IMPROVEMENTS IN WINDOW FASTENINGS
Year: 1888

page_text: We, HENRY LOFTUS MONRO. GOODRIDGE of 80 Pattison Road Plumstead Kent
Engineer, and SYDNEY THOMAS FAIRLAND of 4 The Common Woolwich Kent
Surgeon, do hereby declare the nature of our invention for "IMPROVEMENTS IN
WINDOW FASTENINGS."
"
This invention or apparatus is an improvement on the means of securing Window
sashes as at present in use, being automatic in character and simple in design.
The component parts of it consist. Firstly of a spiral spring working upon a
plunger within a hollow frame. Secondly of a socket, to receive the end of the
plunger which is guided to it by an inclined plane.
:
By means of this invention, the window sashes are locked without manual inter-
ference immediately they are closed; thus preventing the possibility of the window-
sash being left unlocked by a careless or negligent person.
The special improvements claimed for this invention are as follows:
1st. It is self locking: thereby diminishing work and lessening responsibility.
2nd. It is economical in character costing no more than those at present in
use.
3rd. It is more durable, inasmuch as the working parts being enclosed no damp
or dirt can affect them.
4th. In the event of repair being required it can be effected for an infinitisimal
sum without the necessity for skilled labour.
Datal thin Tranter fifth day of February 1888

page_text: We HENRY LOFTUS MONRO GOODRIDGE of 80 Pattison Road Plumstead Kent
Engineer and SYDNEY THOMAS FAIRLAND of 4 The Common Woolwich Kent,
Surgeon do hereby declare the nature of our invention for "IMPROVEMENTS IN
WINDOW FASTENINGS" 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 :-
This invention consists of a male & female part; the male part consists of a
spiral spring working upon a plunger within a hollow frame or barrell, the plunger
extending a short distance beyond the end of the barrell enters a socket, provided
in the female portion which may be described as a continuation of the barrell of
the male portion, the end of the plunger may be fitted with a small roller to
facilitate its passage along the guide which is fixed to the upper border of the
female portion. The other end of the plunger is fitted with a knob or ring or other
means of drawing it out to release the parts. On either side of the front border
of the female portion, a wedge shaped guide extends outwards which, as the male
portion comes into position for locking, is enclosed by wings extending from the
posterior border of the barrell: As the sashes are brought into position they are
approximated together by the action of the wings upon the wedge shaped guides.
Referring to the drawings accompanying this specification C. represents the plunger
upon which the spiral spring works, within the hollow frame or barrel D, that portion
of the plunger C which projects beyond the barrel D enters a socket provided in
female portion G. to which it is guided by the projection F the other end of the
plunger is provided with a knob or ring A for the purpose of working the bolt.
On either side of the front horder of the female portion Gare the wedge-shaped
guides H, which as the two parts of the bolt coine into position for locking are em-
braced by the wings E extending from the posterior border of the male part D.
By this action the upper and lower sashes of a window to which the two parts of
this bolt are respectively affixed are approximated closely together.
Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we would have it understood that
we do not limit ourselves to the precise details above set forth, as they may be varied,
whilst retaining the essential features of the invention, and we declare that what we
claim is
1st. A window-fastener constructed combined and arranged to operate substantially
as hereinbefore described and shown on accompanying sheet of drawings.
2nd. A window fastener whereon there is employed wedge-shaped guides H, in
combination with wings E as described above.