IMPROVEMENTS IN CHAIN PUMPS
Year: 1884

page_text: We SAMUEL BENJAMIN GOSLIN of Jewin Crescent Cripplegate in the County of
Middlesex Engineer and ROWLAND RACKHAM of the Foundry Works Walton on
the Naze in the County of Essex Engineer do hereby declare the nature of our
Invention for "IMPROVEMENTS IN CHAIN PUMPS " to be as follows:-
This Invention has for its object improvements in chain pumps.
We make the discs or pistons of these pumps with central lugs one at the front
and one at the back of each disc. The front lug of one disc or piston we connect
with the back lug of the next by a compound link consisting of two parallel flat
semi links which are pin jointed to the lugs. The chain wheels around which the
endless chain passes have flats upon then between cavities into which the discs or
pistons are received. On these flats as the chain passes around the wheel the
connecting links rest-there are projections springing from the flats which enter
between the two semi links or parts of which each compound link is composed.
As each disc reaches the wheel the fore part of one of the projections on the
wheel comes to abut upon the binder lug of the disc and so the chain is carried
round,
CARPMAEL & Co.,
Agents for the Applicants.

page_text: We SAMUEL BENJAMIN GOSLIN of Jewin Crescent Cripplegate in the County of
Middlesex Engineer and ROWLAND RACKHAM of the Foundry Works Walton on
the Naze in the County of Essex Engineer do hereby declare the nature of our
Invention for "IMPROVEMENTS IN CHAIN PUMPS" and in what manner the same
is to be performed to be particularly described and ascertained in and by the
following statement :—
This Invention has for its object improvements in chain pumps.
We make the discs or pistons of these pumps with central lugs one at the front
and one at the back of each disc. The front lug of one disc or piston we connect
with the back lug of the next by a compound link consisting of two parallel flat
semi-links which are pin jointed to the lugs. The chain wheels around which the
endless chain passes have flats upon them between cavities into which the discs or
pistons are received. On these flats as the chain passes around the wheel the
connecting links rest-there are projections springing from the flats which enter
between the two semi links or parts of which each compound link is composed.
As each disc reaches the wheel the fore part of one of the projections on the
wheel comes to abut upon the hinder lug of the disc and so the chain is carried
round.
In order that our said Invention may be fully understood and readily carried
into effect we will proceed to describe the Drawings hereunto annexed.
DESCRIPTION OF THE DRAWINGS.
Figure 1 is a side elevation of a portion of the upper or driving wheel of a chain
pump constructed in accordance with our Invention.
Figure 2 is a section taken upon the line 1. 1 in Figure 1.
Figure 3 is a plan of one of the compound links and in this Figure portions of
the lugs of the two discs or pistons are also represented.
A is the main axis to which power is applied for actuating the pump by rotating
the axis in any convenient manner.
B is the main wheel fixed upon this axis.
C. C. are the discs or pistons of the pump; they are of a dished form convex on
the side which first touches the water, This formation of the discs considerably
lessens the disturbance created by the discs as they enter and emerge. Each disc
or piston is provided with a lug C₁ projecting in front and another lug C³, projecting
in rear of the disc or piston.
D. D are bars forming the compound links. They are pin jointed in pairs to
the lugs upon the discs or pistons.
As the chain with the discs or pistons passes around the main wheel these
compound links come to bear upon the flats B¹. B¹. and the projections B². B² upon
the wheel enter between each pair of bars D. D. forming the compound link. The
same projections B also bear against the rear lugs C. C. of the discs or pistons
'and thus apply the force to the chain necessary to carry it round with the wheel.
B³ are recesses in the main wheel receiving into them the discs or pistons C.
The cylinder or barrel of the pump is not represented in the Drawings, it is
constructed and arranged in the manner usual in chain pumps and the arrangements
at the lower end of the endless chain may also be as heretofore.

page_text: 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
First. The construction of the endless chain of dises or pistons and the main
wheel of a chain pump substantially as herein described.
Second. The dish form discs or pistons with their lugs C and O substantially as
herein described.
CARPMAEL & Co.,
Agents for the Applicants.