US256141A - Sewing-machine - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

L. E. HIGBY.

SEWING MACHINE.

No. 256,141. Patented Apr. 11,1882,

.nu x

' w William/ 14w Wz'nesses. ,Z7zz/en6o r 494w JWM Inf/wally lyfiy any.

N. FETEns Phoh-Lilhngmphir. Washi n nnnnnn c.

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

L. E. HIGBY.

SEWING MACHINE. No. 256,141. Patented Apr. 11,1882.

77222105325.- I Zn 1/922 01" lai zerlr i b gzy. MM Hem 5y du I UNiTED STATES ATENT 01mins;

' LUTHER E. HIGBY, or BRATTLEBOBOIIGH, VERMONT.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 256,141, dated April 11, 1882,

Application filed April 16, 1881.

To all whom "it may concern:

Be it known that I, LUTHER E. HIGBY, a resident of Brattleborough, in the county of WVindham and State ofVermont, have invented certain new and useful Improvements in Sewing-Machines; and I do hereby declare the following to be afulholear, and exact-description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

The object of this invention is to facilitate the action of sewing-machines, to reduce the cost of construction by doing away with certain intermediate parts, to render their operation noiseless, and to simplify and otherwise improve said machines.

The invention consists in the construction, combination, and arrangement of parts, as will be hereinafter fullyand definitely embodied in the claims.

Referring to the accompanying drawings, (comprised in two sheets,) in which similar letters of reference indicate like parts in each of the several figures, Figure 1 is a sectional elevation of a portion of a sewing-machine embodying and illustrating my improvements; Fig. 2, a horizontal section taken through Fig. 1 in the direction indicated by the arrow 5 and Fig.3is an enlarged side elevation of the mechanism, more clearly illustrating the same.

In carrying out my invention I construct upon the horizontal driving-shaft D,which opcrates the sewing mechanism, an eccentric, G,

which actuates a connecting-rod, G, which in turn operates the feed-shaft L by means of a crank, K, having the same stroke as the eccentric G, as will be manifest. Said connectingrod is held in engagement with eccentric G by eccentric-strap H, which encircles said eccentric O, as indicated in Fig. 1. The feed-shaft L operates the feed-bar N by means of a cam, M, which causes the said bar and feed therewith connected to move both vertically and laterally.

The connectin g-rod G has a supplemental ad- A justable rod, S, arranged therewith,as shown,

to aid in its adjustment upon the eccentric and crank. Said rod G also actuates the shuttle- (N'o model.)

' leverB by means'of a shuttle-lever shaft, A,

as will be hereinafter set forth.

The shaft D carries a hanging socket, I, and the table or bed-plate W' carries a co-operatiugsocketed bracket, J, which parts, taken together, form bearings for the said shuttle-lever shaft A. Upon the latter are formed arms F, through which the connecting-rod G passes, and near the lower extremity of said shaft is rigidly secured the shuttle-lever B.

As will be clearly understood, the eccentric G, as the shaft D revolves, imparts to the connecting-rod G not only a vertical motion,'but a lateral, which causes the shaft A to move reciprocally in the sockets or bearings I J,

thereby imparting to the lever B therewith,

rigidly connected the required reciprocating larly in Fig. 2. I

' The shuttlc-leverB is firmly secured to shut-- tle-lever shaft A in a direct line with the lower arm, F, a portion of which arm passes through shuttle-lever B, so that each steadies the other, and the connecting-rod G, slidingin the arms F F, relieves the shuttle-lever shaft of considerable strain and secures an easy movement of the parts.

The advantages of my improved mechanism are several, to wit: A direct action is imparted to the shuttle-lever B and feed-bar M. The device is simple, compact, easily constructed, silent when in motion, anddoes away with intermediate levers, studs, and ball-joints, all of which give more or less backlash or lost motion.

By means of the box I, which hangs from the driving-shaft D, as indicated in Figs. 1 and 4, and which adj ustsitself to the shuttle-lever shalt when the extremity of the same is in-. serted in the socketed bearing therein, much time, skill, and labor are saved in constructing the machine.

In machines heretofore in use, and of which we are aware, havin ga shuttle-lever shaft therein similarly disposed in relation to a connectin g-rod, G, and having rigid bearings for the extremities thereof, much care and skill are required to prevent the several bearings from binding, and thus superinducing unnecessary friction; but by my device the box I, by turnin g or allowing of being turned upon the shaft I), adjusts itself in proper and easy bearing relation to theshuttle-lever shaftwithout the exercise of the care and skill above mentioned.

It will be observed, also, that the shaft A, rod G, and connections can be tested before being placed in the arm of the machine, and when satisfactorily constructed to operate can be placedin the machine-arm without further testing.

Having thus described myinvention, What I claim, and Wish to secure by Letters Patent, is-

1. In asewing-machine,thecombination,with the shuttle-lever B, rigidly secured to the shuttie-lever shaft, of said shuttle-lever shaft actu ated to a lateral reciprocating pivotal action in the bearings I J by the connecting-rod G, and having arms F projecting therefrom, the lower arm passing through and working with said shuttle-lever, all said parts being constructed, arranged, and operating substantially as set forth and shown, for the purposes specified.

2. The combination, in a sewing-machine, with the driving-shaft D, of the rod G, connecting the eccentric G and crank upon the extremity of the feed-shaft L, and passing through arms projecting from a shuttle-lever shaft, the said shuttlealever shaft working in the bearing I, hanging from the driving-shaft, and bearing J upon the bed-plate, and having the lower arm, F, passing through the shuttleshaft A, having a lateral reciprocating pivotal action, of the bearing J, receiving the lower extremity of said shuttle-lever shaft, and the box I, suspended from said driving-shaft and supported thereby, and having a socketed bearing directly beneath said driving-shaft adapted to receive and receiving the upper extremity of said shuttle-lever shaft, the whole being arranged and operating substantially as and for the purposes herein set forth and shown.

In testimony that I claim the foregoing I have hereunto set my hand this -7th day of April, 1881.

LUTHER E. HIGBY.

Witnesses:

JONATHAN G. EDDY, FRANK H. FOSTER.

Images