| http://www.w3.org/ns/prov#value | - In a ratchet mechanism, the combination of a memher having a head and a second member having a head portion rotatably mounted in said head, one of the aforementioned members having a cylindrical surface formed with radially extending teeth confronting the other member inside said head, a pawl carried by said other member and positionedlto engage and disengage said radially extending teeth, said pa
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