Improvements in Apparatus for Facilitating the Construction of Brick Arches for Floors and the like.
Year: 1895

page_text: Date of Application, 7th May, 1895
Complete Specification Left, 24th Jan, 1896-Accepted, 7th Mar., 1896
PROVISIONAL SPECIFICATION.
Improvements in Apparatus for Facilitating the Construction of
Brick Arches for Floors and the like.
I, EDGARD BARRACHIN, the younger, of Bar-le-Duc, in the Republic of
France, Manufacturer, do hereby declare the nature of this invention, to be as
follows:-
My invention relates to apparatus for facilitating the construction of brick
arches between iron girders, or between an iron girder and a wall, for fireproof
floors and the like.
The improved apparatus consists of an arched template of wood of the usual
kind, fitted between two parallel wooden beams and held in position by a transverse
bolt near one end. Tho parallel beams are kept in position at one end by wooden
blocks of suitable shape between them, and at the other end beyond the template
by two outer side pieces of wood bolted to them by transverse bolts which pass
through longitudinal slots in the beam, so that the position of the side pieces can
be adjusted as desired These side pieces have strongly fixed upon their inner
ends vertical hooks the upper hooked ends of which fit over the lower outer edge
of one of the iron girders upon which the arch is to be built, and the other euda of
the beams carry similar hooks which fit over the outer lower flange of the other
iron girder.
In order to use the apparatus, it is fixed to the parallel iron girders by the hooks
described, and the centering board or template is then adjusted between the beams
until it is in the exact position so as to leave room above its upper edge for the
boards upon which the brickwork is to be built. The bolts are then tightened up,
the boards placed in position and the brickwork built upon them.
Where one end of the arch is to be built against a wall instead of upon an iron
girder, the bricks which carry the corresponding ends of the wooden beams are
carried by hooked irons built into the wall in the proper places. The other ends
of the beams are carried by the hooks upon the adjustable side pieces as already
described. As many sets of the apparatus as desired may be used.
Dated this 7th day of May 1895.
Improvements in Apparatus for Facilitating the Construction of
Brick Arches for Floors and the like.
I, EDGARD BARRACHIN, the younger, of Bar-le-Dur, in the Republic of
France, Manufacturer, du hereby declare the nature of this invention, and in
what manner the same is to be performed, .to be particularly described and
ascertained in and by the following statement and accompanying diawing, that is
to say :-
•
My invention relates to apparatus for facilitating the construction of brick

page_text: arcuts ocbween fron giruers, or between an on gnder and a wall, or reproot
floors and the like.
The accompanying drawing is in illustration of my invention,
Figure 1 being an elevation of the apparatus arranged between I-shaped
girdeis,
'
1 4
Figure 2 is a side view, corrcaponding with Figure 1; 'and
Figure 3 shews the apparatus arranged between a wall on
an 1-shaped girder on the other side.
one side and
The improved apparatus consists of an arched template n of wood of the usual
kind, fitted between two parallel wooden beams g and held in po-ition by a transverse
bolt m near one end. The parallel beams g are kept in position at one end by
blocks rand of suitable shape between them, and at the other end beyond the
template by two outer side pieces of wood e bolted to them by transverse bolts e, f,
which pass through longi udinal slots in the beam 9, 9, so that the position of the
side pieces o can be adjusted as desired. These side pieces have strongly fixed upon
tben inner ends vertical hooks b the upper booked ends of which fit over the lower
outer edge of one of the non girders upon which the arch is to be built, and the
other ends of the beams carry similar hooks a which fit over the outer lower flange
of the other on guder, t.
In order to use the apparatus, it 18 fixed to the lower flange of the girder t by
the hooks a, the centering board on template being adjusted between the beams
until it is in its position so as to leave 100m above its upper edge at ง for the
boards upon which the buckwork is to be built, and the sliding side-pieces care then
moved along until the booke & ht upon the lower flange of the girder t. The
winged nuts e, f, are then tightened up, by hand, the centeng board being
adjusted and held exactly in the required position, and a sufficient number of the
adjustable centerings having been arranged, the boards are placed in position and
the brickwork built upon them.
Where one end of the arch is to be built against a wall, as shewn in Figure 3,
instead of upon an iron girder, the bucks which carry the corresponding
ends of the wooden beams 9 are carried by hooked arous fixed in the wall in the
proper places, the centering board being turned end for end, so that its point p
(Figure 1) which is cased with non, tests upon the block r.
The bolts nie
unscrewed, (that m not being required in this case), and the beams g being brought
to then place, the slding pieces c are moved along, until the other end of the
benmis is called by the hooks & upon them, as already described.
b
If the distance between the guders is less in proportion to the arch than is shewn
In the drawing, the night hand end of the centering board may be lowered between
the beams g, the slding pieces c being brought to the position required by the
distance between the girders.
As many sets of the apparatus as desned may be used.
Having now particularly descubed and ascertained the nature of my said inven-
tiou, and in what manner the same is to be performed, I declare that what I
clann 18:-
A centering board, with adjustable slides, for building arches between girders,
or between a girder and a wall, consisting of-
1. The centering board itself n, held between beams g, and traversed by a bolt m
having an adjustable nut.
2. The beams g, provided with hooks a at one end, and kept in position by
blocks rand, and grooved to allow the movement of adjustable sliding pieces c
provided with hixing bolts e, f, and carrying hooks similar to those a at the
other end.
"
3. The hooks a upon the beams, and upon the sliding pieces, fitting above
the lower flange of the girders t, as shewn in. Figure 1, or above the flange
of the girder t' at one end, and into a wall at the other end, as shown in
Figure 3.

page_text: 4. The wooden centering, board, fitting between beams and sliding pieces, as
described, and capable of being fixed either between two girdors, or between n
girder and a wall; all substantially as described and illustrated.
Dated this 24th day of January 1896.
EDWARDS & Co.,
65 and 66, Chancery Lane, London, Agents for the Applicant.