CERTAIN IMPROVEMENTS IN WINDOW SHUTTERS, WHICH IMPROVEMENTS MAY ALSO BE APPLIED TO OTHER USEFUL PURPOSES
Year: 1836

page_text: TO ALL TO WHOM THESE PRESENTS SHALL COME, I, Joseph
BUNNETT, of Newington Causeway, in the Borough of Southward, Window
Blind Maker, send greeting.
WHEREAS His present most Excellent Majesty King William the Fourth,
by His Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Eighteenth day of June, in the sixth year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
Joseph Bunnett, His especial licence, full power, sole privilege and authority,
that I, the said Joseph Bunnett, my exors, adiñors, and assigns, or such
others as I, the said Joseph Bunnett, my exors, adññors, or assigns, should at
any time agree with, and no others, from time to time and at all times
during the term of years therein expressed, should and lawfully might make,
use, exercise, and vend, within England, Wales, and the Town of Berwick-
upon-Tweed, my Invention of "CERTAIN IMPROVEMENTS IN WINDOW SHUTTERS,
WHICH IMPROVEMENTS MAY ALSO BE APPLIED TO OTHER USEFUL PURPOSES;" in which
said Letters Patent is contained a proviso, that I, the said Joseph Bunnett,
shall cause a particular description of the nature of my said Invention, and in
what manner the same is to be performed, to be inrolled in His said
Majesty's High Court of Chancery within six calendar months next and
immediately after the date of the said in part recited Letters Patent, as in
and by the same, reference being thereunto had, will more fully and at large
annear

page_text: NOW KNOW YE, that in compliance with the said proviso, I, the said
Joseph Bunnett, do hereby declare the nature of my Invention, and the
manner in which the same is to be performed, are fully described and
ascertained in and by the following statement thereof, reference being had to
the Drawing hereunto annexed, and to the figures and letters marked thereon,
that is to say:-
My Invention relates to the construction of safety, iron, or other metal
window shutters, which are also applicable as the shutters or covers of safe
closets and other places requiring a secure covering and fastening.
DESCRIPTION OF THE DRAWING.
Figure 1 represents a window having a metal shutter constructed according
to my Invention; Figure 2 is a section of the window and shutter, shewing a
mode of raising and lowering the shutter; Figure 3 is a view of the inside of
a window with some of the parts or wood framing removed, in order to shew
the parts which would otherwise be hid; Figure 4 is a plan in section of the
window, shewing the fastenings of the shutter when down; Figure 5 is a back
view of a portion of the shutter; Figure 6 is a like portion of the front view
of the shutter; Figure 7 is an edge view; and Figure 8 is a flat view of a
piece of metal cut for forming the hinges by which the various narrow plates
or strips of metal are joined. Figures 5, 6, 7, and 8 being on an enlarged
scale, and for window shutters are full size, according to my general mode of
making, but the same may be varied in each of these Figures. The same
letters of reference indicate similar parts.
a, a, a, are a series of narrow strips or plates of metal, which are connected
together by the hinges b, b; and such is the nature of my Invention that the
shutter, when formed, consists of a series of strips or narrow plates of metal
(generally iron), which partially overlap each other and entirely conceal the
hinges, there being no portion of such strips or narrow plates cut away at the
edges at those places where the knuckle of the hinges come, which is the case
in similar metal shutters heretofore constructed, hence it will be evident that
much saving will take place in the constructing of metal safety shutters of this
description, and a great advantage will be obtained from the circumstance that
the place where the hinges are cannot be seen on the outside of the house or
other place where shutters of this description are employed, and will thus give
additional safety, as the hinges are not liable to be cut, nor can the knuckle
pins of the hinges be removed from the outside. Figure 8 shews a plan of a
piece of iron or other suitable metal, cut by a fly-press or other suitable means,
for making the hinges for this description of shutter, and the two ends being

page_text: bent over at the dotted lines; the parts c, c, form knuckles of the hinges, as is
clearly shewn in Figure 7; and the hinges are connected by pins passing
through the parts c and rivetted at the ends; and the knuckles or parts c of
each hinge being bent in opposite directions, so that the central axis of the
pins which pass through at c, c, are not in the same lines, and allows the
plates or strips of metal a, a, to overlap, and at the same time the combined
shutter is capable of bending over or winding around a roller, without tho
necessity of cutting away portions of the edges of the strips or plates a, a,
where the knuckles of the hinges come, and it is the application of such
construction of binges, in combination with the absence of cutting away the
edges of the plates or strips, as above-mentioned, and allowing the plates a, a,
to overlap, which forms the first part of my improvements; but I do disclaim
the hinges themselves when combined under other circumstances, and also in
their separate condition.
Now, it will be evident that shutters of this description are suitable for
various purposes, such as safety closets and other purposes; as similar shutters,
but of a different construction have been already employed, I do not, therefore,
as the first part of my Invention, claim any novelty in application of such
shutters, but only in the mode of combining and constructing the narrow
strips or plates a, a, as above described.
I willow describe a mode of applying such shutters to windows. f is
roller, moving on axes turning in suitable bearings at each side of the window;
g is a toothed wheel on one end of the roller f. The shutter a, a, is affixed at
one end to the roller f, the hinges being on the inside of the shutter; h is an
axis or shaft moving in suitable bearings at each end, as is clearly shewn in
the various Figures; i, as a worm or screw, which takes into and drives the
wheel 9, and causes the roller f to revolve; and such is the well-known
property of the screw that it will stop in any position to which it is left; and
it is the application of an endless screw and toothed wheel to this description
of shutter, whether arranged according to my first-described improvement or
as heretofore made, which constitutes the second part of my Invention. j is a
bevelled toothed wheel affixed to the axis h, which is driven by another
bevelled toothed wheel k, affixed on the axis 1, as is clearly shewn in the
Drawing, such axis having a square end for the key m to turn it round
when desired to raise or lower the shutter. On the lower end of the shutter
a, a, is affixed the bar n, and the sides of the shutter move in grooves on each
side of the window or other opening which it is intended to cover or close; and
on the inside of the bar n is formed a recess, into which a spring bolt or bolts
euter when the shutter is down; or in place of having recesses in the bar the

page_text: spring bolt or bolts may come above the bar n, and this spring bolt or bolts
will remain shot into or over the bar n so long as the key m is not on the
axis by the following contrivance :-o is a small bent lever moving on the
axis at p; the tail 9 of the lever o rest against the axis
when the key is not
on that axis; the other end of the lever o rests against the lever r, which
moves on an axis at s, and is constantly pressed on by the spring t, or it may
be a spiral spring. To the other end of the lever r is attached the bolt v, which
is at all times pressed into or over the bar n so long as the key is not on the
axis ; hence, when the shutter has been closed down the bolt cannot be drawn
out without putting on the key or forcibly drawing back the end of the lever o,
but so soon as the key is forced on the axis 7, the bolt will be withdrawn from
the bar n, and the shutter may be wound up; and the connecting of the bolts
to this description of shutters with the instrument which winds the shutters
constitutes the third part of my Invention.
Having thus described the nature of my Invention, and the manner of
carrying the same into effect, I would remark that I lay no claim to the
various parts separately, and the shutter may evidently be varied to suit the
opening or place it is intended to cover; I do not, therefore, confine myself to
the precise arrangements here shewn, but do only confine my claim of Invention
to the three particular improvements as above described.
In witness whereof, I, the said Joseph Bunnett, have hereunto set my
hand and seal, this Seventeenth day of December, in the year of our
Lord One thousand eight hundred and thirty-six.