US2442035A

US2442035A - Taping and seam pressing machine

Info

Publication number: US2442035A
Application number: US618498A
Authority: US
Inventors: John M Calder
Original assignee: Boston Machine Works Co
Current assignee: Boston Machine Works Co
Priority date: 1945-09-25
Filing date: 1945-09-25
Publication date: 1948-05-25
Anticipated expiration: 1965-05-25

Description

May 25, 1948. J. M. CALDER 2,442,035

TAPING AND SEAM PRESSING MACHINE Filed Sept. 25, 1945' 2 Sheets-Sheet l May 25, 1948. J. M. CALDER 0 IAPING AND SEAM PRESSING MACHINE Filed Sept. 25, 1945 2 Sheets-Sheet 2 Patented May 25, 1948 UNITED STATES PA'I'EIJI' I *CFFICE Application September 25, 1945, Serial No. 618,498

7 Claims.

This invention relates to a machine for taping and pressing a seam in an article such as the quarter of a shoe. The quarter portion of a shoe upper is customarily made by stitching together two pieces of leather, the line of stitching becoming the back seam of the quarter. The line of stitching is run along the margin of the two leather pieces close to the edge, this edge being arcuate in form. The two pieces of leather are inside out when the stitching is done, the quarter being thereafter reversed before being incorporated in the upper of a shoe. The present invention has to do with a machine for facilitating the application of an adhesive tape to the seam on the inside of the quarter and for pressing the seam after the tape has been applied so as to flatten out the interior ridge initially formed by the seam within the quarter.

The invention is shown as embodied in a machine having an anvil and a presser with complementary surfaces, the presser being brought into pressing relation with the anvil after the quarter has been placed upon the anvil so that the seam is received in a transverse groove. The anvil is so constructed that when the presser bears upon it, the bottom surface of the groove moves into flush relation with the adjacent surfaces and the seam is strongly pressed soas to be well flattened. The machine is also provided with a guide element adapted to present the end of a tape which is adhesively coated on one face for convenient application to a quarter to be pressed. A tape feeding means is also provided on the machine to save the operator from the necessity of pulling the adhesive tape from the supply roll.

Other features of the invention will be apparent from the foilowing description of an embodiment thereof and from the drawings, of which:

Figure 1 is a side elevation of a machine embodying the invention;

Figure 2 is a section on the line 2 -2 of Figure Figure 3 is a section on the line 3-3 of Figure upper portion of the machine;

Figure 5 is a perspective view of a shoe quarter whichhas been operated upon by the machine;

Figure 6 is a section on the line fit of Figure 4;

Figure '7 is a section on the line il of'Figure 9;

Figiu e 8 is a section on the line 8-? of Figa e V 'gure 4 is a fragmentary front elevation of the 2, Figure 9' is a section on the line 9-9 of Figure 7; V

Figure 10 is a section on the line lit-i0 of Figure 8.

A bench typeqof machine is illustrated in Figure l 1, this machine comprising a frame consisting of a base 29; a short standard 22, and a pair of fixed jaws 24" and 2B. The lower jaw 24 is provided with an anvil 30 which is removable and replaceable by anvils of other sizesor shapes. The anvil 39 is made with an arcuate top surface 32 shaped to fit the rear portion of a shoe upper such as that shown inFigure 5. As indicated in Figure 9 the anvil 30 is preferably made with a central shallow groove extending across the upper surface thereoffrom front to rear. This groove may conveniently be formed by elevating two side blocks 36 and 3B of the anvil slightly above a narrow fixed central. portion 49, the top: surface of which is the bottom of thegroove' 34. The side clocks 36" and 38 which'flanlr the-central portion 40- are preferably spring pressed upward but can be pressed down so that their upper-surfaces are flush with the upper surface of the middle portion fill-,pthesethree upper surfaces then forming a continuous rigid surface. Suitable springs t2 and 44 may beprovided as shown in Figure 9 to maintain the blocks 36: and 38-resi1iently raised until pressed down as hereinafter described. As shown, the springs 42- and M surround portions of: the bolts 45, and 48, the heads of which are adapted to limit the extent of. permissible upward movement of the blocks 36 and 38- and thus to define the raised positions of these blocks. If desired, the anvil may 'berheated by the provision of heating elements and'52 in the blocks 35 and 38 01" elsewhere.

A presser. E lis carried by the upper jaw 25 and is movablevertically toand'from pressing engagementwith the anvil 30. The under surface of the presser 54 is concave so as to be complemental to the convex pressing surface of the anvil St; The pressure .54 maybe operated by any suitable mechanism, mechanical, hydraulic, magnetic, or otherwise. By way ofexample, a simple mechanical means for operatingthe presser is indicated in Figure 1. rockably me'unted at 51 onthe-jaw 26-. The beam isconnected at one end to a shank or rod 553 extendingup: from, the presser, and at the other end to a link. at the, lower end of which is a This comprises a walking beam 56 (not shown). A one-revolution clutch mechanism indicated at 12 is provided to connect the pulley wheel 68 to the shaft 66 to drive the shaft 66 through one revolution each time the clutch is thrown in by actuation of the control rod 14 which leads to a treadle or the like (not shown).

Also mounted onthe shaft 66 is a feed wheel 16 which cooperates with a similar idle wheel 18 to feed a strip of tape 80 from a roll 82 of tape. The roll is on a suitable bracket 84 having a pair of guides 86 to hold it in place. preferably of woven fabric or other strong material coated on one side with a strong adhesive.

The tape is" 4 the quarter, thus forming a new free end to be applied to the next quarter which is brought for pressing.

I claim: 7 l. A machine for taping and pressing shoe quarters, comprising a frame, an anvil on said frame having a convex face adapted to receive and support the rear portion of a shoe counter, said anvil having a fixed narrow central portion the top surface of which is offset below adjacent movable portions to form a shallow groove extending across said face, means on said frame presenting the end portion of a tape at a point The feed rolls 16 and I8 draw a length of tape,

available, the amount thus drawn being su'fmeansfor movmg said presser into pressing en ficient for one application to a shoe quarter.

The surfaces of the rolls 16 and 18 are preferably. corrugated or knurled to provide an adequate grip on the tape which is being fed. The idle roll." is pressed against the roll 16 by a spring 88. 7

0n the front face of the lower jaw is mounted a guide member 90 under which the tape 80 extends so that itsfree endis presented at a point adjacent to the forward edge of the pressing surface 32 of the anvil 30. Between the guide 90 and the pressing surface of the anvil a presser foot 92 bears against the surface of the jaw or anvil, this foot being supported by the upper jaw 26 and downwardly pressed by a suitable spring 94. The presser 54 is provided with a knife blade 96 on its forward face, this blade projecting'sufliciently below the pressing surface of the presser 54 to cut off the tape 80 when the presser descends into' a pressing engagement with the anvil '30.

In using the machine the operator grips a shoe quarter which hasbe'en' turned right side out and applies the leading edge of the quarter at the seam to the free end of the tape 80 adjacent to the forward edge of the anvil. The tape is presented by the guide 90 in proper position for engagement with the quarter, the seam of which is progressively brought into contact with the tape. For this purpose, the tape is arranged at the guide 90 with its stick'y side uppermost. When the leading edge of the quarter is applied to the free end of the 'tape, it adheres thereto and the quarter and tape are pushed toward the rear by the operator so that the quarter'becomes progressively cemented to the tape alon its seam asthe quarter and tape are pushed across the anvil with the scam in the groove 34 When the quarter has been pushed so thatv its leading edge is at or near the'rear edge of the'anvil and the entire length'of the seam is directly over the groove 34, the clutch 12 is engaged to cause a single revolution'of the'shaft 66 together with the cam 64 thereon. As is evident from 'the shape of the cam illustrated in theshaft 86, during which interval of time the heat. and pressure ofthe anvilserve to set the adhesive on the portion of the tape which is in contact withthe quarter. When the presser 64 descends, the knife 96 cuts'oif .the portion of the tape which has been applied to the seam of adjacentto an end of said groove, a presser member supported by said frame above said anvil, said presser member having a concave face complementary to the convex face of the anvil, and

gagement with said anvil so as .to cause rela tive movement between the portions of the convex face to eliminate the offset between said portions during the pressing engagement.

2.A machine of the class described comprising an anvil having a fixed transverse central portion and flanking portions resiliently supported with their top surfaces higher than that of the central portion to form a shallow groove, said flanking portions being movable to a position flush with the top surface of the central portion, a presser movable to engage said anvil and bring the surface portions into flush relation, and means on said anvil for presenting the end of a strip of tape at one end of said groove.

3. A machine of the class described comprising an anvil having a pressing surface, a presser having a complementary pressing surface movable into pressing engagement with said anvil, a tape guide on said anvil near said pressing surface, and a spring-pressed foot engaging the anvil between the pressing surface and the guide.

4. A machine of the class described compris ing an anvil having a pressing surface, a presser having a complementary pressing surface movable into pressing engagement with said anvil, driving means including a one-revolution clutch for said presser, tape feeding means operated by said drivingmeans, a tape guide adjacent to the pressing surface of said anvil, and a spring pressed foot engaging the anvil between the pressing surface and said guide.

5. A machine of the class described compris ing an anvil having a pressing surface, a presser having a complementary pressing surface movable into pressing engagement with said anvil, a support for a supply of tape, a tape guide on said anvil near said pressing surface, and a means carried by said presser for cutting tape on the anvil when the presser moves into engagement with the anvil.

6. A machine of the'class described comprising a frame having a pair of fixed jaws, an'anvil removably mounted on the lower jaw, a presser member movably supported by the upper jaw, means on said frame for moving said presser to and from pressing engagement with said anvil, a tape feeding means on said frame, a tape guiding means on said anvil, and a spring-pressed foot supported by the upper jaw and pressing against the anvil adjacent to the tape guide.

7. A machine of the class described compris- 7 5 ciprocable presser movable into pressing engagement with said anvil, and means for moving said presser to engage said anvil and to press said raised portions down flush with the fixed portions of the anvil.

JOHN M. CALDER.

REFERENCES CITED The following references are of record in the file of this patent:

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