Year: 1887

page_text: Date of Application, 5th Apr., 1887
Specification Accepted, 13th May, 1887.
We, WILLIAM TOWNEND of 13 Exeter Street Otley Road Inspector and FRANK
ULLATHORNE of 51 Barkerend Road Plumber both of Bradford in the County of York,
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 has for its object a screw fastener for window sashes combined with
a hardened steel guard, which guard slides over the aperture between the two meeting
bars and under the screw fastener for the purpose of preventing the screw from being
sawn through or otherwise tampered with from the outside of the window.
To carry out our invention we fix upon the top of the inner meeting bar of the sash
a hollow guide or box through which the screw passes freely and projects into a
screwed nut or bracket fixed upon the outer meeting bar.
The sliding steel guard is actuated by means of collars upon the screw.
The screw is made with a spring joint in order that the inner end and thumb piece
of the screw may be folded in level with the meeting bar, either vertically or
horizontally, so that the head of the screw or thumbpiece may not interfere with the
raising or lowering of the blinds by projecting.
In order to enable our invention to be fully understood we will proceed to describe
the same with reference to the accompaning drawings in which Figure 1 represents a
side elevation of the improved sash fastener as fixed in position and with the thumb-
piece of the screw projecting inwards.
Figure 2 represents a sectional elevation of the same as figure 1.
Figure 3 represents a plan of the sash fastener fixed in position, screwed up and
with the head or thumb piece of the screw folded in horizontally.
Figure 4 represents an end elevation of the sash fastener in which the head or
thumbpiece of the screw is folded up vertically.
Figure 5 represents a sectional elevation of the jointed screw, in which the contained
spiral spring A exerting pressure upon the square joint B retains the head or thumb-
piece E either in a straight line with, or at a right angle to, the screw D. The neck
or collar for actuating the steel guard is represented at C.

page_text: Similar letters refer to similar parts in all the figures.
The guide or Box F is screwed fast upon the top of the inner meeting bar K, and
the screwed nut or bracket G upon the outer bar I.
The screw D is passed through the guide F and the projecting end is screwed fast
into the nut or bracket G.
As the screw is entering the nut it carries forward the hardened steel guard H by
means of the recess or collars C formed in or upon the screw and engaging with the
guard causes it to slide across the aperture between the two bars K and L, thereby
protecting the screw from the underside.
Apertures or slits J are formed in the side or top of the guide or box F for the
purpose of receiving the head or thumbpiece when folded back.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we declare that what we claim
are
1. In a sash fastener for windows the spring jointed screw constructed and operating
substantially as described and represented in the accompanying drawings.
2. In a sash fastener for windows the sliding hardened guard for the purpose of
protecting the screw from being sawn or tampered with from the outside of the sashı
substantially as described and represented in the accompanying drawings.
3. In a sash fastener for windows the combination of the spring jointed screw, the
sliding hardened steel guard moved by collars or neck upon the screw, the screwed
nut or bracket, and the box or guide (through which the screw passes) fastened upon
the inner meeting rail of the window, all substantially as described and represented in
the accompanying drawings.
Dated this 21st day of Mana 1007