Domestic electrical food processing appliance

Electrical food processing appliance comprising a base, a work bowl supported on the base, a detachable cover for the work bowl, engaging means arranged upon relative rotary movement between the cover and the bowl to hold the cover in a closed position on the bowl, a motor unit mounted in said base, said motor unit having an output shaft extending within said work bowl, a work tool arranged within said bowl and carried by said output shaft, a switch for controlling said motor unit, and a push-button for actuating said switch, wherein said base has a boss adjacent to said bowl and said push-button is mounted in said boss for movement between a rest position and an operating position in which it actuates said switch, the appliance further comprising a safety bolt mounted in said boss for movement between a locked position in which it maintains said push-button in its rest position and an operative position in which it permits movement of the push-button to its operating position, return means urging said safety bolt into its locked position, an arm carried by said cover arranged to engage in a slot in said boss and to move said safety bolt into its operative position against the urging of said return means when the cover is moved into its closed position on the bowl, and locking means arranged to automatically lock the safety bolt in its operative position, said bolt having a capture lug which, when the bolt is in its said operative position, engages said arm on the cover when the cover is moved in a direction to remove the cover from the bowl, said locking means for the safety bolt comprising a finger carried by the push-button and arranged to contact said bolt when the push-button is moved into its operating position.

Electrical food processing appliance comprising a base, a work bowl supported on the base, a detachable cover for the work bowl, engaging means arranged upon relative rotary movement between the cover and the bowl to hold the cover in a closed position on the bowl, a motor unit mounted in said base, said motor unit having an output shaft extending within said work bowl, a work tool arranged within said bowl and carried by said output shaft, a switch for controlling said motor unit, and a push-button for actuating said switch, wherein said base has a boss adjacent to said bowl and said push-button is mounted in said boss for movement between a rest position and an operating position in which it actuates said switch, the appliance further comprising a safety bolt mounted in said boss for movement between a locked position in which it maintains said push-button in its rest position and an operative position in which it permits movement of the push-button to its operating position, return means urging said safety bolt into its locked position, an arm carried by said cover arranged to engage in a slot in said boss and to move said safety bolt into its operative position against the urging of said return means when the cover is moved into its closed position on the bowl, locking means arranged to automatically lock the safety bolt in its operative position, said bolt having a capture lug which, when the bolt is in its said operative position, engages said arm on the cover when the cover is moved in a direction to remove the cover from the bowl, said locking means for the safety bolt comprising a latch mounted in the boss for movement between an extended position in which it maintains the bolt in its operative position and a withdrawn position in which it permits movement of the bolt into its locked position, and return means urging said latch into its extended position.