IMPROVEMENTS IN THE CONSTRUCTION OF ELLIPTICAL SPRINGS FOR VEHICLES."
Year: 1881

page_text: LETTERS PATENT to Frank Joynes, of Sheffield, in the County of York, for
an Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF ELLIPTICAL
SPRINGS FOR VEHICLES."
PROVISIONAL SPECIFICATION left by the said Frank Joynes at the Office
of the Commissioners of Patents on the 14th October 1881.
FRANK JOYNES, of Sheffield, in the County of York.
CONSTRUCTION OF ELLIPTICAL SPRINGS FOR VEHICLES."
"IMPROVEMENTS IN THE
This Invention relates to the construction of elliptical springs for vehicles.
This Invention is an improvement on that patented to me the Twenty second
day of February, One thousand eight hundred and seventy eight, and numbered
seven hundred and thirty eight.
This Invention consists in fitting on to the two ends of a pair of elliptic springs
a spring clip in combination with boxes or collars. The clip will surround the two
ends of the springs and project over the plates of each. The clip will have one or
more projections (round, square, or other convenient form), which will enter and fit
into one or more recesses in the boxes or collars used therewith. The clip will be
of spring steel, and the boxes or collars will be of malleable cast iron or other
suitable material.
One pair of collars or boxes will be fitted over the spring clip, and will be secured
by a bolt and nut or similar appliance.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Frank Joynes in the Great Seal Patent Office on the 14th April
1882.
FRANK JOYNES, of Sheffield, in the County of York. "IMPROVEMENTS IN THE
CONSTRUCTION OF ELLIPTICAL SPRINGS FOR VEHICLES."
This Invention relates to the construction of elliptical springs for vehicles.
This Invention is an improvement on that patented to mo the Twenty second
day of February, One thousand eight hundred and seventy eight, and numbered
seven hundred and thirty eight.
This Invention consists in fitting on to the two ends of a pair of elliptic springs
a spring clip in combination with boxes or collars. The clip will surround the two
ends of the springs and project over the plates of each. The clip will have one or
more projections (round, square, or other convenient form), which will enter and fit
into one or more recesses in the boxes or collars used therewith. The clip will be
of spring steel, and the boxes or collars will be of malleable cast iron or other
suitable material.
One pair of collars or boxes will be fitted over the spring clips, and will be secured
by bolts and nuts or similar appliances.
The accompanying Drawing illustrates my Invention as applied to a pair of
elliptical springs for a road vehicle. Fig. 1 is a front view partly in section; Fig. 2
is a plan; Fig. 3 is a sectional plan as taken through the dotted line W, X (Fig. 1);
Fig. 4 is a sectional elevation as taken through the dotted line Y, Z (Fig. 2).
A, A', are the back plates curved at the ends to fit to the stem of the bolt D; B is
the elastic steel clip, which is made to fit the curved ends of the back plates, and
which has two projections, as shown at 1 and 2; C is the box having a groove or
two recesses, into which the two projections on the clip B fit; D is the bolt which
secures the two back or top plates A, A', the spring clip B, and the box C together.
Fig. 5 to Fig. 10 show modifications of the box C above described; Fig. 5 is a plan,
Fig. 6 is an inside view in elevation, and Fig. 9 is a longitudinal section of one of
a pair of boxes for a round bolt, as used with the improved spring clip B; Figa. 7,
8, and 10 show similar views of one of a pair of boxes for a square bolt, as used
with the improved spring clip B.
Having now described and particularly ascertained the nature of my said
Invention, and the manner in which the same is or may be used or carried into
effect, 1 would observe in conclusion that what I consider to be novel and original,
and therefore claim as the Invention secured to me by the herein-before in part
recited Letters Patent is,-
Improvements in the construction of elliptical springs for vehicles by curving the
ends of the back or top plates, and combining therewith an elastic metallic clip and
box or boxes, with bolt and nut or other equivalent appliance for securing the parts
together, thus forming an elastic end joint for the said elliptical springs, substantially
as herein before described, and as illustrated by Fig. 1 to Fig. 10 inclusive of the
accompanying Drawings.
In witness whereof, I, the said Frank Joynes, have hereunto set my hand and
seal, this Eighth day of April, in the year of our Lord One thousand