Improved Action or Attachment for Chairs with Revolving Seats, or Tables with Revolving Tops.
Year: 1891

page_text: Date of Application, 3rd Mar., 1891
Complete Specification Left, 2nd Dec., 1891-Accepted. 16th Jan., 1892
PROVISIONAL SPECIFICATION.
Improved Action or Attachment for Chairs with Revolving Seats,
or Tables with Revolving Tops.
PETER PENDOCK HOWE, of 57 Bevenden Street Hoxton, in the County
of Middlesex, Machinist, do hereby declare the nature of this invention for an
IMPROVED ACTION, OR ATTACHMENT FOR CHAIRS WITH REVOLVING SEATS,
OR TABLES WITH REVOLVING TOPS to be as follows:-
Two main plates of iron any other metal, or any other material suitable for the
purpose, faceing each other, and secured by a centre screw or pin, this centre
screw or pin fits tightly into one of said main plates, and the other said main plate
revolves freely upon it.
Between said inain plates a guide, or distance plate is placed, revolving freely on
said centre screw or pin, this guide or distance plate has three, or any other
number of perforations, near the outer rims of said main plates, these perforations
are for the purpose of receiving steel (or any other material suitable for the
purpose) rollers, said steel rollers forming contact between said main plates, thus
allowing one of said main plates to revolve freely, and the other to be in a fixed
position.
If desirable, in place of said steel rollers, steel (or any other suitable material)
balls are used. In this case near the outer rims of said main plates, are circular
U or V shaped grooves, coresponding to, and faccing each other, for the purpose of
receiving said balls, and forming contact between said main plates.
Said balls have guide or distance plates, for keeping them in position, and equal
distance apart, in a similar manner to said rollers above described.
One of said main plates, (for convenience called the top main plate) is firmly
secured to the revolving seat of the chair or to the revolving top of the table; the
other main plate (for convenience called the bottom main plate) is firmly secured
to the stand, or support of the chair, or table; thus allowing the chair seat, or table
top to revolve freely, and the stand or support to be in a fixed position.
When the chair seat or table top is not required to revolve, or otherwise to be
kept in a fixed position, the following device is used.
The said (top) main plate has a projection or lug on its outer rim, projecting to,
and just clearing the, outer rim of the other (bottom) main plate; to this projection
or lug, a thin band of steel (or other material suitable for the purpose) is secured
at one end and passed around the outer circumference of, and just clearing the said
bottom main plate, the other end of said steel band, is secured to a screw, which is
screwed into said projection or lug, thus drawing said steel band tightly around
the outer rin of said bottom main plate, forming a clasp holding the two said main
plates in fixed position in relation to each other.
By releasing said screw the chair seat or table top will be free to revolve, and
by tightening said screw the chair seat or table top will be in fixed position, the
said screw is made any convenient length, and fixed at one end near the edge of the
chair seat or table top, or in any other position required, with a suitable knob on
its end for working or turning it.
It will readily be understood that this invention forms an easy, & efficient action
or attachment for the purpose herein described.
L 1301

page_text: COMPLETE SPECIFICATION.
Improved Action or Attachment for Chairs with Revolving Seats,
or Tables with Revolving Tops.
1, PETER PENDOCK HOWE, of 57 Bevenden Street, Hoxton, in the County
of Middlesex, Machinist 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 consists of the action, or attachment, as hereinafter described and
applying the same to chairs and tables, or any other similar purpose; and has for
its object the construction of chairs with revolving seats or tables with revolving
tops, in a more efficient manner than has heretofore been done.
The sheet of drawings accompanying this Specification illustrates the various
features of this invention.
The action or attachment is as follows:
(1) Two main plates (Figs. A. B. 1. 2. 3. 6. & 7.) of iron, any other metal, or
any other material suitable for the purpose, faceing and secured to each other by
a centre screw or pin.
This centre screw or più fits tightly into one of said main plates, and the other
said main plate revolves freely upon it.
(2) Between said main plates a guide or distance plate (C. Figs. 1. 4. & 6.)
is placed revolving freely upon said centre screw or pin;
This guide or distance plate has three or any number of perforations near the
outer rims of said main plates; these perforations are for the purpose of receiving
steel (or any other material suitable for the purpose) rollers, (D. Figs. 1. 4. & 6.);
said rollers forming contact between said main plates, thus allowing one of said
main plates to revolve freely, and the other said main plate to be in a fixed
position.
(3) If desirable in place of said steel rollers, steel balls (e Figs. 5. & 7.) are
used in this case near the outer rims of said main plates are circular V shaped
grooves, corresponding to, and faceing each other, for the purpose of receiving said
steel balls, and forming contact between said main plates.
Said steel balls have guide or distance plates, (C1. Figs. 5. & 7.) for keeping
them in position, and equal distance apart, in a similar manner to said steel
rollers before described.
(4) One of said main plates, (for convenience called the top main plate) is firmly
secured to the revolving seat of the chair, or to the revolving top of the table; the
other main plate, (for convenience called the bottom main plate) is firmly secured
to the stand or support of the chair, or to the stand or support of the table; thus
allowing the chair seat or table top to revolve freely, and the stand or support to
be in a fixed position.
(5) When the chair seats or table tops are not required to revolve, or otherwise
to be kept in a fixed position, the following device is used.
The said (top) main plate has a projection or lug on its outer rim, projecting to
and just clearing the outer rim of the other (or bottom) main plate; to this pro-
jection, or lug, a thin band of steel, (or any other material suitable for the purpose)
is secured at one end, and passed round the outer circumference of, and just clearing
said (bottom) main plate; the other end of said thin steel band is secured to a
screw, which is screwed into said projection or lug, thus drawing said thin steel
band tightly round the outer rim of said (bottom) main plate, forming a clasp,
holding the two said main plates in fixed position in relation to each other.
By releasing said screw, the chair seat or table top will be free to revolve, and
by tightening said screw, the chair seat or table top will be in fixed position.
Said screw is made any convenient length, and fixed at one end uear to the edge
of the chair seat, or table top, or in any other position required, with a suitable
knob on its end for turning or working it.

page_text: The above arrangement (section 5) is not shown in the drawing accompanying
this Specification, and does not necessarily form part of this invention.
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:
(1) The construction or making of an improved action or attachment, and
applying the same to chairs with revolving seats, and tables with revolving tops, or
any other similar purpose, as herein described.
(2) The said action is formed or made with two plates, held together with a
centre screw or pin; between said plates are placed rollers or balls, with guide or
distance plates, with the object of reducing friction, and giving freedom and ease of
action or working.
(3) The distinguishing features and novelty of this my invention is the applica-
tion of rollers or balls, and guide plates placed between two main plates substan-
tially as and for the purpose as hereinbefore described.
Dated this 28th day of November 1891.
PETER PENDOCK HOWE.