IMPROVEMENTS IN WASTE PLUGS
Year: 1878

page_text: LETTERS PATENT to Herbert John Haddan, of the Firm of Herbert and
Company, Solicitors of Patents, of 67, Strand, in the City of Westminster,
Civil Engineer, for the Invention of "IMPROVEMENTS IN WASTE PLUGS." A
communication from abroad by James Powell, of Cincinnati, in the State of
Ohio, in the United States of America.
COMPLETE SPECIFICATION filed by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 21st October 1878.
HERBERT JOHN HADDAN, of the Firm of Herbert and Company, Solicitors of
Patents, of 67, Strand, in the City of Westminster, Civil Engineer. "IMPROVE-
MENTS IN WASTE PLUGS." A communication from abroad by James Powell, of
Cincinnati, in the State of Ohio, in the United States of America.
The Invention relates to that class of earthenware, porcelain, or enameled wash
basins, in which an opening is provided in the bottom of the basin for the ready
discharge of the waste water, which opening is closed, when desired, by a plug or
stopper. And also to that class of bath tubs, sinks, or wash trays, etc., in which a
metallic socket or mouth-piece is placed in the opening in the bottom of the vessel
for the ready discharge of the waste water; and which metallic socket is, in the
case of a wooden sink; secured to the same by screws passing through the rim of
the socket; while, in the case of such vessels, sinks, or tubs, lined with metal, the
socket or bearing for the plug is attached to said lining by means of solder around
the rim, the said wasteway being closed, when desired, by means of a plug or
stopper.
The object of the Invention is to provide a light and highly elastic form of
stopper, which shall preclude any possibility of breakage by its use, and which
shall, at the same time, insure great economy and expedition of manufacture, and
quite obviate the necessity of having to grind the stopper to a bearing to render

page_text: the same water-tight, and which shall also preclude any possibility of indentation
or defacement of the metallic lining or socket, and quite obviate the necessity of
having to grind either stopper or socket to a bearing to secure a water-tight joint.
Figure 1 represents by axial section a basin of earthenware, porcelain, or enameled
ware, whose wasteway or socket consists of a conical tube, within which the waste-
way plug or stopper is seen in elevation.
Fig. 2 is an axial section of one form of plug.
Fig. 3 is an axial section of a modification of plug.
Fig. 4 represents an axial section of a form of plug and of a corresponding
metallic socket.
Fig. represents such a plug applied to a common screw-threaded socket pipe.
And Fig. 6 is a section of modified construction of the plug.
A represents a basin of the usual form; K, the customary conical discharge orifice
or wasteway, constituting a socket for the plug or stopper; B is the plug or stopper
composed of vulcanized india-rubber B¹ or other analogous material; C is tho
shank or stem, terminating below in a swell c, by which it is anchored within the
plug, and above in a perforated head c', through which passes a ring D by which
the plug is lifted out of its place. The sides of the plug are made tapering to fit
the corresponding taper hole or socket K; or a disc or washer L may be.secured to
the under side of plug B by the formation of a head M at the lower end of shank C,
as represented in Fig. 6; or the plug and shank may be united in any other
convenient manner.
The plug or stopper may be formed of solid rubber, moulded while in the plastic
state in an iron mould, and then vulcanized in the usual manner of preparing
rubber articles.
E, Fig. 3, is a stopper constructed by confining a tube, ring, or disc of rubber 2
packing F upon the mole G between two washers H and I, of which the lower
washer I may be a nut, which, in conjunction with collar j of stem J, operates to
firmly clamp the rubber packing F upon the mole G.
A plug made as shown in Fig. 3 may be adapted to a larger or smaller socket by
causing the washers to approach or recede from one another, so as to bring a greater
or less compression upon the packing.
The Invention is not confined to the precise form here shown, as several modifi-
cations may be made without departing from the principle thereof. For instance, a
solid rubber plug may be so formed as to have a raised stem or eye r to receive the
ring D; or the rubber packing may take the form of a simple conical disc having a 3
central orifice through which the stem being passed is secured by means of a nut.
CLAIMS.
1. A wasteway plug having its bearing sides constructed wholly of rubber or
equivalent yielding material for the purposes set forth.
2. The elastic packing F, mole G, washers H, I, and stem J, j, combined and 4
arranged substantially as and for the purposes set forth.
3. A wasteway plug having its bearing sides constructed wholly of rubber or
equivalent yielding material in combination with a metallic seat or socket, for the
purposes set forth.
In witness whereof, I, the said Herbert John Haddan, have hereunto set my 4
hand and seal, this Twenty-first day of October, A.D. 1878.