Improved Opening Gear for Greenhouse Ventilators and such like.
Year: 1895

page_text: Date of Application, 25th Feb., 1895-Accepted, 4th May, 1895
COMPLETE SPECIFICATION.
Improved Opening Gear for Greenhouse Ventilators and such like.
JOSIAH QUERTIER St. Aubins Burnaby Road Alum Chine Bournemouth West
Hants Grape and Tomato Grower 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 :-
My-invention relates to an improved method of opening the top & side lights or
ventilators of greenhouses, conservatories, frame lights & such like, by which
means a row of lights or ventilators however long are opened simultaneously by
one movement of a long lever or screw gear fixed at one end of the house, either
inside or outside, the lights opening parallel the whole length of house, which
advantage is not obtained by the ordinary elbow lever & shaft with rotary
movement the shaft twisting by the weight of the ventilators as the distance from
the working lever increases.
The chief feature in my opening gear being the elbow levers with improved arms.
screwed to purlins, rafters or sash bars longitudinally with the house & joined to
each other by a connecting rod, and the whole gear working on centres reduces.
friction to a minimum.
In carrying out my inventien I make an improved elbow lever with the arm
(instead of being straight as commonly used) L shaped or other suitable angle with
a hole at the angle or corner through which I fix a loose joint, bolt or screw to
fasten the lever to the purlin or should there be no purlin used to the side or
underpart of rafter or sash bar.
".
The elbow end joint is screwed to the underpart of the ventilator, and at the arm
end a suitable joint is made to which is fastened a rod made of wood, bar-iron, or
gas-tubing, preferably gas-tubing, this rod is attached to the several levers running
the length of the house which rod I term the connecting rod. At one end of the
house preferably to the door post I fix an L or other suitable angle shaped lever
which is attached to the connecting rod or to the first elbow lever arm by means
of a union rod and the other end of lever to another rod which is attached to a
long working lever bolted near to the bottom of door post.
The ventilators are kept open by the long working lever being drawn down &
hooked either to long nails, bolts, or screws partly driven home, at suitable
distances apart to regulate opening, into a vertical post or stud; or if preferred a
screw gear or pulley let into door post with a chain running over and connected to.
long working lever may be used instead of the first mentioned.
For single lights or ventilators the arm of lever would be made straight or
nearly so & at the arm end a cord or rod is fastened to pull the ventilator open.
In order that my invention may be more fully understood I will now proceed to.
describe the accompanying sheet of drawings in which the like letters of reference
indicate the like parts throughout.
Fig. 1. shews a section of my improved opening gear for-ventilators & such like,
the elbow levers with L shaped arms are screwed to the purlins longitudinally with
the house & fastened to the connecting rod, union rod _ lever on door post &
to the long working lever by another rod in accordance with my invention.
A. A. represent the elbow levers & L shaped arms either screwed to purlins on
a loose joint or bolted to purlins B. B. as before described.
C. C. represent the elbow end joints screwed to ventilators D. D.
E. E. represent the arm end joints with clips & bolts or socket & set screw-

page_text: through which the connecting rod F. is passed & fastened or rivets are passed
through the rod when forked arm ends would be used.
G. G. represent the rafters. H. the union rod I, the lever arm fastened on
door post. J the rod connected to the long working lever K. M. represents the
door post.
Fig. 2. shews a section of the ventilators & opening gear when ventilators are
opened.
Fig. 3. shews a section of the elbow lever & L shaped arm with loose joint N
at the angle to screw to side or underpart of rafter or sash bar as before described.
Fig. 4. shews a section of a single light with elbow lever & straight or bent arm
with opening rod attached to the end as before described in the Specification.
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 Ị
claim is :-
:-
1. Improved opening gear for greenhouses, conservatories, frame lights & such
like, all as herein described in the Specification & illustrated by the accompanying
drawings.
2. Improved opening gear for greenhouses, conservatories, frame lights & such
like, the use of elbow levers with L or other suitable angle shaped arms, screwed
or bolted to purlins, rafters or sash bars longitudinally with the house & attached
to a connecting rod substantially as before stated in the Specification & illustrated
by the accompanying sheet of drawings.
3. The combination of elbow lever with arm & rod attached for single light
openers & for long houses where two or more elbow levers are used, the elbow
levers with shaped arms, connecting rod, union rod, ✓ or other angle shaped
lever; with rod connected to long working lever fixed to door post substantially as
before stated and illustrated by the accompanying sheet of drawings.
Dated this 22nd day of February 1895.
JOSIAH QUERTIER.