Improved Adjustab TO SCRO
Year: 1898

page_text: Date of Application, 14th Mar., 1898
Complete Specification Left, 29th Nov., 1898-Accepted, 14th Apr., 1899
Improved Adjustab TO SCRO
I, ANDREAS CSORBA, of Miskolos, in the Kingdom of Hungary, Empire of
Austro-Hungary, Master Builder, do hereby declare the nature of this invention
to be as follows:-
My invention relates to adjustable trestles for scaffolding and consists in the
fastening together of three or more vertical rails or or iron by means of iron
rings of any desired form in such way that a vertical support can pass up the
centre so as to be adjustable to any part of its length.
The upper parts of the vertical rails are held parallel to each other, whilst the
under parts are bent outwards to serve as feet and thus give more stability to
the trestle.
The vertical adjustable support in the centre of the legs previously mentioned
is preferably of I iron and is provided at given intervals with slots for the inser-
tion of pins or cotters for keeping it in position. At the top end of said part suit-
able angle irons can be fitted for receiving the scaffold beams.
The trestle can be arranged so as to have two independently acting centre
pieces or pillars by combining two rings each holding two legs.
A lever can be fitted to the stands, the inner end of which is formed like a
foot of which the heel passes into one of the slots of the pillar whilst the curved
foot piece prevents said pillar from slipping down.
Dated this 14th day of March 1898.
J. E. EVANS-JACKSON & Co.,
Agents for the Applicant.
I, ANDREAS CSORBA, of Miskolos, in the Kingdom of Hungary, Empire of
Austro-Hungary, Master Builder, 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:―
The present invention relates to an adjustable trestle for scaffolding which,
while it can be put to the same uses as ordinary scaffolding, is especially
suitable for ceiling and facade work.
The invention consists essentially, in combining lengths of L or T iron with iron
rings of various shapes, so as to form a frame within which is an adjustable pillar
of preferably I iron. Both the lengths or legs of the frame and rings, and also
the adjustable pillar can carry brackets to serve as extra supporting surfaces.
1 ...מ

page_text: made to slide (Fig. 17) and one of its projecting ends ¹ enters into one of the
holes on the side towards which it is caused to slide, a passage 9 being formed
in the pillar-top to allow the plate to pass from one side to the other. When one
end of the plate r is in one of the holes of the bracket, the other end is in
the passage q and the plate being thus held firmly, it can be used as a support
for horizontal beams or pillars and its edge enters into the groove o of another
pillar-top. The plater can also be turned so as to lie flat ou the bottom of the
bracket d. This is effected by means of the cut-out portions on each side of the
centre-piece. When turned flat, each end r of the plate r is equi-distant from
the passage 9 and, in this position the plate can also be used as a support.
Figs. 19 and 20 show an arrangement of parallel rail or frame consisting of
a length of rail n which is connected to the pillar c by means of links m. Planks
can be placed inside this frame as shewn Fig. 21 and are held in position by their
own weight at are stays which serve to strengthen the under parts or feet of the
frame a, b are dogs which by being made to clip an upright pillar, enable the
pillar to which they are attached to be used as diagonal stay.
Fig. 20 also shows an arrangement for holding the pillar c. The pillar c is
usually raised by hand and held by cotters k. In order to release these cotters
when there are weights on the pillar, a lever 7 is used which is pivoted at *
between two parallel plates f connected to two rings b, or between a plate f and
one of the legs a of the frame. This lever g is provided with a foot end, the
heel of which engages with the holes e in the pillar c in such way that, when
the lever-handle is pressed down, the pillar c is slightly raised and the cotter k
can be released. When the pillar c is being dropped, the sole portion i presses
against it and forces it against two converging sides of the ring b, the resulting
friction acting as a brake and preventing a too rapid descent. Where the rings
are circular or exactly rectangular, wedges ; are used in order to obtain the con-
verging surfaces (Fig. 5).
Where heavy weights are being supported, the lever is preferably pivoted
inside the ring as in Figs. 8, 9 and 10; otherwise the said lever can be pivoted
outside the ring 6 as shown in Figs. 3, 5, 6 and 7.
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. An adjustable trestle for scaffolding, consisting of lengths of T or L iron
in combination with iron rings forming a frame and a moveable pillar within
said frame.
2. In an adjustable trestle for scaffolding of the type described, the combination
with the frame and inner pillar, of brackets and plates with or without recessed
portions substantially as shown and described.
3. In an adjustable trestle for scaffolding of the type described, the combination
with the inner pillar of a parallel frame substantially as described and shown.
Dated this 29th day of November 1898.
J. E. EVANS-JACKSON & Co.,
Agents for the Applicant.