US237442A

US237442A - Sewing-machine

Info

Publication number: US237442A
Authority: US
Publication date: 1881-02-08
Anticipated expiration: 1898-02-08

Description

G. F. NEWBLL. Sewing Machine.

N 237,442. Patented Feb. s,1ss|.

INVENTOR WITNESSES ATTORNEYS.

N'FETERS, PHOTO LITMD3RIFHEFL WASHINGTON, D C.

l UNITED STATES PATENT Gr ntee.

GEORGE 1+. NEWELL, on GREENFIELD, MASSACHUSETTS.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 237,442: dated February 8, 1881.

Application filed November 15, 1879.

To all whom it may concern Be it known that I, GEORGE F. NEWELL, of Greenfield, in the county of Franklin and State of Massachusetts, have invented Improvements in Sewing-Machines, of which the following is' a specification.

Figure 1 is a sectional side elevation of the device on line a: as, Fig. 2, showing the mechanism for operating the needlelever. Fig. 2 is an inverted view of the mechanism, showing the device for operating the shuttle-driver. Fig. 3 is a detail view of the driving-bar and its connections. Fig. 4 is a sectional view on line 1 1 Fig. 2.

Similar letters of reference indicate corresponding parts.

The invention relates to an improvement in means for connecting the needle-lever and shuttle-driver with the driving-shaft. the object being to produce a positive, uniform, noiseless motion with minimum friction. I employ a short driving-sh aft and arrange it transversely of the sewing-machine table, or at right angles to the plane of vibration of the needleoperating lever, so that both the latter and the shuttle-driver may be connected to and operated by a disk on the inner end of theshaft, as described hereinafter.

In the drawings, A represents the drivingwheel, and B the hand-wheel keyed on the driving-shaft O, which shaft 0 is journaled in the hangers a a. A crank plate or disk,D, is

fixed centrally on the inner end of the shaft 0, and to this disk D is eccentrically connected a parallel and opposite drivei" or disk, E, by the crank-pin b. In the opposite face of this disk E is a socket, 0, near the edge farthest removed from the crank-pin b, and in this socket c rests the ball-shaped end of the rodF, whose other end is pivoted in a slot, d, made in the pivoted end of the shuttle-driver G.

Fixed'on the crank-pin b is the driving-bar H, which projects upward through the standard I of the sewing-machine, and is connected with the needle-lever K (which is pivoted in the arm L by the pin g) bythe link M, the said driving-bar H having in its upper end a slot, f, which enables it to straddle and move over the end of the lever K and the link M when the device is in operation.

The time-link N afiords a fulcrum to the driving-bar H, one end of the said link N being pivoted in the slot t of the driving-bar H,

the other end of said link being pivoted to and within the standard I. This link N regulates the'time of the needle by giving direction to the driving-bar H, which moves forward and rearward while the needle-lever K is at rest at its extreme upward and downward motion.

As the driving-shaft O is revolved a reciprocating motion is given to the driving-bar H by the crank-pin Z), and a revolving motion is given to the ball end of the rod F, that rests loosely in the socket c of the rod-driver E, the other end of the said rod F being pivoted on pin a, so that it may have a slight vertical motion in the slot d of the shuttle-driver G, which itself is pivoted on the vertical pivot m to the bed-plate 0, so that it may move in a horizontal plane. The combined movements cause the shuttle end of the said shuttle-driver G to reciprocate back and forth horizontally with a proper operating motion.

In respect to the connection between the shuttle-driver G and driving-shaft O. I will state that I am aware a shuttle-driver pivoted substantially as illustrated in my drawings has been provided with a rigid arm whose free end works in a cam-groove in a shaft arrangedlengthwise of the table of a sewing-machine, as in Patent No. 42,284. I am further aware that rocking motion has been imparted to a needle-operating shaft by meansof adriving-bar having a link pivot or fulcrum, and pivoted at its lower end to a disk fixed on a rotary shaft arranged lengthwise on the table of a sewing-machine, as in Patent No. 29,035. Such combination and arrangement of parts I disclaim.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. In a sewing-machine, the combination, with the pivoted vibrating shuttle-driver G, having a slotted head, the driving-shaft C, arranged transversely of the table 0, and the disk E, attached to said shaft, of the rod E, which is pivoted to said part G and loosely connected with the disk E, substantially as shown and described, so that rotation of the latter imparts circular motion to the free end crum links M N, as shown and described, IQ of rod F, and thereby vibrates the shuttlewhereby said disk, driving-bar, links, and driver, as specified. needle-lever all Work in the same or parallel 2. In af sewing-machine, the combination, planes, as specified. 5 with the ulcrumed needle-lever K and with the driving-shaft 0, arranged at right angles GEORGE FRANKLIN NEWELL' to the plane of vibration of said needle-lever Witnesses: and having the disk D fixed thereon, of the W. A. WAITE, forked driving-bar H and connecting and full GEORGE A. WHIPPLE.