Improvements in Window Sash and like Fasteners or Catches.
Year: 1896

page_text: Date of Application, 17th June, 1896
Complete Specification Left, 15th Mar., 1897-Accepted, 1st May, 1897
PROVISIONAL SPECIFICATION.
Improvements in Window Sash and like Fasteners or Catches.
We, ALFRED BROWN and HENRY CLARKE PRUCE, trading as Alfred Brown
and Company, of Smallbrook Street, in the City of Birmingham, Manufacturers,
do hereby declare the nature of this invention to be as follows:-
This invention relates to that class of window fanlight and like sash fasteners in
which a catch or fastener and a locking plate are employed, and in which the
former is attached to an end of the horizontal middle bar or meeting rail of one
sash and the latter to the upright bar of the other sash.
Now our invention relates to the fastener part and consists in a means or device
in the form of a cam for the withdrawal of a spring bolt on a cord being obliquely
pulled.
In carrying out our invention, we employ a fastener part and a locking plate
part. The former consists of a bracket secured to an end of the meeting rail of
one sash and having a sliding and spring bolt passing through a box part of it, and
with the back end provided with a face or bearer plate, against which the inclined
edge of a cam lever, bifurcated at its rear with a roller between the branches, and
pivotedly connected at its forward end to the after part of the bolt stem, takes a
bearing. The fore end of the bolt is tapered.
Now as the pulley coming at the cleft end of the cam is considerably below the
centre of the pivot and the cam face is above the pivot, when a cord passing round
the pulley and attached to the architrave of the window frame and having a
weight at one end, is pulled, the cam is made to turn upon the face end of the
bracket and so draw out the bolt by the angular movement made by the bolt upon
the said face of the bracket as a fulcrum.
The locking plate consists of a strip of metal, with a stop at its upper end, and
a number of ratchet-toothed shaped stops arranged at equal distances along the
same, so that the bolt wipes over the inclines of the stops on the window being
closed, but the bolt has to be withdrawn by the excentric or cam before the window
can be opened.
Our invention is equally applicable to catches for fanlights and the like.
Dated this task c
2000
Improvements in Window Sash and like Fasteners or Catches.
We, ALFRED BROWN and HENRY CLARKE PRUCE, trading as Alfred Brown
and Company, of Smallbrook Street, in the City of Birmingham, Manufacturers,
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 :-
This invention relates to that class of window fanlight and like sash fasteners

page_text: in which a catch or fastener and a locking plate are employed, and in which the
former is attached to an end of the horizontal middle bar or meeting rail of one
sash and the latter to the upright bar of the other sasb.
Now our invention relates to the fastener part and consists in a means or device
in the form of a cam for the withdrawal of a spring bolt on a cord being obliquely
pulled.
In carrying out our invention, we employ a fastener part and a locking plate
part. The former consists of a bracket secured to an end of the meeting rail of
one sash and having a sliding and spring returned bolt passing through a box part
of it, and with the back end provided with a face or bearer plate, against which
the inclined edge of a cam excentric or lever, bifurcated at its rear with a roller
between the branches, and pivotedly connected at its forward end to the after part
of the bolt stem, takes a bearing. The fore end of the bolt is tapered and
engages with one or other of a series of teeth arranged equidistantly or otherwise
along a locking plate carried by the other part of the sash and in a line with
the bolt.
Figure 1 of the accompanying drawings is a perspective view of a window fitted
with a fastener or catch constructed according to my invention.
Figure 2 is a perspective view of the said fastener with its locking plate,
operating cord and cognate or accessory fittings separated or removed from the
window frame and shown upon an enlarged scale.
Figure 3 is a topside plan of the fastener separately and
Figure 4 is a longitudinal vertical section of the same upon the dotted lines a²
Figure 3, with the bolt in its fastening position, whilst Figure 5 is a like sectional
view as Figure 4, but with the sliding bolt withdrawn.
The same letters of reference indicate corresponding parts in the several figures
of the drawing.
The said fastener a is secured to one of the meeting rails 6', of the sash frame a,
by the attachment plate a², and consists of the box or body part a³, having sliding
within the interior of it, the spring returned bolt c, the stem c',
encircled
by the coiled spring d, bearing at one end against the back of the head c, (whose
nose end is inclined or chamfered at c³) and at the other end against the inside a*,
of the box a³.
e is the bifurcated cam lever, pivotally or jointedly connected at e, to the rear
ende, of the bolt stem, and with the faces e³, of the side plates e', of the same
coming and bearing against the abutment or face plate a, at the back of the
fastener. e is the roller or pulley mounted on the pin e, between the sides of the
cam and around which passes the bolt-withdrawing cord f, whose upper end is
attachedly secured to the plate/', carried on the sash frame at 62, and whose lower
end is provided with the handle f, the said cord f, together with the cord g,
secured to the other side of the frame or sash serving also as a means for pulling
down the sash after the bolt has been withdrawn, whilst the other cords h, h
proceeding respectively from the plates f¹, f, and over the pulleys, f
attached to the window frame, are for the purpose of again raising and closing the
window.
i is the locking plate screwed or otherwise made fast to the side sash bar b
adjacent to the other meeting rail 6, and are the equi-distant teeth on the
face of the same, with one or other of which the nose end of the fastener bolt
engages.
As the pulley e, coming at the cleft end of the cam e, is arranged considerably
below the centre or pin e2 by which the said cam is pivoted to the stem c¹ of the
bolt c, and as the cam faces e are above the pivot, when the cord f, passing round
the said pulley e, and attached to the architrave of the window frame is pulled
the said cam is made to turn upon the face plate a, of the bracket or body part
and so draw out the bolt by the angular movement made by the bolt upon the said
face plate of the bracket as a fulcrum.
The locking plate which may have a stop at its upper end, has its teeth shaped

page_text: and arranged at equal distances along the same, so that the bolt wipes over the
inclines of the stops on the window being closed, but the bolt has to be withdrawn
by the excentric or cam before the window can be opened.
In applying our invention to catches for fanlights and the like, the bolt a, may
be attached to the swinging frame thereof, whilst the bar i, is made in the form of
a quadrant and is carried by a fixed part of the framing, and it is understood that
instead of employing a cam or excentric of the form shown, we may use a double
armed or bell cranked lever, arranged to act in substantially the same way.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed we declare that what we
claim is :-
First. In fasteners or catches for window sashes and the like, operating the
sliding bolt through the medium of a cam, excentric or double-armed or bell-
cranked lever, jointedly connected to an end of the bolt and taking a bearing
against a part of the bolt casing, or against a face plate thereof, on the cam or
equivalent being outwardly turned, substantially as described and set forth.
Secondly. In fasteners or catches for window sashes and the like, the combina-
tion with a sliding and spring-returned bolt, of the operating cam, excentric or
lever, substantially as described and set forth.
Thirdly. The improvements in sash, window and like fasteners or catches, and in
the general construction, arrangement and combination of the parts of the same,
substantially as and for the purpose described and set forth.
Doted this 12th dox of March 1807
ALFRED BROWN,
HENRY CLARKE PRUCE
By Henry Skerrett,
24 Temple Row, Birmingham, Agent.
ALFRED BROWN,
HENRY CLARKE PRUCE
By Henry Skerrett,
24 Temple Row, Birmingham, Agent.