IMPROVEMENTS IN IRON GRILLS FOR PROTECTING SHOP FRONTS, AND IN THE METHOD OF MOUNTING, FIXING, AND PACKING THEM AWAY." PROVISIONAL SPECIFICATION
Year: 1880

page_text: LETTERS PATENT to Harry Wilson Perrers, of 13, Downshire Hill, Hampstead,
in the County of Middlesex, Surveyor, for an Invention of "IMPROVEMENTS
IN IRON GRILLS FOR PROTECTING SHOP FRONTS, AND IN THE METHOD OF
MOUNTING, FIXING, AND PACKING THEM AWAY."
PROVISIONAL SPECIFICATION left by the said Harry Wilson Perrers at
the Office of the Commissioners of Patents on the 28th August 1880.
HARRY WILSON PERRERS, of 13, Downshire Hill, Hampstead, in the County
of Middlesex, Surveyor. "IMPROVEMENTS IN IRON GRILLS FOR PROTECTING
SHOP FRONTS, AND IN THE METHOD OF MOUNTING, FIXING, AND PACKING
THEM AWAY."
This Invention of improvements in iron grills for protecting shop fronts, and in
the method of mounting, fixing, and packing them away, relates to those iron
grills used to protect shop fronts, and is intended to make them more easily fixed,
more securely fastened, and more conveniently stored away when not used in the
day time.
In the level of the stall plate as usually constructed for shop fronts, and under
the stall board I construct horizontally or slightly inclined or shallow shelf or
drawer space within which the grill when not in use slides horizontally. The grill
itself in its most simple form consists of two parts hinged like a carpenters' rule or
in some equivalent manner. Supposing as an illustration that the grill required for
protection is 6 feet by 3 feet in height, then the other portion forming the fastening
would be 1 foot by 6 feet, and the two parts being hinged together on the width
of 6 feet; the two parts combined would open to an area of 6 feet by 4 feet, and to
slide in the shallow shelf in the way proposed, it would be necessary that the
shelf space should be 4 feet deep; in this the grill when not in use in the day time
is thrust, the opening being covered by the stall plate or otherwise. When it is
required to protect the window, the compound grill is brought forward about 3 feet
6 inches, there remains therefore 6 inches in the shallow space supporting and
holding the grill. The 3 feet portion is now turned up vertically and inclined towards
the sash bars, and the points or uppermost portions of the grill at suitable places
are now just long enough to enter under strong eyes or fastenings in the sash bars or

page_text: other suitable portions of the shop front. In this position it is evident that if the
lower portion of the grill be thrust inwardly into the shelf space, the front portion
of the grill as it becomes vertical will have its points inserted into the eyes named,
in other words the hypothenuse of the base being longer than the perpendicular of
the right angle, the grill enters into the eyes. Suitable catches or bolts are arranged
to seize the now short horizontal part as it is thrust in, and the grill becomes
locked without any attention by the man, and will remain so till it is released,
which can be so contrived as to be only accomplished from the interior of the shop
or otherwise. The grill may slide on rollers if needed. In carrying out the above
principles for storing the grill when not in use, and the fixing by the hinged joint,
various sizes and places will require some modifications; the shallow space will have
to be deepened, or it may have to be inclined to suit varying conditions. The grill
itself may be require to be folded up upon itself when the stall board is too shallow in
depth, so that it may be stowed away, and where the lower part of the shop facia
below the stall board requires protection, the grill and the horizontal portion will
take the form of the letter T, folding up in such manner as to preserve the principle
on which the grill is fastened, by enabling the grill to go into the horizontal space.
The inner portion of the grill, that is, the horizontal portions, may be plain bars
sliding in grooves or ways, and may be caught either by catches or bolts, or any
suitable contrivance. It is also evident that the principle of fastening thus adopted
may be applied to grills entering vertically into recesses, such as hollow mullions
of the windows or sides of the facia, and the same method of fastening applied to
them.

page_text: Figure 3, a catch for locking the grill.
This Invention of improvements in iron grills for protecting shop fronts, and in
the method of mounting, fixing, and packing them away, relates to those iron
grills used to protect shop fronts, and is intended to make them more easily
fixed, more securely fastened, and more conveniently stored away when not used in
the day-time.
In the level of the stall plate as usually constructed for shop fronts, and under
the stall board or show board a, I construct horizontally a slightly inclined shallow
shelf or drawer within which the grill o when not in use slides horizontally. The
grill itself in its most simple form consists of two parts hinged like a carpenter's
rule, or in some equivalent manner. Supposing as an illustration that the grill
required for protection is 6 feet by 3 feet in height, then the other portion forming
the fastening would be 1 foot by 6 feet, and the two parts being hinged together
as at d on the width of 6 feet; the two parts combined would open to an area of
6 feet by 4 feet, and to slide in the shallow shelf in the way proposed, it would be
necessary that the shelf space should be 4 feet deep; in this the grill when not in
use in the daytime is thrust, the opening being covered by the stall plate or
otherwise. When it is required to protect the window, the compound grill is brought
forward about 3 feet 6 inches, there remains therefore 6 inches in the shallow space
supporting and holding the grill. The 3 feet portion is now turned up vertically and
inclined towards the sash bars, and the points or uppermost portions of the grill at
suitable places are now just long enough to enter under strong eyes or fastenings e
in the sash bars or other suitable portions of the shop front. In this position it is
evident that if the lower portion of the grill be thrust inwardly into the shelf space,
the front portion of the grill as it becomes vertical will have its points inserted
into the eyes named, in other words the hypothenuse of the base being longer than
the perpendicular of the right angle the grill enters into the eyes. Suitable catches
or bolts are arranged to seize the now short horizontal part as it is thrust in, and
the grill becomes locked without any attention by the man, and will remain so till
it is released or unlocked, which can be so contrived as to be only accomplished
from the interior of the shop or otherwise. The grill may slide on rollers if needed,
or the end of the grill may carry rollers, as shewn f, f, sliding on or between
ways g, g; the better to carry the vertical part of the grill c when sliding under
the show board the roller h may be provided.
In carrying out the above principles for storing the grill when not in use, and
the fixing by the hinged joint d or other articulation, various sizes and places will
require some modification; the shallow space will have to be deepened, or it may
have to be inclined to suit varying conditions. The grill itself may require to be
folded up upon itself when the stall board is too shallow in depth, so that it may
be stowed away, and where the lower part of the shop facia below the stall board
requires protection, the grill and the horizontal portion will take the form of the
letter T, folding up in such manner as to preserve the principle on which the grill
is fastened, by enabling the grill to go into the horizontal space.

page_text: The inner portion of the grill, that is, the horizontal portions, may be plain bars
sliding in grooves or ways, and may be caught either by catches or bolts or any
suitable contrivance.
It is also evident that the principle of fastening thus adopted may be applied to
grills entering vertically into recesses, such as hollow mullions of the windows or
sides of the facia, and the same method of fastening applied to them.
In Figure 3 is shewn a fastening which is self acting, that is, allowing the grill
to be brought out, but when thrust in the short part is locked by the catch, and
then when it is required to tako down the grill the catch must be lifted up from
the inside.
The grill may be fastened when in position either by bolts, catches, or locks, and
the grills may be either in two pieces, that is, hinged at d or formed of hinged
portions, that is, the vertical portion may be hinged at or about i, folding of course
inversely to the part shown at d. The ways or rollers in which and upon which the
grill slides may be of any suitable form or device, and may even slide in ways
without rollers.
Having now described and particularly set forth the nature of the said Invention,
and the manner of carrying the same into effect, I would have it understood that
what I claim is,―
1st. I claim a hinged grill, substantially as shewn at d, arranged to slide under
the stall board, and brought forward sufficiently to allow the upper points to be
thrust under catches, substantially as shewn at e, so that the grill when again brought
to its vertical position can be locked or fastened substantially as described.
2nd. The same method as above applied in a vertical and horizontal direction,
substantially as described.
In witness whereof, I, the said Harry Wilson Perrers, have hereunto set
my hand and seal, this Twenty sixth day of February, in the year of our
Lord One thousand eight hundred and eighty-one.
HADDV W
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