Year: 1885

page_text: I JOHN HARRINGTON of the "Enamel and Cradle Spring Works," Coventry in
the County of Warwick, Manufacturer, do hereby declare the nature of this
invention to be as follows:-
The invention relates to novel constructions of springs to be used in lieu of those
now employed and interposed between the body of a carriage or velocipede and
the wheels or to support seats for the same or for other purposes.
JT.
In carrying my invention into effect I employ wire or rod metal of the required
strength and I bend and coil it into a spring having somewhat the form of an
ordinary double elliptic spring. I employ two or more of these springs connected
together side by side to obtain the required strength.
1
Each of these springs may be formed of a single length of wire or rod metal
formed with a central horizontal upper and lower part connected by a coil' at each
end thereof to outwardly projecting angular parts which approach each other and
are connected together by coils the two ends of the length of wire or rod "métal
being connected together by suitable clamps."
.3'
1. 07
12 ° t [1
Or each of these springs may be formed in two parts the ends of which meet
together in the central horizontal upper and lower parts thereof and are"
rosecured
together by suitable clamps.
Or again each spring may be formed in two parts each of which will represent
the upper and lower parts of a double elliptic spring in which case the onter ends
of each half will be formed with a loop or eye through which a connecting bolt
will be passed in a similar manner to the bolts connecting the two parts of an
ordinary double elliptic spring.

page_text: Purposes.
I JOHN HARRINGTON of "The Enamel and Cradle Spring Works" Coventry in
the County of Warwick, Manufacturer 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 :-
The invention relates to novel constructions of springs to be used in lieu of
those now employed and interposed between the body of a carriage or velocipede
and the wheels or to support seats for the same or for other purposes.
In carrying my invention into effect I employ wire or rod metal of the required
strength and I bend and coil it into a spring having somewhat the form of an
ordinary double elliptic spring. I sometimes employ two or more of these springs
connected together side by side to obtain the required strength.
Each of these springs may be formed of a single length of wire or rod metal
formed with a central horizontal upper and lower part connected by a coil at each
end thereof to outwardly projecting angular parts which approach each other and
are connected together by coils, the two ends of the length of wire or rod metal
being connected together by suitable clamps.
Or each of these springs may be formed in two parts, the ends of which meet
together in the central horizontal upper and lower parts thereof and are secured
together by suitable clamps. Or again each spring may be formed in two parts,
each of which will represent the upper and lower parts of a double elliptic spring
in which case the outer ends of each half will be formed with a loop or eye
through which a connecting bolt will be passed in a similar manner to the bolts
connecting the two parts of an ordinary double elliptic spring.
And in order that the said invention may be more clearly understood and
readily carried into effect, I will proceed aided by the accompanying drawings
1
1
.

page_text: arins c which approach each other and are connected together by coils c¹. The two
ends of the length of wire or rod metal meet at the centre of the upper part a and
are connected together by a clamp a¹ or a spring of the forms herein described
may be made of a single length of metal wire or rod terminating in two eyes cl
connected together by a bolt passing through the same.
In the arrangement shown at Figure 2 the spring is formed of two lengths of
wire or rod metal the ends of which meet in the centre of the horizontal upper and
lower parts a where they are connected together by clamps a¹.
In this example the arms c instead of assuming the angular form shown at
Figure 1, are curved or bowed from the coils b to the coils c
In the modification shown at Figure 3 the spring is formed in two parts each of
which represents the upper and lower part of a double elliptic spring. In this
case the outer end of each arm c is formed with a loop or eye c' through which a
connecting bolt d is passed in a similar manner to that employed in connecting the
two parts of an ordinary double elliptic spring.
As in the preceding Figure the arms c are shown of a curved or bowed form.
Two or more springs constructed as herein shown and described may be
connected together side by side by means of bolts d passing through the coils or
eyes c¹ in order to obtain the required strength of spring; or if desired a single
spring may be employed alone.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
I claim is :-
1. An elliptic spring consisting of a single length of wire or rod metal formed
with central horizontal upper and lower parts a and coils b, arms c and coils o¹ the
ends of which length of metal meet and are connected together all in manner
substantially as herein shown and described with respect to Figure 1.
2. An elliptic spring formed of two lengths of wire or rod metal constructed
with coils barms c and coils or eyes c¹ each length forming half of the spring the
ends of which lengths meet in the central horizontal upper and lower parts a
where they are secured together by clamps such as a¹ all in manner substantially
as herein shown and described with respect to Figure 2.
3. An elliptic spring constructed of wire or rod metal and formed in two parts
each consisting of central horizontal part a coils b arms c and eyes or loops c¹ such
parts being connected together by bolts d all in manner substantially as herein
shown and described with respect to Figure 3.
4. The employment of two or more springs of the character herein shown and
described mounted side by side and connected together by bolts d as and for the
purpose stated.