An Improved Method of Casting the Buffer Holes in the Metal Pedestals of Water Closets.
Year: 1898

page_text: Date of Application, 24th Nov.,
1898
Complete Specification Left, 26th July, 1899-Accepted, 23rd Sept., 1899
PROVISIONAL SPECIFICATION.
An Improved Method of Casting the Buffer Holes in the Metal
Pedestals of Water Closets.
I, GEORGE DONALD INNES, of Bennett's Ironfoundry Company Limited, of
Hyde Road, Ardwick, Manchester, in the County of Lancaster, Manager, do
hereby declare the nature of this invention to be as follows:-
My invention relates to an improved method of casting the buffer holes in the
metal pedestals of water closets and the object of my improvements is to cast
the holes for the indiarubber buffers in an improved manner and to leave a smooth
surface on the top of the pedestal.
It has hitherto been customary to employ a sand core to core out these buffer
holes, or another plan is to employ a mandrel from the upper side of the pedestal.
There are objections to both these plans in the first the hole is likely to be
rough or irregular in size and shape, and in the latter the upper surface of the
pedestal is marked and roughened round the hole.
According to my improvements I take a mandrel composed of cast iron or other
metal and form one end of it to the exact shape of the hole required as a pattern
which must be slightly tapered from the top dwnwards and may be tapered as
much as is desired, and I coat the end of the mandrel with plumbago or other
suitable substance. This mandrel is used from the underside of the pedestal in
place of from the upper side, and in order that this may be done the pattern of the
pedestal is prepared with a space or spaces below the buffer holes for the purpose
of placing the print of the mandrel on the pattern, and also to enable the mandrel
to be knocked out or withdrawn when the casting has been made.,
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1000
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· H. B. BARLOW & GILLETT,
Agents for Applicant.
An Improved Method of Casting the Buffer Holes in the Metal
Pedestals of Water Closets.
I, GEORGE DONALD INNES, of Bennett's Ironfoundry Company. Limited, of
Hyde Road, Ardwick, Manchester, in the County of Lancaster, Manager, 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 invention relates to an improved method of casting the buffer holes in the

page_text: metal pedestals of water closets and the object of my improvement is to cast
the holes for the indiarubber buffers in an improved manner and to leave a smooth
surface on the top of the pedestal.
It has hitherto been customary to employ a sand core to core out these buffer
holes, or another plan is to employ a mandrel from the upper side of the pedestal.
There are objections to both these plans: in the first the hole is likely to be
rough or irregular in size and shape, and in the latter the upper surface of the
pedestal is marked and roughened round the hole.
According to my improvements I take a mandrel composed of cast iron or other
metal and form one end of it to the exact shape of the hole required as a pattern
which must be slightly tapered from the top dwnwards and may be tapered as
much as is desired.
In the accompanying sheet of drawings-
Figure 1 is an elevation and Fig. 2 a plan of a metal pedestal having its buffer
holes cast according to my improved method, Fig. 3 is a transverse vertical section
taken through one of the buffer holes and Fig. 4 is a detail view of the taper
mandrel.
In these views,--a designates the metal pedestal in this case shown made in
two parts secured together so as to be adjustable as to height according to the
Specification of my previous Patent numbered 12054 of 1898, and 6 the taper
mandrel indicated in dotted lines in Fig. 1 and shown detached in Fig. 4. This
mandrel is coated with plumbago or other suitable substance and according to
my invention is used from the underside of the pedestal in place of from the upper
side as hitherto, and in order that this may be done the pattern of the pedestal is
prepared with a space c or spaces below the buffer holes a¹ for the purpose of
placing the print of the mandrel on the pattern, and also to enable the mandrel b
to be knocked out or withdrawn when the casting has been made.
Having now particularly described and ascertained the nature of my said in-
vention, and in what manner the same is to be performed, I declare that what
I claim is :-
The improved method of casting the buffer holes in the metal pedestals of water
closets said method comprising as an essential feature the use of a taper mandrel
from the underside of the pedestal substantially as and for the purposes herein set
forth.
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H. B. BARLOW & GILLETT,
Agents for Applicant.
17, St. Ann's Square, Manchester.