US2077525A - Pneumatic safety device for thread working machines - Google Patents

Pneumatic safety device for thread working machines Download PDF

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Publication number
US2077525A
US2077525A US53683A US5368335A US2077525A US 2077525 A US2077525 A US 2077525A US 53683 A US53683 A US 53683A US 5368335 A US5368335 A US 5368335A US 2077525 A US2077525 A US 2077525A
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United States
Prior art keywords
chamber
thread
pressure
outlet
machine
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US53683A
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English (en)
Inventor
Mennesson Marcel Louis
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Solex SA
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Solex SA
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Publication date
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Publication of US2077525A publication Critical patent/US2077525A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • B65H63/032—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic
    • B65H63/0328—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using pneumatic sensing means
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S177/00—Weighing scales
    • Y10S177/07—Pneumatic controls
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S33/00—Geometrical instruments
    • Y10S33/02—Air

Definitions

  • the present invention relates to pneumatic safety devices for machines for the treatment of threads, or the like, of the kind in which the absence of a thread produces, due to an escape of fluid, a variation in the pressure of said fluid in a chamber.
  • the invention is more especially, although not exclusively, concerned with machines of this kind adapted to work on threads, yarns,
  • the object of the present invention is to provide a device of the kind above referred to which, while occupying but little space, is capable of controlling, in a safe and efllcient manner, the work'- ing of the machine with which it is associated.
  • the essential feature of the present invention consists in providing the chamber containing the fluid under pressure as above stated with at least one outlet adapted to cooperate with a corresponding valve adapted to be controlled by at least 20 one thread, yarn, or the like, and in fitting said chamber with an element, either deformable or movable, which under the influence of a drop of the pressure in said chamber resulting from the opening of said valve, is capable either of stop- 25 ping the machine or of operating a signal through an electric or pneumatic relay.
  • Fig. 1 is a diagrammatic sectional view of a 35 device made according to a first embodiment of the invention
  • Fig. 2 is a sectional view of a modification of a part of this device
  • Figs. 3 and 4 are views similar to Fig. 2, relat 40 ing to two other modifications, respectively;
  • Figs. 4a and 4b diagrammatically show, in vertical section on the line X'X of Fig. 4b and in plan view, respectively, a modification of the arrangement of Fig. 4;
  • Fig. 5 is a diagrammatic sectional view of a device according to the present invention.
  • Fig. 6 is a similar view of a device made according to a third embodiment of the invention.
  • Fig. '7 is a diagrammatic sectional view of the eombination of several devices according to the invention so as to control a single electric relay;
  • Fig. 8 is a diagrammatic sectional view of a similar arrangement;
  • Fig. 9 is a view similar to Fig. 8, showing a M modification;
  • Fig. 10 is a similar view showing a device according to the present invention, equipped with a pneumatic relay.
  • the word thread will be employed to designate any elongated material, obtained by drawing, extrusion, or otherwise, such for instance as a thread, yarn, wick, portion of a wick, combination of wicks, made of a textile, metallic, or other material.
  • the device according to the present invention includes a chamber l communicating, through an orifice or passage of restricted section 2, with a conduit 3 connected with a reservoir containing a gaseous fluid under pressure, for instance compressed air, at uniform pressure, or at a pressure variable within certain limits.
  • a gaseous fluid under pressure for instance compressed air, at uniform pressure, or at a pressure variable within certain limits.
  • This chamber is further provided with at least one outlet 4 through which it can communicate with the atmosphere.
  • chamber I communicates,through a conduit 5, with a casing 6, in which is fitted a membrane 1 (or a. piston) upon the internal face of which the pressure existing in chamber I can act, while the atmospheric pressure acts on the external face of said membrane.
  • a membrane 1 or a. piston
  • This membrane 1 is caused to act; for instance through a. rigid push-piece 8, on a control organ 9, for instance an oscillating lever, which acts either directly or indirectly, for instance through an electric relay, not shown in Figs. 1 to 7, fed with current through a contact Hi.
  • This control organ 9 is thus capable of producing a modification of the working of the machine, or even the stopping thereof or of a portion thereof. It may also, according to the invention, operate an optical, acoustic, or other signal which permits of finding immediately the part of the machine where a fault in the working has occurred.
  • this control organ 9 is such that it is in the inactive position when the pressure in chamber l is normal. On the contrary, when this pressure drops, membrane (or piston) l moves downwardly and brings the cooperating elements of contact Ill together.
  • the outlet orifice 4 of chamber is closed, in the example of Fig. 1, by a stopping device ll, such as an oscillating valve provided with a counterweight l2, upon which passes generally a single thread l3, either before or after the passage of said thread through the machine in which said thread is utilized.
  • a stopping device ll such as an oscillating valve provided with a counterweight l2
  • I may, in some cases, cause several threads, for instance two, or on the contrary only a portion of a thread, for instance one half of a wick,
  • valve element H Due to the tension, weight and friction oi. the thread, valve element H is held upon its seat with a strength suflicient for overcoming the pressure existing inside chamber I. When the thread breaks, this action on the thread disappears. valve l l opens automatically, and the air present underplessure in chamber I- can escape freely through orifice 4. The compressed air that is fed through orifice 2 is not suflicient for restor- 6 ing the initial pressure existing in-said chamber prior to the opening of outlet 4. Consequently, hmembrane I, or the like, moves downwardly, for instance under the action oi! its own weight, or of the weight of push-piece 8, or of a return 10 spring or the like, which closes contact II. The respective positions occupied by the parts at this time are shown in dottcd'lines in Fig. 1.
  • the thread I! itself directly stops the outlet-of chamber I, beingengaged in a transverse pas- 'sage ll connected with said chamber (as' shown by l ig. 2), or being merely applied upon said outlet 4 (as shown by Fig. 3).
  • the outlet is made of such a shape and size that the thread shall eflectively stop leakage between itself and conduit II, or, at least, shall permit only losses which can be compensated by the inflow of fluid through orifice I.
  • the arrangements according to Figs. 2 and 3 are capable of workingwhen 40 it is desired to stop the machine or operate a signal when, for some reason, the sectionof the thread undergoes a sudden reduction, suflicient for creating a leakage, past said thread, which the inflow through orifice 2 is not capable ofcompensating.
  • Fig. '4 follows directly from the embodiment ,ofl 'ig. 1; with the difference that valve element Ila and the counterweight are'combined into a single piece, capable of pivoting about an axis il andwhich serves to close outlet orifice 4, for instance through a ball valve 1!.
  • -Piece lie, in which thread II is passing, forms a kind of U-shaped gutter It, the branches of which are'curved on the'inlet side so as to prevent the accumulation of matter.
  • the center 3001 gravity of thewholeis located above carryapart ltionwhichthethreadtqbc controlled is normally applied, and at least one lateral extension is, arranged in line with the lateral extension llb of the main part Ila of the active portion of an adjacent detecting de- 6 vice.
  • the threads which pass normally p n the main parts I6 and lie respectively, can, eventually, replace each other, for instance due to a crossing.v without ceasing. for this reason, to maintain the two-correspond- '10 ing detecting devices in the closing podtion.
  • optical or acoustic signal independent of the relay II, either electric or not, which is controlled y member I.
  • chine for instance by means of sleeves made ofaninsulatingmateriaLsuchasebonite.
  • a second transformer preferably identical-to the first mentioned one and advantageously including a test lamp or adjusting lamp 26.
  • the respective secondaries 21, 28 of these transformers are connected in series and arrangedin' such manner that the inducted electromotive forces are in opposition.
  • These secondaries feed current, preferably through a rectifier 29, to an electro-magnet 30- the armature 3
  • the primary 23 is not fed with current and only primary 25 is connected to the source of alternating current 24'; Alternating current is fed to rectifier 29 and to electro-magnet 30, which keeps its armature 3
  • the contacting devices 3-"! are inserted in series in the feed circuit 2
  • contact I0 is cut off (contrary to what has been'supposed up to now) which causes the electro-magnet 30 to be de-energized.
  • a test lamp I 8 may be connected in shunt to the terminals 50 of each relay 20, provided that its electrical resistance is sufiiciently high in order that, due to the cutting ofi of the circuit 2, the tension at the terminals of the electro-magnet is suiilciently reduced in order that its strength becomes lower 55 than the effect of the weight of 33.
  • the clutch 32 is controlled by a pneumatic relay 35 including ,a piston 38 both of the faces of which are subjected-to the pressure of a gaseous fluid fed by 00 a reservoir 31 to which said fluid is supplied from any suitable source, for instance a pump 38, which may be actuated by a cam 40 driven by a moving organ of the machine.
  • chamber, or chambers, I, and also chamber 31 might be fed from the same source of fluid under pressure, forinstance pump 38.'
  • control either through the same relay or through an auxiliary relay, any device for braking the machine, entering into action when the clutch is released, eitherin the manner above described, or in any other way.
  • a device for use in a machine for working threads .and the like which comprises, in combination, a casing including a chamber filled with a fluid at a pressure different from atmospheric pressure andhaving at least one outlet, valve means for controlling said outlet adapted to be operatlvely controlled by at least one thread element, so as to open when said thread is broken,
  • a device for use in a machine for working threads and the'like which comprises, in combination, a casing. including a chamber filled with a fluid at a pressure different from atmospheric pressure and having at least one outlet, a valve cooperating with sald outlet arranged to be kept in closedposition by the presence of at least one thread element worked normally in said machine,
  • a device for use in a machine ior working threads and the like which comprises, in combination, a casing including a chamber having at least one outlet opening into the atmosphere and 10 an inlet oi restricted section, means for 'ieeding fluid under pressure to said chamber through said inlet, a valve for controlling said outlet arranged tobekeptinclosedpositionbythepresenceotat least one thread element normally worked upon 15 by said machine. yielding means for opening said valve adapted to operate when said thread element is missing and a member movable in re-' sponse to variations in the fluid pressure in said chamberproduced by the opening or said valve.
  • acne yielding means for opening said valve adapted 8.Adeviceaccordingtoclaim3iurtherineludin: a second chamber havingtwo oriflces of restricted section connecting the inside of said second mentioned chamber respectively with the atmosphere and with said means for feeding fluid under pressure. and means for causing the fluid Pressure in said second mentioned chamber to act on said movable member in opposition to the action or the fluid in the flrst mentioned chamber.
  • a device further including means operative by said movable member for stopping at least one part oi said machine.
  • a device further including, signalling means, and means operative by said movable member -i'or actuating said signalling means.
  • Adevi'ce according to claim 3 further including an electric relay. a circuit for said relay, and a make'and break device in said circuit, said movable member of claim 8 constituting the active element of said make and break device.
  • a device in eluding a pneumatic relay, and means operative by said movable member tor operating said re- MARLEL N.

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  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Hydraulic Clutches, Magnetic Clutches, Fluid Clutches, And Fluid Joints (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Fluid-Pressure Circuits (AREA)
US53683A 1934-12-12 1935-12-09 Pneumatic safety device for thread working machines Expired - Lifetime US2077525A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE458956X 1934-12-12

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BE (1) BE406786A (en))
DE (1) DE657571C (en))
GB (1) GB458956A (en))

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465818A (en) * 1943-06-26 1949-03-29 Gen Electric Device for measuring fiber density of a sliver
US2486052A (en) * 1945-10-25 1949-10-25 Moore Products Co Pneumatic comparator gauge
US2500343A (en) * 1946-04-23 1950-03-14 Le Blan & Cie Soc Stop mechanism for fly frames
US2516932A (en) * 1947-04-25 1950-08-01 Deering Milliken Res Trust Pneumatic meter or the like
US2560194A (en) * 1945-08-09 1951-07-10 John A Simkus Pneumatic type opposed contact gauge
US2560883A (en) * 1948-06-26 1951-07-17 Applic Et De Const Pour Materi Device for measuring or checking a transverse dimension in a piece of indefinite length
US2605535A (en) * 1948-01-31 1952-08-05 Deering Milliken Res Trust Monitoring device
US2634081A (en) * 1948-10-29 1953-04-07 Pneumatic Scale Corp Weighing machine
US2634080A (en) * 1948-10-29 1953-04-07 Pneumatic Scale Corp Weighing machine
US2704430A (en) * 1950-11-22 1955-03-22 Pneumafil Corp Control for the operation of roving frames
US2860507A (en) * 1954-12-28 1958-11-18 Gen Electric Area measuring gage
US2910862A (en) * 1955-07-06 1959-11-03 Corning Glass Works Linear body gauging
US3159028A (en) * 1961-02-15 1964-12-01 Beloit Corp Sheet break detector
US3413794A (en) * 1967-03-28 1968-12-03 Leesona Corp Pneumatic sensing system
US3438244A (en) * 1965-08-23 1969-04-15 Brunswick Corp Fluid measuring gauge
US3911657A (en) * 1969-08-04 1975-10-14 Leesona Corp Textile machine

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1135807B (de) * 1960-12-17 1962-08-30 Joseph E Makant Stillsetzvorrichtung fuer die Spindeln von Zwirnmaschinen
DE1192085B (de) * 1961-11-29 1965-04-29 Ernst Breuning Dr Ing Vorrichtung zum UEberwachen von Faeden und Faserbaendern an Spinn- und Zwirnmaschinen u. dgl., insbesondere Vorspinnmaschinen

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2465818A (en) * 1943-06-26 1949-03-29 Gen Electric Device for measuring fiber density of a sliver
US2560194A (en) * 1945-08-09 1951-07-10 John A Simkus Pneumatic type opposed contact gauge
US2486052A (en) * 1945-10-25 1949-10-25 Moore Products Co Pneumatic comparator gauge
US2500343A (en) * 1946-04-23 1950-03-14 Le Blan & Cie Soc Stop mechanism for fly frames
US2516932A (en) * 1947-04-25 1950-08-01 Deering Milliken Res Trust Pneumatic meter or the like
US2605535A (en) * 1948-01-31 1952-08-05 Deering Milliken Res Trust Monitoring device
US2560883A (en) * 1948-06-26 1951-07-17 Applic Et De Const Pour Materi Device for measuring or checking a transverse dimension in a piece of indefinite length
US2634080A (en) * 1948-10-29 1953-04-07 Pneumatic Scale Corp Weighing machine
US2634081A (en) * 1948-10-29 1953-04-07 Pneumatic Scale Corp Weighing machine
US2704430A (en) * 1950-11-22 1955-03-22 Pneumafil Corp Control for the operation of roving frames
US2860507A (en) * 1954-12-28 1958-11-18 Gen Electric Area measuring gage
US2910862A (en) * 1955-07-06 1959-11-03 Corning Glass Works Linear body gauging
US3159028A (en) * 1961-02-15 1964-12-01 Beloit Corp Sheet break detector
US3438244A (en) * 1965-08-23 1969-04-15 Brunswick Corp Fluid measuring gauge
US3413794A (en) * 1967-03-28 1968-12-03 Leesona Corp Pneumatic sensing system
US3911657A (en) * 1969-08-04 1975-10-14 Leesona Corp Textile machine

Also Published As

Publication number Publication date
BE406786A (en))
DE657571C (de) 1938-03-08
GB458956A (en) 1936-12-30

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