An Improved Lifting-jack.
Year: 1890

page_text: Date of Application, 21st June, 1890
Complete Specification Left, 29th N.v., 1890-Accepted, 3rd Jan., 1891
PROVISIONAL SPECIFICATION.
An Improved Lifting-jack.
1, JOHN PITT BAYLY, of 18 Fulham: Place Paddington, in the County of London,
Patent Agent, (a communication to me from abroad by Spencer Hall of Racine
Wisconsin, U.S.A., Inventor,) do hereby declare the nature of this invention to
be as follows:-
This invention relates to an improved lifting jack whereby heavy packages, goods
and the like can be readily and conveniently lifted.. The invention has for its object
to provide a lift, the lever of which can be readily adjusted to any desired height upon
its standard, so as to raise goods from any height to any required elevation.
The invention comprises a standard, preferably of round section, having a loop at
its upper end and a substantial base at its lower end. A loose collar is adapted to
slide vertically along the standard and to be secured thereto in any position by a set
screw or other suitable device. A lever of convenient length is pivoted a short
distance from one end to one side of the collar, and its longer end is formed with a
handle. A suitable latch to retain the lever in position is also pivoted to the collar at
right angles to the lever.
Dated this 21st day of Inno 1800
J. P. BAYLY,
Applicant.
COMPLETE
SPECIFICATION.
An Improved Lifting-jack.
I, JOHN PITT BAYLY, of 18 Fulham Place, Paddington, in the County of London,
Patent Agent, lo hereby declare the nature of this invention (a communication to
me from abroad by Spencer Hall, of Racine, Wisconsin, U.S.A. Inventor,) to be as
follows:-
My invention relates to lifting-jacks; and it consists in certain peculiarities of con-
struction and combination of parts to be hereinafter described with reference to the
accompanying drawings and subsequently claimed.
In the drawings,
Figure 1 represents a plan view of my device with the standard thereof in horizontal
section on line 1-1 of the succeeding figure ;
Fig. 2, a side elevation;
Fig. 3, a transverse section on the line 3-3, Fig. 1 the standard being omitted; and
Fig. 4, a detail elevation, partly in section, on line 44 of Fig. 2.
Referring by letter to the drawings; A represents the standard of my device, this
standard being preferably provided with a base B and hand-grip C. Loosely
arranged on the standard A is a collar D, and pivotally connected to this collar-is a
lever E and latch F, said lever and latch being at right angles to each other. As
shown in Fig. 3, the pivot G of the lever E is detachably connected to the collar D,
and the pivot II of the latch F may be likewise connected to said collar; or the
latter and both pivots may be in one piece.
The collar D and parts connected thereto are moved up and down with relation
to the standard A, and the lever E moved on its pivot to bring the notched end E
under the object to be lifted. By bearing down on the handle portion of the lever E
the weight of the object to be lifted causes the collar D to bind on the standard A at
the point to which said collar has been adjusted, and said lever being brought to a
horizontal position the latch F is engaged therewith to bold the parts in the relation
shown by Fig. 2.

page_text: The latch F is pivoted to the collar D so as to have a preponderance of weight on
that side of the pivot H farthest from the lever, and thus when the handle portion of
said lever is depressed to bring the latter out of the horizontal position shown in
Fig. 2 said latch will automatically disengage, and the object that has been held up by
the lever may be lowered.
The collar D may be run up on the standard A, and the lever E turned on its pivot
to hang parallel with said standard, whereby the device will occupy but little space
when not in use.
The standard A is preferably hollow, and may be made of gas-pipe, the hand-grip C
being attached thereto in any suitable manner.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. A lifting-jack comprising a standard, a collar loose thereon, a lover pivoted to
the collar, and a latch also pivoted to said collar in position to be brought into
engagement with the lever, substantially as set forth.
2. A lifting-jack comprising a standard having a base and hand-grip, a collar loose
on the standard, a lever pivoted to the collar, and a latch also pivoted to said collar at
right angles to the lever, substantially as set forth.
Dated this 22nd day of November 1890.
J. P. BAYLY,
Applicant.