Improvements in and connected with the Drain Holes and Gratings of Sinks, Drains, and Analogous Articles.
Year: 1898

page_text: Date of Application, 8th Mar., 1898
Complete Specification Left, 22nd Nov, 1898-Accepted, 23rd Dec., 1898
Improvements in and connected with the Drain Holes and Gratings
of Sinks, Drains, and Analogous Articles.
I, GEORGE HYDE, of Nos. 173 and 175, Kennington Cross, in the County of
Surrey, Manufacturer, and Builder's Ironmonger, do hereby declare the nature of
my invention to be as follows:--
My invention relates to improvements in and connected with the drain holes and
gratings of sinks, drains and analogous articles and the object is to construct a drain
hole in such a manner that a perfect water tight joint can be easily and quickly
made, to provide for the joint being wiped or cleaned from the inside as well as
providing a overhanging protecting flange around the end of the soil pipe connected
therewith, also to provide for the grating being locked in its recess thus preventing
any solid matter being washed down the drain by the grating accidentally coming off
its seat as is the case with loose gratings.
To accomplish this object I prolonge the drain hole for a suitable distance below
the thickness or bottom of the vessel thereby producing a dependent ring around the
hole. Surrounding this ring and concentric therewith 1 form another dependent
ring of a larger diameter, the two providing a concentric cavity between them for
the reception of the end of the soil or other pipe. The outer ring acting as a pro-
tecting and preserving collar for the cement or other material which makes the
joint.
At the top of the drain hole I cut two or more slots in a downward direction and
communicating with semi-circular grooves formned in the periphery of the hole and
near the top thereof. The bottom ledge of these semi-circular grooves I prefer to
slope or round off so as to drain off any water which would otherwise accumulate
there if left square.
Through these slots and into the semi-circular grooves engage L shaped lugs or
feet projecting from the underside of the grating which when the grating is turned,
say for a quarter of a circle, it is locked in position in its recess formed around the
top of the drain hole after the type of the well known bayonet joint.
By unlocking and removing the grating access is given for wiping, making or
cleaning the internal surface of the joint, which joint can be easily reached with the
fingers, also for cleaning and unstopping the pipe.
I
In place of the undercut semi-circular grooves may provide ridges projecting
from the internal periphery of the hole in which case the vertical slots communicating
with the semi-circular grooves would be dispensed with.
The lugs or feet on the underside of the grating may be of any convenient, shape,
for instance, they may be tapered on their top side, and the upper or top side of the
semi-circular groove or underside of the projections slanting in an opposite direction
to that on the feet, so that when the grating was turned to lock it in position the
tapering surfaces of the feet and grooves or projections would have a tendency to
draw and hold the grating tight down upon its seat.
Oh day of March 1808

page_text: Improvements in and connected with the Drain Holes and Gratings
of Sinks, Drains, and Analogous Articles.
I, GEORGE HYDE, of Nos. 173 and 175, Kennington Cross, in the County of Surrey,
Manufacturer and Builder's Ironmonger, 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 improvements in and connected with the drain-holes and
gratings of sinks, drains, and analogous articles, and the object is to construct a
drain-hole in such a manner that a perfect water-tight joint can be easily and quickly
made as well as enabling the joint to be wiped or cleaned from the inside, to provide
a overhanging protecting flange around the end of the soil pipe connected therewitli
and to provide for the grating being locked in its recess thus preventing any solid matter
being washed down the drain by the grating accidentally coming off its seat.
Hitherto it has been the practice to provide drain-holes with a grating loosely
laid in a recess formed around the top thereof, and in some cases the grating has
been provided with a hinge whereby it could be lifted up or down on its pivot.
The great draw back to the loose grating is that it is liable to be easily brushed or
wiped off its seating when the sink is being cleaned, and any solid matter that
may happen to be contained therein at the time, washed down the hole, which in
time causes a blockage in the pipe. In the case of the hinged grating it invariably
happens that the grating is left open when it should be closed, or that it gets
constantly nocked with the attendents brush or whatever he or she is using when
cleaning thereby straining or breaking the hinge, and instead of closing flush
with its recess, it remains half open, allowing solid matter to pass and rendering it
entirely useless for its purpose.
My present invention is designed with a view to remedy the above mentioned
disadvantages, and the essence of it is that the grating can be easily locked firmly
upon its seat by giving it about a quarter turn with the hand thereby preventing the
grating being accidentally removed as is the common occurrence with loose or injured
hinged gratings.
will now proceed to describe my invention in detail with reference to the
accompanying drawings which form part of this specification and in which :-
Figure 1 is a sectional elevation of a portion of a sink fitted with my improved
drain-hole.
Figure 2 is a plan of my improved drain-hole detached.
Figure 3 is an elevation of my improved drain-hole grating.
Figure 4 is a sectional elevation of portion of a sink fitted with my improved
drain-hole and grating, the latter being in its locked position.
Figure 5 is a sectional elevation of a modified form of drain-hole and illustrating
the concentric overhanging flange for protecting the joint of the connecting soil
pipe.
Similar reference letters denote the same parts throughout the drawings:
Referring to Figures 1 to 4, a represents a portion of a sink, b the drain-hole,
the perforated grating and d the waist or soil pipe. The drain-hole proper consists
of a metal bush or lining e provided with a flange f on its upper end and which lies
in a suitable recess formed in the sink bottom a, the lower end of the metal bush or
lining e is extended for a suitable distance below the underneath surface of the sink,
surrounding this extension is fixed the waist or soil pipe d the joint g being so
positioned that its internal surface can be easily reached and wiped or cleaned by the
fingers from the top of the drain.
Extending vertically downward from the top of the drain-hole b I cut two or, more

page_text: slots h, these slots terminate in segmental or semi-circular undercut recesses or
grooves i formed in the internal periphery of the hole b and near its top. The upper
or overhanging surface j produced by the undercut being inclined or wedge shaped,
the bottom ledge being rounded off to prevent any accumulation of water.
Projecting perpendicularly downward from the underside of the perforated grating c
and preferably diametrically opposite to each other are two or more lugs k, at right
angles from these lugs project feet 1, having inclined surfaces n on their upper faces
corresponding with the inclined surfaces; produced by the undercut grooves i, so that
when the grating c is placed in position and given a turn by the hand, the inclined
surfaces n of the feet coming in contact with the inclined surfaces j will lock and
hold the grating firmly upon its seat.
Referring to the modification illustrated in Figure 5, the metal bush or lining e is dis-
pensed with and the drain-hole b which is cut out of the sink proper is prolongued for a
suitable distance below its bottom surface. Surrounding this prolongation and con-
centric with it I provide a collar or overhanging flange o, so that when the end of
the waist or soil pipe d is fixed in position, the collar or overhanging flange o will act
as a protecting agent for the cement p or other material that makes the joint.
Instead of undercutting the internal surface of the hole b to produce the locking
surfaces, I form segmental ridges or projections r, the under surface of which have
the same inclination as the undercut surfaces i.
•
The operation is as follows:-The grating c is taken in the hand and the feet
are guided into the vertical slots h or segmental cavities s until it is down upon its
seating, it is then given a turn, the inclined surfaces n of the feet engaging with
the semi-circular or segmental undercut grooves i or projections 7, drawing and lock-
ing the grating firmly upon its seat.
It will be seen that by reversing the above operation the grating c can be easily
removed and free access given to the interior, to wipe and make the joint y, as well
as making good any blockage that may occur in the adjoining pipes.
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 :-
1. In drain-holes of sinks and the like having a loose grating provided on its under
side with dependent inclined feet adapted to engage with corresponding inclined
surfaces formed on the internal surface of the loose bush or lining to draw and lock
the grating firmly upon its seat substantially as described and set forth.
2. In a drain-hole of sinks and the like consisting of a loose bush or lining having
perpendicular slots communicating with segmental inclined or wedge shaped under-
cut surfaces, and a grating provided with dependent lugs or feet, the upper surface of
said feet being inclined to correspond with the undercut surfaces of the bush or
lining and adapted to hold the grating in its locked position as and for the purpose
described and set forth.
3. In a drain-hole of sinks and the like being provided with segmental inclined
projections, and a loose grating having dependent inclined feet adapted to engage
and be locked by coming in contact with the said projections substantially as
described and set forth.
4. A drain hole projecting below the bottom surface of the sink and provided with
a concentric overhanging flange surrounding and protecting the joint of the adjoining
pipe substantially as described and set forth.
5. A drain-hole constructed and arranged as and for the purpose illustrated.