Year: 1899

page_text: I, Philipp HoevEL, of 118, Aachenerstrasse, Pallien-bei-Trier, in the Empire
of Germany, Inventor, do hereby declare the nature of this invention to be as
follows:-
The present invention has for its subject a transmission chain and its object
is to reduce to a minimum the stretching of these chains during use.
For this purpose the chain is provided with joints of a combined or compound.
type mounted concentrically the one relatively to the other.
This chain is composed of internal links each provided with two articulating
sockets; intermediate links each provided with articulating sockets, each of the
latter sockets being fitted into the sockets of the internal links; and external
links possessing spindles or pins introduced into the sockets of the intermediate
links.
This arrangement forms a double or compound articulation between the internal
and the intermediate links, and between the intermediate and the external links.
Dated this 6th day of May 1899.
J. P. BAYLY,
18, Fulham Place, London, W.,
Agent for the Applicant.
I, PHILIPP HOEVEL, of 118, Aachenerstrasse, Pallien-bei-Trier, Germany,
Inventor, 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 present invention relates to transmission chains, the object being to provide
a combined articulation chain and to reduce the lengthening of the transmission
chains to a minimum, and it consists in the features of construction and com-
bination of parts fully described hereinafter and specifically pointed out in the
appended claims.
And in order that this my invention may be the more readily understood and
carried into effect or practice, reference is hereby made to the accompanying
drawing in which :-
:-
Fig. 1. Shows a transmission chain having double articulations and in which
the sprockets of the corresponding wheel engage one. articulation.

page_text: Fig. 2. Shows a similar chain in which the sprockets of the corresponding
wheel engage two articulations.
The improved transmission chain is composed of inner links c, provided with
sockets c¹, central links provided with sockets a', and outer links provided
with pins b¹.
The links a are connected by means of said links as well as by means of the
links
the pins b passing through the sockets a which in turn pass through the
sockets c¹. This arrangement results in a double articulation between said
links a, b, and a, c.
The combination of the articulations may be further increased by the conjunc-
tion of socket-links passing through the sockets of the other links; thus I may
obtain triple, quadruple etc., articulations.
In the usually employed chains the traction is supported by the pin and the
eyes of the link alone, which therefore is soon worn out, whereby the chain will
be lengthened. In my improved chain, said traction is distributed to the various
parts of each articulation, whereby the chain is effectively prevented from being
lengthened in operation.
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:-
The improved transmission chain, composed of double articulations, the parts
of which are concentrically mounted into each other, substantially as and for
the purpose set forth.
J. P. BAYLY,
18, Fulham Place, London, W.,.
Agent for the Applicant.