IMPROVEMENTS IN CHAINS FOR TRANSMITTING MOTIVE POWER APPLICABLE CHIEFLY TO VELOCIPEDES, AND OTHER MECHANICAL PURPOSES
Year: 1885

page_text: We GEORGE THORNTON of Phoenix Works, Aston, Edge tool maker, and JAMES
BRITTAIN of 3 Aston Street, Machinist, and both of Birmingham in the County of
Warwick do hereby declare the nature of our Invention for "IMPROVEMENTS IN
CHAINS FOR TRANSMITTING MOTIVE POWER APPLICABLE CHIEFLY TO VELOCIPEDES,
AND OTHER MECHANICAL PURPOSES," to be as follows:-
A chain constructed according to my invention consists of a series of open
rectangular links, hereafter called frame links, connected, each to the next by links
consisting of flat pieces of metal closed over the adjacent parts of the frame links,
the closed over part only fitting loosely and permitting the requisite freedom of
movement,
Each rectangular link is in the shape of an open frame, the sides of this frame
are approximately rectangular in cross section, and the ends of it are circular in
cross section. It is to be understood that the parts called sides are parallel to the
centre line of the chain, and the parts called ends are at right angles to it. Each
of the above described links is in one piece of metal formed by stamping, casting,
or other appropriate means. When two of the above described links are laid
together with their ends nearly touching, the intermediate link is attached to them. -
This link consists of a flat piece of metal of a width nearly that of the inside of
the open frame link. The ends of this flat piece are then closed over the round
ends of the frame links by means of suitable tools which in closing the link pinch
it in on the opposite sides so that it nearly resembles the figure 8, in each of the
circular openings the circular end of the frame link works freely and allows of the
requisite flexibility of the chain.
:

page_text: Improvements in
Chains for Transmitting Motive Power,
Applicable Chiefly to Velocipedes and other Mechanical
Purposes.
We GEORGE THORNTON of Phoenix Works, Aston Edge tool Maker, and JAMES
BRITTAIN, of 3 Aston Street Machinist and both of Birmingham in the County of
Warwick, do hereby declare the nature of our said invention and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement:-
A chain constructed according to our Invention consists of a series of open
rectangular links, hereafter called frame links, connected, each to the next by links
consisting of flat pieces of metal closed over the adjacent parts of the frame links,
the closed over part only fitting loosely and permitting the requisite freedom of
movement.
Each rectangular link is in the shape of an open frame, the sides of this frame
are approximately rectangular in cross section, and the ends of it are circular in
cross section, It is to be understood that the parts called sides are parallel to the
centre line of the chain and the parts called ends are at right angles to it. Each
of the above described links is in one piece of metal formed by stamping, casting
or other appropriate means. When two of the above described links, are laid
together with their ends nearly touching, the intermediate link is attached to them.
This link consists of a flat piece of metal of a width nearly that of the inside of
the open frame link. The ends of this flat piece are then closed over the round
ends of the frame links by means of suitable tools which in closing the link pinch
it in on the opposite sides so that it nearly resembles the figure 8, in each of the
circular openings the circular end of the frame link works freely and allows of the
requisite flexibility of the chain.
And in order that this our said Invention may be more thoroughly understood
we have prepared the accompanying sheet of drawings, by the aid of which we will
proceed more particularly to describe it. Similar letters of reference denote similar
parts in each figure where they occur.
Fig. 1 is a side elevation of chain.
Fig. 2 is a plan view of same.
Fig. 3 is a sectional view, side elevation, plan and end view of open link.
Fig. 4 is a side view elevation, sectional plan, and end view of closed link,
Fig. 5, a side view of 1st modification.
Fig. 6 a plan view.
Fig. 7 a plan view of open link detached.
a is the open rectangular frame link, in Figs. 1-2-3 formed from one piece of
1
11
1
..
1
T

page_text: This chain is applicable to Velocipedes, lawn mowers, hoisting machinery and
such mechanical purposes where a pitch chain may be required; we do not confine
ourselves to the precise details herein given and set forth, and shewn on the
accompanying sheet of drawings, but that we hold ourselves at liberty to alter
or modify the same without departing essentially from the principle of this our
said Invention we do not claim the construction of parts taken separately from
each other.
Having now particularly described and ascertained the nature of our said
Invention and in what manner the same is to be performed we declare that what
we claim is:-
1st The construction of a chain with rectangular links a and coupling or inter-
mediate links b, as hereinbefore described and illustrated in Figs. 1, 2, 3, 4.
2nd The construction of a chain with links a, and coupling links b, as herein-
before described and illustrated in Figs. 5-6-7.
"
3rd The general arrangement and combination of parts the whole forming
Improvements in chain for transmitting motive power applicable chiefly to
Velocipedes and other mechanical purposes.'
THOMAS KENDRICK,
Agent for Applicants.