GB544984A - Improvements relating to mechanical excavators - Google Patents

Improvements relating to mechanical excavators

Info

Publication number
GB544984A
GB544984A GB1755840A GB1755840A GB544984A GB 544984 A GB544984 A GB 544984A GB 1755840 A GB1755840 A GB 1755840A GB 1755840 A GB1755840 A GB 1755840A GB 544984 A GB544984 A GB 544984A
Authority
GB
United Kingdom
Prior art keywords
scoop
arm
pivoted
jib
link
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
GB1755840A
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.)
Priestman Brothers Ltd
Original Assignee
Priestman Brothers Ltd
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 Priestman Brothers Ltd filed Critical Priestman Brothers Ltd
Priority to GB1755840A priority Critical patent/GB544984A/en
Publication of GB544984A publication Critical patent/GB544984A/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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/42—Drives for dippers, buckets, dipper-arms or bucket-arms
    • 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
    • E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
    • E02F3/36—Component parts
    • E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets

Abstract

544,984. Excavators. PRIESTMAN BROS., Ltd., and BROCKLEBANK, N. Dec. 11, 1940, Nos. 17558/40 and 21042/41. [Class 68 (i)] In an excavator comprising a crane having an arm 14 pivoted to the end of the jib 18 to swing in a vertical plane lengthwise of the jib and carrying a scoop 10 at its lower end, the scoop is pivoted to the arm 14 and its angular position relative to the arm is controlled by a link 26 connecting the scoop to a point 30 on the jib displaced from the pivotal axis 17 of the arm; the pivotal points 16, 17, 28, 30 may form the comers of a parallelogram or otherwise. An ejector plate 34 may be pivoted to the scoop at 28 so as to sweep along the arcuate bottom 12 of the scoop, being connected by a link 36 to a lug 38 on arm 14 so as to recede into the scoop as the cut proceeds, and eject the spoil in the reverse movement. In Fig. 2 the link 36 is formed as a turnbuckle for adjustment, and the scoop is adjustable relatively to arm 14 by means of arcuate slots 40; a wedge sole plate 44 is provided carrying a taper rib of semi-circular section which forms in groove in the trench to receive pipes, cable &c. Instead of making the scoop adjustable, the sole plate 44 may be pivoted at 48 and adjustably held by a bolt 62, wedges 64 being interposed between the sole plate and scoop; the rib 46 is interchangeably held by screws 56 and bolts 58.
GB1755840A 1940-12-11 1940-12-11 Improvements relating to mechanical excavators Expired GB544984A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1755840A GB544984A (en) 1940-12-11 1940-12-11 Improvements relating to mechanical excavators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1755840A GB544984A (en) 1940-12-11 1940-12-11 Improvements relating to mechanical excavators

Publications (1)

Publication Number Publication Date
GB544984A true GB544984A (en) 1942-05-06

Family

ID=10097276

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1755840A Expired GB544984A (en) 1940-12-11 1940-12-11 Improvements relating to mechanical excavators

Country Status (1)

Country Link
GB (1) GB544984A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2776060A (en) * 1953-08-06 1957-01-01 Harold W Compton Working device controlling mechanism for materials handling and excavating machines
US2852149A (en) * 1955-02-02 1958-09-16 D App Mecano Hydrauliques Soc Hoist for use as loading apparatus, crane and excavator
US4271614A (en) * 1979-10-22 1981-06-09 J. I. Case Company Floating soil fracture tool

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2776060A (en) * 1953-08-06 1957-01-01 Harold W Compton Working device controlling mechanism for materials handling and excavating machines
US2852149A (en) * 1955-02-02 1958-09-16 D App Mecano Hydrauliques Soc Hoist for use as loading apparatus, crane and excavator
US4271614A (en) * 1979-10-22 1981-06-09 J. I. Case Company Floating soil fracture tool

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