Improvements in Lifting Jacks.
Year: 1894

page_text: Date of Application, 28th Dec., 1894
Complete Specification Left, 28th Sept., 1895-Accented, 28th Dec., 1395
Improvements in Lifting Jacks.
I, SAMUEL MCCLELLAND of Bear Lane, Farnham in the County of Surrey,
Coachbuilder do hereby declare the nature of this invention to be as follows:-
My invention relates to improvements in lifting jacks & similar apparatus to
enable them to be quickly raised or lowered to any desired height without screwing
or uuscrewing.
To carry my mvention into practico I provide or form in the body of the jack
a vertical groove or grooves on one side of which I form teeth or notches.
Into this tube or body I fit another tube carrying on its head the screw arrange-
ment for lifting & through this tube I fix horizontal bars the ends of which
project beyond the tube on each side & form projections to engage in the teeth
before mentioned.
I may also arrange in the body of the jack to provide holes at suitable intervals
through which I may pass a rod or bar upon which the bottom of the before
mentioned sliding tube may rest for additional strength.
To use my improved lifting jack it is only necessary to turn the inner tube a
quarter of a revolution & then raise or lower it as desired & by again turning it a
quarter of a revolution it is securely locked in position.
Dated this 28th day of December 1894.
I SAMUEL MCLELLAND Coachbuilder Bear Lane Farnham Surrey 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 :-
My invention relates to improvements in lifting jacks and similar apparatus to
enable them to be quickly raised or lowered to any desired height without screwing
of unscrewing.
To carry my mvention into practice I provide or form in the tube C which is
fixed to the body of the jack A B a vertical groove or grooves on one side of which
I form teeth or notches as shown in section marked C¹ of drawings herewith
supplied
Tuto this tube C or body I fix another tube E carrying on its head the screw
arrangement F for lifting, and through this tube EI fix horizontal bars the ends
of which project beyond the tube (mai ked D in drawing) on each side and form
projections to engage in the teeth C before mentioned and described.
may
also autange in the body of the Jack A, B. to provide holes at suitable
intervals through which I cau pass a rod or bar upon which the bottom of the
before mentioned sliding tube E may rest for additional support and strength
To use my improved lifting jack it is only necessary to turn the inner tube E a
quarter of a revolution and then raise or lower it as desired and by again turning

page_text: it a quarter of a revolution it is securely locked in position by the ends of the
rod Dengaging in the teeth C¹ & resting therem.
Having now described and ascertained the nature of the invention what I
claim 18
1. The improved jack substantially as shown and described.
2. The method of raising and lowering and locking the jack substantially as
shown and described.
3. The use of tubes sliding one within the other substantially as shown and
described.
Dated this 28th day of September 1895.
SAMUEL MCCLELLAND.