Mechanism for Controlling and Aiding the Closing of Doors, Flaps, and Windows.
Year: 1899

page_text: PROVISIONAL SPECIFICATION.
Mechanism for Controlling and Aiding the Closing of Doors, Flaps,
and Windows.
I. HAYDON PARKER, of 54, Avenue Road, Forest Gate, in the County of Essex,
Railway Coach Builder, do hereby declare the nature of this invention to be
as follows:-
My invention consists in a mechanism for controlling and aiding the closing of
doors, flaps and windows and is applicable to doors windows and flaps whether
with vertical or horizontal hinges in houses and other structures and especially
in railway carriages and wagons. It is of special advantage as applied to railway
carriage doors, wagon side doors, wagon bottom drop doors and wagon side drop
doors because of its simplicity, strength and cheapness.
The mechanism in one form consists of a rod or plunger and of a tube, the
former sliding in the latter, one of these parts being jointed to a bracket on the
door and the other jointed to a bracket on the structure to which the door is
applied, and of a helical or other suitable spring enclosed in the tube and having
the tendency to force the plunger and the tube apart. The rod may act as a
piston or plunger in the tube so as to produce an air cushion therein.
In another arrangement I provide a spring placed horizontally in the case of
vertically hinged doors, and vertically in the case of horizontally hinged doors
fitted to which at right angles is a rod or plunger jointed to a bracelet fixed on
the structure to which the door is applied.
On one of the bracelets to which the rod or tube is jointed is provided a means
of taking up" or "letting out" the rod or tube so as to allow for any loss or
variation of power in the spring.
The action of the spring is to control and aid the closing of the door, and
this is of special adavntage in the operation of lifting a railway wagon bottom
drop door and side drop door as it will assist in the lifting of same as soon as
it has been pulled a little forward so as to be just beyond the vertical pendant
position.
Dated this Panutaanth day of Varah 1900.
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.
Mechanism for Controlling and Aiding the Closing of Doors, Flaps,
and Windows.
I, HAYDON PARKER, of 54, Avenue Road, Forest Gate, in the County of Essex,
Railway Coach Builder, do hereby declare the nature of this invention and in
Price S1

page_text: what manner the same is to be performed, to be particularly described and ascer-
tained in and by the following statement:-
My invention consists in a mechanism for controlling and aiding the closing of
doors, flaps and windows and is applicable to doors, windows and flaps whether
with vertical or horizontal hinges in houses and other structures and especially
in railway carriages and wagons. It is of special advantage as applied to railway
carriage doors, wagon side doors, wagon bottom drop doors and wagon side drop
doors because of its simplicity, strength and cheapness.
Fig. 1 of the drawings is a front elevation of a wagon side drop door and so
much of the wagon body as is necessary to illustrate the application of my
invention to the said drop door. Fig. 2 is a side view. The drop door A is
hinged below at B in the usual manner. C is a rod which at its lower end is
jointed to the underframe of the wagon at a point D a little below the centre
of the hinge. Upon the rod C and resting against a shoulder C is mounted a
helical spring E the upper end of which bears against a bracket F that is fixed
to the door A. The spring may be enclosed in a tube G. From Fig. 2 it will
be understood that the spring E at this point, when the door is being raised from
the vertically pendant position, and has been pulled a little forward, begins to
aid the effort of raising the door and that this materially assists the labour of
raising it.
Fig. 3 is a front elevation of a wagon side drop door with a slightly different
arrangement of the parts, the rod C, in this case, being continued above the
shoulder Cinto two rods C each provided with a spring E.
In Fig. 4 the rod carries a carriage spring E the ends of which bear against
the bolts F on the door; the action is the same as in the previous figures.
Adjustment for the spring rod C may be provided by means of a nut to
increase or decrease the initial compression of the spring.
Fig. 5 shews an ordinary door A hung on vertical hinges B and having my
invention applied thereto, C being the rod which at one end is jointed to the
bracket D on the door post its other end bearing against the spring E in a tube G
which is attached to the bracket F on the door.
The rod C may act as a piston or plunger in the tube G so as to produce
an air cushion therein.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is
The application and use with doors, flaps or windows of a rod or plunger at
one end jointed to the door at a point beyond the centre of the door hinge and a
spring or springs mounted on the other end of the rod and bearing against a
bracket or other fitting on the door, all so arranged that the spring assists in
closing the door, substantially as described and shewn.
Dated this 14th day of December 1899
JENSEN & SON,
77, Chancery Lane, London, W.C., Patent Agents.