GB593967A - Improvements relating to machines employed in earth moving, levelling and grading operations - Google Patents

Improvements relating to machines employed in earth moving, levelling and grading operations

Info

Publication number
GB593967A
GB593967A GB1581245A GB1581245A GB593967A GB 593967 A GB593967 A GB 593967A GB 1581245 A GB1581245 A GB 1581245A GB 1581245 A GB1581245 A GB 1581245A GB 593967 A GB593967 A GB 593967A
Authority
GB
United Kingdom
Prior art keywords
frame
blade
jack
skid
levelling
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
GB1581245A
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.)
Bomford and Evershed Ltd
Original Assignee
Bomford and Evershed Ltd
Filing date
Publication date
Application filed by Bomford and Evershed Ltd filed Critical Bomford and Evershed Ltd
Publication of GB593967A publication Critical patent/GB593967A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/815—Blades; Levelling or scarifying tools
    • E02F3/8157—Shock absorbers; Supports, e.g. skids, rollers; Devices for compensating wear-and-tear, or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Operation Control Of Excavators (AREA)

Abstract

593,967. Scraping-apparatus. BOMFORD & EVERSHED, Ltd., and BOMFORD, D. R. June 21, 1945, No. 15812. [Class 68 (i)] The blade-carrying frame 1 of a bulldozer is pivoted about trunnions on a tractor, the blocks being formed in two sections 3 and 3a, whilst the depth of the cutting edge 5c of the blade 5 is adjusted by means of a hydraulic jack 14 which is pivotally mounted on the frame 1 and which acts on a structure 9 connecting a skid 8 to the frame 1. The skid 8 is disposed on the centre line of the machine. To raise the blade, liquid is pumped from a reservoir 17 by a pump 18 into the jack exerting a force on the piston 13b which causes the skid to exert an up-thrust so causing the frame to turn about the trunnions. The pump may be incorporated with the jack and operated from the driver's position by a link system. The blade is lowered by releasing liquid from the jack by means of a valve 20. The transverse angle of the blade 5 can be adjusted by inserting spacing members between it and the frame. The jack may be replaced by a toggle-lever-like linkage. According to the Provisional Specification, the hydraulic jack is mounted on the structure 9, the piston acting on the frame 1.
GB1581245A 1945-06-21 Improvements relating to machines employed in earth moving, levelling and grading operations Expired GB593967A (en)

Publications (1)

Publication Number Publication Date
GB593967A true GB593967A (en) 1947-10-30

Family

ID=1731815

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1581245A Expired GB593967A (en) 1945-06-21 Improvements relating to machines employed in earth moving, levelling and grading operations

Country Status (1)

Country Link
GB (1) GB593967A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691228A (en) * 1952-05-27 1954-10-12 Roy F Smith Bulldozer blade and scoop mounting
US3201878A (en) * 1963-05-10 1965-08-24 Peerless Gear & Engineering In Plow attachment for vehicles
US10584464B2 (en) 2018-10-10 2020-03-10 John V. Armstrong Box blade earth grading implement

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2691228A (en) * 1952-05-27 1954-10-12 Roy F Smith Bulldozer blade and scoop mounting
US3201878A (en) * 1963-05-10 1965-08-24 Peerless Gear & Engineering In Plow attachment for vehicles
US10584464B2 (en) 2018-10-10 2020-03-10 John V. Armstrong Box blade earth grading implement

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