ALL PURPOSE SAW

• US 3,651,844 A
• Filed: 02/24/1970
• Issued: 03/28/1972
• Est. Priority Date: 02/24/1970
• Status: Expired due to Term

• Current Assignee: Terry B.C. Barnes
• Original Assignee: Terry B.C. Barnes
• Inventors: Barnes, Terry B. C.
• Primary Examiner(s): Schran, Donald R.
• Application Number:
  US05/013,334
• Time in Patent Office: 763 Days
• Field of Search: 143/133AD,133,133A 145/31,33,108 306/30 279/99,101 287/125
• US Class Current: 30/502
• CPC Class Codes: B23D 57/0015 hand-held or hand-operated
• CPC Class Codes: B23D 61/185 Saw wires; Saw cables; Twisted saw strips
• CPC Class Codes: Y10T 83/9346 Uniformly varying teeth or tooth spacing

Abstract

An all purpose saw comprising an elongated saw blade having a generally helical cutting tooth, first and second gripping elements, and first and second connector members for attaching the first and second gripping elements, respectively, to the blade. At least one of the connector members at least partially circumscribes the blade and coacts with the helical tooth to attach such connector member to the blade.

Claims

1. A saw comprising:

an elongated saw blade, said blade having a generally helical cutting tooth and opposite end portions;

gripping means adapted to be manually grasped to reciprocate said saw blade;

first means for attaching said gripping means to a first region of said blade closely adjacent one of said end portions of said blade;

second means for attaching said gripping means to a second region of said blade closely adjacent the other of said end portions whereby a user can grasp said gripping means and reciprocate said saw blade to perform a cutting operation;

said helical tooth extending into said first region; and

said first means having a helical groove, said first means at least partially circumscribing said first region with said helical groove receiving said helical tooth and coacting therewith to threadedly attach said gripping means to said blade, said first means and said blade being relatively rotatable to move the first means axially of the blade.

2. A saw as defined in claim 1 wherein said gripping means includes first and second manually grippable elements connectable to said first and second means, respectively.

3. A saw as defined in claim 1 wherein said gripping means includes a resilient frame member for placing the saw blade in tension.

4. A saw as defined in claim 1 wherein said first means includes a loop portion and said gripping means includes a ring-like element received within said loop to thereby attach said ring-like element to said first means.

5. A saw comprising:

an elongated saw blade, said blade having a generally helical cutting tooth thereon, said blade having opposite end portions and said tooth extending into at least one of said end portions whereby said one end portion defines a screw portion;

first and second gripping means for use in reciprocating the blade, each of said gripping means being adapted to be manually grasped;

said first gripping means including a nut having an internal thread, said nut threadedly receiving said screw portion to thereby threadedly attach the first gripping means to said blade, said nut and screw portion being relatively rotatable to move the nut axially of the screw portion;

means for attaching said second gripping means to a second region of said blade closely adjacent the other of said end portions whereby a user can grasp said gripping means and reciprocate said saw blade to perform a cutting operation; and

said saw blade being relatively flexible to thereby permit substantial relative movement between said gripping means when said gripping means are attached to the saw blade.

6. A saw as defined in claim 5 wherein said nut and screw portion are relatively rotatable to permit removal of the first gripping means from said blade.

7. A saw as defined in claim 5 wherein said tooth extends substantially continuously along said blade.

8. A method of attaching a saw blade to members which are useful in reciprocating the saw blade, said method comprising:

providing an elongated saw blade having A generally helical cutting tooth;

providing a first member having an attachment portion of deformable material;

positioning said attachment portion closely adjacent a first region of said blade, said helical cutting tooth defining a screw portion at least at said first region;

forcing said attachment portion into engagement with said screw portion to displace some of the material of said attachment portion to form a groove in said attachment portion and convert the attachment portion into a nut with the nut and the screw portion being threadedly attached and being relatively rotatable to axially advance the nut relative to the screw portion; and

attaching a second member to a second region of said blade, said member being useful in reciprocating the blade.