An Improved Combined Machine for Grinding, Mixing, and Riddling Coal Dust, Sand, and other Material.
Year: 1895

page_text: Cate of Application, 6th Mar., 1895
Complete Specification Left, 26th July, 1895-Accepted, 31st Aug., 1895
PROVISIONAL SPECIFICATION. .
An Improved Combined Machine for Grinding, Mixing, and Riddling
Coal Dust, Sand, and other Material.
We, JOHN HOWELL HOSGOOD, Engineer, of 16 Park Crescent, Barry, and
WALTER JAMES.HOSGOOD, Engineer, of 15 Park Crescent, Barry, near Cardiff,
in the County of Glamorgan, do hereby declare the onture of this invention, to
bo as follows:
Our invention relates to the grinding, mixing, and riddling of coal, dust, and
sand, or other material, for foundry or other purposes, and consists of an improved
combined machine for the purpose.
Our combined machine is constructed as follows ;-
The main body of the machine is a mixing cylinder, upon the top of which, or in
other suitable position, we apply a hopper for the supply of the material to be
mixed, to the mixing cylinder. To the said hopper we apply a pair, or more, of
adjustable plain or twist rollers, driven by suitable gearing from a main spindle, to
grind the material in the hopper before delivery to the mixing cylinder. The said
grinding rollers have a relieving spring to prevent a breakage of the machine, in
case a piece of iron or other unbreakable substance should get into the machine.
Through the mixing cylinder which receives the ground material from the
hopper, is fitted a spindle carrying fixed and revolving knives at different angles,
for the purpose of mixing the material; and the said spindle is rotated by worm
and worm-wheel gear, or other gearing, from the said first motion spindle. Fixed
knives may also be arranged on the interior of the walls of the mixing cylinder.
The said cylinder is provided with hinged, or sliding covers, or doors, so that the
knives can easily be got at for adjustment.
We may also arrange an outer cylinder about the aforesaid mixing cylinder, and
fir the intervening space between the two cylinders with adjustable twist or plain
rollere, driven by suitablo gearing from the first motion shaft, to revolve between
the inner and outer cylinders.
At the end of the mixing cylinder, we provide an exit spont for the mixed and
ground material, controlled by an adjustable door.
The said exit spout delivers the mixed and ground material ou to an inclined
riddle or graduated series of riddles, which are agitated by cam and rollers, or
other equivalent means, from a spindle conveniently at right angles to the first
motion shaft, and driven therefrom by mitre or other suitable gearing, friction or
otherwise.
This combined machine will be found of value in the saving of labour for the
mixing and grinding of material, and in its convenient adjustability to bring the
material to any required condition for foundry, moulding, or other purposes.
Dated this 6th day of March 1895.
FELL & WILDING,
1, Queen Victoria Street, London, E.C., Agents for the Applicants.

page_text: 1.
.
An Improved Combined Machine for Grinding, Mixing, and Riddling
Coal Dust, Sand, and other Material.
We, JOHN HOWELLI HOSGOOD, of 16 Park Crescent, Barry, Engineer, and
WALTER JAMES HOSGOOD, of 15 Park Crescent, Barry, in the County of
Glamorgan, Engineer do hereby declare the nature of our invention, and in what
manner the same is to bo performed, to be particularly described and ascertained
in and by the following statement:-
Our invention relates to the grinding, mixing, and riddling of coal dust and
sand, or other material for foundry or other purposes, and consists of an improved
combined machine for the purpose.
In order that our invention may be the better understood, we will now proceed
to describe the samie in relation to the accompanying drawing hereunto annexed;
reference being had to the letters and figures marked thereon. Like letters refer
to like parts in the various viewa.
Figure 1 is a vertical longitudinal section of our machine.
Figure 2.is a plan of the same; the gear for driving the riddling device being
removed.
Figure 3 is an end sectional elevation of the same.
Figure 4 is a vertical ecction of the riddle.
Our combined machine is constructed as follows:-
The main body of the inachine is a mixing cylinder A, upon the top of which or
in any other suitable position, we apply a hopper B for the supply of the material
to be treated in the machine. To the hopper B we apply a pair of adjustable
rollers C preferably of a twisted ribbed construction, adapted to be driven by
suitable gearing D from a main spindle E, in order to grind the material from the
hopper B, before delivery to the mixing cylinder A.
The said grinding rollers Care fitted, with a relief spring Fat each end, to
prevent a breakage of the machine; in case a piece of iron or other unbreakable
substance should get into the machine.
Through the mixing cylinder A the spindle passes and is supported therein
upon bearings G carried by the ends H of the cylinder A. At one end of the
cylinder immediately under the grinding rollers, is a helical rib or vane I, which is
carried on and rotated with the shaft or spindle E so as to advance the material
through the machine as it is fed in a similar helical rib or vaue J is fixed to the
other end of the shaft to deliver the material through the spout K. Between the
1. helical ribs and J, we arrange a series of mixing knives or arms L which are set
and fixed at various angles to one another upon the spindle E for the purpose of
mixing the material. These arms L are furnished with projections or bosses M
which break up and mix the material more effectually during the movement of the
arms L through it. We may if desirable arrange fixed knives on the interior of
the walls of the mixing cylinder, A, to produce a greater mixing effect.
A door N is provided on the mixing cylinder A to enable the knives to be easily
got at for the purposes of adjustment, replacement and repair.
The material is delivered by the spont K upon a riddling device which is
adapted to slide upon supports P. The reciprocation of this device O is affected
by a crank pin Q carried by a vertical shaft R, engaging in the slotted bridge S
upon the device O. The shaft R is driven from the shaft E by mitre wheels T,
which are fitted with a disengaging gear U, to allow of the motion of the device O
being stopped when so desired.
The riddling device O is fitted with two inclined sieves V one above the other,
and of different nesh, so that the product riddled has three grades, one being
1

page_text: delivered at each end of the device o and the third being that which passes down
through both sieves on to the floor.
This combined machine will be found of value in the saving of labour for the
mixing and grinding of material and in its convenient adjustability to bring the
material to any required condition, for foundry moulding or other purposes.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is —
A combined machine for grinding, mixing, and riddling coal dust, sand and other
material, constructed and arranged, substantially as described.
Dated this 17th day of July 1895.
FELL & WILDING,
1 Queen Victoria Street, E.C., Agents for the Applicants.