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Патент USA US2047904

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July 14, 1936.
A. c. HOLLATZ
2,047,904
FLEXIBLE CONNECT I 0N
Filed Nov. 21, 1934
INVENTOR.
?RTf/l/R C. HOLLHTZ
BY
A TTORNE Y.
Patented July 14, 1936 ’
2,047,904 '
UNITED STATES PATENT OFFICE
,1
_
_
2,041,904
FLEXIBLE common
Arthur G. Hollatz, Bloomington, Ill., assignor to
Williams Oil-O-Matic Heating Corporation,
Bloomington, llL, a corporation of Illinois
Application November 21, 1934, Serial No. ‘154,069
6 Claims. (Cl. 285-90)
This invention relates to improvements in ?ex
ible connections and more particularly to a ?ex
ible connection which may also be employed as a
resilient support.
6
‘
It is an object of this invention to provide a
device of this character which is simple and du
_'_ rable, and which may be readily used either as a
supporting medium for one of the parts to which
the connection is'applied, or may be employed
l0 merely to ?exibly connect and form a means of
the provision of a combined ?exible connection
between the bottom of the crank case of the
compressor l and the lubricant sump 5, and a
resilient support for the compressor.
In carrying out this invention, it is preferable 5
to provide the bottom of the crank case of the
compressor I with a central removable closure
6, as illustrated in Figure 2, although the crank
case may be formed integral so that the bottom
is ofvthe same general con?guration as the 010- 10
sure plate 6, with the lowest portion thereof pro
.
With these and other objects in view, reference ' vided with a drain or opening 1. It is also pref
communication between two conduits.
> is made to the accompanying sheet of drawing
which illustrates a preferred embodiment of this
15 invention with the understanding that detail
erable to provide the upper portion of the lubri
cant sump 5 with an upstanding exteriorly,
?anged member 8 having a passageway 9 there- 15
changes may be made without departing from
through preferably similar to the aperture 1 of
the scope thereof.
the compressor crank case and concentric there-.
In the drawing:
with adapted to be placed in communication with
Figure 1 is a view in side elevation with parts
20 broken away illustrating one embodiment of this
invention.
the interior of the crank case of the compressor I
by the hereinafter described ?exible connection. 20
The improved ?exible connection includes two
Figure 2 is a fragmentary enlarged detail view
partly in vertical central section and partly in
elevation of the ?exible connection and support
25 illustrated in Figure 1.
The embodiment of this invention illustrated
rated to form concentric apertures l2 and I3 of .
the same diameter as the apertures l and 9 to
receive the opposite ends of a cylindrical metallic 25
in Figure 1 includes a compressor I having a di
rect drive 2 to an electric motor 3 which is mount
ed upon a base or support 4. The particular com
30 pressor l is adapted for compressing the refrig
erant gas employed in a compression type of re
frigerating apparatus including a forced feed
lubricating system to lubricate the moving parts
of the compressor in which the lubricant collect
35 ing at the bottom of the crank casing of the com
pressor l drains therefrom into a lubricant sump
5 from which it is returned to the system by a
lubricant pump. Such a lubricant sump and lu
bricating system are employed upon a commer
40 cial refrigerating apparatus, and as the subject
matter of this invention relates to only the con
nection between the compressor crank case and
the lubricant sump, it is thought that theabove
general description is su?icient to the under
45 standing of this invention.
.
, Ina device of the character above described, it
iscustomary to mount the electric motor 3 upon
' some means interposed between it and the base
4 for absorbing the vibration when the motor is
50 operated, and as the compressor is connected di
?
rectly to the driving shaft of the motor, as by the
connection 2, it is also necessary to provide a
resilient support between the compressor and
the supporting base 4 to absorb the vibrations of
55 the compressor. This invention contemplates
spaced-apart plates l0 and II centrally perfo
expansible and contractible bellows member l4
whose ends [4a are secured to said plates as by
spinning the metal of the exterior terminations
over the exterior edges of the apertures I2 and
I3 of the plates l0 and H, or by any other desired 30
means. It is preferable to cast caoutchouc or oth
er moldable resilient composition in cylindrical
form concentric with and about the exterior of
the metallic bellows l4 between'the plates I0
and II to form a column l5 of resilient material 35
between the two plates, which is preferably rein
forced by metallic cylindrical strap "5 of less
width than the distance between the plates 10
and II to maintain the cylindrical formation of
the resilient material. As shown in Figure 2, 40
the plate In is secured to the under side of the
closure 6 by hexagon head cap screws H with
the aperture 1 registering with the bellows [4.
The base 4 is provided with a circular aperture
l8 adapted to receive and be spaced apart from 45
the ?ange 19 of the member 8 carried by and
communicating with the oil sump 5. The plate
II is bolted to the ?ange IS with the ‘aperture
9 registering with the bellows l4. The plate Ii 50
is of greater diameter than the aperture l8 and
rests upon the upper side of the base 4 and is
preferably secured thereto by cap screws 20 while
the ?ange I9 is secured to the plate II by bolts
2|. In the commercial device, it is customary to 55
2 ~
.
,
2,047,904
support the oil sump 5 by straps 22 secured to and
depending from the under side of the base 4.
From the above description, it is readily seen
that the bellows I4 forms a means of communi
cation between the interior of the crank case of
the compressor l and the lubricant sump 5 by
the bellows member I 4 forming a ?exible connec
tion between the two. The surrounding column ii
of the resilient material being interposed between
'10 the bottomof the crank case of the compressor
I and the upper side of the base 4 not only
strengthens the ?exible connection formed by the
bellows H, but also forms a shock absorber
adapted to receive and absorb the vibration
15 caused by the operation of the compressor.
It is tov be noted that'the embedding‘ of the
bellows member l4 entirely within the resilient
material not only allows the bellows member to
compress and expand, as well as to ?ex, but also
20 provides a reinforcing means for the exterior of
the ?exible portions of the bellows, whereby a
?exible connection is provided which is adapted
to withstand high internal pressures. Such a
connection is adapted to form ?exible connec-'
25 tions in high pressure pipe lines by securing the
plates l0 and II of the construction illustrated
in Figure 2 to the ?anges usually provided on
the ends of the pipes.
What I claim is:
30
-'
1. The combination with a base having an ap
erture, a hollow body rigidly supported upon the
under side thereof, and a hollow vibrating body
positioned thereabove, of a combined ?exible
connection between the interiors of said bodies
85 and a resilient support for the vibrating body,
including a cylindrical metallic bellows secured in
communicating relation to the gibrating body
and secured to the rigid body and base sur
rounded by a reinforcing body of resilient mate
rial interposed between the vibrating body and
base adapted to allow the bellows to expand and
contract and also absorb the vibrations of the
supported body.
2. The structure of claim 1, wherein'the ends
of the bellows extend through and are secured
to attaching plates, one secured to the vibrating
bodyand the other to the base and rigid body.
3. The structure of claim 1, wherein the resil
ient material is in the form‘ of a cylindrical col—
umn concentric with the bellows.
4. The structure of claim 1, wherein the ends
of the bellows extend ‘through and are secured
to attaching plates, one secured to the vibrating 15
body and ‘the other to the base and rigid body,
and wherein the body of resilient material is in
terposed between the said‘ attaching plates.
5. The structure of claim 1, wherein the ends
of the bellows extend through and are secured to 20
attaching plates, one secured to the vibrating
body and the other to the base and rigid body,
and wherein the resilient material is in the‘form
of a cylindrical column concentric with the bel
lows, with the respective ends engaging the ad 25
jacent surfaces of the respective attaching plates.
6. The structure of claim 1, wherein the ends
of the bellows extend through and are secured
to the attaching plates with one of said plates se
cured to the vibrating body and the other to the 30
base and rigid body, and wherein the resilient
material is in the form of a cylindrical column
concentric with the bellows, with the respective
ends thereof engaging the adjacent surfaces of
the respective attaching plates, and its exterior 35
surrounded by a restraining strap of less width
than the distance between said plates.
‘
ARTHUR 0. HOLLATZ.
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