Improvements in Ventilation to Prevent Condensation of Moisture on Shop Windows.
Year: 1891

page_text: Date of Application, 30th Apr., 1891
Complete Specification Left, 10th Aug., 1891-Accepted, 26th Sept., 1891
PROVISIONAL SPECIFICATION.
Improvements in Ventilation to Prevent Condensation of Moisture
on Shop Windows.
GEORGE CHARLES INKPEN Architect Havelock Villas Victoria Road N.
Southsea Hants, do hereby declare the nature of this invention to be as follows:-
An arrangement of ventilating gratings, tubes or trunks, bringing in a current of
cold air from the exterior of the premises beneath the level of a shop window
distributing the air thus brought in by means of intercepting partitions, filterers, &c.
over the surface of the glass comprising the shop window, & withdrawing it by
means of a trunk or tubes over and above the level of the shop windows, & in con-
junction with extracting cowls passing the vitiated air from the interior to the
exterior of the premises thus causing a constant current of air to be diffused in
the vicinity of the surface of the glass, & thus preventing condensation of the
atmosphere on its surface.
Dth of Amil 1801
COMPLETE SPECIFICATION.
Improvements in Ventilation to Prevent Condensation of Moisture
on Shop Windows.
GEORGE CHARLES INKPEN 1 Havelock Villas Victoria Road North Southsea
Hants Architect & Surveyor 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 a system of ventilation devised to prevent the con-
densation of moisture on the inner surface of shop, or other windows by introducing
a constant current of air below the level of a window, diffusing it in the vicinity of
the glass, & extracting it in a similar manner at a point, or points above the level
of the window thereby keeping the atmosphere on the inner side of the glass about
equal temperature to that of the atmosphere externally.
The air may be introduced in any convenient manner by means of gratings,
trunks, or tubes, the quantity of air admitted being regulated at will by a hinged,
or pivotted flap, or equivalent means so arranged that the inlet, or outlet may be
closed altogether if & when desired, & by being connected with any simple
indicator the position of the valve within the trunk, or tube may be easily
ascertained.
The air before coming in contact with the inner surface of the glass is diffused
by intercepting partitions, & also filtered by cotton wool, on either of perforated
metal trays, or wire gauze or by other means, so as to prevent the ingress of damp
air, & dust or other foreign matter from passing there through.
The air thus brought in is directed upwards, diffused over the surface of the
glass over which it passes, & is withdrawn above the window by means of
extracting cowls fixed outside & open to the external atmosphere so as to induce
an upward current, in conjunction with which are employed tubes, trunks or
equivalent devices. The air before being withdrawn by the cowls may be caused
to pass through a filterer similar to that described for the inlet & used for a
corresponding purpose.

page_text: & so disposed as to cause the inflowing air to impinge upon & be diffused over the
inner surface of the glass in combination with an extracting or outlet ventilator
substantially as, & for the purpose herein described, & shewn in the accompanying
drawings.
2nd. In combination with the inlet, & outlet ventilators herein described the
employment of a pivotted regulating valve as set forth.
Dated this 8th day of August 1891.
GEORGE CHARLES INKPEN.