IMPROVE- MENTS IN COATING AND GALVANIZING SHEET IRON
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
I WILLIAM ALBERT JOHNS of Clapton London in the County of Middlesex Tin
Plate Manufacturer do hereby declare the nature of my invention for "IMPROVE-
MENTS IN COATING AND GALVANIZING SHEET IRON" to be as follows:-
To accomplish the object of my invention I employ a Bath preferably of Semi-
hexagon form open at both ends and having a branch at each side open at the
top this branch being adapted for feeding the Bath with metal and for taking
out the settlings which necessarily accumulate at the bottom of the same.
I provide in the aforesaid Bath a frame or frames which carries a series of slotted
guides from end to end of the saine, the guides at the feeding end being slightly
below the surface of the molten metal. I also provide at the feeding end of the
Bath an enclosed chamber which also carries a series of slotted guides similar
to those above referred to. This chamber will be parallel with the table which
carries the sheets or plates to be coated but it is curved at the end next to the
Bath so that the guides therein correspond with the guides under the molten
metal. The aforesaid guides are so arranged that one edge of the plate rests in the
top groove on the right hand side and the other in the bottom groove and the next
plate is placed in the top groove on the opposite or left hand side and the other in
the bottom so that they thereby enter into the grooves alternately, the last plate
pushing the first forward.
The Chamber is so constructed that the heat from the molten metal is sufficient
to warm and dry the sheets before entering into the coating solution.
Above the delivering end of the Bath I provide two frames carrying hollow or
solid rollers or pulleys and a pair of steel operators so constructed that they work
by springs or levers which press upon the surface of the plates as they pass through,
thereby wiping off any roughness and turning out a smooth plate. Above those
operators I arrange a pair or more of hollow rollers which are kept cool by the
circulation of cold water passing therethrough.
15th January 1881

page_text: +
I WILLIAM ALBERT JOHNS of 22 Rushmore Road, Clapton Park, London in the
County of Middlesex, Tin Plate Manufacturer do hereby declare the nature of my
invention for IMPROVEMENTS IN COATING AND GALVANIZING SHEET IRON and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
1 A Bath of a semi-hexagon shape with a side well K constructed or arranged
substantially as described & illustrated by my drawing.
2nd Chamber D in combination with guides E E. and the Funnel B. for the
escape of fumes for the purpose of drying and heating the black sheets as
illustrated by my drawing.
3rd The horizontal rollers C. C. for the purpose of feeding the sheets through the
drying chamber into the metal Bath as illustrated in my drawing.
4th The combination of standards or frame F. F., the rollers G. G. G. G. and
operators H H and levers and springs I and J. J. as illustrated in my
drawing.
My Invention relates to a peculiar construction of Bath and Apparatus for
galvanizing or coating black sheets with a mixture of metal.
In order that my said Invention may be more fully understood I shall proceed
to describe the same, and for that purpose shall refer to the several figures on the
sheet of drawings.
Fig. 1. is a sectional elevation of my improved Machine, Bath, drying chamber
and Furnace.
Fig. 2. is a plan of the same. A. is the Bath which contains the coating metal
whereby the black sheets are to be coated. B. is a funnel for the escape of fumes
arising from the flux on the Bath.-C. C. are a pair of conical feeding rollers for
feeding the sheets into the aforesaid drying chamber. D is the drying chamber
wherein the wet sheets are dried previous to entering into the metal. E. E. are
guides by which the plates are guided through the drying chamber D and Bath A.
F, F, are standards which carry rollers G. G. G. G. and the heating operators H. H.
I is a lever for closing the rollers G. G. as soon as the sheets enter in between the
bottom rollers. J. J. are springs for tightening the top rollers-K is a well for the
purpose of feeding the Bath with metal and for taking out, when required,
the settlings of hard metal which remain in the bottom of the Bath, as is well
understood in the galvanizing trade. L L. are the fire places for heating the metal
Bath M, M. are the casing plates for enclosing the brickwork.
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:-
1st A Bath of a semi-hexagon shape with a side well K constructed-the said
Bath arranged substantially as herein before described and illustrated by my
drawing.
2nd Chamber D in combination with guides E. E. and the Funnel B. for the
escape of fumes from the surface of the Bath for the purpose of drying
and heating the black sheets before entering into the coating metal
substantially as hereinbefore described and illustrated by my drawing.

page_text: 3rd The horizontal rollers C. C. for the purpose of feeding the sheets through
the drying chamber into the metal Bath as herein before described and
specified and illustrated in my drawing.
4th The combination of standards or frame F. F., the rollers G. G. G. G, and
operators H. H, and levers and springs I and J. J. substantially as herein
described and specified and illustrated in my drawing.
Dated this 15th day of October 1884.
WILLIAM ALBERT JOHNS.