Improvements in Apparatus for the Closing of Doors and Mechanism Employed therefor.
Year: 1889

page_text: Date of Application, 25th Oct., 1889
Complete Specification Left, 25th July, 1890-Accepted, 13th Sept., 1890
TRUVIDIONAL SPECIFICATION.
Improvements in Apparatus for the Closing of Doors and Mechanism
Employed therefor.
EDWIN CHARLES URRY, Engineer of Upper Holloway, London and GUILLERNIO
ANTONIO FARINI Author of Dartmouth Lodge Perry Vale Forest Hill do hereby
declare the nature of this invention to be as follows:-
Our invention relates to apparatus employed for the automatic closing of office and
other swinging doors.
In carrying our invention into practice we construct a metal frame work, or box,
which is let into the flooring beneath the door as in common, the top plate being flush
with the flooring, in the said frame-work or box, a radius arm resting in a bottom
centre and passing through the top plate is connected to the shoe to which the door is
attached thus ensuring the radial movement of the said arm with the door each time
it is opened. At the end of the said arm a small friction roller or wheel is placed
between suitable bearings and travels round on either side a rocking quadrant or
segment of a circle.
When the door is closed the said quadrants or segments stand in an inclined
position towards the centre where they are connected by a knuckle joint between
which the small friction wheel rests. Underneath the said quadrants or segments we
place spiral or other suitable form of springs which are depressed on either side the
door may be opened, by the small friction wheel running over the quadrant or
segment above described. On the door being released the power put into the said
springs by the opening of same will be given out and the quadrant or segment forced
back into its inclined position at the same time driving the friction wheel to the
centre causing the door to return to its normal position.
.
We may also construct this apparatus with a stationary inclined quadrant or
segment the small friction wheel riseing and falling in its course.
Dated this 25th day of October 1880
EDWIN CHARLES URRY,
G. A. FARINI.
COMPLETE SPECIFICATION.
Improvements in Apparatus for the Closing of Doors and Mechanism
Employed therefor.
EDWIN CHARLES URRY of 232 Goswell Road Islington N. in the County of
Middlesex, Engineer, and GUILLERNIO ANTONIO FARINI of Dartmouth Lodge,
Perry Vale, Forest Hill in the County of
Gentleman, 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 :-
In carrying our invention into practice we construct a metal frame-work or box
which is let into the flooring beneath the door as in common the top plate being flash
with the flooring, in the said frame-work or box a radius arm resting on a bottom
centre and passing through top plate is connected to the shoe to which the door is
attached, thus ensuring the radial movement of the said arm with the door each time
it is opened.
At the end of the said arm a small friction roller or wheel is placed between
suitable bearings and travels round on either side an independant rocking quadrant
or segment of a circle which have projections a' for checking the door previous to its
coming to rest. When the door is closed the said quadrants or segments stand in an
inclined position towards the centre either horizontal or vertical as hereinafter
.
..

page_text: described and shewn in the drawing where they are connected by a knuckle joint
between which the small friction roller or wheel is placed.
Underneath the said quadrants or segments Figs. 1 and 2, we use spiral or other
suitable form of springs which are depressed on either side. The door may be opened
by the small friction roller or wheel running over the single quadrant or segment on
either side as above described.
On the door being released the power put into the said springs by the opening of
the same will be given out and the quadrant or segment forced back into its inclined
position, at the same time driving the friction roller or wheel towards the centre
causing the door to retain its normal position.
Fig. 3 shews a modification of our invention in which the motion is taken hori-
zontally as herein referred to, the said radius arm and friction roller or wheel running
in the same position as shewn in Figs. 1 and 2, but in place of projections for checking
the closing of the door previous to coming to rest spring buffers h are used for this
purpose.
In the accompanying drawing
Fig. 1 is a longitudinal section showing the quadrants or segments a the radius
arm 6 and the friction roller or wheel c in position, connected to the nuckle joint d
by the pin e. fare the spiral springs.
Fig. 2 is a cross section of Fig. 1 on line a b.
Fig. 3 is a plan shewing the modification above described. In this, the spiral
springs are provided with small friction rollers g at their ends.
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. In an apparatus for the purpose of closing doors the independant rocking
quadrants or segments a in either a horizontal or vertical position in combination
with the radius arm b and the friction roller or wheel c.
2. The spiral or other suitable form of springs f for the returning of the quadrant
to their normal position as the door is closing the friction rollers g.
3. The projections a¹ and spring buffers h for the purpose of checking the closing of
the door previous to coming to rest substantially as herein described & shewn in the
drawing.
Hated this 95th dox of July 1900
E. C. URRY.
G. A. FARINI.