Year: 1899

page_text: Date of Application, 19th Apr., 1899
Complete Specification Left, 19th Jan., 1900-Accepted, 24th Feb.,
1900
We, JOHN BROWN, Engineer, and HARRY NEWMAN BROWN, Engineer, both of
22, Lincoln Road, Peterborough, do hereby declare the nature of this invention
to be as follows:-
This invention relates to improvements in music stools and its object is to provide
an arrangement by which such stools may be raised or lowered, applicable to all
forms of stools.
According to one arrangement I propose to employ a rack and pinion device in
which two racks are preferably employed, one at each side of the stool pinions are
arranged to engage with these racks, both pinions being carried on the same spindle
or connected so that they turn together. The spindle carrying the pinions is provided
at one end or both ends with a knob or handle with which it can be turned. The
racks are carried in suitable bearings at the lower part of the stool which allow them
to slide up or down as required.
The seat is supported by a sliding frame which moves in guides formed by the
legs or lower part of the stool and the racks are fitted at their upper end to the top
of the frame.
To retain the sliding frame in any position which it may be adjusted the racks
may be formed with a number of holes and the fixed support provided with a spring
and pin at each side, the pin being adapted to project into one or other of the holes.
The spindle carrying the pinions is arranged so as to press back the spring and
disengage the racks when the seat is to be raised or lowered.
According to a modified arrangement in place of the racks we may employ long
screws provided with a worm wheel with which engages a worm carried on an
operating spindle. This spindle is provided with knobs or handles by which it cau
be turned, and raises or lowers the seat according to the direction of turning. The
screws are fixed to the sliding frame carrying the seat and the worm wheels are
screwed internally and are prevented from moving vertically so that on being turned
they will raise or lower the screws.
200
1
1 1000
We, JOHN BROWN, Engineer, and HARRY NEWMAN BROWN, Engineer, both of 22,
5 Lincoln Road, Peterborough, 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 improvements in music stools and its object is to provide

page_text: an arrangement by which such stools may be raised or lowered, applicable to all
forms of stools.
In order that this invention may be more clearly described reference is had to the
accompanying sheet of illustrative drawings on which
Fig. 1 is a vertical section of a music stool constructed according to this invention,
and
Fig. 2 is a horizontal section,
Figs. 3 and 4 are similar views of a slightly modified construction, and
Figs. 5 and 6 are similar views of another arrangement.
Referring first to the arrangements shown in Figs. 1 and two racks A A are
attached to the under side of the movable seat B. Upon the framing C supporting
the seat proper bearings D are provided supporting a spindle E carrying pinions F F
adapted to engage with the teeth of the racks A A.
devices at each side of the stool serve for rotating the spindle E and thereby operat-
Operating knobs or similar
ing the pinions to cause the upward or downward movement of the seat B. The
seat framing is adapted to fit within the frame provided by the legs or lower portion
of the stool.
To retain the seat in any position a number of holes a are provided in the racks A A
Spring pins c c are arranged at each side upon the frame C and the pins are adapted
to project into one or other of the holes. Small levers c¹ c¹ provided with press
knobs c2 c2 which can be pressed while the knobs G G are being turned press the
spring pins cc out of engagement with the holes a a in the racks A A and permit
movement of the seat B. When the desired position has been obtained it is only
necessary to allow the spring pins c c to re-engage with one or other of the holes a a
in the racks A A to secure the seat in the new position. Any other suitable dis-
engaging device may be used for withdrawing the pins c c while the knobs G G are
being operated that can be operated while the knobs are being turned or the rotation
of the spindle E may itself be used to effect this purpose by means of suitable
mechanism.
Referring to the arrangements shown in Figs. 3 and 4 instead of racks long
screws II are employed adapted to pass through the worm wheels J J which form
nuts and with which the worms K K carried by the spindle E engage. The worm
wheels J J are engaged between the cheeks J¹ J¹ whereby longitudinal movement is
prevented. On rotating the knobs G G the screws I I are caused to rotate and will
move longitudinally thereby raising or lowering the seat B.
In the arrangement shown in Figs. 5 and 6 the screws I I are rotated by means of
bevil wheels LL' by which rotation of the spindle E is transmitted to each of the
screws II thereby raising or lowering the seat. The screws I I pass through the
screwed bearing C¹ C¹ and the seat is therefore raised or lowered as required and will
retain any position without need for any securing devices.
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
(1) An improved music stool capable of being increased or decreased in height
comprising a movable seat portion, toothed racks thereon, spindles carried upon the
main framing having pinions adapted to engage with the racks, operating knobs
whereby said spindles can be rotated, spring pins adapted to engage with holes in the
racks so as to retain the seat in any desired position and means for disengaging said
spring pins while the seat is being adjusted, substantially as described with reference
to Figs. 1 and 2 of the drawings.
(2) An improved music stool capable of being increased or decreased in height
.comprising a movable seat portion, screws attached thereto, worm wheels fitted upon
said screws and prevented from movement longitudinally thereon, spindles upon the
fixed framing carrying worins adapted to engage with the worm wheels their rotation
causing the upward or downward movement of the seat and operating knobs upon

page_text: said spindles whereby they can be conveniently rotated substantially as described with
reference to Figs. 3 and 4 of the drawings.
(3) An improved music stool capable of being raised or lowered in height compris-
ing a movable seat portion, long screws upon said seat portion, screwed bearings upon
the main framing of the seat through which said screws pass, a spindle upon the seat
portion having bevil gearing by which its rotation will cause rotation of the screws
whereby raising or lowering of the seat is effected and operating knobs upon said
spindle substantially as described with reference to Figs. 5 and 6 of the drawings.
Dated this 19th day of January 1900.
GEO. H. RAYNER,
37, Chancery Lane, London, Agent for the Applicants.