Knight's Mechanical Encyclopedia, K., Knob-latch.

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19th-Century American

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Knob-latch.

One in which the bolt is retractable by the knob or rotary handle, in contradistinction to one which is moved by a key. In the example, the latch-bolt C rests upon a horizontal bar h, one end of which is pivoted to the lockcase, while the other, supported by a spring, protrudes through an opening in the edge of the case, so that the bolt can be disengaged from the arms of the hub by simply depressing the end of the bar.

1877.

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Knight's Mechanical Encyclopedia
Knight, Ed.

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Knob-latch.

Knight's Mechanical Encyclopedia Knight, Ed.

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Knob-latch.

Knight's Mechanical Encyclopedia
Knight, Ed.