US1612429A - Folding machine - Google Patents

Description

Dec. 28 1926.

F. S. GLNES FOLDING MACHINE Filed August 17. 1923 2 Sheets-Sheet 1` F. S. GLINES FOLDING MACHINE Dec. 28 192e. Y 1,612,429 A Filed Augnst 17, 1923 2 Sheets-Shed 2 Patented Dec. 28, 1926.

UME STATES PATENT FFEQE.

FREDERICK S. GLNES, OTE' LYNN, llASSAC-SETTS, ASSEGNOR TO LORENZ MUTHER, OF NEWTON, IJIASSACHUSETTS.

FOLDING MACHINE.

Application filed August 17, 1923.

This invention relates to folding machines and more especially to a folding machine designed with particular reference to folding work of the character shown and described in United States Letters Patent No. 1,400,806, issued Dec. 20, 1921, to Dan Daniels.

In the manufacture `of certain styles of shoes, it is customary to bind the edges of parts of the upper with a strip of fabric so arranged as to give the appearance of a cord which binding` is known as cord binding. The usual method of producing cord linding has been to stitch a piece of tape aa or suitable fabric to the right side of the material to be bound at its edge, then to turn the tape or fabric in a reverse direction over the stitching concealing it and around the edge of the material and to press the u free edge of the tape or fabric upon the reverse side of the material into cemented relation therewith. rlhe cord effect of this work is due to the reverse turning of the binding around the` stitching by which it is secured tothe material and around theJ edge Y but the work must be carefully performed in order to secure evenness.

ln the Daniels patent hereinbefore mentioned cord binding` is secured by providing a galloon or binding having a cordor thiol?- ened portion at one edge and by stitching 1t to the right side lof the material to be bound adjacent the edge thereof, the cord lying 1nside of the stitching and the edge of the material. The edge of the material is then folded over upon the body of the material the line of stitching determining the line of fold. At the same time the free edge of the galloon or binding is carried over by the f1; turning of the edge of the material and is pressed into cemented relation with the reverse side of the body portion of the material.

rlhe main object of the invention is the provision of a machine adapted for folding work of the character shown and described in the said Baniels patent.

Other objects of the invention will be more specilically set forth and described hereinafter.

ln the drawings illustrating one form of my invention, Figure 1 is a side elevation of the operative end of a machine constructed and adapted to ope-rate in accordance 55 with my invention as viewed from the opera- Serial No. 657,925.

toi-s seat; Fig. 2 is an end elevation of the same looking from left to right in Fig. 1; Fig. 3 is a plan view of the end of the lower arm of the machine and the operative parts mounted thereon; Fig. 4 is a plan view partly in section on an enlarged scale of the end of the low r arm showing a piece of work being folded; Fig. 5 is a cross sectional view of a piece of work of the character described in the Daniels patent in the position in which the worlr is presented to the machine; Fig. 6 is a similar view after ,the binding and edge of the material have been turned into a position perpendicular to the main body of the material; Fig. 7 is a similar view after the binding and turned edge of the' material have been pressed down upon the body portion and Fig. 8 is a plan view of a portion of the finished material.

My invention is herein illustrated as applied to a folding machine of the general type shown and described in United States Letter Patent No. 1,294,919, issued to William F. Lautenschlager in February 18, 1919, and therefore only that end of the machine containing the folding instrumentalities is shown since the actuating means for operating such of the folding instrumentalities as have motion are utilized in the present machine.

Referring to the drawings, 10 designatesv a lower arm and 12 an upper arm of the frame of the machine. Upon the end of the lower arm 10 is a work-support which may be made in two parts 14 and 15 secured in place by screws 16. A main shaft 17 is rotatably mounted in the lower arm and a rockshaft 18 and a lift-shaft 19 are carried by the upper arm.

The operative instrumentalities comprise means for feeding the material to be bound through the machine consisting of a feedfoot 2O which co-operates with an idler roll 21, ar presser-foot 22 for holding the work between the feeding movements, a fold-turner or plow 23 for turning upwardly and then downwardly the edge of the material and the binding, a hold-down member 24 adapted to engage the work at the line of fold to hold the work down at that point and a pressing member 25 for pressing the turned-over edge of the material and the binding down upon the body portion of the material in cemented relation therewith.

The feed-foot 20 has a right-angled feeding face and is formed on the end of a feedbar 28 which is loosely mounted for reciprocation in a housing 29 carried by a bracket 30 fastened to the lift-shaft 19 by a screw 31. The rocking of the feed-shaft rocks the housing and imparts to the feed-bar and feedfoot a forward and backward movement. For imparting reciprocating movement to the feed-bar 28 in the housing` 29 from the lift-shaft 19, the following means may be provided. A split collar 32 may be secured to the upper end of the feed-bar 28 by a sc rew 34. In the collar is mounted a screw pin 35 carrying a block 36 adapted to ride in the upper yoked end of a link 37 pivotally cemented at its lowerI end by a pin 38 to an arm 39 fixed on the end of the lift-shaft 19. The rocking of the lift-shaft imparts, through the foregoing means, reciprocatory movement to the feed-bar in the housing. In ord-er to hold the feed-bar in a lowermost position at all times, a hood 40 may be fastened by a screw l1 to the link 87, said hood extending over the upper end of the feed-bar at a slight distance thereabove in order to permit a spring 4t2 to be inserted between the end of the hood and the feed-bar; the upper end of the bar being recessed to receive the lower end of the spring.

As a result of the foregoing construction and of the prop-er Vtiming of the rocking movements of the feed-shaft and the liftshaft respectively, the feed-foot is given a four-motion movement. In its initial starting position the feed-foot is down engaging the work. lts first movement from the initial or starting position is a forward feeding movement (away from the operator) thereby feeding the work one step in the machine, at the end of which the operation of the lift-shaft causes' the feed-foot to be raised from the work and to be held in a raised position during the return movement toward the operator when the feed-foot is permitted to descend and to engage the work again in its initial position. In feeding the material the feed-foot co-operates with the idler roll 21 which is held loosely mounted on the end of the lower arm 10 by a screw stud 14e and a washer 45.

The presser-foot 22 is formed on the end of a presser-arm 50, which may be made integral with a lever 51, the said lever and presser-arm beine* mounted at their junction upon a short-shaft in a suitable bearing 53 in the upper arm 12. rlhreaded in the lever 51 is a screw with a check nut 56 to hold it in an adjusted position. At its inner end the screw 5o is adapted to engage a short arm 57 fixed on the lift-shaft. Through the medium of these parts the lever is rocked by the oscillation of the lift-shaft to raise and lower the presser-arm and the presserfoot and the machine is so timed that the presser-foot is down and holds the work between the feeding movements. To hold'the lever in such position that the end of the screw bears at all times against the arm on the lift-shaft a. spring 58 set in a hollow screw 59 bears against the upper portion of the lever. The screw is threaded through an arm 60 forming a part of the upper arm of the machine and the pressure exerted upon the lever 51 by the spring may be adjusted by turning the screw one way or the other and then locking it in adjusted position by a set nut 62. A lever 63 may be secured by a screw 641A to the end of the shaft 52, to which lever may be attached a chain adapted to be operated by a foot treadle to permit the presser-foot to be raised by the operator for the purpose of inserting the work in the niachine. In this operation the presser-foot engages the shoulder G5 of the presser-bar and raises the fee l-foot at the same time.

The fold-turner or plow 23 is of the usual form so far its turning surface is concerned but its base is extended toward the operator and provided with an end surface 66' parallel to the normal line of feed whiel surface acts as a guide to give the binding a preliminary upward turning as the work is fed through the machine. rlhe plow is provided with a slot 67 and is held in place by a screw 68, the slot permitting adjustment of the plow to and from the feed-foot.

The hold-down member 24 is in the form of an arm loosely mounted on a screw 70 threaded into the junction of the presserarm 50 and lever 51, the hold-down member extending toward the operator and being curved over downwardly and forwardly to engage the material between the feed-foot and the plow. A light spring 71, attached at one encl to the tail 72 of the hold-down member and at its upper end to a hook 73 set in the lever 51, holds the member in a downward position yet being light permits it to yield when a thickened portion of the work or a seam passes under its point. Upon the forward portion of the hold-down niember 24e is arranged a small transverse arm 75 provided with a threaded hole adapted to receive a small screw so located as to bear upon the top surface of the plow 23. rilhis screw acts as a stop to regulate the lowermost position of the operative end of the hold-down member which position may be adjusted by turning the screw one way or the other.

rlthe presser member 25 is pivotally mounted midway upon a. screw shaft 78 set in suitable bearings 79 and St) upon the upper face of the lower arm and is operated from the main shaft by suitable connections. Eccentrically set in the end of the main shaft- 17 is a screw pin 81 carrying a. collar 82 provided with ears whereby it is i, `votally connected by a pin 83 to a yoked link 84 which in turn is pivotally connected at its upper end by a screw stud 85 to a link 86 which is connected by a screw stud 87 to the rear end of the pressing member 25. The rotation of the main shaft through the link connections imparts an up and down movement to the pressing member.

For the purpose of imparting resiliency to the pressing member 25 so that when thickened portions of the work pass under its pressing surface it may yield slightly, it is mounted at its fulcrum point. For this purpose the pressing member 25 is provided* with a vertically elongated opening 89 at its fulcrum to receive a bearing-collar 90 fitting the i'ixed screw shaft Z8 and is therefore movable upwardly and downwardly to a limited extent in a vertical direction upon the bearing-collar 90. Rearwardly of the fulcrum point the pressing member is provided with a. depending curved yoke 91 having its lower end bored and threaded to receive a hollow screw stud 92, within which is mounted a helical spring` 93 bearing against the lower end of a lJ-shaped yoke 0e, which latter yoke lies within the curved yoke 91. The upper end of the yoke 94 lies between two ears formed on the under side of the pressing member 25 to prevent lateral displacement and bears against the bearing collar 90 upon the stud shaft 7S. The tendency of the spring 93 is to hold the pressing member down upon the bearing collar bnt the slot or opening 89 permits the pressing member to rise slightly at the fulcrum against the pressure of the spring 93 at the fulcrum point when thickened portions of the work pass under the nos-e of the hammer. The pressure exerted by the spring 93 may be regulated by adjustment of the screw stud 92 in one direction or the other.

ln doing work of the character described in the Daniels patent, it is important that the operative instrumentalit'es be so arranged as to 'effect the folding on the line of stitching securing the galloon or binding to the material and this arrangement will be more particularly pointed out in the following description of the operation of the machine, reference being made especially to Figures t to S of the drawings.

ln Figure 5 the work is shown in its condition after the binding has been stitched to the material; 100 representing the body portion of the material to which the binding is applied, 101 the binding made up of astrip of tape folded longitudinally about ay cord 102 and 103 the stitching securing the bind.- ing to the material adjacent its edge. ln this condition the work is presented to the machine with the right sid-e of the material downward and the binding extending outwardly as shown in Figure 5. ln placing the work in the machine, the operator raises the feed-foot, presser-foot and hold-down member by operating the lever 63 and arranges the work upon t-he work-support in such position that the feed-foot when it descends to grip the work will press the material adjacent the cord 102 down upon the idler roll. This naturally throws tne cord to the right into the position shown in Figure 6 and breaks the material on the line of stitching 103 which serves as a scored line to determine the line of fold. During the 'feeding movement the feed-foot 20 and holddown member 24 are in the respective positions with relation to the work as shown in Figure 0, the latter member engaging the line ofrstitching 103, and serving to guide the material thereby. As the binding strikes the face 66 of the plow 23 it is given an upward turn as shown in Figure 6 preparatory to being turned downwardly by the plow in its forward progress in order to receive the pressing action of the pressing member 25.

Figure illust-rates the condition of the finished work at the conclusion of the pressing operation. It will be noticed that the corded edge of the binding is thrown outwardly in the feeding operation so thatit lies on the middle of the folded edge and therefore presents the appearance in the finished work shown in Figure S.

Since no-t only the binding but the edge of the material 100is folded over, it is important that the break of the material on the line of stitching be held after the material has been advanced in the feeding movement beyond the hold-down member and to accomplish this end the feed-foot is made rightangled or in effect provided with an extension which projects toward the plow and in advance of the hold-down member. The edge of this extension nearest the plow is preferably in alignment with that face of the hold-down member nearest the plow so that after the material has advanced beyond the hold-down member the extension on the feed-foot holds the body portion of the niaterial down and maintains the break on the line of stitching, thus preventing the material from straightening out until the upturned edge of the material and the binding have been turned over toward the body portion by the plow and pressed into cemented relation therewith. The hold-down member and feed-foot are arranged in close juxtaposition almost in engagement with each other and these two members are arranged at a distance from the plow just suiiicient to permit of the passage of the upturned binding between them. rIhe breaking of the material on the line of stitching is therefore accomplished in the first instance by the pressure exerted on the body of the material by the feed-foot and is maintained by the holddown member and by the extension on the feed-foot until the turning operation Ahas been completede i Although the machine herein described is designed primarily for holding work of the character shown in the Daniels patent, yet it may be used for various other kinds of work and it is to be understood that my invention may be embodied in forms of construction other than that herein shown, all within the scope of the following claims.

l/Vhat I claim is l. In a folding machine, the combination of a feeding member having an L-shaped feeding surface for feeding the material to be folded, means for turning over the edge of said material, resilient means for holding down the material as it is fed, said means engaging the material within the angle of said feeding surface between it and said turning means, and means for pressing said turned over edge upon the body portion of said material.

2. in a folding machine, the combination of a member for feeding the material to be folded, said men'iber having an l.-shaped feeding surface with the foot of the L disposed forwardly, means for urning over the edge to be folded, a spring-pressed hold down member for engaging the material continuously within the angle of said feeding surface between said feeding surface and said turning means, and means for pressing said turned over edge down upon the body portion of said material.

3. fn a folding machine, the combination of n'ieans for feeding material having a corded binding attachedV by stitching at one edge of the right side thereof, said feeding means having an L-shaped feeding surface adapted when engaging the material to throw said corded binding outwardly and upwardly and to break the material on the line of said stitching, means for turning over the edge of the material and the binding toward the body portion thereof, spring-pressed means for engaging the material between said feeding means and said turning means along the line of stitching to hold it down as it is fed, and .means for pressing said edge and said binding down upon the said'body portion.

t. in a folding machine, the combination of means for feeding material having a corded binding attached by stitching at one edge of the right side thereof, said feeding means being adapted to throw said corded binding outwardly and to break the material on the line of said stitching, a plow for turning the edge of the material and the binding upnv'ardly and downwardly toward the body portion of the material, a hold-down Incinber arranged between the feeding means and said plow for holding down the material upon said line of stitching and means for pressing said edge and said binding upon the said body portion; said hold-down member extending toward the operator and being curved downwardly to engage the work continuously, but being so mounted as to yield when thickerl portions of the work pass thereunder.

5. In a folding machine, the combination of means for feeding material having a corded binding attached to the edge thereof, said feeding means being adapted to break the material inside the corded binding and to throw it outwardly, means for turning the edge of the material and the binding over upon the body portion of the material, a spring-pressed arm pivotally mounted above the work and extending toward the operator and curved downwardly, 'the engaging end of said arm being intern'iediate the said feeding means and the said turning means for holding down the material at the'line of break, said means including an extension carried by said feeding means, and means for pressing said edge and said binding upon the said body portion.

6. in a folding machine, the combination of means for feeding material having a corded binding attached by stitching to the enge thereof, said feeding means being adapted to break the material o-n said line of stitching, means for turning over the edge of the material and the binding toward the bodyportion thereof, resilient means inte 'posed between said feeding means and said turning means for continuously engaging the material on said line of stitching for holding said material in broken condition, and means for pressing the edge of the material and the binding down upon the body portiony thereof.

7. in a folding machine, the combination of means for feeding material having a corded binding attached by stitching to the edge thereof, said feeding means being adapted by engagement with the reverse side of said material to break it on said line of stitching and to throw said corded portion outwardly from said material to form a corded edge, a pivot-ally mounted arm extending toward the ope'ator and curving downwardly to engage said material on said line of stitching, a spring for holding said arm at all times in engagement with said material, yet permittii it to yield for thicker portions of the w rk, means for turning the free edges of the material and the binding over toward the reverse side of said material and means for pressing the same down upon the body portion of said material; said arm being so arranged that its free end is in close proximity to said feeding' means and said turning means and between the same and said feeding means being provided with a lateral extension for preserring the break in said material on the said line of stitching forward said arm.

In witness whereof, I hereunto set my hand this 9th day of July, i923.

FREEERICK S. GLINES.

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