Improvements in the Construction of Fastenings for Windows.
Year: 1897

page_text: Improvements in the Construction of Fastenings for Windows.
I, WILLIAM OSBALDESTON, Medical Botanist, of 14, Station Parade, Harrogate,
Yorkshire, do hereby declare the nature of this invention to be as follows:-
This invention relates to an improved sash fastener and provides a simple means
by which the sashes may be locked together without danger of opening from the
outside.
I propose to employ an ordinary locking arm which is fitted to a plate secured
on the meeting rail of the upper sash and provided with a spring which holds
it in open or closed position.
To the plate fixed on the other meeting rail a catch is fitted which receives the
locking bar when it is turned into closed position and prevents it being forced
back until the catch is moved out of the way.
This catch consists of a spring the nut of which is bent down so as to form a
On the bar
nose, the body of the spring extending up in a slanting direction.
being turned over into locking position it will bear upon this spring and press..
it down until it passes the nose or end. A spring will then rise and the end
project up behind the bar so that the latter cannot be pushed back. The end of
the spring when it is pressed down passes through a small slot or opening in the
plate carrying it and the latter is formed slightly larger than is generally the
case or is provided with an extension in order to carry the spring catch.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.
Improvements in the Construction of Fastenings for Windows.
I, WILLIAM OSBALDESTON, Medical Botanist, of 14, Station Parade, Harrogate,
Yorkshire, 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 an improved window fastener and has for its object
to provide simple means by which the sashes may be locked together without danger
of opening from the outside.
For this purpose I employ an ordinary locking arm which is pivoted to a plate
secured to the meeting rail of the upper sash and is acted on by a spring to hold
it in its onen or closed position.

page_text: To the meeting rail of the lower sash is also secured a plate fitted with a catch
which permits of the locking-bar or arm being turned into its locked position, but
prevents its being forced back until the said catch is moved out of its way.
This catch consists of a spring plate the free end of which is bent vertically
downwards to form a nose whilst the other portion extends upwards in a standing
direction from the fixed plate. The vertical end or nose of the catch passes
through a slot in the said plate into a recess in the sash to permit of the catch
being forced down as the locking bar is turned over it into its locked position.
As the locking-bar clears the end of the catch the latter will spring up and act
as a stop to the said bar for preventing its being turned back or unlocked until
the said catch has been pressed down clear of the bar.
d is a
And in order to clearly understand the invention reference is made to the
accompanying sheet of drawings in which Fig. 1 is an elevation of the improved
fastening with the catch and slotted plate in section, and Fig. 2 is a plan thereof.
a is the locking bar pivoted to the plate 6 fixed to the upper sash c.
spring, fixed to the guard plate 61, and which acts upon the roller a¹ carried by
the bar to keep the latter in its locked or unlocked position. e is the spring
catch carried by the plate f fixed to the lower sash g and f¹ is the slot in the plate f
through which the bent end of the catch passes. h is the ordinary cam or locking
plate fixed to the plate f.
-
As the ban a is turned into its locked position, its end contacts with and presses
down the spring catch e until it is clear of the bent over end or nose of the catch.
The latter then springs up into the position shown in Fig. 1 and forms a stop
against the projection a² of the bar a thus preventing the latter being turned back
or unlocked. For unlocking the window the end of the spring, catch e is pressed
down, by one of the operators fingers, below the locking bar a into the recess in
the 'sash g.
The catch is thus free of the locking-bar so that the latter can be
turned into its unlocked position.
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) The improved window sash fastener comprising a pivoted locking bar acted
on by a spring and a spring catch which automatically acts as a stop to the said
bar as the latter is turned into its locked position, substantially as described and
shown in the drawings, and for the purposes specified.
(2) In an improved window sash fastener the combination of a pivoted locking
bar a provided with a roller a¹ and a projection a³, a plate 6 fixed to the sash c,
a spring d fixed to the guard-plate 61 and acting upon the roller a¹, a spring
catch e carried by a plate f fixed to the sash g, a slot f¹ in the plate f for receiving
the vertical end of the spring catch e and a cam or locking plate h, substantially
as described and for the purposes specified.
Dated this 26th day of July 1898
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicant.