An Improved Method of Raising and Lowering Sash Windows.
Year: 1891

page_text: Date of Application, 16th Jan., 1891
Complete Specification Left, 9th May, 1891-Accepted, 27th June, 1891
PROVISIONAL SPECIFICATION.
An Improved Method of Raising and Lowering Sash Windows.
JAMES MARTIN School House Kirby Street, Bermondsey Joiner do hereby
declare the nature of this invention to be as follows:-
By means of a rack on the stile of the sash and a pinion in the casing of the
window operated by a key, I raise or lower the sash. may use two racks and
pinions, one on each side, the pinions connected by means of rods and bevelled cogs.
Dated this 16th day of January 1891.
JAMES MARTIN.
COMPLETE SPECIFICATION.
An Improved Method of Raising and Lowering Sash Windows.
I JAMES MARTIN of School House Kirby Street Bermondsey in the County
of Surrey, Joiner do hereby declare the nature of my invention and in what
manner the same is to be performed to be particularly described and ascertained in
and by the following statement :-.
My present invention relates to an improved method or means for raising and
lowering window sashes. The object being to be able to lift or lower either sash
from the inside of a room only, and in such a manner that the common annoyance
of not being able to move "stuck sashes" is obviated and the window be left
may
open without it being possible to open or close it from the outside to attain which
I arrange each sash of a window as illustrated in the accompaning sheet of
drawings in which Fig. 1 is a front sectional elevation one half thereof being taken
on line a a and the other half thereof on line bb of Fig. 2, which latter is a side
elevation of my invention as applied to an ordinary window frame and sashes and
Fig. 3 is a sectional plan taken on line c c and d d respectively of Fig. 1.
Like letters of reference denote corresponding parts in each view.
Each stile E of the upper sash has a rack G secured to it and gearing with each
said rack G is a pinion H which is worked by means of a worm P each said
worm P being secured to a vertical shaft K and K. The shaft K is driven by
means of bevel gearing S one said wheel being fastened to the lower end of
shaft K and the other to the end of a shaft Q running at right angles therewith
and bearing in the window frame as shown. The outer end of said shaft Q receives
a key O which is made in the form of a crank so that it may be easily turned in
order to operate the upper sash in the manner hereinafter set forth.
The upper end of spindle K is geared with a cross or horizontal shaft K' which
drives by the bevel gear m the opposite vertical spindle K' which by means of the
worm J and intermediate pinion H drives the rack G on the upper sash
simultaneously.
It will be obvious that by turning the handle or key O in one direction or the
other the upper sash may be either raised or lowered as required and when the
window is opened it cannot be moved from the outside and only from the inside of
the room by the aid of the key O which may be removed. The lower sash of the
window has a rack G' secured to each sash stile E and it is arranged with raising
and lowering mechanism in a similar manner to that hereinbefore described with
reference to the upper sash. I preferably arrange the key shaft for moving the
lower sash on the left side; of the frame, as shown in dotted lines Fig. 1.

page_text: 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. In means for raising and lowering window sashes the use of racks G and G'
secured to the sash stiles E in combination with pinions H and worms P substan-
tially as described and illustrated in the accompaning drawings.
2. In means for raising and lowering window sashes the use of worms P operating
racks G and G¹ and worked by bevel gearing S and key O all combined substan-
tially as described and set forth in drawings annexed.
Dated this 8th day of May 1891.
H. F. BOUGHTON, M.I. Mech. E.,
Sheffield and Barnsley.