US3788252A - Lubricant purification filter for sewing machines - Google Patents

Lubricant purification filter for sewing machines Download PDF

Info

Publication number
US3788252A
US3788252A US00254041A US3788252DA US3788252A US 3788252 A US3788252 A US 3788252A US 00254041 A US00254041 A US 00254041A US 3788252D A US3788252D A US 3788252DA US 3788252 A US3788252 A US 3788252A
Authority
US
United States
Prior art keywords
lubricant
filter
reservoir
purification filter
filter material
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
US00254041A
Other languages
English (en)
Inventor
N Marforio
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.)
Virginio Rimoldi and Co SpA
Original Assignee
Virginio Rimoldi and Co SpA
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 Virginio Rimoldi and Co SpA filed Critical Virginio Rimoldi and Co SpA
Application granted granted Critical
Publication of US3788252A publication Critical patent/US3788252A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B71/00—Lubricating or cooling devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
    • B01D29/216—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets with wound sheets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/28—Position of the filtering element
    • B01D2201/287—Filtering elements with a vertical or inclined rotation or symmetry axis

Definitions

  • the present invention relates to a lubricant purification filter for sewing machines.
  • purification filters are a necessary element in lubrication systems and to perform their function satisfactorily, their maintenance and replacement should be attended to at regular intervals.
  • a filter regardless of quality, must be periodically replaced and must therefore be readily accessible and easily replaced.
  • the size of the filter must be held within certain limitations to avoid interference with the parts of the machine, so that there exists an unsurmountable limit as to the number of possible layers of felt and the size of each disc.
  • the filter comprising the present invention is formed by a strip of felt wrapped between two concentric series of pegs bounding a tubular cavity and mounted on a supporting plug.
  • An advantage of the filter according to the present invention is the lack of moving parts with the exception of the plug which directly acts as a support of the felt and which can be easily removed and replaced from the machine, which provides a greater simplicity and ease in the replacement of the filter.
  • Another advantage of the filter according to the present invention is the manner in which the filter is wrapped causing entry of the lubricant perpendicular to the surface of the said filter, thus providing a greater filtrating surface by comparison with the discs filters and therefore a larger volume of filtering per unit of time with a reduced load on the pump.
  • FIG. 1 is a schematic longitudinal and partially sectioned view of a sewing machine with a purification filter according to the invention applied thereto.
  • FIG. 2 is a perspective view showing a strip of the filtering element to be inserted into the filter according to the present invention.
  • FIG. 3 is a plan view of the supporting plug for the filter according to the present invention.
  • FIG. 4 is a view in side elevation of the plug shown in FIG. 3.
  • the loopers are operated through the main shaft 2 by means of proper driving devices (normally connecting rod and crank rod units) which are contained in the central part of the machine and transmit their motion to transmission elements, visible in the FIG. 1, such as the transversal shaft 9, primary looper 8, support 10, transversal shaft 11, rocking arm 12, secondary looper 7 and support 13.
  • proper driving devices normally connecting rod and crank rod units
  • the pump is driven by a unit made up of a worm l6 keyed in the main shaft 2 and a worm gear 17.
  • the rotation of the gear wheels 18 and 19 forming a pump causes a lubricant contained in the reservoir 4 to be drawn through the filtrating unit 20 and a withdrawal pipe 21.
  • the lubricant drawn by the pump is sent under pressure to the various parts to be lubricated in a well-known manner.
  • FIG. 1 there is schematically shown as a preferred form of the lubrication system in which the lubricant is directed through a duct 23 and then through another duct 24 to the various elements which require lubrication.
  • the lubricant as it is directed to the points of lubrication encounters and collects a great quantity of impurities, such as the fluff from the sewing operations created by the friction between the needle, its sewing thread and the fabric.
  • the impurities are carried to a reservoir 4 and would pass again into the system if there was no filtrating unit indicated generally in FIG. 1 by numeral 20.
  • This unit includes a plug 25 mounted on the lower part of the reservoir 4, which has a cavity 26 that is of substantially ellliptical configuration within which the withdrawal pipe 21 of pump 15 extends.
  • the chamber 26 is connected with the inside of the reservoir 4 by means of peripheral slots 27 formed around the base of the chamber in the vicinity of the connection area with the plug 25. These peripheral slots 27 allow the lubricant to fill the inside of the chamber 26 and pass through a filter member 28 placed in a ring-like manner around and spaced from the withdrawing pipe 21.
  • This filter 28 is formed by a strip of felt or other filtrating material (FIG. 2) which is wrapped around the plug 25 and within the tubular space formed by two concentric series of vertical pegs 29 and 30 (FIGS. 3 and 4), which keep said filter 28 in its position without the necessity of other supporting parts.
  • the filter 28 When the filtrating unit 20 is assembled in its operating position by the tightening of screws 31 on the bottom of the machine (FIG. 1), the filter 28 is pressed between the pegs 29 and 30 by the upper wall 32 of the chamber 26 and the plug 25 in the lower side thus compelling the lubricant drawn by the pump to the inside of the chamber 26 to pass through substantially all areas of said filter 28.
  • the height of the filter 28 is preferably a little greater than that of the pegs so that, during its assembly within the chamber 26, the tightening of the plug 25 by means of the screws 31, the felt material is compressed between the upper wall 32 of the chamber 26 and the base of the plug 25, thus forming a seal between the inner and outer portions of said chamber which necessitates passage of the lubricant through the filter 28.
  • the filt'rating surface of the present invention is much larger than that of the known disc type filters,
  • the filtrating surface is provided by the vertical disposed substantially circular wall formed by the wrapped felt, while in the past with the filters made up of a number of discs of filtrating material one over the other the passage of the lubricant is perpendicular to the surface of the said discs, whose size must be governed by the limitations of space available for assembly in a sewing machine.
  • the filter according to the present invention can be very easily replaced, as there is no screw, or other supporting parts to hold the felt in its operating position.
  • the purification filter according to the present invention can form a part of the lubricating systems of sewing machines which are unlike the one to which the present description defines.
  • a lubricant purification filter construction comprising:
  • said two concentric elements being formed to expose substantially the entire outer surface of the filter material to the lubricant of the reservoir with the inner surface thereof defining a receptacle for the lubricant passing through the filter material under the influence of the pump member.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Sewing Machines And Sewing (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Filtration Of Liquid (AREA)
US00254041A 1971-06-15 1972-05-17 Lubricant purification filter for sewing machines Expired - Lifetime US3788252A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2583771 1971-06-15

Publications (1)

Publication Number Publication Date
US3788252A true US3788252A (en) 1974-01-29

Family

ID=11217873

Family Applications (1)

Application Number Title Priority Date Filing Date
US00254041A Expired - Lifetime US3788252A (en) 1971-06-15 1972-05-17 Lubricant purification filter for sewing machines

Country Status (6)

Country Link
US (1) US3788252A (OSRAM)
JP (1) JPS5443414B1 (OSRAM)
DE (1) DE2229004C3 (OSRAM)
ES (1) ES403873A1 (OSRAM)
FR (1) FR2141785B1 (OSRAM)
GB (1) GB1350161A (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549825A (en) * 1993-11-01 1996-08-27 Filtration Ltd. Liquid filter structure
CN110791926A (zh) * 2018-08-02 2020-02-14 青岛海尔洗衣机有限公司 一种过滤装置及洗衣机

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2073442A (en) * 1935-01-02 1937-03-09 Southwick W Briggs Method and means for purifying lubricating oil
US2375765A (en) * 1939-09-20 1945-05-15 Briggs Clarifier Company Filter unit
US2384509A (en) * 1942-05-28 1945-09-11 Willcox & Gibbs Sewing Machine Sewing machine
US2727480A (en) * 1952-05-10 1955-12-20 Union Special Machine Co Lubrication system for sewing machines
US2863412A (en) * 1954-12-09 1958-12-09 Union Special Machine Co Sewing machine lubrication systems
US3486474A (en) * 1968-03-01 1969-12-30 Union Special Machine Co Lubricant cooling system for sewing apparatus
US3670895A (en) * 1970-07-29 1972-06-20 Kenneth Wayne Goodpasture Fluid flow control apparatus for filter units in a filtration system
US3682308A (en) * 1970-12-03 1972-08-08 White Motor Corp Engine coolant filter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2073442A (en) * 1935-01-02 1937-03-09 Southwick W Briggs Method and means for purifying lubricating oil
US2375765A (en) * 1939-09-20 1945-05-15 Briggs Clarifier Company Filter unit
US2384509A (en) * 1942-05-28 1945-09-11 Willcox & Gibbs Sewing Machine Sewing machine
US2727480A (en) * 1952-05-10 1955-12-20 Union Special Machine Co Lubrication system for sewing machines
US2863412A (en) * 1954-12-09 1958-12-09 Union Special Machine Co Sewing machine lubrication systems
US3486474A (en) * 1968-03-01 1969-12-30 Union Special Machine Co Lubricant cooling system for sewing apparatus
US3670895A (en) * 1970-07-29 1972-06-20 Kenneth Wayne Goodpasture Fluid flow control apparatus for filter units in a filtration system
US3682308A (en) * 1970-12-03 1972-08-08 White Motor Corp Engine coolant filter

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5549825A (en) * 1993-11-01 1996-08-27 Filtration Ltd. Liquid filter structure
CN110791926A (zh) * 2018-08-02 2020-02-14 青岛海尔洗衣机有限公司 一种过滤装置及洗衣机

Also Published As

Publication number Publication date
GB1350161A (en) 1974-04-18
DE2229004C3 (de) 1980-07-17
FR2141785B1 (OSRAM) 1977-12-30
DE2229004A1 (de) 1973-01-04
FR2141785A1 (OSRAM) 1973-01-26
ES403873A1 (es) 1975-05-16
DE2229004B2 (de) 1979-11-08
JPS5443414B1 (OSRAM) 1979-12-20

Similar Documents

Publication Publication Date Title
US2076935A (en) Oil filter
US3788252A (en) Lubricant purification filter for sewing machines
US4397143A (en) Lubricating system for anti-ballooning rings of textile machines
US2441681A (en) Oil filtering apparatus
US2727480A (en) Lubrication system for sewing machines
JP3832883B2 (ja) ミシンの給油装置
US2013884A (en) Sewing machine
US2128589A (en) Rechargeable filter
US2202817A (en) Controllable lubricating system
CN219681898U (zh) 一种润滑油过滤装置
US2014445A (en) Oil clarifier
US2156547A (en) Lubricating system for sewing machines
US1847817A (en) Lubricating system
US2234295A (en) Sewing machine
US2831314A (en) Textile spinning ring
CN222961741U (zh) 一种油循环装置、机头及电脑绣花机
US2731931A (en) attwood
US2243654A (en) Sewing machine
US2446306A (en) Sewing machine
US1581765A (en) Lubricating mechanism for sewing machines
US1913193A (en) Oil filter arrangement
CN218642959U (zh) 混合绣高速针杆架架体
JPS6340225Y2 (OSRAM)
CN113757541B (zh) 一种通轴式单针区双针板同位对刺机
US745897A (en) Spinning-frame.