IMPROVEMENTS IN WINDOW SASH FASTENERS, AND IN MEANS OF VENTILA- TION IN CONNECTION WITH WINDOW SASHES."
Year: 1872

page_text: LETTERS PATENT to William Walton, of No. 2, Worcester Street,
Pimlico, in the County of Middlesex, Gentleman, for the Invention
of "IMPROVEMENTS IN WINDOW SASH FASTENERS, AND IN MEANS OF VENTILA-
TION IN CONNECTION WITH WINDOW SASHES."
PROVISIONAL SPECIFICATION left by the said William Walton at the
Office of the Commissioners of Patents, with his Petition, on the
29th June 1872.
:
I, WILLIAM WALTON, of No. 2, Worcester Street, Pimlico, in the
County of Middlesex, Gentleman, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN WINDOW SASH FASTENERS, AND IN MEANS
OF VENTILATION IN CONNECTION WITH WINDOW SASHES," to be as follows :-
The object of this Invention is to secure the sashes from being opened
from the outside by the application of any contrivance that may be
applied for the purpose of burglary or illegitimate entry, and will ensure

page_text: the sashes to be securely fixed, and preventing rattling at any determined
height for the purpose of ventilation. The fresh air is so admitted as to
be free from dust and all noxious insects.
L..
foun nanta vafaronce
The locking plate A is hinged to the bed plate B which is secured by
screws to the top rail of the bottom sash opposite to the stile of the top
sash; the return end or keep C on the locking plate A enters the slot
at D on the back plate of the boxing E, which is let into the stile of the
top sash; G, G, is the face line of the top sash; the tumbler F is secured
in its position by a pin passing vertically through it and the sides of
the boxing. To lock the sashes, raise the locking plate and place it
into the recess of the boxing, the keep enters the slot, and in its
passage the tumbler acting on the vertical pin secures the blocking and
prevents the sashes being opened either way; to release to release the
locking, place the thumb of the left hand on the outer edge of the tumbler,
then draw the locking plate forward with the right hand by the knob
or key on to the bed plate, when the knob is removed. H is the keyhole.
The second part of this Invention has reference to the mode of venti-
lation. The ventilation is effected by a metal gauze blind acting on a
spring roller fixed to the head of the sash frame above the pulley of the
bottom sash, the lower edge of the metal gauze blind is secured to
the top rail of the top sash; when the top sash is drawn down for the
purpose of ventilation the metal gauze blind acts simultaneous with the
downward movement. A duplicate of the boxing is let into the stile of
the top sash at the required height over the boxing at the meeting rail.
The locking plate is inserted therein, the sashes and the ventilating
blind are then securely fixed, a free current of fresh air is admitted free
from dust and all noxious insects. This modo of locking the sashes and

page_text: ventilation can be applied to the windows of all buildings, private and
railway carriages, horticultural buildings, and to all window sashes that
slide up and down to admit light, with or without the ventilating
blind.
filed by the said William Walton in the Great Seal Patent Office
on the 23rd December 1872.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
WALTON, of No. 2, Worcester Street, Pimlico, in the County of Middlesex,
send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her:
Letters Patent, bearing date the Twenty-ninth day of June, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said William Walton, Her special licence
that I, the said William Walton, my executors, administrators, and
assigns, or such others as I, the said William Walton, my executors,
administrators, and, assigns, should at any time agree with, and no
others, from time to time and at all times thereafter during the term
therein expressed, should and lawfully might make, use, exercise, and.
vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN
WINDOW SASH FASTENERS, AND IN VENTILATION IN CONNECTION WITH WINDOW
SASHES," upon the condition (amongst others) that I, the said William
Walton, my executors or administrators, by an instrument in writing
under my, or their, or one of their hands and seals, should particularly.
describe and ascertain the nature of the said Invention, and in what
manner the same was to be performed, and cause the same to be filed
in the Great Seal Patent Office within six calendar months next and
immediately after the date of the said Letters Patent.
NOW KNOW YE, that I, the said William Walton, do hereby declare

page_text: the locking plate and place it in the recess of the boxing; the keep enters
the slot and in its passage passing over the face of the tumbler, which
falls over the locking plate; the sashes are then securely locked. To
release the locking, place the thumb of the left hand on the outer edge
of the tumbler, and draw with the right hand the locking plate out of
the boxing to the open position, as shewn by the dotted lines on the
sections, Figs. 1 and 6; the sashes can then be removed up or down as
required.
The second part of this Invention has reference to the mode of ven-
tilation, which is effected by a metal gauze G, linen gauze, or gauze of
other fabric, connected and acting on a spring roller H fixed to the head
of the sash frame by plates let into the pulley stiles above the pulley of
the bottom sash; the lower edge of the metal gauze is soldered on an iron
bar and let in flush on the inside face of the top rail of the top sash,
secured in its position by screws. When the top sash is drawn down for
the purpose of ventilation the metal or other gauze by the action of the
spring roller acts simultaneous with the downward movement of the
sash; a duplicate of the boxing is let into the stile of the top sash at the
required height over the one at the meeting rail; as shewn on the front
view of the sashes, Fig. 8; the locking plate is inserted therein, the
sashes and the ventilating blind are then securely fixed; a free current of
fresh air is admitted. To release the locking, apply the right and left
hand as has been described in the first part of this Specification.
Having thus deseribed the nature and objects of my said Invention
for improvements in window sash fasteners and in ventilation in con-
nection with window sashes, I declare that what I claim and desire
to be secured to me by the herein-before in part recited Letters Patent
is,―
Firstly. The bed plate, the locking plate, the boxing, and the tumbler
acting on the horizontal pin passing through it and the sides of the
boxing for locking the sashes, substantially as herein-before described,
and shewn on Drawing.
And, Secondly. The combined action of the sash keep and spring roller
or a wood frame fixed above the top rail of the top sash and fitted with a
metal gauze,. linen gauze, or gauze of any other fabric, for improved
means of ventilation in connection with window sashes, and to be applied

page_text: to the window sashes of all buildings that slide up and down to admit
light, and to all buildings for horticultural and other purposes, as herein-
before described, or any mere modification thereof.
In witness whereof, I, the said William Walton, have hereunto set
my hand and seal, this Twenty-third day of December, in the
year of our Lord One thousand eight hundred and seventy-two.
W. WALTON. (L.S.)