Improvements in Double Action Spring Butt Hinges.
Year: 1895

page_text: Date of Application, 14th Dec., 1995
Complete Specification Left, 14th Sept., 1896-Accepted, 28th Nov., 1895
Date of Application, YU
Complete Specification Left, 14th Sept., 1896 Accepted, 28th Nov., 1895
PROVISIONAL SPECIFICATION.
Improvements in Double Action Spring Butt Hinges.
JAMES ADAMS 7 & 11 Union Street Borough London S.E. Engineer,do
hereby declare the nature of this invention to be as follows:-
This invention relates to that class of spring butt hinges by which doors are
hung to their frames allowing them to swing both ways and returning them to their
closed or normal position.
This invention may be applied to other similar purposes.
In carrying out my invention I proceed mainly as follows.
In one of the hinge plates I form a cavity, at the end of this cavity I fix a tube
and form a seating, for a spiral spring. Within, this cavity. I insert a treble-jointed
lever one joint at each end, the other, between these two end joints. With
this middle joint I connect a screwed rod and nut which I place within the
tube, also within this tube I insert a spiral spring which is charged by the nut
on to its seating.
With the two end joints of the treble lever I connect two links these two links
are at their other ends connected with the hinge knuckle joints and act in unison
with them when the door is opened.
"
Now, the action of my invention is such that when the door is opened either way
one of the links connected with the treble-jointed lever is withdrawn from the cavity
and the spring connected with the lever by the rod and nut becomes compressed,
on releasing the door the tension of the spring in action with the lever and links
closes the door to its normal position of rest.
This apparatus may be made united to, or separate from the double knuckle
hinge.
Dated this 14th day of December 1895.
COMPLETE SPECIFICATION.
Improvements in Double Action Spring Butt Hinges.
JAMES ADAMS 7 & 11 Union Street Borough London S.E. Engineer 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:
This invention relates to that class of spring butt hinges by which doors are
hung to their frames allowing them to swing both ways and returning them to
their closed or normal position. This invention may be applied to other similar
purposes.
In carrying out my invention I proceed as follows reference being had to the
accompanying drawing

page_text: Figs. 5 & 6 plan and elevation of the internal parts. Fig. 5 showing apparatus
when the door is opened.
In one of the hinge plates, a, I form a cavity, b, at the end of this cavity I fix a
tube, c, and form a seating, d, for a spiral spring, e. Within this cavity, b, I insert
a treble-jointed lever, f, one joint at each end, the other between these two end
joints. With this middle joint I connect a screwed rod, g, and nut, h, which I
place within the tube, also within this tube I insert the spiral spring, e, which
charged by the nut, h, on to its seating, d. With the two end joints of the treble-
jointed lever, f, I connect two links, i, i, these two links, i, i, are at their other
ends connected with the hinge knuckle joints, ; ;, connecting the door, k, and
act in unison with them when the door, k, is opened.
Now the action of my invention is such that when the door is opened either way,
one of the links connected with the treble-jointed lever is withdrawn from the
cavity and the spring connected with the lever by the rod and nut becomes
compressed, on releasing.the door the tension of the spring in action with the lever
and links closes the door to its normal position of rest. This apparatus may be
made united to or separate from the ordinary double knuckle hinge.
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.
1st. The links and lever substantially as described and set forth in the drawings
for double action spring butt hinges.
2nd. The general combination of the links and lever as described and set forth
in the drawings.
Dated this 14th day of September 1896.
JAMES ADAMS.