IMPROVEMENTS IN THE CONSTRUCTION OF ROWELS OR TOOTHED CYLINDERS FOR SELF-ACTING TEMPLES AND OTHER PURPOSES
Year: 1855

page_text: LETTERS PATENT to Joseph Hallam, of Sheffield, in the County of York,
Needle Manufacturer, and John Elce, of the City of Manchester,
Machinist, for the Invention of "IMPROVEMENTS IN THE CONSTRUCTION OF
ROWELS OR TOOTHED CYLINDERS FOR SELF-ACTING TEMPLES AND OTHER
PURPOSES."
Sealed the 30th October 1855, and dated the 11th May 1855.
PROVISIONAL SPECIFICATION left by the said Joseph Hallam and John
Elce at the Office of the Commissioners of Patents, with their Petition,
on the 11th May 1855.
We, JOSEPH HALLAM, of Sheffield, in the County of York, Needle Manu-
facturer, and JOHN ELCE, of the City of Manchester, Machinist, do hereby
declare the nature of the said Invention for "IMPROVEMENTS IN THE CONSTRUCTION
OF ROWELS OR TOOTHLL CYLINDERS FOR SELF-ACTING TEMPLES AND OTHER PURPOSES "
to be as follows:-
Our Inventio consists in fixing the teeth or pins of rowels or toothed
cylinders into semi-cylindrical or other shaped shells of brass or other metal,
and in afterwards soldering or otherwise fixing these shells on an arbor or
shaft. By means of this improved mode of constructing rowels or toothed
cylinders, the pins may be made of hard steel, thereby increasing their dura-
bility, and rendering them better suited for leaving the selvages of the fabric
when used for self-acting temples. These toothed cylinders may be applicable
to machines for cleaning and combing flax or other fibrous material.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Joseph Hallam and John Elce in the Great Seal Patent
Office on the 9th November 1855.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, JOSEPH
HALLAM, of Sheffield, in the County of York, Needle Manufacturer, and JOHN
ELCE, of the City of Manchester, Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Eleventh day of May, in the year of our Lord
One thousand eight hundred and fifty-five, in the eighteenth year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us,
the said Joseph Hallam and John Elce, Her special license that we, the said
Joseph Hallam and John Elce, our executors, administrators and assigns, or
such others as we, the said Joseph Hallam and John Elce, our executors,
administrators, and assigns, should at any time agree with, and no others,
from time to time and at all times thereafter during the term therein expressed,
should and lawfully might make, use, exercise, and vend, within the United
Kingdom of Great Britain and Ireland, the Channel Islands, and Isle of
Man, an Invention for "IMPROVEMENTS IN THE CONSTRUCTION OF ROWELS OB
TOOTHED CYLINDERS FOR SELF-ACTING TEMPLES AND OTHER PURPOSES," upon tho
condition (amongst others) that we, the said Joseph Hallam and John Elce,
by an instrument in writing under our hands and seals, or under the hand and
seal of either of us, should particularly describe and ascertain the nature of the
said Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar
mouths next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Joseph Hallam and John Elce, do
hereby declare the nature of our said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in and
by the following Specification thereof, reference being had to the accompany-
ing Drawing (that is to say) :-
The nature of our Invention consists in fixing the teeth or pins of rowels
or toothed cylinders into shells of brass or other metal, and in afterwards fixing
these shells on an arbor or shaft.
We have in the said Drawing given Figures for shewing how our Invention
may be carried into effect, similar parts in each of the views being marked
with similar letters of reference.
Figure 1 is a transverse section, and Figure 2 a longitudinal section, of a

page_text: rowel or toothed cylinder suitable for the self-acting temple of a loom. a, a,
are two semi-cylindrical shells, which we prefer to make of brass; one of the
shells is shewn detached in Figures 3 and 4. Small holes are drilled into these
shells for the pins b, b, which are introduced from the inner part of the shells,
and project the requisite distance from the circumference. When the pins
are all inserted, the two halves, forming the circular shell, are soldered or
otherwise fixed to the arbor or shaft c. By this improved mode of constructing
rowels or toothed cylinders, the pins may be made of hard steel, thereby
increasing their durability, and rendering them better suited for leaving the
selvages of the fabric when used for self-acting temples. In constructing
rowels according to this improved mode, the pins may be brought closer
together than in the ordinary mode of construction.
Toothed cylinders of larger diameters for cleaning and combing flax or other
fibrous material may be constructed on the same principle. It may be pre-
ferable in some cases to make the shells in more than two parts, and in other
cases the shell may be entire; these details depending upon the diameter and
length of the toothed cylinder required.
Having thus stated the nature of our Invention, and described the manner
of performing the same, we declare that we claim the improved mode of
constructing rowels or toothed cylinders described.
In witness whereof, I, the said John Elce, have hereunto set my hand
and seal, this Eighth day of November, in the year of our Lord One
thousand eight hundred and fifty-five.
Witness,
H. B. BARLOW,
Manchester.
JOHN ELCE. (LS.)