US 699907 A
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No. 699,907. Patented ma l3, I902.
a. .1. ATKINS.
ELECTROLYTIC APPARATUS FOR MANUFACTURING CERTAIN SALTS SUITABLE FOR I THE SUBSECUENT PRODUCTION CF CHLURIN.
(Application filed Aug. 17, 1991.)
U ITE STATES PATENT OFFICE.
GEORGE JONES ATKINS, OF LONDON, ENGLAND.
ELECTROLYTIC APPARATUS FOR MANUFACTURING CERTAIN SALTS SUITABLE FOR THE SUBSEQUENT s PRODUCTION OF CHLORIN.
SPECIFICATIQN forming part of-Lett'rs PatentNo. 699,907, dated May 13, 1902.
Application filed August 17, 1901. Serial No. 72.405. (No model.) I
To all whom it may concern.-
Be it known ihatI, GEORGE JoNEs ATKINS? a subject of the King of Great Britain, re-- the Subsequent Production of Ohlorin; and- I do hereby declare the following to be a full, clear, and exact description of-the invention, such as will enable others skilled in the art to which it appertains to make and use the same;
It is Well known that chlorid of sodium may be decomposed electrolytically. -Itis well known also that underdifferent conditions the electrolysis of chlorid of sodium will produce difierent results, producing sometimes metallic sodium and chlorin, sometimes chlorate of sodium orhypochlorites or oxychlorids of sodium, and sometimes caustic soda and chlorin. s c
The object of this invention is to produce by electrolysis a mixture of chlorate of sodium and oxychlorid of sodium and chlorid of sodium in a commercial and economical man ner with a View to the'production from such mixture by a subsequent operation of chlorin for use in the arts. 7 g V For the purpose of my invention I employ electrolytic apparatus constructed and arranged as shown in Which tion, Fig. 2 a transverse section, and Fig.3 a plan, of the said apparatus.
a is a long trough-like containing vessel, made of wood or other suitable materiaLlined with carbon b, for example, which carbon be-- In the trough thus formed" I cause to revolve a cylinder 0, preferably of wood, but entirely incased in sheet-lead'or' other suitable conductor d. This cylinderbecomes the cathode and is mounted in sui'tcomes the anode.
one end to the other, the solution entering the the annexed drawings, in' I isthat the electrolytic decomposition should Figure 1 is a longitudinal sectional eleva-- trough at a and leaving it at 0 The cathode d is caused to revolve by means of the beltpulley g, for-example, and the electrolyte,
which may consist of a solution of sodium chlorid, for example, is poured into the trough to such a level as to'cover the carbon anode Z2 and, preferably, somewhat lessfthan half the diameter of the cathode c d, the object being that theaxis of the cathode should be out of-the electrolytic solution.
I Above and resting on the cathode c d along its entire lengthl place a scraper h, of indiarubber or felt or other suitable material, the object of which scraper is to remove and push the other side.
' I connect the apparatus with a dynamo or other convenient source of electric current by means of the conductors i and j, for example. I find it convenienttouse a current of a'jpressure not exceeding four volts,'and if the electrolytic"solutionis kept in order and ifthe surface of the cathode is kept carefully free from hydrogen polarization is avoided, and I am able to utilize a very large flow of electric energy as measured in' amperes.
7 My aim in using .the apparatus described be as nearly as possible as follows: decomposition of the waterwith evolution and liberas "tion of-the hydrogen and combination of the released oxygen and formation of the oxychlorids-imthe chlorid solution. Any sub- Smear evolution of chlorin or formation of hydrochloric acid is an indication that the apparatusisnot being worked in its most perfect manner.
of chlorin. The solution may either be used as it comes from the trough for the purpose of producing chlorin or the water may be evaporated and the salts thereby recovered for future use, when they can be redissolved in Water and utilized as required. Chlorin may be obtained from these salts either by using sulfuric acid or any other suitable acid or acid salt in a manner that forms the subject-matter of another application for patent, Serial No. 53,136, filed March 27, 1901.
I claim- Electrolytic apparatus for manufacturing certain salts suitable for the subsequent production of chlorin which consists of a long trough-like vessel a lined with a suitable anode b, a cylinder (2 eased in sheet-lead forming a cathode arranged to rotate in the troughlike vessel a, connections Lj with a source of electricity arranged to deliver a on rrent of not more than say four volts of electromotive force to the electrolyte, a flexible scraper h to remove the adhering electrolyte solution