Year: 1887

page_text: Date of Application, 30th Nov., 1887
Complete Specification Left. 26th July, 1888
Complete Specification Accepted, 7th Sept., 1888
1. DANIEL KNOWLES of Wood Street Willenhall in the County of Stafford Brass-
founder &c. do hereby declare the nature of this invention to be as follows:
The object of my invention is to provide a springless, simple, durable and cheap
Sash Fastener which shall effectually frustrate attempts to open the window
from the outside without breaking a pane of glass to gain access to the locking-
part of the said "fastener," yet, at the same time to be easy of release from the
inside.
To the top-rail of the bottom-sash is fixed a bush, preferably of metal, having a pivot
on which rotates an arm or lever from a position parallel to the sash-opening, to one
at right angles: one end of the said arm or lever passing under an ordinary rack
attached to the bottom-rail of the top sash, thus securing both sashes from vertical
movement.
This end of the arm or lever has upon it two projections which are the same
distance apart as the greatest width of the hook or rack which is attached to the
bottom-rail of the top sash, and in the "closed" position of the fastener these
projections fitting the said hook do prevent the annoyance of "rattling." The
extremity of the arm or lever which is now over the bush fixed on the top-rail of the
bottom sash is provided with a trigger, which, by gravity, drops into a notch made
in the bush, thus securing the arm or lever from being pushed back to the " open
position.
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To release the fastener it is only necessary to raise the trigger and turn the arm or
lever through the space of a quarter-of-a-circle until it is parallel to the sash
opening, then the trigger drops into another notch in the sime bush, which action
retains the arm or lever in the "open" position.

page_text: A modification may be made of the same action: except that the opposite end of
the same trigger rises into notches in the same relative positions, only, the said notches
are now made in another bush on the pivot; this bush is placed above the said arm or
lever.
COMPLETE SPECIFICATION.
Improvements in Sash Fasteners.
I DANIEL KNOWLES of Wood Street, Willenhall in the County of Stafford Brass-
founder 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:—
The object of my invention is to provide a springless, simple durable and cheap
Sash Fastener which shall effectually frustrate attempts to open the window from the
outside without breaking the glass to gain access to the locking part of the said
Fastener, yet, at the same time to be easy of release from the inside.
To the top rail of the bottom sash is fixed a bush, A, preferably of metal, having a
pivot, B, on which rotates an arm or lever, C. from a position parallel to the sash-
opening, to one at right-angles:-one end of the said arm or lever, C. passing
under an ordinary rack, D, attached to the bottom rail of the top sash, thus socuring
both sashes from vertical motion.
This end of the arm or lever has upon it two projections, E. F. which are the same
distance apart as the greatest width of the rack, D, and, in the "closed" position of
the Fastener these projections fitting the said hook or rack, D, do prevent the
annoyance of rattling.
The extremity of the arm or lever, C. which is now over the bush, A, fixed on the
top rail of the bottom sash, is provided with a trigger, G, which, by gravity, drops
into a notch made in the bush, A, thus securing the arm or lever, C. from being pushed
back to the "open" position.
To release the fastener it is only necessary to raise the trigger, G, and turn the
arm or lever, C. through the space of a quarter-of-a-circle until it is parallel to the
sash-opening, then the trigger, G, drops into another notch in the same bush, which
action retains the arm or lever in the "open" position.

page_text: A modification may be made of the same action: Thus :-The opposite end of the
same trigger rises into notches in the same relative positions, only, the said notches
are now made in a second bush on the same pivot, this bush is placed above the arın
or lever.
Having now particularly described and ascertained the nature of my said
Invention, and, in what manner the same is to be performed 1 declare that what
I claim is
1. An arm or lever having at one extremity two projections as before described ;
and, at the other extremity, a trigger acting without springs.
2. The notches in their various positions both upon that bush which is attached to
the top rail of the bottom sash, and, the notches in their various positions upon that
bush which is fixed above the arm or lever.