US3812729A - Electromechanical disc adder mechanisms - Google Patents

Electromechanical disc adder mechanisms Download PDF

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Publication number
US3812729A
US3812729A US00379535A US37953573A US3812729A US 3812729 A US3812729 A US 3812729A US 00379535 A US00379535 A US 00379535A US 37953573 A US37953573 A US 37953573A US 3812729 A US3812729 A US 3812729A
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United States
Prior art keywords
discs
keyed
disc
stop
interrupter element
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
US00379535A
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English (en)
Inventor
S Ketterer
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.)
Singer Co
Original Assignee
Singer Co
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 US00379535A priority Critical patent/US3812729A/en
Application filed by Singer Co filed Critical Singer Co
Priority to JP49051082A priority patent/JPS5027648A/ja
Publication of US3812729A publication Critical patent/US3812729A/en
Application granted granted Critical
Priority to CA202,055A priority patent/CA994174A/en
Priority to GB2619474A priority patent/GB1465806A/en
Priority to IT24589/74A priority patent/IT1015525B/it
Priority to ES427867A priority patent/ES427867A1/es
Priority to DE2432062A priority patent/DE2432062A1/de
Priority to AU70834/74A priority patent/AU7083474A/en
Priority to CH925974A priority patent/CH577055A5/xx
Priority to FR7423988A priority patent/FR2238001B3/fr
Priority to BR5758/74A priority patent/BR7405758D0/pt
Priority to SE7409247A priority patent/SE398760B/xx
Priority to DD179926A priority patent/DD114638A5/xx
Priority to AR254709A priority patent/AR201509A1/es
Assigned to BANK OF NOVA SCOTIA, THE reassignment BANK OF NOVA SCOTIA, THE SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BICOASTAL CORPORATION A DE CORP.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • 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
    • Y10T74/18056—Rotary to or from reciprocating or oscillating
    • Y10T74/18296—Cam and slide
    • Y10T74/18304—Axial cam

Definitions

  • An electromechanical adder mechanism for selectively influencing the operation of sewing machine stitch forming instrumentalities in accordance with a preselected pattern and comprising a plurality of discs which are arranged coaxially on a drive shaft including discs keyed to the drive shaft and freely journaled discs frictionally coupled to turn with the keyed discs.
  • Axial cam segments on adjacent keyed and freely journaled discs may be selectively brought into engagement by electromagnetically influenced stop means for changing the angular orientation of the freely journaled discs relative to the keyed discs thus selectively to regulate the total axial dimension of the stack of discs on the shaft which is the output of the adder mechanism.
  • This object is attained by the provision of a series of discs on a circularly moving drive shaft alternately keyed to and freely joumaled on the shaft with axial cam surfaces acting between the discs to influence the axial dimension of the entire stack of discs. Angular changes which are made in the position of the freely joumaled discs with respect to the keyed discs influencing changes in the output of the adder as represented by the total axial dimension of the stack. Relative movement is required between the discs only to reflect a change in the output and at all other times the discs turn as a unit and thus minimize wear between the parts.
  • Another object of this invention is to provide an electromechanical adder mechanism in which greatly increased time is available for receipt and utilization of the electrical pattern signals. This object is attained by an arrangement whereby the pattern signal for a particular stitch is received and manipulated while a stitch in the pattern is being formed in accordance with the previously introduced pattern information.
  • Still another object of this invention is to provide an electromechanical adder mechanism in which the pattern information received as input to the electromagnetic device is unrelated to the magnitude of forces required to be delivered by the output of the adder mechanism.
  • This object of the invention is attained by an arrangement of interrupter elements for influencing the relative angular orientation of stacked discs on the drive shaft in which the forces required by the pattern input signals are applied to the interrupter elements in a direction substantially perpendicular to the direction to which the interrupter elements assume the operating forces incident to the development of the output of the adder mechanism.
  • FIG. 1 represents a front perspective view of the adder mechanism of this invention as applied to the needle jogging mechanism of a sewing machine
  • FIG. 2 is an elevational view of a portion of the adder mechanism of this invention showing one set of discs in a position adding an increment to the axial dimension of the stack and another set of discs in a position subtracting an increment,
  • FIG. 3A is a perspective view showing one side of a keyed disc of this invention.
  • FIG. 3B is a perspective view showing the other side of a keyed disc of this invention.
  • FIG. 4A is a perspective view showing one side of a freely joumaled disc of this invention.
  • FIG. 4B is a perspective view showing the other side of a freely journaled disc of this invention.
  • FIG. 5 represents a cross sectional view taken transversely of the drive shaft of the adder mechanism of FIG. 1 showing the keyed and freely joumaled discs in one relative angular position and showing the fragment of the interrupter element in a preferred position for initiation of electromagnetic influence by a pattern signal,
  • FIG. 6 is a view similar to FIG. 5 but showing the po sition of parts after approximately one-half revolution of the drive shaft when the interrupter element makes initial contact with a stop abutment on the freely journaled disc and begins to influence the relative angular orientation of keyed and freely joumaled discs,
  • FIG. 6A is an exploded perspective view of a set of adjacent keyed and freely joumaled discs together with the interrupter element in the position of parts illustrated in FIG. 6,
  • FIG. 7 is a view similar to FIG. 5 but illustrating that relative position of parts when the interrupter element conpletes that influence of the angular position of the freely joumaled discs which was begun in FIG. 6,
  • FIG. 8 is a view similar to FIG. 7 but showing the position of parts when the interrupter element makes initial contact with the second stop abutment on the freely joumaled disc,
  • FIG. 8A is an exploded perspective view of a set of adjacent keyed and freely joumaled discs together with the interrupter element in the position of parts illustrated in FIG. 8, and
  • FIG. 9 is a view similar to FIG. 8 but illustrating the position of parts when the interrupter element completes that influence of the angular position of the freely joumaled disc which was begun by engagement with the second stop abutment as shown in FIGS.
  • FIG. 1 DESCRIPTION OF THE INVENTION Illustrated in FIG. 1 is an adaptation of an electromechanical disc adder of this invention indicated generally as 20 in a sewing machine bracket arm 21'shown operatively connected to influence the lateral jogging or bight movements of a sewing machine needle 22 in the formation of a pattern of stitches.
  • the needle 22 is carried by a needle bar 23 journaled for endwise reciprocation in a gate 24 which is pivotally mounted for lateral swinging movement in the bracket arm.
  • An arm shaft 25 in the bracket arm may be connected by any conventional means (not shown) to impart endwise reciprocation to the needle bar.
  • the needle bar gate 24 is shifted laterally to impart zigzag movements to the needle by means of a link 26 pivoted as at 27 to the gate and pivoted at 28 to a follower lever 29 fulcrumed at 30 in the bracket arm and having a roller 31 journaled at its free extremity.
  • a spring 32 may be arranged between the link 26 and the bracket arm of the sewing machine frame to urge the roller 31 to the right as viewed in FIG. 1 against the disc adder.
  • FIG. 1 Also as shown in FIG. 1 is an assembled electromechanical disc adder of this invention illustrating that the parts may be assembled directly on an actuating shaft of the sewing machine such as the arm shaft 25 requiring only that the shaft be formed with a keyway 40 or its equivalent.
  • Assembled in coaxially stacked relation on the arm shaft are a series of alternated keyed discs 50 andfreely joumaled discs 60. All of the discs keyed and freely journaled are axially shiftable along the arm shaft with the exception of the first keyed disc 50 which is formed with an integral collar 70 secured by set screws 71 fast on the arm shaft.
  • FIGS. 3A and 3B illustrate opposite sides of a typical keyed disc 50 showing that it is formed with a shaft accommodating bore 72 into which projects a key 73 for engagement with the shaft keyway 40.
  • the control cam surfaces 75 and 76 are circular but each having a different axis, both axes being located eccentrically from the axis of the bore 72.
  • control cam surfaces 75 and 76 together define a varying shape for the groove 74 which includes a narrow segment 77 and a wide segment '78 for a purpose which will be described below.
  • the keyed disc is formed with an axially enlarged hub portion 79, i.e., the hub portion 79 is made thicker axially of the outer periphery of the disc.
  • each keyed disc as shown in FIG. 3A is formed radially outward from the bore 72 with an axially extending cam segment 80 joined at each side by an arcuate and sloping ramp 81 merging smoothly with the axial cam segment 80 and with the face 82 of the keyed disc. It is pointed out that each of disc than the the keyed cam discs are identical with one exception, i.e., the axial dimension X of the axially extending cam segment 80.
  • each of the discs 60 is formed with a plain bore accommodating the arm shaft 25.
  • One side of each freely journaled disc 60, as shown in FIG. 4A, is formed with an axially projecting hub 91 from which a stop projection 92 extends radially and is formed with a radial inner stop abutment surface 93.
  • an outer stop abutment surface 94 is provided on an arcuate lug 95 projecting axially from the face 96 of the freely joumaled disc. As shown in FIGS. 5 to 9, a radial clear space is provided between the outside of the inner stop abutment surface 93 and the inside of the outer stop abutment surface 94.
  • each freely journaled disc 60 is formed with an axially projecting cam follower block 97 disposed adjacent to the bore 90 for cooperation with one of the cam segments 80.
  • the cam follower blocks 97 one on each disc are preferably of an equal dimension axially of the discs and preferably that axial dimension is at least as large as the largest axial dimension X of cam segment 80.
  • FIGS. 1, 6, 6A, 8 and 8A there is provided in cooperation with each adjacent pair of keyed and freely journaled discs an interrupter element 100. Since all of the interrupter elements are identical one will now be described in detail.
  • Each interrupter element is formed with a substantially flat base portion 101 formed with a circular opening 102 adapted loosely to embrace a circular armature rod 103 of a conventional electromagnetically influenced solenoid indicated generally at 104.
  • the solenoid includes a coil 105 arranged between the upturned arms 106 of a U-shaped frame 107 transversely of which said armature rod is shiftable.
  • a head 108 formed on the armature rod 103 constrains the interrupter base portion on the rod.
  • the interrupter element Extending upwardly from the base portion 101, the interrupter element is formed with an arched portion 109 which terminates in a head arranged substantially in alignment with the flat base portion.
  • the head includes a control lug 110 extending on one side and a stop lug extending on the other side thereof.
  • a coil spring 121 stretched between the arched portion 109 of the interrupter and the solenoid frame 107 serves to pivot the interrupter element about the upper edge of the solenoid frame arm 106 when the solenoid is deenergized and when the inner cam surface 75 of the control cam groove 74 permits as shown in FIG. 6
  • the soleniod frames 107 may all be mounted on a common support block 123 which is secured in the sewing machine bracket arm beneath the arm shaft.
  • Each of the interrupter elements 100 is connected to its respective solenoid armature rod by a simple swivel joint providing capacity for pivotal movement not only to accommodate shifting movement of the interrupter elements radially of the discs, but also for limited movement of the interrupter heads in a direction axially along the stack of discs.
  • the adder mechanism comprises a plurality of sets of keyed and freely joumaled discs 50 and 60, respectively, each set being effective to add or subtract a given increment X from the total axial dimension of the assembled stack corresponding to the axial dimension X of the cam segment 80 which is included in that set.
  • Each unit or set comprises four disc sides, i.e., both sides of a keyed and both sides of a freely journaled disc, but it must be kept in mind that the four sides required to complete each set need not necessarily be carried on the same two discs.
  • the four disc sides of each set comprise the sides of three adjacent discs; i.e., both sides of one freely journaled disc and one side of each of the keyed discs on each side thereof. As shown in FIG. 1,
  • FIGS. 5 to 9 the positionsof the control lug 110 and of the stop lug 120 on the interrupter element are superimposed.
  • FIG. 4 illustrates the relative position of keyed and freely joumaled discs in a set while the solenoid corresponding thereto has been energized resulting in an overlap of the cam segment 80 and follower block 97 so that the increment X is added to the stack dimension.
  • the solenoid controlling the interrupter element remains energized, the control lug 110 will continue to track the outer cam surface 76 of the control groove 74 in the keyed disc 50 and the system will remain unchanged with both discs 50 and 60 coupled together frictionally and turning with the shaft because of the key 73 on the disc 50.
  • the preferential time for a change in the actuation of the solenoid 104 occurs when the control lug 110 occupies the narrow portion 77 of the control cam groove 74 since then no immediate motion of the interrupter will occur and noise and vibration will be minimized. If the solenoid 104 is deenergized in the position of parts shown in FIG. 5, the control lug will then track the inner cam surface 75. With the shaft 25 turning clockwise, as viewed in FIGS. 5-9, 180 of shaft rotation will transpire until the stop lug 120 contacts the inner stop surface 93 on the freely joumaled disc 60.
  • the stop lug 120 will engage the inner stop surface 93 and constrain the freely joumaled disc 60 from rotation thus changing the relative angular po sitions of the discs 50 and 60 and shifting the follower block 97 out of engagement with the cam segment 80 and against the face 82 of the keyed disc.
  • the increment X equal to the axial dimension of the cam seg ment 80 will thus be subtracted from the total axial dimension of the stack.
  • control lug 110 will continue to track the inner cam surface 75 of the contfol groove 74 and no further change will occur as to the angular relationship between the discs 50 and 60 because the cam groove 74 will continue to shift the stop lug 120 clear of the abutment 93 during each revolution of the shaft.
  • the control lug 110 occupies the narrow portion 77 of the control cam broove 74 in the position of parts shown in FIG. 7. If in this position of parts the solenoid 104 is energized, the control lug 110 will thereafter track the outer cam surface 76 of the control groove 74 and after 180 of shaft rotation the stop lug 120 will engage the outer stop abutment surface 94 as shown in FIG. 8. During the subsequent approximately 180 of shaft rotation, the stop lug 120 will continue to engage the abutment surface 94 to constrain the freely journaled disc from rotation.
  • FIG. 2 The disc positions in which an increment X is added and in which an increment X is subtracted from the total axial dimension of the stack is shown in FIG. 2.
  • the axial cam segment 80 and camfollower 97 are shifted into engagement, the axial dimension of the cam segment 80 is added as indicated by +X.
  • the cam follower 97 abuts the keyed disc face 82 and the axial dimension of the cam segment 80 is subtracted as indicated by X.
  • the sets of the keyed and freely journaled discs, each with an individual solenoid controlled interrupter may be controlled individually by selective actuation of the solenoid thereof to add or subtract the axial increment represented by the dimension of the respective cam segments 80 from the collective axial dimension of the stack.
  • the solenoids may be activated selectively by any known system or arrangement, such system not forming a direct part of this invention.
  • that set of discs which includes the fixed keyed disc 50 will carry a cam segment 80 with the smallest axial dimension X and the other sets will be arranged in an order from the fixed keyed disc in proportion to the magnitude of the axial dimension X.
  • the interrupters will be moved sideways the least amount during the operation of the adder mechanism.
  • this adder mechanism responds only to changes in pattern information. In the intervals between changes, the discs simply rotate in unison. In contrast with other known adding mechanism which automatically return to a base point or zero setting after each repetitive cycle of operation, the present adder mechanism is advantageous in that the wear incident to machine operation is greatly reduced. The present adder mechanism, however, retains the advantage usually present in return to zero systems that the response to any pattern signal will always reflect an absolute relationship with a base point or zero of the system.
  • any force applied to the interrupter element by the stop abutments will act in a direction substantially perpendicular to the solenoid armature rod 102 on which the interrupter element is swiveled.
  • Such forces applied by the stop abutments will occur incident to the output of the adder mechanism and will vary considerably according to the .work which the adder mechanism must perform. These forces will be derived from the arm shaft and not from the solenoids 104 or springs 121.
  • a rotary adder mechanism comprising a frame, a rotary drive shaft journaled in said frame, a plurality of discs stacked coaxially on said drive shaft, at least one of said discs being keyed to said drive shaft to rotate in synchronism therewith, and at least one of said discs being freely journaled on said drive shaft, means for frictionally coupling said keyed and freely journaled discs for rotation together, interengageable axial cam segments formed on adjacent keyed and freely journaled discs for movement into and out of engagement responsive to relative angular movement of said keyed and freely journaled discs, output means responsive to the total axial dimension of said plurality of said stacked discs, and control means carried on said frame for selectively preventing rotation of said freely journaled disc relative to said keyed disc to impart relative angular movement to said keyed and freely journaled discs.
  • a rotary adder mechanism as set forth in claim 1 in which said control means includes stop abutment means formed on said freely journaled discs, and an interrupter element carried by 'said frame and shiftable into and out of blocking engagement with said stop abutment means i 3.
  • a rotary adder mechanism as set forth in claim 2 in which means are provided responsive to a signal generated externally of said adder mechanism for shifting said interrupter element into blocking engagement with said stop abutment means, and in which means are provided on said keyed disc for automatically shifting said interrupted element out of blocking engagement with said stop abutment means.
  • a rotary adder mechanism as set forth in claim 3 in which two stop abutments are provided on said freely journaled disc, in which said means for shifting said interrupter element into blocking engagement with said stop abutment means is responsive to two different signals generated externally of said adder mechanism for selectively shifting said interrupter element into blocking engagement with either of said two stop abutments, and in which said means on said keyed disc for automatically shifting said interrupter element out of blocking engagement with said stop abutment means is arranged to effect that relative angular position between said keyed and freely rotatable discs in which said axial cam segments are in engagement after one of said stop abutments has been engaged by said interrupter element, and arranged to effect that relative angular position of said keyed and freely rotatable discs in which said axial cam segments are out of engagement after the other of said stop abutments has been engaged by said interrupter element.
  • a rotary adder mechainsm as set forth in claim 1 in which a plurality of sets of interengageable axial cam segments are provided, each set being carried on a separate pair of adjacent keyed and freely journaled discs.
  • each set of interengageable axial cam segments is individually regulated by a separate one of said control means, and in which said output means is responsive to the total axial dimension of the discs stacked on said drive shaft as influenced by said axial cam segments collectively.
  • a rotary adder mechanism as set forth in claim 6 in which the cam segments of each set contribute to dimensional change axially of the stack which differ one from the other in a binary arithmatic sequence.
  • a rotary adder mechanism as set forth in claim 3 in which said means responsive to a signal generated externally of said adder mechanism for shifting said interrupter element into blocking engagement with said stop abutment means conprises an electromagnetic actuator responsive to electric pattern signals to shift said interrupter element in one direction, and in which said means on said keyed disc for automatically shifting said interrupter element out of blocking engagement with said stop abutment means comprises a control cam surface formed on said keyed disc.
  • a rotary adde'r mechanism as set forth in claim 4 in which said means for shifting said interrupter element into blocking engagement with said stop abutment means comprises an electromagnetic actuator effective to shift said interrupter element in one direction in response to a signal comprising the presence of an electric potential applied to said electromagnetic and spring means effective to shift said interrupter element in the opposite direction in response to a signal comprising the absence of an electric potential applied to such electromagnet, and in which said means on said keyed disc for automatically shifting said interrupter element out of blocking relation with said stop abutment means comprises a first control cam surface engageable with said interrupter element when said interrupter element is under the influence of said electromagnetic actuator, and a second control cam surface engageable with said interrupter element when said interrupter element is under the influence of said spring means.
  • An adder mechanism comprising a circularly moving drive shaft, a first disc drivingly engaged with said drive shaft for circular movement in synchronism therewith, a second disc arranged adjacent to said first disc and freely journaled on said drive shaft, an interrupted element arranged alongside said discs and formed with a stop lug and control lug, a pair of angularly spaced stop abutments carried on said second disc, said stop abutments being located in suffciently different radial positions on said second disc so as to accommodate said interrupter element stop lug in the radial clearance space therebetween, said first disc being formed with control cam surfaces tracked by said interrupter element control lug, said control cam surfaces including one segment constraining said control lug in a position in which said stop lug occupies the radial clearance space between said stop abutments on said second disc, and said control cam surface including another segment in which said control lug is free to be moved selectively into the path of either of said stop abutments, means for shifting said interrupter element stop lug selectively into

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  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
US00379535A 1973-07-16 1973-07-16 Electromechanical disc adder mechanisms Expired - Lifetime US3812729A (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
US00379535A US3812729A (en) 1973-07-16 1973-07-16 Electromechanical disc adder mechanisms
JP49051082A JPS5027648A (es) 1973-07-16 1974-05-08
CA202,055A CA994174A (en) 1973-07-16 1974-06-10 Electromechanical disc adder mechanisms
GB2619474A GB1465806A (en) 1973-07-16 1974-06-13 Electro-mechanical disc adder mechanisms
IT24589/74A IT1015525B (it) 1973-07-16 1974-06-28 Meccanismi sommatori a dischi elettrodomestici
ES427867A ES427867A1 (es) 1973-07-16 1974-07-02 Un mecanismo sumador rotativo para influir selectivamente en el funcionamiento de medios de formacion de puntos de unamaquina de coser.
DE2432062A DE2432062A1 (de) 1973-07-16 1974-07-04 Elektromechanischer scheiben-rechenmechanismus
AU70834/74A AU7083474A (en) 1973-07-16 1974-07-04 Electromechanical disc
CH925974A CH577055A5 (es) 1973-07-16 1974-07-05
FR7423988A FR2238001B3 (es) 1973-07-16 1974-07-10
BR5758/74A BR7405758D0 (pt) 1973-07-16 1974-07-12 Mecanismo somador rotativo
SE7409247A SE398760B (sv) 1973-07-16 1974-07-15 Roterande kamskiveanordning
DD179926A DD114638A5 (es) 1973-07-16 1974-07-15
AR254709A AR201509A1 (es) 1973-07-16 1974-07-16 Mecanismo sumador rotativo aplicable para influir selectivamente en el funcionamiento de medios de formacion de puntos de una maquina de coser

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Application Number Priority Date Filing Date Title
US00379535A US3812729A (en) 1973-07-16 1973-07-16 Electromechanical disc adder mechanisms

Publications (1)

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US3812729A true US3812729A (en) 1974-05-28

Family

ID=23497661

Family Applications (1)

Application Number Title Priority Date Filing Date
US00379535A Expired - Lifetime US3812729A (en) 1973-07-16 1973-07-16 Electromechanical disc adder mechanisms

Country Status (14)

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US (1) US3812729A (es)
JP (1) JPS5027648A (es)
AR (1) AR201509A1 (es)
AU (1) AU7083474A (es)
BR (1) BR7405758D0 (es)
CA (1) CA994174A (es)
CH (1) CH577055A5 (es)
DD (1) DD114638A5 (es)
DE (1) DE2432062A1 (es)
ES (1) ES427867A1 (es)
FR (1) FR2238001B3 (es)
GB (1) GB1465806A (es)
IT (1) IT1015525B (es)
SE (1) SE398760B (es)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3929081A (en) * 1975-01-24 1975-12-30 Singer Co Electro mechanical adder mechanism
US4068604A (en) * 1975-05-28 1978-01-17 Husqvarna Ab Sewing machine
US4074641A (en) * 1974-06-13 1978-02-21 Lars Helge Gottfrid Tholander Sewing machine
US4086861A (en) * 1977-02-16 1978-05-02 The Singer Company Electro-mechanical actuator
CN100432523C (zh) * 2006-11-03 2008-11-12 河南理工大学 机械式行程限位器

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US125394A (en) * 1872-04-09 Improvement in sewing-machines for button-holes
US767480A (en) * 1904-02-24 1904-08-16 Nat Machine Co Buttonhole-sewing machine.
US2086523A (en) * 1935-02-05 1937-07-13 John O Burdette Reproducing mechanism
US2747417A (en) * 1955-02-03 1956-05-29 Davis Tool & Eng Co Complex motion-generating mechanism
US2917591A (en) * 1957-05-10 1959-12-15 Gen Time Corp Switch actuating timer
US3055325A (en) * 1957-02-26 1962-09-25 Nippon Sewing Machine Mfg Co L Sewing machine
US3062164A (en) * 1958-09-08 1962-11-06 Riccar Sewing Machine Co Ltd Device for automatic zigzag sewing
US3690011A (en) * 1970-11-12 1972-09-12 Burchell Wesley B Variable pattern recorder

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US125394A (en) * 1872-04-09 Improvement in sewing-machines for button-holes
US767480A (en) * 1904-02-24 1904-08-16 Nat Machine Co Buttonhole-sewing machine.
US2086523A (en) * 1935-02-05 1937-07-13 John O Burdette Reproducing mechanism
US2747417A (en) * 1955-02-03 1956-05-29 Davis Tool & Eng Co Complex motion-generating mechanism
US3055325A (en) * 1957-02-26 1962-09-25 Nippon Sewing Machine Mfg Co L Sewing machine
US2917591A (en) * 1957-05-10 1959-12-15 Gen Time Corp Switch actuating timer
US3062164A (en) * 1958-09-08 1962-11-06 Riccar Sewing Machine Co Ltd Device for automatic zigzag sewing
US3690011A (en) * 1970-11-12 1972-09-12 Burchell Wesley B Variable pattern recorder

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074641A (en) * 1974-06-13 1978-02-21 Lars Helge Gottfrid Tholander Sewing machine
US3929081A (en) * 1975-01-24 1975-12-30 Singer Co Electro mechanical adder mechanism
US4068604A (en) * 1975-05-28 1978-01-17 Husqvarna Ab Sewing machine
US4086861A (en) * 1977-02-16 1978-05-02 The Singer Company Electro-mechanical actuator
CN100432523C (zh) * 2006-11-03 2008-11-12 河南理工大学 机械式行程限位器

Also Published As

Publication number Publication date
CA994174A (en) 1976-08-03
ES427867A1 (es) 1976-08-01
JPS5027648A (es) 1975-03-20
CH577055A5 (es) 1976-06-30
SE7409247L (sv) 1975-01-17
DE2432062A1 (de) 1975-02-06
IT1015525B (it) 1977-05-20
DD114638A5 (es) 1975-08-12
BR7405758D0 (pt) 1975-05-20
SE398760B (sv) 1978-01-16
AU7083474A (en) 1976-01-08
FR2238001A1 (es) 1975-02-14
GB1465806A (en) 1977-03-02
FR2238001B3 (es) 1977-05-06
AR201509A1 (es) 1975-03-21

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