APPARATUS, APPARATUSES, OR MECHANISM FOR PLACING DETONATING OR FOG SIGNALS ON THE RAILS OF RAILWAYS TO BE EXPLODED THEREON; AND FOR REMOVING THE SAME THEREFROM WHENEVER REQUIRED
Year: 1855

page_text: LETTERS PATENT to George Baring Locke, of Notting Hill, Kensington,
in the County of Middlesex, Railway Clerk, for the Invention of
"APPARATUS, APPARATUSES, OR MECHANISM FOR PLACING DETONATING OR FOG
SIGNALS ON THE RAILS OF RAILWAYS TO BE EXPLODED THEREON; AND FOR
REMOVING THE SAME THEREFROM WHENEVER REQUIRED
Sealed the 22nd April 1856, and dated the 5th November 1855.
PROVISIONAL SPECIFICATION left by the said George Baring Locke
at the Office of the Commissioners of Patents, with his Petition, on the
5th November 1855..
I, GEORGE BARING. LOCKE, do hereby declare the nature of the said Inven-
tion for "APPARATUS, APPARATUSES, OR MECHANISM FOR PLACING DETONATING OR
FOG SIGNALS ON THE RAILS OF RAILWAYS TO BE EXPLODED THEREON, AND FOR
REMOVING THE SAME THEREPROM. WHENEVER REQUIRED," to be as follows:-
The apparatus, apparatuses, or mechanism referred to consist of a box or
case containing a detonating or fog signal or signals (having suitable stems
or rods attached thereto), to be retained within such box or case when not
required for signalling, but which will be placed upon the rail or rails when
required by the person or persons in charge of the signals, acting upon wires,
levers, or communicators in connection with the detonators or fog signals

page_text: contained in such box or case, and so that they may be withdrawn from the
rail when required, thus allowing the box or case or boxes or cases to be
fixed at any desired place or places on the line, and to be actuated at any
given distance therefrom, and so as to place one signal or more on the rail at
required distances at the same time, and to allow them to be withdrawn from
the rail or rails into the box or case when danger is passed.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said George Baring Locke in the Great Seal Patent Office on the
5th May 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, GEORGE
BARING LOCKE, of Notting Hill, Kensington, in the County of Middlesex,
Railway Clerk, send greeting.
.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the. Fifth day of November, in the year of our Lord
One: thousand eight hundred and fifty-five, in the nineteenth year of Her
reign, did, for Herself, Her heirs and successors; give and grant unto me,
the said George Baring Locke, Her special licence that I, the said George
Baring Locke, my executors, administrators, and assigns, or such others as I,
the said George Baring Locke, .my., executors,, administrators, and assigns,
should at any time agree with, and no others, from time to time and at all
times thereafter during the term therein expressed, should and lawfully might
make, use, exercise, and vend, within the United Kingdom of Great Britain
and Ireland, the Channel Islands, and Isle of Man, an Invention for
"APPARATUS, APPARATUSES, OR MECHANISM FOR PLACING DETONATING OR FOG
SIGNALS ON THE RAILS OF RAILWAYS TO BE EXPLODED, THEREON, AND FOR REMOVING
THE SAME THEREFROM WHENEVER REQUIRED," upon the condition (amongst others)
that I, the said George Baring Locke, my executors or administrators, by an
instrument in writing under my, or their, or one of their hands and seals,
should particularly describe and ascertain the nature of the said Invention,
and in what manner the same was to be performed, and cause the same to
be filed in the Great Seal Patent Office within six calendar months next
and inimediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said George Baring Locke, do hereby
declare the nature of my said Invention, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the
following statement :-
'

page_text: Hitherto detonating, fog alarm danger or
or saluting signals (hereafter
termed "detonators") have been placed in position for signalling simply by
hand, involving delay and danger: Now, the object of this Invention is to
enable the same to be placed in position for signalling without, danger and
delay, by the intervention of suitable mechanism, as hereafter described, by
reference to the accompanying Drawings.
termed "detonators") have been placed in position for signalling simply by
hand, involving delay and danger: Now, the object of this Invention is to
enable the same to be placed in position for signalling without, danger and
delay, by the intervention of suitable mechanism, as hereafter described, by
reference to the accompanying Drawings.
: DESCRIPTION OF THE DRAWINGS.
Drawing No. 1.-Depositors of Detonating Signals, which I term Guards'
Depositors.
Fig. 1 represents a side elevation of certain apparatus for placing a
detonator upon the rail by pressure of a lever. A is a box or case protruding
through the bottom of the carriage or vehicle; B is a rod or handle.
communicating with a series of combined levers usually denominated lazy
tongs, around, the upper part of which rod is, a coiled spring 6, which serves
to press down the rod B and withdraw the apparatus into the box; the last
of, which levers has a holder (C) attached to it. This holder retains the
detonator by the aid of a small lever clip, tightened by a spring, which is.
released by the action of the lazy tongs (see dotted lines) simultaneously with.
the action of the holder whilst fixing the detonator on the rail: An iron stay
A 1 is secured. to the axle box, and serves to prevent the apparatus.from.
partaking of the lateral motion of the vehicle caused by the combined action
of the springs and, hanging gear. This stay iron is carried: upwards .and:
between the parts *, It is slotted, so as to provide a guide for such of.
the fulcrum centre pins of the lazy tongs apparatus as have.projecting.studs
to travel in the slot; and at right angles to this slot is another slot, which.
extends from the horizontal part of the stay iron.*', and serves as a guide.for.
the working of the apparatus, its upper part being..hung, upon a spindle
passing through another slot in the said stay iron and through the box, and.
fixed to brackets or, supporters (see Fig. 2, A, provided in the carriage.or
vehicle, and this arrangement allows play to the stay iron. The detonator is
provided with suitable stems, for clipping the rail. (see Fig. 1),.shewn at half
full,size.
"G
... 1.
:
Fig. 2, cross section of the apparatus, shewing its position in the case; also
shewing the manner in which I purpose to connect the iron stay A' from one
side of the carriage or vehicle to the other, in order to provide a guide for
other apparatus, hereafter described,, which may be used with or substituted
for, the apparatus Fig. 1.

page_text: Fig. 3 is another application of the same principle of construction, which
may be used for placing a detonator under the wheel in front of the train, if
desirable. The case A is shewn as fixed to the life-guard iron of an engine;
the action is produced by means of a wire B actuating the lever C, às shewn.
Cord may be substituted for the wire, and be connected between the carriages;
similar to the ordinary mode of striking the hammer. on the gong or bell, for
the purpose of communicating between guard and driver. The detonator in
this case is drawn from the holder by the grip of the wheel upon the long
stem which is designed for that purpose, see Fig. 2ª, shewn half full size,
Fig. 4, sectional side view, and Fig. 5 a front view, of a box which is
designed to be suspended (when in use) from the break van or other vehicle
in the rear of the train to a suitable bracket rod, staple, or hook placed in a
direct vertical position over the rail or rails. A, the box, in which is a sliding
platform, and this box should be placed with the opening at B, opposite to the
course of the train, and traversing at right angles to the rail. C, the sliding
platform, which runs the whole length of the box, the ends of which slide
between two small guide rods D in a slanting position. The sliding platform,
with an angle iron back, which retains the detonator, is held in position by
two bent levers E, turning on centres F; theso levers are, held.in position
by a sliding bolt G, connected to a wire to the point of suspension.from the
vehicle. By. withdrawing the bolt the lever is released, which being attached
to elastic springs E¹ is jerked forward, thereby discharging the detonator in a
opposite direction to the motion, the effect of which is to neutralize the
friction which is produced by the velocity of the train, and allows the detonator
à perpendicular descent across the rail, as if projected downwards from a
stationary position, care being taken to select elastic or spiral springs of
suitable power to the velocity of the train, from which it might be deemed
advisable on ordinary occasions to place a detonator on the rail, to be exploded
thereon by a train advancing in the rear.. H is a flap cover to the sliding
platform, which releases the detonator as the arm I strikes against the stop K
when about to deposit the detonator on or across the rails: This platform of
itself forms a case to the detonator, and will allow of the use of an exterior
framework instead of the whole box being used, if. desirable. The detonator
for this purpose is provided with a long flexible stem, weighted at the end
(see Fig. 3), shewn at half full size), giving coloured lights and reports, united
or not.
Fig. 6 represents a guard's dropping depositor. A is a triangular box, the
front B being. hinged at. C, which is opened, if by hand, by a lever D, in
connection therewith, which allows detonator, Fig. 3, or a similar detonator

page_text: to be dropped on the rail; or the same may be suspended by the spindles E in
a slotted guide iron, as shewn at Figure 2*, 3, and projected slightly forward, so
that the bent lever F might come in contact with a striking plate, which would
propel the detonator forward in an opposite direction to the course of the train.
This latter mode will admit of its being used by a system of wires and pulleys,
as at Fig. 3.
Fig. 7 is a rod with a self-releasing apparatus, which would for use be kept
in a box or case, whereby detonator, Fig. 1", might be made to release itself
whilst being pressed on to the rail by a spring or buffing pressure, which may
be described as a telescopic action; the outer tube in the pressure sliding up and
releasing the straps from studs on the inner case, as shewn in the Drawing..
Fig. 8 is a sliding ram or rod, which would descend from a box or case when
in use, holding the detonators by sliding clips A till it is nearly in contact with
the rail, but would release itself, as shewn by the stops at B, when the iron or
hard stamper C might be struck hard enough to explode; the signal on the rail,
which might give report only, or light and report. Another modification of the
lazy tongs arrangement, shewn at Figs. 1 and 3, could be made by securing
the same in a box fixed to the horizontal part of stay iron A', and by fastening
one arm or lever so as to cause the levers to describe a curvilinear course at a
tangent. to the rail in an opposite course to the direction of the train, thereby
pressing the detonator to the rail, and neutralizing the effect of velocity by
pressure instead of being thrown on the rail, as by the apparatuses, Figs: 4

page_text: detonator B, placing' the same in position upon the rail ready to be discharged
if required. The detonators above, which descend by their own gravity, are
preserved in position by the rod until it returns to its position as shewn in the
Drawing, which it will do upon pulling back the chain by the "all right"
action, which raises the weight H, and the apparatus is again ready for use.
Under the detonators is shewn an extra case (dotted lines) which can be
fitted with a spiral spring, thus causing the detonators to rise into position
instead of descending, as shewn. In this self-feeding apparatus I have adopted
what appears to me the most simple and effective mode of self-feeding arrangé-
'ments, but I can adopt different modifications of the self-feeding coining, medal,
and die-stamping machine. The stems L'of the detonators B in this case is
formed into a suitable socket for the rod or ram to enter; but it will admit of
many variations, so that the case or tube A be made of a shape suitably to the
form of detonator and steni used for a self-feeding action. By keeping the rod
below the surface of the rail and removing platform K, the rod may be made
to explode the detonator on coming in contact with the rail.
To ascertain when the supply of detonators requires to be renewed in the
case or tube, I have provided a circular index plate, numbered and 'notched,
[or with studs,] which by the action of the lever or handle of capstan or
'quadrant is niade to move one number consecutively with each detonator put
into use, thus at any time showing how many times the danger signal action
has been repeated [see Drawing 3, Fig. 3].
Drawing No. 3.-Depositor of Detonating Signals for Railways, which I term
a Policeman's Detonator Depositor.
Fig. 1, vertical section; Fig. 2, front elevation, with part of the box or case
broken away to exhibit the mechanisin. A, the box or case; A', balance
weight or power; B,'a drum'; C, C, two levers; 'C', connecting rod of the
said levers; D, a fall catch; E, a roller with cams or spiral thread; F, a trap-
ping or assistant lever; G, the stock of the rod attached to the detonator holding
the same; H, the detonator with suitable stem secured to the rod by a ferrule;
I, chain connected with the signalling wire; K, connecting rod from the door
lift to the eccentric; L, a curved guide rod to steady the stock G and the
trapping lever F; M, eccentric for the door-lift movement; N, lever; O, the
door or flap. When all the detonators are within the box A, the balance
weight or power A' will be drawn up to the drum B by the policeman in the
distance pulling in the wire connected with the chain I, which chain it is pre-
ferred to pass one turn round the drum B and out of the box, as shewn by the
red line 1* 1* 1*

page_text: To put a detonator on the rail, the policeman releases the wire, which
is connected to the chain I, when the balance weight power A¹ turns the
drum B one revolution, and draws the lever C up to the front of the box [as
shewn in Fig. 1]. The lever Ċ draws the fall catch D, and the fall catch D
moves the ratchet one-sixth of a revolution on the roller E, "The cams strike
the lever F and lift up the stock G, until the detonator H is placed on the
rail, when the lever F falls back into its original place. For opening the door,
when the drum 'B revolves, the eccentric M makes one revolution, moves the
lever N to and fro, which, opening the door O at the half revolution of the
drum B, and giving sufficient time for the detonator to pass out, and then
upon the complete revolution of said drum B, the door is shut, which prevents
any fragments of the exploding detonator entering the box, and this samo
action takes place on the return stroke. The detonator rod is brought into
the box or case by the action of the connecting rod.
Fig. 3 represents the quadrant guide and lever or handle for working the
apparatus. In this Fig., A represents a wheel notched, and numbered, which
moves one notch forward every time "danger " is put on the signalling appa-
ratus, thereby forming an index to indicate the number of detonators, put on
the line. This movement takes place by a fall D attached to the lever B
catching in the notches of the index, as shewn by the Drawing with regard to
No. 1 on the index A. C is the chain, which is connected by a shackle to the
lever B, and is intended to be connected to the signalling wire, but is not
shewn as so connected in the Drawing."
Fig. 4 represents, by vertical section, arrangements by which I can place
any number of detonating signals on the rail at the same time worked by two
chains. "P, policeman's chain; Q, a lever; R, a fall catch; S, ratchet; T,
policeman's chain; U, a steel spiral spring. The same letters of reference as
are adopted in Figs. 1 and 2 are applied to this Fig. on such parts as are
similar in all the Figs. The policeman pulls the chain P, which moves the
lever Q, the lever Q moves the rod and fall catch R, the fall catch R moves
the ratchet S one-sixth of a revolution every stroke on a roller similar to
(E, Fig. 1.) When the policeman draws the chain T, it brings in the deto-
nator's, which will require a half stroke of the chain P while this is being done
to open the door for this purpose when attached to the drum, as shewn, that
is, if the door action be attached to the drum as in Fig. 1. "The steel spiral
spring U gives the back stroke for the chain P.
Fig. 5 represents a rod attached to a detonator for the purpose of enabling
the same to be put on the rail when not required to be removed therefrom,

page_text: and consists of a long. rod A, which is provided with a bent lever B, which
holds the detonator C till. the lever is pressed upon the rail, when the detonator
is released therefrom and secured to the rail by the same action.
Figs. 6, 7, and 8 exhibit forms and arrangements of the suitable rods and
stems attached to the detonators for .holding the same. In Fig. 6, A repre-
sents a rod with bent forceps at the end, in which is secured Routledge's
patent snow signal B, B. In Fig. 7 there is a suitable stem C binding
around the edge of a circular detonator, and projecting beyond and secured in
a spring ferrule at D,. which forms part of the rod, also marked D. In Fig. 8,
E is a suitable stem, consisting of a flat piece.clipping the two. surfaces of the
detonator, and projecting beyond and secured in a ferrule with a binding screw
at the end of the rod F, and.forming part thereof.
Drawing No. 4.-Depositor of Detonating Signals for Railways, which I
term a Policeman's Detonator Depositor.
Fig. 1, a sectional view; Fig. 2, a longitudinal sectional. view, shewing the
spiral grooved drum G and travelling wedges; Fig. 3, a front elevational view,
with parts broken away to shew the interior arrangements. A, the box or
case; A¹, steel spiral spring or india-rubber in a tube; B, a chain attached
to the spring and to the stock of the detonator rod; C, a slot; D, cheeks or
guides in which the said slot is cut; E, travelling frame connected by rods
from end to end; F, slot or groove for the travelling frame; G, drum with
spiral groove and travelling wedges; H, endless chains for main action;
I, policeman's endless chain; K, detonator; L, the stock of the detonator rod;
M, wedges; N, pullies; O, fall catch; P, a ratchet catch on end of drum.
When all the detonators are within the box the travelling frame E is back
resting in the slot at F.1, and the butt end of. the stock L is resting in the
notch at end of slot at C.
To put a detonator. on the rail, the policeman moves the handle of his
capstan, hereafter described, and makes the pullies N give one revolution and
turn the drum G, by means of the fall. O acting on a single ratchet catch P,
which is fixed on the end of drum G, and the spiral groove on the drum G
moves the wedges M, and the wedges lift the butt end of the stock L out of
the notch at C', and the endless chain H. moves the frame E to the position
shown on the Drawing, and the power, that is, the spiral spring, carries the
detonator K on to the rail, as shewn.. I would here remark, that in practice
I would substitute weights for the spring A', and make the box under the
small pullies of sufficient depth for the action of the weights.

page_text: To bring the detonators within the box, the policeman reverses his handle,
which moves the pullies N.(which are loose on the spindle) one revolution
back (the drum G remaining at rest), and brings the fall over the single
ratchet catch P, moving the endless chain H; which causes the frame E to
bring the detonators into their place again..
"
In said Drawing No. 4, Fig. 4 represents a capstan, in which the chain
around the barrel thereof has the action of an endless chain by being con-
tinued to any convenient distance by wires to the endless chain I, in Figs.
1, 2, 3, so that the policeman in the distance may work the apparatus. The
capstan barrel in action must be regulated in the stroke, so as to give one
revolution to the drum G in the box A, Figs. 1, 2. The index plate, beforo
referred to, would in this case be placed horizontally on the capstan.
In said Drawing No. 4, Figs. 5, 6, represent a policeman's detonator depo
sitor; Fig. 5, a vertical section, and Fig. 6, a partial plan, of one end of
same. A; the box or case; B, a bell-crank lever, worked by an alternate
action of chains C1, C2, which should be attached outside the apparatus to a
pulley and a balance or lever weight, from which a single wire may be con-
nected to the policeman's or signalman's capstan or lever in the ordinary way;
D, a curved rod worked by a sliding action in two curved rods E, E; F, a
forked or slotted lever, there being one to the slide stock of each rod D:
When the fulcrum end of the forked lever F is moved by the cams in the
drum G, the stock of the detonator rod is slided in a curved course till the fork
rests at H, placing the detonator I on the rail. In the back action, the lever F
is brought back by a connecting rod between two corresponding levers B, in
the same manner as C 1, Fig. 2, Drawing No. 3. In this apparatus I have
arranged the cams so as to put out two rods at one stroke, in order to
use the detonator and colored roman candle I 1, or rocket, attached by a
fusee; (in the ordinary process, the rocket part is stuck in the ground by hand,
and the detonating part placed on the rail in the same manner.).
The doors are worked by an extra wire K, acting upon a cranked lever L,
attached to the hinge M. These doors are made to open out in the ordinary.
way of doors, and pass over the top.of the rail; an arrangement whereby the
surface of the rail may be cleared of any ballast, snow, or other obstructions.
To shut the door, there is a weight N attached to it, which brings it back to
its place, which it does immediately the policeman releases the wire. This
arrangement of door may be applied to any of the apparatuses as an additional
appliance for clearing the rails.

page_text: Drawing No. 5. Depositor of Detonating Signals for Railways, which I
term a:Policeman's Depositor.... t
Fig. 1, top view or partial plan; Fig. 2 vertical' section; Fig. 3, 'detail of
door flap. A, box or case; A¹, india-rubber spring; B, à chain-attached to
the spring and the travelling slide catch; C, slide rods to guide the stock of
the detonator stem; D, the stock of the detonator rod; E, pulley; F, annular
travelling frame or wheel, whichi moves upon rollers at bottom of the box or
case; G; boss; H, centre pin; I, policeman's chain; K, wedge; I detonator;
L1, stem of detonator, which is of the form shewn by detached 'Drawing L 1,
and is secured to its detonator by passing the common lead straps through
the two holes in the stem L 1. The detonators sliewn in the box are soldered
to these stems. M; slide catch; N, the door or flap for the opening; O,
spindle for same. When all the detonators are within the box the travelling
slide catch 'M'is back to the boss G, and the stock D is on the base line of the
wedge K::
.
'
To put a detonator on the rail, the policeman lets go the chain I, and the
spring or power A 1 draws the slide catch M forward and carries the detonator
L on to the rail. To bring the detonator within the box; the policeman pulls
his chain I'and draws back the slide catch M, which works to and fro in a
slot on the fixed iron frame P, the upper stud of the stock D being between
the catches of the slide M, the under stud of the stock D being passed back
with a lattéral pressure, sliding against the diagonal line of the wedge K; which
moves the circular frame F the distance of one detonator; when the stock D
gets against the boss G, the back catch being jointed passes over the next
detonator stock D, the back catch being narrow and the front broad. Thus,
the detonator rods and slides being arranged as if to form the spokes of a
horizontal wheel, they are moved round one spoke on.every returning or "all
right" stroke by means of a wedge fixed to the bottom of the circular box,
so as to let the bottom stud of the sliding stock of the detonator rod return on
the diagonal line of the wedge K, the upper stud of stock D being allowed
to free itself sideways from between the catches M and M 1, while sliding back
to boss G. In this apparatus an alternate sliding and rotary motion continues
in the same order till the whole of the detonators have been brought into use.
The nuts on the slide rod-C form stops to the stock of the detonator rods.
In Fig. 3 the detail of the door flap of the apparatus is shewn, which is a
simple flap, turning on a spindle O, for closing the opening or doorway at
P1 P1 D 1

page_text: Fig. 4 represents, by a' plan view, a policeman's detonator depositor, which
is a simplified modification of the foregoing. A, A; A, c, c, (dotted lines), the rim
of box or case, within which are four stocks A' of cast iron, united in one and
bored in the centre, and branching out beyond the crown wheel H, and then
joined to the four radiating detonator rods A 2, carrying four detonators B,
which should have long flat metal stems fitted into the sockets, that form the
ends of the said flat rods A 2. An upright spindle F passes through the centre
piece of A 1; the top of this spindle F is forked, and provided with bearings in
the forked part for an horizontal axle, which carries at each end a fall catch G,
taking into an eight-tooth crown ratchet wheel II. Between the fork of the
upright spindle is a barrel or drum I, on which the policeman's chain is secured,
and by an alternate or to and fro action a rotary movement is given to the
four radiating detonator rods A 2, the eighth part of a circle being described
at each movement, which will bring the detonator B, shewn as on the rail, to
within the line of the front of the box at C, C, there being a long slot
opening in the front of the box to allow the detonator and stem to pass out
and in the apparatus. By the same movement the detonator at D is brought
up to the corresponding line at C, the other detonators following in the same
order. Thus, at the forward stroke a detonator' is put on the rail and at the
backward stroke a detonator is taken off the rail, or vice versa, as it may be
arranged by the manner of attaching the chain to the drum.
Drawing No. 6. Depositor of Detonating Signals for Railways, which I term
a Policeman's Depositor..
.
Fig. 1, a vertical section; Fig. 2, a transverse vertical section. A, box or case;
A, balance weight or power; B. lever, with balance weight attached; C is a
chain from the balance weight lever to the quadrant; D, D, are levers for moving
the door; E, ratchet fall; F, auxiliary catch; G, ratchet wheel; H,-boss; I,
lever, with an arm or hook; K, detonator rod; L, detonator; M, policeman's
chain; N is a disc plate for the guides to be fixed in; O, guide wires to
ench detonator rod; P, spindle; Q, a' bent guide rod, to stay the detonators
from striking against the front of the box when below the horizontal line in
the box. When all the detonators are within the box the lever I is against
the back of it, and the balance 'weight or power A' is raised up.
To put a detonator on the rail, the policeman lets go the chain M, and the
balance weight or power A¹ makes the arm or hook part of the lever I strike
the stock K, and throws the detonator L out upon the rail. To bring tlie
detonator within the box again, the policeman pulls his chain M, which

page_text: draws in the detonator by the lever I, the hook of lever I striking against
the hooks of detonator rods, as shewn, and which turning the ratchet wheel
G and the boss II the distance of one detonator by means of the fall E, which
brings the next detonator into place: To open the fan door, the boss is loose
upon the spindle P, and the door movement.is got by the spindle P-working
forward and backward' by the levers D, D. The two parts of the door N 1
and N 2 close the opening alternately with the action of a detonator being
put out and, taken into the apparatus, the detonators passing out, or in
whilst the open space N 3- is opposite to the opening of the case.which faces
the rail.
Figs. 3 and 4 serves to represent means by which electricity and electro-
magnetism may be applied to actuate machinery for placing in position or
removing therefrom a detonator or detonators from the rails of railways, and
which is effected by the alternate contact and release of a magnet A¹, with
certain moveable pins B, which act a stops for a stud C, placed upon the disc
of the drum H, which is provided with a cam H', see Fig. 3, 1, which at every
release moves, alternately two. wheels L', L³, (see Fig. 3, 1,) each having a
quarter piece morticed out for the striking bearing of the said cam H', which
are connected by chains to pulleys M', M, these pulleys giving the quad-
rangular action to the lever K, hereafter described. These pins are attached
to the ends of a lever I, and are placed with regard to the magnet A¹ as shewn.
By this arrangement the drum H is made to move from pin to pin every alter-
nate movement with putting out or taking in by the quadrangular action of
the lever K, in the same manner as lever T in (Fig. 2, Drawing No. 6,) acts
upon detonator rod in said Fig. 2, Drawing No. 6, the motive power in this
case being the weight N. To increase the number of detonator rods and
detonators, an auxiliary ratchet and catch movement, it is evident, will be
necessary.
Fig. 5 in this Drawing shews another guard's depositor. This consists simply
of a cord B attached to the detonator C so as to withdraw it from the case A,
and allow it to fall in a position directly over the rail; it is released by the
canting of a hook D, or a slip cord through a ring..
Fig. 6, a depositor, suitable for placing at any position on the line of railway
a detonator not requiring to be removed, requiring only a releasing action to
the communication, the stock of the rod being weighted, and returns to its
position in the case through a slot opening, the detonator being self-releasing
by means of an ordinary clipping detonator. This may be effected by a wire
running along the line being broken by a guard, and the outward action will

page_text: take place similar to arrangements in Drawing 4, No. 4, Fig. 5; in this case
the rod being by the cam movement centred at C, and forming a trapping
lever with weighted stock at fulcrum.
Although in several instances I have shewn my apparatus, apparatuses, or.
mechanism as contained in the same box or case with a detonator or detonators,
yet it will be obvious to the practical man that my apparatus, apparatuses, or
mechanism may be simply connected or conjoined with a box or case containing
the detonator or detonators.
Having now particularly described and ascertained the nature of my said
Invention, and in what manner the same is to be performed, I would here
remark, that I do not claim as of my Invention, or the exclusive use of the
several instruments herein described and represented by the accompanying
Drawings, except when the same are employed for the purpose of placing or
removing detonators or fog signals upon or from the rails of railway; and I
hereby declare that what I claim as the Invention intended to be secured by
the said Letters Patent is, the depositing on or the removing from the rails
detonating or fog signals by means of the apparatus and arrangements herein-
before described and referred to.
In witness whereof, I, the said George Baring Locke, have hereunto set
my hand and seal, this Fifth day of May, in the year of our. Lord
One thousand eight hundred and fifty-six.
GEORGE BARING LOCKE. (L.S.)