Lampchanger for a light

In a lampchanger for a light having a rotatable turret for holding a plurality of lamps having a locking pin on the lamp bases, fixed power contacts for engaging the lamp positioned in the operating position, and means for rotating the turret, the improvement in said turret comprising,

• a turret body,
• a clamp coacting with the body for holding and locking the lamps between the clamp and the body,
• said body and clamp having coacting openings for receiving the bases of said lamps,
• said body and clamp each having a holding shoulder for engaging the locking pins of said lamps therebetween, and
• spring means yieldably urging said clamp and body together whereby lamps may be inserted and removed from between the body and clamp.

A lampchanger for a light comprising,

• a rotatable turret for holding a plurality of lamps and including a turret body, a clamp coacting with the body for holding and locking the lamps between the clamp and the body, and spring means yieldably urging said clamp and body together whereby lamps may be inserted and removed from between the body and clamp,
• a fixed electrical contact within said turret including a spiral electrical conducting spring spiraling outwardly from the axis of the turret with its most outward extent toward the lamp being positioned to engage the lamp in the operating position,
• means for rotating the turret,
• a C-shaped insulator supporting said contact, said insulator including a recess for receiving and supporting the contact compressed into the recess upon contact with a lamp, and
• the gap in the C-shaped insulator is positioned in advance of the lamp operating position at the location where a lamp first engages the contact.

A lampchanger for a light comprising,

• a rotatable turret for holding a plurality of lamps which have at least one locking pin on the lamp bases, said turret including,
• a turret body,
• a clamp coacting with the body for holding and locking the lamps between clamp and the body,
• said body and clamp having coacting openings for receiving the bases of said lamps,
• said body and clamp each having a holding shoulder for engaging the locking pins of said lamps therebetween,
• spring means yieldably urging said clamp and body together whereby lamps may be inserted and removed from between the body and clamp,
• the face of the clamp coacting with the body is tapered downwardly and inwardly for allowing the insertion and removal of holding pins on the lamps,
• means for rotating the turret including a shaft extending coaxially in the turret,
• at least one fixed electrical contact within the turret for contacting a lamp in the operating position, said contact including a spiral electrical conducting spring spiraling outwardly from the axis of the turret with its most outward extent towards the lamps being positioned to engage the lamp in the operating position, said spring being a flat spring having a free portion of more than 45 degrees with the free end located adjacent the operation position, and the spring extends outwardly sufficiently to make contact with a rotating lamp in advance of the lamp operating position,
• a C-shaped insulator about the shaft and support said contact, said insulator including a recess for allowing the free end of the contact to be compressed into said recess upon contact with a lamp, said gap in the C-shaped insulator positioned in advance of the lamp operating position at the location where a lamp first engages the contact.

In a lampchanger for a light having a rotatable turret for holding a plurality of lamps having a locking pin on the lamp bases, fixed power contacts for engaging the lamp position in the operating position, and means for rotating the turret, the improvement in said turret comprising,

• an annular vertically extending turret body connected to a rotatable horizontal shaft,
• an annular movable vertically extending clamp coacting with the body for holding and locking the lamps between the clamp and the body,
• said body and clamp having coacting openings for receiving the bases of said lamps, and
• spring means yieldably urging said clamp and body horizontally together whereby the lamps may be inserted and removed from between the body and clamp.