Improvements in Interlocking Railway Signal Levers.
Year: 1886

page_text: Date of Application, 1st Oct., 1886.
Complete Left, 30th June, 1887.
Complete Accepted, 23rd Sept., 1887.
PROVISIONAL SPECIFICATION.
Improvements in Interlocking Railway Signal Levers.
CHARLES BROWN, Engineer, 199. Richmond Road, Dalston, E., CORNELIUS ROGERS,
Engineer, 51, Mulgrave Road, Fulham, W. do hereby declare the nature of this
invention to be as follows:-
A new & improved method of interlocking signal levers by means of specially
devised spring Tappet locking, we claim, that by the use of our invention any com-
bination of interlocking of signal levers can be accomplished, in a simple, inexpensive
& effectual manner irrespective of the position of the said levers one to the other.
The great advantage & novelty is that the use of this Locking provides the much
desired means of ensuring that the levers shall be put back in the same order as
they are pulled over, thus 1. 2. 3. over, must be 1. 2. 3. in putting back. Whereas
the present practice is to put back the levers in reverse rotation to that observed in
pulling over, thus the order is say 1. 2. 3. over, then 3. 2. 1. back.
This invention gives the privilege not only of putting back the levers in the same
rotation as they are pulled over, but can be arranged to suit any rotation desired.
There is practically no limit to the extension of this system, it may be applied
equally well to a Cabin with three levers, or to a Cabin with say three hundred levers.
It is quite immaterial what combination of interlocking may be required this
apparatus can be designed to meet the requirement.
It is also easily applied as an auxiliary to any existing locking.
Tappets notched at intervals, & attached to the signal levers, moving backwards &
forwards with said levers are guided past rows of bars situate at right angles these
bars are provided with projections or cams which enter, & leave the notches in above
Tappets as required, being kept in position, or returned to their normal position by
springs fitted to them. The position & numbers of notches in the Tappets & the
number of bars vary to suit requirements.

page_text: Improvements in Interlocking Railway Signal Levers.
CHARLES BROWN 199 Richmond Road Dalston, E., CORNELIUS ROGERS 51 Mul-
grave
Road Fulham, W., Engineers 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 :-
The spring tappet locking shown for example in drawings herewith is supposed to
be designed to use on a lever releasing the starting signal of a cabin in the rear which
cabin we will call 'A' & it is also connected with the Home signal lever in the cabin
in which it is fixed which we will call 'B'.
The method or routine of user is as follows. When 'B' pulls over the releasing
lever No. 3 plate 1 fig. 1 which in its normal condition stands free the said lever
becomes locked by means of the lock A entering the notch B in the tappet C plate 2
fig. 1 lower locking driven there by the spring D plate 1 fig. 1. The pulling over of
lever No. 3 takes the lock out of lever No. 1 plate 1 fig. 1 by means of the bevel E
provided on tappet C acting on driving piece F fixed on lock G plate 2 fig. 1 lower
locking. The starting signal in cabin A is now released.
Lever No. 3 plate 1 fig. 1 cannot be put back until lever No. 1 the Home Signal
lever has been pulled over when No. 1 lever is pulled over it becomes locked by reason
of the lock H entering the notch I in the. tappet K plate 2 fig. 2 upper locking driven
there by the spring plate 1 fig. 1 the same movement unlocks lever No. 3 by means
of the bevel M provided on tappet N acting on driving piece O which is fixed on
lock A plate 2 fig. 2 lower locking lever No. 3 can now be put back The putting
back of No. 3 lever takes the lock out of No. 1 lever by means of the bevel P provided
on tappet acting on driving piece R which is fixed on lock H plate 2 fig. 3 upper
locking No. 3 lever being put back becomes locked by reason of the lock S entering
the notch T cut in the tappet Q plate 2 fig. 3 upper locking driven there by spring Û
plate 1 fig. 1. No. 1 lever may now be put back & immediately becomes locked by
reason of lock G entering notch W cut in tappet N driven there by spring X plate 1
fig. 1.
The same motion of putting back No. 1 lever takes the lock out of No. 3
lever by reason of the bevel Y provided on tappet K acting on driving piece Z which
is fixed on lock S plate 1 fig. 1.
Having now particularly described & ascertained the nature of our invention & in
what manner the same is to be performed we declare that what we claim is.-
The application of springs & their combination with tappet locking as an automatic
motive power to be used in the interlocking of Railway Signals & apparatus.
Dated this 30th day of June 1887.