US1281654A - Skiving and folding machine. - Google Patents

Description

D. N. PRIME.

SMVING AND FOLDING MACHINE.

APPLICATION FILED MAR. 1. I916.

1,281,654. I Patentgd 0013.15, 1918.

4 SHEETS-SHEET l- D. N. PRIME.

SKIVING AND FOLDING MACHINE.

APPLICATION FILED MAR. I. 1916.

Patented Oct. 15, 1918.

4 SHEETS-SHEET 2.

VHVTUE. [EM/k" D. N. PRIME.

SKIVING AND FOLDING MACHINE.

APPLICATION FILED MAR. 1. I9I6- 1,281,654. v Patented Oct. 15, 1918.

4 SHEETS-SHEET 3.

D. N. PRIME.

.SKIVING AND FOLDING MACHINE.

APPLICATION FILED IIIAR. I. I9l6- Patented Oct. 15, 1918.

4 SHEETS-SHEET 4.

in connection with the DANIEL IL PRIME, OF LYNN, MASSACHUSETTS, ASSIGNOB IBY T0 UNTTED SHOE MACHINERY cORroRA'rIoN, 0F PATERSON,

POBATION OF NEW JERSEY.

M sNE ASSIGNMENTS, NEW JERSEY, A G R- SKIVING AND FOLDING MACHINE. I a

Application fi led March 7, 1916.

To all whom it may concern Be it known that I, DA IEL N. a citizen of the United Lynn, in the county of Essex and State of Massachusetts, have invented certain Ima provements in Skiving and Folding Machines, of which the following description,

accompanying drawings, is a Specification, like reference characters on the drawings indicating like parts in the several figures. V

This invention relates to machines for finishing the edges of sheet material and is herein illustrated in connection with a machine for skiving, folding and pressing the margin of a part of the upper of a shoe and for introducing into the fold prior to the pressing operation an adhesive filament.

Hitherto it has been customary to apply cement in liquid form to the skived margin of a piece of upper said piece to the folding instrumentalities of a folding machine. Attempts to embody cement applying apparatus in such a ma chine have thus far not met with success for various reasons, among others for the reason that liquid cement which will properly stick down the flap of the fold requires an interval for drying cation to the material and the time of the folding and pressing operations in order to render it properly tacky.

According to one feature of the invention an adhesive filament is introduced into the fold, after which cooperating pressing members relatively movable toward and from each other grip and press the fold and the inclosed filament. By making use in this manner of an adhesive filament which is normally tacky but not wet, the operation of cementing the margin in themanner hitherto practised may be dispensed with.

Anothenfeature of the invention relates to the provision in a machine-of this type of means for skiving the margin of the material prior to folding the margin and introducing into the fold the adhesive filament. With this combination of mechanisms the skiving operation, as commonly carried out on a separate machine, is no longer necessary.

These and other PRIM features of the invention,

including certain details of construction and w Specification of Letters Patent.

States, residing at leather before presenting between the time of its appli- Patented oat. 15,1918.

Serial No. 82,7 53.

combinations of parts will be described as embodied in an illustrative machine and pointed out in the appended claims.

' Referring to the accompanying draw- 1ngs,-

Figure which the present invention is embodied;/

. Fig. 2 is a plan view, the overhanging arm having been broken away;

Fig. 3 is a section on the'line 3-3 of Fig. 1; a

Fig. 4 is a section on the line 44 of Fig. 1;

Fig. 5 is a section on the line 55 of Fig. 1';

Fig. 6 is a detail, partly in section, of the grippers which press the fold and feed the stock;

Fig. 7 is a perspective from above of the skiving, tape applying and fold forming and pressing elements;

Fig. 8 is a perspective from beneath of the tape applying, folding and pressing elements.

The illustrative machine is adapted to skive the margin of a piece of flexible material, to fold the'skived margin over a piece of adhesive tape, and to press-the fold thus formed, the purpose of the tape being primarily to hold the flap of th'e'fold firmly attached to the body of the material thereby avoiding the necessity which has hitherto existed of applying cement to the skived margin prior to the folding operation.

Referring first to Fig. 1, the skiving mechanism is similar to that shown in United States patent to Alexander No. 1,079,462 and comprises a hollow base 1 having a fiat top through which protrudes acylindrical skiving knife 7.. A feed roll 9 advances the stock to the knife and a presser-foot 11 holds the stock down'on the roll, an edge gage, not

1 is an elevation of a machine in 1 the 'stock. Inasmuch as the details of the skivingmechanism form no part of the present invention and any suitable skiving mechanism may be used, no further description of said mechanismwill be given other than to point out to a shaft 13 and that the feed roll is fast to a shaft 15 which is connected by a worm and gear with a shaft 17 said latter shaft being connected with the shaft 13- by a beltthat the cylindrical knife is fast It will be understood, that the operator faces the machine as viewed in Fig. 1 and 5 presents the stock from left to right with its margin beneath the presser foot 11 and that said margin is skived progressively as the stock is advanced by the feed roll to the nife.

From the skivingmechanism the skived margin of the stock is engaged by a folder 21 by which it is folded about a strip. 23 of adhesive tape, said tape runnin from a reel 25 down around an idle roll 27 and up between twosmall feed rolls 29. The grippers 31, 32 first swi'ngover the fold, then press it, then draw it diagonally upwardly toward the small feed rolls 29, then release the fold and return to the position shown 7 in the drawings. The tape is coated on both sides with adhesive material with the result that the flap of the fold is, by the action of the grippers or pressers 31, 32, stuck firmly to the body of the stock.

With' this brief outline of the mode. of

. operation of the machine the details of the stationary guides 69, the carriage being thus free to slide as well as to move angularly in mechanism for operating the feed rolls 29 and the pressers 31, 32 will now be described.

Referring more particularly to Figs. 1, 4 and 6, an-upright-shaft 33,,driven from the shaft 17 by bevel gears 35, 37, carries fast to it a bevel gear 39 which'meshes with a bevel gear 41 on a horizontal shaft 43 to which are fast ' twogears 45, 47 and a barrel cam 49. The gear 47 meshes with a gear 51 of the same size said gear being integral with a sleeve 53 upon the farther end of- '31, 32 as well as to move them bodily in the direction of the line of feed, are set onedegrees apart and, by

hundred and eighty the gearing which has been described'above, are rotated at the same speed but in opposite directions.

The two grippers orpressers 31, 32 have stems 131,"- 132-which are pivoted at 65in a carriage 67 held between two flat faced any path notprevented by the flat faced guides. Inasmuch as the connectionsjbetween the stems 131 and 132 and. their re .spective cams 55 and 63 are identical, only that between the stem 1-32 and the cam 63 -will 'be described. The upper endv of this latter stem is in the form of a two-part yoke which is connected with a cam follower 69 by trunnions 71, the purpose of which will presently appear. With the construction thus far described it will be clear that rotation of the cams 55 and 63 opens tape 23 and is which bends a portion fold and press and closes the grippers 31, 32 and moves them bodily up and down in an inclined path determined by the flat faced guides 69.

In order to swing the grippers bodily to- '63 and 49 are so timed that a four-motion feed is imparted to the grippers 31, 32, said grippers first swinging from the position shown toward the operator until they are respectively below and above the adjacent portion of the tape and the folded material, then closing uponthe fold, then moving bodily diagonally upward, then opening and moving away from the operator and finally returning to the position shown, this'cycle of movements being repeated continuously as long as power is applied to the shaft 13. Inasmuch as the stem 132 of the gripper 32 extends diagonally across the stem 131 of the gripper 31, the hole in the'stem 132 through which the pivot 65 passes is elongated as shown in- Fig. 6.

The feed rolls 29 are formed by the ends 6 of two small shafts-(see Fig. 3) the upper one of which carries-a bevel gear 77 which meshes with a bevel gear 79 on an inclined shaft 81, to the upper end .of which is fast a bevel gear 83 (see Fig. 2) meshing with a bevel gear 85 fast to that shaft 61. The upper one of the small shafts, the ends of which form the rolls 29 (see Fig. 3), also carries a gear 87 which meshes with a gear 89 on the lower shaft, the bearing of the e lower shaft being pivoted at 91 and urged upwardly by a spring 93 the tension of which may be controlled by a screw 95.

Referring. now more particularly to Figs.

7 and 8, the operation of the machine as a' whole will be explained. As the stock is fed from .left to right, the margin of the stock is skived by the knife 7, the chip or skiving passing under the cutting edge of said knife and The skived margin rides up on the sticky engaged bythe folder 21 down over-the edge of the tape and up eneath the same thereby-forming the fold in of the skived mar 'nthe skived stock above it.

the stock 100. The grippers 31, 32 then swing toward the tape under the action of the roll 73 andbarrel cam 49, and during this swinging movement the lower gripper 31 tends to wipe the folded over margin into proper'position if it is'not already in such position. The" grippers then close on the the inner surfaces thereof tightly againstthe tape. The grippers are then moved diagonally-upward towardtherolls 29, after which they open, move away 7 from the tape and to their initial-position ready to repeat the cycle ofmove- .ments'. The folded margin passes between faster than do ever,

the rolls 2 9, the body of the stock being supported by the operator until the selected margin thereof has been entirely folded and' pressed. In use the run of tape from the idle roll 27 for a considerable distance back toward the reel is covered by a guard, but this has been omitted from the drawing to promote .clearness.

The movlng parts of the machine are so as the folded edge is fed between them by the grippers, the gripping action of therolls 29 is increased to such an extent that they are capable of taking up any slack in the work but not of feeding the work except as permitted by the roll 9 and grippers 31, 32. The purpose of this mode of operation of the rolls 29 is to permit the machine to be run continuously" while no leath'er piece is being operated upon.

The tape illustrated comprises a strip of fabric coated on both sides with a sticky but comparatively dry adhesive. It should be understood, however, that the particular nature of the adhesive element is immaterial and that by the term adhesive filament 'is included iany adhesive element which may be introduced progressively into the fold. And although particular skiving, folding and pressing mechanisms have been illustrated it should be understood that the invention is not limited in the scope of its application to the particular mechanisms or types of mechanisms shown and described.

Having thus described my invention, 1 claim as new and desire to secure by Letters Patent of the United States;

1. A machine of the class described, having, in combination, fold-forming means, means for introducing into the folda comparatively dry but tacky filament, cooperatmg pressing members relatitgely movable toward and from each other, and means for intermittently causing relative movement between'the members to grip and press the fold and the inclosed filament.

2. A machine of the class. described, having, in combination, means for progressively folding the margin'of a piece of flexible material, means for introducing an adhesive filament into the fold, means for pressing the fold and the inclosed filament, and means for bodily moving the pressing means to feed the material.

3. A machine of the class described, having, in combination, means for progressively folding the margin of a piece of flexible material, means for introducing an adhesive filament into the fold, means for pressing the fold, and the inclosed filament, and

means for bodily moving the pressing means to feed the material and the filament.

4. A machine of the class described, having, in combination, fold forming means, means for introducing into the fold an adhesive filament, cooperating pressing members relatively movable toward and from each other, and means for intermittently causing relativemovement between the members to grip and press the fold and the in: closed filament.

5. A machine of the class described, having, in combination, fold forming means, means'for introducing into the fold an ad "hesive filament, coeperating pressing members, and means for swinging one member toward the other to press the adhesive element firmly against both sides of the interior of the fold.

6. A machine of the class described, having, in combination, means for forming a fold in the margin of a piece of flexible material, means for introducing into the fold an adhesive filament, coiiperating fold-pressing members, a pivot on which one member is mounted and about which it may move into and out of contact with the work, and means for moving said last-named member about its pivot to press the fold and the inclosed filament.

, 7. A machine of the class described, having, in combinatiom means for skiving the edge of a piece of flexible material, means for forming a fold in the margin having the skived edge, and means for introducing into the fold an adhesive filament.

8. A machine of the class described, having, in combination, means for skiving the edge of a piece of fiexiblematerial, means for forming acfold in the margin having the skived edge, means for introducing into the fold an adhesive filament, and means for pressing the fold.

. 9. A machine of the class described, having, in combination, means for skiving the edge of a piece of flexible material, means for forming a fold in the margin having the skived edge, means for introducing into the fold an adhesive filament, and reciprocating means for gripping the fold to press it.

' A machine of the class described, havmg, 1n combination, a stationary folder past I v which the-material is fed, a member located 1n proximity to said folder and located to direct into the fold an adhesive filament, and

- oscillatory means for pressing the filament inside the fold. 11. A machine of the class described, hav- 7 ing, in comb1nati0n,.a stationary folder past which the material is fed, a roll'located in proximity to said folder and located to direct into the fold an adhesive filament, and oscillatory means for pressing the filament inside the fold, I

12. A machine of the class described, having, in combination, means for forming a fold in the margin of a piece of stock, and means for pressing the fold, said last-named means comprisin pivoted gripping members, and means or swinging said members toward each other.

13. A machine for operating upon-parts of boots and shoes, having, in combination, means for feeding apiece of material into position to have its margin operated upon, means for progressively forming a fold in said margin, means for introducing into the fold a dry adhesive filament, cooperating I pressing members, and means for swinging zo

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