Drill mounting device for backhoe attachments

Details Drill mounting device for backhoe attachments Drill mounting device for backhoe attachments

1977-02-09

1978-07-11

Hafer, Robert A.

Tool driving or impacting

Automatic control of power operated means

Tool advance causing or controlling means

173 28, 173 31, B23Q 500

Patent

active

040995798

ABSTRACT:
A device for mounting a hand operated drill such as a rotary or sinker drill on a backhoe attachment for tractors and trucks including a slide mounted tool carrier attached to a roller chain loop mounted on a mast assembly. The mast assembly is either removably mounted on the bucket of the backhoe attachment or to the bucket linkage.
High cycle oscillation is dampened by a shock absorber booster spring assembly.
The spring assembly may also be used in combination with a fluid control valve mechanism to automatically adjust the drilling and vance.
A trunnion assembly may be provided to increase the positionability of the mounting device.
A flow control valve connected to the spring assembly automatically maintains constant thrust values to the drill.

REFERENCES:
patent: 2969844 (1961-01-01), Hamrick
patent: 3205951 (1965-09-01), Pyles
patent: 3565184 (1971-02-01), Gustafsson
patent: 3664436 (1972-05-01), Beagan
patent: 3684035 (1972-08-01), Wills
patent: 3702712 (1972-11-01), Cairns
patent: 3915501 (1975-10-01), Cobb et al.

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