Improvements in Door Springs and Checks.
Year: 1892

page_text: Date of Application, 15th Jan., 1892
Complete Specification Left, 11th Oct., 1892-Accepted, 26th Nov., 1892
PROVISIONAL SPECIFICATION.
Improvements in Door Springs and Checks.
We, EDWARD WARD COOPER, Machinist, and EDWARD TURRALL, Manu-
facturer, both of King Street, Coventry, in the City and County of Coventry, do
hereby declare the nature of this invention, to be as follows:-
Our invention relates to improved door springs and checks, and may be substan-
tially described as follows:-
1:
13
We enclose a spiral spring within a suitable casing or tube. The. spring is
retained in a state of compression, say by flanged collars, or by the ends of the tube
being "spun
or turned over sufficiently for the purpose indicated.
A rod or "plunger
passes through the spring, and is fitted with suitable
collars or projections, so placed that either end of the spring may be acted upon.
One end of the rod or plunger is made to work in or is jointed to or carried by
a suitable bracket which is fixed to the door frame. The outer case or tube is
held in position by a hinged clip or joint, which latter is fixed to the door. The
hinged joint is preferably made to grip the tube by tightening a wing-nut or thumb
screw.
By thus making the tube longitudinally adjustable, relatively to the hinged joint,
and in combination with the double-acting spring described, we obtain complete
control of the door; the latter being returned to any desired position, closed,
wide open, or any intermediate state, thus acting as a check as well as a door
spring and dispensing with check straps commonly used to keep doors partly
open.
By the adjustment of the tube or case in relation to the hinged joint, we also
secure a ready and effective method of adjusting the strength of the spring to suit
a particular door.
If, for any reason, it is desired for a time to dispense with the services of the
door spring, it is quite unnecessary to detach any part, as is usual in ordinary door
springs. All that is necessary according to our invention is to loosen the wing nut
referred to. The case or tube is then free to slide in the hinged joint, and the
spring has no effect whatever upon the door.
We may also add a bell or alarum, preferably fixed on the case or tube, and so
that it will be actuated by the rod or plunger. The door may thus be set ajar
or in any required position, and any attempt to move the door will at once give an
alarm.
Dated this 15th day of January 1809
BREWER & SUN,
33, Chancery Lane, Agents for Applicants.
COMPLETE SPECIFICATION.
Improvements in Door Springs and Checks.
We, EDWARD WARD COOPER, Machinist, and EDWARD TURRALL, Manu-
facturer, both of King Street, in the City and County of Coventry, 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 :—
Our invention relates to improved door springs and checks as hereafter described,
whereby means are provided for adjusting a door to any desired position, either
wide open, closed, or partly open, so that when moved away from that position, it
will automatically return to it. This return is effected by means of a spiral spring
L Prins S77

page_text: contained in a cylinder and compressed by one of two pistons or projections on a
piston, when such cylinder is moved in either one direction or the other by the
movement of the door. The adjusting device, fastened to the door itself, may be
tightened or loosened by a wing-nut or thumb screw, so as to be capable of being
made to firmly hold the cylinder, which is thus kept in the same position relatively
to the door, to whatever angle the door may be opened or closed; but such
opening or closing causes one of the pistons or projections to enter the cylinder
and compress the spring, which therefore, on being released, returns the door to
place.
In order that our invention may be fully understood, we will now further
describe same with reference to the accompanying drawings.
Fig. 1 is a sectional front view and Fig. 2 is a sectional plan, the latter figure
shewing a door held in two different positions, of a door spring and check constructed
according to our invention.
>>
According to our invention we enclose a spiral spring A within a suitable casing,
tube, or cylinder B. This spring A is retained in a state of compression, say by
collars or washers C, the ends of the tube B being "spun or turned over suffi-
ciently to retain the collars within same, and consequently this spring A acts on
or towards each end of the tube B.
A rod or plunger D passes through the spring A. and washers C, and is fitted
with suitable collars or projections E so placed that either end of the spring A
may be acted upon.
One end of the rod or plunger D is made to work in or is jointed to or carried
by a suitable bracket F which is fixed to the door frame G. The outer case or
tube B is held in position by a hinged clip H, which latter is fixed to the door I.
The hinged clip H is preferably made to grip the tube by tightening a wing-nut
or thumbscrew K.
By thus making the tube B longitudinally adjustable, relatively to the hinged
clip H and in combination with the double acting spring described, we obtain
complete control of the door, the latter being returned to any desired position,
closed, wide open, or any intermediate state, thus acting as a check as well as a door
spring and dispensing with the check strap commonly used to keep the door partly
open.
By the adjustment of the tube or case B as described in relation to the hinged
joint or clip H, we also secure a ready and effective method of adjusting the strength
of the spring to suit a particular door, or this may be accomplished by threading
the rod D and providing a nut working thereon.
If, for any reason, it is desired for a time to dispense with the services of the
door spring, it is quite unnecessary to detach any part, as is usual in ordinary door
springs. All that is necessary according to our invention is to loosen the wing-
nut K; the case or tube B is then free to slide in the hinged joint or clip H, and
the spring has no effect whatever upon the door.
We may also add a bell or alarm L, preferably fixed on the case or tube B, and
so that it will be actuated by the nut E on the rod or plunger D. The door may
thus be set ajar or in any required position, and any attempt to move the door will
at once give an alarm, because the bell is acted on and sounded directly the door is
moved.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we are aware that the
adjustment of a door to return to a fixed or predetermined position is not in itself
new; nor is the combination in the same cylinder of a closer and check new ;
neither is a nut on the spindle or piston rod to adjust the tension of the spring
new; but what we believe to be new and therefore claim as our invention is :-
-
1. In door springs and checks, the employment of a tube such as that
marked B, longitudinally adjustable relatively to the hinged clip such as that
marked H, in combination with a double acting spring such as that marked A,

page_text: forming a door spring and check combined, whereby a door is or can be returned
to any desired or predetermined position that may be required, whether that be
closed, wide open, or in any other intermediate position, and substantially as
hereinbefore described and illustrated with reference to the accompanying
drawings.
2. In door springs and checks, the double acting spring enclosed in a cylinder B
by movable ends or washers C, the cylinder being carried by the door or movable
part, and being adjustable in position in relation thereto, in combination with a
hinged rod D carried from the fixed part or frame and passing through the
cylinder, washers, and spring, the rod having shoulders or equivalent parts E, E,
all acting substantially as and for the purposes herein described.
3. In door springs and checks as claimed by Claim 1, the combination there-
with of a bell or alarm, which is or may be sounded by the movement of the
door, no matter in what position that may be, and substantially as set forth.
Dated this 11th day of October 1892.
BREWER & SON,
33, Chancery Lane, London,