Improvements in Clocks or other Timepieces.
Year: 1893

page_text: Date of Application, 1st Sept., 1893
Complete Specification Left, 1st June, 1894-Accepted, 1st Sept., 1894
PROVISIONAL SPECIFICATION.
Improvements in Clocks or other Timepieces.
I, AUGUST ARTMANN, of Schwabenmünchen, Germany, Watchmaker, do hereby
declare the nature of this invention to be as follows :-
The known construction of clocks and other timepieces have the disadvantage,
that the rear plate must be removed, when a broken spring is to be changed for a
new one. The mounting of the same requires much pains and waste of time, as the
different pins must be put simultaneously into the corresponding holes of the rear
plate.
The object of this invention is to avoid the said inconvenience, and this is
accomplished in the following manner;
The pin holes for the barrel arbors are considerably enlarged and toward the
edges of the plate they are enlarged slot-like, so that the pin put in the front
plate may be led with its upper end laterally through the wide opening of the rear
plate.
Now a yoke is put upon the pin, which yoke is provided with a pin-hole fitting
for the barrel-arbor and formed by a projecting socket, fitting itself into the
enlarged pin-hole of the plate, said yoke is attached on both sides of the socket by
two or more screws to the rear plate. In addition, the extremity of the spring
is hung in a hook of the clock-pin or arbor.
When a new spring is to be put in, the same is hooked into the hook, then the
barrel arbor is put in the fore plate and the fore extremity into the enlarged recess,
hereupon the yoke is attached to the plate after having previously put the spring
or barrel arbor in the respective opening, whereupon the barrel (spring) is bent or
wound up by turning a key put upon the barrel arbor, disengaging at the same
time the ratchet pawl.
Dated this 1st day of September 1893.
FAIRFAX & WETTER,
433, Strand, London, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Olocks or other Timepieces.
I, AUGUST ARTMANN, of Schwabenmünchen, Germany, Watchmaker, 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:-
The known constructions of clocks have the inconvenience, that the rear plate
must be removed, when the broken spiral spring is to be exchanged for a new one.
The mounting of this plate requires much pains and waste of time, as the different
pins must be put simultaneously into the corresponding holes of the rear plate.
The object of this invention is, to avoid this inconvenience, and is effected in the
manner hereafter described and illustrated by the accompanying drawings, of
which:
Fig. 1 represents the rear plate provided with the improved construction.
Fig. 2 is a section of the same along the line A-B of Fig. 1.
Fi
2 is a section alone line ( n.

page_text: Fig. 4 represents the manner of attaching the spiral spring to the clock stay or
bolt.
The pin holes for the barrel arbors are considerably enlarged, and towards the
edges of the plate they are formed slot like, so that the pin put in the fore plate
may be led with its upper end or extremity laterally through the wide opening of
the rear plate.
Now a yoke, B B¹ is put upon the pin, which yoke is provided with a boss and
bored out to receive the spring arbor C. The said boss fits into the enlarged pin
hole of the plate, and the yoke is attached to the rear plate A on both sides of the
socket by two or more screws. The extremity of the spring E is hung in a hook s.
of the clock-bolt or stay S. When a new spring is to be put in, the same is
attached to the hooks by means of an end plate D, then the barrel or spring arbor
is put in the foreplate and the fore extremity into the enlarged recess; thereupon
the yoke B, B', is attached to the plate, after having previously put the spring
arbor C in the respective opening, whereupon the spring is bent or wound up by
turning a key put upon the spring arbor, after having disengaged the ratchet pawl.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is ;-
In a clock mechanism, the combination of the rear plate A having a slot like
opening, with a yoke B provided with a boss fitting into the said opening and bored
out to serve as a bearing for the spring arbor, and a spiral spring fixed to a hook
of the clock stay or bolt S, substantially as described.
A. ARTMANN,
By Fairfax & Wetter,
443, Strand, London, Agents.
A. ARTMANN,
By Fairfax & Wetter,
443, Strand, London, Agents.