MENTS IN GRILLES FOR PROTECTING SHOP FRONTS
Year: 1884

page_text: I ALFRED. ATTWOOD, of Canal Head Foundry, Ulverston, in the County of
Lancaster, Engineer, do hereby declare the nature of iny Invention for IMPROVE
MENTS IN GRILLES FOR PROTECTING SHOP FRONTS, to be as follows:-
My improvements are designed to protect the fronts of Shops and Offices when
closed after business hours, without entirely preventing the goods exposed in the
windows from being seen from without.
For this purpose I construct the Grilles either to cover the entire front, and to
coil above or below, in the same way as Revolving Shutters, and with a similar
Balance Motion;-or I make them to cover only the lower portion of the window,
in which case they either coil below the stall board on a roller with Balance
Motion, or collapse into a recess below the window.
In other cases when either of these plans are inconvenient, I-construct them so
as to be taken down, collapsed into a small compass and stowed away during
business hours.
In constructing revolving Grilles to coil either above or below, I form them of a
number of horizontal bars, spaced a few inches apart vertically, and strung
together by vertical pitched chains, (at proper intervals in the length of the Grille)
to the links of which the horizontal bars are attached in different ways according
to the section adopted. The bars may be of round iron, gas-tube, L iron, T iron, or
any moulded section, or may be drawn laths of a flat semi-oval section, or indeed
any section that can be drawn or rolled, either solid or hollow. The ends of the
borizontal bars are guided in vertical grooves in the same way as revolving
shutters. The bars or the pitched chains may be decorated with stamped or
moulded rosettes, buttons or similar ornaments, not projecting sufficiently to
interfere with close coiling on the roller.
In constructing Expanding and Collapsing Grilles which are not removable,
I form them also of a number of horizontal bars of any section as in the revolving
Grilles; but instead of pitched chains I employ diagonal crossed laths, rivetted at
the central crossings to the horizontal bars, on the principle of the lazy-tongs. So
that when collapsed the Grille occupies the height (vertically) only of the horizontal
bara. If too heavy to lift by hand, they may be balanced by weights with cords
or chains pulling horizontally against the extended ends of the diagonal laths.
In cases where the Grilles are to be removable, I form them either on the lazy-
tongs plan as last described; or, of horizontal and vertical bars at equal distances
rivetted loosely at every intersection so that when taken down they may be
collapsed diagonally,
To protect the ironwork from rust, I pass all the separate portions of the Grilles
through the Bower-Barff process before putting together.

page_text: I ALFRED ATTWOOD, of, Canal, Head Foundry, Ulverston in the County of
Lancaster Engineer, do. hereby declare the nature of my Invention for IMPROVE-
MENTS IN GRILLES FOR, PROTECTING, SHOP FRONTS and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement :-
My improvements are designed to protect the fronts of shops and Offices when
closed after business hours, without entirely preventing the goods exposed in the
windows from being seen from without.
For this purpose I construct the Grilles either to cover the entire front and to
coil above or below in the same way as Revolving Shutters, and with a similar
balance motion; or I make them to cover only the lower portion of the window, in
which case they either coil below the stallboard on a roller with balance motion, or
collapse into a recess below the window. In other cases when either of these plans
are inconvenient, I construct them so as to be taken down, collapsed into a small
compass, and stored away during business hours.
***
--
In constructing Revolving Grilles to coil either above or below, I form them of
a number of horizontal bars spaced a few inches apart vertically and strung together
by, vertical pitched chains (at proper intervals in the length of the Grille), to the
links of which the horizontal bars are attached in different ways according to the
section of bar adopted. The Bars may be of round iron, gas tube L iron, Ti-iron or
any moulded section; or may be drawn laths of a flat semi-oval section as Fig. 3. or
indeed any section that can be drawn or rolled either solid or hollow. The ends
of the horizontal bars are guided in vertical grooves in the same way.as.Revolving
Shutters. The bars or the pitched chains may be decorated with stamped or
moulded rosettes, buttons or similar ornaments not projecting sufficiently to
interfere with close coiling on the roller..
In constructing expanding and collapsing Grilles which are not removable,
I form them also of a number of horizontal bars of any section as in the revolving
Grilles but instead of pitched chaius I employ diagonal laths and links as in Fig. 2.
rivetted together as shewn on the principle of the .lazy-tongs; so that when
collapsed the grille occupies the height (vertically) only of the horizontal bars. If
too heavy to lift by hand they may be balanced by weights and cords or chains at
each end. By setting this form of Grille on end and attaching an ordinary castor
as shewn in Fig. 2. (dotted lines) this Grille may be employed to close the doorway
space between the windows of shop fronts."
:
In cases where the Grilles are to be removable, I form them either on the lazy-
tongs plan as last described, or, of horizontal and vertical bars at equal distances
rivetted loosely at every intersection so that when taken down they may be
collapsed diagonally, see Fig. 4.
"
To protect the ironwork from rust I pass all the separate portions of the grilles
through the Bower-Barff process before putting together.
5.1881
The accompanying drawings shew various ways of constructing the Grilles.
Figs. 1:3 & 5 shew tho revolving grille, the bars of which may be of any section.
Fig. 2-Expanding grille to collapse down into the stallboard. Fig. 4, Removable

page_text: grille and Fig. 2.- (with_dotted lines) a form of Expanding Grille or gate where
required to close up the space between the windows forming the shop doorway or
entry,
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is
The methods, substantially as described and illustrated of forming revolving and
expanding Grilles for shop fronts, from bars of any section and curved or straight.
links, so that they may be either coiled like revolving shutters, or collapsed when
not required.