Patent GB-837570-A (GB)
Title: Improvements in or relating to electric steam irons
IPC: D06F75/16
Filed: 1957-10-14
Abstract: 837,570. Steam irons. SCHREYER, E. P. Oct. 14, 1957, No. 32062/57. Class 138 (2). In an electric steam iron of the kind comprising a sole-plate 11 (Fig. 1), a handle 13 fixed to the boiler 10, an electric heating element 12 arranged to heat the plate 11, and the boiler 10, and a steam dome 24 with means for filling the boiler 10 therethrough, the dome 24 extends upwardly into a cavity 54 in the handle 13 and has a filling opening 62, a cover 67 hinged at 66 carrying a spring-loaded closure-member 84 for the opening 62. The boiler comprises a shell 14 and a floorplate 15, forming cavities 21 and 18, with end walls engaging each other, the walls 22 and 19 having apertures for the setting means for adjustable thermostatic control means in the cavity 18 and electrical conductors with suitable sealing means. The end 53 of the handle is so attached to the boiler 10 having a baffle 31 that the cavity 21 provides an air space. The member 84 is urged against the opening 62 and a sealing-ring 58 by a spring 87 and is held closed by latch means at its lower end. The latch means comprises a hook 82 fixed to the plate 61 and a slotted slide-bar 69 (Figs. 1 and 4)) in a guide 68 mounted in the cover 67 to pass through a slot 83, one end of which it engages. The closure member 84 comprises a disc carried by a stem 85 having a head 86 and on which slides a washer 88 urged by the spring 87 towards the head 86 which engages the opposite side of the guide 68 to the washer 88, the stem 85 passing through a slot 89 in the guide 68 so that the closure member slides on the slide-bar 69. The head 86 passes through the enlarged end of the slot 89, of keyhole shape, a cooperating slot 91 in the slide-bar 69 which receives the head 86 being arranged normally to take up a position to prevent movement of the head 86 into register with the enlarged end of the slot 89. The said setting means include an abutment, adjustable to determine the tempera. ture at which its contacts 92, 93 (Fig. 6) are opened and comprising a screw 103, having a head 106 and an arm 109 apertured at 108 retained in engagement with the head 106 by a spring 111. The element 12 is substantially U-shaped (Fig. 5) with ends extending transversely of the iron with the thermostatic control means 91 therebetween. The proportion of the length of heating element in any transverse segment to the mass thereof is substantially constant, to give substantially even heat distribution. The plate 61 is attached by a screw 64 to secure the handle to the boiler 10 at the front (Fig. 1), two screws 65 doing so at the rear, where a cavity 55 is closed by a removable plate 56 for the conductor binding posts, the screw 45a at one end of the strip 45 therein being connected to an earthing wire. The plate 11 is secured to the boiler 10 by a screw 44 and a sleeve 43 screwed on a tube 28 receiving steam through radial holes 48 from the chamber 35 closed by a plate 46 held in position by a screw 47 in the sleeve 43 and having holes, e.g. 49, for the escape of steam. The iron can be supported on its heel by a pair of rubber studs 127 secured to the boiler 10 by screws 128 in bosses 129. In a modification, the closure member comprises a ring of sealing material clamped between two metal discs and bears against a chamfered metal surface.