An Invention for Preventing the Rattling of Windows, Doors, and Shutters.
Year: 1888

page_text: COMPLETE SPECIFICATION.
An Invention for Preventing the Rattling of Windows, Doors, and
Shutters.
1 CHARLES BROWETT of Westfield near the City of Coventry in the County of
Warwick Gentleman do hereby declare the nature of my invention for PREVENTING
THE RATTLING OF WINDOWS DOORS AND SHUTTERS and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement:
I take a straight piece of steel, iron, or brass wire of suitable thickness and about
eight inches long. For ordinary purposes Number 8 guage steel wire is suitable. On
one end of the wire I form an eye of about half an inch external diameter and about
one inch and a half further up the wire I twist the wire into another eye of similar
size so as to form a single coil spring whose plane is the same as or parallel with the
plane of the first eye. I next bend up the last inch of the wire at a right angle to the
plane of the two eyes. The wire must be bent up on that side of the coil spring on
which the coil lies and not downwards, so that the underside of the two eyes may both
bed firmly when laid on a flat surface and not rock as they would do if placed with
the other side under. On this last inch I mount a bobbin of wood vulcanite india-
rubber or other suitable material with or without a band or ring of other material so
as to rotate freely on the wire. This bobbin is retained upon the wire by a small
washer over which the wire is headed or rivetted. In the instrument now finished,
the holes in the eyes and the axis of rotation of the bobbin must be in one and the
same straight line.
In the annexed Drawing figure 1 shews a plan of the wire with the eyes formed in
it and bent as described, figure 2 shews a side view of the Instrument complete.
To apply this invention to an ordinary sash window 1 fix my invention by
two screws through the two eyes to the vertical bead on the architrave against
which the sash runs in such a position that when the sash is opened by being raised
the bobbin shall be below the two eyes but when the sash is one which is opened by
being pulled down the bobbin shall be above the two eyes and the periphery of the
bobbin bears upon the sash.
The sash is then drawn past the bobbin and the wire is bent or set so as to cause it

page_text: to exert pressure against the sash when drawn back again and thus effectually prevent
all rattling. It is preferable to employ two of the contrivances to each sash. The
amount of pressure required is given by the degree of set.
In applying my invention to hinged doors or casements I fix one or more of the
instruments to the jamb or architrave of the door or casement in such a manner that
the door or casement shuts against the instrument, a pressure being thus continually
exerted on it after it is fastened which effectually prevents it from rattling.
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 instrument or contrivance herein before particularly described and the application
thereof in the manner and for the purposes hereinbefore mentioned.
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