Abridgments of Interesting Patent Specifications.
Page 18
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Rene's Sparking Plug; David's Wheel Oiler; Rex Air Sprayed Valves; Le Page's Variable Piston Stroke.
No. 4,052: Dated February 27th, i9o5. T. F. Rene, Snow Hill, London.—A sparking plug constitutes the subject matter of this invention, comprising a terminal wire (a) having a shoulder (f) and pin (i). The wire is mounted in a tube (6) provided with a nut (di), a sleeve of insulating material (c) being placed over the tube and secured by the nut. The end of the terminal wire remote from the pin (if. is screw-threaded, as at e and the wire is secured in place by a nut (g) locked, if desired, by a second nut (h). The insulating sleeve (a) is preferably built up of thin mica washers clamped together between the nut fat) and a shoulder (d) on the tube (b). A movable member within the engine cylinder co-operates with the pin (1) to produce the spark.
No. 15,928: Dated July 18th, 1904. W. David.—This specification describes a
Peg./
neat means for oiling wheel bearings. The space between two of the wheel spokes is enclosed by plates (b, bi) to constitute an oil chamber (a). An orifice (di) is provided in this chamber, and has mounted within it a pin (e). The pin has an extension (a1) slotted to engage a transverse pin (c) secured in the walls (b, At the wheel rotates the pin (e) reciprocates so that oil passes in some quantities to the bearing. The chamber (a) is filled through an orifice (h) normally closed by a spring. controlled plug (i).
No. 15,091 : Dated July 6th, 19o4. G. Pilltington, the Rex Motor Works, Coventry.—This specification describes a neat form of cylinder and valve casing, which permits the passage of air between the cylinder and valve casings for cooling purposes. The cylinder (( end valve casings (A and B) are cast in one piece, and a space (E) is left between the. two valve casings for the passage of air. The valve casings are firmly retained in position by the radiation ribs (Hi, and the top and bottom ribs (III, 1.12) may be thickened if desired, to provida additional strength to these parts. No. 2,711; dated February 3rd, 1904.L. M. Le Page, of Algerie, France.--This is an attempt to vary the power of an internal combustion motor by varying the length of the piston stroke by means of a link motion. The piston (b) has a guide (c), and its rod (d) is pivotally connected at (e) to a link (f). One end of the link (f) is pivoted at g2 to a member (It), cooperating with a crank (i) on the driving shaft (j). The other end of the link is pivoted at / to a quadrant (m) controlled by a worm (r). By varying the position of the quadrant, the stroke of the piston is varied, as shown by the relative positions of the pins (1 and g) indicated at It gl, and /2 and g2; the corresponding distances of travet of the point e indicated at a al a2.
A steam wagon is working between Waterford and Dunmore with great satisfaction for the carrying of goods in conjunction with the railway. Two journeys are performed daily.
Four firms were invited to tender for the construction of the two steam municipal wagons required by the St. Pancras Borough Council, and these firms gave a trial with their wagons on June 2nd. Accordingly four wagons—a Londonderry, a St. Pancras, a Thornycroft, and a York. shire—turned up at the Adelaide, at the bottom of Ha.verstock Hill. The Thornycroft was fitted with a slop body, but the other wagons had ordinary carrying bodies. Each wagon carried a load representing five tons. The first test was up a short steep stretch of road leading from the back of the Adelaide to the bridge on the London and North-Western Railway, and then down a short hill into the Adelaide Road. All four wagons went up the bill at a fair pace, and successfully passed the test. The next test was more severe— up Haverstoc.k Hill to the Hampstead Town Hall. The steepest part is paved with setts. Here two of the wagons stopped--the Yorkshire and the St. Pancras. The Yorkshire was soon away again, but it was some minutes hefore the St. Pancras was restarted, for it was on a piece of the road where the setts had worst smooth. The Londonderry and the Thornycroft wagons went up without a hitch, and probably the decision of the Council will rest between these two wagons, but at the time of writing we know nothing definite.
Ten tenders were actually received from various firms, and we are unable to understand why only the four firms mentioned were asked to submit trial vehicles and the others shut out.