Importance

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Abstract

An apparatus for determining the depth of a recess formed in the end of articles such as headed fasteners having a first indexable article carrier with a plurality of article holders for supporting articles so that each article moves in a prescribed path as the article carrier is operated, a second indexable carrier mounted for synchronized motion with the first carrier having a plurality of reciprocable probes aligned with the article holders for engaging a recess of the articles, structure for incrementally indexing the carriers to position the article carrier alternatively in (a) a first position in which an article can be inserted therein from a supply, and (b) a second position spaced from the first position, a positioning mechanism for assuring registration of the probe free end and a recess on an article on the carrier as the probe free end and the carrier are relatively moved to the second position, structure for sequentially deploying the reciprocable probes into engagement with the articles, and a sensor for determining the degree of engagement of the reciprocable probes with the articles.

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First Claim