Mounting and testing of electrical devices using a lever operated bay for receiving the electrical devices

A bay for receiving an electrical device having a rearwardly facing electrical connector, a rearwardly facing abutment surface, and a forwardly facing abutment surface,

• said bay comprising a front aperture for receiving a said electrical device, a rear portion having an electrical connector for connecting to the electrical connector of said electrical device, a sliding carriage bearing an ejection member having a forwardly facing abutment surface for engagement with the rearwardly facing abutment surface of the electrical device, said carriage being mounted for sliding movement in the bay, and a lever operated insertion and removal mechanism for the insertion and later removal of said electrical device, said mechanism comprising a pivoted lever having a manually engageable actuating portion, an abutment member carried by the lever for engagement with the forwardly facing abutment surface of the electrical device, and a rotary gear member driven by said lever and operatively coupled to the sliding carriage, whereby said lever is pivotable from a first position in which said front aperture of the bay is open for receiving said electrical device and said carriage is slid forwardly, via intermediate positions in which said carriage and said ejection member are driven progressively rearwardly by the action of said rotary gear member and the abutment member of the lever bears against the front abutment surface of the electrical device to push said device into said bay, to a second position in which said carriage is driven fully rearwardly and said device is brought to a position in the bay where the electrical connector of the device connects to the electrical connector of the bay, and whereby the electrical device can be ejected from the bay by reversal of the movement of said lever from said second position to said first position to drive said carriage forwards in the bay with said ejection member bearing against the rearwardly facing abutment surface of the device to drive the device out of the bay.