Improvements in Expanding and Contracting Door, Window, Shop- front Guards, and the like.
Year: 1896

page_text: Date of Application, 9th Sept., 1896
Complete Specification Left, 27th Nov., 1896-Accepted, 13th Feb., 1997
PROVISIONAL SPECIFICATION.
Improvements in Expanding and Contracting Door, Window, Shop-
front Guards, and the like.
I JOHN JUDD of 5 Fassett Road Fassett Square Dalston in the County of
Middlesex Carpenter and Joiner do hereby declare the nature of this invention to
be as follows:-
My invention relates to improvements in expanding and contracting door window
shop-front guards and the like which are made of wrought cast malleable forged
pressed drawn or twisted iron vertical bars or a combination of two or more of the
foregoing kinds and which are attached to expanding and contracting lattice-plates
of various lengths.
The outside vertical bars of each guard is formed of what is known as channel-
iron each bar in one piece only with oblong perforations cut through the sides for
keys or lugs fixed in sliding blocks attached to the ends of the longest lattice-plates
to pass through for attachment to connecting bands or straps.
The intermediate vertical bars are formed solid of various sections and are side
slotted to receive lattice-plates, and are also built up with what is known as half-
round and flat bar-iron pressed shaped and rivetted together.
The lattice-plates are secured together and to the outside and intermediate bars
by countersunk headed rivets the heads being finished off flush with the edges of
the bars and the face of the lattice-plates.
To the extreme right and left hand ends of the longest lattice-plates a rebated
sliding block is loosely rivetted the said block being fitted to slide and work inside
the channel bars, and is kept in position by means of a oblong key or lug being
securely fixed in the block passing through and working in a slotted perforation
cut in the sides of the channel bar.
To the said keys or lugs passing through the sliding blocks and channel bars,
connecting bands or straps for interlocking the said blocks are rivetted or otherwise
fastened to the upper ones only of each set on one side, and to the lower ones only
of each set on the other side.
This device of interlocking the keys or lugs fixed in the sliding blocks attached
to the lattice-plates, will cause a simultaneous movement of all the blocks when the
guards are being opened or closed and thereby keep the channel-bar sides
approximately parallel to each other and prevent racking.
Dated this 8th day of September 1896.
Improvements in Expanding and Contracting Door, Window, Shop-
front Guards, and the like.
1, JOHN JUDD, of 5, Fassett Road, Fassett Square, Dalston, in the County of
Middlesex, Carpenter and Joiner, do hereby declare the nature of this invention
and in what mauner the same is to be performed, to be particularly described and
ascertained in and by the following statement:-
My invention relates to improvements in expanding and contracting door, window,

page_text: shop-front guards and the like which are made of wrought, cast, malleable, forged,
pressed, drawn or twisted metal (preferably iron) vertical bars or a combination
thereof, and which are attached to expanding and contracting lattice plates of
various lengths which together form a species of "lazy tongue" arrangement.
The outside vertical bars of each guard are formed of what is known as channel
iron each bar in one piece only and having oblong perforations cut through its
sides for the passage of keys or lugs fixed at one end to sliding blocks attached to
the ends of the longest lattice plates, the other end being attached to connecting
bands or straps extending from the top to the bottom of the outside of the sides of
the channel bars already mentioned.
The intermediate vertical bars may be formed solid of various cross sections and
are side slotted to receive the lattice plates above referred to. They may also be
built up with what are known as half round and flat bar iron pressed shaped and
rivetted together.
The lattice plates are secured together and to the outside and intermediate birs
by countersunk headed rivets and revolving pins with screw heads, the heals
being finished off flush with the edges of the bars and the face of the lattice
plates.
To the extreme right and left hand ends of each of the longest lattice plates a
rebated sliding block is loosely rivetted, the said blocks being fitted to slide up and
down inside the channel bars, each block being kept in position by means of an
oblong key or lug securely fixed to the blocks and passing through and working in
a slotted perforation provided in the sides of the channel bar.
To the said keys or lugs which are attached to the sliding blocks and pass
through the slots in the channel bars, are also attached connecting bands or straps
for interlocking the said blocks. One of these connecting bands or straps is
connected to the upper blocks of each set, the other to the lower ones, there being
thus one band on each side of the channel bar.
This device of interlocking the keys or lugs fixed to the sliding blocks attached
to the lattice plates, will cause a simultaneous movement of all the blocks when
the guards are being opered or closed, and thereby keep the channel bar sides
approximately parallel to each other and prevent "racking."
In order that my invention may be the more readily understood, I make
reference to the accompanying sheet of drawings in which
Fig. 1 is a front view of part of a guard constructed in accordance with my
invention.
Fig. 2 a section through the outside channel and intermediate bars.
Fig. 3 a section through the channel bars and the sliding blocks.
Fig. 4 an end view with the back of the channel removed.
Fig. 5 an end view of one of the intermediate vertical bars.
Fig. 6 section of intermediate bar only at A B Fig. 5.
Fig. 7 section of intermediate bar at CD Fig. 5.
Similar letters refer to the same parts wherever they occur.
a are the outside vertical bars of channel cross section. b are the intermediate
vertical bars. care the lattice plates put together in "lazy tongue" fashion.
d are slots in the intermediate bar b and the lattice plates c pass through the slots,
being fastened thereto by pins (preferably revolving ones) or equivalents e passing
through the lattice bars and also through the vertical bars. The pins e have screw
heads so that when the upper part is worn, they can be turned round by a screw
driver. The ends of the lattice plates c are free not having pins, bolts, or rivets ;
no coupling of any kind being required at the ends to guide them when at work.
Pins similar to e pass through the sides of the channel bars a and also through the
lattice plates. The extreme right and left ends of the longest lattice bars hi are
loosely attached by pins / to the blocks m sliding in the channel bars a. Each
block m has an oblong key or lug o attached to it and passing through slots p
provided in the sides of the channel bars a. The keys o attached to the blocks
carrying the ends h pass through slots p in both sides of the channel bars a and the

page_text: keys o attached to the blocks carrying i also pass through slots p in both sides of
the channel bar a. The keys o on one side however are also attached to the
connecting band or strap q and those on the other side to the band or strap r.
When the guard is opened or closed these straps move up and down following the
movement of the respective blocks to which they are attached by the keys or
lugs o. The upper or lower end or both ends ofy and r may be slotted and work
over pins or screws attached to the sides of a. Pins may be provided on which the
closed guard can turn when shut. The lower ends of the intermediate bars may
run in a bottom channel provided for the purpose as in the case of ordinary guards
of the kind.
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
1. In expanding and contracting door window and shop front guards and the
like the use of channel bar sides or vertical bars in one piece only, substantially
as described in the above specification, and exemplified in the accompanying
drawings.
2. In expanding and contracting door window and shop front guards and the
like the use of intermediate bars formed of half round or flat bar metal bent
shaped and rivetted together, substantially as described in the above specification,
and exemplified in the accompanying drawings.
3. In expanding and contracting door window and shop front guards and the
like the sliding blocks loosely rivetted to the longest lattice plates at the right and
left hand ends of each row of lattice plates substantially as described in the above
specification and exemplified in the accompanying drawings.
4. In expanding and contracting door window and shop front guarde and the
like lugs or keys securely fixed to or forming part of sliding blocks, the said lugs
passing through slots in the channel bar sides for the purpose of keeping the blocks
in position and for attaching thereto connecting bands or straps substantially as
described in the above specification and exemplified in the accompanying drawings.
5. In expanding and contracting door window and shop front guards and the
like the connecting bands or straps outside the sides of the channel bars for the
purpose of interlocking the lugs or keys attached to or forming part of the sliding
blocks which are fastened to the. lattice plate ends, substantially as described in
the above specification and exemplified in the accompanying drawings.
6. Expanding and contracting door window and shop front guards and the like,
constructed and operating substantially as described in the above specification, and
exemplified in the accompanying drawings.
Dated thin and day of November 1896.
HUGHES & YOUNG,
23, Coleman Street, London, E.C., Agents for Applicant.