US3552743A - Machine for feeding pieces of linen onto a conveyor - Google Patents

Machine for feeding pieces of linen onto a conveyor Download PDF

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Publication number
US3552743A
US3552743A US756816A US3552743DA US3552743A US 3552743 A US3552743 A US 3552743A US 756816 A US756816 A US 756816A US 3552743D A US3552743D A US 3552743DA US 3552743 A US3552743 A US 3552743A
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Prior art keywords
clamping device
linen
drum
feeding machine
edge
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US756816A
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English (en)
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Pierre Baboz
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Individual
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    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F67/00—Details of ironing machines provided for in groups D06F61/00, D06F63/00, or D06F65/00
    • D06F67/04—Arrangements for feeding or spreading the linen

Definitions

  • the present invention tends to remedy these drawbacks and has for its object a feeding machine of pieces of linen onto a conveyor comprising a clamping device carried by a movable carriage guided on rails, able to clamp the fore-edge of a piece of linen and which is displaceable with a substantially linear movement from a rest position upto'above and in the immediate vicinity of the conveyor, characterized by the fact that it comprises a driving drum located just underneath the movable carriage when it is in its rest position, and intended to be placed in the immediate vicinity of a conveyor for pieces of linen, by the fact that this driving drum is driven in rotation in an intermittent way and by the fact that it comprises further a pressing drum, located underneath the movable carriage, and
  • FIG. is a pneumatic connection scheme of the feeding machine.
  • the described and shown feeding machine - is mainly intended to bring and to position absolutely correctly the foreedge of a piece of linen such as a bed sheet or a table cloth on the entrance conveyor of an ironing machine which is generally constituted by a belt conveyor.
  • this feeding machine is able to place a piece of linen onto any type of conveyor.
  • this feeding machine is located just in front and above a stretching machine of the type described in; the French Pat. No. PV 1 15,190, which is is itself placed in front and underneath the entrance belt conveyor of an ironing machine.
  • This feeding machine comprises mainly a clamping device, intended to clamp the edge of a piece of linen, which is displaceable linearly and parallelly or tangentially to the upper side of the entrance belt conveyor of the ironing machine, of a driving drum cooperating with a pressing drum during certain parts of the working cycle and of an actuating device for the clamping device as well as of the driving and pressing drums.
  • FIG. 1 shows schematically this feeding machine when the clamping device drives the piece of linen in order to lay it onto the entrance belt conveyor 1 of an ironing machine.
  • the fore-edge of the sheet is taken into the clamping device constituted by an angle iron 2 hinged at 3 and a counterpiece 4 made in a supple and resilient material which are fixed on a movable carriage 5.
  • This movable carriage extends perpendicularly to the direction of displacement of the -c veyor I and across the whole width of the feeding machine Furthermore, this movable carriage 5 is guided in its movement by rails 6 fastened on a frame (not shown) ofthe feeding machine cooperating with rollers or guides (not shown) carried by the two lateral ends of the movable carriage 5.
  • These tans 6' extend approximately parallelly or tangentially to the upper side of the conveyor 1 along a portion of their length at least.
  • the rails 6 are linear and may, depending on the'shape of the conveyor, be rectilinear or curved.
  • the movable carriage 5 is fast with arm 7 hinged on crankshafts 8 which are themselves hinged on a lever -9 pivoted on the frame (not shown) of the feeding machine...-'A spring 10 tends to maintain the angle comprised between the levers 9 and the crankshafts 8 which are associated therewith as large as possible to maintain the movable carriage 5 on the rails 6.
  • the driving drum 1] is located parallel'to and approximately at the same height as the fore-edge of the conveyor 1.
  • This driving drum 11 extends across the whole width of the feeding machine and is located at a small distancefrom the fore-edge of the conveyor 1, which distance is, however, sufficient for it not to come into contact with this conveyor.
  • thedriving drum has an antislip coating formed for example by a layer or a sheet of rubber or of synthetic material presenting projections or appropriate formations on its outside surface, corresponding to the peripheral surface of the driving drum.
  • the pressing drum 12 is pivoted idle-between two arms 13 hinged on one and the other side of the feeding machine on the frame of the feeding machine.
  • the pressing drum is located parallel to the axis of the driving drum I1 and the dimensions of the arms 13 as well as the location of their hingeing points 14 are such that through an angular displacement of these arms, the periphery of the pressing drum l2v is able to be brought against the periphery of the driving drum 11.
  • These hingeing points 14 of the arms 13 are located approximately but usually slightly below the level of the axis of the lower lateral stretching drum 15, provided with helicoidal formations, of the stretching machine.
  • This stretching machine comprises further an upper lateral stretching drum 16 and two beaters l7 tending to stretch longitudinally the piecebeing of linen being handled.
  • a plate 18 cone connects the arms 13, carrying the pressing drum, along a portion of their length.
  • the'clamping device comprises further a-brush I9 angularly displaceable and located above the angle iron.2 and which can be swung in front of it onto the base of the movable carriage 5.
  • This brush is displaced between its lower and higher positions by the cooperation, during the linear displacement of the clamping device, of a roller 20 pivoted on a lever 21 fast with the brush 19, by a cam 22 fast with the frame of the feeding machine (not shown).
  • the actuating device for the feeding machine comprises:
  • a delayed relay for the closure of the clamping device RT energized through two manual control normally open contacts MP MP to be closed simultaneously by the workers using the clamping device or by a contact G2 (not shown), ac-
  • This relay RT controls an electrovalve EV which, when actuated causes the closing of the clamping device through the intermediary of a double acting jack 23.
  • the electrovalve When the electrovalve is not energized, it feeds the said jack 23 in such a way as to open the clamping device, this electrovalve having an automatic return to the initial state.
  • a delayed relay RT for the start of the forward stroke of the movable carriage 5 fed when a photoelectric cell 24 is lighted by a luminous source 25, that is by the closing of the contact G2 and of a setting contact Rt
  • This relay RT causes the delayed deenergization of a contactor CT2 feeding, in its energized state, the driving motor 24 for the rotation of the driving drum 11.
  • This motor 24 is connected to the drum 11 by a chain or belt connection for example.
  • This relay RT feeds further with a delay the electrovalves EV2 and EV3 when the delayed contact Rt of the relay RT and the end stroke contact G1, closed when the pressing drum 12 is in rest position (FIG. 2), are also closed which causes on the one hand the feeding of the jack 25 connected to the arms 18 by a crankshaft 26 so as to displace the pressing drum from its rest position (FIG. 2) up to its service position (FIG. 3) and on the other hand the feeding of the jack 27 connected to the levers 9 of the clamping device by means of a crankshaft 28 to displace the clamping device from its rest position (FIG. 2) up to its forward end stroke position (FIG. 3).
  • this relay RT4 When this relay RT4 is fed, it causes the delayed energization of the electrovalve EVS which controls, through the intermediary of the jack 25, the return of the follower drum 11.
  • this relay RTS When this relay RTS is fed, it causes the delayed energization of the electrovalve EV4, provided the relay RT is energized, controlling thus the jack 27 to effect the return stroke of the movable carriage 5.
  • FIG. 2 shows the position at the start of the a cycle of the feeding machine.
  • the clamping device is open, the brush is raised, the movable carriage is in retracted rest position, the pressing drum is in rest position and the motor of the driving drum is not actuated.
  • a bed sheet A the fore-part of which is already in the ironing machine, is still engaged by its rear part in the stretching machine and cuts the light rays emitted by the luminous source 25.
  • the new sheet B falls between the drums 15, 16 of the stretching machine and is passed through the heaters and is stretched and rendered flat longitudinally as well as transversely while its fore-edge is maintained in the clamping device.
  • the photoelectric cell again does not receive light rays and the contact Ce controlled by this cell returns to the rest position.
  • the movable carriage 5 displaces forwardly after a" time determined by a delay started by the shadowing of the photoelectric cell.
  • the pressing drum 12 is displaced up to its active position and clamps the sheet B against the driving drum. At this time, the motor of the driving drum is deenergized so that this drum is driven in rotation by the traction on the sheet by the clamping device which displaces towards the ironing machine.
  • the clamping device At a given moment of the forward stroke of the clamping device, located between one-fourth and three-fourths of this stroke for example, depending on the relative speeds of the movable carriage and of the conveyor 1, the clamping device is opened since the contact G2 is actuated by the movable carriage.
  • the position of the opening of the clamping device with respect to the stroke of the carriage is determined so that the new sheet B comes to rest just behind the rear edge of the foregoing sheet A.
  • the brush 19 falls onto the sheet B just behind the clamped edge.
  • the driving drum which is still not driven retards the sheet and the movable car riage continuing its stroke the fore-edge of the sheet is extracted outside the clamping device and is flattened by the stretching action of the brush 19.
  • the sheet B is then driven by'the conveyor 1 and the driving drum 11 to be introduced into the ironing machine and extracted from the stretching machine.
  • the-speed of the driving drum is such that the sheet will be driven at a linear speed at the most equal to that of the conveyor to avoid any folding of the forepart of the sheet B.
  • the movable carriage stops'at the end of its fore stroke, the jack which controls it being at end of its stroke, and its return to rest position is controlled by a delayed contact of theroller contactor 6,.
  • the pressing drum When thesheet is drivenby thedrying or ironing machine and can no longer be pulled backward by the stretching machine, .the pressing drum returns to its rest position. The time duringwhich the pressing drum is applied against the driving drum is detennined by a sufficient timing to insure the driving of the sheet by the ironing machine.
  • the stopping of the motor of thedriving drum is ensured by the detection by the photoelectric cell of the absence of sheets in the stretchingmachine.
  • an entrance conveyor for the sheets up to the clamping device in its rest position.
  • This entrance conveyor may be controlled either by a sheet feeler near its end orby the automatic cycle of the feeding machine or by the two mean's'combined.
  • the base of the movable carriage 5 has to be sufficiently large for the workers to be able to place the edge of the sheet within the clamping device.
  • this length of the carriage 5 may be inconvenient when the speed of the conveyor is much higher than that of the carriage and the sheet has to be laid very l close to the end of the stroke of the carriage.
  • the stroke of the clamping device after its opening is not sufficient to extract the sheet from said clamping device.'ln this case it is possible to provide for a part of the width of the carriage to be retractable at the time when the clamping device is opened to enable the sheet to fall nearly instantaneously onto the conveyor.
  • the clamping device may be actuated each by a flap hinged or or mounted resiliently on the clamping device itself. In this manner the workers placing the fore-edge of the sheet within said clamping device may at the same time and with the same movement cause the closing of the clamping device.
  • This clamping device may comprise a resilient coating on its upper part 2 coming into contact with the piece of linen. Further, this upper part 2 of the clamping device may advantageously be formed in two halves having a width approximately equal to half of the widthof 'thefeeding machine.
  • control of this stretching movement can be effected by the control cycle of the feeding machine through the intermediary of electrovalves and double, acting jacks which after the clamping device has been openedreplace opened replace also the angle irons 2 in the starting. position of the cycle, that is to say close the one onto the other. 1
  • connection between the driving drum 11 and its motor 24 is a one way coupling drive (in the direction of the arrow of the drum 1]).
  • this latter is driven idly at a higher speed by the piece of linen and does not oppose a too high resistance toithe feeding of the piece of linen to avoid tearing said piece of lineni
  • the driving drum is mounted on the frame (not shown) of the feeding machine in a pivoting manner, along an arc of circle concentric to the hingeing of the pressing drum.
  • jacks are provided to adjust the height of the feeding machine and thus to permit the correct positioning in height of the drum 11 with respect to the conveyor 1.
  • the feeding machine may also comprise a transdevice carried by the carriage toclarnp the fore-edge of a piece of linen and to draw said fore-edge to a position above saidconveyor-in a forward positio n'of the carriage, said carriage having a retracted position on said rails in which said clamping device ispositioned to receive a said fore-edge of a piece of linen, a driving drum disposed beneath said carriage in said retracted position for advancing linen in the direction of the conveyor, means for intermittently driving said driving drum, a pressing drum also located beneath the movable carriage in said retracted position and displaceable toward and away from said driving drum selectively to press a said piece of linen against said driving drum, and means to move the pressing drum toward the driving drum to press a said piece of linen against the driving drum and to deenergize said drive means for said driving drum after said fore-edge is in said clamping device so that the pressing --drum and the driving drum rotate freely as the piece of linen is being conveyed forward
  • Feeding machine comprising an actuating device presenting a double effect jack connected to the movable carriage to provoke .its'linear displacements, a jack provoking the opening and the closure of the clamping device and a double effect jack controlling the displacements of the pressing drum.
  • Feeding machine in which the pressing drum is pivoted between two angularly displaceable arms and these two arms are connected by a plate along a portion of their length to receive the rear part of a piece of linen when its fore-edge is clamped in the clamping device and before a cycle of the feeding machine is started.
  • Feeding machine in which the lastnamed means comprises a further a photoelectric cell detecting the presence of a piece of linen and controlling the through the intermediary of a control circuit the different movements of the movable carriage, of the pressing drum, the opening of the clamping device as well as the driving of the driving drum.
  • Feeding machine in which the clamping device is constituted by a corner iron having unequal wings hinged along the edge of the greatest wing and the edge of the little wing of which is adapted to enter into contact with a counterpiccc of a supple and resilient material.
  • Feeding machine in which the clamping device comprises an upper part provided with a supple and resilient coating adapted to enter into contact with a counterpiece.
  • Feeding machine characterized by the fact that the upper part of the clamping device is constituted by two halves extending each over half the width of the feeding machine.
  • Feeding machine characterized by the fact that the actuating device comprises further a double acting jack controlling the linear displacements; in opposite direction, of the two halves in a direction parallel to the a'x'is of the driving drum.
  • the clamping device comprises furth'e'r a brush m'ounted on'the movable carriage and displaceableangularly between 'aiservice position in which it rests on the base of the movable carriage in front and parallelly to the? clamping device and a raised rest position and in which the angular displacements of the brush are controlled during the linear displacement of the carriage by the cooperation of a roller carried by the brush

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Advancing Webs (AREA)
US756816A 1967-09-08 1968-09-03 Machine for feeding pieces of linen onto a conveyor Expired - Lifetime US3552743A (en)

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FR120436 1967-09-08

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US3552743A true US3552743A (en) 1971-01-05

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US (1) US3552743A (de)
BE (1) BE720407A (de)
DE (1) DE1785303A1 (de)
FR (1) FR1550197A (de)
GB (1) GB1220713A (de)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729846A (en) * 1970-05-01 1973-05-01 Mc Graw Edison Co Laundry feeding machine
US3772808A (en) * 1972-04-19 1973-11-20 Super Laundry Mach Co Inc Flatwork feeding apparatus
US3929233A (en) * 1974-06-25 1975-12-30 Lawrence V Drace Pants hanging apparatus
US4181420A (en) * 1976-12-30 1980-01-01 Hoechst Aktiengesellschaft Development device for developing sheets of diazo copying material
DE3119574A1 (de) * 1981-05-16 1982-12-02 Herbert Kannegiesser Gmbh + Co, 4973 Vlotho Vorrichtung zum zufuehren von waeschestuecken zu einer mangel
US5349768A (en) * 1992-06-04 1994-09-27 Mitsubishi Jukogyo Kabushiki Kaisha Clamp and toothed belt conveyor for carrying linens
US5416991A (en) * 1992-01-19 1995-05-23 Ejnar Jensen & Son A/S Apparatus for feeding flatwork articles to a laundry processing unit
US5440810A (en) * 1994-03-16 1995-08-15 Chicago Dryer Company Apparatus for feeding and spreading laundry articles
US6141893A (en) * 1999-06-11 2000-11-07 Finishtech, Ltd. Laundry feeder method and apparatus
US6588815B1 (en) 1999-07-27 2003-07-08 Legendary Engineering And Fabrication, Inc. Transfer press embodying a piston-cylinder assembly to effect gripping activity
US20110158780A1 (en) * 2007-12-17 2011-06-30 Steen Nielsen Method of transferring a piece of cloth and a laundry apparatus for performing the method
US20160024706A1 (en) * 2014-07-24 2016-01-28 Girbau Robotics Machine for spreading out and loading flat clothing articles with an auxiliary device that deposits and feeds flat clothing articles on a conveyor belt

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0011403A1 (de) * 1978-10-25 1980-05-28 EJNAR JENSEN & SON MASKINFABRIK A/S Vorrichtung zum Breitstrecken und Fördern von flachen Artikeln

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1618632A (en) * 1925-03-12 1927-02-22 George R Swart & Company Inc Sheet feeder
US2906529A (en) * 1956-08-14 1959-09-29 Miehle Goss Dexter Inc Feeder for carton and the like material
US2922646A (en) * 1957-04-20 1960-01-26 Schnell Pressenfabrik Ag Heide Sheet feed apparatus driving mechanisms
US3127690A (en) * 1953-05-12 1964-04-07 Premier Laundry Inc Folding and stacking machines for articles of linen
US3309077A (en) * 1964-10-01 1967-03-14 Pearce Inc Feeding, gripping and registering mechanism and method therefor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1618632A (en) * 1925-03-12 1927-02-22 George R Swart & Company Inc Sheet feeder
US3127690A (en) * 1953-05-12 1964-04-07 Premier Laundry Inc Folding and stacking machines for articles of linen
US2906529A (en) * 1956-08-14 1959-09-29 Miehle Goss Dexter Inc Feeder for carton and the like material
US2922646A (en) * 1957-04-20 1960-01-26 Schnell Pressenfabrik Ag Heide Sheet feed apparatus driving mechanisms
US3309077A (en) * 1964-10-01 1967-03-14 Pearce Inc Feeding, gripping and registering mechanism and method therefor

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3729846A (en) * 1970-05-01 1973-05-01 Mc Graw Edison Co Laundry feeding machine
US3772808A (en) * 1972-04-19 1973-11-20 Super Laundry Mach Co Inc Flatwork feeding apparatus
US3929233A (en) * 1974-06-25 1975-12-30 Lawrence V Drace Pants hanging apparatus
US4181420A (en) * 1976-12-30 1980-01-01 Hoechst Aktiengesellschaft Development device for developing sheets of diazo copying material
DE3119574A1 (de) * 1981-05-16 1982-12-02 Herbert Kannegiesser Gmbh + Co, 4973 Vlotho Vorrichtung zum zufuehren von waeschestuecken zu einer mangel
US5416991A (en) * 1992-01-19 1995-05-23 Ejnar Jensen & Son A/S Apparatus for feeding flatwork articles to a laundry processing unit
US5425190A (en) * 1992-01-29 1995-06-20 Ejnar Jensen & Sons A/S Feeding apparatus including insertion devices for feeding flatwork to an ironer
US5349768A (en) * 1992-06-04 1994-09-27 Mitsubishi Jukogyo Kabushiki Kaisha Clamp and toothed belt conveyor for carrying linens
US5440810A (en) * 1994-03-16 1995-08-15 Chicago Dryer Company Apparatus for feeding and spreading laundry articles
US6141893A (en) * 1999-06-11 2000-11-07 Finishtech, Ltd. Laundry feeder method and apparatus
US6588815B1 (en) 1999-07-27 2003-07-08 Legendary Engineering And Fabrication, Inc. Transfer press embodying a piston-cylinder assembly to effect gripping activity
US20110158780A1 (en) * 2007-12-17 2011-06-30 Steen Nielsen Method of transferring a piece of cloth and a laundry apparatus for performing the method
US8845259B2 (en) * 2007-12-17 2014-09-30 Jensen Denmark A/S Method of transferring a piece of cloth and a laundry apparatus for performing the method
US9873975B2 (en) 2007-12-17 2018-01-23 Jensen Denmark A/S Method of transferring a piece of cloth and a laundry apparatus for performing the method
US20160024706A1 (en) * 2014-07-24 2016-01-28 Girbau Robotics Machine for spreading out and loading flat clothing articles with an auxiliary device that deposits and feeds flat clothing articles on a conveyor belt
US9657434B2 (en) * 2014-07-24 2017-05-23 Girbau Robotics Machine for spreading out and loading flat clothing articles with an auxiliary device that deposits and feeds flat clothing articles on a conveyor belt

Also Published As

Publication number Publication date
GB1220713A (en) 1971-01-27
FR1550197A (de) 1968-12-20
DE1785303A1 (de) 1972-01-05
BE720407A (de) 1969-02-17

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