Metal working – Plural diverse manufacturing apparatus including means for... – Separate tool stations for selective or successive operation...
Reexamination Certificate
2000-02-01
2001-09-25
Rada, Rinaldi I. (Department: 3724)
Metal working
Plural diverse manufacturing apparatus including means for...
Separate tool stations for selective or successive operation...
C083S810000, C083S813000, C083S439000, C083S443000, C083S445000, C083S468100, C083S943000
Reexamination Certificate
active
06293000
ABSTRACT:
FIELD OF INVENTION
This invention pertains to improvements in a table saw for use in dismantling of wood pallets.
BACKGROUND OF THE INVENTION
Wood pallets comprising face boards secured to the opposite edges of stringers used for the storing, shipping and handling of goods frequently are damaged in part, but contain reusable portions. The face boards are attached usually by nails to the top and bottom edges of the stringers. The stringers in some pallets are replaced at least in part by blocks of wood or similar material, but in either case, the pallet is provided with opposite rows of substantially parallel face boards so that the pallets can be stacked one on the other, or placed on a horizontal surface, with the upper surface of a pallet carrying a load. Table saws have been provided heretofore which incorporate a flat table surface upon which a damaged pallet to be dismantled can be supported, and moved through a band saw to effect cutting of the nails or other fasteners holding the face boards to the stringers. Because pallets are irregular in size and configuration, they are generally moved across the table and past the saw blade manually. Because of the irregularities and distortions, binding of the blade frequently occurs and it is necessary for the saw operator frequently to twist the pallet from one position to another to facilitate its movement through the saw.
It is a principal object of the present invention to provide an improved table saw apparatus to facilitate the cutting of nails that connect the face boards of a pallet to the stringers and expedite and reduce the time and effort required to dismantle a pallet.
More particularly, it is an object to provide improvements to a table saw that facilitate the maneuvering of a pallet as it is moved through a saw so as to increase the rate at which pallets can be dismantled.
It is another object to provide a table saw that can be easily modified for operation by one man or alternatively by two men in processing larger pallets.
Other objects and advantages will become apparent hereinafter.
SUMMARY OF THE INVENTION
In accordance with the invention, a table saw is provided, having a substantially horizontal table upon which pallets to be dismantled may be supported upon the face boards of a pallet. Extending across the top of the table is the upper course of a band saw blade which is positioned above the table at a height substantially equal to the thickness of a face board so that as a pallet on the table is moved through the blade, the blade will sever the fasteners holding the face boards to the stringers of the pallet with minimum removal of material from either the face boards or the stringers. A fence is positioned along one edge of the table surface, the fence comprising a convexly curved surface portion facing towards the direction of movement of saw blade, that is with the saw blade moving towards the fence, the apex of the curved surface being substantially aligned with the cutting edge of the saw blade. The configuration of the fence facilitates the ability of the operator manually pushing or pulling a pallet through the saw to shift the position of the pallet to expedite the cutting action of the saw blade.
In accordance with a modification of the invention, the table is constructed to permit shifting of the position of the table in the direction normal to the movement of the saw blade, to facilitate the handling of pallets by one operator or two operators.
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Advertisement,Pallet Enterprise, p. 17, Nov. 1999—Heartland deluxe Saw.
Advertisement,Pallet Enterprise, p. 29, Nov. 1999—Alpine bandsaw.
Advertisement,Pallet Enterprise, p. 57, Nov. 1999—Upgrade Systems bandsaw.
Advertisement,Pallet Enterprise, p. 72, Nov. 1999—The MSI Cut & Go Bandsaw.
Advertisement,Pallet Enterprise, p. 92, Nov. 1999—Trading Post bandsaw.
Advertisement,Pallet Enterprise, p. 16, Feb. 2000—JB & Co. bandsaw.
Advertisement,Pallet Enterprise, p. 13, May 2000—Valley Saw bandsaw.
Advertisement,Pallet Enterprise, p. 66, May 2000—Smart Products bandsaw.
Advertisement,Pallet Enterprise, p. 77, May 2000—Prosaw bandsaw.
Advertisement,Pallet Enterprise, p. 78, May 2000—PDI bandsaw.
Goodman Charles
Klarquist & Sparkman, LLP
Rada Rinaldi I.
Smetco, Inc.
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