US1770269A - Loom mechanism - Google Patents

Description

July 8,1930. B. b. HAHN 1,710,269

LOOM MECHANISM lFiled Dec. zo; 1923 2 sheets-sheet 1 43 44 4g To 'F l, Je 6 41 /10 x55 j/ Z 1 l y /l a Z7 1 @e ATTORNEY July 8, 1930. B. D. HAHN I LOOM MECHANISM Filed Dec. 20, 1928 2 Sheets-Sheet 2 lNvENToR DJlHahn ATTORNEY vPatented Julyv 8, 1930 ,est

BENJAMIN D HAHMOF GnnnnviLLE, sourir CAROLINA Y p L ooM- ivrnorianisiu Appucann fiieafiiecemtervzo, Y1928. "sel-laine. seneca:

Y This invention relates to the weaving art,

and is more particularly concernedvvith bat-l ten' and batteri operating mechanism for power looms.

5 Gnefeatureof the present invention is the .Y provision of a reed-like batten with inecha-l msm for moving said batteri toward and from the fell, beating up the iilling asit is inserted and coinoidentlyeli'ecting a combing of the warpshed. This to andvfro movement is timed, preferably, to bring the batten to the fell .substantially coincidently vwith the re- Tversal of the heddles and .of the-threads of periods that the shuttle remains in its box l t break-outs are impossible.

so tiiat y A further and related feature is the pro'- vision of a reed-like batten automatically movable toward and from tliefelly upon'the` o entry of the shuttle in itsboX, and during its retention inthe box to press the filling thread into theY fell of thel cloth with the return movement lof the batten Ieifecting a combing of the warp shed.

A further feature of the invention is the provision of a shuttle race yplate having its race portion between the shuttle bones separate therefrom, a frame mounting a reedlilie batteri on which frame said race plate Lio section is also inountechand mechanism vfor for automatically movingsaid frame with its batten and race plate from a position of aline- 'inent of race plate and shuttleboxes-toward the fell and reve'rsely to alined position in timed relation to and during'the periodA of Vretention of the shuttlein its boX;

Another feature of the invention consists .of mechanism for moving the batteri pre- I viously described toward and'from the fell including mount for said batteri, a power Ytively controlled by the 'cams fell in timed relation to and duringV period the shuttle remains in the shuttle"` interference is prevented byautomati# Ycally controlling andv restricting the beating" up and incidental combing operations to thev view, theinvention consists'in driven dual vcontrol cam, bei' cooperating with and positively moved thereby in opposite directions, and means con iiectingsaid operating member and-mount fo'ijmovement inl unison when and While a shuttle is in its box. The dual cam control ensuring positive forward f movement and return of the hatten and race plate is a partic'ular advantageous structural provision, Y ince the movement of these parts isposi-` and the cam sliaftbeing coupled to thefpower drive of the loon'n'the cams can be gured to synchronize with the lieddle vmovementJ to` permit the combingv of the warp shedsv by Athe batteri as previously describedand. also synchronized an roperating mem-v with'tlie operationmechanism for the Vpicker sticks throwing the shuttle' to time the fon' jward and. return 'movement ofbatten and race plate to the period of inactivityof the picker sticks and therefore to the timer the sh zittle remainingjin the shuttle boxes;

With the above noted and other objects' in l the novel fea- Vtures ofconstruc'tion and-combinations and' arrangements of parts as willbe hereinafter inore'fully set forth and pointed lout in theclaims.V

v. The'structural features of the invention and its operation will be more clearly underf stood from the following detailed specification which. is to be read in conjunctionwith Vthe accompanying drawingsy forming part thereof, and in which :-l i o c Figure lis a topplan view of the mecha# nisnis of the present invention mounted in a loom frame, the associated mechanism of the loom being omitted.

Figure 2is a transverse vertical section on an enlarged scale through the loom frame on the line 2 2 of Figure' 1. i

Figure 3 isa vertical section through the lay beam and oscillating` frame or mount car.- rying the reedlilre hatten and race plat-e, the

ksection bein-g taken online 3-3 of Figure 2, v a forward position of the mount with its associated parts being shown 'in dotted lines.

Figure Il is afragmentary view in side elevation of'thevniechanismof 'Figure 2, show-v in the duel camcontrol mechanism and its Cfr umass tain cam operated mechanism *i hereinafter described, the intermediate section' 20 of the race platey is alined with the end sections 22,

of the race plate .extending inwardly f'r'oinf the mouths of the shuttle boxes and forming a continuation; of their bases as'shown in-llig-` Life2- l j Mechanism, power driven in timed relation to the operating mechanism for the heddle reversing and shuttle operating` mechanism is employed to effect oscillation or re,ciprocation' of the crank arm l2 attached to the outer end of the roch shaft 10,1this mechanism includ-Y Y ing a couplingl element for1 connecting the crankv arm l2 therewith for actuation, which coupling mechanism is controlled ,by the shuttle through its entry in a shuttle box. i

A power driven shaft SQVmounted in the frame rearwardly of the heddles 3 andtoward the warp roll and whichmay constitute the main drive shaft of the machine or be intergeared therewith, entends outwardly from side member l of theframe'and has mounted upon its outer end 'a pair of complemental cams 40, il in abutting vaxially tion on the shaft. A reciprocating actuating member in the form of a pitman bar, generically Vdesignated. at 42 has its Vrear end formed as a dat verticalplate 43 longitudinally slotted and riding over the shaft 39,

this plate having' on thejopposite .side faces thereof, r igid cam abutmentsgfl, d engag-y 41 and harnessing the pitman bar thereto. The rear end of the pitman bar has enten'- sion 46' guided in a bracket 4:7 attached to the side'face of the side frame member l (Figure el). rlhe bar, vforwardly of the abutment 44- eXtends as a Hat platefldguided for rectilincf ar reciprocating movement through a bracket .119 outstanding from the channeled 1iser bar 2 of the frame, this plate 4:8, from a point unfderlying the beam 5 forwardlyto the crank ing the edge of the respectivecams e0 Varm l2 of the rook shaft, being continued as a boxing 50 open at its top and bottom faces and reduced in height at a point intermediate its ends 'to provide latching should ers 5l which with the abutment formed by the inner face of the front endrwall 52 cooperate with the upper end ofthecranlrr arms l2 and with a latch mounted-thereon to couple the pitman bar 42 tothe cranlvarmfor reciprocation as and Iwhen permitted by certain shuttle controlled mechanism.

Referring particularly'to Figures 2,' -land 5 7, it will'be seen that the upper end yof the crank 12 1s reduced 1n width as it. enters` beneath the boxing" 50. (seeFlgure t)4 and' is formedwith bifurcated ears` 58: which project which posi -f Vsaid 4box to latchv the upper-ond 12to the box 50 constitu spaced rela- Y arms 6 1 inwardly against the abovethe upperedge Ot the baai forwardly proiecting ,lug f5.4- ,extending l forwardly over Yand vabove vthe front. gend 0f the honing.' .-'lhe ears 53 constitutea brachetibe tween which'is mountedthe dependlng .pivot lug 55 ofthe-latching member shown in F ig'- ure f7 anc tending bar 5G from the under feeeof the pivot lng depends diate itsends-f bar 56 is provided with a crossflatchi'ng` bar 5? Ventendi.11gfrom opposite edges thereof Vand depending ,therefrom, the cross VbarA being which spacedfrom,-thehingedl lug' .e suiicient v die* t tance to position itslower edgeiwhen dropped adjacent; tovland against. the shoulder abutments y5l`of the boxQat the end of the'pitman bar with the forward edges of theears 53 en'GaOinfr the abutmentsurface52 rovidl ed bythe inner facevof the forward end of of the crank the forward end of the pitman bar. A coil spring 56" in terposed between the lug 5ft and the forward end of the longitudinal barf58 of the latch normally tends to movethe ycross latching bar -57l thereof downwardlyrinto engaging rolas tion withv the' abutment shoulders 5l. kThis cross bar V5'5" is of sucient depth relatively 'to the depth of theshouldered.portions 5l sothat when itis movedvdownwardly to' engage the "upper edge of the boX 50 andfabut the'shoulders 5l, the rearrend 5S? of the-bar will extend above the top face .of the and provide `a lifting lip. Y A

The spring iin-polled movement ofthe cross latch bardownwardly is controlled, i. a, permitted andy Y prevented ,l through cooperating mechanism actuator through the usual binders 29 of the shuttle boxes as moved outwardly by the entry of the shuttle therein vand as moved inwardly by their springs 3l when the shuttle is driven from the box. According ly, a rock shaft 58 extends across the laybeam and below the oppositeshut-tle .boxes and is 59 having brackets 60 journallod in bearings secured to the forward side face of the lay beam. Below each shuttle bon, a crank v*arm 6l is aflixed to the rock shaft 58 through its sleeve 62and is positioned to cause its enlarged andiattened upper end 63 to rest against the inner end 32 of the shuttle boi; binder 29. A coil spring 64 encircles the shaft 58 between the shuttle boxes and has its opposite ends anchored to the lay beam 5 and to the s haft58 so that'the rock shaft norm-ally tends to `press the upper ends 6 3 ,of the crank inner end 32 of thebinder. Outward movement of a binder through the entry of the shuttle `in the boX will therefore through thecrank arms 61 roch comprising a longitudinally o 6.x-,

etl a point interino VRearwardly of' thev lug, the

boxing... ,e

ligand with l the shaft 58 forwardly, and the exit of' the reversely rotating the rock shaft 58. Between the sleeve 62 of the crank arm and the outer bearing 59 beneath the shuttle box at that side of the loom mountingthe dual cam and pitman, the sleeved rear end 65 of a trip arm 66 (Figures 4 and 5) is afixed to the shaft and rocked thereby, the forward end of this trip arm extending between the sides of the boxing 50 and underlying the rearward end or lifting lip 56a of the latching member. When Vthe binder 29 is moved outwardly by the entry of theshuttle in a shuttle box, therefore, the rock shaft 58 will be rotated forwardly and the trip arm 66 will be lowered permitting the coil spring56b to move the cross bar 57 of the latch downwardly to latch the pitman bar andcrank arm together for reciprocation through power operation of the cam shaft 39. The rear end of the latch bar is only positioned for engagement by the trip arm 66 when the oranlr arm l2 is in the position alining the race'plate on the frame carried by the rock shaf with the shuttle boxes 6 and their race plate extension 22 which is the position occupied by these parts shuttle is in a shuttle box and has inserted its filling thread through the warp shed, and is the posit-ion occupi-ed by the parts when the rock shaft and the frame have returned from a forward movement of theirinitial position, this return being figured through the cam drive to occur just prior to the ejection ofthe shuttle from a box. lf the shuttle actuating Ymechanism should for some'reason fail and the shuttle not enterA the bor, the pitman bar will continue to reciprocate without moving the crank arm since the lower end of the latch bar 57 will remain raised by the trip arm 66 to clear the upper edge of the boxing 50. Likewise as above stated, the trip arm 66 is only lowered to latch the cranlr arm l2 and pitman bar when the shuttle has entered the shuttle box.

rlhe pairs of'cams 4:0 and 41 mounted upon the power shaft are rotated by the shaft in timed relation both to the shed reversing mechanism and to the shuttle operating mechanism and the cams will be figured and timed through the shaft to eifect reciprocation of the pitman bar in this timed relation and between successive filling inserting i iovements of the shuttle. Positive control and positively effected movement of the pitman at all times is secured through the configuration of these cam surfaces.

In the operation of the loom, the cam shaft 39 continuously rotates and the cams therefore must be provided with a dwell or inactivev portion which as shown comprisees a half section, making the pitman inoperative during the period of filling inserting throw of the shuttle.

In Figure l, the parts sition they occupy after the box, unlatching the crank are shown in the pothe shuttle has left arm 12 from when the the pitman, and with the shuttle midway of its throw. The cam shaft rotates in a clockwise direction, and a quarter section D of dwell surface on cam l0 (half of the fthrow of the shuttle) has already moved past the abutment lll while a corresponding dwell section D of cam Lll has similarly moved past its abutment e5. Taking the movements of the cam in Figure lwith the shuttle thrown and midway Ythrough the shed :The second quarter section of dwell surface A on cam l0 moves past abutment la while the corresponding second section of dwell surface il on cam Lil passes over its abutment 45, leaving the pitman stationary. At the end of this dwell, the s.A .ttle enters the box at the opposite side of loom latching the vcranlr arm and pitman tl rough shaft 58 so that as the next and active quarter section B of cani f-lO at the rear side of the loom operates against its abutment elfi, this cranl: arm is moved forwardly with the pitman. This brings the cams at the end of the forward throw of section of cam Ll0, to the positions shown in Figure 5. Bur-ing the quarter revolution movement of section B of cam fr() eifecti1 c' a positive outward movement of abutm it le with its pitinan bar and connected crt il; shaft, the correspondingly receding section B of lcam all moves past the abutment i5 and permits the latter to move outwardly with the pitman bar.

The parts having thus moved to the position shown in Figure 5, continued rotation of cam shaft 39 causes a return movement of the pitm'an; i. e., as the cams now continue to rotate, the projecting quarter section C of cam ll engages abutment l5 and effects a positive rearward movement of the pitman bar. At the same time, the receding section C of cam @correspondingly moves rearwardly from its abutment Lili permitting movement thereof with the pitman bar as the latter is positively moved rearwardly through cam il. This rearward movement brings the hatten and race frame bach to its original position with its shuttle race 20 alined with the shuttle boxes as in Figure i, and is timed to terminate as the picker stick begins its movement to eject the shuttle, the lifting finger end 56a of the latch being positioned over the lower end of the trip arm 66 which Ais immediately lifted to unlatch the oranlr arm l2 from the pitman as the shuttle leaves the box.

As this returnpoint is reached in the revolution of the cams, their respective dwell sections l), A and D, A are positioned for engagement with the abutments all and Li5 respectively holding the pitman bar stationary during the next half revolution of the cam shaft during which the shuttle is thrown.

The pitman is therefore given a complete reciprocation between successive filling inserting movements or throws ot the shuttle.

lli@

the pitman reciprocating movements being `effected during :thehalfrevolutionof the.

cam' shaft `while the shuttle remains Vin a shuttle box.r.. Because of the coniiguration Yand c oaction .of the positively Vacting and receding portions of these cams, the to kand fro movement of the pitman, crank arm andA itsroclrshaft vand support-iframe, are positively 'controlled at all times. The automatic latching control efl'ected through .the physical cooperation ofthe Vshuttle with-the shuttle boxes'preven'ts movement of the batten.

and race frame'until .the shuttle has entered I a box and prevents break outs of the shuttle bypositively retainingthe intermediate race plate section in alined relation to the shuttle boxes while the shuttle is passing from box to box by releasing the frame for reciprocation tered Va box. v c Y The batten mechanism described is one that may be readily detached from the looml for repair or replacement; ithas the double fune tion of beating up the illingand combing only after the shuttle has en.

, the warp shed resulting in a liner product free v'from the imperfections caused by mats, the automatic shuttle control of its actuating mechanism obviates the possibility of break o`uts;v and thepositive control of timing. im. i f,

The provision. of a straight `cross beam similar to a lay beam but fixed o n theframe Withits top face cut down betweenits oppoits actuating mechanismsensures accuracy inA site'ends toLV aV plane permittinga swinging race plate to zoverlie its top face'fan'd aline with the bases or iioors Aof shuttlev boxes mounted on Vthe `tops of its opposite ends,

is not only advantageous-in: that the alinei, ment of the boxes is ensuredand maintained sincetheyare carried at opposite ends of a" straight beam, butin thatit serves as a mount for a loom-'traversing rock shaft cooperating with its opposed shuttle boxes and controlling batten and racey plate reciproeating mechanisminounted atV one side of the loom, and. serves also as p'latefpositlonlng stops. Y

While the kdescribedmechanisms represent preferable structuralV embodiments ofthe in-jV ventive thought involved, they are intended 4 as illustrative Arather thanrestrictiveof the invention.` The right is reserved, according-VV l-y,'*to make structural changes adapting the invention to conditionsof manufacture andl varying types oflooms in consonance withk the spirit of the invention and the scope of the appendedclaims.l v

WhatY I claiin,.therefore, and desire lto .se-`

cure by Letters Patent is l. In a loom, aframe, stationaryjshuttle Y boxes mounted jat opposite sides thereof in alinement, shed forming-merma filling in-y l Y serting means including a shuttle andoperatf ingl mechangismtherefor, fafrace plate extendy charge of the shuttle from a mount :for race ing '-'betweenr saidy "shuttle boxes,"f a; supportv f sf I therefor movable from 'a filling insertingpol c lsitionf.aliningsaid plate' with said shuttle .boxes toward the i fell ofthecloth A and back a batten earriedby" and moving wifthisaidsupportand race plate again to alined po.r ition,

toward and? fromittekfell in timed' relation toland between. successive'filling inserting movements of the shuttle?, and mechanism for reciprocating .said supportincluding Aa continuously reciprocating actuator, and meansforfconnectingisaid support and actuator operated by and vduring the period of occupancy; vof a shuttle box. bythe shuttle to couple said:y actuator to -said/ Support :for

jointfreciprocation thereof during said pe-V Y riod.

2.111' a loom, aY frame,.st ationary shuttle boxes'mounted at lopposite sides thereof inv alinement, shed forming means, filling in'- Y* sertingvmeans including a shuttle and Opermechanismitherefor, a race plate exaV between said shuttle boxes, a support therefor movable-from a filling inserting poating tending sition alining saidplate `with said shuttle boxes toward the fell of the cloth and yback a battenv carried by' again to alined position,

and moving with said support and racev plate,

anI actuator continuously reciprocating inf timed vrelation to :the shuttle operating mechanism', anfarm connected tosaid support,

and means for detachably latching said actushuttle' inta shuttle box and operated lto revlease said arm from the actuatorY byther d'is-,

ing inserting operation.A .y

3.V Inf a loom, shed'Vv forming means, lling inserting vvmeans' including i shuttle,

for movement therewith toward-and 'from the felll of the cloth, actuating mechanism operating intimed relation to the `shuttle opV erating mechanism l for reciprocating said frame'toward and; fromvthe fell, and means y i f forpreventingoperation `of said mechanism to move the frame prior to the entry of the shuttle in ashuttlebox. i

` Lln a loom, shed forming means, lling inserting means including stationary alined shuttle boxes, a shuttle, 'and' operating'mechanism therefor, `a race plate and batteri, a.- common supportv therefor mounted for resaid box for a ill-V f ator to saidf arm automatically operatedtov latch the armandactuator'by theentry of theA l rea shuttleboxes, a fand operating mechanismtherefor, abatten, a supporting frame`` therefor mounted ciprocating movement therewith 'toward and' v"from the fellfof the cloth and relativelyto "saidbox'es from afilling inserting position j withA they race'plate alining withy said shuttle-y lboxes, actuating mechanismbperating. in., timed relation to the shuttle operatingme'ch- -anism for reciprocating said supporttoward and` from fthe fell, vincluding'.shuttle con- *trolled-k means for` preventing operation 'of I saldi,actuating. mechanism to so move` said said boxes,'shed forming means, vfilling indriven serting means including'a shuttley and operating mechanism therefor, a race plate extending between saidv shuttle boxes, a support therefor movable from a filling inserting position with the race plate overlying the depressed face of said beam and alined Jwith said shut-tle boxes toward the fell of the cloth and baclr again to alined position, a batten Carried by and moving with said support and raceplate, actuating mechanism operating in timedrelation to the shuttle operat-` ing mechanism for reciprocating said sup-l port toward `and from the fell, including shuttle controlled means carried by said beam'and associated with the shuttle boxes thereon for preventing operation of the aotuating mechanism to reciprocate said support prior to the entry of the shuttle in a shuttle box.

6. In a loom, a frame, stationary shuttle boxes mounted thereon in alinement at op site sides thereof, shed forming means, llling inserting means includinga shuttle and operatingmechanism-therefor, a race plate extending between said shuttle boxes, a support therefor movablefrom a filling inserting position alining said plate with said shuttle boxes toward the fell of the cloth and bacl"` again to alined position, a batten carried by' and moving `with said support and race plate, a r cl: shaft upon which said support is mounted for reciprocation, a shaft rotating in timedY relation to said shuttle operating mechanism, dual complemental cams mounted thereon, a pitman bar having spaced cam engaging abutments harnessed to said shaft and cams and reoiprocated by the latter in timed relation to the shuttleV operatingV mechanism, a crank armon said roel: shaft, and means latching said pitman bar and cranlr arm together foi' reciprocation, said means being controlled and actuated through the entry of the shuttle in a shuttle box.

7. In a leoni, a batten supporting frame, a rock shaft on which said frame is mounted for reciprocation, a crank arm on said rock shaft, and power driven means for reciprocating said crank Varm comprising a power shaft, 'dual complemental cams mounted thereon in axially spacedV relation, a pitman bar guided for reciprocation to ride over said shaft and having spaced abutments aliiied with and engaged by said cams t0 effect ieciprocation therebyVV of the pitman bar, a latch movable to connect said bar and' crank arm for reciprocation and to disconneet said bar and arm, and shuttle controlled means for actuating said latch.

8. ln a loom, stationary shuttle boxes mounted at opposite sides thereof in alinement, shed forming means, filling inserting Vioneans associated Awith said shuttle boxes, a

hatten mounted between said shuttle boxes for movement relatively thereto toward and from 'the fell of the cloth, and mechanism operated in timed relation to and between tilling insertions or n'ioving said batten toward and from the fell, said mechanism including a continuously reciprocating element and means operated by the entry of .a shuttle in a Ashuttle box detachablyto connect said element and batteri for joint reciprocation.

9. ln a loom, stationary shuttle boxes mounted at opposite sides thereof in alinement, shed forming means, filling inserting means, a hatten and race plate mounted for movement in unison relatively to said shuttle boxes from a i'illing insertion position with said race plate alined with the shuttle boxes toward and from the fell of the cloth, and mechanism for reciprocating batten and race plate from said filling inserting position alined with said shuttle boxes toward and from the fell of the cloth including a continuously reciprocating element, a connector between said element and said race plate and hatten operative detachably to connect and cause joint reciprocation thereof, and means traversing the loom and cooperating with the shuttle boxes at opposite sides thereof operative to position said connector for reciprocation of the hatten and race plate responsive to the entry of a shuttle in a shuttle box.

10. Inv a loom, a stationary straight cross beam having shuttle boxes mounted on opposite ends thereof and alined thereby, shea forming means, filling inserting means associated with saidv shuttle boxes, including a shuttle and operating mechanism therefor, a batten and race plate,"a common support therefor mounted for reciprocating movement therewith toward and from the fell of the cloth from a position with the race plate overlying said beatn and alined with the floors of the shuttle boxes for filling insertion, and mechanism for so reciprocating said support between successive filling insertions conditioned for operation by the entry of a shuttle in a shuttle box and including means traversing the Yloom and cooperating with the shuttle boxes at opposite ends of said beam.

il. In a loom, stationary shuttle boxes mounted at opposite sides of the loom in alinement, shed forming means, filling inserting means associated with said shuttle boxes including shuttle and operating mechanism therefor, a batteri and race plate, a common support therefor mounted for reciprocating movement toward and from the fell of the cloth relatively toV said shuttle boxes from a position with the race plate alined with the shuttle boxes forfilling insertion, mechanism at one side of the loom for so reciprocating said support, land means for conditioning said i mechanism for operation between successive filling insertions including Ymeans travers.-

ing the loom cooperating Awith the shuttle r boxes at opposite sides thereoffand actuatedV by the entry of a shuttle in a shuttle box.

l2. In a loom, a frame, a stationary straight cross 'beam mounted thereon, shuttle boxes fixed thereon at opposite sides of the loom and alined thereby, with thetop face of said cross lbeam between the shuttle boxes depressed to a plane below the floors ofrsaidV boxes, shed formingmeans, filling inserting'l -meanfs associated with said shuttle boxes including a shuttleand operating mechanism therefor, a' batten and race plate, a common Y support therefor mounted for reciprocating movement therewith toward and from the fell ofthe cloth from a filling inserting posiV tion with the race plate overlying the depressed face of said cross beam and alined with the floors of said boxes, and mechanism' for so reciprocating said support inr timed relation to and between successive filling insertions including Vsupport reciprocatingr mechanism at one sideof the loom including means for connecting said support and mechanism for joint operation having a control- Y ling element mounted on said beam and traversing the loom, cooperating with the shuttle boxes at opposite sides thereof and actuated by tlieentry and detention of a shuttle in a shuttle box. operativelyto connect said sup'- port and mechanism for joint operation.

VGO

13. In a loom,'statioiiary shuttle boxes mounted at opposite sides thereof in alinefrom a iilling inserting position alining said plate with Vsaid boxes toward the fell of the' 4clothand back again to 'alined position, a"

batteny carried by and moving with said support, and mechanism for reci said support toward and from thefell including a continuously reciprocating element and means automatically operative'to connect said element and'support for `ioint reciprocation uponthe entry of a shuttle ina shuttle VboxV l and during its period of occupancy thereof f v, and automatically operative to disconnect said parts by the discharge of the shuttle from a box.

procating BENJAMIN n. HAHN. y

Images