Improvements in or relating to Bearings for Propeller and other Shafts.
Year: 1897

page_text: Date of Application, 13th Nov., 1897
Complete Specification Left, 9th July, 1898-Accepted, 13th Aug., 1898
PROVISIONAL SPECIFICATION,
Improvements in or relating to Bearings for Propeller and other
Shafts.
I, JAMES TETLOW WOOD, of 4, Hartington Terrace, South Shields, in the County
of Durham, Engineer, do hereby declare the nature of this invention to be as
follows:-
My invention relates to bearings or thrust blocks for propeller and other shafts
and has for its object to provide a means whereby the thrust blocks or other bear-
ings may be kept cool without the disadvantages occasioned by the methods at
present in use such as rust and corrosion where the cooling water comes into con-
tact with the shaft or bearings or parts of the thrust carriage; or where the
extensive use of lubricants and the use of a large number of thrust collars upon
the shaft is necessitated.
According to my invention I provide a cold water circulating system consisting
of pipes or chambers arranged in that part of the bearings or bearing carriage
which contains the lubricant, in which latter the shaft or the collars upon same
are immersed to a suitable depth.
In one arrangement the cold water, from the sea or other source as the case may
be, is brought to a pipe passing in at one end of the bearing carriage and thence
sinuously from one side of the carriage to the other through the lubricant and in
the space between each bearing surface and between the collars upon the shaft and
then out at the other side or otherwise where convenient the waste water being
discharged into the bilge or where desired.
The pipes may be bent so that two or more turns of the pipe may come between
each bearing and they may be arranged one above the other vertically or side by
side horizontally or grouped in any desired form according to the space at com-
mand; and to enable them to be grouped close together where necessary each pair
or group is joined at the ends by caps of suitable form and dimensions so arranged
as to provide a continuous flow of cooling water through the pipes.
I may in some cases specially construct the thrust carriage or bearings and
provide them with suitable circulating chambers passing between the bearings or
collars in a similar manner to the pipes and having partitions or diaphragms
arranged to produce the proper circulation of the cooling water, or I may arrange
a water chamber at each side of the bearing carriage connected by pipes passing
from one to the other and having suitable divisions for controlling the passage of
the water if desired. The supply and outlet are connected and arranged in any
convenient manner.
By the above described arrangement of cooling pipes or chambers it will be seen
that the lubricant in which the collars of the shaft are partly immersed is kept
cool by the circulation of the water in the pipes or chambers and through the
coolness of the lubricant the heating of the bearings is prevented and at the same
time great economy in lubricant is gained.
Dated this 12th day of November 1897.
PRYOR & HARVEY.
Agents,

page_text: Improvements in or relating to Bearings for Propeller and other
Shafts.
I, JAMES TETLOW WOOD, of 4, Hartington Terrace, South Shields, in the County
of Durham, 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 bearings or thrust blocks for propeller and other shafts
and has for its object to provide a means whereby the thrust blocks or other bear-
ings may be kept cool without the disadvantages occasioned by the methods at
present in use such as rust and corrosion where the cooling water comes into con-
tact with the shaft or bearings or parts of the thrust carriage; or where the
extensive use of lubricants and the use of a large number of thrust collars upon
the shaft is necessitated.
According to my invention I provide a cool water circulating system consisting
of pipes or chambers arranged in that part of the bearing or bearing carriage
which contains the lubricant in which latter the shaft or the collars upon same
are immersed to a suitable depth.
I will now describe my invention in reference to the accompanying drawings
in which Figs. 1, 2 and 3 are respectively sectional elevation, plan and cross
sectional view of a thrust carriage having my invention applied thereto in the form
of circulating pipes. Figs. 4 and 5 are respectively sectional elevation and plan
of a thrust carriage formed with chambers instead of pipes and Fig. 6 is a plan of
a modified arrangement of circulating pipes and chambers.
Referring to the arrangement shown in Figs. 1, 2 and 3 the cold water from the
sea or other source as the case may be, is introduced by a pipe P which passes
in at one end of the bearing carriage C and then sinuously from one side of the
interior of carriage C to the other through the lubricant Land in the spaces bb
between each bearing surface of the horse shoe shaped thrust bearings B and
between the collars ss upon the shaft S, the pipe then passes out at the other side
of the carriage as at c or otherwise where convenient the waste water being dis-
charged into the bilge or where desired.
The pipes may be bent as shown so that two or more turns PP may come
between the collars and they may be arranged one above the other vertically as at 2/2
or they may be grouped in any desired form and number according to the space
at command. To enable them to be grouped close together where necessary each
pair or group is joined at the ends by caps of suitable form and dimensions as at
they being so arranged as to provide a continuous flow of cooling water through the
pipes.
I may in some cases specially construct the thrust carriage or bearing and
provide it with suitable circulating chambers P¹ as at Figs. 4 and 5 these passing
between the collars s in a similar manner to the pipes P. The said chambers P
are or may be provided with central diaphragms arranged to produce and secure
the proper circulation of the cooling water, or the admission chambers P2 P² formed
in one with and arranged at the side of carriage C may be arranged to connect the
chambers P¹ P¹ alternately, directing the cooling water as shown by the arrows or
in other suitable manner so that the water passes in at one end and out at the
other after having passed through the series or a section of the series of chambers
referred to or I may arrange at each side of the bearing tarriage C water
chambers F F as in Fig. 6 cast upon or in the side of the carriage C and having
covers such as f* for cleaning purposes. The chambers F F are connected by pipes

page_text: C
passing from one to the other so that the water enters from the pipe P into one
chamber F and then passes through the pipes pp direct into and out by pipe
from the chamber F1 opposite as in Fig. 6. It will be obvious that by inserting
suitable partitions as shown dotted at f the water may be directed in a sinuous
course before it leaves the carriage. The supply of water to and outlet from the
circulating and cooling system are connected and arranged in convenient and
suitable manner by the aid of pipes and suitable cocks or valves such as q Fig. 2
are provided for regulating the How.
By the above described arrangement of cooling pipes or chambers it will be seen
that the lubricant in which the collars of the shaft are partly immersed is kept
cool by the circulation of the water in the pipes or chambers and through the
coolness of the lubricant the heating of the bearings is prevented and at the same
time great economy in lubricant is gained.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what
claim is:
-
1. The improvements in or relating to bearings for propeller and other shafts
comprising the combination with the shaft or shaft and collars thereon of a thrust
carriage or bearing adapted to receive the lubricant in which the collars or the
shaft are partly immersed, and provided with cold water circulating pipes passing
into the thrust carriage or bearing and through the lubricant substantially in the
manner set forth.
2. The herein described construction of thrust carriage or bearing having cold
water circulating chambers cast upon or in the base thereof or in that part adapted
to receive the lubricant into which latter the collars of the shaft or the shaft itself
are immersed for a suitable distance substantially in the manner and for the pur-
poses set forth.
3. A thrust carriage or bearing for propeller or other shafts having side cham-
bers such as F or 12 connected to a similar chamber or chambers in the opposite
side of the carriage by a pipe or pipes or a series of pipes or chambers cast or
otherwise formed in the base of the bearing or carriage or that part containing
the lubricant all arranged and adapted for operation substantially in the manner
and for the purposes set forth.
4. The several arrangements and constructions of thrust carriages or bearings
for propeller and other shafts substantially as herein described and shown.
Dated this 4th day of Tel-- 1000
Dated this 4th
h day of July
1000
For the Applicant,
PRYOR & HARVEY,
Agents,
3, St. Nicholas' Buildings, Newcastle-on-Tyne.