IMPROVEMENTS IN FASTENINGS FOR WINDOW SHUTTERS
Year: 1856

page_text: This Invention received Provisional Protection, out notice to proceed
application for Letters Patent was not given within the time prescribed
by the Act.)
PROVISIONAL SPECIFICATION left by Daniel Webster Hayden at the
Office of the Commissioners of Patents, with his Petition, on the 9th
July 1856.
I, DANIEL WEBSTER HAYDEN, of Glasgow, in the County of Lanark, North
Britain, Engineer. do hereby declare the nature of the said Invention for
"IMPROVEMENTS IN FASTENINGS FOR WINDOW SHUTTERS," to be as follows:-
This Invention relates to a simple and effective plan of securing and
fastening the window shutters of shops, and houses, and other buildings,
particularly of. the larger class.
Instead of loose and complex fastenings, the present Invention provides for
the obtainment of complete security by means of details, which are always
retained in their place, and can never be mislaid or lost, whilst the acts of
fastening and unfastening are simple and almost automatic. The external
holding bar of the shutter is jointed or otherwise fitted by one end to the wall
or other stationary part of the building, and to secure the other or free end of
this bar to retain the shutter, there is fitted up inside the wall or window frame,
at the part corresponding to the holding position of the bar, a grooved piece
of metal, having a sliding catch or detent piece set within it to hold the
actual fastening pin. The grooved holding piece is screwed or otherwise
immoveably attached to the inner face of the shop wall or window frame,
and it has-upon it a short embracing dovetailed. or. square surfaced-piece.

page_text: This embracing piece serves to retain the vertically sliding detent piece,
which has its edges formed to suit those of the recess containing it.
The detent is passed in from below, and it is stopped from rising too
far by a flange upon the staionary piece which carries it. The lower end
of the detent is notched to fit the annularly grooved end of the holding
pin, which is passed through the wall or window frame from the outside,
and through a hole in the staionary piece for that purpose. A short blade
or other spring is also attached to the bottom of the stationary piece, to press
by its upper free end against the inner protruded end of the holding pin.
When the bar is to be adjusted for fastening up the shutter, the pin being
passed into its hole from without, its inner end presses against the spring and
relieves the detent, which then falls, and its notched end drops upon the
annular groove in the pin, and retains the parts with perfect security. When
the shutter is to be unfastened, all that the inmate of the shop has to do is to
lift up the detent and release the pin, which is then pressed slightly outwards
by the spring, the upper end of which latter falls into the recessed end of the
detent and prevents it from falling. The holding pin may either be loosely
fitted to the end of the fastening bar, so as to be always with it, or it may be
quite independent of the bar, being replaced in the retaining hole after each
time that the bar is removed and the shutters opened.
For the convenience of shop inmates, a cord and pulley arrangement may
be attached for enabling the operator to shift the detents without being obliged
to go into the window for that purpose.