Improvements in Fastenings for Doors, Windows, and other Moveable Articles.
Year: 1889

page_text: Date of Application, 16th Mar., 1889
Complete Specification Left, 16th Dec., 1889-Accepted, 8th Feb.,
1890
PROVISIONAL SPECIFICATION.
Improvements in Fastenings for Doors, Windows, and other
Moveable Articles.
Communicated to me from abroad by KARL HAAKE, of Hannover, in the Empire
of Germany.
I, ELLIS PARR, of Oxford Street, in the County of Middlesex, Merchant, do hereby
declare, the nature of this invention to be as follows:-
This invention relates to that form of fastening in which, when it is applied for
example to a door, the latter is held sufficiently firmly in a closed or other desired
position, but can be opened or removed when desired by simply pressing it in either
direction.
The improved fastening can be applied to doors of all kinds, windows, hinged
desks, or lids or covers of pianos or other articles. It consists of a plate of suitable
size and thickness which is screwed or otherwise fastened to the edge of the door or
other object which is to be held, or to the sill or frame against which the door is to be
held. The plate has a central rectangular aperture through it, the end edges of which
are turned in at the back for a short distance at right angles. Into this aperture is
fitted freely from the back, a bolt preferably formed from brass or other sheet metal
stamped to the shape (in end view) of a wedge the inclined sides of which (preferably
slightly curved) meet at an angle which projects in front through the aperture. In
order to limit the extent to which the angular bolt so projects, through the aperture,
its two longitudinal edges at the base of the wedge are made somewhat longer than
the aperture so that their ends form stops against the back of the plate. Across these
two longitudinal edges is fitted a transverse pin or wire the ends of which fit in
notches or holes in the centre of the length of the longitudinal edges, and round this
pin or wire is coiled an elastic spring of hard brass wire or other suitable material
the two ends of which are passed freely through holes in the turned in edges of the
plate at the ends of the aperture first described.
The spring so formed and arranged keeps the wedge shaped bolt steadily pressed
outward through the aperture, but allows it to yield to pressure upon either side
tending to force it back into the aperture.
A suitable opening is made in the edge of the door frame or other place into which
the bolt is to fit to hold the door closed or in other desired position, and is preferably
covered by a metal friction plate provided with a similar opening.
If the door be closed, from either side, the angular side of the bolt is pressed back
by it until its point comes opposite to the opening in the frame into which it enters
by the pressure of the spring described, which holds it there sufficiently firmly. By
pushing upon the door in either direction, the wedge shaped bolt is pushed back
through the aperture and the door is readily opened.
A sliding or other bolt or lock may be applied to the inside of the plate, and
operated by a knob or handle outside, so that when the wedge bolt is projecting, it
can be fastened so as to prevent it froin retreating back through the aperture in the
plate, and in this position the door is locked until the sliding bolt or lock is
released.
The pin or wire upon which the wire spring is coiled may have its ends reduced in
diameter where they fit into the notches, so as to prevent it from moving end ways,
and the details of the fastening described may be varied more or less as may be
found advisable according to the circumstances in which it is to be used.

page_text: It will be obvious that the improved, fastening can be applied to very many
purposes, and it is very simple, durable;.and-easily made, and is very cheap.
Dated this 15th day of March; 1889.
EDWARDS. & Co...
35, Southampton Buildings, London, Agents for the Applicant.
:
COMPLETE SPECIFICATION.
Improvements in Fastenings for Doors, Windows, and other
Moveable Articles.
A communication to me from abroad by KARL HAAKE, of Hannover, in the Empire
of Germany, Manufacturer.
.
I, ELLIS PARR, of Oxford Street, in the County of Middlesex, Merchant, 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 and accompanying drawing, (that is to say):
:-
This invention relates to that form of fastening in which, when it is applied for
example to a door, the latter is held sufficiently firmly in a closed or other desired
position, but can be opened or moved when desired by simply pressing it in either
direction.
The iniproved fastening can be applied to doors of all kinds, windows, hinged
desks, or lids or covers of pianos or other articles.
In the accompanying drawing which is in illustration of the invention, figure 1 is
a front view of the improved fastening. Figure 2 is a back view, and figure 3 a
section, and figure 4a section shewing the fastening pressed back. Figure 5 is an
end view, and figure 6 is a separate view of the bolt or catch. Figure 7 shews the
improved fastening attached to a door. The same letters of reference indicate the
same parts in the several figures.
The fastening consists of a plate a of suitable size and thickness which is screwed
or otherwise fastened to the edge of the door or other object which is to be held, or
to the sill or frame against which the door is to be held.
The plate a has a central rectangular aperture through it, the edges of which are
turned in at the back for a short distance at right angles at bb. Into this aperture
is fitted freely from the back, a bolt c preferably formed from brass or other sheet
metal stamped to the shape (in end view) of a wedge the inclined sides of which
(preferably slightly curved) meet at an angle which projects in front through the
aperture in the plate a. In order to limit the extent to which the angular bolt c so
projects through the aperture, its two longitudinal edges at the base of the wedge are
made somewhat longer at d d than the aperture, so that their ends form stops against
the back of the plate a as shewn. Across these two longitudinal edges is fitted a
transverse pin or wire e the ends of which fit in notches or holes in the centre of the
length of the longitudinal edges of the bolt c, and round this pin or wire is coiled an
elastic spring of hard brass wire or other suitable material the two ends of which
are passed freely through holes in the turned in edges b b of the plate a at the end of
the aperture first described.
The spring so formed and arranged keeps the wedge shaped bolt c steadily pressed
outward through the aperture in the plate a, but allows it to yield to pressure upon
either side tending to force it back into the aperture as shewn in figure 4.
A suitable opening is made in the edge of the door frame or other place into which
the bolt c is to fit to hold the door closed or in other desired position, and is preferably
covered by a metal friction plate provided with a similar opening:
If the door be closed, from either side, the angular side of the bolt c is pressed' back
by it until its point comes opposite to the opening in the frame into which it enters.
by the pressure of the spring which holds it there sufficiently firmly. By pushing.

page_text: open the door in either direction the wedge shaped bolt c is pushed back through the
aperture and the door is readily opened.
An ordinary sliding or other bolt or lock not shewn in the drawing, may be applied
to the inside of the plate, and operated by a knob or handle outside, so that when
the wedge bolt c is projecting, it can be fastened so as to prevent it from retreating
back through the aperture in the plate a, and in this position the door is locked until
the sliding bolt or lock is released. An arrangement for this purpose is illustrated in
dotted lines in Figure 3, 9 being an excentric or cam which when turned into the
position g' prevents the bolt e from being forced back.
The pin or wire e upon which the wire spring is coiled may have its ends reduced
in diameter where they fit into the notches, in the edges of the bolt c so as to prevent
it from moving end ways, and the details of the fastening described may be varied
more or less as may be found advisable according to the circumstances in which it is
to be used.
It will be obvious that the improved fastening can be applied to very many purposes,
and it is very simple, durable, and easily made, and is very cheap.
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. The combination of the plate a, wedge bolt c, and spring f, substantially as
described and shown.
2. The combination of the plate a, turned in edges b, wedge bolt c having projecting
ends d, pin e, and spring f, all arranged and operating substantially in the manner
and for the purpose described and shewn in the drawing.
3. In combination with the fastening claimed in claims 1 and 2, a bolt or lock by
which the wedge bolt can be prevented when desired from being pushed back,
substantially as and for the purpose described.
Dated this 15th day of December 1889.
EDWARDS & Co.,
35, Southampton Buildings, London, Agents for the Patentee.