Magnetic Apparatus for Effecting Reciprocating Motion.
Year: 1896

page_text: Date of Application, 7th Nov., 1896
Complete Specification Left. 17th July, 1897-Accepted, 21st Aug. 1897
PROVISIONAL SPECIFICATION.
Magnetic Apparatus for Effecting Reciprocating Motion.
I, EDWARD HOPKINSON of Mather & Platt, Limited, of Salford Iron Works, Salford,
in the County of Lancaster, Engineer, do hereby declare the nature of this invention
to be as follows:-
This invention relates to magnetic apparatus whereby an appliance such as a
hammer, striker, beater, or the like, urged in the one direction by weight or spring,
is alternately moved in opposition to the weight or spring and released, thus having
the required reciprocating motion imparted to it.
For this purpose, a revolving iron or iron-rimmed wheel has a circumferential
groove in which is wound a coil of insulated wire connected to a battery or other
source of electric power, so that the iron of the rim is rendered inagnetic, the flanges
which form the sides of its groove constituting circular polar extensions capable of
attracting an iron keeper or armature which is attached or connected to the striker
or other appliance to be reciprocated. This appliance is suitably guided and urged
by weight or spring away from the magnetic wheel, but its armature is drawn to, and
would be held in contact with the flanges as they revolve if these flanges were
continuous.
In order, however, to effect the desired reciprocating motion, segments of the
flanges are cut away, so that, during portions of each revolution of the wheel, the
attraction of the armature ceases, and the appliance makes a stroke away from
the wheel in obedience to the weight or spring.
Dated this 7th day of November 1896.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Magnetic Apparatus for Effecting Reciprocating Motion.
I, EDWARD HOPKINSON, of Mather & Platt, Limited, of Salford Iron Works, Salford,
in the County of Lancaster, Engineer, 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 magnetic apparatus whereby an appliance such as a
hammer, striker, beater, or the like, urged in the one direction by weight or spring,
is alternately moved in opposition to the weight or spring and released, thus having
the required reciprocating motion imparted to it.
For this purpose as shewn in vertical section Fig. 1 and sectional plan Fig. 2 of the
accompanying drawings a revolving iron or iron-rimmed wheel A has a circumferential

page_text: groove in which is wound a coil B of insulated wire connected to a battery or other
source of electric power, so that the iron of the rim is rendered magnetic, the flanges b
which form the sides of its groove constituting circular polar extensions capable of
attracting an iron keeper or armature C which is attached or connected to the striker
or other appliance to be reciprocated. This appliance is suitably guided and urged
by weight or spring in the direction indicated by the arrow D, but its armature is
drawn to, and would be held in contact with the flanges b as they revolve and thus
moved in opposition to the weight or spring if these flanges were continuous. In
order, however, to effect the desired reciprocating motion, segments of the flanges are
cut away, so that, during portions of each revolution of the wheel, in the direction of
the arrow E the attraction of the armature C ceases, and the appliance makes a stroke
away from the wheel in obedience to the weight or spring.
Having now particularly described and ascertained the nature of this
invention and in what manner the same is to be performed, I declare that what I
claim is :-
Magnetic apparatus for effecting reciprocating motion substantially as described
with reference to the drawings.
Dated this 17th day of July 1807
ABEL & IMRAY,
Agents for the Applicant.