The expression " furniture and effects belonging to a prison " includes all furniture, beds, bedding, clothes, linen, implements, machinery and stores, except goods manufactured for sale and materials in store for the purposes of such manufacture, also all books, papers, registers, and documents whatsoever relating to such prison or to the prisoners therein, also all articles whatsoever, whether or not of the same kind as those previously described, belonging at the commencement of this Act to the prison authority of any prison for the purposes of such prison.