US1734848A

US1734848A - Machine for cutting ribbons from bias or straight-woven textile fabric, leather, rubber, or other similar materials

Info

Publication number: US1734848A
Application number: US124275A
Authority: US
Inventors: Brandon Stephen Andre
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-12-29
Filing date: 1926-07-22
Publication date: 1929-11-05
Anticipated expiration: 1946-11-05
Also published as: FR608765A

Description

1929' s. A. BRANDON ,734,4

MACHINE FOR CUTTING masons mom BIAS OR STRAIGHT WOVEN TEXTILE FABRIC, LEATHER, RUBBER, OR OTHER SIMILAR MATERIALS Filed July'22, 1926 3 Sheets-Sheet 1 Nov. 5, 1929. s. A. BRANDON 1,734,848

MACHINE FOR CUTTING RI'BBONS FROM BIAS OR STRAIGHT WOVEN TEXTILE FABRIC, LEATHER, RUBBER,

OR OTHER SIMILAR MATERIALS Filed July 222, 1926 5 Sheets-Sheet 2 Nbv. 5, 1929.

MACHINE FOR CUT WOVEN TEXTILE FABRI LEATHER,

OR OTHER SIMILAR TERIA Filed July 22, I 26' -S. A. TING RI BRANDON BB FROM BIAS OR RUBBE L5 3 Sheets-Shget 5 Patented Nov. 5, 1929 STEPHEN ANDRE BRANDON, or nnnsnAY-s' n-sAn'rnn, ,ERANGE LEATHER, RUBBER, OR OTHER SIMILAR MATERIALS Application filed July 22, 1926, Serial No. 124,275, and in has, December 29, 1925.

The present invention relates to improvements in machines for cutting ribbons, whether of fabric, leather, rubber or other similar materials, which machines are most generally 5 used in the manufacture of bias-textile ribbons. It is often necessary that the bias-portions of fabric used in dressmaking, millinery and the like shall have a certain length, but when these biases are cut by hand in the piece of fabric, it is evident that their length cannot be greater than that of the bias taken from one selvedge to the'other of the fabric and this length, of course, may vary according to the width of the fabric. In order to obtain bias-pieces of a relatively considerable length it is necessary to sew a certain number of bias-pieces to eachother; but this operation is time-consuming and expensive, so that, with a View to expediting the work and as reducing the cost thereof,'it has been proposed to cut, out of the fabric, strips bounded on the f one hand, by the selvedges ofthe fabric and on the other hand by two parallel inclined or biased cuts which are spaced apart about one meter and to unite, by a seam, the two sel vedges of the piece of fabric cut in this way. A tubular piece of fabric is thus obtained the basic circumferences .of which are biased. The cutting of the bias piece is effected along b0 one of these bases, one of the edges of the along a spiral so as to enable a bias-ribbon to be obtained, which is continuous from one end to the other of the tubular piece of fabric see French Patent No. 564,008 of March 17, 1923,). It would be difficult and troublesome to effect this cutting operation by hand, so that a machine has been designed and constructed, which can be driven-either mechanically or'by hand, and which eflects this cutting operation by means of a rotary knife, the fabric being guided by the operator himself so as to present it to the knife. Machines of this kind comprise, apart from the rotary knife which is driven by the actuating mechanism of the machine, two feed-rolls upon which is mount- 9 ed the tubular piece of fabric which is to be MAoHmn non CUTTING mesons FROM BIAS on STRAIGHT-WOVEN TEXTILE nABRrc,

cut, one of said rolls being cylindrical, the other is conical so as to permit of the entrainment of-the fabric towards the knife, these two rolls beingrotated in the same direction but in the opposite directionto the knife. A guide is arrangedlin front of the knife'and carries bars which are parallel to each other and between which the edge of the fabric is slid with .an undulating movement so that it is held in a suitable manner against the guide. A spool is mounted in the rear of the rotary knife and is driven by a transmis-I sion mechanism from the driving gear of the machine, whereby it is possible to wind upthe ribbon as it is cut. I a Y It is evident that this machinegives .aconsiderabledegree of eificiency, but the guiding means with which it'i's provided are not sufie cient toensure a uniform entrainment and a uniform cutof the fabric. In addition the constant presence of an attendant is necessary in order that he may, frequently rectify the position of, the edge :of the fabric to be cut! and prevent the fabric itself fromnsliding longitudinally upon the feeder-rolls, either too rapidly or too slowly Ifythe speed oflen-- trainment is too great, pleats willbe formed on the edge of the fabric near the knife and the guide, whereas if the feed is too slowthefv edge of the fabric does not comesatisfactorily into contact with the guide, and the .cut in either case presents irregularities.

The present invention relates to improveform cut, to enable tubular fabric of relative- 1y large width to be out upon a machine of small capacity, and to enable the "cut strip to be turned in, especially in the case ofbi-asstrips, depending upon the form in which the strips are employed in the millinery, dressmaking and clothing industries, as they are, cutand before they are rolled up.

V the guide and from the knife, so that this tubular fabric shall have a tendency to advance longitudinally upon the feed rolls towards the guide.

According to one embodiment of the invention, these means comprise a deflecting rod mounted beneath the table of the machine and capable of oscillating horizontally so as to 'push back to a greater or less extent the portion of material-held by the front feed roll towards the portion of material held by the rear feed roll, the action of this deflecting rod diminishing in intensitytowards the knife.

The invent on also consists in combining, with this deflecting rod, a second deflecting rod arranged almost parallel with the former, and mounted upon a bar which can knife.

pivot thereabout so that, when the portion of material is inserted between the two deflecting rods, a more efficacious. actionnpon the fabric is obtained by the rotation of the bar around the first rod, the bar itself constituting a preliminary lateral guide member for the edge of the fabric before it reaches the guide arranged in front of the knife.

The invention also consists inproviding a supplementary deflecting-rod, shorter in length than the other deflecting-rods, so as to enable it to exert its action upon the end of the tubular piece when this latter comesinto proximity with the guideand'the knife.

The invention also consists in arranging two deflecting-r0dsfparallel one to the other andenabling their longitudinal movement to be effected by the operation of a wheel so that once the material is inserted between them, they feed the. said material in a uniform manner towards the guide and the .The invention also consists in mounting the deflecting-rods in such a manner that they are; fixed and parallel to each other, and to the plane of thefabric, a bar being arranged between them either parallel or obliquely, the said bar being able to move me horizontal plane perpendicularly to the edge of the fabric.

The invention furthermore consists in mounting at the front of the machine an arm oscillating freely around a vertical shaft and bent at its free end so that it can be introduced between the fabric and the folded-back extremity of this latter, thisv arm serving to unfold the extremity of the fabric inaccordance with its advancing movement upon the machine.

In the drawing Fig. 1 is a front elevation ofa machine for cutting'ribbons of any material (biased or ordinary fabric, leather, rubber and the lik embodying the improvements forming the subject of the present invention.

Fig. 2 is a corresponding plan view.

Fig. 3 is a side view.

Fig. 4 is a section along line IVIV of Fig. 2.

Figs. 5 and 6 represent diagrammatically the method of action of the deflectingrods.

Fig. 7 shows diagrammatically the method of action of the unpleating arm.

Figs. 8 and 9 show a modified form of construction of the deflecting-rods. 7

Figs. 10 and 11 show another modified form of the deflecting-rods.

Referring to the drawings:

The machine comprises a table 1 mounted upon a frame 2, said table carrying the various mechanisms necessary for actuating the machine and for the feeding, guiding, and

cuttingof the fabric. The rear feed-roll 6,

is keyed upon the shaft 3 of the pulley 4 which ismounted in suitable bearings 5.. This feedroll 6 is of conical form and its movement is transmitted to the front feed-roll 7 by means of pulleys 8 and 9 and of the belt 10. The frame F is provided with a slot S to enable the tubular fabric to be threadedly engaged from the left of the machine over the rolls 6 and 7 and between the rolls 15 and 16. The slot S is substantially level with the top of the feed roll 6.

The tubular piece of fabric to be cut is mounted upon these feed-rolls 6 and 7. V

The rotary knife 11 is mounted upon a shaft 12 which is driven from shaft 8 through the intermediary of toothed Wheels 13 and 141, said shaft being provided with a rubber cylinder 15-which bears against a cylinder 16 of the same material mounted upon the rear feed-roll 6.

Cylindrical rods

17 and 18 rotating freely upon their axes are arranged respectively in the rear of the front roll 7 and in front of the rear roll 6, so as to facilitate the sliding movement of the material upon these rolls andassist in its transversal movement. The gulding of the edge of the fabric towards the knife is effected by a vertical blade 19 carrying

small bars

20 and 33 by which the edge of the fabric is engaged alternately in such a manner as to ensure efficient guiding of the edge of the fabric into contact with the guide. The periphery of the bar 20, which lies nearest to the rotary knife 11, may, as shown in Figure 2, be roughened in order to prevent the fabric, as it passes over said bar, from becoming displaced longi- A take-up spool for the bias-strip of fab-' ric is arranged in the rear of the knife 11. This spool 141 is pressed by a spring 45' upon a rubber cylinder 46 which serves to drive it, and which itself is driven from the shaft 3 by a belt transmission 47. The drawbacks inherent to the machine so far described will be evident from this brief description. The fabric is engaged by the two feed-rolls 5 and 7', the first of which is tapered so as to'assist in feeding it longitudinally towards the knife and it therefore advances in an irregular manner in this direction and overlaps the guide 19 or moves too far away therefrom so that the operator isobliged to constantly bring back the edge of the fabric to maintain it just in contact with the guide. Furthermore, when the machine receives a tubular piece of'fabri'c of width superior to the length of the machine, the extremity of the fabric is folded upon itself, and it is necessary to remove this pleat by handwhen it approaches the knife. 7

Furthermore, the edge of the fabric during its transverse movement towards the knife is drawn too forcibly towards the guide, with the result that it does not al ways pass along this latter as accurately as is desirable.

Finally, the insertion oft-he edge of the fabric alternately above and below the

bars

20 and 33 of the guide 19 is somewhat difficult.

The improvements now to be described have been devised to obviate. these various drawbacks.

With a view to ensuring a uniform longitudinal feed of the fabric towards the knife, a deflecting rod 22 is mounted upon a vertical shaft 21 fixed to the table 1 of the machine, which deflecting rod 22can oscillate horizontally. Furthermore, abar 23 is fixed upon this deflecting rod 22 in an adjustable manner and a supplementary deflecting-rod- 25 is held in this bar 23 by means of a nut 24, the deflecting bar 25 being arranged almost parallel to the deflecting rod 22 and beingmounted in such a manner-that it can oscillate about the said deflecting rod 22 by the rotation of the bar 23. An adjustable support 26 is mounted upon the shaft 21 and carries a deflecting-rod 27 which is shorter than the deflecting-rod already mentioned.

Assuming the tubular fabric is engaged in the machine as described above and the various rolls rotate, if the roll '6 is conical, as shown, the rod, if parallel to the axis thereof, will increase the natural tendency of the tubular fabric to ride up the portion of largest diameter of the roll. The same effect occurs in belt transmissions, where the pulleys are always barrel shaped. the rod is angularly arranged wlth respect to the longitudinal direction of the tubular fabric, it will obviously deflect the whole of the fabric longitudinally (as if it were an endless belt hanging from a rotating transmission drum) and cause it to move toward the ment of the tubular fabric.

this being to force the fabric to move to-:

wards the guide 19. The advancing movement of the fabric in the longitudinal direction can be varied by setting this bar 23 at a greater or lesser angle relative to'the axis oftherolls 6 and 7. It would also be possible to exert a certain tension upon the? tubular fabric with a view to rendering the advanclng movement of the fabric more regular, care being taken to pass the mate rialbetween the

rods

22 and 25 and'by causing the latter rod to oscillate to a greater or less extent about the deflecting rod 22 as indicated in Fig. 6. The rod 27 plays the same part as the deflecting rod 22 as re-- gards the fabric, but only when it is ad vanced to a sufficient extent to be out of the range of action of the said deflecting rod 22.

The deflecting rods can evidently be arranged in a different manner tothat shown: and described, while at the same time assisting in the longitudinal feeding or entrain- For example, the deflectingrods 22- 25 instead of oscillating aboutthe vertical axis 21 could move. longitudinally so as to ensure the longitudinal entrainment of "the fabric once the latter has been inserted between them.

In this case, as can be seen from 8,

the two deflecting rods 22 and'25 would be and mounted-upon a cross-piece 51 which in turn I 1 would be mounted to oscillate about the extremity of a rod '52 of angular'cross-section and screw-threaded at its end,-this rod being capable of longitudinal movement in its support 54 of corresponding cross-section, without rotating upon itself, under the. action of a hand-wheel 53 which. is held in position upon the support 54. By suitably inclin-' would be exerted by a bar 55 arranged either parallel or obliquely relative to the

rods

22 and 25 and capable of moving in a horizontal plane so as to push back the fabric28 as shown in Fig. 11.

In order to place tubular pieces of fabric of large width in working position upon this machine without increasing its overall dimensions, there is provided an arm 29 which can oscillate upon an axis 30 carried by the table 1, this arm being bent as shown at 31 in Fig. 2. When the width of the tubular fabric 28 being operated upon is greater than the length of the feed-rolls 6 and 7, the extremity of the tubular piece remote from the cutting line is folded upon itself and the inclined extremity 31 of the arm 29 (see Fig. 7) is introduced between the tubular piece 28 and the fold 32.

As the tubular piece advances longitudinal ly towards the guide, the bent portion 31 of the arm 29 pushes back the fold and deforms it, the action of the arm 29 being greatly facilitated by the freedom of its oscillation 7 about its axis 30.

I claim: Y

1. A machine for cutting bias pieces from a tubular fabric, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, a guide for the fabric, a rod pivoted at one end and arranged to engage and urge the material passing over the front feed roll towards the material passing over the rear feed roll'and to deflect the material toward said guide.

2. A machine for cutting bias pieces from a tubular fabric comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, a guide for the fab-,

ric, a rodpivoted at one end and arranged to engage and urge the material passing over the front feed roll towards the material passing over the rear feed roll to deflect it toward said guide, and a second rod between which and the first-mentioned rod the material can be inserted.

e 3. A machine for cutting bias pieces from a tubular fabric, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, a guide for the fabric, a rod pivoted at one end and arranged to engage and urge the material passing over the front feed roll towards the material passing over the rear feed roll to deflect it toward said guide, and a second rod between which and the first-mentioned rod the material can be inserted, said second rodbeing pivotally mounted relative to said first rod.

4. A machine for cutting bias pieces from a tubular fabric, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias-pieces from the advancing edge thereof, a guide for the fabric, a rod pivoted at one end and arranged to engage and urge the material passing over the front feed roll towards the material passing over the rear feed roll to deflect it toward said guide, and a second rod cooperating with said first rod, said rods belng adj ustable to insure uniform motion of the ma-- terial towards the guide and the knife.

5. A machine for cutting bias pieces from a tubular fabric, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, a guide for the fabric, a rod pivoted at one end and arranged to engage and urge the material passing over the front feed roll towards the material passing over the rear feed roll to deflect ittoward said guide, a second rod cooperating with said first rod, said rods being adjuste able to insure uniform motion of the material towards the guide and the knife, and a bar arranged between said rods for pushing back the fabric. I 7

6. A machine for cutting bias pieces from a tubular fabric, comprising front and rear feed rolls for threadedly receivingthe fabric, a knife for cutting said bias-pieces from the advancing edge thereof,-a guide for the fabric, a rod pivoted at one end and arranged to engage and urge the material passing over the front feed roll towards the material passing over the rear feed roll to deflect it toward said guide, a second rod cooperating with said first rod, said rods being adjustable to insure uniform motion of the material towards the guide and the knife, and a bar arranged between said rods and parallel thereto for pushing back the fabric.

7. A machine for cutting bias pieces from a tubular fabric, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, a guide for the fabric, a rod pivoted at one end and'arranged to engage and urge the material passing over the front feed roll towards the material pass ing over the rear feed roll to deflect it to ward said guide, a second rod cooperating with said first rod, said rods being adjustable to ensure uniform motion of the material towards the guideand the knife, and a bar arranged between said rods and at an angle thereto for pushing back the fabric.

8. A machine for cutting bias pieces from tubular fabrics, comprising front and rear feed rolls for threadedly receiving the fabric, a knife'for cutting said bias pieces from the advancing edge thereof, a guide for the fabric, two rods arranged parallel to each other and each pivoted at one end and arranged to engage and urge the material passing over the front feed roll toward the fabric llO fabric, a rod pivoted at one end and arranged to engage and urge the material passing over the front feed roll towards the material passing over the rear feed roll to deflect it toward said guide, a second rod cooperating with said first rod, and means for setting said second rod at a greater or smaller angle relative to the axes of the feed rolls.

10. A machine for cutting bias pieces from tubular fabrics, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, a guide for the fabric, and two rods arranged parallel to each other and each pivoted at one end and arranged to engage and urge the fabric passing over the front feed roll toward the fabric passing over the rear feed roll to deflect the material toward said guide, said rods being adjustable to vary the feed of the fabric. r

11. A machine for cutting bias pieces from tubular fabrics, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, a guide for the fabric, two rods each pivoted at one end and arranged to engage and urge the fabric passing over the front feed roll toward the fabric passing over the rear feed roll to deflect the material toward said guide, and a bar located between said two rods and arranged to push the fabric for the purpose set forth.

12. A machine for cutting bias pieces from tubular fabrics, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, a guide for the fabric, two rods each pivoted at one end and arranged to engage and urge the fabric passing over the front feed roll toward the fabric passing over the rear feed roll to deflect the material toward said guide, and a bar located adjacent said rods and arranged to push the fabric for the purpose set forth, said bar being arranged obliquely to said rods.

13. A machine for cutting bias pieces from tubular fabrics, comprising front and rear feed rolls for threadedly receiving the fabric, a knife for cutting said bias pieces from the advancing edge thereof, and a guide for the fabric, said guide having two sets of bars over and beneath which the fabric passes,

the periphery of the bar nearest to the knife being roughened.

STEPHEN- ANDRE BRANDON.