Improved Rust and Acid Proof Paint.
Year: 1891

page_text: Date of Application, 21st Nov., 1891-Accepted, 6th Feb., 1892
COMPLETE SPECIFICATION.
Improved Rust and Acid Proof Paint.
I, RUDOLF LENDER of 101, Königgrätzerstrasse, Berlin in the German Empire,
Captain in the Imperial German Navy, do hereby declare the nature of this
invention and the manner in which the same is to be performed to be particularly
described and ascertained in and by the following statement:-
My invention relates to an improved rust proof paint for metals and other
materials said paint being acid proof, weather proof and is not injuriously effected
by heat or cold.
When applied to sheet iron the paint remains intact even when the said sheet
iron is subjected to continuous heating, water in cold or in boiling condition has no
effect on the paint and the same is the case with aqueous acids, alkalies and
ammonia hydro chloric acid vapor or sulphurous ammonia vapors.
Iron and other metallic apparatus for instance such as used in laboratories
painted with my paint are securely protected against all effects of the acid
vapors even at high temperatures. Rusty objects painted with the paint are
preserved and what is perhaps of the greatest importance is that the paint is
absolutely poisonless.
The paint can be employed to excellent, hitherto unexampled advantage for iron
roofs, bridges, carrier beams, columns, railings, windows, hothouses, water pipes and
reservoirs, cooling vessels or rooms, pressure pipes for breweries, gas stoves, water
and steam heating apparatus, stoves, ranges, gas receptacles, purifiers, pipes and the
like, urinals, warm and hot water boilers, also as protection against furring or
primage for implements and buildings for chemical factories, iron constructions
submerged in salt water iron ships and other purposes.
The principal ingredient of my improved paint consists of a silicate of iron found
in natural state in so called nests or deposits in the neighbourhood of iron ore, in
veins in mines or near granite discntegrated by exposure to the air. The
component parts of the mineral compound are about as follows although it will be
evident that the percentage of the various materials can vary without in any way
departing from the nature of my invention.
Silicic acid
Phosphoric acid
Oxyd of iron
Alumina
Calcium
Magnesia
5.40
0.05
- 88-65
0.50
1.75
1.35
2:30
Various admixtures
This silicate of iron is either used in the state of a fine powder as found or, if
consistent or lumpy can be pulverised in any appropriate mill. The finely
pulverised silicate of iron is mixed with ozonised or otherwise oxidised linseed oil
or varnish or other suitable binding material which will retain its elasticity in
cold and heat and is not affected by acids the mass being ground or triturated so as
to form a mass of thick pulpy condition.
When the mass is to be used as paint the same is thinned with good linseed oil
to which if desired siccative or litharge can be added. The color of the paint is
usually of a dark drab with metallic lustre but it will be evident that other colors
can be produced by adding suitable colors but I prefer to use the genuine paint as
ground paint and if requisite paint of other colors applied to the same.
Di 11

page_text: In order to produce the above named mass the following proportions can be
employed.
100 lbs. of the powdered silicate of iron is mixed with about 25 lbs. of ozonised
linseed oil or varnish the ingredients then being passed through a suitable mill or
-triturated until they form a thick pulpy mass which can be filled into tins or other
vessels until required for use.
In order to produce a rust and acid proof paint of good covering quality I mix
about 100 lbs. of the prepared pulpy mass above mentioned with preferably from
25 to 50 lbs. of ozonised linseed oil, varnish or other binding material, pass the
same through an appropriate mill, or triturate the same until an intimate mixture
has been attained when my improved paint is ready for use although it will be
evident that in the first case so much ozonised linseed or other oil or varnish can be
mixed with the silicate of iron that the same can be used at once.
Having now particularly described and ascertained the nature of my said
invention and the manner in which the same is to be performed I declare that
what I claim is :
1. An improved article of commerce in form of a rust and acid proof paint
composed of a silicate of iron and a suitable binding material substantially as
described.
2. The manufacture of a rust and acid proof paint from silicate of iron and a
binding material substantially as described.
L
וה
11001
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.