Improvements in Eccentric Swivelling Chairs or Seats for Ships' Saloons.
Year: 1898

page_text: Date of Application, 28th Nov., 1898
Complete Specification Left, 26th Aug., 1899-Accepted, 30th Sept., 1899
PROVISIONAL SPECIFICATION.
Improvements in Eccentric Swivelling Chairs or Seats for Ships'
Saloons.
We, ALEXANDER ROBERTSON, of Dansen Terrace, Carron, in the County of
Stirling, Engineer, and Jonx Rowan, of the Firm of J. G. Rowan & Coy., Ships'
Furnishers, Cathcart Square, Greenock, in the County of Renfrew, do hereby
declare the nature of this invention to be as follows:-
This invention relates to eccentric swivelling chairs or seats such as are
permanently fitted around the tables in ships' saloons and are partially rotated
upon a pillar or pedestal to bring the user more or less close to the table. The
present improvements have for their object to provide for readily varying the
extent of lateral movement relatively to the table that may be imparted to the
seat by turning or swivelling it upon its centre to suit the convenience of the
user.
The seat of the chair is secured to the upper of two plates of which the lower
is attached to or forms part of the seat pillar or pedestal and forms a base upon
which the upper plate swivels. The upper plate is formed with a guide slot
wherein is fitted a guide block centred on the lower plate, and on the upper
plate is a stud or pin which fits into a groove in the lower plate. This groove is
curved and is formed with a number of branch grooves of varying degrees of
eccentricity the opening to each branch being fitted with a movable switch
adapted to close or cover the opening to the branch. When the upper plate
carrying the seat of the chair is turned about half a revolution upon the pedestal
the pin travels along the open groove with the result that the upper plate and
seat are moved laterally towards the table and by moving any of the switches to
open one groove and close off the others lateral movement of the seat corre-
sponding to the eccentricity of that groove is obtained.
The switches may be conveniently operated by means of screw-threaded studs
projecting down from them and furnished with wing nuts or other means for
securing the switches in the position in which they serve to open any one of
the grooves.
ד
.
T
1000
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow,
Agent for the Applicants.

page_text: Improvements in Eccentric Swivelling Chairs or Seats for Ships'
Saloons.
We, ALEXANDER ROBERTSON, of Dansen Terrace, Carron, in the County of
Stirling, Engineer, and JOHN ROWAN, of the Firm of J. G. Rowan & Coy., Ships'
Furnishers, Cathcart Square, Greenock, in the County of Renfrew, 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 eccentric swivelling chairs or seats such as are
permanently fitted around the tables in ships' saloons and are partially rotated
upon a pillar or pedestal to bring the user more or less close to the table. The
present improvements have for their object to provide for readily varying the
extent of lateral movement relatively to the table that may be imparted to the
seat by turning or swivelling it upon its centre to suit the convenience of the
user.
The invention is illustrated by the accompanying drawings, under two modifica-
tions, Fig. 1 being a plan of the lower plate either formed on or secured to the
seat pillar or pedestal, and which shows said lower plate provided with a curved
groove having a number of branch grooves of varying degrees of eccentricity,
each provided at its junction with the main eccentric groove with a pivoted
switch normally forming a portion of the main eccentric groove but adapted
when turned to establish communication with its branch so as to give the desired
lateral movement relatively to the saloon table. Fig. 2 is a vertical section of
Fig. 1, through the plate and one of the switches. Fig. 3 is a view similar to
Fig. 1 of a modification in which a single switch is used.
The seat of the chair is secured to the upper of two plates of which the
lower A only is shown, excepting at Fig. 2, and is attached to or forms part of
the seat pillar or pedestal, and forms a base upon which the upper plate swivels.
The upper plate A¹ is formed with a guide slot B₁ wherein is fitted a guide
block B centred at B on the lower plate A, and on the upper plate is a stud or
pin B3 which fits into the eccentric groove C in the lower plate A. This
groove C is curved and is formed with a number of branch grooves C1, C2, or C³,
of varying degrees of eccentricity, the opening to each branch being fitted with a
movable switch D adapted to close off any of the branches while opening the
other branch.
When the upper plate carrying the seat of the chair is turned about half a
revolution upon the pedestal, the pin B3 travels along the open or main eccentric
groove C with the result that the upper plate A¹ and seat are moved laterally
towards the table and by moving any of the switches to open one branch groove
and close off the other or others, lateral movement of the seat corresponding to
the eccentricity of that groove is obtained.
.
The switches may be conveniently operated by means of screw-threaded
studs G projecting down from them through slots F in the plate A and furnished
with wing nuts H, as shown at Fig. 2, or by means of a rod I connected to the
switch at one end and at the other end having its screw-threaded stud projecting
through a slot F at the back of the chair so that the position of the switch may
be adjusted therefrom and secured by a wing nut H, or other means may be
adopted for operating and securing the switches in the position in which they
serve to open or close any one of the grooves.
The switch or switches instead of being grooved to correspond with the

page_text: eccentric grooves in the plate may be solid and, of a form similar to railway
switches or of any other form that will serve to direct the pin or stud through a
more or less eccentric path of movement.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
In eccentric swivelling chairs for ships' saloons, the combination of an eccen-
trically grooved plate and a switch or switches pivoted on said plate, said switch
being adapted to direct a pin upon the adjoining plate along a path having a
greater or less degree of eccentricity in order to adjust the seat in relation to
the table, substantially as described.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow,
Agent for the Applicants.
WALLACE FAIRWEATHER,
Of the Firm of Cruikshank & Fairweather,
Chartered Patent Agents,
62, Saint Vincent Street, Glasgow,
Agent for the Applicants.