Improvements in Living ACKS.
Year: 1897

page_text: We, WILLIAM FLINT and ARTHUR JAMES TAYLOR trading as Hydes and Wigful
of Stanley Street, Sheffield in the County of York, Engineers and Ironworkers, do
hereby declare the nature of this invention to be as follows:-
That is to say It relates to lifting-jacks of the class used in connection with -
carriages or other road vehicles, and consists in constructing same so that they.
may be quickly adjusted or adapted to meet the varied requirements of the
vehicles in connection with which they are designed to be used.
In carrying our invention into effect we make use of a hollow standard in which
we arrange to slide a bar carrying at its upper end a block for contact with the
parts to be raised.
To this sliding bar are pivotted as hereinafter described connecting links which
extend to be pivottally secured to the operating lever mounted upon the hollow
standard. The mounting of this lever is so arranged that when it is operated to
raise the weight or perform the functions desired of it, the centre line of the link
is moved slightly past the centre of the lever's fulcrum, by which means the
sliding bar is locked in its raised position, by reason of the operating lever on a
part secured thereto coming in contact with the hollow standard which acts as a
stop-piece.
To enable the sliding bar to be adjusted or adapted to the varied heights of
objects that are desired to be raised, according to one arrangement we form a screw
thread upon the sliding bar so that it may be screwed into the block to which its
operating links are pivotted thus the height of the sliding bar may be regulated by
rotating same as will be well understood.
Or again, instead of forming a screwed thread upon the sliding bar we may form
a series of holes in it so that the block referred to may be secured by a pin being
inserted through it and any one of these holes.
7
Improvements in Living ACKS.
We, WILLIAM FLINT and ARTHUR JAMES TAYLOR trading as Hydes and Wigfull
of Stanley Street, Sheffield in the County of York, Engineers and Ironworkers, do
hereby declare the nature of this invention and in what manner the same is to
Price 8d.1

page_text: be performed, to be particularly described and ascertained in and by the following
statement
That is to say-It relates to lifting jacks of the class used for or in connection
with carriages or other road vehicles, and consists in constructing same so that they
may be quickly adjusted or adapted to meet the varied requirements of the vehicles
in connection with which they are designed to be used.
In the accompanying sheet of drawings which are illustrative of our invention :-
Fig. 1 is an elevation showing the lifting jack as when raised to lift its load.
Fig. 2 is a similar view to fig. 1 but shows the lifting parts of the jack in their
positions before being raised.
Fig. 3 is a drawing in detail showing the formation of certain of the parts
hereinafter described.
Fig. 4 is a similar view to fig. 1 but illustrates a modified construction of our
improved jack.
Fig. 5 is a view of the jack illustrated by fig. 4 but as seen in the direction
indicated by the arrow a¹.
Figs. 6 and 7 show modifications hereinafter explained.
*In carrying our invention into effect we make use of a hollow standard a in which
we arrange to slide the bar b carrying at its upper end a block c for contact with the
parts to be raised.
To this sliding bar bare pivotted at e as hereinafter described, connecting links & d
(or only one of these may be used if desired) which extend to be pivotally secured
at f to the operating lever f mounted by its fulcrum pin f2 upon the standard a.
The mounting of this lever f is so arranged that when it is operated to raise the
weight or perform the functions desired of it in which case the parts assume the
positions shown by fig. 1 the centre line of the links d d¹ are moved slightly past
the centre of the line drawn through e to f2 by which means the bar b is locked in its
raised position by reason of the lever f (or if only one link d or d' is used then by
a part which is secured to this lever f) coming in contact with the hollow standard a
which acts as a stop-piece.
To enable the bar b to be adjusted or adapted to the varied heights of objects
that are desired to be raised, according to one arrangement we form a screw thread
upon this said bar 6 (see figs. 1, 2 and 3) so that it may be screwed into the block.g
to which its links d d¹ are pivotted, thus the height of the sliding bar b may be
regulated by rotating it to screw it into or out of said block g as will be well
understood.
Or again, instead of forming a screwed thread upon said bar we may form a series
of holes h in it so that the block g may be secured by a pink being inserted through
it and through any one of said holes h which may be brought into position relatively
with it, to enable this to be done, or the pivotal pin e may be made detachable and
so be used without the block g in which case the bar b is turned so that the holes l
will be in line with the said pin e. Or instead of said bar b having the openings h
made in it, it may have teeth m formed thereon as shown by fig. 6 so that a catch
or ratchet s may fall by gravity or be forced by a spring into contact therewith to
hold it as desired, or the block g may be formed to catch the teeth m, by swivelling
on its pivotal pin, as shown by fig. 7.
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. In a lifting jack of the class described the several parts constructed substantially
as herein specified and arranged in combination as set forth.
2. In a lifting jack, an operating lever, and its link or links, a screwed block to
which same are pivotally connected, and a sliding bar threaded to pass through said
block the same being constructed and arranged to operate in combination substantially
as herein specified,

page_text: 3. In a lifting jack, an operating lever and its link or links, a slotted block
pivotally connected to these links, a sliding bar having a series of holes made therein
and a pin for passing through said block and bar, the same being constructed and
arranged in combination substantially as herein specified.
4. In a lifting jack, an operating lever and its link or links, a slotted block
pivotally secured to the links, a sliding bar having ratchet teeth formed upon it and
a ratchet for holding said bar the same being constructed and arranged to operate in
combination substantially as herein specified.
5. In a lifting jack, an operating lever and its link or links, a slotted block
pivotally secured to the links, a sliding bar having ratchet teeth formed upon it
and a swivelling block arranged to catch and hold said bar the same being
constructed and arranged to operate in combination substantially as herein
specified.
Dated this 8th. day of November 1897.
WILLIAM FLINT,
ARTHUR J. TAYLOR,
Per Samuel Hey,
Agent