US1795300A - Doffing and donning machine - Google Patents

Doffing and donning machine Download PDF

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Publication number
US1795300A
US1795300A US263720A US26372028A US1795300A US 1795300 A US1795300 A US 1795300A US 263720 A US263720 A US 263720A US 26372028 A US26372028 A US 26372028A US 1795300 A US1795300 A US 1795300A
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bobbins
frame
bobbin
machine
spindles
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Expired - Lifetime
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US263720A
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English (en)
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Evcichjevitz Boleslav
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Individual
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H9/00—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine
    • D01H9/02—Arrangements for replacing or removing bobbins, cores, receptacles, or completed packages at paying-out or take-up stations ; Combination of spinning-winding machine for removing completed take-up packages and replacing by bobbins, cores, or receptacles at take-up stations; Transferring material between adjacent full and empty take-up elements
    • D01H9/08—Doffing arrangements independent of spinning or twisting machines
    • D01H9/10—Doffing carriages ; Loading carriages with cores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H67/00—Replacing or removing cores, receptacles, or completed packages at paying-out, winding, or depositing stations
    • B65H67/06—Supplying cores, receptacles, or packages to, or transporting from, winding or depositing stations
    • B65H67/061—Orientating devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • Fig. 1 is a front elevation of the improved doffing and donning apparatus.
  • Fig. 2 is a vertical section, partly in elevation, of the same, the apparatusbeing shown in operative relation to the frame of the spinning machine.
  • Fig. 3 is an elevation in detail of the mechanism for deflecting the threads from above the filled bobbins, preparatory to dofiing said bobbins.
  • Fig. 4. is a plan of the same.
  • Fig. 5 is a detail in side elevation and partly in section of the frames for operating the thread deflector and the doffing mechanism.
  • Fig. 6 is a similar view showing the position of the doffing frame when elevated.
  • Fig. 7 is a view in elevation, partly in section, of the gripper carrying frame in retracted position. ig. Sis a broken View in elevation, show ing one of the bobbin grippers in open'position in full lines and in gripping or operative position in dot-ted lines.
  • Fig. 9 is a side elevation of the same.
  • Fig. 10 is a plan of the same.
  • Fig. 11 shows in front and side elevations the corrugated face of the gripper plates.
  • Fig. 12 shows a modification for the mounting of the gripper frame.
  • Fig. 13 shows another form of such mount- Fig. 14 is an elevation of a detail showing the means for advancing the empty bobbins for the donning operation.
  • Fig. 15 is a similar view of a modified form of such advancing means.
  • Fig. 16 is a detail in elevation showing'the means by which the plates for preventing 7 the means for delivering the advanced bobbins onto the spindles of the spinning machine.
  • Fig. 19 is a plan of the same.
  • Fig. 20 shows the means for automatically forcing the empty bobbins onto the spindles in the donning operation.
  • Fig. 20 is a plan of the means for automatically operatingthe hammers.
  • Fig. 21 is a plan and Fig. 21 a side elevation, partly in section, of the filler by which the empty bobbin magazine of the apparatus '5 Fig.' 24 is a similar section taken at right angles to the line of section of Fig. 24.
  • v Fig. 25 is a view-in elevation, partly in section, illustrating the means for maintaining a single delivery of empty bobbins in each chute at each operation of the apparatus.
  • Fig. 26 is a sectional view showing the means for supporting the empty bobbins in a magazine during the charging of a filled magazine into the apparatus.
  • the machine is in the form of a carriage, which can be moved on the floor by means of four wheels 1.
  • the two side Wheels are preferably larger than the end wheels, so that the entire machine admits of being steered as required.
  • the lower guide rail 4 is secured to the creel table.
  • the machine is rolled from the floor on to these guide rails on the water frame .to be operated, and then moved along the row of bobbins.
  • the guide rail 41 is provided with notches, in which there engage bolts 6 (Fig. 2) secured to a cross bar '7.
  • the bar 7 is connected with rollers gliding in grooves in two pulleys 8, and acquires the necessary reciprocating movement from a hand crank 9 by means of toothed transmission wheels 87 88 and 89.
  • the aforementioned notches in the guide rails 4 are made at equal distances from one another, so that the machine can be advanced stepwise.
  • a special device is provided, which consists in providing recesses 10 at definite points in the lower edge of the guide rail 4, a pawl 11 secured to a shaft 12 under the action of a spring 13 engaging in the said recesses. 7
  • the dofling of the full bobbins involves the following operations:
  • the thread-deflecting device is shown in Figs. 3 and 1, and is also included in Figs. 1 and 2. It consists of two levers 14 arranged one on each side of the machine, with a profiled wire 15 which spans the entire breadth of the machine (see in particular Fig. 1), and which, when the lever arms 14 descend, deflects the thread that is being guid d from the thread guide eyelet to the 301... 11 out of its normal direction.
  • the front of a frame 21, 22 which carries the gripping appliance and which is movably arranged in the machine in a direction transverse to the guide rails, and can therefore be guiled to and from the creel table (see below), is provided with projections 23, which, when the frame 21, 22 is fed forwards, press against rollers 17, and move the threadconductor in a clockwise direction.
  • the anti-ballooning separator push-off dcvicc which effects the repulsion of the antiballooning separators (Figs. 3 and l, as well as Figs. 1 and 2) consists of two single armed sectoreshaped levers 20, which are arranged one on each side of the machine beside the thread-conductors, and the pivots of which are located nearer than those of the latter.
  • this device is as follows: lVhcn the thread-conductor begins to incline, a roller 18 arranged on the second arm 16 of the lever 14 presses against the repeller 20 of the anti-ballooning separator, and constrains it to rotate in an anti-clockwise direction, as indicated in dotted lines in Fig. 3. Its end then pushes back one of the opposite anti-ballooning separators, and accordingly the group of anti-ballooning separators secured to the plate which is common to the latter.
  • Figs. 5., 6, 7, 8, 9, 10 and 11, as well as Figs. 1 and 2 show the gripping appliance, and also the means for moving it to and fro.
  • the latter consists of a movable clamping frame 21, on a front ledge 22 of which the grippers (Fig. 8) are pivotally mounted.
  • the frame runs on guide rails 24 by means of rollers 25, which are provided with grooves on their periphery.
  • the side walls of the frame glide in grooves in fulcrum brackets or standards 26 provided with rollers 27 and pawls 28.
  • a lever 29 provided with a roller.
  • This new position of the frame is shown in dotted lines in Fig. 5.
  • the new position is fixed by means of pawls 28, which engage in the corresponding recesses in the frame, and hold the same fast even when the rollers of the levers 29 leave the cams 30.
  • Each gripping appliance (Figs. 8, 9, 10 and 11, as well as Figs. 1 and 2) comprises for each bobbin two double-armed levers 31, which are pivotally connected with a ledge or bar 32, and the longer arms 31 of which are in their turn pivotally connected with one another by means of links or strips 33. The latter are in their turn pivotally attached to the front ledge 22 of the gripping frame. In this way the gripping appliances hang from the ledge 22.
  • the ledge 32 has a projection with a bore, through which a guiding bolt 34 passes and forms the central axis of the two clamping jaws.
  • the short lever arms are provided with cross pieces 35 (Fig. 9) which terminate in pivots on which the clamping jaws 36 are rotatably mounted.
  • the lower ends of the jaws are provided with counter-weights 37, which impart to them a constantly vertical position.
  • the inner side of the jaws is grooved for the purpose of better gripping the full bobbins (Fig. 11).
  • the clamping frame 21 or the ledge 22 from which the clamping jaws are suspended glides on the guide rails secured to the standards or fulcrum brackets 38.
  • the standards 88 may be raised by means of a lifting appliance and at the same time raise the frame 21 with the ledge 22.
  • the jaws 36 are moved nearer together, as indicated in dotted lines in Figs. 8 and 10, engage the full bobbins, and grip them.
  • the bobbins nipped by the gripping appliances must now be doffed from the spindles by an upward movement. This is effected according to Figs. 5, 6, 7, and also 1 and 2, by raising the gripping frame 21, with the rela- A tive position of the gripping appliances shown dotted in Fig. 8 and the. full bobbins clamped between the jaws 36 thereof.
  • the lifting appliance for the frame 21 consists of a cam disc 39 (Figs. 1 and 2) which is rotated by the common hand crank 9 by means of the toothed transmission wheels 87 88, 89, and 91.
  • a cam disc 39 (Figs. 1 and 2) which is rotated by the common hand crank 9 by means of the toothed transmission wheels 87 88, 89, and 91.
  • To the upper end of the lever arm 40 is secured the end of a chain 41.
  • This chain passes round a chain-roller 42 and according- 1y rotates the shaft 43 of the latter, upon which are mounted chain-rollers for the chain 44 connected with the standards 38 (Figs. 5, 6 and 7
  • counter weights 92 are provided.
  • the frame 21 rises, and pulls the full bobbins off the spindles. This upward movement lasts until the lower edges of the bobbins have risen above the upper spindle points.
  • the pawls 28 then strike against abutments 45 secured in the upper part of the machine frame and release'the grippingappiiances out of the plane of the spindles 111 an outward direction relatively to the water frame and sets the released spindles free to have empty bobbins mounted upon them.
  • the clamped bobbins must now be released and collected in a suitable receptacle.
  • the frame 48 slides on to the guiding rails secured to the machine frame, and therefore cannot be raised.
  • the frame serves to keep the clamping jaws open in their lower position, that is, their initial position until the commencement of the upward movement. Since the clamping aws must approach the full bobbins in an open condition, the frame 48 must also approach the bobbins. This is effected by means of two fingers 49 which are secured to the front ledge 22 and which carry the frame 48, 4? along with them in the forward movement of the frame 21, 22.
  • the fingers 49 leave the frame 47, 48, and the latter is set free and returns to its original Since, however, the frame 21, 22 is also set 1 iii free :from the pawls 28 in its highest position and returns under the action of the spring 46 into its starting position in rela tion to the vertical axis :of the machine, the ledges 32., during the descent of the frame 21, 22, meet the front ledge 47 of the frame 48 in their correct position.
  • Both the frames 21, 22 and 47, 48, according to Figs. 5 and 6, run on their guide rails by means of rollers. They can, however, according to Fig. 12, glide in a groove, or according to Fig. 13 glide on a ledge against which they are pressed by rollers.
  • the present auxiliary machine must also effect the filling of the freed spindles with empty bob-- bins. For this purpose the following operations must be carried out:
  • the empty bobbins are placed in a magazine arranged in the upper part of the machine.
  • the magazine consists of a number of compartments (Figs. 1 and 2) wl ich each comprise a channel bottom 51 below and two side ledges 52 above.
  • the emptybobbins form in each compartment of the magazine a row, the central plane of which is coincident with the axes of the spindles to be filled.
  • a thrust plate 54 presses against the row of bobbins, and in front the row is shut oil by a pusher or slide 55 (as shown in Figs. 14 and 15, as well as in Fi 1 and 2)
  • the thrust plate '54 is secured to a carriage with rollers 56, which run on rails 57.
  • the channel 51 has an inclination forward. It may, however, be horizontal instead.
  • a roller carriage on a horizontal rail, there is also provided a roller carriage, with the thrust plate 54, which is subject to the action of another thrust plate. The latter is then connected with a carriage running on the inclined rail.
  • each compartment of the magazine has a vertical guiding channel 59 and a pusher shown in Figs. 16 and 17.
  • the guiding channel 59 has a radius of curvature which is about equal to that of the empty bobbin, so that the bobbin entering the channel is located at about the geometrical axis of the spindle to be filled.
  • the pushers 55 of all the magazine compartments are secured to a cross bar 61, as shown in Figs. 16, 17, 18 and 19, which has at its end a roller 62. This roller runs in a slot in a vertical guide rod 63, and controls the horizontal reciprocation of the pushers 55.
  • the guide rod 63 is so constructed that during its upward movements the roller 62 is guided to the left and back by pivotally and resiliently secured flaps 64, .as shown in Fig. 16, while during the downwand movement it remains in its normal position.
  • the guiding channel 59 is arranged a vertically movable guiding passage 67, which has an elongated notch for the tongue 65 and permits the up-and-down movement without action upon the latter.
  • the guiding passage 67 has a projection 69, which bears against the gripping frame 21, 22, and is raised during its upward movement. As soon, however, as the frame upon contact with the projection 45, is horizontally displaced, the guiding passage 67 falls down again. For the sake of smoother movement the guiding passage 6? is provided with a counter-weight 70. as shown in Fig. 1.
  • the tongues 65 of all the magazine compartments are secured to a common ledge 66. which executes a horizontal reciprocating movement under the action of a spring 71. and of the oblique upper edge of a vertical guiding rod. In this manner the tongue is moved out of the guiding channel 59 or introduced into the latter, and accordingly lets the empty bobbin located therein drop down at the necessary moment. The bobbin now passes through the guiding passage and mounts itself upon the spindle.
  • the number of guiding channels and passages corresponds of course to the number of spindles to be simultaneously served.
  • the girder 77 spans the breadth of the machine and is secured to the two levers 7 8 arranged one on each side, which are held in their raised position by a pawl 79.
  • a cam 80 strikes againstthe other end of the pawl 7 9, the lever arms 78 become free and the hammers 74 strike the bobbins mounted upon the spindles.
  • the lever 78 is brought back into its initial position'by a cam 81.
  • the front and rear walls 86 of the box 85 are displaceable.
  • the box is filledwith bobbins and inserted in the magazine; Thereupon the front and rear walls 86are pushed out.
  • Figs. 23 to 26 show a different constructional form of the device forfilling the spindles with 'em'ptybobbins.
  • This device involves the following operations 1. The formation of a store of bobbins at least for one change of the set of bobbins.
  • Thelemptybobbins in reserve are storedinl the compartments 98 of the magazine93 in the'upper part of the machine frame in'a horizontal position, as shown'in Figs. 23 and 26..
  • each magazine compartment is provided with notches and ,is slidably arranged. I notches are so positioned that the set of bobbins from each magazine compartment descends, and the lowest bobbins take up their positions upon the pushers 95, 96, which are secured to a horizontally reciprocable'frame During the movement of'the frame 97 towards the right, the pushers 95 come out of the magazine compartment and the pushers 96 are introduced into it. The entire set of spindles then descends and bears upon the pushers 96.” During the movementof the frame'towards the left, the last bobbin but one is shutoff by the pushers 95 and the lowest bobbin set free.
  • the reciprocation of the frame 97 is effected by the oblique edge, which is secured to the rising part of the machine.
  • the edge 99 presses against the roller 101 of the frame and displaces the latter towards the left.
  • the roller returns under the action of the spring 102 and slides the frame towards the right.
  • the bobbins are arranged horizontally in the magazine compartments. Upon being released the freely falling bobbin strikes against the corner 106 of the guiding cham- By suitable displacement, the
  • the bobbin which is now vertically posi tloned passes into a guidlng aperture 108 and falls freely for a time, until it arrives in T a guiding passage 110, as shown in Fig. 23.'
  • the guiding passages must beraised duru ing the dotting. F or this purpose all the guiding passages are mounted in a ledge-111, as shown in Fig. 23, which is vertically guided on guide rods 112.
  • the ledge 111 may be raised by means 'of chains 118 and chain-rollers 114 and 115 by a shaft 116 during the rotation of the latter.
  • the rotation of the shaft is elfected by a lever 119, the short arm 118 of which is provided with a roller 117.
  • a notch in a disc 120 is effected the adjustment of the lever 119 into the position shown in dotted lines in Fig. 23, and this produces, by means of the chain 113 passing ronndthe pulley 115, the rotation of the shaft 116 and the raising and lowering of the guiding passages 110.
  • a set consisting of a predetermined number of bobbins can be changed at'once, and the machine for serving a row of spindles comprising in the usual manner about two hundred and forty bobbins must be shifted in steps.
  • the auxiliary machine can be built for a considerably larger set of bobbins, even for the entire breadth of the water frameif desired, and in thelatter case need not be movable, but may be se cured to the water frame.
  • the drive for the machine serving the entire table of spindles may not be effected by a hand crank but a drive preferably mechanically actuated.
  • the spindles of spinning machines including a carr age, meansfor guidably supporting the carrlage on the frame of the splnning 1.
  • a dofling and donning apparatus for .thespindles of spinning machines includvinga carriage, means for-guidablysupport- :ingthe carriage on the frameof thespinning machine, grippers'for the filled bohbins, means whereby the grippers maybe -inoved to a position to'engage" the bobbins, .means for causing-the.
  • grippers -to grip the bobbins means for raising,theigrippers'with .thefilled bobbins to a, plane above'the ⁇ spinedles of the spinning 'machine, ;means for .opening the grippers to release the filled bobbins, a thread defleetor operative: ini the advancing movement of the grippers-to :defleet the thread from above the-filledspindles into a planebeyondreach ofthe grippers, and an anti-ballooning push-off device oper- :ating in the movement of the thread-defiec- -.-tor-to repel the anti-ballooningseparators'of the spinning Tmachine.
  • gripperfor each-bobbin two frames'arranged' in.- superimposed relation on the carriage, ineans'for ad *ancing said 1 frames simultaneouslynin i horizontal direction-130i ard the filled bobbins
  • gripper operating mechanism connected to .the :re- ⁇ spective frames" and movable i therewith i to position the grippers in proper-*relatiomto the filled bobbin, means for elevatingvthe uppermost frame-to causehthe grippers to embrace the filled -bobbin anchsimultaneouslyf lift said bobbinfromthe spindle, and means for lowering theuppermostiframe to release the gripper cooperation mvith the filled bobbin to free said bobbin.
  • a idoffing and donning apparatus-for the-bobbins of spinning machines including a carriage movable lengthwise the. .frameof 1 the spinning machine, dofi'ing l11Cl1lI1lSm'- ln .cluding frames movable transversely ofithe carriage to a position above the bobbins tobe dolfe'd, gripper .mechanism carried by said :frames including ,grippers to be :positioned on opposite sides oftheibobbin tobe defied in the transverse movement of the frames, means .forulocking the .frames in operative .-'position,:-and"means for elevating one ofthe frames with respect 'tothe other to-causeithe gri ping elements -to engage the filled L-bob in.
  • Adofling and. donning apparatus for the -bobbins of spinning machines includinga carriage-movable lengthwise the frame of the-spinning machine, dofiing mechanism inv eluding. frames imovable transversely of the carriage to. a; position above the -bobbinsito :be .doffed; gripper mechanism carried by said frames including grippers to be positioned onopposite sides of the'bobbin to be doffed in the transverse movement of 1 the 1 frames, r means -.-for; locking the framese-in operative position, -Jneans -forelevating one of "the frames with respect to. the other to.
  • the gripping elements to engagesthefilled bobbin, means for re'leasing the. lock oftheprojected frame at the limit ofu pward move- .-1nent of-said frame, and .means i to automaticallyjreturn the frame to .inormal -position, said framezin its return movement releasing the cooperation-of the gri-ppingelcments on .tl1e filled ibobbin to. free the bobbin.
  • the mag- -azine,-.means. for reciprocating the .guide means for operating the bobbin holding meansnin the imovement of the ,..gui.de to I thereby Tf-reetheffo'remostbobbin, imeansffor releasing-the foremost.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US263720A 1927-09-09 1928-03-22 Doffing and donning machine Expired - Lifetime US1795300A (en)

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DE1795300X 1927-09-09

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US (1) US1795300A (enrdf_load_stackoverflow)
DE (1) DE483502C (enrdf_load_stackoverflow)
FR (1) FR644545A (enrdf_load_stackoverflow)
GB (1) GB304221A (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449742A (en) * 1944-11-30 1948-09-21 British Cotton Ind Res Assoc Method and apparatus for doffing spinning frames and the like
US2726505A (en) * 1953-06-02 1955-12-13 Goodyear Tire & Rubber Yarn handling apparatus
US3103096A (en) * 1957-01-05 1963-09-10 Escursell-Prat Roberto Automatic doffing and donning apparatus
US3121988A (en) * 1962-10-05 1964-02-25 Draper Corp Positive feed for donning mechanism
US3164946A (en) * 1963-07-15 1965-01-12 Willcox & Gibbs Sewing Machine Doffing and donning mechanism
US3175349A (en) * 1957-01-05 1965-03-30 Escursell-Prat Roberto Doffing and donning apparatus for spinning machines
US3344594A (en) * 1963-10-31 1967-10-03 Kureha Spinning Co Ltd Autodoffing apparatus
ITMI20121517A1 (it) * 2012-09-14 2014-03-15 Salmoiraghi S P A Dispositivo automotore su monorotaia aerea perfezionato per la movimentazione verticale di carrelli in particolare per trasportare bobine di filato o similari

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE895872C (de) * 1944-11-30 1953-12-07 British Cotton Ind Res Assoc Spulenwechsel-Verfahren und -Vorrichtung fuer Ringspinnmaschinen, Zwirnmaschinen u. dgl.
DE917298C (de) * 1949-01-15 1954-08-30 Harold Partington Laengs einer Ringspinn- oder Ringzwirnmaschine schrittweise fortschaltbare und feststellbare Spulen-Abzieh- und Spulenhuelsen-Aufsteckvorrichtung
DE885224C (de) * 1950-04-20 1953-08-03 Rieter Joh Jacob & Cie Ag Vorrichtung zum Aufnehmen und Transportieren von Koetzern an Ringspinn- und Ringzwirnmaschinen
DE1132036B (de) * 1956-06-16 1962-06-20 Kanegafuchi Spinning Co Ltd Vorrichtung zum kontinuierlichen Abziehen der vollen Koetzer an Ringspinnmaschinen und Ringzwirnmaschinen
DE1162735B (de) * 1960-06-30 1964-02-06 Robert Escursell Prat Vorrichtung zum aufeinanderfolgenden Auswechseln voller Spinnhuelsen gegen Leerhuelsen an Ringspinnmaschinen
CN106498576B (zh) * 2016-12-28 2019-01-29 荣德明 一种精纺落纱机压纱装置
CN115561412B (zh) * 2022-10-08 2023-05-05 哈尔滨海涵丰生物科技开发有限公司 一种药品自动检测装置

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2449742A (en) * 1944-11-30 1948-09-21 British Cotton Ind Res Assoc Method and apparatus for doffing spinning frames and the like
US2726505A (en) * 1953-06-02 1955-12-13 Goodyear Tire & Rubber Yarn handling apparatus
US3103096A (en) * 1957-01-05 1963-09-10 Escursell-Prat Roberto Automatic doffing and donning apparatus
US3175349A (en) * 1957-01-05 1965-03-30 Escursell-Prat Roberto Doffing and donning apparatus for spinning machines
US3121988A (en) * 1962-10-05 1964-02-25 Draper Corp Positive feed for donning mechanism
US3164946A (en) * 1963-07-15 1965-01-12 Willcox & Gibbs Sewing Machine Doffing and donning mechanism
US3344594A (en) * 1963-10-31 1967-10-03 Kureha Spinning Co Ltd Autodoffing apparatus
ITMI20121517A1 (it) * 2012-09-14 2014-03-15 Salmoiraghi S P A Dispositivo automotore su monorotaia aerea perfezionato per la movimentazione verticale di carrelli in particolare per trasportare bobine di filato o similari
WO2014041475A1 (en) * 2012-09-14 2014-03-20 Salmoiraghi S.P.A. Improved self-propelled device on overhead monorail for the vertical movement of carriages in particular for transporting yarn bobbins or the like

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FR644545A (enrdf_load_stackoverflow) 1928-10-09
DE483502C (de) 1929-10-09
GB304221A (en) 1929-01-17

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