US2378153A

US2378153A - Prewelt lasting machine

Info

Publication number: US2378153A
Application number: US511393A
Authority: US
Inventors: Natanson Michael
Original assignee: Compo Shoe Machinery Corp
Current assignee: Compo Shoe Machinery Corp
Priority date: 1943-11-23
Filing date: 1943-11-23
Publication date: 1945-06-12
Anticipated expiration: 1962-06-12

Description

June l2, 1945. M. lSlAl-ANSON PRE-WELT LASTING MACHINE Filed NOV. 25, 1943 4 Sheets-Sheet l June l2, 1945. 'M NATAN'SON PRE-WELT LASTING MACHINE 4 Sheets-SheetB Filed Nov. 23, 1943 June 12, 1,945. M, NATANSON 2,378,153

PRE-WELT LASTING MACHINE Filed Nov. 25, 1943 4 Sheets-Sheet 3 Inveor, Molzaeazmsm June 12, 1945. M. NATANsoN PREWELT LASTING MACHINE Filed Nov. 25, 1943 4 Sheets-Sheet 4 .Patented June 12, 1945 UNITED STATES PATENT f 'OFFICE i V2,378,153 l v l vPmivvliL'r'LAstrlNd MACHINE y Michael Natanson, Dorchester, Mass., assg'norto Compo Shoe Machinery lCorporation, Boston ,Mass., `a corporation of Delaware Application November 23, 1943, Serial N 0.511,39?, zolclaims. (olf. 12-1') 'This invention relates to machinesfor use in the 'manufacture Vof shoes and more particularly to avmachine for lasting prewelted shoe 4uppers Iand the adhesive attachment of loutsoles thereto.

In the manufacture `of prewelt :shoes it is customary to last the upper to Van insole-and subsequently `attach an outsole thereto with asu-itable adhesive. This requires handling the shoe twice andif the sole is attached While the shoe is held in thelasting machinel production perobjects ofthe invention reference should be yhad j to the following detailedl descriptiontaken in connection with the accompanying drawings in which: y

Fig. 1 is a side elevation of a :shoe lasting machine embodying this invention;

` Fig. 2 is a plan view looking downwardly upon the machine of Fig. 1, with'a portion atone side of the machine omitted;` Y

Fig. 3' is sectional I: view. taken substantially along lines 3-3 of Fig. Zsbut showing the shoe holding carriage advanced; j

Fig. 4 is an end elevation o'f themachine, partvly in section and having some parts broken away ;v

Fig. 5 is a section'through the forepart of a shoe illustrating the'application of the lasting wheels and the outsole pressing rollers, and

Fig. 6 is a section similar to Fig. 5 but taken through the shank portion of the shoe.

The embodiment of the invention illustrated isa lasting machine having theL base I!!Y through which the rotary shaft II extends The shaft II has the pinion gear I2 keyed thereto and which Yengages with the rack I 3 which is attached to the bottom of the movable carriage IAL The hand wheel I5 is attached to the shaft II and serves shaft I9, the threads of whicnengage the threads of an internally threaded bore in the upright Lis' member 1'Ii6 .of the carriage .I f4. f The 'heel supporting 'carriage I'B has the 'upright member '2li' to which ist-attached the heel lasting' plate '2| The ,hand wheel 22 is attached to the shaft i9 and serves to .rotate same `for moving the heelv last ing plate 2l forwardfor compensating forrdi'f- 'to prevent undue pressure "on the stitches when the heel lasting plate 2|' is 'moved by rotation fof the kliand'wheel 22, into the the welt crease at the the heel end of the shoe; The screw 25 which'is threaded inone lside of the upright lmember 2i) contacts Athe rod -24 and holds the 'stop 2-3 fixed `when properly positioned.

The side 4lasting isprovided by the wheels 2-,6 which are tapered soasto have their edges thin at their peripheries so as to fit in the weltycrease and which are rotatably mounted in the blocks 2l ,which are-swivel'edin the inner ends of the arms 28 The outer ends `'of the armsv 28 are 'attaclred bythe pivot pins 34 to the vertical shafts 29 which are -mounted .for rotation inthesupporting brackets 30.` rLhe armsV 3| are attached to the upperends of the shafts 29 andare drilled 'and tapped to receive the screwsv 32 to the inner ends ofwhich 'are attached the spring 33 which ward movement aboutthe pivotv pins 34 and arel urged upwardly-bythe compression'springs 35, l

the innerends-of which contact the lower ends of the extensions 36 on the arms 28, and which extend in bores inv` the'shafts 29,1 and the tension of `which' is adjustable by the screws 3'! which are' threaded in the shafts 29.v vThe screws 38 which are threaded inthe upper ends of the extensions 36 and which contact the shaftsl 29,.serve as adjustablestops for limitingthe upward movement of the arms 28V and the wheels 265 The lasting wheels 26' through being rotatably 'mounted-with the shafts 29 andthrough being pivoted for yup and downmovement are free to follow the contours of thevlast and to exert a con- The two sole laying pressure rolls 39 have a resilient covering I0 and are rotably mounted on the shafts 40 which have threaded outerends which extend through bores in the arms 4I and are attached to the arms 4I by the nuts 42. The arms 4l are pivoted to the extensions 43 of the brackets 39 which support the shafts 29, by the pivot pins 44. The tension springs 45 have their upper ends attached to the screws 4Bwhich are threaded into the arms 4l and have their lower ends attached to the screws 4l which are threaded into the base IU, the tension of these springs being adjustable by positioning the

screws

45 and 41. The springs 45 thus urge the arms 4I and the pressure rolls 39 downwardly and provide the sole laying pressure as will be described. The set screws 48 are threaded into the arms 4I and their lower ends contact the cam bar 49 and serve to position the pressure rolls 39, at the start of the ysole pressing operation.

The arms 50 have their outer ends pivoted to the inner ends of the arms 4I by the pivot pins 5I and have attached to their inner ends, the fingers 52 which serve to hold an outsole 53 clear of the eementedwelt 54 of a shoe at the start of the lasting and sole pressing operation as illustrated by Fig. 1. At the conclusion of the lasting and sole pressing operation, the arms 59 with the fingers 52 are swung upwardly out of the way by the operator of the machine as illustrated by Fig. 3 so that the lasted shoe may be removed from, and another shoe may be placed in, the machine.

In operation, the operator places a last, and having assembled thereon, a conventional insole 5B and upper 55, in position with the welt pulled up over the toe lasting plate I'I and the lasting wheels 29 as illustrated by Fig. l. He then moves the heel lasting plate 2l inwardly by rotation of the hand wheel 22 and lasts by the plates I'I and 2 I, the upper at the toe and the heel respectively. He then drops in a conventional filler 'II (Figs. 5 and 6) and moves the arms 5D and the separator fingers 52 downwardly and places an outsole 53 in position under the pressure rolls 39 at the toe end of the shoe and over the separator fingers 52 as illustrated byFig. l. Prior to this an adhesive has been applied to the lower surface of the outsole and the upper surface of the welt. He then rotates the hand wheel I5 which moves the carriage I4 forward by means of the pinion l2 and the rack I3. As the carriage and the shoe move forward the lasting wheels 2B follow in the welt crease andgpull the upper upward and inward over the last. When the forward movement has started, the screws 48 clear the cam bar 49 and the pressure rolls 39 are thereby released to press the outsole against the welt. The separator iingers 52 space the outsole from the welt in advance of the pressure rolls so that the portions to which adhesive has been applied do not contact in advance of the application of the pressure rolls.

The carriage I4 is moved forward to the full extent of the shoe until the forward end of the threaded shaft I9 contacts the adjustable stop screw 58 which has been preset to bring the lasting wheels 2B and the pressure rolls 39 to the heel end of the shoe. The operator then moves the fingers 52 upwardly out of the way and reverses the direction of rotation-of the hand wheel l5 bringing the carriage I4 back to its initial position against the stops 59, thus repeating the lasting and sole pressing operations. He then retracts by the hand wheel 22, the heel supporting carriage I8 which removes the heel lasting plate 2l from the shoe which is then removed.

The position of the forward end of the threaded shaft I9 is determined by the sizeof the shoe being lasted and the contact of the forward end ofthe s hait I9 with the stop screw 59 limits the forward movement of the carriage i4, thus automatically limiting the length of travel of the carriage to the size of the shoe being lasted.

The sole pressure rolls 39 as illustrated by Figs. 5 and 6 are closely spaced and together are at least as wide as the outsole of any shoe to be worked upon so that pressure is exerted over the entire surface of the outsole.

While one embodiment of the invention has been described for the purpose of illustration, it should be understood that the invention is not limited to the exact apparatus and arrangement of apparatus illustrated as modiiications thereof may be suggested by those skilled in the art without departure from the essence of the invention.

What is claimed is:

l. A lasting machine comprising opposed means for working opposite sides of a shoe upper over a last, a pair of substantially axially aligned, closely spaced, rolls having a combined width not substantially less than the width of an outsole for pressing said outsole against said upper, and means for moving said upper, said last and said outsole past said opposed means and said rolls.

2. A lasting machine comprising opposed means for working opposite sides of a shoe upper over a last, a pair of substantially axially aligned, closely spaced, rolls for pressing an outsole against said upper, means for holding said rolls a predetermined distance from said opposed means, and means for moving said upper, said last and said outsole past said opposed means and said rolls and for releasing said holding means.

3. A lasting machine comprising means for progressively and substantially simultaneously working opposite sides of an upper over a last, and cooperating means for progressively adhesively attaching an outsole to 'the marginal portions of said upper.

4. A lasting machine for prewelted shoes, comprising welt crease engaging means, means including said means for progressively and substantially simultaneously working opposite sides of an upper over a last, cooperating outsole pressure means, and means including said pressure means for progressively adhesively attaching an outsole to the welt of said upper.

5. An outsole attaching machine for a welted shoe, comprising means for simultaneously engaging the welt crease at opposite sides of the shoe, outsole pressure means, and means including said engaging means and said pressure means for progressively adhesively attaching an outsole to the welt of said shoe.

6. An outsole attaching machine for a prewelted shoe, comprising a pair of opposed, welt crease engaging Wheels having tapered peripheries, a pair of substantially axially aligned, closely spaced, outsole pressure rolls having a combined width not substantially less than the width of the outsole of 'said shoe, and means including said wheels and said rolls for progressively adhesively attaching an outsole to the welt of said shoe.

7. A lasting machine for a prewelted shoe, comprising means including a pair of opposed, welt crease engaging wheels having tapered peripheries. a pair of substantially axially aligned, closely spaced, outsole pressure rolls having a combined width not substantially less than the width of the outsole of said shoe, and means including said wheels and said rolls for progressively working opposite sides of a shoe upper over a last and V8. Ak lastingy machine comprising means' for 'Working opposite ysid'esfof 'a shoe upperiover a last,

a pair of pressure rolls arranged opposite said means for pressing an outsole against said upper, means for holding said rolls a predetermined distance from said working means, means for moving said upper, said last and said outsole past said working means and said rolls and for releasing said holding imeans, and means for spacing said outsole from said upper in advance of its -passage between said working means and. said rolls. 10. A lasting machine for a prewelted shoe comprising'a pair of Welt crease engaging Wheels for working opposite sides of an upper over a last, a pair of pressure rolls arranged opposite. said wheels for pressing an outsole against the welt on said upper, means for holding said rolls a pre-` determined distance from said Wheels, and means for moving said upper, said last and said outsole past said wheels and rolls and for releasing said holding means.

ll. A lasting machine for a prewelted shoe comprising a pair of welt crease engaging wheels for working opposite sides of an upper over a last, a pair of pressure rolls arranged opposite said wheels for pressing an outsole against the welt on said upper, said rolls being .substantially axially aligned and closely spaced and having a combined width not substantiallyrless than the width of said outsole, means for holding said rolls a predetermined distance froirn said wheels, andk means for moving said upper, said last and said outsole past said wheels and rolls and for releasling said holding means.

outsole from said welt in advance of its'passage between lsaid wheels and rolls.

13. A lasting machine for a prewelted shoe comprising a, pair of Welt crease engaging wheels for working opposite sides of an upper over a last,

a pair of pressure rolls arranged opposite said" wheels for pressing an outsole against the welt on said upper, said rolls being substantially axially aligned and closely spaced and having a' combined width not substantially less than the width oisaid outsole, means vfor holding said rolls a predetermined distance from said wheels, means for moving said upper, said last and said outsole past said wheels and rolls and for'releasing said holding means, and means for spacing said outsole from said welt in advance of its passage between said wheels and rolls.

14. A lasting machine comprising a base, a rst carriage movable on said base, a toe lasting plate attached to said carriage, a second carriage 'movable on'said cariiagdfa,'heel lasting plate'attached'to fsaid second carriage, `meansl for posi- "tioning said-second carriage on said first carriage,` sidelasting means attached tdsaid base, -and means for 'lasting means. i l y,

"15."A lasting machine comprising a base,Y a

moving said first carriage past'ls'aid iirs't carriage movable on said'base, aftoe lasting plate attached to said carriageya second carriage movable on said carriage, a. heel lasting plate attached to said second carriage, a heel stop attached to said second carriage adjacent said heel lasting plate, means for positioning said second carriage on said iirst carriage, sidelasting means attached to said base, and means for moving said first `carriage past said lasting means.

16. A lasting machine comprising a base, a rst carriage movable onsaidbase, a toe lasting plate attached to said carriage, a second carriage movable on said carriage, a heel lasting plate attached to said second carriage, means for posi-v tioning said second carriage on said first carriage,

side lasting means attached to said base, means for moving said ,rst carriage past said lasting means, and means including said positioning means for limiting the movement of said first carriage past said lasting means.

1'7. A lasting machine for a prewelt shoe, comprising a base, a first carriage movable on said base,- .a toe lasting plate attached to said carriage, a second carriage movable on said carriage, a heel lasting plate attached to said second carriage, means for positioning said second carriage on said first carriage, a `pair of lasting wheels pivotally attached toy said base for engaging the Welt crease of a shoe upper supported between said toe and heel plates, a pair ofoutsole pressure rolls pivotally attached to said base and arranged opposite said wheels, and means for moving said first carriage past said wheels and rolls. l

18. A lasting machine for a prewelt shoe, comprising a base, a rst carriage movable on said base, a toe lasting plate attached to said carriage, ya second carriage movable on saidcarriage. a heel lasting plate attached to said second carriage, means for positioning said second carriage on said'rst carriage, a pair of lasting wheels pivotally attached to said base for engaging the welt crease of a shoe upper supported between said toe and heel plates, a pair of outsole pressure rolls pivotally attached to saidbase and arranged opposite said wheels, means holding said rolls a predetermined distance from said Wheels, and means'for moving said rst carriage past said wheels and rolls and for releasing said holding means.

19. A lasting machine for a prewelt shoe, comprising a base, a first carriage movable on said base, a toe lasting plate attached to saidcarriage, a second carriage movable on said carriage, a heellasting plate attached to said second carriage, means for positioning said second carriage on said first carriageya pair of lasting Wheels pivotally attached to said base for engaging the welt crease of a shoe upper supported between said toe and heel plates. a pair of outsole presH sure rolls pivotally attached to said base and arranged opposite said wheels, means for moving base,` a toe lasting 'plate attached to said carriage; a second carriage movable on said oarriage,` a heel lasting plate attached to said second carriage, xneans for positioning said second carriage on said rst carriage, a pair of lasting wheels pvotally attached to said base for engaging the welt crease of a shoe upper supported between said toe and heel plates, a pair of outsole pressure rolls pivotally attached to said base