Improvements in Machinery Used in the Manufacture of Earthenware Sanitary Pipes.
Year: 1893

page_text: Date of Application, 8 h Sept., 1893
Complete Specification Left, 7th June, 1894-Accepted, 14th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in Machinery Used in the Manufacture of
Earthenware Sanitary Pipes.
We HEMAN COULTHURST, JESHURUN COULTHURST, and ARMENA
COULTHURST, all of Robert Street Foundry, Darwen in the County of
Lancaster, Engineers, do hereby declare the nature of this invention to be as
follows:-
This invention relates to machinery employed in the manufacture of sanitary
pipes from clay and especially to the means of supporting the table which carries
the socket head and the clay pipe as the latter is forced through the die of such
machines.
The said table is mounted upon a central stud or pin capable of turning in a
vertical boss or socket in a cross bar or bridge piece supported upon two or more
sliding rods (preferably hollow) and thus the said table can be tightened up and
adjusted to the die without danger of straining or bending its supporting rods.
The latter pass through suitable guides or sockets fixed say to the flooring and are
connected together at their lower ends by a suitable cross bar to which is attached
one end of a chain which is carried over a chain pulley upon a short shaft mounted
in convenient fixed bearings.
To the other end of this chain is attached a suitable weight hereafter referred
to, the said weight having therefore a tendency to raise the table and cause the
chain pulley and its shaft to revolve. We also mount on the said shaft a brake
wheel provided with a suitable brake lever connected to a treadle so that the motion
of the shaft and consequently that of the table can be retarded or arrested thereby
if required.
We further mount upon the said shaft one or more compensating pulleys in the
form of a cam or cams each pulley being provided with a wire rope cord or its
equivalent which can be weighted.
As the pipe is being formed and the table descends with it the chain is wound
round the pulley and the wire rope or its equivalent is wound upon the cam pulley
which gradually increases in diameter, and thus offers greater résistance to the
descent of the table as the weight of the pipe increases.
1
We propose to mount two or more of these cam pulleys upon the shaft so that pipes
of various lengths can be made equally well by the same apparatus, the weight put
upon the cam pulley corresponding to the length of pipe required.
The weight on the wire rope or its equivalent should be equal to that of an
eighteen inch length of the body of the pipe and the weight on the chain should
balance the table the socket head and the clay in the socket head less the weight
on the cam pulley when applied at the point nearest the centre thereof.
A bracket or projection is fixed or formed upon the bar or bridge on which the
table is mounted and this bracket or projection is caught by a spring catch (the
length of which is adjustable) when the table has descended to its lowest position
required for forming the desired length of pipe; and a suitable lever or handle is
provided to release this catch when it is desired to raise the table again.
Dated this 7th day of September 1893.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.

page_text: Improvements in Machinery Used in the Manufacture of
Earthenware Sanitary Pipes.
We HEMAN COULTHURST, JESHURUN COULTHURST, and ARMENA.
COULTHURST, all of Robert Street Foundry, Darwen in the County of
Lancaster, Engineers, 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:-
This invention relates to machinery employed in the manufacture of sanitary
pipes from clay and especially to the means of supporting the table which carries
the socket head and the clay pipe as the latter is forced through the die of such
machines:
Our invention will be readily understocd from the following description on
reference to the accompanying sheet of drawings on which Fig. 1 is a back view
and Fig. 2 a sectional elevation of the table above named supported by our improved
counterbalancing apparatus.
The said table a is mounted upon a central stud or pin b capable of turning in &
vertical boss or socket c in a cross bar or bridge piece o supported upon two or
more sliding rods d (preferably hollow) and thus the said table a can be tightened
up and adjusted to the die without danger of straining or bending its supporting
rods. The latter pass through suitable guides or sockets e fixed say to the flooring
as shewn and are connected together at their lower ends by a suitable cross bar c
to which is attached one end of a chain c which is carried over a chain pulley f
upon a short shaft 9 mounted in convenient fixed bearings.
To the other end of this chain is attached a suitable weight hereafter referred
to not shewn on the drawings, the said weight having therefore a tendency to raise
the table a and cause the chain pulley and its shaft g to revolve. We also mount
on the said shaft g a brake wheel h provided with a suitable brake lever i and
band connected to a treadle so that the motion of the shaft g and consequently
that of the table a can be retarded or arrested thereby if required.
We further mount upon the said shaft g one or more compensating pulleys k in
the form of a cam or cams each pulley being provided with a wire rope k', cord or
its equivalent which can be weighted.
As the pipe is being formed and the table a descends with it, the chain e is
pulled round the pulley f which it causes to revolve and the wire rope or its
equivalent is wound upon the cam pulley k which gradually increases in diameter,
and thus offers greater resistance to the descent of the table a as the weight of the
pipe increases.
"
We propose to mount two (or more) of these cam pulleys k and of varying
size upon the shaft g so that the pipes of various lengths can be made equally well
by the same apparatus, the weight put upon the cam pulley corresponding to the
length of pipe required.
The weight on the wire rope k¹ or its equivalent should be equal to that of an
eighteen inch length of the body of the pipe and the weight on the chain o³ should
balance the table a the socket head and the clay in the socket head, less the weight
on the cam pulley when applied at the point nearest the centre thereof.
A bracket or projection is fixed or formed upon the bar or bridge c¹ on which
the table a is mounted and this bracket or projection is caught by a spring
catch (the length of which is adjustable or to which a longer catch can be fixed
as seen by the dotted lines) when the table a has descended to its lowest position
required for forming the desired length of pipe; and a suitable lever m or handle
is provided to release this catch / when it is desired to raise the table again.

page_text: Having now particularly described and ascertained the nature of our said inven--
tion and in what manner the same is to be performed we declare that what we
claim is :-
1. The improved means for supporting the table of an earthenware sanitary
pipe making machine substantially as hereinbefore described and illustrated by the
annexed drawings.
2. The improved means for counterbalancing the aforesaid table and pipe.
substantially as hereinbefore described and illustrated by the drawings annexed.
3. The general construction and arrangement of apparatus combined and
operating substantially as herein before described and illustrated by the drawings.
annexed.
Dated this 5th day of June 1894.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants..