GB1354157A – Speed control device for an electric motor in a sewing machine
– Google Patents
GB1354157A – Speed control device for an electric motor in a sewing machine
– Google Patents
Speed control device for an electric motor in a sewing machine
Info
Publication number
GB1354157A
GB1354157A
GB5223871A
GB5223871A
GB1354157A
GB 1354157 A
GB1354157 A
GB 1354157A
GB 5223871 A
GB5223871 A
GB 5223871A
GB 5223871 A
GB5223871 A
GB 5223871A
GB 1354157 A
GB1354157 A
GB 1354157A
Authority
GB
United Kingdom
Prior art keywords
switch
sewing machine
shunting
members
control device
Prior art date
1971-01-11
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
Application number
GB5223871A
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.)
Necchi SpA
Original Assignee
Necchi 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.)
1971-01-11
Filing date
1971-11-10
Publication date
1974-06-05
1971-11-10
Application filed by Necchi SpA
filed
Critical
Necchi SpA
1974-06-05
Publication of GB1354157A
publication
Critical
patent/GB1354157A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
H02P7/288—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using variable impedance
Abstract
1354157 Control of A.C. motors NECCHI SpA 10 Nov 1971 [11 Jan 1971] 52238/71 Heading H2J The driving motor 16 of a sewing machine is controlled by an assembly 14 having a variable resistance 20 which is progressively cut out of circuit until it is short circuited by closure of a switch 23, the members 20, 23 being coupled to a control pedal 24 which may be further depressed, after actuation of members 20, 23, to close a switch 21 shunting a diode 22. The latter operation raises the motor to full speed providing that a switch 19 shunting a further diode 18 is also closed. Switch 19 may be opened at the start of a sewing operation requiring reduced speed, but if it is not so opened the reduced speed may be readily obtained at any time during the operation by release of the pedal 24 to open switch 21. Connectors 25, 26 ensure that the diodes 18, 22 are always poled in the same direction when connecting the assembly 14 to the machine.
GB5223871A
1971-01-11
1971-11-10
Speed control device for an electric motor in a sewing machine
Expired
GB1354157A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
IT4290171
1971-01-11
Publications (1)
Publication Number
Publication Date
GB1354157A
true
GB1354157A
(en)
1974-06-05
Family
ID=11254479
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB5223871A
Expired
GB1354157A
(en)
1971-01-11
1971-11-10
Speed control device for an electric motor in a sewing machine
Country Status (8)
Country
Link
AT
(1)
AT312109B
(en)
BE
(1)
BE777172A
(en)
CH
(1)
CH545036A
(en)
DE
(1)
DE2200999A1
(en)
ES
(1)
ES396116A1
(en)
FR
(1)
FR2119421A5
(en)
GB
(1)
GB1354157A
(en)
SE
(1)
SE370298B
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
AT345969B
(en)
*
1973-10-03
1978-10-10
Kaltenbach & Voigt
DENTAL HANDPIECE
1971
1971-10-05
ES
ES396116A
patent/ES396116A1/en
not_active
Expired
1971-11-08
CH
CH1621971A
patent/CH545036A/en
not_active
IP Right Cessation
1971-11-10
GB
GB5223871A
patent/GB1354157A/en
not_active
Expired
1971-12-15
FR
FR7145005A
patent/FR2119421A5/fr
not_active
Expired
1971-12-22
BE
BE777172A
patent/BE777172A/en
unknown
1972
1972-01-03
SE
SE1972A
patent/SE370298B/xx
unknown
1972-01-07
AT
AT11472A
patent/AT312109B/en
not_active
IP Right Cessation
1972-01-11
DE
DE19722200999
patent/DE2200999A1/en
active
Pending
Also Published As
Publication number
Publication date
CH545036A
(en)
1973-11-30
AT312109B
(en)
1973-12-27
DE2200999A1
(en)
1972-07-20
SE370298B
(en)
1974-10-07
FR2119421A5
(en)
1972-08-04
ES396116A1
(en)
1974-04-16
BE777172A
(en)
1972-04-17
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(en)
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Legal Events
Date
Code
Title
Description
1974-10-02
PS
Patent sealed
1977-06-10
PLNP
Patent lapsed through nonpayment of renewal fees
