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Патент USA US2135373

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Filed July 6, 1955
4 Sheets-Sheet 1
"Nov. I, 1938.
~~- “"1
Filed July 6, 1936
I ‘Jn/umm
x Nov. `1,_ 1938.
Filed July 6, 193B
4 Sheets-Sheet 3
[Si @USL âwlLso
Nov. l, 1938.
` P. a. WILSON
l~1=i1ed July e, 193e
4 Sheets-Sheet 4
PAUL [5N/1.5m
î’atenie? Nov. 1, 1938 '
Unirse' stares Partnr ortica
2,135,373 -
raul n. wilson, Greenwood, s. o., mimi»- or
vone-half to Lucius K. Etheredxe, North, S. C.
Application .my c, feas, sei-lai No. 39,101
ZCISimB. (ci. 13s-134i
'This invention relates to a shuttle actuating scription proceeds when taken in connection with
mechanism for looms and more particularly to the the accompanying drawings, in which:
application of a tiges phase alterna_tì_l_g__gll„lír_ent `
Figure' 1 is a front elevation of portions of a
'Wind-media the lay of a ioömîñ'sñöh a manner loom showing the invention applied thereto;
` 5 'th‘ât'thè current in the winding will set up a mag
Figure 2 is a sectional plan view taken along 5
,netic iiux in the shuttle to cause the same to be the line 2_2 in Figure 1;
moved. When a suitable winding is placed inthe
Figure 3 is a transverse sectional view taken
lay of the loom. similar to the commonly known
winding in a squirrel-case motor and the current
10 is introduced into this winding, the magnetic ac
along the line 3-3 in Figure 1;
Figure 4 is a transverse sectional view taken
along the line 4-4 in Figure 1;
tion of this current induces an opposing current
Figure 5 is a plan view of the left-hand end of
in a suitable short circuitedcgpper ban_d around
the shuttle and the reaction between the two cur
the lay of the loom showing the windings and
their relation to the laminated plate structure;
Figure 6 is a schematic view showing the wind
ingstin each of the coils shown in Figure 5;
Figure '7 is an isometric view showing the lami
rents drives the shuttle across the loom. In other
15 words, the circulating current induced in the cop
per bands around the shuttle sets up a magnetic
„aeidln oppositicatdthastawr ilëïäìïsives the
nated structure with slots therein which are
shuttle a resulting iorceina direction parallel to
adapted to receive the three phases of alternat
the stator winding and at a right angle to the
ing current winding;
20 stator iiux.
The winding in the lay of the loom corresponds
to the stationary magnetic field in a standard
squirrel-cage motor, whereas, the copper bands
around the shuttle correspond to the rotor in said
25 motor.
It is, therefore, an object of this invention to
provide a suitable winding in the lay of a loom for
using alternating current and thereby, make it
possible to obtain a positive moving field at all
30 times which `will impei the shuttle back axfd forth
across the lay of the loom.
Figure 8 is a schematic wiring diagram of the 20
It is a further object of this invention to'pro
vide a suitable 4reversing switch_in the electrical
Referring more specifically to the drawings,
the numerals i0 and l0' indicate suitable end
frames of a loom. In the lower portion of the
loom there is` mounted for oscillation a suitable 25
rocker shaft i2. Fixedly secured to shaft i2
are swords I3 and i3' which have mounted on
the upper ends thereof a suitable lay broadly in
diqated by the reference character“ H which
has secured to its ends shuttle boxes i5 and i5’ 30
for receiving the shuttle and expelling it there
from `in its recìprocatory movement across the
Secured to the upper portion of the lay
hook-up which -is oper-_at_eclïy the movement of; of the loom and at the central portion thereof is
a conventional reed i6 through which the warp 35
35 the laytdirevers'e thecurrent` and cauÍs-ëïzïféîòîi
stantly moving magnetic field_tgubemrevçrsed to is drawn.
throw the shuttle in the opposite direction. 'I'his
-reversal "of’force drives the shuttle back across
the loom and the operation is repeated for every
40 pick of the loom. 'I'he speed of the shuttle can be
adjusted by varying the frequency of the alternating current.
It is a further object of this invention to provide
an electrical hook-up adapted to receive alternat
45 ing current for propelling a shuttle back and forth
across the loom with means for reversing__sal_d
current before the shuttle has reached _the?end of
the lay, thereby, provldingì?'?iaëíetightake for
smartsite Shetaëand reverïiîífadirecaonar
50 'traveL By' making this reversing switch adjust
’ able it is possible to eliminate check straps and
the like, which are necessary in the conventional
loom for arresting the shuttle at the proper time.
Some of the objects of the invention having
55 been stated, other objects will appear as the de
In the regular operation of the loom theJaiLL
oscillates back and ¿orthßboug,themockenshait
hi‘i while the shuttle in the lay of the loom moves
longitudinally on the lay to carry the filling baci: 40
and forth through the warp. Heretofore. it has
been necessary to provide suitable picker sticks
at each end of the lay for imparting to the
shuttle the necessary inertia to cause it to be
thrown back and forth across the loom.
'I'his invention provides a standard alternating
current winding in the lay of the loom for ob
taining a positive moving field which will carry
the shuttle across the loom in one direction and
means for reversing the direction of this iìeld 50
at the proper time are also provided to cause
the shuttle to be carried in the opposite direction.
In order to furnish the necessary vcurrent for
the operation of the device, to be hereinafter
described. suitable lead-in wires i1, i8 and i9 55
2,135,... s
suitable means such as bolts s! and BI' which are
coil `|22.' a wire |23 leads therefrom which is
also insulated from the plates. The _casings in ~ connected to the next succeeding coil |20 of phase
which these plates are located are made of a_ A in the winding 16.
suitable insulating material.
Each of the sections of plates „have a plu
rality of vertically disposed slots cut in one edge
thereof which will be denoted by reference char
acters E8 to |00 inclusive in which suitable wind
ings are inserted. Located in the central ptrtion
10 of the lay is another section of laminated iron
plates which is denoted by reference character
|05 and this section has a plurality of. slots 39 to
I 08 cut in the face thereof for receiving similar
coils. The construction of section |05 may be so
that it can be divided into a plurality of sections
with slots 89. to |98 therein or it may be made
in one continuous section having these same slots
placed therein in repeated form.
The section |05 is enclosed in a casing com
prlsing members ISS and losa which section is
held therein by any suitable means such as in
sulated bolts |01. Disposed on top of section iBS
» is a bed plate |98 which is made of a suitable
insulating material and which has serrations in
the upper surface thereof for accommodating the
warp threads. The shuttle 4B travels over this
The wiring which is adapted to be placed in
the slots 89 to |02 inclusive in the laminated plate
is essentially that of the windings of a three
phase induction motor. The section of winding
15 which is adapted to be placed in the laminated
section 85 will be described and its connection
with the subsequent section of winding 1S. Since
the winding in the sections 1B, 11, 18 and 18 is
identical a repeated description will not be made.
The windings in the plates 35 comprise phase A,
phase B and phase C, each of said phases com
prising a pair of coils and each oi' the coils hav
lng a plurality of turns therein such as shown
in Figure 6. In this particular case each'coil
has eight windings therein, however the windings
may be varied to accommodate different designs.
'I'he wire 51 leads into coil liß which coil con
sists of a number of turns such as are shown in
Figure 6, and from this coil a wire ||| leads
therefrom which is connected to another coil
H2. Both of these coils comprise phase C of
this particular winding and it should be noted>
that the coils are adapted to be inserted in the
slots in the laminated section oi plate 15 in a
manner shown in Figure 5. From the coil ||2
a suitable wire H3 leads to the next succeeding
coil lili in phase C of the section of winding 18
disposed in laminated plate structure 85.
The wire 88 which leads to coil H5 is similar
in all respects to the coil H0 just described but
being disposed in different slots and also being
disposed in overlapping relation to the other coils.
This coil has a wire H6 leading therefrom which
is connected to another coil l i1 placed in over
lapping relation to coil H5 and being likewise
disposed in suitable slots in the plate. Coils H5
and H1 comprise phase B of the winding. From
coil | Il a wire H3 leads to the next succeeding
coil I|5 of phase B in the section 16 of the
The wire 25 leads into a coil |20 which is also
placed in slots in the laminated plate structure
Tl) 85 and has a wire 12| leading therefrom which
is connected up in series to a coil |22, both of
the coils |20 and |22 are placed in overlapping
relation to each other and with respect to the
other coils in the phase and comprise the phase
A of the winding. From the other side of the
This method oi' winding is continued through
section 16 and section 19, section 18 and section
11. 'I'he section 18 is divided up into a plu
rality of windings such as have been previously
described in the section of winding 15. and the
number of sections of windings in the section
19 being determined by the length of the lay and
the design of the loom. Leading from coils H2,
||1 and |22 in the section 11 are suitable wires
|28, |29 and |30 which are joined together and
connected to a wire ISI:v said wire |3| being
grounded as at |32.
The showing of the windings in the drawings
has been enlarged for the sake of clearness.
It is to be understood that each coil would cross
the laminated structure at very much closer in
tervals than those shown in order to prevent ex
cessive speed of the shuttle.
Referring to Figure 2 it is seen that the shuttle
I8 has suitable copper bands or rings |38 on
each end thereof ïlïichnc-orresçpond to the rotor
of an induction motor.
Since the windings in
sections 15, 16, 11, 'I8 and 19 correspond to the
?eld coil or stator ln the induction motor ex
cept that they are in a developed form instead of
being disposed in a circle it is quite evident that
by introducing current into the winding in sec
tions 15 to 19 that a circulating current will be
induced in the copper bands |3â which will set up
a magnetic field in opposition to the stator iield
and give the shuttle a resulting force'in a direc
tion parallel to the stator windings and at right
angles to the flux. Immediately before the
shuttle has reached the box on the other side of
the loom the current will bewreversed, by means
of the reversing switch 2S which will not only
cause a magnetic bralge’to be applied to stop the
shuttle,`mnîe, reverse the direction of
travel thereof. Disposed in shuttle boxes I5 and
I5' are suitable impact members N0 and ISU'
which are held in extended position by springs.
lll and IM’. These impact Amembers assist in 45
checking the shuttle in the shuttlenboxpsg,
"Iî'tlíï'c‘irawi'ñg‘s‘"änd"§îi’éciñ€ation there has
been set forth a preferred embodiment of the
invention, and although speciilc terms are em
ployed, they are used in a generic and descriptive
sense only and not for purposes of limitation,
the scope ofthe invention being set forth in the
appended claims.
I claim:
1. In a loom having an electro-dynamic ap
paratus for eii'ecting rectilinear movement of a
_filling carrier through a warp shed comprising a
lay having a ñlling carrier box in each end there
of, a stator field disposed in the entire length of
said lay and on each side of said boxes, each soY
stator ñeld having a plurality of phase windings
therein, a non-conductive base plate disposed up
on said lay and over said windings, said plate
having a plurality oi’ transversely disposed ser
rations in the top surface thereof for the ac 65
commodation of the warp threads, a ñlllng car
rier having an electrically conductive body
adapted to move back and forth between said
boxes along the top of the lay, means for ad
mitting alternating current to said windings to
produce a flux of variable density in said wind
ings which flux acts to induce current and create
a positively moving magnetic field passing
through said electrically conductive body to cause
the shuttle to be impelled across the lay.
2. In a loom having a shuttle with an induc
tion element therein;`a lay having a shuttle box
on each end thereof for confining the shuttle in
its travel across the lay, a‘polyphase field wind
ing in the`Y entire length of said lay and shuttle
boxes, means for` creating a constantly moving
ñeld in said ñeld winding which passes through
-said induction element to impel the -shuttle from
one shuttle box-‘to _the other, and means oper~
able upon the absence of ashuttle in one o! the
shuttle boxes upon the completion of a pick of
the loom for eliminating said induced constantly
moving magnetic iield. a non-conductive base
plate disposed over said lay and over said wind
ings for supporting the shuttle, said plate having
a. plurality of grooves therein for receiving the
warp thread as the shuttle travels across the lay.
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