EP0020571A1 - Systeme de lubrification d'une aiguille. - Google Patents

Systeme de lubrification d'une aiguille.

Info

Publication number
EP0020571A1
EP0020571A1 EP79901502A EP79901502A EP0020571A1 EP 0020571 A1 EP0020571 A1 EP 0020571A1 EP 79901502 A EP79901502 A EP 79901502A EP 79901502 A EP79901502 A EP 79901502A EP 0020571 A1 EP0020571 A1 EP 0020571A1
Authority
EP
European Patent Office
Prior art keywords
needle
tip
lubricant
container
sewing 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.)
Granted
Application number
EP79901502A
Other languages
German (de)
English (en)
Other versions
EP0020571A4 (fr
EP0020571B1 (fr
Inventor
Perry E Burton
Charles E Brocklehurst
William C Griffith Jr
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.)
Opelika Manufacturing Corp
Original Assignee
Opelika Manufacturing Corp
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
Application filed by Opelika Manufacturing Corp filed Critical Opelika Manufacturing Corp
Publication of EP0020571A1 publication Critical patent/EP0020571A1/fr
Publication of EP0020571A4 publication Critical patent/EP0020571A4/fr
Application granted granted Critical
Publication of EP0020571B1 publication Critical patent/EP0020571B1/fr
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B71/00—Lubricating or cooling devices
    • D05B71/04—Needle cooling devices

Definitions

  • This invention relates to sewing machines, particularly to the reduction of heat and friction of the sewing machine needle caused by the rapid, repeated penetration of the fabric by the needle. It is desirable to reduce the heat of the sewing machine needle to avoid deterioration of the needle, of the needle thread and of the material being sewn, and it is also desirable to reduce the friction between the needle and the material being sewn to avoid the use of additional power to force the needle through the material.
  • the thread is likely to burn if the needle is excessively hot, particularly when the sewing machine is stopped and the needle still extends down through the material being sewn.
  • the present invention comprises a method and apparatus for lubricating and cooling the needle of a sewing machine, whereby the tip of the sewing needle is coated with a • lubricant during the sewing function to reduce the friction encountered between the needle and the material being sewn, thereby reducing the heat generated in the sewing needle during the sewing function.
  • a small container is positioned beneath the throat plate of the sewing machine with an opening in the container aligned with the path of the needle at an elevation above the lower end of the downward stroke of the needle, whereby the tip of the needle enters the container during the sewing function.
  • a receptacle which functions as a reservoir is located at an elevation higher than the container, and a conduit connects the reservoir to the container.
  • a lubricant fluid is present in the reservoir and moves through the conduit to the container to continuously supply the container with the lubricant that wets the tip of the needle.
  • a stream of cool air is directed against the sewing needle above the throat plate so as to cool the needle as it withdraws from the material, and the thread moving to the sewing needle is coated with a lubricant which reduces the drag of the thread as it passes through the eye of the needle and through the material being sewn.
  • Another object of this invention is to increase the speed of operation of a sewing machine during its sewing function without increasing the hazard of breaking the needle thread.
  • Another object of this invention is to provide apparatus for immersing the tip of the sewing needle of a sewing machine in a lubricant as the sewing needle reciprocates during the sewing operation.
  • Fig. 1 is a side view of a sewing machine which includes the needle lubricator system.
  • Fig. 2 is a side cross sectional view of the lower end of a sewing needle, the throat plate, feed dogs, looper , needle guard and lubricant container, showing the tip of the sewing needle immersed in lubricant.
  • Fig. 3 is a side detail view of the sewing needle, showing the needle withdrawn from the material being sewn.
  • FIG. 1 illustrates a sewing machine 10 mounted on a work table 11 and which includes a conventional needle bar 12 and sewing needle 14.
  • the needle 14 reciprocates as indicated by the double-headed arrow 15 through an opening in throat plate 16
  • the material 22 can be woven cloth or various types of natural or synthetic materials, and the material is •illustrated as moving into the drawing figure.
  • Needles guard 26 is located beneath the throat plate 16, and a small copper tube 28 is rigidly connected to needle guard 26.
  • Copper tube 28 is open ended, having an upper open end 29 and a lower open end 30, and the length of copper tube 28 is aligned with the length of needle 14.
  • the upper open end 29 of tube 28 is placed at an elevation higher than the lowest point of movement of the tip 24 of needle 14, so that the tip 24 enters the upper open end 29 of the tube 28 on each reciprocation of the needle.
  • Conduit 31 has one of its ends 32 connected to the lower end of copper tube 28, and the conduit 31 extends to a level higher than copper tube 28 so that its other end 34 is connected to the lower opening of a receptacle 35.
  • Receptacle 35 is mounted on a bracket 36 on work table 11 adjacent the sewing machine 10, and a liquid lubricant, such as silicon, is placed in the receptacle.
  • the liquid lubricant moves from
  • tube 28 functions as a container for the liquid lubricant 37, and the tip 24 of needle 14 is immersed in the liquid 37 • during the reciprocation of the needle.
  • the lubricant adheres to the tip ' of needle 24 and the supply of lubricant liquid 37 in tube 28 would be depleted; however, additional lubricant liquid will be urged under the influence of gravity from receptacle 35 downwardly through conduit 31, so' that a ready supply is always maintained in the tube 28.
  • Receptacle 35 is fabricated from flexible material and includes a lid 39 which is capable of being hermetically sealed to the container.
  • a vent opening (not shown) is formed in lid 39, to avoid drawing a low pressure in the top of the container 35 and inadvertently stopping the movement of liquid through conduit 31.
  • the receptacle 35 is located at a height above tube 28 that causes the liquid lubricant 37 to assume its level 29 at the upper end of tube 28.. If the lubricant is not moved through the conduit 31 as desired, possibly due to a change in viscosity of the liquid lubricant because of a change in temperature, the bracket 36 can be raised or lowered to increase or reduce the head of the
  • a second • bracket 40 is mounted on work table 11 and supports a second lubricant receptacle 41.
  • Lubricant receptacle 41 is similar to receptacle 35 in that it functions as a reservoir and includes a bottom opening (not shown) for the drainage of lubricant therefrom.
  • Lubricant receptacle 41 is mounted over a pair of strips of felt 42 and 43, with the felt strips 42 and 43 and receptacle 41 being mounted on bracket extension 45.
  • the needle thread 19 is directed between the felt strips 42 and 43 as it moves from its supply (not shown) to the sewing machine 10.
  • the felt strips 42 and 43 wick the liquid from receptacle 41 , thus becoming substantially saturated with the lubricant liquid, so that the thread 19 is substantially impregnated with the lubricant liquid as it moves on toward sewing machine 10.
  • the lubricant in the thread tends to accumulate to some extent in the eye of the needle, causing a reduction in the friction between the thread 19 and needle 14, thereby reducing the drag of the thread as it is pul-led on into the sewing machine.
  • the lubricant is spread to the looper 21 and to the other mechanical elements of the sewing machine by atomization of the lubricant from the rapid movement of the thread 19 beneath the throat plate 16 and because of the atomization of the lubricant 37 in tube 28 by the continual thrusting of the tip
  • the opening 25 does not immediately close about the tip portion 24 of the needle, so that a substantial amount of the lubricant remains on the tip- of the needle and is carried with the 'needle as it moves toward its next penetration of the material 22.
  • the lubricant functions to reduce the friction between the needle and the material as the needle is thrust into the material.
  • conduit 46 includes an open end 48 directed toward needle 14 of sewing machine 10.
  • Conduit 46 extends from a supply of air and directs a cooling stream of air toward the needle during the operation of the sewing machine, to cool the needle.
  • the stream of air is reduced in temperature.
  • the airstream is cooled through a centrifuge process, where, due to Boyle's law the temporary reduction of pressure of a moving stream of air cools the air, and the cooled air is then directed to the needle.
  • a conventional refrigeration system or other cooling means can be utilized to cool the air directed toward the sewing needle.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

L'extremite pointue d'une aiguille de machine a coudre (14) est immergee dans un lubrifiant liquide (37) lorsqu'elle atteint la fin inferieure de sa course descendante au travers du materiau (22) cousu, afin de recouvrir l'extremite de l'aiguille avec un lubrifiant et de reduire le frottement et ainsi la chaleur degagee par le frottement entre l'aiguille et le materiau cousu.
EP79901502A 1978-10-26 1980-05-07 Systeme de lubrification d'une aiguille Expired EP0020571B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US95493478A 1978-10-26 1978-10-26
US954934 1978-10-26

Publications (3)

Publication Number Publication Date
EP0020571A1 true EP0020571A1 (fr) 1981-01-07
EP0020571A4 EP0020571A4 (fr) 1981-02-12
EP0020571B1 EP0020571B1 (fr) 1983-10-05

Family

ID=25496130

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79901502A Expired EP0020571B1 (fr) 1978-10-26 1980-05-07 Systeme de lubrification d'une aiguille

Country Status (7)

Country Link
EP (1) EP0020571B1 (fr)
JP (1) JPS55501009A (fr)
CA (1) CA1119468A (fr)
DE (1) DE2966271D1 (fr)
DK (1) DK267080A (fr)
IT (1) IT1193848B (fr)
WO (1) WO1980000854A1 (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1332536A (en) * 1917-07-12 1920-03-02 Beckwith Box Toe Company Sewing-machine attachment
US1758101A (en) * 1925-04-20 1930-05-13 St Regis Paper Co Sewing
US2373734A (en) * 1942-09-01 1945-04-17 Albero Andrew Means for cooling sewing machine needles
US2457362A (en) * 1944-12-22 1948-12-28 Premier Thread Company Apparatus for cooling sewing machine needles
DE1010360B (de) * 1954-05-14 1957-06-13 Ferdinand Bernhard Schmetz Naehmaschine mit Einrichtung zum Kuehlen der Nadel
DE962135C (de) * 1954-05-14 1957-04-18 Erwin Kleyer Naehmaschine mit Nadelkuehleinrichtung
US2885984A (en) * 1956-08-13 1959-05-12 William C Earnhart Thread lubricating attachment for sewing machines
DE1133225B (de) * 1960-12-16 1962-07-12 Ver Volkseigener Betr E Konfek Nadelkuehleinrichtung an Naehmaschinen
US3382681A (en) * 1964-11-12 1968-05-14 Melville G Hunter Stabber cooling device
FR1591459A (fr) * 1968-11-13 1970-04-27
US3611958A (en) * 1969-08-05 1971-10-12 Collins & Aikman Corp Apparatus for the manufacture of tufted fabrics
BE755668A (fr) * 1970-09-03 1971-03-03 Solvay Procede de stabilisation du 1,1,1-trichlorethane.
IT948514B (it) * 1970-10-05 1973-06-11 Ici Ltd Compsizione solvente
DE2617791A1 (de) * 1976-04-23 1977-11-03 Harald Klocke Naehvorrichtung
DE2730866A1 (de) * 1977-07-08 1979-01-25 Inst Textil & Faserforschung Naehmaschine

Also Published As

Publication number Publication date
EP0020571A4 (fr) 1981-02-12
EP0020571B1 (fr) 1983-10-05
CA1119468A (fr) 1982-03-09
JPS55501009A (fr) 1980-11-27
DE2966271D1 (en) 1983-11-10
DK267080A (da) 1980-06-23
IT7926760A0 (it) 1979-10-24
IT1193848B (it) 1988-08-24
WO1980000854A1 (fr) 1980-05-01

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