Improvements in Window-sash Frames.
Year: 1892

page_text: e of Application, 4th Oct., 1892-Accepted, 12th Nov., 1892
COMPLETE SPECIFICATION.
Improvements in Window-sash Frames.
I, ROBERT FREDERICK DAMPIER of Dundonald Villa Stoke Devonport in
the County of Devon, 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 improvements in the construction and arrangement of
window sashes and frames and has for its object so to construct and arrange such
Sashes and frames as to economise their cost by reducing the number of working
parts, and at same time to obtain greater efficiency in the means of ventilation.
By this invention I provide a perfect ventilating medium as both inward and
outward currents are obtained without creating a draft from the bottom sash
opening so frequently a cause in windows as at present constructed of disagreeable
and at times dangerous consequences to those experiencing it. Hence from a
sanitary point of view the window sashes and frames constructed in accordance
with this my invention will be found of great advantage. They will also be found
to last longer than others hitherto in use and as no sash weights are required and
rabbeting to the window openings is dispensed with, and further as only about half
the usual woodwork and window cord are employed their construction is very much
simplified the frame is easily fixed by screws into wood bonds provided and built
into the brick work.
According to this invention, in lieu of using sash weights, I have a cord at each
side of the window passing over axle pullies which I make use of instead of the
ordinary sash cord pullies. These cords are attached at one end to the top sash
and at the other to the bottom sash in such manner that when the one sash is
raised the other is lowered and vice versa. Hence a double current is ensured when
the window is opened no matter whether it is the top sash or the lower sash which
is manipulated. To avoid creating a draft underneath the bottom sash and still
to maintain a thorough circulation when it is desired to open the window simply
for ventilation purposes I form a somewhat deep inside lining upon the window
sill so as to allow of the bottom sash being raised say a couple of inches before any
actual opening is formed at the bottom of the window. The air inlet will then be
between the meeting rails that is under the top sash and up through the space
between the lower portion of the upper sash and the upper portion of the lower
sash, over the latter, and into the room, the outlet being through the open space
above the top sash. Thus a perfect circulation will be maintained without a draft
being caused at bottom of window.
And in order that this my invention may be fully understood and readily carried
into effect I will now proceed to describe same with reference to the accompanying
drawings in which similar letters of reference refer to like parts in all the figures.
Fig. 1. is a sectional end elevation of a window sash and frame constructed in
accordance with this my invention.
Fig. 2. is an inside elevation of the same and
Fig. 3. a sectional plan through line X Y Fig. 1.
e
is the
a is the top sash to which one end of the cord b is attached. This cord passes
over the axle pulley c and has its other end attached to the bottom sash d.
inside lining upon window sill formed sufficiently deep to allow of the lower sash
being raised some distance without causing an opening. 9 are the stiles which I
make in one piece only, carrying the parting beads / see particularly Fig. 4, which
is to a larger scale a sectional plan of stile parting bead, and sash frames. The
No 4" rabbets are
whole frame may be easily fixed in position by 6 screws.
required to the window openings but the whole may be made square throughout

page_text: the depth whether 9" or 14" through. Fig. 5 is a similar plan to that shewn in
Fig. 3, but adapted to a 14" thickness of brickwork whereas in the latter the
frame is shewn as applied to a thickness of 9".
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is.
1. In window sashes and frames the construction and arrangement of the top and
bottom sashes connected by cords passing over axle pulleys in such manner that the
raising of one sash lowers the other and vice versa substantially as hereinbefore
described and shewn in the accompanying drawings.
2. In window sashes and frames constructed and arranged with the top and
bottom sashes in connection by means of cords passing over axle pulleys as herein-
before described the somewhat deep inside lining formed upon window sill substan-
tially as and for the purpose above set forth.
3. The general construction, arrangement and combination of parts forming my
improvements in window sashes and frames substantially as and for the purpose
herein before described and shewn in the accompanying drawings.
Dated this 4th day of October 1892.
HUGHES, ELI & HUGHES,
76, Chancery Lane, W.C., Agents for Applicant.