Casement Fasteners.
Year: 1887

page_text: Date of Application, 12th Aug., 1887
Complete Left, 12th May, 1888
Complete Accepted, 15th June, 1888
or Casement Fasteners.
We ALFRED EDWARD HARRIS and HOWARD JOSEPH LUCKOOK trading as
A. E. Harris & Co. of 60 Graham Street Birmingham Brassfounders and JOSEPH
LUCKOCK of Albany Road Harborne Tool Maker do hereby declare the nature of our
said invention to be as follows:-
The object of this our Invention is to produce a window sash or casement fastener
which shall be simple in its construction and at the same time be capable of more
securely locking the two sashes of the window or the casement to which it is applied
than can be done by the ordinary spring fastening in common use.
The sash or casement fastener to which our Invention is applied consists sub-
stantially of the following arrangement of parts. A plate is screwed to the rail of
the upper or outside sash having a back and turnover piece and between the plate
and this turnover piece a radial arm somewhat constructed as hitherto works under a
pin or common centre. A second plate is secured to the rail of the lower or inside sash
and carries what is known as the circle plate being the plate upon which the radial
arm traverses and the fastening is effected, by the power given to the knob at the
end of the arm in the usual manner.
We will describe our Invention in combination with the above named parts, the
boss which is one end of the radial arm and which moves upon the pin as above
setforth we construct with a projecting pin and to the back plate which is affixed to
the rail of the upper sash we arrange a lamina spring (steel by preference) held by a
rivet at the one end farthest from the boss but is bent against the said boss so that
when the radial arm is back that is the window is unfastened the power of the spring
keeps it in that position. At the other end of spring which projects is an indicatory
tud or thumb piece and near this an aperture the object of which is that when
7

page_text: fastening the window by means of the knob which moves the radial arm the projecting
pin presses the spring until it reaches the aperture when it engages therein snapping
or indicating that it is securely locked.
In some cases we may construct the boss of the radial arm with a projection
(as a knuckle joint) in this case the spring would be secured as before stated but
would be hent or indented sufficiently to receive and engage the projection and thus
afford a secure fastening or the boss may be constructed as above described and the
spring flat as first named but would be provided with a strip of metal rivetted thereto
sufficient to engage the projection or knucklo.."
The above describes our Invention firmly locked but the mode of unlocking in each
case is the same and is effected thus, the thumb of the left hand compressing the
indicating stud releases the spring and allows the radial arm to be moved back to its
original position by means of the right hand.
Our Invention may be carried out in sheet metal or cast brass, or malleable iron.
Dated 12th August 1887
THOMAS KENDRICK,
Agent for Applicants.

page_text: or Casement Fasteners.
We ALFRED EDWARD HARRIS and HOWARD JOSEPH LUCкOCK trading as
A. E. Harris & Co. of 60 Graham Street Birmingham Brassfounders, and JOSEPH
LUCKOOK of Albany Road Harborne, Tool Maker, do hereby declare the nature of
our said invention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement :-
The object of this our invention is to produce a Window Sash or Casement Fastener
which shall be simple in its construction and at the same time be capable of more
securely locking the two sashes of the window, or the casement to which it is applied,
than can be done by the ordinary spring fastening in common use.
The Sash or Casement fastener to which our invention is applied consists sub-
stantially of the following arrangement of parts. A plate is screwed to the rail of
the upper or outside sash having a back and turnover piece, and between the plate
and this turnover piece a radial arm somewhat constructed as hitherto, works upon a
pin or common centre. A second plate is screwed to the rail of the lower or inside
Sash and carries what is known as the circle plate, being the plate upon which the
radial arm traverses and the fastening is effected by the power given to the knob at
the end of the arm in the usual manner.
We will describe our invention in combination with the above named parts; tho
boss which is one end of the radial arm, and which moves upon the pin as above set
forth, we construct with a projecting pin, and to the back plate which is, affixed
to the rail of the upper sash we arrange a lamina spring (steel by preference) held by
a rivet at the one end farthest from the boss but is bent against the said boss so that
when the radial arm is back that is the window is unfastened, the power of the spring
keeps it in that position. At the other end of spring, which projects, is an indicatory
stud or thumb piece, and near this an aperture, the object of which is that when
fastening the window by means of the knob, which moves the radial arm, the
projecting pin presses the spring until it reaches the aperture, when it engages
therein, snapping or indicating that it is securely locked.
In some cases we may construct the boss of the radial arm with a projection
(as a knuckle joint); in this case the spring would be secured as before stated but
would be bent or indented sufficiently to receive and engage the projection, and thus
afford a secure fastening; or the boss may be constructed as above described and the
spring flat as first named, but would be provided with a strip of metal rivetted thereto,
sufficient to engage the projection or knuckle.
The above describes our invention firmly locked, but the mode of unlocking in
each case is the same, and is effected thus ;-the thumb of the left hand compressing
the indicating stud releases the spring and allows the radial arm to be moved back to
its original position by means of the right hand.
Our invention may be carried out in sheet metal, or cast brass, or malleable iron.

page_text: And in order that this our said invention may be more thoroughly understood we
have prepared the accompanying sheet of drawings by the aid of which we will
proceed more particularly to describe it. Similar letters of reference denote similar
parts in each figure where they occur.
Fig. 1 is a view in elevation of our improved window fastening.
Fig. 2 is a plan view of same.
Fig. 3 one part of same detached.
a is the plate screwed at b, to the rail c, of the upper or outside sash of the
window. d is the back, with turnover piece. e is the radial arm working upon the
pin or centre f g is also a plate screwed to the rail h of the lower or inside sash,
carrying the circle plate i, and j is the knob by means of which e is actuated to engage
with and bring the two sashes together. At the end of e is the boss k with the
projecting pin or part l. m is the lamina spring which is fastened to d by means of
the rivet n.
In Figs. 2 and 3 we shew this spring m, against the boss k, and is thus kept in
position when the window is unfastened. o is the indicating stud or thumb piece.
P, is the aperture. Fig. 3 shews m the spring indented at 9; this would be the case
if the boss k was formed as a knuckle joint, or as an alternative we may employ in
lieu of the indention a strip of metal rivetted to m which would answer as well.
In Figs. 1, 2, 3 the radial arm e is in the position when the window is unfastened,
that is to say, the upper sash can be lowered or the lower sash raised the projecting
pin being free from the aperture p, but by imparting a rotary movement to the
radial arm e by means of the knob, the boss k will compress the spring m, until 1,
the projecting pin reaches the aperture p, engaging therein the radial arme traversing
the circle plate i.
A fastening is thus effected which cannot be interfered with or released from the
outside without difficulty. The unfastening is only effected by applying pressure to o
the stud, or thumb-piece which causes the spring m to yield and releases the projecting
pin or part from the aperture p or indention q.
We would observe in conclusion that wo do not limit ourselves to the precise details
herein given, and set forth, and shewn on the accompanying sheet of drawings but
that we hold ourselves at liberty to alter or modify the same without departing
essentially from the principle of this our said invention.
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what
we claim is :-
1st. The construction of the radial arm e, provided with boss k, and projecting
pin or part 1, acting with the spring m, having the aperture p, or indention q,
into which it engages and released by o, as hereinbefore described and set forth.
2nd. The combination of the said parts as herein before described and set forth and
illustrated on the accompanying sheet of drawings the whole forming "Improvements
in window fastenings commonly known as Sash or Casement fasteners."
Dated this tall.
1000
THOS. KENDRICK,
Agent for Applicants.