AUTOMATIC ATTACHMENTS TO BE ADDLIED TO AS ASED DOORS
Year: 1855

page_text: LETTERS PATENT to John Avery, of 32, Essex Street, Strand, London,
Patent Agent, for the Invention of "AUTOMATIC ATTACHMENTS TO BE
ADDLIED TO AS ASED DOORS" A communication.
Sealed the 19th February 1856, and dated the 25th August 1855.
PROVISIONAL SPECIFICATION left by the said John Avery at the Office
of the Commissioners of Patents, with his Petition, on the 25th August
1855.
I, JOHN AVERY, of 32, Essex Street, Strand, London, Patent Agent, do
hereby declare the nature of the said Invention for "AUTOMATIC ATTACHMENTS
TO BE APPLIED TO GATES AND DOORS," a communication, to be as follows; and
relates to a new and useful attachment to be applied to gates and doors, whereby
a gate or door may be opened or closed by merely operating a lever at either
end of the gate or door. The gate or door may be hung in the usual manner,
having a spring catch of the usual or any proper form. A rectangular box is
sunk a certain depth in the earth near the post to which the gate is hinged,
and in the upper part of this box there is placed a pulley, to which a rope is
attached; the lower end of this rope is attached to a shaft at the lower part of
the said box, and near the surface of the ground.
To the last-mentioned shaft there is attached a crank, and on the opposite
end there is placed loosely an arm, having a spring on its inner side, the end
of which spring catches into notches or recesses in the end of shaft, and prevents
the arm from turning loosely thereon in one direction, so that the shaft may

page_text: be turned in one direction without turning the arm, but not in the opposite
direction.
At one side of the gate there
To the outer end of the said arm a rod is attached, which is connected to the
gate near its back end, or near the end that is hinged to the post. To the
spring catch there is attached a wire, which is connected to the upper arm of a
bell crank in the back stile of the gate. The lower arm of this bell crank has
a wire attached to it, and the lower end of the wire is attached to an arm in
the centre of a bent lever, which has two other arms, one above and the other
below the centre arm. At each side of the gate there are posts, which have
levers on their upper ends. These levers have wires attached to them, and
which said wires are connected to other bell cranks, which are connected by
wires to the two other arms of the bent lever.
is placed a post, which has a catch attached to it to secure or hold the gate
when open. By merely depressing the end of one of the levers on the posts
at each side of the gate the spring catch will be disengaged, and the weight
will turn the shaft; and also the said arm and the gate will be thrown open
by the rod which is connected to the gate near its back end, and the spring
catch will fasten into a catch on the post to secure or hold the gate when
open. The gate is closed in the same way as it is opened. When the weight
has run down it is wound up by turning the crank, as the shaft is allowed to
turn in one direction without turning the arm, as previously explained. The
weight, or a spring which may be used instead, by a proper arrangenient of
gearing, may operate the gate many times before it runs down.
By the above Invention, the door or gate may be opened and closed by a
person on horseback or by the driver of a vehicle without alighting from the
horse or vehicle.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said John Avery in the Great Seal Patent Office on the 25th
February 1856.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, JOHN
AVERY, of 32, Essex Street, Strand, London, Patent Agent, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Twenty-fifth day of August, in the year of our Lord
One thousand eight hundred and fifty-five, in the nineteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto me,
the said John Avery, Her special licence that I, the said John Avery,
executors, administrators, and assigns, or such others as I, the said John

page_text: Avery, executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during the
term therein expressed, should and lawfully might make, use, exercise, and
vend, within the United Kingdom of Great Britain and Ireland, the Channel
Islands, and Isle of Man, an Invention for "AUTOMATIC ATTACHMENTS TO BE
APPLIED TO GATES AND DOORS," (a communication,) upon the condition (amongst
others) that I, the said John Avery, by an instrument in writing under
my hand and seal, should particularly describe and ascertain the nature of
the said Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six calendar
months next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said John Avery, do hereby declare the
nature of the said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:-
This Invention relates to a new and useful attachment to be applied to gates
and doors, whereby a gate or door may be opened or closed by merely operating
a lever at either end of the gate or door.
In the annexed Drawings, Fig. 1 is a face view of a gate with my improve-
ments applied to it; Fig. 2 is a plan or top view of the same.
A represents an ordinary farm gate, which may be hung in the usual manner;
B represents a spring catch, which may also be of the usual or any proper
form; C is a rectangular box, which is sunk a certain distance in the earth
near the gate post to which the gate is hinged.
In the upper end of this box
is a pulley D, to which a rope a is attached. The lower end of this rope is
attached to a shaft E at the lower part of the box C, near the surface of the
ground. To the said shaft is attached a crank G, and on the opposite end is
placed loosely an arm H, having a spring D on its inner side, the end of which
spring catches into notches or recesses e, see Fig. 2, in the end of the shaft,
and prevents the same from turning loosely thereon in one direction; conse-
quently the shaft E may be turned in one direction without turning the arm,
but not in the opposite direction. To the outer end of the arm H a rod I is
attached; said rod also being connected to the gate A near its back end, or
near the end that is hinged to the post. To the spring catch B is attached
a wire f, which is also connected to the upper arm of a bell crank g, in the
back stile of the gate A. The lower arm of this bell crank has a wire h
attached to it, and the lower end of the wire h is attached to an arm i of a
bent lever J, which has three arms; the arm i being the centre one, and the
two others j, k, being one above and the other below the arm i, see Fig. 1.

page_text: At each end of the gate A there are posts k, which have levers on their
upper ends, having wires m attached to them, extending down the sides of the
posts, and having their lower ends connected to bell cranks n, which are con-
nected by wires o to the arms j, k, of the lever J. At one side of the gate A
is a post L, which has a catch p to secure or hold the gate when open.
Operation. Suppose the gate to be closed, by merely depressing the end of
one of the levers 7, the spring catch B will be disengaged, and the weight F
will turn the shaft E and also the arm H, and the gate will be, thrown open
by the rod I, the spring B fastening into a catch on the post L. The gate
is closed in the same way as it is opened; the weight F, arm H, and rod I,
causing the gate to move back and forth, or open and close when released from
the catch B. When the weight F has run down it is wound up by turning the
crank G, the shaft E being allowed to turn in one direction without turning
the arm H, as previously explained. The weight, by a proper arrangement of
gearing, may operate the gate many times before it runs down. By this
Invention the gate may be opened and closed by a person on horseback or by
1
JOHN AVERY. (L.B.)