Ventilators, and such like Articles.
Year: 1884

page_text: Ventilators, and such like Articles.
We, EDWIN VERITY, and JOSHUA MARLAND VERITY, of Call Lane, Leeds, Iron-
mongers, and BENJAMIN BANKS, of Meadow Lane, Leeds, Brass Worker, all in the
County of York, do hereby declare the nature of our said Invention for "AN
IMPROVED MECHANICAL MOVEMENT OR MEANS, FOR OPENING, CLOSING, STAYING,
AND SECURING, WINDOWS, SKYLIGHTS, DAMPERS, VENTILATORS, AND SUCH-LIKE
ARTICLES, to be as follows :—
Upon the frame or other stationary and firm or rigid part of whatever our
Invention may be applied to, we fix a projecting, double, Bracket, with a drilled
hole in each side or "arm," for receiving a short, turned, shaft or pin; and upon
this we first fit a "chain-wheel," or a gut or cord pulley, as circumstances may
require; and upon the side of this we construct a "short throw" eccentric block,
turned, to fit accurately into a toothed wheel of about 16 teeth; and, alongside
this, also drilled, to fit the shaft or pin,-we construct an internal toothed wheel
of, say 18 teeth, and fully the entire depth of the teeth larger, in diameter,-inside
the teeth, than the first named, eccentrically carried, wheel; and so that the plate
part or side of it, inside the teeth, shall lie against the eccentric and its wheel,
when the two sets of wheel teeth agree with or "face" each other.
Upon the side, by preference,-of this latter described wheel, we construct teeth
for a lifting rack or chain, or other equivalent means, for coupling its movement
and power to the window, skylight or other article it is required to actuate and
control.
The first described, eccentrically carried, toothed wheel, is prevented from turning,
-with its eccentric and chain wheel or pulley,-by means of an arm or tail, firmly
attached to it, radially, and reaching to, and fitting loosely into, a recess in the main
or fixing plate of the before-described double Bracket; and thus, the "internal
toothed," or "power" wheel will revolve so much slower than the chain or gut
wheel, as the difference in the numbers of the two sets of teeth, will divide into
that of the larger, or internal toothed wheel.
The short shaft or pin which carries all the moving parts or details, may be
rivetted, or otherwise fixed in and to the Bracket, and thus the whole will be
contained within the Bracket arms.
"
1007

page_text: Ventilators, and such like Articles.
We EDWIN VERITY, and JOSHUA MARLAND VERITY, of Call Lane, Leeds, Iron-
mongers, and BENJAMIN BANKS, of Meadow Lane, Leeds, Brass Worker, all in the
County of York, do hereby declare the nature of our said Invention for " AN
IMPROVED MECHANICAL MOVEMENT OR MEANS, FOR OPENING, CLOSING, STAYING
AND SECURING, WINDOWS, SKYLIGHTS, DAMPERS, VENTILATORS, AND SUCH LIKE
ARTICLES," and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
Upon the frame or other stationary and firm or rigid part of whatever our
invention may be applied to, we fix a projecting, double bracket, with a drilled
hole in each side or "arm" for receiving a short, turned, shaft or pin; and upon.
this we first fit a "chain-wheel," or a gut or cord pulley, as circumstances may -
require; and upon the side of this, we construct a "short throw" eccentric block,.
turned, to fit accurately into a toothed wheel of about 16 teeth (more or less);
and, alongside this, also drilled, to fit the shaft or pin, we construct an internal
toothed wheel of, say 18 teeth (more or less) and fully the entire depth of the teeth
and larger, in diameter,-inside the teeth,-than the first named, eccentrically carried,
wheel; and so that the plate part or side thereof, inside the teeth, shall lie against
the eccentric and its wheel, when the two sets of wheel teeth agree with or "face".
each other.
Upon the side, by preference, of this latter described wheel, we construct teeth
for a lifting rack or chain, or other equivalent means, for coupling its movement.
and power to the window, skylight or other article it is required to actuate and
control.
The first described, eccentrically carried, toothed wheel, is prevented from
rotating, with its eccentric and chain wheel or pulley, by means of an arm or tail,
firmly attached thereto, radially and reaching to, and fitting loosely into, a recess
in the main or fixing plate of the before described double bracket, and thus, the
"internal toothed" or "power" wheel will revolve so much slower than the chain
or gut wheel, as the difference in the numbers of the two sets of teeth, will divide
into that of the larger, or internal toothed wheel.
The short shaft or pin which carries all the moving parts or details, may be
rivetted, or otherwise fixed in and to the bracket, and thus the whole will be
contained within the bracket arms.
-
From the foregoing description it will be understood that this arrangement
forms what is known as epicycloidal gear.
And in order that our said invention may be particularly described and
ascertained, reference is hereby made to the accompanying drawings, in which
similar letters of reference indicate corresponding parts.
I

page_text: Fig. 1 is a perspective view shewing one of the methods of applying our
invention to such a purpose as the opening and closing of fanlights.
Fig. 2 shews the application of our invention to a window holder.
Figs. 3 to 7 are detail views.
a is a rack which may be attached. to a fanlight or other article by the provision b.
cc are two sides of a bracket to which the pin d is fitted; e is the epicycloidal
block consisting of an internally geared wheel e and pinion e¹. The rack a gears
with the external pinion f which is firmly attached to or forms part of the outor
case of the internally toothed wheel e, and as the toothed wheel e slowly revolves
the rack is simultaneously and powerfully moved in either direction to open or
close the fanlight. h is a cord pulley, an elevation of which is shewn in Fig. 5.
An eccentric block i is attached to this pulley. d is the central pin which sustains
the gear and upon which the several wheels work.
When the pulley h is rotated on the pin d the eccentric block i causes the
pinion e' to gear into or with the internal teeth of e in succession, as shewn in
Fig. 7. The pinion e¹ is fitted to or forms part of a plate m which has a projection
or lug . This lug works in a slot in any convenient position, whereby it is
prevented from rotating, in the manner well understood with respect to epicycloidal
gear.
It is obvious that the rotation of the pulley h causes the eccentric i to impart
to the pinion e' an eccentric motion, and that the relative speeds of the pulley h
and pinion f will depend on the relative sizes and number of teeth of the pinion e¹
and wheel e. The pinion f is caused to operate upon and actuate a rack a, as
shewn in Fig. 1 or a vertical rack, as shewn in Fig. 2, or to effect any other
analogous operation.
Instead of the pulley wheel shewn in Figs. 1, 3, 4 and 5, a handle may be fitted
as shewn in Fig. 2, whereby the eccentric i is caused to rotate on the pin d, or in
a sleeve or other mechanical equivalent for operating the epicycloidal gear.
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
1. The application and use of epicycloidal gear to the purposes of opening,
closing, staying, and securing windows, skylights, dampers, ventilators, and
analogous articles, constructed and operating substantially as herein before described
and shewn on the drawings.
2. The general combination and arrangement of the several and respective parts
together forming our improved mechanical movement or means of opening, closing,
staying and securing windows, skylights, dampers, ventilators, and such like articles
substantially as herein before described and shewn on the drawings.
GEO. DOWNING,
Agent for Applicants.