An Improved Method of and Means for Hingeing Doors and Gates, being a Modification of the Ordinary Butt and Hinge both in its Make and its Method of Attachment.
Year: 1894

page_text: Date of Application, 4th Aug., 1894
Complete Specification Left, 4th May, 1895-Accepted, 22nd June, 1895
PROVISIONAL SPECIFICATION.
An Improved Method of and Means for Hingeing Doors and Gates,
being a Modification of the Ordinary Butt and Hinge both in its
Make and its Method of Attachment.
I, WILLIAM GRIFFITH of 61 Wellesley Road, Croydon, Surrey, Retired
Congregational Minister do hereby declare the nature of this invention to be as
follows:-
Whereas butts & other hinges for doors & gates are now so made & set that the
axis of a lower and upper one is a perpendicular line, or, if not a perpendicular line,
is in a plane even with or parallel with the suspended door or gate, this modification
requires them to be so made & set that their axis shall be out of perpendicular and
out of the even and parallel planes of the door or gate suspended by them. The
lower butt or hinge must stand out, more or less, in comparison with the upper
one, and the protrusion be regulated partly by the height of the said door or gate,
and partly by the strength desired in the fall-to action.
Dated this 3rd day of August 1894.
WILLIAM GRIFFITH.
COMPLETE SPECIFICATION.
An Improved Method of and Means for Hingeing Doors and Gates,
being a Modification of the Ordinary Butt and Hinge both in its
Make and its Method of Attachment.
I WILLIAM GRIFFITH of 61 Wellesley Road Croydon Surrey Retired
Minister 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 :-
My improvement is applicable to butts & those hinges by which a door or gate
can open out only one way. Whereas butts & other hinges for doors & gates are
now so made & set that the axis of the upper & lower one is a perpendicular line
even with or parallel with the suspended door or gate or its support my improve-
ment requires them to be so made & set that their axis shall be out of perpendicular
& out of the even & parallel planes of the door or gate or its support. The axial
line of the butts or hinges must stand out from the perpendicular of the door or
gate or from its support more at the bottom than at the top in proportion to the
height of the door or gate and also in proportion to the strength required for the
closure.
The butts (Sheet I drawings) are designed for a door six feet high & requiring
a sharp closure. The upper one (Fig. II, Fig. 2) should be set not more than six
inches clear from top of door; and the clear distance between the butts (see D.
Sheet I) should he three feet four inches. These distances are regulated by the
protrusion given to the lower butt in comparison with that of the upper one.
Each plate in this pair of butts, & in all butts made according to this Specification,

page_text: has three distinguishable though inseparable parts shewn at A. B, & C, (Sheet I.).
A shows the screw part for attachment; B, the protruding part which is essentially
wider in the lower butt than in the upper one; C shows the hinge or socket
part.
Shoulders are cut upon the plates & markeds (Fig. I & Fig. II. Sheet I,
drawings). They are entirely for guidance in fixing. They must be set flush
with the face of the door & its support. They regulate the hinge-line of the butts
and are made to preserve the same ratio of incline (in relation to the perpendicular)
in the one butt as in the other. For mathematical precision the incline through
the butt itself should shew a variation of part of an inch between the bottom
shoulders & the top oues, but that degree is not noticeable in a small drawing. It
must, however, be carefully attended to in the making.
Fig. 1. (Sheet I) shews the lower butt open, & its three parts in their proportions
to each other; Fig. 1. (same sheet) shews the same butt fixed & closed, & the parts
visible when the door is shut.
Fig. 11 (Sheet I) shows the upper butt open, & its three parts in their pro-
portions to each other; Fig. 2 (same sheet) shews the same butt fixed & closed,
& the parts visible when the door is shut.
The drawings on Sheet I show a gate-post (or pier) A, A.', with hinge-hooks, a, b,
& a, b, in position to receive hinge-sockets; & the head of a gate B, B', with
sockets e, d, &, d, in position for hanging on the hooks a & b, or a¹ & b.
When the gate is so hung A & B face each other & the dotted lines ep & e p
(each central & perpendicular) are in the same perpendicular plane face to face.
A & B' show side views of the gate-post or pier, & the gate-head, respectively.
The incline of the hinge-axis, established by protruding the lower hinge a greater
or less distance from the perpendicular, might be carried into the setting of the
hooks and sockets, but in gates the same end is more easily secured by slightly
tapering the hooks, or somewhat enlarging the sockets.
The degree of protrusion from the perpendicular in the socket is the same as
that in the hook.
Having now particularly described & ascertained the nature of my said inven-
tion & in what manner the same is to be performed I declare that what I
claim is:
1. A make of butt & hinge that allows the axial line of two or more when fixed
to run out of perpendicular & to lean toward the perpendicular from bottom
to top-
2. A method of hanging a gate or door meant to open out one way only by
protruding the axle of a lower butt or hinge farther from the perpendicular thau
the higher one.
Dated this 3rd day of May 1895.
WILLIAM GRIFFITH.