US399179A - bennett - Google Patents

Description

3 Sheets-Sl1eet 1.

W fim/WZZ (No Model.)

W, E. BENNETT.

LOOP REMOVING. AND SPREADING MECHANISM FOR BUTTON SEWING MACHINES.

N PEYERS. Fram-Lhhugnpher. Wilmington, n 0.

3 Sheetsi3heet 2.

(No Model.)

' W. E. BENNETT.

LOOP REMOVING AND SPREADING MECHANISM FOR BUTTON SEWING MACHINES.

Patented Mar. 5

3 SheetsSheet 3,

(No Model.)

W. E. BENNETT.

LOOP REMOVING AND SPREADING MECHANISM FOR BUTTON SEWING MACHINES.

UNITED STATES PATENT EEicE.

\VALTER E. BENNETT, OF BOSTON, MASSAUHUSETTE, ASSIGNOR TO THE MORLEY BUTTON SEVING MACHINE COMPANY, OF SAME PLACE.

L00? REMOVlNG AND SPREADING MECHANlSM FOR BUTTON-SEWlNG MACHlNES.

SPECIFICATION forming part of Letters latent No. 399,179, dated March 5, 1889. Application filed Tune 14, 1888. Serial No. 277,108. (No model.)

To all whom it may concern.-

Be it known that I, WALTER E. BENNETT, a citizen of the United States, residing at Boston, in the county of Suitolk and State of Massachusetts, have invented a new and 1111- proved Loop Removing and Spreading Mechanism for Shank- Button-Sewing Machines; and I do hereby declare the following to be a full, clear, and exact description of the construction and operation of the same, reference being made to the accompanying drawings, forming a part of this specification.

This in vent-ion relates to improvements upon the niachi no for sewing shank-buttons to boot and shoes, (for which Letters Patent were granted to Rosewell Thompson November 30, i 1886, No. 353,609,) the stitch formed by said machine at: the present time being that for i the method of making which Letters Patent were granted to me July 26, 1887, No. 367,584, my object bcin to remove the secondary loop of thread from the open eye of the needle after it has been drawn up through the fabric, then spread said loop of thread snfiiciently wide to pass it over a button-head with the assist ance of the take-up and tension mechanisms of the machine, the same being accomplished 1 by the use of a device I term a loop-taker, having a carrier and other operating inechair isms which regulate and control its position with relation to said noodle and loop of. thread, all of which will herein be fully explained and described. I Y

In the accompanying drawings, Figure l is a left side view of the machine referred to with body shown in section and with the sliding plate, loop-taker carrier, loop-taker, and theiroperating levers and cams in their proper positions, but with the presser-foot, fabricfeeding, and some of the stitch-forming mechanisms removed, which devices forin no part i of my present invention. Fig. 2 is an enlarged left side view of the front end of the l fahric-snpporting table with ihread-controller and end of take-up bar in the same. Above l the fabric is the front end of the arm of the machine, the needle-bar bearing-support, oscillating needle-bar bearing, needlebar, sliding plate, loop-taker carrier, loop-taker, and ends of the operating-levers of the latter-! named devices, thepoint of said loop-takeris shown entering the drawn-up loop of thread. Fig. 3 is a front view of the same parts of mai chine and devices referred to in above-named figure. Fig. :4 is also an enlarged side View of thethread-controlling device under the fabric, and above the same is the loop-taker carrier, loop-taker, ends of their operatinglevcrs, and lower portion of sliding plate; but with the cover-plate of loop-taker removed from the carrier, so to clearly show the form and position of the said loop-taker. In this figure the sliding plate, loop-taker carrier, and loop-taker are raised so as to cause the upper snrface ot' the point of the latter to be about the same height as the center ot the open eye of the noodle, so that when the strain is exerted upon thcloop of thread by the takeup and tension devices said loop may be removed from the eye of said needle in consequence of the sloping form and angular position of said loop-taker, the sliding motion of said loop being represented by broken lines in this figure. Fig. 5 is a view of the lower end of the needleand a longilndinalsection of the loop-'i'aker through its center and raised to its highest position, as in the preceding figure. This sectional View clearly shows the slot in which the needle enters and the opening for the button-head at the bottom. Fig. 6 is a top view of the loop-taker, showing its point entering a loop of thread and the point of the needle in the narron slot in the looptaker. Fig. 7 is also an enlarged view of the same devices represented in Fig. r, but with sliding plate, loop-taker carrier, and loop taker in a lower position and loop of thread passing down the body of the loop-taker. Fig. is also a representation of said devices, but with the sliding plate, loop-taker carrier, and.

loop-taker in their lowest position, and with the loop of thread passing under the looptaker and a button-head. Fig. 9 represents the parts in same position, but with the loop of thread passed under the button-head and drawn snugly around the shank of the button, after which the fabric moved back by the feeding mechanism, and the loop-taker carrier and loop-taker are raised to about the position shown in Fig. 10, in which posit-i011 they remain during the formation of the stitch until the secondary loop of thread is drawn up to its highest position by the needle. Then the loop-taker is again lowered, so that the point of the same may enter the loop of thread, as previously shown and described.

Fig. 11 is' an enlarged bottom view of the loop-taker carrier and loop'taker. Fig. 12 is an enlarged cross-section of the same on line 00 m, Fig. 10. Fig. 13 is an enlarged cross-section of the loop-taker carrier and its coverplate on line w as 00 0c, Fig. 10.

Similar letters of reference indicate correresponding parts.

A is the body.

B is the fabric-supporting table, and C is the arm of the machine.

D is the needle-bar-bearing support.

E is the oscillating needlerbar bearing.

F is the needle-bar.

G is the needle-bar carrier.

H is the needle-bar pitman.

I is the needle-bar lever.

J is the take-up bar.

K is the take-up-bar lever.

I. is the take-up bar and lev r-c(mnection.

M is the thread-controller.

N is the thread-controller rod.

0 is the thread-roll, and P is the tension mechanism.

a is the sliding plate fitted to move upon the front face of the needle-bar-bearing sup port, and having an extension a, at its lower end and bent at a right angle, a, over the lower needle-bar bearing.

' b is the loop-taker carrier, and is pivoted to the lower side of the an gle-plate a".

b is the eovenplate of the loop-taker.

c is the loop-taker.

(l is the loop-taker carrier-1m]:

e is the loop-taker carrier-lever.

fis the loop-taker carrier-cam.

g is the sliding-plate lever, and 7'; is the sliding-plate cant.

The practical operation of my improved loop removing and spreading mechanism is asfollows: The loop-taker carrier and looptaker are retained in the position shown in 10 during the formation of the primary loop of thread and all other parts of the stitch until the needle has drawn the secondary loop of thread up through the fabric and to its highest position above the same, as shown in 2. Then the carrier and loop-taker are lowered by their operating mechanism to the position shown in this figure, the point of said loop-taker having entered the loop of thread during said lowering movement, as shown in this and Fig. 6. Then said mechanism raises the carrier and looptaker to the position shown in Figs. 4 and 5, so that the top face of the point of the looptaker may be at about the center of the open eye of the needle, the narrow slot in the loop taker making an opening for the point of the needle to enter, as shown in Figs. 5 and 6. lVhile the loop-taker is in this position the take-up and tension mechanisms exert sufficient strain upon the thread to cause said secondary loop to slide out of and away from the open eye of the needle and down the smooth, round, and inclined face of the loop-taker, as shown in Figs. 4 and 7. There 2 portions to allow the free passage of the loop of thread between them while still retaining the loop-taker in its carrier. The curved portion of the carrier and the cover-plate is shown in the enlarged drawings, Figs. 11, 12, and 13. While the loop of thread is thus sliding down the face of the loop-taker, the latter and its carrier are lowered by their operating mechanism, as shown in Fig. 7, until they are in the position shown in Figs. 1, 2, 3, 8, and 9, the large opening in the lower end of the loop-taker allowing the same to pass over the button, so that as the strain upon the loop of thread continues to be exerted by the take-up and tension mechanisms said loop may pass under the end of the loop-taker below the horizontal center of the button-head, as shown in Fig. 8, then under the button-head, and be snugly drawn around the shank of the button, as shown in Fig. 9, thus completing the stitch. After the completion of the stitch the carrier and looptaker are raised to about the position shown in Fig. 10, and the fabric is moved back by the feeding mechanism sufficiently far to sew another button in its proper position upon the same, and after the formation of the primary loop of thread and other parts of the stitch the operations of drawing up the secondary loop of thread, removing it from the open eye of the needle, and spreading and passing it over the button-head are repeated, as above described.

1 am aware that prior to my invention various devices have been employed in buttonsewing machines to pass a loop of thread over a shank-button head; but

' Iclaim as my invention and desire to secure by Letters Patent- In a shank-button -sewing machine, the combination, with the work-table, open-eyed doublebarb needle, stitch-forming tension,

and take-up devices and their operating mechanisms, of the loop-taker c and its swinging, rising, and falling carrier 19 and operating mechanisms, said loop-taker having the point ITO at the top to receive a loop of thread from the eye of the needle, a slot to receive the point of the needle, and an opening at the bottom to receive a button-head and fitted loosely in its carrier, the latter being partially curved around its back and bottom to retain it in its proper working position, and operating substantially as described, for the object set forth.

WVALTER E. BENNETT. WVitnesses:

RosEWELL THOMPSON, J ESS E MOR EY.

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