Improvements in Draught-preventers applicable to Doors.
Year: 1890

page_text: Date of Application, 20th Feb., 1890
Complete Specification Left, 20th Nov., 1890-Accepted, 20th Dec., 1890
PROVISIONAL SPECIFICATION.
Improvements in Draught-preventers applicable to Doors.
I, EMANUEL INGHAM, of No. 168 Peel Park Terrace, Burnley Road, Accrington
in the County of Lancaster, Cabinet Maker, do hereby declare the nature of this
invention to be as follows:―
This invention relates to improvements in appliances for preventing draughts of
air passing under doors, and consists of a strip or bar of wood, which, when the
door is closed is automatically lowered until touching and pressing on the floor
below the door so that any space or passage way between the bottom of the
door, and the floor, or ground is closed, and currents and dranghts of air are
excluded.
According to this my said invention on the outside of the door, and near the
bottom, 1 fix a bar, or strip of wood which extends across the door, the lower part
of the bar, or strip is recessed and receives a second bar, or strip of wood which is
carried by two, or more links, attached by pins, or studs to the loose strip of wood,
the other ends of such links are jointed to one end of sector levers carried on pins
passing through them, and into the fixed bar, or strip of wood. The said sector levers
have cam or inclined surfaces formed in them through which are passed pins fixed
and carried in a pusher rod or bar of wood which is free to slide in a groove, or guide
in the fixed bar or strip of wood first mentioned. One end of this pusher rod extends
or protrudes beyond the end of the fixed strip and coming in contact with the door
jamb or cheek, when the door is closed slides in its guide, the fixed pins operating on
one face of the cam, or inclined surfaces formed in the sector levers, thereby turning
the latter on their fulcrum straightening the joint and links, thus lowering the loose
strip, or bar of wood until the latter comes in contact with the floor, beneath the
bottom of the door and prevents and excludes draughts.
As soon as the door is partly opened a blade, or coach spring one end of which is
held in the fixed strip of wood, the other end being attached to the loose strip, quickly
raises the latter clear of and above the ground so that the door can be opened without
obstruction from the "preventer" dragging.
Guides, or slots, and pins are provided which cause the loose strip or bar of wood
to be raised, or lowered in a true vertical direction.
By the use of appliances as above described the draught preventer is made
reversible, that is, it can be actuated from either end, the pusher rod being simply
pushed so far from one end that the sector levers and links are turned over on their
fulcrum, and the other end of the pusher rod protrudes from the opposite end of the
fixed strip of wood.
Dated the 10th las of Babe 1800
WALTER BRIERLEY,
Central Chambers, Halifax, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Draught-preventers applicable to Doors.
I, EMANUEL INGHAM, of No. 168 Peel Park Terrace, Burnley Road, Accrington
in the County of Lancaster Cabinet Maker, 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 improvements in appliances for preventing draughts of air
passing under doors and consists of a strip or bar of wood, which, when the door is
closed is automatically lowered until touching and pressing on the floor below the door
17

page_text: So that any space or passage way between the bottom of the door, and the floor, or
ground is closed, and currents and draughts of air are excluded.
According to this my said invention on the outside of the door, and near the bottom,
I fix a bar or strip of wood which extends across the door, the lower part of the bar or
strip is recessed and receives a second bar, or strip of wood which is carried by two,
or more links attached by pins, or studs to the loose strip of wood, the other ends of
such links are jointed to one end of sector levers carried on pins passing through
them, and into the fixed bar, or strip of wood. The said sector levers have cam or
inclined surfaces formed in them through which are passed pins fixed and carried in
a pusher rod or bar of wood which is free to slide in a groove or guide in the fixed
bar or strip of wood first mentioned. One end of this pusher rod extends or protrudes
beyond the end of the fixed strip and coming in contact with the door jamb or cheek,
when the door is closed slides in its guide, the fixed pins operating on one face of the
cam, or inclined surfaces formed in the sector levers, thereby turning the latter on
their fulcrum straightening the joint and links, thus lowering the loose strip, or bar of
wood until the latter comes in contact with the floor, beneath the bottom of the door
and prevents and excludes draughts.
As soon as the door is partly opened a blade, or coach spring one end of which is
held in the fixed strip of wood, the other end being attached to the loose strip, quickly
raises the latter clear of and above the ground, so that the door can be opened without
obstruction from the preventers dragging.
Guides or slots and pins are provided which cause the loose strip or bar of wood to
be raised, or lowered in a true vertical direction.
By the use of appliances as above described the draught preventer is made
reversible, that is, it can be actuated from either end, the pusher rod being simply
pushed so far from one end that the sector levers and links are turned over on their
fulcrum, and the other end of the pusher rod protrudes from the opposite end of the
fixed strip of wood.
Such being the nature and object of my said invention the following is a
complete description of same reference being made to the accompanying drawings
in which:-
Fig. 1 is a back view in elevation of my improved draught preventer detached
from the door and shewing the positions assumed by the several parts when the door
is open.
Fig. 2 is a similar view to Fig. 1 but shewing the positions assumed by the several
parts when the door is closed.
Fig. 3 is an end view of Fig. 1 shewing part of the door to which the draught
preventer is attached.
Fig. 4 is an end view of Fig. 2 also shewing part of the door.
Fig. 5 is an end view of a modification of my improved appliances for purpose
aforesaid.
According to this my said invention on the outside of the door 1 and near the
bottom of same, I fix by screws, or otherwise, a bar or strip of wood or other
material 2 which extends across the width of the door 1. The lower part of the strip
or bar of wood is recessed as at 3 (see Figs. 3 and 4) and receives a second bar or
strip of wood 4 the latter being carried by two or more links 5. 5 attached by pins
or studs 6. 6 to the loose strip or bar 4, the other ends of such links 5.5 are jointed
as at 7.7 to the ends of sector levers 8. 8 carried on pins 9. 9. passing through them
and into the fixed bar or rib 10 formed in the strip or bar 2. The sector levers 8. 8
have cam or inclined surfaces 11. 11 formed in them, and through which are passed
the pins or studs 12. 12 which may have collars or runners on them to lessen the
frictional contact between the pins or studs and the surfaces 11, the pins or
studs 12. 12 are fixed and carried in a pusher rod or bar 13 of wood or other
material which is free to slide in a groove or guide 14 formed in the fixed bar or
strip of wood 2.
One end of the pusher rod 13 extends or protrudes beyond the end of the fixed
strip 2 (see Fig. 1) and coming in contact with the door jamb, or cheek when the

page_text: door is closed slides in the guide or groove 14 the fixed pins 12. 12 operating on one
face or inclined surface 11. 11 formed in the sector levers 8. 8 thereby turning the
latter on their fulcrum studs or pins 9. 9 straightening the joints 7. 7 and links 5.5
and thus lowering the loose bar or strip of wood 4 and, the several parts assume the
positions shewn in Figs. 2 and 4 the bar or strip of wood 4 coming in close contact
with the floor beneath the bottom of the door 1 and thereby prevents and excludes
draughts of air.
As soon as the door is partly opened a blade or coach spring 15 one end 16 of which
is held in the fixed strip, or rib of wood 10 the other end being attached by a hooked
finger or bracket 17 to the loose strip of wood 4 the latter is quickly raised from
the ground, so that the door can be opened without obstruction from the preventer or
strip 4 dragging.
A guide or guides consisting of a strip of metal 18 one end being fixed to the
loose strip 4 and its other end working through a slotted bracket 19 on the rib 10, or
vice versa causes the loose strip 4 of wood to be raised or lowered in a true vertical
position.
The improved draught and dust excluder as above described is reversible, that is,
it can without alteration be actuated from either hand or by a door opening to the
right or left, the pusher rod 13 being simply pushed so far from one end that the
sector levers 8. 8 and links 5. 5 are turned over on their centres, and the rod 13
protrudes from the opposite end and the several parts assume a position the reverse
of that shewn in Fig. 1.
In some cases I find it advantageous that 5. 5 should be dispensed with, and
anti-friction runners or bowls 20 mounted at the points 7 (see Fig. 5) the said
runners 20 working along the upper edge of the second strip or bar of wood 4
which may have a metal plate fixed thereon on which the runners or bowls 20 will
act, the action being similar to the before described appliance, the sector levers 8
and runners 20 depressing the strip or bar of wood 4 and the spring 15 raising
same when the pressure from the runners 20 is removed.
Having now particularly described and ascertained the nature and object of
my said invention and in what manner the same is to be employed I declare
that what I claim is :-
(1). The fixed strip of wood 2, bar or strip 4 links 5. 5 sector levers 8. 8 having
double cam or inclined surfaces 11. 11 pins or studs 12. 12 pusher rod or bar 13
working in the guide or groove 14, the spring 15 hooked finger or bracket 17
guide or guides 18 and bracket or brackets 19 all in combination and as and for the
purpose herein fully described and as illustrated by the annexed drawings.
(2). The fixed strip of wood 2, bar or strip 4 sector levers 8. 8 having double
cam or inclined surfaces 11. 11 and anti-friction runner or bowls 20 pins or
studs 12. 12 pusher rod or bar 13 spring 15, hooked finger or bracket 16 guide
or guides 18 and slotted bracket or brackets 19 all in combination and as and for
the purpose herein fully described and as illustrated by Fig. 5 of the annexed
drawings.
Dated this 18th day of November 1890.