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Home Metal Working New-and-improved-ratchet-tool-with-rotatable-rotor-lock-and-rigid-shifter-finger

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 New and improved ratchet tool with rotatable rotor lock and rigid shifter finger

Details
Inventors: Farris, Jim L.;
Assignee:
Primary Examiner: Schmidt; Frederick R.
Assistant Examiner: Rachuba; M.
Attorney, Agent or Firm: Peoples, Jr.; Veo

An improved ratchet tool having a rotatable handhold, coupled with a shaft telescoped in a tubular handle is made more simple and more securely self-locking by the presence of a rotary lock device for the rotor that drives the tool and a rigid shifter finger offset radially from the shaft axis which projects from the end of the shaft into a recess within the rotary lock to rotate the lock to corresponding direction changing positions upon manual rotation of the handhold, while simultaneously securely locking the rotor against undesirable movement when under loaded torque.

DETAILED DESCRIPTION A ratchet handle embodying the principals of this invention is broadly designated in FIG.
1 of the drawings.
Reference numeral (1) designates the housing or outer body of the wrench handle having an oblonged surface opening (25) at its large end or tube, a surface slot (8) along its smaller cylindrical end, two parallel holes (7a) and (7b), and a generally circular inner wall surface throughout its smaller cylindrical end.
The inner surface (26) of the ratchet handle body (1) receives in telescoped relationship an elongated, transversely circular, solid shaft or shifter rod (12).
A tubular member (20) is telescoped over the outside of the small end of the housing (1).
Member (20) is integrally connected with shaft (12) by an end plate spacer (17), which is inserted within the large end of the tubular handhold (20), whose small hole (16) is aligned with the small hole of the end spacer (18) and the small hole of the shaft (14) to receive pin (15) that secures the integral connection as between these three members, the handhold tubular member (20), the end spacer (17), and the shaft (12).
Roll pins (4a) and (4b) fit securely through laterally bored holes (7a) and (7b), respectively, of the housing (1), and serve to retainably align the shaft by engagement with the groove (11) of the shaft as is more clearly demonstrated by the fractional cross-section shown in FIG.
3.
FIG.
1 furthermore, shows how the rotary lock (3) fits rotatably into the lower portion of the oblong opening (25) with the rotary locks cam surfaces (27a) and (27b) placed towards the top of the assembly.
The rotor (2) for driving the ratchet tool fits rotatably into the top portion of oblong opening (25).
The oblong or egg-shaped face (22) fits over the rotor and rotary lock so as to close opening (25) and said face is secured by screws (23a) and (23b) through openings (24a) and (24b) on said plate or face.
A ball member (6) is rollingly engaged to engage with a wavy spring (5), which rests in slot (8) of the ratchet wrench housing or body (1)



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