Improvements in Bracelets.
Year: 1890

page_text: Date of Application, 17th June, 1890
Complete Specification Left, 13th Mar., 1891-Accepted, 18th Apr., 1891
TRUVIDIONAL SUITICATION.
Improvements in Bracelets.
I, CARL BACHEм, of Pforzheim, in the Grand Duchy of Baden, in the German
Empire, Jeweller, do hereby declare the nature of this invention to be as
follows:-
The object of my invention is to provide bracelets with a solid shutting mechanism
of most simple construction and having no parts jutting out from the surface of the
bracelet.
For this purpose
I divide the annular bracelets into two parts, and, connecting
the ends on the one side of the semi-circular parts by a joint allowing the two
branches to be laterally moved one against the other, provide the other ends
respectively with a hole and with a projection lying within the body of the bracelet
when closed.
In order to make my invention more clear, I refer to the accompanying
drawing, in which similar letters denote similar parts throughout the different
figures:
Figs. 1, 2 and 5 are front-views of the bracelet in different positions.
Fig. 4 is a plan-view of the bracelet.
Figs. 3 & 6 represent details of the bracelet.
At a a the parts b and c having an almost semi-circular shape, are connected one
with the other by a joint, which is formed as shown in Figs. 3 & 4; a a are thin
plates of any metal-even gold may be employed-which on being soldered to the
ends of the hollow bracelet-parts have a diameter taller than that of the bracelet
itself, (Fig. 3). These plates aa as well as the small steel-sheets e e are provided
with central holes serving as seat for the rivet f. The plates a a are soldered to
the branches and not before the four-plates are riveted about each other,
and the projecting rims of the plates aa are filed away when the act of soldering is
done (Fig. 4). On this way there is gotten a joint which, though allowing the
branches to be easily moved one against the other in lateral direction, is
almost quite invisible and of great durability.
The ends opposite to the joint just described are sloped and covered by oblique
plates s s one of which (s) being slitted and the other (s) having a nose n. When
the opened bracelet (dotted position of Fig. 2) is to be shut, the branches bande
are moved against each other and the upper rim of nose n is pushed against the
under part of plate s. Now the branches and c will act as springs in such a
manner that they withdraw a little thus allowing nosen to slide upwards about
the oblique plates and then to enter the slit of this plate. The bracelet is thus
firmly shut, the nose n being held within the slit of plates by the elastic power of
the bracelet itself. The upper rim of nose n is also sloped, this will however be
unnecessary when the platess and are sufficiently inclined to the axis of the
bracelet-body. On the other side the plates ss may be vertically arranged on
providing nose n with an upper rim of increased inclination.
In order to allow opening of the bracelet without drawing the branches and c to
the left and to the right respectively, the under rim of nose n is likewise curved in
such a manner that the nose will leave the slit of plates and slide downward
about this plate when the branches b and c are turned from another by means of
joint a a.
Dated this 14th day of June 1890.

page_text: COMPLETE SPECIFICATION.
Improvements in Bracelets.
I, CARL BACHEM, of Pforzheim, in the Grand Duchy of Baden, in the German
Empire, Jeweller, 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 object of my invention is to give unto bracelets perfectly flush surfaces by
providing the same with locking-devices of such a construction, that every detail
thereof lies within the outer surface, and no corner or pin or any part at all
projects out.
obtain this object by making the bracelet in two halves, which are jointed on
one side in such a manner, that they allow an axial turning, while the joint-line
itself is scarcely visible, and on the other side the two ends are provided with slots
and nozzles snapping into each other in such a manner, that also here no more than
the well fitting butting-line be visible.
In order to make my invention more clear, I refer to the drawing (sheet 1) sent
in with Provisional Specification and also to the sheet 2 accompanying this Specifi-
cation in which similar letters denote similar parts throughout the different views,
and in which :-
Figs. 1, 2 and 5 are elevations of the bracelet,
Fig. 4 is a plan and
Figs. 3 and 6 are details of the same.
Fig. 7 on Sheet 2 is a plan of a bracelet, provided with a locking-device herein-
after more fully described.
Figs. 8-16 are details of locking-devices.
band care the two semi-circular halves of my improved bracelet. The details
of the joint may be seen in Fig. 3, wherein a a are thin plates preferably made of
the same material as the bracelet itself and are, when connected to the same, of a
somewhat larger size than the section of the bracelet. Previously to be attached,
the two plates a a are pinned together by a small rivet t, which for sake of
strengthening the plates aa is provided with washers e one under each head. The
plates are riveted, loose enough to allow a turning of the same against each other,
and then they are soldered on to the two halves of the bracelet in the manner shown
in Fig. 3, and hereafter the edges projecting out from the surface of the bracelet are
filed off. Thus a fine and neat joint is attained allowing a twisting of the two
circular halves against each other, while at the same time the surfaces of both
halves run into each other evenly without any offset or corner.
11
The other ends are bevelled, so that a twist of the bracelet only to one side
permits the opening of the same as will be understood from Figs. 1, 2, 5 & 6, and
are closed up by plates s and s', of which is provided with a nozzle n and s with
a slot allowing the entrance of n. This flat nozzle standing at right angles to st,
is somewhat rounded off or slanted on the upper and lower sides, and the slot being
inade just the length as the nozzle a, a little force will be required to open or shut
the bracelet, as will be best comprehended by a glance at Fig. 1. In an open state
the ends of the two halves overlap slightly and by snapping the nozzle into the slot
the bracelet will in itself act as a spring, thus also elastically keeping the two ends
closely upon each other, and having made the two plates s and to fit truly upon
another the joint-line will also here scarcely be visible. In order to enhance the
smoothness and evenness of the complete bracelet and even to give it the appearance
of being made of one piece, the polishing of the same may be done not until it is
thus finished. A slight strain however will be exerted on the rivet t by this
arrangement and I therefore prefer to have the plates attached vertically, that
is to say, exactly at right angles to the bracelet, thus allowing the surfaces of s s
and a a all to lay in one plane. In this case I prefer to have the nozzle arranged
parallel to this surface and not as described above at right angles. On Sheet 2,
S

page_text: there are several views showing two modes of arriving at this effect. Either the
nozzle n¹ may have, as will be seen in Fig. 12, a slanting edge h, which has to force
its way against the edge of the counter-nozzle v shown in Fig. 10 and then snap
behind and hold each other by their back edges ii, or the nozzle n² may be
rounded off as in Fig. 16 and have to snap into a correspondingly shaped notch t¹.
A pulling asunder of the two parts b and c in the direction indicated by the
arrows, is prevented by the plates y and k, hooking into each other, thus
completely avoiding a bending strain of the rivet t to be exerted, while opening or
closing the clasp. The opening therefore is done by holding the semi-circular
part e between the fingers and pressing the ends a little nearer together as indicated
by the arrows pp, thus releasing the nozzle n' or n² out of its slot and then the end
whereon the nozzle is attached is pulled sideways by giving the bracelet a twist.
Only a very unskilful disengaging of the nozzle, may impart unto the rivet a strain,
when instead of pressing only e together both halves as well as c are pressed.
But this merely being a shearing-strain will be perfectly harmless. The arrange-
ment illustrated in Figs. 13-16 will allow a disengaging of the lock by twisting
the bracelet to either side.
C
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 I
claim is :-
1. In a bracelet: A turnable joint consisting of two plates (a a), riveted together
by a rivet (t) and two washers (e e), and combining the same to the bracelet by
soldering each half of a bracelet unto one plate after both being riveted together,
for the purpose set forth.
2. In a bracelet: A locking device consisting of two plates (s s¹) one of which
carrying a nozzle and the other a corresponding slot, which plates are soldered on
to the bracelet-halves, for the purpose set forth.
3. A bracelet made in two halves connected by a joint, in combination with a
locking-device consisting of nozzles firmly attached to the ends of the bracelet-
halves, which are closed by means of the elasticity of one bracelet-half, as
described.
4. A bracelet made in two halves connected by a twisting-joint in combination
with a locking-device consisting of nozzles firmly attached to the ends of the
bracelet-halves, which are closed by means of the elasticity of one bracelet-half, as
described.
Dated this 12th day of March 1901
CARL BACHEM.
By Rayner & Cassell,
37, Chancery Lane, London, W.C., Agents for the Applicant.