IMPROVEMENTS IN THE MANUFACTURE OF 'CONDENSER.' BOBBINS
Year: 1878

page_text: LETTERS PATENT to Eli Whitwam, of Huddersfield, in the County of York,
Engineer, for the Invention of "IMPROVEMENTS IN THE MANUFACTURE OF
'CONDENSER.' BOBBINS."
Sealed the 25th April 1879, and dated the 28th October 1878.
PROVISIONAL SPECIFICATION left by the said Eli Whitwam at the Office
of the Commissioners of Patents on the 28th October 1878.
ELI WHITWAM, of Huddersfield, in the County of York, Engineer.
MENTS IN THE MANUFACTURE OF CONDENSER BOBBINS."
"IMPROVE-
This Invention has reference to that class of bobbin known as a "condenser
bobbin" and employed in woollen machinery, and which has hitherto been com-
posed of solid wood, having steel or other metal flanges.
To the use of bobbins so constructed there are many objections, such as the
metal flanges coming loose by the shrinking of the wood, and the constant breakage
of the wood through rough usage.
Now my Invention consists in making condenser bobbins entirely of metal, con-
sisting either of steel, wrought, cast, malleable iron, or other metal. The body or
barrel of the bobbin is made of thin metal tubing, and the ends or flanges are secured
thereto by either bolts, screws, or by soldering or brazing.
By this means condenser bobbins are of less weight, and the body or barrel is
less in diameter, consequently holding more material, and they are far more
durable than the present construction of bobbin.

page_text: Patent filed
SPECIFICATION-in-pursuance-of-the-conditions_of_the_Letters
by the said Eli Whitwam in the Great Seal Patent Office on the 28th April
1879.
ELI WHITWAM, of Huddersfield, in the County of York, Engineer. "IMPROVE-
MENTS IN THE MANUFACTURE OF CONDENSER' BOBBINS."
23
This Invention has reference to that class of bobbins known as "condenser
bobbins, and employed in woollen machinery, and which have hitherto been com-
posed of a-solid-wood barrel with steel or other metal flange
To bobbins so constructed there are many objections, such as the metal flanges
becoming loose in consequence of the shrinkage of the wood barrel and the frequent
breakage of the wood barrel, which results from carelessness or rough usage.
My Invention consists in making condenser bobbins entirely of metal, such as
steel, wrought, cast, or malleable iron, or other suitable metal. The body or barrel
of the bobbin is by preference made of thin inetal tubing, and the ends or flanges
are secured thereto by either bolts, screws, or by soldering or brazing.
In order that this Invention may be fully understood I have annexed the accom-
panying Sheet of Drawings, where Fig. 1 illustrates a bobbin constructed according
to my Invention, being partly in section and partly in elevation.
The barrel a is composed of steel or other metal tubing, having a collar or bush b
soldered or otherwise fastened into each end thereof; c is the ordinary metal flange,
which is held or secured in its place by means of the bolt d, which is screwed into
the bush b. The spindle or pege of the bolt d forms the axis of the bobbin.
In cases where large bobbins are required I prefer to construct them as shewn
in Fig. 2 of the accompanying Drawings. In this case I place a bolt f through the
barrel having a square formed at each end, which slightly projects beyond the end
of the barrel sufficient for the flange c to rest upon, and which is kept in its place
by the nut d. Fig. 3 is plan of the flange, shewing square hole, which fits on to
the end of the square of the bolt f. By constructing bobbins according to this
Invention the barrels can be made smaller in diameter than could be done when
composed of wood, consequently more yarn or thread can be placed thereon; the
bobbins are also much lighter and more durable.
In witness whereof, I, the said Eli Whitwam, have hereunto set my hand
and seal, this Twenty-fifth day of April, in the year of our Lord One
thousand eight hundred and seventy-nine.