US 4,147,518 AGranted

Extrusion apparatus for making fire kindling device

AssigneePine Rest Christian Rehabilitation Services

InventorsKenneth L. De Hart, Raymond C. Wing

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Abstract

A fire kindling device, extrusion method for making such devices, and extrusion apparatus for making same. The device is a composition of wood particles or chips of predetermined size and flammable paraffin wax in a ratio of about two parts wax to one part wood by weight. Application of controlled heat and pressure preferably by extrusion impregnates the wood with wax providing advantageous and efficient burning characteristics. The method includes blending quantities of the wood particles and molten wax, solidifying the mixture, extruding the solidified mixture under controlled heat and inserting a wick through the resultant product. The extrusion apparatus includes a cooling system for cooling the extrusion chamber to maintain the quality and consistency of the extruded product.

Claims13

Dependent claims

Extrusion apparatus for extruding a composite mass such as a composition of flammable wax and wood chips to form fire kindling material comprising a rotatable extrusion member;

means for rotating said extrusion member about a predetermined axis;
an extrusion chamber closely surrounding and coaxial with said extrusion member and extending beyond the end of said extrusion member, and a nozzle extending beyond and coaxial with said extrusion chamber;
means for inserting a mixture of wood particles and wax with said wax in solid form under a predetermined pressure in said extrusion chamber;
and a coolant system for cooling said extrusion chamber to control the quality and consistency of the extruded mass, said system including at least one hollow, liquid-tight jacket surrounding said extrusion chamber and cooling means for circulating a liquid coolant through said jacket at a predetermined temperature.

1 more element

Dependencies are inferred from the claim text.