IMPROVEMENTS IN APPARATUS FOR REGULATING SKYLIGHTS
Year: 1886

page_text: I, WILLIAM LEGGOTT, of 70 Park Road, Bradford in the County of York, Brass
Founder, do hereby declare the nature of my invention for IMPROVEMENTS IN
APPARATUS FOR REGULATING SKYLIGHTS to be as follows:-
This invention relates to certain improvements in apparatus for regulating
skylights, and has for its object the arrangement of the apparatus in such a
manner, that the skylight can be operated from the floor without having occasion
to obtain a step ladder or other apparatus for elevating the attendant, and by so
combining the parts, that in whatever position the skylight may be the same is
locked until again operated by the attendant.
I accomplish my object in the following manner; I secure to the skylight sash,
a bracket, to which is hinged a toothed bar that passes through a recess formed in
another bracket that may be secured to the immediate framework. To the last
named bracket I mount a grooved pulley in which is placed an endless cord of the
desired length and I also secure to the said pulley, a worm, which is connected by
toothed gear to the before mentioned bar, so that by operating the cord the worm
and toothed gear are actuated, thereby raising or lowering the toothed bar and
skylight frame, which, by being connected to the worm, is locked firm in any
position to which it may be raised.
Improvements in Apparatus for Regulating Skylights.
I, WILLIAM LEGGOTT, of 70 Park Road, Bradford, in the County of York, Brass
5 Founder 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 relates to certain improvements in apparatus for regulating
skylights, and has for its object the arrangement of the apparatus in such a

page_text: manner, that the skylight can be easily and effectually operated from the floor
without having occasion to obtain a step ladder or other means for elevating the
attendant; and by so combining the parts, that in whatever position the skylight
may be, the same is locked until again operated by the attendant; and consists in
hinging to the skylight frame a toothed bar that passes through a slot in a bracket
which may be secured to the skylight outer frame, and in the said bracket are
mounted pinions gearing with the toothed bar and a worm, to which is attached a
grooved pulley and endless cord of the desired length for operating the worm, and
thereby elevating or lowering the skylight, which is locked or secured by the worm
in every position to which it is raised, so that it cannot be operated from the
outside.
The accompanying drawing represents a side elevation of my improved sky-
light regulator, with a portion of one of the brackets cut away to shew the manner
in which the motion is communicated.
The skylight frame is indicated by the letter A, and secured thereto is the
bracket B, to which is hinged by pin C the curved toothed bar D, which passes
through and guided by a slot formed in the bracket E secured to the outer frame F
of the skylight. In the before mentioned slot, I mount a small anti-friction
pulley G, for supporting and keeping the curved bar in gear with the pinion H,
with which gears another pinion H, both mounted on pins and enclosed within
the before named slot in bracket E; the teeth of the pinions and curved bar being
formed at an angle suitable to that of the worm hereinafter described.
On the bracket E is formed a lug, to which is secured a stud for supporting the
worm J, on the barrel of which is secured a grooved pulley K, on which is placed
the endless cord L, kept in the groove by the guard M, secured on the end of the
before-named stud.
On operating the endless cord L, the worm and pinions rotate and actuate the
curved toothed bar D, thereby raising or lowering the skylight frame A as required,
which is locked or secured in every position, and cannot be moved except by the
actuation of the grooved pulley K and worm J.
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:
The apparatus for regulating and securing skylights in the position to which
they are raised, in which are combined a curved tooth bar with pinions and worm
substantially in the manner shewn and described.
Dated this 20th day of October 1886.