IMPROVEMENTS IN MACHINERY FOR SPINNING AND DOUBLING
Year: 1869

page_text: LETTERS PATENT to Peter McGregor, of the Falcon Works, in the
City of Manchester, in the County of Lancaster, Machine Maker,
for the Invention of "IMPROVEMENTS IN MACHINERY FOR SPINNING AND
DOUBLING."
Sealed the 2nd November 1869, and dated the 19th May 1869.
PROVISIONAL SPECIFICATION left by the said Peter McGregor at
the Office of the Commissioners of Patents, with his Petition, on
the 19th May 1869.
I, PETER MCGREGOR, of the Falcon Works, in the City of Manchester,
in the County of Lancaster, Machine Maker, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN MACHINERY FOR SPINNING
AND DOUBLING," to be as follows:-
My Invention is applicable to the machines for spinning and doubling
known as the ring and traveller throstle frames, and it consists in certain
improved modes of constructing the copping or ring rail of such frames.
It has heretofore been customary to make these rails of cast iron with
a flat top and with two side ribs to increase their strength, the space
[Price 8d.]

page_text: between which forms a receptacle and collects dirt and dust, and when
an end of yarn or thread breaks, the loose end being thrown by centri-
fugal force against the inside of the ribs becomes soiled and is liable
also to soil the adjacent bobbins. In order to remove these objections I
propose to make the copping or ring rails of cast iron, wrought iron,
steel, or cast malleable iron or steel without ribs; also to make the
copping or ring rails of any form or material the thickness of which will
not project either above or below the edge of the ring. By this
improvement in the construction of the copping or ring rails when an
end breaks the loose end is at liberty to fly off centrifugally without
coming in contact with any portion of the rail and therefore the yarn or
thread is not liable to be soiled as heretofore, the peculiar form of the
rail also affords great facility in cleaning.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Peter McGregor in the Great Seal Patent Office
on the 18th November 1869.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, PETER
M'GREGOR, of the Falcon Works, in the City of Manchester, in the
County of Lancaster, Machine Maker, send greeeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Nineteenth day of May, in the year
of our Lord One thousand eight hundred and sixty-nine, in the thirty-
second year of Her reign, did, for Herself, Her heirs and successors,
give and grant unto me, the said Peter McGregor, Her special licence
that I, the said Peter McGregor, my executors, administrators, and
assigns, or such others as 1, the said Peter McGregor, 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 "IMPROVEMENTS IN
MACHINERY FOR SPINNING AND DOUBLING," upon the condition (amongst
others) that I, the said Peter McGregor, 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

page_text: 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
l'atent.
NOW KNOW YE, that I, the said Peter McGregor, 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 (that is to say) :-
My Invention is applicable to the machines for spinning and doubling
known as the ring and traveller throstle frames, and it consists in certain
improved modes of constructing the copping or ring rails of such frames.
It has heretofore been customary to make these rails of cast iron with
a flat top and with two side ribs to increase their strength, the space
between which forms a receptacle and collects dirt and dust, and when
an end of yarn or thread breaks the loose end being thrown by centri-.
fugal force against the inside of the ribs becomes soiled and is liable
also to soil the adjacent bobbins. In order to remove these objections I
propose to make the copping or ring rails of wrought iron, steel, or cast
malleable iron or steel of any form the thickness of which will not
project either above or below the edges of the ring. By this improve-
ment in the construction of the copping or ring rails when an end
breaks the loose end is at liberty to fly off centrifugally without coming
in contact with any portion of the rail, and therefore the yarn or thread
is not liable to be soiled by the dirt on the rail as heretofore, the peculiar
form of the rail also affords great facility in cleaning.
And in order that my Invention may be fully understood will"
proceed to describe the accompanying Sheet of Drawings, in which
Figure 1 represents a section, and Figure 2 a plan of a copping or ring
rail constructed according to my improvements. This rail consists of a
plain flat bar of wrought iron, the four surfaces of which are planed,
ground, or otherwise polished so that they may be casily cleaned and
kept free from dust. The rings for the travellers are secured to the rail
by set screws in the ordinary manner. The lower edge of the ring
projects below the rail, as shewn in Figure 1, consequently when an end
breaks, and the centrifugal force causes the end to fly off horizontally, it
cannot come in contact with any dirt or flyings adhering to the rail.
The improved ring rails are supported and moved up and down in the
usual manner.

page_text: Figure 3 represents a modification of my Invention suitable for
stronger copping or ring rails; in this case the hole in which the ring
is fixed is recessed below to allow room for the traveller to revolve.
Having thus stated the nature of my Invention, and described two
modes of carrying the same into operation, I declare that I claim the
improved modes of constructing the copping or ring rails of ring and
traveller throstles, as shewn and described.
In witness whereof, I, the said Peter McGregor, have hereto set my
hand and seal, this Seventeenth day of November. One thousand
eight hundred and sixty-nine.
PETER MCGREGOR. (1..s.)