An Improved Baby-jumper.
Year: 1890

page_text: Date of Application, 23rd Apr., 1890
Complete Specification Left, 2nd June, 1890-Accepted, 1st Nov., 1890
PROVISIONAL SPECIFICATION.
An Improved Baby-jumper.
I AUGUSTE SCHAEFER 250 Cambridge Road Hackney in the County of Middlesex
Artificial Teeth Manufacturer do hereby declare the nature of this invention to be as
follows:
An improved baby jumper consisting of two rods fixed on a stand, one rod fixed on
the centre of stand and the other a short distance from the centre of stand, a tube
encasing centre rod spring (indiarubber or otherwise) the tube connected by a treadle
to stand, surmounted by a chair.
AUGUSTE SCHAEFER.
An Improved Baby-jumper.
I, AUGUSTE SCHAEFER, 250 Cambridge Road, London, E., Dentist, 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 relates to the production of a baby jumper which is constructed in
such a manner as to allow of its being manipulated by the foot whilst the attendant or
person in charge is free to perform any other domestic duties at the same time.
In the annexed explanatory drawings
Figure 1 is a perspective view and
Figure 2 an elevation partly in section illustrative of my said invention.
My improved baby jumper comprises a preferably circular base D and vertical
tubular casing C. Within the tubular casing C is disposed and capable of free
telescopic movement therein a spindle, rod or tube B surmounted by a chair or seat A.
A strong spiral spring F is enclosed within the lower portion of the casing C and
presses against the lower end of the rod or tube B. A pedal E actuated by the foot of
the attendant is hinged to the base D and connected by a chain, rope or equivalent b
to the hook or projection a of the rod or tube B. In order to regulate the tension of
the spring F I adapt to the base D a small vertical tube d carrying a rod e, this rod
being adjusted at any desired height by a nut or equivalent and connected at its upper
end to the hook or projection a' of the rod or tube B by means of a spring, india rubber
band or like flexible contrivance 61 Figure 1. The rod e might, if so desired, be
inserted within a screw threaded lug adapted to the side of the casing (), said rod
being adjusted by a lock nut or equivalent means Figure 2. The hooks or projec-
tions a, a, slide vertically within their respective slots c, c¹, or guides formed in or by
the casing C.
When pressure is applied by the foot of the attendant to the hinged treadle E the
chair A¹ is caused to descend, and, upon the pressure being removed it again ascends
by virtue of the power stored up by the spring F aforesaid. A too rapid ascent of the
chair A when the pressure is taken from the pedal E is checked by the previously
described flexible connection b¹.

page_text: 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 :-
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 :-
baby jumper, constracted and operating substantially as herein set forth and
shown.
A
1100
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C., Agent for Applicant.

page_text: Date of Application, 23rd Apr., 1890
Complete Specification Left, 2nd June, 1890-Accepted, 1st Nov., 1890
An Improved Baby-jumper.
I AUGUSTE SCHAEFER 250 Cambridge Road Hackney in the County of Middlesex
Artificial Teeth Manufacturer do hereby declare the nature of this invention to be as
follows:-
An improved baby jumper consisting of two rods fixed on a stand, one rod fixed on
the centre of stand and the other a short distance from the centre of stand, a tube
encasing centre rod spring (indiarubber or otherwise) the tube connected by a treadle
to stand, surmounted by a chair.
An Improved Baby-jumper.
I, AUGUSTE SCHAEFER, 250 Cambridge Road, London, E., Dentist, 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 relates to the production of a baby jumper which is constructed in
such a manner as to allow of its being manipulated by the foot whilst the attendant or
person in charge is free to perform any other domestic duties at the same time.
In the annexed explanatory drawings
Figure 1 is a perspective view and
Figure 2 an elevation partly in section illustrative of my said invention.
My improved baby jumper comprises a preferably circular base D and vertical
tubular casing C. Within the tubular casing C is disposed and capable of free
telescopic movement therein a spindle, rod or tube B surmounted by a chair or seat A.
A strong spiral spring F is enclosed within the lower portion of the casing C and
presses against the lower end of the rod or tube B. A pedal E actuated by the foot of
the attendant is hinged to the base D and connected by a chain, rope or equivalent b
to the hook or projection a of the rod or tube B. In order to regulate the tension of
rod e
the spring F I adapt to the base D a small vertical tube d carrying a this rod
being adjusted at any desired height by a nut or equivalent and connected at its upper
end to the hook or projection a' of the rod or tube B by means of a spring, india rubber
band or like flexible contrivance Figure 1. The rod e might, if so desired, be
inserted within a screw threaded lug d adapted to the side of the casing C, said rod
being adjusted by a lock nut or equivalent means Figure 2. The hooks or projec-
tions ay a', slide vertically within their respective slots c, c³, or guides formed in or by
the casing C.
When pressure is applied by the foot of the attendant to the hinged treadle E the
cbair A is caused to descend, and, upon the pressure being removed it again ascends
by virtue of the power stored up by the spring F aforesaid. A too rapid ascent of the
chair A when the pressure is taken from the pedal E is checked by the previously
described flexible connection b¹.

page_text: 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 1
claim is :-
:-
A baby jumper, constructed and operating substantially as herein set forth and
Dated 20 Apr 1
JAMES STEVENSON,
Gray's Inn Chambers, 20, High Holborn, London, W.C., Agent for Applicant.