US1910694A - Apparatus for forming back heel seams for footwear - Google Patents

Description

May 23, 1933. HERBSTER 1,910,694

APPARATUS FOR FORMING VB-XCK HEEL SEAMS FOR FOOTWEAR Original Filed Sept. 24, 1927 3 Sheets-Sheet 1 y 23, 1933. B, H. HERBSTER 1,910,694

APPARATUS FOR FORMING BACK HEEL SEAMS FOR FOOTWEAR 3 Sheets-Sheet 2 Original Filed Sept. 24, 1927 Eggaz h

y 23, 1933- B. H. HERBSTER 1,910,694

APPARATUS FOR FORMING BACK HEEL SEAMS FOR FOOTWEAR I Original Filed Sept. 24, 1927 3 Sheets-Sheet 5 Patented May 23, 1933 UNITED STATES ATENT ore-res iannranjrn i'innnsfrn'n, on ivrrnwitnnnn, wrseeasnw; ii'ssrenomee asses Assiefi lvrnnmsgmo Bos'ron MAoHlNn WdnKs commute; or LYNN} MASS efin sm rs} .A- can APPA-RATUS- non ron'lvime BACK HEEL seams FOR FOOTWEAI? Original application filed- September 24} 1927, Serial No-.- 2211734. Divided and this application filed April 5, 1930.- Serial at. 441,834.

This invention relates to improvements in apparatus for forming baek'heel seams for footwear, and is adivision of application Serial Number 221,734, filed September 24th, 1927, for'lvlet'hod for formingbaek'heel seams for footwear; which matured into Patent N 0-, 137594543.

Heretofore, shoe manufacturers have en'- countered dilii'cul'ties in forming the back'h'eel seam on shoes. The method formerly em ployfed was to stitch the two quarters of leather together on the wrong side, appl'y'la strip of adhesive tape thereto, and then turn the prodnctright side out. This method was fairly successful where a double row of stitching was used, but double stitching is objectionable because-the seam formed thereby is not neat in appearance. When the aforementioned method was used" with a single row of stitching, d'iflicult'ies were en'- countered. After turning. the product right side out, there was a pronouncedbul'ging on one side of the seam, and the strip of tape on the inside wouldwrinkle. The result-Was a cumbersome looking seam and a poorly shaped heel portion. For these reasons, it became very desirable to devise a new method for taping and smoothing out the seam.

It'is one of the ohjects'of the present invention to provid ean apparatusfor forming back heel seams for footwear which will produce a Well shaped back heel portion of the shoe, and a seam crease which is neat in appearance.

It is a further object ofthis' invention to provide an apparatus for forming back heel seams for footwear in which a single row of stitching is employed. 7

It is a furtherobject oi thisinvention to provide anapparatus for applying the strip of adhesive tape to theseam ridge and for smoothing out the seam ridgeand shaping the heel portion when the quarters of leather are right side out or in their natural position: I v I A further object of this invention is to providean apparatus for forming back heel seams for shoes which is simple, efi ective, and well adapted for the purpose. described;

With the above and other objects in view;

forth in" the" claims, and all equivalents thereof. v v p In the: accompanying drawings in which the same reference characters indicate the same parts in all of the'views c Fig. 1' is a side elevation of the improved apparatus for performing the combined operations of back seam pressing and tape applying, showing the device" in" attachment with a portion of 'atable;

Fig. 2 is an end view' thereof; V Fig; 3" is a view of the opposite side of themachine from'that shown in" Fig. 1 parts being" broken away and par-ts beingshown-in tio Fig. 4. F 3

Fig. 5" is a sectional view taken on line 5-- 5 of Fig. 3; v

I Fi 6 is a detail View of the front end or the machine; Showing shoe ua ters in' position on the machine, parts being broken.

y; i F i'g, 7 isa side'view of a1 portibn' ofthe machindshowing the shoe" quartersin post: tfion, parts being broken away and parts being shown in" sectiony M y Fig: 8i's, a view of 'thein sidefof the" finished product showing the attaehed' strip of adhe= si've; tape; and

Fig. 9 's an outside View of the finished product. e I Referring t the drawings; the eumerar 12' designates a base memherwhi'cn is arranged to be secured to a table 13. The-basememter is formed with a" right angular arm 14f and a 'tubular" ex t'ensionfl fi. Within; the" tubular extension a bifurcated bearing lfij positioned. An adjusting 's'cr'ew l9fholds the bearing; at any desired length within" the tubular extension. Loosely mounted on a 1 in 18 and withi-n'the' bifurcated end ortieir oft'he bearing isaj ba'ck heel s'eam" supporting member preferably in'gtheforn'i of a wh'eel or rol1119; Seeure'dto the tubular extension" 15; and having its upper end adjacenttlie: wheel 19 is a tapeguidenohaving an eye 21. The

at is a sectional view taken on line till center of the shaft 22.

upper portion of the arm 14 forms a bearing for the shaft 22. On the outer end of this shaft is a rigidly mounted outer pulley 23 and a rigidly mounted inner pulley 24. On an intermediate portion of the shaft 22 is a tightly fitting eccentric sleeve 25. Loosely mounted on the eccentric sleeve is an outer collar26 formed with a downwardly extending arm 2'? having a vertically extending slot 28. A bolt 29 projects through this slot and into a bracket 30 which is secured to the arm 14. A spring member 31 held between pins 32 holds the arm 27 yieldingly in a raised position. Secured to and projecting from the lower portion of the arm 27 is a seam smoothing member 33 having an engaging head 34. The front end of the shaft 22 is formed with an eccentric portion 35 which is smaller in diameter than the main part of the shaft and which is positioned ofi the Journaled on this eccentric portion is a feeding arm 36 having a vertical slot 37. A bolt 38 extends through this slot and into the arm 14. On the lower end of the feeding arm 36 and adjustably positioned within a bore is an inverted T- shaped feeding member 39 having a groove 40 in its lower surface. A. set screw 41 is arranged to adjust the feeding member 39 within the bore. Extending downwardly from a bracket 42 on the arm 14 is a guide finger 43. A spring 44 surrounding the upper portion of the finger and positioned between extensions45 holds the finger yieldingly in position.

The outer pulley 23 is rotated by means of a belt 46 which is connected with driving mechanism 47. The inner pulley 24 is connected by an endless belt with a lower pulley 48. The lower pulley is rigidly mounted on one end of a shaft 49 which is journaled in bearings 50, the latter being secured to the lower side of the table 13. On the other end of the shaft 49 a cranked arm 51 is rigidly mounted. A bearing 52 also secured to the underside of the table has journaled therein a shaft 53, upon one end of which a tape holding wheel 54 is mounted. The wheel 54 isarranged to hold a roll of adhesive tape 55 which is fed to the machine.

The operation of the device is as follows: When the power is turned on, the driving mechanism 47 is set in motion and this is transmitted by the belt 46 and the pulley 23 to the shaft 22. As the shaft revolves, a reciprocal motion is imparted to the eccentrically mounted arm 2'? and the leather smoothing member 33. A similar motion is given to the arm 36 by the eccentric 35. When the shaft 22 is rotating, motion isalso transmitted by the pulleys 24 and 48 to the shaft 49. This causes the cranked arm 51 to rotate and pull the adhesive tape off of the roll,

method is used: Two pieces of leather forming the quarters of a shoe are stitched together on the wrong side. They are then turned right side out, presenting a seam crease on the convex face of thework and a seam ridge on the concave face of the work and placed in the machine on the wheel 19, as shown in Figs. 6 and 7. The guide finger 43 rests in the seam crease. Adhesive tape which passes from the roll over the cranked arm 51 and through the eye 21 in the tape guide 20, is in place on the wheel 19 with its adhering side up. As the leather is fed in, the feed member 39 goes through the various positions shown by the dotted lines in Fig. 6, pressing down upon and smoothing out the seam ridge and causing the adhesive tape to become affixed to the under side of the seam ridge. The feeding member 39 also tends to push or feed the leather further along the wheel 19. The groove 40 in the feeding member is for the purpose of receiving the seam crease, as illustrated in Fig. 7. After the strips of leather have passed the feeding member, they are engaged by the head 34 of 5:

the smoothing member 33. This member presses upon and smooths out the seam, shapes the heel portion of the shoe, and causes the marginal edges of the tape to be secured to the adjacent face of the work on opposite sides of the pressed seam ridge. The finished products 56 are discharged from the machine, as shown in Fig. 6, and it is then necessary to cut off the projecting strips of tape. By this method, a neat seam and a well shaped back heel portion of the shoe are produced, as illustrated in Fig. 9. The smoothing out of the seam and taping are both done while the leather is right side out, so the necessity of turning the leather over, and the consequent bulging, is eliminated. The strip of adhesive tape is also affixed to the inner portion in such a manner that there are no wrinkles, as is illustrated in Fig. 8. That is, the marginal edges of the adhesive tape are united to the concave face of the work on opposite sides of the seam ridge.

From the foregoing description, it may be seen that the improved apparatus for producing back heel seams for shoes is simple, effective, and well adapted for the purpose described.

What I claim as my invention is:

1. A shoe machine comprising a back heel seam supporting member, and means engaging the outside of the seam for simultaneously smoothing out said seam and applying a strip of material from below over the inside thereof.

2. A shoe machine comprising a back heel seam supporting member, means for holding a roll of adhesive tape, means for removing said tape from the roll and for guiding the tape to the seam supporting'member with the adhesive side of the tape up, and means 1 you engaging the outside of the seam for applying the tape and causing the adherence there of to the inside of the seam.

3. A shoe machine comprising a back heel seam supporting member, means for holding a roll of adhesive tape, means for removing said tape from the roll and for guiding the tape with the adhesive side up to the seam supporting member, and a common means engaging the outside of the seam for smoothing out the seam and for applying to and causing the adherence of the tape to the inside of the seam.

4. A shoe machinecomprising a back heel seam supporting member, a Wheel for holding a roll of adhesive tape, a cranked arm for engaging the tape and causing the removal thereof from the roll, a tape guide adjacent the seam supporting member, and a common. means engaging the outside of the seam for smoothing out the seam and for applying to and causing the adherence of the tape to the inside of the seam.

5. A shoe machine comprising a back heel seam supporting Wheel, a rotatable s iaft, an .ccentrically mounted feeding member having a grooved lower surface on said shaft, and an eccentrically mounted smoothing member also on said shaft.

6. A shoe machine comprising a back heel seam supporting Wheel, a rotatable shaft, an eccentrically mounted feeding member and an eccentrically mounted sn'ioothing member on said shaft, and a guide finger for en gaging the crease of said seam.

7. A shoe machine comprising a back heel seam supporting Wheel, a rotatable shaft, an eccentrically mounted feeding member and an eccentrically mounted smoothing member on said shaft, and a yieldingly mounted guide finger for engaging the crease of said seam.

8. A shoe machine comprising a back heel seam supporting Wheel, a Wheel for holding a roll of adhesive tape, acranked arm for engaging the tape and causing the removal thereof from the roll, a tape guide having an eye adjacent the seam supporting memher, a rotatable shaft, an eccentrically mounted feeding member and an eccentrically mounted smoothing member on said shaft, a yieldingly mounted guide finger, and means for revolving the rotatable shaft and the cranked arm.

9. Apparatus for applying tape to the ridged back seam of shoe quarters, comprising a presser head, a mandrel disposed beneath said head, and means for guiding the tape upon the mandrel in position to have the ridge of said seam pressed against the tape by said presser head.

10. Apparatus for applying tape to the back seam of shoe quarters, comprising a presser head, a mandrel, and a guide member for guiding the tape upon the mandrel,

said guide having Walls for shielding the Work from contact With the tape at points in advance of the presser head.

11. In a seam pressing machine, the combination with means for supporting Work having a concave-convex formation comprising the pieces to form the heel portion of a shoe upper seamed together by a seam presenting a seam ridge on the concave face of the Work and a seam crease on the convex face of the Work, said means comprising a Work support engaged With the concave face of the Work, of means engaging the convex face of the Work for subjecting the seam ridge to pressure.

12. In a seam pressing machine, the combination With means for supporting adhesive tape and also Work having a concavo-convex formation comprising the pieces to form the heel portion of a shoe upper seamed together by a seam presenting a seam ridge. on the concave face of the Work and a seam crease on the convex face of the Work, said means comprising a Work support engaged With the concave face of the Work, of means engaging the convex face of the Work for subjecting the seam ridge to pressure in contact With the tape on the Work support.

13. In a seam pressing machine, the combination with means for supporting Work having a concave-convex formation comprising the pieces to form the heel portion of a shoe upper seamed together by a seam presenting a seam ridge on the concave face of the Work and a seam crease on the convex face of the Work, said means comprising a Work support engaged with the concave face of the Work, of means engaging the convex face of the Work for securing adhesive tape to the seam ridge.

14. In a seam pressing machine, the combination With means for supporting adhesive tape and also Work having a concavo-conveX formation comprising the pieces to form the heel portion of a shoe upper seamed together by a seam presenting a seam ridge on the concave face of the Work and a seam crease on the convex face of the Work, said means comprising a Work support engaged With the concave face of the Work, of means engaging the convex face of the Work to press the seam ridge nogressively, simultaneously secure adhesively coated tape to the seam ridge and cause the tape to be adhesively secured to the concave face of the Work on opposite sides of the seam ridge.

In testimony whereof I afiix my signature.

BENJAMIN H. HERBSTER.

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