AN IMPROVED SPOOL FOR LOCK-STITCH SEWING MACHINES
Year: 1870

page_text: LETTERS PATENT to William John Blinkhorn, of St. Helens, in the
County of Lancaster, Soap and Patent Candle Manufacturer, for
the Invention of "AN IMPROVED SPOOL FOR LOCK-STITCH SEWING
MACHINES."
PROVISIONAL SPECIFICATION left by the said William John Blink-
horn at the Office of the Commissioners of Patents, with his Petition,
on the 28th April 1870.
A
I, WILLIAM JOHN BLINKHORN, of St. Helens, in the County of
5 Lancaster, Soap and Patent Candle Manufacturer, do hereby declare the
nature of the said Invention for "AN IMPROVED SPOOL FOR LOCK-STITCH
SEWING MACHINES," to be as follows :-

page_text: thereof with apertures therethrough or notches therein, or I form the
said sides of pieces with blank spaces between, or otherwise form
such sides with apertures, blank spaces, or notches, for the purpose of
securing the following advantages :-(a), rendering the thread inside
the spool visible when the spool is placed in position in the machine;
(b), facilitating the finding of the broken end of a thread inside the
spool, and (c), when necessary easily and effectually clearing the spool
from thread.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said William John Blinkhorn in the Great Seal Patent
Office on the 27th October 1870.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, WILLIAM
JOHN BLINKHORN, of St. Helens, in the County of Lancaster, Soap and
Patent Candle Manufacturer, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-eighth day of April, in the year
of our Lord One thousand eight hundred and seventy, in the thirty-
third year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto me, the said Willian John Blinkhorn, Her special
licence that I, the said William John Blinkhorn, my executors, adminis-
trators, and assigns, or such others as I, the said William John
Blinkhorn, my 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 "AN IMPROVED SPOOL FOR LOCK-STITCH SEWING MACHINES," upon the
condition (amongst others) that I, the said William John Blinkhorn,
my executors or administrators, by an instrument in writing under
my, or their, or one of their hands and seals, 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 months next and
immediately after the date of the said Letters Patent.

page_text: NOW KNOW YE, that I, the said William John Blinkhorn, do
hereby declare the nature of my said Invention, and in what manner the
same is to be performed, to be particularly described and ascertained in
and by the following statement, reference being had to the Sheet of
Drawings which accompanies this Specification:-
I construct a circular flat spool suited to the well-known Wheeler and
Wilson lock-stitch, and other sewing machines in which a spool is
employed, by forming in one or both of the dished sides thereof one or
more apertures or slots therethrough or notches therein, or I form the
said sides of separate pieces, leaving blank spaces or interstices between,
by which construction I secure the following advantages:-(a), ren-
dering the thread inside the spool visible through the said apertures or
slots when the spool is placed in position in the machine, thereby
shewing the amount and quality of thread on the spool, and making
the matching of the thread with the fabric easy of performance;
(b), facilitating the finding of the end of the thread when, as frequently
happens, it breaks inside the spool; and (c), allowing when necessary
the easy and effectual clearance of the spool from thread by inserting a
pen-knife or other suitable instrument through the apertures, slots, or
interstices and cutting through all the coils of the thread at one or more
places.
And in order that my Invention may be the more casily understood
and readily carried into effect, I will proceed to describe the Drawing

page_text: what I claim is the making or leaving apertures, slots, notches, or
interstices in the side or sides of a spool for sewing machines in the
manner and for the purpose herein-before described and set forth.
In witness whereof, I, the said William John Blinkhorn, have
hereunto set my hand and seal, this Twenty-sixth day of 1
October, in the year of our Lord One thousand eight hundred and
seventy.
WILLIAM JOHN BLINKHORN. (L.S.)
Witness,
WALTER F. CLARE,
Patent Agent,
23, Southampton Buildings,
London.