IMPROVEMENTS IN MACHINERY FOR PREPARING FLAX HEMP JUTE AND OTHER FIBROUS SUBSTANCES
Year: 1884

page_text: We JAMES BARBOUR-Machinist ABRAM COMBE-Machinist and JAMES GAMBLE-
Sheet Metal Worker all of Falls Foundry Belfast do hereby declare the nature
of said invention for IMPROVEMENTS IN MACHINERY FOR PREPARING FLAX HEMP
JUTE AND OTHER FIBROUS SUBSTANCES to be as follows:-
These improvements consist of a peculiar form of continuous sheet of gill bars
and a novel method of actuating and guiding same whereby the ordinary screws
and chains are dispensed with, this form of continuous sheet of gill bars and means
of actuating and controlling same being especially advantageous for drawing
frames and for drawing heads for cards where a short draft and consequent high
speed of gill bars is necessary.
The gill bars are actuated by toothed wheels into which they gear during their
ascent and descent and are carried forward from one driving wheel to the other by
the contact of the gill bars with each other.
To guide or control the angle at which the gill pins enter and leave the fibrous
material guides of a peculiar form are used which act upon the twisted ends of
the gill bars.
The ends of the gill bars are of a rectangular section and are twisted into a
screw like form and these parts of the gill bars during their contact with the
driving wheels pass in between fixed curved wedge like guides which cause
the gill pins to enter and leave the material being drawn through them at right
angles or nearly so.
By these means a continuous sheet of gill bars is obtained which can be driven
at a high velocity without risk of derangement and a closer pitch of gill bars can
be made than is obtainable when connecting chains are used.
NEWTON & SON,
Agents for the Applicants.

page_text: We JAMES BARBOUR Machinist ABRAM COMBE Machinist and JAMES GAMBLE
Sheet Metal Worker all of Falls Foundry Belfast do hereby declare the nature
of our invention for IMPROVEMENTS IN MACHINERY FOR PREPARING HEMP FLAX
JUTE AND OTHER FIBROUS SUBSTANCES 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 a peculiar form of continuous sheet of gill bars and a
novel method of actuating and guiding the same whereby the ordinary propelling
screws or chains are dispensed with.
This form of continuous sheet of gill bars and the means employed for actuating
and controlling the same is clearly illustrated in the drawing herewith in which
the same letters and figures of reference always apply to the same or like parts.
The gill bars (a) are actuated by toothed wheels (d d¹) into which they geer
during their ascent and descent and are carried forward in slides (e e¹) from one
driving wheel (d) to the other (d') by the contact of the gill bars (a) with
each other.
The gill bars (a) have projecting collars or snugs (a³) at various places in their
length which form the points of contact.
In order that the angle may be controlled at which the gill pins (a¹) enter and
leave the fibrous material one or both ends (a) of the gill bars (a) or any convenient
portion or portions of their length are made of a flat oval or rectangular section
or shape and are more or less twisted, and guides (c c¹) of a peculiar form act
progressively along the twisted portion or portions (a²) and according to the part
of the twisted portion or portions (a) with which the guides (c c¹) are in contact
the gill bar (a) is turned on its axis so that the bodies of the gill bars (a) and the
pins (a¹) can be controlled in or into any desired angle at any part of their progress
and the pins (a) can be made to enter and leave the material being drawn through
them at right angles to the passing fibres or nearly so as required.
Figure 1 is a sectional view of a sheet of gill bars (a) shewing the various
positions which the pins (a¹) take when entering and leaving the material during
its passage from the back or feeding rollers (b) to the front or drawing rollers (6¹).
Figures 2. 3. 4. 5. 6 and 7 are detached views shewing the form of the guides (c c¹)
which act upon the twisted portions (a) of the gill bars (a), the twisted portions (a*)
of the gill bars (a) may be more or less twisted as shewn in figures 8. 9. 10 and 11,
figures 8 and 9 shewing the gill bars (a) with one form of twist (a) namely with
half a twist given to each end (a) and in this case the guides (c. c¹) act at each
end (a) of the gill bars (a) both at their ascent and descent. Figures 10 and 11
shew the ends (a) of the gill bars (a) with only one quarter twist given to them
in this case the guides (c c¹) act upon one end of the gill bars (a) during their
ascent and upon the other during their descent.
Figure 11 is a sectional back view of the sheet of gill bars (a) and shews the
guides (oc) in position and in contact with the twisted ends (a²) of the gill
bars (a) at the top and bottom. Fig 12 is a sectional view of the front and back
portions of a sheet of gill bars (a) in which the gill bars (a) are shewn in their
usual position.

page_text: By these means a continuous sheet of gill bars is obtained which can be driven
at a high velocity without risk of derangement and a closer pitch of gill bars
can be made as shewn in Figure 1 than is obtainable when connecting chains
are used.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
Constructing gill bars to be used in continuous sheets and operating the same in
the manner and for the purpose set forth.