Improvements in Toy Sewing Machines.
Year: 1897

page_text: Date of Application, 31st July, 1897-Accepted, 11th Sept., 1897
COMPLETE SPECIFICATION.
Improvements in Toy Sewing Machines.
I, FRIEDRICH WILHELM MULLER, trading as F. W. Muller Jr., at No. 20
Cuvrystr, Berlin, S.O., in the Empire of Germany, Manufacturer, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described in and by the following statement:-
-
This invention relates to a sewing machine, the number of operating devices of
which is restricted to what is absolutely necessary, so that the machine, owing to
the simplicity of its construction and the small cost of its manufacture, is Sit to
be used as a toy for children.
The characteristic feature of the said sewing machine is that by one single
revolution of the hand-wheel two-and-a-half stitching movements are produced,
to accomplish which purpose, the hand-wheel or fly-wheel is connected with 'he
looptaker spindle, not direct, but through the medium of a gear wheel..
In the accompanying drawings Figure 1 is a front elevation of the complete
sewing machine, with the hand-wheel shown in section.
Figure 2 is an elevation of the hand-wheel and the means for the transmissio
of motion connected therewith.
The hand-wheel a is revolvably mounted upon a spindle or pivot secured to
the machine frame, and provided with an inwardly toothed annular rack or ring.¹,
meshing with a gear wheel c. This gear wheel is mounted upon the pin d of a
crank arranged at the end of the looptaker spindle e, so that the said toothed
wheel c, whenever the hand-wheel is turned, will rotate about an imaginary
extension of the axial line of the looptaker spindle.
10 the crank pin d there is further attached a link g which engages with the
rear arm of the needle-bar lever h.
At each single revolution of the hand-wheel a, the gear wheel c completes two-
and-a-half turns, corresponding to two complete and one half of a stitching move-
ment of the needle-bar, and also to the same number of revolutions of the looptaker
shaft. For the protection of the looptaker i,-whereby the loops are formed, —a
special case k is ovided, which may be secured in position by screws or any other
suitable means.
This sewing machine will with one thread only, and without any shuttle,
produce a plain chain-stitch seam.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed, I declare that what I
claim is:-
1. A toy sewing machine wherein by a single revolution of the hand or fly-
wheel, two-and-a-half revolutions of the looptaker spindle or shaft and two-and-a-
half movements of the needle-bar are produced.
2. In the sewing machine characterised in the first claim, the provision of a
fly-wheel (a) with an inwardly toothed ring (a), in gear with a toothed wheel (c)
secured to a crank (f) mounted on the looptaker spindle (e).

page_text: 3. In the sewing machine referred to in the first claim, the provision of a
protecting casing (k) for the looptaker ((i)...
Dated this 31st day of July 1897.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicant.