Improvements in Couplings for Hose and other purposes.
Year: 1893

page_text: Date of Application, 30th Aug., 1893
Complete Specification Left, 28th May, 1894-Accepted, 7th July, 1894
PROVISIONAL SPECIFICATION.
Improvements in Couplings for Hose and other purposes.
1, EDWIN JAMES PRESTON of the Firm of J. Stone & Co. of Deptford, in the
County of Kent, Engineers, do hereby declare the nature of this invention to be
as follows:-
In most of the existing so-called instantaneous couplings the locking arrangement
is complicated by the use of springs or loose parts which are always liable to get
out of order and naturally become weaker after comparatively short wear thus
allowing leakage at joints; or the two halves of the coupling are not interchangeable
which may cause great difficulty in coupling up lengths of hose in case of fire. In
most cases also when the two halves of coupling are interchangeable a rubber ring
of specially moulded form is employed to form the joint which is not readily
replaced.
In my improved coupling I provide each half coupling with a projecting lug
having a lateral flange along its upper inclined face. This flange enters a recess
and takes under a flange in the other half coupling. The first part of the incline
is comparatively steep for ready entry while the latter part is only very slightly
inclined forming an angle of rest and efficiently locking the coupling. The packing
for making tight joint consists, by preference, of a rubber ring in each half
coupling of a plain rectangular section readily obtained and replaced when required.
The proper position for joining the two halves of the coupling is indicated by lugs,
notches or other marks on both.
001 1
1000
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Couplings for Hose and other purposes.
I, EDWIN JAMES PRESTON of the Firm of J. Stone & Co. of Deptford in the
County of Kent, Engineers, 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 :-
In most of the existing so-called instantaneous couplings the locking arrangement
is complicated by the use of springs or loose parts which are always liable to get
out of order and naturally become weaker after comparatively short wear thus
allowing leakage at joints; or the two halves of the coupling are not interchangeable
which may cause great difficulty in coupling up lengths of hose in case of fire. In
most cases also when the two halves of coupling are interchangeable a rubber ring
of specially moulded form is employed to form the joint which is not readily
replaced.
In my improved coupling I provide each half coupling with a projecting lug
having a lateral flange along its upper inclined face. This flange enters a recess
and takes under a flange in the other half coupling. The first part of the incline is
comparatively steep for ready entry while the latter part is only very slightly
inclined forming an angle of rest and efficiently locking the coupling. The packing
for making tight joint consists by preference of a rubber ring in each half coupling
CD 077

page_text: of a plain rectangular section readily obtained and replaced when required. The
proper position for joining the two halves of the coupling is indicated by lugs,
notches or other marks on both.
In the accompanying drawing
Figure 1 is a perspective view of one half coupling, both halves being precisely
alike and interchangeable; Figure 2 a perspective part sectional view of same and
Figure 3 a perspective view of the assembled parts or halves forming the
improved hose coupling.
Each half coupling is provided with a projecting lug a having a lateral flange a¹
along its upper inclined face. This flange a enters a lateral recess b¹ under a
flange b in the other half coupling. The first part of the inclined flange a¹ and of
the corresponding recess 61 is comparatively steep for ready entry while the latter
part is only very slightly inclined, forming an angle of rest and efficiently locking
the coupling without liability to shake loose and become undone. The packing for
making tight joint consists in the example shewn of a rubber ring c in each half
coupling of a plain rectangular section readily obtained and replaced when
required. The notches d indicate the proper position for joining the two halves of
the coupling.
Having now 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
claim is :-
1. A hose coupling consisting of two like and interchangeable halves or parts
each provided with a projecting lug having a lateral flange along its upper inclined
face and a corresponding inclined lateral recess all so arranged that the flange of
each half coupling enters the recess of the other half coupling and locks them
securely together substantially as set forth.
2. The construction of hose coupling shewn on the drawing.
Dated this 28th day of May 1894.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.