US 6,234,056 B1Granted

Reciprocating resaw

OwnerHarvey Raymond Oslickinventor

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Abstract

A saw having a fence assembly (FIG. 4) which is adjustable in position to set cutting thickness with a means of securing said fence assembly to a base (10). The fence assembly consists of a lower fence (20), an upper fence (30), an upper outer fence (38), and a lower outer fence (44) that, together with the base, brackets, and fasteners, restrains a work piece except for motion in-line with the cutting direction. A reciprocating blade (60) that passes through a hole in base (10) is held in a blade support assembly (FIG. 5) that provides a means to tension the blade and holding the blade at proper alignment. Bearings and supports hold the blade assembly in-place relative to the base except for reciprocating motion. A source of reciprocating motion is connected to the blade support assembly. An adjustable brace (84) is set a height just above the work piece, thereby restraining the cut pieces from upward motion.

Claims19

Dependent claims

A resaw comprising:

(a) a fence assembly having a set of guide elements that are adjustable so that faces of said guide elements are held by said fence assembly onto both sides and one edge of the work piece being cut;
(b) a base having a means for securing said fence assembly such that said fence assembly and said base restrain the work piece from motion except in the direction parallel to a face or faces of said guide elements and the face of said base in contact with the work piece;
(c) a guide system integral to said base which provides a means to maintain alignment of said fence assembly such that said fence assembly is capable of being positioned within a range of locations relative to said base as said fence assembly is adjusted for various work piece sizes and resulting cut thickness while maintaining a unique direction relative to said base and a face or faces of said guide elements attached or integral to said fence assembly when secured to said base;
(d) a blade support assembly held by bearings attached to said base for restricting said blade assembly to reciprocating motion;
(e) a controllable source of reciprocating motion connected to said blade assembly;
and
(f) a blade held by said blade assembly such that the sides of said blade are parallel to a face or faces of said guide elements attached or integral to said fence assembly secured to said base;
whereby said fence assembly keeps the work piece aligned with said blade while the work piece is being moved toward the reciprocating blade, thereby cutting the work piece into two uniformly thick pieces of the same length and width as the original work piece.

5 more elements

A resaw comprising:

(a) a base having a top, an in-feed end, and an out-feed end whereby the work piece being cut is supported on said base while an operator moves the work piece from said in-feed end to said out-feed end;
(b) one or more slides restrained by the shape of said base to allow motion of slides only perpendicular to the cutting direction where the cutting direction is the direction the work piece is moved from said in-feed end to said out-feed end;
(c) a means to secure each said slide to said base anywhere within a range of positions;
(d) a fence assembly on said in-feed end of said base comprising:
(i) a lower fence rigidly attached to each said slide such that a face of said lower fence remains parallel to the cutting direction while the position of each said slide is adjusted;
(ii) an upper fence support and an upper fence support bracket rigidly attached to each said slide whereby said upper fence support is perpendicular to said base when each said slide is secure to said base;
(iii) an upper fence adjustable in position such that a face of said upper fence when secured to said upper fence support is in the same plane as said face of said lower fence parallel to the cutting direction;
and
(iv) a means of restraining the work piece of any thickness within a range such that one face of the work piece is held against said lower fence and said upper fence with one edge on said base and the other edge being restrained from motion away from said base, thereby allowing motion of the work piece only in line with the cutting direction;
and
(e) a blade assembly consisting:
(i) a blade fixed at two ends that passes through an opening in said base between said in-feed end and said out-feed end;
(ii) a means of tensioning said blade;
(iii) a means of restraining the ends of said blade from twisting;
and
(iv) a support and bearing configuration restraining said blade to reciprocating motion perpendicular to said base while maintaining said blade inline with the cutting direction when pressure on said blade is transferred to said base;
and
(f) a controllable source of reciprocating motion connected to said blade assembly.

15 more elements

Dependencies are inferred from the claim text.

Facts

Application: 09/447,702Filed 23 Nov 1999 · us provisional application
Priority: 25 Jun 1999
Granted: 22 May 2001
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

B23D 51/02
Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts ; Carrying or…:…
B23D 49/06
Machines or devices for sawing with straight reciprocating saw blades, e.g. hacksaws: hacksaw machines with straight saw blades for special use
B27B 19/06
Saws with a power- driven blade chucked at both ends or at one end only, e.g. jig saws, scroll saws: stationary machines
Y10T 83/705
By tool reciprocable along elongated edge: with means to support tool at opposite ends