Improvements in Chairs.
Year: 1889

page_text: Date of Application, 25th Feb, 1889
Complete Specification Left, 25th Nov., 1889-Accepted, 11th Jan., 1890
PROVISIONAL SPECIFICATION.
Improvements in Chairs.
We, JOHN HARRINGTON of the Enamel and Cradle Spring Works, Coventry, in
the County of Warwick, Manufacturer, and JOHN HOPPER, of 398 Fulham Road,
in the County of Middlesex, Manager, do hereby declare the nature of this inven-
tion to be as follows:-
The invention has for its object improvements in chairs, and relates to that class of
chair in which the seat is carried by springs interposed between it and the lower
portion of chair frame.
Heretofore such description of chair has bad the seat immoveable, execept so far as
it was permitted to move by the springs; this has prevented their use in places of
public resort.
Now, according to our present invention, we so construct the chair that the seat,
while remaining attached to the springs, is also capable of being tilted back out of the
way when more space in front of the chair is required.
For this purpose we fix the seat carrying springs to a moveable frame, which we
mount on necks or trunnions carried by the lower part of a stationary frame which
we form like a chair frame with rigid arms and back. The frame carrying the seat,
when the chair is in use, rests on the lower part of the fixed frame, and when turned
back out of use, the seat or the frame carrying the same, abuts against the back
part of the lower portion of the fixed frame, or against a cross bar carried thereby.
The trunnions are placed a short distance forward of the back edge of the seat, and
when in position for use, the forward part of the latter or of the frame carrying it may
rest on a cross bar of the fixed frame, or it may have projecting lugs which rest on the
side bars of such frame. The seat may however be retained in either position by other
suitable stops.
The front edge of the seat and spring carrying frame project when the chair is
in use some distance in front of the fixed frame, which latter is made comparatively
shallow from front to back.
The chair frame may be made either of metal or wood.
We prefer to use springs similar to those shown and described in the Specification
of Letters Patent No. 9055 of the year 1885.
Dated this 25th day of February 1889.
COMPLETE SPECIFICATION.
Improvements in Chairs.
We, JOHN HARRINGTON of the Enamel and Cradle Spring Works, Coventry, in
the County of Warwick, Manufacturer, and JOHN HOPPER of 398 Fulham Road,
in the County of Middlesex, Manager, 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, reference being bad to the
accompanying drawings, and to the figures and letters marked thereon.
The invention has for its object improvements in chairs, and relates to that class of
chair in which the seat is carried by springs interposed between it and the lower
portion of chair frame.

page_text: Heretofore such description of chair has had the seat immoveable, except so far
as it was permitted to move by the springs; this has prevented their use in places of
public resort.
Now, according to our present invention, we so construct the chair that the
seat, while remaining attached to the springs, is also capable of being tilted back
out of the way when more space in front of the cbair is required.
for use.
Figure 1 is a side view of our improved chair representing the seat in position
Figure 2 is another side view representing the seat tilted back, and
Figure 3 is a plan thereof with the seat removed. In all the figures like parts
are indicated by similar letters of reference.
In carrying our invention into effect, we fix the seat carrying springs a to a
moveable frame b, which we mount on necks or trunnions c carried by the lower part
of a stationary frame d, which we form like a chair frame with rigid arms and back.
In some cases we may connect the moveable seat frame to the chair frame by hinges
instead of trunnions. The frame b carrying the seat e, when the chair is in use, rests
on the lower part of the fixed frame d, and when turned back out of use, the seat e,
or it may be the frame b carrying the same, abuts against the back part of the
lower portion of the fixed frame, or, as shown in the drawings, against a cross
bar d¹ carried thereby. The trunnions c are placed a short distance forward off the
back edge of the seat e, and when in position for use, the forward part of the latter,
or of the frame 6 carrying it, may rest on a cross bar of the fixed frame d, or it may
have, as shown in the drawings, projecting lugs 61, which rest on the side bars d² of
such frame d. The seat e may however be retained in either position by other
suitable stops.
The front edge of the seat e and spring carrying frame project when the chair
is in use some distance in front of the fixed frame d, which latter is made comparatively
shallow from front to back.
The chair frame may be made either of metal or wood.
We prefer to use springs a similar to those shown and described in the specifiation
of Letters Patent No. 9055 of the year 1885, but other suitable springs may be
interposed between the frame b and the seat e.
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 chairs in which the seat is carried by springs interposed between it and the fixed
part of the chair frame, connecting such springs to a moveable frame mounted
on trunnions or hinges and provided with suitable stops, substantially as herein shown
and described and for the purpose stated.
Dated this 5th h day of No
ber 1990.
JOHN
HARRINGTON.
JOHN HOPPER.
By Harris & Mills,
23, Southampton Buildings, London, Agents.