Improvements in Apparatus for Regulating Fanlights and Skylights.
Year: 1894

page_text: PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Regulating Fanlights and
Skylights.
1, WILLIAM CONNELL, Joiner, of 93 Hope Street in the City of Glasgow do
hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in apparatus for regulating fanlights and
skylights, and has for its object the simplifying of such apparatus as has heretofore
been employed for the aforementioned purpose. This has generally consisted of a
metal rod, with one side formed as a rack, passing through a bracket containing
some form of gearing for working in the said rack.
My improvements cousist, firstly, in the employment of a pinion with only two
teeth placed on opposite sides of the axis of the pinion, the said teeth being shaped
like rods, and forming the connection between the two sides or journals of the
pinion. The pinion is carried in a bracket through which passes at rack, the
spaces between the teeth of the said rack being made to fit well, but not too
closely, on to the rods forming the two teeth of the pinion afore mentioned.
Attached to the bracket, I furthermore employ a suitable guide which rests on the
teeth of the rack so that the axis of the pinion is held in such a position in relation
to the rack that the pinion is free to turn on its axis when force is applied to the
journals to make it rotate. But when the pinion is brought to rest with both teeth
engaging the rack, the pinion and rack are locked fast together in any given
position. The pinion may be operated in any ordinary manner, as for instance,
by a wheel attached directly thereto, or forming part of the pinion. The said
wheel may be grooved for a cord, or toothed for a chain, so as to be readily operated
from below,
Dated this 27th day of dusil 1001
WILLIAM CONNELL.
Improvements in Apparatus for Regulating Fanlights and
Skylights.
1, WILLIAM CONNELL, Joiner, of 93 Hope Street in the City of Glasgow do
hereby declare the nature of this invention and in what manner the same is to
he performed, to be particularly described and ascertained in and by the following
statement :-
This invention relates to improvements in apparatus for regulating fanlights and
skylights, and has for its object the simplifying of such apparatus as has heretofore
been employed for the aforementioned purpose. This has generally consisted of a
metal rod with one side formed as a rack passing through a bracket containing or
Eupporting some form of gearing for working in or along the said rack.
My improvements consist, firstly, in the employment of a pinion with only two
teeth placed on opposite sides of the axis of the pinion, the said teeth being shaped
like rods, and forming the connection between the two sides or journals of the
pinion. The pinion is carried in a bracket through which passes a rack, the spaces
Price Rd7

page_text: between the teeth of the said rack being made to fit well, but not too closely, on
to the rods forming the two teeth of the pinion afore mentioned. Attached to the
bracket, I furthermore employ a suitable guide which rests on the teeth of the
rack so that the axis of the pinion is held in such a position in relation to the rack
that the pinion is free to turn on its axis when force is applied to make it rotate.
But when the pinion is brought to rest with both teeth engaging the rack, the
pinion and rack are locked fast together in any given position. The pinion may
be operated in any ordinary manner, as for instance by a wheel attached directly
thereto or forming part of the pinion. The said wheel may be grooved for a cord
or toothed for a chain, so as to be readily operated from below.
To enable my invention to be fully understood I will now describe it with
reference to the accompanying drawing:
The drawing shows an apparatus constructed in accordance with the said invention,
arranged for opening and closing fanlights or lantern lights. a is an ordinary rack,
with somewhat deep teeth, hinged to a bracket fixed to the framework of the
window or door. b is a bracket fixed to the window or light, one of the cheeks of
the said bracket being shown broken to enable the peculiarly formed pinion c to be
seen in section. The small guide pulley d and the guard e, both attached to or
supported by the bracket keep the rack in such a position in relation to the
pinion that the said pinion is free to move along the rack when turned on its
axis. The pinion may be operated by a wheel and cord, as shown on the
drawing.
Though the foregoing description and accompanying drawing describe my
invention with relation to fan or lantern lights, it is to be understood that my
invention is also applicable to apparatus for opening and closing skylights or
ventilators opening upwards.
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:
In an apparatus for regulating fanlights and skylights, the employment of a
pinion with only two teeth arranged to work in a rack, the pinion and rack being so
supported and guided that the pinion is free to travel along the rack when rotated
on its axis, but locks fast with the rack when brought to rest with both teeth
engaging the rack as herein before described and illustrated in the accompanying
drawing.
Dated this 25th day of January 1895.