Promotional brochure detailing the Vapart Shredder (patented), winner of the Gold Medal at the 1878 Exhibition. Sub-title: 'crushing, grinding, pulverising'. Lists its applications, advantages, method of employment, practical results, establishments where Vapart shredders operate. Across centre pages is a detailed illustration of the shredder. Patent owned by J. Bichon & Cie, 113, Quai d'Orsay, Paris. This is contained within the Société de la Vieille Montagne bundle as there is a quote from Saint-Paul de Sinçay, dated 9th November 1878: 'I [...] certify that the centrifugal force crusher [...] has been used for more than a year in four of the large factories of my company [...] with great success' (p.6). Contains a drawing and advertisement for 'jaw crushers' on the final page.