Improvements in Apparatus suitable for Preparing Oxychloride of Magnesium.
Year: 1887

page_text: Date of Application, 27th Oct., 1887
Complete Specification Left, 26th July, 1888
Complete Specification Accepted, 7th Sept., 1888
Π
1
PROVISIONAL SPECIFICATION.
Improvements in Apparatus suitable for Preparing Oxychloride of
Magnesium.
I, WALTER FRANK RAPHAEL WELDON of 19 Great George Street in the City of
Westminster, Gentleman, (a communication to me from Alfred Rangod Pechiney of
Salindres (Gard) in the Republic of France, Chemical Manufacturer) do hereby
declare the nature of this invention to be as follows:-
In the extraction of chlorine and hydrochloric acid from magnesium chloride by
the process patented on the 23rd of June 1884 No. 9306 it is necessary first to trans-
form the said magnesium chloride into oxychloride.
This invention relates to apparatus for effecting this transformation.
Figure 1 is a vertical section and Figure 2 a plan of the apparatus which consists
of an annular.sheet iron vessel A resting on rollers a, a.
A pinion e gearing with the wheel b, gives a continuous but slow rotary motion to
this vessel. On the left of the apparatus (as shown in the drawing) there are three
two armed stirrers C, D, E, which as well as the shafts d and fare mounted on the
fixed frame M. These stirrers are rotated from the shaft by means of a bevelled
wheel gearing with a bevelled wheel on the shaft of the central stirrer D which also
carries a spur wheel gearing with two equal spur wheels on the shafts Û and E.
The fast and loose pullies B and B₁, driven by a band give motion to the whole
machine.
To manufacture oxychloride of magnesium this apparatus is put in motion, and
then by means of a pipe, the requisite quantity of a hot, or still better a boiling
concentrated solution of magnesium chloride is put into the vessel A. The necessary
quantity of powdered magnesia is then added. By reason of the rotary movement
every portion of the material is successively brought under the action of the
stirrers C, D, E, which mix it rapidly. At the end of some minutes the combination
begins to take place and the mixture which was at first completely liquid, gradually
thickens till it is completely solidified. It is now only necessary to take the pieces of
solid oxychloride thus produced out of the apparatus.
Dated this 27th day of October 1887.

page_text: COMPLETE SPECIFICATION.
Improvements in Apparatus suitable for Preparing Oxychloride of
Magnesium.
I WALTER FRANK RAPHAEL WELDON of 19 Great George Street in the City of
Westminster Gentleman (a communication to me from Alfred Rangod Pechiney of
Salindres (Gard) in the Republic of France Chemical Manufacturer) 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:
In the extraction of chlorine and hydrochloric acid from magnesium chloride by
the process patented on the 23rd of June 1884 No. 9306 it is necessary first to trans-
form the said magnesium chloride into oxychloride.
This invention relates to apparatus for effecting this transformation.
Referring to the drawings left with the Provisional Specification
Figure 1 is a vertical section and Figure 2 a Plan of the apparatus which consists
of an annular sheet iron vessel A resting on rollers a. a.
A pinion c gearing with the wheel b gives a continuous but slow rotary motion to
this vessel.
On the left of the apparatus (as shewn in the drawing) there are three two armed
stirrers C. D. E which as well as the shafts and fare mounted on the fixed frame M.
These stirrers are rotated from the shaft by means of a bevelled wheel gearing with
a bevelled wheel on the shaft of the central stirrer D which also carries a spur wheel
gearing with two equal spur wheels on the shafts C and E.
The fast and loose pullies B and B₁, driven by a band give motion to the whole
machine.
To manufacture oxychloride of magnesium this apparatus, is put in motion, and
then by means of a pipe the requisite quantity of a hot, or still better a boiling
concentrated solution of magnesium chloride is put into the vessel A. The necessary
quantity of powdered magnesium is then added. By reason of the rotary movement
every portion of the material is successively brought under the action of the
stirrers C. D. E which mix it rapidly. At the end of some minutes the combination
begins to take place and the mixture which was at first completely liquid, gradually
thickens till it is completely solidified. It is now only necessary to take the pieces of
solid oxychloride thus produced out of the apparatus.

page_text: Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what I
claim is
In apparatus suitable for preparing oxychloride of magnesium, the combination
substantially as described, consisting of the annular vessel A the driving gear by
which a continuous slow rotary motion is imparted to the vessel and the stirrers also
rotated by the driving gear by which the solution of chloride of magnesium and
powdered magnesia are mixed in the vessel and caused to combine as herein set
forth.