and Preparing Fibrous Materials.
Year: 1885

page_text: and Preparing Fibrous Materials.
"
.I, JOHN HARDY of New Bond Street Halifax, Yorkshire, Card Maker do
hereby declare the nature of my invention for "IMPROVEMENTS IN "GARNETT'
OR SAW TEETH EMPLOYED IN OPENING AND PREPARING FIBROUS MATERIALS," to
be as follows:-
My Invention has reference to saw teeth or what are known as "Garnett" teeth,
and which are made from a continuous length of flat wire.
This continuous strip of saw teeth has been inserted into a spiral groove cut in
the periphery of a metal roller, such roller being largely employed in opening and
preparing waste and other fibre.
My Invention consists in forming the wire composing such saw teeth of 1 shape,
the teeth thereof being afterwards cut in the vertical part.
By forming saw teeth in a wire of this shape they can be wound upon the
surface of a plain roller instead of in a groove, as the base or horizontal part forms
a foundation for keeping the teeth erect. If necessary I may wind a narrow
length of wire between the intervening space of the saw teeth, so as to hold the
teeth down and keep them firm.
By this means the cutting of a spiral groove in a roller for the insertion of the
"Garnett" teeth is not now necessary, although if required my form of toothed
wire may be inserted in spiral grooves.
TASKER & CROSSLEY,
Patent Agents,
1, Commercial Street, Halifax,
Agents for the Applicant.

page_text: and Preparing Fibrous Materials.
I, JOHN HARDY, of New Bond Street, Halifax, Yorkshire, Card Maker do hereby
declare the nature of my invention for "IMPROVEMENTS IN " GARNETT" OR SAW
TEETH EMPLOYED IN OPENING AND PREPARING FIBROUS MATERIALS," and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement :—
My invention has reference to saw teeth or what are known as "Garnett" teeth
and which are made from a continuous length of flat wire. This continuous
strip of saw teeth has been inserted into a spiral groove cut in the periphery of a
metal roller, such rollers being largely employed in opening and preparing waste
and other fibre.
My invention consists in forming the wire composing such saw teeth of 1 shape,
the teeth thereof being afterwards cut in the vertical part.
By forming saw teeth in a wire of this shape they can be wound upon the
surface of a plain roller, instead of in a groove, as the base or horizontal part forms
a foundation for keeping the teeth erect.
Such being the nature and object of my invention, I will now proceed to describe
the same more fully, and for that purpose have annexed the accompanying sheet
of drawings wherein Fig. 1 is sectional elevation of a "Garnett" tooth made
according to my invention, which it will be observed is composed of a flat strip of
metal, having projecting saw teeth. In making the metal strip it is either drawn
or rolled into a 1 shape, the teeth therein being afterwards cut in the vertical part
by any well known process.
After the strip is cut and made with teeth as shewn in Fig. 1 it is wrapped side
by side onto the periphery of a roller employed in opening and preparing fibre,
each end of the serrated strip being made secure to the periphery of the said roller
by wires as shewn at a in Fig. 2, or the said strip may be soldered to the roller at
different parts along its length, or instead of either of these methods, I may wind
a narrow length of wire b see- Fig. 3, between the intervening spaces of the saw
teeth so as to hold the teeth down and keep them firm, in this case each end of the
wire b would have to be secured to the roller.
Instead of the flat metal strip being drawn or rolled with only one vertical
part as seen in Fig. 1, the said metal strip may be made with two or more vertical
parts as seen at Fig. 4, in this case the vertical part and horizontal part may be
composed of the same metal and drawn or rolled to that shape; or they may be
drawn singly as seen in Fig. 1, and then soldered onto a flat metal strip, but this
may be done as found most convenient. In any case the teeth such as are herein
shewn and described are fixed onto the periphery of a roller so as to render the
cutting of spiral grooves for the insertion of "Garnett" teeth unnecessary.

page_text: Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is
The making of "Garnett" saw teeth from metal strips comprising a horizontal
base and vertical teeth for fixing onto the periphery of a roller in manner
substantially as herein set forth and shewn in the accompanying drawings.
TASKER & CROSSLEY,
Commercial Street, Halifax,
Agents for the Applicant.