Improvements in Scaffolding.
Year: 1896

page_text: Date of Application, 4th Jan., 1896-Accepted, 28th Mar., 1896
Improvements in Scaffolding.
We, FRANZ GUSTAV KNOPFE and HEINRICH ALBIN RÖDER of Chemnitz, in the
Empire of Germany do hereby declare the nature of our invention and in what
manner the saune is performed to be particularly described and ascertained in and
by the following statement :-
The object of the present invention is to produce iron scaffolding, which is more
durable and more convenient to manipulate than the wooden scaffolding hitherto
employed.
And in order to render the present Specification more easily intelligible reference
is had to the accompanying drawings in which similar letters of reference denote
similar parts throughout the several views:
Fig. 1 is a sectional side elevation and Fig. 2 a front elevation of one form of
carrying out the invention:
Figs. 3 and 4 are similar elevations of a modified form of the invention and
Figs. 5 and 6 are similar elevations of a further modification.
According to the present invention the scaffold poles consist of metal tubes a a' a 2
which decrease in diameter towards the top of the pole and are fitted together by
means of intermediate studs or pins e ele2 fitted between the lengths of the pole.
The lengths of the pole are advantageously made about equal to the height of the
various stories of an ordinary house. Above or below or directly at the inter-
mediate joints are attached the cross bars d, which form the supports for the
planks kk, which are retained in position on said supports by means of metal
bands m bent round at the ends and screwed to the supports. Each pair of
scaffold poles is connected to the next pair by means of stays oo having eyes at
their ends which engage over the pins or studs connecting the lengths of each
pole as shown at g. To the top stay which is next to the house is pivoted a
ladder t capable of movement along said stay and of being thrown upwards on
to the roof as shown at Figure 1. This stay may either be secured in eyes
arranged at the top of each pole by means of a nut p as shown at Figure 2 or
by means of a set screw pl penetrating the said eye as shown at Figures 3 and 4.
On such of the lengths a a' a2 of the poles as may be considered necessary is
mounted to slide a bracket i which extends towards a bar s mounted between the
poles and having orifices therein in which the said bracket end may be adjusted
by means of a bolt and nut or other suitable means. On each of two of these
brackets the planks are laid as shown at k. To the lower ones of these brackets
are attached pivoted arms extending outwardly and upwardly at an angle and
being adjustable in position by means of a set screw u said arms having thereon
hooks
for the support of planks yy to catch anything falling from the
scaffolding and prevent the injury of passers by. The brackets i may be adjusted
in position on the lengths of the poles by means of set screws r r. The lower
ends of the poles may be supported on joists B as shown at Figure 1 or may be
provided with suitable feet A as at Figure 2.
According to the modification shown at Figures 3 and 4 the lengths of tube are
attached together by means of suitable sockets b made of cast or malleable cast
iron said sockets having cast thereon the lugs gy for the reception of the stays oo
which are held in position by means of set screws. In this case the supports h
for the planking are mounted on sleeves adapted to slide on the pole lengths and
adjustable by means of set screws or their equivalent, the inward end of the said
supports rests on the window sill m instead of having a second pole against the

page_text: house and the feet of the poles are supported in suitable sockets.
The lengths
of the poles are also secured in the sockets by means of set screws c. The brackets i i
have no inner support but are mounted on sleeves sliding on and adjustable on the
lengths forming the poles said sleeves being secured in position by means of set
screws. The ladder is in this case pivoted to the outer stay o, and advantageously
jointed as shown at Fig. 3.
The supporting arms for the planks are adjustable by means of set screws u
supported in the lower sleeves to which the said arms are pivoted. The ends of
the supports are clamped in the window openings by means of adjustable clamping
screws as shown at Figure 4. The brackets kilas also the supports are
retained or adjusted in position on the poles by means of the collars having
set screws.
In Figures 5 and 6 a further modification is employed which is substantially the
same as that described with reference to Figures 3 and 4 only that instead of single
polos, pairs of poles a a a¹ a¹ a 2 a2 are provided. The stays are screw threaded
and adjustable in sleeves of the sockets as shown at g. The supports have a
cross shaped section as shown in detail at the left hand side of Figure 5 which is a
section on the line sw of the latter figure. Below Figure 6 a detail plan view of
one of the lugs g for the stays o o is shown. The brackets i i are bent round at 11
so as to secure the planks k k in position.
Many important advantages accrue from the employment of the class of scaffolding
described. The same occupies much less room when not in use than the ordinary
scaffolding, requiring only from 15 to 20 feet of room whilst the wood scaffolding
requires from 40 to 50 feet of room. Then again the metal scaffolding may be
adapted to stories of any height without the least inconvenience. The scaffolding is
put up one floor at a time and consequently does not require so many hands to erect
it as the ordinary wood scaffolding, whilst it is much more durable than the latter.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is —
1. Iron scaffolding consisting of the combination of tubular poles made in lengths,
means for connecting the said lengths, supports mounted on said poles for the foot
planks brackets mounted adjustable on the said poles between the said supports foot
planks on said brackets and stays to connect the poles up substantially as
described.
2. The combination of tubular metal poles made in lengths sockets to connect the
said lengths, lugs on said sockets and stays adjustable in said lugs to connect up the
poles, cross supports adjustable on said poles and means for securing the same in
position on the poles and brackets intermediate of said cross stays adjustable on said
poles by means of sleeves and set screws substantially as described and shown.
3. The combination of a series of tubular poles made in lengths, sockets to connect
up said lengths, cross supports for the planking, adjustable on said poles brackets also
adjustable on the poles to support planking intermediate of the cross supports, lugs to
the joint sockets and stays o o adjustable therein, adjustable arms on the lower
support sleeves substantially as described.
4. The combination of tubular poles made in sections, sockets to connect up said
sections, supports for the planking adjustable on said poles, rackets for planking
adjustable on said poles intermediate of the supports, lugs on said supports sleeves and
stays adjustable in said lugs, ontwardly extending arms pivoted at the lower part
of said poles and adjustable in their angle of incline and a ladder laterally moveable
on the upper stay o to reach the roof substantially as described and shown.
Dated this 4th day of January 1896.
HASELTINE, LAKE & Co.,
45 Southampton Buildings, London, W.C., Agents for the Applicants.