AN AUTO- MATIC WINDOW SASH FASTENER
Year: 1885

page_text: I CHARLES HENRY MARRIOTT WHARTON of 78 Cross Street Manchester
Barrister-at-Law do hereby declare the nature of my invention for AN AUTO-
MATIC WINDOW SASH FASTENER to be as follows: -
1. By means of a balance or sliding weight acted upon and overbalanced only
when the window is being closed to secure the window automatically.
2. In the accompanying plan an oblong piece of brass or other metal with a hook
or bolt (d.) at the lower end and having a slot (c.) extending along its length and
hereinafter called the "tumbler" is suspended from one end of the slot on a
pivot (e.) which in its turn is supported by two perpendicular stays (f) fixed at
the extreme edge of the near sash so that the edge of the tumbler is at the edge of
the near sash and the hook or bolt extends over the far sash and into a catch (g)
fixed thereon. By raising the tumbler it may be reversed and suspended on the
pivot at, the opposite end of the slot as shown in figure C. on the plan.
3. On the side of the tumbler opposite to the bolt is a projecting piece of
metal (6.) hereinafter called the block having a hole drilled through it in a
perpendicular direction and through this hole is a rod (a.) made to slide up and
down so that when the bolt is in the catch the end of the rod drops into a socket
below thus preventing the bolt from returning or being pushed out of the catch.
Instead of the rod (a.) dropping into a socket it may be reversed as shown in the
plan and the piece of metal (h.) at the end may fall into a space between the
perpendicular stays and an inclined plane (i) shown on the plan. Above and below
the block and attached to the rod are two pieces of metal (h) & (k) which
respectively prevent the rod from sliding out of the hole in either direction.
4. In place of the sliding rod arrangement the system shown in figure E on the
plan may be adopted namely, an additional slot (m) parallel to the slot which
works on the pivot and having a metal bar (n) made to slide up and down therein
may be so arranged that when the bolt enters the catch the metal bar will fall into
a groove attached to the perpendicular stays.
5. To open the fastener in its first form the rod is lifted out of its socket or the
piece of metal (h) is lifted out of the space and by a continuous action the tumbler
is projected over the far sash so as to lie on the top of the catch fixed in the far
sash as shown in figure B on the plan. The window is then raised and the tumbler
Price Rd1

page_text: losing the support of the catch hangs on the pivot with the bolt upwards as shown
in figure C. As the window descends the rod which now projects over the far
sash comes in contact with the catch and is forced upwards until the tumbler is
overbalanced as shown in figure D on the plan with the result that the bolt is
projected into the catch and the rod or the piece of metal as the case may be, drops
into the socket or space and the window is secured as shown by figure A on the
plan. In the arrangement shown in figure E the fastener is opened by lifting the
metal bar (n) and projecting the tumbler until it lies upon the catch as shown in
figure B the bar falling back again into its place when the tumbler is overbalanced,
the overbalancing being produced by the tumbler itself coming in contact with the
catch and being forced upwards by the action of closing the window.
Dated thin 10th dow of Contemben 100K

page_text: I CHARLES HENRY MARRIOTT WHARTON of 78 Cross Street Manchester
Barrister at Law do hereby declare the nature of my invention for AN AUTO-
MATIC WINDOW SASH FASTENER and in what manner the same is to be performed,
to be particularly described and ascertained in and by the following statement:-
1. By means of a balanced or sliding weight acted upon and overbalanced only
when the window is being closed to secure the window automatically.
2. In the accompanying plan an oblong piece of brass or other metal with a
hook or bolt (d.) at the lower end and having a slot (c.) extending along its length
and hereinafter called the "tumbler" is suspended from one end of the slot on a
pivot (c.) which in its turn is supported by two perpendicular stays (f. f.) fixed at
the extreme edge of the near sash so that the edge of the tumbler is at the edge of
the near sash and the hook or bolt extends over the far sash and into a catch (g.)
fixed thereon. By raising the tumbler it may be reversed and suspended on the
pivot at the opposite end of the slot as shewn in Fig. C. on the plan.
3. An additional slot (m.) in the tumbler parallel to the slot which works on the
pivot and having a metal bar (n.) shewn in Figs. B. and E. made to slide up and
down therein is so arranged that when the bolt enters the catch (9.) the metal bar
will fall into a groove (a.) in each of the perpendicular stays. At each end of
such metal bar and outside the perpendicular stays is a knob (y.) by which the .
metal bar is lifted out of the groove and the fastener opened.
4. In place of the additional slot (m.) in the tumbler and the bar (n.) falling
into the groove (x.) the system shown in Fig. F on the plan may be adopted
namely: On the side of the tumbler opposite to the bolt is a projecting piece of
metal (b.) hereinafter called the block having a hole drilled through it and through
this hole a rod (a.) is made to slide up and down so that when the bolt enters the
catch (9.) the end of the rod to which is attached a square piece of metal (.) drops
into a space below formed by the perpendicular stays (f f) and an inclined
plane (i.) shewn on the plan thus preventing the bolt from rebounding or being
pushed out of the catch. In the act of overbalancing the piece of inetal (h.) is
projected against the inclined plane and slides into the space before mentioned.
Above the block and attached to the rod (a.) is a small washer (k.) which prevents
the rod from sliding out of the hole in the block.
5. To open the fastener the metal (n.) is lifted out of the groove (x.) by means
of the two knobs (y. y.) and by a continuous action the tumbler is projected over
the far sash so as to lie on the top of the catch (g.) as shewn in Fig. B on the plan.
The window is then raised and the tumbler losing the support of the catch (g.)
bangs on the pivot (e.) with the bolt upwards as shewn in Fig. C. As the window
is closed the tumbler which now projects over the far sash comes in contact at the
part (8.) with the catch (g.) and is forced upwards until the tumbler is overbalanced
as shewn in Fig. D on the plan with the result that the bolt is projected into the
catch the metal bar (n.) drops into the groove (x.) and the window is secured as
shewn in Fig. A. on the plan. In the arrangement shewn in Fig. F. on the plan
the fastener is opened by lifting the rod (a.) until the part (h.) is above the

page_text: inclined plane (2.) and then projecting the tumbler forward until it rests on the top
of the catch (9.) the remainder of the action being exactly similar to that described
in the first arrangement and shewn in Figs. A. B C. and D. on the plan.
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 :-
1st The whole combination as shewn in the plan forming an automatic thief
proof window sash fastener without any spring.
2nd The method of overbalancing by the slot and pin as distinguished from a
simple swing.
3rd The method of overbalancing by the action of the far sash on a tumbler
projecting over the near sash.
4th The method of securing the fastener by a bar working in a slot and falling
into a groove.
5th The method of securing the fastener by the sliding bar shewn in Fig. F on
the plan.
6th The simple method of opening there being no strain on the fingers.
7th Both hands are at liberty to lift the window after the tumbler has been
projected on to the top of the catch.