IMPROVEMENTS IN ATTACHMENTS TO SPOOLS FOR CUTTING AND HOLDING THE END OF THE THREAD
Year: 1884

page_text: I, JOHN LOUIS CHEWETT CRONYN, of Buffalo, in the County of Eric, and State
of New York, United States of America, Physician, do hereby declare the nature
of my Invention for IMPROVEMENTS IN ATTACHMENTS TO SPOOLS FOR CUTTING
AND HOLDING THE END OF THE THREAD, and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement:-
The objects of my Invention are to provide a combined thread cutter and
holder.
First: which may be applied to a spool in such a manner that the cutting blado
is entirely free from dangerous contact with the hand of the manipulator.
Second: which is adapted to be applied equally well to either end of the
spool, and
Third: which will permit the spool provided with the combined cutter and
holder, to be readily and freely used upon a sewing machine.
To these ends my Invention consists substantially of a thin metallic strip, having
either one or both of its sides provided with a cutting blade, and one of its ends
formed into a pointed shank at an angle to the cutting portion, for securing such
cutting portion in a position parallel with either end face of the spool.
For additional security in preventing the accidental cutting of the hand of the
manipulator, my Invention further consists in providing the end of the cutting
portion opposite to the securing shank with a blunt, rounded, or angular portion.
I will now proceed to describe the manner in which I propose to carry out my
Invention, it being understood that it is susceptible of certain modifications within
the limits of my Invention hereinbefore outlined.
In the Drawings:-
Figure 1, is a perspective view of a spool of thread with my improved cutter
and holder applied thereto.
Figure 2, is an end view of spool illustrating manner of holding thread.
Figure 3, is a similar view, illustrating manner of cutting thread.
Figure 4, is a perspective view of cutter and holder detached, and
Figure 5, is a section of Figure 4, taken in line x, x.
Referring to Drawings, a is a spool to which my improved cutter and holder is
to be attached, and b, is the thread wound thereon.
The cutter and holder clearly shown in Figure 4, consists essentially of the thin,
narrow portion c, and its shank d, at an angle thereto.
The portion c, has either one or both of its side edges formed with the cutting
blade c, which preferably extends from a point near the shank d, to or nearly to its
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page_text: other end. These blades as clearly shown in Figure 5, are preferably formed by
beveling or grinding away both the upper and lower surfaces of the strip c, although
it is apparent that beveling only one surface would suffice.
The cutter would operate with a blade on the inner side alone, as will be clearly
seen in .Figures 2 and 3, but by forming a blade on both sides of strip c, the
device is adapted to be secured to either end of the spool, as clearly apparent in
Figure 1.
The holding shank d, is provided with a tapering end d', for easy insertion into
the end of the spool.
This tapering portion preferably extends only part way up the shank, the
remaining shouldered portion d, being left as shown, to prevent accidental turning
of the device when it is driven into the spool.
The end e, of the strip c, opposite the shank d, is made blunt and rounded or
angular, so as to completely protect the manipulators hand.
The application of the device, just described, to the spool, and its operation is as
follows:-
-
The pointed shank d, d¹, is driven into the end of the spool in such a manner
that the body portion.c, will assume a position substantially as shown in the
Drawings so that the cutting edge c, (see Figure 3) will form an acute angle with
the tangent (shown in dotted lines in such Figure) drawn at the point of inter-
section of the cutting edge c¹, with the outer periphery of the spool. This position
enables the thread to be drawn against the blade at an acute angle, thus making
the cutting action more effective.
The outer blunt end e, is preferably located so that it projects slightly beyond
the edge of the spool, thus forming a shoulder, to catch the thread in the operation
of cutting the same..
The blade portion c, should rest against the end of the spool closely enough to
hold the thread securely when not in use, as illustrated in Figure 2, thus enabling
the device to be equally well employed as a thread holder.
It will be seen that with my improved cutter and holder, it is impossible to
injure the hand of the person holding the spool; that the device does not interfere
with the free use of the spool upon a sewing machine, and takes up very littlo
room when applied to the spool.
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
First. A combined thread cutter and holder, consisting substantially of a thin
metallic strip, having either one or both of its sides provided with a cutting edge
and one of its ends provided with pointed shank at an angle to the cutting portion,
to adapt it to be secured to a spool, substantially as shown and described.
Second. A combined thread cutter and holder consisting substantially of a thin
metallic strip, having either one or both of its sides provided with a cutting edge,
and one of its ends provided with a pointed shank, at an angle to the cutting
portion, to adapt it to be secured to a spool, its other end being bluntly formed,
substantially as shown and described.
Dated this 25th day of March 1984