Improvements in Window Fastenings Commonly known as Sash or Casement Fasteners.
Year: 1887

page_text: Date of Application, 12th Sept., 1887
Complete Specification Left, 11tn July, 1888
Complete Specification Accepted, 17th Aug., 1888
Improvements in Window Fastenings Commonly known as Sash
or Casement Fasteners.
I, EDWARD KIRBY, of 24 Holloway Head, Birmingham, Manager of Works, do
hereby declare the nature of my said invention to be as follows:-
The object of this my Invention is to produce a sash or casement fastener, that is
automatic in its action, novel and simple it its construction and at the same time
be capable of bringing and securing the two sashes of the window or casement in close
proximity excluding the dust and also the shaking or rattling of the said sashes and
the said fastening cannot be interfered with from the outside of the window.
I will describe my Invention as a fastener applied to the sashes of an ordinary
window which consists substantially of the following arrangement of parts.
I construct a case or box of a suitable shape or configuration the bottom or base
plate having extended ends provided with screw holes and by means of which it is
screwed to the rail of the inner or lower sash a plate forming a side with 3 guide
holes, two for inclined bolts and one between the bolts for the fastening or tightening
pin this said pin also passes through an aperture in a plate on the opposite side
being the front and is provided with a knob, and by means of which it is actuated
and are connected together by an arm U or similar shape, the bolts above described
are forced from and project through the two guide holes by the power of a helical
or other suitable spring fed upon the fastening or tightening pin, which is screwed
at its other end being increased in size thus forms a shoulder to withdraw the bolts
when desired, the whole is secreted by an ordinary covering.
The plate which I term the striking and bolt plate has also extended ends with
screw holes for securing to the rail of the upper and outer sash and is of sufficient
depth to receive the two bolts at or near each end while between the same is a hole
screwed interiorly to receive the screwed end of the fastening pin.

page_text: To practically illustrate the action taking the window to be opened the lower sash
raised by the withdrawing of the bolts by means of the knob, and desirous of closing
the same the lower sash is brought down the inclined parts of the bolts strike upon
the top of the bolt plate being repelled but returning to engage in the said plate
automatically a rotatory movement given to the knob engages the screwed end of
fastening pin in the screwed hole and both sashes are brought together and securely
locked.
I may construct the above in cast or stamped metal-plain or ornamental.

page_text: COMPLETE SPECIFICATION.
°
improvements in Window Fastenings Commonly known as Sash
or Oasement Fasteners.
I, EDWARD KIRBY of 24 Holloway Head, Birmingham, Manager of Works, 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 object of this my invention, is to produce a sash or casement fastener, that is
automatic in its action, novel and simple in its construction, and at the same time
capable of bringing and securing the two sashes of a window or casement in close
proximity, thereby excluding dust, and preventing the shaking and rattling of the
sashes; and further, the said fastening cannot be interfered with from the outside of a
window.
I will describe my invention as a fastener applied to the sashes of an ordinary
window, which consists substantially of the following arrangement of parts.
I construct a case or box of a suitable shape or configuration, the bottom or base
plate having extended ends provided with screw holes, and by means of which it is
secured to the rail of the inner and lower sash, while a staple plate forming a side to
the box, has three guide holes; two for inclined bolts, and one between the bolts, for
the fastening or tightening pin to screw into. This said pin which has a head, also
passes through an aperture in the box, on the opposite side.
The bolts above described, are forced from, and project through the two guide holes,
by the power of helical, or other suitable springs, disposed between a cross bar of a
sleeve surrounding the fastening or tightening pin, and the backs of the bolts.
The plate which I term the striking and bolt plate, has also extended ends, with
screw holes, for securing to the rail of the upper and outer sash, and is of sufficient
depth, to receive the two bolts at or near each end, while between the same, is a hole,
screwed interiorly, to receive the screwed end of the fastening pin.
Figure 1 represents in longitudinal vertical section, and figure 2 in side elevation,
an automatic working sash fastener, constructed and arranged, according to this
invention. The said fastener, is shown applied to the meeting rails of a top and
bottom sash, and in figure 1, the said sashes are shown closed, and fastened, whilst in
figure 2, the said sashes are shown open and unfastened, and with the fastener in the
position which it assumes, just before the meeting rails are brought together.
Figure 3 represents a horizontal section on the dotted lines A B figure 2, and
figure 4 represents a horizontal section on the dotted lines CD figure 1.
The same letters of reference indicate corresponding parts in the several figures of
the drawing.
a
is the box carrier of the fastener, with an attachment plate a', having extended
ends, by means of which, the said attachment plate and box carrier is secured to the
upper face of the top rail b, of a lower sash.

page_text: Sliding and working horizonally within the middle of the carrier box, is a fastener
stem C, provided at its outer end with a knob or turn c³, and at its other or inner end,
with an enlarged and wormed part c³, which screws within a like screw hole d, in the
middle of a double pocketed staple plate d, which is secured by extended ends d³, to
the lower meeting rail e, of the upper or outer sash.
ff, are two bolts, bevelled on their undersides, and connected together by a
bridge, while the fastener stem c, carries a cross bar and sleeve f; so that the
fastener stem and cross bar, and sleeve, slide inwardly and outwardly together, but
leaving the screwed stem fastener free to rotate, for the taking of its wormed end,
into the wormed socket or hole d³, of the other part of the fastener.
The bolts, which work through holes in the front of the framing of the box carrier,
take within pockets d, which are hooded on their top sides by slightly bevelled
off striking plates d³, upon the top side of which, the bevel undersides of the bolts f,
strike, on the meeting rails of the respective sashes coming together.
gg are coiled springs whose ends take their abutments against the inside of the
cross bar f, and the back of the bolt f; and it is by means of these said springs, that
the bolts are pressed home.
The action of the fastener is illustrated as follows.
If the window be opened as in figure 2, on the meeting rails of the sashes coming
together, the bevelled undersides of the bolts strike the striking plate do, of the staple
plate d, which causes the bolts to retreat rearwards within their enclosing casing,
until the top sides of the bolts come opposite the underside lower edges of the
striking plate, when the said bolts shoot outwards into the pockets, by the expansion
of the coiled springs, which were previously compressed by the forcing inwardly of
the bolts, as represented in the horizontal section figure 3.
The sashes being now brought together, and the bolts shot home into the the pockets
of the staple plate, the fastener stem c is rotated, when its wormed inner end screws
into the like interiorly wormed hole or socket d, thereby drawing and fixedly securing
the sashes together.
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,
First. Automatically fastening the meeting rails of the sashes of a window, by
bevel undersided bolts f, f, working in conjunction with a sliding and turning screw
ended fastener stem c, and cross bar and sleeve f³, as described and set forth.
Secondly. A sash or window fastener, consisting of sliding bolts f,f4, and sliding
rotating screw ended fastener stem c, c², c³, with cross bar and sleeve f², working
within a box or enclosed carrier a, a², and staple plate with striking plate, pocket and
screw hole d, d², d³, d, and d³ respectively; and which said parts are arranged and
work substantially as, and for the purpose as herein set forth.
Thirdly. The combination with automatic working bolts f, of a spring or springs g,
and a screw action fastener stem c, c², c³, with cross bar and sleeve f, as set forth.
Dated this Ninth day of June 1888
EDWARD KIRBY.
By Henry Skerrett,
Agent for Applicant.