Year: 1888

page_text: WILLIAM BOOTH PEARSALL 13 Upper Merrion Street, Dublin Dentist ARTHUR
JOSEPH WATTS 32 St. Alban's Road South Circular Road Dublin Dentist do hereby
declare the nature of this invention to be as follows:-
An iron tripod stand A from centre of which is fixed an upright metal bar B on
the upper end of bar B are cut nine or more square notches so as to form a rack.
The seat D is secured to an iron tube E which telescopes over the upright motal
bar B and can be raised or lowered with one hand by means of a spring catch F
which fits the square notches (in upright bar B the handle of which projects to edge
of seat D.
W. BOOTH PEARSALL.
ARTHUR JOSEPH WATTS.

page_text: We WILLIAM BOOTH PEARSALL of 13 Upper-Merrion Street Dublin, Dentist,
and ARTHUR JOSEPH WATTS of 32 St. Alban's Road, South Circular Road, Dublin,
Dentist, 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 :-
Our Invention is designed to produce a seat, chair, or stool the height of which.
can be readily adjusted in a simple expeditious, and effectual manner and is especially
applicable to work room seats, counter chairs, piano stools and such like articles of
furniture.
Tho principle and construction, of our invention will be readily understood on
reference to the accompanying Drawing which represents in elevation the apparatus
complete A is an ordinary metal tripod from which rises the rod or standard B,
provided with a certain number of circumferential grooves as shown constituting a
kind of rack for the purpose presently described. Over this Standard slides a tube C,
which carries the seat D, and is provided with a collar and cheeks e, in which is
pivoted the paul f;-the tongue of this paul is made to gear in the circumferential
grooves by means of a flat spring 9, while its free end extends to the edge of the
seat forming a handle.
The action of the apparatus is briefly as follows.
When it is desired to adjust the seat, the handle of the paul is pressed so as to
free the sliding tube; the seat is then raised, or lowered to the required height when
on freeing the paul, its tongue gears in one of the circumferential grooves thus
preventing further movement of the sliding tube and thereby holding the seat securely
in the desired position.
Should it be found in practice more convenient to work the paul with the foot
instead of the hand as above described, it will be obvious that by simply reversing
the apparatus and transposing the positions of the tripod and seat, the object may
be readily accomplished without departing from the principle of our invention.
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what we
claim is.
1st. The use and application in workroom, or adjustable seats, chairs, or stools,
of the Standard B, provided with circumferential grooves in combination with the
sliding tube C, and paul f, arranged and operating substantially in the manner herein
described.
2nd. The use and application for the purpose herein specified of apparatus
constructed and operating substantially in the manner herein described and set forth.
Dated this 27th day of Anvil 1900.