IMPROVEMENTS IN SPRING SEATS OR CHAIRS
Year: 1884

page_text: I JOHN HARRINGTON of." The Enamel and Cradle Spring Works" Coventry, in
the County of Warwick, Manufacturer do hereby declare the nature of the said
Invention for IMPROVEMENTS IN SPRING SEATS OR CHAIRS to be as follows:-
The invention has for its object the production of a seat or chair which shall
insulate the occupant from shocks and vibrations which may be communicated to
its supports and at the same time afford an easy seat which is capable within given
limits of moving to any angle forwards, backwards and sideways.
For this purpose I provide a rigid frame or support which may be somewhat in
the form of an ordinary chair frame provided with a seat, back and legs, or it may
be in the form of a bracket fixed to the wall or other convenient part of a house
or other building or to any convenient part of a railway, tramway or other carriage
or structure, but in any case it must be provided with a support for the seat and
another for the back which are fixed rigidly in relation with each other. On this
frame or support I mount a seat hinged in any suitable manner to a back and
resembling the seat and back of a chair, minus the legs.
This seat and the back may be stuffed and upholstered in any desired manner.
Between the seat proper and the seat support, I place springs which are fixed to
the respective parts in such manner as to permit of the seat moving in any
direction; and between the two parts of the back I place another spring or springs
which are fixed to one part and are provided at their loose ends with runners to
run upon a smooth surface formed on the other part.
The chair or seat may also be provided with arms of any desired character.
By the construction herein described any shocks or vibrations communicated to
the frame or support of the seat or chair are prevented by the intermediate springs
from being communicated to the seat and back proper, whilst the latter are capable
of being freely moved backwards, forwards and sideways within given limits as may
be desired.

page_text: direction; and between the parts a' and d I place another spring f (or it may be
springs) which is fixed to one part, the part d, and is provided at its loose end with
a runner f¹ to run upon a smooth surface formed on the other part, which as
shown in the drawings is the central cross rail of the back a'.
The chair or seat may also be provided with arms of any desired character but
in such case they should be fixed rigidly to the seat b so as to move therewith.
The springs e and shown in the drawings are of the character known as the
cradle spring but although I prefer to employ such description of springs other
classes of springs may be employed.
By the construction herein described any shocks or vibrations communicated to
the frame or support of the seat or chair are prevented by the intermediate
springs and f from being communicated to the seat b and back d whilst the
latter are capable of being freely moved backwards, forwards and sideways within
given limits as may be desired, in addition to which they are capable of rising and
falling in relation to the seat a and back a¹.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be 'performed, I declare that what
I claim is
A chair or seat constructed with seat and back supports a a¹ and with seat b and
back d hinged together at c and having springs ef and runner f¹ interposed
between the parts substantially as herein shown.and described and for the purpose
stated.