Collar iron

This appliance was used to iron separate shirt collars and make sharp creases in trousers. It was patented by R. R. Bollman in 1932 (US patent 1,889,432). The device has a wooden handle fitted with a 37 watt tubular heating element. An electric lead runs through the handle. Two chrome-plated flaps pressed together by a spring are mounted on the tubular heating element.