Reversible puller

• US 3,964,149 A
• Filed: 05/05/1975
• Issued: 06/22/1976
• Est. Priority Date: 05/05/1975
• Status: Expired due to Term

• Current Assignee: Stanley Works Limited (Stanley Black & Decker, Inc.)
• Original Assignee: Ingersoll-Rand Company (Trane Technologies plc)
• Inventors: Hugh, Melvin D.
• Primary Examiner(s): Jones, Jr., James L.
• Application Number:
  US05/574,387
• Time in Patent Office: 414 Days
• Field of Search: 29/258, 29/259, 29/260, 29/261
• US Class Current: 29/261
• CPC Class Codes: B25B 27/023 using screws
• CPC Class Codes: B25B 27/062 using screws
• CPC Class Codes: Y10T 29/5387 Pivotal arms

Abstract

This invention relates to devices for removing gears, bearings, sleeves, and the like, from a shaft or cylinder. The invention relates to an improved device for this purpose that combines a reversible gear and sleeve puller in one tool. The jaws of the device are fully adjustable and secured relative to the work piece.

Claims

1. A pulling device comprising:

a cross block;

a forcing screw threadably engaged in said cross block for relative perpendicular movement thereto;

a plurality of pivot blocks disposed on said cross block for relative longitudinal movement thereto;

a gripping jaw having a work engaging surface on one side of said jaw pivotally mounted on each of said pivot blocks;

means to adjustable secure said gripping jaw from pivotal rotation in both the clockwise and counterclockwise directions;

said pivot blocks are reversible on said cross block and said gripping jaws are reversible in said pivot block;

said gripping jaws have bearing surfaces on both sides of the jaw about the pivot for engagement with said means to adjustably secure said gripping jaw from rotation about its pivot to allow for reversal of said gripping jaw and its secure adjustment in both reversible positions; and

said means to adjustably secure said gripping jaw is two positioning screws and wherein one of said positioning screws secures said gripping jaw against rotation about its pivot in a clockwise direction and the other of said positioning screws secures said gripping jaws against rotation about its pivot in a counterclockwise direction.

2. The pulling device of claim 1 wherein:

said cross block is substantially of rectangular cross section; and

said pivot blocks have a matching bore of rectangular cross section for mounting on said cross block and allowing said pivot blocks to slide longitudinally on said cross block while preventing both perpendicular translation and pivotal rotation about the longitudinal axis of said cross block.

3. The pulling device of claim 2 wherein:

said pivot blocks are adjustably secured against longitudinal translation by means of a locking screw.

4. The pulling device of claim 1 wherein:

said gripping jaws have a work engaging surface generally perpendicular to the longitudinal axis of said jaws and positioning surfaces generally parallel to the longitudinal axis of said jaws for engagement with said means to adjustably secure said gripping jaw.

5. The pulling device of claim 4 wherein:

the work engaging surface of said gripping jaws is at an angle of 3°

to 7°

from the perpendicular to the longitudinal axis of said jaw.