Saw Blade

Apparatus for clamping the end of a saw blade

Saw Blade Abstract

An apparatus includes a clamping body which includes a lever which bears against a saw blade inserted into the clamping body. A tension spring is connected to the lever and to the clamping body and the tension spring bears against a pin which is slideably mounted in the clamping body. The pin bears against the saw blade and moves the saw blade out of engagement with form-lock projections in the clamping body when the lever is moved to an unlocked position.

Saw Blade Claims

We claim:

1. An apparatus for clamping an end of a reciprocating saw blade having a longitudinal direction and a transverse direction, the apparatus comprising:

a clamping body;

a resting surface formed on said clamping body;

a plurality of securing projection means formed on said resting surface for the purpose of engaging said reciprocating saw blade;

clamping member means mounted on said clamping body, with said clamping member means capable of a position in which said clamping member means are clamped against said resting surface and capable of a position lifted off from said resting surface;

lift-off means, mounted on said clamping body, capable of imparting transverse motion to said saw blade for the purpose of lifting said saw blade away from said plurality of securing projection means;

a spring-loaded pin, with said spring-loaded pin slideably mounted in said clamping body;

said clamping means comprising a lever member mounted on said clamping body having a shorter arm, with said shorter arm bearing on an eccentric cam, and a longer arm, an eccentric cam formed on said shorter arm and disposed adjacent to said saw blade;

a tension spring having a first end and a second end and an intermediate portion with said first end connected to said clamping body, with said second end connected to said longer arm of said lever body, with said intermediate portion of said tension spring bearing on said pin, with said tension spring extending in circumferential direction around said clamping body, and with said tension spring urging said lever member to bear against said saw blade, causing said saw blade to bear against said resting surface.

2. The apparatus according to claim 1, in which said reciprocating saw blade comprises at least one projecting form-lock portion and in which said spring loaded pin is disposed in general alignment with said projecting form-lock portion.

3. The apparatus according to claim 1, in which said pin comprises a rounded end formed thereon.

4. The apparatus according to claim 1, further comprising:

a ram member mounted in said clamping body; and

a sleeve member mounted in said clamping body and connecting said clamping body and said ram member, with said pin slideably mounted in said ram member.

Saw Blade Description

We claim:

1. An apparatus for clamping an end of a reciprocating saw blade having a longitudinal direction and a transverse direction, the apparatus comprising:

a clamping body;

a resting surface formed on said clamping body;

a plurality of securing projection means formed on said resting surface for the purpose of engaging said reciprocating saw blade;

clamping member means mounted on said clamping body, with said clamping member means capable of a position in which said clamping member means are clamped against said resting surface and capable of a position lifted off from said resting surface;

lift-off means, mounted on said clamping body, capable of imparting transverse motion to said saw blade for the purpose of lifting said saw blade away from said plurality of securing projection means;

a spring-loaded pin, with said spring-loaded pin slideably mounted in said clamping body;

said clamping means comprising a lever member mounted on said clamping body having a shorter arm, with said shorter arm bearing on an eccentric cam, and a longer arm, an eccentric cam formed on said shorter arm and disposed adjacent to said saw blade;

a tension spring having a first end and a second end and an intermediate portion with said first end connected to said clamping body, with said second end connected to said longer arm of said lever body, with said intermediate portion of said tension spring bearing on said pin, with said tension spring extending in circumferential direction around said clamping body, and with said tension spring urging said lever member to bear against said saw blade, causing said saw blade to bear against said resting surface.

2. The apparatus according to claim 1, in which said reciprocating saw blade comprises at least one projecting form-lock portion and in which said spring loaded pin is disposed in general alignment with said projecting form-lock portion.

3. The apparatus according to claim 1, in which said pin comprises a rounded end formed thereon.

4. The apparatus according to claim 1, further comprising:

a ram member mounted in said clamping body; and

a sleeve member mounted in said clamping body and connecting said clamping body and said ram member, with said pin slideably mounted in said ram member.