Improvements in the Construction of Centrifugal Pumps for Lifting Acids or Acid Liquors.
Year: 1892

page_text: Date of Application, 17th Mar., 1892
Complete Specification Left, 17th Dec., 1892-Accepted, 28th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in the Construction of Centrifugal Pumps for Lifting
Acids or Acid Liquors.
I WILLIAM MARSH of Radcliffe New Road Whitefield near Manchester
in the County of Lancaster, Mason and Contractor, do hereby declare the nature
of this invention to be as follows:-
The object of this invention is to construct a centrifugal pump suitable for the
purpose of lifting hot or cold acids or acid liquors such as are required by bleachers
and for other purposes.
According to my invention I construct the casing of the pump of two blocks of
stone with a horizontal joint at the centre and connected together by bolts of copper
or enamelled iron.
The cavity in which the centrifugal bucket revolves and the hole through which
the spindle passes are worked half in one block and half in the other so as to
correspond, and the inlet and outlet passages to and from the cavity are also
worked in the corresponding stone blocks.
The bucket is made of lignum vitæ placed against a collar on the spindle and is
screwed up into position by means of a three armed open washer and screwed nut
made of brass or enamelled iron. The spindle is also made of enamelled wrought
iron, or it may be cased with wood in those parts exposed to the action of
the acid.
1
The short end of the spindle works in a gland made of brass or enamelled iron
secured in the stone casing by means of copper bolts and lined with a bush of
lignum vitæ to prevent the deleterious action of the acid.
The driven end of the spindle passes out of the stone casing through a similar
gland or stuffing box also fixed with copper bolts and protected by a bush or lining
of lignum vitæ. The driving drum or pulley is keyed upon this part of the spindle.
Dated this 16th day of March 1892.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in the Construction of Centrifugal Pumps for Lifting
Acids or Acid Liquors.
1, WILLIAM MARSH, of Radcliffe New Road, Whitefield, near Manchester,
in the County of Lancaster, Mason and Contractor, 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 :-
The object of this invention is to construct a centrifugal pump suitable for the
purpose of lifting hot or cold acids or acid liquors such as are required by bleachers
and for other purposes.
The nature of my said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference to
the annexed sheet of drawings and the following explanation thereof.

page_text: of stone with a horizontal joint at the centre and connected together by bolts 6 of
copper or enamelled iron.
The cavity in which the centrifugal bucket c revolves and the hole through which
the spindle d passes are worked half in one block and half in the other so as to
correspond and the inlet passage e and outlet passage f to and from the cavity are
also worked in the corresponding stone blocks.
The bucket c is made of lignum vitæ (or it may be of brass) placed against a
collar g on the spindle d and is screwed up into position by means of a three armed
open washer h and screwed nut i made of brass or enamelled iron. The spindle d
is also made of enamelled wrought iron, or it may be cased with wood in those
parts exposed to the action of the acid.
The short end of the spindle a works in a gland made of brass or enamelled
iron secured in the stone casing a a¹ by means of copper bolts, and lined with a
bush m of lignum vitæ to prevent the deleterious action of the acid.
The driven end of the spindle d passes out of the stone casing a through similar
gland or stuffing box n also fixed with copper bolts and protected by a bush or
lining o of lignum vitæ. The driving drum or pulley is to be keyed upon this part
of the spindle. p is the suction pipe made also of a block of stone and 9 is a ball
valve preferably made of or covered with india rubber.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is :-
The construction of centrifugal pumps for lifting acids or acid liquors by the
combination and arrangement of parts substantially in the manner and of the
materials hereinbefore set forth and described, and illustrated by the drawings
annexed.
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicant.