Year: 1888

page_text: Date of Application, 20th Mar., 1888
Specification Accepted, 4th May, 1888
A communication from JAMES FRANCIS MCLAUGHLIN, of Philadelphia, State of
Pennsylvania, United States of America, Electrician.
1, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
M.I.M.E. 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 a new and improved electro-mechanical movement, and
has for its object to utilize the attractive power of electro-magnets to impart a
reciprocating or vibratory motion to a fulcrumed lever, which latter motion may be
transmitted into a rotary or other movement as may be desired.
With this end in view, the invention consists in a certain organization of apparatus
comprising details of construction, arrangements and combinations of parts which will
be more fully described hereinafter.
Referring to the accompanying drawings:-
Fig. 1, is a top plan view of this invention.
Fig. 2, is a side elevation thereof.
Fig. 3, is a top plan view of a modification, in which two contact springs are
employed and the motion is imparted direct to the driving shaft.
Fig. 4, is a top plan view of a modification, in which the magnet cores are formed
so as to represent both poles to the armature."
Like numbers of reference indicate like or corresponding parts in the several views
of the drawings.
Referring to the drawings by numbers.
1, designates a base-plate constructed of wood or other suitable material, and
rectangular in form as shown.
Secured upon the said base 1, near one end thereof, are two electro-magnets, 2
and 3, arranged in line with their poles adjacent to, and at a predetermined distance
from each other.
Firmly attached to the base 1. near the said magnets is a standard 4, upon which is
pivoted a metallic lever 5, having its shorter end 6, arranged to oscillate between the

page_text: poles of the magnets 2, 2 and 3, and adapted to be attracted thereby when the latter
are energized by the passage of an electric current through their helices.
To the opposite end of the lever 5, is pivoted one end of a link 7, the other
extremity of which is pivoted to the shorter arms of a second lever 8, supported and
free to oscillate upon a standard 9, secured to the base 1.
A connecting link 10, is pivotally attached to the longer arm of the lever 8, and
the opposite end of said connecting link is pivoted on the crank pin 11, projecting
upwardly from the circular disc 12.
Thus it will be seen that when the lever 5, is oscillated, as will be hereinafter
described, its motion will be imparted by means of the link 7, to the lever S, which
will, in its turn, impart a reciprocating motion to the connecting link 10, and thereby
revolve the disc 12.
The driving shaft 13, is firmly secured to the said circular disc 12, and passes
downwardly, therefrom through the hollow standard 14, and may be secured to a
rotary valve or other mechanism to be operated thereby.
Two metallic standards 15, 16, project upwardly from the wooden base 1, and have
their upper ends horizontally perforated and screw-threaded to receive the adjustable
conducting screws 17, and -18.
A conducting spring 19, is secured at its inner end to the forward extremity 6, of
the lever, and the said spring is free to oscillate with the said lever and make
contact alternately with the conducting points of the screws 17 and 18. A thin
platinum plate 19, is secured upon each side of the end of the spring 19, at the point
of contact with the conducting screws 17 and 18, for the purpose of preventing fusion
at the contact points.
Suitable cut-outs 20, and 21 are employed for breaking and making the circuits
when desired..
The device is operated by two electric batteries, 22 and 27, with their respective
circuits arranged as follows:-
Beginning with the battery 22, one pole of which is connected by means of the
wire 23, with the helix of the magnet 2, which, in turn, is connected with the metallic
standard 4, through the wire 24. The opposite polo of the said battery 22, is
connected through the wire 26, cut-out 20, and wire 25, with the standard 16, and its
conducting screw 18. Ono pole of the battery 27, is connected through the wire 28,
with the helix of the magnet 3, and then by means of wire 29, with the standard 4,
and its opposite pole is connected with the standard 15, and its conducting screw 17,
through the medium of the wire 31, cut-out 21, and the wire 30.
The metallic lever 5, being electrically connected with the standard 4, it will he
seen that when its conducting spring 19, is in contact with one of the conducting
screws, for instance 18-the circuit from the battery 22, will be closed at that point,
and the path of the electric current will be as follows:-
Starting from the battery 22 through the wire 23, magnet 2, wire 24, standard 4,
lever 5, conducting spring 19, screw 18, standard 16, wire 25, cut-out 20, and
wire 26, back to the battery 22; on the other hand should the spring 19, be in
contact with the screw 17, thereby closing the circuit from the battery 27, the path of
the current will be in the following direction.
Starting from the said battery 27, through the wire 28, magnet 3, wire 29,
standard 4, lever 5, conducting spring 19, screw 17, standard 15, wire 30, cut-out 21,
and wire 31, back to the battery 27.
From the foregoing it will be understood that when the conducting spring 19, is in
contact with either of the conducting screws 17, and 18, the electric current will be
closed through the magnet on the opposite side of the device from the conducting
screw in contact with the said spring 19, energising the said magnet to attract the
end 6, of the lever 5.
The operation of the invention is as follows:-
--
First we will assume that the conducting spring 19, is in contact with one of the
screws say 18-;.now if the circuits be closed by the insertion of the plugs in the
cut-outs, the current will simultaneously pass through the magnet 2, energising

page_text: the same and causing it to attract the end 6, of the lever 5; which action will
immediately draw the said end 6, towards the pole of the magnet 2, thereby operating
the lever 8, the connecting link 10, and the disc 12, as hereinbefore described. By
the time the spring 19, has broken contact with the screw 18, the several parts in
motion will have attained sufficient momentum to carry them across the intervening
space to the other extremity of their movement as indicated by dotted lines in Fig. 1.
Now, when the conducting spring 19, comes in contact with the screw 17, in the
latter position, the circuit will be closed through the magnet 3, energising same and
causing it to attract the end 6, of the lever 5, thereby drawing it back to the first
position, and rotating the disc 12, through one revolution.
The oscillations of the lever 5, and consequent revolutions of the disc 12, and
shaft 13, will be very rapid, and this movement will be particularly useful where a
high speed of revolution is required.
In Fig. 3, I have shown a inodification of the invention in which the magnets 2
and 3, the lever 5, and the circuits are arranged substantially the same as in the
foregoing description, the difference being that in the latter instance I employ two
contact springs 19, 19, provided with the points 32, 32, adapted to make contact with
the platinum plates 33, 33, secured upon the metallic standards 34, 34; and further, I
connect the link 10, directly with the lever 5, and thus obtain a more simple and
direct movement.
In Figure 4, I have shown one of the poles 35, 35, of each magnet extended and
brought up outside of the helices, parallel with the cores thereof, in proximity to the
end 6, of the lever 5, for the purpose of augmenting the force of the attraction by
presenting both poles of each magnet to the end 6, of said lever 5.
Having now particularly described and ascertained the nature of the said invention
as communicated to me by my foreign correspondent, and in what manner the same
is to be performed, I declare that what I claim is :-
1. The combination, with two poles of electro-magnets arranged opposite to each
other, as shown, of a pivoted metallic lever having one end passing between said poles,
contact points arranged in the same plane as the faces of their respective poles, and
the independent circuits respectively connected with the lever and with a contact
point, and plug cut-outs for electrically disconnecting the circuit to either or both
contact points, as specified.
2. The combination with two independent electric circuits, each including a contact
point, an electro-magnet or magnets, a source of electricity and a terminal common to
both circuits, of a conducting armature lever electrically connected with said common
terminal, pivoted so as to vibrate between poles of opposite polarity of" said electro-
magnets, and so arranged as to make or break each circuit by engagement with said
contact points, a suitable mechanism connected with said armature lever by a system
of levers, and arranged to be operated by the vibratory movement of said armature
lever.
3. The combination, with two independent electric circuits, each including a contact
point, an electro magnet or magnets, a separate source of electricity, and a terminal
common to both circuits; of a conducting armature lever electrically connected with
said common terminal, pivoted so as to vibrate between poles of opposite polarity of
said electro-magnets and so arranged as to make and break each circuit by engage-
ment with said contact points, respectively, at the extremities of its oscillations,
substantially as described.
ليوم
1
P 3.5
1 1000