Patents Completed.
Page 22
If you've noticed an error in this article please click here to report it so we can fix it.
REAR-AXLE.—Straker.—No. 3,967, dated 21st February, 1908.—This invention relates to vehicles designed to carry heavy loads. In order to allow the receptacle (a) to be as near the road as possible the rear axle (b) is bent to form a U extending round, the receptacle (a). An eye-bolt (c), attached by a bolt (d) to a bracket (e) secured to the frame of the vehicle, is fixed at the middle of the axle.
This attachment allows the bracket to turn about the bolt (d) and thus act as a radius rod.
VARIABLE SPEED GEAR.—The Pullcar Motor Co., Ltd.—No. 14,114, dated 19th June, 1907.—A pinion (15), which is mounted on the driving shaft, gears with a train of epicyclic gears contained within a casing (2). Also mounted on the driving shaft (1) is a pinion (27) which gears with a train of epicyclic gears contained within a casing (3). The pinion (15) meshes with the planet gears (16) which are integral with the planet gears (18) meshing with a pinion (19) carried by a sleeve (11) mounted on the shaft (1). The pinion (27) meshes with the planet wheels (25) which are integral with the planets (28) ; the latter mesh with a further pinion (29) carried by the sleeve (11).
A pinion (12), which constitutes the driven member, is mounted on the sleeve (11). Integral with the planet wheel (16) are planet wheels (20) which gear with a pinion (21) carried by a sleeve (22). A conical clutch member (4) is mounted on the sleeve (22) is such manner that it can rotate, but it is normally kept free of the
casing (2) by the spring. It is adapted to he forced into engagement by a cam member (8) and lever (9) against the action of the spring. To obtain the top speed, or direct drive, the cone clutch (4) is moved by the cam (8) and levers (9) into engagement with the casing (2) whereupon the casing (2), member (4) and
pinion (21) become locked together so that the sleeve (11) will rotate with the shaft (1). The second speed is obtained by releasing the band brake (5) and clutch (4) and applying the band brake (6) to the casing (3) ; the drive in this case will be transmitted through the pinion (27), tooth wheels (25, 28) to the tooth wheel (29) and sleeve (11). For obtaining the first or slowest speed the band brake (6) will be released and the band brake (5) applied to the casing (2), power being transmitted through the tooth wheels (15, 16, 18, 19) to the sleeve (11). To reverse the direction of the drive the cone clutch (4) is held stationary by applying the band brake (7) so that the tooth pinion (21) on the sleeve (22) is held fast and the gear wheels on the spindle (17) driven by the pinion (15) revolve around the pinion (21). Thus the pinion (19) on the sleeve (11) is driven in the opposite direction.
BOILER FIRING APPARATUS.Mann—No. 14,469N1 dated 24th June, 1907.—This invention relates to an im
proved arrangement for firing the boilers of steam lorries. A hopper (a) containing the fuel is mounted above the furnace and communicates with it through a cylindrical casing (c). Arranged at the upper end of the casing (c) is a sliding door (i) which is opened and closed by means of a lever (o) pivoted at 23 and connected to the slid ing door by a link (y). At the bottom of the casing is another door (m) ; this one is provided with a handle (a) by means of which it is opened and closed. The casing (c) is also provided with a hinged door (d) by means of which the driver can attend to, and observe the state of, the fire. In operation the fuel in the hopper (a) is admitted to the cylindrical casing (c) by opening the door (1); then this door is closed and the door (m) opened so that a measured amount of fuel is supplied to the furnace at each operation.
DYNAMO • ELECTRIC TRANSMISSION OF POWF,R.—Haydon and Another.—No. 4,813, dated 27th February,
1907.—The driving 1-izift (a) carries a spur wheel (c) which gears with spur wheels (d) loosely mounted on spindles (e) carried by a disc (f) which is keyed to the shaft (b). Pinions (g), which are rigid with the spur wheels (d), gear with a spur wheel (h) which is co-axial with the shaft (a) and is secured to the casing (i) enclosing the gearing. The driving shaft (b) carries an armature (k) of a dynamo-electric machine, and the field magnets (m) are carried by the. casing (i) and are energised by the coil (1). When the shaft (6) is stationary and the shaft (a) is rotating the casing (1) and magnet (m) will rotate in the same direction. If the magnet is energised it will exert a torque on its armature and will thereby cause the shaft (b) to rotate. The tendency of all three parts, viz., shaft (a), magnet (m), and armature (k) will be to rotate at equal speeds, but, in practice, there will be a slip or lag of the arma ture (k) behind the magnet (in) which will increase with the mechanical resistance opposed to .the rotation of the shaft (b).