IMPROVEMENTS IN FANLIGHT FASTENERS
Year: 1886

page_text: I, JOHN URIAH DAVIS of 1 Mordaunt Street Brixton in the county of Surrey
Clerk of Works do hereby declare the nature of my invention for IMPROVEMENTS
IN FANLIGHT FASTENERS and in what manner the same is to be performed to be
particularly described and ascertained in and by the following statement:—
The object of my invention is to provide a central latch fastening for Fanlights,
or casement frames. In order that the same may be easily fixed at any angle
without the use of side bars I fix two converging guide-bars or rods preferably
made in brass and notched and fitted as shewn in the drawings annexed These
guide bars from being fixed in the top rail of the sash frame by a loose screw and
travelling by a slot suitably cut in them (through which slot a screw or pin with a
large head and fixed upon the upper stile of the sash is fitted) fold in a recess made
for them in the aforesaid top rail of the sash frame folding one over the other and
meeting in the centre. The guide-bars are loosely slung by a round-headed screw
fixed in an iron plate on the top of the sash frame; the inner circle of the hole
made in the iron plate being hollowed out in an oval shape to prevent friction and
to allow the bars to fall at any angle when the fanlight is opened. The sash or
fanlight is fastened by a central latch or lifting catch which will lift up on pressure
of the ring or counterweight shewn in the drawings The latch is preferably
actuated by means of a long-arm but a line or lever may also be used At the
various intervals according to the notches of the guide bars the fanlight remains
open the said notches in the separate bars forming a square recess into which the
catch slips. A rounded recess may be used and with or without a circular or semi-
circular bolt. The latch preferably used is a simple lever catch of the kind sbewn
in section in the drawings annexed but other forms of latch may be used if
desired.
In order that my invention may be better understood I append drawings in
which Fig. 1 shews the details of the screw for fixing the rods or guide bars A
being half elevation. B full elevation and C plan. Fig. 2 shews pin or screw on
top rail of sash with catch for fastening same A is side view and B plan shewing
plate for fixing, and counterweight for actuating latch. Fig. 3 shews latch in
section as locked when the fanlight is closed A is the ring or counterweight
B section of guide bars or rods C the latch D is top rail of sash frame.
top rail of sash Fig. 4 shews guide bars or rods in position when sash is open
E is

page_text: .
A A the aforesaid guide rods B screw or pin for guiding by means of slots
CC the guide rods or bars. D D shews the notches or serrations of the guide
bars A. E is top rail of sash or fanlight and F the central catch for fastening same
when closed. Fig 5 gives general view of the appliance as fitted.
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 -
1. A fanlight fastener acting with crossed slotted guide bars, central latch and
rack movement as described and illustrated substantially as set forth.
LULMAN & Co.,
Agents for Applicant.