Improvements in Screw Fasteners for Windows.
Year: 1886

page_text: Date of Application, 25th Aug., 1886.
Complete Left, 25th May, 1887.
Complete Accepted, 28th June, 1887
PROVISIONAL SPECIFICATION.
Improvements in Screw Fasteners for Windows.
I, JOHN STOW, of 39 Parsonage Road, West Bowling, Bradford, in the County of
York, Joiner and Builder, do hereby declare the nature of this invention to be as
follows:-
This invention relates to novel and useful improvements in screw fasteners for
windows, and its object is to provide a sash fastenor of simple construction, the screw
of which is permanently connected to the fitting on the bottom sash and is capable of
assuming a vertical position to enable it to clear the top sash.
For this purpose the plate secured on the bottom sash is provided with two knuckles,
or lugs, between which a block is pivotted parallel to the meeting rails. The sash
screw passes through a hole in the said pivotted block, which allows it to be moved
from a horizontal to a vertical position when unscrewed from the usual fitting on the
top sash.
To prevent the screw being removed from the hole in the pivotted block: the
shank or plain part of the screw is reduced in diameter, and the pin or rivet by which
the block is pivotted is arranged to cut the periphery of the said hole thereby reducing
it and preventing the large end of the screw passing through.
Dhe out
DRACUP & NOWELL,
Bradford, Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Screw Fasteners for Windows.
I, JOHN STOw, of 39, Parsonage Road, West Bowling, Bradford, in the county of
York, Joiner and Builder, 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 screw fasteners for 5
windows, and its object is to provide a sash fastener of simple construction, the screw
of which is permanently connected to the fitting on the bottom sash and is capable of
assuming a vertical position to enable it to clear the top sash.
For this purpose the plate secured on the bottom sash is provided with two knuckles
or lugs between which a block is pivotted parallel to the meeting rails. The sash
screw passes through a hole in the said pivotted block, which allows it to be moved
from a horizontal to a vertical position when unscrewed from the usual fitting on the
top sash.
To prevent the screw being removed from the hole in the pivotted block, the shank
or plain part of the screw is reduced in diameter, and the pin or rivet by which the 1
said block is pivotted is arranged to cut the periphery of the said hole thereby reducing
it and preventing the large end of the screw passing through.
In order to more particularly describe my invention 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 sash fastener constructed in accordance with my
invention. Figure 2, is a side elevation of the same representing the screw in the
closed position the meeting rails being shown in section. Figure 3, is a similar view
representing the screw in the position it occupies when open. Figure 4, is a front
view of the fitting for the bottom sash with the block pivotted thereto. And Figure 5,
is a similar view of such fitting without the said block.
The scrow A passes through a hole B in the block C pivotted by the pin or rivet D
between the knuckles or lugs E projecting from the attachment plate F secured to
the meeting rail G of the bottom sash. The shank or plain part of the screw A is of
smaller diameter than the end on which the thread L is cut, and as the pin D pivoting
the block C cuts or passes through the hole B such hole is reduced in size, and the
screw A is prevented from being withdrawn therefrom by reason of the projecting
thread L.
The projection H on the plate or fitting J attached to the meeting rail K of the top
sash is of ordinary construction, and is provided with a hole cut with a female thread
adapted to fit the screw thread Ĺ on the end of the screw A.

page_text: 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, the combination with a plate or fitting adapted to be
secured to the bottom sash, of a block hinged or pivotted to said plate or fitting in a
suitable manner to allow the sash screw mounted in said block to be placed in
a vertical position or approximately vertical position clear of the top sash when
disconnected therefrom, substantially as herein shown and described.
2. In a screw sash fastener, the combination with a plate or fitting adapted to be
secured to the bottom sash, of a block pivotted thereto and provided with a hole to
hold the sash screw the periphery of the said hole being cut by the rivet by which the
said block is pivotted, and a sash screw provided with an enlarged end adapted to
engage with said rivet and prevent said screw being withdrawn from said block,
substantially as herein shown and described.
DRACUP & NOWELL,
Bradford, Agents.