Year: 1886

page_text: I, HERBERT HENRY DENNE 79 Elsham Road Kensington W. Gentleman 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
My Invention relates to an improved fastener for sash windows and it has for
its object to provide a fastener which not only cannot be undone from the outside
either by an instrument introduced between the meeting rails of the sashes, or by
breaking the glass and thereby unlocking the fastener as is usually done by
burglars, but which will be locked by a key which can be removed so that the
window cannot be unfastened without the use of the key.
My Invention consists in the combination with the meeting rails of window-
sashes of a lock provided with a removable key by which alone the bolt can be
operated, the lock being secured to the one meeting-rail and the box catch or
staple in which the bolt engages when in the locked position fixed on the other
meeting rail, the bolt when the window is fastened lying across the gap or interval
between the two rails and being engaged by a catch which prevents rattling of
the sashes.
Reference is to be had to the accompanying drawing forming part of this
specification; wherein figure 1 represents a cross-section of the meeting rails of a
pair of sashes, the fastening being in elevation, and part of the staple or box being
broken away to show a catch for preventing rattling of the sashes; figure 2 is a
plan of the same.
A is the case of the lock which may be of any suitable internal construction,
preference being given to a lever lock of the dead bolt or drawer lock construction.
B is the box catch or staple in which the bolt is received when in the locked
position. The case A is secured to the meeting rail C of the lower sash and the
box or staple B to the meeting rail D of the upper sash, the two casings being
directly opposite one another as shown. In order to prevent the unfastening of
the window by the removal of the lock or its catch from the meeting rail the
casings of these two parts A and B are securely affixed to plates a b which are
bent downwards as at c d and are countersunk into and screwed to the abutting
faces of the two meeting rails C D which faces are inaccessible when the window
is closed. The plates ab are also screwed down on the top of the meeting rails

page_text: and the plate a is also bent downwards at the front so as to embrace the front face
of the meeting rail C to which it is screwed as shown. The bolt E of the lock is
made with a lateral notch e at one side in which a small catch fis caused to
engage when the bolt is shot for the purpose of holding the meeting rails together
and preventing rattling. The catch f is carried by a stem f¹ sliding in a slot in
the top of the box B and provided with a knob for operating it and is caused to
slide with sufficient stiffness by a slotted spring g fixed to the underside of the top
of the box B and bearing by its forked limbs upon the cross-head constituting the
catch f.
Having now particularly described and ascertained the nature of the said
Invention and in what manner the same is to be performed; I declare that what
I claim is ;-
1. The combination with the meeting rails of a pair of window sashes of a
fastener consisting of a lock and of a box staple or catch, the lock being affixed
to the one meeting rail and the box staple or catch to the other meeting rail,
substantially as specified."
2. A window fastener, consisting of a lock and of a box staple or catch adapted
to be fixed to the meeting rails of window-sashes in the manner described, the box
staple or catch being provided with a sliding catch adapted to engage with the
bolt of the lock when the latter is shot, all substantially as and for the purpose
described and represented in the drawings.