IMPROVEMENTS IN LADDERS FOR FIRE ESCAPES, PAINTING PURPOSES AND GENERAL USE
Year: 1886

page_text: WILLIAM OWENS JENKINS 20 Fynone Street, in the Town of Swansea, in the
County of Glamorgan, Stone-cutter, do hereby declare the nature of the said
invention for IMPROVEMENTS IN LADDERS FOR FIRE ESCAPES, PAINTING PURPOSES
AND GENERAL USE, to be as follows:-
1. In place of the ordinary double Ladders used chiefly as Fire Escapes, being
one ladder sliding over the top of the other, I make my Treble Ladder of three
simple ladders to slide inside of each other in a true telescopic fashion.
2. By simply turning a hand lever fixed on a spindle with sheaves I coil or
uncoil a steel rope which increases or decreases the length of my Treble Ladder.
The top and middle ladders move simultaneously.
3. Although the total length of my Treble Ladder is nearly one third less than
any double ladder, the same point or object can be reached.
W. D. REES,
Agent for the Applicant.
Treble Ladder.
I, WILLIAM OWENS JENKINS, 20 Fynone Street, in the Town of Swansea in the
County of Glamorgan, Stone Cutter do hereby declare the nature of the said
invention for IMPROVEMENTS IN LADDERS FOR FIRE ESCAPES, PAINTING PURPOSES
& GENERAL USE and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
1. In place of the ordinary double ladders used chiefly as Fire Escapes, being
one ladder sliding over the top of the other, I make my Treble Ladder of three
simple ladders to slide inside of each other, in a true telescopic fashion.

page_text: 2. By simply turning a hand lever fixed on a spindle with sheaves, I coil or
uncoil a steel rope, which increases or decreases the length of my Treble Ladder.
The top and middle ladders, move simultaneously.
3. Although the total length of my Treble Ladder is nearly one third less than
any double ladder the same point or object can be reached.
"
In the accompanying drawings,
Fig. 1 is a side elevation.
"
2 is a plan.
Section D. E. is a transverse section on line D. E. shewing an end view of side
friction rollers.
Section F. G. is a transverse section shewing the top and bottom friction rollers.
Section H. I. is a transverse section shewing the sides and steps only.
On the ladder A. at a convenient height from the ground, I fix a spindle with
sheaves or drums on each end marked J. K. The sheave J. acting as a ratchet, is
provided with a suitable pawl in the manner shewn.
One end of a steel or copper rope is fastened to the sheave J, afterwards carried
up to a pulley near end of A, returns inwards round the side friction pulleys or
rollers at bottom of B; upwards to an opposite pulley at end of A, then returns
outwards to the sheave K. to which it is fixed.
Another steel or copper rope, one end of which is fastened to end of A; carried
up to a pulley near end of B; returns inwards round the side friction rollers at
bottom of C, upwards to an opposite pulley at end of B, then returns outwards, and
the other end of the rope is fastened to end of A¹
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. The construction and application of a Treble Ladder for the use of Firemen,
Painters, and for general purposes, operating in the manner, and for the purpose
herein before described and represented in the accompanying drawings.
.