Improvements in Sash Fasteners.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Sash Fasteners.
JAMES SIMPSON, Millwright, 17, Henry Street, Goole, Yorks, do hereby declare
the nature of this invention to be as follows:-
To be made of brass and steel. Consisting of brass lever, working on a pivot,
held in position, when fast, by a catch, which latter is also held firmly in position
by a steel spring, which is automatic in its action. The lever rises and falls at
right angles to the glass, and cannot therefore be pushed aside by an instrument
thrust between the sashes, nor upwards because of aforesaid automatic catch.
When open lever stands at right angles to sash in which position it is held by a
spring again acting automatically. The two parts can be fixed firmly on narrow
sashes because fixed parallel to them. Does not permit rattling because of a
feather fitting in base of lever.
I, JAMES SIMPSON, Millwright, 17, Henry Street, Goole, do hereby declare
the nature of my invention for improvements in "sash fasteners" and in what
manner the same is to be performed, to be particularly described and ascertained in
and by the following statement :-
According to this invention, I make a "sash fastener" of brass and steel, or other
metal. The fastener consists of two brass plates, to one of which a brass lever is
attached moving on a pivot, and falling upon the other brass plate, and held
fixed in position by a catch, which falls upon it automatically, by means of a steel
spring, pressing the catch down on the lever from above, and so preventing the
lever from being raised by any instrument thrust between the sashes. The lever,
when raised, is held in position by a steel spring which catches automatically into
a groove in the lever. A small feather, fitting into a grove of the lever, when
down, prevents shaking of the sashes.
Figure 1 of the accompanying drawing is a plan of the "sash fastener" showing
position on sash when closed. ƒ and g are brass plates, as given in duplicate
in and g of which h is front view of f and k end view of g¹.
"
Figure 2 represents side view of lever a closed, and held in position by catch b,
on lever a, thus locking it, and
working on a pivot, and grooved, to fall on a "lip
preventing it from being raised by upward pressure to the lever, or by any
instrument thrust between the sashes.

page_text: The spring c holds the lever, when raised in upright position by falling into a
groove in the side of lever a similar to that in view in front as shown in section
of lever in Figure 6. See at A B.
The feather d fitting into a groove in bottom of lever, when down, prevents
shaking of the sashes.
Figure 3 shows catch b, working on a pivot and grooved, to fall on a "lip", made
on lever a as shown in duplicate in Figure 5, thus locking it, whilst spring e
attached to brass plate g, and pressing on catch 6 from above, as shown in
duplicate by e¹ causes the catch b to fall automatically on to the lever a when
closed.
Having now particularly described and ascertained the nature of the said in-
vention, and in what manner the same is to be performed I declare that what I
claim is :-
The construction of "sash fasteners" with spring automatic catch, holding lever
in position and feather preventing sashes from shaking.
D11111.
τ
11005