IMPROVED SPRINGS FOR SPRING MATTRESSES COUCHES CHAIRSS AND OTHER ARTICLES FOR SITTING OR RECLINING UPON
Year: 1882

page_text: LETTERS PATENT to George Henry Slack of the city of Manchester in the
County of Lancaster Spring mattress and Bedding manufacturer, for an
Invention of IMPROVED SPRINGS FOR SPRING MATTRESSES COUCHES CHAIRS
PROVISIONAL SPECIFICATION left by the said. George Henry Slack
at the Office of the Commissioners of Patents on the 5th August 1882.
GEORGE HENRY SLACK, of the City of Manchester, in the County of Lancaster,
Spring Mattress and Bedding Manufacturer IMPROVED SPRINGS FOR SPRING
MATTRESSES, COUCHES, CHAIRS, AND OTHER ARTICLES FOR SITTING OR RECLINING
UPON
"
This invention consists in forming an eye or loop at one end of a piece of steel
wire and then at any required distance from the loop bending the wire first into a
semi-circular or segmental form, and then into one, two or more coils of smaller
diameter, after which the wire is again bent to a semicircular or segmental form,
and continued in a straight line to be bent at its end into a loop or eye similar to
the one first mentioned, the smaller coils being above or below the segmental part
as may be desired.
These springs when properly hardened and tempered are used in a longitudinal,
transverse or angular direction as required, and when in use it will be found that
they combine strength, elasticity, and convenience in a more perfect manner than
has hitherto been attained by any other description of spring.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said George Henry Slack in the Great Seal Patent Office on the
5th February 1883.
GEORGE HENRY SLACK of the City of Manchester, in the County of Lancaster,
Spring Mattress and Bedding Manufacturer "IMPROVED SPRINGS FOR SPRING
MATTRESSES, COUCHES, CHAIRS AND OTHER ARTICLES FOR SITTING OR RECLINING
UPON
12
This invention consists in forming an eye or loop at one end of a piece of steel
wire, and then at any required distance from the loop bending the wire first into
a semi-circular or segmental form and then into one, two, or more coils of smaller
diameter, after which the wire is again bent to a semi-circular or segmental form
and continued in a straight line, to be bent at its end into a loop or eye similar to
the one first mentioned, the smaller coils being above or below the segmental part
as may be desired; or between the end loops the wire may have one two or more
circular coils of equal or different diameters.
On the accompanying sheet of drawings Figs. 1. and 2. are side and end views
of a spring, having between the loops a, segmental coils b, and two smaller coils c,
the latter coils being below the segmental ones. Figs. 3, 4, and 5, are side views,
and 6 and 7 plans of springs, having between the loops d, segmental or curved
coils e, and one two or more smaller coils f, above the larger ones. Fig. 8 is a
side view, and Fig. 9 a plan of a spring, having between the loops g three circular
coils h, but one, two, or more may be used if required, and Fig. 10 is a side view,
and Fig. 11 a plan of a spring having between the loops three circular coils placed
at right angles, but I may here state that I do not confine myself to any precise
angles, shapes, or dimensions. These springs when properly hardened and tempered
are used in a longitudinal, transverse or angular direction as required, and when
in use it will be found that they combine strength, elasticity and convenience in
a more perfect manner than has hitherto been attained by any other description
of spring. Having now described the nature and particulars of my said Invention,
I desire it to be understood that for Spring Mattresses, Couches, Chairs and
other articles for sitting or reclining upon I claim the improved springs herein-
before described and illustrated on the accompanying sheet of drawings, or any
mere modification thereof, In Witness whereof, I, the said George Henry Slack
have hereunto set my hand and seal this second day of February in the year of
our Lord one thousand eight hundred and eighty-three.