Springless Hose and Nozzle Coupling.
Year: 1897

page_text: Date of Application, 24th July, 1897-Accepted, 20th Nov., 1897
Springless Hose and Nozzle Coupling.
We, GUSTAF ALFRED ANDERSON and JOHN ADRIAN DAVENPORT, Jr., of the City
of Ottawa, County of Franklin and State of Kansas, Merchants, 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:-
Our invention relates to hose-couplings, and our object is to produce a device
of this character which positively and reliably couples two sections of hose together,
and combines simplicity, strength, durability, and cheapness in a high degree.
To this end, the invention consists in certain novel and peculiar features of
construction and organization of parts, as hereinafter described, and pointed out
in appended claims.
In order that the invention may be fully understood, reference is to be had to
the accompanying drawing, in which:
Figure 1, represents a perspective view, showing all of the parts of the coupling
detached from each other.
Figure 2. is a longitudinal sectional view of the coupling, with the parts in
their proper relative positions.
Figure 3. is an elevation, partly broken away, in order to disclose more clearly
the method of fastening the coupling-sections together, on the line 3-3 of Figure 2.
Figure 4. is a longitudinal sectional view of the coupling, and
Figure 5. is a transverse sectional view taken on the line X-X of Figure 2,
and showing part of the coupling broken away.
Similar reference numerals designate corresponding parts.
1. designates a short pipe-section, to one end of which hose of varying diameters
may be attached. At its opposite end, which is preferably enlarged, it is pro-
vided with an internal flange 3º, and external screw-threads 3b.
4. designates a second pipe-section, which is adapted to be attached to another
section of hose, and in diameter preferably corresponding to the section 1. Said
section 4 is provided externally at diametrically opposite points with the lugs or
ears 5, which are pointed at one end, as shown at 7; tapering toward such end
for a purpose which will hereinafter appear.
Upon said tapered or cam faces of the lugs, near their opposite ends, are the
teeth or offsets 6. The tapered or diminished end of cach lug is opposite the
abrupt end of the other. The passage of said section is flared at one end, as shown
at 4.
8 designates the middle section of the coupling-nut, which may be cylindrical
in form, as shown, or externally angular if desired, and said nut is internally
screw-threaded at one end, as shown at 9, and is cylindrically smooth at its opposite
end, as shown at 10, and said screw-threaded and smooth surfaces 9 and 10,
respectively, are separated by an inwardly projecting annular flange or shoulder 11.
At the end of the coupling-nut provided with the cylindrical passage 10, at
diametrically opposite points, the segmental shoulders 12 project inwardly for a
suitable distance, so as to be apart a distance slightly exceeding the diameter of

page_text: the section 4 of the coupling. These shoulders are of such length that the dis-
tance between their contiguous or adjacent ends slightly exceeds the length of
the lugs 5, hereinafter described, so as to form cavities or recesses 13, correspond-
ing approximately in contour with said lugs. At diametrically opposite points
cavities 14 are formed in the inner faces of the lugs 12, and are adapted to receive
the teeth or offsets 6, as is hereinafter more particularly explained.
14 designates an elastic washer which is interposed between the flange 11, and
section 4, and its function is by expansive action to hold the offsets into the
cavities 14, and thereby prevent back-rotation of the section 4.
15 designates a packing-ring of rubber or equivalent material, which corresponds
in diameter internally to the section 4. Externally said ring is frustum-shaped,
as shown, and corresponds to the angle of the beveled or flared end 4", of the
section 4. Said packing-ring is also provided at one end with an annular out-
wardly-projecting flange 16, which corresponds externally to the diameter of
the passage 10.
17 designates a metallic bushing, which is of cylindrical form, and corresponds
in external diameter to the internal diameter of the packing-ring and the section 4.
Said bushing is provided with a series of slits 18, and is of spring metal, so as
to adapt itself and fit tightly and snugly in its proper position hereinafter referred
to.
To properly assemble these several parts in their relative positions in order to couple
two sections of hose together, the elastic washer 14" is slipped within the coupling-
mut 8, and fitted against the annular flange 11, as shown in Figure 2.
packing-ring 15 is then slipped into position.
The
The section 1 is now screwed into place with its external threads 3b engaging
the internal threads 9 of the coupling-nut, until it bears tightly against the flange
of the packing-ring.
The section 4 is now arranged with the lugs 5 in longitudinal alignment or
registering with the correspondingly contoured cavities or recesses 13, of the
coupling-nut, and is then slipped within said coupling-nut until its end bears
against the opposing end of the packing-ring, and against the elastic washer.
It is then turned or twisted in the direction indicated by the arrow, Figure 1,
in order that the cam-faces of the lugs may travel upon the correspondingly in-
clined faces of the shoulders 12 (as shown; most clearly in Figure 3).
This
operation, of course, causes said section to move further into the coupling-nut,
and consequently compress the elastic washer.
When the coupling-section has been turned or twisted about 45 degrees the
teeth or offsets 6 register with and are forced into the cavities 14 by the action of
said washer, which thus holds said coupling-section in operative position with a
yielding pressure.
This construction provides an absolutely water-tight and at the same time a
simple, durable, and inexpensive coupling.
As the packing-ring is exposed to the action of the water and the sand and
other foreign substances carried by the water, which would tend in a short time
to wear it out, we employ the cylindrical bushing, which is arranged as also
shown in Figure 2, and being of spring-metal, fits tightly in order to prevent the
water, when travelling in the direction indicated by the arrow in said figure,
forcing it from position.
To uncouple, the section 4 is grasped and first pushed inwardly to disengage the
teeth or offsets 6 from the cavities 14, and then turned in the direction opposite
that indicated by the arrow, Figure 1, until the lugs 5 again register with the
cavities or recesses 13, when it may be slipped out of engagement with the coupling-
ring.
In order that section 1 may be easily disconnected from the coupling-nut, we
preferably form it with holes or apertures at diametrically opposite points, as
shown at 1, to be engaged by a wrench of any suitable construction.
Referring now to the modified form of construction illustrated in Figure 4
and 5, it will be noticed that I provide a spring-actuated dog to lock the coupling-

page_text: i
Because of this, it is obvious that I may and do dispense with the teeth or
.offsets 6 upon said lugs.
This dog, numbered 19, is approximately L-shaped, and is pivotally mounted
as at 20 in the opening 21, formed externally in the nut S.
A spring 22 is interposed between the nut and the handle of the dog, and
tends to constantly hold its free end depressed and in the path of rearward unlock-
ing movement of one of the lugs 5, of section 4.
་་
To remove said coupling, it is first necessary to place a thumb or finger on and
depress the handle end of the dog. This of course, raises its free end and permits
the section 4 to be rotated backward and uncoupled from the nut, as will be readily
understood.
It is obvious that the elastic washer may be dispensed with to advantage.in
the form first described, as the tapering wall of the packing-ring performs its
function satisfactorily
From the above description it will be apparent that we have produced a coupling
which will be effective in an air-pipe or liquid pipe system, and which in effect
amounts to a springless hose-pipe coupling.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is:
1. A hose-coupling, comprising a coupling-nut having its passage screw-threaded
at one end, an annular flange projecting inwardly, and flanges or shoulders pro-
jecting inwardly also from the opposite end of the coupling-nut, and having their
inner faces inclined or cam-shaped and provided with cavities, of length to form
diametrically opposite recesses or cavities, and of width to leave a space between
them and the adjacent side of the annular flange or shoulder, in combination. with
a pipe-section having a flared end fitting between said segmental flanges or
shoulders, and having cam-faced lugs interposed between the same and the
annular flange or shoulder of the coupling-nut, and provided with teeth or offsets
projecting from their cam faces and engaging the cavities of said shoulder, a
second pipe-section, enlarged at one end and externally screw-threaded to engage
the threads of the coupling-nut, and provided also at said end with an inwardly-
projecting flange, a packing-ring of elastic material and of frustum shape in
cross-section fitting snugly within the annular flange or shoulder of the coupling-
nut, and bearing at one end with a yielding pressure against the first named
coupling-section and into the flared end of the same, and at its opposite end
against the last-nained coupling-section, and a slotted metallic bushing of spring-
metal fitting within the packing-ring and the first named coupling-section, all
arranged substantially as and for the purpose set forth.
2. A hose-coupling, comprising a coupling-nut having an inwardly projecting
annular flange or shoulder, internal screw-threads at one side of said flange or
shoulder, flanges or shoulders projecting inwardly at the opposite side of said
flange or shoulder, in combination with a section having a screw-threaded portion
engaging said internal threads, a second section rotatably fitting between the in-
wardly projecting flanges or shoulders at the opposite end of the coupling-nut,
and provided with external lugs or ears fitting between said shoulders and the
inwardly projecting flange or shoulder, and a ring fitting within the said annular
flange or shoulder and the adjacent end of said section provided with the ears or
lugs, so as to break the joint between said section and the coupling-nut, and pro-
vided with an external annular flange or shoulder interposed between the annular
flange or shoulder of the coupling-nut and the adjacent end of the screw-threaded
coupling-section, substantially as set forth.
3. A hose-coupling, comprising a coupling-nut, having its passage screw-threaded
at one, end, an annular flange or shoulder projecting inwardly from said coupling-
nut at the opposite end from that occupied by the internal threads, and of length
to form, diametrically opposing recesses or cavities, and of width to leave a space

page_text: between them and the adjacent side of the annular flange or shoulder, and a stop-
lug interrupting or occupying the space between said annular flange and one of
said flanges or shoulders, in combination with a pipe-section, fitting rotatably
between said segmental flanges or shoulders, and having lugs or ears engaging
the space between said flanges or shoulders and the shoulder of the coupling-nut,
one of which lugs or cars engages the stop-lug, a second-pipe-section, having
external screw-threads engaging the internal threads of the coupling-nut and a
ring or band of flexible material fitting snugly within the annular flange or
shoulder of the coupling-nut and projecting into the adjacent end of the first
mentioned pipe-section, and provided with an external annular flange or shoulder
which is tightly clamped between the annular flange or shoulder of the coupling-
nut and the adjacent end of the screw-threaded pipe-section, substantially as set
forth.
4. A hose-coupling, comprising a coupling-nut having its passage screw-threaded
at one end, an annular flange or shoulder projecting inwardly from said coupling-
nut about midway its length, flanges or shoulders projecting inwardly from said
coupling-nut at the opposite end from that occupied by the internal threads, and
of length to form diametrically opposing recesses or cavities, and of width to
leave a space between them and the adjacent side of the annular flange or shoulder,
and a stop-lug interrupting or occupying the space between said annular flange
and one of said flanges or shoulders, in combination with a pipe-section fitting
rotatably between said segmental flanges or shoulders, and having lugs or ears
engaging the space between said flanges or shoulders and the annular shoulder
of the coupling-nut, one of which lugs or ears engages the stop-lug, a second pipe-
section, having external screw-threads engaging the internal threads of the
coupling-nut, a ring or band of flexible material fitting snugly within the annular
flange or shoulder of the coupling-nut and projecting into the adjacent end of
the first mentioned pipe-section, and provided with an external annular flange
or shoulder which is clamped between the annular flange or shoulder
of the coupling-nut and the adjacent end of the screw-threaded pipe-
section, and a spring-actuated dog or pawl having an arm or tooth projecting
through an opening.in the coupling-nut adjacent to and in the path of the lug
or car engaging said stop-lug, so as to prevent, in conjunction with said stop-lug,
the rotatable movement of the coupling-nut and said pipe-section provided with
said lug or ear, substantially as set forth.
second
5. A hose-coupling, comprising a coupling-nut having its passage screw-threaded
at one end, an annular flange or shoulder projecting inwardly from said coupling-
nut about midway its length, flanges or shoulders projecting inwardly from said
coupling-nut at the opposite end from that occupied by the internal threads, and
of length to form diametrically opposing recesses or cavities, and of width to leave
a space between them and the adjacent side of the annular flange or shoulder, and
a stop-lug interrupting or occupying the space between said annular flange and
one of said flanges or shoulders, in combination with a pipe-section fitting rotatably
between said segmental flanges or shoulders and having lugs or ears engaging
the space between said flanges or shoulders and the annular shoulder of the
coupling-nut one of which lugs or ears engages the stop-lug, a
pipe-section, having external screw-threads engaging the internal threads of the
coupling-nut a ring or band of flexible material fitting snugly within the annular
flange or shoulder of the coupling-nut and projecting into the adjacent end of
the first mentioned pipe-section, and provided with an external annular flange or
shoulder which is clamped between the annular flange or
shoulder
of the coupling-nut and the adjacent end of the screw-threaded pipe-
section, and a spring-actuated dog or pawl having an arm or tooth projecting
through an opening in the coupling-nut adjacent to and in the path of the lug
or ear engaging said stop-lug, so as to prevent, in conjunction with said stop-lug,
the rotatable movement of the coupling-nut and said pipe section provided with
said lug or car and a packing-ring of flexible material interposed between the

page_text: annular flange or shoulder of the coupling-nut and the opposing end of the pipe-
section provided with said lugs or ears, substantially as described.
Dated this 29th day of June 1897.
GUSTAF ALFRED ANDERSON.
JOHN ADRIAN DAVENPORT JR.