Improvements in Pivots for Cycle Chains and the like.
Year: 1898

page_text: Date of Application, 17th Nov., 1898
Cantata Inanification Loft 18th Aus 1800 Accented 17th Nov.
1800
Date of Application, 17th Nov., 1898
Complete Specification Loft 16th Aug 1800 Accepted 17th Nov 1800
Improvements in Pivots for Cycle Chains and the like.
I, ARTHUR WILFRED BREWTNALL, of 10, Warwick Avenue, Didsbury, in the
County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
My object is to form a pivot or pin for connecting the links of a cycle chain
or the like, which shall be capable of being readily removed if necessary.
I accomplish this by forming the pivot or pin in two parts, one being a short
tube, with suitable flanged head, and the other a short rod, with suitable head,
slotted, or cut, down part of its length and otherwise formed so as to be capable
of a certain spring expansion and contraction.
In use, the tube is passed in from one side of the chain and the rod then inserted
in the tube from the other side, the spring given by the slot holding it firmly
in its place, which may in some cases be assisted by a suitable enlargement at
the other end of the tube.
I may also suitably form the flange of the tube or rod so as to fit into a suit-
able recess in the chain link and so prevent its separate rotation and consequent
excessive wear.
COMPLETE SPECIFICATION.
Improvements in Pivots for Cycle Chains and the like.
I, ARTHUR WILFRED BREWTNALL, of 10, Warwick Avenue, Didsbury, Man-
chester, in the County of Lancaster Engineer, do hereby declare the nature of this
invention and in what maner the same is to be performed, to be particularly
described and ascertained in and by the following statement:—
My object is to form a pivot or pin for connecting the links of a cycle chain
or the like, which shall be capable of being readily removed if necessary.
I accomplish this by forming the pivot pin in two parts, one being a short
tube, with suitable flanged head, and the other a short rod, with suitable head,
slotted, or cut, down part of its length and otherwise formed so as to be capable
of a certain spring expansion and contraction.
In use the tube is passed in from one side of the chain and the rod then inserted
into the tube from the other side, the spring given by the slot holding it firmly

page_text: in its place, which may in some cases be assisted by a suitable enlargement at
the other end of the tube.
I also suitably form the flange or end of the tube or rod, so as to fit into a
suitable recess in the chain link and so prevent its separate rotation and consequent
excessive wear.
Referring to the drawings sent herewith:
-
Fig. 1 shows a side view of the slotted pin and Fig. 2 a section of the short
tube of my improved pivot, Figs. 3 and 4 show two plan views of two portions
of cycle chains (partly in section) one with outside and one with inside links,
showing my improved pivot inserted, a indicating the pin with slot b which is
inserted into short tube o the separate rotation of which is prevented by inden-
tation d.
0
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is:-
1st. In pivots for cycle chains, the combination of a short tube with a slotted
pin, substantially as described and shown herein before and in the accompanying
drawings.
1
11
1000
P1000
JOHN HENRY TOPHAM,
7, South Corridor, Royal Exchange, Manchester, Agent to Applicant.
JOHN HENRY TOPHAM,
7, South Corridor, Royal Exchange, Manchester, Agent to Applicant.