# US 4,393,969 A · Roller table for use with a power saw

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- Number: US 4,393,969 A
- Document ID: US4393969A
- Status: Granted
- Kind: A
- Application number: 06/200,777
- Filed: 1980-10-27
- Granted: 1983-07-19
- Earliest claimed: 1980-10-27
- Inventors: William J. Woell
- Web page: https://patentgrep.com/patent/US4393969A

## CPC

- B65G 13/11: Roller frames
- B23D 47/025: {of tables}
- B23Q 3/105: {Auxiliary supporting devices independent of the machine tool}
- B27B 25/02: with feed and pressure rollers
- Y10T 83/6635: By feed roller
- Y10T 83/95: Machine frame
- Y10T 83/97: Miscellaneous
- B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D)
- B23D: PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR (making toothed gears or the like B23F; cutting metal by applying heat locally B23K; arrangements for copying or controlling B23Q)
- B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B27B: SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR (saws specially adapted for pruning or debranching A01G3/08; sawing apparatus specially adapted for felling trees A01G23/091; features not restricted to a particular type of wood saw B23D, e.g. attaching saw blades B23D51/00; machine tool frames, beds, pillars or like members, in general B23Q1/01)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## Abstract

A self supporting roller table in combination with a power saw includes a frame with polygonal sides and a plurality of support legs supporting the frame independently of the power saw at a height compatible for cooperation with the power saw. A plurality of parallel rollers are each rotatably attached within and to the frame. Each roller is made from a conventional plastic pipe section with a pair of plastic end plugs having integrally molded stub shafts for rotatably mounting the rollers.

## Claims

### Claim 1

For use in combination with a power tool with which large workpieces are used, a self-supporting roller table comprising:
a frame comprising a pair of spaced, parallel, side members and end members joining the side members;
a plurality of support legs at each end of the frame for supporting said frame independently of the power tool at a height compatible for cooperation with said power tool, said legs comprising a pair of leg assemblies at each end of the frame, each leg assembly comprising a pair of legs, each leg comprising a tube section joined to another tube to move as an assembly and having upper and lower ends, said legs each including an adjustable leg portion adjustably telescopically fitted in each tube section;
a plurality of rollers, each roller comprising a plastic pipe section having two open ends and a pair of plastic end plugs having surfaces for respectively concentrically engaging an inside surface of the plastic pipe at both open ends and an integrally molded plastic stub shaft, each side member of the frame having a plurality of apertures formed therein and having annular surfaces for directly receiving the stub shafts of the end plugs to rotatably mount the stub shafts and said rollers in generally parallel spaced apart relationship and directly supported on the annular surfaces; and
hinge means for pivotally mounting the leg assemblies to the frame side members to position the tubes of each assembly below the lower edge of a respective side member and in alignment therewith, the hinge axis of the hinge means being offset from the longitudinal axis of the legs and above the upper ends of the legs so that when the legs are pivoted upright the upper ends of the tube sections of the legs abut against the lower edge of the respective side frame member to directly support the frame and rollers.

### Claim 2 (depends on 1)

The table of claim 1 and brace means from each pair of legs extending to the frame side member, said brace means comprising rods having end portions at right angles to the main portions of the brace means, and a separate aperture on the interior surface of each frame side member of size to removably retain the end portion of each rod when the legs are in upright position.

### Claim 3 (depends on 1)

The table of claim 1 wherein the offset of the hinge axis of the hinge means permits the legs to fold substantially against the lower surface of the respective frame side member.

### Claim 4 (depends on 1)

The table of claim 1 wherein the frame is rectangular with at least 10 rollers in parallel relationship attached thereto, said rollers having a gap of in the range of four inches between adjacent rollers.

### Claim 5 (depends on 1)

The table of claim 1 wherein the plastic pipe section is a section of plastic drain pipe.

### Claim 6

For use in combination with a power tool with which large workpieces are used, a self-supporting roller table comprising:
a frame including a pair of elongated side members and a pair of end members secured to the side members to hold the side members in assembly said side members having substantially straight lower edges;
a plurality of support legs comprising a leg adjacent each junction of the side and end members for supporting said frame independently of the power tool at a height compatible for cooperation with a power tool;
hinge means for pivotally mounting each leg to a frame side member adjacent the lower edge of the respective side member and in vertical alignment with the side member, the hinge means comprise a pair of ears extending laterally of the legs and spaced apart to receive the respective side frame member and pivotally mounted with a pin passing through the ears and the respective side frame member to form the pivot axis of the respective hinge means, said pivot axis being offset from the longitudinal axis of the respective leg and positioned above the upper end of the respective leg so that when the legs are pivoted upright the upper ends of the legs abut against the lower edge of the respective side frame member to directly support the frame and so the legs may be folded to be parallel to the lower edge and in a position to rest substantially against the lower edge of the respective side member;
means to connect the two legs at each end of the frame together to form a leg unit, brace means for each leg unit in its upright position extending from the leg unit to the frame side members, said brace means comprising a pair of rods at each leg unit, each rod having a main portion and an end ear portion bent at right angles to the main portion, and a pair of separate apertures on the interior surface of each frame side member of size to removably retain the end portions of the rods of the respective leg units at the opposite ends of the frame when the legs are in upright position;
a plurality of rollers, each roller comprising a conventional plastic pipe section having two open ends and a pair of plastic end plugs having surfaces for concentrically engaging an inside surface of the plastic pipe at both open ends; and
means for rotatably mounting the rollers between the side frame members in substantially parallel relationship to each other comprising stub shafts integrally molded to the respective end caps and rotatably mounted directly in an aperture found in the adjacent frame side member.