A New or Improved Door Stop.
Year: 1894

page_text: Date of Application, 19th Jan., 1894
Complete Specification Left, 12th Mar., 1894-Accepted, 14th Apr., 1894
PROVISIONAL SPECIFICATION.
A New or Improved Door Stop.
I, WILLIAM TAYLOR of 8 Halton Street, Failsworth, near Manchester, Joiner,
do hereby declare the nature of my said invention to be as follows :—
This invention consists of a device for preventing the knobs or handles of doors
doing damage to a wall when flung open and consists essentially of a small cylinder,
and piston with an elastic cushion at the back of the piston so that when the piston.
is pressed into the cylinder and the pressure relieved, it rebounds to its former
position. This device is fitted into the wall where the door knob or handle will.
strike.
The cylinder is, by preference made of wood and of a square formation so as to
fit into a brick wall and take the place of a brick. The piston is made rather wide-
at one end against which the door knob or handle strikes, but narrows down to a
spindle form and fits into a tube in the rear portion of the cylinder. The end of
this tube contains the elastic cushion preferably in the form of a piece of soft india
rubber or a spiral or volute metallic spring. The rear end of the cylinder is
covered by a plate fixed by screws so closing up the tube end and forming an
abutment for the rubber or spring.
A set of pins on the piston taking into slots in the tube or vice-versa serve to
arrest the movement of the piston and prevent its rebounding out of the cylinder
after it has been struck by the door knob.
It will be obvious that the same or a similar arrangement of cylinder and
piston and cushion may be applied to the door or to the door- handle or knob, the
piston portion striking a plate on the wall.
Dated this 18th day of Januar, 100
JOHN G. WILSON & Co.,
55, Market Street, Manchester, Agents.
COMPLETE SPECIFICATION.
A New or Improved Door Stop.
I, WILLIAM TAYLOR of 8 Hulton Street, Failsworth, near Manchester, Joiner,
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 consists of a device for preventing the knobs or handles of doors
doing damage to a wall when flung open and consists essentially of a small cylinder
and piston with an elastic cushion at the back of the piston, so that when the piston
is pressed into the cylinder and the pressure relieved it rebounds to its former
position. This device is fitted into the wall where the door knob or handle will
strike.
And in order that my said invention shall be the more readily understood and
carried into practical effect I have hereunto annexed a sheet of drawings and will
now proceed to describe the same with the assistance of the various figures and
letters of reference marked thereon.
Fig. 1 is a front view and Fig. 2 a transverse section of my improved door stop
shewn fitted into a wall..

page_text: Figs. 3 and 4 are similar views of my improved door stop applied to the handle
of the door.
Figs. 5, 6, and 7 are diagram views shewing the various applications of my
invention, Fig. 5 shewing the stop in the wall, Fig. 6 shewing the stop in the door
handle and striking a plate or buffer on the wall and Fig. 7 shewing the stop in the
wall for protecting it from being struck by the key.
In accordance with my invention and as applied to the wall (see Figs. 1 and 2)
(A) is the cylinder, by preference made of wood and of a square formation so as to
take the place of a brick. (B) is the piston made rather wider at one end as
illustrated to fit into the wider end of the cylinder, and at the other end narrowing
down to a spindle form to fit into the narrower part of the cylinder. Behind this
piston is the spiral spring (C) bearing against the piston at one end and at the
opposite end against the plate (D) screwed onto the back of the cylinder. The
narrow portion of the cylinder core is fitted with a metal tube (E) in which a set
of slots are formed and into which pins or pegs on the piston take to limit the
movement of the piston.
It will now be obvious that if this device be placed in the wall at the point
requiring protection the door knob, handle or key will strike the wider end of the
piston and such piston will slide into its cylinder gently compressing the spring (C)
and thus destroying the force of the blow. As soon as this is effected the piston
rebounds to its former position, the pins and slots aforesaid preventing the piston
coming out of the cylinder. The same or a similar arrangement of cylinder and
piston and spring cushion may be applied to the door handle or knob of the door
or to the door itself, the piston portion striking a plate on the wall.
Figs. 3 and 4 shew my invention as applied to the knob of a door latch, the knob
being "cored" out to receive the piston (F) and spring (G).
In this case the piston protrudes beyond the cylinder as illustrated and strikes
a plate (I) on the wall, and is prevented coming too far out of the knob by the
bush (J). The plate (I) consists, by preference of a piece of stamped metal with a
centre portion of india-rubber to better resist the blow of the door knob. By forming
the tip of the piston of india-rubber or other soft material the plate (1) may be
dispensed with.
It will be apparent that the arrangement of piston and cylinder may vary
according to the form or make of the door knob.
Having thus 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.-
1st. A door stop comprised of a cylinder (A), piston (B) spring (C) plate (D)
let into the wall to be protected substantially as hereinbefore described and
illustrated on the accompanying drawing.
2nd. A door knob or handle fitted with a piston and spring and working in
conjunction with the plate (I) or otherwise substantially as and for the purposes
herein before described and illustrated on the accompanying drawing.
Dated this 5th day of March 1894.
JOHN G. WILSON & Co.,
Agents.