Improvements in Apparatus for Drying Grain, Sawdust, Ground Logwood, Starch, Peat, Dyewoods, and other like Substances or Materials.
Year: 1894

page_text: Date of Application, st Sept., 1894
Complete Specification Left, 23rd Jan., 18:5-4ccepted, 23rd Feb., 1895
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Drying Grain, Sawdust, Ground
Logwood, Starch, Peat, Dyewoods, and other like Substances or
Materials.
I WILLIAM HADFIELD BOWERS of the Brookfield Chemical Works West
Gorton Manchester Manufacturing Chemist do hereby declare the nature of this
invention to be as follows:-
This invention relates to improvements in apparatus for drying damp substances
and materials in quantities such as grain, sawdust, ground logwood, starch, peat,
dyewoods and the like substances or materials.
The object of these improvements is to perform the operation of drying the said
substances and materials in large quantities in a continuous and more expeditious
and uniform and effectual manner than heretofore has been the case.
In accomplishing this I employ a receptacle forming in cross section a whole or a
portion of a circle, say a semi-circle. This receptacle is furnished at one end with a
suitable inlet say a hopper and a feed screw, and at the other end with an outlet. The
said receptacle is jacketted, the intervening space being adapted to receive the heating
medium such as steam, hot air or the like, necessary for the said drying operation.
In the said receptacle I mount concentrically therewith in bearings a shaft
suitably rotated, upon which are fixed at suitable distances apart a number of rim
wheels or pulleys. The peripheries of the said rim wheels or pulleys are furnished
longitudinally with a number of rails of angle or other suitable iron so arranged as
to nearly touch the interior of the aforesaid receptacle when the same are rotated.
Between the said angle or other suitable iron, rails are fixed inclined thereto and
at suitable distances apart from each other a number of screw blades.
The substance or material to be treated is fed by means of the said hopper and
screw, or other suitable feeding device into the respective end of the aforesaid
receptacle, in which latter it is subjected to the aforesaid heat and to the rotary
action of the said longitudinal rails and the inclined screw blades. The said rails
serve to continuously scrape up and turn over the heated substance or material and
the said blades to propel the same continuously and gradually from the inlet to the
outlet end of the receptacle where it arrives and leaves the apparatus in a perfectly..
dry condition.
Dated this 31st day of August 1894.
WILLIAM HADFIELD BOWERS.
F. Bosshardt & Co.,
Agents to Applicant.

page_text: Inprovements in Apparatus for Drying Grain, Sawdust, Ground
Logwood, Starch, Peat, Dyewoods, and other like Substances or
Materials.
I, WILLIAM HADFIELD BOWERS, of the Brockfield Chemical Works, West
Gorton, Manchester, in the County of Lancaster, Manufacturing Chemist, 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 improvements in apparatus for drying damp substances
and materials in quantities, such as grain, sawdust, ground logwood, starch, peat,
dyewoods, and the like substances or materials.
The object of these improvements is' to perform the operation of drying the said
substances and materials in large quantities in a continuous and more expeditious
and uniform and effective manner thair heretofore has been the case.
And in order that my invention may be more fully understood I have caused to
be appended hereunto one sheet of drawings marked with letters of reference
indicating like parts in the various figures.
Fig. 1 is a side view partly in section, Fig. 2 a plan, Fig. 3 an end view and
Fig. 4 a vertical section at line A-B of Fig. 1, of an apparatus for drying grain
and the like aforesaid constructed in accordance with my invention.
In carrying out my invention and referring to the figures generally, I employ a
receptacle a forming in cross section a whole or a portion of a circle, say a semi-
circle, as shown in the drawings, see more particularly Fig. 4. This receptacle is
furnished at one end with a suitable inlet say a hopper b and a feed screw cand at the
other end with an outlet or shoot d. The receptacle a is jacketted, the intervening
space e being adapted to receive heating medium, such as steam, hot air, or the like
necessary for the said drying operation.
h
In the receptacle a mount concentrically therewith in bearings f a shaft g
suitably rotated, upon which are fixed at suitable distances apart a number of rim
wheels or pulleys h. The peripherys of the rim wheels or pulleys are furnished
longitudinally with a number of rails of angle or other suitable iron so arranged
as to nearly touch the, interior of the receptacle a when the same are rotated.
Between the angle or other suitable iron rails are fixed inclined thereto and at
suitable distances apart from each other a number of screw blades k. The said rim
wheels or pulleys, rails and inclined blades form a kind of a reel, which when only
partially surroun led by the receptacle a may be enclosed by a cover l, as shown in
the drawing with or without outlets for the purpose of preventing or regulating
the escape of the steam or hot gases from the material or substance under
treatment.
The substance or material to be treated is fed by means of the hopper band
screw c, or other suitable feeding device, into the respective end of the receptacle a
in which latter it is subjected to the aforesaid heat and to the rotary action of the
longitudinal rails i and the inclined screw bladesk. The rails i serve to continuously
scrape up and turn over the heated substance or material and the blades k to propel
the same continuously and gradually from the inlet to the outlet end of the
receptacle a where it arrives and leaves the apparatus through the shoot d in a dry
condition. The outer edges of the said rails may be either plain as shown in the
drawing or seriated.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, I declare that what I
claim, is-
"In apparatus for drying grain, sawdust, ground logwood, starch, peat,
dyewoods, and other like substances or materials."
1st. The general arrangements and combination of parts constituting my improve-
ments operating substantially as and for the purpose set forth.
2nd. A receptacle a adapted to receive the substance or material to be treated
having an inlet and outlet and a jacket which provides a space e for the reception
of the heating medium, all substantially as set forth.
3rd. In combination with the receptacle a, specified in the preceding claim,
a reel adapted to rotate in the said receptacle and having longitudinal rails i
between which are arranged inclined blades k the said rails being adapted to
continuously scrape up and turn over the substance or material under treatment
and the said inclined blades to gradually propel the same from the inlet to the
outlet end of the receptacle a, all substantially as set forth.
Dated this 22nd day of January 1895.
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.