US2796085A - Pump and nozzle system for nozzle operated weaving looms - Google Patents

Pump and nozzle system for nozzle operated weaving looms Download PDF

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Publication number
US2796085A
US2796085A US430689A US43068954A US2796085A US 2796085 A US2796085 A US 2796085A US 430689 A US430689 A US 430689A US 43068954 A US43068954 A US 43068954A US 2796085 A US2796085 A US 2796085A
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US
United States
Prior art keywords
nozzle
piston
pump
liquid
bore
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
US430689A
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English (en)
Inventor
Svaty Vladimir
Mohelnicky Josef
Zahradnik Stanislav
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.)
MIRA ZD Y NA PLETENE A STAVKOV
Original Assignee
MIRA ZD Y NA PLETENE A STAVKOV
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority to NL186595A priority Critical patent/NL84616C/xx
Priority to FR1112023D priority patent/FR1112023A/fr
Application filed by MIRA ZD Y NA PLETENE A STAVKOV filed Critical MIRA ZD Y NA PLETENE A STAVKOV
Priority to US430689A priority patent/US2796085A/en
Priority to US642880A priority patent/US2855959A/en
Application granted granted Critical
Publication of US2796085A publication Critical patent/US2796085A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/1037—Flap valves
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B23/00—Pumping installations or systems
    • F04B23/02—Pumping installations or systems having reservoirs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/121—Lost-motion device in the driving mechanism
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B5/00—Machines or pumps with differential-surface pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
    • F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
    • F04B9/06—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means including spring- or weight-loaded lost-motion devices

Definitions

  • the present invention relates to a pump and nozzle system for nozzle operated weaving looms.
  • the piston pump according to the present invention in combination with a suitable nozzle, the said pump being provided with a pressure spring which controls the movement of a piston in the direction of discharge of the liquid.
  • This arrangement oers certain advantages over pumps in which both the suction stroke and the discharge stroke are controlled by a cam.
  • the course of pressure of the liquid in the discharge channel, subject to the influence of a spring, the characteristic of which has a decreasing tendency, is advantageous in particular insofar as the column of liquid, projected from the nozzle has at its leading end a higher velocity than at its rear end.
  • a part of the energy of the leading portion of the column is utilized for accelerating the thread, and in the course of its movement along the trajectory the velocity of the leading portion is diminished by air friction, so that the velocities of the leading and back portions of the liquid column become partially equalized.
  • An advantage of the pump according to the invention resides further in the fact that the course of pressure of the liquid in the discharge portion remains practically unchanged upon a change of revolutions of the weaving loom.
  • the pump for nozzle operated weaving looms is, according to the invention, further combined with a liquid nozzle, which in the course of the picking operation allows the weft to be passed through the shed by means of a small column of liquid travelling with a high velocity, the arrangement being such, that the speed and degree of opening and closing the nozzle mouth, which determines the shape of the liquid jet, may be controlled by a change in the pressure of the liquid in the space of the nozzle body in front of its mouth.
  • Fig. l shows in a longitudinal axial section a piston pump for a nozzle operated weaving loom.
  • Fig. 2 is a similar section of the nozzle
  • Fig. 3 is a cross sectional view of the nozzle along the line III-III of Fig. 2.
  • a container 2 with an inlet port 3 for the liquid and filter 4 is mounted above the pump cylinder 1.
  • a plunger-like piston 5 is arranged for reciprocal movement States Patent Patented June 18, 1957 "ice 2 in the cylinder 1, said piston carrying at its open upper end a plate 6 and at its bottom rod-like end a shoe 7, biassed by means of a helical spring 8 by the intermediary of the plate 6 and piston 5 against a cam 9, revolving in the direction of the arrow S.
  • the position of the shoe 7 with respect to the cam 9 is adjustable by changing the length of the link 10, projecting with its bottom end into a cavity 11 in the piston 5 and provided at its upper end with a thread and nut 12, bearing against a disc washer 13 mounted at the end of a hollow pin 13.
  • a hose 16 of resilient material e. g. rubber, is mounted in sealing engagement with the link 10 and with a tubular extension 14 of the lid 15 of the container 2.
  • the tubular extension 14 is closed at its open lower end by a plug 16', to which is secured the lower end of the hose 16 so as to assure perfect sealing.
  • a tube 17 connects the pump cylinder 1 with the body of a throttling valve 18 and a check valve 19, controlled by a spring 20.
  • the arrow V shows the direction of flow of the liquid, discharged by the pump through a connecting pipe 30 to the body 32 of a picking nozzle, and the arrow P indicates the direction of supply of liquid into the container from a mains or other suitable pipeline.
  • the cam- 9, revolving in the direction of the arrow S lifts periodically the piston 5 to its extreme upper position. Vacuum is thus produced in the space 23 under the plunger-like portion of the differential piston 5, said vacuum causing the liquid to be sucked in from the container 2 through the connecting channel 24 into the space 23.
  • the shoe 7 slips o the highest portion of the cam ramp in a position shown in Fig. 1, causing the piston 5 with the plate 6 to be displaced under the pressure of the spring 8 into its lowermost position, shown in the drawing.
  • the liquid which has been sucked in is thus discharged from the space 23 through the tube 17 and throttling valve 18 against the pressure of the spring 20, through the pipe 30 into the body 33 of the nozzle.
  • the volume of liquid, measured off for each picking operation, is continuously adjustable by changing the stroke of the piston 5.
  • the movement of the piston to its extreme upper position is constant and is determined by the height of the cam 9, whereas the stroke of the piston to its lower end position is adjustable by rotating the nut 12 so as to alter the length of the link 10.
  • the pump may be actuated by hand, if required (without the cam 9 being driven), by means of the hand lever 21, the fork end 21 of which is adapted to lift the hollow pin 13, link 10 and piston 5.
  • the picking nozzle according to Figs. 2 and 3 consists of two members inserted one into the other, namely of an inner conical member 31 and an outer cylindrical member or body 33, the two members being connected together into one unit by a cap 32.
  • the body 33 of the nozzle has a conical recess, the wall of which is provided with longitudinal grooves 40 between the corresponding toothlike ribs.
  • the apex of the cone 31, having a longitudinal axial channel 42, is positioned exactly in the axis of the body 33 and of a cylinder 34, inserted into the body 33 and mounted for sliding movement in a guide 35 in thebody 33.
  • the cylindrical member 34 is carried out as a hollow piston, biassed against the inner conical member 31 by a helical spring 36 of adjustable pressure, said spring bearing against a cap nut 37, adapted to be screwed to any desired position on the screw thread on the body 33.
  • the cylindrical member 34 rests with its seat 43 against a conical tapered inner portion of the member 31 in a way similar to a valve, i. e. is seated on an axially protruding portion of the conical member 31.
  • a gap is formed between the said two parts, the gap having the shape of a conical ring ⁇ or annulus 41, the dimensions of which increase with the further movement of the cylindrical body.
  • a port 38 is provided in the cap 32 of the nozzle for the entry of liquid from the pump into the circular space 39, communicating through a series of channels 40-desoribed above, with an annular space 4i.
  • the axial channel 42 serves to guide the weft thread.
  • the nozzle just described operates as follows:
  • Liquid from the pump is supplied through the pipe and through the port 38 into the circular space 39 and further through the channels 40 into the annular space d1.
  • the cylindrical member 34 of the nozzle is moved in the guide 35 in a way similar to a piston, in the direction of the arrow, against the pressure of the spring 36 and the pressure liquid flows through the now free annular gap 41 in the seat 43, in the shape of a jet, into the center of which the weft thread (not shown) is fed through the channel 42, said weft being then entraincd by the jet of liquid and passed through the shed.
  • the arrangement of the nozzle as described above is advantageous for the operation of a weaving loom in particular since it facilitates the threading of the weft into the nozzle, considering the path along which the weft is fed to the mouth of the nozzle being very short. It is further advantageous that the remaining portion of the weft, protruding from the nozzle after completion of the picking, weaving in and cutting operations, is guided by the edge of the discharge orifice in the cap nut 37 in a position near the axis of the jet, projected from the nozzle, which facilitates the engagement of the weft by the liquid.
  • a pump for discharging liquid for propelling the weft thread of a nozzle-operated weaving loom comprising, in combination, a cylinder body formed with a cylinder bore, said cylinder bore having a first bore portion of greater diameter, a second bore portion of smaller diameter and an intermediate portion connecting said first and second portions, said cylinder body being formed with an outlet passage opening into said first bore portion adjacent said intermediate portion, and with an inlet passage opening into said first bore portion axially spaced from said outlet passage; a stepped plunger piston having a first portion of greater diameter slidably fitting inTo said iirst bore portion, a second portion of smaller dameter slidably fitting into said second bore portion and an intermediate portion between said first and second portions of said piston, said piston being slidably r'ounted in said bore for movement between an advanced discharge position in which said first portion of said piston closes said inlet passage and a retracted position in which said intermediate portion of said piston is located rearwardly of said inlet, said second and intermediate portions
  • a pump for discharging liquid for propelling the weft thread of a nozzle-operated weaving loom comprising, in combination, a cylinder body formed with a cylinder bore, said cylinder bore having a first bore portion of greater diameter, a second bore portion of smaller diameter and an intermediate portion connecting said first and second portions, said cylinder body being formed with an outlet passage opening into said first bore portion adjacent said intermediate portion, and with an inlet passage opening into said first bore portion axially spaced from said outlet passage; a container communicating with said inlet passage and being secured to said cylinder body; a stepped plunger piston having a first portion of greater diameter slidably fitting into said first bore portion, a second portion of smaller diameter slidably fitting into said second bore portion and an intermediate portion between said first and second portions of said piston, said piston being slidably mounted in said bore for movement between an advanced discharge position in which said first portion of said piston closes said inlet passage and a retracted position in which said intermediate portion of said piston is located rearwardly of said inlet, said
  • a pump for discharging liquid for propelling the weft thread of a nozzle-operated weaving loom comprising, in combination, a cylinder body formed with a cylinder bore, said cylinder bore having a first bore portion of greater diameter, a second bore portion of smaller diameter and an intermediate portion connecting said first and second portions, said cylinder body being formed with an outlet passage opening into said first bore portion adjacent said intermediate portion, and with an inlet passage opening into said rst bore portion axially spaced from said outlet passage; a container communicating with said inlet passage and secured to said cylinder body; a stepped plunger piston having a first portion of greater diameter slidably fitting into said first bore portion, said first portion being formed with a cavity, a second portion of vsmaller diameter slidably fitting into said second bore portion and projecting out of said cylinder body, and an intermediate portion between said iirst and second portions of said piston, said piston being slidably mounted in said bore for movement between an advanced discharge position in which said first portion of said piston closes

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US430689A 1954-05-18 1954-05-18 Pump and nozzle system for nozzle operated weaving looms Expired - Lifetime US2796085A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL186595A NL84616C (fr) 1954-05-18 1954-04-07
FR1112023D FR1112023A (fr) 1954-05-18 1954-05-07 Pompe alternative à tuyère liquide pour métier à tisser à tuyères
US430689A US2796085A (en) 1954-05-18 1954-05-18 Pump and nozzle system for nozzle operated weaving looms
US642880A US2855959A (en) 1954-05-18 1957-02-27 Pump and nozzle system for nozzle operated weaving looms

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US430689A US2796085A (en) 1954-05-18 1954-05-18 Pump and nozzle system for nozzle operated weaving looms
US642880A US2855959A (en) 1954-05-18 1957-02-27 Pump and nozzle system for nozzle operated weaving looms

Publications (1)

Publication Number Publication Date
US2796085A true US2796085A (en) 1957-06-18

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Family Applications (2)

Application Number Title Priority Date Filing Date
US430689A Expired - Lifetime US2796085A (en) 1954-05-18 1954-05-18 Pump and nozzle system for nozzle operated weaving looms
US642880A Expired - Lifetime US2855959A (en) 1954-05-18 1957-02-27 Pump and nozzle system for nozzle operated weaving looms

Family Applications After (1)

Application Number Title Priority Date Filing Date
US642880A Expired - Lifetime US2855959A (en) 1954-05-18 1957-02-27 Pump and nozzle system for nozzle operated weaving looms

Country Status (3)

Country Link
US (2) US2796085A (fr)
FR (1) FR1112023A (fr)
NL (1) NL84616C (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982315A (en) * 1956-09-05 1961-05-02 Wille Rudolf Pneumatic weaving method
US3257981A (en) * 1963-04-30 1966-06-28 Callaway Mills Co Tufting machine method and apparatus
US3976107A (en) * 1974-04-18 1976-08-24 Ruti Machinery Works Ltd. Device for fluid insertion of the filling thread on a loom
US4102361A (en) * 1976-07-23 1978-07-25 Nissan Motor Company, Ltd. Fluid supplying and discharging apparatus for shuttleless weaving loom
US4183382A (en) * 1976-02-27 1980-01-15 Walter Scheffel Apparatus for weft insertion in a weaving loom
EP0619391A1 (fr) * 1993-04-06 1994-10-12 Picanol N.V. Système d'insertion pour un métier à tisser à jet d'air
US7510556B2 (en) 1998-10-23 2009-03-31 Coviden Ag Vessel sealing instrument

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1219416B (de) * 1959-04-18 1966-06-16 Sdruzeni Podnikuu Textilniho S Vorrichtung an Webmaschinen mit Eintragung des Schussfadens durch einen stossweise aus einer Duese austretenden Luftstrahl
US3180368A (en) * 1962-01-23 1965-04-27 Prince Jidosha Kogyo Kabushiki Device for projecting weft yarns in fluid jet type shuttleless loom
US3217676A (en) * 1963-03-22 1965-11-16 Joe T Short Hollow needle tufting apparatus
US4105053A (en) * 1975-10-02 1978-08-08 Elitex, Koncern Textilniho Strojirenstvi Nozzle assembly for a hydraulic jet loom

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1721940A (en) * 1928-06-28 1929-07-23 Lorraine Mfg Company Pneumatic weft-introducing mechanism for looms
US1723909A (en) * 1928-03-19 1929-08-06 Alvey Fihe Company Inc Sirup-dispensing pump
US1874612A (en) * 1930-05-31 1932-08-30 Russ Mfg Company Sirup pump
US1963098A (en) * 1932-06-20 1934-06-19 Celanese Corp Shuttleless loom
US2042004A (en) * 1933-10-20 1936-05-26 Bosch Robert Supply pump for engines
US2622539A (en) * 1947-03-08 1952-12-23 Orlie E Martin Liquid soap dispenser having a valve and plunger mechanism
US2637349A (en) * 1948-12-24 1953-05-05 George W Dunham Shuttleless loom which pneumatically projects weft thread

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1723909A (en) * 1928-03-19 1929-08-06 Alvey Fihe Company Inc Sirup-dispensing pump
US1721940A (en) * 1928-06-28 1929-07-23 Lorraine Mfg Company Pneumatic weft-introducing mechanism for looms
US1874612A (en) * 1930-05-31 1932-08-30 Russ Mfg Company Sirup pump
US1963098A (en) * 1932-06-20 1934-06-19 Celanese Corp Shuttleless loom
US2042004A (en) * 1933-10-20 1936-05-26 Bosch Robert Supply pump for engines
US2622539A (en) * 1947-03-08 1952-12-23 Orlie E Martin Liquid soap dispenser having a valve and plunger mechanism
US2637349A (en) * 1948-12-24 1953-05-05 George W Dunham Shuttleless loom which pneumatically projects weft thread

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2982315A (en) * 1956-09-05 1961-05-02 Wille Rudolf Pneumatic weaving method
US3257981A (en) * 1963-04-30 1966-06-28 Callaway Mills Co Tufting machine method and apparatus
US3976107A (en) * 1974-04-18 1976-08-24 Ruti Machinery Works Ltd. Device for fluid insertion of the filling thread on a loom
US4183382A (en) * 1976-02-27 1980-01-15 Walter Scheffel Apparatus for weft insertion in a weaving loom
US4102361A (en) * 1976-07-23 1978-07-25 Nissan Motor Company, Ltd. Fluid supplying and discharging apparatus for shuttleless weaving loom
EP0619391A1 (fr) * 1993-04-06 1994-10-12 Picanol N.V. Système d'insertion pour un métier à tisser à jet d'air
BE1006981A3 (nl) * 1993-04-06 1995-02-07 Picanol Nv Insertiesysteem voor weefmachines.
US5417250A (en) * 1993-04-06 1995-05-23 Picanol N.V. Weft insertion system for air-jet loom
US7510556B2 (en) 1998-10-23 2009-03-31 Coviden Ag Vessel sealing instrument

Also Published As

Publication number Publication date
FR1112023A (fr) 1956-03-07
NL84616C (fr) 1957-03-15
US2855959A (en) 1958-10-14

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