Improvements in Hinges applicable for use in connection with Step-ladders, Tressels, and similar other Articles.
Year: 1892

page_text: Date of Application, 3rd Dec., 1892
Complete Specification Left, 4th Sept., 1893-Accepted, 7th Oct., 1893
PROVISIONAL SPECIFICATION.
Improvements in Hinges applicable for use in connection with
Step-ladders, Tressels, and similar other Articles.
We, JACOB KOEHLER and CONRAD KOEHLER both of Pilling Street, Rochdale
Road, Manchester, Lancashire, Step-ladder Manufacturers, do hereby declare the
nature of this invention to be as follows, that is to say :-
It consists of improvements in the construction and formation of hinges applicable
for use in connection with tressels, and similar other articles by the following or
carrying out of which, such hinges are cheaply produced and are strong and
efficient for the purpose for which they are to be employed.
In constructing these hinges we form an additional lip or projecting piece
preferably on that part carrying the pivotal pin, the said part being most suitable
for attachment to the legs or support of step-ladders although it might be fixed to
the step-part of same while its attachment may be to either of the parts forming
the tressels or like articles.
In the other part of the hinge which is for attachment to or for the former part
to be coupled with, we form an elongated pivotal hole or slot for the reception of
the pivotal pin above described, its position therein being secured by the attach-
ment of the parts in their respective positions on the ladder, tressel or the like.
By this elongated slot allowing the pivotal pin to move freely within it yet
retaining same from moving out of actual position or contact therewith, said
moveable part may be brought so that at one position in said slot it may freely
swivel or rotate while in another position its projecting piece above described may
be made to enter a socket formed in suitable proximity with said elongated slot to
lay hold of said projection when it has thus been inserted, by which means when
said ladder or other part to which said hinge is attached, is in use it is firmly and
securely held.
The parts forming the hinge as above described do not require rivetting together
to secure perfect operation, while their peculiar formation facilitates their formation
in cast metal.
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1
1003
J. KOEHLER,
C. KOEHLER,
Per Samuel Hey,
Agent.
COMPLETE SPECIFICATION.
Improvements in Hinges applicable for use in connection with
Step-ladders, Tressels, and similar other Articles.
We, JACOB KOEHLER and CONRAD KOEHLER both of Pilling Street, Rochdale
Road, Manchester, Lancashire, Step-ladder Manufacturers, 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, that is
say:-
It consists of improvements in the construction and formation of hinges applicable
for use in connection with step-ladders, tressels and similar other articles by the
following or carrying out of which, such hinges are cheaply produced and are
strong and efficient for use purpose for which they are employed.
In order that our said invention may be more readily understood, we have hereunto
PD O7

page_text: appended a sheet of drawings to which reference is made by figures and letters, in
the following description.
Fig. 1 is side elevation of a step-ladder with our improved hinge applied and
shows same as open ready for use.
Fig. 2 is a similar view to Fig. 1 but shows the ladder folded as when out
of use.
Fig. 3 is a back view of step-ladder shown by Fig. 1 as seen in the direction of
arrow x.
Fig. 4 is a side view, enlarged scale of our improved hinge as when in an open or
locked position.
Fig. 5 is a similar view to Fig. 4 but illustrates the hinge as seen in the opposite
direction.
Fig. 6 is also a similar view to Fig. 4 but shows the parts forming the hinge, in
other positions hereinafter described.
Fig. 7 is illustrative of parts shown by Fig. 4 and as seen in the direction of the
arrow y.
In constructing hinges in accordance with our invention, we form an additional
lip a on the part which carries the pivotal pin c, this said part being most
suitable for attachment to the legs or supports d although it might be fixed on the
step-part e if desired, while its attachment may be to either of the parts forming
tressels or like articles as will be readily understood.
In the other part of the hinge, we form the hole or slot 9 for the reception of
the pivotal pine which works loosely therein, its position being secured by the
attachment of the several parts in their respective positions on the step-ladder or
like articles. By the hole or slot g allowing the pin c to move freely within it, but
still keeping said pin from moving out of position or contact with it, the said
movable part may be brought into the position shown by Figs. 2 and 6 in which
position it is free to swivel or rotate, while when moved into the position shown by
Figs. 1 and 4 the lip or projection a enters the slot formed on the part f, by
which means the ladder or like article is firmly and securely held in its open
position in which it is used.
b
The parts b and forming the above described hinge do not require rivetting
together in any way to secure their perfect operation while their peculiar forma-
tion further facilitates their formation in cast metal.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what
we claim is.
1. Hinges formed and constructed substantially as herein set forth and described.
2. The combination in step-ladder hinges of parts carrying pivotal pins and
projecting lips with corresponding grooves and sockets to receive same substantially
as specified.
Dated this 2nd day of September 1893.
JACOB KOEHLER,
CONRAD KOEHLER,
Per Samuel Hey,
Agent.