driven, by suitable gearing, in synchronism with the main shaft of the machine which actuates the swinging carrier 44 and the channeling knives. Mounted on the shaft 16 directly below the cam lever 18 is a snap cam 18 which is gen erally spiral in contour and which has an abrupt cam drop. Secured to and extending down from the cam lever 18 is a hardened steel wear block 88 adapted to ride upon the periphery of the cam 18. The cam 18 is so arranged that once in each cycle of its rotation its radial drop comes directly beneath the wear block 88 at the instant when the channeling knives have conclud ed their retracting or work-feeding step to the left and before they begin to swing back toward the right to effect a further channeling cut. At this instant, therefore, the cam lever 18 will be snapped down by the spring 14 to cause the slashing knives 36 and 68 to slash that portion of the insole in which the channel lips are to be formed, provided, however, that certain restraining means, shortly to be described, have previously released the lever to the action of the spring. When the lever snaps down it is brought to rest by contact of the wear block 88 with the cam face at the inner end of the radial drop in the cam and continued rotation of the cam will, therefore, raise the lever and the slashin knives to their initial operative positions.

The depth to which the slashing knives slash into the insole on descent of the cam lever 18 is controlled by adjustment of the screw 68. .To

avoid any chance of the .slashing knives.strik-- ing the work table by reason of excessive down- [la h ward adjustment, the bracket 58 .is. proyidecl. with a tail 8| (Flgs..1. and 5). which en ages asafelN lstopintheiform of Na. rubber pad 83 .(s,ee'..a s Fig. .12). to. absorhshock; JThe' pads3 is mounted in a cup 85 havingv a'j depending'threaded shank 2.|"hy which the cup is adjustably secured on-the carrier2l3.

..With a view to allowing .the slashing knives to descend. to slash the insole only. after chosen time intervals 'during which a series of workfeeding movements areimparte'd to the insole, the illustrated machine is provided. with a cam lever restraining means which..prev ents descent 0f the leverlflifor each cycle of the machine and allows its descent only afterthe main. shaft has made a predetermined number of. revolutions and the channeling knives have 'efiected' a corresponding'p'redetermined number of work feeding. and channeling 'actions'on the insole. LZIhisre'strain- "ing"me'a'ns thu's holds the slashing knives raised against the -forcehf the'spring 141 .The restraining orholding means comprises an auxiliary cam shaft 82 (Figs; 1L3 and extending parallel to the camshaft- H5 and mountediin a. station ary bracketed justbelow the. stud 1.2. cThe shaft 82 is driven by editable gearing, arranged at the rear oftheinachine, at one-twelfth; the speed o'f the i'n'ain shaft; More or less directly below ;th"stf1'd [2 are mounted upon the shaft 82 .a hair'of cam'diskstfi andl88 arranged side .by side along the shaft B2 and secured together-v for rotation aset'imit. -Th'e cam disk 86' has formed 'nfion'it'three equidistant 'cam-snugs. 6 .profleeting radially fronlilit and .the cam diskd has "two eani-sn'u'gs' QZ'arr'anged diametrically there-.

on and also extending radially therefrom. When thicamfiisks are driven, as will hereinafter be v'explained;'eachofthe carn-snugs on a selected'oneof the am 'di'sks'serves' to actuate'a' re- .straininglatch infsuch amaneer as to re- .f le'as e theca'n'i lever "Ill tothe control of the snap vml Since the auxiliary cam shaft {32 is driven at welfthf 'the ste for the main" shaft and 0 .th nabj'cai'n lB; it is evident that'vvhen the gem 'dilskQBB is operative the desc'ent of the cam lever '10 and,the slashingjknives willtake place once. in 'jeveryj fonr jwork -feeding movements of "the channeling" knives and their associated pressergages. ,Simi1arly, when the carn'disk 88 is on rati'veigthe slashing n ves ,will ,be allowed 1 to ,des cnd once forevery l sixwork -feeding rnove- .m t

"Therestraininglatch M (Fig. 2), just referred I 7 t0, omprises T a horizontal bar extending 'ividthlyirise' of the inach'ih' aboveit'he auxiliary cam LS hJftIBZ. Forfhe d iqn the 18ft 6nd of jthe 914 .is dbstandiri'g' toe sac (Fig.1) which, a en'the latch i's'inifoperative position for res'trainin'g the barn lever "l'filfengages anotch 91 Q forined in the under surface of a secondary 'latchfit' "pivotany' 'liiountedat its upper end upon a stationary "'iiin lilD'la'nd having at its lower lend ledge iU'ZQengageabIe witha notch forrned in the rfearj oizti n r the jwear'block an." A 9 pressedjilunger,[04 normally holds the ch SBIalgairis t the side of 'the.wear

block 80 ,t airitain the seco dary latch in' its latching position? The leftha'nd portion r the gjlatch as "is 'snnnorted upon a staver which the latch slides freely.

lning latch 94' nd the secondl l hj il' oi hw infi i 1 t' r;iai atgtted ne t "with each revolutionof the map cam" 18.

in the arm- |l 2 is adovetail gnidetvay I14 and mounted inthis guideway is. a slide H6 (Fig'. 1)

having a cam-, contact H8 projecting from it toward. th e peripheries of the cam disks and into the path of the camsnugson oneor the other thereof. A tension spring I253 anchored atone end .to aifixed. portion of the head .40, and atits opposite end to the .upper portionof the lever ,HJB, urges the lever toward the cam disksas far as. permitted by the contact of aface'llfl on the leverwitha cooperating iace on the machine head.

It is evident that the spring J26 tends normally tohold the toess er the restraining latchfil tin its carr -levererestraining position. .I-Ioweyer', the cam -snugs p one or .thepther of the cam disks B6 and .88 by engagement with the ca ncontact H8, rock the lever {$8 toward the night and thus withdraw the ledge H02 of the secondary latch 38 from beneath the wear olockttl n'the cam lever 10, thereby releasingthe car'n lever to the control of thecanl 1 8. The abrupt drop in this c n almost mm ie el fi me nt p to permit the torsionspring 14 to urge the slashing kniyes doyvn into the' work, whereupon the continued rotation of the cam l8. raises thecam 4 lever 70 high enongh for it to beieng aged by the led e .14 o s ond ry latch .93. wh c by this time, will have peenreturnedto' its latching pos t T leve lflwi l hu be hel in it rais d, .pos tio n ,t e n Pa -51 .1 wed e the cam-contact H8.

Fjor operations along the sides of the insole, it

.is desirable that, the cam lever 1 as, be ubjected to the controlling action. of the cam 85, which i proyidedwiththree snugs, thereby causing the slashing-knives [to perform a single operation for er fo r h eedi m vem n f t e in o Whe th hann ling i e n r ri rmed. gued the toe end of the insole and the length ofythe ie din tmereme s sms- .1 n orde to $34 lita e th channelin ar e rf i. t is d ira that the camev r .198 be co r l e by. the. .cam

.38 wh h has .tw ,snues, he y .p v ne a .1.01 theinsQle.

sl shin action foreyel rsiX h-icedins movement The,illustratedmachine isprovided withmeans for automa ically .selcctin the d ired cam, .suich .meansbeingoperated byv an.arm..l.89 (Figs. 1 and..2.) Whichzissimilar' to the arm. numbered 'ljfiintLetters Eatent1,023,801,1above referred to. Thearm' 109 ,is connected to the cam-contactsuppo'rting slide l.l6..iby mechanismnow .toJoe described. Extending. through. a horizontal slot 1.23. (Figs. .2. and 4) .fOrmed .in @the. ba'seldfthe guideway AM and engaging a .heightwise slot forrned'in thebslide I I6.is a horizontal. pin. 5.24

the outer end .por'tionoiwhich is securedinthe upper end of 'anfarm 126 of. a., bell crank lever which is pivotal ly .rnounted upon aistationary stud-.1 28; Thislbell. cranklevehhas a forwardly and downwardly cnrvedarm .Hlifth'e forward end of "which is connected bya strong and. i'earwardly .ext'endin'g tension" spring :32. tethe i'ear end ."of "mean 34. This lver 124 is 'pivctauy" m'oiint'ed upon a stationary transverse pifi I36 positioned about halfway between the forward end of the downwardly curved arm I30 and the stud I28, on the same level as the stud I28.- Tlie lever I34,- as will presently be explained, is arranged to be swung about its pivot I 36 to carry its rear end alternatively to positions above and below the stud I28. When the rear end of the lever I34 is above the stud I28 the spring I32 will pull upwardly and rearwardly upon the forward end of the arm I30 and will thus rock the bell crank lever I26, I30 in a clockwise direction as viewed in Fig. 4 and move the contact-supporting slide I I6 into position to be engaged by the two-snug cam 88. Conversely, when the rear end of the lever I34 descends below the stud I28 (in which position it is shown in Fig. 4) the spring I32 will rock the bell crank lever in a counterclockwise direction and thus cause the slide IIB to be moved into a position for engagement with the three-snug cam 66. Secured to the lever I34 is a plate I38 having an arcuate slot which cooperates with a stationary pin I46 to limit the extent of the rocking movements of the lever I34. A similar arrangement, comprising a slotted arcuate portion I4I of the bell crank lever I26, I36 engaged by a stationary pin I42, limits the rocking movement of the bell crank lever I26,

Operation of the lever I34 is effected through a link I44 the upper end of which is pivotally connected to a forward extension I46 of the lever I34. The lower end of the link I44 pivotally engages a trunnion pin I48 extending forward from a trunnion block I49 which in turn has a transverse pin I50 (Fig. 1) extending into and freely rotatable in an arm I52 of a bell crank lever. This bell crank lever is pivotally mounted for free rotation upon a shaft I54 which corresponds to the shaft numbered 158 in Letters Patent 1,023,801, above referred to, it being noted that the feed-length controlling arm I09 is secured upon the same shaft. A treadle rod I56 connected at its upper end to a crank I58 extending from the shaft I54 causes the arm I09 to descend when the treadle is depressed and such descent of the arm I causes the length of the work feeding steps to be reduced as has already been described in the Letters Patent just mentioned.

In the illustrated machine, the descent of the arm I09 is utilized also to rock the arm I52. For this purpose, the bell crank lever comprising the arm I52 has a downwardly extending arm I60 to which is pivotally connected, by a pin I62, the right hand end of a link I64 lying beneath and substantially parallel to the feed-length controlling arm I09. Extending forward from the arm I09 and rearward from the link I64 respectively are a pair of pins I 66, one below the other. A more or less vertical link I68 has a pair of longitudinal slots I into which the pins I66 extend. A downwardly extending tension spring I12 connected at its upper end to the upper end of the slotted link I68 and at its lower end to the arm I09 acts normally to pull the link I68 down relatively to the arm I09 as far as permitted by the engagement of the upper end of the upper slot I10 with the upper pin I 66. A second and somewhat weaker tension spring I14 connected at its upper end to the upper end of the slotted link I68 and at its lower end to the link I64 normally lifts the link I64 until the pin I66 extending from it meets the upper end of the lower slot in the link I68. Relative heightwise movement between III 8 the arm I09 and the link I 64 is thus permitted to take place in either direction.

Means for operating the link I64 is mounted upon a crank I16 which is like the crank numbered led in Letters Patent 1,023,801, above men tioned. This means comprises a bar I18 mounted in a guideway formed in the crank I16 to provide for heightwise adjustment, it being understood that as the crank rocks to perform its normal operative movements, the bar I18 will rock with it. The bar I18 is secured in adjusted position in its guideway by a screw I19. The upper end of the bar I18 projects above the crank I16 and lies close by the side of the link I64. Extending upward from the link I64 is an ear I presenting at its left hand side a flat face adapted to be engaged by the right hand face of a rearwardly extending block I62 on the upper end of the bar I18. When the arm I09 is drawn downward by the treadle to cause a reduction in the length of the work feeding movements, the link I64 moves downward with it and the upwardly extending ear IE0 is lowered into the path of the block I82. If the under surface of the ear I80 should descend upon the upper end face of the block I82, the link I64 may yield upward and, as the block I82 moves toward the left, it permits the ear I80 to descend on the right hand side of the block I82. When the bar I18 next rocks toward the right the block I82 will engage the ear I80 and will thrust the link I64 toward the right, thus rocking the bell crank I60, I52 in a counterclockwise direction and causing the slide II6 to snap rearward away from engaging position with the threesnug cam 86 into a position for engagement with the two-snug cam 88.

Heightwise adjustment of the bar I18 in its guideway crank I16 will vary the precise stage in the downward feed-length reducing movement of the feed-length controlling arm I09 at which the bar actuates the link I64 to move the slide II6. For convenience, an indicating mark is placed upon the bar I18 and a corresponding series of scale markings are placed along one of the sides of its guideway to facilitate the setting of the bar to cause the slashing knives to operate on every sixth movement of the work when the desired reduction of the length of each feeding movement has been effected by depression of the treadle.

Formed upon the left hand end of the link I04 and considerably below the level of the ear I 80 is an abutment lug I04. When the link I64 is in its lower position for the ear I00 to be engaged by the block I82, the lug I84 will lie below the path of movement of the block I82 and will not, therefore, be engaged by the block. However, when the treadle is allowed to rise to increase the length of the work feeding movements after the insole has been channeled around its toe portion, the lug I00 will move upward into the path of rocking movement of the block I82 and will be thrust toward the left upon the next swing of the bar I10 in that direction. The effect of such movement will be to shift the slide II6 back again into a position of engagement with the three-snug cam 86, whereupon the slashing knives will be operated once for every fourth work feeding movement of the channeling knives.

It is evident that various pairs of cam disks each having a desired number of cam snugs may be used in place of the disks 8B and 88. Since the cam disks rotate at one-twelfth the speed of the main shaft, the number of cam snugs on each of the disks must be an integral factor of I2, 1. e.,

2,8,4 or 6. For example; if one of the two :am disks should be providedwith fourj cam snugs, then the slashing knives when operated by the cam would slash the work once for eYfiIy third feeding movement. Such provision for varying the number of cam snugs and for adjusting the heightwise setting of the barin the rocking crank renders the machine adaptable-tea wide range of conditions in the stages at which the slashing knives become operative when the chahnelirig progresses along the sides of the insole and around the toe thereof. I

As has previously been stated, the cam disks 86 and 88 are mounted for free rotation upon the auxiliary cam shaft 82. These cam disks are arranged to be driven fromthe shaft 82 by means, presently to be described, which is aut matically rendered inoperative when thereis' no work in the machine and the latter is running idly and which also may manually be rendered inoperative when the use of the slashing knives is not desired. To this end, the. shaft 82 is provided with a radial fiange I88 (Fig, 3)' of greater radius than the cam disks and having secured upon it four short rectangular studs I8 8 (see also Figs. 1 and 10) equidistant from each other and extending parallel to the axis of the shaft 82, each stud constituting a driving member. The cam disks, 88 and 88 are securely mounted on a sleeve Hill which is freely rotatable upon the shaft 82. The rear end of said sleeve is provided with a radial flange i 92 of smaller diameter than the cam disks and spaced .irom the flange I86 by a spacing collar I94. This collar I94 and also the flange I92 are ofsmallenough diameter to clear the four driving studs I88 The cam disks 86 and 88, the sleeve member I98, and the spacing collar I94 are secured together in fixed relation by a pin i918 which passes through alined openings in the cam disks and the spacing collar and the flange of the sleeve. Threaded upon the forward end of the sleeve I9lljis a knurled nut I98 which'serves further to secure the cam disks on the sleeve. Portions of the flange I82 and the collar I84 are cut away to receive a pawl 200 which constitutes a driven member arranged to be engaged by, any oneof the driving studs I88. This pawl 208 is in the form'of a bell crank and 'is pivotally mounted by means of a pin 282 upon the' fiangeIQZ, its freedom for such pivotal movement being limited to a small angle by the engagement of the 'two arms of thepawl with adjacent faces in the recess in which the pawl is seated. The auxiliary cam shaft 82 is driven in a clockwise direction as seen from the front of the machine and'one of the arms of the pawl 2 00 extending to the right of the pivot 202 carries a'lug 284 whi'ch is normally thrust outward by a spring-pressed plunger 286 into the vpath of the driving studs I88. The plunger 286 is housedin the flange I92 and operates against the adjacent edge" of the arm of the pawl 288. so long asthe lug 204 is thrust outward by the plunger 288, one of the driving studs I88 will remain in driving engagement with the lug 284 and thus cause thesleeve I90 and the cam disks186 and 88 to rotate with the auxiliary shaft 82. J I i A'second arm 208 of the pawl 200 extends more or less radially outward just bcyond the periphery of the flange I92 and may be engaged "by a slashing-knife cut-out lev'er 2I0 mounted upon a shaft 289 journal'edin suitable bearings in the stationary headdlli Thelever 2H1 isarranged to abut against the left hand edgeof the outer shift t e link 236 longitudinally.

end portion ,of said arm to immediately swing thej pawl 200in a direction to move the'lug 204 inward out of engagerrieht' with the stud I88, thereby disengaging the drive of the cam. disks. Duringcontinued rotation of the shaft 82, the studs I88 pass" idly, over the lug 2 04, and across the other arm of the pawl 28!) and the cut-out lever 2I8 i v c M In order that the pawl zfiiicshall thus stop the rotation of the cani disksl 88'and88' with the slashing knives remaining in their raised "in:- operative positions when the" machine is running d y. an h e slnp, insole be n pp rat d upon, means are provided for enabling,the channel knife presser gage :38 to control theg pawl To this endthegageffll isflprovided with an 1111 warcllyextendingstem ,2I2 Fi'g 6) guided for limited heightwise movement in a 'guidefway 2 I; (Fig. 12) formed in the carrier 2 l3. This carrier 2I3 replaces the channel knifecarrier 6d of machinedisclosed inhetters Patent NQ. l ,023 ,8l 1 and, as has already beenmentioned; it has for n e d init aguideway 49 for th ha'r 48. The carrier 2I 3 supports the channelknif' jaridis mounted on a, slide provided in the swin ging' carrier "4 4 said slide corresponding to the channellkr' i flc de. n r d .36 I in aid .Lcttfirs P tent. Threaded intotheupper end of the' stein 2121s avertical stud 2M ha" g a head 218 ahdaQcol; he adjac eace lar. 2.1 b l w the h of the carrier 2 I w c t ste 21 is guided forheightwise move jhas formed up t ja flange 2 20 which extend "esp: e 2

the head 12 I61 the eollar a lower flange 222 which su ch n a res flange 228 and the uppe iflfa I 222 are spacediar enough ap a. .relative heightwisel m 4 to the extent ofabout'one H a When an insole is fed across th w ich, s cldin lrhe d. sition by a spring in the usual passes under thepres'ser ga age upwa til t e im 218 n ges vthe up e fl ng .220.. a dth ssliglit vertical .m remen re tive t the we .m i t l z d t cause the paw 20 a s Qv jiI O Ope a os on wi h e 'ri ctw its...1 ii l member. .To this end, the upperpor jofthe carrier 44 has apairf of laterally extendingears 224 which carry a pin x 226 "positioned approximately on the level oi the' uppcijface of the flange 2 20, Abell crank 'lever freely mountegl on the pin 226 has a short horizontally extending arm 228'which bears downsilpq the ad 2118'. A. springepressed plungeriiiil iFig l x hou' in the carrier 2 63 thrusts outward againsta lug 232 which extends downward from ,said' bell crank lever andtendsbtherefore, st t gage 38 down. The bell crank'leve ha upwardly extendingarm fi l H d b (I stantially horizontal link 2'36 ,to a short down; a d y ext ndi a k 38 pnit aft 09 above me one .It$h0u h 9 link .2 a se .ep qze a e .th of the pivotalmounti g 48 of the carrier i .aae that, therefore, the rocking move'ments of the carrier 44 about saidaxis willgnot appreciably When the machine is at rest' or s was; the pawl 200 will beheld out'ofengagenientwith t d i i s ud I as. ,b meatt awa: m but the rising of the presser gauge '30, which occurs on insertion of the work in the machine, will rock the cut-out lever in a clockwise direction as seen from the front of the machine and move it out of engagement with the arm 208 of the pawl 1208, thereby releasing the pawl to the action of the spring plunger 206 which moves the pawl into operative relation to the driving studs. The cam disks 86 and 88 thus become coupled to the auxiliary cam shaft 82 and rotate therewith.

A second and similar out-out lever 242 (Fig. 10) is freely mounted on the shaft 289 by the side of the lever 2l0. Extending from the lever 242 is a handle 244 for enabling the operator to engage the lever 242 with the pawl arm 208 to stop the drive of the cams 86 and 88, notwithstanding the fact that the pawl 20!! has been released by the cut-out lever 2H3 on the rising of the presser gage 30.

For more convenient operation of the cut-out lever 242, a crank arm 246 extends from the hub of the handle 244. Pivotally connected to the outer end of the arm 246 is the lower end of a link 248, the upper end of which is connected to the left hand end of a substantially horizontal lever 250 pivotally mounted upon a stationary pin 252. The right hand end of the lever 25!] is pivotally connected to the upper end of a rod 256 the lower end of which is pivotally connected to an arm 258 of a bell crank (see Fig. 11). This bell crank, which is pivotally mounted on a pin 26!] secured in a stationary bracket 262, has a short upwardly extending arm 264 the upper portion of which is in the form of a thumb piece 256 having a smooth fiat surface for convenient operation by the pressure of the operators thumb.

When the operator draws the thumb piece 266 forward and thereby rocks the bell crank arm 258 up, he causes the rod 256 to rock the lever 25!] in a counterclockwise direction and thereby exert a downward thrust on the link 248 to rock the cut-out lever 242 into engagement with the arm 208 of the pawl 200. The operation of the slashing knives is then stopped until the operator presses rearward upon the thumb piece to disengage the cut-out lever 242.

When the rotation of the cams 86 and 88 has been stopped by either of the cut-out levers 210 or 242, these cams will be held against retrograde movement by a pawl 268 (Figs 1 and 10) which is engageable with a notch in the periphery of the flange I92. The pawl 268 extends from a sleeve are which is freely rotatable on a stationary pin mounted in the machine head 40. The pawl 268 is urged toward engaging position by a tension spring 214 attached at one end to the head 40 and at its other end to a crank arm 212 extending from the sleeve 21!].

Having described my invention. what I claim as new and desire to secure by Letters Patent of the United States is:

1. A machine for operating upon soles comprising a knife arranged to make cuts in a sole, at least two mechanisms each of which is constructed and arranged to cause said knife to be operated periodically in timed relation to the operating cycle of the machine at a ratio between the operating cycles of the machine and the operations of said knife which is different from the operating ratio of the other mechanism, and

means for selectively rendering operative either of said mechanisms to cause the knife to be operated at a desired ratio.

2. A machine for operating upon soles comprising a knife arranged to make cuts in a sole, at least two driven cams, mechanism adapted to be controlled by either of said cams for operating said knife, said cams each being constructed and arranged to control said mechanism to cause the operations of said knife to take place at a ratio between the operating cycles of the machine and the operations of the knife which is different from the operating ratio of the other cam, and means for selectively engaging said operating mechanism with either of said cams to cause the knife to be operated at a desired ratio.

3. A channeling machine for operating upon soles comprising a channeling knife, a main shaft, mechanism driven by said main shaft for oscillating said channeling knife to cause it to make cutting and feeding strokes, a secondary shaft geared to the main shaft, a plurality of cams of different characteristics driven by said secondary shaft, a cam follower selectively engageable with said cams, a slashing knife arranged to make cuts in the area operated upon by the channeling knife, mechanism controlled by said cam follower for operating the slashing knife periodically in timed relation to the oscillations of the channeling knife, and means for selectively engaging said cam follower with any one of said cams to cause the slashing knife to be operated periodically, the ratio between the operations of the slashing knife and the oscillations of the channeling knife being dependent upon the cam selected.

4. A machine for operating on soles comprising a knife arranged to make cuts in a sole, a spring acting upon said knife to cause the knife to make a cutting stroke, a cyclic cam mechanism adapted once in each of its cycles to raise the knife against the force of said spring, means independent of said cam mechanism for holding the knife raised against the force of said spring during a plurality of cycles of the cam mechanism, and means operable periodically to release the knife from said holding means after a plurality of cycles of the cam mechanism have taken place and thereby to enable the spring to operate the knife, subject to the control of said cam mechanism.

5. A channeling machine comprising a knife for forming a channel lip on a sole, a support for the sole, a presser gage engageable with the upper surface of the sole and associated with said channeling knife to control the heightwise position of the knife, a knife for cutting slashes in a portion of the sole in which a channel lip is to be formed, means for operating the slashing knife periodically, and means controlled by said presser gage for stopping the operation of said operating means when the sole passes out from under said presser gage.

6. A machine for operating upon soles comprising a support for a sole, a knife for cutting slashes in a portion of the sole in which a channel lip is to be formed, means for operating said slashing knife periodically, means responsive to the presence of a sole on the support for rendering the operating means operative only while there is a sole on the support, and manually actuated means for stopping the operation of said operating means notwithstanding the presence of a sole on the support.

7. A channeling machine comprising a knife for forming a channel lip on a sole, a support for the sole, means for oscillating said knife to cause it to make cutting and feeding strokes, a presser gage engageable with the upper surface of the sole and associated with said channeling knife to control the heightwise position of the knife, a knife for cutting slashes in a portion of the sole in which the channel lip is to be formed, means for operating said slashing knife periodically in timed relation to the cutting and feeding strokes of the channeling knife, means for varying the period of operation of said slashing knife relative to the number of strokes of the channeling knife, and means controlled by said presser gage for rendering the slashing knife operating means inoperative except when the presser gage engages a sole on the work support.

LAWRENCE MAWBEY.

REFERENCES CITED The following references are of record in the file of this patent:

Number Number UNITED STATES PATENTS Name Date Sandmann Mar. 2, 1886 Stewart June 21, 1904 Perry June 25, 1912 Bertrand Aug. 24, 1920 Winkley Oct. 18, 1927 Raiche Mar. 12, 1935 FOREIGN PATENTS Country Date England Feb. 4, 1908

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