Improvements in Lubricants for Heavy Machinery.
Year: 1891

page_text: Date of Application, 3rd Mar., 1891
Complete Specification Left, 3rd Dec., 1891-Accepted, 9th Jan., 1892
PROVISIONAL SPECIFICATION.
Improvements in Lubricants for Heavy Machinery.
CHARLES HENRY RIDSDALE The Grange, Hutton, Guisboro, Yorkshire
Analytical Chemist, ALFRED JONES, Cleveland Villa, Newport Hill, Middlesbro',
Rolling Mill Manager, do hereby declare the nature of this invention to be as
follows:-
The object of this invention is to produce a lubricant especially suitable for
heavy machinery such as the necks of rolls in iron and steel rolling mills, heavy
engine shafts, axles &c.
Hitherto it has been usual to apply the lubricant by some such method as
smearing it on (which entails great waste,) or enclosing it in bags or some outer
covering permeable by the lubricant, (which necessitates the use of lubricants of
low melting points and viscosity,) in consequence of which great waste ensues,
and also the bearings are less perfectly protected from wear than by a more solid
lubricant.
We propose to use the lubricant in solid form as blocks, bars, slabs, &c., shaped
suitably to the requirements of the machinery, or as a thick grease where
preferable, and in order to obtain a lubricant which shall resist the effects of high
temperature and water, singly or combined, without undue wear, we propose to use
some ordinary form of soap, as met with in the market, or an alkali or alkaline
earth (such as ammonia, potash, soda, lime, magnesia, baryta, &c.,) or mixtures of
two or more of these bodies, in conjunction with saponifiable oils or fats, (such as
suet tallow &c.) in such proportions as to impart the necessary hardness to mixtures
of the same with animal, vegetable, mineral, oils or fats, or with tar or its products,
or with mixtures of any of the above with solid bodies, (such as black-lead, sulphur,
mica &c.).
For the harder form of lubricant the following will illustrate the kind of
mixture:
Lime or magnesia
Ordinary soap
Rended suet
Fine black-lead
Suet cut.up in cubes
4 to 7 parts.
10
"
98
"
28
"
28
"
For the softer form of lubricant the following will illustrate the kind of
mixtur

page_text: COMPLETE SPECIFICATION.
Improvements in Lubricants for Heavy Machinery.
We, CHARLES HENRY RIDSDALE, of The Grange, Hutton, Guisborough, and
ALFRED JONES, of Cleveland View, Newport Hill, Middlesborough, both in the
County of York, Analytical Chemist and Rolling Mill Manager, respectively, 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:
The object of this invention is the production of a lubricant especially suitable
for heavy machinery, such as the necks of rolls in iron or steel rolling mills, heavy
engine shafts, axles or the like.
Hitherto it has been usual to apply the lubricant by some such method as
smearing it on (which entails great waste) or enclosing it in bags or some outer
covering permeable by the lubricant (which necessitates the use of lubricants of
'low melting points and viscosity) in consequence of which great waste ensues, and
also the bearings are less perfectly protected from wear, than by a more solid
lubricant.
We make the lubricant in solid form as blocks, bars, slabs, etcetera, suitable to
the requirements of the machinery, or as a more or less solid grease, according to
consistency required. Where preferable and in order to obtain a lubricant which
will resist the effects of high temperature and water singly or combined, without
undue wear, we propose to use some ordinary form of soap, as met with in the
market, or an alkali or alkaline earth (such as ammonia, potash, soda, lime,
magnesia, baryta, etcetera), or mixtures of two or more of these bodies, in con-
junction with saponifiable oils or fats (such as suet, tallow, etcetera) in such pro-
portions as to impart the necessary hardness to mixtures of the same with animal,
vegetable, mineral oils, or fats; or with tar or its products, or with mixtures of any
of the above with solid bodies (such as blacklead, sulphur, mica, etcetera).
For the harder form of lubricant the following will illustrate the kind of
mixture:-
Lime or magnesia
Ordinary soap
Rendered suet
3 per cent.
-
6 per cent.
75 per cent,
For softer form of lubricant, the following will illustrate the kind of mixture:-
Lime or magnesia
Rendered suet
Sulphur (fine)
Black lead
33
Heavy petroleum oil
2 per cent.
45 per cent.
14 per cent.
19 per cent.
30 per cent.
A third and more simple mixture suitable for some kinds of machinery is
composed of a hard insoluble soap of lime or other alkaline earth with oil, and 4
a variable proportion of finely powdered sulphur thoroughly incorporated.
In preparing the lubricant, the alkaline earths are slaked to a syrup or used in
the dry hydrated form, and mixed with the soap or a portion of the rendered suet,
and heated till all water is driven off and combination has taken place, the
remainder of the ingredients are then added and the whole, when sufficiently cooled, 4
cast (when desired) into required shape.

page_text: Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is:
1. A lubricant composed of a hard insoluble (alkaline earth) soap mixed with
sulphur, substantially as described.
2. A lubricant suitable for heavy machinery, consisting of a mixture of hard
insoluble (alkaline earth) soap, ordinary soap, oil, and one or more solid mineral
lubricating bodies such as sulphur, plumbago or ground talc or soapstone, sub-
stantially as described and for the purposes set forth
Dated this 2nd day of December 1891.
WM. P. THOMPSON & Co.,
Of Liverpool, Manchester, Nottingham, and London, Patent Agents.