Year: 1887

page_text: Date of Application, 30th Aug., 1887
Complete Left, 1st Feb., 1888
Complete Accepted, 2nd Mar., 1888
1, JOHN HALL of 1 New London Street in the City of London, Ship Owner, to
hereby declare the nature of this invention to be as follows:-
This Invention relates to machinery for the manufacture of blocks or briquettes of
artificial or agglomerated fuel; and it consists in an improvement in that class of
machine which forms the subject of a previous application for Letters Patent filed by
me on the 2nd day of May 1887 No. 6421.
In these machines as heretofore constructed, the supply of the mixture of materials
of which the briquettes are to be made, to the cylinder or trough wherein works the
ram by which the mixture is forced into the moulds, has been liable to irregularity
and the briquettes produced have consequently not been of uniform weight and
density; and the object of the present improvement is to remedy this defect and so
increase the out put of the machine by avoiding the waste which results from the
manufacture of imperfectly pressed briquettes.
Heretofore the cooling pan from which the mould-filling cylinder or trough is
supplied was placed over the latter and in direct communication therewith, and the
material had been forced into the ram cylinder or trough by the action of oblique
blades carried by the vertical shaft of the mill and revolving over the bottom of
the pan.
According to the present invention, a throat or hopper is interposed between the
cooling pan and the mould-filling cylinder or trough, and in this throat or hopper sets
of blades are mounted to revolve on a horizontal axis; these blades which revolve at a
speed proportioned to the size of briquettes to be made, being so formed and arranged
as to take the material from the cooling pan above and force it into the mould-filling
cylinder below, with a more positive action than that produced by the horizontally
revolving blades, and so ensuring a more uniform rate of speed to the moulds.
Dated this 30th day of August 1887.
J. HALD.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Machinery for the Manufacture of Artificial Fuel.
I, JOHN HALL of 1 New London Street in the City of London, Ship Owner, 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 machinery for the manufacture of blocks or briquettes of
artificial or agglomerated fuel; and it consists in an improvement in that class of
machine which forms the subject of a previous application for Letters Patent filed by
me on the 2nd day of May 1887, No. 6421.
In these machines, as heretofore constructed, the supply of the mixture of materials
of which the briquettes are to be made, to the cylinder or trough wherein works the
ram by which the mixture is forced into the moulds, has been liable to irregularity
and the briquettes produced have consequently not been of uniform weight and
density and the object of the present improvement is to remedy this defect and so
increase the out-put of the machine by avoiding the waste which results from the
manufacture of imperfectly pressed briquettes.
Reference is to be had to the accompanying drawings forming a part of this specifi-
cation in which figure is an elevation, partly broken away or in section; figure 2 is
a vertical section taken in the plane of the mould-filling ram; and figure 3 is a plan
of the cooling pan. The same letters of reference indicate the same parts in all the
figures.
Heretofore, the cooling pan A which receives the mixture of materials from the
pug-mill and from which the mould-filling cylinder or trough B is supplied, was
placed over the latter and in direct communication therewith, and the material had
been forced into the ram-cylinder or trough B by the direct action of oblique
blades C carried by the vertical shaft of the mill, and revolving over the bottom of
the pan A.
According to the present invention, a throat or hopper D is interposed between the
cooling pan A, and the trough B in which the mould filling ram B works, and in this
throat or hopper, sets of oblique blades E are mounted to revolve on a horizontal
axis F. The throat or hopper D corresponds to the trough B, and the blades, which
revolve at a speed proportioned to the size of briquettes to be made, agitate the
material fed into the throat by the blades C from the cooling pan A above, and
assist in forcing it into the mould filling trough B, which is immediately beneath the
throat D. By this means, the material is fed more regularly and uniformly to the
trough B, than when the horizontally revolving blades C alone are used, thus ensuring
a more uniform density of the moulded blocks.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is ;
In machinery for the manufacture of artificial fuel, the combination with the cooling
pan and its horizontally revolving blades and with the ram cylinder or trough of a
throat or hopper connecting the ram and trough and of sets of blades working within
the throat or hopper, substantially as and for the purpose specified.
J. HALL.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.