US2421777A

US2421777A - Lasting machine

Info

Publication number: US2421777A
Application number: US655754A
Authority: US
Inventors: Albin C Eek
Original assignee: United Shoe Machinery Corp
Current assignee: United Shoe Machinery Corp
Priority date: 1946-03-20
Filing date: 1946-03-20
Publication date: 1947-06-10
Anticipated expiration: 1964-06-10

Description

June 10, 1947 A EEK 2,421,777

LASTING MACHINE Filed March 20, 1946 2 Sheets-Sheet l I i a [nvenfor Albin 659k 5 June 10, 1947. c, EEK 2,421,777 v LASTING MACHINE Filed March 20; 1946 2 Sheets-Sheet 2 40 s a v Y Inventor Albm C Eek Patented June 10, 1947 2,421,777 LAs-T'ING MACHINE "Webster Groves," Moi; signer-to Ai-Bih United "Shoe Jr, a c

aihinery Corporation; -FIe"mifig=- oration of'ew Jersey" Aiipl'ibatiliiiMircfi-zo, 1946, Serial No. 655,754

8 Clatinis';

v invention" elates to" m'stifigr ma chifis;

State's Letter's" Patent No.

. Z partli in section'nf; a portion of w-rnalc hine-such' as shown in the above mentiohed *Letters' Pate'nt inward wiping movementsbut prior-to theiifivwipers-and of parts associatedtherewitlr;

Fig: 3 isa'wi-ew showing-in ri'ghbhand *side e;1-e=

vation the-portion 0f the-str'ucture at the deft-- cured to theinsolebydement all a-round the sHoe' prior to Y the lasting of any other portion of tfie upper materials;- Betweenfthe lining a nwthe, outer layer b at -th' counter 11," After theistingofthe lining the shoe may be" conveniently presented 'tofa maehine' such as sh'o wn'in theabove mentined Letters Pgtent foriiasti'fig themarg in' of tliehe'el end portion of the outer Iziyel inwa-rdli over the insole and} for securing it; -t'oget1ier with-the= fitnge of the counter d; to the insole'bydfiving a plurality of tackst; The-machineinclilds ax sh'oe support or jack 2 -pr0videdwith a-las't pind wh'ih enters the usual "spindle h'ol-e in the heel end of the last and by movement of wh'ich the shoe is'-'p11esented bottom upward to; the lasting instrumentahties; In the operation ofthemaehi'ne the-upper ma te'rialsa-re clmped 'akiout the heel end of 'the last by a heel-bwnd fij after 'Whibh the still unlast'ed marginofith'e heel end of the upper iswiped in- Wardli over the insole by a; pairof="wipers*8 which are advancedfbbdily lengthwiseof the shoe and' are closed inwairdly widthwise o frthe shoe; It" wi11be-unde'rstood thatin operating on aixshoe of the kindhereifn' shown it is" the marginof the outer; layer}; o'f the uppermaterials whichisithus wiped inwardly; together with the margin of: the counterd if an unmolded countenis used;

sec-mea respectiveh w the: difie'rentf' wipers to.

heel' end" of the sheet isa move therewith, as disclosed in the previously mentioned Letters Patent, are members I6 which may be termed tacker blocks, each of these members being provided with a plurality of passages (not herein shown) from which tacks are driven through the wipers to fasten the upper. Movable with the tacker blocks and the wipers are driver blocks l2 each provided with a plurality of tack drivers l4 for driving the tacks, the driver blocks being movable downwardly in guideways HS in the tacker blocks to operate the drivers. Such downward movements are imparted to the driver blocks by spring-operated means not herein shown but fully disclosed in the above-mentioned Letters Patent, such means being connected to upstanding headed projections IS on the driver blocks.

For purposes of this invention there is secured by screws 26 to the front-end portion of each of the tacker blocks 16 a bracket 22 which, in cooperation with the front face of the tacker block, provides a guideway 24' for a vertically movable knife carrier 26. At its lower end the knife carrier has a horizontally extending portion 28 provided with a T-shaped guideway 36 on which is mounted a knife holder 32. Secured to this knife holder by a bolt 34 and a nut 36 is a knife 38 which in response to downward movement of the knife carrier 26 slits the margin of the outer layer 1) of the upper materials at the front end of the heel seat. As shown particularly in Fig. 5, a portion of the knife 38 fits into a recess in the holder 32 to prevent any turning of the knife about the bolt 34, and formed also in the knife is a vertical slot 40 (Fig. 4) through which the bolt extends, this slot permitting vertical adjustment of the knife with respect to the holder. The lower face 42 (Fig. 3) of the holder is arranged to engage the margin of the upper forwardly of the heel seat to limit the depth of the cut of the knife.

Threaded in the upper end of each knife carrier 26 is a Vertical rod 44 having a nut 46 threaded on its upper end, and between this nut and a washer 48 engaging the upper end of the bracket 22 and of the tacker block I6 is a spring 56. This spring holds the knife carrier initially at the limit of its upward movement determined by engagement of its horizontal portion 28 with the lower end of the bracket 22 and returns the carrier to that position after its downward movement. The horizontal portion of the knife carrier is extended rearwardly to a position underlying the front-end portion of the driver block l2, the lower portion of the tacker block W as used heretofore being cut back to permit this arrangement, as is also a portion of the underlying wiper 8. Arranged to engage the top of this rearward- 1y extending portion of the knife carrier is the lower end of a plunger 52 mounted in a recess in the driver block l2 and provided at its upper end with a rod 54 extending upwardly through a partition 56 in the driver block into another recess in the block above the partition. Between the partition 56 and an enlarged head on the lower end of the plunger 52 is a spring 58. Threaded on the rod 54 above the partition 56 is a nut 66, and. between this nut and a screw 62 threaded in the driver block is another spring 64. It will be evident that the tendency of both

springs

58 and 64 is to move the plunger 52 downward relatively to the driver block l2 as far as permitted by engagement of the nut 66 with the partition 56, and when downward movement is imparted to the driver block to operate the tack drivers M, the block acts through the two springs and the plunger 52 to impart downward movement also to the knife carrier26against the resistance of the spring 56 and thus to cause the knife 38 to slit the upper. When the downward movement of the knife carrier is stopped by engagement of the lower face 4'2 of the knife 32 with the margin of the upper, the

springs

58 and 64 may yield to permit continued movement of the driver block until the tacks are fully driven. The two

springs

58 and 64, both of which perform the same function, are provided because of the inconvenience of providing in the driver block a single spring of sufiicient strength through which to operate the knife carrier.

Secured on the top of the front end portion of the horizontal extension 28 of each knife carrier 26 is an L-shaped bracket 66 in which is rotatably mounted a screw 68 held against lengthwise movement by engagement of the bracket with a knob 10 and a flange 12 on the screw. The screw is threaded in the knife holder 32 and. extends through the previously mentioned slot 46 in the knife 38. It will therefore be evident that by the two screws 68 the knife holders 32 may be adjusted each independently of the other along the guideways 30 to vary. as desired the locations of the slits in the margin of the upper in operating on shoes of different sizes.

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

1. In a lasting machine, a pair of wipers movable to wipe the marginal portion of the heel end of an upper inwardly over an insole on a last, members from which to drive fastenings to fasten the upper, said members being mounted to move respectively with the different wipers in fixed relation thereto in the wiping operation, driver blocks mounted to move respectively with said members and each provided with a plurality of drivers for driving corresponding fastenings, the driver blocks being further movable relatively to said members heightwise of the shoe thus to operate the drivers, knife carriers supported by said members also to move with them and the wipers, said knife carriers being guided independently of the driver blocks for movements heightwise of the shoe but being thus movable by the driver blocks, and knives supported by said carriers for slitting the margin of the upper over the insole in response to such movements of the carriers heightwise of the shoe.

2. In a lasting machine, a pair of wipers movable to wipe the marginal portion of the heel end of an upper inwardly over an insole on a last, members from which to drive fastenings to fasten the upper, said members being mounted to move respectively with the different wipers in fixed relation thereto in the Wiping operation, driver blocks mounted to move respectively with said members and each provided with a plurality of drivers for driving corresponding fastenings, the driver blocks being further movable relatively to said members heightwise of the shoe thus to operate the drivers, knife carriers also movable with said members and the wipers, said knife carriers being supported independently of the driver blocks for movements heightwise of the shoe, knives supported by said carriers for slitting the margin of the upper over the insole in response to such movements of the carriers heightwise of the shoe, and spring means for transmitting force yieldingly from the driver blocks to said carriers thus to operate the carriers.

holder 3. In a lasting machine, a, pair of wipers movable to wipe the marginal portion of the heel end of an upper inwardly over an insole on a last, members from which to drive fastenings to fasten the upper, said members being mounted to move respectively with the different wipers in fixed relation thereto in the wiping operation, driver blocks mounted to move respectively with said members and each provided with a plurality of drivers for driving correspondin fastenings, the driver blocks being further movable relatively to said members heightwise of the shoe thus to operate the drivers, knife carriers also movable with said members and the wipers, said knife carriers being guided by said members independently of the driver blocks for movements heightwise of the shoe, knives supported by said carriers for slitting the margin of the upper over the insole in response to such movements of the carriers heightwise of the shoe, springs in said driver blocks for operating the knife carriers yieldingly by the movements of the driver blocks, and other springs for returnin the knife carriers when the driver blocks are returned.

4. In a lasting machine, a pair of wipers movable to wipe the marginal portion of the heel end of an upper inwardly over an insole on a last positioned bottom upward, members from which to drive fastenings to fasten the upper, said members being mounted to move respectively with the different wipers in fixed relation thereto in the wiping operation, driver blocks mounted to move respectively with said members and each provided with a plurality of drivers for driving corresponding fastenings, the driver blocks being also downwardly movable relatively to said members to operate the drivers, knife carriers movable with said members and the wipers, said knife carriers being guided by said members independently of the driver blocks for downward and upward movements and having portions thereof extended lengthwise of the shoe to positions underlying portions of the driver blocks, knives supported by said carriers for slitting the margin of the upper over the insole in response to downward movements of the carriers, and spring means arranged to apply pressure to said extended portions of the carriers to operate the carriers in response to the downward movements of the driver blocks.

5. In a lasting machine, a pair of wipers movable to wipe the marginal portion of the heel end of an upperinwardly over an insole on a last, members from which to drive fastenings to fasten the upper, said members being mounted to move respectively with the different wipers in fixed relation thereto in the wiping operation, driver blocks mounted to move respectivel with said members and each provided with a plurality of drivers for driving corresponding fastenings, the driver blocks being further movable relatively to said members heightwise of the shoe thus to operate the drivers, knife carriers supported by said members also to move with them and the wipers, said knife carriers being guided independently of the driver blocks for movements heightwise of the shoe, knives supported by said carriers for slitting the margin of the upper over the insole in response to such movements of the carriers heightwise of the shoe, the carriers having thereon means for engaging the shoe to limit their movements, and springs for transmitting force from the driver blocks to the carriers to operate the carriers, said springs bein yieldable to permit further movements ,of the driver blocks when the carriers are stopped by the shoe.

6. In a lasting machine, a pair of wipers movable to wipe the marginal portion of the heel end of an upper inwardly over an insole on a last, membersfrom which to drive fastenings to fasten the upper, said members being mounted to move respectively with the different wipers in fixed relation thereto in the wiping operation, driver blocks mounted to move respectively with said members and each provided with a plurality of drivers for driving corresponding fastenings, the driver blocks being further movable relatively to said members heightwise of the shoe thus to operate the drivers, knife carriers also movable with said members and the wipers, said knife carriers being supported independently of the driver blocks for movements heightwise of the shoe but being thus movable by the driver blocks, and knives supported by said carriers for slitting the margin of the upper over the insole in response to such movements of the carriers heightwise of the shoe, said knives being adujstable each independently of the other in directions lengthwise of the shoe.

7. In a lasting machine, a pair of wipers movable to wipe the marginal portion of the heel end of an upper inwardly over an insole on a last, members from which to drive fastenings to fasten the upper, said members being mounted to move respectively with the different wipers in fixed relation thereto in the wiping operation, driver blocks mounted to move respectively with said members and each provided with a plurality of drivers for driving corresponding fastenings, the driver blocks being further movable relatively to said members heightwise of the shoe thus to operate the drivers, knife carriers also movable with said members and the wipers, said knife carriers being guided independently of the driver blocks for movements heightwise of the shoe but being thus movable by the driver blocks, knife holders on said carriers, knives on said holders for slitting the margin of the upper over the insole in response to the movements of the carriers heightwise of the shoe, and means for adjusting said knife holders relatively to the carriers in directions lengthwise of the shoe.

8. In a lasting machine, a pair of wipers movable to wipe the marginal portion .of the heel end of an upper inwardly over an insole on a, last positioned bottom upward,-members from which to drive fastenings to fasten the upper, said members being mounted to move respectively with the different wipers in fixed relation thereto in the wiping operation, driver blocks mounted to move respectively with said members and each provided with a plurality of drivers for driving corresponding fastenings, the driver blocks being also downwardly movable relatively to said members to operate the drivers, knife carriers movable with said members and the wipers, said knife carriers having portions guided by said members independently of the driver blocks for downward and upward movements and other portions extended horizontally lengthwise of the shoe to positions underlying portions of the driver blocks, knife holders guided by said horizontal (portions. of the knife carriers for adjustin movements lengthwise of the shoe and having thereon knives for slitting the margin of the upper over the insole in response to downward movements of the carriers, and spring means in the driver blocks arranged to act on said extended portions of the carriers to operate the carriers yieldingly in response to the downward movements of the driver blocks.

ALBIN C. EEK.