IMPROVEMENTS IN JACKS OR APPARATUS FOR RAISING OR LOWERING CARRIAGES AND OTHER WEIGHTS
Year: 1884

page_text: We, BENJAMIN THOMAS NEWNHAM of St. Pauls Carriage Works in the City of
Bath in the County of Somerset Carriage Builder, SIDNEY FRANCIS HAMPER of
Market Place Cirencester in the County of Gloucester, Tailor and Hosier and
CHARLES SHEPHERD of Temperance Place Holloway, Bath, do hereby declare the
nature of our invention for "IMPROVEMENTS IN JACKS OR APPARATUS FOR RAISING
OR LOWERING CARRIAGES AND OTHER WEIGHTS to be as follows: -
These improvements have for their objects to facilitate the lifting or raising of
carriages or other weights and of lowering the same and of sustaining those raised
objects in their raised position Also to effect economy in the manufacture of such
apparatus.
In carrying out our invention we form a base plate tripod or other suitable
support for an upright or pillar which pillar or upright is pierced with holes in
series. Upon this pillar slides a lever or arm by means of a slot or opening
therein nearer one end of it the sides of such opening of the lever being also
perforated to admit of a pin passing through both upright and lever to secure the
lever in its allotted position. Or in place of the lever sliding over the standard or
upright the lever may pass into and up or down between the parts of a fork, or
slotted opening of the standard. Or in place of the means of sustaining the lever
in its allotted position relatively to the standard, being a pin passing through
holes in those two members of the implement their maintenance of the relation
allotted may be secured by ratchet teeth formed upon the standard and a tooth on
the lever or teeth or ratchet teeth on each.
At the shorter end of the lever we provide a roller bearing which in operation
comes against the inclined or curved and recessed under side of another piece which
slides upon or in the standard or support and one or both sides of this piece are
adapted to be placed under or against the body to be raised or moved. Rollers
may be applied to the sliding piece to relieve the friction of contact thereof with
the other parts of the implement if desired for heavy work.

page_text: In operation the standard being in suitable position the lever member of the
implement is adjusted to the body to be lifted and at the same time the sliding
piece moved by that lever is so placed beneath or against that body that any
movement of the lever will move that body and the operator depressing the longer
end of the lever thereby moves the shorter end with its roller bearing along the
curved or inclined underside of the sliding pieces until the recessed part is
reached into which that roller bearing becomes engaged and the weight will remain
sustained in its position but upon force being applied to the longer end of the lever
to move it in the reverse direction it may without any difficulty be disengaged
and the piece and sustained body returned to its original position or otherwise.
Dated this 3rd day of April 1884

page_text: We BENJAMIN THOMAS NEWNILAM of St Pauls Carriage Works in the City of
Bath in the County of Somerset Carriage Builder SIDNEY FRANCIS HAMPER of
Market Place Cirencester in the County of Gloucester Tailor and Hosier and
CHARLES SHEPHERD of Temperance Place Holloway Bath do hereby declare the
nature of our invention for IMPROVEMENTS IN JACKS OR APPARATUS FOR RAISING
OR LOWERING CARRIAGES AND OTHER WEIGHTS and in what manner the same
is to be performed, to be particularly described and ascertained in and by the
following statement:-
These improvements in Jacks or apparatus for raising and lowering bodies have
for their objects to facilitate the lifting or raising carriages; or their wheels off
the ground during cleansing or other purposes and for sustaining such objects
in their raised position and lowering them. Also to effect economy in the
manufacture of such apparatus.
In carrying out our invention we construct the apparatus for raising sustaining
and lowering carriages and other bodies substantially as shown in the accompanying
drawings although the details may be somewhat varied according to circumstances
of work to be done.
In the drawing Figure 1 shews a side view of the jack in which the full lines
indicate the position of the parts as they are brought to a position of rest in a
raised position with the body lifted and the broken lines indicate the position
taken by the parts when the horn or support a, a', or a has been adjusted under
a body to be lifted and the pivot pin 6 has been passed through the standard C
and through the near and then the off sides of the forked part d of the lever B.
Figure 2 shews separately by side view the horned sliding piece A and Figure 3
shews a like view of its opposite side and Figure 2ª an underside view.
Figures 4 and 5 shew by plan and side views respectively a portion of the
lever B separately with a side view of the pivot pin b connected to B by a chain.
This apparatus is formed as a base or tripod stand C₁ supporting a pillar C but
this may be alternatively a plate or suitable ornamental or other shape of support.
This pillar C is pierced with a number of holes from one upwards, say six as in
drawing, and numbered there 1 to 6, in series one above another. Upon this pillar C
slides a lever fork d being part of the lever B, the two arms of this fork clasping
or passing around the standard C as well as around or over the sliding piece A.
The fork d of the lever B is at its outer end provided with a roller c carried by
a pin passing from arm to arm of the fork d through that roller c, which roller e in
use comes against the inclined underside of the piece a' of the slide A when one of
the horns a a' or a has engaged with some body to be lifted and has raised the
slide A and the sustained body until passing into the notch or recess as such
roller e serves to lock the lever B in its uppermost position for that particular
adjustment of the pivot pin bin hole (4) of the standard C, which forms the axis
of motion of that lever arm a are grooves in each side of the slide A for the
passage of the slide A, within the limit of the length of that groove a' over the
pin b as the lever B raises and lowers it as a³ are a pair of studs one on either side
of the slide A serving to engage with the recesses of the lever B and aid in the
proper adjustment of the parts, before lifting to the height of body to be lifted.
In some cases the head as may be utilized for lifting a body under which it has
been adjusted.

page_text: In operation the standard C being in suitable position, the weight to be raised,
by adjusting the slide A on the standard C, so that one of its projections engages
therewith and fixing the pin bin the lever B through the slide A and in the
standard C, is capable of being lifted. The tail end of the lever B is then
depressed raising the roller end e, rolling that roller e along the underside
of al until e falls into notch a³ locking the lever B against displacement by
downward pressure of slide A but yet so that a moderate pull upward of
the tail end of the lever B at once disengages that roller and the reverse
operation for lowering takes place, meanwhile the body has been kept sustained
by this automatic locking of the roller e and the simple operation of raising the
tail end releases it from the groove a³ without difficulty or the intervention
of another hand or attachment being required.
In place of the lever B sliding over the standard A the standard may be forked
and ths lever pass through it or in place of a pin to sustain the lever B and
standard A relatively ratchet teeth may be employed as the sustaining means, teeth
being formed on the standard and a holding tooth to engage them on the lever B
or a series on each.
Anti friction rollers may be applied in the walls of the opening a7 of the slide A
to run on the standard C if desired to lessen friction for heavy work.
Having now particularly described and ascertained the nature of our said
invention, and in what, manner the same is to be performed we declare that what
we claim is—
In a Jack or apparatus for raising or lowering-carriages and other weights-the-
combination of a standard, a sliding piece and an adjustable lever and pivot
therefor adapted to raise, to hold raised and be locked to and to lower such sliding
piece substantially as set forth.