US3044086A - Heel attaching machines - Google Patents

Description

y 1962 A. s. DOROSZ ETAL 3,044,086

'I-IEEL ATTACHING MACHINES Filed Dec. 21, 1960 5 Sheets-Sheet 1 Inventors Adolph 6. Dorosz Leo F Stanton By their Attorney Ju ly 17, 1962 A. s. DOROSZ ETAL 3,

HEEL ATTACHING MACHINES 5 Sheets-Sheet 2 Filed Dec. 21, 1960 July 17, 1962 A. s. DOROSZ ETAL 3,04

HEEL ATTACHING MACHINES 5 Sheets-Sheet 3 Filed Dec. 21, 1960 United States Patent 3,044,086 HEEL ATTACG MAC Adolph S. Dorosz, Beverly, and Leo F. Stanton, Newhuryport, Mass., assignors to United Shoe Machinery Corporation, Flemington, N..I., a corporation of New Jersey Filed Dec. 21, 196i), Ser. No. 77,368 20 (Ilaims. (Cl. 12-126) This invention relates to machines for attaching heels to shoes by outside nailing and more specifically to an improved jack which may be advantageously used in place of the jack disclosed in United States Letters Patent No.

3,030,625, granted April 24, 1962, on an application filed in the name of Leo A. Crowell.

It is an object of the present invention to provide in a heelattaching machine, an improved jack upon which geometrically graded lasts having shoes mounted on them may be quickly and effectively positioned and clamped as well as from which said lasts may be quickly and effectively removed with a minimum amount of effort on the part of the operator.

As disclosed in the above-mentioned Patent No. 3,030,- 625, geometrically graded lasts have formed in them thimble holes the axes of which are spaced graduated distances from the rear ends of the heel seats of the lasts in accordance with the sizes of the lasts, each of which comprises a positioning plate having at its rear end an undercut lip and has at its opposite sides shoulders spaced equal distances at opposite sides respectively of a vertical median plane of the heel seat of the last.

The jack comprises a post having an abutment face which in the illustrative machine faces downward and is adapted to be engaged by the upper surface of the positioning plate of the last presented manually to the jack. The last is initially located on the bottom face of the jack post by the engagement of the undercut lip of the heel positioning plate of the last with a latch or combined back gage and supporting member, said positioning plate presented to the jack post lying between a stop stud and an orienting member which are fixed to and movable on the jack respectively and are arranged opposite the opposing side shoulders of the positioning plate of the last presented to the jack. Mounted on the jack, which is movable between a fixed loading and unloading position on the one hand and a fixed but initially heel attaching position on the other hand is a last pin or spindle movable through an aperture in the abutment face of the jack between a retracted position in which the pin is masked by said abutment face of the jack and a retracted position in which the pin extends a predetermined distance beyond said abutment face] After initially positioning the last upon the abutment face of the jack, the jack is swung from its loading and unloading to its heel attaching position and in response to such movement and in accordance with a feature of the invention the last pin is power actuated from its retracted to its projected position on the jack whereby to cause it to enter the thimble 1 hole of the last. As the last pin moves to its projected position upon the jack post the orienting member of the jack is moved by power against one of the side shoulders of the positioning plate of the last causing the other shoulder of the positioning plate to be forced against the stop stud of the last post whereby to orient the last about the last pin.

In accordance with another feature of the present invention power means is provided for tilting or swinging the projected last pin relatively to the jack post whereby to cause said pin, in cooperation with the combined back gage and support, to clamp under substantial pressure the flat upper face of the positioning plate of the last oriented upon the last pin against the bottom or abutment face of the a jack post thus enabling the operator to remove his grip on the work during the power cycle of the machine.

The present invention consists in. the above features and in novel features hereinafter described, reference being had to the accompanying drawings which illustrate one embodiment'of the invention selected for purposes of illustration, said invention being fully disclosed in the following description and claims.

In the drawings, a 4

FIG. 1 is a view showing in perspective the illustrative jack incorporated in a heel attaching machine of the general type disclosed in United States Letters Patent 1,157,- 688, granted October 26, 1915, on an application filed in the name of Lester L. Glidden, a post of the jack being illustrated in its full line loading and unloading position as well as in its dash-line heel attaching position;

FIG. 2 is a view showing the'post of the illustrative jack in its loading and unloading position with a shoe which is mounted on a geometrically graded last presented thereto, a casing of said post being broken away to i show mechanism housed in the casing;

FIG. 3 is a view similar to FIG. 2 but showing the post of the jack in its heel attaching position and showing a heel seat of a shoe mounted on the jack forced against a heel in a heel carrying form or gage of the machine;

FIGS. 4 and 5 are sections on lines IVIV and V V respectively of FIG. 3;

FIG. 6 is a view of the bottom of VI of FIG. 3;

FIG. 7 is a view on line VIL-VII of FIG. 3 showing in full and dash lines and outlines of right and left geometrically graded lasts, respectively, which are positioned on the jack, with relation to the heel gage;

FIG. 8 is a side elevation, partly broken away, of the upper end of the jack;

the jack on line VI- FIG. 9 is a perspective view showing, partly in longitudinal section, the rear end of a finished shoe which is mounted on the geometrically graded last and has been operated upon by the illustrative machine, material which has been trimmed from a composite heel of the shoe during a separate trimming operation being shown in dash lines;

FIG. 10 is a schematic view showing the vertical median outlines of the rear ends of geometrically graded lasts which are of different sizes and have been positioned in the machine above a heel carrying form by the use of the present jack;

FIG. 11 is a schematic electric-fluid pressure diagram for use in describing the operation of the machine; and

FIG. 12 shows, partly broken away, in side elevation a slightly modified jack post.

The illustrative machine, except for an improved jack 20, is identical to the machine disclosed in the abovementioned Patent No. 3,030,625, and is described with reference to the attachment of rubber heels 22 (FIGS. 1, 3, 7 and 9) and their associated base lifts 24, collectively referred to as composite heels, to heel seats 26 (FIG. 9) of the outsoles 28 of mens shoes 30 built on geometrically graded lasts 32.

As explained in said Patent No. 3,030,625, the geometrically graded last 32 is provided with a thimble 34 (FIGS. 3, 4, 7 and 10) having an axis 36 and a heel seat 38 formed, by a heel plate 40 against which nails 42 (FIGS. 1 and 9) are clinched, said nails being driven into the work by drivers 44 (FIG. 1) reciprocable in passages 46 of a nailing die 50 of the machine.

As best illustrated in FIG. 10, geometrically graded lasts 32 of different sizes have the rear ends 40a of their heel seat plates 40 and accordingly their heel seats spaced dilferent distances D respectively, from theaxes 36. of the thimbles 34 of the lasts, the greater the size of the last the greater being the distance D. The thimble 34 The jack 20 with work'manually presented to it is swung by the: operator between an inclined loading and unloading position, which is shown in FIG. 2 and in full lines in FIG.-.1, and an upright or heel attaching position which is shown in FIG. 3 and in dash lines in FIG 1. The work with the assistance of positioning means which is mounted on the jack 20 and is hereinafter described, is manually presented to the jack in its loading and unloading position and as the jack is swung back to its heel attaching position a last spindle or pin 52, which forms part of the jack, is moved by power from a retracted position shown in FIG. 2 to a projected position shown in FIG. 3 into the thimble holes $411,341) of the last 32. When the last pin 52 has assumed its projected position during movement of the jack 20 to its heel attaching position, the last is automatically oriented by power upon the last pin 52 which is simultaneously tilted counterclockwise slightly, as viewed in FIG. 3, under pressure on the jack and cooperates with the positioning means above referred to firmly to clamp the oriented last in a I predetermined position to the jack.

the last upon the spindle or'pin .52 which comprises a Mounted on the bracket 70 is the carriage 66 which bears on a fiat upper surface of the bracket and has at its rear end bores for receiving aguide rod 78 secured to the bracket. The carriage 66 is moved from its attaching position to the -left (FIG. '1) against the action of a spring (not shown) over the upper surface of the bracket and over the upper surface of a multiple nailing die 50, which is positioned in and is secured to the bracket, in response to movement of a loader block (not shown) until it engages a stop (not shown) secured to the guide rod, whereby to clear the upper surface of the nailing die so that the nails 42, then in the passages 4-6 of the loader block, may be dumped from the block into the passages of the nailing die, said carriage being returned by the above-mentioned spring to its attaching position against a second stop (not shown) as the loader block is moved back to a nail receiving station (not shown). As above explained, mounted for vertical movement in the passages 46 of the nailing die 50 are the drivers 44 which serve to drive into the work the nails 42 which have been dumped into the passages of the die.-

The carriage 66 has an undercut guideway 80 (FIG. 1) for receiving the form 68 which comprises a bottom plate 82 (FIGS. 1, 3, 7 and 10) having openings 84 and, when the carriage is in its attaching position, is arranged in substantial engagement with the upper surface of the cylindrical upper portion 52a, an intermediate. frustoconical or beveled portion 52b and an end stud portion 52c defined in part by a semi-circular cylindrical face or hearing portion 53. The positioning plate 54, which has a planar upper face 54a, constitutes part of the last 32 and is disclosed in detail in United States Letters Patent No. 2,806,233, granted September 17, 1957, on an application filed in the names of Arthur R. Hubbard et a1. As above explained in Patent No. 2,806,233, right and left geometrically graded lasts 32 have the center lines .56 (FIG. 7) of their foreparts, which center lines extend between the tip of the toe end of the bottom of the last and the axis 36 of the thimble 34, disposed at equal angles alpha arranged at opposite sides of a vertical median plane 58 of the heel seat of the last, this plane including a line extending between a rear end 40:: of the heel plate 40 of the last and the axis of the thi-rnble. The positioning plate 54 of the right and left lasts 32 have front and rear pairs of parallel planar shoulders 60, 62 (FIGS. 3, 4, 7, 9 and 10) respectively, said plates being so located on the upper faces on the back cones of the right and left lasts that the front shoulders 60 are parallel to and spaced equal distances from the center lines 56 of the forepants of the lasts .and the rear shoulders 62 are parallel to and are spaced equal distances from the vertical median planes 58 of the heel seats 38 of the lasts.

' It will be noted that the heel seats 38 of right and left lasts 32 positioned in the machine are substantiallycoincident and that the toe ends of right and leftlasts swing laterally away from each other. I It will also be noted reference plane (not shown) of the machine; The posikstioning plate 54 of the last 32 has at its rear end an undercut lip 64 (FIGS. 2, 3, 7 and the purpose of which will appear presently.

The present machine, only a portion of which is illustrated, is generally similar to the machine disclosed in said Patent No. 1,157,688. The machine is provided with a carriage 66 (FIG. 1 upon which is mounted a rubber heel form 68 (FIGS. 1, 3, '7 and 10) which is generally similar to the form disclosed inUnited States Letters Patent No. 1,365,802, granted January 18, 1921, on an application filed'in the name of John F. Standish. The machine comprises a bracket 70 whichis secured by nuts 72 to upstanding posts 74 forming part of-a main frame 76 of the machine. 7

nailing die 50 with its openings inregister with the passages 46 of said die. The form 68 has a cavity 86 adapted fittingly to receive and to locate the rubber heel 22 in a predetermined position, the position of said form in the guideway of the carriage 66 being quickly and efiectively established by engagement of a spring-pressed .plunger 88 (FIG. 1) which is slidingly mounted in a bore of the carriage and a bore (not shown) of said form. The rubber heel receiving form 68 has secured to it by screws 92 a base lift or upper form 94- provided a with a cavity 96 for positioning'on the carriage 66 the base lift 24 associated with the rubber heel 22.

It will be noted that vertical elements 98 (FIG. 10) defining the rear endsof the heel cavities 86 of the form 68, which are adapted to receive heels of different sizes, lie in a common line. Accordingly, it is desirable that the rear ends 48a of the heel plates 40 of lasts which are of different sizes and are mounted on the jack 20 arranged inits heel attaching position in the machine, shall, for a given extension of the outsole 28 beyond the feather line 100 of the shoe, lie in a fixed vertical line 102 which is parallel to and is located a substantially fixed distance just ahead of the line 88 of the coincident vertical elements of the cavities of the forms. With the above arrangement it will be appreciated that the rear ends of the feather lines 108 of the shoes above-mentioned fall substantially along a line of the vertical elements 98 of the rubber heel forms 68.

The jack 20 comprises a post 104 journaled on a hearing pin 106 (FIGS. 1 and 8) mounted in bores 108 of a pair of depending bosses of a carrier slide 110' which.

is initially adjustable in a guideway 112 formed in a housing portion 114 of a plunger 116 slidingly movable along a vertical guideway 118 of the main frame 76 of the machine. The carrier slide- 110 has formed in it a slot 120 for receiving a headed bolt 122 which extends upward through a bore in the housing portion 114 of the plunger 116 and onto which is threaded astepped sleeve 124 having mounted on it a handle 126 provided with a pin 126a fitting selectively in one of a plurality of external grooves 128 formed in an enlarged lower portion upon the bearing pin 106, said heel attaching position being established by the engagement of the upper face 132 (FIG. 8) of the post with the bottom of the carrier slide 110. In order to hold the jack post 104 in its heel attaching position on the one hand and its load ing and unloading position on the other hand the post has swiveled on it a spring-pressed pin 134 provided with a V-shaped upper end which bears in a notch formed in the bottom of one of the boss portions of the carrier slide 110, said pin being depressible to release the jack post for movement from one operating position to another.

As above explained, the vertical elements 98, which define rear ends of the forms 68 having different sized cavities 86, are arranged in a common vertical line of the machine when the carriage 66 is in its heel attaching position beneath the jack 20. Accordingly as above explained the distance D between the axis 36 of the thimble 34 of the last 32 and the rear end 40a of the heel seat 33 or the heel seat plate 40 of the last will vary in lasts of different sizes, the greater the size of the last the greater being this distance. With the foregoing considerations in view and having in mind the fact that the jack post 104, which is mounted on the carrier slide 110, assumes the same attaching position for any one initial setting of the slide, it will be clear that in order to accommodate work of different sizes, the rear ends of the feather lines 160 of the shoes 30 in their heel attaching positions must lie in the above-mentioned fixed vertical reference line 98 which is also arranged in the fixed vertical reference plane of the machine. Accordingly, it is necessary to adjust the carrier slide 110 forwardly or rearwardly on the plunger 118 preparatory to operating upon work of a size different from that which has just precedded it. To provide for this adjustment the housing portion 114 of the plunger 116 has secured to it by screws a bracket 136 having fixed to it a bearing pin i138 upon which a disk 140 is mounted and secured to the disk are abutments or abutment pins 142 the forward ends or end faces 142a of said pins being located at different size-graduated distances from the forward face of the disk. The disk 140 may be initially rotated on the bearing pin 138 to a desired operating position or setting in which any one of the end faces 142a of the abutment pins 142 is in axial alinement with a stop or stop screw 144 adjustably mounted on an angle plate 146 secured by screws 148 to the forward end of the carrier slide 110. The disk 140 has a projection carrying a spring-pressed stud 150 which is adapted to fit in any one of a plurality of recesses 152 formed in the bracket, the recesses being numbered in order that the operator may readily move the proper abutment pin 142a into axial alinement with the stop screw 144 to accommodate the work on hand.

In order initially to position the jack post 104 on the plunger 116 in accordance with the size of the work to be operated upon, it is necessary to rotate the handle 126 counterclockwise, as viewed from above, to release as above described the carrier slide 110 for forward and rearward movement along the guideway 112 of the housing 1" portion 114 of the plunger, said slide after being released,

144, the disk being held in its adjusted position by the en- 7 gagement of the spring-pressed stud 150 in one of the recesses 152 of the bracket 136. The carrier slide 110 is then moved rearward along the guideway 112 of the housing portion 114 of the plunger 116 until the stop screw 144 carried by the slide engages the end face 142a of th axially alined abutment pin 142, the handle 126 then being swung clockwise, as viewed from above, to secure the carrier slide to the plunger.

. Secured by a screw 154 to the jack post 104 and arranged at one side of a bottom or abutment face 156 of said post is a stud or stop 158 and journaled on a fulcrum latch or back gage and last support 153 having a face 153a which, during the operation of the machine, is engaged or interengaged by the undercut lip 64 of the positioning plate 54 of the last 32 aswill be hereinafter explained.

The lower end of the jack post 104 has formed in it a large clearance opening 163 below which is an oval passage 164 formed by an inwardly extending flange 165, said passage being adapted to allow free movement of the last pin or spindle 52 therethrough, the cylindrical upper portion 52a of the last pin, as best shown in FIG. 6, having a diameter somewhat less than the longitudinal diameter of the passage but substantially fitting, with a sligh amount of clearance transversely of the passage. Secured by a bearing pin 166 to the upper end of the last spindle 52 is a rod 168 the upper end of which fits slidingly in a passage 170 formed in a lugof the jack post 104, said last spindle being pivotally connected through said bearing pin to a bifurcated bar 172 fixed to the lower end of a connecting rod 174 slidable in alined boresof a floating bracket 176 and a cylinder 178 secured necting rod 174 and the bifurcated bar 172 may be collectively defined as a connector.

,7 The cylinder 178 has a bore 186 in whichvis slidable a piston 188secured to the upperend of the connecting rod 174, a spring 189, being housed in the bore below the pislton. Secured to upper and lower end portions respectively of the cylinder 17 8 and the floating bracket 176 are studs 190, 192 whichare slidable respectively along parallel slots 194, 196 formedat opposite sides of the jack post 104. Extending through bores 198, 200 formed respectively in the jack post and the floating bracket 176 is a rod 202 and surrounding this rod and interposed between the bracket 176 and the lug of the jack post 104 is a heavy coil spring 204 which serves constantly to depress the cylinder 178 and the bracket 176 as a unit to an extent permitted by the engagement of the studs 190, 192 with the lower ends of the slots 194, 196. The bracket 176 has a rod, 206 pivotally connected to it, a lower end of said rod atall times being in engagement with a notch.

208 formed at the upper end of the L-shaped lever 162. A spring 210 interposed between the L-shaped lever 162 and the jack post 104 serves constantly to swing the lever clockwise as viewed in FIG. 4 and accordingly to a retracted or inactive position on the post.

Embedded in a rubber base 212 which fits in a pocket of and is secured to the jack post 104, is a stop 214 adapted to be engaged by a notch at the bottom of the bifurcated bar 172 whereby to limit downward movement of the bar under the action of the piston rod "194. When the jack post 104 is in its loading and unloading position the last pin 52 is in its retracted position best shown in FIG. 2, said pin being masked by the bottom or abutment face 156 of the post andthe piston 188 and the bar 172 being in their raised idle or retracted positions in said post.

The shoe 30' is manually presented to the jack post 104, which is in itsrloading' and unloading position, the upper face 54a of the positioning plate 54 of the last 32 being brought into engagement with the planar bottom face 156 of the post between the stud 158 and the orienting lever 162, which are fixed and journaled respectively on the post, and then being slid rearwardly along said bottom face until the undercut lip 64 of the positioning plate 54 ,of the last engages the face 15311 of the combined back gage and support 153, said last being so positioned on the post that when the last pin. 52 is moved on the jack post from its retracted position shown in FIG, 2 to its projected opposite sides of the bore 164. j a 7 As the jack post 20 is swung rearward from its loading aoeaa .7 v a position shown in FIG. 3 the pin will enter the spindle hole of the thimble 34 of the last. 4 i

Instead of presenting the shoe 30 to the jack post 104 V v as above described, the operatormay hookT the undercut portion 64 of the'positioning plate 54 of the last 32 onto the combined back gage and support 153 and then swing the upper face 54a of said positioning plate included between the stud 158 and the abutment 162 against the bot- .tom face 156 of'the post. In order to assist in initially positioning the last 32 upon the bottom face 156 of the.

jack post 104 the post maybe provided with a pair of abutment 216 which are-illustrated as extensions of side plates ofthe post and arearranged equal distances at to be moved from its retracted position to its projected position on the post, and the last to be oriented upon the projected last pin and to be clamped in its oriented position to the jack as will be hereinafter explained.

- The cylindcr 178 has a'port 218 (FIGS; 2, 3 and 11) open to the piston 188 and connected by a line 220 to a port 222 of a'solenoid valve 224 provided with a bore '8 gagement with the entire upper end of the cylindrical inner face or wall 341: of the thimble 34 and the entire semi-circular cylindrical face 53 of the end stud portion 52c of the last pin is in engagement with the forward portion'of the cylindrical face or wall 341) of the thimble 34, the frusto conical portion 52b of the pin serving slightly to shift-the last on the bottom face 156 of the jack as the pin enters the upper thirnble hole 34a of the last. The circular cylindrical face of the upper cylindrical portion 52a of the pin 52 and the semi-cylindrical face 53 are centered about a common axis which is coincident with the axis 36 when the last 32 has been moved to its operative position on the jack 20.

Movement of the last pin 52 to its projected position beyond the bottom face 156 of the jack post 104 is limited by the engagement ofthe bar 172 with the stop 214 which, as above explained, is inserted in a rubber base 212 secured to the post. At this time the piston 188 comes to rest and the air pressure operating against the face 248 of the cylinder 178 causes the cylinder together with the 226 Movable in the bore 226 of the solenoid valve 224 is a solenoid slide 228 which comprises a spool and is norspring 230, the port 222 of the solenoid valve at this time being open toan exhaust port 232 and a port- 234, which is open through a line 236 to air under pressure, being closed from the'port 2 22.

Surrounding a portion of the solenoid slide 228 is a coil 2'38'forming part ofa circuit 240 energized in response to the closing of a normally open switch 242 which is secured to the carrier slide 110 and comprises a plunger 244 displaceable againstthe action ofa spring (not shown). The. switch 242 is mounted in a housing. 231

position the switch 242 is open, the coil 238 is deenergized and the piston 188 is in'its retracted'or idle position shown in FIG. '2. As the jack post 104 moves toward its upright or heel attaching position'shown in FIG. 3 it moves the'slide 235 against the action of the spring 239 causing the plunger 244 to be moved across the terminals of the switch 242 with theresultthat the circuit-240 is closed and the solenoid 228 is moved to its dash-line position and accordingly high pressure air in the line 236 is available through the means above described for the piston 188. As the jack post 104 is swung forward it is moved away from the slide 235 with'the-resultthat the switch 242 is opened, the solenoid valve- 238-is deenergized and the piston 188 is raised to its idle position by the action of the spring 189.

After the work has been initially presented to the jack post 104 thepost is'rnanually swung rearwardly causing high pressure 'air to be available forthe piston 188. When the piston 188 is lowered the bar 172 is lowered with it causing the roll'182 to ride along the vertical face 184 of the fioating'bracket 176, and the last pin 52 to be moved from its retracted position shown inFIG. '2 to its projected'position shown in FIG; 3, the pin entering the spindle or pin 52 is in, its fully projected position (FIG. 3 the upper cylindrical portion 52a of said pin is in enmally urged to its position shown in FIG: 11 by a coil 7 against the action of the spring 204, the cylinder and the bracket as they are raised being cammed to the left as viewed in FIG. 3 by the action of the studs 190, 192 along the slots 194, 196.

It will be noted that when the cylinder 178 and the bracket 176 are in their lowered idle positions in the jack post 104 the rod 206, which is journaled to the bracket, retains the L-shaped lever 162 in its inactive or idle position shown in dash lines (FIG. 4) so as to enable the operator initially to present the last 32 to the jack post in its loading and unloading position. When the cylinder 178 and the bracket 176 are moved to their raised positions (FIGJ3) in the jack post 104 the rod 206-is raised in said post and the spring 210 causes the L-shapcd lever 162 to swing against one of the shoulders 62 of the positioning plate. 54 of the last 32 and thus to cause the other shoulder 62 of said plate to be forced against the stud or stop 158 whereby to orient the last upon the last pin 52, the undercut lip 64 of the positioning plate 54 of the last being retained in engagement with the face 153a of the combined back gage and last sustaining member 153.

It is desirable that the upper face 54a of the positioning plate 54 of the last 32 shall bear against the planar bottom face 156 of the, jack post 104 and also that the last positioned on the jack post shall be secured to said post so that the operator may release his grip on the work during the automatic cycle of the machine as the heel seat of the shoe is forced against the composite heel 22, 24 on the carriage 66 and the nails are driven into the work.

Accordingly, as the last 32 is being oriented on the last pin 52 of the jack post 104 the bar 172 moves the upper end of said pin to the left (FIG. 3) with relation to; said post causing the cylindrical portion 52a of the pin to be swung counterclockwise about the rear portion of the inwardly extending flange 165 of the post and thus causing the stud portion 52c of the pin to co- "operate with the cylindrical portion of said pin in swinging the last slightly counterclockwise until the face 54a of the positioning plate 54 of the last 32 is forced under substantial pressure against the bottom face156 of the jack post. During the above-mentioned counterclockwise swinging movement of the last 32 the face 153a of the combined back gage and support 153 may yield .rearwardly slightly to permit this movement and cooperates with the last pin in forcing the planar face 54 of the positioning plate '54 of the last with clamping pressure against the bottom planar face 156 of the jack post 104. With'the last 32 thus supported by the combined back gage and support 7153 and biased counterclockwise by the above-mentioned tilting of the last pin operator grasps the shoe 30 and swings the jack post 104 forwardly to its loading and unloading position. When the jack post 104 has been moved away from the slide 235 associated with the switch 242 the piston 188, which is reciprocable in the cylinder 178 is open to the exhaust port 232 with the result that the spring 204 causes the cylinder and the bracket 176 to return to their lowered idle positions shown in FIG. 2 in said post, the spring 210 causes the L-shaped lever 162 to be moved away from the opposing shoulder 62 of the positioning plate 54 of the last 32, and the spring 189, through mechanism above described, causes the last pin to be moved from its projected position shown in FIG. 3 to its retracted positionshown in FIG. 2.

I If desirable a switch (not shown) mounted in a housing (not shown) corresponding to the housing 231 and carried by the jack post 104 may 'be closed by the provision of a plunger 250 (FIG. 12) corresponding to the plunger (856) disclosed in United States Letters Patent No. 2,943,329, granted July 5, 1960, on an application filed in the name of Frank W. Spencer.- The plunger 250 is slidingly mounted in bores 252 of bosses (only one shown) of the jack post 104 and is normally held in its lowered or idle position, in which its lower end projects just beyond the abutment face 156 of the jack post 104, by a spring 254 interposed between one of the bosses of the jack post and a collar 256 secured to said plunger, downward movement of the plunger in the jack post being limited by the engagement of a stop collar 258 fixed to the plunger with said one boss of the jack post. In presenting the work to the jack post 104 modified as just described the operator first causes the undercut lip 64 of the positioning plate 54 of the last 32 to be brought into engagement with the combined back gage and support 153 and thereafter swings the last 32 toward the abutment face 156 of the jack post 104, said positioning platebeing included between the stud or stop 158 and the orienting abutment 16 2. The operator at this time usually swings the jack post 104 rearwardly. When the plunger 250 is engaged by the last upon which the shoe is mounted it is raised against the action of the spring 254 causing a slide 235a, corresponding to the slide 235, to close the switch, which corresponds to the switch 242, with the result that the last pin 52 is movedfrom its retracted position to its projected position on the jack post 104 and then the last is oriented upon said projected last pin and is clamped securely to the jack post as above described.

With a jack post 104 such as disclosed in FIG. 12 it will be appreciated that the post may be retained in its heel attaching position and the work presented to said post in this position, the above described mechanism for positioning and clamping the work on the jack post being responsive to movement of the plunger 250 by the work being presented to said post.

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

1. In a machine for operating upon shoes, a jack post having a face and comprising a last pin mounted for translatory movement on said post between a retracted position in which the pin is masked by said face and a projected position in which the pin projects beyond said face, means for moving the last pin between its retracted and projected positions, means for orienting a last upon said projected last pin, and means for tilting the project- .ed last pin to cause the last oriented on said pin to be clamped securely against said face of the jack post.

2. In a machine for operating upon shoes, a jack post having a face and comprising a last pin mounted upon the .post for translatory movement between a retracted posi- ,tion in which the pin is masked by said face and a projected position in which the pin projects beyond said face, power operated means for moving the pin. on the post between its retracted and projected positions, a latch mounted on the post and adapted to be engaged by the last to hold a portion of said last mounted on the pin against said face of the post, and power operated means for tilting the projected last pin to cause the last on said pin and in engagement with said latch to be power clamped securely against said face of the jack post.

3. In a'machine for operating upon shoes, a jack post having a face and comprising a last pin mounted for movement on the post between a retracted position in which said pin is masked by said face and a projected position in which the pin projects beyond said face, power operated means for moving the pin between its retracted and projected positions on the post, a latch mounted on the post and adapted to be interengaged by a last which bears a shoe, power operated means for orienting the last on the last pin, and power operated means for tilting the projected last pin to cause the oriented last in engagement with the latch to be clamped securely against said face of the jack post.

4. In a machine for operating upon shoes which are mounted on geometrically graded lasts each having a thimble provided with a cylindrical inner face and each having a positioning plate which is provided at its rear end with an undercut lip and which has parallel shoulders arranged equal distances at opposite sides of a vertical median plane of the heel seat of the last, a jack post having an abutment face, a combined back gage and sup port mounted on the post and adapted to be engaged by the lip of the positioning plate of the last presented manually to the machine inorder initially to locate said last lengthwise with relation to the abutment face of the post, members which are mounted on the jack post and are arranged at opposite sides of the abutment face of the post and are adapted initially to locate the last widthwise on said abutment face, a last pin mounted on said post for translatory movement between a retracted position in which the pin is masked by said abutment face of'the post and a projected position in which said pin projects beyond said abutment face and enters the thimble of the last, power operated means for moving the last pin from its retracted to its projected position, power operated means for causing said members to cooperate with the shoulders of the positioning plate of the last to orient said last upon the projected last pin, and power operated means for tilting said projected last pin on said jack post whereby to cause said pin to cooperate with the combined back gage and support in the clamping of the positioning plate of the last securely against the abutment face of the jack post.

5. In a machine for operating upon shoes, a jack post having an abutment face and an aperture which terminates at said face and is defined in part by a flange positioned adjacent to said abutment face, a latch which is carried by the post and is spaced from said face to form a gap adapted to receive a portion of a last and which assists in the positioning of the last lengthwise on said abutment face, abutment members mounted on the jack and adapted to assist in the positioning of the last widthwise on said abutment face, a last pin mounted on the post for translatory movement through the aperture between a retracted position in which the pin is masked by said face and a means for tilting the projected last pin about said flange to cause said pin to cooperate with the latch in the clamping of the last securely against the abutment face of the I jack post.

6 In a machine for operating upon shoes, a jack post having an abutment face and a last pin projecting beyond :said face, a latch arranged adjacent to said abutment face and adapted to interlock with last; upon which a shoe is mounted and which is mounted on said pin, and means ii for swinging the last pin on the jack postand causing it to cooperate'with the latch -in the clamping of the last against the abutment face of the jack post.

'7. In a machine for operating upon shoes, a jack post having an abutment face and a last pin projecting beyond said face, a latch arranged adjacent to said abutment face and adapted to interlock with a last upon which a shoe is mounted and which is mounted on said last pin, power means for orienting the last on said last pin, and meansfor swinging the last pin on the jack post and causing it to cooperate with the latch in the clamping of the last against the abutment face of the jack post.

8. In a machine for operating upon shoes, a jack post having an abutment face and alast pin projecting beyond said face, a latch arranged at one end of said abutment face and adapted to be interengaged by a last which bears a shoe and is mounted on said pin, and power means for swinging the pin on the jack post generally lengthwise of said abutment face to cause it to cooperate with the latch in the clamping of the last against the last pin and the abutment face of the post;

9. In a'machine for operating upon shoes, a jack post having an abutment face and a last pin projecting beyond said face, a latch arranged adjacent to the rear end of said abutment face and adapted to be interengaged by a last which bears a shoe and is mounted upon said pin, and power means for swinging the last pin projecting beyond the abutment face of the jack post away from the latch about an axis lying approximately in and arranged transversely of said abutment face'whereby to cooperate with the latch in the clamping of said last against the lastpin and against the abutment face of the jack post. a

10. In a machine for operating upon shoes, a jack post having an abutment face and comprising a last pin which is movable between a retracted position in which 'it is masked by said face and a projected position in which it extends beyond said'face, power operated means responsive to the movement of a last toward'the abutment face of the jack post for causing the last pin to be moved from its retracted to its projected position, and power operated means operative in timed relation with the aforesaid power operated means for orienting the last upon the last pin and for clamping the oriented last securely against the abutment face of the jack post.

11. In a machine for operating upon shoes, a jack post having an abutment face and comprising a last pin which is movable between a retracted position in which it is masked by said face and a projected position in which it extends beyond said face, power operated means responsive to the placing of a last upon the abutment face of the jack for causing the last pin to move from its retracted to its projected position, and power operated means operative in timed relation with the aforesaid power operated means for tilting the projected last pin upon the jack post.

12,. In a machine for operating upon shoes, a jack post having an'abutment face and comprising a last pin which is movable between a retracted'position in which it is masked by said face and a projected position in which it extends beyond said face, said jack post being movable between a loading and unloading position and a heel attaching position, means for roughly locating upon said abutment face a last bearing a shoe and provided with a thimble, power operated means responsive to the movement of the jack from its loading and unloading position to its heel attaching position for causing the last pin to move from its retracted to its projected position and accordingly to enter the thimble of the last in engagement with the abutment face of the jack post, and power operated means for orienting the last upon the projected last pin and for clamping it securely against the abutment face of the jack post.

13. 'In a machine for operating having an abutment face and comprising a last pin extending from said face, a latch mounted on said post and adapted to be engaged by a last mounted on said pin and ao irgose tobias the last against said abutment face, power oper ated means for orienting the last upon said last pin and power operated means operatively connected to the aforesaid operated means for tilting the last pin to cause it to cooperate with the latch in the clamping of the last securely against said abutment face of said post.

14. In a machine for operating upon shoes, a jack post having an abutment face and comprising a last pin extending from said face, a latch mounted on said post and adapted to be engaged by a last mounted on said pin and to bias the last against said abutment face, and power means for tilting the last pin to cause it to cooperate with the latch in clamping the last securely against said face of the post.

15. In a machine for operating upon shoes, a jack post having an abutment face and comprising a last pin extending fromsaid face, a latch which is yieldably mounted upon said post and is adapted to be engaged by a rear end of a last mounted on said pin and to bias the last against said abutment face, and power means for tilting the last pin away from said latch to cause it to cooperate with the latch in the clamping of the'last against said face of the post. g V a 16. In a machine for operating upon shoes, a jack post having an abutment face andcomprising .a last pin mounted on said post for translatory movement between a retracted position in which the pin is masked by said face and a projected position in which the pin projects beyond said face, a cylinder mounted for translatory movement on the post, a piston slidable in said cylinder, mechanism mounted on said post and operatively connecting the piston to the last pin, a stop mounted on the jack post, and fluid pressure means for moving the piston in said cylinder until such movement is limited by said stop whereby to cause through said mechanism the last pin to move from its retracted to its projected position, said fluid pressure means being effective after the upon shoes, a jack post piston has engaged said stop to move the cylinder in the jack post and thus to cause said mechanism to tilt the last pin on said post. '17. In a machine for operating upon shoes, a jack post having an abutment face and comprising a last pin which is movable between a retracted position in which it is masked by said face and a projected position in which it extends beyond. said face, power operated means for moving the last pin between its retracted and projected positions, and power operated means responsive to the operation of said aforesaid power operated means for orienting the'last upon the projected last pin.

'18. In a machine for operating upon shoes, a jack post having an abutment face, a last pin which is slidable on said post for movement between a retracted position inwhich the, pin is substantially masked by said face and a'projected position in which the pin projects beyond said face, said last pin, when it is in its projected position on saidpost, also being tiltable on the post, a cylinder mounted for translatory movement on the post, spring operated means for constantly urging the cylinder to and holding it in a rest position on said jack post, a piston slidablc in said cylinder, a coil spring mounted in the cylinder between the piston and a portion of the cylinder, a connector which is secured to the piston and is pivotally connected to the last pin, a stop mounted on the jack post, fluid pressure means'operative against the action of said spring and rendered active first to effect movement of the piston in one direction in said cylinder until such movement is limited by the engagement of said connector with the stop whereby to cause the last pin to move from its retracted to its projected position and then to effect, against the action of said spring and the spring operated means, movement of the cylinder with relation to the piston in a direction generally opposite to said one direction of movement of the piston in the cylinder whereby to cause said connector to tilt the projected last pin in one direction on said post and thus to cause a last mounted on the pin to be clamped against the abutment face of the post, said spring operated means, when the fluid pressure means is rendered inactive, being adapted to move the cylinder with relation to the piston in a direction opposite to its first direction of movement and thus to cause said connector to tilt the last pin on said post in a direction reverse to its first direction of tilting movement whereby to release pressure of the last against the abutment face of the post, said spring, when the fluid pressure means is rendered inactive being adapted to move the piston in a direction opposite to its first direction of movement in the cylinder to cause the last pin to be moved from its projected to its retracted position on the jack post.

19. In a machine for operating upon shoes, a jack post having an abutment face and comprising a last pin projecting beyond said face, said last pin having a circular cylindrical face a portion of which is arranged adjacent to and projects a short distance beyond said abutment face, said last pin also having a bearing portion which is spaced a substantial distance from said cylindrical face, substantially the entire area of said circuit cylindrical face being engaged by a wall forming the entrance portion of a thimble hole of a last mounted on the last pin and in engagement with the abutment face, said bearing portion of the pin being engaged by a forward part only of the wall forming the thimble hole of thelast,

and the remaining projecting portion of the last pin being spaced from the Wall of the thirnble hole of the last. 20. In a machine for operating upon shoes, a jack post having an abutment face and comprising a last pin pro-l jecting beyond said face, said last pin having a relatively large circular cylindrical face a portion of which is arranged adjacent to and projects a short distance beyond said abutment face, said last pin also having a relatively small semicircular cylindrical face which is spaced a substantial distance from said portion of the large circular cylindrical face, said cylindrical faces of the pin being arranged about a common axis, substantially the entire areas of said cylindrical faces being engaged by a t-himble of a last positioned on said pin and in engagement with the abutmet face and the remaining projecting portion of said pin being spaced from said thimble.

References Uted in the file of this patent UNITED STATES PATENTS 754,405 Krentler Mar. 8, 1904 1,831,109 Hart Nov. 10, 1931 2,974,335 Frampton Mar. 14, 1961 2,975,443 Makovski Mar. 21, 1961 UNITED STATES PATENT OFFICE CERTIFICATE OF CORRECTION Patent No. 3,044 ,086 July 17, 1962 Adolph S. Dorosz et al.

It is hereby certified that error appears in the above numbered patent requiring correction and that the said Letters Patent should read as corrected below.

Column 10, line '74, after "with" insert a column 11, line 72, for claim "13" read l5 column 12, line 4, after "said" insert power column 12, line 7, for claim "14" read l6 line 15, for claim "15" read 17 line 24, for claim "16" read l8 line 41, for claim 7'17" read 2O line 50, for claim "18" read l9 column 13, line 15, for claim "19" read 13 column 14, line 5, for claim "20" read l4 line 17, for "abutmet" read abutment Signed and sealed this 2nd day of April 1963. (SEAL) Attest:

ESTON G. JOHNSON DAVID L. LADD Attesting Officer Commissioner of Patents

Images