An Improved Window-catch.
Year: 1889

page_text: Date of Application, 27th Apr., 1889-Accepted, 15th June, 1889
An Improved Window-catch.
I, DANIEL JENKINS DAVIES, of Dukestown, Tredegar in the county of Monmouth,
plasterer, 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 :-
The improved catch or fastening for window sashes in which this invention consists
is constructed, arranged and fitted as follows:-
Screwed or otherwise firmly secured to the upper face of the top bar of the lower
sash is a chamber in which is a block through the middle of which, as a nut, is passed
a screw spindle extended through the front end of the chamber and terminating
beyond it in a knob or button.
Coiled around the spindle is a spiral spring one end of which bears against the
inner face of the front end of the chamber, the other end bearing against the
block.
On the upper face of the bottom bar of the upper sash of the window is secured a
chamber corresponding in shape to that secured to the lower sash.
The end of the chamber on the upper sash is tapped to receive the screwed spindle
aforesaid. The spiral spring acting against the block causes the latter to project
beyond the open end of the chamber of the lower sash and into the chamber of the
upper sash to an extent governed by a stop taking into a groove provided in the top
of the block. While the block is in this position the sashes are immovable and if it
be desired to bind them together more effectually the screwed spindle is screwed up
into the solid end of the chamber on the upper sash.
To disconnect the sashes the spindle is unscrewed free of the solid end of the chamber
on the upper sash and the block is then drawn into the other chamber by exerting an
inward pull on the knob of the spindle.
Referring to the accompanying sheet of drawings, Fig. 1 represents a vertical
section of the catch as applied to a window. Fig. 2 is a sectional plan.
Secured to the top bar a of the lower sash of the window is a chamber through
which is extended the spindle c working in the loose block d as a nut.
Coiled around the spindle c is a spiral spring e bearing at one end against the outer
end of the chamber and at the other end against the nut d. Secured to the under
bar of the upper sash is a chamber g corresponding in shape to the chamber b.
The closed end of the chamber g is tapped to receive the spindle c. The spiral spring e
maintains, in the absence of any counteracting influence, the block d projected in
part into the chamber g. While the block d is in this position the sashes cannot be
separated and if it be desired to bind them together more effectually the spindle c is
screwed into the solid end of the chamber 9, as shown.
When it is desired to disconnect the sashes, the spindle c is first screwed back out
of engagement with the solid end of the chamber g and the nut d is then drawn into
the chamber 6 by an inward pull exerted on the spindle c at the knob or button
thereof.
The sashes may then be moved. By the stop h working in a groove in the top of
the nut d the latter is prevented from being forced wholly out of the chamber b.
By unscrewing the stop the nut d and spring e may, at any time, be removed.
Accordingly, a fresh spring may be readily substituted for a defective or fractured
ona

page_text: Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :--
The improved window-catch consisting of the chambers and g secured to the
upper and lower sashes respectively, recessed nut d, removable stop h, or its equivalent,
screwed spindle c and spring e, constructed, arranged and operating substantially as
hereinbefore described.
Dated this 22nd day of Morah 1880
NICHOLAS WATTS,
Applicant's Agent.