Improvements in or connected with Tramway and other Cars or Vehicles, and in the Propulsion and Lighting of the same by Electricity.
Year: 1895

page_text: Date of Application, 11th May, 1895-Accepted, 9th May, 1896
COMPLETE DEBOLIGATION.
Improvements in or connected with Tramway and other Cars or
Vehicles, and in the Propulsion and Lighting of the same by
Electricity.
I, ARCHIBALD 11. BRINTNELL, of 10 Catherine Street, in the City of Toronto,
in the County of York, in the Province of Ontario, Canada, Electrician, 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.
My invention relates to improvements in electric propulsion of cars and the
object of the invention is to devise a simple, efficient, safe and economical system
in which there will be no ground curient, practically no magnetic leakage, no over-
head poles with exposed wires and consequently no short circuits, no possibility of
burning out aud in which any desired voltage may be used without danger and it
consists essentially of a system in which the motor is composed of drum amatures
connected to the car wheel axles and of field magnets located at requisito distances
apart, between the rails of the track, the drum armatimes being designed to be
magnetically brought into rolling contact with the held magnets successively, 80 as
to draw the car forward or real ward as desired, switch mechanism being also
provided for throwing the current into and out of the field magnets and the parts
being otherwise constructed as hereinafter more particularly explained.
Fig. 1, is a longitudinal section through a car and portion of the road-bed on a
much reduced scale
Fig. 2, 18 a plan view showing the major portion of the trucks and the arrange-
ment of the magnets and switch-boxes in the road-bed.
Fig 3, 13 n cross section through the line e-f Fig. 2.
Fig 4, is a longitudinal sertion of the switch-box though the line a-b Fig. 5.
Fig. 4, is a perspective view of the yielding contact plate cliam operated by the
travellers on the car.
Fig. 4, 18 an end v.ew of the plate chain.
Fig. 4, is a cross section through the chain showing the manner of fastening on
the leather wrapping.
Fig 5, is a sectional plan through the line c-d Fig. 4.
Fig. 6, is a detail of au alternative form of switch operating mechanisin and
travellers.
In the drawings like letters of reference indicate coresponding parts in each
figure.
A, is the body of the car, B, the cross timbers, C, the longitudinal timbers,
D, the four wheel truck frames, E, the outer two wheel truck frames, and, F, the
central two wheel truck frame. The four wheel truck frames are pivoted on the
cross timbers, B, by the king bolts B', and portion of the weight of the car is
supported through them upon the semi-elliptical springs, 133 (see Figs. 1 and, 2).
The trucks, E, E, serve also to support portion of the weight of the car by means
of the elliptical springs, El, which have journnlled between them and on the top of
then on the cross rods, E, the roller, Es, upon which the end cross plates, B³, rest.
The remaining portion of the weight of the car is supported upon the central
truck, F, by the rollers, F, which are secured on a spindle journaled in bearings
upon the top of the elliptical springs, F.

page_text: G, are the drum armatures which are secured in pairs upon each of the axles, H
Each pair of armatures is secured to each axle one towards each end and equi-
distant from the ends of the axle. All the drum armatures are of the same
diameter and are equi-distant from each other throughout the length of the car and
approach in close proximity to the surface of the road-bed, so as to have a rolling
contact upon the horse shoe held magnets, I, the ends of the cores of which are
preferably exactly the same width as the peripheral faces of the drums and are
arranged to come exactly in the path of the same as the drums are attracted to the
ends of the cores as hereinafter more particularly explained.
The end trucks, E, are connected by triangular plates, J, to the four wheel
trucks, one apex of the triangular plate being pivotally connected by a bolt, j, to
the truck, D, and the other apexes being securely held to the cross bar of the
truck, E, by bolts, '. As the trucks are at a short distance apart this connection
permits of the free swing of the eud trucks as they go around a curve, the
roller, E, serving still to partially support the car as they move under the cross
plates, B.
The central truck, F, has two substantially triangular frames, K, located
opposite each other in the central portion of the fiame. The frames, K, consist of
an upper and lower plate in which are journalled the friction rollers, k, shown
partially by dotted lines and full lines in Fig. 2. K¹, 18 a 1nd, which extends
through the rollers. The frames, K, are pivotally connected by bars, K, to the
pivot bolts A, at the inner ends of the trucks, D. The 1od, K1, is supported in
eye-bolts, A', within the openings of the frame, K, as indicated.
It will thus be seen that in going around a curve as indicated in Fig. 3, that the
central portion of the frame namely the triangular frames, K, and connecting
bars, K, will be permitted of a longitudinal movement by the frames, K, being
caused to move inwardly, the friction rollers passing along the bar, K. When
the car reaches a straight portion of the track it will be readily seen that the
frames K, will move outwardly.
L, 18 a metal rod extending from end to end of the car and connected by a
universal joint, 1, at each end to a square bai socket, L', (seo Figs 1 and 2).
L', is a rod which extends into the bar socket L', and is connected by a universal
joint,, to a spindle, 12, Journalled in the bracket, l, secured to the bottom of the
car., is a bevel pinion secured in the outer end of the spindle, 1. The bevel
pinion,, meshes with the bere! pinion, l, secured on the lower end of the 101, 1º,
which is provided with a crank handle, . The rod, L, 18 universally jointed and
is supported at intervals in bearings, M, secured to the central portion of the truck
frames. N, are double arm travellers pivoted on the rods n, jourualled in the
hanger bearings, n', secured to the bottom of the truck frames. The rod, n, in each
case comes directly underneath the centre of the axle. The double arm tiavellers
are preferably provided with friction rollers, 2, and are connected at each end by
chains, n, to the rod, L. The double arm tiavellers are placed in such position
throughout the length of the car that the chain attached at the same end of ench
traveller throughout is partially wound upon the rod, L, so that all the coi re-
sponding ends of the tiaveller are raised The lower end of each traveller when
in working position is always in close proximity to the ground. The upper ends of
the chain, n, are nound around in the reverse dicction on the rod, L, so that
when the crank handle, l, is turned, one end of each pivoted traveller will raise
and the other lower When the tiaveller is horizontal it is out of the working
position. By turning the crank handle still more the opposite end of the traveller
to that shown in the diawing would be thrown down to proximity to the ground.
The ends of the travellers which are in close proximity to the ground operate to
propel the car in the direction to which these ends are downwardly mehued as will
be understood from what is hereinafter described.
The travellers operate the switch mechanism contained in each box, O, the f
peculiarity of construction of which and the operation of the switch contained
therein, so as to throw the current into the held magnets I shall now describe.

page_text: The upper part of the box, O, is comprised of two circular flanges, O', and, O',
which are integrally formed, abut against each other, and extend beyond the width
of the rectangular lower portion of the box as indicated by dotted lines in Fig. 2,
and full lines in Figs. 3 and 4. O, 18 a circular metal plate which fits within the
circular flange, O', and is provided with a downwardly extending vertical ring
flange, o, which fits within an annular recess, o', of a greater width than the flange
Between the inner and outer sides of the vertical flange, o, and the sides of the
recess I insert a rubber or flexible tube packing, o', which is compressed nearly flat
when the vertical flange is inserted in the recess and thus serves to form a spring
packing which is perfectly water tight. The plate, O³, 1 fasten down by
screws, 03, which extend partially to the edge of the Hange, O', and partially
into the circular plate, O.
The circular flange, 0, has a ring, O4, fitting within it, which has a downwardly
extending flange, o, fitting within a recess, o, in the flange, 0' 0, is a circular
piece of leather or other flexible material formed up as indicated and completely
covering the circular opening within the ring, 04 The recessed edge, 0', is held
within the recess, o, by the downwardly extending flange, o', forming part of the
ring, O, so that the opening is perfectly water-tight O, is a cap plate formed in
two parts, the concentric edges of which extend over the circular flange, 0.
The straight passage-way, O, is formed between the two portions
07, 19 &
circular plate with a convex top which fits within a corresponding space formed
underneath both portions of the cap plate, O³.
P, is a plato chain bridge pivoted by the trunnions p, at each end in elongated
holes, pl, formed underneath the cap plates at the edges of and towards the ends of
the passage-way, 0° The chain, P, is comprised of acveral links, P¹, which have
upwardly extending sides, p. Each plate is connected to its adjacent one by
tiunmons, which fit into recesses, p, in the adjacent plate P', is a flexible
yielding cover of leather or other suitable material which is brought underneath
and up the sides of the cham, P, throughout its length and is fastened by means of
teats, p, which when the leather is being put on are bent down in the position
shown at the left hand side of Fig. 44, and at the right hand side of Fig. 4º, the
points of the tents, p, extending through the leather, which is forced over the
teats. When the leather has been placed in position over the teats from end to
end such teats are bent up into the position shown at the right hand side
of Fig. 44, and at the left hand side of Fig. 4, so that the outer sides of tho teats
are flush with the outer side of the leather The leather covering, P, formed and
secured in position as above described is for the purpose of preventing any foreign
matter getting down in the passage-way, O, and yet permit of the free movement
of the cham as caused by the traveller as hereinafter described
Q, is a plate secured on the top of the vertically moving block, Q', by means of
a bracket, g, bolts, q', and, q', as shown. The block, Q', is pivotally connected by
the huks, Q, to the vertical block, Q, which is bolted to the side of the
rectangular box or casing, O. R, is a spiral spring connected at the upper end to
the hook, q, attached to the vertical block, Q, and at the lower end to the
hook 9, attached to the vertically moving block, Q. Q, is a buffer secured to
the bottom of the casing and is designed to limit the downward throw of the
block, Q. There are two pairs of links, Q, one of cach pair extending on each
side of the blocks, Q', and, Q³. The lower pairs of links or more properly
levers, Q, extend beyond the pivotal connection to the block, Q', the ends being
pivotally connected by a pair of links, S, to the short arm of the lever T, pivoted
on the pin, t, extending out from the bracket, T. The lever, T, 13 of insulating
material and has pivoted on a pin, t', extending through it two carbon rollers, ‹³,
one at each side.
U, U, are quadrantal contact plates secured at each side of the lever T and
fastened at the bottom by the screws, ", and, u', to insulating plates u³, and, u,
secured to the bottom of the box. 4, is an insulating block secured by a screw,
to each quadrantal strip, U' It will be notice that the quadrantal strip, U', 18

page_text: '
1
farther from the strap, U, at the lower portion and that in the dip where it recodes
from the strip, U, I secure a bevel carbon contact block, U³.
Upon the end of the long aim of the lover, T, I secure semi-loop-shaped metal
contact stups, T2, which are designed to be successively brought in contact from
'bottom to top with the commutator sections, V, of the resistance coil, V1, which
are connected to them as shown. The commutator sectious are in quadrantal
form and are secured to the insulating standard plates, " v, are horse shoe
magnets which bridge the two lower commutator sections on each side and have
wires, v, passing from the one section to the other around the horse shoe magnets.
These magnets, ', are designed to blow out the arc formed by the loop shaped
metal contact strips, T', between the two lower sections as they descend as herein-
after explained.
2, and, 3, are the positive and negative wires of the main circuit which pass
through a conduit preferably comprised of boards, 4, and, 5, placed together as
shown. The bottom end of the horse shoe magnet 1, is enclosed by a casing, I',
which extends around the bottom and two sides of the lower portion of the maguet
and up as far as the enclosed magnet coils, 1*.
Iare cross bais with convex inner
Bides extending across the corners of the core of the magnets on the inside,
and, ', aie lugs formed parallel to these cross bars on the casing, I., are bolts
Becuring and binding the casing and cross bars together, so as to keep the casing
close up to the core of the magnet Between the cross bare, 13, is an open space
above the core of the magnet, which I preferably fill with pitch or other
Insulating and water proof material, so as to prevent the core from becoming
rusted.
In Fig. 4, the negative wire, 3, is shown in the broken section of the
conduit, 4, 5. A bianch wire, 6, leads from the wire, 3, to the binding screw, u,
securing the bottom of the quadrantal plate, U, on this side of the lever, T.
A wire, 7, leads from the binding screw, u, at the bottom of the quadrantul
plate, U, on this side through the tubular conduit, 8, magnet coil, 13, back through
the conduit, 8, to and through the several commutator plates, V, and resistance
coils, V¹.
Upon the opposite side the wiring leading from the positive wite, 2, 18 exactly
similar (see Figs. 3, 4, and, 5).
It will now be seen that when the travellers, N, are in the position shown
in Fig. 1, that when the fiction 1oller, ', of each tiavelle reaches the circulai
divided plate, O', and passes along the passage-way, O, it being in close proximity
to the ground will ride upon the chain budge and press it downwardly, thereby
throwing down the vertical block, Q, tilting the double atm, Q, on its pivot
thereby throwing up the long end of the lever, T, over the commutator sections
and at the same time throwing the carbon contact rollers, t, against the carbon
contact blocks, Us, thus electically bridging the quadrantal plates, U, and, U¹,
from the period that the rollers, t, reach the carbon blocks, U*, until the lever
is thrown its full swing, thus gradually throwing in the cent through the
commutator sections, V. The current will pass during this period from the
positive wue, 2, through the wire, 6, quadrantal plate, U, contact rollet, t³,
quadrantal plate, U', wue, 7, through the magnet coils on the opposite sido to that
shown in Fig. 4, back to the commutator sectious and resistance coils thence by the
loop-shaped strips, T, to the opposite commutator sections and resistance coils V,
and, V, thence by the wire, 7, through the other magnet coil then back to the
other quadrantal plate, U, carbon roller, t, and quadiantal plate, U, and wite, 6,
to the negative wire, 3, as shown in Fig. 4. The effect of the current passing
through in the course above described is to magnetize the cores, I, and cause them
⚫to exert a magnetic pull upon the drum armatures, G, in immediate proximity to
the left of such magnet. In this instance the acting magnets would be the third
from the left as shown in Fig 1.
I
•
The operation of the successive travellers. from left to right in throwing in each
switch is exactly identical and the drum armatures are so spaced in relation to the

page_text: magnets that the switch mechanism between the magnets two at a time will
successively cause the magnets, 1, to exert a pull upon the drum armatures from.
left to right, so as to cause the car to travel in the direction indicated by arrow.
When the travellers are tilted in the opposite direction it will readily be under-
stood that the operation of the switch mechanism for magnetizing the magnets will
cause such magnets to exert the same pull in the opposite direction and thus propel
the car in such direction.
In Fig. 6, I exhibit an alternative form of travellers in which I provide hoise
shoe magnets, W, secured to the double arm traveller. A perfectly plane circular
top, O, flush with the road-bed 13 provided to fit within the circular flange, O'.
Instead of the mechanism shown and described as to the formor figures used in
connection with the rollers on the travellers I provide the following X, is a
hinged plate preferably of soft iron pivoted at one end at, z, and having a stop, 2,
underneath the opposite end to prevent its falling too far ³, 18 a rod connected
to a lever,, pivoted at, .
Y, is a mercury cup situated underneath the bent end of the levor, y, is a
bent strip, which extends into the mercury cup at one end and under the binding
screw, y, at the other, which binding screw is secured to an insulating plate, y³.
The binding scrow is connected by a wire, y to a solenoid, Z, and passes out
therefrom to the positive wire, 2, as indicated by the partially full lines and
partially dotted lines in this figure. y, 18 a wire leading from the negativo wire, 3,
to the end of the lever, . The plunger, z, of the solenoid, Z, 18 connected by a
link, z', to the lever, T
The operation of this magnetic form of switch mechanism is as follows. As the
horse shoe magnet comes into proximity with the circular plate, 08, above the
hinged plate, X, the said hinged plate is caused to rise, thus throwing the end
of the lever, into the mercury cup, Y, and completing the circuit through the
wire, y', the solenoid, Z, wire, y, binding post, y', metal strip, y, mercury cup, Y,
lever, and wire, y, to the negative wire, 3, thus causing the plunger of the
solenoid to move downwardly and throw the lever upwardly in the manner herein-
before described, so as to throw the current into the horse shoe magnets, I, which
will operate in the mauner set forth to attract the drum amatures and cause them.
to have a rolling contact over the ends of the cores of the magnets.
In order to provide for the lighting of the car I provide a coil, g, around the
hub of each drum amature and connected by a wire, g', to the drum and the
opposite end of the wne of the coil to a metallic ring, g, insulated from the shaft
by the insulating ring, ³. I also provide brushes, 9ʻ, which are suitably supported
ou the truck, are held in contact with the metallin ring, 9, and are connected by
wires, g, to the wires, g³, which run up through the car to the lamps The current
induced by the magnetism in the drum aimature is for the purpose of lighting the car.
Having now particularly described and ascertamed the nature of my said inven
tion und in what manner the same is to be performed, I declare that what I
claim 18-
1. A system for electrical propulsion of cars comprising a motor, the armatures
of which consist of a series of pairs of diums connected with the axles of the car
and the field magnets of which are located in the road-bed and substantially flush
therewith and are designed to exert a magnetic pull on the drum armatures through
the current successively switched into them, so that such drum armatures will have
a rolling contact over the magnets as and for the purpose specified.
2. A system lor electrical propulsion of cars comprising a series of pairs of drum
Armatures secured on the axles of the car, which are located equi-distant from each
other, a series of field magnets the tops of the cores of which are substantially flush
with the road-bed in the paths of the drum armatures and are equi-distant from
each other, a series of travellers pivoted directly beneath the axles of the cars and
designed to co-act with a commutator switch suitably cuclosed and having the top
substantially flush with the road-bed to close the main circuit through such field

page_text: !
magnet as the drums approach the ends of the cores as and for the purpose
specified.
3. The combination with the magnets situated in the road-bed aud substantially
flush therewith and the armatures designed to have a rolling contact with the ends
of the magnets as specified, of pivoted travellers corresponding in number to the
drun armatures, a switch-box and co-acting mechanism in the same operated by
cach successive traveller to throw in the switch and cause the current to travel
from the main wire through the magnets ns and for the purpose specified.
4. The combination with the magnets situated in the road-bed and substantially
flush therewith and the armatures designed to have a rolling contact with the ends
of the cores of the magnets as specihed, of pivoted travellers ec responding in
number to the drum armatures a switch box piovided with a flexible chain bridge
designed to be depressed by the traveller as it passes over it and means wholeby
the depression of such chain of each successive switch box throws in the switch and
causes the current to travel from the main wires through the magnets as and for
the purpose specified.
5 The combination with the magnets situated in the toad-bed and substantially
flush therewith and the amatures designed to have a rolling contact with the ends
of the cores of the magnets as specified, of pivoted travellers corresponding in
number to the drum armatures, a switch box and mechanism co-acting with the
travellers and meaus for holding the corresponding ends of the travellers at the
same time in proximity to the ground as and for the purpose specified
6. The combination with the magnets situated in the road-bed and substantially
flush therewith and the armatures designed to have a rolling contact with the enils
of the cores of the magnets as specified, of pivoted travellers corresponding in
number to the drum armatures, a switch box and mechanism co-acting with the
travellers and a universally jointed 1od extending from end to end of the car and
connected by chains to both ends of the travellers and means for turning such rod
as and for the purpose specified.
7 The combination with the magnets situated in the road-bed and substantially
flush therewith and the amatures designed to have a rolling contact with the ond
of the cores of the magnets as specified, of pivoted travellers corresponding in
number to the drum armatures, a switch box and mechanism co-acting with the
travellers and a universally jointed 1od extending from end to end of the car and
connected by chams to both ends of the travellers and the square bar socket, L',
squaro rod, L³, universal joint, l', spindle, P, bevel pinions 1, 1, rod, l, crank
handle,, all arranged as and for the purpose specified.
8. The combination with the cat provided with armatures and the road-bed
provided with inagnets, the ends of the cores of which are flush therewith, of the
travellers, flexible cham budge supported upon the spring-held block, Q, and
connected by links, Q', to the block, Q, the links, S, lever, T, provided with
carbon rollers, t, at each side, the two pairs of quadrantal platos, U, and, U',
insulated from each other and electrical connections from the main circuit wires to
the quadrantal plates, U, and from the quadrantal plates, U, to and through the
magnets as and for the purposo specified.
9. The combination with the car provided with armatures and the road-bed
provided with magnets, the ends of the cores of which are flush therewith, of the
travellers, flexible chain bridge supported upon the spring-held block, Q', connected
by links, Q, to the block, Q, the liuks, S, lever, T, provided with carbon rollers,,
at each side, the two pairs of quadrantal plates, U, aud, U', insulated from each
other, the carbon blocks, U2, situated in the depressions of the quadrantal plate, UI,
and electrical connections from the main circuit wires to the quadrantal plates, U,
and from the quadrantal plates U¹, to and through the magnats as and for the
purpose specified.
10. The combination with the car provided with armatures and the road-bed
provided with magnets, the ends of the cores of which are flush therewith, of the
travellers flexible chain bridge supported upon the spring-held block, Q', conuected

page_text: by links Q, to the block, Q, the links, S, lever, T, provided with carbon rollera,,
at each side, the two pairs of quadrantal plates, U, and, U', insulated from each
other, the metal loop-shaped contact strips, T, on the end of the lever, T, the
commutator sections, V, and resistance coils, VI, and electrical connections from
the main circuit wires to the quadrantal plates, U, and from the quadiautal
plates, U, to and through the magnets as and for the purpose specified.
11. The combination with the car provided with armatures and the road-bed
provided with magnete, the ends of the cores of which arc flush therewith, of the
tiavellers flexible chain bridge supported upon the sping held block, Q', connected
by links, Q, to the block, Q, the links, S, lever, T, provided with carbon rollers, (2,
nt each side, the two pairs of quadiantal plates, U, and, U, insulated from cach
other, the metal loop-shaped contact strips, T2, on the end of the lever, T, the
commulator sections, V, and resistance coils, V₁, and the horse shoe magnets
having the two poles opposite the two lower commutator sections, and electrical
connections from the main encuit wies to the quadrantal plates, U, and from the
quadrantal plates, U', to and through the magnets as and for the purpose specified.
12. The combination with the car provided with armatures and the load-bed
provided with magnets, the ends of the cores of which are flush therewith, of the
travellers, flexible chain budge supported upon the spring held block, Q', connected
by links, Q, to the block, Q, the links, S, lever, T. provided with carbon rollers, t³,
at each side, the two paus of quadiantal plates, U, and, U', insulated from each
other, the metal loop shaped contact strips, T, on the end of the lever, T, the
commutator sections, V, and resistance coils, V', and the house shoe magnets
having the two poles opposite the two lower commutator sections, the wires, 6,
connecting the positive and negative wies of the main en cuit to their corresponding
quadrantal plates, U, the wires, 7, leading from the quadrantal plates, U, to and
through the coils of the horse shoe magnet, I, and through the commutator
sections, V, and resistance coils V', as and for the purpose specified
13. The combination with the armatures, magnets, and travellers, of the divided
cap plate, O, provided with a straight passage-way, O, and the flexible chain
bridge, P, forined and held by trunnions at each end and switch mechanism operated
therefiom as and for the purpose specified.
14 In a system such as described the combination with the switch box having
the cap plates, O, and central passage-way, 0%, of the chain, P, each link of which
has upwardly extending sides and is connected to the adjacent link by trunnions
extending inte holes in such link as and for the purpose specified.
15. In a system such as described the combination with the switch box having
the cap plates, O', and central passage-way, O', of the chain, P, each link of which
has upwardly extending sides and is connected to the adjacent link by trunnions
extending to holes in such link and a leather covering extending around the
bottom and sides of the chain and held in position thereto by the teats, p³, as and
for the purpose specified
16. In a system such as described the switch box provided with the cham bridge
located as specibed, of the circular flange, 0, circular ring, O', with downwardly
extending flange, o, the circular leather and the spring-held vertical block, Q', and
its connections all operating as and for the purpose specified.
17. In a switch box for the purpose specified, the combination with the top
circular Hanges of a circular plate provided with downwardly extending flange, o,
fitting within a recess, o¹, and a flexible tube packing, o³, inserted in the recess as
and for the purpose specified.
18. The combination with the drum armatures and magnets arranged ns <pecified,
of the coils, g, connected to and supported upon the bubs of the drum armatures
and means for carrying the induced current hom the coils to the lamp circuit as
and for the purpose specified.
19. The combination with the drum armatures and magnets arranged as specified,
of the coils connected to and supported upon the hubs of the drain armatures and
connected by wires to metallic rings insulated from the shaft and the brushes, y*,

page_text: suitably supported on the trucks and connected by the wires, 9', to the lamp-circuit
as and for the purpose specified.
20. The combination with the horse shoe field magnets formed as specified, of
the casing, 1, cross bars, 13, lugs, 1, and bolts, , as and for the purpose specified.
21. The combination with the magnets situated in the road-bed and substantially
flush therewith and the armatures designed to have a rolling contact with the ends
of the cores of the magnets as specified, of pivoted travellers provided with horse
shoe magnets at each end and a switch box having a plate hinged beneath the top
and connecting mechanism between such plate and the lever, T, for throwing in the
current as and for the purpose specified.
22. The combination with the magnets situated in the road-bed and substantially
flush therewith and the armatures designed to have a rolling contact with the ends
of the cores of the magnets as specified, of pivoted travellers, N, provided with
horse shoe magnets, W, switch box, O, provided with a top, 0, plate, X, hinged
beneath the top, stop, e', rod, a', lever,, mercury cup, Y, bent strip, y, binding
post, y', wire, y, solenoid, Z, having its plunger, z, connected by the link, 2', to the
lever, T, and wire, y', the wires, y', and, y, being connected to the main circuit
wires as shown and for the purpose specified
1
...
1005
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.