Improvements in Weft-pirns.
Year: 1892

page_text: Date of Application, 1st Nov., 1892
Complete Specification Left, 1st Aug., 1893-Accepted, 16th Sept., 1893
PROVISIONAL SPECIFICATION.
Improvements in Weft-pirns.
I, NORMAN DIXON WALKER, of Steeton, near Keighley, in the County of
York, Bobbin Manufacturer, do hereby declare the nature of this invention to be.
as follows:-
"weft-
This invention relates to certain improvements in what are known as
pirns" and has for its object their better protection against wear and tear and
thereby increase the life of such "weft-pirns."
22
Hitherto protectors or metal bands have surrounded the head and tip of the
bobbin with a view of preventing the bobbin splitting when in use, the tendency of
the tongue of the shuttle being to split open the bobbin.
In my improvement I enlarge the hoop or band surrounding the head of the
bobbin and carry the same some distance in the direction of the tip of the bobbin,
and thus prevent the wearing away of the wood of which the bobbin is composed,
by frequent contact with the two clips or "ears" right and left of the tongue of
the shuttle or pin across the same used for the purpose of preventing the bobbin
slipping forward on the tongue of the shuttle.
I prepare the bobbin in the lathe for the reception of my hoop or band in the
following manner. The head of the bobbin is turned down for the reception of the
bottom of the hoop, and on the barrel immediately above the head of the bobbin I
form a recess. The hoop is forced over the edge of this recess, the barrel at that
point being left somewhat larger, and when so forced the edge of the recess is
compressed.
After the hoop or band is so passed over, the wood expands, and thus the hoop
remains firmly in its position without the aid of any pins for securing the same.
The hoop secured in the manner described, protects the bobbin from the wear and
tear incidental to the holders in the shuttle, and also prevents the splitting of the
bobbin by the tongue of the shuttle.
7
حيمم
box 1905
JOHN WAUGH,
A gent.
COMPLETE SPECIFICATION.
Improvements in Weft-pirns.
I, NORMAN DIXON WALKER of Steeton, Keighley in the County of York,
Bobbin Manufacturer, 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 :-
This invention relates to certain improvements in what are known as "weft
pirns" and has for its object, their better protection against wear and tear, and
thereby increases the life of such "weft pirns."
Hitherto protectors or metal bands have surrounded the head of the "weft
pirns" or bobbins, with a view of preventing splitting when in use, the tendency of
the shuttle tongue being to split open the bobbins.
In order that my invention may be fully understood, I will describe the same in
detail by making reference to the accompanying sheet of drawings in which
Fig. 1 represents a plan view of a loom shuttle having a "weft pirn" or bobbin
therein constructed according to my invention.
Fig. 2 shows a section of a portion of my improved "weft pirn" or bobbin and
Fig. 3 a similar view prior to the protecting hoop being placed thereon,

page_text: The loom shuttle indicated by the letter A is of the ordinary construction and
forms no part of my invention.
By my improvement I enlarge the hoop or band B surrounding the head C of
the weft pirn" or bobbin D and extend the same for some little distance on the
barrel of the "pirn" in the direction of the tip D', and thus prevent the wearing
away of the wood, of which the "weft piru" or bobbin is composed, by frequent
contact with the clips or ears E. E. used for the purpose of preventing the bobbin
or "weft pirn" slipping forward on the shuttle tongue in the direction of
arrow.
The head C of the "weft pirn" or bobbin D is turned in the lathe to a similar
contour as the protecting hoop or band B, and on the barrel immediately above the
head C is formed a recess G. The hoop B is placed in a die and forced over the
shoulder H of recess G, by which the enlarged portion of the barrel formed by
the shoulder H.is compressed, upon the hoep, B being forced over same, and when
the portion B is in the recess G, the wood of the barrel expands, thereby
securing the hoop in its position on the head and barrel without the aid of pins or
the like.
66
"
By securing hoops or bands B to the heads of "weft pirns" or bobbins in the
manner described the head and barrel of the same are protected from the wear and
tear incidental to the clips or ears EE preventing the said bobbins or "weft
pirns slipping forward on the tongue of the shuttle, and in addition preventing the
splitting of the same by the shuttle tongue.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
A bobbin or "weft pirn" D with which is combined a metal hoop or band B
secured on the head and barrel of the bobbin or "weft pirn" by the recess G and
shoulder H substantially in the manner shown and described.
Dated this 31st day of July 1893.
JOHN WAUGH,
Agent.