US2924107A - Control mechanism for the displacements of a machine part - Google Patents

Control mechanism for the displacements of a machine part Download PDF

Info

Publication number
US2924107A
US2924107A US786319A US78631959A US2924107A US 2924107 A US2924107 A US 2924107A US 786319 A US786319 A US 786319A US 78631959 A US78631959 A US 78631959A US 2924107 A US2924107 A US 2924107A
Authority
US
United States
Prior art keywords
cam
shaft
ratchet wheel
displacements
fast
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
US786319A
Other languages
English (en)
Inventor
Fresard Marcel
Prelat Gerald
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.)
Mefina SA
Original Assignee
Mefina SA
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 Mefina SA filed Critical Mefina SA
Application granted granted Critical
Publication of US2924107A publication Critical patent/US2924107A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G19/00—Servo-mechanisms with follow-up action, e.g. occurring in steps
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05G—CONTROL DEVICES OR SYSTEMS INSOFAR AS CHARACTERISED BY MECHANICAL FEATURES ONLY
    • G05G7/00—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof
    • G05G7/12—Manually-actuated control mechanisms provided with one single controlling member co-operating with one single controlled member; Details thereof specially adapted for actuating a member on a system in motion with respect to the controlling member, e.g. on a rotating shaft
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/15—Intermittent grip type mechanical movement
    • Y10T74/1526—Oscillation or reciprocation to intermittent unidirectional motion
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18888—Reciprocating to or from oscillating
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/18—Mechanical movements
    • Y10T74/18992—Reciprocating to reciprocating
    • 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
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams
    • Y10T74/2102—Adjustable

Definitions

  • the present invention is concerned with a control mechanism for the displacements of a machine part, more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power.
  • This mechanism is characterised by an oscillating shaft intended to be connected to a source of continuous energy by at least one bell-shaped cam fast with a ratchet wheel mounted with a close fit on the said shaft and adapted to be displaced axially thereon, by an axial abutment member co-operating with the working surface of the said cam, said abutment member being fast with the said shaft by at least one hingedly mounted lever in the form of an escapementdever co-operating with the said ratchet wheel to prevent the advance of the said cam, by at least one electromagnet controlled by the said digital signals and adapted to bring the said escapement lever into one or other of its two working positions, the arrangement being such that the angular position of the said cam relatively to the axial abutment, and consequently its axial position, is different depending on which of the two arms of the said escapement lever is concerned.
  • Fig. l is a sectional view taken on the line 1-1 of Fig. 2 of a control mechanism simplified so as to illustrate the principle of the invention.
  • Fig. 2 is an elevational view thereof.
  • Fig. 3 is a sectional view similar to that of Fig. 1, in
  • Fig. 4 is an elevational view of the mechanism in the same operational position as that of Fig. 3.
  • Fig. 5 is an elevational view of the second form of embodiment of the subject of the invention applied to the Fig. through a reduction gear.
  • Fig. 10 is an end view thereof.
  • Fig. 11 is an elevational view of a detail of this device,
  • Fig. 12 is a sectional view taken on the line XII-XII 'of Fig. 11.
  • the mechanism illustrated in Figures 1' to 4 comprises an oscillating shaft 1 connected to a continuous energy 'source which is not shown in the drawings.
  • This shaft oscillates as indicated by the arrow 2, through oneeighth 'of a revolution.
  • Mounted on the said shaft in such a' manner as to be freely slidable thereon is a bell-shaped cam *3 fast with a ratchet wheel 4 comprising four teeth 4a.
  • Frictional connection between the shaft 1 and the cam 3 is ensured by a device which is shown in detail in Fig. 7, comprising two balls 5 and 6 arranged in a diametrally arranged hole 7 in the shaft 1 and subjected to the action of a coil spring 8 which is interposed between the said balls and which tends to cause them to penetrate partly into one or other of a series of eight longitudinal grooves 9 formed in the central bore of the cam 3 and ratchet wheel 4.
  • the cam as long as it is left free, oscillates with the shaft 1 whilst being capable of sliding axially along said shaft.
  • A'spring 12 which is partly arms which is in the form of an escapement lever hingedly mounted on a fixed pin 14 and subjected to the action of a restoring spring 15 on the one hand and an electromagnet 16 on the other hand.
  • the two arms of the lever 13 terminate respectively in two noses 13a and 13b cooperating with the teeth 4a of theratchet wheel 4 so as to prevent the latter, and consequently the cam 3, from rotating with the shaft 1 in one direction whilst leaving it free to rotate with the shaft 1 in the opposite direction.
  • the position of the cam is determined by the escapement lever 13; depending on whether one or other of the lever arms has previously stopped the ratchet wheel, the cam occupies one or other of the two positions mentioned hereinbefore.
  • the cam occupies one or other of the two positions mentioned hereinbefore.
  • the impulses are sent to the electromagnet 16 by a digital programme control means constituted by a perforated disc 17 driven step by step by a mechanism not shown in the drawings.
  • the machine also comprises a circuitbreaker 19 arranged in series with the programme control means and controlled by a cam 20 rotating at such a speed that this circuit breaker closes the circuit for an instant during which the contact of the programme control means is itself closed.
  • the nose 13b can remain in permanent contact with the ratchet wheel 4 under the action of the restoring spring 15, permitting the cam to be maintained in the axial position illustrated in Fig. 4, the nose 13:: cannot remain permanently applied against the ratchet wheel since this would imply that the electromagnet is to be capable of attracting during erates only by impulses. Consequently, if it is desired that the cam should remain in the axial position shown in Fig. 2, it is necessary at each oscillation of the shaft 1 to supply a fresh impulse to the electromagnet, thus putting the nose 13a again in contact with the ratchet wheel.
  • This mechanism will be applied advantageously to the control of the needle carrier or work feed device of a sewing machine for carrying out stitches forming various patterns, more particularly stitches of the kind known as embroidery stitches.
  • the mechanism has been simplified so as to illustrate the basic principle of the invention.
  • the height of the elevations 3a differs at each cam in such a manner as to permit, by appropriate combinations, obtaining a larger number of different possible displacements of the sleeve 23 for a small number of cams.
  • the cams In the upper part of Fig. 5, the cams have all been illustrated in their down" position i.e. in the position wherein the spacers 21 are opposite recesses situated between the elevations 3a, whereas in the lower part of this figure the cams have all been illustrated in their up position i.e. the position in which the spacers 21 are situated opposite the elevations 3a.
  • the difference in axial positions between the upper and lower parts of the sleeve 23 indicates the maximum amplitude of the displacements of the said sleeve.
  • each electromagnet 16 has been distributed above and below the shaft 1, but each of them controls a different escapement lever 13, the latter also being subjected to the action of restoring springs.
  • the core 24 of each electromagnet 16 carries, slidable axially in a hole 25 in the said core, a buffer 26 which is made of plastic material and is subjected to the action of a shock-absorbing spring 27 (Fig. 8).
  • These buffers absorb the shocks of the escapement levers on the electromagnets and constitute moreover restoring springs operating like springs of the first embodiment.
  • the mechanism according to the invention comprises a reduction gear having adjustable speed ratios, interposed between the sleeve 23 and the output element of the mechanism, designated as 28.
  • This output element constituted by a sleeve, is itself connected to the controlled part, which is not shown in the drawings.
  • This reduction gear comprises a frame 29 wherein are mounted, in such a manner as to be oscillatable about a pin 30, two oscillatable elements 31 each com prising on one of their faces two recesses 32 and 33 adapted to receive respectively the end of a restoring spring 34 and the end of a push member 35 which is also fast with the sleeve 23.
  • the axial movements of the latter are thus transmitted as oscillating movements of the elements 31.
  • the latter each have at their face opposite to the face comprising the recesses 32 and 33, a circular cavity 36 against which bears the end of a push member 37 fixed to the axially slidable sleeve 28.
  • the movements of the oscillatable elements are thus transmittedto the sleeve 28 with a reduction ratio which varies with the position of the push members 37 on the surface 36 of the oscillatable elements.
  • the sleeve 28 can be rotated on itself by means of a serrated wheel 38 keyed on the said shaft, so that the push members 37 can be brought nearer to or moved away from the pivot pins 30 of the oscillatable elements.
  • the ratio is 1/ l, the axes of the push members 37 being situated at the same distance from the pivot pin 30 as the axes of the push members 35 are.
  • a control mechanism for the displacements of a machine part more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power; an oscillating shaft intended to be connected to a source of continuous energy at least one ratchet wheel mounted with a close fit on the said shaft and adapted to be displaced axially thereon, at least one bell-shaped cam having axially facing cam surfaces fast with said ratchet wheel, an axial abutment member cooperating with the working surface of the said cam, said abutment member being fast with the said shaft, at least one hingedly mounted two arms detent lever each arm of which engages alternately with the said ratchet wheel to prevent the advance of the said cam, and actuating means controlled by the said digital signals and operatively connected to said detent lever so as to produce rocking movements thereof, the arrangement being such that the angular position of the said cam relatively to the axial abutment, and consequently its axial position, is different depending on which of the two
  • a control mechanism for the displacements of a machine part more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power; an oscillating shaft intended to be connected to a source of continuous energy, a series of ratchet wheels each mounted with a close fit on the said shaft and adapted to be displaced axially thereon, a series of bell-shaped cams having each axially facing cam surfaces each fast with one of said ratchet wheels, an axial abutment member co-operating with the working surface of one of the ending cams of the series, said abutment member being fast with the said shaft, spacers, which are axially movable but fast in the angular sense with the said shaft, interposed between the said cams, a series of hingedly mounted two arms detent levers, the arms of each of which engage alternatively one of the said ratchet wheels to prevent the advance of the corresponding cam, and a series of actuating means controlled by the said digital
  • a control mechanism for the displacements of a machine part more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power; an oscillating shaft intended to-be c0nnected to a source of continuous energy, at least one ratchet wheel mounted with a close fit on the said shaft and adapted to be displaced axially thereon, at least one bell-shaped cam having axially facing cam surfaces, fast with said ratchet wheel, an axial abutment member cooperating with the working surface of the said cam, said abutment member being fast with the said shaft at least one hingedly mounted two arms detent lever each arm of which engages alternatively the said ratchet wheel to prevent the advance of the said cam, a restoring spring urging the said detent lever in one of its two working positions, and at least one electro-magnet controlled by the said digital signals and adapted to bring the said detent lever into the other of its two working positions against the action of said restoring spring, the arrangement being
  • a control mechanism for the displacements of a machine part more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power; an oscillating shaft intended to be connected to a source of continuous energy, at least one ratchet wheel mounted with a close fit on the said shaft and adapted to be displaced axially thereon, at least one bell-shaped cam having axially facing cam surfaces, fast with said ratchet wheel, an axial abutment member co-operating with the working surface of the said cam, said abutment member being fast with the said shaft, at least one hingedly mounted two arms detent lever each arm of which engages alternatively the said ratchet wheel to prevent the advance of the said cam, at least one electromagnet provided with a core controlled by the said digital signals and adapted to bring the said detent lever into one of its two working positions, a buffer carried by the said core, and a spring acting on said buffer whereby this latter is adapted to damp the shocks of the de
  • a control mechanism for the displacements of a machine part more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power; an oscillating shaft intended to be con- IlCCtBd t 3.
  • At least one ratchet wheel mounted with a close fit on the said shaft and adapted to be displaced axially thereon, at least one bell-shaped cam having axially facing cam surfaces fast with said ratchet wheel, a series of longitudinal grooves formed in the central hole of the cam, a radial hole formed in the said oscillating shaft, at least one ball working surface of the said cam, said abutment member being fast with the said shaft, at least one hingedly mounted two arms detent lever each arm of WhlCh engages alternatively the said ratchet wheel to prevent the advance of the said cam, and actuating means controlled by the said'digital signals and operatively con.- nected to said detent lever so as to produce rocking movements thereof, the arrangement being such that the angular position of the said cam relatively to the axial abutment, and consequently its axial position, is different depending on which of the two arms of the said detent lever engages the ratchet wheel.
  • a control mechanism for the displacements of a machine part more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power; an oscillating shaft intended to be connected to a source of continuous energy, a ratchet wheel mounted with a close fit on the said shaft and adapted to be displaced axially thereon, at least one bell-shaped'c'am having axially facing cam surfaces, fast with said ratchet wheel and comprising a number of elevations equal to the number of teeth in the ratchet wheel, an axial abutment member cooperating with the working surface of the said cam, said abutment member being fast with the said shaft, at least one hingedly mounted two arms detent lever each arm of which engages alternatively the said ratchet wheel to prevent the advance of the said cam, and actuating means controlled by the said digital signals and operatively connected to said detent lever so as to produce rocking movements thereof, the arrangement being such that the angular position of the said cam relatively
  • a control mechanism for the displacements of a machine part more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power; an oscillating shaft intended to be connected to a source of continuous energy, at least one ratchet wheel mounted with a close fit on the said shaft and adapted to be displaced axially thereon, at least one bell-shaped cam having axially facing cam surfaces fast with said ratchet wheel, an axial abutment member cooperating with the working surface of the said cam, said abutment member being fast with the said shaft, at least one hingedly mounted two arms detent lever each arm of which engages alternatively the said ratchet wheel to prevent the advance of the said cam, actuating means controlled by the said digital signals and operatively connected to said detent lever so as to produce rocking movements thereof, the arrangement being such that the angular position of the said cam relatively to the axial abutment, and consequently its axial position, is different depending on which of the two arms
  • a control mechanism for the displacements of a machine part more particularly the needle carrier or work feed device of a sewing machine, transforming digital signals into similar shifting movements, with amplified power; an oscillating shaft intended to be connected to a source of continuous energy, at least one ratchet wheel mounted with a close fit on the said shaft and adapted to be displaced axially thereon, at least one bell-shaped cam having axially facing cam surfaces fast with said ratchet wheel, an axial abutment member cooperating with the working surface of the said cam, said abutment member being fast with the said shaft, at least one hingedly mounted two arms detent lever each arm of which engages alternatively the said ratchet wheel to prevent the advance of the said cam, actuating means controlled by the said digital signals and operatively connected to said detent lever so as to produce rocking movements thereof, the arangement being such that the angular position'of the said cam relatively to the axial abutment, and consequently its axial position, is difierent

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Mechanical Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)
  • Transmission Devices (AREA)
US786319A 1958-01-14 1959-01-12 Control mechanism for the displacements of a machine part Expired - Lifetime US2924107A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH853019X 1958-01-14

Publications (1)

Publication Number Publication Date
US2924107A true US2924107A (en) 1960-02-09

Family

ID=4542444

Family Applications (1)

Application Number Title Priority Date Filing Date
US786319A Expired - Lifetime US2924107A (en) 1958-01-14 1959-01-12 Control mechanism for the displacements of a machine part

Country Status (5)

Country Link
US (1) US2924107A (enrdf_load_stackoverflow)
DE (1) DE1084553B (enrdf_load_stackoverflow)
FR (1) FR1255934A (enrdf_load_stackoverflow)
GB (1) GB853019A (enrdf_load_stackoverflow)
NL (2) NL112574C (enrdf_load_stackoverflow)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113537A (en) * 1960-03-28 1963-12-10 Necchi Spa Machine for sewing on designs including buttonholes
US3168174A (en) * 1961-12-07 1965-02-02 Kirton Joseph Mason Latch operated clutch for stapling machine
US3543596A (en) * 1969-01-09 1970-12-01 Gulf & Western Industries Drive mechanism having improved locking means
US3789681A (en) * 1971-04-06 1974-02-05 Suwa Seikosha Kk Apparatus for transforming reciprocating motion into unidirectional rotation
US3874312A (en) * 1974-01-23 1975-04-01 Singer Co Electric cam selector mechanism for sewing machines
US4112858A (en) * 1976-02-27 1978-09-12 Janome Sewing Machine Co., Ltd. Sewing machine with a pattern generating device
US4635805A (en) * 1981-11-05 1987-01-13 Kidde, Inc. Crane boom locking pin insertion indicator and actuator means
US4664272A (en) * 1981-11-05 1987-05-12 Kidde, Inc. Telescoping crane boom with locking and indicator means
EP0604179B2 (en) † 1992-12-21 2006-01-04 JOHNSON & JOHNSON VISION PRODUCTS, INC. Ophthalmic lens inspection method and apparatus

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3111854A (en) 1961-04-12 1963-11-26 Clary Sales & Supply Corp Intermittent drive mechanism

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US682377A (en) * 1900-04-09 1901-09-10 Theodore H Wurmb Electromagnet.
US745217A (en) * 1903-04-25 1903-11-24 Carl F Mensing Automatic scene-displaying apparatus.
US1549399A (en) * 1922-10-02 1925-08-11 Percy Q Williams Glassware conveying device
US2383418A (en) * 1940-12-12 1945-08-21 Rhodes Inc M H Escapement
US2693708A (en) * 1952-09-30 1954-11-09 Sr Walter S Baer Lever system
US2696124A (en) * 1952-04-22 1954-12-07 Gen Motors Corp Transmission antirattle gearing
US2783652A (en) * 1956-01-19 1957-03-05 George E Smith Reciprocating motion transmitting mechanism
US2808506A (en) * 1953-03-24 1957-10-01 Polarad Electronics Corp Tracking mechanism for ganged radio circuits
US2863409A (en) * 1954-02-10 1958-12-09 Pfaff Ag G M Sewing machines

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US682377A (en) * 1900-04-09 1901-09-10 Theodore H Wurmb Electromagnet.
US745217A (en) * 1903-04-25 1903-11-24 Carl F Mensing Automatic scene-displaying apparatus.
US1549399A (en) * 1922-10-02 1925-08-11 Percy Q Williams Glassware conveying device
US2383418A (en) * 1940-12-12 1945-08-21 Rhodes Inc M H Escapement
US2696124A (en) * 1952-04-22 1954-12-07 Gen Motors Corp Transmission antirattle gearing
US2693708A (en) * 1952-09-30 1954-11-09 Sr Walter S Baer Lever system
US2808506A (en) * 1953-03-24 1957-10-01 Polarad Electronics Corp Tracking mechanism for ganged radio circuits
US2863409A (en) * 1954-02-10 1958-12-09 Pfaff Ag G M Sewing machines
US2783652A (en) * 1956-01-19 1957-03-05 George E Smith Reciprocating motion transmitting mechanism

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3113537A (en) * 1960-03-28 1963-12-10 Necchi Spa Machine for sewing on designs including buttonholes
US3168174A (en) * 1961-12-07 1965-02-02 Kirton Joseph Mason Latch operated clutch for stapling machine
US3543596A (en) * 1969-01-09 1970-12-01 Gulf & Western Industries Drive mechanism having improved locking means
US3789681A (en) * 1971-04-06 1974-02-05 Suwa Seikosha Kk Apparatus for transforming reciprocating motion into unidirectional rotation
US3874312A (en) * 1974-01-23 1975-04-01 Singer Co Electric cam selector mechanism for sewing machines
US4112858A (en) * 1976-02-27 1978-09-12 Janome Sewing Machine Co., Ltd. Sewing machine with a pattern generating device
US4635805A (en) * 1981-11-05 1987-01-13 Kidde, Inc. Crane boom locking pin insertion indicator and actuator means
US4664272A (en) * 1981-11-05 1987-05-12 Kidde, Inc. Telescoping crane boom with locking and indicator means
EP0604179B2 (en) † 1992-12-21 2006-01-04 JOHNSON & JOHNSON VISION PRODUCTS, INC. Ophthalmic lens inspection method and apparatus

Also Published As

Publication number Publication date
NL112574C (enrdf_load_stackoverflow) 1900-01-01
GB853019A (en) 1960-11-02
NL234917A (enrdf_load_stackoverflow) 1900-01-01
FR1255934A (fr) 1961-03-17
DE1084553B (de) 1960-06-30

Similar Documents

Publication Publication Date Title
US2924107A (en) Control mechanism for the displacements of a machine part
ES8307041A1 (es) Dispositivo de embrague, especialmente para una maquina textil.
US2373429A (en) Magnetic escapement for timepieces
US2540723A (en) Automatic washing appliance and control system therefor
US3207186A (en) Control mechanism in dobbies for controlling the heald frames in a loom
US3058294A (en) Inertia wound timepiece with magnetic coupling means
US2363535A (en) Knitting machine
US2833387A (en) Serial printer
ES356720A1 (es) Maquina selectora de hilos para labores de tejeduria y o- tras aplicaciones textiles.
ES412030A1 (es) Dispositivo para la transformacion de un movimiento rotati-vo en un movimiento oscilante en maquinas de tejer estre- chas.
GB1434869A (en) Method and apparatus for moving a knitting needle of a shuttle less loom
US2270080A (en) Driving mechanism for washing machines
US3602050A (en) Programmers for electric household appliances
US2677029A (en) Time delay relay
US2635646A (en) Letoff mechanism for looms
GB999510A (en) Improvements in or relating to electric switch programing devices
US2915161A (en) Clutch mechanism
GB844453A (en) Improvements in or relating to control mechanisms for warp beams
ATE19414T1 (de) Vorrichtung zum synchronisieren einer fachbildemaschine mit einer webmaschinen.
ES329619A1 (es) Mecanismo de dibujo para aplicacion a una maquina circular de hacer punto.
US2776523A (en) Chromatic effect producing spinning toy
SU123475A1 (ru) Механизм зевообразовани или смены челноков ткацкого станка
US2296233A (en) Timer mechanism
US1884853A (en) Clock driving mechanism
US3064604A (en) Device for regulating the displacement of the fabric feed member in sewing machines