Apparatus for Churning White Lead and Oil into Pasty Condition.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Apparatus for Churning White Lead and Oil into Pasty Condition.
I, GUSTAV BISCHOF, of 11, Victoria Street, Westminster, in the County of
London, Professor and Analytical Chemist, do hereby declare the nature of this
invention to be as follows:-
:-
White lead, which may be mixed with more or less of the liquor in which
it was converted into carbonate or with water employed for washing it, when
it has oil added to it, can be converted into paste consisting of white lead and
oil, by vigorous churning.
My invention relates to apparatus for effecting this operation.
For this purpose I provide a vat preferably of wood, with a removable wood
cover through a hole in which passes a rod, having fixed on it two or more
beaters, like pistons with their upper sides bevelled.
These as well as the rod on which they are fixed are preferably of wood.
They are caused to reciprocate vertically by a crank or eccentric on an over-
head revolving shaft linked to an iron or steel rod which moves in guides and
is adjustably connected to the wooden rod carrying the beaters.
The hole of the lid through which the rod passes is surrounded by a suitable
guard to prevent splashing as the rod reciprocats.
The vat being charged with the material and the lid closed, the beaters are
caused to reciprocate while oil is gradually introduced. After a time the oil
and white lead become compounded into a paste which settles at the bottom of
the vat leaving the separated liquor comparatively clear above. The liquid is
run off and the paste is removed through a lateral hole near the bottom of the
vat which is opened when the operation is complete.
The paste can then be freed from liquor and water adhering to it by pressing
or otherwise.
Dated this 12th day of February 1898.
ABEL & IMRAY,
Agents for the Applicant.
Apparatus for Churning White Lead and Oil into Pasty Condition.
I, GUSTAV BISCHOF, of 11, Victoria Street, Westminster, in the County of
London, Professor and Analytical Chemist, 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:-
White lead, which may be mixed with more or less of the liquor in which
017

page_text: it was converted into carbonate or with water employed for washing it, when
it has oil added to it, can be converted into paste consisting of white lead and
oil, by vigorous churning.
My invention relates to apparatus for effecting this operation.
For this purpose as shown in vertical section in the accompanying drawings
I provide a vat L preferably of wood, with a removable wood cover through
a hole in which and through guides N and n passes a rod M having fixed on
it two or more beaters m like pistons with their upper sides bevelled. These
as well as the rod on which they are fixed are preferably made of wood. They
are caused to reciprocate vertically by a crank Q or it might be an eccentric
on an overhead revolving shaft linked to an iron or steel rod l' which is ad-
justably connected by a screw coupling 2 to the wooden rod M carrying the
beaters. The rod M has on its upper end a suitable guard to prevent splashing
as the rod reciprocates.
The vat being charged with the material and the lid closed, the beaters are
After a time the oil
.caused to reciprocate while oil is introduced by a hole O.
and white lead become compounded into a paste which settles at the bottom of
the vat leaving the separated liquor comparatively clear above.
The liquid is run off through suitable cocks and the paste is removed through
a lateral hole near the bottom of the vat which is opened when the operation.
is complete.
The paste can then be freed from liquor and water adhering to it by pressing
or otherwise.
Having now particularly described and ascertained the nature of this in-
vention and in what manner the same is to be performed, I declare that what
I claim is:-
Apparatus for churning white lead and oil, constructed and operating sub-
stantially as described with reference to the accompanying drawings.
Dated this 10th day of November 1898.
ABEL & IMKAI,
Agents for the Applicant.