Improved Bobbin Devices for Sewing Machine Shuttles.
Year: 1898

page_text: Date of Application, 1st Oct., 1898-Accepted, 14th Jan., 1899
COMPLETE SPECIFICATION.
Improved Bobbin Devices for Sewing Machine Shuttles.
I, ADOLF OSKAR HUGO MARQUARDT, of 6, Gr. Theater Strasse, Hamburg,
Germany, Merchant, do hereby declare the nature of this invention and in what
manner the same is to be performed to be particularly described and ascertained.
in and, by the following statement:―
In using sewing machines, it is generally felt to be a disadvantage that the
thread in the shuttle has to be wound off from a large bobbin onto a smaller bobbin
suitable to the dimensions of the shuttle.
In order to avoid this disadvantage, the shuttle has been so enlarged. as to be
enabled to receive an entire spool of thread and the machines have been corre-
spondingly altered in construction; but the inconveniences of so doing were such
as to prevent the general adoption of such system, and the use of small bobbins
which had, to be wound with thread by the user had to be continued. These are
not only inconvenient, but waste time, especially when thread of different colours,
that cannot be used up at the one sitting, is employed, and necessitate the use
of several bobbins.
The object of the present invention is to dispense with this troublesome reeling
by the user, without making structural alterations in the machine, and, to this
end, small rollers or reels are made of some cheap material such as soft wood or
the like and are furnished ready wound with thread of the desired character, and
are rendered applicable for use in a sewing machine by the application of caps,
plates or the like by which the reel ends are so strengthened and provided with
journals. that the reels are rendered suitable for use in the shuttle of a sewing
machine.
The plates or caps may be of various kinds, and either made cheaply so as to be
furnished together with the cheap reels, and so that, after the thread is used,
they may be thrown away as of no value, or they may be of better make with
journals outside and hold-fast projections inside so as to be fitted onto the cheap
reel, being removed therefrom and preserved for further use when the reel is
used up.
Several modifications of the invention are represented on the accompanying
drawings, in which:-
Figs. 1, and 2, show end views and side views of two forms of such caps or
plates;
Fig. 3 represents a reel fitted with removable end plates showing the same
partly in side view and partly in section; Fig. 4 represents an end view of one of
the plates; and
Figs. 5, 6, and 7, represent a reel fitted with end plates that are not removable.
f, represents the plates or caps, which may be made of any suitable material
of sufficient hardness. Sheet metal is very suitable; and Fig. 2, represents a
cap-plate, f, stamped therefrom, the journal, g, being "upset thereon, and the
hold-fasts, h, being bent up from the same plate in the opposite direction.
According to Fig. 1, the plates are made in a single piece, the hold-fasts, h, being,
D 877

page_text: if desired, separately inserted; their number may be varied as desired, and a
single one and a centering point in the middle of the plate, f, may be used.
When the reel is exhausted and therefore without value, the plates, f, are
removed, and may be again used for unwinding further reels furnished ready
wound with thread. Or, the wound reels may be furnished ready fitted with such
plates, f, so as to save the user even the small trouble of fitting the plates upon
the reels.
The reels may, however, be fitted with plates, c, with catches bent over or other-
wise made irremovable, vide Figs. 5, to 7.
It will thus be seen that the improved devices upon application to the wound
reel ends (Fig. 3) adapt the latter for application to and for unwinding in the
shuttle of a sewing machine.
A removable pair of plates may serve for unwinding an indefinite number of
reels, so that a stock of wound reels will not cost more than a large reel of thread
from which the thread has to be unwound by the user, as the material of which
the reels are made is of no value; and by the use of the invention a material
saving of time and trouble will be effected."
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is
1. A device for enabling small reels made from cheap material of wound thread
or the like to be applied to and unwound in the shuttle of a sewing machine, the
device being characterized by providing the reel ends with strengthening plates
having, hold fast projections on the inside and journals on the outside, as set
forth.
2. A device such as referred to in Claim 1, in which the strengthening plates are
not applied removably to the reel ends but are permanently applied thereto, by
having their hold-fast catches or points bent over, as set forth.
Dated this 30th day of September 1898.
DAY, DAVIES & HUNT,
Chartered Patent Agents, 321, High Holborn, London, W.C.,
Agents for the Applicant.