Improved Means for Regulating the Raising and Lowering of Window Sashes.
Year: 1895

page_text: Date of Application, 5th Mar., 1895-Accepted, 13th Apr., 1895
COMPLETE SPECIFICATION.
Improved Means for Regulating the Raising and Lowering of
Window Sashes.
I, SAMUEL BARTLETT, of 16, Philip Street, Bath, Joinor, 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 consists in improved means for regulating and controlling the
vertical movement of window sashes.
According to this invention provision is made for ventilation combined with a
safe-guard against the entrance of unauthorised persons, through the windows, into
houses.
The means for controlling and regulating the travel of window sashes in which
this invention consists comprise a plate of brass, or other suitable metal or material,
designed to be screwed or otherwise secured to the inner face of the sash atile,
and a screw plug fitted to be screwed into or screwed out of the said plate, at will.
When screwed into the plate, the plug extends inwards into the room at a right
angle to the face of the plate.
The point of attachment to the sash is governed by the maximum extent of
opening which it is determined to allow to the sash for ventilation purposes;
it being understood that such maximum is less than sufficient to allow the passage
of a person. If only the upper sash be fitted with a plate and plug, the travel down-
wards of the said sash is prevented from exceeding the pre-determined maximum
limit by contact of the plug with the meeting rail of the lower sash; the upward
movement of which latter sash beyond the maximum is prevented by contact of its
meeting rail with the screw plug.
The maximum amount of opening allowed may be divided up between the two
Bashes in any desired proportions without shifting the regulating plug.
If the lower sash only be fitted with a regulating device, upward movement,
beyond the pre-determined maximum, is prevented by a stop plate screwed or
otherwise secured to the window frame and over-hanging the plug of the
regulator.
A second stop plate may be placed directly over the screw plug so as to prevent,
at will, any upward movement of the sash.
In the accompanying sheet of illustrative drawings,
Fig. 1 represents, in front elevation, and Fig. 2 in vertical section, part of a
window fitted, in accordance with this invention, with devices for affording scope
for ventilation combined with protection against the entrance by unauthorised
persons through the window.
b
To the inner face of each sash stile is screwed a plate a, of brass, gun metal or
other suitable metal or material. Screw plugs 6 are screwed into the plates a.
Fig. 3 shows a vertical section of a plate a with plug 6 screwed home therein.
The plugs are readily screwed in and out, and, to prevent their being mislaid,
they are preferably attached by chains 6' to the window frame.
The height at which the plates a are fixed to the window sashes is pre-
determined; it being understood that the maximum opening allowed by the travel
of the sashes is less than is requisite for the entrance of a person, either at top or
bottom. The maximum may be divided between the sashes without removing the
nlues h

page_text: When the plug appertaining to the upper sash is screwed into its plate, the range
of downward movement of the upper sash is limited by the meeting rail c of the
lower sash which the upper plug overhangs.
Similarly, the range of upward movement of the lower sash is limited by its said
meeting rail c which comes into contact with the plug of the regulator of the
upper Bash.
In cases where a regulating device is applied only to the lower sash, or if both
sashes be fitted and the plug of the upper regulator be out of its plate, the lower
sash is prevented from being raised beyond its maximum by the stop plate d
screwed or otherwise secured to the window frame and overhanging the plug of
the regulator of the lower sash.
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 :-
1.
Means for regulating and controlling the vertical movement of window sashes;
said means consisting late such as a and removable screw plug such as 6 (or
one such plate and plug for each sash) the plate being screwed to the sash, and the
plug fitted to be screwed at will into the plate so as to obstruct, by contact, either
with one of the meeting rails or with a stop plate such as d, the range of movement
of the sashes beyond a pre-determined maximum, substantially as hereinabove
described with reference to the accompanying sheet of drawings.
Dated this 4th dow of ML 100K
NICHOLAS WATTS,
Bristol, Chartered Patent Agent.