US296555A - Sylvania - Google Patents

Description

' 2 Sheets-Sheet 1-. G. GOODWIN 85,9 W. WARREN.

(No Model.)

TUOK MARKER FOR SEWING MACHINES.

Patented Apr. 8, 1384.

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(110 Model.) R J. 0Q GOODW-IN 8: G. W. WARREN.

TUGK MARKER FOR SEWING MACHINES.

No.296.555. Patented Apr .8,1 884.

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JULIUS O. GOOD'WIN AND CHARLES WV.

"WARREN, OF PHILADELPHIA, PENN- SYLVANIA, ASSIGNORS TO THE AMERICAN BUTTONHOLE, OVERSEAM- ING AND SEWING MACHINE COMPANY, OF SAME PLACE.

-MARKER FOR SEWING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 296,555, dated April 8, 1884.

Application filed October 23, 1883. (No model.)

l'b all whom it may canoe/72,5

Be it known that we, JULIUs O. Goonwrn and GrmnLns W. WARREN, both of Philadelphia, in the State of Pennsylvania, have invented certain new and useful Improvements in Tuck-Markers for Sewing-Machines, of

which the following is a specification.

Our invention relates to tuckers or creasers, and, as incidental thereto, to certain improvements by which the vertical motion of the presser-foot is increased or diminished, according to the thickness of the material being sewed.

Inthe accompanying drawings, Figure 1 is a perspective view of a tucker or creaser; Fig. 2, a view of such a creaser applied to the resser-foot of a sewing-machine with part of the goose-neck or frame of the machine in section, so as to show the devices for vertically 2o actuating the presser-foot. Fig. 3 is a side or end view of the same, also partly in section with some of the parts broken away; and Fig. dis a detail view ofthe lever which actuates the presser-foot. 7

The spring-arm or creaser-bar A, which is connected by a curved or elliptic spring with the bottom plate of the tucker, is carried on the upper face of the presser-foot B, and is socurely attached thereto by a set-screw, a,which passes through an elongated slot in the bar A and screws into a lateral extension, b, which projects upon the right-hand side of the presser-foot. A headed screw-bolt, 0, passes through this slot, and also screws into a socket in the lateral extension, but does not clamp the creaser-bar. By loosening the set-screw a, therefore, the bar maybe adjusted laterally to bring the line of the crease closer to or farther from the line of stitching.

A gage, D, for regulating the line of the stitch in the ordinary way, is carried upon the base A of the tucker, and is held in any desired position by a set-screw, E, which passes through a slot in the gage-plate D and screws through the base-plate A of the tucker and into the bedplate of the machine. By adjusting the tucker, therefore, relatively to the prcssenfoot which carries the creaser-bar, and

vertical play to vibrate the creaser-bar, we provide means by which to give the required movement for all the various thicknessis of material. \Vhere the material being tucked is comparatively thin, the vertical motion of the resser-foot that is necessary is obtained in the following way: An enlargement or projecting block, F, is formed on the under face of the resser-foot, and the feed-foot, in rising, comes against it and lifts the presserfoot. The motion is ordinarily sufficient for comparatively thin material. In order to obtain a more extended movement of the presserfoot, however, we supplement the device just described by mechanism which acts on the presser-foot bar to raise and lower it. This mechanism is carried in the end of the frame of the machine, shown in sections in Figs. 2 and 3. 1 l

The needle-bar G is actuated in the ordinary way by a pin carried by a revolving disk, which pin works in a sinuous track, G, carried on the needlebar, so that as the disk rotates the needle-bar is worked up and down. Upon this disk H we form a cam-extension, h, which works upon a roller carried in the end of a bent arm, I, which is pivotally connected with the resser-foot bar, as shown more especially in Figs. 3 and 4. The bent armIhas its bearing at or about its elbow i upon an eccentric-disk, K, carried on the end of a thumb-bolt, L, which projects outside the casing. When the disk K is turned by the operator of the machine, so as to bring its narrowest side upward, the bent lever I rests upon it, but is permitted to fall so low that the cam h on the disk H will not come in contact with the roller on the end of the arm, and there is therefore no motion of the presser-foot bar 0 struck by the cam h. As the cam comes against the roller, that end of the lever I is thrown down, and, rocking upon the disk K as a fulcrum, elevates the presser-foot bar. As soon as the cam has passed the roller on the lever I, the presser-foot is thrown down by the spring S. By adjusting the disk K to elevate the lever I more or less, the vertical motion of the presser-foot may be varied to suit different materials. This device, in connection with the enlargement on the sole of the presser-foot, gives a complete range of ad justment to suit the varying materials which may be placed in the machine.

Many of the details of the invention may of course be varied without departing from the essential particulars of our invention. For instance, the lever instead of being actuated by a cam on the disk II, might be properly moved by a suitable conformation ofthe under side of the track G on the needle-bar; nor is our invention confined to the specific way of mounting the creaser-bar on the presserd'oot.

In a creaser of this character, operated by the presser-foot of a sewing-machine to which varying degrees of vertical motion are imparted, some adjustment of the creaser itself is desirable. The creaser v is therefore placed on a bent or elliptic spring, V, which is carried on the end of the creaser-bar, and the creaser may be adjusted toward or away from the under side of the creaser-bar by means of a thumb-screw, V.

A heel on the presser-foot in connection with a creaser-bar carried by the presser-foot is'disclai med herein, as such claim is embraced in another application filed by us December 13, 1883, and numbered 114,446.

We are aware that devices for controlling and adjusting the vertical movement of the presserfoot of a sewing-machine are old.

We claim as our invention- 1. The combination, substantially as set forth, of thepresser-foot, its lateral extension, the longitudinally-s1otted creaserbar mounted thereon, and actuated by the presser-foot to crease the cloth, creasing devices, the guide 0 and setscrew a for adjusting the creaser; bar on the presser-foot, the slotted base-plate A of the tucker, and a setscrew,-'E, for adjustably securing it to the bed-plate of the machine.

2. The combination, substantially as set forth, of the creaser-bar, the bent or elliptic spring V, the creaser 22, carried thereby, and the screw for adjusting the creaser, which screw'is carried by the creaser-bar, and works against the elliptic spring in line with the creasing device.

8. The combination, substantially as set forth, of the creaser-bar, an elliptic creaserspring, V, carried by the creaser-bar, and a screw, V, for adjusting the spring V.

4. The combination, substantially as set forth, of the presser-foot, the creaser-bar mounted 011 and actuated by the presser-foot,

devices for securing the creaser-ba-r on the the lever pivoted "thereto, a cam-face which acts on the lever, and the adjustable fulcrum

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