An Improved Apparatus for Tying and Building Scaffolding.
Year: 1897

page_text: PROVISIONAL DIUITIATION
An Improved Apparatus for Tying and Building Scaffolding.
FRANCIS JOHN RYAN FRANCIS JOHN RYAN Junior and ALFRED DANIEL RYAN of
the firm of Ryan Bros. Hillbrow Works Plough Road Clapham Junction S.W.
Builders and Contractors do hereby declare the nature of this invention to be as
follows:-
It consists of two iron or other metal plates shaped and placed in a line with a
pole or standard they are apart so as to lay on the sides of the upright, and across
them outside are rivetted four other plates also shaped to the pole, if necessary they
may be made in one piece, at the back or outside of the rivetted plates the ends are
hooked to receive links for the purpose of connecting the upright plates and when in
use to form a grip around the pole, the other end of the rivetted plates are hooked
to receive a chain or cord, two small hooks are also rivetted to the upright plates to
hold the apparatus in position while fixing When used for the purposes of carrying a
ledger or horizontal pole there is placed on the two bottom hooks a chain connected
at one end to a plate shaped to form a bed for the ledger the other end of which is
formed into a hook by means of which a very substantial tie can be made.
Dated this 2nd day of March 1897.
FRANCIS JOHN RYAN
FRANCIS JOHN RYAN JUNIOR
ALFRED DANIEL RYAN.
An Improved Apparatus for Tying and Building Scaffolding.
We FRANCIS JOHN RYAN, FRANCIS JOHN RYAN, Junior, and ALFRED DANIEL RYAN
Builders & Contractors all of Hillbrow Works, Plough Road Clapham Junction, in
the County of London 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 an improved apparatus for tying and building scaffolding,
and has for its object to provide means whereby scaffolding of various kinds can be
rapidly and securely tied and built up, without the aid of ropes, spikes, bolts or
screws, and entirely without damage to the scaffold poles.

page_text: And in order that this our invention may be the more readily understood and
carried into practical effect reference is hereby made to the accompanying sheets of
illustrated drawings wherein :-
Fig. 1. is a perspective view of a standard iron constructed according to our
invention.
Fig. 2. a similar view of a set of standard gantry hooks and irons.
Fig. 3. is a like view of a modified form of gantry hooks & irons.
Fig. 4. represents a ledger hook & chains.
Fig. 5. is a view of a set of bracing or hemping chains or hooks.
Fig. 6 shews a side elevational diagramatical view of the ledger chain tying chain
and irons in actual use.
Fig. 7. a plan diagramatical view of Fig 6. while
Fig. 8. is a view of the various chains and irons, the positions of the poles being
indicated by dotted lines.
Referring to the drawings wherein like letters of reference indicate similar parts
throughout the drawings a (Fig 1.) is an iron or other plate or strap having at, or
near, the top and bottom thereof a cross piece or strap a', which cross-pieces or straps
are drawn out and turned up at their ends to form open hooks a² large enough to
receive the various laps of the tying chain (Figs. 6, 7, & 8.)
This upright strap and cross-piece we identify as the standard iron.
The plate or strap as of the standard iron is intended to be placed against the
upright or standard pole and held in position if desirable by a fixing or small
chain 6 (Fig. 8.) which is made with a ring at one end and a hook at the other.
When this fixing chain is employed we place the ring 61 at the end of this chain
over one of the hooks a²; then the chain is passed partly around the pole or standard,
over the opposite hook a³, drawn tight and made secure by the hook at the other
end. By this means the standard iron is fixed to any part of the standard pole ready
to receive the ledger The said hooks a² are so shaped as to conform to the rotundity of
of the pole and throw the weight of the scaffold upon those parts of the hooks
which are supported by the standard pole.
The ledger or cross pole 2 of the scaffold is secured to the standard pole 1 by
means of a ledger iron and links and a tying chain, the former consisting of a hook c
of similar shape to the hooks a², connected to links c¹ adapted to hook at their
ends c' to hooks a* The tying chain d is connected by a ring d to one of the
hooks a² upon the standard iron and passed over the ledger iron hook aforesaid and
so on around the ledger and standard poles backwards & forwards through the hooks
of the standard and ledger irons, until its length is exhausted (see figs 6, 7 & 8).
The tying is secured by a hook d² at one end of the tying chain to any one of
the links most convenient for the purpose.
For bracing, hemping, or othe purposes, where great strength is required, we
employ a double chain e (fig 5) having hooks e¹ attached at each end.
This chain is placed squarely or diagonally across the poles to be tied, the tie
being completed by the tying chain in the manner before described.
For gantry
and all independent scaffolds (whether erected with poles or square timber) where
great strength is required and hemping not needed we prefer to employ the double
irons shewn in Figs. 2 & 3. If desirable we may dispense with the auxilliary
hooks (fig. 3) in order to lessen the cost of manufacture. Where employed,
these hooks would engage with the links of an auxilliary chain (not shown) provided
for greater strength.
Having now particularly described and ascertained the nature of my said
invention & in what manner the same is to be performed, I declare that what
I claim is :-
1. The improved apparatus for tying and building scaffolding, substantially as
described & shewn.
2. In apparatus for tying and building scaffolding the plate or plates a having:
1 1
2
1
1
0
1

page_text: bracing or hemping chain e provided with hooks e¹ all arranged, combined, and
operating substantially as and for the purpose described and illustrated.
1005
F. J. RYAN
F. J. RYAN JUN
A. D. RYAN
9 Cologne Road Battersea.