Improvements in Cases for Watches, Pedometers, and other Pocket Instruments, also Applicable to Time-pieces and other Instruments requiring such like Cases.
Year: 1888

page_text: Date of Application, 21st Dec., 1888
Complete Specification Left, 21st Sept., 1889-Accepted, 30th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Cases for Watches, Pedometers, and other Pocket
Instruments, also Applicable to Time-pieces and other Instruments
requiring such like Cases.
1 JOSEPH WILKINSON of 57 Smallbrook Street Birmingham in the County of
Warwick Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention has reference to what are generally described as watch cases but may
be applied to the case or covering of any article capable of being covered by a similar
description of case to a watch or time piece.
The object of the invention is to simplify the manufacture of the case at the same
time producing a dust and damp proof case.
In carrying out iny improvement I dispense with the hinges or joints both for the
covers and bezels and instead of turning them of a true circular form I make them
slightly oval so that when the parts are placed together a slight turn will cause them
to become locked.
Or I make them with one or more portions of the edge of the covers made
eccentric to the circumference. These eccentric parts have their counterpart in the
centre-ring or body of the case.
By placing the covers in position on the centre-ring or body and turning them
round a portion of a revolution they are drawn tightly together.
The case may also be made without the usual centre-ring or body by making the
covers or bezels oval, the one side being made to take the place of the centre-ring
and receive the other, or one may be made with the eccentrics upon its edge and the
other the counter part to receive it,
Dated this 20th day of December 1888.
PAYNE & TALBOT,
7, Cherry Street, Birmingham, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Cases for Watches, Pedometers, and other Pocket
Instruments, also Applicable to Time-pieces and other Instruments
requiring such like Cases.
JOSEPH WILKINSON of 57 Smallbrook Street Birmingham in the County of
Warwick Engineer 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, referrence being had to the accompanying drawings and to the
letters and figures marked thereon:-
My invention has particular referrence to what are generally described as watch
cases but it may be applied to the case or covering of any article capable of being
covered by a similar description of case to a watch or time piece.
The object of the invention is to simplify the manufacture of such cases at the same
time producing them of a dust and damp proof construction.
In carrying out my improvements I dispense with the hinges or joints both for the
covers and the bezels and instead of turning them and the centre ring or body of a true
circular form I make them slightly oval in form, so that when the parts are placed
together a slight turn will cause them to become locked. Or I can make one or more
These
portions of the edge of the covers or bezels eccentric to the circumference.
eccentric parts have their counterpart in the centre ring or body of the case so that

page_text: by placing the covers in position on the centre ring or body and turning them round
portion of a revolution they are drawn tightly together.
a
The cases may also be made without the usual centre ring or body by making the
covers or bezels oyal the one side being made to take the place of the centre ring and
receive the other, or one side may be made with the eccentrics upon its edge and the
other the counter part to receive it.
Refering to the drawings which are enlarged views of the several parts described :-
Fig. 1. is a plan of a centre ring, body, or case.
Fig. 2 is a plan of a cover or a bezel.
Fig. 3 is a plan illustrating a bezel with the eccentric arrangement.
Figs. 4 & 5 are sections (shown double the size of the plans) shewing in two forms
the undercut portions locked together upon a centre ring.
The ring (a) Fig. 1 being made slightly oval that is to say wider at its diameter
from a to than from y to y and the inside ring (b) Fig. 2 being made similarly
wider from to a than from y to y when the lid Fig. 2 is placed over the body Fig. 1
so that the ring (b) Fig. 2 shown in section Fig. 4 falls into the undercut portion,
shown in dotted line Fig. 1 and at (c) Fig. 4, slightly turning the lid Fig. 2 will
cause the ring (b) to become wedged into the undercut portion (c) by reason of the
oval shape of the rings. In Fig. 3 instead of using the oval shape as before described
the eccentric parts (d d d) are upon the edge of the cover or bezel and corresponding
or counterpart parts would be upon the case or body so that when placed together as
slight turn will cause the projecting eccentric ring of the one part to become
wedged into the undercut eccentric sinking of the other part and so draw the
parts tightly together.
Fig. 5 is a section to illustrate that I can reverse the locking portions by placing the
locking ring (e) upon the cover or bezel and the undercut sinking (f) upon the body
or centre ring.
In my illustration Fig. 3 I have shown three eccentrics but I do not confine myself
to this, or any other, convenient number.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what ]
claim is :-
The construction of Damp and Dust proof cases for watches, pedometers, and other
instruments requiring such like cases with their locking or attaching portions of an
oval, or an eccentric, form whereby the lids or covers can be attached, all substantially
as herein set forth and specified.
Dated this 20th day of Sontember 1880
HENRY F. TALBOT,
7, Cherry Street, Birmingham, Agent for the Applicant.