Multiple-purpose saw blade suspension arrangement for reciprocating saws

Abstract

To floatingly support a saw blade in a frame, the frame is formed, at its free ends, with forked elements; clamping elements are clamped to the saw. The engagement between the forked element (the blade fitting between the gap in the fork) and the clamping element is by means of a depression-projection fulcrum engagement, so that the clamping element, to which the saw blade is attached, can rock or tilt with respect to the forked element, attached to the frame, thus avoiding holding stresses on the saw blade which lead to breakage of the blade at the attachment or clamping points.

What is claimed is: 
     
       1. In a saw frame, a saw blade suspension arrangement for a saw blade (9) which is fixed at or adjacent its opposite ends to the saw frame (10), comprising a clamping element (3, 5, 6, 7) located adjacent at least one end of the blade for attachment to the saw blade (9);   a fork-shaped element (2, 11, 14, 14') disposed at one end of said frame and rockably mounting said clamping element on the outside of the saw frame, to permit the saw blade (9) to extend through the fork gap to its opposite end attachment to maintain the clamping element in engagement, said rockable fork-shaped element and the clamping element being shaped to form a projecting fulcrum on one of said elements and a V-shaped or similarly shaped hollow seat in the other one of said elements .Iadd., the projecting fulcrum comprising a contact edge providing essentially a line contact with said V-shaped or similarly shaped hollow seat. .Iaddend.   
     
     
       2. Arrangement as claimed in claim 1, wherein the fork-shaped element of the saw has a V-shaped hollow seat provided with lateral stopping faces, and the clamping element has a fulcrum edge in the form of a prismatic or wedge shaped end. 
     
     
       3. Arrangement as claimed in claim 1, wherein the fork-shaped element is provided with prismatic or wedge-shaped projections serving as a fulcrum and formed with lateral stopping faces, and the clamping element has an essentially V-shaped hollow seat to receive the fulcrum projection. .[.4. Arrangement as claimed in claim 1, wherein (FIG. 6) the fork-shaped element (14) has at least two conically-shaped hollow seats (14a) and the clamping element (13) is formed with generally conically shaped, or similarly tapered projections (13a) to be located in the conically-shaped hollow seats and serve as fulcrums..]. .[.5. Arrangement as claimed in claim 1, wherein (FIG. 7) the fork-shaped element (14') is provided with two or more conically-shaped, or other similarly tapered projections (14'a), and the clamping element (13') has conically-shaped hollow seats 
     
     
        (13'a)..]. 6. Arrangement as claimed in claim 1, wherein the clamping element has an incision which interrupts the contact edge of the clamp and which traverses the clamp to separate the clamping element into two end portions; and means to clamp the saw blade when introduced into the incision in the clamping element .Iadd.wherein the connection between the clamp and the saw blade is substantially on the level of said line contact between the   
     
     
        clamping element and the seat. .Iaddend. 7. Arrangement according to claim 1, wherein the clamping element has an incision which separates the interior portion of the clamping element into two interior parts; and means to clamp the saw when introduced into the incision in the   
     
     
        clamping element. 8. Arrangement according to claim 1, wherein the clamping element has a U-shaped incision, or groove to permit introduction 
     
     
        of the end of the saw blade therein. 9. Arrangement according to claim 1, wherein the angle of divergence of the V-shaped or similarly shaped hollow seat is greater than the angle of the fulcrum point, or edge, to provide a freely rockable, floating connection permitting self-alignment of the blade. .Iadd.10. Arrangement according to claim 1, wherein the clamping element has an incision which interrupts the contact edge of the clamp and separates the interior portion of the clamping element into two interior parts, and means to clamp the saw blade when introduced into the incision in the clamping element, thereby firmly holding the blade within the 
     
     
        incision. .Iaddend. .Iadd.11.  In a saw frame, a saw blade suspension arrangement for a saw blade (9) which is fixed at or adjacent its opposite ends to the saw frame (10), comprising a clamping element (3, 5, 6, 7) located adjacent at least one end of the blade for attachment to the saw blade (9); a fork-shaped element (2, 11, 14, 14') disposed at one-end of said frame and rockably mounting said claming element on the outside of the saw frame to permit the saw blade (9)to extend through the fork gap to its opposite end attachment to maintain the clamping element in engagement, said rockable fork-shaped element and the clamping element being shaped to form a projecting fulcrum on one of said elements and a V-shaped or similarly shaped hollow seat in the other one of said element, the fork shaped element (14) has at least two conically-shaped hollow seats (14a) and the clamping element (13) is formed with generally conically shaped, or similarly tapered projections (13a) to be located in the conically-shaped hollow seats and serve as fulcrums. .Iaddend. .Iadd.12. In a saw frame, a saw blade suspension arrangement for a saw blade (9) which is fixed at or adjacent its opposite ends to the saw frame (10), comprising a clamping element (3, 5, 6, 7) located adjacent at least one end of the blade for attachment to the saw blade (9); a fork-shaped element (2, 11, 14, 14') disposed at one-end of said frame and rockably mounting said clamping element on the outside of the saw frame to permit the saw blade (9) to extend through the fork gap to its opposite end attachment to maintain the clamping element in engagement said rockable fork-shaped element and the clamping element being shaped to form a projecting fulcrum on one of said elements and a V-shaped or similarly shaped hollow seat in the other one of said elements, the fork-shaped element (14') is provided with two or more conically-shaped, or other similarly tapered projections (14'a), and the clamping element (13') has conically-shaped hollow seats (13'a). .Iaddend.