Year: 1886

page_text: We RICHARD NORMAN SHAW of 29 Bloomsbury Square in the County of
Middlesex Royal Academician and WILLIAM PHILIPPS WENHAM of Wenham and
Waters Limited of Paragon Works, Croydon, Surrey, Manufacturers 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 invention relates to iron casements adapted for holding sheet or leaded
glass, such casements being set in rebates formed in the stone or woodwork of the
window opening. Usually such casements are hinged upon the frame which is set
in the rebates, left in the window. The disadvantage of this arrangement is that
a slight settlement of the building will distort the frame and cause the casement to
"bite" in it or to leave openings that will admit the rain and air. Our invention
consists in a casement and framework formed separately and so arranged as to be
practically air and rain tight, the construction being adapted also to ventilators
placed over doorways, windows and in other places. To clearly explain the nature
of our invention reference is made to the accompanying drawings in which-
Fig. 1 is a horizontal section of the iron casement and frame set in a wooden
framework or opening.
Fig. 2 is a vertical section of same.
Fig. 3 is a small perspective view of the complete casement.
Fig. 4 is a horizontal section of a portion of the casement and frame set in a stone
jamb or mullion and
Fig. 5 is a vertical section showing our invention adapted to a centrally hung
ventilator.
The frame of the window or ventilator is formed by adjusting and screwing to the
woodwork, the frame a. The edges of this frame project beyond the face of the
rebate, and are bevelled as shown leaving a throating or channel around the frame.
The casement or ventilator A is hung upon hinges b, set in the framework and
consists of a flat bar of metal having a rib c, to receive the glass d. When closed
the flat portion of the bar is brought up against the bevelled edge of the metal slips.
The formation of these edges will entirely prevent rain or water being forced or
drawn by capillary attraction between them and the casement as is the case when
the casement closes against a flat edged bar. As shown in Figs. 1, 2 and 3 the

page_text: bevelled slips are screwed to the woodwork of the window, but where a stone jamb
is employed we prefer to embed the screw in a gutta-percha plug e formed in an
opening in the stone-work, and in this case the hinge b is formed by a gun metal
lug f, which is placed in an opening in the stone-work, and run round with lead to
hold it in position. The ventilator shown in Fig. 5 is centrally hung on hinges in
the stone or woodwork of the framing and closes against the bevelled strips a,
which in the lower half of the ventilator are placed in the opposite direction to
those on the upper, this being the preferred arrangement for centrally hung
ventilators.
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―
The casement or ventilator A, hinged to the stone or wood work of the jamb
adapted to close against and in combination with the bevelled frame a, which is
separately attached to the jamb, substantially as described and for the purposes
set forth.