Improvements in Watches.
Year: 1891

page_text: Date of Application, 18th Sept., 1891
Complete Specification Left, 20th May, 1892-Accepted, 23rd July, 1892
PROVISIONAL SPECIFICATION.
Improvements in Watches.
GEORGE CLEGG KENYON 42 Market Street Hindley Lancashire Watch and
Clock Maker do hereby declare the nature of this invention to be as follows:-
The invention consists of the introduction of a gathering piece or pallet, and a
wheel with internal or external teeth, designed to prevent the breakage of any
delicate parts of the mechanism of watches, clocks and timepieces in case the main
spring breaks at any time.
Dated this 17th day of September 1891.
COMPLETE SPECIFICATION.
Improvements in Watches.
I GEORGE CLEGG KENYON of 42 Market Street Hindley in the County of
Lancashire Watch and Clock Maker 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 :-
My invention has for its object improvements in watches which are designed to
prevent the breakage of any delicate parts of the mechanism in case the main
spring breaks at any time. It is well known that in the case of an accidental
breakage of the mainspring in over winding or from any other cause the spring runs
down very rapidly indeed, and some of the faster running wheels are frequently
seriously injured by their pivots or other parts being broken off or otherwise
injured. Various attempts have been made to rectify this, but hitherto without
great success.
In order that my invention may be clearly understood and easily carried
into practice I have appended hereunto a sheet of drawings, shewing its applica-
tion in one form, that is to the centre wheel D, but it may just as easily be applied
to any other of the train of wheels in a watch and with similar effect.
Figure 1 is a plan shewing a watch plate with various wheels mounted therein
sufficient to illustrate the invention.
Figure 2 is a plan of the centre wheel D removed so as to shew the various
parts connected therewith.
Figure 3 is a sectional elevation of the wheel D with its arbor a' on the line S. T.
Figure 2.
I have shewn upon the drawings the watch plate in which the barrel F is
mounted gearing into the intermediate wheel E which in its turn is geared into
the centre pinion A, which forms a part when the watch is working, and under
ordinary conditions, of the centre wheel D, which again transmits power to to the
various trains of wheels contained in various kinds of watches. Now it is evident
that if the mainspring breaks and supposing the centre wheel D and pinion A be
fast together, as is ordinarily the case, upon the arbor a', the whole power will be
transmitted through this wheel to the various trains of wheels geared therein until
the momentum has been exhausted. Now I prevent this transmission by mounting
upon the centre wheel D Figure 2 a wheel with internal teeth C. Figure 2 and on
the centre arbor a' I mount a loose pinion A to which is attached a gathering
pallet B Figure 3. When the watch is working in the ordinary way the pallet 13
is locked against the wheel C Figure 2 (as shewn in the drawings Figure 2) and
[ Price 8 d l

page_text: :
so carries round the centre wheel and and arbor in regular revolutions, but imme-
diately the main spring breaks the pinion A B Figure 3 becomes detached from
the toothless section of the wheel C Figure. 2 and simply revolves loosely on the
centre arbor, gearing into the teeth of wheel C, until the power is, exhausted.
Thus it will be seen that no damage whatever can be caused to the other parts
of the watch as the gathering pinion A and B and the wheel C carry away all the
force of the breakage without interfereing with any other part of the watch. There
is no danger of its ever getting out of order and however long it may be in disuse
it is always ready and effective in case of emergency for protecting the delicate
mechanism of the watch as explained above.
It will be evident that the device is equally applicable to any other wheels or
portions of the watch to which it may be desired to apply it as I do not confine
myself to the application to the centre wheel only.
..
Having now particularly described and ascertained the nature of my said
invention and in what manner it is to be performed. I declare that what I
claim is:
:
The improvements in watches consisting of
(1) The introduction of a wheel C.with internal or external teeth and
(2) Of a gathering pallet B to run either loose or fast for the purpose of pre-
venting accidental breakage substantially as and for the-purpose herein set forth
and shewn upon the drawings.
Dated this 17th day of May 1892.
-
GEORGE. CLEGG KENYON
42, Market Street, Hindley.