US1927954A - Box toe conditioning machine - Google Patents

Description

p 1933- A. R. SCHOENKY 1,927,954

BOX TOE CONDITIONING MACHINE Filed July 51, 1931 a sheets-sheet l a Sheets-Sheet 2 v A. R. SCHOENKY I BOX TOE CONDITIONING MACHINE Filed July 51, 1931 mm: @WK 1 TE J mm 1 N in 8 9w i w... w 8 mmfign in mm f 85% Gm w NW L 5 J. m i .H. ww/ w I} TM... O Q2 x mm aw: mg ww w\ Q3 8 *w ww ww & mm n mu m8 5 u Q .1 .1 .GIH i.

Se t. 26, 1933.

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p 1933- A. R. SCHOENKY BOX TOE CONDITIONING MACHINE Filed July 31, 1931 3 Sheets-Sheet 1 J Y v 1 kiw Patented Sept. 26, 1933 1,927,954 BOX TOE CONDITIONING MACHINE August R Schoenky,

Beverly, Mass, assignor to United Shoe Machinery Corporation, Paterson, N. J.,-a corporation of New Jersey Application July 31, 1931. Serial No. 554,267 9 Claims. (ora -46) This invention relates to a machine for tempering articlesv and is;

conditiom'ng or herein illustrated as embodied in a machine of .1 the general type disclosedin United States Letgranted January 31,

ters Patent No. 1,895,574, 1933, on my application-for conditioning stiffening-inembersoi shoes, such as box-toe blanks, counters and the like.

Such articles commonly consist of a fabric base impregnated with a stiffening substance, such as celluloid, which may berendered limp and pliable by treatment with a softening liquid such, for example, as acetone.- The blank thus repideled temporarily limp and pliable may be assembled with a shoe upper and an insole upon a last and issubjected first to the operation of a pulling-over machine and then to that of a lasting machine, which operations stretch and pull the upper about the last and secure it in position,

the box-toe blank thus being conformed to -the toe portion of the last. After the softening. liquid has evaporated the box toe becomes stiff and resilient. f

The object of the present invention is to produce an improved machine of in ny copending application above mentioned.

In accordance with a feature of the invention, two rolls are provided for advancing the work ipiece one of the-rolls being partially immersed in a liquid in a receptacle and the other roll being outsideof the receptacle, means being provided for transferring the work piece] from the roll, within the receptacle to the roll outside of the receptacle, and a member also being provided for stripping the conditioned work piece from the roll which is outside of the receptacle.

In accordance with another feature a member is provided for stripping the work piece from. a conveyor, the stripper member being constructed and arranged to engage the under surface of the work piece as the work piece is advanced by the conveyor and the stripper member being mounted upon a pivotalsupport which enables the strip per member to tilt away from the conveyor under the weight of the advancing work piece,

thereby raising the trailing end of the work piece from the conveyor and avoiding any, danger of the conveyor in itsmovement fraying vthe trailing end of the work piece.

' The invention further consists in various ieathe type disclosed 7 known as a barometric feed device. Liquidhis reference being had to the accompanying draw; inss, in which Fig. 1 is a'perspective View of a machine em; bodying the invention; 1 r Q Fig. 2 is an elevational view in longitudinalsec-f tion of the machine shown in Fig. 1;; v'

Fig. 3 is a perspective view, showing in detail a. member for wiping surplus liquid from a work' piece; V I

. Figs. 4 and 5 are views in longitudinal elevation?w showing in detail an instrumentality for stri p ping the blank from a conveyor; l 1

The framexof the machine consists offa base. plateflO upon which are mounted a pairofsidef walls 12 connected by a rear wall 141 and by-,,a.' front wall 16. The space between the above-.7, mentioned walls is divided into a forward compartment and a rear compartment by a partition consisting of an upper member 18 and-a lower. member 20. The rear compartment isfopen at 'the top and its upper portion is occupied by'a tank or reservoir 22 for holding, a suppl'yfoi 7 provided with a handle 24 whereby it may re'adily be removed from orreplaced in'the machine. The work-advancing and work-treatingjinrstrumentalities are located within the forward compartment. The softening liquid is contained in a pan 26 disposed in the forward compartment and communicatingthrough a covered'pa's: sageway 28 with a pan 30 disposed in the rear; compartment. In the illustrated machine the pans 26 and30 .and the connecting member in; which is formed the passageway 28 are conven iently integral, and the upper partition inember' l8is suitably-notched to accommodatethe cone nectingmember. The reservoir 22h'as a feed nozzle 32 which extends downwardlyinto' mei rear pan 30 to maintain automatically a constant level of liquid thereinfdetermined by the height of the openings of the nozzle 32 above the fioor of the pan 30, this arrangement being'commonly.,

thus suppliedfrom the reservoir 22 to the for-v ward pan 26,as required. The 'partitionwhich comprises the. members 18 and 20 .functionsto protect the reservoir 22 from any danger of fire" 1 V in case theliquid or vapor in the forward portion of the machine-should'beco me ignited. The liq uid-containing member which comprises the. pans 26 and 30 and the passageway 28issupr ported upon a pair of rods 34 with provision for. i I adjustment forwardly or rearwardly or the ma f 110 chine for a purpose'hereinafter to be explained.

, liquid seal between the forward and rear pans portion 40. of the cover for the passageway 28.

The portion extends below the surface of the liquid in the passageway so as to maintain a respectively of the receptacle so as to prevent the passage of a flash if the vapor in the forward pan should become ignited.

Extending across the forward compartment of the machine and journaled in bearings formed in the side walls 12 is a shaft 42 carrying a feed roll or carrier 44 having pointed projections formed upon its periphery. The roll 44 is built up longitudinally of circular saw bladesand spacing members arranged alternately. The teeth of the saw'blades constitute the abovementioned pointed projections, and the spacing membersare of smaller diameter than the saw blades so as to form grooves between the saw blades. "The spacing members, in the illustrated machine, have smooth circular peripheries which provide smooth bottoms for the grooves between the saw blades. Both the saw blades and the spacing members are annular in form, having relatively large central openings to enable them to be mounted upona sleeve 45 of relatively large diameter. The sleeve 45 is provided at each endwith an internal flange which fits around the shaft 42. At one end the sleeve 45 is provided with an external flange, the opposite end of the sleeve 45 being. externally threaded to accommodate a nut which exerts a clamping pressure through the saw blades and spacing'members against the external flange of the sleeve 45. An

advantage of the annular form of the saw blades and of the spacing members resides in the fact that the saw blades and spacing members engage each other over relatively small areas.

,They have less tendency to spring apart, and require less clamping pressure to holdthem tightly together, than would be the case if the engaging areas were greater. The roll 44 1s partially immersed in the liquid contained in the forward pan 26.

Cooperating with the roll 44 and positioned rearwardly and above the latter is' a presser roll 46 which, in the illustrated machine, is ofmetal and" which is carried upon a shaft 48 journaled in a yoke-shaped frame 50'. The roll 46 is urged toward the feed roll 44 by means of springs 52 interposed between abutments 54 andthe yoke portion of the frame 50. The frame 50 is mounted for pivotal movement upon a rod 58 the ends of which are supported respectively in arms formed on a plate 60 which constitutes a cover plate for the portion of the forward compartment which contains-the presser roll46; An adjusting screw 56 threaded through the cover 60 is pro-- vided for varyingthe pressure of each of the springs 52. If the pressure of the springs 52 is increased sufficiently, the saw teeth of the feed roll 44 will penetrate the work piece to a depth depending upon the amount of the pressure.

The roll44 will thus function as a pricker roll to render the work piecemore' porous. For those types of work piece, however, which are already sufficientlyv porous, the pressure of the springs 52 may be relatively weak, in which case the roll 44 functions merely as a feed roll to advance the -The gate 72 consists of a flat teeth. The forward portion of thecover' plate 60 extends both upwardly and downwardly in the form of a wall 61, the major portion of which is vertical and the lower portion of which approach of the presserroll 46 toward the feed roll 44. v, a

Extending across themachine over the greater. portion of the feed roll 44 is a bracket 64 having work piece by the frictional contact of the saw a portion 66 which extends downwardly and rearwardly and another portion 68 which extends downwardly and forwardly, the bracket 64 being provided with end flanges through which extend cross bars 70 which are mounted in the side walls 12, the cross bars '70 serving thus to support the bracket 64. The downwardly and rearwardly extending portionq66 of the wall 64 is directed toward the bite of the rolls 46 and 44, and it serves as a guide for feeding work pieces through the machine.- 7 ing portion of the wall 61, previously mentioned, assists in directing the work pieces to the, bite'of the rolls, and together with I I tutes a feed chute. A gate 72 normally closes The lower and rearwardly curvthe wall 66 it constithe opening of the feed chute in order to prevent small articles, and particularly tacks-from being accidentally thrown into the feed chute. 1 The conditioning machine is usually operatedinclose proximity to a pulling-over machine, which fre-,

quently ejects tacks in the course of its operation.

The operator occasionally scatters tacks in re-'110 ejected by the pulling-over machine or scattered by the operator should find their way into the interior of the conditioning machine, serious damage would probably be done to the mechanism of the conditioning machine. Furthermore, the resultingsparks would be likely to cause ignition of the vapor within the housing. plate which, at its upper side portions, is] provided withlug s which engage notches 74'provided in a pair of side walls 76. This form of mounting the gate 72 enables it to pivot about the above-mentioned V lugs and to swing back as the work piece is thrust against it. The side walls 76 extend forwardly from the vertical wall 61, being integral with the vertical wall 61 and the cover plate 60. plate. '77 is mounted on the upperedges of the side walls 76 and the vertical wall 61,;extending forwardly of the upper edge of the gate 72.? Extending crosswise of the machine and carried in the lower forward portion of the bracket 64 are a pair of rods 78 upon which are mounted a plurality of stripper fingers 80 which extend into grooves between the saw blades of the feed roll' The partition member 18 is provided'with a forwardly extending flange 82 upon which is mounted one arm of a U-shaped spring plate 84,

the other arm being curved about a-portion of the feed roll 44. A plurality of spring fingers 86 ex A cover v tending into the pan 26 and around the lower portion of the feed roll 44 are also secured upon the flange 82. A rod 88 extends across the forward portion of the pan 26 and affords a pivotal mounting for a Wiper plate 90 which is urged by a spring (not shown) toward the feed roll 44.

At each end of the wiper plate 90 is a shoe 92 extending guideways V upstanding lug 103 means of a pair of springs which bears against a flange (not shown) on the feed roll 44, thus limiting'the approach-of thewiper plate toward the roll and preventing the edge of the wiper plate from riding on-the points of the roll. Extending upwardly'and forwardly plate 94. I The proi from the wiper 90 isa guide vision for forwarder rearward adjustment of the pan 26 by means of therod 36 and eccentrics 38 enables the pressure of the wiper plate 90 toward the roll to be adjusted. v I I Disposed forwardly of the feed roll 44 and at a level somewhat lower than that of the shaft 42 is a shaft 96 extending across the machine and'having its ends journaled respectively in flanges on the forward end plate 16. shaft 96 is a delivery roll tive guideway. 101. A gib 105 is secured to-each end of the bracket 100 to retain its respective'lu'gv 103 within th guideway 101. The bracket 1 00' iswith a lug 106 against which bearsa stop screw 108 which is threaded through a rearprovided wardly. extending lug 110 formed on the member 102 for limiting the approach of thesurface 104 toward the delivery roll 98. tended for factory adjustment to limit the ex- I 0 treme downward movement of the member 102.

A second adjusting screww112 also threaded through the lug 110 and quent adjustments of the downward movement of the member 102 to accommodatework pieces of varying thickness. rounding the stem. of the adjusting screw 112.

A lock-spring 113' s'urprevents the latter from member 102 is at. all times jarring loose; I The posed between plugs 116 adjustably threaded into the bracket 100 and lugs 118 formed on the mem-' her 102. Mounted on the bracket 100 is a tray or shelf 120 for carrying a supply of work pieces. Extending across the machine forwardly of the delivery roll 98 and somewhat above the level v of the shaft 96 is a rod 122 supported by the forward end plate 16. Mounted upon the rod 122 are a plurality of stripper fingers 124-the rear end portions of of the delivery roll 98. The stripper fingers 124 also have forwardly extending function as a grid to support the. work piece after treatment and after delivery by the delivery roll 98. The stripper fingers 124 are pivotally mounted upon the rod 122 and have" under surfaces 128 which cooperate with an upper surface 130 of the forward end platelfi to'provide for a limited tilting movementof the stripper fingers 124. A plurality of other stripper fingers 132 are also mounted upon the rod 122. The stripper fingers 132 extend into the grooves of the delivery roll 98 but no provision is made for tilting movement of the'fi'ngers 132, thesefingers being notched to engage the upper-surface 130 and also the inner surface of the-end plate 16 in Mounted upon 'the' 98 which is similarto the feed rol144, being composed of circular saw vertically The screw 108 is in-' bearing against the lug 1 106 is provided for taking care of the more fre urged downwardly by 114 which are interiwhich extendinto grooves portions 126 which order to hol'd the fingers 132 "securely position I The fingers-132 are not/provided with'anj'fdr? ward extensions; A plurality'of members 134i are also mounted upon the rod -l22 'and are notched about the upper surface, 130 "and the inner surface of the end wall 16, the members 134 extending into such'gro'oves of the delivery roll98 as are not occupied bythe fingers 124 andlBZ. The-purpose of the members 134 is to gather lint which might accumulate upon thepoints "of the" delivery roll 98. -The'stripperfingers 124 are not distributed uniformly along the length of the rod 122 but are omitted at the'c'entralportion of this rod in order to facilitate the grasping of the de. livered work piece by the-operator. The stripper fingers-124 and l32yandthe members 134-are all freely-movablelengthwise along. therod 122-"to enable them to space themselves as determinedby' the grooves of the roll98 with which they register. The conveyingmechanism-comprising the rolls 44' and 98 iadriven by power supplied to-a pulley 136 upon a -shaft138which' is" journaled in a bracket 140 secured to the rearwall'1 4.- A'sh'aft 142 isdriven from the shaft 138 through reduction gearing 144.-

'146through a clutch 148havingfanactuatingrod 150 whichterminate's in a handle'1 5 2. The shaft The slit-1ft 142" drives a shaft 146 through bevel gearing 1 4 drives the feed You,

44f Adjacent to theoppositeend 'ofthe shaft 42 of the-feedroll isag'ear wheel 156 which through intermediate gearing 158- 'drives the delivery roll- 98. It will be noted deliveryroll- 98 are driven inopposite directions,

the'former counterclockwise and the latter in a clockwise direction, as viewed" in Fig. 2. The teeth of the'saw blades which constitute the pointed projections of the feed roll are inclined toward the direction of rotation in order-to enable" them more effectively to-advance the dry work piece by frictional engagement The projections ofthe delivery roll 98, however, are inclined away that the-feed roll 44- and the V from the direction of rotation in order to prevent them from gouging intothenowsoftened-work j piece and to avoid any danger or" fraying'the trail ing end er the work piece after the latter hasbeen delivered upon the stripperfingers 124'.

A drip pan 160 isprovideddnthe lower portion of the rear compartment urine machine, and a drip pan 162 is provided in thelower portion of the forward coinp'artr'nentf The reservoir22 is-so shaped as to avoid interference transmission systemf' I In operation, the Work: pieces are taken up i one byjone from a stack resting on a' shelf 1'20 and are '3 inserted through the fehute formedbetween the;

iiiila hg we re Y Y inclined plate 66 and the lower curved portion of the wall 61; The swingingfiplate '72 readily yields. to permit entry ofjthewcrk piece. edgeof the work piece is pressed against the teeth of the feed roll'44iby the presser .:roll 46-,- The springs 52 may be tightened by the adjust; ing screws 56 to cause more orless penetration of the workpiece, if greater porosity of the work, piece is desirable to enable it to take-up conditioning liquid more readily, If the workpiece-is already sufficiently porous. thepressure ofthe springs 52 may be adjustedme'rely to cause .fr ictional driving engagement betw'e'enfthe roll teeth and theiwork, piece without penetration. "The spring plate 84 and the springffinge'rs 86 serve to The leading maintain the work piece in engagement with the is not impaled:

i which may adhere to the work it is. stripped from the feed roll 44 by the strip Der fingers 80. "The. under. surfaces of the strip: p fine rs',t s th r-.W h the pw d y n forwardly extending guide member 94 which is careql pon t e w per 9. i ec s h work pie e to the'delivery roll 98, The leading end of the work piece is advanced'iby the rotation of the delivery roll underneaththe curved under surface, 104 of the member 102. The surface 104 is SO. shaped that at the locality of approach of the work piece it is spaced a relatively greater distance from the delivery roll to avoid contact with the approache ing work piece, the work-engaging surface gradually approaching the roll in the direction of adn e-c the Wor ie e s t the Wor ie e entersgradually into contactwiththe under surface of the member 102 and enables this surface to remove surplus liquid from the work piece without scraping any softened solid material from the surface of the work piece. The member 102 serves also to maintain the Work piece in feeding engagement with the delivery roll, and it may,

if desired, be utilized, by adjustment of the stop screw-1l2 and of the spring abutments 116, to press thefwork piece against the teeth of the delivery roll with sufficient force to effect partial penetration. In that case some of the condi-. tioning liquid which adheres in the form of a very thin film to the work piece andv to the teeth of the delivery roll will be introduced into the interior. of; the work piece. As the work piece is further advanced bythe delivery roll, the stripper fingers 124 engage the under surface of the work piece and as the work piece advances forward r beyond the supp rting rod 122 the stripper fingers tiltsoas to raise the trailing end of the work piece away from the delivery roll so that the trailin'g edge of the work piece is out of contact with the pointed projections.

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

\ 1.-A.c0ndi tioning machine having, in combination, means for subjecting a work piece to the action. of a softening medium and a driven rollconstructed and arranged to deliver the treated work piece from said subjecting means, said delivery roll having a plurality of pointed work engaging-projections inclined away from the direction offrotation of said delivery roll to avoid damaging the softened work piece.

2. A conditioning machine having, in combi-' nation, means for subjecting a work piece to the action of a softening liquid, a driven roll con- *structed and arranged todeliver the treated work piece from said subjeeting means, said delivery roll having aplurality'of pointed work-engaging projectionsinclined away from the direction of rotation of said delivery roll to avoid damaging the softened work piece, and a member constructed and arranged to press against thework' piece as the work piece is advanced by said delivery roll to' remove surplus softening liquid 34A conditioning machine having, in combia conditioning liquid,

nation, a receptacle for a .driven feed 'roll' partially immersed in the liquid in said1receptacle, said feed roll having a plurality of work-engaging projections inclined in thedirection in which said feed roll is driven,

. means for holding a work piece against-saidroll whereby said roll in its rotation carries the work piece through the liquid in said receptacle, a; qr venqe i y r0 O t e of ai rec ac e means for transferringthe work piece from the e d 7011 to, the delivery roll.

= Aconditioning machine having, in combina tion, a receptacle for a conditioning liquid,1a driven roll partially immersed in the liquid in said receptacle, a plurality of spring fingers curved about that portion of the, roll whichis immersed inthe liquid forholding against the roll in, driving engagement therewith, a driven roll outside of the receptacle, means for transferring the work piece from the firstmentioned roll to the second-mentioned roll, and

a member constructed and arranged to strip the periphery of the secondwork piece from the mentioned roll.

5. A conditioning machine having, in combination, a driven roll having pointedxprojections for engaging one, side of a work piece toadvance the work piece, means for subjecting the work pieceadvancedsby said roll tothe action of a conditioning medium, a second rollhaving pointed projections for advancing the work piece,'and means for transferring the work piece from the first mentioned roll to, the second-mentioned roll with the opposite side of the work piece inv 6, In a conditioning machine, meansfor subjecting a work piece to the actionof a conditioning liquid, a roll for advancing the work piece.

after the work piece-has been subjected to the actionofthe conditioning'liquid, and a member constructed" and arranged to press against the work piece as the work piece is advanced by said roll to. remove surplus. conditioning liquid which may adhere to the work piece, said member having a smooth concave work-engaging surface which at the locality of approach of the work piece is spaced a relatively greater distancefrom:

the roll than the major portion of the work-engaging surface to avoid contact with the approaching work piece, said work-engaging surface gradually approaching the roll in the direction of advance of the work' piece, whereby the. work piece enters gradually into contact with the surface of saidmember and enables said member .to remove surplus liquid without scraping any softened solid material from the surface, of the work piece.

7. In a conditioning machine, a conveyor for a a work piece work-piece, a stripper constructed and arranged I to engage the under surface of the work piece as the work piece is advanced by said conveyor, thereby stripping the Work piece from said conveyor, and a pivotal support for said stripperconstructed and arranged to enable said stripper to tilt away from said conveyor under the weight of the advancing work piece.

8. A conditioning machine having,-in combination, mechanism for conditioning a work piece, a feed chute constructed and arranged to direct the work piece to said conditioning mechanism, and a gate closing the: entrance to said feed chute to, prevent the accidental introduction of undesirable objects such as tacks to said conditioning mechanism, said gate being pivotally sus" pended for free swinging movement to enable it to, be opened by the insertion of a work piece.

9. A machine for treating shoe stiffeners made of fabric impregnated with a stiffening substitute having, in combination, a receptacle for liquid, a member for receiving the stiffeners and immersing them in the liquid, a downwardly extending chute having its delivery end adjacent to said immersing member, a substantially horizontal, stiffener-supporting plate terminating at,

its'rear edge'adjacent to. the mouth of the chute,

and a normally vertical gate in the form of a thin plate suspended for 'freeswinging movement about a horizontal axis located above the supporting plate in position to close the mouth of the chute.

. V I AUGUST R. SCHOENKY.

CERTIFICATE or CORRECTION.

Patent No. 1,927,954. September 26, 1933.

AUGUST R. sCHoENKY.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 4, after line 75, claim 3, insert the words said delivery roll having a plurality of work-engaging projections inclined away from the direction in whieh the delivery roll is drivin en to avoid damaging the softened work piece, and; and that the said Letters Patent should be read with this correction therein that the same may conform to the record of the case in the Patent Gifice.

Signed and sealed this 21st day of November, A. D. 1933.

F. M. Hopkins (Seal) Acting Commissioner of Patents.

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