An Improved Plug for Stopping Holes in Ships Hulls, Boilers, Tanks, and the like, Applicable also for Replacing Rivets and Studs.
Year: 1898

page_text: Date of Application, 20th Oct., 1893
Complete Specification Left 14th July 1899-Accepted 20th Oct. 1899
PROVISIONAL SPECIFICATION.
An Improved Plug for Stopping Holes in Ships Hulls, Boilers, Tanks,
and the like, Applicable also for Replacing Rivets and Studs.
EDMUND READ, Mechanical Engineer, Hope Villa, 7, Liverpool Road, Saint
Albans, in the County of Hertfordshire, I, Edmund Read, Mechanical Engineer,
do hereby declare the nature of this invention to be as follows:-
A piece of metal afterwards to be called the plug of any suitable shape and
material with a nut screwed on one end. The plug is bored and screwed through
the centre of its entire length for the purpose of receiving a taper ended screw
"afterwards" to be called the expanding screw. The plug is tapered at one end
and this end is slotted across "and across its centre (thus forming four segments)
the slots being cut tapered to allow the centre hole to be nearly closed when
segments are pressed togeather," when segments are pressed ready for use the
taper end is about paralell with the screwed end so that it can be passed through
the plates of ship, boiler, tank, or the like.
MODE OF WORKING.
To stop a hole in hull of ship while afloat "either above" or below" the water
line from the inside, or in a boiler, or tank, or the like from the outside, viz.:
Pass the aforesaid plug through the hole until the depth of slots or segments
have passed the outside plate." Then screw down expanding screw until the
tapered part has passed through the plug, the plug being held in position by a
key fitted on the nut end of plug, the expanding screw pressing against the closed
parts of segments forces them outwards thereby forming a kind of rivet head,
the nut on opposite end is then screwed down on gremmit & washer making a
sound joint. To replace a broken stud in cylinders or steam jackets or the like,
where possible" drill through hole, and repeat process as per ships,
boilers, &c., the same where there is difficulty in passing a bolt (viz.) drop in
plug & screw down expanding screw, & tighten nut, or where it is not possible
to hold up behind a rivet (as in upright boilers) between fire box and outer
shell of boiler, would sometimes save fixing a screwed patch.
66
Doted this 19th day of October 1898.
An Improved Plug for Stopping Holes in Ships Hulls, Boilers, Tanks,
and the like, Applicable also for Replacing Rivets and Studs.
I, EDMUND READ, Mechanical Engineer, late of 7, Liverpool Road, Saint Albans,
now residing at 59, Wellesley Road, Leytonstone, Essex, do hereby declare the
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page_text: 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:-
And consists of the following parts afterwards to be called-1, the plug,
2, the nut for making joint, 3, expanding screw, 4-the handle.
The plug 1 is a piece of metal of any suitable shape and material, bored,
"and a threaded screw cut-through the centre of its entire length for the purpose
of receiving the expanding screw, 3. The expanding screw 3 has a small handle 4,
attached for holding plug in position when being fixed. One end of said screw
is tapered. The plug 1 is tapered at one end and screwed to receive nut 2-at
the opposite end. The face of the tapered end is slotted across--and across its
centre the slots being any suitable depth and are made wedge shaped to permit
the segments of slotted end being pressed togeather. The slots across the tapered
end of plug 1 having formed 4 segments of equal proportions. When the segments
are pressed togeather the slotted end becomes paralell with the screwed end-
thus bringing the plug into form for inserting through the hole to be stopped,
the expanding screw 3, being drawn back ready for forcing the segments out-
wards. and thereby forming a sort of rivet head, the nut 2 is for making the
joint good after the expanding screw 3 has been forced hard down on plug 1.
(Mode of Working) The plug 1 is passed through the hole to be stopped until
the slotted end is clear of the opposite side of plate, then turn expanding screw 3
until the head of same is hard down on plug 1-by this time the taper end of
expanding screw 3 has passed through the plug 1, thereby forcing the 4 seg-
ments of slotted end outwards" and a kind of rivet head is formed, the nut 2 is
then run down hard on the plate-thereby drawing the segments tight against
the opposite side of plate" and forming a joint.
66
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:-
An improved plug for stopping holes in ships hulls, boilers, tanks, and the
like applicable also for replacing rivets and studs.
Dated this 15th day of July 1899.