Improvements in Hose Fittings or like Joint-connecting Apparatus.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Hose Fittings or like Joint-connecting Apparatus.
I, JOHN OVIATT DE WOLF, of 579, Massachusetts Avenue, Cambridge, in the
State of Massachusetts, one of the United States of America, Manufacturer, do
hereby declare the nature of this invention to be as follows: -
My invention is a hose fitting, having for its object the provision of means
to make a water-tight and steam-tight joint in connecting hose, making a joint
therein, or securing a nozzle thereto.
Joints are now commonly formed by clamping the hose over an interior metallic
thimble by means of metallic straps passed about the hose and having their ends
drawn together usually by set screws; these joints pinch the hose between the
ends of the straps, and do not uniformly clamp the hose at all points, thereby
inviting leaks.
The provision of overlapping or interlocking tongues adjacent the meeting
ends of these straps does not cure the difficulty of uneven clamping or pressure;
moreover, these overlapping tongues are apt to dig into the surface of the hose.
It is the object of my invention to clamp the hose with a substantially uni-
form pressure at all points, thereby avoiding pinching up the hose at any point
as heretofore.
With this end in view, I provide an inner member or thimble to fit within the
hose, a clamp to embrace the hose between it and said inner member, an outer
leg member preferably wedge-shaped in cross section, and preferably locked to
said inner member at its outer end beyond the hose, and extending against the
hose beneath and between the ends of said clamp, and provided with means
(either the said wedge-shaped or other means) to maintain it in its said position
and prevent it from moving longitudinally of the clamp, or the clamp trans-
versely of it.
Or, in other words, my invention comprises one or more longitudinal members
or leg portions which will be preferably wedge shaped and are preferably held
on an internal thimble, said wedge members receiving the meeting ends of the
clamping members which are bolted or otherwise tightened about the hose.
As the clamping member or clamps are drawn together, they crowd the wedge
members inwardly, thereby pressing in on the hose at those places which would
otherwise bulge or pinch up, or would at least not be pressed in in the same
direction or to the same extent as the remaining circumference of the hose.
My invention also provides a joint of superior rigidity, not liable to injure the
hose or pull out therefrom:
Besides the main object of making an absolutely watertight and steam tight
joint as stated, an object is to provide means, either as a slightly wedge shaped

page_text: leg as stated, or as a leg having a middle lip or other cooperating surface, where-
by the said leg or leg member will remain centred with absolute certainty between
the two ends of the clamping member and will not slip to one side or the other
as the latter is tightened, and yet will be independent thereof; this centreing
being to prevent any possibility of pinching the rubber of the hose between the
clamping members as they are tightened.
The inner and outer cooperating parts between which the hose is secured will
be provided, preferably at their outer ends beyond the hose, with an interlocking
bayonet joint; and preferably also the outer part will be formed in one piece
including a collar to fit around the inner member and having a plurality of legs
extending from said collar, the clamp being independent thereof and overlapping
said legs.
The interior thimble will be of any usual shape and preferably corrugated or
threaded on its outer surface, so as to hold firmly against the hose, and will have
its inner end flaring so as to offer less obstruction to the flow of water or steam
therethrough, and will be slightly tapered exteriorly to enable it to be fitted
readily and properly into any hose of proper size..
Adjacent its outer end the thimble has one or more lugs, preferably two oppo-
site lugs, with cut away sections between them, to cooperate in bayonet joint
fashion with similar lugs on a collar constituting a portion of the outer member,
said collar having preferably two leg members or prongs extending therefrom
longitudinally of the hose, and having their outer surfaces tapered or wedge-
shaped in cross section and terminating at their ends opposite said collar with
lips or stops.
A circular clamp, preferably in two semi-circular heavy flat bands, extends
partially around the hose, being held on said legs by said lips or stops and just
overlapping the edges of the said wedge-shaped legs, these clamps being made
concentric to the hose for most of their inner surface, but extending therefrom
tangentially adjacent the leg members, so that when the tightening bolts or other
tightening means are drawn up, the ends of the clamp will ride on the inclined
sides of the wedge shaped legs, and thereby force said legs radially inward with-
out any tendency to slide them over the surface of the hose.
The legs are preferably concaved on their inner faces to fit snugly on the hose.
The ends of the clamp are preferably thickened to strengthen them against
being sprung over towards each other by the tightening of their bolts and nuts,
and preferably a V-shaped gap is left between said ends so as to afford access
to the legs and bolts for convenience.
I prefer also that the bolts should be squared adjacent their heads to fit squared
apertures in the ends of the clamps.
The interior thimble may have an end flange beyond the bayonet joint referred
to, and on this a nut will be mounted for securing a nozzle or other piece of hose,
the end flange forming a seat for a usual packing ring or gland therefor
By the use of my improvement not only is the hose prevented from bulging
up between the clamps, but it is compressed evenly with a uniform grip at every
point, rendering it absolutely steam tight; moreover, the broad, flat and even
grip of the clamp and legs on the outside of the hose and the corresponding inter-
nal grip of the thimble, the thimble and legs being locked together by their
lugs, render it impossible to pull the hose out of its clamp or to disrupt the joint.
The enlarged lips or stops on the legs prevent the latter pulling out from
beneath the clamps, being more or less embedded in the material of the hose, all
the parts being thus firmly locked together and to the hose.
Dated the 8th day of September 1897
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicant.

page_text: Improvements in Hose Fittings or like Joint-connecting Apparatus.
I, JOHN OVIATT DE WOLF, of 579, Massachusetts Avenue, Cambridge, in the
State of Massachusetts, one of the United States of America, Manufacturer, 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 follow-
ing statement:-
In connecting hose, making a joint therein, or securing a nozzle thereto, it is
exceedingly difficult to make the joint watertight and steamtight.
Joints are now commonly formed by clamping the hose over an interior metallic
thimble by means of metallic straps passed about the hose and having their ends
drawn together usually by set screws; these joints pinch the hose between the
ends of the straps, and do not uniformly clamp the hose at all points, thereby
inviting leaks.
The provision of overlapping or interlocking tongues adjacent the meeting
ends of these straps does not cure the difficulty of uneven clamping or pressure;
moreover, these overlapping tongues are apt to dig into the surface of the hose.
It is the object of my invention to clamp the hose with a substantially uni-
form pressure at all points, thereby avoiding pinching up the hose at any one
point as heretofore.
With this end in view I provide one or more wedge members, preferably held
on the internal thimble, said wedge members receiving the meeting ends of the
clamping members which are bolted or otherwise tightened about the hose.
As the clamping members or clamps are drawn together, they crowd the wedge
members inwardly, thereby pressing in on the hose at those places which other-
wise bulge or pinch up, or would at least not be pressed in in the same direction
or to the same extent as the remaining circumference of the hose.
My invention also provided a joint of superior rigidity not liable to injure the
hose or pull out therefrom.
Further advantages and details of improvement will appear in the course of
the following description of my invention, the latter being more particularly
defined in the appended claims.
In the drawings, illustrative of one embodiment of my invention, Fig. 1 is a
side elevation of my improved fitting applied to a piece of hose and having a
female coupling mounted thereon.
Fig. 2 is a vertical cross-section thereof on line 2-2, Fig. 1.
Fig. is a similar section taken on dotted line 3-3, Figs. 1 and 4.
Fig. 4 is a longitudinal section taken in line 44 Fig. 3.
The interior thimble, having if desired, a corrugated or threaded outer
surface a¹ may be and is of any usual kind being shown as flaring at its inner
end to offer less obstruction to the flow of steam or water therethrough, and
slightly tapered exteriorly to enable it to be fitted readily and tightly into any
hose of proper size.
Adjacent its outer end, the thimble a is shown as having one or more lugs a³,
two opposite lugs being shown, with cut away sections between them, to co-
operate as a sort of bayonet joint with similar lugs c on a collar c¹
In the embodiment of my invention herein shown, the wedge members c
shown as two in number and in the form of prongs or legs, are carried by the
collar cl, said wedge members or legs extending down over the thimble and hose,
and wedge-shaped in cross section, being shown in Fig. 3 as tapering off on each
side and having lips or stops c³ at their ends, this being my preferred construction.

page_text: Clamps d, two being shown, preferably in the form of heavy, flat bands,
extend partially around the hose, just overlapping the edges of the wedge mem-
bers or legs 2.
These clamps are made concentric to the hose for most of their inner surface,
being extended therefrom tangentially at d, to overlie the wedge surfaces of
the legs, and are provided at their ends with suitable clamping means, as
bolts e.
The legs are shown as concaved on their inner faces to fit snugly on the hose.
The ends of the clamp are preferably thickened at to strengthen them
against being sprung over towards each other by the tightening of the bolts and
nuts, and preferably a V-shaped gap is left as shown between the clamps so as
to afford access to the legs and bolts for convenience.
The bolts are shown as squared adjacent their heads to fit squared apertures ³
in the ends of the clamps.
A nut f is shown as mounted to turn on an end flange a³, the latter forming
a seat for a usual packing ring and gland, for making a coupling or other desired
joint.
In use, the legs or prongs will be loosely slid onto the hose, the thimble a
will then be inserted, as shown, within the hose and the collar c¹ given a quarter
turn to carry its lugs c behind the shoulders a² to lock the thimble and collar
together.
The clamps will then be adjusted about the hose, resting on the edges of the
wedge members or legs adjacent the stops 3, and the nuts will be tightened.
As the clamps are brought together, the ends thereof will crowd together over
the inclined surfaces of the legs, forcing the latter inwardly the same as the
clamps are forced inwardly.
The result is that not only is the hose prevented from bulging up between the
clamps, but the hose is compressed evenly with a uniform grip at every point,
rendering it absolutely steam tight; moreover, the broad, flat and even grip of
the clamps and legs on the outside of the hose and the corresponding internal
grip of the thimble, the thimble and legs being locked together by the lugs a³, c,
render it impossible to pull the hose out of its clamp or to disrupt the joint.
The enlarged ends or hooks ³, on the legs, prevent the latter pulling out
from beneath the clamps, the latter being more or less embedded in the material
of the hose, all the parts being thus firmly locked together and to the hose.
I do not restrict my invention to the specific details herein presented in as
much as many changes in form, proportion and combination of parts may be
resorted to without departing from the spirit and scope thereof.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is: : -
In hose fittings or like joint connecting apparatus:-
1. In a device of the kind described, the combination with a clamp having
portions adapted to be brought together about the hose to be clamped of one or
more wedge shaped members adapted to be acted upon by and during the said
clamping operation to cooperate with the clamp in compressing the hose, sub-
stantially as described.
2. A fitting, comprising an inner member to fit within the hose, a clamp to
embrace the hose between it and said inner member, an outer leg member, locked
to said inner member at its outer end beyond the hose, and extending against
the hose beneath and between the ends of said clamp, and provided with means
to maintain it in its said position and prevent it from moving longitudinally
of the clamp or the clamp transversely of it, substantially as described.
3. A fitting, comprising inner and outer cooperating parts, said parts being
adapted to receive the hose between them and being interlocked at their outer
ends beyond the hose, said outer part being formed in one piece including a

page_text: collar to fit around the inner member and a plurality of legs extending from
said collar lengthwise of the hose, and an independent clamp overlapping said
legs, substantially as described.
4. A fitting, comprising a thimble, a wedge member and a clamp, ɛaid wedge
member being wedge-shaped in cross section and adapted thereby to impart
a radial pressure to the hose by the tightening of the clamp, substantially as
described.
-
5. A clamp comprising a plurality of members, and including a wedge-shaped
member adapted to lie longitudinally of the hose and tapering off on each side,
and clamping means overlapping said, tapering sides, clamping movement of
said means acting against said wedge-shaped member to press it radially inward,
substantially as described.
6. A fitting, comprising inner and outer cooperating parts, said parts being
adapted to receive the hose between them, and being provided at their outer ends
beyond the hose with an interlocking bayonet joint, said outer part having one
or more legs extending lengthwise of the hose, and an independent clamp over-
lapping said legs to clamp the legs against the hose and thereby clamp the hose
immovably between said cooperating inner and outer parts, substantially as
described.
11
201
1
1000
WM. BROOKES & SON,
55 & 56, Chancery Lane, London,
Agents for the Applicant.