Wedge arrangement for removably affixing a work tool or work too

Mining or in situ disintegration of hard material – Miscellaneous

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Details

82 36R, 175374, 403381, 407101, 407108, E21C 1300

Patent

active

040572943

ABSTRACT:
A wedge arrangement for removably affixing a work tool or work tool holder to a base member on mining, road working or earth moving machinery, and the like, and being particularly useful in the mining, road planing and earth digging areas. The arrangement is such that the removable member may be readily replaced and wear and tear on the base member greatly reduced to the extent that such base member will not be destroyed or otherwise rendered useless; such base member may be a part which is permanently secured to the basic machine or it may in fact be the machine itself or some integral part thereof. The base member is preferably provided with a slot of a size sufficient to receive both the removable member and a wedge element; such member and element may be placed within the slot from above thereof, lateral entry of the removable member and wedge element into the slot often being unnecessary. Means are provided to move the wedge element so as to effect a frictional engagement between the removable member and the base member to effect an interference fit in which there is no relative motion between these members and thus virtually no wear. (It is possible to reverse this arrangement and provide the removable member with the slot and the base member with a suitable male element which, along with the wedge element, will be received in the slot.) The removable member may be provided with a bit, road planing device or digging tooth, which working elements may in turn be removably affixed to and/or within the removable part.

REFERENCES:
patent: 820530 (1906-05-01), Sturm
patent: 2281706 (1942-05-01), Montgomery et al.
patent: 2547789 (1951-04-01), Skeel
patent: 3032152 (1962-05-01), Titsler
patent: 3107562 (1963-10-01), Miller
patent: 3397013 (1968-08-01), Krekeler
patent: 3489042 (1971-01-01), Papp
patent: 3563325 (1971-02-01), Miller
patent: 3575072 (1971-04-01), Silver et al.
patent: 3579936 (1971-05-01), Andersson et al.
patent: 3633949 (1972-01-01), Pfluger
patent: 3834764 (1974-09-01), Krekeler

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