US121967A - Improvement in needle-holding devices for sewing-machines - Google Patents

Description

JEROME B. SECOB.

Improvement in Sewing Mphines.

GMQMQQ;

Patented Dec 19.1871.

AM kliDTO-UTHDGEAFIl/C LQ MK] OSBORNE? PHUFESSJ UNITED ATES PATENT OFFICE.

JEROME B. SEGOR, OF CHICAGO, ILLINOIS.

Specification forming part of Letters Patent No. 121,967, dated December 19, 1871.

To all whom it may concern:

Be it known that I, JEROME B. SEooR, of the city of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sewing-lllachines, of which the following is a specification, reference being had to the accompanying drawing.

My invention consists in the combination of the needle-bar N, the band N the set-screw N and presser N and the object of my invention is to secure the needle in the metallic bar in such a manner that it will be firmly held and be readily adjusted, and always be in the same position, whatever the size of the needle may be.

Figure 1 represents a side elevation of that portion of the needle-bar to which the needle is attached; Fig. 2, a vertical central section of the same with the needle attached; and Fig. 3, a transverse sectional view of the same at the line as as.

It is important that needles of different sizes can be used in a machine, and it is also important that all the needles make their vertical motion in the same line in order to avoid breakage and work evenly and smoothly with the other parts of the machine.

N is the needle-bar.

I N is a band surrounding the lower end of the needle-bar.

N is a pointed set-screw, which passes through the band and sets into a slight recess in the needle-bar and prevents the band from falling off when the screw is not tightened, as shown. N 3 is a presser rigidly attached to the band N, as shown at its side opposite the set-screw N. This presser extends through a slot in the needle-bar and presses against the needle as the set-screw N is turned. The needle is always pressed against the side of the needle-hole in the needle-bar next to the setscrew, and that is made to fit the line of the motion of the needle when in operation.

It will be observed that, Whatever the size of the needle, it is inserted in the needle-bar as shown in Fig. 2, and by turning the set-screw the band causes the presser to press the needle against that side of the hole toward the setscrew, thereby always holding the needle in the same position-that is, the side of the needle is always against the same side of the needle-hole. This arrangement allows all needles, whatever their size, to pass at the same distance from the shuttle, and so prevents the dropping of stitches. The presser is held in place by a small pin passing through the band N, as shown.

' Having described the construction and operation of my improvements, what I claim, and desire to secure by Letters Patent, is

The combination of the needle-bar N, the ring' or band N the set-screw N and presser N, when constructed and operated as and for the purposes described.

JEROME B. SECOR.

Witnesses:

HEINR. F. BRUNS,

FRANCIS F. WARNER. (134)

Images