Improved Means for Preventing the Overheating of Journal and other Bearings.
Year: 1894

page_text: Date of Application, 12th Dec.. 1394
Complete Specification Left 11th Sept., 1895-Accepted, 12th .Oct., 1895
PROVISIONAL SPECIFICATION.
Improved Means for Preventing the Overheating of Journal and
other Bearings.
1, GEORGE AUGUSTUS MOWER, of 75 Queen Victoria Street, in the City of
London, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to improved means for preventing the overheating of
journal and other bearings, and is chiefly designed for use in connection with the
driving-shafts of fans which are used in flues or other highly heated passages or
spaces.
For this purpose, according to one method, I construct the bearing with a
water-jacket or jackets in such a manner that the water can be circulated in close
proximity to the surfaces in frictional contact with each other.
According to another method I form a water-jacket in a sleeve or the like
which surrounds the shaft in close proximity to the journal-bearing or between the
same and the source of heat.
In carrying my said invention into practice I preferably form the lower part or
base and the cover or cap of the bearing with separate jackets or internal chambers
provided with inlet and outlet apertures for the water or other cooling liquid, the
said liquid entering the jacket or chamber in the lower part or base, passing
through the same, and being conducted to the jacket in the cover or cap by one or
more suitable connecting pipes, and then passing through the jacket in the cover
or cap and leaving the same by the outlet pipe or aperture. Ör the cooling liquid
may enter the cover or cap and be conducted thence through the lower part or
base of the bearing. Or, if desired, the cooling liquid may be separately circulated
through the base and the cap or cover of the bearing respectively.
In order that the two halves of the bearing may be readily taken apart for
cleaning, inspection or other purposes, the connecting pipe between the jackets
and, if desired, also the liquid supply and waste pipes, are connected to the
separable halves or portions of the bearing by means of suitable detachable unions
so that the joints may be very readily made and broken and the cap or cover lifted
when necessary.
I have found that my improvements may be very advantageously applied to
bearings which are lined with anti-friction metal which has been cast or run into
an outer shell, as, in this case, a better thermally conductive path is provided
between the rubbing surfaces and the cooling liquid in the jackets.
It is obvious that my improvements may also be applied to bearings formed
with separable steps or bushes, or to other forms of bearing, and that it may be.
employed in cases where the heat is produced by friction or otherwise.
Dated the 19th day of December 1894.
D. YOUNG & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicaut.

page_text: Improved Means for Preventing the Overheating of Journal and
other Bearings.
I, GEORGE AUGUSTUS MOWER, of 75 Queen Victoria Street, in the City of
Londou, Engineer, 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 improved means for preventing the overheating of
journal and other bearings, and is chiefly designed for use in connection with the
driving-shafts of fans which are used in fines or other highly heated passages or
paces. My improvements are, however, also applicable to bearings in which it
is desired to convey away the heat produced by friction.
For this purpose, according to one method, I construct the bearing with a
water-jacket or jackets substantially in the manner hereinafter described, so that
the water can be circulated in close proximity to the surfaces in frictional contact
with each other, without touching such surfaces.
According to another method I form a water-jacket in a sleeve or the like which
surrounds the shaft in close proximity to the journal-bearing or between the same
and a source of heat, such, for example, as a boiler or other flue, so that the heat
will not be conducted to the said bearing.
In the accompanying drawings:
Figure 1 is a side elevation, and
Figure 2 a plan of one form of my improved bearing.
Figure 3 is a vertical longitudinal section on the line a, a, Figure:2.
Figure 4 is an end elevation partly in vertical transverse section on the dine a', ',
Figure 2.
Figure 5 is a horizontal section on the line 23, x², Figure 4.
Figure 6 is a longitudinal section, and
Figure 7 a transverse section showing another form of bearing having my
improvements applied thereto.
Figures 8 and 9, 10 and 11, and 12 and 13 are similar views respectively,
illustrating the application of my improvements to bearings of other construction.
Figure 14 is a vertical central section showing a footstep-bearing having my
improvements applied thereto.
Figure 15 is a side elevation, partly in vertical longitudinal section, illustrating
a further modification of 'my said invention.
Referring to Figures 1 to 5, A is the lower casting or pillow-block of the
journal-bearing and B is 'the upper casting or cover thereof.
The pillow-block A and 'the cover Bare formell with separate internal chambers
or jackets a, b, provided with inlet and outlet apertures c, d, e, f, for the water or
other cooling liquid, the aperture d of the chamber a being connected to the
aperture e of the chamber b by a 'pipe g. These parts are so arranged that the
cooling liquid supplied through the pipe ch will enter the chamber or jacket a at
the aperture c in the pillow-block-A and, after circulating through the said jacket,
will pass out through the aperture d, wheuce it will be conducted by the connecting
pipe g and aperture e'to the jacket b in the cover B, leaving the latter by the outlet
aperture and discharge-pipe f¹. Or, if preferred, the parts may be so arranged
that the cooling liquid will first enter the cover B and will be conducted thence to
and through the pillow-block A. Or, if desired, the cooling liquid may be
circulated through the said pillow-block and through the said cover separately.

page_text: The brasses or boxes E of the bearing, in contact with the shaft or journal D,
are formed of any suitable anti-friction metal which is east or run into the inner
shells of the castings A, B, the latter being suitably shaped to receive the said
metal; in this manner a good thermally conductive path is provided between the
ubbing surfaces and the cooling liquid in the jackets a, b.
In order that the cover B of the bearing may be readily removed for cleaning,
inspection or other purposes, the connecting pipe between the jackets or
chambers a, b, and, if desired, also the supply and discharge pipes, c¹ and f', are
connected to the pillow-block and cover respectively by means of unions
couplings so that the joints may be very readily made and broken and the cover B
lifted when necessary.
or
The bearing is pivotally mounted in a chair C so as to turn about a bolt or pin C¹
passing through a hole in an extension A' of the pillow-block A.
The lubricant is introduced through the aperture F whence it passes along the
shaft to passages ; at either end leading to an oil-chamber in the pillow-block A.
From this chamber the lubricant is again raised to the rubbing surfaces by means
of brushes passing through holes in the pillow-block A. A removable plug k¹ is
provided for drawing off the waste oil when necessary.
In Figures 6 and 7 I have shown my improvements applied to a bearing in which
the lubricant is returned to the rubbing surfaces by rings n loosely encircling the
shaft or journal D at the ends of the bearing. In this arrangement the lower
casting or pillow-block A is extended at A to form the base of the bearing. The
provision for water-circulation is similar to that described with reference to
Figures to 5, the pipe-connections being indicated partly by full lines and partly
by dotted lines.
In the modification of my invention shown in Figures 8 and 9, the pipes c', f
and g are connected to the jackets a, b at the ends instead of at the sides of the
the bearing. This bearing is not provided with devices for returning the lubricant
to the rubbing surfaces.
Figures 10 and 11 show the application of my invention to a pivot or Seller's
plummer-block or journal-bearing, in which a pillow G and cap H are pivotally
supported in a pedestal J and cover K. The water is circulated through jackets a, b,
formed in the pillow G and cap H of the bearing, the pipes being arranged in a
similar manner to that described with reference to Figures 8 and 9.
In Figures 12 and 13 I have shown the application of my invention to the
thrust-bearing of a propeller-shaft D. In this bearing, water chambers or jackets a, b,
are formed in the base A and cap or cover B and extend throughout the length
thereof. These jackets are provided with inlet and outlet apertures c, d, e, f, and
pipes c', f, g-connected and arranged substantially as described with reference to
Figures 1 to 5, so that the water can be circulated around all the rubbing surfaces
without coming into contact therewith.
Figure 14 shows the application of my invention to the footstep-bearing of a
vertical shaft. In this case I form the base A³ of the bearing with an internal
chamber or jacket 6 through which water is caused or allowed to flow from the
inlet c to the outlet f, which are connected respectively with a supply-pipe c¹ and a
discharge-pipe fi.
It is obvious that my improvements may also be applied to other forms of bearing,
and that my improved bearings may be employed in cases where the heat to be
carried away is produced by friction or otherwise.
In Figure 15 I have shown a modification of my invention in which I provide a
separate water-jacketted sleeve L between the bearing A, B and a source of heat,
such, for example, as a boiler-flue. This sleeve surrounds the shaft D so that the
latter can turn freely in it, and the chamber or jacket a is connected with a supply-
pipe c and a discharge-pipe, as shown, so that water may be circulated through
it to convey away the heat and prevent the same from being conducted to the
.bearing.

page_text: 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
First. A journal-bearing in which the pillow or pillow-block and the cap or cover
are provided with internal chambers or jackets surrounding the rubbing surfaces,
and with suitable pipe-connections whereby a cooling liquid may be caused to
circulate through such chambers or jackets, substantially as hereinbefore described
and for the purpose specified.
Second. The improved bearing constructed with means for circulating a cooling
medium around but not in contact with the rubbing surfaces, substantially as
described with reference to either of the forms or modifications illustrated in
Figures 1 to 14 of the accompanying drawings.
Third. The modification of my invention wherein I employ, in conjunction with
a bearing, a jacketted sleeve through which a cooling medium can be circulated,
substantially as described with reference to Figure 15 of the drawings.
Dated this 11th day of September 1895.
G. A. MOWER.
D. Young & Co.,
11 & 12 Southampton Buildings, London, W.C.,
Agents for the Applicant.