Abstract: An improved carburetor having a mixing passage adapted for connection to an internal combustion engine, a pair of venturi plates pivotally mounted in the passage positioned in response to vacuum generated by the engine, a fuel spray bar extended across the passage, a primary fuel system for supplying a primary fuel to the bar automatically controlled in response to the positions of the plates, and an enrichment fuel system for supplying an enrichment fuel to the bar automatically controlled in response to the positions of the plates independently of the primary fuel system.

Abstract: An assembly for mounting a work object on a vehicle or the like in a predetermined position relative to a pair of members borne by the venicle, the assembly having a first component mountable on one of the members adjacent to the predetermined position and a second component having a work object mount and adapted for releasable attachment to the first component and for slidable attachment to the other of the members to support the work object mount in the predetermined position.

Abstract: An assembly for adjusting first and second portions of a vehicle relative to each other, the assembly having a main frame adapted to be secured on the first portion of the vehicle in fixed relation thereto with the second portion of the vehicle above the main frame in an unadjusted relationship; a subframe mounted on the main frame in upstanding relation adjacent to the second portion of the vehicle; and a belt interconnecting the main frame and subframe and being tensionable to engage the second portion of the vehicle in supporting relation thereto.

Abstract: A carburetor for connection to an internal combustion engine having a housing provided with a mixing passage for the flow of air to the engine; a throttle at the downstream end of the passage; a fuel spray bar extending transversely across the passage upstream of the throttle having transversely oppositely disposed fuel orifices facing the walls of the passage; a pair of venturi plates mounted for pivotal movement about individual axes upstream of the bar and spaced oppositely and transversely from the bar, the plates having distal ends and pivoting between closed, convergent positions in which the distal ends are adjacent to the bar and open positions in which the plates diverge from the bar, thereby defining an adjustable throat; a source of fuel; a conduit interconnecting the orifices and the source; a plunger-actuated valve in the conduit for controlling the flow of fuel from the source; a rotationally mounted cam adjacent to the valve having a cam surface in controlling relation with the valve; and a lin