US2575456A - Parallel motion - Google Patents

Description

1951 E. A. MASTRIAN I ET AL 2,575,456

PARALLEL MOTION Filed April 21, .1950

4 Sheets-Sheet l INVENTORS. ELVIN A. MASTRIANI KAROL KULCZYCKI ATTORNEY 20, 1951 E. A. MASTRIANI ET AL 2,575,456

PARALLEL MOTION Filed April 21, 1950 4 Sheets-Sheet 2 ,406 60 Q 64 b2 I 5:

' INVENTORS.

ELVlN A. MASTRIANI KAROL KULCZYCKI ATTORNEY 1951 E. A. MASTRIANI ETAL 2,575,456

} PARALLEL MOTION Filed April 21, 1950 7 4 sheets-sheet s INVENTORS. LVIN A MASTRIANI Fl 5 I E BYKAROL KL JLQCZQYCKI ATTORNEY Nov. 20, 1951 E. A. MASTRIANI ET AL 2,575,456

PARALLEL MOTION Filed April 21, 1950 4 Sheets-Sheet 4 42a. 44 48a. 4 i 5011 NOAF I I 66 i 650. 90a. g 5

41a, 44a. 40a

' INVENTORS. ELVIN- A. MASTRIANI KAROL KULCZYCKI M z %m ATTORNEY Patented Nov. 20, 1951 PARALLEL MOTION Elvin A. Mastriani, Cedar Grove, N. J and Karol Kulczycki, Brooklyn, N. Y., assignors, by mesne assignments, to Steel and Alloy Tank Company, Newark, N. J., a corporation of New Jersey Application April 21, 1950, Serial No. 157,381

5 Claims. (01. 139-149) The present invention relates to a parallel motion for a loom of the fly shuttle type.

The purpose of the parallel motion is to move the picker in a direction as nearly as possible parallel to the race plate. Without some such arrangement, the picker in traveling from one end .of the shuttle box to the other would describe an are. This would give it a higher position at one part of its movement than at another and would cause thereby a very unsatisfactory pick.

The parallel motions of the prior art have involved either a rocker attached to the picker stick and cradling on a shoe or have included linear slide or slotted connections resulting in lost movements, rapid wear, defective picks and rapid destruction of the picker stick.

One object of the present invention is to provide a new and improved parallel motion substantially free from the defects of the prior art referred to.

Various objects of the invention are apparent from the following particular description and from an inspection of the accompanying drawings, in which:

Fig. 1 is a Side elevation of the loom taken ment therewith. The bracket 22 has a hub 23 from its right-hand side and showing a form of parallel motion embodyin the present invention; Fig. 2 is a section of the parallel motion taken along the lines 2-2 of Fig. 1, but shown on an enlarged scale;

Fig. 3 is a section of the parallel motion taken along the lines 33 of Fig. 1, but shown on an enlarged scale;

Fig. 4 is a section of theparallel motion taken along the lines 44 of Fig. 3;

Figs. 5 and 6 are sections of the parallel motion taken along the'lines 5-5 and 6-6 of Fig. 2 respectively;

Fig. 7 is a side' elevation of the loom taken from its right-hand side and showing another form of parallel motion embodying the present invention;

Fig. 8 is a section of the loom taken along the lines 8-8 of Fig. 7, but shown on an enlarged scale; and

Figs. 9, 10 and 11 are sections of the loom taken on the lines99, Ill-l and I l-l l of Fig. 8 respectively.

Referring to Fig. '1 of the drawings, only the parallel motion for the picker stick on the righthand side of the loom isshown, but it must be understood that the parallel motion for the picker stick on the left-hand side of the loom is of similar construction:

The loom is shown comprising loomsides In, each including a pair of vertical opposed webs or plates ll rigidly securedtogether by braces and cross-pieces (not shown). A lay I3 is reciprocated along the loom by lay swords I4 se-' cured thereto and oscillated from cranks (not shown) through connecting rods (not shown) in a manner well known in' the art. Each of the lay swords I4 is located between the plates ll of the corresponding loomside 10 and'is fastened at its lower end to 'a respective rocker-shaft l5 journalled in suitable bearings (not shown) mounted on these plates.

A picker stick [6 with a picker ISA at its upper end is provided for hurling the shuttle (not shown) across the raceway of the lay l3. The picker stick I6 is connected at its lower end' to a parallel motion l8 serving to move the picker in a direction parallel to the raceway.

The form of parallel motion shown in Figs. l-G is mounted on a cantilever part 2| of the rocker-shaft l5 projecting outwardly from the bearing on the outer loomside plate II and comprises a bracket 22 secured to said shaft part in a mannerto be described for rocking moveembracing the rocker-shaft l5 and has four reinforcing ribs 24 radiating from said hub in quadrant relationship and extending between end flanges 25 and 25.

The connection between the bracket 22 and the rocker-shaft l5 desirably comprises a tangent pin lock 21 including a sleeve 28 tangentially seated on said shaft and rigidly secured to the bracket hub 23 and to one of the ribs 24, as for example by welding. The sleeve 28 has a cut-out or slot 30 through which the rocker-shaft l5 peripherally extends and slidably receives a pair of wedges 3| through which a bolt 32 passes. The inner opposed end sections 33 of these wedges 3| are concavely bevelled for conforming engagement with the periphery of the rocker-shaft 15 where it extends through the slot 30 of the sleeve 28. Tightening of the bolt 32 draws the wedges 3| on to the rocker-shaft l5 and thereby locks the bracket 22' on to said shaft. By, loosening the bolt 32, the rotative position of the bracket 22 on the rocker-shaft l5 can be adjusted' The bracket 22 carries supports 31 and 38 for a pin or axle 39 transverse to the rocker-shaft l5 and pivotally mounting a substantially horizontal arm 40, in .a manner to be described. These supports are rigidly secured to the bracket flange 26 by webs 4| and 42 integral as shown or otherwise rigid with said flange and the axle,

3 39 is fixed in said supports, as for example by set screws 43.

The arm 40 is of skeletonizecl construction and comprises two parallel facing webs 44 rigidly connected together into a unit by a cross-piece 65 integral, therewith as shown or otherwiserigidly connected thereto. The webs M terminate at one end in respective hubs 4B embracing bushings I50 on the axle 39 with a rotative fit for pivotal movement thereon. At the other end, the arm Webs 44 rigidly carry a pin 48 held in position thereon by set screws 50 and forming. part of a linkage for supporting and guiding the picker stick I6, as will hereinafter be more fully described. y 7 V Integral as shown or otherwise rigid with the bracket flange 26 and extendingupwardly from the bracket 22 is a frame plate 55 mounting rigid therewith a bearing 5'6 for a pivot or crank shaft 51 narallelto the axle 3'9. Secured to the pivot shaft-.51 is'jan arrri 69 in the form of a simple crank shorter than the arm 49 and suspended downwardly from thebearing 58. The crank 69 is'pivotally connected to the upper end of an upstanding link. or connectingfrod 6|, as for exarnplbymeans of a pin 62 integral or otherwise rigid with, said crank andjourn'alled in an end bearing fl on said link. The pin 62 is retained in the link bearing 63'againstaxial displacement by a nut and washer connection 54. The lower endofthe link 6'! is pivotally connected to the cuter end of the arm 49 and for that purpose, a bearing QS on said link embraces with a rotative fit a bushing 9'6 on the pin 48 between the webs 44 of saidarm. v k The link 6i has a side extension 19 for securing thef lower end of the picker stick l8 thereto and alongside thereofthrough bolts II. The picker stick 16 thereby follows the movement of thelink EL. which in turn follows a guided course through the constraining action .of the arm 49 and the crank. 6J1! pivotally supporting said link. The uppenend of .the picker stick IE is thereby made to follow a course parallel to the raceway of the lay [9 as it is drawn inwardly towards the loom by heri m on Thepick motion per, se forms no part of the presentinvention and .may be of any suitable form. The specific form of pick motion shown is the gsubject matter of a copendin'g application er l N 57. 82 l A r 21, 0. and mprises a lug conneetion 80 between the outer end t r1 n rs aii cm; s ow and the picker sti 16, for transmitting the movement hi this shaft arm to said pickerstick and for thereby applying to the shuttle {not shown) sufflcient force to sees t across me loom and into the opposite box. The'lug connection 99 comprises a rigid lug stick 8! connected to the outer end or the picking-shaft re; by a self-aligning bearing 19 a rigid lug strap 82 connected to said lug stick by a self-aligning bearing (not Shown) and engaging the picker stick Hi. The log strap 82 comprises 'a pair of rigid bars 93 and 84' flanking the' picker stick l6 and projecting t their outer 'nds' beyond said stick. A catch 85 provided'wi tha cushioning pad 86 and pivotally supported between the strap bars 83 and 8t engages the outer edge of the picker stick l6.

'Ihe lu'g' 'strap fiz is guided for endwise movemerit as operated from the pick cam. For that ailsst, there is provided a guide 8! integ ral as shown or otherwise rigid with the upper end of a bracket frame plate 88 rigidly secured to the bracket frame plate 55, as for example, by

4 bolts 99. The guide 81 has a T-slot and the strap bar 84 is of corresponding formation to fit in said slot with a guide fit.

The pick motion described operates to drive the picker stick l6 inwardly towards the loom for shuttle hurling operations. To check the picker stick 6 after the shuttle has left the picker thereon, there is provided a bumper device in the form of an upstanding bumper bar mounted for pivotal movement about the axle 39 and having for that purpose a hub 9| between the hubs 46 of the arm 49 embracing the bushing 4'! on said axle with ajrotative fit. A coil spring 93 between the bracket flange 29 and the bumper bar merges said bar about the axle 39 into the position shown in Fig. 2. The upper end of the bumper bar 99 has a flat impact surface 94 coveredwith a pad 95 of cushioning material, such as leather or rubber secured to said bar by screws cc and disposed in the path of movement of the linktt. H H To limit the rotative position of the bumper bar 93 about the axle 39 againstth'e expansive ac: tion' of the ,coil spring 93, the lower end of said bar carries a screw 91 threaded therein and having a head 98 adapted in limiting position to engage a pad I90 of cushioning material such as leather or rubber afiixed to the bracket flange 25 by screws NH. The screw 91 is adjustedin the bumper bar 90 in position to' extend the surface of the impact pad 95 in a direction parallel to'the inner edge H32 of the link Bljagt the instant said link reaches said pad, so that the impact of said link from the picker stick [6' is transmittedto said pad across its full heightas shown in dot and dash lines in Fig. 2. Further movement of the picker stick 16 is checked by the counteraction of the spring 93 until said stick isstopped. Stopping of the picker stick I6 is thereby accomplished with minimum of shock. H

After the picker stick I6 is stopped in inward position, it is returned outwardly by the ex ensive action ofthe spring 93, until the bumper bar 99 reaches the limiting position shown in fuli lines in Fig. 2. Further outward movement or the picker stick 16 towards the position shown in full lines in Fig. 2 is eifected through the action of aspiral return spring H15 acting on the pivot or crank shaft 51. For mounting the-spring I95, the crank shaft 5'1 has an axial end. extension 16. of substantially square cross-section. The spring i05 is wound around the crank shaft extension I96 and has its inner end conformahly wrapped for anchorage around said shaft exten sion and has its outer endlooped around and thereby anchored to a pin I01 afiixed to acollar H18 on the bearing 56. A set screw (not shown} in the collar I08 and impinging on the bearing 56 holds said collar in adjusted position according to the. tension stress on the spring 195 desired. I

In the operation of the parallel motion described, as the lay l3 moves along the loom by the action of the crank operated lay swords ll. the rocker-shaft l5 secured to the lower end of each ofsaid layswords is oscillated and this causes the parallel motion on said shaft to rock and the picker Stick 16 carried by said motion to move with the lay along the loom. V 7

While the picker stick I6 is in the outer inactive position shown in Fig. 2, the picking-shaft arm: (not shown) operated through the picking cam (not shown) draws the picker stick |6 forcibly inwardly towards the 100th through the lug connection 80. The picker stick l 5 during its picking movement moves 'angularly about the pin 48 carried by the arm 40 at its outer end.,-.This angular movement of the picker stick l6 transferred to the link Bl causes the crank 60 to rotate clockwise (Fig. 2) about the axis of the pivot shaft 51 and the link to move downwardly substantially endwise-.---This moves the picker stick 16 substantially endwise,- so that the upper picker end of said stick-instead of following an arcuate course during picking movement of said stick follows a substantially straight. course parallel to the raceway on the lay 13.

The bumper bar 90 comes into play near the endi of the picking stroke of the picker stick IE to check the stick and to initiate its return and the spring I05 completes the return of the picker stick to the outer inactive position shown in Fig. 2.

Figs. 7-11 show a modified form of parallel motion comprising a bracket 228, secured by the tangent pin lock 21a to the cantilever part 2| of the rocker-shaft l5 and having a hub 23a embracing the rocker shaft I5 and four ribs 245, radiating from said hub in quadrant relationship and extending between end flanges 25a and 26a.

The bracket 222. carries the supports 31a and 38a for the axle 39a pivotally mounting a crank arm 409.. These supports are rigidly secured to the bracket flange 2'68. by webs 4's. and 42a. integral as shown or otherwise rigid with said flange and the axle 39a is fixed in said supports, as for example, by set screws 43a.

The arm 40a has webs 44a, terminating at one end in respective hubs 46a embracing the bushings I503. on the axle 39a with a rotative fit. At the other end, the arm webs 44a rigidly carry a pin 48a held thereon by set screws 50a.

Integral as shown or otherwise rigid with the bracket flange 26a. and extending upwardly from the bracket 22a. is a pair of parallel opposed plates 55a. mounting rigid therewith respective coaxial bearings 56a for respective pivot or crank shafts 51a. Secured to respective pivot shafts 51s are the inner ends of arms 60s in the form of cranks pivotally connected to the upper end of the upstanding link or connecting rod Bla. The outer ends of the cranks 602. are rigidly secured by tapered pin bolts 64a to the ends respectively of a pin 52a. journalled in an end bearing 63s. on the link B'a. The pin 62a forms with the cranks 60a a double crank unit and constitutes the wristpin for said crank unit.

The lower end of the link Bla is pivotally connected to the outer end of the arm 493, by a hearing 65a on said link embracing with a rotative fit a bushing 663. on the pin 489. between the webs 44a of said arm.

The lower end of the picker stick 6a. is secured to the link 6 la by a bolt I la bearing against a backing plate 698. on the outer edge of the picker stick and passing through said stick and said link.

The form of pick motion shown in Figs. 7 and 8 is described and covered per se in the aforesaid copending application and comprises a lug connection 805. between the outer end of the pickingshaft arm (not shown) and the picker stick '59. for transmitting the movement of this shaft arm to said picker stick. This lug connection comprises a rigid lug stick 8 la connected to the outer end of the picking-shaft arm by a self-aligning bearing and a rigid lug strap 82a connected to said lug stick by a self-aligning bearing 19a and engaging the picker stick. The lug strap 829. comprises a pair of rigid bars 839. and 84a flankin'g the picker stick His and projecting. at their outer ends beyond said stickr A catch a. in the form of a resilient roller is rotatively supported betweenthe strap bars 83a and '84s and engages the outer-edge of the picker stick Ilia.

The lugstrap 82a is guided for endwise movement by-a' pair of tubular guides 81a, integral as shown 'or-otherwise rigid with the upper ends of the-bracket plates 55a. These guides embrace thelug bars 833, and 84a respectively with a snug slide-fit" i J 5 The bumper device for checking the picker stick 6a after the shuttle has left the picker thereon, comprises an upstanding bumper bar 903, mounted for pivotal movement about the axle 39a and having for that purpose a hub 9|a between the hubs 46a. of the arm 40a embracing the bushing 419. on said axle with a rotative fit. A coil spring 93a between the bracket fiange 26a and the bumper bar 903. urges said bar about the axle 39a. in the position shown in Fig. 8. The upper end of the bumper bar a is curved to present a convex surface tothe picker stick l6& and extends between the lugs bars 835. and 84a. The impact surface of this bumper bar is covered with a pad 95a of cushioning material, such as leather or rubber secured to said bar by screws 96a.

To limit the rotative position of the bumper bar 909. about the axle 39a against the expansive action of the coil spring 93a, the lower end section of said bar is offset to extend along the bottom of the bracket 22a and adjustably carries a screw 91a threaded therein and having a head 98a adapted in limiting position to engage a pad Hlfla of cushioning material such as leather or rubber affixed to the lower side of said bracket by screws He.

The return of the picker stick lfia into outward position shown in Fig. 8 is effected by a spring 05a between a lower extension III] of the link Sla and a lug IH rigid with the bracket 22a.

While the invention has been described with particular reference to specific embodiments, it is to be understood that it is not to be limited thereto, but is to be construed broadly and restricted solely by the scope of the appended claims.

What is claimed is:

1. In a loom, the combination comprising a picker stick, a parallel motion for said picker stick having a rockable bracket, a frame rigid with said bracket for rocking movement therewith, and a pick motion for said picker stick comprising a rigid lug strap, and means mounted on said frame for supporting and guiding said lug strap in its endwise picking movement.

2. In a loom, the combination comprising a picker stick, a parallel motion for said picker stick having a rockable bracket, a frame secured to said bracket for rocking movement therewith, and a pick motion for said picker stick comprising a pair of rigid parallel lug bars flanking the picker stick and connected together as a unit to form a lug strap, and means secured to said bracket for guiding and supporting one of said lug bars for endwise movement.

3. In a loom, the combination as described in claim 2, said guiding means consisting of a single channel member having a guide slot, one of said lug bars extending in said slot with a snug slide fit.

4. In a loom, the combination as described in claim 2, said guiding means comprising a channel member having a T-slot, one of said lug bars havmay Z; ing a corresponding cross-section and extending in said slot with a snug slide fit.

5. In a 100111, the combination comprising a picker stick, a parallel motion for said picker stick having a rockable bracket, 2, pair of opposed parallel frame plates secured to said bracket for rocking movement therewith and upstanding therefrom, and a pick motion for said picker stick comprising a pair of rigid parallel lug bars flanking :the picker stick and connected together as a unit to form a lug strap, and a pair of guides for said bars respectively secured to the upper ends ,ofsaid frame plates respectively.

ELVIN A. MAS'IYRIANI. KAROL KULCZYCKL 8. REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 571,729 Paige Nov. 17, 1896 2,484,119 Rinne Oct. 11, 1949 2,506,145 French May 2, 1950 10 2,519,372 Hufi'erd Aug. 22 1950 FOREIGN PATENTS Number Country Date 634,943 Germany Sept. 5, 1936 862,988 France Dec. 23, 1940

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