US2099042A

US2099042A - Lip turning machine

Info

Publication number: US2099042A
Application number: US73125A
Authority: US
Inventors: John M Whelton
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1936-04-07
Filing date: 1936-04-07
Publication date: 1937-11-16
Anticipated expiration: 1954-11-16

Description

Nov. 16, 1937. J. M. WHELTON LIP TURNING MACHINE Filed April 7, 1936 2 Sheets-Sheet l //\/l/EN 727/? Nov. 16, 1937. J. M. WHELTO N LIP TURNING MACHINE Filed April 7, 1956 2 Sheets-Sheet 2 Patented Nov. 16, 1937 UNITED STATES PATENT OFFICE 2,099,042 LIP TURNING MACHINE Application April 7, 1936, Serial No. 73,125

8 Claims.

This invention relates to lip turning or channel opening machines and is herein disclosed as embodied in a machine adapted to operate upon channeled outsoles of shoes from which the lasts 1 have been removed. The invention, however, is by no means limited to use in connection with this type of work, being applicable to operations upon unattached insoles or outsoles, or upon outsoles attached to shoes from which the lasts have.

not yet been withdrawn. The illustrated machine is particularly useful in operations upon McKay sewed shoes and all other types of through-and- .through stitched shoes, for example Littleway shoes. It enables the lip-turning operation to be delayed until immediately before the stitching and after the removal of the last, thereby avoiding any danger of closing or otherwise dis- ...turbing the turned lip when the last is removed. It is an object of the invention to provide an improved channel opening machine. In the illustrated machine the shoe is supported internally upon a horn, while a plow operates to raise the channel lip and another tool sets the lip. In I accordance with a feature of the invention means are provided for operating the plow and the lipsetting tool to feed the work.

The above and other features of the invention will become more fully evident from the description which now follows of an illustrative machine embodying the invention.

Referring to the drawings,

Fig. 1 is a perspective View of the improved machine;

Fig. 2 is a plan view of the same machine;

Fig. 3 is a view in side elevation of the upper portion of the machine;

-Fig. 4 is a View in side elevation of the workengaging instrumentalities; and

Fig. 5 is a plan view of the work-engaging instrumentalities.

The supporting structure of the machine comprises a frame In adapted to be secured upon a work bench. The work-engaging members comprise a plow l2 which operates to raise to upstanding position a channel lip formed on a sole, and a presser I4 which operates to complete the turning of the channel lip. The plow l2 and the presser M are driven in such a manner not only as to perform their respective functions, but also to cooperate in feeding the work. In order that the machine may be used to operate upon outv soles of completed shoes there is provided a support in the form of a horn l6 adapted to extend ries at its upper end a small, freely rotatable button 18 which supports the sole from the interior while the operation is being performed.

The horn 16 has a depending cylindrical shank portion 20 whereby the horn is clamped forheightwise adjustment in a split lug 22 extend- .ing from a block 24. A clamping screw having a handle 26 operates to tighten or loosen the clamping pressure upon the cylindrical portion 20. The block 24 is clamped upon a vertically disposed pivot pin 28 the opposite end portions of which are mounted for free turning and sliding' movement in bearings formed in upper and lower shelf-like extending

portions

30 and 32, respectively, of the frame In. The pin 28 is subt-J stantially coaxial with the button l8, which arrangement enables the horn l6 to be turned as may be necessary in manipulating the shoe without varying the position of the button [8 relatively to the tools l2 and I4. The horn l6 nOI'j-r mally occupies a position somewhat below the operating tools to enable a shoe to be placed over the horn or to be removed therefrom. In order to raise the horn into operating position there is provided a treadle mechanism comprise. ing a treadle bar 34 fulcrumed upon a pin 36 supported in a member 38 which is adapted to be secured to the floor. Extending upwardly from the treadle bar is a rod 40 pivotally connected at its upper end to one arm of a bell crank, lever 42 which is fulcrumed upon a pin 44 secured in a lug 46 extending from the frame Ill. The other arm of the bell crank 42 is pivotally connected by a pin 41 to one end of a link 48, the opposite end of which link is pivotally con'. nected to one end of a lever 50. The lever 50 is fulcrumed upon a pin 52 secured in a lug 54 which extends from the frame It. The opposite end of the lever 50 is bifurcated and comprises a pair of ears 56 disposed on opposite sides of? the pin 28 and adapted to bear against the lower surface of the block 24. A spring 51 normally holds the treadle up. Depression of the treadle bar-34 will raise the horn IE to its operating position. While a special stop member may be employed to limit downward movement of the treadle, it will ordinarily be satisfactory to rely upon the floor itself as a treadle stop. The horn l6 should be adjusted to the desired height in the lug 22 when the treadle is down in its stop position. The lever 42, link 48 and lever 50 are so arranged as to maintain the pin 4! always on the same side of the line joining the centers of the

pins

44 and 52.

The supporting and driving mechanism of the hold the block and thereby the too1tI2 down; :The

operating tools I2 and I4 will now be described. The tool I2 has formed in it a slot. 58 through which extends a bolt 60 whereby the tool I2 may be clamped in any desired position of horizontal adjustment in a lever 62. The lever 62 has formed in it a horizontal 'guideway in which the shank portion of the tool I2 is slidably mounted for purposes of such adjustment. The, opposite end of the'lever 62: carries a pin 54 throughwhich movement is communicated from an arm 66 to the lever 62. The central portion of the lever 62 has formed in it an opening 68 across which extends a trunnion pin 70 constitutingl-a.floating fulcrum for the lever 02. The opening 68 extends around a box l2 within which is:formed'avertical slideway for a block l4 throughwhich' extends the trunnion pin I0. A cover plate 16 is provided for the box 12. A compression spring 181; interposed between the under surface of, the plate I8 and the upper surface of the block "I4 tends to box I2 .is mounted for --free .turning movement upon a' vertical pin 80 which 'issecurecl in a;

. bracket 82 bolted to. the frame I0.

":;.which .extends thepin 64; The .arm 66 extends mfrorn asleeve 84 whichris freely rotatable upon apin fifisupportedin suitable bearings88 formed in the frame IiL. 'Another arm .90 extends down-.

IJWardIY fI'Om the sleeve 84 and carries a camroll 92. Theroll 92 engagesaslot 94 formed in a facercarn 96 whichis secured upon a shaft 98 journaled in. bearings? I formed in .the frame- The shaft Bil-carriesapulley I02 whereby the shaft 98 .may be: driven from any suitable sourceiof power.

.jyiExtending' rearwardly :fromz;the::box :12 .is an :arm 94 which carries alcamcroll llifigextending :into ajslot we. formed in a cylindrical orbarrel' scam. i'lagwhich .is mountedupomthe. shaft 98.

Itis evident that as-theshaft 98 rotates the'icam I rolL 95:3 will impart a'horizontal .oscillationitothe of; the pin 80. while thegcam roll 92 :will; impart a .verticalnoscillation to the lever IiLthe effect of whichupon the tool I2 willlater be described.

arm=l i4. 1 Eulcrumedupon apim IJBScarried in -1- the upper; end:of thesarm? I .I4;is.a-lever I I8.having a depending: lug I 20. throughiwhich the; pin- I I6 :extends; The tool 14 ds slidably: mounted: for 1 horizontal adjustment in a..guideway formed in the end of the leverzI I8. A clamping. bolt; I22

extending through a horizontal slot-: I24 in: the

tool .l lsecures the tool to the lever .inria desired positionof horizontal adjustmentsrflhe rear end .of the-lever M83 is pivotally connected by means:

of a pin I25 to a rod; I28, the lower. endzof which rod is freely slidable throughla diametrical opening in a pin I30. A compression spring; I32 sur-.

.zrounding. the rod.I28 is interposed between a shoulder. I33 on the upper portionxof therod I28 and thepin 430.

...rod I28 and securedv thereupon .bya lock nut I36 ..adjustably limits the expansion ofthe spring I28.v

and prevents theend oftherrod I28 from sliding through the-openinginthe pin- I30. -The pin I30 is carriedv in theendxof an arm I38 which extends from a sleeve I46 freely rotatable: upon thepin- 1 85. 1 An extension I42 from the arm; I38 carriesa :cam roll I44 whichv engages a cam: slot I46 formed in a face cam I48 mounted upon the: .shaft 98.

.Theiarm Bthas formed in it a slot 61 in v @which is slidab-ly mountedia block 69: through A nut. I34 threaded upon the Integral with the bar H4 is an extension I50 which carries a cam roll I52 engaging a slot I54 formed in a face cam I56 mounted upon the shaft 98. It will be observed that as the shaft 98 rotates the cam roll I52 will oscillate the bar I i4 about the axis of the pin I I 2 which will cause an oscillation in an in-and-out direction of the tool I4 while at the same time the cam roll I 44 will oscillate the lever I I8 aboutrthe: pin I I6 and thereby impart to the tool 54 vertical oscillation.

In operating the machine a shoe having an outsole O and an upper U is mounted upon the i" button J8 with the horn I6 extending within the ,upper ofthe, shoe.. The outsole O has formed r'upo'n'it'a lipL which is to be raised by the majchine.v The lip L is first engaged by the plow l2 which raises. the lip to upstanding position, whereupon the lip is turned over away from the marginof the sole and is pressed downwardly by the tool I4 as the work advances. The oscillatory movements of the :lever 52. are such as .to' cause the plow I2 to. bear downwardly .in .gripping engagementwith the base of: thechannelformed on .the cutsole and to feed thesolewhile so gripping it. Theabase of thechannelisthatportion of the sole which, before, the lipli israised, .1 liesdirectly under the lip L. At the termination of the feeding movement the gripping pressure is released, andv the plow is retractedwhilethesole is heldstationary by the vpress'er I4. .Iti is inthe .course of its. retraction or;back-.feed:movement that the plow operates to raise the lip The gripping pressure of. the plowis obtained by upward movement of the'pin 6.4..derived from the cam 96, :Which iu-pward movement: compresses the. spring l8 ,as the lever 52 fulcrums about'zthe locality of engagement of the plow I2. withsthe work.. The release, .orsubstantial release, ofthis pressure is obtained by downward movement of the pin 64. :The vertical movement of the plow t2:

- 2 where itengages they work -piece..is slight, .being equivalent to. the extent to which: the. material is p compressed. 'The plow. IZyduring itsiback-feed ralever [52..and thence touthe tool I2.about the axis movement, drags along the surface of the work piece.-":..Theyielding ofethe spring I8 notonlyaccommodates locaLvariations oftthickness in the'same work pieces but alsorenders unnecessary:a.-;change in'thezheightwise adjustment of the horn I6 for work pieces which: differsomewhat in thickness. J

As the plow I2.approaches the end of its feed ingmovement, the presser i4 moves'outwardly with respect to the machine or inwardly-and transversely with respect to the sole,. at thesame rtimei moving; downwardly to clamp thev sole against the button IS.' .The plow l2 pauses at the .1 1 end .of its feed stroke,.maintaining its .pressure against the work until the presser 14 has arrived atxclamping position: The presser as operates to hold the sole clamped during the retraction or .back-feedrmovementof the plow I2.. At the end of itsback-feed movement theplow [2 again :comes .to rest, maintaining its: pressure against the work; until the pressure I4 releases its ;clamping pressure andibegins its movement of retra .tion. The presserMcompletes its'retraction and begins its advance while: the plow I21is=feeding the work. The presser 514 is. provided: with an overhanging extension I58 the under: surface of which bears upon the upturned lip:L' and exerts :a wiping or ironing action upon the lip to press the lipflat, as. shown in Fig. 4. The vertical M movement of the presser I4 :is greater thanthe verticalmovement of the plow IZLl The: spring I 32 accommodates variations inthickness of the workpiece. Those portions of the surfaces of the plow I2 and the presser I4 which engage the margin of the outsole are preferably roughened to increase their gripping characteristics.

It will be observed that the plow l2 operates as a feed foot in its advancing movement and as a plow to raise the channel lip in its backfeed movement while the presser I58 operates both as a pressure foot to hold the work during the back-feed of the plow l2 and also as a pressing or ironing member to set the lip L. Figures 4 and 5 show the plow 12 at the end of its feeding stroke and just about to release the work from its gripping pressure while the presser I4 is at the end of its outward and downward stroke and is just clamping the work stationary.

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

l. A channel opening machine comprising a horn adapted to support internally the sole of a shoe, a plow for raising a channel lip formed on the sole, a tool for setting the lip, and means for operating said plow and said lip-setting tool to feed the work.

2. In a channel opening machine, a plow for raising a channel lip formed on a sole, said plow being constructed and arranged for heightwise movement relatively to the sole and also for movement along the line of feed, means for oscillating said plow along the line of feed, and means for pressing said plow against the base of the channel during each advance of the plow to feed the work and for relieving the pressure of the plow during each retraction of the plow.

3. In a channel opening machine, a pair of tools constructed and arranged respectively to raise a channel lip formed on a sole of a shoe and to set the lip in open position, a horn adapted to extend within the shoe for supporting the sole, means for imparting an oscillatory feeding movement to said lip-raising member to cause said lipraising member in its advance movements to feed the sole, and means for operating said lip-setting tool to set the lip in open position andduring the back-feed movements of said lip-raising member torhold the sole clamped against said horn.

4. In a channel opening machine, a feed member engageable with the base of a channel formed on a sole, said feed member being mounted for heightwise movement relatively to the sole, means for oscillating said feed member along the line of feed, and means operable without substantial heightwise movement of said feed member at the locality of engagement between the feed member and the sole, to press said feed member against the sole during each feeding movement ber engageable with the base of a channel formed on a sole, a support for said feed member constructed and arranged for oscillatory movement of said feed member along the line of feed, a floating fulcrum for said support, means acting upon said support to swing said support about said fulcrum in a direction to cause said feed member to press against the base of the channel during the advance movements of the feed member, and resilient means for yieldably supporting said floating fulcrum and for maintaining said feed member against the base of the channel upon release of feeding pressure.

6. In a channel opening machine, a feed foot engageable with the base of a channel formed on a sole, a lever upon which said feed foot is carried, a spring-yieldable fulcrum for said lever, means for relatively swinging said lever about said fulcrum to cause said feed foot, as said fulcrum yields, to press against the channel base, a support for said fulcrum pivotally mounted to enable said feed foot to move in the line of feed, and means operating upon said fulcrum support to cause oscillation of said feed foot along the line of feed, said swinging means being oscillatory and operating to press the feed foot against the channel base during the advance of the feed foot and to release the pressure of the feed foot during retraction.

7. In a channel opening machine, a lip-raising tool, a lip-setting tool, means for oscillating said lip-raising tool in the line of feed of the work, a cam mechanism to which said lip-raising tool is connected, said cam mechanism being constructed and arranged to cause the lip-raising tool to press against the work during its advancing movements to feed the work and to release its pressure against the work during its back-feed movements, and means for operating said lip-setting tool to set the lip and to hold the work stationary during the back-feed of the lip-raising tool.

8. In a channel opening machine, a lip-raising tool, a lip-setting tool, four driven cams, mechanism operated by one of said cams for oscillating said lip-raising tool in the line of feed of the work, mechanism operated by another of said cams for causing said lip-raising tool to press against the work during its advancing movements to feed the work and to release its pressure against the work during its back feed movements, mechanism operated by another of said cams for oscillating said lip-setting tool transversely of the line of feed to wipe the upturned lip inwardly from the margin of the sole, and mechanism operated by the remaining cam for oscillating said lip-setting tool in a heightwise direction relatively to the work to set the lip and to hold the sole stationary by clamping pressure during the back-feed movement of said lip-raising tool.

JOHN M. WHELTON.

. CERTIFICATE OF CORRECTION. Patent I\To.. 2,099,0h2. November l6, 1957.

JOHN M., wHELToN.

It is hereby certified that error appears in the printed specification of the above numbered patent requiring correction as follows: Page 2, second column, line 61;, and page 5, first column, line 9, for the word "pressure" read presser; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Office.

Signed and sealed this 22nd day of February; A D. 1958.

Henry Van Arsdal e, (Seal) Acting Commissioner of Patents.