US448397A - williams - Google Patents

Description

2 Sheets-Sheet 1.

(No Model.)

H. J. WILLIAMS.

BUTTON HOLE SEWING MAGHINE.

No. 448,397. Patented Mar. 1'7, 1891.

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. (No Model.) 2 Sheets-Sheet 2.

H. J. WILLIAMS. BUTTON HOLE SEWING MACHINE.

No. 448,397. Patented Mar. 17, 1891.

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llnrin STATES HENRY J. lVILLlAMS, OF NEl/V YORK, N.

Y., ASSIGNOR TO HENRY J. DAVIDSON,

' OF SAME PLACE.

BUTTON-HOLE SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 448,397, dated March 17, 1891..

Application filed April 25, 1890.

To all whom it may concern.-

Be it known that I, HENRY J. WILLIAMS, of the city, county, and State of New York, have invented certain new and useful Improve- 5 ments in Button-Hole Attachments for Sewing-Machines, of which the followingis a specification, reference being had therein to the accompanying drawings.

The objects of my invention are, first, to

IO operate the longitudinal feeding mechanism of a button-hole attachment by means of a ratchet and pawl, as hereinafter described and set forth; second, providing means for operating said button-hole attachment from 15 beneath the bed-plate of a sewing-machine.

I have applied my longitudinal feeding and operating mechanism to the button-hole attachment for sewing-machines patented to me the 18th day of February, 1890, No. 421,463.

To this end my invention consists in certain parts and combination of parts hereinafter fully set forth. Figure 1 represents top or plan view of my button-hole attachment. Fig. 2 represents a plan view of the mechanism for driving the button-hole attachment with the plate of the sewing-machine removed. Fig. 3 represents a cross-section through the bed-plate of the sewing-machine, the attachment, and the mechanism for operating the button-hole attachment. Fig. 4 represents a detached view of the elbow drivinglever. Fig. 5 represents an enlarged view of the cloth-feeding plate and the pawl for operating the same. Fig. 6

represents a cross-section of the bed-plate of a sewing-machine, showing the levers for operating the attachment.

Similar letters referto similar parts throughout the several views.

A is the button-hole attachment.

B is the bed-plate of the sewing-machine.

O is the slotted pawl for operating the clothfeed plate E of the button-hole attachment.

This pawl O is slotted at a for the reception of a screw which secures the slotted pawl nlovably to the bed-plate D of the buttonhole attachment. A spring 6 presses against the forward end of the pawl O to keep it in contact with the ratchet-wheel E, which operates the cloth-feed plate E through the intervention of a continuous rack F and pinion Serial No. 349,481. (No model.)

f, as shown in Figs. 1 and 5 of the drawings. The slotted pawl-lever C is also provided with a handle g, so that it can be manipulated in case the thread breaks in sewing the buttonhole, as hereinafter more fully described. The ratchet-wheel E derives its motion from the transmitting-bar G, which has a pawl h secured to its under side that engages with the ratchet-wheel E. v

i i are standards for the purpose of guiding the transmitting-bar in its reciprocating movement. Upon this transmitting-bar is a lug or projection H, and it is slotted atj for adjustment and for the reception of a stud is, which extends down through the bed-plate of the attachment andalso the bed-plate of the sewing-machine into the slot m of the drivinglever I, the bed-plate of the attachment being slotted longitudinally, which allows the stud It to play in the slotted driving-lever I, and it is secured to the under side of the sewingmachine by a shouldei bolt J, which allows the lever to oscillate on it. This slotted driving-lever I is elbow-shaped and is provided with two slots. Slot m at its forward end is for the reception of stud 7c, and is slotted longitudinally with the lever, so as to allow the stud 76 to play in said slot as the lever oscillates. At the rear end of lever I is another slot 72 for the reception of a drivingarm K. This slot is made larger than the end of the lever K for the purpose of allowing the driving-arm K to move a certain distance while the needle of the sewing-machine is leaving the goods. After the needle has left the goods and is at its highest point then the driving-arm K comes in contact with the end of the slot 01 and moves lever I forward while the needle is at its highest point. Driving-arm K is secured to the feed-shaftL by a set-screw 0, and it has a reciprocating movement as the sewing-machine is worked. The pawl-lever O is also for the purposeof manipulating the ratchet-wheel E around, which will place the cloth-plate of the attachment in any part of the button-hole in case the thread should break; or if the cloth-plate should be carried too far around before the machine could be stopped when working the button-hole, then the operator could place it back to its right position by simply moving tact with the ratchet-wheel.

Having now fully described my invention and the manner in which I have embodied it, what I claim as new, and desire to secure by Letters Patent, is-

1. In a button-hole attachment for sewing machines, the combination, substantially as hereinbefore set forth, with the. cloth-feed plate, of the ratchet-wheel E, connected to said feed-plate, and means for driving the same, the slotted pawl, and means for securing the slotted pawl movably on its'support,

said pawl having a movement independent of the driving mechanism fonoperating the cloth-feed plate, for the purpose'specified.

2. In a button-hole attachment for sewing machines, the combination, substantially as hereinbefore set forth, with the cloth-feed plate, of the ratchet-wheel E, connected tosaid feed-plate, and means for driving the same, the slotted pawl movably connected to a support, the screw for controlling the slotted pawl in its oscilla ing movement, the stop- 7 pin, and a spring for retaining said pawl in contact with the ratchet-wheel;

3. In a button-hole attachment for sewingmachines, the combination, substantially as hereinbefore set forth, of the cloth-feed plate, the ratchet-wheel operativelyconnected with the feed-plate, the reciprocating transmittingbar G, the guides through which it moves, a pawl secured to the transmitting-bar and en- 1 gaging with the ratchet-wheel, the slotted driving-lever I, operatively connected with the transmitting-bar G to give it areciproeating motion, and means for operating the lever- I.

4:- In a button-hole attachment for sewingmachines, the combination, substantially as hereinbefore set forth, of the bed-plate of the machine, the cloth-feed plate, the ratchetwheel connected to the feed-plate, a reciprocating transmitting-bar, a pawl pivoted thereon and engaging with the ratchet-wheel, the driving-lever pivoted to the under side of the bed-plate of the machine, connections between the driving-lever and the reciprocating transmitting-bar, and means for operating said lever.

5. In a button-hole attachment for sewingmachines, the combination, substantially as 'hereinbefore set forth, of the cloth-feed plate, the adjustable transmitting-bar, means for connecting them, the slotted driving-lever I, slotted at itsforward and rear ends for the purpose specified, the stud 7;, extending vertically into and playing looselyin slot m and secured adjustably to the transmitting-bar, and means for operating the same.

6. In a button-hole attachment for sewingmachines, the combination, substantially as hereinbet'ore set forth, of the cloth-feed plate, the adjustable transmitting-bar, means for connecting them, the stud extending vertically from the transmitting-bar, the slotted driving-lever I, the shoulder-bolt J for securing said lever to the bed-plate of the machine, and the reciprocating arm extending vertically through said slot at its rear end and playing loosely therein,and means for operating said arm.

H. J. WILLIAMS. Witnesses;

V. T. WILSON, J As, E. WARNER.

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