IMPROVEMENTS IN THE CONSTRUCTION OF BATHS
Year: 1881

page_text: LETTERS PATENT to Charles Dohrn Douglas, of the Firm of Charles Douglas
and Company, of London and Glasgow, Enamellers, for an Invention of
"IMPROVEMENTS IN THE CONSTRUCTION OF BATHS."
PROVISIONAL SPECIFICATION left by the said Charles Dohrn Douglas at
the Office of the Commissioners of Patents on the 25th August 1881.
CHARLES DOHRN DOUGLAS, of the Firm of Charles Douglas and Company, of
London and Glasgow, Enamellers. "IMPROVEMENTS IN THE CONSTRUCTION OF
BATHS."
My Invention relates to further improvements in the construction of baths, as
constructed by me under Letters Patent granted to me on the 15th of April 1880,
No. 1538, and has for its object to facilitate the fitting of the bath and to lessen
the expense of such fitting. Instead of fitting the discharge pipe as described in my
Baid former Patent, there is formed in the casting or moulding process in one with the
end or the side of the bath a chamber which acts in all respects as the common and
ordinary stand or rod pipe. At the bottom of this chamber I attach the ordinary
valve by a suitable arrangement, whereby the rubber washer is screwed or otherwise
fastened to the interior of the ordinary union. An opening or doorway wide
enough to admit the hand freely is provided through the wall of the bath leading
into this chamber, whereby the valve can be examined and the working parts
adjusted, removed, cleansed, or renewed, without taking down any of the wood or
other work in connection with the bath.
I prefer to enamel or japan the interior of the chamber, and to galvanize the
tube or drop overflow which works therein, in order to prevent corrosion from
taking place.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Charles Dohrn Douglas in the Great Seal Patent Office on the
25th February 1882.
CHARLES DOHRN DOUGLAS, of the Firm of Charles Douglas and Company, of
London and Glasgow, Enamellers. "IMPROVEMENTS IN THE CONSTRUCTION OF
BATHS."
My Invention relates to further improvements in the construction of baths, as
constructed by me under Letters Patent granted to me, dated 15th April 1880,
No. 1538, and has for its object to facilitate the fitting of the bath and to lessen
the expense of such fitting. Instead of fitting the discharge pipe as described in
my said former Patent, there may be formed in the casting or moulding process in
one with the end or side of the bath a chamber which acts in all respects as the
common and ordinary disconnected stand or rod pipe. At the bottom of this
chamber I prefer to attach a valve, herein after described, by a suitable arrange-
ment, whereby the rubber washer is screwed or otherwise fastened to the interior
of the ordinary union. An opening or doorway wide enough to admit the hand
freely is provided through the wall of the bath leading into this chamber, whereby
the valve can be examined and the working parts adjusted, removed, cleansed, or
renewed, without taking down any of the external wood or other work in connection
with the bath.
I prefer to enamel or japan the interior of the chamber, and to galvanize the
tube or drop overflow which works therein, in order to prevent corrosion from
taking place.
When desirable and for convenience in manufacturing the bath, the chamber
may be formed separately, and suitably attached to the bath by brazing or
otherwise.
And in order that my said Invention may be more fully understood reference is
made to the accompanying Drawings, in which similar letters of reference indicate
similar parts in both Figures.
Fig. 1 is a sectional elevation through a portion of the bath and centre of the
chamber a, shewing the valve b and overflow pipe c in position, the valve b being
shewn closed by the pipe c resting in the valve b, herein after described, the door d
being also closed.
Fig. 2 is a similar sectional elevation shewing the overflow pipe c or other plug
raised by raising the waste handle and allowing the water to escape. By applying
the finger and thumb to the catch in the door d the door may be raised or moved
from position to admit the hand freely to the interior of the chamber a. The pipe o
or other plug may be removed from the chamber a through the doorway, as shewn
at e in Fig. 3, which
Fig. 3 is also a sectional elevation, the dotted lines at e representing the position
of the doorway, the door and also the overflow pipe and moveable valve seating
being removed.
Fig. 4 is a perspective elevation of a portion of the bath, shewing the chamber
formed in one casting with the bath, and shewing also the fittings exclusive of the
discharge or overflow pipe and its valve.
Fig. 5 is a horizontal section of a portion of the bath, showing the chamber
formed separately from the bath, and brazed or otherwise suitably attached to the
bath.
At the bottom of the chamber a there may be formed or cast in one with the
chamber a flange f, as shewn in Fig. 1, to which may be bolted or screwed a union,
as shewn in Fig. 6, the joint being made water-tight when firmly screwed to the

page_text: valve f by means of a washer of india rubber or other suitable material previously
inserted in a groove provided in the face of the union. A suitable screw is cut in
the interior of Fig. 6 to receive Fig. 7, which may be screwed into it by hand from
the interior of the chamber a
Fig. 7 is a metallic washer having screw-threads cut upon the under and upper
projections, as shewn, the lower portion i being made to fit into i of Fig. 6, and
may have on the upper side four (or more or less) projections to receive and hold
the rubber ring g, Fig. 10, the spaces k, k, in Fig. 10, being formed to receive the
projections k, k, shewn in Fig. 7.
Fig. 8 is a washer which is screwed down on to Fig. 7, and presses down upon
the surface of the rubber or other ring g, Fig. 10, so as to retain the same firmly
in position, the two projections h, h, Fig. 8, being provided as lugs for screwing or
unscrewing the washer, Fig. 8, in order to remove, renew, refit, adjust, or repair
the rubber or other valve. Fig. 9 is a section of the union and valve on the line
m, m, of Fig. 8.
An overflow union j is shewn in dotted lines in Figs. 1, 2, and 3. This is only
required when a plug is used instead of a pipe c in the chamber a.
Having thus particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, I wish it to be under-
stood that what I claim and desire to be secured to me by the herein before in part
recited Letters Patent is,-
1. The arrangement and formation of a chamber in baths for the reception of the
necessary pipe and fittings in order to render such pipe and fittings accessible from
the interior for the purposes of fitting, adjusting, renewing, and repairing the same,
and preventing the necessity of removing any of the external work for such
purposes, substantially as herein before described and shewn on the Drawings, or
any mere modification thereof.
2. The manner and construction of the accessible valve, as and for the purposes
herein before mentioned, and as shown in Figs. 6, 7, 8, 9, and 10, or any mere
modification thereof.
In witness whereof, I, the said Charles Dohrn Douglas, have hereunto set
my hand and seal, this Twenty fifth day of February, in the year of our
Lord One thousand eight hundred and eighty two.