An Improvement connected with Magnetic Separating Machines for Extracting Iron and Steel Particles from Borings and Turnings of Brass and Copper and other Non-magnetic Metals, also from Charcoal and Barths,
Year: 1899

page_text: Date of Application, 20th Mar., 1899
Complete Specification Left, 19th Dec., 1899-Accepted, 20th Apr., 1900'
PROVISIONAL SPECIFICATION.
An Improvement connected with Magnetic Separating Machines for
Extracting Iron and Steel Particles from Borings and Turnings
of Brass and Copper and other Non-magnetic Metals, also from
Charcoal and Barths,
I, FRANK BURY PARKINSON, of 11, Fernleaf Street, Moss Side, Manchester,
Civil and Mechanical Engineer, do hereby declare the nature of this invention
to be as follows:-
The object of my invention is to increase the capacity or work of the machines.
To retain the power of the permanent magnets, and to give a regular constant
feed of the material to be operated upon.
For the purposes of my invention to increase the capacity or work of the
machines, in place of the ordinary single spiral of magnets, I use a double,
triple or quadruple spiral of magnets thus giving a correspondly increased
delivery of material operated upon.
To retain the power of the magnets in place of the usual sheet iron troughs
in which the magnets revolve, I use a non-conducting trough of aluminium or
other non-magnetic metal.
To give a constant regular feed of material to the machine, I use a worm or
spiral at the bottom of the hopper which contains the material to be operated
upon, before entering the trough in which the magnets revolve.
The hopper is closed at the bottom except where the worm or spiral works
through, and motion is communicated to the worm or spiral from revolving
shaft of machine, giving a constant regular feed of material from hopper to
trough of machine in which the magnets revolve.
To adjust or alter rate of feed differential pulleys or gearing is used from
the shaft of machine to the shaft of worm or spiral.
The chief features of novelty are double, triple or quadruple spiral of mag-
nets somewhat similar to an ordinary double triple or
screw.
Non-conducting trough in which the magnets revolve.
Spiral or worm feed of material from hopper.
1
T
.
1000
quadruple threaded
COMPLETE SPECIFICATION.
An Improvement connected with Magnetic Separating Machines for
Extracting Iron and Steel Particles from Borings and Turnings
of Brass and Copper and other Non-magnetic Metals, also from
·Charcoal and Earths.
I, FRANK BURY PARKINSON, of 11, Fernleaf Street, Moss Side, Manchester,
Civil and Mechanical Engineer, do hereby declare the nature of this invention

page_text: and in what manner the same is to be performed, to be particularly described
and ascertained in and by the following statement:—
The chief object of my invention is to increase the capacity or work of the
machines.
To retain the power of the permanent magnets.
And to give a regular constant feed of the material to be operated upon.
For the purposes of my invention, to increase the capacity or work of the
machines, in place of the ordinary single spiral of magnets on the magnet
roller of machine, I use a double triple or quadruple spiral or thread of magnets
on the magnet roller thus giving a correspondingly increased delivery of
material operated upon.
To retain the power of the magnets, in place of the usual sheet iron trough
in which the magnets revolve, 1 use a non-conducting trough of aluminium or
other non-magnetic metal.
To give a constant regular feed of material to be operated upon, to the
machine.
To the base of the hopper H or feeding cone which contains the material
to be operated upon, before entering the trough in which the magnets revolve.
I attach a trough T containing a spiral or worm S to shaft of which is con-
nected differential pulleys 1.
When motion is communicated to spiral, the material is conveyed constantly
along the trough T from base of hopper to orifice O. at the other end of trough
from whence it falls into the trough containing the revolving magnets.
A spout is attached to orifice 0 when requisite pitch diameter and speed of
spiral varies with the material operated upon.
Motion adjustable is given to pulleys of spiral from revolving shaft of
machine from either inside or outside of machine, when motion is communicated
from the outside of machine, the shaft of spiral is lengthened accordingly.
Fig. 1 is elevation, shewing H base of hopper attached to frame side of
machine F. PP are the differential pulleys. S is the spiral. EE are the ends
attached to trough forming bearings for spiral S. CC are collars of spiral
shaft.
Fig. 2 is section shewing plate G of hopper for attaching to machine side.
Fig. 3 is plan shewing base of hopper H connected to trough T.
Fig. 4 is a front elevation shewing spiral feed T with its hopper II affixed
to frame side, also shewing the motion communicated to the same by the
differential pulleys on brush shaft either inside the machine, or outside of
machine by lengthening the shaft of spiral feed, also shewing the material K
delivered from orifice of spiral feed and falling into the magnet trough M.
Fig. 5 is end elevation shewing M non-conducting magnet trough in which
the magnets revolve, also shewing a position of hopper H and spiral feed T
affixed to frame side.
A method of securing the magnets in a spiral form on to the shaft is as
follows.
The magnets are affixed to holders, at the end of same by a button on the
semicircular end of the magnet and a screw passing through from the holder
to the button on the magnet, the poles or arms of magnet projecting from the
holder the holder has a lip on its end which fits into the space between the
poles of the magnet which with the button and screw fixes them in position.
ou the holder, at the other end of the holder is an orifice which fits on to the
shaft on which and with which the magnets revolve.
And when No. 1 magnet and holder is on the shaft the holder of No. 2
magnet and holder abuts on the semicircular end of No. 1 magnet making a
step forward equal to thickness of holder, and similarly the remainder of
magnets and holders thus forming a spiral, pitch according to the depth or
breadth of holder.

page_text: The first holder and magnet abut against a collar on the shaft the last holder
and magnet with the intervening ones are screwed up by a nut fitting on a
Borewed portion of the shaft.
For acute or quick pitches of spiral, the holders fit on the shaft as before,
but the arm of the holder to which the magnets are attached is not straight
but has an inclination or angle the same as the pitch of spiral used, the right
hand end of arm of No. 1 holder abutting on the left hand end of arm of
No. 2 holder, and the right hand end of arm of No. 2 holder abutting on the
left hand end of arm of No. 3 holder and likewise to the number required.
To make a double threaded spiral, the holders instead of having a single arm,
have two arms opposite each other, that is double ended, thus having two
magnets on one holder opposite each other, the breadth of holder is in proportion
to the pitch of spiral used.
Similarly for triple or quadruple threaded spirals the holders are made with
three or four arms, breadth of holder as before in proportion to the pitch of
spiral' used.
•
Fig. 6 shewa plan of double ended holder for forming a double threaded
spiral.
One end shews magnet N attached to holder B by washer and screw W. On
the end of holder is the lip L for securing magnet in position.
Fig. 7 is section of same.
Fig. 9 is plan shewing formation of spiral.
Fig. 8 is section shewing the second or top holder abutting on the first or
lower magnet N and magnet is projected in its position from Fig. 9.
Figs. 10 and 11 are plans of holders for forming triple and quadruple
threaded spirals.
Fig. 12 is plan shewing holder at an angle for quick threaded spirals.
Fig. 13 is front view of Fig. 12 shewing angle of holder with its boss or
orifice.
Having now particularly described and ascertained the nature
of my
invention and in what manner the same is to be performed I declare that what
I claim is:-
In magnetic separating machines the use of double, triple or quadruple
spiral of magnets somewhat similar to an ordinary double triple or quadruple
threaded screw non-conducting trough in which the magnets revolve spiral or
worm constant feed of the material from hopper feed adjustable all substantially
as and for the purpose set forth.
Dated this 18th day of December 1899
FRANK BURY PARKINSON.
11, Fernleaf Street, Moss Side, Manchester.