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 motor vehicle bumpers.
| Identifier | ExFiles\Box 118\3\ scan0117 | |
| Date | 16th August 1935 | |
| PATENT SPECIFICATION Application Date : Aug. 16, 1935. No. 23024/35. 461,283 Complete Specification Left : Aug. 14, 1936. Complete Specification Accepted : Feb. 15, 1937. PROVISIONAL SPECIFICATION Improvements relating to Bumpers for Motor Vehicles We, CORNERCROFT LIMITED, a Company duly organised under the laws of Great Britain, of Ace Works, Queen Victoria Road, Coventry, in the County of 5 Warwick, and NORMAN RYCROFT, British Subject, of 6, St.{Capt. P. R. Strong} Patricks Road, Coventry, aforesaid, do hereby declare the nature of this invention to be as follows:— 10 This invention relates to motor vehicle bumpers of the kind comprising a plurality of resilient transverse bars one of which is fixed to the vehicle frame, whilst the other or front bar is pivotally 15 connected with the fixed or rear bar about vertical axes at two points. The object of the invention is to improve the shock absorbing properties of bumpers of the kind referred to. 20 A motor vehicle bumper of the kind herein referred to embodying the present invention is characterized in that the pivotal connections between the front and rear bars are made resilient so that in 25 addition to the inherent resilience of the bars themselves a cushioning effect is also obtained at those points where the bars are connected together. The bars are arranged in vertical 30 planes. In order to impart resilience to the pivotal connections of the bars each joint may include a soft india rubber bush which is enclosed in an eye formed on one bar and between end plates carried by 35 the other bar, the joint being held together by means of a pin passing through central holes in the bush and plates and provided with end caps and a nut and washer. 40 The rear bar which is attached directly to the vehicle may be divided transversely into two parts and the adjacent ends pivotally and resiliently connected 45 together and to the other or front bar about a vertical axis by means of a joint of the kind above described. In this case the rubber bush may be carried in a cylindrical housing secured to and project- 50 ing rearwardly from the front bar the adjacent ends of the two parts of the rear bar being formed with end plates and pivotally secured together and to the housing by means of a bolt passing centrally 55 through the joint. The india rubber bushes are of substantial diameter and in addition to providing resilience at the joints in all horizontal directions also reduce wear between 60 the relatively movable parts of each joint and at the same time by reason of their large diameter give a better finish to the ends of the bumper. Dated this 15th day of August, 1935. T. FLETCHER WILSON, LL.B. COMPLETE SPECIFICATION Improvements relating to Bumpers for Motor Vehicles We, CORNERCROFT LIMITED, [In 65 voluntary liquidation] a Company duly organised under the laws of Great Britain, of Ace Works, Queen Victoria Road, Coventry, in the County of 70 Warwick, and NORMAN RYCROFT, British Subject, of 6, St.{Capt. P. R. Strong} Patricks Road, Coventry, aforesaid, do hereby declare the nature of this invention and in what manner the same is to be performed, to 75 be particularly described and ascertained in and by the following statement:— This invention relates to motor vehicle bumpers of the kind comprising a plurality of resilient transverse bars one of which is fixed to the vehicle frame, [Price 1/-] whilst the ends of the other or front bar 80 have pivotal connections about vertical axes with the adjacent ends of the fixed or rear bar. The object of the invention is to 85 improve the shock absorbing properties of bumpers of the kind referred to. A motor vehicle bumper of the kind herein referred to embodying the present invention is characterized in that the 90 front and rear bars are also pivotally connected together at the centre about a vertical axis by a joint of a resilient nature. In order that the invention may be 95 clearly understood and readily carried into | ||