IMPROVEMENTS IN DRAUGHT PREVENTERS FOR DOORS AND WINDOWS
Year: 1888

page_text: Date of Application, 20th Jan., 1888
Complete Specification Left, 20th Oct., 1888
Complete Specification Accepted, 30th Nov., 1888
I, HIRAM WADDINGTON Joiner and Builder Grant Street Saw Mills Accrington do
hereby declare the nature of my invention for IMPROVEMENTS IN DRAUGHT PREVENTERS
FOR DOORS AND WINDOWS to be as follows:-
My Improvements consist in having two pieces of timber of suitable size and shape.
The top piece of timber, which is secured to the door or window to be rebated on the
side next the door or window to recieve the bottom or moveable piece of timber which
is made to project beyond the top or fixed piece of timber on the bottom edge to
allow of its being fitted to the floor or frame where the draught preventer is
fixed.
On either the top or bottom piece of timber and on the rebated side I fix two or
more wood, earthenware or metal anti-friction pullys or fixed inclined (two ways)
pieces of suitable size which work in suitable V shaped or inclined planes formed in
the bottom or top piece of timber.
I make the end of the bottom or moveable piece of timber to project beyond the
end of the top or fixed piece of timber on the hanging side of the door or window to
which the draught preventer is fixed as much as is required to give it the necessary
longitudinal motion so that when it comes in contact with the door or window casing
or jamb (by closing the door or window) it will be pushed forward and in so doing
the above-mentioned V shaped or inclined planes will be brought in contact with the
above mentioned anti-friction pullys or fixed inclined (two ways) pieces attached to
the top or bottom piece of timber which will at the same time give the bottom or
moveable piece of timber the necessary. downward motion and will cause it to fit close
to the door or frame.
To lift the bottom or moveable piece of timber up when the door or window is
opened I fix a spring of steel or other suitable metal of suitable size and length-
secured or partially secured at each end to the bottom or top piece of timber and bent
over an anti-friction grooved pully or stud secured to the top or bottom piece of
timber which pulls the bottom or moveable piece of timber up, and sideways at the
same time owing to the action of the beforementioned anti-friction pullys or fixéd
inclined (two ways) pieces and V shaped or inclined planes.
Dated this Seventeenth day of January 1888
HIRAM WADDINGTON,
Joiner and Builder,
Grant Street Saw Mills,
Accrington.

page_text: COMPLETE SPECIFICATION.
Improvements in Draught Preventers for Doors and Windows.
I HIRAM WADDINGTON of Grant Street, Accrington, Joiner and Builder do
hereby declare the nature of my said 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 refers to that class of draught preventer applicable to doors or
windows in which a wooden moulding of suitable depth and rebated on the inner face
is fixed at the bottom of the door or window and in the rebate of which is mounted a
wooden bar capable of descending in a parallel direction into touching contact with
the door step or window frame as the door or window turns upon its hinges owing to
the projecting end of the wooden bar coming in contact with the stationery side
frame or casing of the door or window.
The improvements relate to the novel means employed for giving the necessary
parallel descending motion to such bar without employing any joints or connecting
links as heretofore and whereby I am enabled to readily remove the bar and reverse
it in position in its rebate so as to suit either right or left hand doors or
windows.
My improvements also relate to a novel arrangement of bow spring in combi-
nation with a grooved pulley for lifting the bar in the rebate immediately its
extremity is released.
On the accompanying drawing I illustrate in Fig. 1 a rear view and in Fig. 2 an
end view of my improved draught preventer complete. Figs. 3 and 4 are similar
views shewing the reversible bar in two positions as hereinafter described both views
represent the bar lowered into contact with the door step or window frame (indicated
by the sectional lines in Figs. 1, 3 and 4). Fig. 5 is an end view of Figs. 3 and 4.
Figs. 6 and 7 represent the rebated moulding and reversible bar separated from each
other and Fig. 8 is a plan view of Fig. 7.
In all the views a is the rebated moulding which is affixed to the bottom of the
door or window in the ordinary manner and contains in its rebate 6 the improved
reversible bar c.
This bar e when the door or window is open occupies the highest position in its
rebate and above the door step or window frame, as illustrated in Fig. 1 and also
projects slightly beyond the rebated moulding say at the hinged or right hand side as
illustrated.
I prefer to employ a metal flap or tongue piece d secured by a screw or hinged to
the top edge of the bar cand the point of which by projecting slightly beyond the
extremity of the bar is designed to come in contact with the door or window
frame and so to take the thrust off the bar and thus to reduce abrasion and
friction.
•
To the top edge of the bar and at suitable distances apart I secure a pair of angular
projections or pieces of metal e which project into correspondingly shaped apertures f

page_text: formed in the upper part of the rebate. These apertures constitute a pair of inclined
planes down the sides of which the angular projections e slide and thus guide and
impart a perfectly parallel descending motion to the bar, as such bar is pushed side-
ways by its extremity coming into contact with the door jamb or window frame in
the act of closing the door or window.
It will be apparent that instead of the angular projections e anti-friction pulleys
may be substituted and that instead of the projections or anti-friction pulleys being
secured to the bar and the apertures formed in the rebate that the same may be
reversed and the projection formed or pulleys mounted upon the rebate and the
apertures in the upper edge of the bar, or a pair of anti-friction pulleys may be used
on either side of each aperture. By reference to Figs. 2 and 3 it will be observed
that the bar is capable of being placed in the rebate so that its extremity shall project
at either side of the door or window and thus my improved draught preventer may be
considered to be reversible and applicable to right or left hand doors or windows.
To impart to the bar c the necessary and constant tendency to rise in its rebate
immediately it is "let go " I employ a steel bow spring g the extremities of which
pass through eyes h screwed into the upper edge of the bar and retained between the
studs i. i whilst the central portion of such spring is suspended over a grooved
pulley or roller j capable of sliding to and fro in a bracket & screwed on or otherwise
secured to the upper part of the rebate.
In this manner I obtain a bow spring action by which friction is reduced to the
minimum and which spring is formed to be durable and effective in action.
I would here remark that the bow spring might with equal advantage be fixed in
the rebate and the pulley bracket secured to the upper edge of the bar.
Having thus particularly described and ascertained the nature of this my said
invention and in what manner the same is to be performed I wish it to be
understood that I make no claim to a rebated moulding containing a longitudinal
sliding bar and operated by coming in contact with the door or window jamb as I am
well aware that such an arrangement and combination of parts is well known nor do
I confine myself to using my improved angular projections and corresponding
apertures or equivalent anti-friction pulleys in conjunction with a bar operated by a
bow spring as hereinbefore described and illustrated as it will be obvious that they
are equally applicable to guiding bars for the same purpose fitted with the other
spring arrangements, but what I claim is :-
1st. In a draught preventer for doors and windows the employment of a pair
of angular projections taking into a corresponding pair of apertures or the anti-
friction pulley equivalents whereby a reversible action is obtained substantially as
and for the purpose hereinbefore described and illustrated on the accompanying
drawing.
2nd. In a draught preventer for doors and windows the use and application of
a bow spring in combination with a groove pulley mounted and operated substantially
as and for the purposes hereinbefore described and illustrated on the accompanying
drawing.
JOHN G. WILSON,
Patent Office,
55, Market Street, Manchester,
Agent for the Applicant.