Improvements in or relating to Locking Catches for Window Fastening Bolts and the like.
Year: 1898

page_text: Date of Application, 31st Oct., 1898
Complete Specification Left, 31st July, 1899-Accepted, 2nd Sept., 1899
3.. L
Improvements in or relating to Locking Catches for Window
Fastening Bolts and the like.
I, ARTHUR THOMAS BENJAMIN MARKHAM, Silverdale, Church Road, Bexley
Heath, Kent, Watchmaker, do hereby declare the nature of this invention to be
as follows:
This invention consists of improvements in or relating to locking catches for
window fastening bolts and the like.
In carrying out my invention I provide a locking catch or tumbler, which is
pivotally attached to a base or plate upon which the locking bolt slides in
suitable sockets. The tumbler is so arranged that when the bolt is in its securing
position the tumbler or catch falls behind said bolt for the purpose of maintaining
it in this position. When the bolt is in its withdrawn or unsecuring position
the tumbler or locking catch engages in recesses in the bolt for the purpose of
maintaining it in its withdrawn or unsecuring position. The locking catch or
tumbler is arranged so as to return to its locking position after having been
removed from same, and this is attained in any convenient manner such as by
so weighting the tumbler as to cause it, through the action of gravity to return
to its locking position, or I may, if desired, employ a spring of any suitable
form for this purpose, I find it convenient to employ a tumbler or locking catch
of rectangular cross section, but of course it will be readily seen that this con-
figuration may be varied as required.
Dated this 31st day of October 1898.
Improvements in or relating to Locking Catches for Window
Fastening Bolts and the like.
I, ARTHUR THOMAS BENJAMIN MARKHAM, Silverdale, Church Road, Bexley
Heath, Kent, 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 consists of improvements in or relating to locking catches for
window fastening bolts and the like.
In carrying out my invention I provide a locking catch or tumbler, which is
pivotally attached to a base or plate upon which the locking bolt slides in
suitable sockets. The tumbler is so arranged that when the bolt is in its securing
Price 17

page_text: position the tumbler or catch falls behind said bolt for the purpose of maintaining
it in this position. When the bolt is in its withdrawn or unsecuring position,
the tumbler or locking catch engages in recesses in the bolt for the purpose of
maintaining it in its withdrawn or unsecuring position. The locking catch or
tumbler is arranged so as to return to its locking position after having been
removed from same, and this is attained in any convenient manner such as by
so weighting the tumbler as to cause it through the action of gravity to return
to its locking position; or I may, if desired, employ a spring of any suitable
form for this purpose; I find it convenient to employ a tumbler or
locking catch
of rectangular cross section, but of course it will be readily seen that this con-
figuration may be varied as required.
For purposes of illustration I will now refer to the annexed drawings in
which:
-
Figure 1, is a plan view shewing my fastener in its open position.
Figure 2, plan view of same in its locked position.
Figure 3, section through line X Y in Fig. 1.
The bolt a slides in the socket piece b carried on the plate c which has aper-
tures & for the purpose of enabling it to be secured in the window sash. The
locking piece e is pivoted at f being so arranged, that when at its raised position
it will fall through the action of its own weight or gravity. The bolt a is
provided with a recess into which the locking piece falls when it its withdrawn
position, and when extended for the purpose of locking, the catch piece e will
fall behind the bolt and prevent its withdrawal until the catch piece is again
raised.
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. In fasteners for windows of the class herein described, the combined con-
struction and arrangement of the various parts, substantially as described and
illustrated herein and for the purpose set forth.
2. In fasteners for windows of the class herein described, the employment
of a pivoted locking catch piece so weighted as to tend to fall towards the
initial or locking position after being raised, substantially as described and
illustrated herin, and for the purpose set forth.
Dated this 31st day of July 1899.