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 detachably mounting a vehicle wheel on an axle or shaft.
| Identifier | ExFiles\Box 137\5\ scan0223 | |
| Date | 24th June 1937 | |
| 2 487,179 forms a cushion drive. The sleeve 5 insulates the wheel from the axle so that there is no metal to metal contact. When the drive through the axle 1 is 5 reversed, means are provided to prevent release of the driving grip, and for this purpose the member 10 is prevented from unscrewing by means of a ratchet device incorporated with the member 10. The 10 plate 12 is pressed inwardly by means of the spring 13, and such plate 12 is non-rotatably mounted in the member 10 and has ratchet teeth 14 pressed therefrom which engage teeth on the edge of the 15 member 2. The screwed member 10 therefore is free to be tightened up but is prevented from unscrewing by the ratchet device. In order to remove the wheel the ratchet plate 12 is moved out of 20 engagement with the end of the hub 2 by the screw 12a. Alternatively in lieu of the ratchet device the internal bore at the outer end of the member 2 is screw threaded in the 25 opposite direction to that of the screw thread on the external surface and a lock nut 14a is screw threaded thereon. The screwed member 10a is substituted for the member 10 of Figure 1 and consequently 30 transmits the endwise pressure. The locking member 14a is fixed against relative rotation to the member 10a by means of the screw 15 which permits of relative longitudinal movement, due to 35 the fact that such parts move longitudinally in reverse directions when rotated on the member 2 in the same direction. This lock nut, when the axle 1 is driving in reverse, will be automatically tight-40 ened and will prevent the unscrewing of the member 10a. According to a modified form of the invention, as shown by Figure 3, the wheel 16 is non-rotatably mounted but 45 axially slidable on a multi-sided member 17 having screwed engagement with the hub member 18 carried by the axle shaft, a rubber or other sleeve 17a insulating the wheel from the screwed member 17. 50 A rubber disc 19 is located between the brake drum 20 and the member 17 and when the axle shaft is driving the vehicle forward the screwed sleeve compresses the rubber disc 19. A rubber disc 20a is 55 located against the outer face of the wheel 16 and a member 21 having screwed engagement with the hub member 18 compresses such rubber disc against the wheel. The member 21, after 60 being fixed in position, is connected to the wheel 16 to prevent relative rotation by means of a pin 22, conveniently having a rubber or other resilient sleeve thereon, which engages a groove in the 65 periphery of the member 21 and screws into the wheel. The member 21 has a number of grooves therearound to give adjustment. The member 21 will thus move axially in unison with the screwed 70 member 17, and bind the rubber discs in driving connection with the wheel and hub member 18. The screwed member 21 is locked against unscrewing by a lock nut or ratchet device as described 75 in the previous embodiments. Again in lieu of the wheel being mounted on a multi-sided screwed sleeve, such screwed sleeve may be circular and have a pin which engages in a hole in the wheel. 80 In lieu of a rubber body any other similar resilient body can be used. The invention is applicable to either the driven wheels of a vehicle or wheels freely revolving on stub axles. 85 In the modifications above described the road wheel is detachable, and a portion of the detachable wheel is gripped by the rubber disc or discs, or members, but if desired the wheel mounted on the 90 hub 2, may be formed in two parts, comprising an inner part mounted on the hub 2 and held in driving connection therewith by the rubber disc or discs and an outer portion detachably fixed to the 95 inner portion. The driving connection of the hub mounting is not disturbed when the detachable portion of the wheel is removed. Having now particularly described and 100 ascertained the nature of our said invention and in what manner the same is to be performed, we declare that what we claim is :— 1. Means for detachably mounting a 105 vehicle wheel on an axle or shaft or thereon of the type set forth, in which the resilient member or members is or are compressed by a detachable screwed member engaging the end of the axle or 110 hub thereon, characterised in that means are provided to prevent the screwed member unscrewing when the vehicle is driven in reverse, so that the resilient member or members will be retained in 115 compressed condition during such reverse drive. 2. Means for detachably mounting a vehicle wheel on an axle or shaft as set forth in claim 1, characterised in that the 120 screwed member is prevented from unscrewing by means of a ratchet device which is adapted to be moved out of engagement with the hub, for the purpose of detaching the screwed member. 125 3. Means for detachably mounting a vehicle wheel on an axle or shaft as set forth in claim 1, in which a locking member is non-rotatably fixed to the screw pressure member, by means which 130 permit of relative axial movement, the 487,179 3 locking member being reversely screw threaded and screwed into the bore of the hub whilst the screwed pressure member externally engages the end of the hub on 5 which the wheel is detachably mounted. 4. Means for detachably mounting a vehicle wheel on an axle or shaft as set forth in claim 1, in which the resilient members comprise rings or washers, 10 characterised in that such rings or washers increase in thickness towards the periphery. 5. Means for detachably mounting a vehicle wheel on an axle or shaft substantially as herein set forth and shown. 15 Dated this 24th day of June, 1937. J.{Mr Johnson W.M.} E.{Mr Elliott - Chief Engineer} S. LOCKWOOD, Agent for the Applicants, 3, New Street, Birmingham, 2, and 31, Queen Street, Wolverhampton. Leamington Spa: Printed for His Majesty's Stationery Office, by the Courier Press.—1938. | ||