US1170442A - Lock-stitch sewing-machine. - Google Patents

Description

A. FINSETH.

LOCK STITCH SEWING MACHINE.

APPLICATION FILED FEB- 23, 1915.

1,170,442. Patented Feb. 1, 1916.

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ANDREW FINSETH, OF OSLO, MINNESOTA.

LOCK-STITCH SEWING-MACHINE.

Application filed February 23, 1915.

To all whom it may concern:

Be it known that I, ANDREW FINsnTH, a citizen of the United States, residing at Oslo, in the county of Marshall and State of Minnesota, have invented certain new and useful Improvements in Lock- Stitch Sewing- Machines; and I do hereby declare the following to be a full, clear, 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 the letters and figures of reference marked thereon, which form a part of this specification.

This invention relates to new and useful improvements in lock stitch sewing machines and comprises a simple and efficient apparatus of this nature having various details of construction, combinations and arrangements of parts which will be hereinafter fully described, shown in the accompanying drawings and then specifically defined in the ap pended claim.

My invention is illustrated in the accompanying drawings in which:

Figure 1 is a side elevation of the machine, a part being shown in section. Fig. 2 is a bottom plan view of the apparatus.

Reference now being had to the details of the drawings by letter, A designates the table of the machine from which rises a goose neck B upon which is mounted a spindle C for the reception of the spool D, and mounted to reciprocate within suitable guideways in the goose neck is a needle bar E. A spring F is fastened at its lower end to the goose neck and its upper end to the bracket arm F upon the needle bar E and serves as a means for throwing the needle bar down after having been raised by the lever H, which latter is pivotally mounted upon a pin 1 projecting from the goose neck.

Pivotally mounted upon a pin N underneath the table is a shuttle bar 0 carrying a shuttle O at one end in which is mounted the bobbin 0 carrying thread. To one end of the shuttle bar is connected a link Q which in turn is pivotally connected to one end of the crank shaft Q journaled in suitable bearings Q upon the table, and R designates a rod pivotally connecting one end of the crank shaft with the lever H. Upon Specification of Letters Patent.

Patented Feb. 1, 1916.

Serial No. 10,011.

reference to Fig. 2, it will be noted that a rod T is pivotally connected at T to the long arm of the shuttle bar at one end and its other end has an eye which is connected to an eye S upon the rock shaft S, which latter is journaled in suitable bearing underneath the table. At one end of the shaft S is a crank S which engages a recess S in the reciprocating feed member J which has an integral upwardly extending shoe J passing through an aperture in the table and over which the work passes. A presser foot L has a vertically movable shank portion from which a pin L projects and to which one end of a spring L is attached and which spring is fastened at its upper end to a pin if but which forms no part of the present invention.

The operation of my invention will be readily understood and is as follows: By the tilting of the lever H upon its pivot, the needle bar may be reciprocated and, through the medium of the pivotal rod and shaft connections intermediate the lever and the shuttle bar, the latter will be tilted upon its pivot and, by reason of the connections between the long arm of the shuttle bar with the feed member, the latter will be given a reciprocating movement.

What I claim to be new is A look stitch sewing machine comprising a table with a goose neck, a reciprocating needle bar mounted therein, a pivotal shuttle bar pivoted to the under side of the table, a lever pivotally mounted upon the goose neck and having pivotal connection with the needle bar, a crank rock shaft journaled upon the table, a rod pivotally connected to one end of the crank shaft and said lever and its other end passing through the table and pivotally connected to one end of the shuttle bar, a reciprocating feed bar mounted upon the table, a rock shaft journaled in bearings underneath the table and having a crank end engaging a slot in said work member, and an arm with pivotal rod connections with the shuttle bar.

In testimony whereof I hereunto ailiX my signature in presence of two witnesses.

ANDREW FINSETI-I.

Witnesses:

O. P. FINsE'rH, K. D. FINsETI-I.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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