Year: 1899

page_text: Date of Application, 19th Aug., 1899
Complete Specification Left, 7th Apr.. 1900-Accepted, 12th May, 1900
We, THOMAS SAMPSON, of Euston Road, London, Ironmonger, and ALEXANDER
HENLEY ATTWATER, of Southampton Street, Fitzroy Square, London, Architect
and Surveyor, do hereby declare the nature of this invention to be as follows:-
This invention relates to casement stays, and has for its object, and has for
its object, to provide a locking stay which admits of being fastened or locked in
any opened position, or in its closed position, and from which its release for
opening can only be effected by a key."
The apparatus consists of two parts, viz., a stay bar and a swivelling body, the
latter of which comprises an upright hollow bracket swivelly connected at its
lower end to an attachment plate fixed to the stationary frame of the window, and
being interiorly fitted with a spring or other bolt, catch or fastener, which is
released or pressed back out of the way by a key introduced through a hole or
holes in the upper part of the body, whose middle has a transverse through fare
hole or opening through it suitable for the passing therethrough of the stay bar,
whose inner end is jointed to an attachment plate or bracket adapted to be
secured to the opening and closing window or casement, whilst one of the edges
of the same is formed with a series of notches or ratchet teeth, with one or other
of which the catch of the bolt engages.
The apparatus is so arranged as to be self-locking and self-releasing when the
stay bar is moved in one direction for closing the window, but the key has to be
used to effect its release before it can be moved in the other direction for opening.
Thus, assuming the window to be held in an open position, on pulling the same
inwards for closing, the stay slides freely through the body of the fastening the
nose of whose bolt wipes over the teeth of the rack, but which is automatically
held and locked in any position to which it may be brought by the nose of the
said spring bolt engaging behind the shoulder of one or other of the teeth. But
to liberate the stay for opening the window, the key has to be introduced and
turned, which depresses the spring bolt and takes its nose clear of the ratchet
teeth.
We do not confine ourselves to the use of ratchet teeth on the stay bar, as a
series of studs, depressions, sinkings or the like may be employed in lieu thereof,
nor do we limit ourselves to the form of the spring bolt, which may be arranged
engage the stay in various ways other than that described.
to
Dated this 18th day of August 1899.
THOMAS SAMPSON,
ALEXANDER HENLEY ATTWATER.
By Henry Skerrett,
Agent for Applicants.

page_text: improvements in Casement Stays.
We, THOMAS SAMPSON, of Euston Road, London, Ironmonger, and ALEXANDER
HENLEY ATTWATER, of Southampton Street, Fitzroy Square, London, Architect
and Surveyor, 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 casement stays, and has for its object, to provide
a locking stay which admits of being fastened or locked automatically in any
opened position, or in its closed position, from which its release can only be
effected by a key or equivalent.
Figure 1 of the accompanying drawings represents a plan of a self-locking
casement stay.
Figure 2 is a side elevation of the said stay, showing the swivelling casing
of the lock fitted to the stationary frame of the window.
Figure 3 is an end view of the apparatus, showing the attachment plate of
the lock casing (which is arranged to swivel) in section.
Figure represents a complete vertical section of the lock mechanism, show-
ing the bolt thereof in locking engagement with the casement stay, which is
thereby held against movement in an outward direction for opening the window
although it is free to move inwards for closing.
Figure 5 is a similar view to that represented by Figure 4, but showing the
parts in the positions they assume when the bolt has been disengaged by means
of a key from the said stay, which is thereby liberated to permit of the window
being either opened or closed.
Figure 6 (Sheet 2) represents a horizontal section of Figure 4 upon the dotted
line, but with the key in position.
The same letters of reference indicate corresponding parts in the said Figures I
to 5 of the drawings.
This form of the apparatus consists of two parts, viz., a stay bar a, hinged to
an attachment plate, on a window or casement frame, and a swivelling body
or lock casing b, in the form of an upright hollow bracket, swivelly connected
at its lower end to an attachment plate 6' fixed to the stationary frame c of the
window, and being interiorly fitted with a spring bolt, catch or fastener d, which is
released or pressed back out of the way by a key e introduced through a hole or
holes in the upper part of the body, whose middle has a transverse thorough-
fare hole or opening through it suitable for the passing therethrough of the
stay bar of the opening and closing window or casement, whilst one of the edges
of the same is formed with a series of notches or ratchet teeth with one or
other of which the nose end or catch of the bolt engages, the said bolt having
a transverse hole or clearance de, made through it, lignable with the thorough-
fare hole in the casing, within which the stay is capable of sliding.
In this arrangement the spring f, is located underneath the bolt, which has a
vertical sliding movement within its casing to automatically engage behind one
or other of the shoulders a², on the stay. The apparatus is thus so arranged
as to be self-locking to prevent the stay sliding outwards for opening the window,
but is self releasing when the stay bar is moved in one direction for closing
the window by reason of the inclined teeth on the stay bar wiping over the
nose of the bolt, which yields downwardly against the pressure of the spring, but
the key has to be used to effect the release of the said stay before it can be
moved in the other direction for opening the window. Thus, assuming the
window to be held in an open position, on pulling the same inwards for closing

page_text: the stay slides freely through the body of the fastening the nose of whose bolt
wipes over the teeth of the rack, but which is automatically held and locked in
any position to which it may be brought by the nose of the said spring bolt
being compelled by the spring to engage behind the shoulder of one or other of
the teeth. But to liberate the stay for opening the window, the key has to be
introduced and turned, which depresses the spring bolt and takes its nose clear
of the ratchet teeth, as shown in Figure 5.
We do not confine ourselves to the use of ratchet teeth on the stay bar, as a
series of studs, depressions, sinkings or the like may be employed in lieu thereof,
nor do we limit ourselves to the form of the spring bolt, which may be arranged
to engage the stay in various ways other than that described.
Figure 7 represents one modification of our invention in which the bolt d',
is depressed into engagement with teeth on the top of the stay bar a, by means
of a spring f, whilst the releasing of the said bar for admitting the opening of
the window is effected by raising the bolt and retaining it clear of the said teeth
by means of a key e.
If necessary, tumblers may be used in connection with the bolt of the lock in
order to render it more difficult to pick the lock or surreptitiously disengage the
bolt from the stay. Further, instead of the bolt being automatically engaged
with the stay with a snap action or by means of a spring, it is obvious that it
may be shot into locking engagement therewith by means of a key, the bolt
being, in this case, retained in its locking position by a spring, alike unto an
ordinary lock.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
First A locking casement-stay, comprising a stay bar provided with teeth,
projections, depressions or their equivalent, and a turning or swivelling bracket
or casing provided with locking mechanism for engaging the said stay, either
with the engagement of the bolt being effected by a spring or snap action and
its withdrawal by a key, or with both the shooting and withdrawal of the bolt
being effected by a key, substantially as herein described, and also as set forth
in the accompanying drawings.
Secondly: A locking casement stay, comprising a stay bar provided with
ratchet teeth or their equivalent, and lock mechanism, located within a swivelly-
mounted casing and consisting of a sliding bolt, automatically taken by means of
a spring into locking engagement with the said stay (which works through
coincident holes in the casing and bolt in such a manner as to permit of the stay
sliding in one direction but rendering it incapable of movement in the other
direction, the withdrawal or disengagement of the said bolt being effected by a
key, substantially as herein described and set forth in the accompanying drawings.
Dated this 6th day of April 1900.
THOMAS SAMPSON,
ALEXANDER HENLEY ATTWATER,
By Henry Skerrett,
24, Temple Row, Birmingham, Agent for Applicants.