OR APPERTAINING TO SASHES AND SASH FRAMES." 66 IMP
Year: 1880

page_text: PROVISIONAL SPECIFICATION left by John Boulter at the Office of the
Commissioners of Patents on the 29th April 1880.
JOHN BOULTER, of Cardiff, in the County of Glamorgan.
OR APPERTAINING TO SASHES AND SASH FRAMES."
66 IMPROVEMENTS IN
In my improved sash I obviate difficulties which have exercised many inventors,
and produce at once a cheap and efficient sash, and arrange it so that both sides of
the glass of both top and bottom sashes can be cleaned from inside the room, thus
doing away with the inconvenience and danger of cleaning from outside.
In the first place then I do away with the ordinary sash-weights by making one
sash balance the other, and I prefer to do this by means of a suitable chain or
chains, wire rope, or the like passing over suitably arranged pulleys in the frame.
The chain is generally attached at one end with a small screw arrangement, so that
it can be regulated for length at will. When the sashes are not made reversible
I prefer to attach the chain to the underside of the upper sash, so that it can still
be replaced in case of breakage without removing the sash.
Another important feature in this Invention is my plan of dividing the styles or
sides of the sash vertically, so that I have the ordinary sash but with narrow styles,
and the other portion of the styles severed from them but capable of sliding in the
ordinary grooves formed in or upon the frame by the beadings in the usual manner.
The severed portion of each style is a little thicker than the projecting beads, so
that each sash being pivotted centrally or otherwise to it is free to turn in or out
just clear of the beads. I provide suitable narrow grooves in the abutting portions
of each style, and in the sash portion I place a thin tongue or strip, preferably of
galvanized iron (for cheap work), though other material might be employed for it,
such for instance as brass or copper, and this tongue carries preferably within the
substance of the sash one or more snugs or projections through which pass screws
having milled heads or their equivalent, which can be turned by the thumb and
finger. When these tongues are forced out by the screws, they project into the
corresponding groove in the severed portion of the style, thereby making such joint
practically airtight. These screws I prefer to make so that their inner ends can
Screw into suitable plates in the severed portion of the styles, and by this arrange-
ment I not only force out the tongues into the grooves, as already described, but
absolutely screw the two portions of the styles together. It will be observed that
t is only necessary to withdraw these tongues when it is desired to turn the sashes
D
21

page_text: for cleaning purposes, et cetera. I arrange these various pieces so as not to interfere
with each other, and the sample which I have made works casily and freely.
I prefer to carry up the bottom of the frame and its bead considerably higher than
usual, and by this means and my method of connecting the sashes I can lower the
top sash when it is desired for ventilation a short distance, while the broad portion
at the bottom still comes up to the bottom of the lower sash and closes tho aperture.
Or if preferred one sash can bo tilted or inclined for ventilation by slacking the
screws and withdrawing the tongues, as already described, and for this purposo
I provide a suitable catch or other arrangement for holding the sash at any
convenient angle.
All springs are avoided by my arrangement; it sometimes happens that people
do not like to go to the expense of the "reversing" arrangement, in which case
that part of my Invention may be omitted. By my arrangement I considerably
reduce the cost of making, particularly in medium and best work.