A New or Improved Carriage Jack, also applicable for Lifting Purposes generally.
Year: 1892

page_text: Date of Application, 25th Aug., 1892
Complete Specification Left, 25th May, 1893-Accepted, 1st July, 1893
A New or Improved Carriage Jack, also applicable for Lifting
Purposes generally.
I, JOHN CHARLES RIMMINGTON, of 17 Copleston Road, Denmark Hill, in the
County of Surrey, Ironmonger, do hereby declare the nature of this invention to
be as follows:-
-
This invention relates to a new or improved jack for lifting carriages, and for
other purposes.
In carrying this invention into practical effect I provide a suitable upright or
standard mounted upon a foot or bed-plate, and divided vertically so as to form a
guide for a vertical slide. The said slide is slotted vertically, one side of the slot
being provided with a number of ratchet teeth. A lever is pivoted to one side of
the upper end of the upright or standard, its shorter arm being pivoted to two
depending links which are united at their lower ends by a cross bar lying within
the slot of the said slide. These links are so weighted that they normally lie in
engagement with the ratchet teeth on the slide so that the latter is raised by the
depression of the longer arm of the lever. The short arm of the lever is turned
upwards at right angles so that when the longer arm is in its depressed position
and the weight of the carriage or other article is bearing upon the slide, the strain
on the links acts across the pivot upon which the lever works so that the latter
does not tend to move on its pivot by reason of the weight.
In order to relieve the strain on the lever so that the same may be operated a
second time to still further lift the carriage or other article, I provide the vertical
slide with a number of indents down one side in which may be turned a suitable
latch or catch pivoted to the standard. When the slide has been lifted to the
full extent obtainable by one movement of the lever, this latch is turned into one
of the hereinbefore mentioned indents so as to retain the slide in position while the
lever is again lifted to bring the cross bar carried by the links into engagement
with another of the ratchet teeth, the latch is then withdrawn from the slot and
the lever again depressed. This process is repeated as often as may be necessary
to raise the carriage or other article to the required height. Instead of this latch
arrangement a spring pawl may be mounted on the standard to engage with a
ratchet carried on the slide, the descent of which will be prevented by means of
the said pawl as will be well understood.
.
10
CASTLE SMITH,
Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.
COMPLETE
SPECIFICATION.
A New or Improved Carriage Jack, also applicable for Lifting
Purposes generally.
I, JOHN CHARLES RIMMINGTON, of 17 Copleston Road, Denmark Park, in the
County of Surrey, Ironmonger, 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 a new. or improved jack for lifting carriages and for
other purposes.
In carrying this invention into practical effect I provide a suitable open upright
or standard mounted upon a foot or heel plate and divided vertically so as to form

page_text: a guide for a vertical slide. The said slide is slotted vertically, one side of the
slot being provided with a number of ratchet teeth. A lever is pivoted at one
side of the upper end of the upright or standard its shorter bifurcated arm being
pivoted to two depending links united at their lower ends by a cross bar lying
within the slot in the vertical slide. These links are so weighted that the cross
bar connecting their lower ends normally lies in engagement with, the ratchet
teeth on the vertical slide so that the latter is raised by the depression of the
longer arm of the lever.
The shorter arm of the lever is turned upward so that when the longer arm is
in its depressed position and the weight of the carriage or other article is bearing
upon the vertical slide the strain on the links acts slightly behind the front on
which the lever works so that the latter does not tend to move on its pivot by
reason of the weight.
In order to relieve the strain on the lever so that the same may be operated a
second time to still further lift the carriage or other article, I provide the vertical
'slide with a number of indents down one side into which may be forced a plate
sliding on the top of the upright or standard.
And in order that my invention may be more fully understood and carried into
practice I will now proceed to describe the same with reference to the accompanying
drawings.
Fig. 1 is a side elevation, Fig. 2 a front elevation, Fig. 3 a side elevation with
the vertical slide slightly raised and Fig. 4 a horizontal section at a of Fig. 3.
The open upright or standard a secured to the base is vertically divided as
shown in Fig. 4 so as to form a guide for the vertical slide c. Said slide c is slotted
vertically and one side of the slot is provided with ratchet teeth c¹.
Pivoted at a is a lever d to the shorter bifurcated arm of which are pivoted
links e united at their lower ends by a cross bar flying within the slot of the
slide c.
Sliding horizontally on the
opening for the passage of the
made to engage with one of a
slide c.
top of the standard a is a plate g provided with an
slide a through it and so constructed that it may he
number of indents formed down one side of the
To raise the slide a the upper end of which is placed under the article to be
raised, the longer arm of the lever d is raised, thus lowering the cross bar which,
owing to the manner in which the links e are weighted, is caused to engage with
the ratchet teeth e. The longer arm of the lever d is then depressed, so raising
the cross bar f and with it the slide c.
Should it be desired to still further raise the slide c the plate g is moved so as
to engage with one of the indents in the side thereof and so retain it in its raised
position until by the operation of the lever the cross bar has been again lowered
when said plate g is forced out of engagement and the longer arm of the lever
again depressed.
The shorter arm of the lever d is curved as shown so that when the longer arm
is in its depressed position the strain on the links e acts slightly behind the pivot
on which the lever'd works, so that the latter does not tend to move on its pivot by
reason of the weight on the slide e.
'
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed 1 declare that what I
claim is
A jack for lifting carriages and for other purposes constructed substantially as
described and ascertained in the accompanying drawings.
Dated this 25th day of May 1002
CASTLE SMITH,
Invention" Office, 54, Fleet Street, London, E.C.,
Agent for the Applicant.