AN IMPROVED TWINE OR STRING CUTTER FOR ATTACHMENT TO STRING BOXES OR TO COUNTERS OR OTHER ARTICLES
Year: 1884

page_text: I, JOHN DARLING, of Glasgow in the County of Lanark North Britain,
Engineer do hereby declare the nature of the said invention for "AN IMPROVED
TWINE OR STRING CUTTER FOR ATTACHMENT TO STRING BOXES OR TO COUNTERS
OR OTHER ARTICLES to be as follows:-
This Invention which relates to an improved twine or string cutter for attach-
ment to string boxes or to counters or other articles consists of a pair of blades
whoso edges meet at an angle and in a vertical plane or nearly so.
The two blades or cutters are provided with arms in the outer end of each of
which a slot is cut for attaching it to a wire ring or an equivalent holder in the
top of the string box or in other place or article to which the said cutter is or may
be attached. One of the blades has a second arm projecting from it in which an
elongated hole is formed to allow of the free movement therein of a screw or pin by
which the two blades are held together towards the centre of the cutter. A spring
presses against the under side of the blades whose compression keeps the cutting
edges open at an angle and when closed for cutting they are pressed against this
spring. The said spring is provided with a screw for adjusting its height from,
time to time according to the wear of the blades and the upper surfaces of the
blades are ground to an angle descending inwards so as to ensure the string or
twine to be cut always being directed to the cutting edges of the blades.
J. H. JOHNSON, DAY & JOHNSON,
Petitioner's Agents,
115, St. Vincent Street, Glasgow.

page_text: COMPLETE SPECIFICATION.
I, JOHN DARLING of Glasgow, in the County of Lanark, North Britain,
Engineer do hereby declare the nature of my 'said invention for AN IMPROVED
TWINE OR STRING CUTTER FOR ATTACHMENT TO STRING BOXES OR TO COUNTERS
OR OTHER ARTICLES and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement :—
*
My Invention, which relates to an improved Twine or String cutter for attach-
ment to string boxes or to counters or other articles, consists of a pair of blades
whose edges meet at an angle and in a vertical plane or nearly so.
The two blades or cutters are provided with arms in the outer end of each of
which a slot is cut for attaching it to a wire ring or an equivalent holder in the
top of the string box or in other place or article to which the said cutter is or may
be attached. One of the blades has a second arm projecting from it in which an
elongated hole is formed to allow of the free movement therein of a screw or pin.
by which the two blades are held together towards the centre of the cutter.
A spring presses against the under side of the blades whose compression keeps the
cutting edges open at an angle and when closed for cutting they are pressed against
this spring. The said spring is provided with a screw for adjusting its height from
time to time according to the wear of the blades and the upper surfaces of the
blades are ground to an angle descending inwards so as to ensure the string or
twine to be cut always being directed to the cutting edges of the blades.
In order that my said Invention may be most fully understood and readily
carried into effect, I will proceed to describe the drawings hereunto annexed.
Figure 1. represents in elevation a string box fitted with a Twine or String
cutter constructed according to my Invention.
Figures 2 and 3 represent the same respectively in plan and in part elevation
and in part vertical section.
Figures 4 and 5 represent detached portions of the same.
Figure 6 represents in part elevation and in part vertical section a string box
fitted with a modified arrangement of the adjustment of the Twine or String catter
constructed according to my Invention.
The two blades or cutters, a, and b are provided with the arms respectively
marked, and d. In the outer ends of these arms c, and d, the slots e, and f, are
cut as represented more particularly at Figures 4 and 5. These slots are formed
for the purpose of attaching the said blades or cutters to the wire rings 9, or equi-
valent holder provided in the top or cover h, of the string box i, or in other place
or article to which the said Twine or String cutter is or may be attached. The
blade or cutter a, has the second arm j, projecting from it, and in which arm there
is formed the elongated or slotted hole k, (Figure 4) to allow of the free movement
therein of the screw l, which is screwed into the hole m, (Figure 5) formed in the
blade or cutter b.-By means of this screw 1, the two blades or cutters a, and b, are
held together towards the centre of the cutter; this, however, may be effected by
means of a pin or other equivalent arrangement. The slots e, and f, allow of the

page_text: blades or cutters being readily removed, when required, for sharpening or other
purposes. The spring n, is provided, preferably within the receptacle o, which is
rigidly attached to the top or cover h, and the said spring presses upwards against
the under side of the blades or cutters a, and b, and thereby keeps the cutting
edges open at an angle and when closed for cutting they are pressed downwards
against and compress the said spring n. Through the lower part of the receptacle o,
the screw p, is provided for the purpose of adjusting from time to time, the height
of the spring according as the wear of the blades requires. The upper surfaces of
the blades, as reprosented on the accompanying drawings, are ground to an anglo
descending inwards so as to ensure the string or twine to be cut, always being
directed to the cutting edges of the blades a, and b.
With reference to the modified arrangement for the cutter represented at
Figure 6, it is seen that the spring n, at its upper end is secured to the underside
of one of the blades or cutters, and at its lower end it engages with the screw p,
that is to say, when the screw p, is turned in either direction, it winds or unwinds
the spring on to or off from the said screw so that the effective length of the spring
is respectively shortened or lengthened and thereby allows of the adjustment of the
blades or cutters.
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. Twine or String cutters constructed substantially as hereinbefore
described and shewn upon the accompanying drawings wherein the screw p, is
provided for the purpose of adjusting the blades a, and b, consequent on the
wearing thereof.
Second-Twine or String cutters constructed substantially as hereinbefore
described and shewn upon the accompanying drawings wherein the upper surface
of the blades a, and b, are ground to an angle descending towards the cutting
edges for the purpose of directing the twine or string to the cutting edges
thereof.
Third. The mode of attaching Twine or String Cutters constructed as herein-
before described to string boxes, or counters, or other articles by means of the
wire rings g, and slots e, and f, substantially as hereinbefore set forth and shewn
upon the accompanying drawings.
Fourth. The modified arrangement of Twine or String Cutter wherein the
spring, is attached to the underside of the blades or cutters substantially as
herein before set forth with reference to Figures 6 of the accompanying drawings.
Dated this twenty first day of March 1885.
J. H. JOHNSON, DAY & JOHNSON,
Applicant's Agents,