Year: 1887

page_text: Date of Application, 26th Feb., 1887
Complete Left, 20th Oct., 1887
Complete Accepted, 29th Nov., 1887
[Communicated from abroad by HIRAM KLEIN WHITNER, of 35, Gramercy Park, in the
City and State of New York, United States of America, Physician.]
1, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, do hereby declare the nature
of this invention to be as follows:-
This invention relates to an improved mechanical movement, which is especially
intended for use where a certain part has to be moved from one of two positions into
the other of such positions and locked when adjusted to either position.
The said invention consists in a mechanical movement having in combination a
rod or rods requiring to be adjusted into different positions, two pairs of toggle arms
serving to actuate the same and provided with opening and closing jaws, and a bar
serving to impart motion to the pairs of toggle arms, in such a manner that one pair
of toggle arms will be deflected out of alignment, and the other pair into alignment
whenever the operating bar is reciprocated.
Preferably the pairs of toggle arms are arranged one pair on each side of the rod
or rods which they are to shift and lock in position; although both pairs of said
toggle arms may be arranged upon the same side of the said rod or rods.
One of the toggle arms of each pair is connected to the rod which is to be actuated
thereby and the other toggle arin of such pair is secured to a stationary support
located adjacent to the said rod. The operating bar has a movement in the direction
in which the pairs of toggle arms are moved in deflecting it; and as the toggle arms
in being deflected move transversely to the length of the rod or rods which they are
to shift and lock, the operating bar has a movement in a direction transverse to the
length of said rod or rods.

page_text: The movement of the two pairs of toggle arms is differential; and for this reason the
pairs of toggle arms are provided with jaws at the ends where they are connected in
pairs this being necessary in order that the said toggle arms may sometimes be
engaged with, and at other times disengaged from, the actuating bar. The actuating.
bar is provided with pins which these jaws embrace when they close, and release when
they open.
This improvement is advantageous for operating and locking a railway switch, and
when used for this purpose may also be combined with mechanism for operating a
"detector bar" which is a device employed to indicate or make known that a train
is in a particular position with relation to the switch.
The improvement also consists in the combination, broadly considered, with a single
pair of toggle arms having jaws at the meeting ends of the arms, of a pin at times
engaging with the jaws, and at other times being disengaged therefrom. This pin
is moved in a direction transverse to the length of the toggle arms when they are in
alignment, and it may be employed either for operating the arms to deflect them or
adjust them into line, or it may merely co-act with them at times to prevent them
from being deflected by extraneous or other forces.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.,
Agents for the Applicant.

page_text: and Locking Railway Switches.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, 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 an improved mechanical movement which is especially
intended for use where a certain part has to be moved from one of two positions into
the other of such positions and locked when adjusted to either position.
The said invention consists in a mechanical movement having in combination a rod
or rods requiring to be adjusted into different positions, two pairs of toggle arms
serving to actuate the same and provided with opening and closing jaws, and a bar
serving to impart motion to the pairs of toggle arms in such manner that one pair
of toggle arms will be deflected out of alignment and the other pair into alignment
whenever the operating bar is reciprocated. Preferably the pairs of toggle arms
will be arranged one pair on each side of the rod or rods which they are to shift and
lock in position; although both pairs of said toggle-arms may be arranged upon the
same side of the said rod or rods. One of the toggle-arms of each pair will be con-
nected to the rod which is to be actuated thereby and the other toggle arm of such
pair will be secured to a stationary support located adjacent to said rod. The operating
bar will have a movement in the direction in which the pairs of toggle-arms are moved
in deflecting it, and as the toggle-arms in being deflected will move transversely to
the length of the rod or rods which they are to shift and lock, the operating bar will
have a movement in a direction transverse to the length of said rod or rods.
The movement of the two pairs of toggle arms will be differential; and for this
reason the pairs of toggle-arms are provided with jaws at the ends where they are
connected in pairs; this being necessary in order that the actuating bar may some-
times be engaged with, and at other times disengaged from the toggle levers. The
actuating bar is provided with pins which these jaws embrace when they close, and
release when they open.
This improvement, is advantageous for operating and locking a railway switch, and
when used for this purpose may also be combined with mechanism for operating a
"detector bar" which is a device employed to indicate or make known that a train is
in a particular position with relation to the switch.
The improvement also consists in the combination broadly considered, with a single
pair of toggle arms having jaws at the meeting ends of the arms, of a pin at times
engaging with the jaws, and at other times being disengaged therefrom. This pin
will be moved in a direction transveree to the length of the toggle-arms when they
are in alignment, and it may be employed either for operating the arms to deflect
them or adjust them into line, or it may merely co-act with them at times to prevent
them from being deflected by extraneous or other forces.
In the accompanying drawings
Figure 1. is a plan or top view of a mechanical movement embodying my improve-
ment and part of a rail-way rail, a switch, and appurtenances with which the same
may be combined, the mechanical movement being represented in one of its several

page_text: conditions. Figure 2, is a similar view showing the mechanical movement in
another condition. Figure 3, is a like view showing the mechanical movement in still
another condition. Figure 4, is a transverse section of the mechanical movement,
taken at the plane of the dotted line, Figure 2. Figure 5, is a plan or top view
of one of four arms comprised in the mechanical movement, this arm having a modified
construction as compared with the arms shown in the other figures. Figure 6, is a
plan view of a modification of this mechanical movement. Figure 7, is a similar
view of this last modification but showing its parts in a different position. Figure 8,
is a similar view of another modification of this mechanical movement. Figure 9, is
another and similar view of the last modification with its parts in a different position.
Figures 10 and 11 are plan views of modifications wherein two rods are operated by
the toggle-arms. Figure 11 is a plan of another modification wherein two rods are
operated by the toggle-arms.
Similar letters of reference designate corresponding parts in all the figures.
In Figures 1 to 9, inclusive, A designates a rod which is to be shifted longitudinally
into different positions and locked in its extreme positions. This rod may be used for
shifting and locking a railway switch, as shown in Figures 1, 2, 3, and 4, or for any
other purpose. As shown in the figures just enumerated, it is fitted in a guide, a,
consisting of a staple or strap. At one end it is connected to the railway-switch.
The rod may of course be guided in various ways to subserve the same purpose. The
rod A, in the diagrammatic views is intended to be suitably guided.
B1 B2 B3 B designate four arms, which are combined with the rod A, and with a
traverse-bar, C, for imparting longitudinal movements to the rod A, and locking it. I
will first describe the construction and operation of these parts as they are illustrated
in Figures 1, 2, 3, and 4. The arms B¹ B³ are pivotally connected at their remote
ends to supports S, which are arranged adjacent to the rod A. The remote ends of
the arms B B are pivotally connected to the rod A. The arms B₁ B2 are pivotally
connected together, and the arms B3 B are pivotally connected together. In the
present example of my improvement the arms B1 B2 are arranged on one side and the
arms B B on the other side of the rod A.
In the present example of my improvement the location of the points at which the
remote ends of the armis B¹ B³ are pivotally connected to the supports S bears such
relation to the points at which the arms B B+ are connected to the rod A, that when
the pair of arms B1 B2, and the pair of arms B3 B4 are equally deflected from the
rod A, as shown in Figure 2, the points at which the arms B2 B₁ are connected to the
rod A will be opposite the points at which the remote ends of the arms B¹ B³ are
connected to the supports S. This relation is desirable, but not by any means essential
to my improvement.
The traverse-bar C co-acts with the pairs of arms B1 B2 B3 B, but is not
connected thereto. The pairs of arms have jaws at their connected ends, and these
jaws close at times over or around pins c¹ c², with which the traverse-bar is provided,
and open at other times to release such pins. The jaws of the arms B B are
marked 162, and the jaws of the arms B³ B are marked 63 64. The jaws bb
coact with the pin c¹ of the traverse-bar, and the jaws 3b, coact with the pin c of
such bar. It will be seen that when the traverse-bar C is in a position half way
between either of its extreme positions, as shown in Figure 2, the pins c¹ c² are in
contact with the arms B1 B2 B33 B.. When the bar C is moved out of this position,
which is represented by Figure 2, one of the pins c¹² will be removed from the
arms with which it contracted, and the other of said pins will be embraced by the
jaws of the arms with which it co-acts.
1 will explain the operation of the traverse-bar and arms more particularly with
reference to the parts shown as combined with them in this example of my
improvement.
D designates one of a pair of rails in a railway.
D₁ designates one of a pair of switch-rails, which, as here shown, are connected to
and shifted by the rod A. The traverse-bar (may be operated by any convenient
means extending from it to a place where a switchman is stationed. A convenient

page_text: mechanism for operating it will consist of rods or links and bell-crank levers, such
as are ordinarily used for imparting motion to Switch-operating mechanism of
common forms.
When the switch-rails D' are to be adjusted into proximity with the rails D, the
traverse-bar C, is shifted into the position in which it is represented by Fig. 1. When
this is done the arms B3 B will have been swung into line with each other, and as
their meeting ends are connected close to that edge of the arms which is adjacent to
the rod A, any force tending to move the switch-rails D¹ in direction of arrow w, will
he resisted by the arms B3 B. This will be due to the fact that such force would
tend to swing the arms toward the rod A, and the pin c², fitting between the jaws of
these arms, will preclude and stop or prevent such action. The movement of the
traverse-bar into this position (represented by Fig. 1) will also have caused the
arms B B to have been swung outward away from the rod A as far as possible.
In swinging outwardly their jaws will have been opened, so as to disengage
them from the pin c¹, and the pin c will have been moved far beyond said jaws.
I may here call attention to the fact that the traverse-bar C will preferably be
made of two portions, one arranged above the other, and connected by the pins c¹²
When thus made, one of its portions will preferably extend below the arms B³, B²;
B3, B4, and rod A, and the other portion above these parts.
The traverse-bar C may be guided in its movements by any suitable contrivance
upon the ground or other support, such as bearings or radius-bars; but it will be
found sufficient to provide guides upon the arms B1, B2, B3, B4, for that purpose.
I have shown such guides, consisting of pins d¹ d² d³ d², arranged on said arms.
Although the arms B3 B4 will securely lock the rod A in position, yet, if preferable,
one of said arms may be provided with a pin, e, which will enter a transverse hole or
groove in the rod A whenever said arms B3 B4 are swung inward close to the rod A.
In lieu of or in addition to locking the rod A, by the means already described,
I may cause a detector-bar, E, which I have shown, to lock the rod. This detector-
bar is shown as supported close to one of the rails D by radius-arms, and combined
with a lever, E', that is fulcrumed on a support E³, between the ends, and connected
near one end to the traverse-bar C, by means of a pin affixed to the latter and passing
through a longitudinal slot in said lever. When the traverse-bar is shifted into its
extreme positions, the lever E' will be vibrated and thus caused to move the detector-
bar in the direction of the length of the latter. Owing to the manner in which the
detector-bar is supported it will necessarily be elevated in order that it may be shifted
from one to another of its extreme positions. It cannot, therefore, be shifted from
one to the other of these positions while the wheel of a car is over it. The inability
of the switchman to shift the switch at such time indicates the presence of a train
there. In moving to either of its extreme positions, the detector-bar descends.
Therefore, by providing transverse grooves g¹ g at such parts of the rod A as will be
opposite the detector-bar when the latter is in its extreme positions, the detector-bar
may be made to engage with the rod A to lock it, and hence to secure the switch
rails.
When the traverse-bar is moved into the position shown in Figure 3, the arms B¹ B²
will be brought into line close to the rod A, and the arins B³ B* will be swung away
as far as possible from the rod A. In short, the operation of the two pairs of arms
will be exactly the reverse in every respect from their operation when in the positions
illustrated in Figure 1. The arms B B may be provided with a pin, e¹, which will
operate like the pin e, but to secure the rod A in another position.
It will be seen that the traverse-bar *moves a greater distance transversely of
the rod A than either pair of arins. Owing to this there will be a differential
movement of the pairs of arms, and consequently a differential movement of the
rod A, when adjusted from one of its extreme positions to the other. Indeed, the
arms will shift the rod A through-out its range of motion, and then lock it in their
final movements when they swing into line. The detector-bar will also have a
differential movement.

page_text: The pairs of arms constitute in effect pairs of toggles. The traverse-bar C operates
upon these pairs of toggles at a point of such advantage that power is economized in
the operation of the roil A.
In Figure 5, I have shown that, if desirable, I may impart to the jaws of the
I have
arms B1 B2 B3 B4, a swinging movement relatively to the arms themselves.
only illustrated this feature in connection with one of the arms. Its jaw is pivotally
connected to it by a pin, 66, and is pivotally connected to one end of a rod, 68, which
at the other end is pivotally connected to the ground, or some other support at a
point distant from the point where the arm is pivoted to its support. This will be
especially desirable when the arms B1 B2 B3 B have little movement, or when the
jaws are inward of the points at which the arms are connected together, as shown in
Figure 11.
In Figures 6 and 7, I have shown two pairs of arms, B1 B2 B3 B4, arranged on the
same side of the rod A, instead of one pair being arranged at each side thereof, as in
the example of my improvement first described. In this example of my improvement
(illustrated by Figs. 6 and 7) the remote ends of the arms B B³ are pivotally
connected to supports S, and their adjacent ends are pivotally connected to arms B B*,
which are at the other ends pivotally connected to the rod A. Instead of a traverse-
bar which operates with a reciprocating motion, as in the example of my improvement
first described, 1 here employ a rocking bar or lever, C, fulcrumied between the ends,
and provided near the ends with pins c c². The pairs of arms B1 B2 B3 B are
provided at their meeting ends with jaws, as in the outer example of my improvement.
When the bar C, is rocked, so as to straighten out one pair of arms into line and
proximity with the rod A, the jaws of this straightened pair of arms will embrace the
pin of the bar C with which they co-act. When one pair of arms is thus straightened
out, the movement of the rod A, and of the bar C will cause the other pair of arms to
be swung as far away from the rod as possible. Each arm of the bar C in rocking
away from the rod A moves farther than the pair of arms with which such arm co-acts.
Its pin, therefore, in this movement becomes disengaged from the arms, the jaws of
the arms being opened to permit of this. The lever may be rocked by means of a rod
extending to it. The rod A may be employed to operate a switch-rail or any other
article required with like movement or a reciprocating movement.
In Figures 8 and 9, I have shown still another modification of my improvement,
involving the arrangement of two pairs of arins, B1 B2 B3 B4, upon the saine side of
the rod Å. The arms B1 B³ are pivotally connected at their remote ends to supports S,
and at their adjacent ends are pivotally connected to arms B2 B₁, that are connected
pivotally with a crank-arm, C, extending from a rocking bar or lever, and the pairs of
arms operate in the same way as in the example of my improvement which is
illustrated by Figures 6 and 7. The crank-arm is connected with the rod A. The
lever may be operated by any suitable means-as, for instance, a rod connected to
one end.
In Figure 10 two rods, A A*, are employed. They are supported and guided so
as to be capable of independent movement. The arms B' B² co-act with the rod A,
and the arms B³.B with the rod A*. The traverse-bar Coperates in conjunction
with the toggle-arms, as in the first-described example of my improvement. Obviously,
in the present example of my improvement each rod will at one period of its action
move while the other is motionless.
In the example of my improvement shown in Figure 11, two rods, A A*, are used.
They are guided to move lengthwise. They have pairs of toggle-arms B₁ B2 and B³ B
connected with them. The jaws of these arms are on the adjacent instead of the
remote or distant sides of the pairs of arms. The traverse-bar needs only one pin, c¹.
It will be seen that in this example of my improvement the pin of the traverse bar is
engaged with the jaws of the toggle-arms when the latter are wholly flexed or swung
outward and disengaged therefrom when they are straightened into line, because the
jaws are opened by the adjustment of the arms into the latter position and closed by
the adjustment of the arms into the reverse or first named position.

page_text: Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to me
by my foreign correspondent I declare that what I claim is :-
1. A mechanical movement having in combination a rod or rods, toggle-arms
provided with opening and closing jaws, a bar serving to impart motion to the toggle-
arms, and provided with a pin for engaging with the jaws of the toggle-arms,
substantially as specified.
2. A mechanical movement having in combination a rod or rods, two pairs of
toggle-arms acting in conjunction with the same, and a bar for imparting motion to
the pairs of toggle-arms, the said toggle-arms being provided with jaws which open
and close to engage with a pin or pins on the operating-bar, and one of each pair of
arms being connected to the rod or one of the rods which said arms are to operate
and the other to a support independent of the rod or rods, substantially as specified.
3. A mechanical movement, having in combination a rod or rods, two pairs of
toggle-arms for actuating the same, arranged one pair on each side thereof, and a
traverse-bar arranged transversely to the rod or rods and to the pairs of arms, said
toggle-arms being provided with jaws, which open and close to engage with a pin or
pins on the traverse-bar, and one of each pair of arms being connected to the said
rod or one of the rods and the other to a support independently of the rod or rods,
substantially as specified.
4. The combination of main rails and switch-rails forming part of a railway, a
rod for operating the switch-rails, pairs of toggle-arms serving to operate the rod and
connected to the rod and to supports independently thereof and having jaws at their
connected ends, a rod provided with pins, which may engage with the jaws of the arms
so as to impart motion to the arms, a detector-bar adjacent to one of the main rails,
and a lever connected to the detector-bar and to the bar which imparts motion to the
toggle-arms, substantially as specified.
5. The combination of a rod, a pair of toggle-arms connected together and
connected one to the rod and the other to an independent support, a bar serving
to impart motion to the toggle-arms, and a pin carried by the toggle-arms and serving
to engage with the said rod and lock it, substantially as specified.
6. The combination of a rod, a pair of toggle-arms connected together and connected
one to the rod and the other to an independent support, a bar for imparting motion to
the arms, another bar for engaging with a transverse groove in the rod so as to lock
the same, and a lever connected at one end to the said locking-bar and at the other
end to the bar that imparts motion to the toggle-arms, substantially as specified.
7. The combination, with a pair of toggle-arms, of jaws arranged at the meeting
ends at one side of the point at which the arms connect, and a pin for entering the
jaws and preventing them. from deflecting or swinging in that direction in which
they would otherwise swing on the application of force in the direction of their length,
substantially as specified.
8. The combination, with a toggle-arm, of a jaw pivotally connected to the arm
and a rod for swinging said jaw relatively to the arm, substantially as specified.
9. The combination of a pair of toggle-arms having jaws which work past each
other with a shearing action in closing and a pin for engaging with said jaws,
substantially as specified.
Dated this 20th of On1007