US1740667A - Heel-seat-trimming machine - Google Patents
Heel-seat-trimming machine Download PDFInfo
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- US1740667A US1740667A US306884A US30688428A US1740667A US 1740667 A US1740667 A US 1740667A US 306884 A US306884 A US 306884A US 30688428 A US30688428 A US 30688428A US 1740667 A US1740667 A US 1740667A
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- Prior art keywords
- heel
- cutter
- shoe
- blade
- frame
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- Expired - Lifetime
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- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
- A43D8/32—Working on edges or margins
- A43D8/34—Working on edges or margins by skiving
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43D—MACHINES, TOOLS, EQUIPMENT OR METHODS FOR MANUFACTURING OR REPAIRING FOOTWEAR
- A43D8/00—Machines for cutting, ornamenting, marking or otherwise working up shoe part blanks
- A43D8/46—Splitting
- A43D8/48—Splitting combined with skiving
Definitions
- This invention relates to improvements in cutter to eifect the heel seat trimming or shoe making machinery, and is particularly beveling operation above set forth in a quick, directed to an improved automatic machine effective and economical manner, the maconstructed and adapted for the purpose of chine being provided with a guide arranged trimming the heel seats of shoes preparatory adjacent to the cutter by which the shoe is In to the application thereto of wooden heels. guarded while in engagement with the cutter. lVooden heels are provided, almost invari- Another object resides inthe provision of ably, with concave upper surfaces, known in power promotion means formed in connecthe art as heel seats.
- FIG. 3 is a vertical sectional view taken Q of a manually operated knife or cutter, to through the upper part of the machine, disremove the surplus material from the shoe closing more particularly the cutter, the
- FIG. 4 is a horizontal sectional view and costly and has required the services of taken through the cutter, its guiding and 30 skilled shoe operatives in order to permit of driving mechanism, I
- FIG. 6 is a similar view on the line 6-6 primary object of the present invention to of Figure 3,
- Figure 9 manship and to reduce the costlof this oper-
- Figure 9 is a fragmentary elevational view ation ascompared with the now widely used of a shoe having a preferred heel seat, and hand method.
- Figure 10 is a perspective view of a shoe The invention contemplates the provision and a heel showing the shape of the sole after of a machine of this character provided with it has been trimmed.
- the numeral 1 designates the base or beneath the cutter, and adapted for the restandard of, the heel seat trimming machine ception of a last containing. shoe, the supconstituting the present invention.
- Tliis port or jack being so disposed as to permit standard may beformedfrom any suitable the shoe to be presented to the reciprocating materials and it is preferably of such height that the Operator has control of the operations while occupying a standing position.
- the lower portion of the standard provides an enlarged base 2 adapted to rest upon any desired foundation. Arranged upon the base a clutch collar 6.
- a pulley 7 which is also formed with a complemental clutch collar 8, the latter being spaced from the collar 6 by a leather or other suitable type of clutch disk 9.
- the disk 9 is confined between the collars 6 and 8 and is loosely positioned on the bushing 5. This arrangement is such that when the pulley 7 is forced longitudinally of the bushing so that the disk 9 is placed under compression a frictional clutch relationship is es-.
- a foot pedal 10 which is pivotally mounted as at 11 on the base 2.
- One end of the pedal is connected with a bell crank lever 12 which is pivotally mounted as at 13 on the base 2, and the upper end of such lever carries a screw 14 which engages with the outer end of the pulley 7.
- a spring 15 is employed to automatical: ly eflect disengagement between the collars 6 and'8 and the disk 8, thereby stopping the rotation of the pulley.
- a drive belt 16 Passing around the pulley 7 is a drive belt 16 which is also trained over a second pulley 17 mounted upon one end of a crank shaft 18.
- This shaft is journaled for rotation in connection with bearings-19 mounted upon a bracket 20 projecting from the upper end of the standard 1.
- the standard contiguous to its upper end, is provided with a bearing 21 in which isslidably mounted a rod 22, one end of which rod, i. e., its inner end, is pivotally connected with a 'connectingrod 23 carried by the crank portion 24 of the shaft v18, the arrangement being such that the rotation of the crank shaft effects positively the reciprocation of the rod 22.
- the outer end of the rod 22 is split longitudinally as at 25 for the accommodation of the inner end of a fiat longitudinally extending cutting blade 26.
- a split sleeve 27 Surrounding the split end of the rod 22 is a split sleeve 27 and, as shown in Figure 5, this sleeve is tightened into clamping engagement with the outer end of the rod 22 and the blade 26 by means of a vertical screw 28.
- This screw passes through registering opening formed ed and received within a threaded opening provided in the bottom of the sleeve 27.
- the sleeve 27 also grips the sidesof the blade to prevent lateral twisting and turning movement on the part of said blade, whereby the latter is maintained in rigid longitudinal relationship-with the rod 22.
- the upper end of the standard 1 terminates in a yoke or goose neck 29 which carries, as shown in Figure 6, a horizontally extending guide plate 30, the under surface of which being provided with a groove 31 adapted tion of the yoke 29.
- the spaced guides30 and 32 co-operate with the cutter or blade 26, which is of thin metallic form, to hold the latter confined except for" its required longitudinal reciprocatory movement.
- This jack includes -a vertical screw 36 which is slidably mounted in a plain bore formed ver tically in a stationary hubor bearing 37 projecting from the lower part of the standard 1.
- the screw 36 carries nuts 38, disposed on opposite sides of the bearing 37, nuts being employed for the purpose of controlling vertical operating position of the screw 36.
- the upper end of the screw 36 is provided with a head 39 upon which is pivotally mounted for compound rocking movement a vertically extending post 40.
- the upper end of this post is pivotally connected as at 41 to'a clevis 42 which-in turn, ispivotally connected as at 43 to a jack stud 44. It will be observed that the pivots 41 and 43 have their axes disposed in erpendicular relationship, which admits of exibility in the positioning vided in the connection between the lower end of the post 40 and the screw 36.
- a shoe 45 fitted with an internal last 46 is placed on the stud 44 with the stud positioned in a substantially vertical opening 47 formed in the last.
- the shoe is then manually moved by the operator of the machine so that the edge portions of its heel structure will engage with a disk shaped guide 48 mounted for rotation upon a vertical axis 49, the latter being carried in connection with a bracket plate 50 which has its inner end adjustably connected with a supporting bracket 51.
- This bracket is mounted for vertical adjustment as at 52, in connection with the standard 1 or its removablehead or yoke 29. It will be understood that the adjustment between the bracket members 50 and 51 and the yoke 29 permits the disk 48 to be adjusted advantageously in relation to the cutting blade 26.
- the operator applies the lasted shoe to the stud 44 and places the heel portion of the shoe against the disk guide 48.
- a beveled out or surface 53 will be produced on theheel engaging portion of the shoe sole, which cut or surface will correspond substantially to the concave heel seat of a'wooden heel 54.
- This operation may be carried out quickly, accurately and economically together with uniform workmanship with the result that the operation of trimming heels will not prove so costly as compared with former or prior methods and at the same time increased production per operative employed in this operation is secured.
- the blades or cutters 26 when, worn, broken or'dulled may be readily removed anda new or renewed blade in- I frame and disposed beneath the cutting blade.
- a heel seat trimming machine comprising a frame formed. to include a pair of spaced horizontally disposed guides, a cutting blade slidably mounted in said guides, power driven means connected with said blade for effecting the reciprocation thereof, a sole engaging guide arranged beneath said blade, and an adjustable shoe supporting. jack carried in connection with said 2.
- a sup-' porting frame provided with a pair of spaced bearings, a power driven reciprocatory cutter slidably mounted in connection with said bearings, said blade projecting through.
- a heel seat trimming machine a supporting frame. a yoke shaped cutter head formed with said frame, said cutter head being provided with a pair of longitudinally spaced. horizontally extending bearings, a cutter slidably mounted in connection with said bearings, means for effecting the reciprocationof said cutter, a shoe support adjustably mounted below said cutter, and a sole edge guide disk carried by said frame and arranged immediately below said cutter adjacent to one of said bearings.
- a heel seat trimming machine a supporting frame, a cutter head formed with said frame, a crank shaft rotatably mounted in connection with said frame, a
- cutter holder slidably mounted in bearings I holder slidably'mounted in connection with said bearing for movement in a horizontal plane, a crank shaft journaled for rotation with bearings carried by said standard, means for rotating said crank shaft, a connecting rod between said holder and said crank shaft for reciprocating said holder upon the rotation of said crank shaft, the forward end of said holder being provided with a slot, a frictional clamping sleeve surrounding the slotted end of said holder, a flat cutting blade having the inner end thereof received within the slot provided within said holder and positively retained within said slot by said clampingsleeve, a second bearing formed in connection with said cutter head for the slidable reception of said blade, and an outer bearing adjustably carried by said cutter head for slidably supporting the extreme outer end of said cutter blade.
- a heel seat trimming machine In a heel seat trimming machine, a supporting frame, a cutting blade mounted for reciprocation in said frame and confined to a horizontal plane of movement, a guide disk arranged immediately below said cutting blade, and a pair of relatively adjustable supports for said guide disk for varying the positions of the latter with respect to the cutting blade.
- a heel seat trimming machine In a heel seat trimming machine, a frame, a cutting blade mounted for recipror cation in said frame and confined to a horizontal plane ofinovement, a pair of spaced bearings for said blade, a rotatable disk Y shaped sole engaging guide arranged beneath said blade and having its guiding edge protruding outside one of said bearings for engagementwith the sole edge of the shoe operated upon, and a horizontally adjustable support for said guide disk for varying the position of the latter withrespect to the cuttihg blade.
- a supv porting frame a cutting blade mounted for horizontal reciprocation in said frame, a pair of spaced bearings forsaid blade, the bearings and theframe being formed to provide a work receiving space therebetween through which said blade projects, a guide disk for the sole edge of a shoe adjustably carried in connection with said frame and arranged bc-'- neath said cutting blade adjacent to said work receiving space, and an adjustable connection between one of said bearings and said frame by which the hearing may be moved horizontally to vary the width of said work receiving space.
- a heel seat trimming machine comprising a standard formed with a horizontal bearing near its upper end, a cutter holder slidably mounted in connection with said bearing for movement in a horizontal plane, means for effecting the reciprocation of said holder, a fiat cutting blade carried by said holderand having one end' detachably con- 40 nected therewith, a second bearing carried by said standard for the slidable reception of the extreme outer end of said blade, and a shoe 7 guard arranged immediately below and positioned intermediate the ends of said cutting 5 blade.
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- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Description
Dec. 24, 1929. c, ROGGE T AL 1,740,667
HEEL SEAT TRIMMING MACHINE Filed Sept. 19. 1928 3 Sheets$heet l gwuz'ntow J4 C. 20996 J]? Gordon Dec. -.24, 1929.
A. C..R OG GE ET AL HEEL SEAT TRIMMING MACHINE I Filed Sept. 19. 1928 3 Sheets-Sheet 2 Dec. 24, 1929. A. c. ROGGE ET AL HEEL SEAT TRIMMING MACHINE V .3 Sheets-Sheet 5 Filed Sept. 19. 1928 III I l lll Patented Dec. 24, 1929 1,740,667
UNITED, STATES PATENT OFFICE ALBERT C. ROGGE AND HIRAM GORDON, F COLUMBUS, OH IO nnnn-sna'r-rnmmme monmn Application filed September 19, 1928. Serial 110. 806,884.
This invention relates to improvements in cutter to eifect the heel seat trimming or shoe making machinery, and is particularly beveling operation above set forth in a quick, directed to an improved automatic machine effective and economical manner, the maconstructed and adapted for the purpose of chine being provided with a guide arranged trimming the heel seats of shoes preparatory adjacent to the cutter by which the shoe is In to the application thereto of wooden heels. guarded while in engagement with the cutter. lVooden heels are provided, almost invari- Another object resides inthe provision of ably, with concave upper surfaces, known in power promotion means formed in connecthe art as heel seats. These surfaces are contion with the machine for the purpose of recaved, when 'viewed in vertical section, in ciprocating the cutter, and the provision of 00 order that the outer edges of the heels may be improved means for holding the shoe in opneatly and closely joined to the heel uppers erative relationship with the cutter, and in of shoes. Before the application of the various'other features which will be in art wooden heels, which latter are now widely obvious and in part pointed out hereina er.
used in connection with feminine footwear, For a further understanding of the inven- 66 it is necessary-to trim or bevel the lower heel tion, reference is to be had to thefollowing engaging portions of a pair of shoes so that description and the accompanying drawsuch heel engaging portions will be substanings, wherein: 3 tially convex, when viewed in cross-section, Figure 1 is-a view in front elevation of the to form with the concavity of the heel seats improved heel seat trimming machine com- 7 of wo'oden'heel blanks. Heretofore it has prising the present invention, been customary on the part of shoe manufac- Figure 2 is a side elevation thereof,
O h p or or fitter, by the use Figure 3 is a vertical sectional view taken Q of a manually operated knife or cutter, to through the upper part of the machine, disremove the surplus material from the shoe closing more particularly the cutter, the
' sole having engagement with the heel seat shoe supporting jack, and the drive mechof a heel. This operation, due to its manually anism for the cutter, executed character, has been relatively slow Figure 4 is a horizontal sectional view and costly and has required the services of taken through the cutter, its guiding and 30 skilled shoe operatives in order to permit of driving mechanism, I
proper trimming of the heel and the-registra- Figure 5 is a transverse sectional view on tion thereof with the outer edges of the heel the line 5 -5, of Figure 3, v
seat of aheel blank and, therefore, it is a Figure 6 is a similar view on the line 6-6 primary object of the present invention to of Figure 3,
providean automatic machine for the pur- Figure 7 is a vertical sectional view taken pose of effecting quickly and accurately the through the driving connection,- trimming of the heel'seats of shoes in the Figure 8 is an enlar ed vertical sectional manner aforesaid for the purpose of expeditview taken through a shoe showing its relaing the operation, to provide uniform worktion to the movable knife,
9 manship and to reduce the costlof this oper- Figure 9 is a fragmentary elevational view ation ascompared with the now widely used of a shoe having a preferred heel seat, and hand method. Figure 10 is a perspective view of a shoe The invention contemplates the provision and a heel showing the shape of the sole after of a machine of this character provided with it has been trimmed.
45 a reciprocating cutter together with an im- Referring more particularly to the drawproved adjustable support or jack, arranged ings, the numeral 1 designates the base or beneath the cutter, and adapted for the restandard of, the heel seat trimming machine ception of a last containing. shoe, the supconstituting the present invention. Tliis port or jack being so disposed as to permit standard may beformedfrom any suitable the shoe to be presented to the reciprocating materials and it is preferably of such height that the Operator has control of the operations while occupying a standing position. The lower portion of the standard provides an enlarged base 2 adapted to rest upon any desired foundation. Arranged upon the base a clutch collar 6. Loosely mounted upon the bushing is a pulley 7 which is also formed with a complemental clutch collar 8, the latter being spaced from the collar 6 by a leather or other suitable type of clutch disk 9. The disk 9 is confined between the collars 6 and 8 and is loosely positioned on the bushing 5. This arrangement is such that when the pulley 7 is forced longitudinally of the bushing so that the disk 9 is placed under compression a frictional clutch relationship is es-.
tablished permittingof the rotation of the pulley 7 substantially in unison withthe motor shaft 4. v
To control the operation of the pulley 7 there is provided a foot pedal 10 which is pivotally mounted as at 11 on the base 2. One end of the pedal is connected with a bell crank lever 12 which is pivotally mounted as at 13 on the base 2, and the upper end of such lever carries a screw 14 which engages with the outer end of the pulley 7. It will be seen that by pressing downwardly upon the pedal 10 the lever 12 will be rocked so as to forcethe collars 6 and 8 into clamping engagement with the disk 9 to rotate the pulley 7. When the foot' pedal is released a spring 15 is employed to automatical: ly eflect disengagement between the collars 6 and'8 and the disk 8, thereby stopping the rotation of the pulley.
Passing around the pulley 7 is a drive belt 16 which is also trained over a second pulley 17 mounted upon one end of a crank shaft 18.
.This shaft is journaled for rotation in connection with bearings-19 mounted upon a bracket 20 projecting from the upper end of the standard 1. The standard 1, contiguous to its upper end, is provided with a bearing 21 in which isslidably mounted a rod 22, one end of which rod, i. e., its inner end, is pivotally connected with a 'connectingrod 23 carried by the crank portion 24 of the shaft v18, the arrangement being such that the rotation of the crank shaft effects positively the reciprocation of the rod 22.
- The outer end of the rod 22 is split longitudinally as at 25 for the accommodation of the inner end of a fiat longitudinally extending cutting blade 26. Surrounding the split end of the rod 22 is a split sleeve 27 and, as shown in Figure 5, this sleeve is tightened into clamping engagement with the outer end of the rod 22 and the blade 26 by means of a vertical screw 28. This screw passes through registering opening formed ed and received within a threaded opening provided in the bottom of the sleeve 27. By tightening the screw 28 frictional pressure will be exerted onthe blade and positively hold the latter in connection with the reciprocating rod 22. The sleeve 27 also grips the sidesof the blade to prevent lateral twisting and turning movement on the part of said blade, whereby the latter is maintained in rigid longitudinal relationship-with the rod 22.
The upper end of the standard 1 terminates in a yoke or goose neck 29 which carries, as shown in Figure 6, a horizontally extending guide plate 30, the under surface of which being provided with a groove 31 adapted tion of the yoke 29. It will thus be seen that the spaced guides30 and 32 co-operate with the cutter or blade 26, which is of thin metallic form, to hold the latter confined except for" its required longitudinal reciprocatory movement. By thus limiting the plane of operation of the cutter the machine may be very readily adapted to the operation of-trimming heel seats. 1
In order to support the shoe in connection with the machine and to permit of the proper presentation of the heel seat' to the cutter, I
there is provided a supporting jack 35. This jack includes -a vertical screw 36 which is slidably mounted in a plain bore formed ver tically in a stationary hubor bearing 37 projecting from the lower part of the standard 1. The screw 36 carries nuts 38, disposed on opposite sides of the bearing 37, nuts being employed for the purpose of controlling vertical operating position of the screw 36. The upper end of the screw 36 is provided with a head 39 upon which is pivotally mounted for compound rocking movement a vertically extending post 40. The upper end of this post is pivotally connected as at 41 to'a clevis 42 which-in turn, ispivotally connected as at 43 to a jack stud 44. It will be observed that the pivots 41 and 43 have their axes disposed in erpendicular relationship, which admits of exibility in the positioning vided in the connection between the lower end of the post 40 and the screw 36.
In operation, a shoe 45 fitted with an internal last 46 is placed on the stud 44 with the stud positioned in a substantially vertical opening 47 formed in the last. The shoe is then manually moved by the operator of the machine so that the edge portions of its heel structure will engage with a disk shaped guide 48 mounted for rotation upon a vertical axis 49, the latter being carried in connection with a bracket plate 50 which has its inner end adjustably connected with a supporting bracket 51. This bracket, in' turn, is mounted for vertical adjustment as at 52, in connection with the standard 1 or its removablehead or yoke 29. It will be understood that the adjustment between the bracket members 50 and 51 and the yoke 29 permits the disk 48 to be adjusted advantageously in relation to the cutting blade 26.
The operator applies the lasted shoe to the stud 44 and places the heel portion of the shoe against the disk guide 48. By then rotating the shoe about the axis of the stud 44, while the heel is maintained in engagement with the guide 48, a beveled out or surface 53 will be produced on theheel engaging portion of the shoe sole, which cut or surface will correspond substantially to the concave heel seat of a'wooden heel 54. This operation may be carried out quickly, accurately and economically together with uniform workmanship with the result that the operation of trimming heels will not prove so costly as compared with former or prior methods and at the same time increased production per operative employed in this operation is secured. The blades or cutters 26 when, worn, broken or'dulled may be readily removed anda new or renewed blade in- I frame and disposed beneath the cutting blade.
serted. Furthermore, adjustments provided both in the supporting jack and for the guide member'48 permitshoes of varying styles and size to be readily adapted to the machine.
\ lVhat is claimed is:
1. A heel seat trimming machine comprising a frame formed. to include a pair of spaced horizontally disposed guides, a cutting blade slidably mounted in said guides, power driven means connected with said blade for effecting the reciprocation thereof, a sole engaging guide arranged beneath said blade, and an adjustable shoe supporting. jack carried in connection with said 2. Ina heel seat trimming machine, a sup-' porting frame provided with a pair of spaced bearings, a power driven reciprocatory cutter slidably mounted in connection with said bearings, said blade projecting through. a
work-receiving space provided in said frame between said bearings, a sole guide adjustably carried in connection with said frame and arranged beneath said cutter adjacent to said work-receiving space, and a shoe supporting jack mounted for universal movement in connection with said frame below said cutter-and in registration with said a space.
3. In a heel seat trimming machine, a supporting frame. a yoke shaped cutter head formed with said frame, said cutter head being provided with a pair of longitudinally spaced. horizontally extending bearings, a cutter slidably mounted in connection with said bearings, means for effecting the reciprocationof said cutter, a shoe support adjustably mounted below said cutter, and a sole edge guide disk carried by said frame and arranged immediately below said cutter adjacent to one of said bearings.
4. In a heel seat trimming machine, a supporting frame, a cutter head formed with said frame, a crank shaft rotatably mounted in connection with said frame, a
cutter holder slidably mounted in bearings I holder slidably'mounted in connection with said bearing for movement in a horizontal plane, a crank shaft journaled for rotation with bearings carried by said standard, means for rotating said crank shaft, a connecting rod between said holder and said crank shaft for reciprocating said holder upon the rotation of said crank shaft, the forward end of said holder being provided with a slot, a frictional clamping sleeve surrounding the slotted end of said holder, a flat cutting blade having the inner end thereof received within the slot provided within said holder and positively retained within said slot by said clampingsleeve, a second bearing formed in connection with said cutter head for the slidable reception of said blade, and an outer bearing adjustably carried by said cutter head for slidably supporting the extreme outer end of said cutter blade.
' 6. In a heel seat trimming machine, a supporting frame, a cutting blade mounted for reciprocation in said frame and confined to a horizontal plane of movement, a guide disk arranged immediately below said cutting blade, and a pair of relatively adjustable supports for said guide disk for varying the positions of the latter with respect to the cutting blade. a 7. In a heel seat trimming machine, a frame, a cutting blade mounted for recipror cation in said frame and confined to a horizontal plane ofinovement, a pair of spaced bearings for said blade, a rotatable disk Y shaped sole engaging guide arranged beneath said blade and having its guiding edge protruding outside one of said bearings for engagementwith the sole edge of the shoe operated upon, and a horizontally adjustable support for said guide disk for varying the position of the latter withrespect to the cuttihg blade.
8. In a heel seat trimming machine, a supv porting frame, a cutting blade mounted for horizontal reciprocation in said frame, a pair of spaced bearings forsaid blade, the bearings and theframe being formed to provide a work receiving space therebetween through which said blade projects, a guide disk for the sole edge of a shoe adjustably carried in connection with said frame and arranged bc-'- neath said cutting blade adjacent to said work receiving space, and an adjustable connection between one of said bearings and said frame by which the hearing may be moved horizontally to vary the width of said work receiving space. v
9. A heel seat trimming machine, comprising a standard formed with a horizontal bearing near its upper end, a cutter holder slidably mounted in connection with said bearing for movement in a horizontal plane, means for effecting the reciprocation of said holder, a fiat cutting blade carried by said holderand having one end' detachably con- 40 nected therewith, a second bearing carried by said standard for the slidable reception of the extreme outer end of said blade, and a shoe 7 guard arranged immediately below and positioned intermediate the ends of said cutting 5 blade.
In testimony. whereof we aflix our signatures.
ALBERT c. ROGGE. HIRAM GORDON. A
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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US306884A US1740667A (en) | 1928-09-19 | 1928-09-19 | Heel-seat-trimming machine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US306884A US1740667A (en) | 1928-09-19 | 1928-09-19 | Heel-seat-trimming machine |
Publications (1)
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US1740667A true US1740667A (en) | 1929-12-24 |
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US306884A Expired - Lifetime US1740667A (en) | 1928-09-19 | 1928-09-19 | Heel-seat-trimming machine |
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1928
- 1928-09-19 US US306884A patent/US1740667A/en not_active Expired - Lifetime
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