Improvements in Step Ladders.
Year: 1886

page_text: Date of Application, 15th July, 1886.
Complete Left, 15th Apr., 1887.
Complete Accepted, 15th July, 1887
Improvements in Step Ladders.
I JEREMIAH OLIVER NICHOLSON of No. 1. Halliday Place Lovain Row Tynemouth in
the County of Northumberland Builder do hereby declare the nature of this invention
to be follows:-
My Invention consists in the application and arrangement of step ladders combined
with Improvements for making a most compact light and durable telescope ladder, for
convenience of packing and adjusting to any required height. This ladder can be
used for private or business porposes or anything that step ladders are required for.
My Invention consists of the following parts. Two or more ladders sliding one
within the other with iron brass or wood guide strips fixed in the strings of one
ladder and sliding in groves in the strings of the other ladder. The strings of the
bottom ladder being held together by dovetailed pieces across back edges and
bottom tread being a fixture the other treads being pivoted on back edge
with wood iron or brass pins. Also chimed into string quadrant shape so as
to allow them to turn back and upper ladder to slide up or down in front
of treads stopping on bottom tread and also stop on any tread for height required.
Top of the bottom ladder strings capped and kneed for strength. Upper ladder
all fixed steps and top, back stays to slide on the same principle as front ladder
bound together with cross stays. Two steel springs dropping into notches of guide
strips at any required height. The springs to be worked with crank and two rods
from the centre of cross stay of the bottom half hinged at the top of the ladder with
two bolts. This ladder can be made with or without back stays.
Dated thin 12th dose of I.1. 1986

page_text: I, JEREMIAH OLIVER NICHOLSON of No. 1 Halliday Place Lovain Row Tynemouth in
the County of Northumberland 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:-
Fig. 1 is a section of step ladder when shut. Fig. 2 is a section of step ladder
when extended. Fig. 3 is a front view when shut. Fig. 4 is a front view when
extended. Fig. 5 is a view of back stays when shut. Fig. 6 is a view of back stays
when extended. Fig. 7 and 8 is a view of ladder without back stays. The same Letters
indicate the same parts in all the Figures.
My Invention consists in the application and arrangement of step ladders combined
with improvements for making a most compact light and durable telescope ladder for
convenience in packing and adjusting to any required height. This ladder can be used
for private and business purposes or anything that step ladders are required for.
My Invention consists of the following parts two or more ladders sliding one within
the other with iron brass or wood guide strips AA fixed in the strings of one ladder
and sliding in the grooves B B in the string of the other Ladder. The strings of the
bottom ladder being held together with iron brass or wood straps C Cacross back edge
and turned up sides of strings. Bottom tread D being a fixture the other treads E E E
being pivoted on back edge with wood iron or brass pins also trenched into strings
quadrant shape F FF so as to allow them to turn back and upper ladder to slide up or
down in front of the treads stopping on bottom tread D and also stop on any tread for
height required. Top of the bottom ladder strings having two iron straps GG with
grooves through them for guide strips A A to pass through and one turned over front
edge of upper ladder at H which form a stop and prevents the ladder from sliding out.
Upper ladder all fixed treads. Back stays to slide on the same principle as the front
ladder bound together with cross stays K K K behind cross stay at top end of bottom
half is pivoted a tumbler L with a steel spring S which holds it in the notches N N N
for any required height. The rod O passes through the brackets PP which hinge the
back stays to the ladder. The cord R passing through pulleys Y Y on bottom half
and knotted through holes U U which regulates to height required.
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 Ĭ claim is
1st. The arrangement of one or more ladders sliding one within the other.
2nd. The movable treads EEE.
3rd. The strings trenched out quadrant shape FFF to allow the treads to turn
back.
4th. The arrangement of cords R for adjusting to any for making a most useful and
accomodating ladder for any purpose they may be used for as the same is herein
before set forth and described and illustrated by the accompanying Drawings.
Dated this 13th day of April 1887
JEREMIAH OLIVER NICHOLSUN.