Improvements in Hooks for Use in connection with Ladders and the like.
Year: 1898

page_text: PROVISIONAL SPECIFICATION.
Improvements in Hooks for Use in connection with Ladders and
the like.
I, HERBERT CHARLES OSBORN, of 59, Eastbury Grove, Chiswick Lane, in the
County of Middlesex, House Decorator, do hereby declare the nature of this in-
vention to be as follows:-
1. Two strips of wrought iron or steel about one and a half inches in width
about a quarter of an inch in thickness and the one strip about twenty two inches
in length and the other about thirty one inches are pivoted together one end of
the shorter strip being pivoted at such a point on the other one that the two oppo-
site ends are level.
2. The strips are bent sideways towards each other at an obtuse angle and
about eleven inches from the level ends, and the projecting end of the longer
strip is bent sideways at a similar angle but in the opposite direction. The two
level ends are bent over so as to form hooks about an inch and a half in depth
and two inches in inside width. The projecting end of the longer strip is bent
over in the opposite direction below the pivot so as to form a similar but deeper
hook.
3. Two other strips of the same material width and thickness and both about
eleven inches in length are welded onto the first two strips below the two hooks
and about an inch above the inward bend of the first strips at right angles and
flat side to flat side and so that one end of each of the second strips projects in-
wards from the sides of the first strips about one inch.
4. These second strips are bent over to form hooks about four inches and a
quarter in inside width on the same side of the first strips as the single hook on
the longer one of them and so that the ends of each of the second strips are level
and parallel.
5. One or more holes are made in these last mentioned hooks near the un-
welded ends and corresponding holes in the metal opposite to them one set of holes
on each arm being screw threaded and one or more holes are made in a like
manner in the single hook of the longer arm with corresponding holes opposite
and screw threaded on one side.
6. To use the hook clamps the single hook of the longer arm is passed round a
rung of the ladder from the back and secured in its position by a thumb screw
passing through one of the unthreaded holes and screwing into the threaded
hole opposite this rung being at such a distance below the eaves or other structure
against which the ladder rests that upon the arms of the clamp being closed up-
wards with the side hooks clasping the sides of the ladder the two end hooks may
grip onto the gutter of the roof or the top of the wall the side hooks being secured
to the sides of the ladder with thumb screws passed through the holes in a manner
similar to that by which the end hook is secured to the rung of the ladder.
7. The clamps are also used in the place of ropes for joining two ladders
together by reversing their position so that the single hook of the longer arm may

page_text: hang onto a rung of the lower ladder at the required height but in front while
the bottom rung of the upper ladder rests upon the two hooks at the other end the
side hooks being fixed to the sides of the ladder in the same manner as before.
Dated this 30th day of July 1898
COMPLETE SPECIFICATION.
Improvements in Hooks for Use in connection with Ladders and
the like.
I, HERBERT CHARLES OSBORN, of 59, Eastbury Grove, .Chiswick Lane, in the
County of Middlesex, House Decorator, do hereby declare the nature of this in-
vention and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
1. Two strips of wrought iron or steel A A about one and a half inches in
width about three sixteenths of an inch in thickness and about one foot in length
are bent over at one end so as to form hooks about an inch and a half in depth
and two inches in inside width.
2. Two other strips of the same material width and thickness and about eleven
inches in length are welded onto the first two strips at right angles and about two
and a half inches from the unbent ends and flat side to flat side and so that one
end of the second strips projects from the sides of the first strips A. A about one
inch.
3. These second strips are bent over to form hooks B B about four inches and a
quarter in inside width on the opposite side to the hooks on the first strips and so
that the ends of each of the second strips are level and parallel.
4. One or more holes are made in these last mentioned hooks near the un-
welded ends and corresponding holes in the metal opposite to them these last
mentioned holes being screw threaded.
5. The first strips A A are jointed at the unbent ends onto two other strips of
the same material length and thickness and width C C by means of ordinary
screw bolts and nuts and so that the joints work freely.
6. The other ends of the strips CC are jointed together so that the side
hooks B B are turned inwards towards each other and onto them is jointed
another strip 1 of the same material and dimensions as the last strips CC the
three strips being connected in one joint by means of an ordinary screw bolt and
nut and so as to work freely.
7. This last mentioned strip D is perforated from end to end at intervals of
about an inch with screw threaded holes and to it is attached by means of an
ordinary thumbscrew the longer end of a hook E which is formed by bending a
strip of the same material width and thickness and about eleven inches in length
so as to form a hook about three inches in depth and two and a half inches in in-
side width on the same side of the apparatus as the hooks B B and in the front of
this hook E near the end are pierced one or more holes with corresponding holes
opposite to them the last mentioned holes being screw threaded.
:
8. To use the apparatus the hoop E is passed round a rung of the ladder from
the back and secured in its position by a thumbscrew passing through one of the
unthreaded holes and screwing into the threaded hole opposite this rung of the
ladder being at such a distance below the eaves or other structure against which
the ladder rests that upon the arms A. A being closed upwards with the hooks BB
clasping the sides of the ladder the two end hooks of the arms A A may grip

page_text: onto the gutter of the roof or the top of the wall or the scaffolding or other struc-
ture against which the ladder rests the hooks B B being secured to the sides
of the ladder by thumb screws passed through the holes in a manner similar to
that by which the hook E is secured to the rung of the ladder and the whole
being adjusted by the thumbscrew which secures the hook E to the joint 1 by
means of the holes in the latter.
9. In order to use the apparatus in the place of ropes for the purpose of join-
ing two ladders together the position described in the last paragraph is reversed
the hook E being hung onto a rung of the lower ladder at the required height.
while the bottom rung of the upper ladder rests upon the two hooks at the end
of the arms A A the hooks B B being fixed to the sides of the upper ladder
in the same manner as before.
Having now particularly described and ascertained the nature of my said in-
vention and in what manner the same is to be performed I declare that what
I claim is:-
1. The means of securing ladders to roofs walls scaffolding and the like and of
preventing the same from slipping substantially as described and illustrated.
2. The means of securing ladders together substantially as described.