Patents Completed.
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Complete specifications of the following patents will be sent to any address in the United Kingdom upon receipt of eightpence per copy at the Sale Branch, Patent Office, Holborn, W.C.
DIFFERENTIAL GEARING. — Lamplough.—No. 17,424, dated 22nd July, 1910.—This specification describes a worm-gear apparatus, of the kind in which a pair of right-handed and left handed worms on the main or driving spindle is arranged to gear with worms on cross-shafts on opposite sides of the main or driving spindle. It will be seen that the main spindle which receives motion from the prime mover is formed with a cross piece which carries at its end a pair of bevel wheels which mesh with other bevel wheels on either side of the cross piece and are fixed to righthanded and left-handed worms mounted on the main spindle. The worms are retained in position by thrust bearings and adjusting nuts, and they engage with secondary worms mounted on cross spindles on either side of the main spindle. Upon each of these cross spindles is mounted a toothed pinion gearing with toothed wheels which form part of or are mounted on shafts which continue to the road wheels on opposite sides of the vehicle. The object of this arrangement is to obtain a differential action and at the same time a balanced drive.
TAXIMETERS. — Rogers. — No. 24,990, dated 27 October, 1910.—This specification describes a device applicable to the hire-indicator lever spindle of the taximeter, for the purpose of introducing at any pre-arranged point in its path of revolution, an arrestmcnt which is positive, and which requires a slight reversal of the spindle to enable a further revolution of the spindle to be made. Experience has shown that such a device is necessary to introduce a time lag in the movement of the zeroising devices, so that the dials and cther parts of the taximeter that require zeroising may come to rest prior to their being arrested by further movement of the devices Controlling them. As will be seen from the
illustration, there is arranged on the spindle of the hire-indicator lever a flanged collar which is peripherally grooved for a small distance. A pin enters the spindle within the slot and thereby limits the movement of the collar through an arc dependent on the slot.
On the flange forming part of the collar an indentation is made adapted to receive a flat spring, and, preferably on the opposed edge of the disc, is cut a ratchet tooth with which a pawl engages. Adjacent to the collar is a cam adapted to engage with a pin on this pawl. In operation, as the hire-indicator lever spindle is turned in the direction of the arrow, the collar and flange move with the spindle by reason of the pin and slot, and the cans passes the pin on the ratchet pawl. A slight further revolution brings the pawl into engagement with the tooth in the flange and thus wrests the motion of the spindle, until the direction of rotation has been reversed, when the earn re-engages the pin on the pa w/ to reloase it from engagement with the tooth in the flange. Immediately it is released, the spring rotates the flange through the distance allowed by the slot. in the collar, so that the further rotation of the spindle may be resumed. If more than one arrestment be desired, a corresponding number of indentations for the spring, more ratchet teeth for the pawl and more points on the cam, are provided.
HYDRAULIC FRICTION CLUTCH. —Lamplough.—No. 16,905, dated 15th July, 1910.—The invention described in this specification relates to that kind of friction clutch in which a pump, operated by the relative movement of the clutch members by an eccentric sleeve, pumps liquid into a flexible chamber which causes the clutching, surfaces to engage; when that happens the pump ceases to operate, and the whole arrangement rotates as at single piece. As shown in the illustration, a casing encloses towards one of its ends two oppositely-arranged cone friction members that are connected together by bolts and springs. Between these cones is placed a hollow flexible diaphragm, and the base of one of the cones is connected to a block carried by the clutch spindle. The other end of the casing encloses a sleeve, a part of which is bored eccentrically and a part concentrically ; in the eccentric portion a ring is located. This ring carries a pin which engages a pump plunger working in the body of the above-mentioned block which fits the concentric part of the sleeve. Then, if relative movement takes place between the block and the casing, the pump plunger is reciprocated, and oil is pumped into the diaphragm thereby forcing the cones apart and causing them to engage the casing, whereby the clutch spindle is caused to rotate.
AGRICULTURAL MOTOR FOR UNIVERSAL SERVICE.—Von Meyenburg.—No. 3,015, dated 9th February, 19111—This specification describes a motor vehicle that is intended for agricultural work; various tools and implements can be secured to it and thereby
driven. The machine is intended to fulfil many varying requirements, for example, in ploughing no considerable changes in speed or in reversing are required, but there must be high power together with comparatively high speed of the tool. On the other hand in transport, considerable and quick change of speed is required, but only a comparatively-small power with a relatively-low speed of the driving wheels is necessary. Care must also be taken in loading the machine not to affect adversely the centre of gravity; provision is made for this in the design. The axle of the driving -wheels is cranked forward, and the motor and driving gear are mounted on the cranked portion of the axle. To the engine are connected a driving gear with a constant-ratio transmission and a driving gear with a varying transmission ; both these gears extend substantially along the driving-wheel axle. The space between the two driving wheels is left free and available for passengers, for loads or for the attachment of portable or stationary machines without any adverse effect upon the centre of gravity. The illustration shows an earth-cutting machine suspended or attached to the motor, the frame of which carries the drum with the cutting tools. The specification also describes the following arrangements :—(1) A mill with a sackfilling device is mounted in the free space between the driving wheels ; (2) A chaffcutting machine with a feed and discharge device is mounted similarly to the mill; (3) A vessel is arranged between the driving wheels, with a spraying device for chemicals contained therein; (4) A dynamo for generating electric light is carried; (5) A centrifugal pump for spraying purposes is carried; (6) A
manure-spreading device may be arranged between the driving wheels ; and (7) Weeding and digging tools may be suspended between the driving wheels. For driving machine tools or other devices situated outside the motor vehicle, the latter is fixed by means of legs at the point of working.