IMPROVEMENTS IN BABY JUMPERS
Year: 1883

page_text: LETTERS PATENT to Alexander Melville Clark of the firm of A. M and
W. Clark of 53 Chancery Lane in the County of Middlesex Fellow of the
Institute of Patent Agents for an Invention of IMPROVEMENTS IN BABY
JUMPERS communicated to him from abroad by Murray M Raymond and
David Barton, both of Corry in the County of Erie and State of Pennsylvania,
United States of America
PROVISIONAL SPECIFICATION left by the said Alexander Melville Clark at
the Office of the Commissioners of Patents on the 8th June 1883.
"
ALEXANDER MELVILLE CLARK of the firm of A. M and W Clark of 53 Chancery
Lane in the County of Middlesex Fellow of the Institute of Patent Agents
"IMPROVEMENTS IN BABY JUMPERS [communicated to him from abroad by
Murray M Raymond and David Barton, both of Corry in the County of Erie and
State of Pennsylvania, United States of America]
This Invention consists in a wire suspending device to form a neat, simple and
efficient seat frame, back rest and arm supports, together with an arrangement of
seat body adapted to the said frame the whole forming a more convenient and
better jumper than those now in use. The frame of the jumper is made of steel or
other spring wire and the jumper is suspended from the ceiling or other object by
means of an ordinary coiled spring and an adjusting strap. A loop is made of the
wire terminating in a hook eye at each end, both of which books are together
arranged to connect in the lower end of the strap. From the said hook eyes the
two parts of the wire spring apart, and bow or curve to one side in the suspending
parts and then return across the suspension line of the spring and strap forming
arms of the seat frame; thence by sharp return bends said parts form sides to the
seat frame and a back to which any approved leather, canvas or other webbing of
suitable material is connected by straps or other devices in any suitable manner.
One strap is extended over the lap space from side to side of the wire frame as a
means of securing the child from falling out, and another strap is stretched up from
I Price Gd 1

page_text: the seat bottom between the sides of the seat and connected to said strap at the
middle if desired to be adjusted between the legs of the child as a further means of
safety.
By reason of the bow shape of the wire loop the seat falls directly under the
point of suspension and thus balances properly, and the seat is more accessible than
when suspended by hangers of cords and other devices falling in straight lines.
The strap to which the frame is hooked may be made to spring the side of the seat
frame towards each other and allow them to swing apart according as the seat is
required to be wide or narrow.
When the child is seated securely in the jumper, and when the spring is not
forcibly expanded to raise and lower or "jump" the child, the elasticity of the
coiled suspension spring will give the jumper all the advantages of an easy chair
for the coinfort of its occupant.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Alexander Melville Clark in the Great Seal Patent Office on the
8th December 1883.
"
ALEXANDER MELVILLE CLARK, of the firm of A. M. and W. Clark of 53 Chancery
Lane, in the County of Middlesex, Fellow of the Institute of Patent Agents.
"IMPROVEMENTS IN BABY JUMPERS A communication to me from abroad by
Murray M. Raymond and David Barton, both of Corry, in the County of Erie and
State of Pennsylvania, United States of America,
This Invention consists of a wire suspending device to form a neat, simple and
efficient seat frame, back rest and arm supports, together with an arrangement of
seat body adapted to the said frame the whole forming a more convenient and
better jumper than those now in use, all as hereinafter fully described.
The Invention is illustrated in the accompanying drawing forming part of this
specification, which represents the improved baby jumper and swing in perspective
view.
An ordinary coiled suspending spring a, and strap b, are used to suspend the
jumper from the ceiling or other object for the connection of the attaching screw
eye c, and a steel or other spring wire is employed for the frame. A loop is made
of the said wire, terminating in a hook-eyed at each end, both of which hooks are
arranged to connect in the lower end of the adjusting strap b. From the said
hook-eyes the two parts of the wires spring apart, and bow or curve to one side in
the suspending parts e and then return across the suspension line of the spring a
and strap b forming arms f of the seat frame; thence by sharp return bends at g
said parts form sides h to the seat frame and a back thereto at i to which any
approved leather, canvas or other webbing ; of suitable material is connected by
straps or other devices in any suitable manner. The strap is extended over
the lap space from side to side of the wire frame as a means of securing the child
from falling out, and another strap m is stretched up from the seat bottom between
the sides of the seat and connected to strap at the middle if desired to be adjusted
between the legs of the child as a further means of safety.
It will be seen that by the bow shape of the wire loop at e the seat falls directly
under the point of suspension and thus balances properly, and also that by such
form of the wires the seat is more accessible than when suspended by hangers of
cords and other devices falling in straight lines. It will also be seen that the
construction of the device by simply shaping the single wire is very simple and
cheap. The strap 7 may be made to spring the sides of the seat frame towards
each other and allow them to swing apart according as the seat is required to be
wide or narrow.
When the child is seated securely in the jumper, and when the spring is not
forcibly expanded to raise and lower or "jump" the child, the elasticity of the
spring a, will give the jumper all the advantages of an easy chair for the comfort
of its occupant
Having described the nature of the said Invention and the manner of performing
the same I declare that what I claim as the Invention to be protected by the
herein before in part recited Letters Patent is :
1 The seat frame of a baby jumper, consisting of a wire loop shaped at one
end to be suspended thereby, and at the other end to form the seat support, the
arms, and the back of the jumper, substantially as specified.
2nd The seat frame of a baby jumper, consisting of a wire loop shaped into a

page_text: hook or eye d at one end, a seat back i, sides h, and arms fat the other end, and
the parts e, e, connecting these ends both bent backward, as shown and described.
3d The combination with the frame of a baby jumper consisting of a wire loop,
shaped to form the suspending hook, the arms, sides and back thereof, of a seat
suspended to the sides and back, as shown and described.
4th The combination with the frame of a baby jumper consisting of a wire loop
shaped as described, and a seat supported thereby of a cross strap connecting the
arms of the jumper, and an adjustable middle strap connecting the front edge of
the seat with said cross strap as and for the purpose specified.
In witness whereof, I the said Alexander Melville Clark, have hereunto set
my hand and seal this eighth day of December A.D. 1883.
A. M. CLARK (L.S.)