IMPROVEMENTS IN COMPOSITIONS FOR THE MANUFACTURE OF BUILDING BLOCKS AND FOR USE IN BUILDING
Year: 1868

page_text: LETTERS PATENT to Louis Mummenhoff, of Saint Mary Axe, in tho
City of London, for the Invention of "IMPROVEMENTS IN COMPOSITIONS
FOR THE MANUFACTURE OF BUILDING BLOCKS AND FOR USE IN BUILDING."
- A communication from. abroad by Nicolaus Schroder, of
Creuznach, Rhenish Prussia.
Scaled the 21st July 1868, and dated the 15th February 1868.
PROVISIONAL SPECIFICATION left by the said Louis Munimenhoff.
at the Office of the Commissioners of Patents, with his Petition,
on the 15th February 1868.
I, LOUIS MUMMENHOFF, of Saint Mary Axe, in the City of London,..
do hereby declare the nature of the said Invention for "IMPROVEMENTS.
IN COMPOSITIONS FOR THE MANUFACTURE OF BUILDING BLOCKS AND FOR USE IN
BUILDING," to be as follows:-
This Invention has for its object improvements in compositions for
the manufacture of building blocks; and for use in building. For this
purpose I combine together ashes of coal and coke and Portland cement
or Roman cement, or other similar cement, and I also combine with
the mixture other materials varying according to the purpose for which

page_text: the block or composition is required. Thus for use out of doors and
in massive structures I employ ashes of coal or coke, cement, slag, lime,
and waterglass.
For use inside buildings, as for fireproof arches and for other
purposes, I use ashes of coal or coke, cement, slag, and lime
without waterglass. For use inside buildings for lighter purposes
I use ashes of coal and coke, slag, and lime. For use in structures
'exposed to water, for building cellars and for similar purposes, I use
ashes of coal or coke, cement, slag, lime, and river sand. The prepared
materials may also be used for flooring.
The ashes and coment max conveniently he mixed in the following
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Louis Mummenhoff in the Great Seal Patent
Office on the 15th August 1868.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, LOUIS
MUMMENHOFF, of Saint Mary Axe, in the City of London, send
greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Fifteenth day of February, in the year
of our Lord One thousand eight hundred and sixty-eight, in the
thirty-first year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Louis Mummenhoff, Her special
licence that I, the said Louis Mummenhoff, my executors, adminis-
trators, and assigns, or such others as I, the said Louis Mummenhoff,
my executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter
during the term therein expressed, should and lawfully might make,
use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for

page_text: "IMPROVEMENTS IN COMPOSITIONS FOR THE MANUFACTURE OF BUILDING BLOCKS.
AND FOR USE IN BUILDING," a communication to me from abroad by
Nicolaus Schroder, of Creuznach, Rhenish Prussia, upon the condition
(amongst others) that I, the said Louis Mummenhoff, my exccutors
or administrators, by an instrument in writing under my, 'ör their, or
one of their hands and seals, should particularly describe 'and' ascertain
the nature of the said Invention, and in what manner the same was
to be performed, and cause the same to be filed in the Great Seal.
Patent Office within six calendar months next and immediately after
the date of the said Letters Patent.
NOW KNOW YE, that I, the said Louis Mummenhoff, do hereby
declare the nature of the said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained
in and by the following statement thereof, that is to say :-
This Invention has for its object improvements in compositions for
the manufacture of building blocks; and for use in building. For this
purpose I combine together ashes of coal and coke, and Portland cement
or Roman cement, or other similar cement, and I also combine with
the mixture other materials varying according to the purpose for which
the block or composition is required. Thus for use out of doors and
in massive structures. I employ ashes of coal or coke, cement, slag,
lime, and waterglass.
For use inside buildings, as for fireproof arches and for other
purposes, I use ashes of coal or coke, cement, slag, and lime
without waterglass. For usc inside buildings for lighter purposes
I use ashes of coal and coke, slag, and lime. For use in structures
exposed to water, for building cellars and for similar purposes, I use
ashes of coal or coke, cement, slag, lime, and river sand. The prepared
materials may also be used for flooring.
The ashes and cement may conveniently be mixed in the following
proportions:-
100 cwt. of ashes of coal or coke slags;
16
"
1
دو
وو
"
The materials are mixed
then rammed into moulds.
hydraulic cement or lime;
Roman or Portland cement.
or worked together in a pug mill, and arc
Sand may be added more or less according
to the strength required. The blocks harden by exposure to the air;
they may be also hardened by means of waterglass; a convenient

page_text: method is to soak the blocks when- quite set and hard in a weak solution
of the waterglass.
set
my
In witness whereof, I, the said Louis Mummenhoff, have hercunto
hand and scal, this Eighth day of August, in the year of
our Lord One thousand eight hundred and sixty-eight. .