An Improved Hinge for Doors and Gates.
Year: 1890

page_text: Date of Application, 3rd June, 1890-Accepted, 26th July, 1890
COMPLETE SPECIFICATION.
An Improved Hinge for Doors and Gates.
I, HARRINGTON FARMER, of Castle Gresley, near Burton-on-Trent, Derbyshire,
Engineer, do hereby declare the nature of this invention and in what manner the
me is to be performed, to be particularly described and ascertained in and by
he following statement :--
This invention consists in the herein described new or improved hinge for doors
nd gates which is so constructed that it will cause the door or gate to close when
pened from either side and also maintain the door or gate open when the same is
pened beyond a certain point.
Referring to the accompanying sheet of drawings
TI
om pian one of the hinges of the same separately on an enlarged scale, an
Fig. 7 represents in elevation and in plan separately that part of the said hinge
which is fixed to the gate post;
Fig. 8 represents in elevation and in plan a door hinge constructed according to
this invention, and
Fig. 9 shews the same hinge with the flaps turned at right angles.
The same letters of reference indicate the same or corresponding parts in all the
Figures of the drawing.
22
Referring firstly more particularly to Figs. 1 to 6 both inclusive, a is the gate post
and is the gate. The hinge consists of an upper knuckle e fixed to the gate and a
lower knuckle d fixed to the gate post by a bolt e or otherwise and furnished with the
upright hinge pin f on which the knuckle e turns. The meeting faces of the
knuckles c and d have inclined surfaces to match each other (which are portions of
screw threads) but instead of being inclined only in one direction as in an ordinary
rising butt hinge these surfaces incline both to the right and left hand, that is to
say, the lower surface of the knuckle c and the upper surface of the knuckled are
each divided into four (preferably) equal parts so that, as will be seen by an
examination of the drawing, they have each two V shaped notches (marked
respectively c¹ and d¹) and corresponding V shaped projections (marked respectively c²
and 2). When the gate is closed (see Figs. 1 and 2) it is maintained in this position
against a slight pressure by the inclined projections on one knuckle fitting into the
inclined notches in the other knuckle. When the gate is swung open from either
side to any angle less than a right angle and released the meeting inclined surfaces
on the knucles cause the gate to close. If the gate is swang open from either side
beyond a right angle and released the projections c² will have passed the projections d²
and the meeting inclined surfaces on the knuckles will cause the gate to swing
farther open and to remain so.
The inclines on the butt hinge illustrated by Figs. 8 and 9 are arranged and
operate similarly to those on the gate hinge herein before described and illustrated
by the preceeding Figures. In this example one of the flaps has two knuckles
provided with similar inclined surfaces and both the top and bottom faces of the
single knuckle on the other flap are similarly inclined so that the hinge can be used
either end up to serve either for a right or left hand door.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
The improved self closing hinge for doors and gates herein before described and
illustrated by the accompanying drawing having inclined meeting surfaces arranged
so as either to close the door or gate or maintain the door or gate open when opened
pasi a certain point substantially as hereinbefore set forth.
n
1000
CHARLES BOSWORTH KETLEY,
Agent for the Applicant.