Improvements in Apparatus for Dusting and Polishing Tin or Terne Plates.
Year: 1891

page_text: Date of Application, 16th Sept., 1891-Accepted, 31st Oct., 1891
COMPLETE SPECIFICATION.
Improvements in Apparatus for Dusting and Polishing Tin or
Terne Plates.
We, JOHN POWELL, Engineer, and JOHN RHYS WILLIAMS, Engineer, both of
Landore, South Wales, 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 :-
Our invention relates to improvements in apparatus for dusting and polishing tin
or terne plates, and has for its object the attainment of greater expedition in
carrying out the process, and increased efficiency than heretofore.
In order that our said invention may be the better understood we have appended
the accompanying sheet of drawings, the figure thereon representing an end eleva-
tion of the apparatus, and which is referred to in the description thereof.
In carrying our invention into practice, we mount four rolls, a b c d in suitable
bearings upon each side of the standards or side frames A of the machine,
setscrews e and e¹ being provided for the purpose of adjusting the pressure of
contact between the upper and lower rolls. In the centre, or approximately so, of
the standards or side frames A, we arrange four rollers or pulleys i; k. 1. the upper
and lower pairs being supported in bearings which are capable of vertical adjust-
ment as hereinafter described.
g
Two drums or pulleys 9 and are mounted in suitable bearings, arranged to slide
within vertical guides, said drums being above and below the rollers i, j and k. l
respectively, so that two broad belts or flexible carriers m and n may be stretched
over them and caused to travel continuously by their revolution. Said belts or
carriers m and are covered with sheepskin or other suitable material, and a broad
surface is thus obtained between the upper rollers ij and the lower rollers t l, so
that when a plate is caused to pass between the rolls a band cd, said plate also passes
between the moving surfaces of the belts or carriers m. n., which act upon the upper
and under surfaces of said plate simultaneously. The direction of motion of the
belts or carriers is the same as that of the plates passing therebetween, but, in order
to produce the amount of frictional contact necessary for cleaning or polishing,
the rate of speed of the belts or carriers is greater than that of the plate. The
plates are fed through by means of the rolls a, b and c d, which are speeded to suit
the requirements of the cleaning process. Regulating screws fand ff are provided
for the double purpose of adjusting the pressure between the surfaces of the belts
or carriers m and n and also to procure the necessary tension thereof.
The distance between the standards or side frames A may be arranged, in designing
a special machine according to our invention to suit the width of the plates that are
to be operated upon, and we may, if necessary, add guide, feed, or delivery rolls,
tension pulleys or the like, according to the requirements of each case of adaption
without departing from the essential principles of our said invention.
Having now particularly described, and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
First. The construction and arrangement of parts constituting an apparatus for
dusting and polishing tin or terne plates, substantially as herein described and shewn
by the accompanying drawing.
Second. In an apparatus for dusting and polishing tin or terne plates, the employ-
ment of belts or carriers arranged and driven so as to form double continuous rubbing

page_text: surfaces, substantially as and for the purpose herein described, and as shewn by the
appended drawing.
Dated this 8th day of September 1891.
FREDK. WALKER,
11, Furnival Street, Holborn, London, E.C., Agent for the Applicants.