Improvements relating to Revolving and Sliding Seats.
Year: 1889

page_text: Date of Application, 1st June, 1889
Complete Specification Loft 5th Feb 1800 Accented. 8th Mar. 1890
PROVISIONAL SPECIFICATION.
Improvements relating to Revolving and Sliding Seats.
I, HUGH PATTERSON ARTHUR, of Kertch House, Queen's Park, Southampton, in
the County of Hants, Engineer, do hereby declare the nature of this invention to
be as follows:-
My invention relates to chairs or stools in which the seat or upper portion is
capable of rotation and of a sliding movement independently of the lower portion or
pedestal.
My improved seat is more especially adapted for use on board ship and in other
cases where it is desirable to have the lower portion or pedestal firmly secured in
position on a deck or floor.
My improved seat is so constructed that the upper portion in its rotation in either
direction will have a sliding motion imparted to it which will facilitate the movement
of the occupant from one position to another as hereinafter described.
In carrying my said invention into practice I construct the pedestal or supporting
frame of the chair of any suitable size shape and configuration such pedestal being
desired to remain.
preferably firmly secured in the position in which it
Upon this pedestal I secure a horizontal plate or disc provided with a central pin,
stud or bolt. Above the said plate or disc is arranged a second plate or disc provided
with an elongated slot through which is passed the pin or bolt so that the upper plate
or disc can slide freely upon the lower one. A nut or head is provided on the said
pin or bolt to engage with the upper plate or disc or with a flange thereon to prevent
the same from rising but so as not to interfere with the free horizontal motion of the
upper plate or disc.
One of the said plates or discs is provided with a pin or stud which is arranged to
work in a groove or channel in the other plate or disc. This groove or channel is so
formed that the upper plate or disc can be rotated upon the lower one and in such
rotation, will have a sliding movement imparted to it for the purpose hereinafter
specified. I find it advantageous to make the said groove or channel in the form of
a parallelogram. The ends of the parallelogram then serve as stops for steadying the
seat or preventing accidental sliding thereof.
The seat or upper portion of the chair is attached to and overhangs the upper plate
or disc in any convenient manner so that it is capable of moving therewith. Assuming
the back of the chair to be towards a table, then in the turning of the seat to permit
the occupant to sit, facing the said table, the said seat will have its movement so
controlled by the aforesaid pins or bolts and grooves or slots that it will be caused to
slide first laterally and then forward or towards the table. And when rotated in the
reverse direction it will be moved first backward or away from the table and then
laterally. The occupant of the chair is thus enabled to turn towards or away from
the table and in so doing will be moved forward or backward towards or away
from the table and laterally away from an adjacent chair to prevent his knees from
striking the same.
:
The seat will, moreover, have the desired sliding motion, whether rotated in one or
in the other direction, that is to say, whether the occupant turns to the right or to the
left from either of the above mentioned positions, the action will be the same, the
seat being moved first backward or forward and then to one side to leave a maximum
space between it and the adjacent seat. The occupant is thus enabled to very readily
sit in to, or retire from the table or to move from right to left as circumstances or
convenience may require.
Dalhin 1nt doof Inn 1880

page_text: COMPLETE SPECIFICATION.
Improvements relating to Revolving and Sliding Seats.
1, HUGH PATTERSON ARTHUR of Kertch House, Queen's Park, Southampton in
the County of Hants, Engineer, 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 :-
My invention relates to chairs or stools in which the seat or upper portion is
capable of rotation and of a sliding movement independently of the lower portion or
pedestal.
My improved seat is more especially adapted for use on board ship, and in other
cases where it is desirable to have the lower portion or pedestal firmly secured in
position on a deck or floor.
My improved seat is so constructed that the upper portion, in its rotation in
either direction, will have a sliding motion imparted to it which will facilitato
the movement of the occupant from one position to another as hereinafter described.
In the accompanying drawing I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a side elevation of one form of my improved chair or seat.
Figure 2 is a plan of the upper plate or dise hereinafter referred to.
Figure 3 is a plan of the lower plate or disc hereinafter referred to.
Figure 4 is a vertical central section showing the said plates or discs connected as
hereinafter described.
Figures 5, 7, 9, 11, 13 and 14 are plans, and
Figures 6, 8, 10, 12 and 15 vertical central sections, illustrating various
modifications of my said invention.
Like letters indicate corresponding parts throughout the drawing.
A is the pedestal or supporting-frame of the chair or seat, B is the seat proper,
B¹ is the back or support thereof.
The pedestal or supporting-frame A is constructed of any suitable dimensions and
shape or configuration, and is preferably provided with a screw a or other suitable
device by means of which it can be firmly secured in any desired position on a deck
or other floor or platform.
To the upper portion of the said pedestal or supporting-frame A is firmly attached
a horizontal plate or disc b provided with a central pin, stud or bolt c. Above the
said plate or disc b is arranged a second plate or disc d provided with an elongated
slot d through which is passed the pin, stud or bolt c, so that the upper plate or disc
can slide freely in a horizontal plane upon the lower one. The head (or the nut)
of the said pin or bolt e engages with the upper plate or disc d or with a flange
thereon in such a manner as to prevent the same from rising but not to interfere
with the free horizontal motion of the said upper plate or disc.
The plate or disc d is provided, moreover, with a pin or stud e which is arranged
to work in a groove or channel in the plate or disc b. The said groove or channel f
is so formed that the upper plate or disc d can be rotated upon the lower plate or
dise b, and, in such rotation, will have a sliding movement imparted to it for the
purpose hereinafter specified.
The seat or upper portion B of the chair overhangs the said upper plate or disc d
and is attached thereto in any convenient manner so that it is capable of moving
therewith.
Assuming the back B¹ of the chair to be towards a table, then, in the turning of
the seat B to permit the occupant to sit facing the said table, the said seat will have
its movement so controlled by the aforesaid pins or bolts c, e and grooves or slots d', f
that it will be caused to slide first laterally and then forward or towards the table,
the pine following the direction of the groove f and the pin or bolt c moving as
required in the slot d¹. And, when rotated in the reverse direction, the said seat, B
will be moved first backward or away from the table and then laterally. The

page_text: occupant of the chair is thus enabled to turn towards or away from the table, and, in
so doing, will be moved forward or backward towards or away from the table and
laterally away from an adjacent chair to prevent his knees from striking the same
and to leave the maximum amount of room for the movement of his legs between his
own chair and that of the person next him.
The seat will, moreover, have the desired sliding motion, whether rotated in one or
in the other direction, that is to say, whether the occupant turns to the right or to the
left from either of the above mentioned positions, the action will be the same, the seat,
being moved first backward or forward and then to one side to leave a large amount
of space between it and the adjacent seat. The occupant is thus enabled to very
readily sit in to, or retire from the table, or to move from right to left as circum-
stances or convenience may require.
Figures 5 to 15 illustrate various modifications wherein the groove or channel f
in the plate or disc b is differently formed so as to vary the sliding motion of the
plate or disc d with the seat or upper portion B of the chair. If desired, the pin or
stud e may be provided with an antifriction roller g as shown in Figures 5 and 6.
A chair constructed in the manner above described can be placed nearer to the
table than the turning or revolving chairs heretofore used, that is to say, the pedestal
or supporting-frame A can be secured in such a position that, when the back of the
chair is towards the table, it will be in close proximity thereto, thus economizing
space in the saloon or room in which the chairs are situated.
My improvements, moreover, afford the advantage that, in a saloon wherein two
parallel rows of chairs are arranged between two tables, the pedestals of the chairs
can be so situated that a larger space than heretofore will be left between the rows of
chairs when the said chairs are turned with their backs towards the corresponding
table, whilst sufficient space will be left for the hand to be placed upon the back or
arms of the chair without liability to jamming of the hand between the said back or
arms and the table or adjacent chair, at any point in the revolution of either of the
said chairs.
My improved chair is, moreover, simple in construction and can be cheaply made,
and is not liable to be broken or to get out of order.
It is obvious that the above described device comprising the plates or discs con-
nected together by the pin, stud or bolt and provided with the pin or stud fixed in
one of the said plates or discs, and working in a groove or channel in the other plate
or disc, can, if desired, be used for articles other than chairs.
It is obvious that I can somewhat further modify the construction of my improved
revolving and sliding seat without departing from the nature of my said invention.
For instance I can make the aforesaid groove or channel in the form of a parallelo-
gram so that the ends of the parallelogram will serve as stops for steadying the seat
or preventing accidental sliding thereof. Moreover, the sliding motion to the right
or left and in towards the table can be made more or less to suit all requirements.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I wish it understood
that I claim :-
First. A chair or the like so constructed that its seat or upper portion is capable
of rotation and of sliding or lateral motion relatively to its lower portion or pedestal.
Second. A device comprising two plates or discs suitably connected and provided
with a pin or stud on one plate or disc working in a groove or channel in the other
plate or disc, for the purposes above specified.
Third. The improved chair or seat constructed substantially as described with
reference to the accompanying drawing and for the purposes above specified.
1800
H. P. ARTHUR.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, Agents for the Applicant.