Improvements in Apparatus for Extracting Dust from Chopped Hay, Straw, and like Materials.
Year: 1899

page_text: Date of Application, 12th Apr., 1899
Complete Specification Left, 12th Jan., 1900-Accepted, 17th Feb., 1900
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Extracting Dust from Chopped Hay,
Straw, and like Materials.
I, WILLIAM GIBSON, of Half Moon Inn, Collingham, near Leeds, in the County
of York, Farmer and Hay Dealer, do hereby declare the nature of this invention
to be as follows:-
The object of my invention is to extract and separate dust from chopped
hay, straw, and the like, without taking with it small particles of such hay,
chop, or chaff.
Attached to the chaff or hay and straw cutting or chopping machine, pre-
ferably below the same, is a conductor or hopper in which is an exhaust fan
driven from the shaft of the chaff cutter, preferably by belt from a large pulley
to a small one on the fan shaft; the fan is within a circular chamber or box,
at the top side of which is an opening communicating with a spout or shaft
passing upwards, preferably at an angle, to a larger chamber which is covered
at one, both, or all its sides with perforated zinc or the like: outside of this
is a dust chamber or box, and below the perforated chamber is a spout passing
downwards with its bottom turned to one side, at which is the opening for the
exit of the chaff or chop, which opening is regulated by a sliding door. Between
this and the perforated chamber is a second trough branching downwards to
carry off any further dust not blown out of the top perforations.
The chop or chaff is drawn down by the exhaust and passes up the spout or
shaft, and the dust is blown out through the perforated chamber into the
dust box, the chaff passes downwards and out at the bottom exit, and any
further dust through the lower dust spout.
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicant.
Improvements in Apparatus for Extracting Dust from Choppea Hay,
Straw, and like Materials.
I, WILLIAM GIBSON, of Half Moon Inn, Collingham, near Leeds, in the County
of York, Farmer and Hay Dealer, 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:-
-
The object of my invention is to extract and separate dust from chopped

page_text: hay, straw, and the like, without taking with it small particles of such hay,
chop, or chaff.
**
DESCRIPTION OF DRAWING.
Fig. 1 is a front elevation (partly in section) of my improved apparatus.
Attached to the chaff or hay and straw cutting or chopping machine A, pre-
ferably below the same, is a conductor or hopper B leading to an exhaust fan C
driven from the shaft D of the chaff-cutter A, preferably by a belt E from a
large pulley F to a small pulley G on the fan shaft.
The lower part H of the said hopper B has an open front, and terminates
in a horizontal board J, which is preferably detachable. The said fan C is
within a circular chamber or box K, the top of which communicates with an
inclined spout or flue L passing upwards to a larger chamber M, preferably of
the shape shown, the sides, ends, and top of which are formed of finely per-
forated zinc or the like. The said chamber M may have suitable transverse
stays or bolts. The perforated chamber M is enclosed in a dust chamber or
box N and below the said chamber M is a spout P leading downwards to 'the
side delivery spout R, which delivery spout is regulated by the sliding door S.
A suitable opening T is provided in the top of the dust chamber N to serve
as a wind outlet, and an auxiliary dust flue U is placed between the delivery
spout R and the chamber M.
The chop or chaff passes from the machine A to the board J at the bottom
of the hopper: it is then drawn by the fan into the box K, which has a central
opening, and it then passes up the flue L to the perforated chamber M, where
the dust is expelled through the perforations into the dust chamber N.
The purified chop or chaff then passes downwards to the delivery spout R.
Any dust not expelled through the perforations of the chamber M passes out
by the flue U, the sliding door S being regulated according to the condition of
the chop or chaff on leaving the chamber M.
Damp hay or straw may be treated by removing the board J from the bottom
of the hopper: the comparatively heavy chop or chaff then falls past the fan
opening, while the dust is drawn in by the fan and passes to the dust chamber.
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. A process for extracting dust from cut chaff, hay, and the like, in which
process the said cut chaff or chop is driven from the cutting machine by a
suitable fan into a perforated chamber enclosed within a suitable dust chamber,
the dust passing through the said perforations and the chaff being delivered
at a suitably placed spout below the said perforated chamber, substantially as
shown and described.
2. In a hay or chaff cutting and purifying apparatus, the combination of the
cutting machine A, hopper B, H, detachable board J, exhaust fan C, driving
belt E. pulleys F, G, fan box K, inclined flue L, perforated separating chamber M,
dust chamber N, delivery spout R, regulating slide S. wind outlet T, and dust
flue U, all arranged and operated substantially as, and for the purposes, shown
and described.
Dated this 11th day of January 1900
JOHN E. WALSH,
Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent for the Applicant.