Abridgments of Interesting Patent Specifications.
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No. 2a,597, September 24th,
Clutches and brakes for motor vehicles.— P. Riley, Coventry,—A clutch drum (B) is mounted on the driving shaft (A), and the driven shaft (C) extends over the end of the driving shaft and has a thimble bearing on the latter. A disc (E), provided with lugs (El, E2), is attached to a rotary flange (p) on the driven shaft, the lugs being diametrically opposite to one ano
ther. Integral with the discs (E) are
spring arms (b., Fl), adapted to lie around the circumference of the disc (E). A diametric wedge (H) sliding in guides on the lugs (El, E2) engages with anti-friction rollers on the ends of the spring arms; (G) is a cross bar attached to the lug (El), and (K) a similar bar formed on the wedge (13). These cross bars are connected by springs (L), and have a tendency to force the wedge between the friction rollers on the arms (F, F1). A bell crank lever (1%.11 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 clown 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, 1904.— Bearings for wheel gearing.—John H. Hindle, Denton.—The shaft to which the worm (W S) is fixed is driven direct from the motor (M) and is carried in bearings in the gear-case, the hearings being arranged to take the end thrust of the worm shaft. The case containing the gear is
made in three portions (C1, , C3), in the extension of one of which the motor is
carried. (S (2) and (A S) are two solid couplings. The ball races (S) are stationary and attached to the hearing (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 gearcase.
No. 1,044, dated January igth, Piston rings.—P. Enfield Downson, Gee Cross, Hyde.—The piston ring is constructed in two parts, a lower or under part (A) of angle or " I." section, and an upper part (B) of square or rectangular section. The upper rectangular part (Bi of the ring is placed in the angle of the lower part (A), and is of a site and shape to exactly coincide therewith, thus forming a compound ring. The two rings are
turned with slightly larger outside diameter than the bore of the cylinder, and are 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 periphery, 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 to 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 in 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 against the sides of the grooves, thereby more effectually preventing leakage past them.
No. 7,711, dated April irth, iga5.— Radiator.—Lamplough and Albany Co.— Five flat tubes are shown ) (b, b) are the upper and lower parts of the tank with which the ends of said tubes communicate; (c, el are gills or radiating sur faces soldered to said tubes. The gills or radiating surfaces (e, c) are formed from stampings of sheet metal bent into troughshaped form, and having flanges (c2). preferably serrated, and apertures (c3). The gills not only art as distance pieces between the fiat tubes rendering the construction strong, but the air entering the spaces (c3 and d) can, by passing through the apertures (c3), 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 oentre of the radiator, to have a greater cooling effect than if it passed through the spaces (c3 and d d).