Abstract: A track construction is provided for tracked vehicles such as tanks which comprise alternate track members and connection members which are connected together by transverse connecting pins. The track members comprise first and second spaced, parallel sets of transversely extending tubular members connected together by a bridging member, the tubular members of each set being axially aligned and spaced apart to form gaps therebetween. The upper surfaces of the bridging members contact the wheels of the vehicle while ground-contacting pads are mounted on the track members on the opposite side thereof from the wheel contacting surfaces. The connection members also include wheel contacting surfaces and engage the connecting pins at locations between the gaps defined by the tubular members. The wheel contacting surfaces of the bridging portions of the track members are recessed at these locations and portions of the wheel contacting surfaces of the connection members project into the gaps.

Abstract: A device for the setting and automatic regulation of the mixture ratio of a gas/air mixture for industrial furnaces comprises two coaxially-arranged diaphragm pressure gauges, connected in opposition, via a ratio setting mechanism, for the gas and the air, and a throttle member, controlled by the diaphragm displacement, in the gas or the air feed pipe. The two diaphragm pressure meters each are oppositely acted upon on only one side by the gas pressure or the air pressure respectively. The throttle member is controlled directly by the diaphragms. The diaphragm pressure gauges and the ratio setting mechanism together with the throttle member are designed as a structural unit.

Abstract: A track construction, provided for tracked vehicles such as tanks, comprises alternate track members and connection members which are connected together by transversely extending connecting pins. The track members each comprise first and second spaced, parallel sets of transversely extending tubular members connected together by a bridging element, the tubular members of each set being axially aligned and spaced apart laterally to form gaps therebetween. The connection members each include a wheel contacting surface, and ground contacting pads are mounted thereto on the opposite side thereof from said wheel contacting surface. The track members also each include a wheel contacting surface and preferably include ground contacting pads or the like, the ground contacting pads of the track members and the connection members being arranged in a longitudinally staggered relationship, intersecting beneath the connecting pins.