Definition of Ratchet drill. Meaning of Ratchet drill. Synonyms of Ratchet drill
Here you will find one or more explanations in English for the word Ratchet drill.
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Definition of Ratchet drill
Ratchet drill Ratchet Ratch"et, n. [Properly a diminutive from the same word
as rack: cf. F. rochet. See 2d Ratch, Rack the
instrument.]
1. A pawl, click, or detent, for holding or propelling a
ratchet wheel, or ratch, etc.
2. A mechanism composed of a ratchet wheel, or ratch, and
pawl. See Ratchet wheel, below, and 2d Ratch.
Ratchet brace (Mech.), a boring brace, having a ratchet
wheel and pawl for rotating the tool by back and forth
movements of the brace handle.
Ratchet drill, a portable machine for working a drill by
hand, consisting of a hand lever carrying at one end a
drill holder which is revolved by means of a ratchet wheel
and pawl, by swinging the lever back and forth.
Ratchet wheel (Mach.), a circular wheel having teeth,
usually angular, with which a reciprocating pawl engages
to turn the wheel forward, or a stationary pawl to hold it
from turning backward.