GB219133A - Improvements in or relating to coal cutters of the disc type - Google Patents

Improvements in or relating to coal cutters of the disc type

Info

Publication number
GB219133A
GB219133A GB1422523A GB1422523A GB219133A GB 219133 A GB219133 A GB 219133A GB 1422523 A GB1422523 A GB 1422523A GB 1422523 A GB1422523 A GB 1422523A GB 219133 A GB219133 A GB 219133A
Authority
GB
United Kingdom
Prior art keywords
collar
relating
disc type
contactor
magnet
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
Application number
GB1422523A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1422523A priority Critical patent/GB219133A/en
Publication of GB219133A publication Critical patent/GB219133A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21C—MINING OR QUARRYING
    • E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
    • E21C35/04—Safety devices
    • E21C35/043—Protection against overload during transfer of machines for slitting or completely freeing the mineral from the seam

Landscapes

  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geology (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

219,133. Pate, G., Mercer, J. H., and Laird, J. R. May 30, 1923. Ratchet gearing is controlled by means of an electromagnet 1 with an armature 2, formed as a collar on the pawl-actuating rod 3 and arranged so that, at the end of each stroke, the collar 2 closely approaches the magnet. The latter is in circuit with a contactor 5 of which the solenoid 6 is in series with the driving-motor armature 4 so that, as the load rises, the solenoid becomes more highly energized and the contactor is closed, thereby energizing the magnet 1 which attracts the collar 2 and renders the rod 3 inoperative.
GB1422523A 1923-05-30 1923-05-30 Improvements in or relating to coal cutters of the disc type Expired GB219133A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1422523A GB219133A (en) 1923-05-30 1923-05-30 Improvements in or relating to coal cutters of the disc type

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1422523A GB219133A (en) 1923-05-30 1923-05-30 Improvements in or relating to coal cutters of the disc type

Publications (1)

Publication Number Publication Date
GB219133A true GB219133A (en) 1924-07-24

Family

ID=10037295

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1422523A Expired GB219133A (en) 1923-05-30 1923-05-30 Improvements in or relating to coal cutters of the disc type

Country Status (1)

Country Link
GB (1) GB219133A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107903A (en) * 1961-10-06 1963-10-22 Goodman Mfg Co Cutting machine load control
US9065133B2 (en) 2007-01-25 2015-06-23 General Electric Company Cathode for an electrochemical cell

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3107903A (en) * 1961-10-06 1963-10-22 Goodman Mfg Co Cutting machine load control
US9065133B2 (en) 2007-01-25 2015-06-23 General Electric Company Cathode for an electrochemical cell

Similar Documents

Publication Publication Date Title
GB219133A (en) Improvements in or relating to coal cutters of the disc type
GB381299A (en) Improvements in or relating to friction drives
GB477661A (en) Improvements in or relating to flushing devices
DE530792C (en) Electromagnetic hammer
DE498903C (en) Electromagnetic telegraph relay with an armature held against a pole piece by a spring
DE367549C (en) Self-breaker for electromagnetically driven stepping mechanisms
DE503011C (en) Inductive train control with pulse and excitation windings arranged on the locomotive
GB513502A (en) Improvements in electro-magnetic indicators
GB1366311A (en) Electromagnetic actuating device
GB564351A (en) Improved electro-magnetic apparatus with tilting armatures, more especially tilting relays
GB612520A (en) Improvements in or relating to electric-magnets
AT120186B (en) Automatic oil pressure control and alarm device for internal combustion engines.
GB813975A (en) Control apparatus for internal combustion locomotives
GB315450A (en) Improvements in door controlling apparatus
GB301004A (en) Improvements in or connected with control mechanism for hydraulic power transmissiongearing
GB187593A (en)
GB532540A (en) Improvements in electric relays
GB245500A (en) Improvements relating to winding or hoisting systems
GB240338A (en) An electrically operated controlling-and distributing-device for liquids under pressure
GB524212A (en) Improvements in and relating to electric motor control systems
GB581881A (en) Improvements in or relating to torpedo firing mechanism
GB191209647A (en) Improvements in Electric Circuit Breakers and the like.
GB367883A (en) Improvements in and relating to the cooling of oil-immersed transformers or other apparatus
GB290528A (en) Improvements in or relating to travelling grates
GB435803A (en) Improvements in and relating to vehicle direction indicators