Improvements in Locking Apparatus for the Chains of Bicycles and the like.
Year: 1893

page_text: Date of Application, 19th Sept., 1893-Accepted, 28th Oct., 1893
COMPLETE SPECIFICATION.
[Communicated from abroad by WILLIAM HENRY HART, Jr., No. 242, Chestnut
Street, Philadelphia, Pennsylvania, United States of America, Merchant and
Manufacturer.]
Improvements in Locking Apparatus for the Chains of Bicycles
and the like.
I, WILLIAM ROBERT LAKE, of the Firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, 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:-
My invention consists of a lock for the chain of a bicycle or the like, the same
being formed of a shank provided with a neck, and a lock having a bolt engaging
said neck, as will be hereinafter set forth.
In the accompanying drawing,.
Figure 1 represents a perspective view of a chain lock embodying my
invention.
Figure 2 represents a side elevation thereof, the parts being shown separated.
Similar letters of reference indicate corresponding parts in the two figures.
A represents a shank formed of a rod, tube or other piece of suitable metal or
material, on the upper end of which is a head B, which may be cast therewith or
otherwise firmly secured thereto.
On the shank, near the lower end thereof is a peripheral groove forming a neck C,
the said end being adapted to enter the casing of a lock D, whose bolt engages
with said neck, thus holding the lock connected with the shank.
I do not limit myself to the construction of the lock, as I may use any form
thereof having a bolt adapted to engage the neck of the shank.
The operation is as follows:
The lock is opened by a suitable key, which is inserted in the casing so as to
disengage the end of the bolt thereof from the shank. The lock is then removed
and the shank passed through the links of the chain to be secured, and the lock
applied to the shank, so that the neck C is within the casing thereof. The bolt is
now caused to enter the neck, so as to engage therewith, it being evident that as
the head B and lock D are of greater width or length than that of the links of the
chain through which the shank passes, the said chain is controlled and travel of
the same prevented.
Should the lock D be turned in order to twist or wrench the same from the
shank C, the said lock will rotate owing to the free projection of the lock bolt
into the groove which forms the said neck, thus preventing said improper action.
When the key of the lock is inserted and turned, the lock may be opened and
the same then slipped off of the shank, and the latter withdrawn from the chain,
leaving the said chain uncontrolled and free to move.
If desired, the head B may be substituted by a lock, in which case the shank A
may have a neck in its upper end, but whether a lock is at either end, it receives
the end of the shank within the casing thereof, thus inclosing and concealing the
same, and preventing access thereto from the outside of said casing.
Having now particularly described and ascertained the nature of the said inveu-
tion, and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is :-
1st. A chain lock consisting of a shank, a head and a lock, said head and lock
being at opposite ends of said shank, the portion of the shank which is within the

page_text: lock being inclosed by and concealed by the casing thereof, substantially as
described.
.
2nd. A chain lock having a headed shank provided with a neck, and a removable
lock on the neck end of the shank having a bolt adapted to engage in the groove
forming the said neck, the said parts being combined substantially as described.
3rd. A chain lock consisting of a shank adapted to be passed through the
opposite links of a chain, a head on one end of said shank wider than the openings
in the link, a neck in the other end of the shank, and a lock proper wider than
the openings in the link, having a bolt adapted to engage said neck, the said
lock being rotatable on said shank, the said parts being combined substantially as
described.
Dated this 19th day of September 1893.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.