Improvements in Sash Fasteners.
Year: 1891

page_text: Date of Application, 11th July, 1891
Complete Specification Left, 5th Oct., 1891-Accepted, 7th Nov., 1891
PROVISIONAL SPECIFICATION.
Improvements in Sash Fasteners.
I, THOMAS ALLEN SHAW of 113 Baird Street West Bowling Bradford, Engineer,
do hereby declare the nature of this invention to be as follows:→
The object of this invention is to provide a secure sash fastener, that cannot be
opened from the outside.
With this object I construct a metal case of suitable dimensions, in which a
bolt works, such bolt extending the whole length of the case, and projecting
beyond one end of same, the extending end of the bolt, being provided preferably with
a knob or other device. In the interior a crossplate or partition is affixed in which,
one or more slots are cut, corresponding with a projection or projections on the
bolt.
This case and bolt,is affixed by screws or other method to the lower sash, 80
that it projects over the upper sash, the projecting portion or a part of same being
open on the under side to admit a strong metal eye or plate affixed to the upper
sash, through which the bolt is shot by any suitable spring in the case to secure. the
window.
When the bolt is in position by turning same so that the projections are not
opposite the slots in the before mentioned plate it cannot be forced either way until
returned to its original position.
The space between the two sashes if not covered by a portion of the case, may
be covered by means of a separate plate, thus preventing the insertion of a knife
or other implement from the outside.
Dated this 11th day of July 1891.
GRAHAM & GRAHAM,
Agents for Applicant.
COMPLETE SPECIFICATION.
Improvements in Sash Fasteners.
I, THOMAS ALLEN Shaw of 113 Baird Street West Bowling Bradford Engineer
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 this invention is to provide a secure fastener for windows or the
like, which fastener can only be opened from the inside of the apartment, & the
working parts of which are enclosed in a metal or other case to prevent the possibility
of the bolt being pushed back or cut by a knife or other implement inserted between
the sashes. For the carrying out of this object, I construct my sash fastener as
heroinafter described, having reference at the same time to the accompanying
drawings in which :-
Fig. 1. is a plan view of the under side of the sash fastener.
Fig. 2. a longitudinal sectional elevation on line 1-2 of (Fig. 1.).
Fig. 3. a cross section on line 3-4 (Fig. 1) and
Fig. 4. an end elevation respectively of my invention.
Fig. 5. is.an elevation of the staple i (Figs. 1 & 2) and
Fig. 6. represents a portion of a window frame partly in section with the fastener
attached thereto.

page_text: a. a. is the case or cover constructed of any suitable dimensions & material,
but preferably of either brass, iron, or steel, closed at each end & having one or
more but preferably three cross plates or partitions bb. These partitions & also
the end of the case or cover marked c are drilled to receive a rod or bolt d
extending the whole length of the case & projecting any suitable distance beyond
the end c of the case, this projecting part of the rod or bolt being provided with a
knob or other suitable device e. Through the bolt d a pin fis passed of such a
length that it projects on each side of the same forming studs or projections
against which one end of a spiral spring g, surrounding the bolt d, impinges, while
the other end of the said spring presses against the inside of the end c of the case,
thus forcing the bolt d up to the closed end of the case.
The two partitions b', 6' are cut away sufficiently to admit of the spiral spring g
passing through them with the bolt, & these openings also have two slots cut on
opposite sides, as shown at h. h. in Fig. 3. to allow the pin f to pass through them
in one position only; the bolt d can by this means be locked in either position &
can only be withdrawn from or inserted into the staple i when the positions of the
pin & the slots h correspond. On the knob e an index line or groove; may he
cut if desired corresponding with the pin & the positions of the slots h h may
also be indicated on the end of the case c (Fig. 4) this however is not shown in
the drawing as the same does not necessarily form any essential part of the
invention.
The fastener is affixed to the lower sash in of the window (see Fig. 6) preferably
by means of screws inserted therein through holes k, k, k, k, formed in the wings or
flanges 1,. The case a projects over the upper sash as shown. The staple i
shown in elevation in Fig. 5 is affixed to the upper sash n by means of screws
passed through the holes in the flanges or wings in such a position that
when the window is closed, the staple enters the hollow chamber in the case as
shown in section in Fig. 2.
The action of the fastener is as follows When the bolt is to be withdrawn,
the same is turned by means of the knob e till the line j & pin fare in a horizontal
position as shown in Fig. 2, when the bolt can be withdrawn till the pin f passes
the partition it should then be turned sufficiently to prevent the return of the
pin through the slots h h in partition in which position the bolt is free from
engagement with the staple i, & the window can then be opened or closed at will.
To fasten the window when closed it is only necessary to turn the bolt d till the
pin can pass the slots in the partitions b' b when the bolt is instantly shot
into the staple i by the action of the spring g & can be locked in that position by
again turning it & thus preventing the return of the pin through the slots in the
partition.b¹.
Great security is thus obtained by the use of this my invention. Firstly by the
whole being contained in the metal case, the solid part of which (between the
partitions & b³) covers the division between the sashes thus preventing
the insertion of a knife or other instrument & secondly by locking the bolt it
would be very difficult to withdraw the same from outside even if the glass was
broken for that purpose as the index could not be seen.
The end of the bolt d &
also the hole o in the staple i may be made of a tapered form by which means the
fastener will also tend to provent the sashes from rattling, the bolt and staplo
being kept in close contact by the pressure of the spring.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed I declare that what I
claim is :-
1. The sash fastener as herein described having a case or cover closed at both
ends & containing slotted partitions through which a bolt slides by the action.of
a suitable spiral or other spring, & engaging with a suitable staple as herein
substantially specified & illustrated in the drawings.

page_text: 2. In combination with a rash fastener as above described the locking device
consisting of the pin & the slotted partitions 16 in conjunction with the spring (g)
Bubstantially as and for the purposes herein specified.
Dated this 5th day of October 1891.
GRAHAM & GRAHAM,
Agents for Applicant.