A New or Improved Device for Stopping Leakage in Hose and other Pipes.
Year: 1888

page_text: Date of Application, 25th Aug., 1888
Complete Specification Left, 27th May, 1889-Accepted, 13th July, 1889
PROVISIONAL SPECIFICATION.
A New or Improved Device for Stopping Leakage in Hose and
other Pipes.
I, JOHN LAWRENCE, of Uckfield, in the County of Sussex, Millwright and Engineer,
do hereby declare the nature of this invention to be as follows:-
This Invention relates to a new or improved device for stopping the leakage in hose
and other pipes such as cold, hot water, or steam pipes subjected to high pressure,
which can be readily effected without the necessity of stopping or turning off the
supply or pressure.
This would be of great utility in cases where the hose of a hydrant should burst
while being used for putting out fires and for other purposes.
My invention consists of a cylindrically formed piece of india rubber, loather,
sacking or like waterproof material of sufficient thickness to resist any pressure that
the force at the leakage may subject it to-The cylindrically formed material is divided
lengthways on one side, and at or near the edges of same are attached one, two or
more handles rivetted or otherwise firmly secured to the material by means of iron
plates or like devices.
The part of the handle which is attached to the india-rubber or other substance is
of angular construction and slightly concave, so that when the cylindrically formed
part is passed round the pipe and over the leakage, by means of pressure upon the
handles from either side, the cylindrical material or sleeve is firmly and securely
tightened over the leakage thereby effectually stopping same.
By means of a pawl and ratchet arrangement the sleeve or outer cylinder is firmly
held in its place until it is required to be removed.
In some cases I may form a band of iron attached to the handles, provided with a
joint and passing round the pipe, and to the inner side I attach the india-rubber or
other material-Or it may be constructed of flexible steel and when compressed by
the handles would form a band round the pipe.
The handles may be so constructed as to admit of their being removed after the
band is fixed and the leakage stopped, and the bands may be permanently secured to
the pipes by means of screws, bolts or like device.
1000
HUGHES, ELI & HUGHES,
76, Chancery Lane, London, W., Agents for the Applicant.
COMPLETE 'SPECIFICATION.
A New or Improved Device for Stopping Leakage in Hose and
other Pipes.
I, JOHN LAWRENCE, of Uckfield, in the County of Sussex, Millwright and Engineer,
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, that is to say :-
This Invention relates to a new or improved device for stopping the leakage in hose
and other pipes such as cold, hot water, or steain pipes subjected to bigh pressure
which can be readily effected without the necessity of stopping or turning off the
supply, or pressure. This would be of great utility in cases where the hose of a
hydrant should burst while being used for putting out fires and for other purposes.
My Invention consists of a cylindrically formed piece of India Rubber, leather,
sacking, or the like waterproof material of sufficient thickness to resist any pressure

page_text: that the force at the leakage may subject it to. The cylindrically formed material is
divided lengthways on one side and at or near the edges of same are attached, one,
two, or more bandles, riveted or otherwise firmly secured to the material by means of
iron plates or like devices. The part of the handle which is attached to the india
rubber or other substance is of angular construction and slightly concave so that when
the cylindrically formed part is passed round the pipe and over the leakage by pressure
upon the handles from other side, the cylindrical material or sleeve is firmly and
securely tightened over the leak, thereby effectually stopping same. By means of a
pawl and ratchet arrangement the sleeve or outer cylinder is firmly held in its place
until it is required to be removed. In some cases I may form a band of iron attached
to the handles, passing round the pipe having a joint in samo and to the inner side
I attach the india Rubber or other material, or it may be constructed of flexible steel
which when compressed by the handles would form a band round the pipe. The handles
may be so constructed as to admit of their being removed after the band is fixed and
the leakage stopped, and the bands may be permanently secured to the pipe by means
of screws, bolts, or like device.
My improved device consists essentially of a cylinder of india rubber or of other
suitable waterproof material divided vertically and of sufficient thickness to resist the
pressure exerted by the liquid which projects with force from the leakage. This india
rubber cylinder is enclosed in another cylinder of iron, steel or other suitable metal
male of two parts or halves hinged together at the rear, and provided at their front
edges with vertical bars furnished with tapped holes in which are screwed one or more
pairs of handles. Or I may use preferably for enclosing the india-rubber cylinder a
continuous sheet of flexible steel or again I may rivet vertical bars such as above
mentioned directly to the india rubber cylinder and fix handles thereto. The said
hinged plate or flexible sheet metal is provided with a flange formed on its outer edges
and cut away in parts for the passage of two straps (one on each side) which overlap
one another when the device is closed and thus press the edges of the india rubber
inwardly.
Fig. 1 is an elevation of my improved locking device and Fig. 2 is a plan of the
samie.
p in
A is the india rubber split cylinder over which is placed a sheet of flexible steel S
(or as the case may be a cylindrical casing composed of two curved plates hinged at
the back) whose edges are furnished with two flanges f, f, by the side of which are
formed, shrunk, rivetted, or screwed two vertical bars B B each bar being provided
with one or several (one only is shewn in the drawing) tapped perforations
which are screwed the handles hh. The flanges ff are cut off at c c for the
passage of two or several pairs of straps s, s', (two are only shewn on the drawing)
overlapping each other and having for object as already stated to prevent the edges
of the india rubber cylinder e e from protruding between the flanges f, f of the steel
or other metal sheet aud hence the device from being properly closed. The handles h¹
have each a rectangular shauk carrying a central serew to be fixed in the tapped
perforations above mentioned, these shanks having rectangular openings
through which is passed a curved rack R. The opening o' acts as a catch or pawl to
enter the teeth of the said rack R.
o
The flanges fare furnished with perforations formed at different intervals opposite
one another to receive suitable bolts.
When a leakage occurs in a pipe the india rubber split cylinder is placed around
the same and the steel sheet is made to enclose the latter while the handles being
screwed on the latter are pressed or squeezed together by hand to bring the flanges in
sufficiently close a contact for bolting, the straps assisting in the meanwhile in keeping
the edges of the india rubber cylinder in position.
The flanges are prevented from separating while being bolted by reason of the
catch formed in the opening o¹ entering successively between the teeth of the rack R
as the handles are being firmly tightened. The bolts having now been passed through
their respective perforations p p are tightened by suitable nuts and when the whole
device is thus properly fixed and consolidated so as to effect a hermetical closure and

page_text: practically stop the leakage, the handles are then unscrewed and withdrawn, the joint
being couplete.
!
Having thus 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
claimsis:-
1. In improved device or apparatus for stopping leakage in hose or other pipes
the combination of an india rubber split cylinder with a metallic and cylindrical casing
or envelope formed of two plates hinged at the rear or preferably of a continuous
sheet of flexible steel and provided with flanges secured by bolts with vertical bars,
overlapping straps, and handles substantially as and for the purpose described.
2. In devices for stopping leakage in hose or other pipes applying vertical bars
to the edges of a split cylinder of india rubber or other resilient material said bars
having tapped perforations in which are screwed one or several pairs of handles,
substantially as described and shewn and for the purpose set forth.
3: In devices for stopping leakage in hose and other pipes the combination with a
circular, or other rack with a spring or other catch formed within the butt onds of the
handles; for promptly and effectually locking the device substantially as and for the
purpose set forth.
១៥,
Dated this 25
1000
HUGHES, ELI & HUGHES,
76, Chancery Lane, London, W.C., Agents for the Applicant.