IMPROVEMENTS IN WINDOW SASHI FASTENERS
Year: 1884

page_text: I FREDERICK BROWN, Stuart Street, Luton, Bedfordshire, Ironfounder do
hereby declare the nature of my invention for IMPROVEMENTS IN WINDOW SASHI
FASTENERS, to be as follows:-
The said improved fastener has an arm connected to a plate fixed on the
meeting rail of the top sash which when closed or in process of being closed
embraces and presses against the outer edge of a curved catch connected to a plate
fixed on the meeting rail of the bottom sash and thus the two sashes are drawn
closely together in the usual manner.
By my invention the plate attached to the meeting rail of the top sash has a
vertical plate running along its outer edge which is returned at a right angle a
short distance on to the plate itself, within this angle there is a square bed of
metal cast on the plate having its front inner corner slightly rounded off, the top
surface of this bed is below the top of the vertical plate and forms the bed on
which the arm works and which locks the arm at its heck and prevents its being
unlocked until it has first been drawn forward.
The arm has a square heel with a slotted hole and has a dependent piece cast on
its under side immediately in front of the metal bed and to a corresponding depth,
the arm works on this bed and is jointed to it by a heade pin with a screwed
point which passes through the slotted hole in its heel into the metal bed before
described thus allowing the arm to be drawn forward or forced back into its
locked position by an ordinary flat steel spring one end of which is rivetted or
screwed to the face of the vertical plate and the other end presses against the face
of the dependent piece on the under side of the arm forcing back the arm into its
locked position which when thus locked cannot b: unlocked until the said arm is
first drawn sufliciently forward for its heel and dependent piece to clear the
returned end of the vertical plate and the face of the bed, it is therefore diflicult
if not practically impossible to unfasten it from the outside.
Dated this 11th day of January 1884.

page_text: I FREDERICK BROWN, Stuart Street, Luton, Bedfordshire, Ironfounder, do
hereby declare the nature of my invention for WINDOW SASII-FASTENERS and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
The said improved sash-fastener has an arm fig. 3 connected to a platej fixed
on the meeting rail of the top sash which when closed or in process of being closed
embraces and presses against the outer edge of a curved catch c connected to a
plate fixed on the meeting rail of the bottom sash and thus the two sashes are
drawn closely together in the usual manner.
The plate fig. 1 attached to the meeting rail of the top sush has a vertical
plate running along its outer edge which is returned at a right angle at d, a
short distance on the plate itself within this angle there is a square bed of metal E
fig. 8, cast on the plate having its front inner corner slightly rounded off the top
surface of this bed is below the top of the vertical plate i and forms the bed on
which the arm fig. 3 works and which locks the arm at its heel L and prevents its
being unlocked until it has been first drawn forward, this arm has a slotted holo f.
and has a dependant piece g. fig. 10 cast on its under side close to the metal bed E
fig. 8 and to a corresponding depth the arm works on this bed and is jointed to it
by a headed pin fig: 4 with-a screwed_point which passes through the slotted holo
in its heel into the metal bed before described thus allowing the arm to be drawn.
forward or forced back into its locked position by an ordinary steel spring hone
end of which is rivetted or screwed to the face of the vertical plate i and the
other end presses against the face of the dependent piece g. on the under side of
the arm forcing back the arm into its locked position figs. 1. 7. which when thus
locked cannot be unlocked until the said arm is first drawn sufficiently forward for
its heel L and dependent piece g. to clear the returned end d. of the vertical plate i
and the face of the bed E it is therefore diflicult if not practically impossible to
open it from the outside.
Instead of the vertical plate i fig. 1 running continuously along the outer edge
of the plate the middle part of this plato may be omitted the two ends only
being retained one cud forming the angle of the bed to which the arm fig 3 is
connected the other end forming a stop m. for the said arm to strike against when
unlocked in which case the continuous vertical plate i will be on the inner edge of
the plate jas shown figs. 6. 7. 8. 9. and the spring h attached to the same instead
of to the vertical plate fig 1, which gives support to the arm fig. 3 when in action,
I therefore give preference to this arrangement.
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 the locking of the arin of a sash-fastener at its heel substantially as
described and represented in the annexed drawings.
Dated this eighth day of October 1884.