An Improved Shackle or Connecting Link.
Year: 1894

page_text: Date of Application, 13th Apr., 1894
Complete Specification Left, 14th Jan., 1895-Accepted, 9th Mar., 1895
PROVISIONAL SPECIFICATION.
An Improved Shackle or Connecting Link.
I, GUSTAVE MARTINET, of 5 Rue Pépinet Lausanne in the Republic of
Switzerland, Professor do hereby declare the nature of this invention to be as
follows:-
This invention consists of an improved shackle cr connecting link which may be
used for a great many purposes as for instance for connecting two chains with each
other or a chain with a fix ring or for any other similar purpose.
The said link is adapted to be made of any dimensions whatever and may be
used for watch-chains as well as for the biggest steel or iron chains.
The improved shackle is composed of two pieces formed substantially like the
letter S, applied upon and connected to one another by means of a bolt or rivet
so as to be in any position, symmetrical to one another and so as to substantially
form the figure 8 when placed at a suitable angle with each other.
One of these pieces is provided with a lateral projection against which abuts the
other piece, when the shackle or connecting link is shut or when an attempt is
made to open the same in the wrong direction.
On the other hand if an attempt is made to open the same in the opposite
direction, the rings of the chains which are to be connected with one another,
prevent it absolutely.
The opening of the shackle or connecting link can therefore only take place by
sliding or springing the one piece over the projection on the other piece and the
bolt or rivet is so disposed as to allow this sliding to be effected with some slight
effort.
The projection may be replaced by a spring or by any other suitable clasping-
device, as for instance by suitable notches and enlargements stamped in the
aforesaid pieces.
The pieces are preferably of half round section but they may be made of any
other section according to the different purposes for which they are to be used.
One of the pieces may have one of its branches curved or prolonged so as to
embrace one of the links of the chain or the like to be connected, this being in
some cases desirable.
Dated this 13th day of April 1894.
An Improved Shackle or Connecting Link.
I, GUSTAVE MARTINET, of 5 Rue Pépinet, Lausanne, Switzerland, Professor,
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:-
This invention consists of an improved shackle or connecting link which may be

page_text: used for a great many purposes as for instauce for connecting two chains with each
other or a chain with a fix ring or for any other similar purpose.
The said link may be made of any suitable dimensions and may be used for
watch-chains as well as for the largest steel or iron chains.
In the accompanying drawing,
Figure 1 is a face view of the improved link shown in its open position and
ready to connect with the ends of two chains.
Figure 2 is a face view of the said shackle when closed.
Figure 3 is a side-view of the same.
Figure 4 is a face-view of the said shackle during the operation of opening the
same for disconnecting the chains from one another.
Figure 5 is a side-view of the shackle shown in Figure 4.
Figures 6 and 7 show a modified form of catch or fastening for the link and
Figure 8 is a modified form of the said connecting link.
Similar letters of reference indicate corresponding parts in all the figures of the
drawing.
The improved shackle is composed of two, pieces C and D formed substantially
like the letter S, applied upon and connected to one another by means of a bolt or
rivet E so as to be symmetrical to one another in any position as will be seen from
Figures 1, 2 and 4, and so as to substantially form the figure 8 when arranged as
shown in Figure 2.
One of these pieces, for instance C, is provided with a lateral projection c
against which abuts the other piece D, when the shackle- or connecting link is
shut as shown in Figure 2 or when an attempt is made to open the same in the
wrong direction, as shown by the arrow 1.
On the other hand if an attempt is made to open the same in the opposite
direction indicated by the arrows 2, the rings A and B of the chaius which are to
be connected with one another, will prevent this movement.
The opening of the shackle or connecting link can therefore only take place by
springing the piece D over the projection c of the piece-C and the bolt or rivet É
is so disposed as to allow this sliding to be effected with a slight effort as shown in
the Figures 4 and 5.
The projection e may be replaced by a spring or by any other suitable clasping-
device as, for instance by suitable notches and enlargements stamped in the
aforesaid pieces C and D, as shown in Figures 6 and 7.
The pieces C and D are preferably of half round section as shown in the
drawing but they may be made of any other section according to the different
purposes for which they are to be used.
One of the pieces C or D may have one of its branches curved or prolonged so
as to embrace one of the links of the chain or the like to be connected for instance
as shown in Figure 8 this being in some cases desirable.
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 -
1st. An improved shackle or connecting link, composed of two pieces substan-
tially formed like the letter S applied against and connected to one another by
means of a bolt, rivet or the like acting as a pivot, so as to ensure the two pieces
being always symmetrical to one another and adapted to be placed close to one
another so as to substantially form the figure 8 for the purpose specified.
2nd. The combination of the improved shackle or connecting link as claimed in
the first claim with any suitable clasping-device for preventing the self-opening of
the said buckle or link.
3rd. An improved shackle or connecting link substantially composed of a piece C
of any suitable section, provided with a lateral projection c, and of a piece D, of
any suitable section, with a bolt or rivet E connecting the said pieces C and D with
one another, substantially as and for the purpose specified.

page_text: 4th. An improved shackle or connecting link substantially composed of two
S-shaped pieces C and D with a bolt or rivet E having suitable notches and
enlargements stamped or formed in the said pieces C and D substantially as shown
in the Figures 6 and 7 of the drawing.
5th. An improved shackle or connecting link substantially composed of two
S-shaped pieces C and D with a bolt or rivet E having one of the branches of gone
of the said pieces C or D curved or prolonged with the object of embracingtone
of the links A or B of the chain, substantially as shown in Figure 8.
Dated this 14th day of January 1895.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.