Improvements in the Construction of Scaffolding for Repairing, Straightening, and Building of Chimney Stalks, and for the Fitting thereto of Lightning Conductors.
Year: 1889

page_text: Date of Application, 27th Aug., 1889-Accepted, 28th Sept., 1889
COMPLETE SPECIFICATION.
Improvements in the Construction of Scaffolding for Repairing,
Straightening, and Building of Chimney Stalks, and for the
Fitting thereto of Lightning Conductors.
I, WILHELM EBELING of Bernburg in the Duchy of Anhalt and German Empire,
Chimney-stalk Artificer 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:-
It frequently happens with chimney stalks and especially high ones, that after a
lapse of time, they tend to incline to one side, or that they become otherwise injured
and require to be repaired. In repairing such damage it has been necessary hitherto
to raise a scaffolding from below, which caused considerable expense and indeed
occasionally stopped the working of the factory. It is the object of the present
invention to remedy such inconveniences.
The invention has reference to an artificial scaffolding which permits the repair of
damaged places, as also the straightening of chimney stalks and pointing, building
them higher, and binding them, and the fixing of lightning conductor arrangements,
while the factory is at full work.
And in order that my said invention may be properly understood a sheet of
explanatory drawings is hereunto appended.
On the drawings fig. 1 shows a portion of a chimney stalk, with the scaffolding
fixed, in front elevation.
Figs. 2 and 2 are respectively side and front views of an iron trestle.
Figs. 3 and 3 similar views of a wooden trestle.
Figs. 4 and 5 show different methods of fastening the trestles to the chimney
stalk.
Fig. 6 is a view of a supporting hook for driving into the chimney.
The ascending scaffolding consists mainly of scaffolding shelves or trestles, which
are raised on the chimney stalk in a peculiar manner. The following is the mode of
procedure.
First, place a ladder A, below, sloping against the chimney stalk B, and at the top,
rung or round drive in a hook D, and fix the ladder thereto with cord or wire. A
man now ascends, and, on both sides of the ladder, at its upper end, drives in hooks F,
and on each hook hangs and fastens a trestle in position. He then lays one or more
boards over the trestles, and the first scaffolding is then ready. A workman now
ascends to these shelves or scaffolds, and again drives in another hook D at a man's
height, hangs a second ladder A¹ on this, and binds both ladders A, A' together with
cord or wire. In order to preserve the upright position of ladder A¹ another hook D¹
is driven into the chimney at or about the middle of the ladder. The man now
ascends to the top of the ladder A' and again drives in hooks F on both sides as
before, hangs trestles on them, and, after securing these, forms the second scaffolding
shelf by laying boards across. The procedure, just described, is repeated until the
injured part of the chimney stalk is reached.
Instead of using different scaffolds or shelves at each ladder, the first shelf or
scaffold can, if desired, be removed higher up to the third ladder, and the second
shelf or scaffold be fitted at the fourth ladder and thus by applying the two scaffolding
shelves, one after the other, any height on the chimney stalk can be reached.
Should more considerable repairs to the chimney stalk be necessary, scaffoldings
are arranged, in the manner just described, up to the point of damage, hooks are
driven in on both sides of the top shelf, trestles fitted thereto and boards laid across,
and from the thus newly erected scaffold or shelf which will have the appearance
shown in fig. 1 the building can be continued round the chimney stalk. By shifting
го

page_text: the hooks and trestles gradually higher up the scaffolding may be raised to any
desired height on the chimney.
If a chimney stalk should be bound, the scaffolding can be hung, by means of
"S" shaped hooks M, as shown in fig. 4, on the ring or band G, and can be raised
higher from ring to ring, which is simpler and easier, than the method previously
described.
The removing of the scaffolding proceeds in reverse manner to the building of it,
and all books are taken out. The hooks can be so arranged as to be removable and
may be of the form indicated in fig. 6.
The trestles may be made of iron, as shown at figs. 2 and 2ª, or of wood as shown
at figs. 3 and 3ª or they may be made partly of iron and partly of wood.
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
1. A scaffolding for repairing, straightening and building chimney stalks, or for
fixing lightning conductors to them, constructed, by the use of ladders (A)
looks (D) (D) and (F) and trestles of iron or wood, in such manner, that, from the
ground upwards, by means of the ladders (A) hooks (F) are driven in on both sides
of the upper end of the ladders, on which the trestles are hung and on which again
boards are laid these boards being used as a resting point for another ladder sub-
stantially as hereinbefore specified.
2. The hanging of the trestles on the rings (G) which serve to bind chimney
stalks, substantially as hereinbefore described and represented at figs. 1 and 4 of the
drawings annexed.
Dated this 26th day of August 1889
H. D. FITZPATRICK,
70, Wellington Street, Glasgow, Applicant's Agent.