Stools, Chairs, and Seats and other similar Articles.
Year: 1888

page_text: Date of Application, 30th June, 1888
Complete Specification Left, 27th Mar., 1889
Complete Specification Accepted, 4th May, 1889
Stools, Chairs, and Seats and other similar Articles.
I ARTHUR PAGET, Mechanical Engineer of Radmoor, Loughborough in the County
of Leicester, do hereby declare the nature of this invention to be as follows:-
:-
The object of this invention is to produce a stool, chair, or seat, or similar article
which shall have a seat or top so arranged that it can be raised or lowered at will and
can be locked or fastened at certain desired heights and will then remain there steady
free from unpleasant oscillation and fixed until it is again desired to move it up or
down.
The first part of my invention consists of the construction and use of a screw with a
peculiarly shaped "thread" (or threads) in combination with the revolving tops of
stools, chairs, seats or similar articles the said thread (or threads) having one side at
The nut
right angles to its axis and the other side at a more acute angle to the same.
"anti-friction
in which the said screw works being made of what is well known as
metal" or other similar suitable metal cast in a suitable mould with the said screw or
a similar or a slightly larger screw used as a core thus avoiding the costly process of
cutting a thread in the said nut.
The second part of my invention consists of the construction and use of a spring
lock, latch or bolt for holding the revolving tops of stools, chairs and seats or similar
articles in certain desired positions, such lock, latch, or bolt being attached to any
convenient part of the legs or framing in such a manner that it acts as a "spring-bolt"
pressed upwards by a spring so as to enter into suitable holes or recesses in the under
side of the revolving top or seat and prevent the said top or seat from turning except
when it is required to do so for raising and lowering the said top or seat when the
" un-bolted.'
spring-bolt" can easily and quickly be
1,10 2011
T1000

page_text: Stools, Chairs, and Seats and other similar Articles.
[ARTHUR PAGET Mechanical Engineer of Radmoor Loughborough in the County
of Leicester do hereby declare the nature of this invention and in what manner the
sane is to be perforinet, to be particularly described and ascertained in and by the
following statement:—
The object of this invention is to produce a stool, chair, or seat, or similar article
which shall have a seat or top so arranged that it can be raised or lowered at will and
can be locked or fastened at certain desired heights and will then remain there steady
free from unpleasant oscillation and fixed until it is again desired to move it up or
down.
።
The first part of my invention which I will describe consists of the construction and
use of a screw with a peculiarly shaped thread" (or threads) in combination with
the revolving tops of stools, chairs, seats or similar articlos, tho said thread (or threads)
having one side at right angles to its axis and the other side at a more acute angle to
the same. The nut in which the said screw works being made of what is well known
ns "anti-friction metal" or other similar suitable motal cast in a suitable mould with
the said screw or a similar or a slightly larger screw used as a core, thus avoiding the
costly process of cutting thread in the said nut.
Figs. 1. 2. 5 and 6 sheets 1 and 2 show a screw such as herein referred to. Fig. 1
shows the screw in elevation and the nut in section. Fig. 2 is a section through both
nut and screw on the line. y. The nut ns here shown has a cast iron or other suitable
casing A', A', in which I enst "anti-friction metal" B, B, around the screw A and
thus form a cheap and efficient nut.
Fig. 5 is an elevation of a stool with a screw such as above referral. Fig. 6 is a
part plan of same with the top G removed.
It will be seen that when in the course of time the screw and nut wear they will be
free from the unpleasant "shake" and oscilation of an ordinary shaped thread, as the
weight of the person sitting upon the stool pressos the specially conod or wedge shapel
screw into the nut and the top is thus always steady.
The second part of my invention which I will describo consists of the construction
and use of a spring lock latch or bolt for holding the revolving tops of stools, chairs
and seats or similar articles in certain desired positions, such lock, latch or bolt heing
attached to any convenient part of the legs or framing in such a manner that it acts as
a "spring-bolt" pressed upwards by a spring so as to enter into suitable holes or
recesses in the under side of the revolving top or soat and provent the said top or seat
from turning, except when it is required to do so for raising and lowering the said top
or seat when the "spring-bolt" can easily and quickly un-bolted."
Figs. 3. 4. 5 and 6. sheets 1 and 2 show this arrangement.
section through a lock latch or holt such as herein referred to.
Fig. 3 is a vertical
Fig. 4 is a plan of

page_text: same. Figs. 5 and 6 show its application to a stool with a revolving top. It will he
seen that this lock latch or bolt consists of an outer or fixed casing C. In this casing C,
a bolt D is free to slide. Inside both the casing C and the bolt D is a spiral spring E
which is arranged to press the bolt D in the direction of the arrow F.
Fig. 5 is an elevation of a stool with the said lock latch or bolt attached, and Fig. 6
is a part plan of same with the top of the stool removed. The outer casing C of the
lock latch or holt is attached to the bottom framing or legs of the stool as shown or by
any well known convenient means.
To the under side of the stool-top G I attach a plate H. Figs. 5 and 6 of metal or
other suitable material in which are holes or recesses H¹. These holes or recesses are
arranged in such a position that as the top G is revolved each hole H¹ can pass in
succession over the top of the bolt D.
any
It will be seen that when one of the holes or recess H¹ is brought over the said bolt
the spring E will cause the said bolt D to rise into the said hole or recess and thus
firmly locks the top G and prevent its turning until the said bolt be released. To
convenient part of the legs or framing I attach one end of a suitable cord or chain J
the other end I pass up through the hole L in the bottom of the lock latch or bolt and
attach it to a suitable ring K (Fig. 3) inside the top of the bolt D.
When it is desired to raise or lower the top G the cord or chain J is pulled, this
pulls the bolt D out of the holes or recesses H and the top G is then free to turn
until the bolt D is released when it again enters one of the holes or recesses H' and
the top G is locked in its new position, and is held firm so that the top will not move
revolve or swing about each time the person sitting upon the stool moves or rises from
the seat as is the case in ordinary revolving-top stools.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed I desire it to be understood that I do
not confine myself to the exact details herein set forth, as such may be varied or
modified without departing from the principle thereof but what I claim as my
Improvements in apparatus for raising and lowering the tops of stools chairs and seats
and other similar articles are:-
First. The construction and use of a screw with a peculiarly shaped "thread " (or
threads) in combination with the revolving tops of stools, chairs seats or similar
articles, the said thread (or throads) having one side at right angles to its axis and the
other side at a more acute augle to the same. The nut in which the said screw works
being made of what is well known as "anti-friction metal" or other similar suitable
metal cast in a suitable mould with the said screw or a similar or a slightly larger
screw used as a core, thus avoiding the costly process of cutting a thread in the said
nut, substantially as herein before described with reference to Figs. 1. 2. 5 and 6
sheets 1 and 2.
Second. The construction and use of a spring lock, latch or bolt for holding the
revolving tops of stools, chairs and seats or similar articles in certain desired positions,
such lock, latch or bolt being attached to any convenient part of the legs or framing in
such a manner that it acts as a "spring-bolt" pressed upwards by a spring so as to
enter into suitable holes or recesses in the under side of the revolving top or seat and
prevent the said top or seat from turning, except when it is required to do so for
raising and lowering the said top or seat when the "spring-bolt" can easily and
quickly be "un-bolted" substantially as herein before described with reference to
Figs. 3. 4. 5 and 6 sheets 1 and 2.