US1387143A

US1387143A - atent office

Info

Publication number: US1387143A
Authority: US
Publication date: 1921-08-09
Anticipated expiration: 1938-08-09

Description

J. A FLANAGAN.

SEWING MACHINE.

APPLICATION FILED FEB.4.1920. RENEWED JUNE 1, 192i.

1,387,143. Patented Aug. 9, 1921.

III I! H! earner OFFICE.

JAMES ALEXANDER FLANAGAIN, OF TORONTO, ONTARIO, CANADA.

SEWING-dlIi-iCI-IINE.

Specification of Letters Patent.

Patented Aug. 9, 1921;

Original application filed February 4:, 1919, Serial No. 274,302. Divided and this application filed February 4, 1920, Serial No. 2563M.

To all to liom it may concern:

Be it known that l, JAirns ALEXANDER FLANAGAN, of the city of Toronto, in the county of York and Province of Sntario, Dominion of Canada, have invented certain new and useful Improvements in Sewing Ella chines; and I hereby declare that the following is a full, clear, and exact description of the same, this application being a division of my concurrent application No. 274,902, filed February elth, 1919.

My invention relates to an in'iprovement in sewing machines of the type shown and tie scribed in my concurrent application Serial No. 274:,902, and the obje t of the invention is to so design the machine that it may be used either for sewing fat or tubular work, or for darning.

With this object in view, the feed and looper mecl'ianisrns are inclosed in a specially.

i'lGShIltAl housi com jrising a spheroidal partand a tubular part constricted with re- {ilftlil to the spheroidal part the top of which forms a threat plate for the feed dog.

The bed of the machine is constructed with an opening of relatively considerable width for access to the housing when the machine is be used for darning or for sewing tubular work, and this opening is provided with two removable cover slides, which together with the throat plate close the opening, when the machine is to be used. for sewing flat work.

For an understandin of the invention reference is to he hadto the following description and to the accompanying drawings in which:

Figure l, is a vertical sectional view of a 2'1" ient of a sewing machine,

l 2, is a fragmentary plan view of the cover slides showing in dotted lines the housing for the feed and looper mechanisms.

Fig. 3, is a fragmentary view similar to 2, showing the cover slides removed. in re characters of reference refer to like parts throughout the specification and drawings.

In the preferred construction of the machine, the horizontal feed shaft a is of a tubular character and is journaled in suitable bearings 5, Z), forming part of, or rigidly connected to the frame Z), and the hori zontal looper shaft 0 extends lengthwise through the feed shaft and projects beyond the ends thereof.

Serial No. 474,302.

This arrangement brings the feed and looper shafts into coaxial relation and permits of the feed and looper mechanisms being centralized with regard to each other, and to the opening 2' in the bed of the machine. This opening 2' is ofrelatively considerable Width for the purpose hereinafter set forth, and is normally closed, when the machine is used for sewing flat work, by two removable cover slides 2', 2'.

Fixed on the ends of the feed shafts are raps (Z, d", constituting the bearings for the looper shaft 0, and fixed on the looper shaft in front of andiadjacent to the bearing d, is the feed cam e imparting vertical reciprocation to the feed dog 7. The feed dog f is provided with a feed bar 7, which moves laterally in a guideway on the top surface of a feed slide 6 and this slide has a central opening in which operates the feed cam e.

Extending horizontally'from the feed bar is a pin f, which enters a slot d3 in the rocker arm d fixed on the feed shaft. 7

At or near the rear end of the feed shaft a is a feed drive a impartingarocking movement to the. feed shaft, during which the rocker arm causes the lateral reciprocation of the feed dog and feed bar.

At the same end of the looper shaft 0, as the feed drive a, is the drive 0 for the looper shaft, which imparts rotary mov ment to the looper shaft-and causes the rotation of the feed cam.

During the operation of the drives a' 0., the feed shaft a is rocked in the bearings 7), Z), and causes the oscillating movement of the rocker arm and the lateral recip ocation of the feed dog concurrently with the rotation of the looper shaft, the feed'cam during the rotation of the looper shaft effectthe Vertical reciprocation of the feed- The top of the spheroidal part It is flattened or provided with a throat plate h", suitably slotted at 71, for the feed dog 7". The frame 6 0f the machine is formed with a comparatively wide opening above the housing and this opening is closed by the two removable cover slides 2', a", which when withdrawn from the frame permit of free access to the housing, so that it can then be used as a support for tubular work.

When the cover slides i, a", are withdrawn from the bed of the frame, tubular work, for instancesocks, sleeves, trouser legs or the like, may be drawn over the spheroidal part of the housing, and in the direction of the bearing (3, until the spot where the sewing is to be done comes into line with the needle bar of the machine, the throat plate it then supporting that part of the surface of the work where the sewing is to be done and the spheroidal part of the housing distcnding the work during the sewing operation.

The cover slides 2', i, are complemental to the throat plate It" and when they are in position, they and the top surface of the throat plate h"'are in the same plane. The throat plate It" is shown to be of a circular shape, and to accommodate it, the adjacent edges of the cover slides 2', i, are formed with central semi-circular recesses it, each corresponding to one-half of the throat plate 72,, these recesses extending inwardly from these edges of the cover slides 2', i, so that when the cover slides are in their assembled position their edges will abut on the line Various means maybe provided for securing the housing in position, a convenient means for this purpose, being to form the inner end. of the tubular part it with a circular flange h to abut against the adjacent face of the bearing b,-and to fasten this flange to the bearing by means of machine bolts or screws 7''.

l or access to the interior of the housing, the spheroidal part It is made with a hinged segment forming a gate Z, the chord of which is preferably greater than the diameter of the shuttle holder, so that ample space may be provided for access to the interior of the housing.

Having thus fully described my invention, what I claim as'new and desire to secure by Letters Patent is:

1. In a sewing machine, the combination of the feed and looper mechanisms, and a housing therefor comprising a spheroidal part and a horizontally extending tubular part constricted with regard to the spheroidal part and carrying the latter at the end thereof.

2. In a sewing machine, the combination of the feed and looper mechanisms, and a housing therefor comprising a spheroidal part, a horizontally extending tubular part, constricted with regard to the spheroidal part and carrying the la ter at the end there of, and a movable segment for the spheroidal part providing access to the feed and looper mechanisms.

3. In a sewingmachine, the combination of the feed and looper mechanisms, and a housing therefor comprising a spheroidal part and a horizontally extending tubular part constricted with regard to the spheroidal part, and carrying the latter at the end thereof, the spheroidal part having in its top surface a throat plate for the feed doe:

. i sewing machine comprising a bed plate having an opening of relatively considerable width and removable cover slides for the opening, in combination with feed and looper mechanisms below the opening, and a housing tl erefor comprising a spheroidal part and a tubular part constricted with regard to the spheroidal part.

5. A sewing machine comprising a bed plate having an opening of relatively con siderable width and removable cove-r slides for the opening, in combination with feed and looper mechanisms below the opening, and a housing therefor connorising a spheroidal part and a tubular part constri .LGCl with regard to the spheroidal part, the spheroidal part having a threat plate in its top surface complemental to the cover slides.

Toronto, imtario. @ctober 28th, 1919.

-.LAlvlliS ALEXANDER FLANAGAN.

Signed in the presence o f CHAs. H. Rrorrns, 7. J. GILoHRIs'r.