US382466A - freese - Google Patents

Description

(No Model.) -5 Shts-Shet 1; v L J. S. PREESE.

BUTTON HOLE SEWING MACHINE.

- Paten ted May 8', 1.888;,

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"5 Sheefs-Qheet 2.- J. s. PREE SE. BUTTON HOLE SEWING MAGHINE 7 No. 382,466. Patented May 8.1 8 88;

WITNESSES: 1 11vVE1vT0R,

r .VJOHN s. FREESE. BY

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N. Finns. Fholu-Lilhngrnpllur. Washillglull. D4 0.

(No Model.) 5 sheets-sham.

' J. S. FREESE. I

I v BUTTON HOLE SEWING MACHINE.

NO. 382,466. Patentd MayB, 1888,

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ATTORNEY.

N. PETERS. PholO-L'Iihngrupiur. Wlihinglm. DC

UN TED STATES,

PATENT OFFICE.

JOHN s. FEE-ESE, or BROOKLYN, new YORK.

BUTTON-HOLE SEWl-NG MACHINE.

SPECIFICATION forming part of Letters Patent No. 382,466, dated May 8,1888. application filed October so, 1886. Serial No. 211514. (it model.)

lyn, in the county of Kings and State of New York, have invented certain new and useful Improvements in a Button-Hole Sewing-Ma- 'chines, of which the following is a specification.

My invention relates to improvements in the take-up, the operating mechanism of the needle-bar carrier, and of the cloth-plate operating mechanism; also, to a means for introducing an overseamingthread into the buttonhole when desirable, and to abutton-hole cutting attachment, as hereinafter more fully set forth. I

In the accompanying drawings,Figure 1 represents a partial side view and partial longitudinal section of a sewing-machine combining my improvements. Fig. 1* isa vertical section of a detached portion thereof. Fig. 2 is a plan view thereof, partly in section. Fig. 3 is a plan view of the feed-Wheel and adjacent parts. Fig. 4 is an end View of the machinearm, partly in section. Fig. 5 is a plan view of the cloth-plate. Figs. 6 and 7 are detail perspective views of the machine-head and needle-bar carrier and means for reciprocating the same.

Similar letters of reference indicate similar parts.

The letter A designates the bed-plate of the machine, having the feed-wheel B arranged therein and operated by means of a dog, B, in the usual manner. 0 designates the needlebar arranged in a carrier, 0, and connected with the operating-shaft O to receive the proper vertically-reciprocating motion therefrom.

On the needle-bar-operating shaft 0 -near the rear end thereof, is mounted a revolving cam, D, the face of which is arranged to act on one end of the take-up lever D, pivotedin the rear portion of the arm, and the other end of which is provided with thread-guides D and which constitutes a take-up, the operation thereof being to draw back the thread that may be passed through the guide D at the proper intervals under the impulse of the cam D, and thereby tighten the loop formed in the thread at the sewing-point. A spring, D is connected to the take-"up lever D,to retain the To the needle-bar carrier 0 is connected, by

means of a screw, 0, (shown in Fig. 1,) and opening for screw, (shown in Fig. 6,) one end of a rod, E, which serves to impart thereto the required horizontal reciprocating motion,

the carrier being guided in guideways C of V shape, at the top and bottom of the head of the machine-arm, the carrier being provided with slides O" of corresponding shape to said ways. By the shape of said ways and slides any waste of either of the parts may be read ily compensated for by simply adjusting the slides in relation to the needle-bar carrier by. means of the screw 0.

To the rod E a swinging arm, E, is pivoted at or near its angular portion. The upper end of this swinging arm is forked and engages with a pin, E, which forms a fulcrum for the same. The lower end of said swinging arm extends horizontally a short distance from the upper portion, at a right angle therewith, and then extends downward, and is provided with aver tical slot, E. This vertically slotted, lower portion is connected with a vertically-slotted downward extension on one end of a horizontally-reciprocating extension-link,E*, the other end of which engages with a cam-wheel, E carried by a vertical shaft, E ,which is geared with the shaft which operates the needle-bar. The connection of the slotted portion of the swinging arm E and the slotted extension E is made by a screw-bolt, E", passingthrough said slots and provided with a nut. As the camwheel E revolves, alongitudinally-recipro- 5 eating motion is imparted to the rod E through the medium of the reciprocating link E and the-swinging arm E,havingits fulcrum'on the 3,) in the top of the feed-wheel B by means of a pin or stud, G,which passes through a slot, G, of the bed-plate A. Said slot G3 is partly straight and partly curved concentric with the feed-wheel, the straight portions being at the opposite ends of the curved portions thereofand in a plane intersecting the axis of the feed-wheel, as shown in Fig. 2.

In the operation of the machine the stud G of the cloth-plate traverses the slot G under the impulse of the cam groove G of the feedwheel, and owing to said shape of the slot the cloth-plate is caused to turn around when one side of the button-hole has'been sewed, then continue its motion in its reversed position until the button-hole has been completed, the portion of the eanrgroove G required to produce said motion of the cloth plate being about one-half of the entire length of the groove. The cloth-plate G is now to be returned to its first position, and to effect this purpose I provide the feed-wheel B with ratchet-teeth B on its periphery and arranged in engagement therewith a push-pawl,B ,connected to a lever, B to be operated by hand, said pawl having a suitable return-spring, so that the feed-wheel may be advanced by means of the pawl, for causing the return of the clothplate by the action of the other or remaining portion of the canrgroove G. A stop pin,B mounted on the end of a spring-impelled lever, B", and adapted to enter a socket of the feedwheel,serves to determine the correct position of the cloth-plate, said lever also being capabio of operation by hand. A friction-roller, (3*, mounted on the end ofan arm, GZengages with one end of a cloth-plate in its reverse motion, and thereby serves to steady the plate.

In thehead A of the machine-arm is arranged a vertical sliderod, H, (see Figs. 1 and 4,) the lower 'end of which is provided with a threadguide, H, for introducing an overseaming thread in the button-hole that is being sewed, the length and position of said rod being suitable to that purpose. On the slide-rod H is arranged a spring, H which acts thereon with a tendency to depress the same, and for the .purpose of determining the position of the rod it is arranged to be acted on by swinging cam H, the face of said cam engaging with aspur, H, on the rod, and the cam being of such shape that when it is adjusted to one position the rod is allowed to take a lower and operative position, while when it is adjusted to another position the rod is lifted a sufficient distance to clear the cloth-plate, permitting its thread-guide H to be used or left out of use, as may be desirable.

Above and below the bed-plate are levers I I, one carrying a block and the other carrying a cutter, 1 of suitable form to cuta buttonhole by theirjoint action in a well known manner, one of said levers being provided with a return-spring, 1 The operation of said out ter 1 is produced by means of an oscillating cam, J, which is mounted on a shaft, J, and constructed to engage the tail end of the upper lever, l, by means of a hook, J' and to engage the corresponding end of the lower lever, I, by means of its face, so that when said cam is swung in the proper direction it acts on both levers simultaneously to cause the tail ends of the levers torecede from each other, the effect of which is to cause the cutters to oppose each other. The motion of the cam-shaft J is pro duccd by means of a handle, J mounted thereon, a stop-pin, J, serving to regulate such motion; and in order to permit the action of the cutters I the feed-wheel B is provided with an opening, 1 (see Fig. 3,) for the passage of the cutters, said opening taking the proper position when the cloth-plate is returned to the starting-point.

The cutting-levers I I have their fulcra in posts I 1*, one of which is secured to the bedplate A, as by means of screws 1 (see Fig. 1*,) and is provided with ascrew-threaded socket, I, to receive a corresponding threaded shank, l, of the other post. By this means the bed A is relieved of all strain arising from the operation of the cutter-levers, while said levers, moreover, may be readily adjusted in relation to each other when necessary.

The lever B is for the purpose of arresting the feed-wheel B at certain desired points, the first point being to bring the wheel B to its normal starting-point, which, being on its starting-point to make the button-hole, the slot in the feed-wheelB is in position to allow the cutter to pass through the slotin the feedwheel to cut the cloth. To form dififerent sized button-holes said feed-wheel B is turned or ratched by hand instead of being worked by the machine, to bring it in proper position to the needle, and when the correct length of the button-hole is secured pins may be inserted to secure the machine in that position.

\Vhat I'claim as new, and desire to secure by Letters Patent, is

1. In a button-hole sewing-machine, a bedplate having the slot G partly straight and partly curved, as shown, a feed-wheel having the cam-groove G and peripheral ratchetteeth, a cloth-plate having a stud fitted in said slot of feed-plate to engage said groove of the feedwheel, a spring-pawl engaging said teeth of the feed-wheel, a lever carrying said pawl, and a stop-lever adapted to engage with the feed-wheel, substantially as and'for the purpose described. 7

2. In a button-hole sewing-machine, a cutting attachment composed of the levers I I, having return-springs and forming a cutting device, an operating-cam, J, constructed to engage both of said levers simultaneously by bearing against the tail end of the lower lever with its face and pulling the tail end of the upper lever by means of the hook J and a handle, J mounted on the cam-shaft, substantially as and for the purpose described.

3. In a button-hole sewing-machine, a cut ting attachment composed of levers I I, one carrying a cutter and the other a block and meeting from opposite sides, an operating- ICC IIO

cam, J, constructed to engage both of said le-- operating the same, of posts 1 I, forming the vers simultaneously by bearing against: the fulera forsaid levers, one secured to thebedtail end of the lower lever with its face and plate and provided with a screw-threaded pulling the tail end of the upper lever by socket and-the other having a screw-threaded 5 means of the hook J and ahandle, J mounted shank fitted into said socket, substantially as r 5 on the cam-shaft, in combination with a feedand for the purpose described.

wheel having an opening for the passage of JOHN S. FREESE. said cutters, substantially as herein described. Witnesses:

4. In a button-hole sewing-machine, the FRANCIS G. BOWEN,

r0 combination, with cutter-levers and means for J As. S. EWBANK.

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