Improvements in connection with the use of Aluminum and Aluminum Alloys.
Year: 1892

page_text: Date of Application, 12th Jan., 1892-Accepted, 12th Mar.,
1892
Improvements in connection with the use of Aluminum and
Aluminum Alloys.
I GUSTAV PICKHARDT of Bonn on the Rhine, Germany 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:-
My present invention relates to the employment of aluminum or any suitable alloy
thereof, in the construction of the percolating surfaces of sieves, screens and similar
articles, used for the purposes of dividing, separating or grading solid substances of
varying dimensions, or, for straining or filtering liquids, or semi-liquids, or for
separating liquids from solids or vice-versa, and applies more particularly as
adaptable for use in connection with the construction of the percolating surfaces of
centrifugal sieves as employed by sugar manufacturers, the object of my said
invention being to provide a perforated or woven surface of metal or alloys of
metal, less liable to oxidization, of greater strength relatively to weight, and of
greater elasticity than obtains with other metals or alloys of metals hitherto
employed for a like purpose or purposes.
In carrying my invention into effect I employ the use of pure aluminum, or
aluminum alloyed with copper, brass, tin, lead or any other metal capable of
alloying therewith, in any suitable and practicable proportions but preferably that
of 1 part aluminum to 8 parts or thereabouts of copper brass or tin, or 6 parts
lead and form the same into plates or sheets of any desired dimensions, and
perforate them by drilling or punching or otherwise, so that circular, polygonal or
rectangular apertures are formed therein, of any size, and any distance apart,
countersunk or otherwise as may be desired, and use the said plates singly, or in
duplicate or triplicate or more, in either flat, corrugated, or spherical, hemi-
spherical or cylindrical form as a percolating surface in the construction of
centrifugal or other sieves or screens.
Or I may draw, spin or otherwise prepare the same metal, or alloy of metals
into wire of any gauge, and plat or weave the same into gauze form, with meshes
of any suitable size, contour or grading capacity, and employ the same in the
construction of similar articles of any desired size or configuration.
By the employment of aluminum or suitable alloys thereof in the manner
described I am enabled to construct a sieve or screen for any purpose of lesser
weight, greater elasticity, relatively to its strength, and less liable to oxidization
than obtains with any of the metals hitherto employed for a like purpose.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what 1
claim is.
The employment of aluminum or any suitable alloy thereof in the construction
of the percolating surfaces of screens, sieves and similar articles, either by forming
the same into plates or sheets and perforating them by drilling or punching, or
spinning or drawing the same into wire of any gauge and weaving into gauze form
substantially as and for the purposes herein described.
111 1-
Tanu 1800
GEO. THOS. HYDE,
4, Moorfields, Fore Street, London, E.C., Agent for the Applicant.