GB501621A - Improvements in and relating to the control of electrically driven reciprocating machines - Google Patents
Improvements in and relating to the control of electrically driven reciprocating machinesInfo
- Publication number
- GB501621A GB501621A GB30613/37A GB3061337A GB501621A GB 501621 A GB501621 A GB 501621A GB 30613/37 A GB30613/37 A GB 30613/37A GB 3061337 A GB3061337 A GB 3061337A GB 501621 A GB501621 A GB 501621A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- motor
- operated
- relay
- switches
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/0075—Controlling reciprocating movement, e.g. for planing-machine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
501,621. Control of motors. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 8, 1937, No. 30613. Convention date, Nov. 10, 1936. [Class 38 (iii)] Continuous reversal.-In a system for controlling a reciprocating machine driven by a reversible electric motor M and comprising a pair of relay operated switches F, Fs, B, Bs which are operated alternately to connect the motor for different directions of rotation these switches are each provided with a holding circuit adapted to be completed through a different one of a pair of mechanically separate drum switches St1, St2 biassed to their off positions. Motion of the machine in one direction causes one of a pair of adjustably spaced cams 1 or 2 to engage a lever arm 11 or 21 attached to the appropriate drum switch St1 or St2 and turn this switch through stepped positions in the first of which a reduction of the motor speed is effected and in the second of which the holding circuit for the relay F8 or Be of the closed relay operated switch F or B is broken and the energizing circuit for the relay Be or Fa of the other relay operated switch is closed to effect closure of this switch and reversal of the motor. A holding circuit for this closed relay operated switch is made through the other drum switch which is then similarly operated by the other cam 2 or 1 on reverse movement of the machine to reduce the motor speed and subsequently again reverse the motor. An emergency switch is operated to stop the motor if either of the switch drums is moved to a third position. The cams 1, 2 may be adjusted to lie so close together that the respective lever arms 1<1>, 21 are always in contact with them and the drum switches are never allowed to return to their off positions whereby a short reciprocating motion of the machine may be obtained with the motor running at its reduced speed in alternate directions.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE501621X | 1936-11-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB501621A true GB501621A (en) | 1939-03-02 |
Family
ID=6545791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30613/37A Expired GB501621A (en) | 1936-11-10 | 1937-11-08 | Improvements in and relating to the control of electrically driven reciprocating machines |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB501621A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3247434A (en) * | 1957-01-30 | 1966-04-19 | Robert L Littwin | Electrical control means |
-
1937
- 1937-11-08 GB GB30613/37A patent/GB501621A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3247434A (en) * | 1957-01-30 | 1966-04-19 | Robert L Littwin | Electrical control means |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2056174A (en) | Automatic closure operating device | |
GB501621A (en) | Improvements in and relating to the control of electrically driven reciprocating machines | |
GB711751A (en) | Improvements in and relating to directional electric switches | |
US2611116A (en) | Parking control for windshield wipers | |
US2330648A (en) | Reversing split phase motor control | |
US3046462A (en) | Electric motor control | |
US3147420A (en) | Electric motor braking control system | |
US2007591A (en) | Motor reversing mechanism | |
US1937404A (en) | Alternating current machine and system of control therefor | |
GB513193A (en) | Improvements in amusement devices | |
US1947263A (en) | Motor controller | |
US2537155A (en) | Electric motor indexing and reversing circuit | |
GB393067A (en) | Improvements relating to electrical controllers | |
GB406194A (en) | Improvements in or relating to driving gear for machines such as looms | |
GB174922A (en) | Improvements in controlling devices for the motors of electrically driven vehicles | |
GB399483A (en) | Improvements relating to electric motor control gear | |
GB475798A (en) | Improvements in or relating to electric motor controllers | |
GB526750A (en) | Improvements in and relating to the control of electric motors | |
US1088657A (en) | Reversing and controlling gear. | |
GB836900A (en) | Improvements relating to control systems for electrically-propelled vehicles | |
GB497195A (en) | Improvements in and relating to electric switches responsive to direction of rotary motion | |
GB371127A (en) | Improvements in or relating to control apparatus for electric motors | |
US2022862A (en) | Electric motor controller | |
GB204105A (en) | Improvements in and relating to systems of electric motor control | |
FR2272019A1 (en) | Hoist limit switch - has rotary cam acting against contactor controlling respective motion |