Improvements in Adjustable Baby Chairs.
Year: 1889

page_text: Date of Application, 26th Nov., 1889
Complete Specification Left. 25th July, 1890-Accepted, 30th Aug., 1890
CDEAMLOV
Improvements in Adjustable Baby Chairs.
JAMES SETON PRENTICE Engineer No. 22 Portman Street Kinning Park,
Renfrewshire Scotland, do hereby declare the nature of this invention to be as
follows:-
The nature of my invention is the locking by an easy & simple method, a baby
chair to any desired position.
For this purpose I have provided a horizontal crank shaft, or bar, having two
cranks and one connection link upon it, fastened down at side of chair with bushes
or plumber blocks, and a faucit with holes at given distances attached to quadrant
of legs of chair-also a connecting rod attached to link of crank shaft, with a
spiral spring fixed upon said connecting rod, which has the desired action of forcing
the cranks into holes made in faucit of quadrant, so keeping the chair in any desired
position.
Dated this 25th day of November 1889.
COMPLETE SPECIFICATION.
Improvements in Adjustable Baby Chairs.
I, JAMES SETON PRENTICE of 22 Portman Street, Kinning Park, Renfrewshire,
North Britain, 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 :-
This invention which relates to improvements in adjustable baby chairs has for its
object to effect the adjustment and locking to any desired position of the baby chairs
in a simpler, and more efficient manner than hitherto.
In carrying out my said invention I provide a horizontal shaft or bar which has
two cranks and one connecting link mounted on it, the end of which is connected to
the lower end of an upright connecting rod, having suitable handle and spring
attached, so as to give the desired action to the cranks on the shaft, the said cranks
being thus caused to engage in recesses or holes formed at the desired positions on
suitable faucets provided on the quadrants of the back legs, the said shaft or bar and
its connections being carried in bushes or plumber blocks which are attached to the
main framing of the chair.
In order that my said invention may be more readily understood and easily carried
into effect I will proceed to describe the same with reference to the annexed sheet of
drawings.
Figures 1, and 2, are side elevation and front elevation respectively, of an adjustable
baby chair having my improvements attached.
Figures 3, and 4, are side elevations and plans respectively of my improvements.
Referring to the said figures I provide a horizontal crank, shaft or bar A, which is
carried in bushes or plumber blocks a, attached to the main framing B, of the chair,
this shaft or bar has mounted upon it in any suitable manner two cranks C, and D,
the former of which has its one end prolonged so as to form a connecting link E, the
end of which is attached to the lower end of the connecting rod F, which is provided
with a suitable handle such as is shown at f, or otherwise, and has mounted on it
between the washers, f, and f2, a suitable spiral or other spring G, which gives the
desired action of forcing the ends c, and d, of the cranks C, and D, into the holes or
recesses H, which are formed at the desired positions in the peripheries of the

page_text: faucets J, formed on or attached to the quadrant K, of the back legs, thus enabling
the said baby chairs to be easily and simply adjusted to, and held in any desired
position.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1st. In adjustable baby chairs, the employment of a horizontal shaft A, having
cranks C, and D, and connecting link E, the said cranks working into the
recesses H, provided in the faucets J, of the back leg quadrants K, all sub-
stantially as and for the purposes herein before described and shown in the annexed
drawings.
2nd. In adjustable baby chairs, the employment of faucets J, having recesses H,
the said faucets being either formed on or attached to the quadrants K, all sub-
stantially as and for the purposes hereinbefore described and shown in the annexed
drawings.
3rd. The general arrangement and combination of the various parts constituting
my improvements in adjustable baby chairs, all substantially as and for the purposes
herein before described with reference to the annexed drawings.
JCHNSONS
115, St. Vincent Street, Glasgow, Applicant's Agents.