An Improved Ventilating Sashfastener.
Year: 1888

page_text: Date of Application, 6th Dec., 1888
Complete Specification Left, 6th Sept., 1889-Accepted, 9th Nov., 1889
PROVISIONAL SPECIFICATION.
An Improved Ventilating Sashfastener.
I, JOHN COLE, of 99 Blackheath Hill, Greenwich in the County of Kent,
Upholsterer, do hereby declare the nature of this invention to be as follows:-
This Invention consists of a sashfastener of peculiar construction having a small
trigger or stop in the arm, to prevent its being opened from out side and also a hook
on a rotating vertical har projecting upwards from the pivot joint of the arin, so
that when the sashfastener is opened the window can be allowed to remain partly
open for ventilation without being entirely unfastened, and without the possibility
of anyone entering the room through the window.
The vertical bar with hook is attached to, or made solid with, the movable arm of
the fastener, and projects upwards therefrom in such a way that it can be caused to
overhang and control the sash or not, as may be required.
The arm has a double motion and works both to right and left differing in this
respect from an ordinary fastener. As it turns, it carries the vertical bar with it.
When the arm is turned on one side the hook over hangs the sash, but when turned
on the other side the hook is out of action.
The arm is curved and passes over a double tapered segmental shaped catch in the
centre of which is a slot, or notch, to receive a small trigger or stop attached to
the knob. This stop is so hinged or pivotted to the arm that it readily falls into
the notch, and thus prevents the arm from being moved, by a blade passing through the
sash. The arm extends over and grips the catch so as to tighten and firmly hold the
sash in position.
COMPLETE SPECIFICATION.
An Improved Ventilating Sashfastener.
I, JOHN COLE of 99 Blackheath Hill, Greenwich, in the County of Kent,
Upholsterer, 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 is designed to afford entire safety from thieves operating externally
while at the same time allowing the window to be kept partly open for the admission
of air during sultry weather.
It consists of a sashfastener with a double action-arm turning in either direction
that is to say to right or left, when in the fastened or locked position.
I will now proceed to describe it in reference to the accompanying drawings.
It will be seen that it has a small trigger or stop at the end of the arm A which
when the fastener is locked, falls into a corresponding notch or slot B in the catch C
so that the arm A cannot be turned back to the open position until the trigger T
is raised. This prevents the window being opened by anyone outside the sash.
The principal feature of the fastening is a small hook H placed on a rotating
vertical bar G projecting upwards to any preferred distance from the pivot joint I
of the arm A. The effect of this arrangement is that when the fastener is turned
back into the open position, the hook H can be caused to overhang the other sashbar,
or not, as desired.
This results from the double action of the arm A before referred to, which when
turned one way throws the hook forward as shewn in Figs. 2 & 3 so that the sash

page_text: can be partly opened, and when turned the reverse way throws the hook behind, as
shewn in Fig. 2, so that the sash can be opened to its full extent. The action of
the hook is therefore controlled by the action of the arm A with which it is made
solid. The arm is kept steady in either of its three positions by means of a rectangular
base K which presses firmly against the spring S placed at the back of the arm for
that purpose.
The arm A is curved and passes over a double tapered segmental-shaped catch C
with a slot or notch B as before stated to receive the trigger or stop T. This trigger
or stop T is so hinged or pivotted to the arm A, that it falls into the notch B by its
own weight and thus protects the arm from being thrust aside by a blade passing
through the sash. The arm also grips the catch so as to tightly hold the sashes in
position and prevent shaking.
Fig. 1 and 2 shew respectively a front elevation and plan of my fastener, when in
the locked position with the sash closed, when the hook H is turned on one side.
The other positions of the arm A are shewn by dotted lines. Fig. 3 shows the sash
partly open and held securely in that position by the hook H.
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 :-
A ventilating sashfastener with Vertical bar and hook, and double acting arm and
catch, the said arm actuating the said hook, so as to allow of the window being
secured in the partly open position when desired, as herein explained and set
forth.
Dated this 6th day of Santamban 1000
S. S. BROMHEAD,
97, Newgate Street, E.C., Patent Agent.