Improvements in Window Sash Fasteners
Year: 1898

page_text: I, WILLIAM POTTER, Naval Pensioner, of 1, Harcourt Road, Gosport, Hants,
do hereby declare the nature of this invention to be as follows:-
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This invention for "Improvements in Window Sash Fasteners," has for its object
to provide a device by which the sashes are securely fastened together and cannot
be unfastened by means other than legitimate operation.
In the meeting rail of the lower sash a bolt provided with an operating knob
at one end and at the other formed with projecting lips is fitted, the said bolt
being adapted to pass into a socket formed in the other meeting rail and when
turned through a right angle the projecting lips of the bolt engage under the
edges of the socket and prevent the bolt being withdrawn. The bolt is normally
pressed towards the meeting rail of the other sash by means of a spring arranged
round it. On the end of this bolt adjacent to the operating knob two projecting
arms are formed which normally regulate the amount of rotatory movement given
to the bolt by coming in contact with one or other of two guide pins and when
the knob is drawn out against the action of the spring these two projecting arms
can be made to lie across the ends of the said guide pins and keep the operating
knob and bolt in the drawn out position.
When the window is closed and the device is in the fastening position the pin
is in engagement with the socket. To unfasten, the operating knob is turned
at right angles so as to disengage the bolt from the socket and is then drawn
forward until the projecting arms lie across the guide pins so that the bolt is
entirely within the meeting rail and the window can be opened. To fasten, the
operating knob is turned sufficiently for the projecting arms to come off the guide
pins when the bolt shoots forward under the influence of the spring into the socket
on the other meeting rail and when turned through a right angle engages with
the edges of the socket as above described.
1
1000
Improvements in Window Sash Fasteners.
I, WILLIAM POTTER, Naval Pensioner, of 1, Harcourt Road, Gosport, Hants,
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 fol-
lowing statement:-
This invention for Improvements in Window Sash Fasteners. has for its obiect

page_text: to provide a device by which the sashes are securely fastened together and cannot
be unfastened by means other than legitimate operation.
In the meeting rail of the lower sash a bolt provided with an operating knob
at one end and at the other formed with projecting lips, is fitted, the said bolt
being adapted to pass into a socket formed in the other meeting rail and when
turned through a right angle the projecting lips of the bolt engage under the
edges of the socket and prevent the bolt being withdrawn. The bolt is normally
pressed towards the meeting rail- of the other sash by means of a spring arranged
round it. On the end of this bolt adjacent to the operating knob two projecting
arms are formed which normally regulate the amount of rotatory movement given
to the bolt by coming in contact with one or other of two guide pins and when
the knob is drawn out against the action of the spring these two projecting arms
can be made to lie across the ends of the said guide pins and keep the operating
knob and bolt in the drawn position.
When the window is closed and the device is in the fastening position the pin
is in engagement with the socket. To unfasten, the operating knob is turned
at right angles so as to disengage the bolt from the socket and is then drawn
forward until the projecting arms lie across the guide pins so that the bolt is
entirely within the meeting rail and the window can be opened. To fasten, the
operating knob is turned sufficiently for the projecting arms to come off the guide
pins when the bolt shoots forward under the influence of the spring into the socket
on the other meeting rail and when turned through a right angle engages with
the edges of the socket as above described.
In order to more clearly describe this invention reference is had to the accom-
panying sheet of illustrative drawings in which
Fig. 1 is an elevation showing a window sash fastener constructed according
to this invention and
Fig. 2 is a cross section of the same.
In the meeting rail a, a bolt b is fitted this bolt having at one end an operating
knob and being formed at the other end with projecting lips 62. A socket c
is fitted in the meeting rail a¹ and it will be seen that in one position the projecting
lips 6 engage under the edges of the socket c and prevent the bolt 6 being
withdrawn but by turning the bolt 6 the projecting lips 62 can be disengaged
from the edges of the socket c to permit of the disengagement of the bolt b.
A spring d is fitted round the bolt 6 within the casing e in the meeting rail a
tending to press the bolt 6 towards the meeting rail a¹.
The bolt b is further provided with the arms 63 and guide pins f are mounted
on the meeting rail a and regulate the movement of the bolt b. On pulling the
bolt b by means of the knob 6', outwards against the action of the spring d the
arms 63 can be caused to lie across the ends of the guide pins f to retain the bolt b
in its drawn out position as indicated in dotted lines.
When the window is closed and the device is in the fastening position the bolt b
engaged by means of the projecting lips 62 with the edges c¹ of the socket c thus
securing the window sashes. To unfasten, the operating knob b¹ is turned to
disengage the bolt 6 from the socket c and is then drawn forward and the arms b³
caused to lie across the guide pins f so that the bolt b is entirely within the meeting
rail a and the window can be opened. To fasten, the operating knob 61 is turned
sufficiently for the arms 63 to come off the pins f when the bolt 6 shoots forward
under the influence of the spring d into the socket c and when turned through a
right angle its projecting lips 63 engage with the edges c¹ of the socket c to secure
the sashes together.
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:-

page_text: having at one end an operating knob and at the other end projecting lips being
further provided with projecting arms, a socket on the other meeting rail with
which the projecting lips of the bolt engage, a spring pressing the bolt towards
the other meeting rail, and guide pins for regulating the turning of the bolt and
across which the projecting arms on the bolt can be caused to lie when the bolt
is drawn out, substantially as described and for the purposes specified.
(2) An improved window sash fastener comprising bolt b having operating
knob b, projecting lips and projecting arms 63, mounted on meeting rail a,
socket chaving edges cl, mounted on meeting rail a spring d, casing e, and guide
pins fall arranged and operating substantially as described with reference to the
drawings, and for
Dated this 29th day of July 1898
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GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.