Abridgments of Interesting Patent Specifications.

Progress, Volume I, Issue 3, 2 January 1906, Page 58

Abridgments of Interesting Patent Specifications.

No. 20,597, September 24th 1905. — Clutches and ' brakes for motor vehicles —P. Riley —A clutch drum (B) is mounted on the driving shaft (A), and the driven shaft (C) extends o^er the end of the dnven shaft and has a thimble bearing on the latter. A disc (E), piovided with lugs (Ei, E2), is attached to a rotary flange (D) on the driven shaft, the lugs being diametrically opposite to one another Integral with the discs (E) are spring arms (F, Fi), adapted to he around the circumference of the disc (E). A diametric wedge (H) sliding in guides on the lugs (Ei, E2) engages with anti-friction rollers on the ends of the spring arms ; (G) is a cross bar attached to the

lug (Ei), and (X) a similar bar formed on the wedge (H). These cross bars are connected by springs (L), and have a tendency to force the wedge between the friction rollers on the arms (F, Fi). A bell crank lever (M) engages the sliding wedge and is engaged by a sliding collar (N), operated by a clutch fork. When the collar is moved towards the clutch,

the wedge (H) is drawn down and frees the spring arms so that they are out of engagement with the clutch drum, and when the collar (N) is released the springs force the wedge between the ends of the arms and cause them to engage with the drum (B).

No. 16,363, dated July 25th, 1905.— Bearings for wheel gearing.— John H. Hindle, Denton.— The shaft to which the worm (W S) is fixed is driven direct from the motor (INI) and is carried in bearings m the gear-case, the bearings being arranged to take the end thrust of the worm shaft. The case containing the gear is made in three portions (Ci, C 2, C 3), m the extension of one of which the motor is carried. (S C) and (A S) are two solid couplings

The ball races (S) are stationary and attached to the bearing (B), whilst the revolving races (R R) are attached to the shaft. The thrust is transmitted by the collars (c), and the pull by the lock nuts (n), to their respective ball bearings, thence to the solid bearing (B), and by means of the flanges (f) to the gear case.

No. 1,044, dated January 19th, 1905.— Piston rings. —P. Enfield Downson. — The piston ring

is constructed m two parts, a lower or under part (A) of angle or "L " section, and an upper part (B) of square or rectangular section. The upper rectangular part (B) of the ring is placed in the angle of the lower part (A), and is of a size and shape to exactly coincide therewith, thus

forming a compound ring The t\\ o rings are turned with a slightly larger outside diameter than the bore of the cylinder, and cut in the usual manner, so that when the ends are sprung together they fit the bore of the cylinder, and are so arranged relatively to one another that the joints come at different parts of the penpheiy, preferably diametrically opposite to one another.The piston is formed with an annular groove, into which the rings (A and B) are sprung, or a junk ring may be fitted on the end of the piston to form the groove and to hold the rings in position. The compound rings (A and B) are employed in pairs, placed m a single broad groove in the piston, back to back, with an intermediate ring or spring (E) between them to act laterally to force the two compound rings agamst the sides of the grooves, thereby moie effectually preventing leakage past them.

No. 7,711, dated April nth, 1905 —Radiator. — Lamplough and Albany Co —Five flat tubes are shown ; (b, b) are the upper and lower paits of the tank with which the ends of the said tubes communicate , (c, c) are gills or radiating surfaces soldered to said tubes. The gills or radiating

surfaces (c, c) aie formed from btampings of sheet metal bent into trough-shaped form and having flanges (c 2) preferably serrated, and apertures (03) The gills not only act as distance pieces between

the flat tubes rendering the construction strong, but the air entering the spaces (05 and d) can, bypassing through the apertures (03), travel vertically towards the centre of the fan, thus causing the air

passing between the upper and lower portions of the flat tubes (a) that are away from the centre of the radiator, to have a greater cooling effect than if it passed through the spaces (05 and d d).

No 18,045, dated August 19 th, 1905. — Car buretter —Hamilton. — Fuel is fed to the mixing chamber (A) by a nozzle (C) Free to slide m the mixing chamber is a sleeve (Ci) At the upper end ot this sleeve are apertures (B2) by which the interior ol the sleeve may communicate with the cylinder of the engine by passage (A 2) At the

base of the sleeve are other apertures (B3) which co-operate with openings (Ei) in a ring (E) surrounding the lower end of the tube. The ring (E) lies m an annular space (A3) m communication with the atmosphere by an inlet (Ai), and can be

partially rotated by a lever (E2) so that its apertures are brought more or less into, or out of, register, with those in the lower end of the sleeve (Ci). The sleeve (Ci) may be raised and lowered by hand or automatically, but it will be observed that when it is raised to partially throttle the (Ci). The sleeve (Ci) may be raised and lowered outlet (A 2) the inlets for air through the orifices (B3) are correspondingly restricted, although these can be further separately controlled by the ring (E)