US1421488A - A corpora - Google Patents

Description

B. JORGENSEN. MACHINE FOR REMOVING SURPLUS MATERIAL.

Patented J uly 4, 19

APPLICATION FILED NOV. 16, 19KB.

UNITED STATES PAJ'ENT OFFICE.

BERNHARDT JORGENSEN, 013 BEVERLY. MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MIACHINEBY CORPORATION. OF PATERSON, NEW JERSEY, A CORPORA- TION OF NEW JERSEY.

Specification of Letters Patent.

Patented July 4, 1922.

Application filed November 16, 1918. Serial No. 262,856.

To all whom it may concern.

Be it known that l. BERNHARDT JoRonN- sex. a subject of the King of Denmark. residing at Beverly. in the county of Essex and State of Massachusetts, have invented certain Improvements in Machines for Removing Surplus Material. of which the following description. in connection with the accompanying drawings. is a specification. like reference characters onv the drawings indicating like parts in the several figures.

This invention relates to machines for removing surplus material. and is herein shown as embodied in a mat-hint particularly adapted for use in the manufacture of boots and shoes for ren'ioving from the bottom of a lasted shoe portions of the margin of the upper which are left upstanding at the toe end of the shoe and must be trimmed off in preparation for the sole laying oper ation. A machine designed particularly for this use is shown in United States Letters Patent No. tho-L656. granted on. l ehruary 25. 1913. upon an application of R. F. Mc- Feely. and one object of this invention is to provide improvements in the type of machine illustrated in said patent.

More particularly the invention has for an object to provide a. machine adapted for use in trimming otl" the upstanding edge of the upper at the toe of a lasted shoe which is made of felt or like material. In the manufacture of one type of felt shoe. for example. the opposite side portions of the upper at the rear of the toe are stitched together. or to a separate insole piece. along the shoe bot-tom prior to the toe lasting operatiomainl after a last has been inserted the upper at the toe is moistened and Worked into lasted position where it is fastened by tacks which are partially driven and are left in place a. sullicient time to permit the material to set in the shape of the last. Before the outsole is attached to the shoe the tacks must be removed and the upstanding edgesof the felt material at the toe must be trimmed oft. In performing the trimming operation upon this kind of shoe. however.

' ditficulties are encountered. due partly to the. character of the material of which the shoe is made and partly to conditions resulting from preceding manufacturing operations upon the shoe. The margin of the upper, because of the resiliency of the felt material, tends, to spring up from the bottom of the last, particularly after the lasting tacks have been removed. as they must be before the trimming operation can be completed. and there is consequently danger in the trimming operation of removing too much of the material or of trimming too near the edge of the last and thus damaging the shoe. While the fibres of the felt, moreover, are comparatively resistant to the cutting or abrading action of the trimming means. the material as a whole is comparatively yieldable to any pull such as would tend to displace or stretch it. and by reason of this condition there is danger in the trimming operation after the tacks are removed of distorting the upper through the pull of the trimming means and even of tearing the material, particularly at the edge of the last bottom. ireat care also must be exercised not to cut into the seam or seams whereby, as above explained, the edges of the upper at the rear of the toe portion are secnred together or to an insole piece. In view of the difficulties presented it has been deemed necessary heretofore to perform the toe trimming operation upon a shoe of this kind by the use of a hand knife. Such a hand operation. however. contributes neither to speed nor to uniformity in the work. nor does it afford insurance against damage. which sometimes results through failure of the operator to exercise due care.

This invention provides a. machine by the use of which the surplus upper material on shoes of the above mentioned class. as well as on other kinds of shoes. may be removed quickly and uniformly and without damage to the shoes.

(ontributory to such results. an important feature of the invention consists in a novel construction and arrangement of shoe positioning means and trimming means designed to facilitate the proper presentation of the shoe to the trimming means. The machine herein shown comprises shoe positioning means to which the shoe is presented with its bottom facing the trimming means. the shoe positioning means being movable a variably limited distance toward the trimming means in response to pressure of the bottom of the shoe against it to present the surplus mm terial within the field of action oi the trim-- ining means. By this construction the po sition-or' the shoe in its relation to the trimming means and the depth oi the trimming action are accurately determined, and only a comparatively slight movement oi? the shoe is required, after the shoe has been correctly positioned, to effect the trimming operation.

Contributing further to the desired results, the invention provides, as an additional teature, novel construction ot shoe positioning means designed to assist in localizing the action oi? the trimming means upon the shoe, the construction shown com prising novel means for shielding portions ot the shoe materials from engagem nt with the trimming means and tor holdi'ig them out oi the range of action oi'i'the trimming means and against the pull oi? said means in its operation upon the surplus material. in the useot the machine upon a shoe of the particular kind above described such shoe positioning means is of particular utility in holding the felt material on the last bottom in a properly flattened condition and also in resisting the pull of the trimming means such as might distort the lasted upper or cause it to tear. This teature oi the invention :is further of particular utility as twill bodied in a construction such hereinbetorc described in which the shoe positioning means is moved into operative relation to the trimming means bv the pressure against it oi the materials on the bottom oi the last, since in such a construction, the iippllt'iltlOll of the holding pressure to the ma tcrials may be made a access: rv incident to the presentation of the shoe to the triinniing means.

The above and other :ieatures oi the iii-- vention. includii'ig certain details of construction and combinations of parts, will now be more particularly described with reii'erence to the accompan' ing drawiiu s and pointed out in the claims.

in r the drawin Figure l is a view in side elevation oi a machine in which the invention is en'ilz-odied Fig. 2 is a view in front elevation of a portion oi the machine including the shoe positioning means;

Fig. 3 shows in perspective the toe portion oi a felt shoe oi the type hereinheioro dnscribed prior to the actionot the machine upon the shoe and illustrates the relation o i the shoe to the shoe positioning means: and Fig. l; shows the same shoe aitcr it has been operated. upon by the machine.

ti imilarl to the machine shown in the liicl eely patent hereii'ibeiore rei'erred t thc 'machine herein shown comprises a rotatable abrading wheel 2 which carries upon its peril'ihei'y a sheet metal aln'ading member having iormed. thereon a large number oi sharp upstanding projections the wheel being mounted upon a rotatable shaft 6 which is driven by a belt 8. The abrading rel 2 is enclosed in a casing 10 which is provided at the front with an opening to expose a portion of the periphery oi? the wheel, the casing 10 serving to confine the shredded material which is removed from the shoe and to direct it to an exhaust blower 12 in the base of the machine.

For the purposes oi this invention there is mounted upon a pivot rod 14: on the casing it) a depei'iding ln'acket 16 a portion of which shaped to provide a plate i8 tor engage ment with the bottom oi a shoe and has an opening 20 opposite to the periphery of the abrading wheel 2 ol suilicient size to permit the upstanding margin oi the upper at the toe end oi a lasted shoe to project through the plate toward the wheel. A s )ring 22 on the rod l i tends to position the bracket l6 in such relation to the wheel as to permit the shoe to be initially positioned in engagement with the plate 18 prior to any sub stantial action of the wheel upon the edge ot the upper. By pressure of the shoe against the plate 18 the bracket 16 may be swung toward the wheel 2 against the tension oi the spring 22 to rei'ider the wheel eiifective to trim oii' the surplus margin oi the upper. the limit oi movement oi the bracket in this direction being determined by an adjustable stop screw 2i which is carried by the bracketand is arranged to engage a portion oi the casing 10.

In order to assist the operator in presenting the shoe quickly in its proper relation to the opening 20. the bracket l0 is provided with a tlauge 26 projecting forwardly above the opening in position to engage the toe end face oi the shoe, the flange curving downward also at opposite ends oi the opening. The distan e between the flange 26 and the edge 28 ot the opening 20 is preferablv sligl'itly less than the normal distance oi the ioremost lasting tack from the toe end face oi the shoe. this construction permitting the shoe to be readily presented in its proper position withm'it danger oi interference between the lasting tacks and the plate 18. The portions oi the flange 2G atthe opposite sides oi the opening 20 are sufliciently far apart to admit shoes oi the maximum width, these portions of the flange serving as guides to indicate to the operator the proper lateral position oi the shoe.

While the shape oi the opening 20 in the plate 18 is pmctically immaterial, as far as the broader aspects oi the invention are concerned. the construction shown. in which the edge 28 in trout oi the gathered upstandin margin oi the upper is substantially straight 5 and ot' suiiicient length to extend substantially 'llOll'] one side to the other of the surplus material, is oi. advantage as insuring ample room in the opening 20 for portions oi? the upstanding margin which are opposite to the corners of the toe where the gathered material is likely to be particularly prominent.

Fig. 3 illustrates the type of felt shoe hereinbefore discussed, the shoe there shown having the opposite side edges of the upper at the rear of the toe end secured by scams (4 to an insole piece I) and the upper lasted at the toe end and secured in lasted position by five tacks 0. Before the outsole is laid the surplus upstanding margin d of the upper must be trimmed off. For this purpose the shoe is presented by the operator in the position indicated in Figs. 1 and 3 with its toe end face abutting against that portion of the flange 26 which is above the opening 20 in the plate 18 and with the tacks 0 and the surplus material 61 pro jecting through the openin By reference to Fig. 3 it will be seen that when the shoe is thus presented the plate 18 engages the shoe materials on all sides of the upstanding margin (Z, extending across the toe and in front of the tacks and downwardly and inwardly across the seams a and the insole piece I). lVith the shoe properly presented the operator pushes it forward toward the abrading wheel 2, swinging the bracket 16 against the tension of the spring 22. As soon as the tacks are engaged by the upstanding projections on the rotating sheet metal member 4 they are pulled out of the last, and substantially simultaneously the member etbegins its abrading or trimming action upon the surplus material d, such action continuing until the stop 24 engages the casing 10 and limits the movement of the bracket 16 and the shoe. The stop is so adjusted that at this point the material is trimmed oif sufficiently to eliminate all interference with the proper laying of the outsole, enough of the margin of the upper being left, however, to lie smoothly over the last bottom as far back as the front edge of the insole piece 5, as shown in Fig. 4. The movement of the shoe toward the trimming means against the tension of the spring 22 as above described causes the plate 18 to press effectively against the shoe materials on the bottom of the last on all sides of the surplus margin (1, such pressure serving in addition to the shielding function of the plate to insure that the trimming action shall be properly localized. By its pressure against the shoe, moreover, the plate serves to resist the pull of the trimming means upon portions of the materials which are adjacent to the margin (Z and thus to guard against distorting or tearing the upper.

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

l. in a machine for removing surplus material from the bottom of a lasted shoe, the

combination with trimming means, of a shoe positioning device constructed and arranged to position longitudinally an end of a shoe held in the hands of the operator with its bottom facing said trimming means and movable with the shoe in a path transverse to the plane of the shoe bottom to present the surplus material in the field of action of said means.

2. In a machine for removing surplus up per material from the bottom of a lasted shoe, the combination with trimming means, of a shoe positioning device constructed and arranged to position longitudinally an end of a shoe held in the hands of the operator with its bottom facing said trimming means and movable with and by the shoe in a path transverse to the plane of the shoe bottom to present the surplus upper material in the field of action of said means, and adjustable 'means for limiting the movement of said device toward the trimming means.

3. In a machine for removing surplus material from the bottom of a lasted shoe, the combination with rotary trimming means, of a shoe positioning device constructed and arranged to position a shoe with its bottom facing said trimming means and tangential to the path of movement thereof and movable with the shoe in a path transverse to the plane of the shoe bottom to present the surplus material in the field of action of said means, spring means tending to move said device away from the trimming means, and means for limiting the movement of the device toward the trimming means.

1. In a machine for removing surplus upper material from the bottom of a lasted shoe, the combination of means for positioning the toe end of the shoe, and rotary trimming means for removing material projecting beyond the shoe bottom, said shoe positioning means and trimming means being constructed and arranged for relative movement in a path transverse to the plane of the shoe bottom to cause said surplus material to be presented within the field of action of the trimming means.

In a machine for removing surplus upper material from the bottom of the toe of a lasted shoe. the combination with trimming means for removing material projecting beyond the shoe bottom. of shoe positioning means movable in response to pressure of the bottom of a shoe against it and having an opening therein through which said surplus upper material is presented in the field of action of the trimming means.

6. In a machine for removing surplus material from the bottom of'a lasted shoe, the combination with trimming means, of a shoe positioning device constructed and arranged to position a shoe with its bottom facing said trimming means, said device being restrained against movement laterally of trimming means and mounted for swingmovement tmvard the trimn'iing means to present the surplus material in the field of action of said means.

7. In a machine for removing surplus material from the bottom of a lasted shoe, the combination with trimming means, oi? shoe positioning means mounted for swinging movement in response to pressure ot the bottom of the shoe against it to present the surplus material in the held of action of said trimming means, and adjustable means tor limiting said movement of the shoe positioning means.

8. In a machine for removing surplus material from the bottom of a lasted shoe, the combination with trimming means tor removing material projecting beyond the shoe bottom, of a shoe positioning device constructed and arranged to position an end of a shoe with its bottom facing said trimming means, said device being mounted tor swinging movement toward and from the trimming means about a pivot located be yond the end of the shoe, a spring for positioning said device normally in a location relatively remote t'rom the trimming means while permitting it to be swung by pressure of the shoe into position to present the surplus material in the held of action ot the trimming means, and means for limiting the swinging movement ol the device toward said trimming means.

9. In a machine for removing surplus material from the bottom of a lasted shoe the combination with abrading means, of means constructed and arranged to overlie the shoe materials on an end of the bottom of the shoe on all sides of the portion which is to be removed to shield said materials from contact with the abrading means, and means for effectin by pressure on the shoe held in the operators hands, relative movement between the shielding means and the abrading means.

10. In a machine for removing surplus upper material from the bottom oi a lasted shoe, the combination with cylindrical trinu ming means, of shoe positioning device constructed and arranged to position an end oi? a shoe with its bottom itacii'ig said trim-- ming means and. movable with the shoe in a path transverse to the plane of the shoe the ing bottom to present: the surplus upper material in the field of action of said means, said device being constructed to shield from the tlCtlOliOlli the trimming means the material on the shoe bottom which is adjacent to that portion which is to be removed.

11. In a machine for removing surplus material from the bottom of a lasted shoe, the combination with trimming means, of a shoe positioning device constructed and ar ranged to position a shoe with its bottom facing said trimming means andmovable in to pressure of the shoe in a path answ s to the plane oi? the shoe bottom present the surplus material in the field ot action of said trimi'ning means, said device being constructed to against the material on the shoe bottom adjacent to the portitm which is to be removed to hold said material against the pull or" the trimming means.

12. In a machine tor removing from the bottom of a lasted shoe the upstanding margin 0'! the toe portion of the upper, the combination with trimi'i'iing means, of means for engaging the material on the bottom ot the shoe in trout and in back of the portion which is to be removed to hold said material. against displacement and to flatten it on the bottom oi the last out of the range ol action o'lflthc trimming means.

13. In a machine tor removing surplus upper u'iaterial From the bottom ot a lasted shoe, the combination of shoe positiouim; means and upper trinnuincmeans, the former movable toward the trimming means tocausc the surplus material to be presented within the field o'l action of the trimming means, said parts being constructed and arranged to *ause the holding pressure GX- eii'ted by the workman on thcshoc positioning meausin presenting the shoe to the machine to be applied to the shoe upper materials on ,the bottom of? the last adjacent to said surplus material and to cause as a result ot said pressure presentation of the shoe to t l trimming means.

I i. In a machine tor rcmovinp; surplus material from the bottom at a lasted shoe, the combination with trimn'iing u'ieans. of gage plate constructed to engage the bottom oi" the shoe and having an opening to permit that portion ot the material which to be removed to project toward the trimming means. said plate being movable in response to pressure ot the shoe in a path transverse to the plane 0! the shoe bottom to present the shoe in operative relation to the trimming meansv In. a machine :tor removing surplus material from. the bottom oi a lasted shoe. the combination with trimming means, ot a ,re plate having an opening to permit that portion of the material which is to be removed to project lLO\ rd the trimming means, said plate ljieing movable toward the trimming means in response to pressure of the bottom of the shoe a- 'ainst it a d con structed to press against the material on the bottom of the last round that portion which is to be removed to hold said material against displacement and protect it from the action of the trimming means.

16. In a machine for ren'ioving surplus material from. the bottom of a lasted shoe, the combination with trimu'iiug means, of a gage plate having an opening to permit that portion of the material which is to be removed to project toward the trimming means, said plate being movable toward the trimming means in response to pressure of the bottom of the shoe against it, and means for limiting movement of the plate in said direction.

17. In a machine for removing surplus material from the bottom of a lasted shoe, the combination with a rotary trimming member, of a shoe positioning device mounted to swing about an axis parallel to the axis of, and into approximately tangential relation to, said member to present said surplus material in the field of action of the member.

18. In a machine for removing surplus material 'ti'om the bottom of a lasted shoe, the combination with a rotary trimming member, of a shoe positioning gage plate mounted to swing about an axis parallel to the axis of said member in response to pressure of the bottom of the shoe against it and having an opening to permit the surplus material to project toward the trimming member, a spring against the pressure of which said plate is movable toward the trimming member, and adjustable means for limiting movement of the plate in said direction.

19. In a machine for removing surplus material from the bottom of a lasted. shoe at the toe, the combination with trimming means, of a shoe positioning device having an opening to permit the surplus material to project toward the trimming means and also means for engaging the toe end face of the shoe to position the shoe relatively to said opening, said device being movable in response to pressure of the bottom of the shoe against it to present said surplus material in the field oi": action of the trimming means.

20. In a machine for removing surplus material from the bottom of it lasted shoe at the toe, the combination with trimming means, of a shoe positioning device'arranged to receive a. shoe presented with its toe pointing upward, said device being movable in a path transverse to the plane of the shoe bottom to present the surplus material in the field of action of the trimming means.

21. In a machine for removing surplus material. trom the bottom of a lasted shoe at the toe, the combination with trimming means, of a shoe positioning device arrange to receive a shoe presented with its toe pointing upward and having an opening to permit the surplus material to project toward the trimming means, said device being mounted to swing about. an axis above the shoe to present said surplus material in the field of action of the trimming means.

22. In a. machine for removing surplus material from the bottom of a lasted shoe at the toe, the combination with trimming means, of a shoe positioning device arranged to receive a shoe with its toe pointing upward and mounted to swing about an axis above the shoe toward and from the trimming means, said device being constructed to engage the bottom of the shoe adjacent to the surplus material and having also means for engaging the toe end face of the shoe to determine the position of the shoe.

In testimony whereof I have signed my name to this specification.

BERNHARDT J ORGENSEN.

Images