Improvements in Anti-friction Compositions for Bearings and other purposes.
Year: 1892

page_text: Date of Application, 14th Dec., 1892
Complete Specification Left, 12th Sept., 1893-Accepted, 21st Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Anti-friction Compositions for Bearings and other
purposes.
I, HERBERT FREDERICK HÖVELER of 3 Stockwell Avenue, London S.W.
Merchant do hereby declare the nature of this invention to be as follows:-
I make a combination of fibrous matter and metal in the following way and have
found that the compounds so obtained are invaluable for preventing friction in
stuffing boxes and rolling parts of machinery.
1 employ for my invention pulverized white metal, asbestos powder and for some
purposes graphite and I have found the following proportions to give excellent
results;
About 30% asbestos powder
About 70% pulv. white metal
For packing rings and segments and
About 30% asbestos powder
°
About 20% graphite powder
About 50% pulv. white metal
For bearing shells, foot steps, bushes etc,
After having thoroughly mixed these ingredients I add about 10% tannic acid
and pour the whole mixture into a hot solution of ordinary animal glue and stir it
thoroughly.
The tannic acid will transform the glue into a tough, sticky cement, no more
soluble in water and turning the mixture into a mouldable paste, which is freed
from any glue or tannic acid in excess by washing it in hot water.
As long as the paste is hot it will remain mouldable and can be pressed in any
shape or form desired.
The pressed bearing shells, bushes etc. after having been dried for some days in
the open air are exposed to an equal heat of about 250° Fahrenheit for some
hours.
They then will become as hard as any real metal and when polished also obtain
a bright metallic lustre.
The anti-frictional properties of these compounds are greater than those of white
metal and the first named composition should especially be used for steam, hydraulic
and other packing.
The rings or segments made from it should be boiled with tallow, so that the
hard, slightly porous compound is thoroughly soaked with it.
The second composition with graphite in it is entirely of another character.
It is self lubricant and must be used without any oil or water.
The bearing shells are simply inserted in the blocks and after a few minutes of
running the surface of the shells as well as of the shafts, axle etc. will become
wonderfully smooth and I have found that such bearings can be used under heavy
pressure and that they give better results than ordinary oiled pillow blocks.
Dated this Thirteenth day of December 1892.
URDURD
ILEתחותמגז
HÄYRE

page_text: COMPLETE SPECIFICATION.
Improvements in Anti-friction Compositions for Bearings and other'
purposes.
I HERBERT FREDERICK HÖVELER Manufacturer of Metallic Alloys of
3 Stockwell Avenue, London S.W. 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:-
I make a combination of fibrous matter and metal in the following way and have
found, that the compounds so obtained. are invaluable for preventing friction in
stuffing boxes and rolling parts of machinery.
I employ for my invention pulverized' white metal; asbestos powder or any other
fibrous material and for some purposes also graphite and I have found the following
proportions to give excellent results :.
About 30% asbestos powder
About 70% pulv. white metal
For packing rings and segments and
About 30-asbestos powder.
About 20% graphite powder
About 50% pulverised white metal,
For bearing shells, foot steps, bushes etc..
After having thoroughly mixed these ingredients, I add about 10% tannic acid,
& pour the whole mixture into a hot solution of ordinary animal glue, & stir it
thoroughly.
The tanuic acid will transform the glue into a tough, sticky cement no more
soluble in water, & turning the mixture into a mouldable paste, which is freed from
any glue or tannic acid in excess, by washing it in hot water..
As long as the paste is hot, it will remain mouldable, and can be pressed into any
shape or form desired..
The pressed bearing shells, bushes etc., after having been dried for some days, in
the open air, are exposed to an equal heat of about 250 degs. Fahrenheit, for some
hours.
They then will become as hard as any real metal, & when polished, also obtain a
Bright metallic lustre.
The anti-frictional properties of these compounds are greater than those of white
metal, and the first named composition, should especially be used for steam,
hydraulic & other packing.
The rings or segments made from it must be boiled with tallow, so that the hard,
slightly porous compound is thoroughly soaked with it..
The second composition with graphite in it, is of entirely another character..
It is self-lubricant, & must be used without any oil or water.
The bearing shells are simply inserted in the blocks, and after a few minutes of
running, the surface of the shells, as well as of the shafts, axle, etc. will become
wonderfully smooth, and I have found that such bearings can be used under heavy
pressure, & that they give better results than ordinary oiled pillow blocks.
Having now particularly described and ascertained the nature of my said inven-
tion, & in what manner the same is to be performed, I declare that what I
claim is :
An improved anti-friction composition for the purposes specified, manufactured
out of metal and fibrous matter, and in the way substantially as described.
HERBERT FREDERICK HÖVELER..