Improvements in Linings for Bearings and other Rubbing Surfaces.
Year: 1892

page_text: Date of Application, 15th June, 1892-Accepted, 23rd July, 1892
COMPLETE SPECIFICATION.
Improvements in Linings for Bearings and other Rubbing Surfaces.
I. KILLINGWORTH WILLIAM HEDGES of 6 Storey's Gate, Westminster, in the
County of London, 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 :-
For lining bearings and other rubbing surfaces, compounds consisting mostly
of plumbago or other form of carbon, mixed with other ingredients such as fibres,
drying oils, tar sugar or other agglutinating substances, have been proposed to be
used.
My invention relates to the manufacture and fixing of such linings as I will
explain referring to the accompanying drawings which illustrate various applications
of my invention. The composition which I prefer to employ is that described in
my previous Specification No. 11332 of 1889 which is now known by the name of
carboid, but other known compositions may be employed. In order to fix such
linings to the surface of iron or other metal which need not be bored, turned or
faced, I prepare a putty consisting of finely pulverised carbonaceous matter, such
as graphite or lamp black mixed with tar, and I employ this putty as a cement
placing a layer of it between the lining and the metal surface and pressing the two
parts together, after which I subject the whole to a moderate heat sufficient to
drive off the volatile ingredients of the cement.
In compounding the cement, other agglutinating substances besides tar may be
employed, such for instance as sugar or silicate of soda.
Fig. 1 is a section shewing the lining L applied to the face of a slide valve. It
may be secured against shifting by screws as shewn.
Figs. 2 and 3 are sections shewing the lining L applied to an eccentric strap,
and to the head of a connecting rod, respectively.
Fig. 4 shews the lining L applied to the bearing for the journal of a pulley, and
Fig. 3 shews it applied to a stuffing box.
Fig. 6 shews the lining applied as facings for a sluice valve.
Fig. 7 is a longitudinal section and Fig. 8 is a transverse section of the bearing
for a propeller shaft having strips of the lining material L applied instead of wood,
water channels being as usual left between the strips.
Figs. 9 and 10 shew two forms of linings L applied to axle boxes instead of the
upper brasses.
Fig. 11 shews carbon or carboid attached by the same cement to a metallic
conductor so as to operate as a rubber or collector for a commutator.
Fig. 12 is a longitudinal section of a sleeve bearing for a shaft lined with
carboid, shallow recesses for the cement being formed in the interior of the sleeve,
or they might be in the exterior of the carboid lining L.
In like manner, other surfaces subject to rubbing and wear in engines and
machines generally may be faced with carboid cemented to them as I have
described.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
A bearing for a journal or other rubbing surface consisting of a metal body
having a lining or facing of carboid or equivalent material cemented thereto by

page_text: putty consisting of carbonaceous material and tar or other suitable agglutinating
substance applied and baked, substantially as herein described.
Doted this 15th day of June 1892
ABEL & IMRAY,
Agents for the Applicant.