Improvements in Means for Opening and Closing or Manipulating Ventilators, Sashes, Doors, Shutters, or the like in Places not Readily Accessible.
Year: 1896

page_text: Date of Application, 27th Apr., 1896
Complete Specification Left, 13th Jan., 1897-Accepted, 27th Apr., 1897
PROVISIONAL SPE
Improvements in Means for Opening and Closing or Manipulating
Ventilators, Sashes, Doors, Shutters, or the like in Places not
Readily Accessible.
1, JAMES GREENHALGH WALKER, of Oriel Chambers, Doncaster, in the County
of York, Civil Engineer, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object to provide means whereby ventilatora, sashes,
doors, shutters, or the like, situated so as to be not readily accessible, can be opened;
closed, or manipulated, from some readily accessible place without the use of the
roda, levers, ratchet wheels, and such like gear, hitherto employed for the purpose.
According to my invention I convey the power, or movement, necessary for
manipulating the ventilator, or other device, by means of a fluid (liquid, or gascous)
conveyed by a pipe, or pipes, or the equivalent, from any convenient place. The
fluid acts upon a piston, plunger, or the like, moving in a cylinder, or its equivalont,
and connected with the veutilator, or other device, to be operated. The fluid
pressure may be obtained from any suitable source; such as, for example, from a
storage of fluid under pressure or a main water supply controlled by a tap, or by
taps, for supply and exhaust; or a pump may be used to give the requisite
pressure.
Dated this 27th day of April 1896.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents,
COMPLETE SPECIFICATION.
Improvements in Means for Opening and Closing or Manipulating
Ventilators, Sashes, Doors, Shutters, or the like in Places not
Readily Accessible.
I, JAMES GREENHALGH WALKER, of Oriel Chambers, Doncaster, in the County
of York, Civil Engineer, 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 has for its object to provide means whereby ventilators, sashes,
doors, shutters, or the like, situated so as to be not readily accessiblo, can be opened
closed, or manipulated, from some readily accessiblo place, without the use of the
rods, levers, ratchet wheels, and such like gear, extending from the place of
operation to the ventilator, or other device, to be actuated, hitherto employed for
the purpose.
According to my invention I convey the power, or movement, necessary for
manipulating the ventilator, or other device, by means of a fluid, (liquid or gaseous),

page_text: conveyed by a pipe, or pipes, or the equivalent, from any convenient place. The
fluid acts upon a piston, plunger, or the like, moving in a oylinder, or its equivalent,
and connected with the ventilator, or other device, to be operated.
The fluid pressure may be obtained from any suitable source; such as, for
example, from a storage of fluid under pressure, or a main water supply controlled
by a tap, or by taps, for supply and exhaust; or a pump may be used to give the
requisite pressure.
In the accompanying drawings I have illustrated the application of my invention
to the operation of sashes at the upper part of a room from a convenient position
near the floor, from which its general application to the operation of ventilators,
doors, shutters, or the like, will also be readily understood; the operating devices
being simply modified to adapt them to the particular purpose and situation to
which they are to be applied.
Figure 1 is a cross section, and Figure 2 is an elevation showing the arrangement
at the upper part of the room, and Figure 3 shews a sectional perspective view of
the whole arrangement.
At the lower part of the room is an air pump a, connected by the pipe b, with a
cylinder c, containing a piston which, when air is pumped into the cylinder, raises
the piston, which is connected by the link d, to a lever d, fastened to a roil d,
mounted to turn in bearings in brackets d', and having secured to it levers s³,
connected by links, with the sashes and so opens the sashes. By opening a
cock on the pipe b, the air will escape, and the sashes will close, they, if necessary,
being weighted to insure this. If desired the normal position of the sashes, or
the like, can be the open position; they being closed by acting on the piston
by the pressure. Although I have mentioned air any other fluid under pressure
may be used. The cylinder and piston may be of any suitable construction for
example they may be arranged after the manner described in the Specification of
my Application for Letters Patent No. 8851 of even date herewith.
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 :-
The combination with ventilators, sashes, doors, shutters, or the like, of a piston
and cylinder, or the equivalent, and means for applying fluid pressure thereto;
substantially as, and for the purposes, hereinbefore explained.
Dated this 13th day of January 1897.
JOHNSONS & WILLCOX,
47 Lincoln's Inn Fields, London, W.C., Agents.