Improvements in Music and other Stools or Stands.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in Music and other Stools or Stands.
I, EMMANUEL BALL, of 112, Lichfield Street, Walsall, in the County of Stafford,
Professor of Music, do hereby declare the nature of my said invention to be as
follows:-
.
My invention has for its object improvements in music and other stools or
stands which have adjustable seats or tops of either round, rectangular, oval or
other shape. The tops or under mechanism, the nature of which will be presently
made known, is so designed and constructed that while the top is altered in its
height it does not turn round as is the case with the well known round adjustable
piano stool, which soon becomes loose and shaky and is a very unstable seat which
causes the user much uneasiness and inconvenience which is detrimental to rapid
and steady execution when the whole range of the key board and pedals are used.
According to my present invention the top or seat part may be made in any
design and with any kind of covering. Immediately underneath the top or seat
is secured a rod or tube terminating with a considerable flange which is secured
to the seat and this flange may carry or work upon radial rollers or a ball bearing
so as to increase its steadiness. The underside of the bearing is formed upon a
metallic or other casing, the edge of which may project sufficiently to form an
ornamental finish to the under edge of the top, and an outer bearing may be
formed underneath near the edge. Either one or both these bearings may be
used. The centre of the under casing finishes with a hollow centre of considerable
length and which carries the screw thread for regulating the elevation. The
pillar, which may be mounted on any suitable three or more legged base, has
fitted into it a sleeve which projects downwards and also upwards from a flange
fastened to the top of the pillar, the upper part carrying a screw thread screwing
into the centre of the casing aforesaid. The rod or tube aforesaid fast to the
underside of the table enters and passes down the sleeve to near the bottom, but
does not turn therein, as it is prevented from doing so by a stop or set pin which
takes into a groove or grooves in the rod or tube. The rising and lowering action
is caused by revolving the casing underneath the top or seat while the top is
securely held in side position as explained. Instead of the under casing and
screw, the pillar may have its hole run quite through with the lining sleeve
tapped at the lower part and a small hand wheel and screw underneath the pillar
so as to be operated by hand or foot between the feet so as to raise the rod or tube
secured to the underside of the top. In this case the rod would carry a groove or
grooves or be made of such a section as not to turn in the sleeve. By another
modification I may use a coiled spring in compression at the bottom of the sleeve
operating to lift the rod or tube attached to the seat, in which case the travel or
height of the top is fixed by a spring or other bolt or pin taking into teeth or
recesses in the rod or tube thus locking it at any desired height. But by having
circular grooves the top may turn round.
In some cases I may form a slot in the screwed sleeve in which a stud or pin
works attached to the rod or tube which is secured to the underside of the seat and

page_text: on the outside of this screwed sleeve I arrange a collar in which the ends of the
pin or pins rest so that when the collar is turned it forces the pin up the slot, thus
regulating the height of the seat.
Dated the 10th day of I.... 1907
GEORGE BARKER,
Agent for Applicant, 77, Colmore Row, Birmingham.
Improvements in Music and other Stools or Stands.
I, EMMANUEL BALL, of 112, Lichfield Street, Walsall, in the County of Stafford,
Professor of Music, do hereby declare the nature of my said 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 has for its object improvements in music and other stools or
stands which have adjustable seats or tops of either round, rectangular, oval or
other shape. The tops or under mechanism, the nature of which will be presently
made known, is so designed and constructed that while the top is altered in its
height it does not turn round as is the case with the well known adjustable
piano stool, which soon becomes loose and shaky and is a very unstable seat which
causes the user much uneasiness and inconvenience which is detrimental to rapid
and steady execution when the whole range of the key board and pedals are used.
According to my present invention the top or seat part may be made in any
design and with any kind of covering. Immediately underneath the top or seat
is secured a rod or tube terminating with a considerable flange which is secured
to the seat and this flange may carry or work upon radial rollers or a ball bearing
so as to increase its steadiness. The underside of the bearing is formed upon a
metallic or other casing, the edge of which may project sufficiently to form an
ornamental finish to the under edge of the top, and an outer bearing may be
formed underneath near the edge. Either one or both of these bearings may be
used. The centre of the under casing finishes with a hollow centre of considerable
length and which carries the screw thread for regulating the elevation. The
pillar, which may be mounted on any suitable three or more legged base, has
fitted into it a sleeve which projects downwards and also upwards from a flange
fastened to the top of the pillar, the upper part carrying a screw thread screwing
into the centre of the casing aforesaid. The rod or tube aforesaid fast to the
underside of the table enters and passes down the sleeve to near the bottom, but
does not turn therein, as it is prevented from doing so by a stop or set pin which
takes into a groove or grooves in the rod or tube. The rising and lowering action
is caused by revolving the casing underneath the top or seat while the top is
securely held in side position as explained. Instead of the under casing and
screw, the pillar may have its hole run quite through with the lining sleeve
tapped at the lower part and a small hand wheel and screw underneath the pillar
so as to be operated by hand or foot between the feet so as to raise the rod or tube
secured to the underside of the top. In this case the rod would carry a groove or
grooves or be made of such a section as not to turn in the sleeve. By another
modification I may use a coiled spring in compression at the bottom of the sleeve
operating to lift the rod or tube attached to the seat, in which case the travel or
height of the top is fixed by a spring or other bolt or pin taking into teeth or
recesses in the rod or tube thus locking it at any desired height. But by having
circular grooves the top may turn round.

page_text: In some cases I may form a slot in the screwed sleeve in which a stud or pin
works attached to the rod or tube which is secured to the underside of the seat and
on the outside of this screwed sleeve I arrange a collar in which the ends of the
pin or pins rest so that when the collar is turned it forces the pin up the slot, thus
regulating the height of the seat.
In order that my invention may be more clearly understood and easily carried
into practical effect I have appended hereunto a double sized sheet of drawings
upon which I have illustrated various examples of my improvements.
Figure 1 is a part sectional elevation of one form of my stool.
Fig. 1 is a similar view to Fig. 1, slightly modified.
Figure 2 is a perspective view of another form of my stool.
Figure 3 is a similar view to Figure 2 shewing a slight modification.
Figure 4 is a longitudinal section of the spindle of my stool.
Figure 5 is a sectional view of the spring pawl or pin.
Figure 9 is a sectional view shewing a portion of a modified form of the spindle
arrangement.
Figure 10 is a part sectional view of a further modification.
In carrying my invention into practice the top or seat A of my stool may be
formed in any design and with any kind of covering. Immediately underneath
this top or seat I secure the rod or tube a¹ terminating with the flange a² which
is secured to the seat and this flange may carry or work upon the radial rollers a³
or balls so as to increase its steadiness. The underside of this bearing is formed
upon the metallic or other casing at the edge of which may project sufficiently
to form an ornamental finish to the under edge of the top and the outer bearing
may be formed underneath near the edge by the balls a5 or rollers. Either one
or both of these bearings may be used. The centre of the under casing is formed
with the hollow portion or socket as and which carries the screw thread for regu-
lating the elevation of the seat. The pillar a which may be mounted on any
suitable three or more legged base a8 has fitted into it the sleeve or socket a³ which
projects downwards and upwards from a flange fastened to the top of the pillar a²
the upper part being screw threaded and screwing into the socket a. The rod
or tube a enters and passes down this sleeve but does not turn therein as it is
prevented by the stop or set pin a¹0 which takes into a groove or grooves formed
in the said rod or tube a¹. The rising and falling action is caused by revolving
the casing a. Instead of the under casing and screw the pillar may have its
hole run quite through with the lining sleeve tapped at the lower part and the
small hand wheel all and screw underneath the pillar so as to be operated by
hand between the feet thereby raising the rod or tube secured to the underside of
the seat as clearly shewn at Figure 1. In this case the rod would be formed
with a groove or grooves or be made of such a section as not to turn in the sleeves.
At Figures 2 to 5 I have shewn a modified form of my stool. In this case I
form the base or legs B with the top plate 61 from which depends the tubular
socket 2. The seat 63 is provided with the spindle flat on one side so as to be
properly guided with the correspondingly shaped socket piece 65 at the upper end
of the socket 62 as clearly shewn at Figure 4. The spring pawl or pin 66 is carried
by the tubular guide tube 67 which screws through the socket 62 and through the
socket piece 65 and against the flat side of the spindle thereby holding the spindle
rigidly in position to prevent the seat from wabbling. The pawl or pin is movable
in the guide tube and has a reduced end to enter any of a number of openings or
notches b formed in the spindle. It will be obvious that in this way the spindle
can be firmly held in any adjusted position. In the bottom of the socket b² I
place the coiled spring 6 which presses against the bottom of the spindle and serves
to raise the spindle and seat when not held by the pawl or pin. Instead of placing
the coiled spring 69 in the bottom of the socket 62 I may place it around the upper
end of the spindle 64 thus dispensing with the lower portion of the socket as clearly
shewn at Figure 3. From the foregoing description it will be seen that the means
for adjusting the seat are easily and readily manipulated and serve to hold the

page_text: chair firmly in position. In the side of the socket 62 is formed an upright slot
upon the sides of which is a scale, while upon the spindle is a pin which indicates
the height of the seat. In this way a person can set the seat to any desired
elevation.
At Figure 9 I have shewn another method of raising the spindle. In this case
I form the socket 2 with an external screw thread at its lower end and on this
end of the socket I mount the wing nut f' or its equivalent. In one side of the
socket I form a longitudinal slot through which the pin fe attached to the spindle
projects. On the outside of the socket this pin carries the roller f³ which rests
upon the upper face of the nut f. In this way it will be seen that by turning
the nut fit rises or falls upon the socket and through the medium of the roller f³
and pin the spindle is raised or lowered. Or the socket 62 may be screw
threaded internally and open at its lower end to receive a screw bolt upon the
upper end of which the lower end of the spindle rests. A frame may be attached
to the lower end of this screw bolt and surround the lower end of the socket which
will serve as a means for turning the screw bolt thereby raising or lowering the
spindle and consequently the seat of the stool.
At Figure 10 I have shewn a further modification. In this case I fix the pin
or pins or their equivalents in the spindle h² which carries the seat and these
pins project through the slot h³ formed in the stem h so as to prevent the seat
of the stool from turning. The stem is screw threaded externally and is fixed
at its lower end to the base or feet of the stool and around this stem I fit the wheel
or socket piece h which screws up and down this stem and at the lower end of
this wheel or socket piece I fit the internally screwed bush 6 upon which the
pins h¹ rest.
It will thus be seen that when the wheel or socket piece h³ is turned
it raises or lowers the seat.
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:-
CLAIMS.
First: In a music stool or stand a vertically movable seat, means for raising
and lowering the same and for securing it in its adjusted position substantially
as hereinbefore described and as shewn upon the accompanying sheet of drawings.
Second: In a music stool or stand a base having a tubular socket and a seat
having a spindle movable therein a guide socket carried by the said socket to
guide the spindle and prevent rotation of the same and means for raising and
lowering the spindle and for securing it in its adjusted position substantially as
herein set forth and as shewn upon the drawings.
Third: In a music stool or stand a base having a tubular socket a seat having
a flat sided spindle sliding therein and openings in the said socket and engaging
said spindle and a spring pawl within the said guide tube adapted to engage
openings in the spindle substantially as herein set forth and as shewn.
Dated this 10th day ApAH 1898.
357
in
HANT
STYTA
Арти 1000.
EMMANUEL BALL,
By George Barker,
Agent for Applicant, 77, Colmore Row, Birmingham.