Year: 1897

page_text: Date of Application, 30th Mar., 1897
Complete Specification Left, 30th Dec., 1897-Accepted, 5th Feb., 1898
I, ISIDORE AUGUSTE HÉNOCQ, of Eu (Seine-Inforieure) in the Republic of France,
Miller, do hereby declare the nature of this invention to be as follows;
This invention relates to a butt hinge having a spring action whereby a door
to which it is applied is automatically closed when left ajar and is also maintained
in its fully opened position. In any intermediate position the spring tends to close
the door.
To this end one of the straps of the hinge is fitted, in a recess provided for that
purpose, with two spiral springs which are arranged in the same straight line and
which are fixed at one end to the upper and lower ends respectively of the said
strap; the two other ends are united in the centre of the hinge and extend into a
support or the like terminating in a hook which engages with a pin fixed to the
other strap of the hinge.
The eccentric position of this pin, which is the point of application of the support,
with respect to the axis of the hinge causes the hinge to constantly tend to remain
open, that is to say, to close the door as long as the two straps are
not practically back to back as in this position the support upon which the double
spring acts is in such a position that its pull is exerted on the other side of the
axis of the hinge to that on which it acts when the door is closed or partially
opened.
In carrying out my invention the two straps of the hinge are connected by two
pins arranged in the same axial line at the top and bottom or ends of the hinge;
these pins pass through lugs formed on the straps.
One of the said straps is formed with a recess adapted to receive the double
spring. The outer ends of this double spring are secured to the side of the recess
at the top and bottom of the same. The inner ends of the springs are placed
together and extend into support provided with a hook which engages with a
pin fixed to the second strap at its central part and in a position such that the pin
is arranged parallel and eccentric to the axis of the hinge.
When the door is ajar the springs tend to close the door by opening out the two
straps of the hinge from one another.
When the door is fully open, and the straps are nearly closed back to back upon
one another, the springs tend to pull the straps in the opposite direction that is to
say to maintain the door open.
Two stops are provided on the lugs of one of the straps, the said stops coming
into contact with the other strap when the hinge is fully opened out.
My hinge may be sunk in the door and door frame if desired and in this case the
knuckle of the hinge is arranged so as to form only a slight projection as in
ordinary hinges, that is to say, about half its diameter.
Dated this 30th day of March 1897.

page_text: I, ISIDORE AUGUSTE HÉNOOQ, of Eu (Seine-Inferieure) in the Republic of France,
Miller, 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 a butt hinge having a spring action whereby a door
to which it is applied is automatically closed when left ajar and is also maintained
in its fully opened position. In any intermediate position the spring tends to close
the door.
To this end one of the straps of the hinge is fitted, in a recess provided for that
purpose, with two spiral springs which are arranged in the same straight line and
which are fixed at one end to the upper and lower ends respectively of the said
strap; the two other ends are united in the centre of the hinge and extend into a
support or the like terminating in a hook which engages with a pin fixed to the
other strap of the hinge.
The eccentric position of this pin, which is the point of application of the support,
with respect to the axis of the hinge causes the hinge to constantly tend to remain
open, that is to say,
to close the door as long as the two straps are
not practically back to back as in this position the support upon which the doublo
spring acts is in such a position that its pull is exerted on the othor side of the
axis of the hinge to that on which it acts when the door is closed or partially
opened.
The accompanying drawing represents my butt hinge with all its details,
Figure 1 is a front elevation:
Figure 2 is a horizontal section:
Figure 3 a view shewing the inside of the hinge:
Figure 4 is an elevation of the outer side shewing the hinge open.
Figure 5 is an elevation; and,
Figures 6 and 7 are sections illustrating my improved spring hinge when arranged
to be sunk into the door and door frame.
In carrying out my invention the two straps A and B of the hinge are con-
nected by two pins C, C arranged in the same axial line at the top and bottom or
ends of the hinge; these pins pass through lugs a and b formed on the straps A
and B respectively.
One of the said straps (A for example) is formed with a recess c adapted to receive
the double spring D, D. The outer ends d, d of this double spring aro secured
to the side of the recess c at the top and bottom of the same. The inner ends e, e
of the springs are placed together and extend into a support E provided with a
hook G which engages with a pin f fixed to the strap B at its central part and in
a position such that the pin is arranged parallel with, and eccentric to, the axis
of the hinge as clearly shewn in Figure 2.
This figure shews that the direction of a line passing through the bark against
which the double spring bears and tho axis of the pin f is such that the force of
the spring, which acts in this direction, constantly tends to keep the hinge open.
In this completely open position two small snugs h on the lugs a of the strap A
bear against a flat part of the strap B between the lugs b.
When the door is ajar (see the dotted lines in Figure 2) the direction k, f is
always on the same sides of the axis with respect to the former direction and the
force being exerted in the same direction tends to close the door by opening out
the two straps of the hinge from one another.
When the door is fully open, the straps are nearly closed back to back upon one

page_text: another, as indicated by the dotted lines Figure 2 the direction k, f is transferred
to the other side of the axis of the hinge with respect to its preceding position
and the force of the spring is exerted in the opposite direction, that is to say, so as
to maintain the hinge in the latter position; the door then remains open.
Two stops are provided on the lugs of one of the straps, the said stops coming
into contact with the other strap when the hinge is fully opened out.
My hinge may be sunk in the door and door frame if desired as illustrated in
Figures 5, 6 and 7 and in this case the knuckle of the hinge is arranged so as to
form only a slight projection as in ordinary hinges, that is to say, about half its
diameter.
One of the straps A, that which is provided with the spring is let into the door
frame M. The other strap on which the spring D acts through the medium of
the support E is sunk into the corresponding frame of the door.
is the recess in the door frame and the recess in the door.
Figure 6 shews the door open and Figure 7 shews it closed. In the latter
position the spring D tends to keep the door open or close the same as in the
arrangement hereinbefore described with reference to Figures 1 to 4.
Having now 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:
A spring hinge characterized by the arrangement of the pin which is eccentric
to the axis of the hinge and upon which the spring exerts its force for the purpose
of automatically effecting the closing of the door when it is partially open, the
said hinge being arranged flat-wise or flush with the door and door frame or sunk
into the same.
Dated the 30th day of December 1897.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London, Agents for the Applicant.