Improvements in Electrically Operated Jigging Machinery.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Electrically Operated Jigging Machinery.
We, ARTHUR BERGTHEIL and HENRY WILSON-YOUNG, of 12, Camomile Street,
London, E.C., Engineers, and ALFRED BROWN, of 5, Dowgate Hill, London, E.C.,
Gentleman, do hereby declare the nature of this invention to be as follows:-
This invention relates to apparatus, in which a rapid reciprocating or jigging
motion is desired, to produce the close settling together or packing of particles,
such as tea, without direct pressure; er to sort particles by their specific density,
or to separate small from laiger particles by jigging them over a sieve bottom,
as in the treatment of minerals; and this improvement consists in operating such
jigging or reciprocating frame at an exceedingly high speed of pulsation, by
electrical or electro-magnetic means. such means requiring small expenditure of
electrical energy, avoiding the wear and tear of high speed reciprocating mechan-
ism, and being easily controlled as to periodicity of pulsations by well known
devices applicable to such electrical means.
Such jigging or reciprocating frame may be caused to reciprocate in a plane,
travelling upon anti-friction supports. such as rollers or ball bearings; or may
be suspended, with oscillatory pulsations; or may be hinged with oscillatory
pulsations at one end.
In all cases we produce the rapid reciprocations or pulsations desired, by the
intermittent attractions of an electro-magnet or magnets, against spring
re-action; or we may apply opposing intermittent and alternate magnetic attrac-
tions to the jigging frame, as an armature, between such alternate attractions,
with or without spring reactions.
To produce such intermittent electro-magnetic attractions, interrupted continu-
ous currents may be used, but we prefer to use single or polyphase alternate
electrical currents, to avoid sparking, applied to suitable electro-magnets,
operating upon suitable portions of the jigging frame as an armature.
Where we use alternate and opposing electro-magnetic effects upon the jigging
frame, we can produce these conveniently by the opposition of currents of
different phase, so as to make the alternate and opposing magnetic attractions
a result of the differentiation of the opposing currents.
It is obvious that by these means, we can produce reciprocating or jigging
effects, upon such a frame, acting as an armature between such diverse magnetic
attractions, at an enormous velocity or periodicity in any interval of time; and
without the wear and tear of high speed reciprocating machinery; and can at
all times minutely regulate the periodicity of the pulsations or reciprocations of
the frame, to suit any desired purpose, by the ease with which we can regulate
the speed of the generators producing such alternating or other electrical currents.
Dated this 8th day of September 1897.
FELL & JAMES,
1, Queen Victoria Street, London, E.C..
Agents for the Applicants.

page_text: Improvements in Electrically Operated Jigging Machinery.
We, ARTHUR BERGTHEIL and HENRY WILSON-YOUNG, of 12, Camomile Street,
London, E.C., Engineers, and ALFRED BROWN, of 5, Dowgate Hill, London, E.C.,
Gentleman, 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 apparatus, in which a rapid reciprocating or jigging
motion is desired, to produce the close settling together or packing of particles,
such as tea, without direct pressure; or to sort particles by their specific density,
or to separate small from larger particles by jigging them over a sieve bottom
as in the treatment of minerals and this improvement consists in operating such
jigging or reciprocating frame at an exceedingly high speed of pulsation by
electrical or electro-magnetic means, such means requiring small expenditure of
electrical energy avoiding the wear and tear of high speed reciprocating mechan-
ism and being easily controlled as to periodicity of pulsations by well known
devices applicable to such electrical means.
Such jigging or reciprocating frame may be caused to reciprocate in a plane
travelling upon anti-friction supports such as rollers or ball bearings, or may
be suspended and agitated with oscillatory pulsations; or may be hinged at
one end and agitated with oscillatory pulsations at the other end.
In all cases we produce the rapid reciprocation or pulsations desired by the
intermittent attractions of an electro-magnet or magnets against spring
or other equivalent reaction; or we may apply opposing intermittent and alternate
magnetic attractions to the jigging frame, as an armature between such alternate
attractions, with or without spring reactions.
as to
Where we use alternate and opposing electro-magnetic effects upon the jigging
frame we can produce these conveniently by the opposition of currents of
different phase or by the production of different polarity therefrom so
make the alternate and opposing magnetic attractions or repulsions a result of
the differentiation or of the opposition of the currents.
It is obvious that by these means we can produce reciprocating or jigging
effects, upon such a frame, acting as an armature between such diverse magnetic
attractions, at an enormous velocity or periodicity in any interval of time; and
without the wear and tear of high speed reciprocating machinery; and can at
all times minutely regulate the periodicity of the pulsations or reciprocations of
the frame, to suit any desired purpose, by the ease with which we can regulate
by known means the periodicity of the phase such as by regulating the speed
of the generators producing such alternating electrical currents.
And in order that our invention may be the better understood we now proceed
to describe the same in reference to the drawings hereto annexed and to the
letters and figures marked thereon.
Figure 1 is a part sectional elevation of a convenient form of our apparatus.
Figure 2 is a plan of the same.
Figure 3 is a transverse sectional elevation of the same.
A is a foundation plate provided with anti-friction ball or roller races BB
on which rests secured by side rails C C an upper plate D forming a gripping tray
for a box or case E into which it is proposed to pack or settle closely the tea or
other article without direct pressure.
The said box or case E is gripped by the two fences F F one on either side,
which are capable of sliding adjustment by noses G engaging as nuts with the
right and left handed screw H on the under tray D.

page_text: The said tray D resting upon the ball or roller races B B is capable of jigging
or reciprocating motion thereon between the limits of stops at either side K K
such reciprocation being under the reaction of a spring L tending always to
bring the tray to a normal position against one set of stops, and to equalize the
variable effect of the effect of the diminishing air-gap.
Such reciprocation is produced by the intermittent energising by an alternating
electric current of electro-magnets M M. These electro-magnets are conveni-
ently arranged as poles of two horse shoe cores of laminated plates N N, sur-
rounded by coils PP which can be connected in any convenient manner either
in series as shown, generating adjacent poles of either pair of the same polarity
or in parallel or in part series and parallel and energized by a single phase
alternating current of suitable periodicity.
Within the jaws or poles of these electro-magnets M M enter two keepers or
armatures QQ also of laminated plates, preferably of wedge form to suit the
wedge shaped jaws of the electro-magnets, as this shape gives a considerable ratio
of travel of the keeper Q in and out of the jaw of the electro-magnet with a
relatively small variation of the air gap.
In Figure 1 the left hand electro magnet and the left hand armature have
been removed for the sake of clearness.
The reciprocation of the tray D is checked by stops before the keepers Q can
come into actual contact with the attracting electro-magnets.
It is obvious that the reciprocation or jigging of this tray can be produced at
any required velocity or periodicity desired, without the wear and tear apper-
taining to high speed reciprocating mechanism, by the adjustment by well known
means of the periodicity of intermission, or of alternation of an electrical current
energizing the operative electro-magnets.
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: —
1st. A device adapted to articles to be jigged, settled, or packed adapted by
its supports to easily reciprocate as a keeper or armature to an intermittently or
variably energized electro-magnet or magnets, carried on a suitable fixed frame
or bed-plate.
2nd. In combination, a fixed bed plate, a tray resting thereon by ball or roller
anti-friction bearings, adjustable gripping fences on said tray, and electro-
magnets on the fixed bed plate, intermittently attracting a keeper or armature
on said tray substantially as and for the purposes described.
3rd. In a packing or jigging apparatus, in which one portion is caused to
reciprocate relatively to the other by electrical means, the formation of the
respective attracting surfaces of the electro-magnets and keepers obliquely to the
line of travel of the keepers, substantially as and for the purpose described.
4th. The arrangement and combination of parts to form an electrically operat-
ing jigging or packing machine, substantially as described as illustrated herewith.
day of T..1., 1000
FELL & JAMES,
1. Queen Victoria Street, London, E.C.,
Agents for the Applicants.
FELL & JAMES,
1, Queen Victoria Street, London, E.C.,
Agents for the Applicants.