Year: 1888

page_text: Date of Application, 31st Mar., 1888
Complete Specification Left, 7th Dec., 1888
Complete Specification Accepted, 8th Jan., 1889
I WILLIAM CAMPION 36 Blue Bell Hill Nottingham Machinist do hereby declare
the nature of this invention to be as follows:
:-
Each machine consists of a bed plate from which a bracket projects carrying an
axle provided with a circular bed round which a cylinder with grooved points
projecting from its periphery revolves, below the cylinder the axle terminates in a
slotted bearing in which a shaft revolves carrying a toothed pinion wheel at its
outer end which gears into a toothed ring on the lower edge of the point cylinder,
within the slot of the bearing, the axle is provided with a toothed ratchet wheel,
racked tooth by tooth by a clawker having one end rocking on a stud in the lower
end of a rocking lever, the upper end of which engages with a link operated by
an excentric the ratchet wheel is prevented from turning backward by a stop paul
which rocks on a stud secured to the circular bed.
A shaft above and at a right angle to the top of the point cylinder revolves in a
double ended bearing bracket, projecting from a plate which rocks on contres at the
back of the bed plate before named, the shaft carries a toothed pinion wheel gearing
into a toothed wheel twice its size which revolves on a stud secured to the bearing
bracket, above the larger toothed wheel is the excentric which operates the rocking
clawker lever before named, and beneath the same wheel a cam surface projects
which runs over a truck carried by an axle in a bracket projecting from the bed
plate thereby raising the double ended bracket at every other stitch made by the
machine.
The shaft in the double ended bearing bracket at its lower end, carries a hook
which revolves with it, this hook takes hold of a thread carried by a needle which
projects from the inner end of a bolt sliding in the lower part of the double ended
bracket, the sliding being effected by a stud which projects from the bolt engaging
with the lower end of a link rocking on a stud projecting from the double ended
bearing bracket, the upper end of the link is connected to the outer end of a rod
operated by an excentric or a crank pin at the upper end of the shaft above the
cylinder. Between the ends of the bearing bracket the shaft carries a grooved

page_text: driving pulley and the back end of the bracket carries a bearing and axles for two
grooved pulleys, a belt being passed round these pulleys, round the driving pulley
before named, and round a fourth pulley on a main driving shaft communicates
movements to the several parts.
The knitted or looped fabric to be operated upon is run on the points of the
cylinder loop by loop and the stitching is made by the needle passing its thread
through one loop of the fabric, the thread being secured by the revolving hook and
held until the next movement of the needle has passed its thread over the fabric
and through the loop of thread formed by the hook at the previous stitch, the
alternate stitches made over the fabric being caused by the passage of the cam
surface over the truck which raises the double ended bracket so as to lift the needle
and the revolving book above the edges of the fabric on the cylinder points at
each alternate stitch, such movements being repented until the stitching is finished,
thereby producing an over stitched seam.
DL: M
1
1 1500

page_text: DESCRIPTION OF THE DRAWINGS.
Figure 1 shows a side view of one of my improved seaming machines.
Figure 2 a plan of the same.
Figure 3 shows a cross sectional view of a circular bed and a grooved point
carrying cylinder hereafter referred to.
Figures 4 show a plan and edge view of a guard ring and shield.
Figure 5 shows in plan a slotted bearing for the shaft of a toothed pinion wheel.
Figure 6 shows in plan portion of the point carrying cylinder, a guard and guide
plate, and the relative positions of a needle, and revolving hook, as the point of the
hook passes between the needle and the thread it carries:
Figure 7 a side view of the hook, and
Figure 8 an enlarged side view of the thread carrying needle.
Each machine consists of a bed plate A from which a bracket A¹ projects, carrying
an axle A provided with a circular bed B round which a cylinder C revolves, the
upper edge of the cylinder and its inner inclined face have saw gates cut in them
of the required guage and distance apart to suit the fabric to be seamed and to receive
the stems of points C "shown at Figures 1 and 6" each point is grooved at the top
to receive the point of a needle which slides above it, the grooved points project
radially from the perhipery of the cylinder all round it and are firmly held in position
by clamping plates C screwed to the cylinder.
The cylinder has an inner flange sliding on the bed B upon which it is held down
by a ring B screwed to the bed, pressing upon the recessed upper edge of the
flange.
The axle A² terminates in a slotted bearing Cs (shown in plan at Figure 5) in which
a shaft revolves carrying a toothed pinion wheel C at its outer end which gears into
a toothed ring C, forming the lower edge of the cylinder, within the slot of the
bearing C, the axle is provided with a toothed ratchet wheel C the upper edge of
which passes through a slot in the bed B, and is racked tooth by tooth by a clawker C
having one end rocking on a stud in the lower end of a lever C carried by an axle
projecting from the lower bearing of a double ended bracket hereafter described, the
upper end of the lever C, engages with a link C operated by an eccentric D³, the
ratchet wheel is prevented from turning backward by a stop paul Co which rocks on
a stud secured to the ring B', on the circular bed B, to the lower edge of which a
guard ring and shield (shown at Figures 4" and a conical shaped cover "shown
only in section at Figure 1" are secured by screws, the shield and cover enclose the
the pinion wheel slotted bearings C and ratchet wheel C thus preventing the
lubricating oil from soiling the fabric to be seained.

page_text: A shaft D above and at a right angle to the top of the point cylinder C revolves in
a double ended bearing bracket D¹ projecting from a plate D' which rocks on screw
threaded centres D³ provided with lock nuts for adjusting them, near the back of the
bed plate A before named. The shaft carries a toothed pinion wheel D* gearing into a
toothed wheel D³, the teeth of these wheels are of the usual shape and are shown only
at Figure 1, the wheel D is twice the size of the pinion wheel and revolves on a stud
secured to the bearing bracket, the top of the wheel D³ carries the eccentric D® which
operates the rocking clawker lever before named, and beneath the same wheel a cam
surface E projects which runs over a truck E¹ carried by an axle in a bracket E³,
projecting from the bed plate or secured to the base of the arm A¹ "as shown at
Figures 1 and 2."
The shaft D at its lower end carries a hook D7 "shown in plan and side view at
Figures 6 and 7" securely held by a set screw shown at Figure 1, the hook revolves
with the shaft and takes hold of a thread carried by a needle which projects from the
inner end of a bolt F in which it is held by a set screw shown at Figure 6 the pro-
jecting stem of the needle is grooved on the underside to receive the thread it carries
which is threaded through the eye of the needle from beneath and lies over the needle
above the recess shown in side view at Figure 8, next the eye, in this recess the point
of the hook enters between the needle and the thread as it secures a loop of thread at
each revolution.
The passage of the cam surface E over the truck E¹ raises the bracket D¹ plate D³
the needle bolt F and other parts attached to them at every other revolution of the
hook shaft D.
The needle bolt F, slides to and fro in the lower part of the bracket D', the sliding
being effected by a stud which projects from the bolt engaging with the lower end of
a link F¹ rocking on a stud projecting from the bracket Dthe upper end of the link
engages with the outer end of a rod F operated by an excentric F³ carried by the
hook shaft below the hand wheel at its upper end.
Between the ends of the bearing bracket the shaft D carries a grooved driving
pulley F4 provided with a stud on its lower side which engages with a disk Fas
shown at Figure 1 a disengagement being effected by raising a lever F to lift a
forked slide which clips the boss of the driving wheel in the usual way, the back end
of the bracket D' carries an axle for two grooved pulleys F7, a belt being passed
round these pulleys, round the driving pulley, and round a fourth pulley on a main
driving shaft communicates movement to the several parts.
The thread the needle carries is supplied from any suitable shaped cop placed upon
a cop pin G and passed over the loop of a guide wire 1, down and through the hole in
the guide pin 2, round the pin of the clamping disc 3, through the hole in the guide
pin 4, round a loop 5 which projects from the side of and slides to and fro with tho
needle bolt F, the thread is then passed through a hole in the inner end of the bolt s
and through the eye of the needle from beneath as before described, as the needle
moves outward the slack thread is taken up by the loop 5, the clamping disk "which
is held down by a spring within its bracket" being raised by the curved lower end
of a lever 6 rocked by the lever F¹ to unclamp the thread while the loop 5 draws off
a sufficient length for the next stitch, the thread may be further tightened if required
by passing it through two or more slots in the tension plate carried by the guide
wire 1.
As the needle passes its thread through or over the fabric to be seamed, it passes
between the top of the grooved point carrying cylinder and the underside of the
narrow edge of a guard and guide plate H shown in plan at Figure 6 secured to 5
the ring B on the circular bed B, portion of the narrow edge of the plate is cut
away on the lower side to allow free passage for the needle, the narrow edge of the
plate lying close to the top of the cylinder holds the selvages of the fabric firm
while the needle is passing through.
The fabric to be seamed has both selvages run on the grooved points of the cylinder 5
loop by loop and the stitching is made by the needle passing its thread through one
loop of each selvage of the fabric, the thread being secured by the revolving hook

page_text: and held until the next movement of the needle has passed its thread over the
fabric above the grooved points and through the loop of thread secured by the hook
at the previous stitch, the first loop of the thread being released by the hook as it
secures the second loop and draws it through the first loop, the alternate stitches made
over the fabric, being caused by the passage of the cam surface over the truck, which
raises the bracket D' so as to lift the needle and the revolving hook above the selvages
of the fabric on the grooved points of the cylinder at each alternate revolution of the
hook such movements being repeated until the seaming is finished, thereby producing
an over-stitched seam.
I am aware that a revolving hook and a straight pointed needle has been used
before in combination with a revolving cylinder carrying round points on the lower
edge, known as the common stitching machine.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to bo performed I declare that what I
claim is :-
1. The construction and employment of a revolving hook operating in conjunction
with a revolving cylinder carrying grooved points, and a thread carrying needle
having its point bent down so as to enter the groove of each point, substantially as
described for the purpose specified.
2. The construction and employment of a pinion wheel D', carried by the revolving
shaft D, and gearing into a toothed wheel D, provided with an excentric DⓇ on the
top, and a link C, for rocking the lever C, to operate the clawker C7, substantially as
described.
3. The cam surface E, below the toothed wheel D' the axle and bracket E³, carrying
a truck E¹, for raising the boaring bracket D₁ to lift the needle and revolving hook
above the selvages of the fabric, substantially as described and illustrated in the
Drawings annexed.
Dated this Sixth day of December 1888.