AN IMPROVED ELECTRO-MAGNETIC ENGINE FOR OBTAINING MOTIVE POWER
Year: 1876

page_text: LETTERS PATENT to Thomas William Cole, of Walthamstow, in the County of
Essex, and Paul Edward Cashin, of York Road, in the County of Middlesex,
for the Invention of "AN IMPROVED ELECTRO-MAGNETIC ENGINE FOR
OBTAINING MOTIVE POWER."
Sealed the 30th September 1876, and dated the 15th May 1876
PROVISIONAL SPECIFICATION left by the said Thomas William Cole and
Paul Edward Cashin at the Office of the Commissioners of Patents on the 13th
May 1876.
THOMAS WILLIAM COLE, of Walthamstow, in the County of Essex, and PAUL
EDWARD CASHIN, of York Road, in the County of Middlesex. "AN IMPROVED
ELECTRO-MAGNETIC ENGINE FOR OBTAINING MOTIVE POWER."
The object of our Invention is the construction of an improved electro-magnetic
engine, whereby the electricity generated by the battery is utilized to a much
greater extent than hitherto, thereby producing a greater amount of power, and
rendering our improved engine applicable for driving machinery in an economical
manner.
The improved engine or machine is constructed as follows:-We employ a driving
shaft provided with a suitable crank, and around this shaft at suitable distances
apart we arrange a number of electro-magnets for obtaining the necessary power.
The magnets are so fixed as to radiate from the centre of the driving shaft, and
fitted in front of each magnet is a keeper or armature having a certain amount of
free movement. Each keeper or armature is attached to the said crank by means
of a connecting rod, such rods being slotted or grooved at their ends, and in these
slots the crank pin has a free movement, so that each magnet acts alternately by
means of its rod, thereby producing a rotation of the driving shaft. The contact
is made and broken as required, and the engine governed by suitable known means.
Any suitable battery may be employed for working the said engine.
This improved engine may, if found desirable to avoid noise and to utilize battery
forco, be enclosed within a suitable casing, from which the air may be exhausted by
air pump worked by the engine itself.
an

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas William Cole and Paul Edward Cashin in the Great Seal
Patent Office on the 15th November 1876.
THOMAS WILLIAM COLE, of Walthamstow, in the County of Essex, and PAUL
EDWARD CASHIN, of York Road, in the County of Middlesex. "AN IMPROVED
ELECTRO-MAGNETIC ENGINE FOR OBTAINING MOTIVE POWER"
The object of our Invention is the construction of an improved electro-magnetic
engine, whereby the electricity generated by the battery is utilized to a much
greater extent than hitherto, thereby producing a greater amount of power, and
rendering our improved engine applicable for driving machinery in an economical
manner,
The improved engine or machine is constructed as follows:-We employ a driving
shaft provided with a suitable crank, and around this shaft at suitable distances
apart we arrange a number of electro-magnets for obtaining the necessary power.
The magnets are so fixed as to radiate from the centre of the driving shaft, and
fitted in front of each magnet is a keeper or armature having a certain amount of
free movement. Each keeper or armature is attached to the said crank by means
of a connecting rod, such rods being slotted or grooved at their ends, and in these
slots the crank pin has a free movement, so that each magnet acts alternately by
incans of its rod, thereby producing the rotation of the driving shaft. The contact
is made and broken as required, and the engine governed by suitable known means.
Any suitable battery may be employed for working the said engine.
This improved engine may, if found desirable to avoid noise and utilise battery
force, be enclosed within a suitable casing from which the air may be exhausted
by an air pump worked by the engine itself.
In a modification of our improved electro-magnetic engine we arrange the magnets
in two rows, and employ a driving shaft having a number of cams or cranks
arranged spirally round the same, in which case the contact maker is of a spiral form,
with a pitch corresponding with the distance apart of the said cams or cranks. We
also employ keepers of peculiar construction, as herein-after described.
But to make our Invention better understood we will now proceed to describe
the saine by reference to the accompanying Drawing, in which-
Figure 1 is a front elevation, and Figure 2 a back elevation of our improved
electro-magnetic engine, in which the magnets are arranged radially round the
driving shaft.
Figure 3 a plan, Figure 4 a side clevation, and Figure 5 an end view of the
modified construction of the engine.
Figures 6, 7, and 8, details of our improved construction of keepers.
I
In Figures 1 and 2 A is a bed plate, to which is fixed a vertical plate B by means
of brackets C. To the plate B are bolted the electro-magnets D, eight of which are
shewn in the Drawing, but this number may be varied. E, E, are the keepers, one
for each magnet. One end of each keeper is hinged to a pin F, the other end being
jointed at G to its corresponding slotted connecting rod shewn by the letter H;
is the crank pin of the driving shaft passing through the slots of the connecting
rods;
J is the fly wheel; K, K, are insulated brass plates connected by the wires
L, L, to the magnets; M is the contact maker connected to the terminal N. The
other terminal is shown at O, and is connected with all the magnets; P, handle for
connecting or disconnecting the electricity from the battery. The engine is regulated
by any suitable governor, not shewn in the Drawing. From this construction of
engine it will at once be seen that each magnet successively pulls direct on the
crank at its greatest pivot of leverage, and during the strongest part of such pull,

page_text: thereby utilizing the battery power to a much greater extent than has hitherto
been effected.
In the modified construction of machine shewn in Figures 3, 4, and 5, wo employ
a bed plate, to which a number of magnets are fixed. A shaft with a number of
cranks corresponding with the number of magnets is fixed in suitable bearings. A
pivotted or hinged keeper is fixed in front of each magnet, and the connecting rods
are cither grooved or jointed, or have a sliding motion past the keepers, the
arrangement of the magnets being such as to successively pull on tho driving shaft,
ns in the arrangement shown in Figures 1 and 2. A is the bed of the engine; B
shews the electro-magnets; C, C, the keepers hinged or pivotting on the pins D;
E, E, are the connecting rods, the upper ends of which pass over their corresponding
cranks on the driving shaft F, such cranks being arranged spirally around the
shaft, as shewn in Figures 3 and 4. The lower ends of the rods pass through
holes G in tho keepers C; H, H, are the standards carrying the driving shaft F ;
and I is the fly wheel; J is the spiral contact maker; K, K, are insulated springs
connected with the magnets; L is the terminal connected to the contact maker J;
and M the terminal connected to the magnets B; N is the governor working a
non-conducting lever O, carrying metallic plates from one wire of each magnet ;
P show the corresponding plates supported on springs from the other wires of the
magnets.
The action of the modified construction of engine is substantially the same as
that herein-before described.
In this construction of engine the magnets may if required be constructed so as
to operate on both ends of the keepers.
Wo sometimes employ a toothed wheel or drum fixed. on a fly wheel shaft sup-
ported in suitable bearings. One or more pair or pairs of magnets is or aro fixed
to suitable brackets, and provided with keepers working on pivots. Attached to
each keeper is a connecting clutch fitting or gearing into the teeth of the wheel or
drum so as to give motion to the same, or instead of teeth a clutch or dog may be
used.
Figure 6 shews a perspective view of our improved sliding keeper, in which a
lever projecting piece o works inside a bridge b; Figure 7, plan and section of
what we call our improved telescopic or drop-down keeper operating by its own
weight; and Figure 8, plan and side view of our improved hinged keeper.
Having thus described our Invention, and the best means with which we aro
acquainted for carrying the same into effect, we wish it to be understood that wo
do not confine ourselves to the precise details herein laid down and shown in the
Drawing, as the same may be varied without departing from the peculiar character
of our Invention; but what we do claim and intend to be protected by the herein
in part recited Letters Patent is,―
Firstly. The general arrangement and construction of the improved electro-
magnetic engine, operating substantially as herein-before described and represented
in Figures 1 and 2 of the accompanying Drawing.
Secondly. The general arrangement and construction of the modified construction
of engine shewn in Figures 3, 4, and 5 of the accompanying Drawing, and operating
substantially as described.
Thirdly. The construction and employment of a spiral contact maker in combina-
tion with cranks arranged spirally around the driving shaft, as herein-before
described and shewn in Figures 3, 4, and 5 of the accompanying Drawing.
Fourthly. The construction and employment in electro-magnetic engines of the
improved keepers shown in Figures 6, 7, and 8 of the accompanying Drawing.
Fifthly. The arrangement of the lever carrying the the metallic plates for regulat-
ing the speed and power of the engine in combination with any suitable governor, as
herein-before described and shewn in Figures 3, 4, and 5 of the accompanying
Drawing.

page_text: Sixthly. The arrangement of engine in which a direct pull is obtained from the
magnets on the periphery of a wheel or drum, as herein-before described.
In witness whereof, I, the said Thomas William Cole, for and on behalf of
myself and the said Paul Edward Cashin, have hereto set my hand and
seal, this Fourteenth day of November, in the year of our Lord One
thousand eight hundred and seventy-six.
Witness,
G. F. REDFERN,
Patent Agent,
4, South St,
Finsbury,
London.
THOMAS WILLIAM COLE. (L.S.)