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 Sales Branch, Patent Office, Holborn, W.C.
tion No. 16,110/06, and it has for its object to provide an improved rim for this class of wheel. The rim is of channelshape cross section and has inturned edges which are adapted to grip the heads of the solid tire. The side faces of the rims are so ma-chined as to form lips or shoulders against which annular plates abut, and they are riveted and soldered to the rim. These plates are preferably made of manganese bronze or other highlytensile metal. These annular plates act as guides for the rubber pads which are attached to the free ends of the springs.
SIGNALLING DEVICE.—Faulkner. —No. 16,2931908, dated 21st January, 1909.—This device is intended to give warning and to indicate the movements of a motor vehicle to the traffic which is following behind. It comprises a small box which is adapted to be fitted on the hack of the vehicle, and two pointing hands and a triangle. The pointing hands are pivoted, one at each side of the box, and are adapted to be swung out laterally, through slots provided in the wall of the box, by suitable mechanism connected to the steering gear. Thus. when the steering gear has been actuated to steer the vehicle to the left, the hand at the left-hand side of the box is swung out laterally. The triangle is connected by suitable gear with the brake pedal, and, when the latter is applied, the tri.
angle is projected through a slat provided in the top of the box. The movements of these various signalling devicus are also conveniently emploved to close an elcetrical circuit, thereby ringing a bell to give an audible warning. In order that the device may be. used at night, the various signals are painted on a glass or other suitable screen. and a lamp is arranged behind each sign.
CARBURETTER. — Maxim. — No. 24,790, dated 18th November, 1908.— This carburetter comprises a tubular casing having an air inlet at the lower end thereof and a connection to the inductioa pipe at the upper portion. This casing is water-jacketed, approximately midway of its length, and has, mounted concentrically within it, a tubular cham
ber having perforated walls. The tubular chamber is closed at its upper end, except for a funnel-shaped member, which establishes communication between the latter chamber and the upper portion of the outer casing. The lower end of the tubular chamber is closed by a cap, which latter accommodates the fuel-inlet nozzle. Within the tubular chamber, is a piston carried by a sleeve. This sleeve is closed at its upper end, arid is secured
to a central spindle, and the lower end tits over the fuel nozzle when theengine is not running. That portion of the sleeve on the upper side of the piston is perforated. The central spindle extends down through the fuel nozzle, and its cross-section, from the point_ ,shere it enters the fuel nozzle,
gradually takes the form of a triangle, so that, when the spindle is raised by the movement of the piston, a greater area for the passage of the fuel is provided_ The spindle is normally pressed downwards by a spiral spring that is interposed between an adjustable nut and a flange block that bears against the upper end of the spindle. On starting up the engine, the suction caused by the latter raises the piston within the tubular chamber so as to uncover the fuel nozzle, and air is drawn through the perforations in the lower portion of this chamber past the fuel nozzle and up the sleeve of the piston. Thence it passes through the perforations in the top of the sleeve into the upper portion of the tubular chamber and then through the funnel member on its way to the induction pipe. It will be seen that, as the suction of the engine varies, the piston will be raised a greater or less amount, and will thus uncover more or less of the perforations provides in the wail of the tubular chamber. At the same time, the spindle will also be raised a greater or less amount, and the area of the opening in the fuel nozzle will be correspondingly increased or decreased: thus a constant mixture of fuel and air is obtained at all speeds of the engine.
MOTOR PLOUGH. — Stock. — No. 26,207 of 1909, dated under Convention 14th November. 1908.—According to this invention the frame of the plough is carried by the driving wheels in such a manner that the weight of the plough is. balanced in the axial direction of these wheels. The supporting or driving wheels are driven by the motor through a suitable differential gear, the driving shaft of which has mounted on each end a pinion which engages internal teeth provided on the driving wheels. The driving wheels are mounted on independent axles, which latter are carried by arc-shaped brackets, the arc of which ic concentric with the driving pinions._ This permits the height of the frame to. be adjusted relatively to the driving wheels without interfering with the drive of the latter. A number of ribs is secured to the tread of the driving wheels, and these ribs are inclined to the tread: in the direction of driving. This arrangement permits the ribs to leave the ground easily, and, at the same time, it insures the necessary frictional resistance. A steering wheel is arranged in the front of the plough, and is provided with a knife.
edge which cuts into the ground so as tee give the wheel the grip necessary, tte control the direction of the machine.