IMPROVED MEANS OF OPENING, CLOSING, AND STAYING IN ANY REQUIRED POSITION, WINDOWS, SKY-LIGHTS, DAMPERS, VENTILATORS, AND SUCH LIKE THINGS
Year: 1884

page_text: PROVISIONAL SPECIFICATION.
r
AN
We, EDWIN VERITY and JOSHUA MARLAND VERITY, of Call Lane, Leeds,
Ironmongers, and BENJAMIN BANKS, of Freehold Street, Leeds, Joiner, all in the
County of York, do hereby declare the nature of our Invention for
IMPROVED MEANS OF OPENING, CLOSING, AND STAYING IN ANY REQUIRED
POSITION, WINDOWS, SKY-LIGHTS, DAMPERS, VENTILATORS, AND SUCH LIKE
THINGS," to be as follows:-
Upon the outer or stationary frame or case of the window or other article, we
fix a compound bracket or other equivalent support, so constructed as to receive
a short cross shaft or spindle to work freely in at least a pair of drilled smooth
holes; and upon this shaft we fix a "two leaved pinion "-that is, a pinion with
only two diametrically opposite teeth, studs, or points, and these by preference,
we construct to project, longitudinally of the shaft, from the face or side of a
circular disc or cheek upon the end of the shaft.
We then provide a curved arın with suitable notches or studs to work or
"take" into the said two leaved pinion, and we fix this upon the hinged or
pivotted part of the window or other article, and, for lightness and strength, we
prefer to construct this as a plain bar, with the notches or studs as projections on
one side of it, the plain side being guided and supported by a suitable groove or
part in the fixed bracket.
We next construct and fix,-also upon the said shaft or spindle,-a "chain-
wheel" or a "milled" or roughened cord-wheel or pulley in which works an
endless chain or cord for actuating the whole, and moving and fixing the casement,
damper, or other article.
It will be evident that, by means of the chain or cord, the two leaved pinion
will not only move and adjust the arm and whatever it may be attached to, in any
required position, but will also retain them safely in that position, whenever the
teeth, studs, or "leaves" of the pinion stand "across the line of centres," or, in a
position agreeing with what may be called the "pitch line" of the teeth or studs
upon the bar; and, taking advantage of this, we arrange the before-described parts

page_text: or details so that they shall be in this position when the window or other article
to which our Invention is applied is closed, thus rendering it secure without an
extra or separate fastener.
In some cases we substitute plain teeth and notches upon the edge of the
moving bar, in lieu of the studs upon its side; and, the "two leaved pinion" may
then be constructed as two longitudinal bars with an opening between them, in
the short revolving shaft, between the two bearings in which it works; and also,
in certain cases, we reverse the method of fixing and the action, but in all cases
the general construction and main features of our Invention, are unchanged.
Dated this 1st day of January 1884.
EDWIN VERITY.
JOSHUA MARLAND VERITY.
BENJAMIN BANKS.

page_text: We, EDWIN VERITY, and JOSHUA MARLAND VERITY, of Call Lane, Leeds,
Ironmongers, and BENJAMIN BANKS, of Freehold Street Leeds, Joiner, all in the
County of York, do hereby declare the nature of our said Invention for "AN
IMPROVED MEANS OF OPENING, CLOSING, AND STAYING IN ANY REQUIRED
POSITION, WINDOWS, SKY-LIGHTS, DAMPERS, VENTILATORS, AND SUCH LIKE
THINGS," and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Upon the outer or stationary frame or case of the window or other article, we
fix a compound bracket, or other equivalent support, so constructed as to receive
a short cross shaft or spindle, to work freely in at least, a pair of drilled, smooth,
holes, and upon this shaft we fix or construct, a "two-leaved pinion,"-that is,—a
pinion with only two (diametrically opposite) teeth, studs, or points, and these, by
preference, we construct to project, longitudinally of the shaft, from the face or
side of a circular disc or check, upon one end of the shaft.
"
"
We then provide a curved arm, with suitable notches or studs, to work or
take" into the said two-leaved pinion," and we fix this upon the hinged or
pivotted part of the window or other article; and, for lightness and strength, we
prefer to construct this as a plain bar, with the notches or studs as projections on
one side of it; the plain side being guided and supported by a suitable groove or
part in the fixed. bracket.
"³
We next construct and fix,-upon the said shaft or spindle,-a "chain wheel,"
or a " milled or roughened cord-wheel or pulley, in which works an endless
chain or cord, for actuating the whole, and moving and fixing the casement,
damper, or other article.
It will be evident that by means of the chain or cord, the "two-leaved pinion
will. not only move and adjust the arm and whatever that may be attached to, in
any required position, but will also retain them safely in that position, whenever
the teeth, studs, or "leaves" of the pinion stand "across the line of centres," or in
a position agreeing with what may be called the "pitch line" of the teeth or studs
upon the bar; and, taking advantage of this feature, we arrange the before-
described parts or details so that they shall be in this position when the window
or other article, to which our Invention is applied, is closed, thus rendering it
secure without an extra or separate fastener.
In some cases we substitute plain teeth and notches upon the edge of the
moving bar, in lieu of the studs upon its side; and, the "two leaved pinion " may
then be constructed as two short, round, longitudinal bars, with an opening
between them, in, and as a part of the short revolving shaft, and between the two
bearings in which it works; and also, in certain cases, we reverse the method of
fixing, and the action, but in all cases, the general construction and main features
of our Invention are unchanged.
In the accompanying illustrations Figure 1 is a face view of the first arrange-
ment of our Invention described herein, and Figure 2 is a side view of the
modified arrangement, with the teeth or notches on the edge of the curved arm or
bar; Figure 3 shows the "two-leaved pinion" and wheel or pulley for the former,
Figure 4 the same for the latter, and Figure 5 the face of the two-leaved pinion;
and in these, a is the bracket, b the spindle, pinion, and wheel or pulley combined,
and c the curved arm, with notches, studs, or teeth, suited to each arrangement
described,

page_text: Having now particularly described and ascertained the nature of our said
Invention, and in what manner the same is to be performed, we declare that what
we claim is:-
The application and use of what is technically known as the "two-leaved
pinion," with notched or toothed curved arm or bar, and chain or cord wheel
or pulley, combined, virtually as or after the manner, and for the purposes herein-
before described and set forth.