Improvements in Joints for Drain and other Pipes.
Year: 1899

page_text: Improvements in Joints for Drain and other Pipes.
I, LEWIS HERBERT HOLLIDAY, of No. 227, High Road, Streatham, London,
S.W., Surveyor, do hereby declare the nature of this invention to be as follows: --
-
This invention relates to improvements in joints for drain and other pipes, and
consists in providing means whereby a perfectly close and strong joint is obtained
at the junction of one drain or other pipe with another, while at the same time
a true alignment of the pipes at the joints is ensured, and the risk of the pipes
becoming stopped up is almost entirely eliminated.
Furthermore, pipes constructed in accordance with my invention will not
require the aid of skilled labour in laying them; no cement or other obstruction
can get into the pipes, while the joint is being made; a whole system of drainage
can be laid for inspection without the necessity of jointing up the pipes, which
cannot sag when once jointed, while the risk of the spigot ends of the pipes
settling in the soft cement of the joints and thereby forming ripples or weirs
when the joints are being made, is entirely eliminated.
In carrying my invention into practice I cast or mould two or more locking
wedges or keys on the periphery of the pipe near the spigot end thereof, similar
locking wedges or keys being cast or moulded in the socket, of the pipe on the
interior thereof, the said locking wedges or keys being of the same material as
the pipe itself.
The pipes, so provided, are laid in a similar manner to that of ordinary pipes,
the spigot end of one pipe being inserted into the socket end of the next
pipe and the pipe then turned round until the bevelled edges of the locking
wedges or keys on the spigot end of the pipe engage with the bevelled edges of
the locking wedges or keys on the interior of the socket of the other pipe, thereby
forming a close and flush joint.
The said locking wedges or keys may be fashioned in the form of plain bevelled
wedges so as to effect the locking of the joints when the pipes are turned in one
direction, or they may have their contact edges bevelled in two directions from a
central point or apex, so as to form two-way wedges, by means of which the lock-
ing is effected when the pipes are turned in either direction.
If desirable I may coat or line the spigot ends of the pipes and the shoulders
of the sockets thereof with bituminous or other similar material, in order to pro-
duce a water-tight joint without the aid of cement.
HUGHES, SON & Co.,
38. Chancery Lane, W.C., for the Applicant.

page_text: E
I, LOUIS HERBERT HOLLIDAY, of No. 227, High Road, Streatham, London,
S.W., Surveyor, 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 :-
This invention relates to improvements in joints for drain and other pipes, and
consists in providing means whereby a perfectly close and strong joint is obtained
at the junction of one drain or other pipe with another, while at the same time
a true alignment of the pipes at the joints is ensured, and the risk of the pipes
becoming stopped up is almost entirely eliminated.
Furthermore, pipes constructed in accordance with my invention will not
require the aid of skilled labour in laying them, no cement or other obstruction
can get into the pipes while the joint is being made; a whole system of drainage
can be laid for inspection without the necessity of jointing up the pipes, which
cannot sag when once jointed: while the risk of the spigot ends of the pipes
settling in the soft cement of the joints and thereby forming ripples or weirs
when the joints are being made, is entirely eliminated.
In carrying my invention into practice I cast two or more locking wedges or
keys on the periphery of the pipe near the spigot end thereof, similar locking
wedges or keys being cast in the socket of the pipe on the interior thereof, the
said locking wedges or keys being of the same material as the pipe itself.
The pipes so provided, are laid in a similar manner to that of ordinary pipes,
the spigot end of one pipe being inserted into the socket end of the preceding
pipe and the pipe then turned round until the bevelled edges of the locking
wedges or keys on the spigot end of the pipe engage with the bevelled edges of
the locking wedges or keys on the interior of the socket of the other pipe, thereby
forming a close and flush joint.
The said locking wedges or keys may be fashioned in the form of plain bevelled
wedges so as to effect the locking of the joints when the pipes are turned in one
direction, or they may have their contact edges bevelled in two directions from a
central point or apex, so as to form two-way wedges, by means of which the lock-
ing is effected when the pipes are turned in either direction.
If desirable I may coat or line the spigot ends of the pipes and the shoulders
of the sockets thereof with bituminous or other similar material, in order to pro-
duce a water-tight joint without the aid of cement.
In order that this my said invention may be the more readily understood and
carried into practical effect, reference is hereby made to the accompanying sheet
of illustrative drawings wherein :
Fig. 1 is a longitudinal section of two drain pipes in accordance with my inven-
tion and shewn jointed together.
Fig. 2 an elevational view of same.
Fig. 3 is a side elevational view of a drain pipe shewing my locking arrange-
ment on the spigot end thereof,
Fig. 4 being an end elevation of same, while
Fig. 5 is a diagrammatic view of the two forms of locking wedges or keys that
I employ, shewing the operation of same.
Referring to the drawings, wherein like letters of reference indicate correspond-
ing parts throughout the several figures, a represents an earthenware drain-pipe
having the usual spigot end 6 and socket end c.
On the spigot end 6 of the pipe I cast or mould as an integral part thereof, two

page_text: or more locking wedges or keys d, similar locking wedges or keys e being provided
en the interior of the socket end c.
In the case of existing pipes, the said locking wedges or keys would form a
separate part thereof and be fixed to the pipes in any suitable manner, the said
locking wedges or keys in this case preferably being formed of suitable bitu-
minous material.
The said locking wedges or keys de may either be in the form of plain bevelled
wedges or they may take the form of two-way wedges as before stated.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is:
1
1. The improvements in joints for drain and other pipes, consisting in forming
upon the spigot and socket ends of such pipes, a plurality of locking wedges or
keys which are bevelled off from a central apex to form two-way wedges, the said
wedges or locking keys upon the spigot end of a pipe being so arranged that one
of each of their bevelled faces will come in contact with and wedge firmly up
against, the corresponding bevelled faces of the wedges or locking keys on the
interior of the socket end of the other pipe when one of the pipes
turn, substantially as described and illustrated.
given a half-
2. In joints for drain and other pipes, the locking wedges or keys formed of
separate, and preferably bituminous material for application to existing forms of
pipes, each of said locking wedges or keys having a single bevelled surface only,
substantially as described and shewn.
Datod this 7th day of November 1890
HUGHES, SON, & Co.,
38, Chancery Lane, London, W.C., for the Applicant.