An Improved Bolt or Fastening for Windows and for other similar purposes.
Year: 1889

page_text: Date of Application. 12th Dec., 1889
Complete Specification Left, 12th Sept., 1890-Accepted, 18th Oct., 1890
PROVISIONAL SPECIFICATION.
An Improved Bolt or Fastening for Windows and for other
similar purposes.
I ALLAN FRANCIS VIGERS of 62 Lincoln's Inn Fields London in the County,
of Middlesex Architect do hereby declare the nature of this invention to be as
follows:-
:-
The principal object of this invention is to construct a strong and reliable bolt .or
fastening for windows which shall afford security against burglars, and which may be,
so arranged as to allow of the window being opened sufficiently for ventilating purposes,
but not enough to allow any one to pass through. The same bolt or fastening may,
also be applied to doors for rooms or cupboards and for other similar purposes.
The fastening as applied to sash windows has some of the main features of ant
ordinary window fastening that is to say, it comprises two metal plates one secured to.
one sash and having a turn bolt and the other secured to the other sash and having a
socket or catch to hold the same, but with the following alterations and additions,
which constitute my invention.
In the first place I reverse the usual position of the two portions of the fastening,
and I fix the plate carrying the turn bolt on the lower sash, and that carrying the
socket or catch upon the upper sash.
The turn bolt instead of merely turning upon a pivot rivetted or secured to the plate
as usual, is made with parallel sides and so as to move horizontally through a slide
which is so mounted that it can revolve upon a vertical pin or stud fixed in the..
plate, so that the bolt has a double action first turning one quarter round with the
slide so as to bring it opposite to the socket, and then sliding horizontally across
the joint of the two sashes so as to enter the socket, the end of the bolt being.
slightly bevilled to facilitate such entrance.
The knob by which the bolt is turned and forced forward or drawn back passes.
through the bolt and its end is screwed, and there is a corresponding screwed-hole.
in the plate so that by turning the said knob the bolt can be firmly fixed.
The sliding motion of the bolt is limited by a slot working on a pin fixed in the
revolving slide; or by any other similar contrivance, and the turning motion of the.
same is limited to one quarter of a revolution by pins fixed in the plate, or otherwise.
The catch is made in the form of a rectangular socket fitted to receive the end.of.the.
sliding bolt.
If it be desired to allow the window to be opened for a certain limited space for
ventilation the fastening must be attached to the top of the lower sash, at one or both
sides, and the socket to the side of the upper sash, a plate with two sockets (say about.
four inches apart) being provided for that purpose so that the sash can be secured.
either shut or about four inches open, or if preferred the plate may be made with a slot,
of a similar length so as to allow of the window being moved up and down to a limited
extent but not sufficient to allow a person to pass through.
Dated this 11th day of December 1889.
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant.

page_text: COMPLETE SPECIFICATION.
An Improved Bolt or Fastening for Windows and for other
similar purposes.
I ALLAN FRANCIS VIGERS of 62 Lincoln's Inn Fields London in the County
of Middlesex, Architect 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 principal object of this invention is to construct a strong and reliable bolt or
fastening for windows which shall afford security against burglars, and which may
be so arranged as to allow of the window being opened sufficiently for ventilating
purposes, but not enough to allow any one to pass through. The same bolt or
fastening may also be applied to doors for rooms or cupboards and for other similar
purposes.
The fastening as applied to sash windows has some of the main features of an
ordinary window fastening that is to say, it comprises two metal plates one secured
to one sash and having a turn bolt, and the other secured to the other sash and
having a socket or catch to hold the same, but with the following alterations and
additions which constitute my invention, and which will be readily understood
from the following description on reference to the accompanying sheet of drawings
of which
Fig. 1 is a vertical section and Fig. 2 a plan view of so much of the sashes of a
window as is necessary to illustrate my invention.
Fig. 3 is a plan view of the plate A alone.
Fig. 4 is an elevation drawn to a smaller scale of part of a window.
Figs. 5, 6, and 7, shew detached parts hereafter referred to.
In the first place I reverse the usual position of the two portions of the fastening
and I fix the plate A, carrying the turn bolt E on the lower sash a and the plate B
carrying the socket or catch B¹ upon the upper sash b.
The turn bolt E instead of merely turning upon a pivot rivetted or secured to the
plate A as usual, is made with parallel sides, and so as to move horizontally through a
slide C which is so mounted that it can revolve upon a vertical pin or stud D fixed in
the plate A so that the bolt E has a double action, as indicated by the dotted lines on
Fig. 2 first turning one quarter round with the slide C so as to bring it opposite to the
socket B¹ and then sliding horizontally across the joint of the two sashes a and b so as
to enter the socket B' the end of the bolt E being slightly bevilled at S to facilitate
such entrance.
The knob G by which the bolt is turned and forced forward or drawn back passes
through the bolt E see Fig. 1 and its end is screwed, and there is a corresponding
screwed hole J in the plate A, so that by turning the said knob G the bolt can
be firmly fixed.
The sliding motion of the bolt is limited by a slot working on a pin fixed in the
revolving slide; or by any other similar contrivance, and the turning motion of the
same is limited to one quarter of a revolution by a pin P or pins fixed in the plates A
or otherwise.
A catch is made in the form of a rectangular socket B₁ fitted to receive the end of
the sliding bolt E.
If it be desired to allow the window to be opened for a certain limited space
for ventilation the fastening must be attached to the top of the lower sash à at
one or both sides and the socket B¹ to the side of the upper sash b (see Figs. 4 and 5)
a plate B2 with two sockets B₁ (say about four inches apart) being provided for that
purpose so that the sash can be secured either shut or about four inches open, or
separate sockets may be let into the upper sash as shown detached at Fig. 6 or if
preferred the plate may be made with a slot of a similar length so as to allow of the
window being moved up and down to a limited extent but not sufficient to allow a
person to pass through (as shown at Fig. 7).

page_text: 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. An improved fastening for locking windows and for other similar purposes
consisting of a bolt capable of both turning on a pivot and sliding in a socket fixed on
one sash or part and provided with a catch on the other sash or part for locking it.
thereto and a screw or other equivalent bolt for locking the sliding bolt in position on
the first sash or part when pushed into the catch on the second sash or part substantially
as hereinbefore described and illustrated by the drawings annexed.
2. The combination with a sliding and turning bolt of a series of sockets as and for
the purposes described with reference to Figs. 4, 5 and 6.
3. The combination with a sliding and turning bolt of a slotted plate or elongated
socket as and for the purposes described with reference to Fig. 7.
Dated this 11th day of Cantomboy 1900
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant.
GEORGE DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicant.