AN IMPROVEMENT IN SEWED OR SEAMED HYDRAULIC HOSE
Year: 1873

page_text: LETTERS PATENT to William Morgan-Brown, of the Firm of Brandon
& Morgan-Brown, Engineers and Patent Agents, of 38, South-
ampton Buildings, London, and 13, Rue Gaillon, Paris, for the
Invention of "AN IMPROVEMENT IN SEWED OR SEAMED HYDRAULIC
HOSE." A communication from abroad by Theodore Ayrault
Dodge, of Cambridge, Middlesex County, Massachusetts, United
States of America.
Sealed the 9th September 1873, and dated the 27th May 1873.
COMPLETE SPECIFICATION filed by the said William Morgan-Brown
at the Office of the Commissioners of Patents, with his Petition
and Declaration, on the 27th May 1873, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
MORGAN-BROWN, of the Firm of Brandon and Morgan-Brown, Engineers
and Patent Agents, of 38, Southampton Buildings, London, and 13, Rue
Gaillon, Paris, send greeting.

page_text: WHEREAS I am in possession of an Invention for "AN IMPROVEMENT
IN SEWED OR SEAMED HYDRAULIC HOSE," and have petitioned Her most
Excellent Majesty Queen Victoria to grant unto me, my executors,
administrators, and assigns, Her Royal Letters Patent for the same, and
have made solemn Declaration that it has been communicated to me
from abroad by Theodore Ayrault Dodge, of Cambridge, Middlesex
County, Massachusetts, United States of America.
NOW KNOW YE, that I, the said William Morgan-Brown, do hereby
declare the nature of the said Invention to be as follows:-
This Invention consists in an improvement in sewed or seamed
hydraulic hose.
In the manufacture of sewed hydraulic hose there is more or less
difficulty from leakage when the hose is subjected to severe hydraulic
pressure. To remedy this the sewed seams have been formed in various
ways, sometimes with a welt and sometimes without, semetimes by
sewing several parallel scams, and sometimes by bending and interlock-
ing the edges previous to uniting them. But all these methods although
possessing value are not sufficient in themselves to effectually stop all
leakage under severe pressure.
In this Invention, say for a sewed hose, where one edge is lapped over
the other, and the two are united by a simple sewed seam, the stitches
passing through from outside to inside or vice versa, I cement by
well-known and suitable cements of caoutchouc or other material, to the
inner surface of the tube, and covering the stitches a welt or inner strip,
the pressure against which can only force it tighter upon the seam.
This Invention consists in a sewed hose as described, or a hose with
lapped and cemented edges having this inner strip applied not as part
of the seam, but wholly independent thereof, and to cover the seam.
The Drawing hereto attached represents a piece of hose embodying
the improved construction.
Figure 1 shews a view of the hose from the outside; Figure 2 is across
section of it. a denotes the body of the hose or the hose strip; b, c, are the
two united edges, the edge 6 lapping; the edge c, d, denotes the line of
stitches that unites the edges. The joint or connection being thus made
a stripe is cemented to the inner surface of the tube and covers the
inner part of the stitches. This strip renders the joint inaccessible to

page_text: the water within the hose, even under the greatest pressure, as the
pressure only serves to pack the welt against or over the seam. The
seam may be variously made, but the strip is always applied sub-
stantially as shewn, and its application is preferably effected as the
sewing or the connection of the edges progresses.
I sometimes find it an advantage to pass the tube through presser
rolls to cause the strip to adhere more firmly, and in some cases I have
found it an advantage to vulcanize the said cement holding the said
strip. For this purpose I take the tube in convenient lengths and fill it
with chalk or other suitable material to prevent adhesion of the strip
and the other parts, and then subject the same to heat to cause the
vulcanization; or I blow steam through the tube which gives the
necessary heat and pressure for the vulcanization. In these cases the
suitable mixture in the cement is used as in the ordinary requirements
of vulcanization.
Having now described and particularly set forth the nature of the
said Invention, and the manner of carrying the same into effect, I would
have it understood that what I claim as my Invention is, a hose
having the inner surface of the seam covered by the cemented strip e,
substantially as described.
In witness whereof, I, the said William Morgan-Brown, have here-
unto set my hand and seal, this Twenty-seventh day of May,
in the year of our Lord One thousand eight hundred and seventy-
three.