Sept. 6, 1966
H. DYER
3,270,779
SHUTTLE DRIVING MECHANISM
Filed April 15, 1965
2 Sheets~$heet L
INVENTOR.
HE N RV
DYER
[3 Y
A'ITORMEV.
Dept. 6, 1966'
H, DYER
3,270,779
SHUTTLE DRIVING MECHANISM
Filed April 15, 1965
'
2 Sheets-Sheet 7-?
INVENTOR.
HENRY
DYER
ATTORNEY
United States Patent 0
1
3,270,779
Patented Sept. 6, 1966
1
3,270,779
SHUTTLE DRIVING MECHANISM
Henry Dyer, 136 N. 15th St., Prospect Park, NJ.
Filed Apr. 15, 1965, Ser. No. 448,317
7 Claims. (Cl. 139-138)
My invention relates generally to looms and is directed
particularly to improvements in the shuttle driving mech
anism of narrow fabric looms.
2
speed therewith.
Such looms are manufactured by Fletch
er Works, Incorporated of Philadelphia, Pennsylvania,
by way of example, and are of such well known con
struction that it is not deemed necessary to further de
scribe or illustrate them herein for a full understanding
of the shuttle driving mechanism embodying my inven
tion.
The crank-shaft arm 10‘ is formed with a longitudinal
slot 12 within which one end of a connecting rod 13 is
Although various shuttle drive mechanisms for high 10 adjustably secured by a bolt 14, said end of said con
speed looms have heretofore been devised, all have proven
necting rod being equipped with a ball bearing through
to be de?cient in one or more of the following respects:
which said bolt extends to permit free reciprocatory ac
tion thereof upon rotation of the counter-shaft 11. The
such as mitre gearing, sliding splines and universal joints.
other end of the connecting rod 13 is screw threaded,
(2) Their action induces torsional or twisting stresses con 15 as indicated at 15, and threadingly engaged in a bearing
(1) They utilize complicated and expensive mechanisms
ducive to early break-down of the mechanism. (3) They
impart undesired side thrust against the shuttle batten and
lay beam. (4) They do not produce the precise recipro
catory motion required of the picker carriers. (5) They
support member 16 equipped with a bearing through
which a bolt 17 extends.
The bolt 17 is adjustably se
cured in a longitudinally-extending slot 18 provided at
one end of an elongated main or rear rocker lever 19.
are only partially adjustable with respect to their motion 20 The other end of the main rocker lever 19 is provided
imparted to the picker carriers.
with a transverse ‘bore 20 ?tted within which is a short
It is accordingly the principal object of my invention
rocker shaft 21, said rocker lever being secured to said
to provide an improved shuttle driving mechanism for
rocker shaft for motion in unison therewith. Lever 19
power looms that obviates the above-described- de?ciencies
is secured in position by set screw 22 in addition to match
25 ing key-ways in both lever and shaft to assure no slip
in mechanisms for this purpose heretofore devised.
A more particular object is to provide a shuttle driv
page. The rocker shaft 21 is journalled in spaced paral
ing mechanism including a rocker shaft and rocker levers
lel relation behind and below the batten lay beam B
swin-gably journalled with respect to the batten lay beams,
by means of a pair of bracket plates 23 secured to said
and thus supported entirely independently of the shuttle
lay beam in laterally spaced relation as by bolts 24,
30
batten.
Yet another object is to provide a shuttle driving
and having downwardly-projecting portions carrying pil
mechanism which will be fully adjustable for ?ne motion
low block bearings 25 for said rocker shaft, said pillow
block bearings being secured to said bracket plates as
control, while at the same time being free of back-lash or
by machine screws 26.
loose motion to provide smoother action, thereby increas
Also secured to the rocker shaft 21, between the pil
35
ing potential speed of operation of a loom.
low block bearings 25 thereof, are the inner ends of a
Still anther object is to provide an improved shuttle driv
pair of laterally spaced forwardly-projecting, relatively
ing mechanism of the character described wherein the
short front levers 27, said front levers being secured to said
oscillatory motion of the batten lay beam and the rocking
rocker shaft as by set screws 28 in addition to matching
motion of the relatively journalled rocker levers are in 40 key-ways in both levers and shaft. The outer ends of
the same plane, so that undesired side pressure will not
, the front levers 27 are formed with longitudinally-ex
be imparted to the lay beam.
tending slots ‘29 received within which are sidewardly
Still another object is to provide an improved shuttle
extending ball joint posts 30 adjustably secured therein
mechanism of the above nature which will be comprised
as by stud bolts 31. The ball joint posts 30 carry, for
of few and relatively inexpensive parts, and which will 45 limited ‘universal motion with respect thereto, ball joint
be economical in cost, simple to install and adjust, and
members 32 at one end of a pair of ball joint links 33.
dependable and durable in operation.
The other ends of the ball joint links 33 have similar
Other objects, features and advantages of the invention
ball joint members 34 carrying ball joint posts 35 se
will ‘be apparent from the following description when read
cured on each to the opposed inner connector bearing
with reefren-ce to the accompanying drawings. In the 50 portions 36 of the usual triangular picker levers 37. The
drawings, wherein like reference numerals denote cor~
inner ends of the upper and lower ball joint members
responding parts thorughout the several views:
of each ball joint link 33 theadingly receive respective
FIG. 1 is a front elevational view of a shuttle driving
right and left hand theaded upper and lower ends of
- mechanism embodying my invention, shown assembled
to a 100m, only fragmentary parts of the batten lay
beam and picker carrier ‘guide rods of the loom being
illustrated, and
‘
a short connector rod 38 formed with a central hexagonal
portion 39 permitting ?ne individual length adjustment
of the ball joint links 33 in the manner of a turnbuckle.
The lower connector bearing portions 40 of the tri
FIG. 2 is a side elevational view of the mechanism
angular picker levers 37 ‘are, as is customary in the con
shown in FIG. 1 taken along the line 2—2 of FIG. 1
struction of looms of this ‘type, journalled on brackets
in the direction of the arrows.
60 41 ?xed against the front of batten lay beam B, permit
Referring now in detail to the drawings, FIGS. 1 and
ting lateral swinging of said triangular picker levers in
2 designate, generally, my improved shuttle driving mech
anism, the same being shown assembled to the batten
lay beam B of a high speed power loom for cooperative
front of said lay beam. The upper connector bearing
portions 42 of the triangular picker levers 37, as in
known construction, are pivotally connected to one end
operation with the shuttle batten assembly of the loom, 65 each of a pair of picker carrier links 43, the inner ends
indicated at 8 (FIG. 2).
of which are journalled to picker carriers 44 slidingly
As illustrated in FIG. 2, my mechanism is driven by
supported on transverse carrier rods 45 ‘arranged in
the crank-shaft arm 10‘ carried by the counter-shaft 11
spaced parallel relation in front of the shuttle batten S.
of a typical power loom of the type wherein such counter
In use, it will be evident that {the angular throw of
shafts project outwardly of one side or the other of the 70 the main rocker lever 19 can readily be adjusted by
loom frame and are geared to the main crank-shaft of
adjusting the positions of the bearings of the connect
the loom to rotate in the same direction and at the same
ing rod 13 in their respective crank and main lever slots,
3,270,779
3
4.
‘and, additionally, by adjustment of the bearing support
cillatory motion therebetween, and adjustable crank
member 16 along the upper end of said connecting rod.
Similarly, the vertical throw of the ball joint levers 33
can be further individually ?ne adjusted by positional
means interconnecting said ‘other end of said main lever
with the rotary drive shaft of the loom for imparting
oscillatory rocking motion to said rocker shaft.
2. A shuttle driving device as de?ned in claim 1
wherein said picker levers are arranged in spaced rela
tion along said batten layv beam with their sidewardly
adjustment of the ball joint posts 30 in their respective
front lever slots 29 to precisely control the lateral stroke
of the picker carrier 44. The individual length adjust
ment of the ball joint links 33 by means of their threaded
offset pivotal bearing portions facing each other, and
wherein said adjustable link means comprises a ball
connector rods 38 ‘permits ?ne ‘adjustment of the lateral
position of the picker carrier stroke with respect to the 10 joint member at each end.
shuttle batten ‘assembly S. It will thus be apparent that
full individual ‘control of the picker carrier stroke and
3. A shuttle driving device as de?ned in claim 2
wherein said adjustable link means further comprises
position in the shuttle mechanism is achieved Without
torsional forces being applied to any of the loom com
a link rod having right and left hand threaded end por
tions threadedly received in openings in one each of said
ponents, and without play or back-lash characteristic
ball joint members, whereby the length of said adjust
able link means can be adjusted by turning said link
rod with respect to said ball joint members.
4. A shuttle driving device as de?ned in claim 3
While there is illustrated and described herein only
wherein said adjustable link means further comprises a
one form in which the invention may conveniently be
embodied in practice, it is to be understood that this form 20 longitudinal slot in the other end of each of said front
levers, and means ‘for securing the lower ball joint mem
is presented by way of example only, and not in a limit
bers of each of said adjustable link means in one each
ing sense. The invention, in brief, comprises all the
of said front lever slots.
embodiments and modi?cations ‘coming within the scope
5. A shuttle driving device as de?ned in claim 2
and spirit of the ‘following claims.
What I claim as new and desire to obtain 'by Letters 25 wherein said adjustable crank means comprises a crank
shaft arm ?xed to the rotary drive shaft, and a connect
Patent is:
ing rod interconnecting said ‘crank shaft arm and said
1. A shuttle driving device for power looms of the
other end of said main lever.
type having a transverse batten lay beam, a shuttle
6. A shuttle driving device as de?ned in claim 5
batten in spaced parallel relation above the batten lay
beam and a rotary drive shaft extending outwardly of 30 wherein said adjustable crank means further comprises
longitudinal slots in said crank shaft arm and in said
one end of the loom and disposed in spaced parallel
other end of said main lever, and means for adjustably
relation with respect to the batten lay beam and shuttle
securing the ends of said connecting rod in one each of
batten, comprising, in combination, a rocker shaft jour
said crank shaft arm and main lever slots.
nalled in spaced parallel relation with respect to and
7. A shuttle driving device as de?ned .in claim 5
below the bat-ten lay beam, an elongated main lever
wherein said adjustable crank means further comprises
perpendicularly ?xed at one end to said rocker shaft and
a bearing support member, said main lever end of said
extending to the rear of the lay beam, a pair of rela
of shuttle driving mechanisms of the type utilizing mitre
gearing, splines, full universal joints and the like.
tively short elongated front levers each perpendicularly
?xed at one end to said rocker shaft and extending to
connecting rod being threadedly received in said hear
ing support member for positional adjustment therein.
the front of the lay beam, a pair of picker levers, each 40
having upper and lower and sidewardly o?set pivotal
bearing portions, the lower pivotal bearing portions of
said picker levers each being journalled with respect to
the front of said lay beam for independent transverse
swinging motion with respect thereto, adjustable link 45
means interconnecting said sidewardly offset pivotal
bearing portions of said picker levers with one each of
the other ends of said front levers for transmitting os
References Cited by the Examiner
UNITED STATES PATENTS
1,891,648
12/1932
Matthews ________ __139—137
2,221,146
11/1940
Martin __________ __._139——138
MERVIN STEIN, Primary Examiner.
H. S. JAUDON, Assistant Examiner.