US1548837A - Separator for bead-sewing machines - Google Patents

Description

Augll, 1925.

' J. A. GROEBLI SEPARATOR FOR BEAD SEWING MACHINES Filed July 15, 1923 l Patented Aug. 11, 1925.

N i r EHQE.

JOSEPH A. GROEBLI, OF NEW YORK, N. Y.

SEPARATOR FOB BEAD-SEWING MACHINES.

Application filed July 16, 1923.

have invented certain new and useful 1111- provements in Separators for Bead-Sewing Machines, of which the following is a specification.

My invention relates to an improvement in the bead separating mechanism for bead sewing machines, by means of which beads loosely strung upon a thread are fed along it and attached to afabric, either by the same thread or by a second thread; and my improvements are directed particularly to the means whereby the beads are finally released one by one and allowed to slide down along the thread to the fabric to which they-are to be attached. A machine of this general type is shown in my Letters Patent No. 1,445,764, dated February 20th, 1923; and the application of my present improvements will be readily understood if reference is made to my aforesaid patent for an illustration of the operative mechanism not shown in the drawings of this application.

In the drawings, Fig. 1 is an elevation of my improved bead separator associated with a looper and needle; Fig. 2 is a vertical sectional view of the same; Fig. 3 is a similar vertical section showing the separator in another position; Fig. 4 is a view of the separator looking to the left on Fig. 1, the

looper arm being omitted for clearness; Fig.

5 is a bottom view of the separator, with the looper arm removed,'taken as looking up on Fig. 1.

Similar reference numerals designate similar parts in all the drawings.

A head separator is carried by a tube 53 which corresponds to the tube 53 of my aforesaid Patent No. 1,445,764, and may be mounted and rotated by similar mechanism. The looper arm 48 is carried by a collar or head 46 attached to a tube 38, which corresponds to the tube 38 in my aforesaid patent and may be mounted and rotated by similar means. The needle 7 5 and the feeder foot 106 corresponds to the parts similarly numbered in my said patent.

In separators of the class shown in my Patent No. 1,445,764, the beads are dropped one by one by the edge of a rotating member cutting in between the lowermost bead and those above it, so as to leave the lowermost Serial No. 651,769.

bead unsupported and free to drop while the ones above it are held up. The accurate operation of mechanism of this type is dependent on a considerable degree of uniformity in the size and shape of the beads, so that the lowermost bead shall be of such a length as to pass below the separating edge, but shall not be short enough to allow the succeeding head to lie so far down in the path of the separating edge that it will be crushed or broken by it instead of riding up above it. For'it is obvious that if a head is caught inthis way, it is likely to be broken or at leastwill interfere with the normal operation of the machine and dis arrange the embroidery. But with my improved device the beads are gripped between cooperative parts of the mechanism, and held, and dropped one by one by the opening and closing of the cooperating parts; and thereby variations in the size of the beads are allowed for, and a very accurate and dependable separating action is obtained.

Toward the lower end of the tube 53 the bore of the tube is contracted and deflected to one side so as to open through the side of the tube as at 2, the body of the tube being thickened as at 3, to facilitate this conformation. The arms of a yoke like member 4 are pivoted, as by pivot screws 5, 5, to the tube 53, the yoke being provided with an upwardly projecting arm 6, passing through a slot 7 in a guide plate 8 carried bythe tube 53; the yoke 4 also being provided with a downwardly depending arm 9, secured thereto by suitable means, such as screws 10, 10, so that it will rock back and forth with the movements of the yoke 4 on its pivots.

The lower end 11 of the arm 9 lies transversely below the end of the tube 53; and is so proportioned that it may be rocked to one side under the end of the tube, so as to lie beneath the bead duct and at approximately the distance of one bead length beneath it, but may be rocked in the opposite direction so as to clear the bead duct, and allow the bead to drop, it being so formed, for instance with a recess 12, as to clear the needle when it is so rocked. By providing.

date its position to beads of difierent lengths.

A spring 15 interposed between a support 16, attached to the lower end of the tube 53, and the yoke 4; presses the bow of the yoke 4t and its arm 6 upward yieldably.

To the looper tube 38 is secured a cam race which rotates with the looper tube. The arm 6 travels against this cam race, and the yoke at will be rocked to and fro'by the cam race 20 once with each revolution of the looper tube 38.

A jaw member is pivoted, as at 26, in a bearing 27 carried by the lower end of the tube 53; and it is provided with an arm 28 which registers in the lower part of the bead duct 2, being normally kept to duty by a spring 30, the ends of which are held in the support 16, while the loop of the spring lies behind the jaw 25. The inner face of the arm 28 is disposed at an acute angle to the opposed face of the bead duct 2, so that the arm 25 will engage the lowermost bead laterally, but, preferably, will not bear against the beads higher up.

The jaw 25 is provided with a laterally disposed arm 31, which is engageable by an arm secured to the yoke t in some suitable manner, as by the screws 5 and 36, so as to swing back and forth with the yoke a, Normally the arm 31 lies free from the arm 35 and is not engaged thereby until during the latter part of the movement toward it of the arm 35.

The operation of the mechanism is as follows. In the position shown in Figs. 1 and 2, a bead has been dropped and the remaining beads in the bead duct are being held up by the arm 28 of the aw 25, which is pressed against the lowermost bead by the spring 30. As the looper tube 38, carrying the cam collar 20, turns in the direction of the arrow in Fig. 1, the cam race will be carried along over the end of the arm 6, rocking down the yoke 4 against the resistance of the spring 15 and throwing its arm 11 back under the bead duct. When the arm 11 has passed so far back that a bead cannot drop past it, the

arm"35 encounters the arm 31 and rocks back the pivoted jaw 25, so as to withdraw its ar1n28 from contact with the lowermost bead, thus allowing the column of beads to slide down one bead length until-the lowermost rests on the arm 11. The mechanism will then be in the position shown in Fig. 3, the arm 7 travelling against the flat, projected surface of the cam collar 20; and they will remain in this position while the formation of the stitch is proceeding, which, in the illustrations, is shown as being accomplished by the casting of the looping thread around the bead thread 41. But when the slope of the cam race reaches the arm 6, that arm will rise and allow the arm 11 to be withdrawn from below the lowermost bead, the retrograde movement of the arm 35 permitting the jaw 25 to close its arm 28 against the next to the lowest head, so as to grip it laterally and hold it and those above it up, before the column of beads is deprived of the support of the arm 11, the withdrawal of which being then continued allows the lowermost bead to drop down along the thread to the fabric as the parts regain their initial positions, as shown in Figs. 1 and 2. The next stitch cycle then proceeds, the beads being dropped one by one as the stitches are formed.

I have illustrated my improvements as embodied in a two thread machine. But it will be readily understood by those skilled in the art that the invention is applicable to single thread machines as well as to double thread machines. For my improvements are directed particularly to the means for dropping the beads one by one to slide down along the bead thread and be attached t the fabric by some well known form of stitch.

It will also be understood that the mechanism shown is to be considered as an illustrative and not as an exclusive type. For details of construction may be varied by the use of mechanical equivalents or the like without departing from the spirit of my invention as described and claimed.

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

1. In a bead sewing machine, the combination, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, before their release for attaclnnent to a fabric, embodying bead supporting means, and bead gripping means.

2. In a bead sewing machine, the combination, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, be fore their release for attachment to a fabric, embodying intermittently functioning bead supporting means, and bead gripping means.

8. In a bead sewing machine, the combination, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, before their release for attachment to a fabric, embodying bead supporting means, and laterally functioning bead gripping means.

4. In a bead sewing machine, the co1nbination, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, before their release for attachment to a fabric, embodying bead supporting means, and alternately operating bead gripping means.

5. In a bead sewing machine, the combinaion, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, be-

for-e their release for attachment to a fabric, embodying intermittently functioning bead supporting means, and laterally functioning and alternately operating bead gripping means.

6. In a bead sewing machine. the combination, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, before their release for attachment to a fabric, embodying reciprocating bead vsupporting means, and bead gripping means.

7. In a bead sewing machine, the combination, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, be fore their release for attachment to a fabric, embodying bead supporting means, and reciprocating bead gripping means.

8. In a bead sewing machine, the combination, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, be fore their release for attachment to a fabric, embodying reciprocating bead supporting means, and alternately reciprocating bead gripping means.

9. In a bead sewing machine, the combin-ation, with means for supplying a thread carrying loosely strung beads, of mechanism for separating the beads on the thread, before their release for attachment to a fabric, embodying a Vibratable member constituting bead supporting means, and head gripping means including a pivoted jaw.

10. In a bead sewing machine, the com bination, with means for supplying a thread carrying loosely strung beads, of a bead support and a bead gripper, means for reciprocating the bead support, and means for reciprocating the bead gripper coincidently with the support during part of the move ment of the latter.

11. In a bead sewing machine, the combination, with means for supplying a thread carrying loosely strung beads, of a bead support and a bead grip aer, means for reciprocating the bead support, and means for reciprocating the bead gripper coincidently with the support during the movement of the latter near one end of its swing.

12. In a bead sewing machine, the combination, with means for supplying a thread carrying loosely strung beads, of means for grasping a bead, and means for releasing a preceding bead.

18. In a bead sewing machine, the combination, with means for supplying a thread carrying loosely .strung beads, of means for supplying a plurality of beads, means for grasping a bead, and cam actuated means for releasing a preceding bead.

14. In a two thread bead sewing machine, the combination with means for supplying a thread carrying loosely strung beads, rotary means for supplying a stitching thread, needle operating means, alternately operating bead supporting and bead gripping means, and actuating means therefor driven by said rotary means.

JOSEPH A. GROEBLI.

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