Improvements in Hose Couplings.
Year: 1891

page_text: Date of Application, 11th Aug., 1891
Complete Specification Lelt, 11th Sept., 1891-Accepted, 17th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Hose Couplings.
I, WILLIAM LEWIS JOHNSON of Pomona in the County of Los Angeles, State
of California, United States of America, Machinist, do hereby declare the nature
of this invention to be as follows:-
My invention relates to a spring controlled locking latch for hose couplings.
The latch consists of a bail pivoted by side arms to side trunnions on one part
of the coupling and being of semi-circular form in end view so as to partly embrace
the other portion of the coupling and engage with studs at opposite sides thereof.
To ears on the back of the U shaped bail is pivoted the yoke or forked portion of
a latch lever, a spring being coiled about the pivot pin with its ends bearing against
the bail and yoke respectively. The lever terminates in an eye in which is pivoted
a hand link. When the two parts of the coupling are united by the bail on the
one part engaging with the lugs on the other part, the free end of the latch lever
abuts against a stop on the part of the coupling on which the bail is pivoted, and
so locks the bail in the engaged position by preventing rearward motion of the latch
lever without which the bail cannot be disengaged.
To uncouple, the latch lever is first disengaged from the stop (with which it is
held in engagement by the coiled spring) thus permitting the bail to be thrown
back on its pivots.
Dated this 11th day of Av
-
1001
W. L. JOHNSON.
By A. M. & Wm. Clark,
53; Chancery Lane, London, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in Hose Couplings.
State
I, WILLIAM LEWIS JOHNSON of Pomona, in the County of Los Angeles,
of California, United States of America, Machinist, 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:-
My invention relates to an improvement in hose couplings and has for its object
to provide a spring-controlled locking latch capable of expeditious and convenient
manipulation in effecting a quick firm and close connection of the two parts of the
coupling.
Reference is to be had to the accompanying drawings, forming part of this
Specification, in which
Figure 1 is a perspective view of the coupling having the latch applied thereto
and illustrating the latch in its locked position and Figure 2 is a longitudinal
section through the part of the coupling carrying the latch, the latch being also in
section and the other part of the coupling being shewn in elevation.
Similar figures and letters of reference indicate corresponding parts in both
views.
The latch consists of a bail 10 having arms 11 fulcrumed or pivoted, at opposite
sides of the female part A. of the coupling, to trunnions 12. The part 10 of the
bail is semi-circular and has rearwardly-extending ears 14 to which the yoke or
forked portion 15 of a lever 19 is pivoted by a pin 16 or its equivalent, a spring 17
being coiled around the pin and bearing at one end against the bail and the other
end of the spring being attached to the yoke 15. The pivoted members of the

page_text: yoke 15 are bevelled at their outer ends to engage with the bevelled or inclined
recesses 18 in the bail, as illustrated in Figure 1. The shank 19 of the lever ter-
minates in an eye 20 in which a link or loop 21 is pivoted. In the line of motion
of the lever there is a lug 22 upon the coupling A, which acts in the capacity of
a stop against which the end 22 of the lever 19 abuts when the bail is in the
engaged position shewn in Figure 1. The male part B of the coupling has studs 23
at opposite sides with which the recesses 13 in the bail engage, the bail being held
in positive engagement therewith through the medium of the spring-controlled
lever abutting against the stud 22 and preventing the rearward motion of the bail
about its pivots. When it is desired to uncouple, the lever 19 is lifted by the
link 21 against the tension of the spring 17 and as soon as the end 20 is free of the
lug 22 it is permitted to slide down the inclined rear face of the lug which carries
the bail to the position indicated in Figure 2. By reason of the rearward and
downward inclination of the arms 11 of the bail, the recesses 13 engaging with
the studs 23, are more or less cam recesses.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is―
1. The combination, with a hose coupling, of a latch consisting of a bail normally
located in front of one end of the coupling provided with rearwardly and down-
wardly extending arms pivoted to the coupling and semi-circular recesses at the
junction of the arms with the bail a spring-controlled yoke pivoted to the rear
portion of the bail a lifting device connected with the yoke and a lug located upon
the coupling adapted as a stop for the yoke and to maintain the bail in a locked
position, substantially as described.
2. The combination, with a coupling, of an essentially semi-circular bail vertically
located with respect to the front of the coupling and extending beyond said front, the
said bail being provided with arms pivoted to the coupling at opposite sides and cam
recesses at the junction of the arms with the bail, a lug formed upon the coupling
and having an inclined rear face and a spring-controlled yoke pivotally attached
to the bail between its arms and provided with an eye having an attached lifting
device, which eye is adapted for engagement with the lng, as and for the purpose
set forth.
3. The combination, with two engaging sections of a hose coupling one section
being provided with posts or studs at opposite sides, and the other with a lug, of a
latch pivoted upon one coupling essentially U-shaped in front elevation and
extending beyond one face of said coupling, the said bail being provided with arms
pivoted to the coupling and cam recesses at the junction of the arms with the bail
adapted to receive and engage with the posts or studs of an opposed coupling, a
spring-controlled yoke pivoted to the bail between its arms adapted for engage-
ment with the lug upon the coupling having the latch attached and a lifting device
connected with the yoke, substantially as specified.
Dated this 11th day of September 1891
W. L. JOHNSON.
By A. M. & Wm. Clark,
53, Chancery Lane, London, Patent Agents.