Improvements in the Construction of Ladders and the like.
Year: 1896

page_text: Date of Application, 31st Oct.. 1896-Accepted, 19th Dec., 1896
COMPLETE SPECIFICATION.
Improvements in the Construction of Ladders and the like.
We, JOHN HOLROYD, of No. 40 Rugby Place, Legrams Lane, l'ainter and
THOMAS RANSON BARRAN of No. 15 Simes Street, Cabinet Maker, both of
Bradford in the County of York, 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 certain improvements in ladders, and has for its object
the construction of same in such a manner that they may be put together in a
number of sections or short lengths to form any length of ladder desired, and in
such a manner that when coupled together the ladder is rigid, and further to so
arrange the same that two or more of such sections may be connected together in
an easy and efficient manner as to form trestle steps.
In order that our invention may be fully understood we will describe the same
in detail by making reference to the accompanying sheet of drawings in which
Fig. 1 represents a view of one of the sections or short length of ladder
constructed according to our invention.
Fig. 2 is a longitudinal section on line a. b.
Fig. 3 a view of two portions connected together.
Fig. 4 a section of same on line c. d, and
Fig. 5 a sectional view of two portions connected together to form trestle
steps.
The strings A. A. as will be seen from Fig. 1 are not parallel but converge
towards the top, and support the treads B. secured therein in any convenient
manner, the top and bottom tread or stave B₁ in each section are formed by
preference rectangular. Each end of the respective strings A. A. are cut with a
groove C. of sufficient size as will admit of its receiving one of the before mentioned
treads or staves B'. The top tread or stave B' in each length protrudes beyond
the outside of the strings A. A.
On placing two sections together as shewn by Fig. 3 the top tread or stave B¹
of the bottom length enters the grooves C. cut in the bottom of the strings A. A. of
the top length and the bottom tread or stave B' of the top length enters the
grooves C. cut in the strings A. A. of the bottom length, thereby forming a
strong union between the two lengths, thus forming one complete ladder. Any
number of lengths may be joined together in this manner to form the length of
ladder required.
As a further means of securing the two sections or lengths together we may pass
bolts F. F. through the strings A. A. as shewn by Fig. 3.
By forming the ladder in sections in the manner described, it will be easily
understood that the same may be taken from together and packed in a much more
convenient form for transit than is the case with ladders of the ordinary
construction.
By taking two or more sections or lengths and connecting same together at their
top ends by means of bolts G. or the like somewhat in the manner shewn by Fig. 4
we are enabled to readily form a light and strong trestle.

page_text: Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
1. The construction of long ladders from short sections by means of the
strings A. A. engaging with the treads or staves B' all arranged substantially in
the manner as berein before shown and described.
2. Ladders having the strings A. A. grooved at the ends for engaging with the
treads or staves B' substantially in the manner as herein before described.
Dated this 30th day of October 1896.
JOHN WAUGH,
Agent.