Improvements in Window Stops or Fasteners.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Window Stops or Fasteners.
We, FRANK RANDOLPH MULLINGS PHELPS, of 86, Caroline Street, Manufacturer,
and PHILIP DAW, of 14, Louisa Street, Engineer, both in the City of Birmingham,
do hereby declare the nature of this invention to be as follows:-
This invention relates to the manner in which we construct a casement stop or
fastener whereby a hinged window can be readily secured in the required position.
We construct a stop or fastener in accordance with our invention from a brass
cased or other tube or rod, pivotted at one end to a lug or bracket secured to the
window frame, and having a suitable handle part formed or attached to the
opposite end. The brass cased or other tube or rod passes through a swivelling
guide attached to the casement, and also through the eye of a clipping piece
carried between the jaws of the guide. The clipping piece is provided with a
pair of shoulders or rubbing surfaces which work upon the peripheries of the
circular jaws or bosses of the guide.
The centre of the eye or hole through the clipping piece is made eccentric
with the shoulders or rubbing surfaces in such a manner that when the handle
part is depressed the tube or rod forming the stem of the stop or fastener can be
moved in either direction through the guide and clipping piece, and thus the
window can be opened to the desired extent. But when the handle of the
clipping piece is raised the eccentricity of the eye with the shoulders or rubbing
surfaces, causes the latter to bind upon the guide and thus by preventing any
further movement of the stem to effectually secure or fasten the window.
When the window is completely closed the stem of the stop or fastener will
be parallel with the window, and thus cause no obstruction, the pivotted joint and
swivelling guide permitting of the necessary movement to enable it to be placed
in such position.
Dated this 7th day of April 1897.
Wow Stops or Fasteners.
We, FRANK RANDOLPH MULLINGS PHELPS, of 86, Caroline Street, Manufacturer,
and PHILIP DAw, of 14, Louisa Street, Engineer, both of the City of Birming-
ham, do hereby declare the nature of this invention and in what manner the same
[Price 8d.]

page_text: is to be performed, to be particularly described and ascertained in and by the
following statement:-
1
This invention refers to the kind of long arm window fasteners known in trade
as casement stays, which are employed to hold a hinged sash or casement in any
required position.
In constructing our improved casement stay we use the ordinary backplate with
double knuckle and attach pivottally thereto a tube or rod terminating in the
usual knob.
The tube or rod passes through a special guide and fastening which is the
chief characteristic of our invention.
This fastening consists of a small standard pivotted to a plate of the ordinary
kind, which standard has a double knuckle on top, that is to say it is forked,
with space between the forks or knuckles for a small eccentric disc to work in.
This eccentric disc has a shouldered knob at one end. Both disc and knuckle
have holes large enough for the tube or rod to pass through, but the hole in the
disc is adjustable so as to become eccentric to those in the knuckle.
The effect of this arrangement is that when the knob of the disc is held
upright, the three holes are concentric, and the rod or tube passes freely through,
but if the knob is depressed, its shoulder bearing on the exterior surfaces of
the knuckle which are of varying thicknesses, causes the holes to become relatively
eccentric. This makes the disc lock or engage with the rod or tube and hold it
in any position desired.
We will now describe the invention with reference to the accompanying drawings
in which :-
Fig. 1, shows a plan of the casement stay attached to a window casement when
the latter is closed.
Fig. 2 shows an elevation of same.
Fig. 2 shews a side elevation of the standard d.
Fig. 3 shows a plan of the casement stay and sash open.
Fig. 4 shows an enlarged side elevation of the eccentric standard.
a is the frame of the casement attached to which (by the usual knuckle or fork
joint b) is the stay rod c. This latter passes through a short vertical standard d
which is capable of rotating in a base plate . The standard d is forked towards
its upper end, to receive a disc e provided with a knob for convenient handling.
Both of the arms of the forked portion of the standard are bored eccentrically to
receive the stay rod c, which also passes through the disc e.
Therefore when
the disc and knob are in a vertical position, the stay rod is free to slide but
when turned sideways or depressed the eccentricity of the holes through which
the stay rod passes will cause the underside of the shoulders of the knob of the
disc e to bind tightly against the sides of the forked portion of the vertical
standard. The stay rod is terminated by a knob to limit its travel.
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 is:-
A window fastener or casement stay consisting of a pivotted arm and a swivelled
guide or fastener in which a disc is caused to become eccentric and lock the said
arm in any desired position, as herein described and set forth.
75
71- 01
CT1000
S. S. BROMHEAD,
Agent for Applicants, 171, Queen Victoria Street, London.