Year: 1886

page_text: Date of Application, 3rd May, 1886.
Complete Left, 3rd Feb, 1887.
Complete Accepted, 4th Mar., 1887.
I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Engineer do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in the manufacture of cement and consists
essentially in the production of a certain powder which mixed with a certain liquid
forms a strong quick setting cement.
This powder consists of:-
80 °
°
10°;
of oxide of zine
of minium
5°/
о
о
of vellow ochre
of plumbago.
To mix these ingredients to perfection it is preferable to mix the minium, yellow
ochre and plumbago thoroughly first and then add this to the oxide of zinc.
The liquid consists of:-
с
99 of chloride of zine
1° of perchloride of iron.
The cement is used as follows:-At the moment of application the powder is mixed
with sufficient liquid to render the cement of the consistency of common putty.
The surfaces to which the cement is to be applied must be thoroughly well cleaned
and moistened with the solution before the application.
This cement will set in about 30 seconds and adheres strongly to wood, glass or
metal; it is also impermeable to water.
It can be used with excellent results in most cases where an instantaneous stoppage
is required such as leakages in gas pipes, barrels tanks and reservoirs even with an
inner pressure of two or three atmospheres.
After two days it is so hard that it will scratch glass and after 5 minutes it cannot
be scratched with the finger nail.
I do not bind myself to the precise proportions given above.

page_text: statement :-
This invention relates to improvements in the manufacture of cement and consists
essentially in the production of a certain powder which mixed with a certain liquid
forms a strong quick setting cement.
5
This powder consists of
80 per cent of oxide of zinc, 10 per cent of minium, 5 per cent of yellow ochre,
per cent of plumbago.
To mix these ingredients to perfection it is preferable to mix the minium, yellow
ochre and plumbago thoroughly first and then add this to the oxide of zine.
The liquid consists of
99 per cent of chloride of zine and 1 per cent of perchloride of iron.
The cement is used as follows: At the moment of application the powder is mixed
with sufficient liquid to render the cement of the consistency of common putty.
The surfaces to which the cement is to be applied must be thoroughly well cleaned
and moistened with the solution before the application.
This cement will set in about 30 seconds and adheres strongly to wood, glass or
metal; it is also impermeable to water.
It can be used with excellent results in most cases where an instantaneous stoppage
is required such as leakages in gas pipes, barrels, tanks and reservoirs even with an
inner pressure of two or three atmospheres.
After two days it is so hard that it will scratch glass and after five minutes it cannot
be scratched with the finger nail.
The yellow ochre may be omitted as it is only introduced to give color to the
compound and to retard the setting of it; or it may be substituted by any other
desirable equivalent to vary the color of the compound.
I do not bind myself to the precise proportions given above.
Having now particularly described and ascertained the nature of the said invention,
as communicated to me by my foreign correspondents, and in what manner the same
is to be performed I declare that what I claim is:-
In a cement the mixture or combination of
(a) A powder of oxide of zinc, minium and plumbago, and
(b) A liquid of chloride of zinc and perchloride of iron, the whole substantially as
and substantially in the proportions specified.