Improvements in Screw Fasteners for Windows.
Year: 1886

page_text: Date of Application, 21st June, 1836.
Complete Left, 10th Feb., 1887.
Complete Accepted, 15th Apr., 1887.
Improvements in Screw Fasteners for Windows.
I EDWIN WILSON, of Midland Buildings, Bradford in the County of York,
Wholesale Ironmonger, do hereby declare the nature of this invention to be as
follows:-
This invention relates to novel and useful improvements in that class of window
sash-fastener in which a screw is employed to bind the two sashes together and the
object of the said invention is to prevent such screws projecting from the window
frame when they are unscrewed.
My improvement consists in forming the metal fitting attached to the bottom sash
in two parts, consisting of an attachment plate secured to the sash and of a lug
pivotted thereto in such a manner that the said screw when unscrewed from the fitting
attached to the top sash may be turned from the position it occupies at right angles
with the meeting rails" of the sashes to a position parallel with such "meeting
rails," and thereby placed flush with the sash.
Suitable means are employed to limit the motion of the said pivotted lug and a
shoulder or stop is preferably fixed on the screw to prevent it being totally withdrawn
from such lug.
1
T
100%
DRACUP & NOWELL,
Agents.

page_text: I, EDWIN WILSON, Midland Buildings, Bradford, in the County of York, Wholesale
Ironmonger, 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 relates to novel and useful improvements in that class of window-sash
fastener, in which a screw is employed to bind the two sashes together, and the object
of the said invention, is to prevent such screws projecting from the window frame
when they are unscrewed.
My improvements consist in forming the metal fitting attached to the bottom sash
in two parts consisting of an attachment plate adapted to be secured to the sash, and
of a lug pivotted thereto in such a manner that the said screw when unscrewed from
the fitting attached to the top sash may be turned, from the position it occupies at
right angles with the meeting rails of the sashes, to a position parallel with such
meeting rails, and thereby placed flush with the sash. Suitable means are employed
to limit the motion of the said pivotted lug and a shoulder or stop is preferably fixed
on the screw to prevent it being totally withdrawn from such lug.
In order to describe my invention more in detail reference is to be had to the
accompanying drawing forming a part of this specification in which similar letters of
reference indicate corresponding parts in all the figures.
Figure 1, represents a plan of a screw-sash fastener constructed in accordance with
my invention in which the screw is, represented in a closed position. Figure 2, is a
similar view representing the screw in the position it occupies when the fastener is
open. Figure 3, is an elevation of the fastener. Figure 4, is a longitudinal section
of the attachment plate for the bottom sash together with the pivotted lug and screw,
the pivot of the lug being also shown in section. And Figure 5, is an elevation of
the said plate and attachments thereto at right angles to the latter figure.
The lug A, through which the screw B passes, is pivotted to the attachment plate C,
by means of the pivot D, which is rivited over the washer F, thereby perinitting the
lug A, and screw B, mounted therein to be turned from the position represented in
Figure 1, to that represented in figure 2.
The flanged base G, of the lug A, bearing upon the plate C, is provided with stop
pieces H, H, adapted to engage with the stop pin J, secured in the plate C, and
thereby limit the notion of the lug A.

page_text: -
The collar K, is provided to prevent the screw B, being removed from the lug A,
and it consists of a wire ring pressed round an annular groove, formed in the screw,
after it has been passed through the lug. And the hole through the lug A, is enlarged
at L, to allow the collar to pass into it when the screw is withdrawn from the fitting M,
on the top sash. The shoulder N, in such hole engaging with the collar K, prevents
the screw from being removed.
Having now particularly described and ascertained the nature of my said Invention
and in what manner the same is to be performed, I declare what I claim is :-
1. In a screw-sash fastener, pivotting the lug or projection in which the fastening
screw is mounted to the attachment plate adapted to be secured to the lower sash,
substantially as herein shown and described, and for the purpose specified.
2. The combination with the said pivotted lug, of the stop device for limiting the
rotation of such lug, substantially as herein shown and described.