Means for the Prevention of Fire from Explosion in Malt Mills.
Year: 1893

page_text: Date of Application, 27th Mar., 1893
Complete Specification Lelt, 29th Jan., 1894-Accepted, 3rd Mar., 1894
PROVISIONAL SPECIFICATION.
Means for the Prevention of Fire from Explosion in Malt Mills.
CHARLES CHREE DOIG Consulting Distillery Engineer and Architect
147 High Street Elgin N.B. do hereby declare the nature of this invention to be
as follows:-
A malleable iron spiral conveyor in iron case of suitable pitch and size for
mill set at such an angle and driven at such a speed as keep the conveyor
choke full; and placed so that the crushed malt falling from the rollers of the
mill is led into it by a short shoot. The effect is that should a nail, stone or
match head &c. get between the rollers and cause an explosion it is limited
being confined to the small space under the rollers by the grist in the conveyor,
it forces for an instant the exhaust valve at the side and the flame from the
fine dust under the rollers is smothered before any damage can be done.
Dated this 24th day of March 1893.
CHARLES C. DOIG.
COMPLETE SPECIFICATION.
Means for the Prevention of Fire from Explosion in Malt Mills.
I, CHARLES CHREE DOIG of 147, High Street Elgin, Scotland, Architect'
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 means for the prevention of fire from explosion in
malt mill and consists in providing beneath the rollers of the mill a malleable
iron spiral conveyor into which, through a short hopper the crushed malt falls
from the rollers, and which conveyor I place at such an angle and revolve at
such a speed as to keep same always choke full of grist: I also provide an
exhaust tube or pipe fitted with valve in the side of the short hopper aforesaid.
Should a nail, stone, or match head &c. get between the rollers and thereby
cause an explosion said explosion is limited in effect by being confined to seat
of origin between the rollers and the conveyor. It forces for an instant the
exhaust valve at the side and the flame from the fine dust under the rollers is
smothered before any damage can be done.
And in order that this invention may be fully understood and readily carried
into effect I will now describe same with reference to the accompanying drawing
upon which
Fig. 1. represents in side sectional elevation that portion of the mill to which
the invention is applied,
Fig. 2 representing the exhaust pipe and valve before mentioned.
is the framing of the mill, bare the rollers, c is the short hopper which
according to this invention I place beneath the rollers and which conducts the
crushed malt to the conveyor, d is the exhaust pipe leading from the hopper
and the end of which is closed by the flap valve e. is the spiral conveyor,
before referred to, which is caused to revolve within the tube or casing g by
means of pulley or other gearing fitted at either end of shaft. i. This con-
veyor set at a convenient angle and drive at any desired speed and the web

page_text: of conveyor being stopped short of the shoot it seals the communication from
the conveyor to the elevator with crushed malt, hence should an explosion occur
at the rollers it will be confined within the hopper c and this being provided
with exhaust pipe and valve as above described will be instantly relieved by
said valve being caused to open by the pressure within and hence no damage
can ensue. kis a conducting tube or pipe from conveyor to the elevator 1.
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 I
claim is :--
1st. The means for the prevention of fire from explosion in malt mills substan-
tially as hereinbefore described and shewn in the accompanying drawings.
2nd. In malt mills the spiral conveyor f arranged and operating substantially as
hereinbefore described and shewn.
3rd. In malt mills the combination with the spiral conveyor f arranged in tube
or casing g. of the short hopper c constructed with exhaust pipe and flap
valve e substantially as and for the purposes hereinbefore described and shewn.
Dated this 29th day of January 1894.
HUGHES, ELI & HUGHES,
76, Chancery Lane, W.C., Agents for the Applicant.
HUGHES, ELI & HUGHES,
76, Chancery Lane, W.C., Agents for the Applicant.