Improvements in and relating to Bobbins or Spools for Spinning Machines.
Year: 1888

page_text: Date of Application, 6th Mar., 1888
Specification Accepted, 6th Apr., 1888
Improvements in and relating to Bobbins or Spools for Spinning
Machines.
We, GEORGE OTIS BOYNTON and FRANK COOPER JOHNSON, both of 36 Beach
Street in Boston, State of Massachusetts United States of America 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 :―
Our invention comprises a method of providing protection for one of both ends of
a bobbin or spool for spinning machines, consisting of electrically depositing on one
or both ends of such bobbins or spools any suitable metal all substantially as herein-
after fully described
Our said invention also comprises a bobbin or spool for spinning machines having
one or both ends covered or protected with metal electrically deposited thereon, all
substantially as hereinafter fully described.
The accompanying drawing illustrates the present invention, as applied to several
forms of bobbins and a spool for spinning machines.
Figures 1, 3 and 4 represent in side view several forms of bobbin and
Figure 2 a spool for spinning machines.
Figure 5 is a detail central longitudinal section of the upper end of the bobbin
shown in figure 1, and
Figures 6 and 7, are detail central longitudinal sections of the lower ends of the
spool and bobbin shown in figures 2 and 3 respectively.
Figures 8 and 9 are detail central longitudinal sections of the upper and lower ends
respectively of the bobbin shown in figure 4.
Figure 10 a cross section on line 10, 10, figure 5.
Figure 11, is a cross section hereinafter referred to.
Figures 5 to 11 inclusive are drawn to an enlarged scale.
In the drawing, A represents a bobbin for use in spinning wool, B and C, bobbins
for use in spinning cotton, and D a spool for spinning silk, all made of wood and
constructed and arranged for operation in a spinning machine as usual and needing
no particular description herein, except so far as relates to the present invention.

page_text: :
E represents a ring, thimble, or sleeve of metal, preferably of copper, applied to the
ends of the bobbins and spools as shown.
The bobbin A, figures 1 and 5, is made of the usual desired size and shape, the upper
end a where the metal is to be applied is first turned off as at b, reducing its diameter
at such end as shown for the deposit of the metal E thereon which is flush with the
surface d, and a short piece of wire f, of any suitable metal that is a good conductor
of electricity, is then inserted in the wood projecting therefrom a short distance, and
then the place so turned down or reduced is coated or covered with a coating or
slight thickness g of any suitable metallic varnish, for instance a varnish made of
powdered bronze mixed with any suitable varnish, preferably an oil varnish, the
bronze or metallic portion of the varnish being a good conductor of electricity.
To the wire is attached an electric wire, in any suitable manner which electric
wire is connected to one pole of an electric battery and a coating of wax or paraffin
is applied to that portion of the wood that is above the place where the metallic
varnish is applied to prevent the acid of the solution from acting upon or injuring the
wood of the bobbin.
The end of the bobbin so prepared is immersed in a solution properly prepared for
the depositing of metal by electricity and having immersed therein the metal (which
is preferably copper) to be applied to the bobbin which metal is connected by a
suitable wire to the other pole of the battery all as usual in the depositing of metal by
electricity, the bobbin being supported in the solution by the electric wire attached
thereto, or in any suitable manner.
When the metal is deposited on the bobbin to the thickness desired the bobbin is
removed from the solution and disconnected from the electric wire, the small wire f,
then cut off to the surface of the deposited metal the bobbin properly cleaned and
then the metal portion E, trued up in a lathe to make it flush with the bobbin as
shown, or as desired.
The spool D shown in Figure 2, and Figure 6, in detail has one of its flanges F
prepared and covered with the copper in a similar manner to the end a of the bobbin A,
the flange being turned or reduced to make it of the same size when covered as its
other flange.
The bobbin B shown in figures 3 and 7 has its lower end prepared and covered or
protected with metal in a similar manner to the end a of the bobbin A.
The bobbin shown in figure 4, has its upper end has shown in figure 8, prepared
and covered or protected with copper like the upper end a of the bobbin A, in
figures 1 and 5, and its lower end m, as shown in figure 9, prepared and covered
or protected with copper like the lower end of the bobbin shown in figures 3
and 7.
To prevent accidental detachment of the metal E, from the ends of the bobbins and
spool flange if it should become looose from shrinkage of the wood or from any cause
it is preferable in preparing the ends to turn or cut a circumferential groove in the
outer surface of the bobbins and spool flange as shown at n, in the several figures,
whereby the metal will be deposited in the grooves, and therefore ensure its close and
better attachment; the grooves need only extend part way around and instead of
grooves any suitable depressions or serrations can be used.
In figure 11 the bobbin is shown as having longitudinal grooves p which grooves
can be long or short according to the extent of the metal thereon, which, when filled
with the deposited metal prevents its turning on the bobbin.
The wire serves also as a rivet and prevents detachment of the metal although
its special use is to give means of attaching the electric wire, for the necessary electric
current, but this can be done in other ways, for instance, by winding a wire over the
metallic varnish.
In lieu of copper any suitable metal can be used that can be deposited by electricity
and any suitable apparatus for depositing the metal by electricity can be used.
Covering or protecting a bobbin or spool for spinning machines with metal by
means of electricity substantially as herein described secures the metal closely and
firmly to the wood of which the bobbin is made and the metal prevents the wood from

page_text: splitting or cracking in use and when applied to its upper end it makes a smooth
finish whereby the silk or other threads are not retarded or interfered with in delivery
therefrom.
Having now particularly described and ascertained the nature of our said
invention, and in what manner the same is to be performed, we declare that what
we claim is.
First. The method of providing protection for one or both ends of a bobbin or
spool for spinning machines consisting of electrically depositing any suitable metal
thereon for the purpose specified.
Second. The method of providing protection for one or both ends of a bobbin or
spool for spinning machines consisting of electrically depositing any suitable metal
thereon and then finishing up the same for the purpose specified.
Third. The method of providing protection for one or both ends of a bobbin or
spool for spinning machines consisting of turning off or reducing the end of the
bobbin and the electrically depositing thereon at such end any suitable metal and then
finishing up the same substantially as and for the purpose specified.
Fourth. A bobbin or spool for spinning machines covered or protected on one or
both ends with copper or other metal electrically deposited thereon.
Dated this 6th day of March 1888.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.