US1579496A - Creasing and hemming machine - Google Patents

Description

W. WADE CREASING AND HEMMING MACHINE A ri 6 192s. 1,579,496

Filed July 6, 1925 2 Shegts-Sheei 1 W. WADE CREASING AND HEMMING MACHINE April 6 19 26.

2 Sheets-Sheet 2 Filed July 6, 1925 Patented Apr. 6, 1926.

UNITED l s ATEs wILL'IA WADE, or" CHICAGO, Immora cnnasme AND magma MAGHIifTE.

Application file d July 6, 1925. Serial Noi. 41,499. I

To all whom it may concern:

Be it knownthat I, WILLIAM WAnE, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, haveeinvented certain new and useful Improvements in Creasingand Hemming Machines, of which the following is a description, reference being-had to' the accompanying drawings, which form a part of my specification. I

V My invention relates to a machine for creasing and hemming fabric .aJn'd'inore especially the fabric or 'mater'ial'employed for window shades, preparatory to receiving theusual stick or slat at the free or cord receiving end of the shade.)

' My invention'has for its object the pro-' vision of a machine-whereby the fabricor' shades may be provided with a uniform and standard sized hem which'may'be more quickly produced than has heretofore been the case with the method or practice of forming liems manually; and'as a result of my invention, the frequent soiling of the fabric or shade material by the hands of the operator is prevented and-considerable" time and labor saved.

The objects and advantages of my invention will all be more fully comprehended from the detailed description oftheaccompanying drawings, wherein r Figure 1 is a perspective view of my improved machine, with aportionof the bed plate or table broken away. i

Figure 2 illustrates, in perspective, a portion of fabric or shade, showing the type of the hem produced.

Figure 3 is a detail perspective view taken on the line 33 of Figure 1 looking in the direction of the arrows.

Figure 4 is a detail perspective view taken on the line t-4 of Figure 1 looking in the direction of the arrows.

Figure 5 is a detail the crease and hem forming portion of the machine; illustrating'the initial step or ac tion.

Figure 6 is a similar view showing the second stage or step :'in thecrease forming operation. V

Figure 7 is a similar perspective view i1- lustrating the third or fin'al. stage of the crease forming operation and the position of the creasing perspective view of nism.

In the particular 'exemplific'ation of the I inventionas illustrated in the drawings,'it

and hem producing mecha PAT NT oFFIcE'.

comprisesa suitable table 10of widtha'n'd I length sufficient to receive the sheets of fabric or window shades which'it is intend ed to crease and hem; :the construction illustrated being more particularly adapted for the creasinguand hemming of-wi-ndow shades which are previously cutt'o'fsize and of predetermined width.

In operation, the-shade material, "which is usually rolled, is placed on the tablev and inorder' to prevent the' rolls of material fromfalling oif the table, (where the latter isnot in contact at the rear side with a wall orpartition), I have shown the table or bed plate 10 provided with an upstanding ledge 11 along what may be-termed the rear side.

namely the side opposite to that at which the operator is located. The composite table ortop 10, which is supportedby any suitable framework or standardslasat 12, 7

comprises, in addition to the main part or rear section 13, a metallic strip 13 stationarily mounted; a metallic strip or section 14 of suitable width and yieldingly mounted on the cross-members 12 soasto permit a transversely shifting thereof, as is also true with-the section or' metallic' strip 15 whichmaybe of any desired width andwhich con stitutes a portion of the creasing mechanism; while the side or portion'of the table 7 or top 10 adjacent to the operator comprises an immovable sectionfor board 16 suitably supported and secured to the'top cross members'of the supporting frame or standard. The-'sections1'3, 14 and 15 are preferably metal plates or bars. i

. of the machine. The ends of the cross-bar 20 are provided with rods 22, 22, disposed upwardly through suitable openings in the plate or section 14. The upper ends of the rods are provided, with a cross-strip or member 23 which may be held in place in any suitable manner, as for example by the nuts 24 secured on the upper threaded end of the rods 22. The sides of the cross-strip or member 23 are shown provided with the plates 25, 25 secured to the block or strip 23 in any suitable manner so as to have the lower longitudinal edges of theplates 25 depend beneath the strip 23 which latter is substantially of the same or slightly greater width than the width of the strip or table section 14, so that the depending longitudinal edges of the plates 25, may enter the slots 26, 26 on opposite sides ofthe strip or table section 14 when the foottreadle or pedal 19 is depressed, which in turn depresses cross-bar 20 thereby moving the composite fabric or shade controlling element, composed of the block 23 and plates 25, downwardly through the medium of rods 22. As is apparent from the construction shown, if the fabric or window shade brought beneath the vertically reciprocating element, downward movement of the element will cause the fabric, or window shade indicated at A, to be forced down into the slots 26 as shown in Figure 5. The strip or table section 14 is yieldingly held in normal position relative to the permanently fixed portion 13 by means of one or more springs as shown at 27, see Figure 3; the cross bar 20 with the connecting rods 22 having suflicient play to permit the slight lateral movement of the various elements referred, to.

The strip or section 15 is shown provided with a. pin or lug 28 (see Figure to which one end of a spring 29 is secured. while the other end of the spring is secured to an immovable portion of the table or supporting frame. A similar arrangement or springris preferably employed at each end of the strip 15; and these springs tend to return the strip to normal position, namely in spaced relation with the strip 14.

The supporting frame or standard, beneath the table top, is provided with suitable brackets as at- 30, in Figure 1, to support a rocker shaft or rod 31 which, at a convenient point, is provided with an operating lever or handle 32 fixedly secured to the rod or shaft 31 so as to rock the latter when the lever 32 is oscillated upwardly.

The rod or shaft 31 is also provided with arms 33 fixedly secured thereto; with the upper endsof the arms 33 engaging with the strip 15 so as to cause the latter to move toward strip 14 when rod or shaft 31 is rocked on its axis by the upward movement of lever 32; the strip 15, together with rocker shaft 31 and the hand lever 32, being re turned to normal position through the action of the spring or springs 29. It is apparent that sufficient movement of lever 32 will not only move strip or aw member 15 into juxtaposition with strip 14, but will also of strip 14 andas' aresult definitely crease the material or window shade which has previously been inserted into the slots through the action of the reciprocating composite crease forming head previously described.

In order that the fabric or window shade may be held in place when the crease forming plates 25, 25 of the composite crease forming head come in contact with the fabric or shade, the composite head is shown also involving a fiat strip or plate 34 whichextends full length of the cross strip or member 23 and is yieldingly supported therebeneath by means of the bolts or pins 35 which extend through suitable openings in the cross strip or member 23; the pins or bolts 35 being surrounded each by a. coil spring 36, one end whereof presses on the plate 34 while the other end is seated in the countersunk opening 37 in the cross strip or member 23, thus yieldingly maintaining the plate 34 in spaced relation with the cross strip 23. The length of the pins 35 are preferably such that the plate 34, when in normal position, will be slightly above the lower edges of the pair of plates As is evident from the constructions shown in Fig ures 5 and 6, the plate 34 will press the fabric or window shade material onto the strip 14 and maintain its position while the creaser head is further depressed. (which is permitted bythe compression of the coil springs 36) so as to permit the plates 25, 25 to force the material sufficiently into the slots 26 in order to provide a proper crease in the material.

In operation, the operator places the rolled end of the window shade on the permanent portion 13 of the table and brings the free end of the shade beneath the composite creaser head a distance sufficient to permit of the formation of a suitable hem; he then depresses foot lever 19 so as to bring the composite creaser head into contact with the material, causing plate 34 to hold the material firmly on strip 14 while the plates 25 place the material into the slot 26. Vith the material in this position, as shown in Figure 5, the operator then grasps lever 32- and moves same upwardly so as to rock rocker shaft 31 which causes the arm 33 thereof to force table section or strip 15 toward strip 14. The initial upward movement of lever 32, however, is just sufficient to frictionally hold the material by the strips 15, 14 and the permanent portion 13 of the table, but not sufficient to grip the plates 25, 25 of the composite creaser head which latter is allowed toi move" iipwardlyback to normal position resulting tromthei opering shown in Figure 7. V Upon releasing the foot treadlef19', the compositeicreaser head returns upwardly through-theaction of the springs -38;-one end being secured v to the c1'oss-bar20 .while the other end is secured at a suitable stationarypoint on the supporting frame, at which time the operator applies greater upward pressure .on

hand lever 32, causing strip 15 of the table top. to grip the material between strip 15 and strip 14 whilethe latter has simultaneously been moved into juxtaposition with'the permanent table-portion- 13-so that a pair of heavy or very defined creases are formed in the material or window shade, with the result that. whenthe hand lever 32! is released and-the strips" 14 and 15 returned to normal separated position, the window shade material will automatically fold over into the conditionshownin-Figure '2 and thus The hem is then stitched in' place at the junetureuof the operations a and b and the window, shade. is then ready to receive the usual strip'or slat for the cord-receiving end v 1 grooves to receive the .upper end's of the arms 33 which" engagewith the edge of the V of thewindow shade.,. g

Inorder that hems :of difierentwidtlis may be made, 1' providea. gauge or control mechanism shown. in the particular exemplification in the ,form of the threaded pins or bolts 39: secured, to the cross-bar 20 and passing upwardly through apertured' ans gle members 40 which are secured to the standards or uprights A12, 1 The-pins or bolts 39 are of comparative length and are 40 and thereby limit-the downward movement of cross-bar 2 0 and hence the downward stroke of the composite head carrying the plates 25, 25; I J Y If the shade or material is to be provided with a comparatively narrow hem, the nuts- 41 are screwed, downon the pins 39 to the desired extent, thereby limiting the degree of insertion of blades .25 into the slots 26.

the two defined creases will be increased as eing the blades are allowed to further pass ,downwardly between the movable table sections in other words, a wider hem is produced when the blades pass downward tova greater;

extent than shown in Figure 5 for example. It will be understood that when the nuts 41 are screwed to the upper endof the pins 39 the crossbar 20 :with the creaser head willthenbe permitted to move so as to pro vide a hem of maximum width; while'adjustments of the nuts to'a point intermediate of the upper end oftheipins and thecross bar'will provide hems of narrower Width. J In order that the movable-sections 14.

and 15 may not be displaced or have longitudinal movement, I provide these sections;

on the -lower surfaces thereof with trans versely disposed blocks or strips 42 at adjacent opposite ends of the sections and disposed to what may be termed the outer sides of the cross members or bars 12,with the blocks or strips 42 engaging with'the cross' members 12 4 while permitting free sliding movement of the sections 14 and 15 j on the cross members a 12. In order that the" crossplates 25, 25 may' move downwardly on opposite sides of the section 14, the plate 25' on what may be termed the rear sidezof the cross head, namely the side disposed toward head I with v q the table portion 13, is provided with cut I outportions-as shown at 43 at points adapted to register with the springs 27, in order that the: plates '25 -will not interfere with the springs 27.; and the front stationary section or board 1 6 of the table top-on theflower side is provided with cutout portions or metallic plate or section 15;

My improved-machine 1s adapted to provide the window shade: or -material with either "a single hem as-shown in Figure 2 or with what may becalled a duplex hem where the material is folded once more uponjitself',

but in the opposite direction, this type oi hem being provided by turning the material or window shade over and creasing'itin the opposite direction. 1th my improved 1nachine, itis apparent that a hem disposed at all times be formed regardless of whether ornot the free end- 0f the window shade is out true, as the creasing and hemming operation is usually formed with the window shade rolled up with the exception of the free or slat receiving "end which is to be provided with the hem, The shade being rolled up in the manner stated, may be placed by the operator-against the rear sideof the creaser head so 'asto be aligned therer "with (the window shade being rolled up properly) thus'inducinglthe hem to-be properly disposed, namely at ri'ght anglesto-the sides ofthe shade; .As thematerial is forced into the slots 26, it is evident that when the movable sections are brought into juxtaposition .and into close relation with the nonmovable section 13 that the window shade will be given a very defined crease which will induce the material or window shade to fold upon itself and thus automatically pro vide .the hem and therefore obviate the necessity for manually folding the material over, which operation is at present in use and results in serious injuries to the hands of the operator because of the constant frictional contact with the shade material in producing adefinite crease and hem.

I have shown what I believe to be a simple adaptation of my invention, which has been described in terms employed merely as terms of description and not as terms of limitation, as modifications are possible and may be made without, however, departing from the spirit of my invention.

lVhat I claim is:

1. A creasing and hemming machine, comprising a plurality of parallelly arranged crease forming members adapted to move toward each other, means whereby the material to :be creased and hemmed is forced between said members, and means whereby said members'are moved into crease forming relation.

'2. A creasing and hemming machine, comprising a work holding table, a plurality of crease forming members arranged parallel with and in the plane of the tabletop, means whereby the material to be creased'and hemmed is forced between said members, and means whereby said members are moved into'crease forming relation.

3. A creasing and hemming machine, provided with a flat work holding top composed of longitudinal parallel sections normally held in spaced relation, certain of said sections being movable toward each other, means whereby the movable sections may be controlled, and means whereby the material to be creased is forced between said spaced sections and the width of the hem thereby controlled.

i. A creasing and hemming machine, comprising a work holding top composed of stationar and movable sections, the movable sections being adapted to slide transversely toward the stationary section, means for yieldingly maintaining the movable sections in spaced relation with the stationary section and with each other, means for moving the sections toward each other and toward the stationary section, and means for forcing the materialv to be creased between the respective sections.

5. A creasing and hemming machine, comprising a stationary section, a pair of transversely movable sections arranged flush with the stationary section, a lever operably connected to one of said pair of movable sections whereby the latter are forced toward each other andgtoward the stationary section,

springs for normally holding the sections in spaced relation, a head reciprocatingly mounted above the sections and provided with material engaging longitudinal edges adapted to force the material between the sections, and means for reciprocating the head. 1

6. In a crcasingand hemming machine, a work holding table composed of longitudinal sections normally arranged in spaced lelation so as to provide material receiving slots, certain of said sections being movable toward each other so as to crease the material thcrebetween, means for forcing the material into said slots composed of spaced vertically arranged plates, a yieldingly held presser plate intermediate of the vertically arranged plates whereby the material is held on'one of said movable sections, the vertically arranged plates and presser plate being mounted to move as a unit toward and away from the movable sections, means whereby the movable sections are controlled, and means whereby the first mentioned means are controlled.

7. A creasing and hemming machine, comprising a work holding table having stationary and movable sections, the movable sections being normally held in spaced relation with .each other and with the stationary section whereby material receiving slots are provided lengthwise of the table, a recip rocating head disposed aboveone of the movable sections and provided with material engaging members laterally spaced apart a distance slightly greater than the width of said movable top section for forcing the material downward on opposite sides of said movable section, a pressure applying plate yieldingly mounted intermediate of the members of said head whereby the material is held in firm relation with said movable section, means for moving said head downwardly into contact with said material, and means whereby the movable sections are forced toward each other and toward the station-ary section.

8. A creasing and hemming machine, comprising a work holding table, a plurality of crease forming members arranged parallel with and in the plane of the table top, means for normally maintaining said crease forming members in spaced relation, means whereby the material to be creased and hemmed is forced between said members, means for determining the extent of operation of said second mentioned means, and means whereby said members are moved into crease forming relation.

9. A creasing and hemming machine, comprising a work holding top composed of stationary and movable sec'tioins,'the movable sections being adapted "to slide transversely toward each other and toward the stationary section, means for preventing longitudinal movement of said movable sections, means for yieldingly maintaining the movable sections in spaced relation with each other and with the stationary section, means for moving the movable sections toward each other and toward the stationary section, material lable means whereby the extent of reciprocation of said last mentioned means may be controlled, 'and'means whereby said reciprocable means is operated.

WILLIAM WADE.

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