Improvements in the Application of Spring Driving Mechanism to Sewing and other Machines requiring Light Motive Power.
Year: 1891

page_text: Date of Application, 13th June, 1891-Accepted, 25th July,
1891
Improvements in the Application of Spring Driving Mechanism to
Sewing and other Machines requiring Light Motive Power.
We, BRUNO REICHELT, FRANK AUGUST RATTEIT, FREDRICH SPECHT, and
NATHAN MARSH, all of South Bend, in the County of St. Joseph, Indiana, in the
United States of America, Manufacturers, do hereby declare the nature of our said
invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The object of our invention is to fit spring mechanism to sewing machines, and
other machines requiring light motive power.
And in order that our said invention may be particularly described and
ascertained, reference is hereby made to the accompanying drawings, in which
similar letters of reference indicate corresponding parts.
Fig. 1 is an elevation of the case containing the driving mechanism, a portion of
the case being removed to show the improvements more clearly.
Fig. 2 is a plan view of the mechanism with portions of the case g removed.
Figs. 3 and 4 are detail views and sections.
1 is a cylinder containing an ordinary clock spring. z is a toothed wheel, fast
on the cylinder l, and driving the pinion 2. 22 is a toothed wheel rotating with z
and driving the pinion and wheel ; the latter driving the pinion and
wheel. The wheel z drives the pinion 27, the axle of the pinion carrying the
barrel t and serrated driving cone k, both fast on the axle. is a hand wheel for
winding up the main spring. p is a screw threaded sleeve fitting a screw threaded
hole in the bar e and a plain hole in the bar e¹ for guiding the sleeve.. The sleeve p
is fitted with a hand wheel fast thereon, and a brake block b, loose on the sleeve p.
d is a spindle fitting the inside bore of the sleeve p in which it slides freely.
A milled head is fitted to the spindle d.
In Fig. 4 the barrel t is shown in section enlarged.
A slot i is formed therein. In a portion of this slot a metallic stop r, fixed in a
rubber cushion a, is fitted.
Referring to Fig. 3, m is a portion of the frame of a sewing machine, s being the
driving wheel. k is a countersunk serrated wheel, formed to receive the conical
serrated wheel k of the motor, the machine being driven by contact of k with k¹.
When it becomes necessary to reduce the speed of rotation, the spindle dis
drawn backwards, and the sleeve p is screwed forwards so as to press the brake
block b against the barrel t, whereby the speed can be regulated as required. By
pushing inwards the spindle d, it is caused to enter the slot i, in the barrel t, as
shown in Fig. 4, whereby the motion is entirely stopped; the cushion a acting as
a spring.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is :-
1. In the application of a spring motor to the purposes aforesaid, the combination
of a conical serrated driving disc k, actuating a corresponding countersunk disc k¹,
attached to the main shaft of the driven mechanism, substantially as herein before
described and illustrated by the drawings.
2. In a spring motor for the purposes aforesaid, the combination of the brake
drum t and brake block b, the brake block being operated by the screw threaded-
sleeve p for regulating the speed of rotation; the sleeve and brake block b

page_text: carrying the spindle d for stopping the motor by entering the slot i in the drum t,
substantially as herein before described and illustrated by the drawings.
Dated 13th June 1891.
GEO.
DOWNING,
8, Quality Court, London, W.C., Agent.