Improvements in Roving-frames for Treating Flax, Hemp, and similar Fibres.
Year: 1885

page_text: PROVISIONAL SPECIFICATION.
"
Improvements in Roving-frames for Treating Flax, Hemp, and
similar Fibres.
I, THOMPSON CRAISTER, of 36 Crimbles Street, Leeds, in the County of York,
Foreman Mechanist, do hereby declare the nature of my invention for IMPROVE-
MENTS IN ROVING-FRAMES FOR TREATING FLAX, HEMP, AND SIMILAR FIBRES, to
be as follows:-
This invention is intended to avoid or lessen the "tug" or "pluck" on the
rove 'when in process of coiling on the bobbin.
"
In place of using a single spur wheel for the "Jack in the box," or differential
wheel, use a double wheel with double pinions so geared that the tooth of one
wheel is in gear with the space in its pinion at the moment when the space in the
second wheel is filled by the tooth of its pinion-This enables me to employ wheels
having, practically, twice the number of teeth, without increasing the diameter of
the pitch line, and without weakening the tooth.
I further prefer, instead of making the teeth of the wheels parallel to the axis,
to arrange them on a slant; and, in order to meet and balance the end thrust on
the axis, arising from the use of a slanting tooth, I further arrange that the slant
given to the teeth of one wheel shall be in the opposite direction to the slant of
the teeth of the other.
D
WILLIAM SNOWDON,
Agent for the Applicant,
Beckett's Bank Chambers,
Leeds, Yorkshire.

page_text: Improvements in Roving-frames for Treating Flax, Hemp, and
similar Fibres.
I, THOMPSON CRAISTER, of 36 Crimbles Street, Leeds, in the County of York,
Foreman Mechanist, do hereby declare the nature of my invention for IMPROVE-
MENTS IN ROVING-FRAMES FOR TREATING FLAX, HEMP, & SIMILAR FIBRES, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement:—
"
"
This invention is intended to avoid or lessen the "tug" or pluck" on the
rove "when in process of coiling on the bobbin.
In place of using a single spur wheel for the "Jack in the box" or differential
wheel, I use a double wheel with double pinions so geared that the tooth of one
wheel is in gear with the space in its pinion at the moment when the space in the
second wheel is filled by the tooth of its pinion. This enables me to employ wheels
having, practically, twice the number of teeth, without increasing the diameter of
the pitch line, & without weakening the tooth.
I further prefer, instead of making the teeth of the wheels parallel to the axis,
to arrange them on a slant, & in order to meet & balance the end. thrust on the
axis, arising from the use of a slanting tooth, I further arrange that the slant given
to the teeth of one wheel shall be in the opposite direction to the slant of the teeth
of the other.
In order the more fully to explain the mode in which I carry out my invention
I have annexed a drawing on which Fig. 1. is a front elevation, & Fig. 2 a side
elevation, partly in section. The same letters refer to the same parts in all
the Figs.
In Fig. 2. A¹ & A" represent the double wheel, which takes the place of the single
one, carrying the "Jack in the box" or differential motion-the teeth on these
two wheels & their pinions being arranged to "hit and miss"-tooth & space-as
already described. B & B are the two pinions (fixed on the regulating shaft C),
the arrangement of the teeth being shown in section in Fig. 2.
I further arrange the wheels-where further smoothness in the gearing is desired,
in addition to the "hit & miss" arrangement, with the teeth on the slant, as
shown in part-in Fig. 3-the slant on the one wheel being in an opposite
direction to that on the other, to meet and balanco any end thrust.
The remainder of the "Jack in the box gearing is the same as usually
arranged-viz:-The double wheel A'-A"-carries the bevel wheels D¹ Du
gearing with the bevel wheel E, on the driving shaft F, & goaring also with the bevel
wheel G, fixed on the socket H; on this socket is also fixed the spur wheel 'I from
which the varied motion is transmitted through suitable gearing-not shown-to
the bobbin shaft.
Having now particularly described & ascertained the nature of my said inven-
tion, & in what manner the same is to be performed, I declare that what
I claim is
1. In a Roving-frame for treating flax, hemp, & similar fibres the combination of
a “Jack in the box" motion mounted on a double wheel having double pinions,

page_text: with teeth arranged to "hit & miss" one with the other, with the object & for
the purpose set forth, substantially as described & shown on the drawing.
2. In a Roving-frame for treating flax, hemp, & similar fibres, the combination
as claimed above whether the teeth are arranged parallel to the axis or on slants
arranged to balance one anothers end thrusts, with the object & for the purpose
set forth, substantially as described & shown on the drawing.
3. In claiming the combination of the "Jack in the box" mounted in a wheel
having double rows of teeth I wish it to be understood that I claim the combina-
tion with the said motion of two or more wheels or rows of teeth, the teeth in each
row "hitting & missing" those in the adjacent rows.
WILLIAM SNOWDON,
(Agent for the Applicant),
Beckett's Bank Chambers,
Leeds, Yorkshire,