GB557303A - Improvements in or relating to drain digging machines and mole draining machines - Google Patents

Improvements in or relating to drain digging machines and mole draining machines

Info

Publication number
GB557303A
GB557303A GB1025742A GB1025742A GB557303A GB 557303 A GB557303 A GB 557303A GB 1025742 A GB1025742 A GB 1025742A GB 1025742 A GB1025742 A GB 1025742A GB 557303 A GB557303 A GB 557303A
Authority
GB
United Kingdom
Prior art keywords
rack
mole
machines
wheels
pinion
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
GB1025742A
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 GB1025742A priority Critical patent/GB557303A/en
Publication of GB557303A publication Critical patent/GB557303A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F5/00—Dredgers or soil-shifting machines for special purposes
    • E02F5/02—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches
    • E02F5/10—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables
    • E02F5/102—Dredgers or soil-shifting machines for special purposes for digging trenches or ditches with arrangements for reinforcing trenches or ditches; with arrangements for making or assembling conduits or for laying conduits or cables operatively associated with mole-ploughs, coulters

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Transplanting Machines (AREA)

Abstract

557,303. Mole ploughs &c. MILES, G. July 22, 1942, No. 10257. [Class 6 (i)] A mole or digging tool a is mounted on a main beam c pivoted at its front end to a secondary beam f carrying land-wheels h on an axle g. For raising the mole, a rack s pivoted to the beam c may be moved into engagement with a pinion o co-axial with a sprocket n chain-driven from a sprocket q in the hub of one of the wheels h. The rack is moved by a pin u projecting from a lever v. Excessive movement is prevented by a projection 11 on the rack which lifts the lever v and permits a spring-pressed plate 16 to force back the rack out of engagement with the pinion. At the same time a detent 12 on the main beam c rides over and rests on a support 14 on the beam f. The central part of the axle g is cranked to avoid interference with the movement of the beam c. For transport purposes wheels 18 and a drawbar 19 are attached to the front of the beam f. The rack may be fixed and the pinion movable.
GB1025742A 1942-07-22 1942-07-22 Improvements in or relating to drain digging machines and mole draining machines Expired GB557303A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1025742A GB557303A (en) 1942-07-22 1942-07-22 Improvements in or relating to drain digging machines and mole draining machines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1025742A GB557303A (en) 1942-07-22 1942-07-22 Improvements in or relating to drain digging machines and mole draining machines

Publications (1)

Publication Number Publication Date
GB557303A true GB557303A (en) 1943-11-15

Family

ID=9964523

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1025742A Expired GB557303A (en) 1942-07-22 1942-07-22 Improvements in or relating to drain digging machines and mole draining machines

Country Status (1)

Country Link
GB (1) GB557303A (en)

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