An Automatic Door Closer and Hinge Combined.
Year: 1894

page_text: Date of Application, 27th Dec., 1894
Complete Specification Left, 23rd Sept. 1895-Accepted, 21st Dec., 1895
PROVISIONAL SPECIFICATION.
An Automatic Door Closer and Hinge Combined.
JOHN POTTER 120, Upper Thomas Street Aston, Bumingham Toolmaker
do hereby declare the nature of this invention to be as follows:-
This invention consists of two pieces of metal, each bent or cast to a right angle,
and are jointed at the angles so as to form a double butt hinge each part of
which will be strengthened at the inner side of the angles, thus affording a back
bearing which gives strength to the hinge & relieves the strain on the pin. This
hinge is not only affixed to the door and Jamb in the ordinary manner but is
also screwed to the back of the dor and likewise the jamb, the screws fastoning
the hinges crossing each other at right angles binds the wood and thus prevent
the splintering of the wundwork as common in fixing the ordinary hinge
At the back of the binge are affixed two pillars, between which is a spring
to one end of which a small roller is attached by a pin running through two claws,
this roller works over an arc or cam affixed to the second part of the hinge and
at right angles to same, this arc or cam bas a semicircular hollow on the edge
at one end, into which the small roller at end of spring drops when the door has
attamed the angle at which it is required to remain should the same not be required
to be completely closed, this is regulated by a screw at back of the pillars working
though a clip into a fixed nut between the pillars with lock nuts on each side the
clip, this clip has round holes, a piu passing through clip, pillars & spring by a slot
cut in the pillars thus allowing the same to be moved backwards and forwards
according to the action of the screw in hxed nut thus causing the door to be
completely closed or left open to any distance required thus dispensing with straps
lutch & cord now in ordinary use.
On the top of & between the upright pillars & immediately over one leg of the
spring is a screw working upon the same through a fixed nut by which the spring
is regulated, causing the door to close quickly or otherwise.
This article is also made as a "door closer" only, in which case it is made
without the hinge joint
Dated 24th December 1891
An Automatio Door Closer and Hinge Combined.
JOHN POTTER 120, Upper Thomas Street Aston Warwickshire Toolmaker
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 consists of two pieces of metal A, each beut or cast to a right
angle and are jointed at the angles so as to form a double hinge each part of which
is strengthened at the inner side of angle, thus affording a back bearing which

page_text: gives strength to the hinge and relieves the strain on the pin connecting joint. This
hinge is affixed not only to the door and jamb in the ordinary manner but is also
screwed to the back of the door and likewise the jamb the woodscrews fastening
the hinges crossing each other at right angles binds the woodwork and thus
prevents it from splintering so common in fixing the ordinary hinge.
At the back of that part of the hinge which is fixed on door and hereafter
designated as the foundation plate B are two bracket shaped elongated longilateral
pillars C cast or fixed edgeways on the foundation plate and between which is a
spring D formed with a loop on top through which a pin E connecting pillars clip
and spring passes, at one end of spring a small roller F is attached by a pin passing
through same, this roller works over an ate or cam G affixed to the second part of
hinge and at right angles to same at the other end of spring is a hole through
which a thumbscrew H regulating same works
This nic or cam has a semicirculai hollow on the edge at one end into which the
small roller at end of spring drops when the door has attained the angle at which
it is required to remain should the same not be requned to be completely closed,
this is regulated by a thumbscrew at back of the pillars 1. working through a
clip J. into a fixed nut between the pillars with lock nuts, this clip is formed by a
piece of flat metal cast or bent in the form of a strap embracing the outsides of
pillais and having a hole in ench side by which it is connected with spring and
pillars by a pin passing through slots cut in pillars and loop in spring, this clip has
also a hole at back through which a thumbscrew passes to lock nuts on inside of
chp thus allowing the chip to be moved back or forward according to the action of
thumbscrew in fixed nut whereby the door can be completely closed or left open to
any distance required up to an angle of 30 degrees thus dispensing with strap, cord
& weight in ordinary use as a door closer.
At the end of the foundation plate and in close contiguity to the joint is a small
cavity or recess L formed by a slot opened in the plate with a semicirculai
cover.ng at back to allow the horn or point of arc or cam affixed to back of hinge
to work free so as to allow door to be thrown freely back, on the part of hinge
affixed to Jamb is a similar recess or cavity K to allow the small roller working
over aic or cam to clear itself should the door be violently opened.
On the end and top of spring and between the pillars is a thumbscrew acting
upon spring by a hole through same and working on to a moveable spring boss M
which works back or forward on foundation plate according to the action of
thumbscrew at back of clip & according to the distance the door is required to
remain open or completely closed.
This article 18 also made as a door closer only in which case it is made without
the hinge joint.
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 shape and double bearing of hinge.
2nd. The position of woodscrews fastening hinge to door and jamb strengthening
same.
3rd. The action of the spring carrying a roller which works over an arc or cam
4th. The shape and form of the elongated lougilateral pillars between which the
spring works.
5th. The shape and position of clip acting upon spring by a pin passing through
clip, slots in pillars and bend or loop in spring acted upon by a thumbscrew at back
of clip.
6th. The action of thumbscrew on clip regulating the closing of the door.
7th. The action of thumbscrew working through end of spung regulating strength
or power of same.
8th. The are o cam on which the roller carried by the spring works also the
cavities of recesses in which they dip

page_text: 9th. I claim the invention as a door closer only or as a door closer and hinge
combined or as a hinge only.
10th. I also claim the component parts individually and collectively as an
original invention.
Dated this 23rd day of September 1895.
JOHN POTTER,
120, Upper Thomas Street, Aston, Toolmaker.