US2465417A - Shoe bottom filling machine - Google Patents

Description

March 29, 1949.

c. M. B AGSHAW ET AL SHOE BOTTOM FILLING MACHINE 10'Sheets-Sheet 1 iled May 9, 1-947 lllllllllll In ven zors Charles MBayshal/v Frank C Choice John W Prazff B I [hem Aitorrze q 7 I G 0 Jw" 3 o O Q v 0 A 0 V Ki 2 l 2 1 o o /...u\ o 6 fimma a. c 3 I 2 March 29, 1949. c. M. BAGSHAW ET AL 2,465,417

SHOE BOTTOM FILLING MACHINE Filed May 9, 1947 Y 10 Sheets-Sheet 2 Pg. 2 37 I A 7 [r1 U (9 n to P5 671 or! es MBc ha Hank C Choice Jo/zrz WPraZL B zhezf A Horney C. M. BAGSHAW ET AL SHOE BOTTOM FILLING MACHINE March 29, 1949.

10 Sheets-Sheet 5 Filed May 9, 1947 lnuen 20 rs Char/es MBagShaw Frank C C/zaice John W Praii' By zhez rAzzorney March 29, 1949. c. M. BAGSHAW ET AL 2,465,417

SHOE BOTTOM FILLING MACHINE l0 Sheets-Sheet 4 Filed May 9, 1947 OOOOOOO I ..J I

[nu e 72250215 Char/es MBajShm/v Frank C. (ho/ice John W Praff March 29, 1949. c. M. BAGSHAW ETAL 2,465,417

SHOE BOTTOM FILLING MACHINE l0 Sheets-Sheet 5 Filed May 9, 1947 ln'u en to P5 Charles MBa gs/zaw ihez'i' Azfiorney Frank C Choice John W Prafi I'll 4 oooo z oo o 000 c. M. BAGSHAW ETAL 2,

SHOE BOTTOM FILLING MACHINE March 29, 1949.

' Filed May 9, 1947 10 Sheets-Sheet 6 1: kEIlEi PEHEFliLL Inventors I Charles MBa shaw Frank C Choice John W Pratt By zhezr' Afforrzey iii March 29, 1949. c. M. BAGSHAW ET AL 1 SHOE BOTTOM FILLING MACHINE Filed May 9, 1947 l0 Sheets-Sheet 7 Inventors I Charles MBayshaw Frank C Choice John W Pra it Byfizezr' Aziorne y March 29, 1949. c. M. BAESSHAW E 'iAL 2,465,417

SHOE BOT'I OM FILLING MACHINE Filed May 9, 1947 v 10 Sheets-Sheet 8 Invenzo r's. Charles M Bags/'zaw Frank Choice John W Prah March 29, 1949. c, s w ET AL 2,465,417

SHOE BOTTOM FILLING MACHINE Filed May 9, 1947 10 Sheets-Sheet 9 Inventors Charles MBajShczl/v Frank C. Choice John w Pra-fzf By fhez r Afton 6y March 29, 1949. c. M. BAGSHAW ETAL SHOE BOTTOM FILLING MACHINE 1O Sheets-Sheet 10 Filed May 9, 1947 Inventors CharlesMfiayslzaw Frank C Choice Patented Mar. 29, 1%9

STATES PATENT 'EFICE SEOE BQTTOM FILLING MACHINE Jersey filpolication May 9, 1947, Serial No. 746;.926 In Great Britain .lnne 6; 1946 45 Claims.

This invention relates to improvements inmachines for filling shoe bottom cavities.

In most shoe manufacturin processes after the upper has been lasted over an insole there is -a cavityhoundcdby the inner edge of the overlastcd upper. In order that cutsole, when applied to the bottom of a shoe, may fit flush against the shoe 'Jbottom, zit is usual practice .to

fill the cavity. with :bott m filling material com- .poscdoi a mixture of granulated cork and a bitumin or resin binder which is plat. Toy

heat and which hardens when cooled. In United States Letters April '14 19%2, on application of W. N. Bray et a1.,

Patent No. 2,279,44 granted there is discloseda simple type of machine which constitutes an appreciable advance over machines previously made for this purpose but this machine is operated entirely by manual effort so that the output is limited to the strength: and endurance of the operator.

Among the various objects of the present invention are :the provision of a novel convenient machine for applying filling material to the cavities of shoes of varying sizes and for causing the'material to spread, to the desired depth, throughout the whole of the area of each cavitywithoutthe exercise of substantial man .ual' effort :in object "is to provide a novel and convenient *power operated arranger quantityof filling material may be taken from a so doing. Another closely related nt w. ereby a suitable supply :mass thereof, applied to a shoe bottom cavity andlcansed to spread thereover in a single operation.

A further one :01 the various objects of the invention is to provide a power operated machine which shallhe capable of app-lying filling material to a shoe bottom cavity at a low rate Well suited to facilitate its flow into all portions of the-cavity and which in spite of such .fact, shall shoe bottom around the cavity to be filled to hold the :material within the cavity while an :extrudingpressureis being exerted, a container iii for a supply mass of filling-materiaL-end reciprccatory feeding for transferring thesmateriali, from :the supply to the cavity in which=an adequate amount of material inexcess of that required to fzll the cavity of theshoeis separated from the mass within the *supplycontain'er for use by the feedingmeans during each operation of the machine in Ifillinga shoepthus preventing irregularities in the distribution-cr wling material-within the shoe cavity and promoting conformity inthe fifilling operation. The illustrated form of this feature consists of a:cylinder communicating. with the bottom engaging .memher, with which the separating device acooperates. Asxan effective construction: for: this :purpose. the cylinderreceives awplunger to provide the extruding pressure and the-material. separated lhy :saidudevice is disposed .in the path of the plunger to enable it to be carried :into the ,cylindercduring the compressing stroke thereof. In .the preferred embodiment of thisffeature; the separating device comprises a sleeve arranged iin alinement with the cylinder entered by 1 the phmgerrandas it enters the cylinder the':-amount of material contained in the sleeve-is carried "into the cylinder. An advantageous construction embodyingtthc separating'zsleeve, as will be-idescribed. hereinafter, has the :plunger;,.ar11anged to act withinthe supply container for the filling material and. the sleeve surrounding the. plunger :is in frictional engagement therewithi for movement towardthe cylinder opening during the compressingstroke of the plunger. .To:insu.re positioning an adequate bulk of the materialin :the'supply container withinithe path of thecompressing plunger during the ieedingstroke thereof, according to' theseifeatures of the invention, the, container formthesupply :is equipped-wi-thaagitating means so that during the retracting stroke of the plungerfiromthe-cylinder thevmatexrial: in the supply mass-Will quickly fill the space vacated :hy .the plunger .zill preparation for .a new means forchanging the speed'at -which the plunger reciprocates to reduce the time in which the machine may complete its cycle of operation and an effective and inexpensive construction for a shoe engaging matrix capable of use with a wide range of sizes and shapes of shoes, as hereinafter described and claimed which together with the advantages obtained thereby will be readily apparent from the following detailed specification, taken in connection with the accompanying drawings illustrating two embodiments thereof, in which Fig. 1 is a view in front elevation of a machine embodying the features of the present invention;

Fig. 2 is a view in side elevation partly broken away and in section looking from the right side of the machine illustrated in Fig. 1;

Fig. 2a is a detail view on a somewhat enlarged scale of the clamp pad locking pawls and rack employed in the machine;

Fig. 3 is a view in vertical section on an enlarged scale taken through the matrix box, the filling valve and extruding cylinder of the machine illustrating the operation on a shoe;

Fig. 4 is a view in front elevation partly broken away and in section of the matrix box showing its relation to a shoe being filled;

Fig, 5 is an enlarged scale sectional view in front elevation of the agitating drum and supporting means;

Fig. 6 is a. view in side elevation of a portion of the driving mechanism and controls for the machine;

Fig. '1 is a view in front elevation on an enlarged scale of the mechanism shown in Fig. 6;

Fig. 8 is a sectional detail view of a roll clutch employed in the driving mechanism illustrated on a further enlarged scale;

Fig. 9 is a section of the roll clutch taken along the line IX-IX of Fig. 8;

Fig. 10 is a detail perspective view of the filling plunger and pickup sleeve employed in the machine;

Fig. 11 is a sectional detail view of an overload clutch employed for driving the agitating drum of the machine;

Fig. 12 is a detail perspective View, looking from below the matrix box with the shoe engaging diaphragm removed therefrom;

Fig. 13 is a View in front elevation of the matrix box with the shoe engaging diaphragm in place;

Fig. 14 is a sectional view of a portion of the matrix box illustrating the manner in which the shoe engaging diaphragm is secured in place;

Fig. 15 is a detail perspective view of the shoe engaging diaphragm looking toward the front edge and from the underside;

Fig. 16 is a detail perspective View of the driving and cam disks on the crank shaft of the machine; and

Fig. 1'7 is a view in right-hand side elevation of a modified mechanism for actuating the control valve and for imparting a variable stroke to the extruding plunger.

The illustrative machine consists of a frame having a vertical column I supporting a head casting 3 at the upper end thereof. At the forward side of the head casting, and substantially centrally thereof, is positioned a shoe-bottomengaging matrix in the form of a box 5 presenting an outline which, as seen in plan corresponds to the outline of the forepart of an exceptionally wide shoe, the matrix being adapted to fit closely against the top edge of the insole lip of a welted shoe 2 around the toe and along the sides of the shoe to a position at the heel side of the ball-line. The construction of the matrix will be described more fully hereinafter and in general the insole-lip-engaging portion thereof comprises a thin flexible metal diaphragm I (see Figs. 3, 4, 13 and 15), of sufiicient resilience and supported in such a manner, as will allow it to accommodate itself to the varying curvatures presented by the top edges of insole lips on different sizes and styles of shoes thrust against it. The diaphragm thus forms a closure wall for the cavity provided in the central part of the shoe bottom by the upstanding insole lip which runs around the margin of the shoe bottom to hold filling material extruded into the cavity between the outer face of the insole and the underface of the diaphragm, which cavity is substantially equal in depth to the height of the insole lip. Where, however, the heel end of the diaphragm extends across the space between the opposite side portions of the insole lip in the waist or shank of the shoe, free access between the cavity in the shoe bottom and the atmosphere is provided.

The diaphragm is shown in Figs, 3 and 15 and forms the lower wall of a shallow metal box 9 corresponding in shape to the diaphragm and fixedly mounted in the machine so as to lie approximately in a horizontal plane with its toe end pointing away from the operator and in a position conveniently accessible to him. Near its toe portion, the upper wall of the shallow box has a short vertical tube H (Fig. 14) threaded into it and a head on the lower end of this tube overlaps the flexible diaphragm and clamps the :7 central portion thereof against a metal backing plate l3 lying between it and the upper wall of the matrix box. The bore in the tube l l provides a means of applying bottom filling material to the central ortion of the cavity in a shoe bottom T from above the matrix box in a manner more fully described hereinafter.

In order to allow bottom filling material to reach the cavity in the shoe bottom from a source of supply, the tube l is arranged to communicate with a duct i5 (Fig. 3) extending horizontally from the upper end of the tube and communicating with the forward end of a horizontal cylinder ii an inch and an eighth in diameter and four and a half inches in length. For feeding bottom filling material into the cylinder and extruding it under pressure into the shoe cavity through the matrix box, the machine is provided with a power reciprocated plunger l9 which lies in alinement with the cylinder and carries with it in a single stroke more than suflicient material to fill a shoe bottom cavity. The plunger in its extreme rearward position provides a gap of approximately five and a half inches between the open end of the cylinder and the plunger (see Fig. 2). In so arranging the plunger and cylinder the plunger, as it advances toward the cylinder, carries with it a sufiicient amount of bottom filling material.

With a view to ensuring that an adequate bulk of filling material will be positioned in the path of the plunger before the latter enters the cylinder, the supply of material is agitated within a rotary supply drum 2! located behind the cylinder and the plunger moves across inside the drum near the lowermost portion thereof. The drum is rotated in a counterclockwise direction as seen from the front of the machine, about a horizontal axis and comprises a rim twelve and a half inches in diameter and seven inches in width supported on step surfaces 23 (Figs. 2 and 11) on area-417 theiouter edges of a pair of fixed end plates 25 and .2'l,.constituting end walls for the drum. The forward end plate 25 has an opening for the plunger in .line with the cylinder and the rearward end plate or wall 27 has a corresponding opening. The plunger is thus able to pass completely across the drum before entering the cylinder. The rear wall El of the drum also has a second opening 29 formed in its upper portion, through which bottom filling may flow downwardly into the supply drum from a hop-per hereinafter described.

With a view to assisting the agitating action produced by rotation of the drum 2| to reduce the filling material to a consistent fluent state and to ensure that the vacancy made in the material bythe advance of the plunger across the drum will be filled with other material of the mass as the plunger is withdrawn rearwardly, a battle composed of a curved sh-:::et metal plate 3| (see Fig. 5) extends across the drum and is secured betwcn the stationary walls 25 and El. This baille plate has a curved portion extending upwardly along the interior of the drum from a position to the right of the cylinder leaving a gap of about half an inch between it and the interior surface of the drum 2!. From the upper end of the baffle portion, the plate is turned downwardly again on a curvature which brings its lower end above the opening of the cylinder I? and from this lower end the plate is bent to the right to join the lower end of the upwardly extending portion. The lower portion of the baffle plate thus provides a pocket which is V- shaped. Thus rotation of the drum carries the filling material into the wider end of the pocket and crowds it into the vacancy in the path of the plunger, a surplus amount of material being caused continually to emerge from the apex of the pocket, and around the upwardly extending portion of the plate. When the material reaches the upper end of the plate, it falls and is deliv ered in front of the open mouth of the cylinder. The vacancy left by the plunger therefore is rapidly filled after the plunger is retracted from the cylinder ll. Thus assurance is afforded that sufficient material will be available in front of the plunger when it makes its next advancing movement.

.lviechanisrn for actuating the plunger into and out of the cylinder El and for rotating the drum includes a horizontal main driving shaft 33 (see Figs. 2 and 6) supported in the machine frame below the head casting 3. The main shaft has a friction disc 35 rotatably mounted on it which is engaged by a belt 36 driven from an electric motor. A second friction disc 37 is mounted to rotate with the rearward end of the main shaft but is slidable along the shaft into engagement with-the driving disc 35 to rotate the shaft at high speed. A sprocket wheel 38 (see Figs. 6 and '8) is driven by gearing hereinafter described from the friction disc 35 so as to rotate with it at a lower speed and a chain ll passing upwardly around this sprocket wheel runs over a larger sprocket wheel 33 (Fi 5) rotatably mounted on the rear end of a shaft 65 beneath the drum. The sprocket 23 has a friction face ll (see Fig. 11) on it and is slid-ably mounted on the hub of a friction disc lli keyed to the shaft. The sprocket 43 is urged yieldingly into engagement with the friction disc and provides a friction drive for the shaft which will allow the latter to remain sta- .tionary if excessive resistance is experienced. The shaftll-b has a small pinion 5!. secured to it mounted on a fixed pin ll.

6 which meshes with rack :teeth153 formed around the periphery of the drum 2 l and, by this means, the is maintained in constant rotationsas long as the electric motor is in operation. To support the drum additionally to that afforded by the end walls and 2? on which it rests, a pair of horizontally extending rods (Figs. 1 and 5) are fixed in the machine frame below the left and right of the drum at either side, looking at the machine from the front, and each rod has rotatable on it a pinion 51 engaging the rack teeth 53 on the drum.

The main shaft 33 has a worm 59 on its rear end which meshes with worm teeth on the periphery of one of a pair of spaced discs 63 mounted on spaced coaxial portions of a crank shaft 5% above the main shaft, one of which portions forms the wheel for the worm 53. The discs 63, and therefore the two portions of the shaft, are connected fcrrotatiiiin together by a crank pin 55 (Fi 6) carrying the lower end of apitman link El, the upper end of which is pivotally connected to one arm of plunger operating members comprising a bell crank 68 (Fig. 2) pivotally The bell crank lever 69 has an upwardly extending arm which through a link 13 is pivotally connected. to the rear end of the plunger l9.

To ensure that the plunger shall carry an adequate amount of filling material in excess of that required to fill the bottom cavity of the largest shoe upon which the machine is intended to operate, according to an important feature .of the present invention, the plunger has a pickup sleeve 15 for collecting filling material before it as advances across the drum toward the cylinder, and for separating automatically the material collected from the mass in the drum. This pick-up sleeve comprises a thin metal tube of an internal diameter to lit the plunger inside the drum, and its rearward portion is split (see Fig. 1G) to provide a plurality of resilient fingers by which the sleeve is held frictionally on the plunger. The arrangement is such that, when the plunger occupies its most rearward position, its forward end will be covered by the sleeve and the rear edge of the sleeve will be in contact with the rear wall Ell of the drum in alinernent with the opening into the cylinder ll. Ample space is therefore provided between the forward end of the sleeve and the forward wall 25 of the drum for filling material to collect as it is carried forward by the rotation of the drum. On advancing movement of the plunger across the drum, the sleeve forces its way through the mass of filling material and separates from the mass in the container an amount in excess of that required to fill the cavity in the bottom of a shoe of the largest size. During continued movement of the plunger, toward the cylinder H as the forward edge of the sleeve l5 engages the rear surface of the forward wall 25 of the drum at the opening of the cylinder, the sleeve is stopped but the plunger continues to advance, moving through the sleeve to discharge the filling material picked up by the latter into the cylinder.

To prevent the plunger from unduly compressing the filling material and to enable the material to be extruded through the matrix box 5 into the shoe bottom cavity at a rate which will produce suiilcient pressure in the material so that it will find its way readily into all portions of the cavity, it is desirable in carrying out the objects of the invention, to cause the plunger to advance relatively slowly during the extruding action. It

is also desirable that the other movements of the plunger which precede and follow the extruding action shall take place at a faster speed in order to reduce the time taken by the machine in completing a full cycle of operations. It is further desirable to have the shoe held more closely against the matrix box While the extruding action is in progress than is necessary at other times. For these reasons particularly, the illustrative machine is provided with two-speed power driven mechanism operating from the main shaft and shoe supporting means of a kind to be described.

The power driving mechanism consists of the friction disc 35 and a small pinion 'I'I (see Fig. 6) formed integrally therewith. This pinion meshes with a large integral gear I9 which is connected to a pinion 3i rotatable on a fixed rod 83 below the main shaft, engaging a final gear 85 (Fig. 8) also rotatable on the main shaft. The gear 85 has pinned to it the driving member 81 of a roller clutch (see Figs. 8 and 9) encircling the forward end of the main shaft and providing a means whereby the main shaft 33 may be rotated at one tenth the speed of the friction disc on the shaft. All the gearing just referred to and the drum revolve continuously as long as the electric motor is in operation without rotating the main shaft, and consequently no movement of the plunger takes place from its inoperative rearward position until the main shaft becomes clutched to the friction driving disc 35.

Clutching of the friction driving disc 35 to the main shaft takes place (a) at times through a direct connection from the friction disc to the main shaft 33 and (b) at other times through the reduction gearing and the roller clutch just referred to. The initial clutching of the disc 35 to the main shaft is effected through actuation by the operator of the shoe supporting means while clamping a shoe. Secured in fixed portions of the head casting 3 just beyond the opposite sides of the matrix box is a transversely extending horizontal rod 89 (Fig. 1) Slidably mounted on the rod for movement toward and away from each other are a pair of small brackets 9I. Each of these brackets has a rubber shoe clamping pad 93 seated in a pocket formed at its upper end. As seen from the front of the machine, these pads present inclined inner faces which act, when the brackets 9I are moved inwardly along the rod 89 to press a shoe upwardly against the matrix box. The brackets 9i extend downwardly below their supporting rod 89 and their lower ends are slotted to embrace fixed pins 95 extending parallel to the supporting rod 83 thus preventing the brackets from rotating about that rod without restricting their ability to slide.

For enabling the pads on the brackets 9| to be moved against and away from a shoe for removal from the machine, each bracket has pivoted to its outer side a laterally extending link 91 (Fig, 1). These links are also pivoted to the upper ends of a pair of curved levers 99 pivoted below said links on fixed pins IE5. The levers turn inwardly, below the pins I85 to an approximately horizontal position directly below the matrix board and are there connected to the upper ends of a pair of depending links ml. The lower ends of these links are connected to the opposite ends of a short horizontal link IDS which is pivoted at its mid portion on the upper end of a vertically movable bar I65. Vertical movement of this bar will therefore cause the rubber pads to move toward or away from shoe clamping position. Vertical movement of the bar is effected by a treadle rod Ifll the upper end of which is pivotally connected to the mid-point of a lever I09 (see Figs. 1 and 2) which is pivoted at I I0 near its forward end, to the lower end of the bar I05 and is upheld at its rearward portion by a relatively strong spring I I I. The rearward end of the lever IE9 is connected to a member of a clutch control, to be described, the arrangement being such that depression of a treadle I08 connected to the lower end of the treadle rod I01 first causes the shoe clamping pads 93 to move against a shoe and then, when firm contact with the shoe is obtained to resist further clamping movement, The lever IE9 then swings downwardly about its pivot IIB to actuate the clutch control member and start the machine.

The main shaft is arranged to be driven either by direct drive from the friction disc 35 or through a roller clutch and means are provided, in the illustrative machine, for determining which of these driving devices is to be effective at a particular time. To urge the sliding disc 3'! forwardly into driven engagement with the driving disc 35 a spring H5 at the rearward end of the main shaft 33 (Fig. 6) thrusts forwardly on a rod III in the main shaft, which rod engages a pin II9 fast in the hub of the sliding disc 31 and passes through a slot in the main shaft. The

disc 31 is, however, held inoperative when the machine is at rest by means of a second sliding rod I2I in the main shaft at its front end abutting the pin I I9 in the disc. The sliding disc and pin therefore lie between adjacent ends of a pair of coaxial rods which slide forwardly and rearwardly to bring about engagement or disengagement of the driven disc with the driving disc.

The roller clutch is situated at the forward end of the main shaft 33 (see Figs. 6, 8 and 9) and is of a conventional type. It comprises a driven member I23 rigidly secured to the shaft and provided with a series of peripheral wedge-shaped recesses I24 formed around it to receive rollers I25. These rollers are controlled by a cage I2! surrounding the driven member I23 and having slots within which the rollers are housed. The cage is formed with a rim having an abutment I28 arranged to be engaged by the control member, indicated at I29. Closely enclosing the rollers is a cylindrical driving member 81 so arranged that when the control member I29 is withdrawn from the abutment on the rim of the cage, the cage is rotated by springs I3! to move the rollers along the wedge-shaped recesses in the member I23 forcing them against the inner face of the driving member, thus causing the driven member and the main shaft to rotate. When the roller clutch is to be disengaged, the control member re-engages the abutment on the cage. When the control member engages the abutment on the cage, further rotation of the cage is prevented, rendering the clutch inoperative.

In order to cause the friction and roller clutches to become operative at the desired times, the illustrative machine has mounted above the front end of the shaft 33 a friction clutch controlling lever I33 (Figs. 6 and 7) which actuates the coaxial rod I2I. The lever I33 is pivotally mounted on a fixed pin I35 above the rod and the upper end of the lever is bifurcated and is actuated when the treadle IIIB is depressed. On the upper end of the lever I33 is pivoted a bell crank lever I31 (Fig. 6) arranged, on rocking movemovement of the control member I29 for the roller clutch away from the abutment on the cage so that the roller clutch takes up the drive and also simultaneously to cause the lever I33 supporting it to rock. in a clockwise direction. The spring II behind the sliding disc 31 then moves the latter into operative engagement with the driving disc 35.

Referring to Figs. 6 to 9, inclusive, the control member I29 for the roller clutch is slidably mounted in a vertically movable slide I39 located above the rim of the cage member I 21. The slide I39 is normally urged upwardly away from the cage I21 by a pair of spring pressed plungers II (Fig. 7). The slide houses within its lower end the control member I29 having a head urged downwardly by a spring I43 encircling its stem, a nut Hi5 pinned to the stem engaging an internal shoulder within the slide I39 for limiting the downward movement of the control member.

Pivoted to swing above the slide I39 is a depending latch-link I51 (Fig. 6) which at its lower end is provided with a shoulder engaging a cooperating shoulder on a horizontal cross bar attached to the slide to hold the latter in a lowered position with the control member I29 lying against the abutment I28 of the cage when the machine is at rest. The latch-link M1 is pivoted at its upper end to a lever I59 operated by engagement with a double-armed cam lever I actuated by a cam I5I secured to one of the discs 63. on the crank shaft 6|. When the latch-link I51 is moved and held in a downward position by the lever M9 the roller clutch is held inoperative and the machine is maintained at rest.

To withdraw the shoulder on the latch-link I 41 from the above the cross bar I63 on the slide I39 which controls the roller clutch, the rear end of the treadle actuated lever I09 has connected to it through a vertical link I I3, a forwardly extending arm of bell crank lever I31. An upwardly extending arm of the bell crank lever I31 has pivoted to it midway of its length a horizontal latch-link controlling lever I53. This lever has a notch formed in the upper edge at its rearward end and between its forward end and the forward arm of the lever I31 is stretched a spring I55. The spring I55 urges the notched end of the latch-link controlling lever I53 against a pin I56 projecting laterally from the lower end of the latch-link M1. When the rear end of the treadle actuated lever I09 is depressed after the shoe clamping pads 93 have closed upon a shoe, the bell-crank lever I31 will be rocked sufficiently in a counter-clockwise direction, as viewed in Fig. 6, to disengage the latch-link I51 from the cross bar on the slide. I33. The slide I39 thereupon is released and rises under the action of its springpressed plungers I iI a short distance until a fixed pin I 51 in the frame (Fig. 9) meets the lower end of a vertical slot I59 in the slide. The cage of the roller clutch isthus released to the action of its springs I3I to cause the main shaft to be rotated by the low speed gear. When it is desirable for the machine to run at a relatively high speed, for instance at R. P. M., through a direct drive from the driving friction disc 31, upward movement of the slide V39 causes the disc 5? to be coupled directly to said shaft at substantially the same time as roller clutch becomes operative-the roller clutch then serving as an overrunning clutch.

In order .to'cause. the friction disc 31 to drive 33, the upper'cnd of the clutch controlling lever 533 carries on the same pivot with the roller clutch operating bell crank lever I31 a three-arm lever ISI (Fig. 6). One arm of this three-arm lever I5! extends rearwardly and carries a roll I52 projecting beneath the cross bar M33 on the clutch controlling slide I39. This roll remains constantly in engagement with a vertical guiding face 554 on a fixed part of the ma-- ment, as the slide 135 moves upwardly the rollv follows it. tracking meanwhile along the vertical face I al behind it. This action produces an angular movement in the three-arm lever I6! to;

allow the upper end or the friction clutch controlling lever 533 to move rearwardly somewhat under the force of the spring I55. end of the lever i335 therefore moves forwardly and the spring I i5 inmediately urges the disc.

31 the driving disc 35, starting the main shaft 33 at high speed. The plunger I9 and: pick-up sleeve 15 therefore move forwardly across the drum relatively quickly. The drive of the". is transferred to the slowly moving roller clutch when the pick-up sleeve 15 contacts.

main shaft the cylinder opening in the forward Wall of the drum 2! before the plunger I 5 starts to'discharge thefilling material from the sleeve into the cylinder Ill and thence into the matrix.

To provide more positive support for the shoe against displacement from the matrix box when the plunger I9 starts to force material fromthe cylinder I1, the link I89 is pivotally connected to a depending arm of a lever I'II (Fig. 6) actuated in part by a cam I15 secured to one of the discs on the crank shaft 51'. I58 formed thereon which engage lever Ill and also rock this lever at certaintimes in the operation of the machine.

pivoted on a pin- Eli fast in the machine frame.

The upper end of toggle link H3 is pivoted toa I15, the two occupying a' second toggle link broken relation when the machine is at rest, as

-' shown in Fig. 2. The upper end of the link H5 is pivoted to the rear end of a pawl-carrying lever ill? fulcrumed on a fixed pivot pin I18.

The forward end of the lever I11 carries a pin I on which a pair of substantially vertical pawls i19 are mounted one beside the other.

pawls h-.ve a pair of staggered teeth (Fig. 2d)

at the forward side of their lower ends, below" their pivot, have long upwardly extending tails. A vertical rack I5! is secured to the rear side of the bar front of the pawls which latter are urged to engage the teeth on the rack by tension springs I83:

To impart downward movement to the shoe pad operating pawls I19 and consequently additional clamping movements of the pads 93, the lever I1I is arranged to draw the link lfiii con nected to it rearwardly of the machine When'the' plunger I9 is acting to push the bottom filling. material out of the pick-up sleeve and'intothe' The lower The cam lever I59 haslugs.

The forward end of the link IE9 is pivoted to the upper end of a toggle.- link I 33 (see Fig. 2) the lower end of which is' These I55 which actuates the shoe clamping pads and this rack lies immediately in cylinder II. Such rearward movement of the link I 69 straightens the toggle links I13, I connected to the pawl-carrying lever IT! and, by thus thrusting upwardly on the rear end of that lever, pushes the pawls downwardly and moves the rack-bar downwardly accompanied by a fur" ther inward movement of the shoe-engaging pads 93. The pads are then retained in their further inward positions by the straightened toggle links I13, I15.

The rearward movement of the link I69 also presses the forward pin I61 against the roll I65 on the lever IBI near the end of the rearward movement of said link. The completion of the rearward movement of the link I 69 therefore rocks the three-arm lever I6I in a clockwise direction, as shown in Fig. 2 and, since the roll I-65 on that lever rides'against the vertical face behind it, the lever moves bodily forward a short distance. By reason of this forward movement the upper arm of the friction clutch controlling lever I33 on which the three-arm lever I6I is mounted also moves forwardly and its lower arm moves rearwardly. The rearward movement of the lower arm of the lever I33 causes it to push the rod IZI in the main shaft and thus to press the driven friction disc 31 out of engagement with the rotating disc 35.

The slide I39 controlling the roller clutch, however, remains in its raised position so that when the discs 35, 3'! are disengaged the main shaft is driven at low speed. The crank shaft then rotates at approximately three revolutions per minute. The plunger I9 accordingly forces filling material through the cylinder I1 and matrix and into the cavity in the shoe bottom at a sufficiently low speed to avoid appreciable compression of the material, thus avoiding undesirable expansion of the material after the cavity has been filled.

The amount of filling material forced into the cylinder I! on each stroke of the plunger I9 being in excess of that required to fill the largest cavity likely to be met, there will be more material than is required for filling cavities in small shoes. Since, however, the space between the matrix diaphragm I and the bottom of a shoe clamped against it is not closed at the heel end of the cavity, the operator may readily see when sur plus material is extruded. To prevent extrusion of material into a shoe after its cavity is filled, and while the extrusion pressure is continued by the plunger I9 a two-way valve manual I85 (see Figs. 2 and 3) is provided above the matrix box 9. The valve is located in the duct I5 leading from the cylinder I1 and has a handle I81 with a curved pad I88. The valve I85 has a passage cut in it, which on rotation of the valve, forms two ways, one of which is arranged to admit passage of filling material from the duct I5 to the matrix box 9 and the other to admit the excess material from the duct I5 to another duct I89 leading back to the supply drum so that excess material bypasses the matrix and is returned to the drum. The operator rotates the valve when the cavity in the shoe bottom is filled, the operation on the shoe then being completed.

After each filling operation is completed, the following additional operations occur:

(a) The clamping pads release the shoe for removal from the machine,

(1)) The clutch controlling parts are set to cut off rotation of the main shaft when the cycle has been completed, and

(c) The friction clutch re-engages to complete the advancing movement of and to retract the plunger at high speed enabling rapid return of the machine to its initial condition. To these ends the valve I05 has an arm I90 (Fig. 2) which is connected by a link I 9| to the lever I50. The lever l50 is operatively connected to lever III through lugs M8 and is actuated by its cam I-5I to reset the valve I to open position at the end of the operation of the machine.

The cam I10 which operates the lever HI and the cam lot which operates the lever I50 are face cams, of relatively small peripheral extent, and the cam levers Ill and I50 actuated thereby are arranged to remain frictionally in any position to which they are moved by their cams. It will be recalled that the shoe-engaging pads are held in firm clamping engagement with the shoe by the toggle links I13, I15.

The connection between the manual valve I85 and lever i59, and thence through lugs I48 with lever IJI is so arranged that when the valve cuts ofifurther entry of filling material into the matrix box, the lever I'll is rocked in a direction to move the toggle links out of alinement and the pawls I19 are raised until the pressure of the pads against the shoe is relieved. As link I69 moves forwardly, the rearward pin I61 engages the roll I66 on the lever I SI rocking this lever counter-clockwise and the clutch controlling lever I33 clockwise so that the disc 31 moves into engagement with the rotating disc 35.

The cam lever E50 has portions projecting above and below the lever I 49 allowing limited relative rocking movement between the two levers. When the cam lever I50 is rocked by manual operation of the valve I85 the lever I49 also is rocked in a direction to re-position the lower end of the latch-link I47, a spring I52 acting to swing the link over the slide I39. The roller clutch is thrown out of action on further rocking movement of the cam lever I50 as the cam ISI engages it during completion of a full rotation. The final downward movement of the slide E39 will bear downwardly on the rear arm of the lever IEiI and restore it to a position occupied when the machine is at rest, causing the upper end of the clutch controlling lever I33 to separate the discs 35, 3t on the main shaft. Repositioning the latch-link Ml above the slide I39 is not prevented by the notched lever I53 since it rocks idly, if necessary, during the return movement of the latch-link I41 above the slide. Ordinarily, the operator will remove his foot from the starting treadle I08 prior to this stage in the machine cycle and the notched lever I53 will usually be ready to move with the latch-link I41. It will thus be noted that manual rotation of the valve I65 will not only cut off the flow of filling material through the matrix and open communication between the cylinder and drum but will also release the shoe for removal from the machine, causing also the completion of the advancing and withdrawing movement of the plunger to its initial retracted position at high speed. As the crank shaft 6| completes a rotation, the descent of the slide I36 under the thrust of the latch-link I l'l will render both the friction clutch and the roller clutch inoperative so that the machine comes to rest with the parts, except for the valve I85 in their original positions. As the machine comes to rest, the cam lever I50 to which the valve I85 is connected is finally rocked to rotate the valve to reopen communication between the matrix box 5 and the cylinder I'I, thus allowing the advancing plunger I9 again to exc em-17* away from the rack bar and to hold themthereafter in withdrawn positions. For this purpose the lower ends of the pawls have below their pivot Edi? a relatively large hole 592 (Fig. 2). Freely mounted on the pivot its is a bell crank lever Idt'having an arm supporting a pin- I9d which enters loosely within the holes I92 in the pawls.. Lever I93 has an arm which carries a handpad at its forward end. Just rearwardly of the hand pad the lever IE3 has a relatively large hole through which passes a pin diameter than the hole. The pin I56 is fixed to a projection portion or" the head casting 3; When the machine is at rest, the bell crank lever I93is heldby its weight against the rear sides of the holes I92 in the pawls. When the pawls are raised to th lever Ills moves upwardly with them, the pin I96 passing through the forward arm of the lever comes into engagement with. the bottomof. its hole and on the continued rising of the pawls I79 the bell crank lever I93 is rocked about its pivot in a counterclockwise direction as viewed in Fig. 2 moving the pawl teeth rear-wardly out of engagement with the rack IBI. Simultaneously; the tails of the pawls above their pivot are cammed upwardly and forwardly by the latch in the form of a finger I 95 pivoted at I96 behind the tails of the pawls l'sii. The forward end of the finger I95 normally rests on the upper edge of the rack Isl but when the pawls H9 are elevated and rocked in the manner just referred to, their tails first lift the finger and then travel forwardly along its underside. Just as the pawls finish this rocking movement their tails pass in front of a shoulder on the underside of the finger I95 which holds the pawls positively gainst reengagement with rack liit. During the final rotational movement of the main shaft 33 before coming to rest, the cam-actuated link IE9 is moved rearwardly slightly by the camtl'm to lower the pawls Iii} to an inoperative position and, in so doing, the pawls allow the forward end of finger I525 to engage the top of the rack I8I which is then in its highest raised position. Thepawls then move further downward sufliciently to withdraw their tails from the finger I95 and their teeth are pressed into engagement with the rack liit by the springs R33.

It will be understood that if ashoe should have been improperly ciarnped by the pads 93 the operator may depress the bell cranklever I93 manually and thus disengage the pawls I'I9 from the rack I8! to free the shoe.

To keep the fillin drum 2i supplied-with filling material, the opening 23 in the drum is disposed opposite the lower end of a hopper iQB' provided behind the drun. The hopper I98 includesa series of relatively narrow vertical compartments material to be inserted intoaone I 516 of smaller 1 ere elevated position at the end. of a bottom filling operation and the bell crank a door allow blocks of. solid.

Each. compartment being open at its undersidexallowsz the; filling material upon soiteningto-flow d'olwrrel wardly 1 into the hopper. In. order to soften; the

filler block to enable flowing and spreading evenly over the cavity in a shoe bottom without, at the same time, reducing it to an undesirably fiuid condition the magazine has a heater includ-' ing electric heating cartridges and a water bath situated below the drum, the heating effect being controlled as required. The hopper also agitated within the drum assists in the even flowing of the plastic durin extrusion and in the reduction of any sitffness or lumpiness.

To introduce hot water to the material the illustrative machine is provided with a drip-feedoutlet comprising a -c pipe with hot water from a tank I99 through a control valve 2E5 on to the material in the lower part of the drum. The water becomes thoroughly admixed with is heated material and becomes evenly'disperserl, partly as vapor, assisting in disintegrating any lumps present.

The matrix box 5 (see Figs. 3, 4 and 12 to 15 inclusive) comprises the diaphragm l and the metal tube ii which clamps the diaphragm I in place against the backing plate I3 and provides a duct N3 through the matrix box, the diaphragm being about 5 inches in width and six inches in length. The upper wall of the box 5 has upstanding, internally threaded bosses 295 thereon to receive studs for securing it to the machineframe with the diaphragm in a generally horizontal plane pointing rearwarolly. Rigidly secured to the central portion of the upper wall of the box is the metal backing plate I3 for the diaphragm. This backing plate is similar in outline to the matrix box but is smaller in width by one and a half inches and in length by four and a half inches, its heel end of the plate approachin closer to the heel end of the box than its toe end. The backing plate is one third of an inch thick with a groove 2511'! running around its periphery, an overhanging edge being formed by the lower edge of the groove. Within the groove 28? are loosely held the inner ends of a series of radiating individually movable spring fingers 288.

These fingers each comprise a thin wedge-shaped platewhich presents an inclined lower surface, the sloping edges of the fingers atthe opposite sides of the box cooperating with the fiat lower surface of the backing plate to form a concavity complemental to the shoe bottom. The outer ends of the fingers 28,51 have short ears (see Fig. 3) extending into a shoulder 2 it] within the rim forming'the box' 9.- Between the upper edges of the fingers and the lower inside face of the box are a number of springs Till enabling the fingers 299 to yield'under the upthrust of a shoe, the ringers rocking about the points of contact with the groove till. The fingers 288 are preferably arranged in sets of four, those of each set lying side by side contacting relation with each other and being'retainedtcgether .by guide pinsttlrt; p!) jecting downwardly from the upper: wall: of. the, box; there being'a single spring for'eachset; sit-= ting, in :a recess. therein There .are .twelvevsets The addition of a limited amount; of hot water to the material being constantly" of fingers along each side of the box with the outer ends of the two sets near the toe end of the shoe spaced more than an inch apart, making only a small angle with each other. The outer ends of the most heelward pair of the finger sets extend substantially perpendicularly to the sides of a shoe. A single finger 2l5 (Fig. 12) of similar construction to the fingers 259 but three quarters of an inch wide at its outer side tapering to about a third of that width is provided in the gap between the pair of the finger sets at the toe end of the matrix. It will be understood that the spring fingers will yield individually as the forepart of a shoe is thrust against them and will accommodate themselves to the curvature along the shoe.

The spring fingers 2% and 2 [5 form a support for the diaphragm l which is secured in the matrix box solely by the enlarged head of the tube H. The upper end of the tube is threaded to receive a nut 2 it (see Fig. 14) which when tightened clamps the diaphragm to the central portion of the backing plate.

The diaphragm consists of four overlapping plates 2H, 2H! and 22!, shown in Fig. 15 of very thin resilient steel, which have a size and outline similar to that of the matrix box. The plate 2%! is adapted to engage the toe portion of a. shoe and is of V shape the inner end of the plate surrounding the fluid conducting tube l 6. Two other plates 2!?! overlap the sides of the toe plate and present a somewhat V-shaped gap between them. This gap is covered by the fourth plate 122i also surrounding the tube 5 l and overlapping the adjacent side plates. The overlapping portions of the plates are riveted to each other, thus presen ing a unitary diaphragm, the various portions of which may tilt and yield relatively to each other. There are, of course, no spring fingers above the central portion of the diaphragm and, in order to provide adequate support for the fourth plate 22! this plate has a metal bar 223 secured to its upper face of its heelward margin. This bar extends across the matrix box just beyond the heel end of the plate 22! and a spring 225 (see Fig. 3) is compressed between it and the upper wall of the box, the upper edge of the bar 223 tapering downwardly toward its ends. Above the matrix box is an electric cartridge 22? housed in a portion of the machine frame to maintain the box and the cylinder in a heated condition.

The procedure followed in setting the machine in operation consists in first starting the driving motor and closing the electric heating circuits. The valve 29! is opened to allow drip feed of water into the drum. After the drum has rotated and the machine heated for a sufficient period of time to ensure that the material in the drum has reached a smooth fluent condition free from unbroken lurnps, the operator presents a shoe to the central portion of the diaphragm. The shoe is held in firm contact with the diaphragm while the starting treadle of the machine is depressed.

epression of the treadle first causes the shoe clamping pads 93 to be moved inwardly against the shoe forcing it upwardly against the diaphragm l. The diaphragm then yields against the pressure of the top of the insole lip all round the forepart and just beyond the ball of the shoe. Continued depression of the treadle starts the machine at relatively high speed through the friction clutch 35, 31. The plunger l9 advances taking the pick-up sleeve 15 with it. The sleeve forces its way through the filling material and becomes filled therewith, the forward edge of the sleeve eventually coming into contact with the edge of the cylinder opening. The plunger continues to advance and to discharge the filling material measured by the pick-up sleeve into the cylinder. At this time the pads 93 are urged more firmly against the shoe and the drive for the plunger is transferred to the low speed roller clutch. The plunger then moves slowly along the cylinder extruding the filling material through the matrix box 5 into the shoe cavity.

As the filling material fills the shoe cavity, it first enters the toe end of the cavity and thereafter flows toward the heel until the whole cavity is filled. When the material commences to flow out the heel end the operator knows that the filling operation is completed and he rotates the valve 5S5. Rotation of the valve opens communication between the cylinder and drum and recouples the crank shaft 61 to the friction clutch 35, 3? so that the remaining operations take place at high speed. Rotation of the valve i855 also releases the grlp of the pads 93 on the shoe. Upon completion of a full rotation of crank shaft 6|,

the friction clutch 35, 3'1 and then the roller clutch are disengaged and the machine comes to rest. As the operator withdraws the shoe from the machine, he will hold it in fairly firm engagement with the diaphragm, causing it to iron the filling material on the shoe bottom thus evening any small irregularities in the surface of the filling material.

To prevent reverse movement of the driven member !23 in the roller clutch the main shaft 33 has fast on it a ratchet disc 229, shown in Fig. 7, and a pivoted pawl 23! mounted on the machine frame is connected by a link 233 to a laterally projecting arm 235 on the slide I39. The arrangement is such that when the slide I39 moves downwardly far enough to cause the member 529 to engage the abutment I28 on the roller clutch the pawl 23! will swing into engagement with disc 229 and will positively prevent the shaft from suddenly rotating in the reverse direction.

Conveniently the hopper I98 for initially receiving the blocks of solid thermoplastic filling material may have an electrically heated water bath 225i secured to its rear wall fed with water from a tank 39 through a conventional drip feed arrangement. A tube 239 (Figs. 1 and 2) leads from the upper side of the water bath 237 through the rear wall of the hopper I98 and into a vertical space E li formed between said rear wall and a partition 262 secured in the hopper just in front of the rear Wall proper. The partition 242 has a series of holes in it through which steam generated by the water bath may percolate into the space in the magazine occupied by the fiiing material. With a small sized shoe the cavity therein may be completely filled before the cam ll!) has disengaged the cam lever Ill so that it is impossible to operate the extruding valve to terminate the extruding operation.

To enable this valve to be operated before the cam lit disengages its lever ill a modified form of construction is provided more particularly illustrated in Fig. 17. This modified construction inciudes the connection between the valve and the lever I ii in which a block 5'3! is rotatably mounted on the valve. Between bifurcated portions of this block is received a valve controlling member 553 secured to the valve. Pivoted to the block 5d! at 535 is a pawl 5511 which lies rearwardly of the member 533 and is arranged to engage'a shoulder 599 on said member. The member 503 is urged into engagement with the shoulder filiflby means of a spring-pressed plunger H which is received in the block 555 and engages an upwardly extending tail portion of the pawl 56?. Pivotally mounted on the block bill, also at 5&5, is the link lei, connected at its lower end to the cam operated lever 553. This link has connected to its lower end a tension spring till! the upper end of which is connected to a stud 5P5 on the member {ill-3. Also pivoted at Slit on the block 58-! is a lev r till, the upper arm of which has a tooth received between bifurcations on the tail of the pawl 56?. A rearward surface of the lever 'lil'l is urged into engagement with a horizontal rod 5w by means of a spring-pressed plunger 52! received in the block 591 The rear ward end of the rod bill is pivotaliy connected to an upwardly extending arm 523 which is rotatable on the outer end of a shaft 524 which replaces, pin "it previously referred to and which carries a plunger operating member rocked by the pitman 67, as in the form of construction illustrated in Fig. 2. Secured on the forward end of the rod M9 is block 525 pivotally connected to a depending arm of a bell crank lever 52? pivoted at 529 to the machine frame. A rearwardly extending arm of this lever is pivotally connected to an upper end of a treadle-actuated rod bit. The rod M9 is normally urged rearwardly into a position determined by engagement of the block 525 with a lug on the machine frame which supports the forward end of the rod 559. To urge the rod Elli! rearwardly its forward end is surrounded by a spring 525 compressed between the lug 532 and a collar 537! secured to the rod 5E9; When the valve is in a position to'allow bo tom filling material to be extruded into a shoe cavity, the parts just described are in positions shown in Figure 17, an upper surface of the lever 5H abutting against an under surface of a block 5353 secured to the machine frame. During the operation of the machine on a shoe, when the operator wishes to cut off the fiow of bottom filling material from the shoe cavity, he depreses the treadle rod 53!, thus rocking the bell crank lever 52? in a, clockwise direction as seen in Figure 1'7. This moves rod 559 forwardly to push the upper end of lever Ell out of engagement with the block 539 and to rock the pawl Eill'in a counter-clockwise direction as seen in Figure 17, unlatching the valve controlling member 563. The valve controlling member then being disconnected from the rod his swings under the influence of the spring Sit, stopping the flow of material. Movement of the valve in a counter-clockwise direction is limited by engagement of a pin 54 secured in the member 5%, with a fixed portion of the machine frame. When this occurs the spring 5 i3 is still under tension and, when the cam. l'lll rides clear of the cam roll on lever ill to free the lever lfill, so that the spring EH3 acts to swing the cam lever ill in a counter-clockwise direction thus moving the link l9! to swing the block 58!, pawl 5M and lever 5|? counterclockwise about the axis of the valve I85 until the spring controlled plunger 5! i urges the pawl into relatching engagement with the shoulder but in the valvecontrolling member 5233.

When the cam operated lever Hill is eventually swung counterclockwise to reopen the valve, the link It! first rotates the block 5M and valve operating member 593 as a single unit in a clockwise direction until the upper end of lever 5H rides underthe block 539; The valveis then held in its position to supply bottom fillingmaterial to a shoe bottom cavity.

In order to ensurethat the valve I is turned to its off position and the high speed clutch 35,, 371 engaged when the reciprocating plunger 19 reaches its most forward position, even if the operator does not operate the valve manually, thearm 523 is engaged by a set screw 543 carried in a short lever 5.45 secured to-the shaft 524. Just. as the plunger is reaching its most forward posi-= tion the arm 523 is rocked and the rod 519 moved forwardly'to operate the valve I35 automatically to stop the flow of filling material. The. consequent counterclockwise rotationv of cam lever I50.- causes the friction clutch to be engaged and the; shoe clamping means to release the shoe. The machine then completes its operative cycle at, high speed.

In order to provide means for adjusting the eff-ective stroke of the reciprocating plunger and hence of the amount of material picked up and delivered to a shoe bottom cavity by the sleeve .l'fi, the plunger operating member comprising the bell crank lever BS-is replaced by lost-motion con.- necting means, including the-pitman 61 lying between forwardly projecting portions of twopa-rallel plates 549, pivoted tothe pitman i1 by'means of a pin 54?. These. plates are spaced apart widthwise of the machine (one being shown'in Figure 17) and are rotatably mounted on the shaft 524. Secured to the shaft 524 is an arm 5M connected at its upper end by a pin 553 to; the link l3 which, inturn, is connected to the plunger l9. The plates 549' have portions 550 lying rearwardly of the arm- 554' and these portions are provided with a connecting pin 555. passing through a bore in which is freely received a stem portion of an'adjustable bolt 551. The bolt is threaded into atrunnion on the arm 55!. The portions see of the plates 549 form abutments which engage the arm 55lat an instant determined by the setting of the bolt 551. During counterclockwise movement of the platesMQ-by the crank operated link 61, the arm 55-h swings to move the plunger l9 forwardly. During-subsequent clockwise swingingof the plates 54.9 the plunger remains stationary until the head of the 7 bolt 551 contacts with the pin 555.

The nature and scope of the inven ion having been indicated and particular embodiments having been described, what is claimedis:

l. A machine for applying and spreading filling material within the cavity along the. bottomof. a shoe having a member for engaging the marginal portion of the shoe bottom around the cavity to be filled to hold the material Withinthe cavity while an extruding pressure is being exerted, a containerfor a supply mass of filling material and recipro-catory feeding. means for. transferring the material from the supply into said cavity, in combination with a device acting to separate from the mass within the container for use-in the feeding means an. amount of material in excessof that required to fill the cavity. in the shoe.

2. A machine for applying and spreadingfilling material within the cavity along thebottom of a, shoe having a member for engaging the marginal I portion of the shoe bottom around the cavity to be filled to hold the material within the cavity while an extruding pressure is being exerted, and a container for a supply mass of filling-ma erial, in combination with extruding means including a cylinder communicating with the bottomengagiing member, a plunger in the cylinder anda device associated with the cylinder for separa ing an amount of material from the mass withinthe container in excess of that required to fill 'the*cav' ity of the shoe;

3. A machine for applying and spreading filling material within the cavity along the bottom of a shoe having a member for engaging the marginal portion of the shoe bottom around the cavity to be filled to hold the material within the cavity while an extruding pressure is being exerted, and a conainer for a supply mass of filling material, in combination with an extruding plunger, a cylinder within which the plunger reciprocates, communicating with the bottom engaging member to transfer the material from the supply container to the cavity in the shoe and a device for separating an amount of material from the mass within the container in excess of that required to fill the cavity in the shoe and for disposing it in the path of the plunger.

4. A machine for applying and spreading filling material within the cavity along the bottom of a shoe having a member for engaging the marginal portion of the shoe bottom around the cavity to be filled to hold the material within the cavity while an extruding pressure is being exer "d, and a container for a supply mass of filling material, in combination with an extruding plunger, a cylinder within which the plunger reciprocates. communicating with the bottom engaging member to transfer the material from the supply container to the cavity in the shoe and a sleeve in alinement with the cylinder arranged to separate an amount of material from the mass within the supply container in excess of that required to fill the cavity of the shoe.

5. A machine for applying and spreading filling material within the cavity along the bottom of a shoe having a member for engaging the marginal portion of the shoe bottom around the cavity to be filled to hold the material within the cavity while an extruding pressure is being exerted, and a container for a supply mass of filling material, in combination with a plunger acting within the supply container, a cylinder opening into the supply container for the plunger and communicating with the bottom engaging member, mechanism for actuating the plunger toward and from the opening of the cylinder in the supply container and a sleeve surrounding the plunger in frictional engagement therewith for movement with the plunger to separate an amount of material between the sleeve and the opening in the cylinder from the mass within the supply container in excess of that required to fill the cavity of the shoe.

6. A machine for applying and spreading filling material within the cavity along the bottom of a shoe having a member for engaging the marginal portion of the shoe bottom around the cavity to be filled to hold the material within the cavity while an extruding pressure is being exerted, a container for a supply mass of filling material and a reciprocating plunger acting at the lowermost portion of the container for feeding material from the supply into said cavity, in combination with means for supporting the container for rotation to enable the mass of material in the path of the plunger to be agitated during the feeding stroke thereof.

'7. A machine for applying and spreading filling material within the cavity along the bottom of a shoe having a member for engaging the marginal portion of the shoe bottom around the cavity to be filled to hold the material within the cavity while an extruding pressure is being exerted, a container for a supply mass of filling material and a reciprocating plunger acting at the lowermost portion of the container for feeding material from the supply into said cavity, in combination with means for supporting the container for rotation to enable the mass of material in the path of the plunger to be agitated during the feeding stroke thereof, a cylinder communicating with the supply container for receiving the plunger, and a sleeve through which the plunger moves to discharge into the cylinder a predetermined amount of filling material separated from the mass by the sleeve as the plunger advances.

8. A machine for applying and spreading filling material within the cavity along the bottom of a shoe having a member for engaging the marginal portion of the shoe bottom around the cavity to be filled to hold the material within the cavity while an extruding pressure is being exerted, a container for a supply mass of filling material and a reciprocating plunger acting at the lowermost portion of the container for feed ng material from the supply into said cavity, in combination with means for supporting the container for rotation to enable the mass of material in the path of the plunger to be agitated during the feeding stroke thereof, a cylinder communicating with the supply container for receiving the plunger, a sleeve through which the plunger moves to discharge into the cylinder a predetermined amount of filling material separated from the mass by the sleeve as the plunger advances, and a baffle in the supply container for crowding the material into the path of the plunger as the container is rotated.

9. A machine for applying and spreading filling material within the cavity along the bottom of a shoe, having a matrix against which the marginal portion of said shoe bottom is pressed to hold the material within the cavity while an extruding pressure is being exerted, a container for a supply mass of filling material, and power-operated means acting with a single stroke to feed filling material from said container to the shoe cavity under an extruding pressure, in combination with means under the control of the operator for terminating extrusion of the material into the shoe cavity while the power-operated feeding means continues its stroke.

10. A machine for applying and spreading filling material within the cavity along the bottom of a shoe, having a matrix against which the marginal portion of said shoe bottom is pressed to hold the material within the cavity while an extruding pressure is being exerted, a container for a supply mass of filling material, and power-operated means for feeding filling material from said container to the shoe cavity under an extruding pressure, in combination with means for preventing extrusion of the material into the shoe cavity while the pressure is continued, and a duct connected to the extrusion preventing means for returning the excess material to the supply container.

11. A machine for applying and spreading filling material within the cavity along the bottom of a shoe, having a matrix against which the marginal portion of said shoe bottom is pressed to hold the material within the cavity while an extruding pressure is being exerted, a container for a supply mass of filling material, and power-operated means for feeding filling material from said container to the shoe cavity under an extruding pressure, in combination with a two-way valve for cutting off the filling material from the shoe cavity while the extruding pressure is continued and for returning the excess material to the supply container.

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