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 a resilient engine mounting system in motor vehicles.
| Identifier | ExFiles\Box 147\1\ scan0049 | |
| Date | 12th July 1932 | |
| 2 401,809 with the set of laminæ 6 (Figure 3) concentric seats wherein rubber cushions 7 are located, one of said cushions bearing on the laminæ set and the other being 5 engaged by the bolt 8 attaching said set to the co-operating engine cross-bar 3 or 4. In the illustrated embodiment the inter-engagement of the parts is provided by a head 9 of bolt 8 which engages the 10 lower section of the clip 18 embracing the laminæ 6 of the set, and by the nut 12 of bolt 8, which nuts bears on the adjacent cushion 7 through the intermediary of a spring 11 enclosed in a cap 10, said 15 cushions 7 being perforated for the passage of the bolt 8 therethrough. In the case in which the engine is integral with a change speed gear unit, it is preferable that the support of the 20 end of the bear box on a cross-member 15 of the chassis is effected by means of a resilient connection, as indicated in Figures 1 and 2, in which 16 is a resilient blade fixed by one end in a cross-member 25 15 of the chassis and pivoted by its other end to a lug projecting from the opposite wall of the gear box. The resilient mounting of the engine may be carried out in a different manner 30 from that shown in Figures 1 and 2, it being merely essential that the engine is supported by members comprising resilient laminæ having means braking their respective motion where a respective 35 movement of said laminæ occurs. For example, the ends of the cross-members 3 and 4 of the engine may each be connected to an intermediate point of a self-braking resilient member of the 40 described character. In this arrangement a rigid connection between the ends of the cross-members and the self-braking resilient member is effected in a manner similar to that shown in Figure 4, and a 45 resilient connection between the ends of the self-braking resilient member and the chassis is effected in a manner similar to that shown in Figure 3, this arrangement being the reverse of that shown in 50 Figures 1 to 4 as the engine bears on an intermediate portion of the self-braking resilient member and the ends of the latter on the chassis. Figures 5 and 6 represent two further 55 arrangements in which each set of laminæ 6 is connected to the chassis longitudinal member 1 by means of an end clip 17¹ in the conditions shown in Figure 4, and to the cross-member 3 or 4 of the engine by 60 means of another end clip 18¹ in the conditions shown in Figure 3. Having now particularly described and ascertained the nature of our said invention and in what manner the same is to 65 be performed, we declare that what we claim is :— 1. An arrangement for the resilient mounting of the engine in motor vehicles, characterised in that the engine is connected to the chassis by resilient and 70 braked supports each forming a unitary self-braking member comprising a set of resilient laminæ responsive to bending stresses and forced together with interleaved braking linings where a respective 75 displacement of said laminæ occurs. 2. An arrangement as claimed in Claim 1, characterised in that in each set, the laminæ are spaced apart. 80 3. An arrangement as claimed in Claims 1 and 2, characterised in that linings of soft or yielding material are interleaved between said laminæ where said laminæ are fast to one of the parts 85 interconnected by the laminæ set. 4. An arrangement as claimed in Claims 1 to 3, characterised in that where the resilient and braked support is connected to the engine said laminæ 90 thereof are forced together with interleaved linings of a material having a high coefficient of friction, and where said resilient and braked support is connected with the vehicle frame said laminæ are 95 fastened thereon with interleaved linings of soft or yielding material. 5. An arrangement as claimed in Claim 1 or 4, characterised in that said laminæ of each resilient and braked support are 100 forced together with the interposition of elastic means such as rubber cushions, a rod which clamps said cushions with the aid of a spring being passed through the said cushions. 105 6. An arrangement as claimed in Claim 1, characterised in that the engine is supported at the ends of two sets of resilient and self-braking laminæ, each set being connected to the chassis at an 110 intermediate point of the length of the said set. 7. An arrangement as claimed in Claim 1, in which the engine is integral with the change speed gear, characterised in 115 that the latter is coupled to the vehicle chassis by means of a resilient coupling. 8. Arrangements for the resilient mounting of the engine in motor vehicles, substantially as described or substantially 120 as shown in the accompanying drawings. Dated this 12th day of July, 1932. LANCIA & C. FABBRICA AUTOMOBILI-TORINO-S.A., per Boult, Wade & Tennant, 111 & 112, Hatton Garden, London, E.C.1, Chartered Patent Agents. Redhill: Printed for His Majesty's Stationery Office, by Love & Malcomson, Ltd.—1933, | ||