Carriage Doors.
Year: 1885

page_text: Carriage Doors.
I, JOHN JOHNSON of 10 Percy Street, Blyth, in the County of Northumberland,
Iron Moulder, do hereby declare the nature of my invention for IMPROVEMENTS IN
LOCKING RAILWAY CARRIAGE & OTHER CARRIAGE DOORS, to be as follows:-
Whereby the carraige door automaticaly locks, & unlocks itself by the motion,
or stopping of the carriage.
My improvement consists of a fan-blade or any surface-so placed under the
carriage, that the motion of the said carriage causes the air to so act upon the
aforesaid fan-blade-or surface-which gives the automatic action to levera―
cranks, &c, so acting upon a revolving plate, or disc-forming the locking-bolt,
which fastens the carriage door, & also automaticaly unlocks the same, when the
motion of the carriage ceases.

page_text: wy
Carriage Doors.
I JOHN JOHNSON of 10 Percy Street, Blyth, Northumberland, Iron Moulder,
do hereby declare the nature of my invention for IMPROVEMENTS IN LOCKING
RAILWAY CARRIAGE, OR OTHER CARRIAGE DOORS, and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:―
My Improvement consists of a fan,-blade,-
-or any surface, so placed under the
said carriage, that the motion of the said carriage causes the air to so act upon
the aforesaid fan,-blade, or surface, which gives the automatic action to the
lever, levers, cranks, &c. so acting upon a revolveing plate, or disc, forming
the locking bolt, which fastens the carriage door & also automaticaly unlocks the
Bame, when the motion of the carriage ceases.
Furthermore my invention consists of a flat plate, or superficial area of any
form, or shape, (herein named a fan, blade, or disc) which aforesaid plate is
attached to a bar or rod, forming a lever with a suitable notch, hole or eye, so
formed at the top extreeme of the lever, the fan is placed at the lower extreeme end
of the lever, the top end of the lever is so placed that it works the disc or sneck,
(herein named the locking bolt.) The aforesaid lever with fan attached is made to
swing like a pendulem on a pin or axle, so placed at a suitable distance between
the extreme ends, so that when the carriage moves, the air presses on the flat plate
or fan, causing the lever to which it is attached to vibrate, or swing, & thereby
moves the disc, or locking bolt at the top end, which locks the door, while the
motion of the carriage continues, which places the fan & lever at an angle from
the perpendicular line.
And when the motion of the carriage ceases, the lever & fan hang down
motionless in the said perpendicular line, if under the control of the guard of the
train, cords are attached to each, running thro loops to the van, tightening the
cord will lock the door, & when the cord is slack, the lever hangs down, & frees
the door.
Fig. I, show section of carriage with lever & fan, (a) lever (b) fan, (c) locked
door, (E) unlocked door, (d) carriage foot boards this works without crank, or disc,
(P) attachement cords.
Fig. II, shows lock with lever, fan, crank, & locking bolt, wheel or sneck herein
called a disc, (L) lever, (H) crank (K) disc, or locking wheel (b) fan.
Fig. III shows lock with fan, lever, & disc, in which the crank is dispensed
with, (b) fan, (L) lever, (K) disc, (M) shows a slotted hole in which a fulcrum pin
is placed to give freedom to L.
Fig. IV described in Fig. I, except (f) line of edge & bottom of door.
Figs. II, III, (N) form of discs behind door jamb, dotted lines show action of
lever & fan, &c.

page_text: Having now particularly described & ascertained the nature of my sail
Invention, & in what manner the same is to be performed, I declare that what
I claim is
1st The fan blade or surface on which the air presses, when the carriage is in
motion which places the lever on which it hangs at an angle, & thereby locks
the door.
The foregoing clause describes the automatic action.
2nd I further claim that, when the guard of the train has the control of the
locks, that the wieghted fan-blade-or surface, which gives the tripping or tilting
action to the lever or locking bolt, is part of my invention.
3rd. I also claim that if any surface whatever is so placed any where on any
carriage in whatsoever position, on which the atmosphere presses & thereby cause
motion to levers, cranks,-wheels, or any thing for any purpose whatever, by any
other person or persons, is an infringement of my Patent Rights, except such as are
empowered by me.