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Патент USA US2404420

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Jußy 23, 1946.
2,404,420 4
Filed Jan. 5, 1944
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Patented July 23,- 1946
f 2,404,420
Phillip R. Wheeler, Alexandria, Va.
Application January 5, 1944, Serial No. 517,050
2 Claims.
(C1. 30s-235)
(Granted under the act of March 3, 1883, as
amended April 30, 1928; 370 0. G. 757)
. This invention relates to bearing assemblies and
4has particular relation to a raceway structure for
use in bearing assemblies.
l An object of the invention is to provide an
improved sheet'metal raceway structure for use
in bearing assemblies.
Another object of the invention is to provide
an improved sheet metal raceway structure for
vuse in bearing assemblies supporting radial loads
in opposite directions and thrust loads in oppo
site directions.
>A further object of the invention 1s to pro
vide an improved sheet metal raceway structure
of economical manufacture which is of sturdy„`
rigid construction and which is extremely light
lin Weight with relation to the heavy load which
it is capable of supporting.
ofthe sections I3 and I4. The opposing sides
I6 and I9 are positioned parallel to eachother
and »perpendicular to the opposing sides I'I and
I8, which are likewise positioned parallel to each
other, thereby forming a raceway of rectangular
cross-section. The sides IS, I‘I, I8 and I9, as
shown, are of approximately equal width, ‘so that
the raceway is substantially square-shaped in
Anti-friction rollers, one of which is shown at
20,l are disposed in the raceway with their axes
parallel tothe sides I6 and I9, the rollsbeing
retained in position by a roller separator 2| which
SerialinNo.a 510,908,
November of
19, 1943,
now Patent 2,349,824, issued May 30, 1944. .The
roller 20 is adapted to support the -down thrust
when a load is` applied to the section I3. A plu
rality of rollers, not shown, are disposed in the
A still further object of the invention is to pro
vide> a bearing assembly which is particularly
adapted to be protected from damage caused by 20 raceway with their axes parallel to the sides I1
and I8 for taking up the thrust when a load vis
foreign objects, rain and water, and which is
applied `to the section I4. Thus, a bearing assem
constructed to permit rapid and continuous drain
bly is provided which is capable of supporting ra
age of the race.
dial loads in both directions and thrust loads in
These-arid other objects of the invention will
be understood from the following description with 25 both directions.
A shielding apron 22, in the form of an L
reference to the accompanying drawing, in which:
shaped strip of sheet metal, is secured to the up»
„ Fig. 1 is a sectional perspective view of a bear-A
per flange |32) *ofV the section I3 by a bolt 23
ing assembly having one form of the new race
and nut 23a and is welded to an additional pro
way, and
and supporting shield 24 disposed 'out
Fig. 2 is a horizontal sectional View on the line
Wardly of and surrounding the bearing assem
2_2 of Fig. 1.
bly. In the structure as shown, the radial and
The invention is illustrated in preferred form
thrust loads are applied to the sections I3 and
suitable for use in a ring mount for a machine
I4 through the shield 24 and the apron 22. How
gun installation. The outer race ring comprises
a strip of sheet metal which is generally 3-shaped 35 ever, it will be understood that the loads may be
applied at any desired point of the bearing Vas
in cross-section with its vertical portion bent to
form a longitudinally extending, substantially V
The invention Vhas particular use in a ring
shaped race-forming channel. The bottom ilange
mount for, machine gun installations,.’where
I0a is secured to a base I I by a stud bolt I2 and
nut I2a. The inner race ring is formed of sheet 40 sturdlness and light weight are of prime impor
tance, and in which the ring mounts must be
metal and comprises a U-shaped upper section
constructed to withstand exposure to ordnance
|3- and a U-shaped lower section I4, joined at
missiles, rain and water spray. In this connec
their inner adjacent ilanges I3a and I4a by a
tion, it is desired to point out that the new
bolt I5 and nut I5a. In the form as shown, the
bearing assembly is particularly adapted to this
sections I3 and I4 are identical in shape and are
purpose. The apron 22 and the shield 24 pro
fashioned in the same die, thereby contributing
tect the bearing assembly from being struck by
to the economical manufacture of the bearing
foreign objects, such as ordnance missiles. The
assembly. The inner adjacent corners of the
apron 22 further serves to protect the bearing as
sections I3 and I4 are bent to provide a sub
stantially V-shaped race-forming channel which 50 sembly from exposure to rain and, when installed
aboard ship, from exposure to wash water and
is complementary to the channel in the V-shaped
water spray. The bearing assembly is so con
portion of the element I0. Thus, a channel or
structed that Water can enter the raceway from
raceway is provided which is defined by surfaces
the outer ring only by being forced'laterally
I6 and I'I of the V-shaped portion of the ele
ment I0 and by the flattened corners I9 and I8 55 through the space between the base plate ñange
I0a and the shield 24, then upwardly between
the outer race ring I0 and the vertical iiange of
apron 22, then passing inwardly and laterally be
tween the outwardly extending flange IUb and
bearing assembly, such as in aircraft lgun turrets.
The invention herein described may be man
ufacturedjand used by yor for the Government
of the United `States of America for governmental
purposegwithout'the payment of any royalties
the apron 22. Water can enter the raceway from
the inner ring only by being forced laterally and
outwardly through the space between the base
. thereon or therefor.
II and the lower flange I4b of the inner race
1. A bearing assembly comprising a self-con
ring I4 and then passing upwardly between the
tained raceway structure having a plurality of
outer race ring I0 and the inner race ring I4. 10 channel members of substantially uniform thick-V
In this connection, the novel structure of the
ness, one of said members of 3-shaped cross
bearing assembly permits rapid and continuous
section having a V-shaped race and adjacent
drainage, since the water washed into the race-
strengthening flanges, and at least one of said
members of» E-shaped cross-section comprising at
way is immediately drained therefromby passing
through the space between the lower portion of
the outer race ring IIJ and the lower inner racel
least two separable and interchangeable elements
of substantially U-shaped cross-section forming
ring I4.
a complementary V-shaped race with adjacent
While the invention has been described for
strengthening ñanges, Said elements being cou
use in a circular bearing supporting'anti-friction
1pled adjacent the vertex of this V-shaped race',
rollers for takingY radial loads in both direc 20 releasable coupling means for said elements to
tions and thrust loads in both directions, it will
permit easy disassembly thereof, said channel
be understood that use of the invention is not
Amembers being positioned with 'the V-shaped
limited to this >application and vthat it may be
races aligned in opposed vrelation to form a race
used to advantage in other bearing assemblies,
way of substantially rectangular cross-section,
such as those types having a straight race track 25 and anti-friction means disposed in said rectan
or those employing anti-friction ball rolls.
gular raceway whereby the bearing assembly will
While the bearing races of the present inven
freely support loads in any direction.
tion have been described as formed from rolled
2. A bearing assembly comprisinga self-con
sheet metal which may be either steel or any suit
tained raceway structure having a plurality of
able nonferrous material such as aluminum, mag
channel members of substantially uniform thick
nesium or copper base alloys, it will be apparent
„ ness, one of said members of .t3-shaped cross
that the races may be formed by extrusion and
section having a V-shaped race and adjacent
the term sheet metal is intended to include ex
strengthening flanges, and at least one of said
truded sections which may be of variable'thick
members of E-shapedA cross-section :comprising
The extrusion process is advantageous
at least two separable andinterchangeable ele
ments of substantially U-shaped cross-section
when using light alloys which must be refriger
ated after being subjected to certain types of
forming such as rolling. `The extrusion method
has the further >advantage of providing greater
flexibility in the shape and locationof that part
forming a complementary V-shaped >race -¿with
adjacent strengthening flanges, said elements be
of the raceway which attaches to either the fixed
or the rotating structure, such as is present in
ing coupled at the vertex of thisl Vv-shaped race,
releasable coupling Vmeans for said element to
permit easy Vdisassembly thereof, said channel
members being positioned with the V -shaped races
a gun turret. This is desirable where a replace
aligned in opposed relation to form a raceway
ment bearing must be adapted to lit into an
substantially rectangular cross-section, anti
existing space and be assembled with an exist 4.a friction means disposed in said rectangular race->
ing structure. It has been found that the above
way, and a shielding apron attached toV one of
described extruded sections are adaptable 4for use
said channel members, and extending-over and
Where a maximum -load-carrying capacity and
a minimum of weight are desired of the present
alongside of the other channel member.
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