Improvements in Chain and other Links Connected by Pins.
Year: 1887

page_text: Date of Application, 23rd Nov., 1887
Complete Specification Left, 23rd Aug., 1888
Complete Specification Accepted, 28th Sept., 1888
DECEDVE
PROVISIONAL SPECIFICATION.
Improvements in Chain and other Links Connected by Pins.
We JOSEPH ELTON BOTT, of Levenshulme, Manchester, in the County of Lancaster,
Metallurgical Engineer, and CHARLES HAYES COUSINS, of 7 Broadgate Lincoln, in
the County of Lincoln, Engineer, do hereby declare the nature of this invention to
be as follows:-
In carrying out our Invention, and in order that each link composing the chain
may be detachable, we construct each link in the form of a fork, the bore of the boss
having a keyway placed at right angles to the keyways in the bore of the bosses
forming the ends of the forks, so that when the bore of the forked ends is placed
axially with the bore of Boss, the respective key ways are out of line in every position,
but at a right or other angle from the horizontal line.
In order to connect the forked links together we use a pin or rivet having a
central feather the length of the boss, and two cylindrical ends the width of the
forked bosses.
When it is required to construct or build up a chain on our principle, the links are
placed at the proper angle until the keyways in the Boss and forked ends coincide,
when the pin can be introduced, and on the links being turned to a horizontal
position the pin will be found to be secure between the two forked ends. The links
work on the journals formed by the cylindrical ends of the pins or rivets, thus forming
a chain, easily detachable when required, but when stretched in a working position,
absolutely prevented from falling out, or even being tampered with. At the saine
time our form of chain has the advantage of being cast without shrinkage, instead of
having the form of the well known "Ewart" "Detachable Drive-Chain;"
besides, the hook is dispensed with, our chain working equally well on either side,
the durability being thus doubled.
The pin or rivet may be either cast or rolled, the latter preferable, in which case
we use the ordinary rolls usual for drawing round rods of iron or steel, each roll

page_text: having a groove turned in order to form the feather, the length of the feather being
regulated by stopping up the groove at the requisite distances so as to produce
alternate feather and journal. In this manner the rods can be cheaply produced, and
sawed between the feathers, producing pins of the requisite lengths, and diameters,
and of an accuracy unattainable by any ordinary process of casting them singly.
Our form of link and feathered pin is also adapted for many other purposes, such
as parts of machines where rivetted work could not be used, also for ships' cables,
enabling repairs to be made to such, without the aid of a blacksmith's fire, the cable
being joined by two half links with the feathered pins hereinbefore described.
Dated this 23rd day of November 1887.
ERNEST DE PASS, Fel. Inst. P.A
68, Fleet Street, London,
Agent for the Applicants

page_text: COMPLETE SPECIFICATION.
Improvements in Chain and other Links Connected by Pins.
We, JOSEPH ELTON BOTT, of Levenshulme, Manchester, in the County of Lancastor,
Metallurgical Engineer, and CHARLES HAYES COUSINS, of 7 Broadgate, Lincoln, in
the County of Lincoln, Engineer, 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 (reference being had to the accom-
panying drawings, and to the letters and figures marked thereon) that is to say :-
Our invention relates to improvements in chain and other links connected by pins,
and will be readily understood on reference to the accompanying drawings, in
which: Fig. 1 is a front view of a portion of our detachable chain, shewing our
improved construction and arrangement of link, Fig. 2 being a side view thereof.
Figs. 3 and 4 are a front and end view respectively of a feathered pin or rivet for
connecting and securing the improved links, and Fig. 5 shews, on a reduced scale,
two of the links placed in position ready to receive the feathered pin or rivet.
In carrying out our invention, and in order that each link composing the chain
may be detachable, we construct each such link A, in the form of a fork, having a
boss or head B. This boss or head is bored centrally and horizontally, as shewn, and
has a keyway b formed in it. At the lower end of each of the limbs of the fork is
also a boss C, provided with a central bore and a keyway c, the keyways in these
bosses being formed at right angles to the keyway in the boss or head B, so that
when the bore of the forked ends of the preceding link is placed axially with the bore
of the boss of the succeeding link, the respective keyways are out of line in every
position, except at a right or other angle from the horizontal line.
a
In order to connect the forked links together we use a pin or rivet D, having
central feather d, the length of the boss B, and two cylindrical ends d*, d*, forming
journals, the width of each of the bosses C terminating the fork.
When it is required to construct or build up a chain, according to our invention,
the links are placed at the proper angle (preferably a right angle) as shewn in fig. 5,
until the keyway b in the boss B, and the keyways c in the forked ends C, coincide,
as shown in fig. 5, the pin D is then introduced and the links turned in line with
each other, the pin will then be found to be secure between the two forked ends.
The forked ends of the links work on the journals d*, dx formed by the cylindrical
ends of the pins or rivets, thus constituting a chain whose links are easily detachable
when required, but, when stretched in a working position are absolutely prevented
from falling out, or even being tampered with.
At the same time, our form of chain link has the advantage of being cast without
shrinkage, and differs from the links of the well known "Ewart" "Detachable Drive
Chain "inasmuch as the hook is dispensed with, our chain working equally well on
either side, the durability being thus doubled.
The pin or rivet may be either cast or rolled, the latter preferable, in which case
we use the ordinary rolls usual for drawing round rods of iron or steel, each roll

page_text: having a groove turned therein in order to form the feather, the length of which can
be regulated by stopping up the groove at the requisite distances so as to produce
alternate feather and journal. In this manner the rods can be cheaply made and
sawed between the feathers, thus producing pins of the requisite lengths and diameters,
and of an accuracy unattainable by any ordinary process of casting them singly.
Our form of link and feathered pin is also adapted for many other purposes, such
as parts of machines where rivetted work could not be used, also for ships' cables,
enabling repairs to be made thereto without the aid of a blacksmith's fire, the cable
being joined by two half links, with the feathered pins herein before described.
Having now particularly described and ascertained the nature of our Invention and
in what manner the same may be carried into effect we claim :
The improved construction of link for detachable chains, and other purposes, and
the mode of connecting and securing the said links one to the other, substantially as
described and shewn.
Dated this 23rd day of August 1888.
ERNEST DE PASS, Fel. Inst. P.A.,
68, Fleet Street, London,
Agent for the Applicants.