US1471892A - Bead-sewing machine - Google Patents

Description

Get. 23, T1923.

' J. A. GROEBLI BEAD SEWING MACHINE Filed Feb. 18. 1921 6 Sheets-Sheet 1 Oct 23', 1923.

J. A. GROEBLI BEAD SEWING MACHINE Filed Feb. 18. 1921 6 Sheets-Sheet 2 i wvewfo z 4. 294% 31 3 WA/ fll towwq IAWLSQZ J.- A. GROEBLI BEAD SEWING MACH INE Filed Feb. 18 1921 6 Sheets-Sheet 5 33% at owum .llvllullalbhlI llllll.

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J. A. GROEBLI BEAD SEWING MACHINE Filed Feb. 18. 1921 6 Sheets-Sheet 5 MWN - J. A. GROEBL\ BEAD SEWING MACHINE Filed Feb. 18. 1921 v 6 sheets-Sheet e Patented Get. 23, i923.

siren stares ser JOSEPH A. GROEBLI, OF NEVI YORK, N. Y.

BEAD-SEVING MACHINE.

Application filed February 18, 1921.

To all whom it may concerns Be it known that I, JOSEPH A. Gnonsnr, a citizen of the United States, and a resident of the city, county, and State of New York, have invented certain new and useful Improvements in Bead-Sewing 'Machines, of which the following is a specification.

My invention relates to that class of bead-sewing machines which may be designated as single thread machines, that is machines whereby the beads are secured to a. fabric by the same thread upon which they are strung. A machine of this general class is described in my Letters Patent of the United States. No. 1,356,752, dated October 26, 1920. and my present improve ments are particularly directed to means whereby the feeding of the beads along the thread, and their delivery, one at a time, upon the fabric may be accomplished with increased accuracy and precision thereby increasing the etliciency or" the machine. and securing a better product therefrom, all as is hereinafter more fully pointed out and 25 claimed.

In the drawings, Fig. 1 is a side elevation of? a machine embodying my improvements; Fig. 2 is a side elevation, taken as in Fig. 1, and on an enlarged scale, of a portion of the fabric feeding and stitch forming mechanism; Fig. 3 is a front elevation looking to the right on Fig. 2; Fig. 4 is i an elevation taken from the side opposite to that shown in Fig. 1, on the same scale as Fig. 2 of the upper portion of the mechanism; Fig. 5 is a top view, on an enlarged scale as compared with Fig. 1, of the thread carrying and bead feeding machanism; Fig (3 is a similar view, on the same scaleas Fig. 4, of the bead feeding mechanism, the bead trough being broken away; Fig. 7 is a side elevation, looking up on Fig. 6; Fig. 8 is a cross sect-ional view, taken on the line 88 of 2 looking to the left; Fig. 9 is a side elevation on much enlarged scale, 01" the loop er, bead separator and attachments shown in Figs. 1, 2 and 3; Fig. 10 is a cross sectional view of the same, taken on the line 101O of Fig. 9, looking up; Fig. 11 is a Serial No. 445,943.

view similar to Fig. 10, but showing the looper and bead follower in their initial positions, for beginning a stitch; and Fig. 12 is a detail showing the relative positions of the looper and bead follower, taken looking upon Fig. 9.

Similar letters of? reference designate cor responding parts in all the figures.

The base plate 1 of the machine is provided with the usual bracket 2 and arm 3 to carry the mechanism located above the base plate; while the needle and nipple operating mechanism and the lower elements of the feed directing control are carried in suitable bracket-s as 4, 5, 6, attached below the base plate.

The driving shaft 7, through beveled gears 8, 9, shaft 10, beveled gears 11, 12, shaft 13, eccentric pin 14 and sliding bracket 15, reciprocates the needle carrier 16 in the usual manner; and, also, through the eccentric 1?, bell crank 18, engaging with the sliding bracket 19, reciprocates the needle nipple 20, in the way well known to those skilled in the art.

Also, the shaft 7, through the wrist pin 30, on eccentric 31, traveling in the slot 32, in the slide 35, moving in guides 36, 37 in the head plate 33 of the machine, raises and lowers the slide 35, which is provided with a forked bracket arm 38, carrying a nut 39, meshing with the worm 40 on the tube 41, which. is provided with shoulders 42, 43 to prevent its slipping up or down in the channel through the parts of the composite, rotatable spindle, which adjusts the position of the stitch forming element above the fabric relative to the direction of the fabric feed. as will be explained.

A hollow spindle 44 extends down through brackets 45, 46 on the head plate 33, and its lower end is provided with a collar 47, a tube 48, extends down through another bearing 49 on the head plate, which is provided with a sleeve 50. At its upper end the tube. 48 is provided with a flange 51. And two rods 52, are firmly inserted in the collar 47 and the tube 48 so as to connect them as an unitary structure.

These rods 52, 53 extend through holes in around the bead separator 58,

be revolved within the composite. spindle.

To the lower end of the tube 48 is secured a collar 54, carrying an arm .58, terminating in a cleft resistance foot 56 normally positioned just above the plane of the fabric. The collar 5. also carries a shank 57 at the lower end of which is the bead separator 58, which has a portion 69 depressed, about the length of a bead, below its general surface level and leading under a spiral shoulder extending down toward the conical point.

To the shank 57 is secured a cam rod 59 the function of which will be explained later. At the lower end of the tube 4-1 is secured a collar 60, which carries the looper 61, the lower end of which is provided with a guide box 62, lying so near 'to the. bead separator that when the looper travels there shall not be normally sufficient space for a head to pass down between the flat upper edge of the separatorand the back of the box 62, (see Fig. 16).

The back stop or lateral guard 63 of the looper is carried by a spring 64 and is extended down so that it is outside of the head, which rests on the depressed surface of the separator; and it prevents the head from falling out over the edge of the depressed part of the separator. But in case ahead should become jammed between the looper and separator the back stop will yield out ward,. so to avo'id'serious damage.

A. bead follower orguard 66, is carried by a spring shank 67, secured to the collar 60, and is provided with a back stop 68 which limits ll1 normal backward action of the spring shank. The follower 66 extends down near to the depressed upper surface 69 of the separator, so that it lies behind a bead which rests upon that surface. The

curve of the rod 59 is such that when the looper and follower are in their initial stitch position, as in Fig. 16, the follower will be pressed in close to the shoulder of the raised, flat top of the bead separator,

and, as the looper and follower move around the separator, the follower will pursue the irregular curve of the flat upper edge of the separator, at a slight distance therefrom, and will push before it, and under the spiral shoulder 71, the bead which may be in front of the follower. improved looper prevents more than one bead frompassing the separator for each stitch movement of the looper, and also prevents the bead from falling out over the side of the separator. if, for instance, the thread should be unduly slack; and the bead follower keeps the bead from lagging back Thus, it will be seen, the.

of the looper and getting out of position, and pushes the bead forward under the steep portion of the separators shoulder, where it will certainly travel down to the fabric'in proper relation to the stitch which is being formed. The limits of travel of the looper are marked by 87, and 88, 10.

To the lower end of the fcedcrbar, which may be raised, lowered and swung backward and forward in the usual way, is secured a feeder foot, preferably of an annular form, and provided with a shoe 120, having a yieldable or elastic port-ion, for instance the multiplicity of flexible elements 122, 122, adapted to straddle the beads, and to yield slightly laterally, and to bear with an elastic pressure against the. fabric so as to accomplish the feeding operation without injuring the beads or fabric.

In order that the beads shall be properly fed to and past the bead separator, it is necessary that they shall be supplied to the separator without interruption and at a uniform rate, neither too many nor too few beinglet down through the tube 41 to the separator.

The thread upon which the heads have been strung loosely, so that the beads may be separated at considerable intervals on the thread, to allow the'necessary thread to form the stitches, is wound around a drum 150, carried upon bracket arms 151 above the machine, and is lead from there down through a trough-like guide 152-, provided with transverse ribs 153, 154, against which the thread from the drum 150 will normally be held down by the weight of the beads upon it, so that the beads will be arrested temporarily by and held above the flanges, while the thread may move downward through the beads.

It is often desirable to wind several threads, with different colors or styles of beads on them, on different sections of the drum 150, so that they may be used selec tively by the operator; and the conformation of the trough 152 is such that a thread may be lead, from any point on the circumference of the drum, directly to the narrow end of the trough, and on to the bead separating sprocket, without interference fro a the sides of the trough. The vibration incident to the operation. of themachine will cause the beads from time to time to slip past the flanges and to travel down to the bead feeders, and if they should not do so, a slight jarring of the trough or thread by the operator willproduce the desired movement. Beyond the lower, narrowed end 155 of the trough 152 is a sprocket wheel 156, the arms 157 of which are spaced to accommodate a bead between every two of them, and may be rovided with a cross groove 158 to receive t 1e thread between the beads. And immediately below the end of the trough is arranged a pair of vertically reciprocating bead feeders which are operated as follows The feeder 161 is carried by a rocking bar 163, pivoted at 164 upon a bracket 165 on the arm 3 of the machine, and is connected by a rod 166 to the arm 167 of a bell crank, the other arm 168 of which travels against the cam 31 and is held to duty by a spring 86 extending from it to the arm 85 of a bell crank 83, 85. Consequently, with each revolution of the shaft 7, the bead feeder 161 will be raised and lowered once.

The bead feeder 162 is carried by a rocking arm 170, pivoted at 171 to the bracket 165, and connected by a rod 172 with the arm 83 of the bell crank 83, 85, the free arm of which also travels against the cam wheel 31. And through this means the bead feeder 162 is also raised and lowered, once for each revolution of the shaft 7, but alternately with the feeder 161.

The beads, normally follow the thread, down to the feeder blade 161, and when it is lowered they slide forward against the feeder blade 162. When the blade 161 rises, it passes normally between the bead which is resting against the blade 162 and the bead next above it,holding back the latter and permitting the former to pass on to the sprocket wheel when the blade 162 is lowcred. And if a blade in rising should hit below a bead, instead of passing it, the bead and thread will simply be lifted by the blade, to be lowered again when the reverse movement takes place; and the proper feeding of the beads will then continue without injury to the beads or thread or to the machine.

To the free end of the rocking bar 163 is attached a pawl 175, pressed to duty by a spring, as 176, or other suitable means, and adapted to engage with a ratchet wheel 177 on the hub 178 of the sprocket wheel 156, which is carried upon a shaft 179 in the end of a rocking bar 183. On the end of the shaft 179 is placed a. screw cap 180, which is omitted for clearness in Fig. 7. And between the cap 180 and the hub of the sprocket wheel 156 is interposed a coil ed spring 181, by the compression of which the sprocket wheel may be braked.

One end of the rocking bar 183, pivotally mounted on the bracket 165, is normally held down, by a spring 185, against the upper end of a rod 195 which rests above one arm 194 of a bell crank, the other arm 192 of which carries a roller 193 traveling against a cam 190 on shaft 7. The eccentric portion of the cam is short and so formed as to give a quick movement to the arm 192 when the cam is rotated. The roller is kept to duty by a spring 198.

In the operation of the machine, the beads positively actuated ratchet-fed sprocket feed-Wheel at the same rate, and so will slide down along the thread, through the hollow spindle, to join the beads passing through the looper to the bead separator,.

thus keeping up a uniform succession of beads to the latter point, and preventing their accumulating between the bead feeders and the ratchet Wheel.

The lowest bead is carried down along the bead separator groove, when the looper swings around the separator to cast the loop around the needle, being kept from falling out, over the side of the separator, by the back stop of the looper, and being pushed forward, and prevented from lagging be hind and distorting the thread or stitch loop, by the bead follower which follows closely behind the looper. At the same time the other beads on the thread passing through the looper will be held up by the upper, flat surface of the bead separator, the edge of which will cut in between the lowermost bead and the one next above it, as the looper moves around the separator.

While the needle is raised through the nipple and fabric, the nipple will remain raised, so as to press the fabric up against the foot of the arm 55 thereby holding the loop of thread, through which the needle rises to make the next stitch, firmly in place between the nipple and fabric, so that, when the needle descends it will draw the new loop through the old loop without danger of the barb of the needle catching the old loop the second time.

Just as the needle is about to descend to carry down the new loop the thread will be given a quick upward jerk by the arm 183, suuggina" up the thread around the shank of the needle so as to insure its catching under the barb of the needle.

It will be understood by those skilled in the art, that details of construction may be modified by the use of mechanical. equivalents or the like Without departing from the spirit of my invention as claimed.

Having thus described my invention, what I claim and desire. to secure by Letters Patent of the United States, is

1. The combination, in a bead sewing machine embodying a reciprocating needle, and a bead-separator. of a cooperating, rotatable looper, and a lateral bead guard associated with the looper.

2. The combination, in a bead sewing machine embodying a reciprocating needle, and a bead-separator, of a cooperating looper, and a. lateral bead-guard carried below the looper.

3. he combination, in a bead sewing machine embodying a reciprocating needle, and a bead-separator, of a cooperating looper, and a bead follower associated with the looger.

4.. The combination, in a bead sewin machine embodying a reciprocating needle, a bead-separator, and a cooperating loopcr, of a lateral bead-guardbelow the looper, and a cooperating bead follower.

5. The combination, in a bead sewing machine embodying a reciprocating needle, a bead-separator, and a cooperating looper, of a bead follower associated with the looper, and an elastic means supporting the foll-ower.

6. The combination, in a bead sewing machine embodying a reciprocating needle, a bead-separator, and a cooperating looper, of lateral bead-guard andelastic supporting means therefor.

7. The combination, in a bead sewing machine embodying reciprocatingneedle, a beadseparator, and a cooperating looper, of side and back bead-guards associated with the loo-per. I

n The combination, in a bead sewing ma chine, ei'nbodying stitch forming mechanism, of a reel, a fixed guide provided with fixed bead-arresters, and movable bead feeding means. V 9; The combination, in a bead sewing machine, em'bodyin stitch forming mechanism, of a reel, a guide consisting of a uniformly tapered trough provided with fixed, transverse, bead arresters, and movable bead feeding means. p

10. The combination, in a bead sewing machine, embodying stitch forming mecha nism, of a thread reel for holding the strung beads, and means embodying alternately operable, vertically reciprocable elements, dis posed horizontally below and transversely of the thread, for feeding the beads one by one along the thread toward the stitch forming mechanism.

, 11. The combination, in a bead sewing machine en'ibodying stitch forming mechanism, and bead separating mechanism associated therewith, of means for drawing forward a thread with beads loosely strung thereon, rotatable, driven means for feeding one bead forward toward the bead separating'mechanism for each stitch, and driving means for actuating said rotatable means.

12. The combination, in a bead sewing,

machine, embodying stitch forming mechanism and thread and bead supplying mechanism, of a head feeder consisting ofa sprocket wheel having grooved arms, a pawl and ratchet, and means for actuating the same to cause such sprocket wheel to feed forward one bead for each stitch.

The c nnbinatio-n, in a bead sewing machine, embodying stitch forming mechanism, of strung-bead supplying mechanism, vertically reciprocating means for feeding the beads one by one along the thread, and positively actuatedrotating means for passing one head toward the stitch forming mechanism for each stitch and means for actuating said rotating means step by step. .l l. The combination, in a single thread head sewing machine, of stitch forming .n'ieans, positively actuated bead feeding and forwarding means, loop tightening means, loop holding means, and elastic feeding means. p

15. The combinatiomin a singlethread bead sewing machine, of stitch forming means, positively actuated bead feeding and forwarding means, bead separatingmeans, loop tightening means, loop holding means, and elastic feeding means. a

16. The combination, in a single thread bead sewing machine, of stitch forming means, positively actuated bead .t'eeding and forwarding means, bead separating means, loop tightening-means, loop holding means, elastic feeding means, and bead following and guarding means.

JOSEPH A. GRGEBLI.

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