IMPROVEMENTS IN SPINDLES AND BOLSTERS FOR SPINNING AND DOUBLING."
Year: 1881

page_text: LETTERS PATENT to Thomas Watson, of Ferguslie Works, Paisley, in the
County of Renfrew, Foreman Mechanic, for an Invention of "IMPROVEMENTS
IN SPINDLES AND BOLSTERS FOR SPINNING AND DOUBLING."
PROVISIONAL SPECIFICATION left by the said Thomas Watson at the
Office of the Commissioners of Patents on the 13th December 1881.
THOMAS WATSON, of Ferguslio Works, in the County of Renfrew, Foreman
Mechanic. "IMPROVEMENTS IN SPINDLES AND BOLSTERS FOR SPINNING AND
DOUBLING."
These improvements relate to spindles of any class, kind, or description, and
have for their object elasticity of motion at any speed, and are designed to
overcome the excentricity of motion at high speeds; it is likewise applicable to
common or elongated bolsters and constructed as follows:-
=
I take as an instance an ordinary Rabeth spindle having a bush on the lower
part of it, the outside of such bush being chambered at any length, leaving at top
and bottom a shoulder set down square. This bush and spindle pass freely into
bolster, but in the before named chamber I place two or more verticaly split
springs, the inner ends of which are made to fit the body of the chamber, swelling
out each in the centre in a balloon shape. The balloon part of these split springs
are compressed into the bolster, thereby pressing the bush firmly yet elasticaly in
such bolster. As a matter of course the spindle is neatly and well fit, having
its customary lubricating chambers and other matters not necessary here to
mention.
"
I know that Letters Patent were granted to John Smith Raworth on the
5th day of August 1874, numbered 2707, for Machines for Spinning and
Doubling Fibrous Materials," in which he sought to claim "spiral, helical, or other
springs," in such manner as to allow the bolsters and footsteps freedom to move.
Altho' the said John Smith Raworth has thus specified in his Provisional Speci-
fication spiral, helical, and other springs, in his Final Specification he neither shows

page_text: nor speaks of spiral or helical springs, but shows on his Drawings, Figs. 3, 4, 5,
and 6, what he calls cliptical and crescent springs. The eliptical springs, as shown,
are imposible to make without a joint, and the acute angles would be fatal in
both making and endurance, and the making of these kind would be costly and
very troublesome in applying, as each spindle would require six, the shape of the
bolster chamber being hexagonal.
I likewise know that the ambiguity of his provisional description and want of
correspondence in his final Specification with his Provisional Specification has been
fatal to his claims. I know further that he failed in making sucessfully spiral, helical,
eliptical, or crescent springs, and finaly I have neither desire nor intention to use
anything he has described and could not sucessfully accomplish, nor anything he
could legaly claim.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Watson in the Great Seal Patent Office on the 10th March
1882.
THOMAS WATSON, of Ferguslie Works, Paisley, in the County of Renfrew,
Foreman Mechanic. "IMPROVEMENTS IN SPINDLES AND BOLSTERS FOR SPINNING
AND DOUBLING."
These improvements are applicable to any kind of spindles, and have for their
object elasticity of motion at any speed without excentricity or oscilation. It is
likewise applicable to common or elongated bolsters.
Fig. 1 on my Drawings shows a full section of a Rabeth spindle, bush, bolster,
and sleeve.
Fig. 2, a section of verticaly split balloon shaped springs embracing at each end
the chamber body of bush.
Figs. 3 and 4 are elevation and plan of same; A, A, in Fig. 1, is the spindle;
B, the bolster; C, section of rail; D, sleeve and wharve; E, the bush; a, a, are
the split balloon shaped springs made a little shorter than the chamber in bush E.
Between shoulders e, e, these springs are compressed tightly into the chamber of
bush, the bush then being forced into the bolster is firmly held and kept from
turning round, yet equapoised and elasticaly held. When the spindle is running
at high speed the vertical split springs will form and become a permanent
cushion.
There will be less wear and tear, noise and power required for driving.
Figs. 2, 3, and 4 are simply section, elevation, and plan of the springs, of which
I use two or more to each spindle, which I increase or decrease in strength
according to the work or size of spindle requiring it.
Having described the several parts of my Invention, and the way I apply it,
I may here say that I know that "Letters Patent" were granted to John Smith
Raworth on the 5th day of August 1874, numbered 2707, for "Machinery for
Spinning and Doubling Fibrous Materials."
In the Provisional Specification of which he claimed and specialy defined spiral,
helical, or other shaped springs, in such manner as to allow the bolster and foot-
steps to move.
In his Final Specification he has not mentioned either of these springs, but
has shown on his Drawings, Figs. 3, 4, 5, and 6, elliptical and crescent springs.
The elliptical springs are shown without a joint and are simply imposible to make
in steel.
The crescent shapes were posibly tried, but failed. They were in the first place
expensive making, inefective in action, and troublesome in use.
The before named Patent was invalid from the ambiguity of Provisional
Specification and want of correspondence in the Final with the Provisional
Specification.
I likewise know that it failed in both making and useing sucessfully any of the
before named springs, and finaly, I desire it to be distinctly understood that I
have neither desire nor intention to use or claim anything he has either described
or tried to make use of, but what I claim as secured to me herein is, two or more

page_text: vertical split balloon shaped springs, or any mere modification of the same so
applied, substantialy as and for the purposes hereinbefore set forth.
In witness whereof, I, tho said Thomas Watson, have hereunto set my hand
and seal, this Sixth day of March, in the year of our Lord One thousand
eight hundred and eighty two.
JAMES ADAM,
Accountant,
Ferguslie,
JOHN LEWIS,
Agent,
Paisley, Witness.
Sun Chambers,
15, Market Street,
Manchester.
THOMAS (L.S.) WATSON.