Improvements in Holders for Hackling Machines.
Year: 1897

page_text: Date of Application, 4th Aug., 1897
Complete Specification Left, 29th Apr., 1898-Accepted, 4th June, 1898
I, JOSHUA VALENTINE EVES, of Forth River Mill, Falls Road, Belfast, in the County
of Antrim, Ireland, Flax Spinner, do hereby declare the nature of this invention to be
as follows:-
The object of the invention is to provide for the flax machine holder being screwed
inuch tighter upon the flax than at present, to prevent fibres slipping out when being
hackled.
On the top leaf of the holder, I place a washer or its equivalent with a ball race or
groove for balls, and over this I place a loose washer with a corresponding ball race.
A cup with bevelled or dove-tailed edges holds the loose washer in place, when
the screw and nut are not in position.
The screw of the bottom leaf of the holder passes up through the other leaf in the
ordinary way, and through the washers applied thereto, and the nut screws down
upon the loose or anti-friction washer resting upon the balls, thereby lessening the
power required to tighten the holder upon the flax.
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
Improvements in Holders for Hackling Machines.
I, JOSHUA VALENTINE EVES, of Forth River Mill, Falls Road, Belfast, in the
County of Antrim, Ireland, Flax Spinner, 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 is designed to enable the flax holder of hackling machines being
screwed or clamped much more tightly upon the flax than at present to prevent the
fibres being drawn out whilst under operation without increasing the force or power
to be applied to the clamping screw for the purpose.
It consists essentially in constructing the flax holder with a ball race or groove and
a number of anti-friction balls on the top leaf surrounding the clamping screw
interposed between the leaf and the nut thereby lessening the power required to.
tighten the holder upon the flax.
It will be fully described with reference to the accompanying drawings.
Fig. 1. Front elevation of flax holder partly in section showing the balls in

page_text: Fig. 2. Longitudinal section of same.
Fig. 3. Sectional elevation of modified construction of nut and washer.
Fig. 4. Sectional elevation of another modification.
Fig. 5. Sectional elevation of further modification.
The top leaf or plate A, the bottom leaf or plate B, the screw C and the nut D of
the flax holder are of the ordinary construction.
On the top leaf A is fixed a washer or plate E provided with a groove or ball
race to receive a number of anti-friction balls F. Above the fixed washer and balls
is placed a second washer G also preferably provided with a groove g which is loose
and free to rotate upon the ring of balls F. The loose washer G is held in position
by a cap or ring H with bevelled or dovetailed edges, h; which fit over the inclined
or rounded edges of the loose washer and retain it in position when the nut is
removed. The cap or. ring H is affixed by rivets or screws to the leaf or plate A.
Instead of securing the washer carrying the ball race and balls to the holder the
same may be carried by or movably attached to the nut so that when the nut is
screwed down it rotates upon the balls thus reducing the friction. Or the washer
may be independent of both the plate and nut being formed in two parts with the
balls interposed between.
In Fig. 3 the washer E¹ is formed with a groove to receive the balls F as is also
preferably the under side of the nut D. The exterior edge of the washer and nut
may be of the shape shown or of other convenient shape to receive a ring or hoop K
of steel or other metal which is slipped over the edge and turned or spun over
to couple the two parts together. When the nut is screwed down the washer E¹
rests against the plate and the nut rotates upon the balls F.
In Fig. 4 another modification is shown for attaching or connecting the nut D
and washer E¹ when the balls have been placed between them.
A groove d¹ is
formed round the base of the nut and a pin L or a set-screw M is inserted therein
as shown, the pin running tangentially across the groove. Or a spring ring
or other equivalent device may be inserted in the groove between the two.
any other arrangement may be adopted to maintain the washer and nut together in
position.
Or
In Fig. 5.the washer is composed of two parts E¹ and D¹ connected together by
a ring or hoop K or by a pin or screw. such as shown in Fig. 4. The balls F are
placed in a race between the two parts of the washer. The washer is placed between
the plate A and the nut D and when the latter is screwed down upon it the part D¹
rotates with it reducing the friction to a minimum.
By this construction I obtain with the same strain or force applied upon the
wrench handle about four times the pressure on the holder plate consequent upon
the great reduction of friction as compared with the ordinary form of nut.
Nuts such as shown in Figs. 3 and 4 and washers such as shown in
Fig. 5 may be applied to any other purposes for which they are found
suitable.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed,. I declare that what I
claim is :-
1. A flax holder for hackling machines constructed with a washer and ring of anti-
friction balls interposed between the top plate and nut to reduce the force; or
stress necessary to securely clamp the fibres substantially as described.
2. In a flax holder for hackling machines the combination with the top
and bottom leaves or plates A and B, the screw C, and nut D of the grooved
washer E the balls F, the loose washer G rotating thereon and the cap or
ring H for holding the loose, washer in position substantially as: and for the purpose
described.
3. A flax holder for hackling machines. constructed and arranged with anti-
friction. or ball washer substantially as and for, the purpose described and
shown..

page_text: 4. A nut for tightening or clamping the leaves of flax holders constructed with
a loose washer connected thereto with balls interposed between the washer and the
nut substantially as described.
5. A washer for use in tightening or clamping the leaves of flax holders constructed
of two parts connected together by a hoop or other device with balls interposed
between them substantially as described.
Dated this 40th day of April.
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.