IMPROVED APPARATUS APPLICABLE TO THE HANGING OF DOORS, GATES, AND WINDOWS, AND FOR CLOSING OR HOLDING OPEN THE SAME WHEN REQUIRED
Year: 1854

page_text: LETTERS PATENT to Henry Green, of Liverpool, in the County of Lan-
caster, Whitesmith and Ironmonger, for the Invention of "IMPROVED
APPARATUS APPLICABLE TO THE HANGING OF DOORS, GATES, AND WINDOWS, AND
FOR CLOSING OR HOLDING OPEN THE SAME WHEN REQUIRED."
Sealed the 7th November 1854, and dated the 31st July 1854.
PROVISIONAL SPECIFICATION left by the said Henry Green at the
Office of the Commissioners of Patents, with his Petition, on the 31st
July 1854.
I, HENRY GREEN, of Liverpool, in the County of Lancaster, Whitesmith
and Ironmonger, do hereby declaro the nature of the said Invention for
"IMPROVED APPARATUS APPLICABLE TO THE HANGING OF DOORS, GATES, OR WIx-
DOWS, AND FOR CLOSING OR HOLDING OPEN THE SAME WHEN REQUIRED," to be as
follows:-
In applying this Invention to doors, windows, or gates, it is proposed to
mount them on gugeons .or pivots, working in suitable bearings fixed above
and below the door, window, or gate; on the back of one of the gugeons or
pivots there is a short stud, which acts as the axle for a small friction roller,
which roller works upon and against an inclined plane, which is formed on the

page_text: end of a weighted lever. By this arrangement it will be seen that if the pivot
is turned, the friction roller will travel upon the inclined plane, and as it (the
friction roller) does not rise, it will depress that end of the lever and raise the
reverse end thereof, upon which the weight is placed. Upon the lever being
freed from external pressure, the inclined plane pressing against the edge of
the friction roller will cause it to roll to the bottom of the inclined plane, and
consequently close the door, window, or gate to which it may be connected. At
the top of the inclined planes (or plane, as the case may be,) there are notches
formed, so that the friction roller, falling therein, will remain stationary and
hold open the door, window, or gate to which it is attached, until it (the roller)
is forced out of the recess by external aid, upon which the door, window, or
gate to which it may be connected will immediately close.
That this Invention may be more readily seen and, understood, hereunto is
annexed Drawings (partially in section) of an apparatus constructed according
to this plan, and shown as applied to a door. Like letters refer to similar parts.
Figures 1 and 2 are vertical sectional elevations of the apparatus; and
Figure 3 is an horizontal view of the end of the lever, shewing the inclined
planes and notches to receive the friction roller when the door is required to
be held open. A, pivots or gugeons, and strap plate attached thereto, for
fixing them to the door; B, bearing and strap plate for upper gugeon (A);
B', bearing for the lower gugeon (A); C, stud or axle on the back of the
lower pivot (A), upon which revolves D; the friction roller, which travels
upon E, the inclined plane, formed on the end of F, the weighted lever; G, a
slide weight on the lever (F), for regulating the power. required for closing the
doors; e, notches at the top of the inclined planes to receive the friction
roller, and prevent its returning down the inclined plane when the door is
required to remain open; H, a stop fixed on the floor, which can be turned so
as to prevent the door being thrown sufliciently back to allow the friction roller
to fall into the groove e when the door is not required to remain open. I, a
box, in which the chief working parts are enclosed, and which it is proposed
should be partially filled with oil.