Year: 1888

page_text: I, ARTHUR CHARLES STEVENS of Three Mile Cross, in the county of Berkshire,
Builder do hereby declare the nature of this invention to be as follows:-
My invention relates to an improved method of securing scaffolding poles, and it
consists in the use of suitably formed iron clamps for binding the poles together, thus
dispensing with the usual means of fastening them together by means of ropes.
According to my invention I form a hook of iron or other suitable metal with an
elongated tail which is screwed to receive a nut. The gripping part of the hook is
made of a flat square section, and is roughened on the inner surface to afford a good
grip on the pole. I then bore holes in the vertical scaffolding poles at suitable heights
to receive the hooks which support and bind the horizontal poles. The tail ends of
these hooks are passed through the vertical poles with the open sides of the hooks
uppermost. In these hooks the horizontal poles are laid. The hooks are then drawn
up by the nuts until they grip the horizontal poles, and bind them against the vertical
poles.
When it is undesirable to bore holes in the vertical poles I either use two vertical
poles placed close together so that the hook can pass between them, and use two square
washer plates preferably with curved ends-to clamp the vertical poles together and
form a support for the hook, or I fix a clamp to the vertical pole to receive the hook
immediately on one side of the pole. This clamp is made preferably made of two
metal plates bent in the middle of their lengths to embrace the pole and provided with
holes at the ends, to receive the hook at one side of the pole, and a binding bolt at
the other side. As an alternative the two clamping plates may be hinged together
at one end.
1
Th
1000
ROBT. ED. PHILLIPS, M.I.M.E.,.
70, Chancery Lane, London, W.C.,
Agent for the Applicant.

page_text: I, ARTHUR CHARLES STEVENS, of Three Mile Cross, in the County of Berkshire
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 :-
My invention relates to an improved method of securing or fixing together the
poles or members of scaffolding, and it consists in the use of suitably formed iron
clamps for binding the several poles or members together, thus dispensing with the
usual means of fastening them together by ropes and wedges.
According to my invention I form a hook of iron, or other suitable metal, with an
elongated tail which is screwed to receive a nut. The gripping part of the hook is
made of any suitable section and is preferably roughened on the inner surface to afford a
good grip on the pole or member it embraces. I fix the hooks to the vertical members
of the scaffolding at suitable heights to receive the horizontal or diagonal members,
either by passing the tails of the hooks through the vertical members and drawing
them up by nuts or their equivalents, or by fixing them to clamps adapted to be fixed
to the said members.
In order that my invention may be fully understood I will more particularly describe
it with the aid of the accompanying drawing throughout the several views of which
similar parts are marked with like letters of reference.
Figures 1. and 2. which are a front and side elevation respectively, show the
simplest method of carrying my invention into practical effect. A suitably formed
hook A. having a screwed shank a. is passed through a hole formed in the vertical pole
or member X. of the scaffolding, and is drawn up by a suitably formed nut a¹ screwed
on the shank a. of the hook A. thereby gripping the horizontal pole or member X' of
the scaffolding, and binding it tightly to the vertical pole or member X. When it is
undesirable to make holes in the poles or members of the scaffolding, the same
simple arrangement can be followed out as illustrated by Figures 3. and 4, by using
two vertical members X. X. placed as close together as will just allow the shank a. of
the hook A. to pass between them, a flat washer plate a² spanning the two members for
the nut a¹ to bear against.
Figures 5. 6. and 7, of the accompanying drawing illustrate another method of carrying
my invention in effect without making holes in the poles or members and also without using
duplex vertical poles or members. I use an iron clamp formed of two plates B. and B.,
each having a fixed coned or curved block b. and an adjustable coned or curved
block b', to embrace and grip the members, these blocks may be shaped and arranged
in any suitable and convenient manner, though I prefer the shape and arrangement as
illustrated. These plates B & B. are first clamped at the requisite height to the
vertical members of the scaffolding by the bolts C. and C., having fly or other suitable
nuts c. c. The plates B. and B. are provided with a series of holes b' etc. at one end
to receive one of the bolts C. so that the position of the adjustable blocks and 6¹

page_text: may be regulated, the said bolt preventing the outward movement of the said blocks
when the plates are being clamped to the pole, or other member of the scaffolding.
After the plates B. and B. are clamped in position the shank a. of the book A. is
passed through holes provided in the plates to receive it, and is drawn up by the
nut a' after the horizontal member X₁ is placed within the hook.
If desired plates B. and B. can be simply bent to embrace the member and be pro-
vided with suitable holes for the clamping bolts C. and hook A, but as the poles or
members vary considerably in diameter and section I prefer to use the adjustable
plates as herein before described.
Figure 8. of the accompanying drawing shows a further modification in which the
plates B. and B. are hinged together at one end by the pin 63 the other ends being
provided with suitable holes 62 etc., to receive the shank a. of the hook A. according
to the diameter of the pole or member to which it is to be fixed.
In the accompanying drawing the hook A. is shown adapted for fixing the horizontal
members of scaffolding to the vertical members thereof, but it will be obvious that
it is adapted for fixing diagonal members, and also vertical members to one another
by turning the hook round in its support.
I wish it to be understood that I do not limit myself to the exact construction and
arrangement of parts hereinbefore described, but hold myself at liberty to make
such alterations and modifications as fairly come within the spirit and scope of my
invention.
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:
1st. Securing the poles or members of scaffolding together in the manner set forth.
2nd. Fixing scaffold poles to one another by means of iron clamps as hereinbefore
described with reference to Figures 1. and 2. of the accompanying drawing.
3rd. Fixing scaffold poles to one another by means of iron clamps as herein before
described with reference to Figures 3. and 4. of the accompanying drawing.
4th. Fixing scaffold poles to one another by means of iron clamps as hereinbefore
described with reference to Figures 5. 6. and 7. of the accompanying drawing.
5th. Fixing scaffold poles to one another by means of iron clamps as hereinbefore
described with reference to Figure 8. of the accompanying drawing.
6th. In a clamp for fixing the members of scaffolding to one another, the combina-
tion of the plates, B. and B., the fixed coned or curved blocks b. and b., the sliding
coned or curved blocks and b', the clamping bolts C. and C, and the gripping
hook A., all combined arranged and operating as and for the purpose set forth.
7th. In a clamp for fixing the members of scaffolding together, the combination
with two plates hinged together and adapted to embrace one of the said members, of
the hook adapted to grip another member and lock both it and the clamping plates to
the first mentioned member, as and for the purpose set forth.
8th. In clamps for fixing together the poles or members of scaffolding, making the
said clamps adjustable to fit poles or members of any diameter or section, as herein-
before set forth.
TL1
ՐԴԿ
1000
ROBT. ED. PHILLIPS, M.I.M.E.,
70, 71 & 72, Chancery Lane, London, W.C.,
Agent for the Applicant.