An Improved Chain applicable for Securing Cycles against Theft and for other purposes.
Year: 1897

page_text: Date of Application, 6th Nov., 1897
Complete Specification Left, 5th Aug., 1898-Accepted, 1st Oct., 1898
TRUVIDIONAL
DIECIFICATION.
An Improved Chain applicable for Securing Cycles against Theft
and for other purposes.
I, HEINRICH FRIEDRICH Loos, of 3, Petzoldstrasse, Nuremberg, in the Empire of
Germany, Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object a chain capable of being closed, which is more
particularly designed for fixing cycle wheels as a means of protection against thieves.
The especial novelty consists in the means for fastening the ends of this chain
together when closed in such a way that the place of juncture is not observable, so
that the fastening can only be undone by an initiated person, that is to say the
owner of the cycle.
The chain is an endless one composed of flat links which are flexibly connected
with one another by means of rivets. One end of the chain is formed of two side
links, the other end by a central link adapted to fit between the other two side links.
This central link is provided with a short pin, whilst one of the side links is formed
with a hole into which the said pin or stud is inserted with the object of closing the
chain. The other side link has on its outer side a projection having the form of a
rivet head, and after the pin of the central link has been engaged in the hole in the
one side link the said other side link is folded down in the plane of the other links.
As therefore on one side of the point of connection there only appears the upper end
of the pin which resembles a rivet head and on the other side of the connection a
blind rivet end, the point of connection differs in no way in appearance from the
other links and is therefore not apparent to the non-initiated.
In order to make it recognizable by the proprietor without difficulty any suitable
inconspicuous mark may be attached, or the various links may be numbered, so that
the proprietor only needs to remember the number on the link.
In order that the fastening may not be discovered and unfastened by an
unauthorized person by testing each separate link, the following arrangement is
adopted. The central link is formed with a narrow groove or recess and one of the
side links at the other end of the chain is provided on its inner side with a short
pin or stud adapted to fit into said groove but only at a certain given mutual
position of the two links. It is therefore necessary to know the arrangement and
mode of working of this fastener before the end links can be fastened together or
separated.
Dated this 5th day of Navamhan 1007

page_text: An Improved Chain applicable for Securing Cycles against Theft,
and for other purposes.
I, HEINRICH FRIEDRICH LOOS, of 3, Petzoldstrasse, Nuremberg, in the Empire
of Germany, 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 :-
This invention has for its object a chain capable of being closed, which is more
particularly designed for fixing cycle wheels as a means of protection against thieves.
The especial novelty consists in the means for fastening the ends of this chain
together when closed in such a way that the place of juncture is not observable, so
that the fastening can only be undone by an initiated person, that is to say the owner
of the cycle.
The invention is shown in the accompanying drawings in which,
Figure 1 is an elevation of the chain when unfastened.
Figure 2 a view of the method of putting the fastening together.
Figure 3 an elevation of the chain closed, and
Figure 4 a detail view of the fastening device.
The chain is an endless one composed of flat links which are flexibly connected with
one another by means of rivets. One end of the chain is formed of two side links b b',
the other end by a central link a adapted to fit between the other two side
links bb. This central link a is provided with a short pin c, whilst one of the side
links b is formed with a hole d into which the said pin or stud is inserted with the
object of closing the chain. The other side link 6' has on its outer side a projection
having the form of a rivet head, and after the pin c of the central link has been
engaged in the hole in the one side link the said other side link is folded down into
the plane of the other links a b. As therefore on one side of the point of connec-
tion there only appears the upper end of the pin c which resembles a rivet head
and on the other side of the connection a blind rivet end 1, the point of connection
differs in no way in appearance from the other links and is therefore not apparent
to the non-initiated.
In order to make it recognizable by the proprietor without difficulty any
suitable inconspicuous mark may be attached, or the various links may be numbered,
so that the proprietor only needs to remember the number on the links b or b¹.
In order that the fastening may not be discovered and unfastened by an
unauthorized person by testing each separate link, the following arrangement is
adopted. The central link a is formed with a narrow groove or recess f and one
of the side links 61 at the other end of the chain is provided on its inner side
with a short pin g or stud adapted to fit into said groove but only at a certain given
mutual position of the two links a b¹. It is therefore necessary to know the
arrangement and mode of working of this fastener before the end links can be
fastened together or separated.
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. A chain for securing cycles and the like against theft and for other purposes,
one of the end links (a) of which has a stud (c) and the other link a hole (d) which
when the two ends are engaged form a joint, not perceptible from the outside,
substantially as herein before described and shown in the accompanying drawings.

page_text: 2. A means of fastening chains for securing cycles and the like, consisting of a
projection (g) of one link (6) and a slot (f) in another link (a) engaging one
another in a given mutual position of the two links, substantially as hereinbefore
described and shown in the accompanying drawings.
Dated this 4th day of August 1898.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool, Agents for the Applicant.