New or Improved Adjustable Seat or Stool.
Year: 1893

page_text: Date of Application, 11th Nov., 1893
Complete Specification Left, 11th Aug., 1894-Accepted, 6th Oct., 1894
PROVISIONAL SPECIFICATION.
New or Improved Adjustable Seat or Stool.
I JAMES CLEGG 21 Briant Street New Cross, S.E. in the County of Surrey
Carpenter do hereby declare the nature of this invention to be as follows:-
:―
This invention relates to a new or improved seat or stool for the use of
performers upon the piano, harmonium and like keyboard instruments, and for
other purposes where it is necessary to adjust the height of the seat to that of the
performer.
In carrying this invention into practical effect I attach to the under side of each
end of the framework of the seat which is preferably of rectangular form, one
or more downwardly extending arms, provided with a guiding bar on each edge.
To the base or foot of the stool, which is detached from the part described, I
secure two or more uprights or standards grooved on their inner edges so as to
receive between them one of the said arms extending downwardly from the seat.
A shaft or spindle extends the whole length of the seat, and just under the
covering of the seat, proper, and passes through each end, projecting sufficiently
over the framework to admit of a knob or hand-wheel being attached by which it
may be turned.
Fixed on this shaft or spindle and between the aforementioned downwardly
extending arms are two worms, right & left handed, each gearing with a worm-
wheel, right & left handed respectively, which is attached to the inner side of
the aforementioned arms. These arms are grooved on their inner sides to receive
a rack with teeth bevelled to allow worm-wheel to pass up or down, as may be
required, when the seat is raised or lowered.
It will thus be seen that the worm-wheels engages with both worms & racks.
These racks are fixed at one end to the base or under half of stool.
As a modification of the above, instead of the worm & worm-wheel, two
toothed wheels or pinions may be used, that is, two at each end, one such wheel
or pinion being fixed on the shaft or spindle instead of the worm and one geared
to this last mentioned, fixed on the end of a screwed or threaded spindle passing
down the inner side of the aforementioned downwardly extending arms, and
turning into an inwardly screwed or threaded socket fixed to the aforesaid uprights
or standards.
Dated this 11th day of November 1893.
JAMES CLEGG.
COMPLETE SPECIFICATION.
New or Improved Adjustable Seat or Stool.
I, JAMES CLEGG of 21 Briant Street New Cross, in the County of Surrey,
Carpenter, 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 seat or stool for the use of
performers upon the piano, harmonium, and like keyboard instruments and for
other purposes where it is necessary to adjust the height of the seat to that of
the performer.

page_text: In carrying this invention into practical effect I attach to the under side of
each end of the framework of the seat, which is preferably of rectangular form
one or more downwardly extending arms provided with a guiding bar on each
edge. To the base or foot of the stool, which is detached from the part described
I secure two or more uprights or standards grooved on their inner edges so as
to receive between them one of the said arms extending downwardly from the
Beat. A shaft or spindle extends the whole length of the seat, and just under
the covering of the seat proper, and passes through each end, projecting
sufficiently over the framework to admit of a knob or hand-wheel being attached,
by which it may be turned.
Fixed on this shaft or spindle and between the aforementioned downwardly
extending arms are two worms, right and left handed, each gearing with a worm-
wheel, right and left handed respectively, which is attached to the inner side of
the aforementioned arms. These arms are grooved on their inner sides to receive
a rack with teeth bevelled to allow worm-wheel to pass up or down as may be
required when the seat is raised or lowered. It will thus be seen that the worm
wheels engages with both worm and rack. These racks are fixed at one end to
the base or under half of the stool.
And in order that my invention may be more readily understood and carried
into practice I will now proceed to describe the same with reference to the
accompanying sheet of drawings of which
Figure 1 is a front elevation Figure 2 an end elevation & Figure 3 a section.
The framework of the seat (a) has at each end a downwardly extending arm b.
To the base d. of the stool are secured two vertically divided uprights c between
the inner grooved edges of which the arms b. slide. Revolving in bearings in the
arms b. is a horizontal shaft ƒ provided with a hand-wheel g at each end and having
secured to it two worms H gearing with the worm-wheels.
These worm-wheels pass up or down the racks K. It will thus be seen that the
seat a may be raised or lowered by turning the shaft f by the aid of the hand-
wheel G.
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,
An adjustable seat which may be readily raised or lowered by a person while
sitting upon it and operated substantially as described and ascertained in the
accompanying drawings.
Dated this 11th day of August 1894.
JAMES CLEGG,
21, Briant Street, New Cross, S.E.