Improvements in or relating to the Application of Tension to Threads and the like.
Year: 1894

page_text: Date of Application, 7th Sept., 1894
Complete Specification Left, 18th Dec., 1894-Accepted, 11th May, 1895
PROVISIONAL SPECIFICATION.
Improvements in or relating to the Application of Tension to
Threads and the like.
A communication from FREDERICK HERBERT BISHOP, of 226, Devonshire Street,
Boston, State of Massachusetts, United States of America, Engineer.
I ALFRED JULIUS BOULT of 323 High Holborn, in the County of Middlesex,
Chartered Patent Agent, do hereby declare, the nature of this invention to be as
follows:-
In this tension device the thread or the like to which the tension is to be applied
is carried transversely across a series of parallel bars or teeth arranged like the
teeth of a comb and another series of bars or teeth arranged alternately with the
first is brought to bear upon the thread so as to carry it to a greater or less extent
between the teeth of the first series, the said extent depending upon a spring
weight screw or equivalent adjustable in degree and regulating the pressure of the
second series of teeth upon the thread. Thus in operation the thread passes in a
tortuous course first over a tooth of one series, second, over a tooth of the next
series and then over a tooth of the first and so on.
The degree of tension applied to the thread inay be regulated in two ways.
First, by varying the amount of the weight or tension of the spring that causes
one series of teeth to press down the thread between the other series of teeth, or
the extent to which the teeth of one set pass beyond those of the other set.
Second by arranging the thread so as to be in contact with a greater or less
number of teeth. Thus a very strong thread will be carried between all the teeth
of the two sets while a weak thread easily broken will be carried over only a
portion of the teeth of each set.
By this means the finest and most delicate threads of wool, silk cotton or other
material may have such tension applied as is necessary to permit the said threads
to be properly fed to any machine in which they are to be used while the same
tension device may be employed for regulating the tension upon very thick or
heavy threads or cords or wire.
One series of teeth may be fixed and the other movable so as to be carried
between the teeth of the first or both series may be movable so that each series is
brought in contact with one side of the thread etc., a spring or weight being applied
suitable to carry each series towards the thread which thus passes alternately over
the teeth of each.
The two series of teeth may be arranged in various ways and may be of any
suitable size or material preferably they are rounded at the parts where the thread
passes over the same.
Dated this 7th day of September 1894.
Y
W. P. THOMPSON & DOULI,
Agents for the Applicant.

page_text: improvements in or relating to the Application of Tension to
Threads and the like.
A communication from FREDERICK HERBERT BISHOP, of 226, Devonshire Street,
Bostor, Suffolk County, Massachusetts, United States of America, Engineer.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, 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:-
In this tension device the thread or the like to which the tension is to be applied
is carried transversely across a series of parallel bars or teeth arranged like the
teeth of a comb and another series of bars or teeth arranged alternately with the
first is brought to bear upon the thread so as to carry it to a greater or less extent
between the teeth of the first series, the said extent depending upon a spring
weight screw or equivalent adjustable in degree and regulating the pressure of the
second series of teeth upon the thread. Thus in operation the thread passes in a
tortuous course first over a tooth of one series, second, over a tooth of the next
series and then over a tooth of the first and so on.
The degree of tension applied to the thread may be regulated in two ways.
First, by varying the amount of the weight or tension of the spring that causes
one series of teeth to press down the thread between the other series of teeth, or
the extent to which the teeth of one set pass beyond those of the other set.
Second, by arranging the thread so as to be in contact with a greater or less
number of teeth. Thus a very strong thread will be carried between all the teeth
of the two sets while a weak thread easily broken will be carried over only a
portion of the teeth of each set.
By this means the finest and most delicate threads of wool, silk, cotton or other
material may have such tension applied as is necessary to permit the said threads
to be properly fed to any machine in which they are to be used while the same
tension device may be employed for regulating the tension upon very thick or
heavy threads or cords or wire.
In order that this invention may be clearly understood I will now proceed to describe
the same with reference by way of example to the accompanying drawings, wherein
Figure 1 is a front elevation, and Figure 2 a side elevation, of one construction of
tension device according to this invention; in it one series f of fingers is carried by a
rock shaft 6 from which the fingers extend in the shape of pins and the other fingers d
consist of cross bars bent to form notches 5, to receive the thread. When the shaft
is rocked in the direction of its arrow, Fig. 2, the fingers f are carried across the
line of thread in the notches 5, and will deflect the thread more or less from a
straight course, the friction increasing with the extent to which the thread is
deflected. A spiral spring 9 is secured at its inner end in a notch at the inner end
of the shaft 6, and its outer end projects into a hole in a knob 8, the tapering
shank 7 of which is hollow to receive the end of the shaft 6, and fits a tapering
opening in the frame A', which is arranged upon the machine in any suitable
position, and is shaped as shown or otherwise to enable it to be easily received on
any suitable support. A³ is merely a projection from the frame A', slotted to
lighten it. By turning the knob 8 the spring may be put under more or less
tension to vary the tension upon the thread, and this may be further varied by
passing the thread between a greater or less number of the intersecting fingers.
Both series of teeth or fingers may be movable so that each series is brought in
contact with one side of the thread, a spring or weight being applied suitable to

page_text: carry each series towards the thread which thus passes alternately over the teeth
of each.
The two series of teeth may be arranged in various ways and may be of any
suitable size or material preferably they are rounded at the parts where the thread
passes over the same.
Having now particularly described and ascertained the nature of the said inven-
tion, as communicated to me by my foreign correspondent, and in what manner the
same is to be performed I declare that what I claim is :--
1. Applying tension to thread by means of fingers which when caused to inter-
calate force the thread into a more or less tortuous course about them according to
the amount of tension required substantially as described.
2. In a tension-device for thread or the like the combination with intercalating
teeth or fingers some fixed and some pivoted or otherwise movable or all movable
of means to press the movable teeth or fingers with the desired degree of force
upon the thread or the like passed through the device substantially as and for the
purpose described.
3. The construction and arrangement of parts constituting the complete tension
device substantially as hereinbefore described and illustrated in the accompanying
drawings.
Dated this 18th day of December 1894.
W. P. THOMPSON AND BOULT & WADE,
Agents for the Applicant.