Improvements in Devices to Facilitate Building Operations.
Year: 1895

page_text: Date of Application, 11th Apr., 1895
Complete Specification Left, 9th Jan., 1896-Accepted, 15th Feb., 1896
PROVISIONAL SPECIFICATION.
Improvements in Devices to Facilitate Building Operations.
I, FREDERICK BENNETT of New Street Works, Ipswich in the County of
Suffolk, Contractor, do hereby declare the nature of this invention to be as
follows:-
This invention relates to a device or hanger to be employed in building
operations for the purpose partly of dispensing with the ordinary scaffolding, and
especially in building concrete walls and the like to save the expense which may
be involved in the scaffolding and wooden struts and supports necessary to secure
the boards or planks employed to make the moulds into which the concrete is
cast. The wood-work commonly employed is apt to become very expensive
especially if a wall has to be built on open ground so that the walls of the mould
must be provided upon both sides and the greater part of this expense I am able
to avoid by employing the following device.
The device or instrument consists of a curved bar a portion of which is adapted
to be built into the concrete or masonry as the case may be leaving another
portion projecting; the portion to be built into the concrete is preferably bent
over at right angles and the end split and opened so as to provide a secure hold
in the concrete after the fashion of a lewis bolt or otherwise, while the portion
upon the outside of the wall is bent into a hook or otherwise adapted to support
the board or plank which will be required for the next course of the concrete.
The portion to be sunk in the concrete if inserted after a portion of the concrete
has set may have the split or fish-tailed end inserted in a hole provided for it
preferably while the concrete was soft and may be cemented therein or it may be
otherwise secured. As an additional precaution I prefer to place a certain amount
of fresh concrete over the device or hanger after it has been inserted to make
certain that the hanger is sufficiently secured before the weight of the plank which
it has to support comes upon its outer end.
These hangers may be inserted at every course up to the top of the wall and as
the hooks or outer ends would then be left projecting beyond the wall and it would
not be desirable, besides being expensive, to remove these ends by cutting them off
with a cold chisel, it is necessary to provide some means for getting rid of them.
This I accomplish in the following manner :-
I nick the underside of the hanger at a suitable distance say conveniently at
about one inch in the wall; this does not seriously weaken the hanger for
supporting purposes, but if the projecting portion be struck sharply from
underneath it will easily break and can be withdrawn and the hole filled up thus
cheaply and expeditiously disposing of the projecting end.
Dated this 11th day of April 1895.
BOULT & WADE,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improvements in Devices to Facilitate Building Operations.
I, FREDERICK BENNETT of New Street Works, Ipswich in the County of
Suffolk, Contractor, do 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 :-
This invention relates to a device or hanger to be employed in building
operations for the purpose partly of dispensing with the ordinary scaffolding, and
especially in building concrete walls and the like to save the expense which may
be involved in the scaffolding and wooden struts and supports necessary to secure
the boards or planks employed to make the moulds into which the concrete is cast.
The wood-work commonly employed is apt to become very expensive especially
if a wall has to be built on open ground so that the walls of the mould must be
provided upon both sides and the greater part of this expense I am able to avoid
by employing the following device.
The device or instrument consists of a bent bar, a portion of which is adapted
to be built into the concrete or masonry as the case may be leaving another
portion projecting; the portion to be built into the concrete is preferably bent
over at right angles and the end split and opened so as to provide a secure hold in
the concrete while the portion upon the outside of the wall is bent into a hook or
otherwise adapted to support the board or plank which will be required for the
next course of the concrete. The portion to be sunk in the concrete, if inserted
after a portion of the concrete has set, may have the split or fish-tailed end
inserted in a hole provided for it preferably while the concrete was soft and may
be cemented therein or it may be otherwise secured. As an additional precaution
I prefer to place a certain amount of fresh concrete over the device or hanger
after it has been inserted to make certain that the hanger is sufficiently secured
before the weight of the plank which it has to support comes upon its outer end.
These hangers may be inserted at every course up to the top of the wall and as
the hooks or outer ends would then be left projecting beyond the wall and it would
not be desirable, besides being expensive, to remove these ends by cutting them off
with a cold chisel, it is necessary to provide some means for getting rid of them..
This I accomplish in the following manner;-
I nick the underside of the hanger at a suitable distance say conveniently at
about one inch in the wall; this does not seriously weaken the hanger for
supporting purposes but if the projecting portion he struck sharply from
underneath it will easily break and can be withdrawn and the hole filled up thus
cheaply and expeditiously disposing of the projecting eud.
In the accompanying drawings
Figs. 1, 2, and 3 are perspective views of three different forms of the device
or hanger constructed according to this invention and
Fig. 4 is a perspective view showing a practical application of the hangers.
Fig. 3 is drawn to a smaller scale than that to which Figs. 1 & 2 are drawn.
Like letters indicate like parts throughout the drawings.
The hanger A shown in Fig. 1 is constructed of a bar or strip of iron bent near
one end at or about a right angle to form a projection B which may extend either
downwards (as shown in full lines) or upwards (as shown in dotted lines) according
to requirements. Towards its other end the bar is bent downwards and upwards
to form a hook C. A short distance to the rear of the hook C the bar is provided
with a nick D in its underside. The front and back members of the hook C in
Fig. 1 are somewhat inclined from the vertical, this being a desirable arrangement
when the hanger is to be used for supporting scaffolding &c. against a wall, buttress,

page_text: or other structure having an inclined face such as is indicated by the dotted!
line E in Fig. 1.
The hanger shown in Fig. 2 differs from that previously described only in that its.
projection B is split and the separated portions are spread apart, and the front
and back members of the hook are vertical, the hanger being specially applicable
for supporting scaffolding &c. against a wall or structure having a vertical face.
The two forms of hangers previously described are shown in Fig. 4 as applied to.
a concrete wall those similar to Fig. 1 being represented as projecting from the
inclined faces E and those similar to Fig. 2 as projecting from the vertical face E'..
These hangers may be inserted at every course of the structure with their members F
abutting against the face E or E' thereof and adapted to take a purchase thereon.
when the load is applied to the hook C.
When it is desired to remove the portion of the hanger projecting from the face
of the wall, I cut away a small portion of the wall as indicated by the dotted line G
in Fig. 1 (as by means of a cold chisel or equivalent) and then give the hook Ca
sharp blow at the underside by which the hanger will be caused to separate at the
nick D. After this the hole or recess G may be filled in with cement or equivalent
and the face of the wall made smooth.
As shown in Fig. 3 I may provide the hanger with a hook C at each end which
would be a desirable arrangement for building a wall without struts or scaffolding
at either side; a hanger such as this would be built into the wall so that one hook.
would project from each side or face of the wall. The hooks C of this last described
device may be formed as shown in Fig. 1 or Fig. 2 or one may be as in Fig. 1 and.
the other as in Fig. 2.
In concrete structures such as represented in Fig. 3 the hangers A serve for
supporting both these scaffolding H and the boards (hereinafter termed the
moulding boards"), between which the concrete is moulded; these moulding
boards are not shown in the drawings.
it
It will be readily appreciated that the hanger shown in Fig. I may be provided.
with a projection B such as shown in Fig. and that shown in Fig. 2 may be
provided with a projection B such as shown in Fig. 1.
A special object of this invention is to provide a device adapted to be built into
and partly project from a wall or other structure and so arranged that while it
is sufficiently strong to support scaffolding, moulding boards or equivalent it yet
has a weakened part at which the projecting portion will readily separate from the
part embedded in the structure if said projecting portion be struck or pressed upon
in a direction the reverse of that of the pressure of the load it is adapted normally
to support. Provided that result is secured, it does not matter what means are
resorted to for obtaining it, as it will be obvious that various means may be.
employed for the purpose, for example the device may be of cast iron annealed at
all parts except that at which it is desired the separation shall take place, which
latter part is consequently left brittle, or the projecting part may be wrought
iron and the embedded part cast iron, electrically welded or otherwise secured
to it.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed I declare that what I
claim is ;-
1. The method of removing a projecting support for scaffolding moulding boards.
or the like from a brick concrete or other structure to which it is attached
which consists in providing or forming the said support with a weak portion of
sufficient strength for working purposes but adapted to give way under a suitable
application of force for the purpose of removing the projecting portion of the
support.
2. A device adapted to be built into a brick concrete or other structure for
supporting scaffolding moulding boards or equivalent and provided with a nicked

page_text: or weakened part at which it may be readily separated after the structure is
completed substantially as described.
3. A device adapted to be built into a brick concrete or other structure for
supporting scaffolding moulding boards or equivalent and to take a purchase upon
the face of the structure the device being provided with a nicked or weakened part
substantially as and for the purpose described.
4. A device for use in building operations substantially as described and
illustrated in Fig. 1 or in Fig. 2 or in Fig. 3 of the accompanying drawings.
Dated this 6th day of January 1896.
FRED. BENNETT
Boult & Wade,
Agents for the Applicant.