An Automate Emergency Door or Doors тот and other Large or Public Buildings.
Year: 1888

page_text: An Automate Emergency Door or Doors тот
and other Large or Public Buildings.
We FREDERICK JOHN LANCASTER of No. 95 Stockwell Park Road, Stockwell, an
Assistant in the Office of the Metropolitan Board of Works and EDWIN NIXON of
No. 114 Camberwell New Road, Lambeth, Surveyor, do hereby declare the nature of
this invention to be as follows:-
The automatic unfastening and instantaneous opening outwards of doors to public
and other large Buildings immediately the spring or springs in connection with such
doors be weighted with a minimum weight of forty pounds over and above the weight
of the platformu or floor resting upon such spring or springs.
The arrangement of springs to force the door or doors to open outwards imme-
diately the platform or floor is weighted with the requisite minimum weight whereby
the door or doors will be released.
.
FREDERICK JOHN LANCASTER.
EDWIN NIXON.

page_text: and other Large or Public Buildings.
We FREDERICK JOHN LANCASTER of 95 Stockwell Park Road, Stockwell, an
Assistant in the Office of the Metropolitan Board of Works and EDWIN NIXON of
No. 114 Camberwell New Road, Lambeth, Surveyor, 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 objects to be attained by the construction of these doors are as follows.
To entirely dispense with all locks bolts or fastenings of any kind soever attached to
the doors themselves..
To automatically release and instantaneously push open out towards the Street such
doors by means of springs (marked A. A. on drawing) fixed to the jambs of doors
and rolling or working on the doors themselves and by treading or pressing upon the
platform (approaching such doors from the inside) over the spring (marked B. B.) to
cause such spring to fall or sink and thereby immediately release the doors and allow
them to fly open:
The springs are to be placed at the points marked A. A. and B. B. on the drawing
hereto annexed.
The floor or platform marked C on the said drawing will be divided and hung on
centres. There will be stops under to prevent the platform or floor falling more
than one inch in the centre and upon such platform or floor being weighted
with the minimum weight of forty pounds the spring or springs under the platform
or floor will release the doors marked E. E. on the drawing and permit them to
simultaneously open outwards without any additional manual assistance of any
kind.
The doors will be hung on centres on either side of the passage or way in which
they are fixed and cannot recoil but will remain open during pleasure or desire.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what
we claim is
1. That its action is original and automatic.
2. That it is intended to apply to panic or other exits of Theatres, Music Halls
large or public Buildings and Works, and generally to any Building where speedy
exit is imperative in the case of fire or panic or a rapid exodus of a large concourse
of persons is desired.
Dan L 1
1000