Improvements in Fastening Devices for Casements, Sashes, Doors, and the like.
Year: 1899

page_text: Date of Application, 22nd Feb., 1899
Complete Specification Left, 9th Oct., 1899-Accepted, 11th Nov., 1899
Improvements in Fastening Devices for Casements, Sashes, Doors, and
the like.
I, THOMAS PICKUP, of 76, Linaker Street, Southport, in the County of Lancaster,
Builder's Foreman, do hereby declare the nature of this invention to be as
follows:-
This invention has for its object a fastener for casements, sashes, doors and the
like, and has for its object to provide a fastener which will at no time form
any obstruction to the door or sash closing completely, also one which will fasten
automatically when the sash or door is closed, thus preventing it banging to and
fro in the wind, and one which will prevent such sashes or doors rattling, close
them tight and prevent draughts
In carrying my invention into effect, my fastener comprises a rotary catch or
claw mounted in a bracket secured to the sash or door, and having a handle
by which it can be rotated by hand, and a stationary cam or abutment secured
to the window or door frame. The latter is so arranged that when the sash
is closed, the claw will be in close proximity to the abutment, and by rotating
the claw it will engage the abutment and lock the sash tight. This abutment
is by preference made or arranged eccentrically in relation to the rotary catch,
so that the latter will bind tighter on the abutment the further claw is rotated.
Projecting from the edge of this abutment is a projection, and projecting from
the catch on the opposite side of the axis to that of the claw, is a similar projection
or lug adapted to come in contact with the stationary projection on the abutment
when the sash or other object to which the invention is fitted is closed. When
therefore the sash is closed by hand or is banged to by the wind, the lug on the
catch comes into forcible contact with the projection on the abutment, auto-
matically rotating the claw on its axis and causing the latter to engage the
stationary abutment on the frame, thus locking the sash fast. The sash or other
object is thus automatically fastened and cannot be opened again without turning
the handle which rotates the claw clear of the abutment.
By turning the claw by hand the opposite way by the handle, the construction
of the device ensures that the sash or door shall open, even should it stick in the
frame through the swelling of the woodwork or otherwise, as the lug on the claw
coming against the stationary projection on the abutment prises or forces it
open.
It is obvious that the claw may be made of any suitable shape. Thus for example
the claw may be a straight claw engaging a similar shaped abutment, or it may be
of an undercut or dovetail shape, or with a channel or groove, in each case the
abutment being shaped correspondingly. In some cases the handle for rotating
the claw might he dispensed with, in which case the claw is rotated to unfasten
the door or sash by manipulating the claw itself.

page_text: 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: -
1. A fastening device for locking the moving part of a window sash, door
or the like to the fixed or other part, comprising a rotary claw mounted in a
bracket on one part of window or door, and a stationary abutment secured to the
other part in a similar plane to that of the axis of the claw, said abutment being
so arranged eccentrically in relation to the rotary claw, that by rotating the latter
when the door or window is closed, the claw will not only engage the abutment,
but bind tighter thereon the further it is rotated, so as to lock the sash tight and
prevent draughts, substantially as described.
2. In a fastening device comprising a rotary fastener furnished with a claw
and mounted in a bracket on one part of the window or door, and a stationary
abutment secured to the other part with which the claw is adapted
to engage when the sash or door is closed, providing such abutment
with a projection, and the fastener with a similar projection. on the
opposite side of the axis to the claw, the said projection being so arranged as to
come in contact with the stationary projection on the abutment when the sash
is closed by hand or banged to by the wind, thereby rotating the fastener on
its axis and causing the claw to automatically engage the stationary abutment,
said projection serving also to prize the sash open when the fastener is turned by
hand the opposite way, substantially as described.
3. The general combined arrangement and construction of parts forming my
improved fastening device for casements, sashes, doors and the like, substantially
as set forth.
W. P. THOMPSON & Co.,
Patent Agents, of Liverpool, Manchester, Birmingham and London.