Flow of Granular Materials or Liquids.
Year: 1887

page_text: Date of Application, 22nd Mar., 1887.
Specification Accepted, 10th June, 1887.
[Communicated from abroad by WILLIAM HENRY CAMPBELL, of Cleveland, Ohio,
in the United States of America, Manufacturer.]
Flow of Granular Materials or Liquids.
I, REGINALD HADDAN of the firm of Herbert & Co. Patent Agents of 67 Strand
London in the County of Middlesex Civil Engineer 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 :-
This invention relates to an improved tilting valve for dividing a falling column of
material, such, for instance, as grain, liquid, etc., in which an apron having inclined
wings and a sharp angular ridge, is mounted on an oscillating bar, the latter being
pivoted on knife edges. A depending arm is secured to the oscillating bar, and made
adjustable circumferentially of the latter, said arm having preferably a poise attached
that is made adjustable lengthwise of the arm, to the end that an extremely sensitive
and automatic valve is had, that will divide the falling column of material uniformly,
and into equal or unequal parts, according to the adjustment of the valve.
In the accompanying drawings, Fig. 1 is an end elevation, partly in section, of a
tilting valve embodying this invention.
Fig. 2 is a side elevation, portions being broken away, to show the construction.
A represents angular brackets, usually two or more in number, according to the
size of the valves. These brackets are mounted and arranged in line on an oscillating
rod B, the latter having knife edges b, that may rest upon any suitable supporting
plates or blocks.
On top of the brackets is secured the apron C that inay be of any suitable material,
according to circumstances, but is more usually made of sheet or plate metal. The
ridge c of the apron should form a sharp angle, and the ridge may be extended
upward, forming a knife edge as shown in Fig. 1. The wings of the apron slopo
preferably on an angle of about forty degrees, more or less.

page_text: A depending arm D, is mounted on the rod B, and secured by a set-screw d, by
loosening which the arm may be turned on the rod and set in the desired position
clative to the apron.
If the falling column of material is to be divided into equal parts, the axis of the
arm D should be in line with the ridge c of the apron. With such adjustment, so
long as the descending column is divided equally by the ridge c, the valve will remain
stationary.
If more of the descending column falls upon one wing, it will depress this wing,
tilting the valve, and moving the ridge c toward the heavier part of the column, by
reason of which more of the column will be deflected toward the lighter side, and an
equilibrium will thus be restored. The valve, being pivoted on knife edges, as afore-
said, is extremely sensitive, and will divide the column of falling material practically
into equal parts. If it is desired to divide the material into unequal parts, the set-
screw d is loosened, and the valve turned more or less to the une side.
A poise F is preferably attached to the arm D and made adjustable lengthwise of
the arm, usually by means of a nut d¹.
By moving the poise nearer to the axis of the valve, the latter is rendered more
sensitive, and by lowering the poise the action of the valve is rendered more steady.
The device can therefore be adjusted according to circumstances, and made to meet
all the requirements in practice.
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 :-
1. The combination with a tilting valve having a divided ridge and sloping wing,
of a depending arm or poise for balancing the valve, substantially as set forth.
2. In a tilting valve, the combination with an apron having sloping wings, and
dividing ridge centrally located on the apron, of a supporting-bar pivoted on knife-
edges, a depending arm adjustably secured to the supporting-bar, a poise mounted
on the arm and made adjustable lengthwise of the latter, the parts being arranged
substantially as set forth.
Dated this 22nd day of March 1887
REGINALD HADDAN.
By Herbert & Co.,
67, Strand, W.C.,
Agents to Applicant.