AN APPARATUS FOR STOPPING RENTS OR HOLES IN FIRE-ENGINE HOSE AND OTHER ELASTIC TUBES OR PIPES.
Year: 1860

page_text: LETTERS PATENT to Robert Dawbarn, of Wisbech, in the County of
Cambridge, Merchant, for the Invention of "AN APPARATUS FOR STOPPING
RENTS OR HOLES IN FIRE-ENGINE HOSE AND OTHER ELASTIC TUBES OR
PIPES. A communication from abroad by John S. Mackay, of Brooklyn,
New York, in the United States of America.
Sealed the 7th May 1861, and dated the 1st December 1860.
PROVISIONAL SPECIFICATION left by the said Robert Dawbarn at the
Office of the Commissioners of Patents, with his Petition, on the 1st
December 1860.
I, ROBERT DAWBARN, of Wisbech, in the County of Cambridge, Merchant,
do hereby declare the nature of the said Invention for "AN APPARATUS FOR
STOPPING RENTS OR HOLES IN FIRE-ENGINE HOSE AND OTHER ELASTIC TUBES OR
PIPES," (which has been communicated to me from abroad by John S. Mackay,
of Brooklyn, New York, in the United States of America,) to be as follows:-
This apparatus consists of two plates of metal of an oval form, with raised
and indented edges on the two opposing surfaces, which are curved to corre-
spond with the curvature of the filled hose. One or more screws are perma-
nently fixed to the lower (or inside) plate. On the middle part of the screw
(when one only is used) there is a square or oblong shank, and in the upper
(or outer) plate is a slot passing through and forming part of the same, which

page_text: fits upon the shank of the screw and enables the position of the inner and
outer plates to be adjusted, so as to enclose the injured part of the hose.
Upon the outer end of the screw is placed a tightening nut. In the event of
a hose bursting while in use, the inner plate is inserted through the opening
(which, if not large enough, must be enlarged), and when the two plates are
so placed as to enclose the rent or opening, the tightening nut is screwed down,
bringing the two plates into contact and forming a water-tight joint around
the rent or opening.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Robert Dawbarn in the Great Seal Patent Office on the
30th May 1861.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, ROBERT
DAWBARN, of Wisbech, in the County of Cambridge, Merchant, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the First day of December, in the year of our Lord
One thousand eight hundred and sixty, in the twenty-fourth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said Robert Dawbarn, Her special licence, that I, the said Robert
Dawbarn, my executors, administrators, and assigns, or such others as I,
the said Robert Dawbarn, my executors, administrators, and assigns,
should at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"AN APPARATUS FOR STOPPING RENTS OR HOLES IN FIRE-ENGINE HOSE AND OTHER
ELASTIC TUBES OR PIPES," communicated to me by John S. Mackay, of
Brooklyn, New York, in the United States of America, upon the condition
(amongst others) that I, the said Robert Dawbarn, my executors or adminis-
trators, by an instrument in writing under my, or their, or one of their hands
and seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and cause the
same to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said Robert Dawbarn, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-

page_text: formed, to be particularly described and ascertained in and by the ionowing
statement thereof, that is to say :-
This apparatus for stopping rents or holes in fire-engine hose and other
elastic tubes or pipes consists of two plates of metal of an oval or other suit-
able form, with raised and indented edges on the two opposing surfaces, which
are curved to correspond with the curvature of the filled hose. One or more.
screws are permanently fixed to the lower (or inside) plate. On the middle,
part of the screw (when one only is used) there is a square or oblong shank,
and in the upper (or outer) plate is a slot passing through and forming part of
the same, which fits upon the shank of the screw and enables the position of
the inner and outer plates to be adjusted, so as to enclose the injured part.
of the hose. Upon the outer end of tho screw is placed a tightening nut. In
the event of a hose bursting while in use, the inner plate is inserted through
the opening (which, if not large enough, must be enlarged), and when the two
plates are so placed as to enclose the rent or opening between them, the tight-
ening nut is screwed down, bringing the two plates into contact with the inner
and outer surfaces of the hose, and forming a water-tight joint around the rent.
or opening.
And in order that the same may be more fully understood reference is had
to the Drawings hereunto annexed, and to the following description thereof.
The same letters refer to similar parts in each of these Drawings.
Figure 1 is a side view in perspective of the apparatus; Figure 2 is a longi-
tudinal side elevation of the under (or inner) plate; on the upper side of this
plate there is a square (or it may be an oblong) shank a terminating in a
screwed stem b; Figure 3 is the upper (or outer) plate furnished with a
slotted boss c to receive the shank a of Figure 2. A tightening nut d revolves
On the upper end
upon the screw stem b, being turned by a lever handle e.
of the screwed stem 6 a washer ƒ may be placed, to prevent the nut d from
being detached. Figure 4 is a longitudinal section, and Figure 5 a cross section
of the apparatus. It will be seen that the upper and lower plates are of an
oval form, with raised edges of a curvature corresponding to that of the hose
in its distended state. The raised edges are indented or furrowed so as to
embrace and hold more firmly the leather or other material of which the hoso
is composed. In cases where a mere furrowing or indentation of the edges is
supposed to be insufficient to grasp the hose with the requisite tightness, pro-
jecting teeth may be added as is shewn at Figure 6. The upper plate,
Figure 3, is made with a hollow concave on its under side to form a chamber
to receive the lips of the hose that may turn up round the shank a. This
hollow is clearly shewn in the cross section, Figure 5. The connection of the

page_text: upper and lower plates by the shauk.a enables the operator to command the
position of the inner plate, which must of necessity correspond with that of the
outer one. In the event of a hose bursting, the screw nut d having been suffi-
ciently loosened, the lower plate of the apparatus is inserted through the rent
(which, if not large enough for the purpose, must be made so) into the hose,
and the apparatus adjusted so as to enclose the rent between the raised edges
of the apparatus, the tightening nut being then screwed down the edges of the
plates compress the hose firmly between them and make a water-tight joint.
Figure 7 shews the apparatus as applied to stop the rent in a hose.
Figure 8 shews a modification of the apparatus in which the oval form is
departed from to render it more particularly applicable for stopping rents in
rivetted leather hose, which most frequently occur in the line of the rivets.
Having now described the nature of the Invention which has been commu-
nicated to me, and the manner of performing the same, I desire it to be
understood that what I claim is, the apparatus for stopping rents or holes in
fire-engine hose and other elastic tubes or pipes substantially as herein-before-
described and shewn in the annexed Drawings.
In witness whereof, I, the said Robert Dawbarn, have hereunto set my
hand and seal, this Twenty-ninth day of May, in the year of our Lord
One thousand eight hundred and sixty-one.
ROBERT DAWBARN. (L.S.)
Witness,
JOHN FREDERICK TYARS,
Clerk to Messrs. Dawbarn & Sons.