Improvements in Rocking or Swinging Chairs.
Year: 1897

page_text: We, WILLIAM SEATON MCLENNAN and THOMAS MORTON, both of 16, Henrietta
Street, in the County of Glasgow, North Britain, Chair Manufacturers, do hereby
declare the nature of this invention to be as follows, that is to say:-
This invention has for its object to improve the construction of chairs the seats
of which have a combined rocking and swinging motion.
The base of a chair made with the improvements is made with sides extending
up nearly to the underside of the seat, and the sides have each a horizontal bar
along the top, or parts which project forward and backward. To the outer sides of
the ends of the top bar, or to the projecting parts suspending links are jointed, and
the lower ends of these links are jointed to what may be termed the under side
frames of the seat. The links are between the side frames of the base and the
under side frames of the seat each link being jointed on its inside to the former and
on its outside to the latter. The under side frames of the seat are each made with
a top side bar to which any suitable kind of seat may be fixed.
For locking the seat or preventing its motion when desired, there is jointed to
the under side of the seat a wooden or other lever made with one or more notches
adapted to engage with a cross rail of the base frame. The locking lever is
ordinarily held up by any convenient kind of latch or catch, and when the seat is
to be locked the catch is released and the lever turns down a little so that it engages
with the cross rail.
Springs may be interposed between the seat and its side frames, or the links may
be made to consist of tension springs.
Improvements in Rocking or Swinging Chairs.
We, WILLIAM SEATON MCLENNAN and THOMAS MORTON, both of 16, Henrietta
Street, in the County of Glasgow, North Britain, Chair Manufacturers, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement, that is to say:-
This invention has for its object to improve the construction of chairs the seats
of which have a combined rocking and swinging motion.

page_text: In carrying out our invention, we construct the base, and the seat of the chair,
each, with side frames. The base frames are made to extend up nearly to the
under side of the seat, and suspending links or equivalents are jointed to their
upper outer sides, and to the lower inner sides of the seat frames. A locking
device is also provided for preventing the motion of the seat when desired.
And in order that our said invention and the manner of performing the same
may be properly understood we hereunto append a sheet of explanatory drawings
to be hereinafter referred to and showing a rocking or swinging chair as made
with our improvements.
Figures 1, and 2, of the drawings, are, respectively, a vertical section and a back
elevation of the chair. The same reference letters are used to mark the same or
like parts wherever they are repeated.
The base, A, of the chair as shown with our improvements is made with sides,
B, C, extending up nearly to the under side of the seat, D, and the sides have each
a horizontal bar, E, F, along the top these parts projecting forwards and back-
wards. To the outer sides of the ends of the top bars, E, F, suspending links, G, H,
are jointed, and the lower ends of these links are jointed to the under side frames,
J, K, of the seat, 1). The links, G, H, are between the side frames, B, C, of the
base, A, and the under side frames, J, K, of the seat, D, each link being jointed on
its inside, to the former, and on its outside to the latter. The under side frames,
J, K, of the seat, D, are each made with a top side bar, L, M, to which any suitable
kind of seat may be fixed.
For locking the seat, D, or preventing its motion when desired there is jointed
to the under side of the seat a wooden or other lever, N, made with one or more
notches, P, adapted to engage with a cross rail, R, of the base frame, A. The lock-
ing lever, N, is ordinarily held up by any convenient kind of catch, S, and when
the seat, 1), is to be locked the lever is released from the catch and is depressed
a little so that it engages with the cross rail, R.
Springs may be interposed between the seat, D, and its side frames, J, K, or
the links, G, H, may be made to consist of tension springs.
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:-
Constructing a rocking or swinging chair, with side frames connected by
suspending links or equivalents to a base frame, and with or without a locking
device substantially in the manner hereinbefore described and as shown in the
accompanying drawings.