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US 3,970,323 AGranted
Chuck for drill
AssigneeMetabowerke KG Closs, Rauch, & Schnitzler
InventorAlbrecht Schnizler, Jr.
Life of this patent
Estimating the term…
Abstract
A drill chuck having a body adapted for connection to a spindle and a clamping member rotatable on the body and operable to actuate clamping jaws. Cooperating and selectively releasable elements of a spring loaded pawl and ratchet device are carried by the body and clamping member and lock the clamping member to the body in clamping position.
Claims14
A drill chuck comprising;
- a chuck body adapted at one end for driving connection to a spindle, a clamping member rotatably supported on said body and having clamping jaws angularly displaceably mounted therein, rotation of said clamping member on said body actuating said jaws in opening and closing direction, a safety device for holding said clamping member in jaw closed position and including an element engageable with said clamping member, and a spring bearing between said element and said body and biasing said element in a direction to urge said clamping member in clamping direction, said spring acting between a first member fixed to said body and a second member rotatable on said body, said element being mounted on said second member, said first and second members being in substantially face to face engagement in a plane perpendicular to the axis of the chuck, said spring comprising a compression spring in said plane and extending part way around the said body, said first and second members being peripherally notched, said spring being mounted in said notches.
A drill chuck comprising;
- a chuck body adapted at one end for driving connection to a spindle, a clamping member rotatably supported on said body and having clamping jaws angularly displaceably mounted therein, rotation of said clamping member on said body actuating said jaws in opening and closing direction, a safety device for holding said clamping member in jaw closed position and including an element engageable with said clamping member, a spring bearing between said element and said body and biasing said element in a direction to urge said clamping member in clamping direction, said element being a two armed lever having a pawl nose on the end of one arm, said clamping member having a toothed region engaged by said pawl nose, a disc pivotally supporting said lever and spring biased in a direction to cause said pawl nose to urge said clamping member in clamping direction, a cup rotatable on said body and having a rim part dependent about said disc and element, and a cam nose inside said rim part, and the other arm of said lever being engageable by said cam nose to move said lever in the direction to disengage said pawl nose from said clamping member.
A drill chuck comprising;
- a chuck body adapted at one end for driving connection to a spindle, a clamping member rotatably supported on said body and having clamping jaws angularly displaceably mounted therein, rotation of said clamping member on said body actuating said jaws in opening and closing direction, a safety device for holding said clamping member in jaw closed position and including an element engageable with said clamping member, a spring bearing between said element and said body and biasing said element in a direction to urge said clamping member in clamping direction, and a cup-shaped housing rotatable on said body and having a dependent rim surrounding said safety device, said rim at the lower end being closed by a disc to which said element is pivoted.
Dependencies are inferred from the claim text.