From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Patent specification for improvements to the mounting of engines in motor vehicles to reduce vibration.
| Identifier | ExFiles\Box 147\1\ scan0048 | |
| Date | 23th November 1933 | |
| PATENT SPECIFICATION 401,809 Convention Date (Italy): July 13, 1931. Application Date (in United Kingdom): July 12, 1932. No. 19,705 / 32. Complete Accepted: Nov. 23, 1933. COMPLETE SPECIFICATION. Improvements in or relating to the Mounting of Engines in Motor Vehicles. We, LANCIA & C. FABBRICA AUTOMOBILI-TORINO-S.A., an Italian Company, of 99, via Monginevro, Turin, Italy, do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:— The invention relates to the mounting of the engine on the chassis of motor vehicles and has for its object to provide a device which prevents the vibrations of the engine from being transmitted to the vehicle chassis under all running conditions of the engine. According to the invention, the engine is connected to the chassis by resilient and braked supports, each forming a unitary resilient self-braking member consisting of a set of resilient laminæ with interleaved friction braking linings, said laminæ being responsive to bending stresses and being forced together with said interleaved friction braking linings where a respective displacement of adjacent laminæ occurs. Several constructional forms of the invention are represented diagrammatically by way of example in the accompanying drawings, wherein; Figure 1 is a side elevation of the portion of a vehicle chassis on which is mounted the engine, Figure 2 is the corresponding plan view, Figure 3 shows on a larger scale in longitudinal section the connection of the end of an engine resilient support member according to the invention with the engine, Figure 4 is a similar cross-section of the connection of an engine resilient support member to the chassis, and Figures 5 and 6 are views similar to Figure 2 of two modifications. In the Figures, 1 denotes the longitudinal members of the vehicle chassis and 2 is the engine which, for mounting purposes, is provided with two cross-members 3 and 4. In the example shown in Figures 1 and 2, each of the chassis longitudinal members 1 has fixed to it by any suitable means, for example by means of bolts 5 and clips 17, the middle portion of a set of laminæ 6, said set having its ends respectively attached each to one end of cross-members 3 and 4, for example by means of bolts 8 and clips 18. As will be seen more particularly in Figures 3 and 4, the laminæ 6 of each set are spaced apart, and linings 13 and 14 are interleaved with said laminæ, as hereinafter described. At each point of attachment of each resilient engine support member with the engine (Figure 3), said interleaved linings 13 are made of a material having a high coefficient of friction, such as leather, compressed cardboard, impregnated asbestos or the like, and the laminæ 6, which in these portions of the same move with respect to each other during the flexure or bending of the whole of the resilient support member, are forced together with said interleaved linings 13 by means of their attaching bolts 8, thus creating a frictional resistance against respective displacement of laminæ 6 to damp or brake the bending of said resilient support member. At the place of attachment of each resilient support member to the chassis longitudinal member 1 (Figure 4), said laminæ 6 are fastened with each other by means of fastening bolts 5 and clips 17, and the interleaved linings 14 are made of a soft and resilient material such as rubber, rubbered fabric, cork or the like. By such resilient and braked action of the support members, due to the interengaging laminæ 6 and linings 13, the vibrations of the engine are absorbed and damped, while yielding linings 14 prevent the residual vibrations from being transmitted to the chassis. The portions of the laminæ 6 where a respective displacement of the same occurs during bending of the resilient braked support and having friction braking linings 13 interleaved therewith, are forced together preferably by the aid of resilient members. For this purpose in the illustrated example, each cross-member 3, 4 of the engine has at its points of interconnection [Price 1/-] [This Drawing is a reproduction of the Original on a reduced scale.] 401,809 COMPLETE SPECIFICATION SHEET 1 2 SHEETS. SHEET 2 Fig. 1 Fig. 2 Fig. 3 Fig. 4 Fig. 5 Fig. 6 Malby & Sons, Photo-Litho. | ||