Apparatus for Opening and Closing Fanlights and Skylights.
Year: 1887

page_text: Date of Application, 16th Dec., 1887
Complete Specification Left, 15th Sept., 1888
Complete Specification Accepted, 14th Dec., 1888
PROVISIONAL SPECIFICATION.
Apparatus for Opening and Closing Fanlights and Skylights.
JAMES HILL 100d Queen Victoria Street, London, E.C. Wholesale Ironmonger
I, the said James Hill do hereby declare the nature of this invention to be as
follows:-
--
An apparatus for opening and closing Fanlights and Skylights by means of a
jointed arm which traverses a double or reverse screw rod.
The screwed rod fixes close against frame of Light and is revolved by wheel, or other
fixing, at one end over which a cord passes:
By revolving the rod one way, both ends of arm travel in opposite directions and
push light out from centre, the light being attached at centre to the jointed arm, &
by revolving rod in reverse way the Light is thereby closed or kept open at any
intermediate position.

page_text: COMPLETE SPECIFICATION.
Apparatus for Opening and Closing Fanlights and Skylights.
I, JAMES HILL Lock Merchant and Ironmonger, of 100d Queen Victoria Street
in the City of London 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 :-
66
An apparatus for opening and closing Fanlights and Skylights by means of a
jointed arm A-A which traverses a double or reverse cut screw-rod S-S i.e.-com-
prising what is known as a twin-screw " with right and left hand thread. The
screwed rod fixes close against frame of light and is revolved by a wheel W or other
fixing at one end.
Over this end wheel or other fixing a cord passes C and by pulling the latter a
revolving motion is given to the twin-screw thus causing the jointed arms to traverse
the said twin-screw.
By pulling the cord in one direction the two ends of the jointed arms are
drawn towards the middle of the twin-screw; and, the centre of the arms being
attached to the light at G the light opens inward at the top, as the jointed arms
travel along the screw. By pulling the cord in the opposite direction the two ends of
the jointed arms are then drawn to the opposite ends of the twin-screw,-thus causing the
centre attachment of the arms to draw the fanlight back to the frame, and to effectually
lock it, so that it cannot be opened from the outside of the building.
The light is securely & firmly held for ventilation at any distance desired and cannot
be moved by the wind or any other force. The only method of opening or closing
the fanlight being by the revolution of the screw. This appliance does away with
any spring catches or cleats. This invention is equally applicable to lights hung at
the top and opening outward; and it is also suitable for skylights that are hung
obliquely or horizontally.
For lights hung on centres the apparatus can be fixed either at top of light to push
in; or, at bottom of light to push out.
By another arrangement the twin screw can be fixed to light, instead of to the
frame, and travel with the light when being opened. The apparatus can also be
applied to lights hung at side similar to casements, and opening either in or out by a
special arrangement of pulleys at end of twin screw for working the cord. Side
hung lights can also be worked by either the left hand or right hand thread only of
the twin-screw, -thus doing away with the special arrangement of pulleys.
Any of the foregoing arrangements of my invention can be worked by rod at side
instead of cords.
Motion can also be given to the jointed arms by another method to cause them to
slide along the rod.

page_text: 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 :-
1. The double action, or twin screw applied to Fanlights.
2. The action of double jointed arms working on rod.
3. The end of rod worked by cord or rod action.
4. Gripping light in centre instead of side only.
5. Working the apparatus on one side of light.
6. Securely holding light in any position and locking it when closed.

page_text: This Specification was, upon the 9th day of December 1891, Amended under
Sections 18 to 21 of the Patents, Designs, and Trade Marks Act, 1883.
JAMES HILL 100 Queen Victoria Street, London, E.C. Wholesale Ironmonger
I, the said James Hill do hereby declare the nature of this invention to be as
follows:-
An apparatus for opening and closing Fanlights and Skylights by means of a
jointed arm which traverses a double or reverse screw rod.
The screwed rod fixes close against frame of Light and is revolved by wheel, or other
fixing, at one end over which a cord passes.
By revolving the rod one way, hoth ends of arm travel in opposite directions and
push light out from centre, the light being attached at centre to the jointed arm, &
by revolving rod in reverse way the Light is thereby closed or kept open at any
intermediate position.
1007

page_text: COMPLETE SPECIFICATION (AMENDED).
Apparatus for Opening and Closing Fanlights and Skylights.
1, JAMES HILL Lock Merchant and Ironmonger, of 100d Queen Victoria Street
in the City of London 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 :—
An apparatus for opening and closing Fanlights and Skylights by means of a
jointed arm A-A which traverses a double or reverse cut screw-rod S-S i.e.- -com-
prising what is known as a "twin-screw" with right and left hand thread. The
screwed rod fixes close against frame of light and is revolved by a wheel W or other
fixing at one end.
Over this end wheel or other fixing a cord passes C and by pulling the latter a
revolving motion is given to the twin-screw thus causing the jointed arms to traverse
the said twin-screw.
By pulling the cord in one direction the two ends of the jointed arms are
drawn towards the middle of the twin-screw; and, the centre of the arms being
attached to the light at G the light opens inward at the top, as the jointed arms
travel along the screw. By pulling the cord in the opposite direction the two ends of
the jointed arms are then drawn to the opposite ends of the twin-screw, thus causing the
centre attachment of the arms to draw the fanlight back to the frame, and to effectually
lock it, so that it cannot be opened from the outside of the building.
The light is securely & firmly held for ventilation at any distance desired and cannot
be moved by the wind or any other force. The only method of opening or closing
the fanlight being by the revolution of the screw. This appliance does away with
any spring catches or cleats. This invention is equally applicable to lights hung at
the top and opening outward; and it is also suitable for skylights that are hung
obliquely or horizontally.
For lights hung on centres the apparatus can be fixed either at top of light to push
in; or, at bottom of light to push out.
By another arrangement the twin screw can be fixed to light, instead of to the
frame, and travel with the light when being opened. The apparatus can also be
applied to lights hung at side similar to casements, and opening either in or out by a
special arrangement of pulleys at end of twin screw for working the cord. Side
hung lights can also be worked by either the left hand or right hand thread only of
the twin-screw,--thus doing away with the special arrangement of pulleys.
Any of the foregoing arrangements of my invention can be worked by rod at side
instead of cords.
Motion can also be given to the jointed arms by another method to cause them to
slide along the rod.

page_text: 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
1. The double action, or twin screw applied to Fanlights, by the action of double
jointed arms working on rod substantially as described herein and shewn in the
accompanying drawing.
2. The action of double jointed arms working on rod.
3. The end of rod worked by cord or rod nction.
4. Gripping light in centre instead of side only.
5. Working the apparatus on one side of light.
6. Securely holding light in any position and locking it when closed.
2. In an apparatus of the kind described in the first claim, working the end of the rod
either by cord or rod action substantially as described herein.