Propeller Shaft Pliable Metal Sleeve.
Year: 1896

page_text: Date of Application, 7th Dec., 1896
Complete Specification Left, 7th Sept., 1897-Accepted, 9th Oct., 1897
PROVISIONAL SPECIFICATION.
Propeller Shaft Pliable Metal Sleeve.
CHARLES DENTON HOLMES Hull Engineering Works Hull Engineer do hereby
declare the nature of this invention to be as follows:-
My invention consists in the application of a pliable or a flexible metal sleeve
or covering round the shaft between the usual forward and after working brass
liners on same-the said brass liners being reduced in diameter at inside ends,
so that sleeve may overlap. same at these ends, thus keeping the water from
coming in contact with the body of the shaft, or the inner ends of brass liners.
I preferably use sheet or specially rolled lead, or pliable alloy, which I wrap
round the shaft, prefrably in one length, between the brass liners and overlapping
same about one inch or more, soldering or hooping the said overlaps so as to make
them watertight.
I preferably make the circumferential size of sleeve larger than the circum-
ference, so that I can make an overlap joint, which I either solder or double
ever longitudinally, my object being to make this joint watertight, at the same
time to form a longitudinal bar which when placed at the bottom, enables shaft
to slide through stuffing box neck ring, without the body of the sleeve sliding on
the same. In large shafts I may use more than one longitudinal bar.
My invention enables me to protect the shaft between the working liners from
water contact thus doing away with corrosion and galvanic action and a further
advantage, is that it enables the shaft to be examined if thought fit, by making
cuttings or incisions in the sleeve, the same after examination can be turned
down and soldered over again and made watertight.
Dated this 5th day of December 1896.
CHARLES DENTON HOLMES.
Propeller Shaft Pliable Metal Sleeve.
I, CHARLES DENTON HOLMES, of the Hull Engineering Works, Hull, 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 consists in the application of a pliable or flexible metal sleeve
or covering to a marine propeller shaft between the usual forward and after brass
liners on same, for the purpose of providing a more ready means for effectually
keeping the water from coming in contact with the body of the shaft or the inner
ends of the brass liners.

page_text: to:-
In the accompanying sheet of explanatory drawings to be hereinafter referred
Figure 1 is an elevation of a propeller shaft fitted with the usual brass liners
and also with my pliable or flexible sleeve, the said liners and sleeves being in
section.
Figure 2 is a cross section through the line a b Figure 1.
The inside ends of the brass liners A A' are reduced in diameter, in order that
the adjacent ends of the sleeve B may overlap them as illustrated. The sleeve B,
I form from rolled sheet lead or from other pliable metal or alloy, which I wrap
round the shaft between the brass liners A A¹, with an over-lap of about one inch
or more, on the reduced ends of the liners. Such over-lapping ends I hoop or
solder to make water-tight joints.
The width of the metal forming the sleeve B, is preferably somewhat greater
than the circumference of the shaft C, to provide an over-lapping joint as B' which
is made water-tight preferably by soldering. Such overlapping joint B also
forms, when placed at the underside of the shaft, a longitudinal bar upon which
the shaft can be caused to slide through the stuffing box neck ring without the
body of the sleeve sliding thereon.
Instead of an overlapping joint as hereinbefore described, I sometimes make the
width of the sleeve equal to the circumference of the shaft around which it is
wrapped; the edges of the sleeve will then butt together and make a water-tight
joint by soldering.
For larger propelled shafts I sometimes make the pliable sleeve B from two or
more strips of metal, thus forming two or more over-lapping joints and longitu-
dinal sliding bars such as 13, or I sometimes use one strip of metal with the
over-lapping joint as B₁ but having one or more raised sliding bars as 132 133
soldered on or formed with the strip when being rolled.
My invention enables me to protect the shaft between the liners A A¹ from
water contact, thus avoiding corrosion and galvanic action, and it also permits
of examination of the shaft if required, by incision of the pliable metal sleeve,
such incision being subsequently closed up and made water-tight by soldering.
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
1. A pliable metal sleeve for a marine propeller shaft formed by wrapping
and jointing a sheet or sheets of such metal around the shaft, substantially as
and for the purposes described.
2. The combination with a marine propeller shaft C having brass liners A A¹,
of a pliable metal sleeve B formed and arranged substantially as and for the
purposes described and as illustrated.
Dated his Ch de of Condobon 1007
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicant.