IMPROVEMENTS IN SHUTTLES FOR SEWING-MACHINES
Year: 1883

page_text: LETTERS PATENT to Herbert John Haddan, of Kensington, Middlesex, for an
Invention of IMPROVEMENTS IN SHUTTLES FOR SEWING-MACHINES Com-
municated to him from abroad by Emil Capitaine, of Berlin, Germany,
PROVISIONAL SPECIFICATION left by the said Herbert John Haddan at the
Office of the Commissioners of Patents on the 31st January 1888.
HERBERT JOHN HADDAN, of Kensington, Middlesex, "IMPROVEMENTS IN
SHUTTLES FOR SEWING-MACHINES," a communication to me from abroad by
Emil Capitaine, of Berlin, Germany,
This invention relates to the method of carrying or guiding the thread on its
way from the spool.
I provide one side (the top side) of the shuttle with a longitudinal opening
running obliquely in the direction from the rounded part of the rear end towards
the point of the shuttle, and cut from the front end of this opening an oblique slot
to the pointed side of the shuttle, said slot being also oblique to the side of the
shuttle (instead of perpendicular thereto). The tongue or spring thus formed
between the longitudinal opening; the slot and the (pointed) side of the shuttle,
and which forms a part of its side, is provided with a row of holes similar to those
used in some older sewing-machine shuttles, and these holes are united with the
pointed side of the shuttle by slots perpendicular to the longitudinal axis of the
shuttle.
Along the top of the shuttle and over the said tongue runs a guide-spring,
divided into two arms united at both ends, one arm (that nearest to the pointed
side) serving to retain the thread in the row of slotted holes mentioned above,
while the other arm, serves the usual purpose of guiding the thread,
The front end of said spring is rivetted to the shuttle, while the rear end is
bent round the rear edge of the shuttle and projects into an oblique recess of the
said edge.
The arm near the pointed side of the shuttle rests against its side while the other
arm recedes from the shuttle as usual.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Herbert John Haddan in the Great Seal Patent Office on the
28th July 1883.
HERBERT JOHN HADDAN, of Kensington, Middlesex "IMPROVEMENTS IN
SHUTTLES FOR SEWING-MACHINES," a communication to me from abroad by
Emil Capitaine, of Berlin, Germany
On the accompanying drawing Fig 1 is a top. view of the shuttle (showing the
spring), Fig 2 a side view (open side), Fig 3 a bottom view, Fig 4 a longitudinal
section, Fig 5 a back view and Fig 6 a cross section.
The form of the shuttle is the same as used for Singer sewing machines.
In one of the long sides of the shuttle A is a longitudinal opening a (Fig 3) and
a bore b running obliquely in the direction from the rounded part of the rear end
towards the point of the shuttle, and opened towards the flat side of the shuttle by
a slot c.
The guide bridge 8, rivetted at i on the inner side of the shuttle, enters half
into the longitudinal opening a (Fig 6) and protrudes through the bore b, pressing
like a spring on the outer side of the latter, and extends its head a little over the
shuttle (Fig 2.)
The other long side of the shuttle is provided with a row of holes d¹, d². similar
to those used in some older sewing machines, but here they are slitted towards the
flat side of the shuttle (Figs 1 and 4). Underneath the holes d', d. is, slanting
downward, the longitudinal opening e also cut open by a slit foblique to the great
axis of the shuttle, while the slits of the holes d' d are perpendicular to the
said axis.
The guide spring F has the shape shown in Fig 1. It is divided in the middle
into two arms g and h, of which serves to guide the thread as usual, and h serves
to retain the thread in the holes d' d² The left end of the spring F is rivetted to
the body of the shuttle A (Fig 1) while the right end k is bent round so as to
form a a hook which projects into an oblique recess o of the shuttle A. The arm h
of the spring F is in contact with the side of the shuttle, while arm g is kept at a
distance from the shuttle as usual in order to guide the thread when the loop is
formed.
By means of the longitudinal opening e and the slit f that part of the the shuttle
side which is provided with the holes dd2 forms a spring R, which plays into
the inside of the shuttles, when a thread is drawn through the opening e or
underneath the arm h. The stretching out of the thread may be attained in any
degree desired and without threading, by introducing the thread into one or
several of the holes as has been the case with the closed holes hitherto used.
The introduction of the thread is effected in the following way:-
The free end of the thread wound off from the bobbin is put through the slit c
and round the protruding end 81 of the bridges, then the thread is stretched and
as it will get between the bridge and the sides of the bore b, the elastic bridge 8
will recede, and the thread laid round it will enter the hole a. Thereupon the
thread is put into the slit d', kept there with a finger of the hand which holds the
shuttle, while with the other hand the free end of the thread is taken round
the projecting extremity k of the spring F in the direction indicated by the arrows
(Figs 1 and 5).
If the thread is now pulled, the thread in the recess o will get between the side
of the shuttle and the spring F, gain the position d and readily enter the hole d'.
To introduce the thread into a second hole, the left hand has to hold fast the

page_text: stretched thread on the side of the shuttle while the free end of the thread is led
round the end k of the spring in the same way as before, but in the opposite
direction of the arrows, thereby obtaining the position 8, which greatly facilitates
the placing of the thread in any of the holes d³, d³, d³, and finally to tighten
the loop.
In a similar way as ẞ the noose 6 is formed, the thread is held fast with the
finger in another slit, and manipulated as already described for the introduction of
the thread into the hole d¹.
°
Lastly the thread end is held on to the slit f, led into the spring end k and
pulled; the elastical shuttle side leads it into the slit c and underneath the spring F,
thereby obtaining the position required for sewing.
In this way the thread can be introduced into the friction or tension holes of
the shuttle without threading being required, and the manipulation is so easy and
quick, that it allows one to apply any desired tension of threads by a skilful use
of the holes.