Improvements in Self-closing Bracelets, Napkin and other Rings.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Self-closing Bracelets, Napkin and other Rings.
I, ERNEST JEANNERET, of Chaux-De-Fonds, Switzerland, Manufacturer, do
hereby declare the nature of this invention to be as follows:-
in
ends
of the
The invention relates to an improved construction of that class of self-closing
bracelets, napkin and other rings, which is based on the principle of the "Nurem-
berg-scissors," in which always two levers or bars are laid crossway one upon the
other and are pivoted together their middle, the
said levers or bars being pivoted to the ends of an adjacent pair of
crossed levers or bars. A series of such crosses or crossed levers or bars are com-
bined so as to form a bracelet or ring of circular or elliptical form and springs are
provided formed of suitable wires having their ends connected to the pivots which
connect the ends of two adjacent links with one another and are coiled around the
central pivot of the corresponding pair of links so as to cause the cross formed by
such pair of links to be normally closed.
The so constructed self-closing bracelet or ring may be combined or not with a
watch or medallion of any form or dimensions or kind whatever, inserted between
two adjacent crosses formed as specified above, and the form, shape and configura-
tion of the levers or bars forming the said crosses may be of any kind whatever
in view of producing a pleasant or decorative effect.
Dated this 21st day of September 1898.
CARPMAEL & CO.,
Agents for the Applicant.
Improvements in Self-closing Bracelets, Napkin and other Rings.
I, ERNEST JEANNERET, of Chaux-De-Fonds, Switzerland, Manufacturer, 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 invention relates to an improved construction of that class of self-closing
bracelets, napkin and other rings which is based on the principle of the Nurem-
berg-scissors, in which always two levers or bars are laid crossway one upon the
other and are pivotted together in their middle the ends of said levers or bars
being pivotted to the ends of an adjacent pair of crossed levers or bars.
D
A series

page_text: of such crossses or crossed levers or bars being bent so as to form a bracelet or ring
of circular or elliptical form which, according to the movable condition of all the
joints of the crossed levers or bars, form an elastic ring which may be opened or
closed within certain limits.
The self-closing rings of that class which have been constructed hitherto, have
one or more of their crossed levers or bars provided with a spiral spring acting
upon the same so as to draw the said levers or bars together and this is also the
purpose of the present invention but my construction realizing this purpose is
much stronger and the elasticity of the ring constructed according to my invention
is much greater than in the similar constructions hitherto made."
My invention consists of providing each cross or pair of crossed levers or bars,
with a spring formed of a wire (preferably of steel) having one of its ends fixed
to one of the pivots connecting the end of one of the levers or bars of the said
cross to the end of one of the levers or bars of the adjacent cross, the said spring
wire being then passed once or more around the central pivot of the said cross and
having its other end fixed to another of the pivots connecting the end of one of
the levers or bars of the same cross to the end of one of the levers or bars of the
adjacent cross, and the said spring wire being bent so as to cause the cross to
which it is so connected to be normally closed.
The invention is illustrated in the accompanying drawings in which Figure 1
shows a portion of a bracelet of my improved construction in its closed condition.
Figure 2 shows the same portion of bracelet in its extended condition.
Figure 3 shows separately the inner face, and
Figure 4 the outer face of one lever or bar of the bracelet shown in Figures 1
and 2 provided with its spring.
Figure 5 shows a portion of another bracelet constructed according to my
improved construction, in its closed condition.
Figure 6 shows the same portion of bracelet in its extended condition.
In all the figures the same signs refer to the same parts.
1 and 2 are the levers or bars forming the crosses of a Nuremberg-scissiors,
3 are the pivots connecting those levers or bars with one another; 4 and 5 are the
pivots connecting each of the crosses so formed with the adjacent cross.
In Figures 1 to 4 the said levers or bars 1 and 2 are combined with a spring 6
wound around the pivot 3 and having one of its ends fixed to the pivot 4 of the
lever 1 and its other end fixed to the pivot 4 of the lever or bar 2. The said
spring 6 is wound in such a manner as to normally cause the levers or bars 1
and 2 to assume the relative positions shown in Figure 1 and to thus retract
the bracelet after the same has been extended as shown in Figure 2.
In Figures 5 and 6 the said levers or bars 1 and 2 are combined with a spring 7
wound around the pivot 3 and having one of its ends connected to the pivot 4
of the lever 2 and its other end connected to the pivot 5 of the lever 1.
The self-closing bracelet or ring so constructed may be combined or not with
a watch or medallion of any form or dimensions or kind whatever, inserted
between two adjacent crosses formed as specified above and the form, shape and
configuration of the levers or bars forming the said crosses may be of any kind
whatever in view of producing a pleasant or decorative effect.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I am aware of the
Specification of Letters Patent granted to Hermann Drews, No. 5214 of 1887,
and I claim nothing described and claimed therein, but I declare that what I
claim is
An improved self-closing bracelet, napkin or other ring formed of any number
whatever of pairs of levers or bars crossing each other and connected with one
another in the manner of the so-called Nuremberg-scissors, each cross or pair
of crossed levers or hars being provided with a suitable spring having one of
its ends connected to one of the pivots connecting the end of one of the levers or

page_text: bars of the said cross to the end of one of the levers or bars of the adjacent cross,
the said spring being wound once or more around the central pivot of the said
cross and having its other end fixed to another of the pivots connecting the ends
of one of the levers or bars of the same cross to the end of one of the levers or
bars of the adjacent cross, substantially as and for the purpose specified.
•
Dated this 20th day of June 1899.
CARPMAEL & Co.,
Agents for the Applicant.