Patent GB-169199-A (GB)
Title: Electric faucets
IPC: F24H9/20
Filed: 1920-05-18
Abstract: 169,199. Clover, H. K.. May 18, 1920. Heating by electricity.-In a flow heater for liquids, Fig. 4, the clock handle C when turned in one direction rotates a cap 34 connected by teeth gearing with a switch casing 2 so as to close the switch with snap action. On returning the handle to its mean position the switch is opened with snap action. When the handle C is turned in the opposite direction the switch is not actuated and cold water is supplied. The stationary switch members, such as 48, are secured to a porcelain or like base 42 having a peripheral upstanding flange 42a, the space within which may be filled with oil. The movable switch members 50, 52, Fig. 16, are secured to a plate 55 rotatable about a pillar 54 secured to the base 42. A second pair of movable contact members 51, 53, Fig. 18, is secured to the plate 55 and insulated from the first pair. In the position shown in Fig. 18 the circuit is made, current passing from one lead m to the contact 48, through contacts 52, 50 to stationary contact 46, through the resistances to stationary contact 49 and through the contacts 53, 51 to stationary contact 47 which is connected to the second lead. The plate 55 is normally retained in one of two positions by balls 57 which are pressed upwards by springs 59, housed in the base 42,2 through holes in a stationary plate 56, and enter recesses 66 in nthe plate 55. The plate 55 is provided with upstanding finger 61 on either side of which are two fingers 62 nearer the centre of the plate. The finger 61 is disposed between the crossed free ends of a coil spring 53, Fig. 10, mounted on the pillar 54. A cocking device 63 is mounted loosely at the top of the pillar 54 has a depending finger 63a disposed between the ends of the spring and at the same distance from the centre of the pillar as the fingers 62. When the tap C is turned so as to supply hot water the cocking device 63 is rotated by engagement of a lug on the casing 2 with a finger 63<c> on the coking device. Energy is stored up in the spring 53 until the finger 63<a> engages one of the fingers 62 causing the plate 55 to ride over the balls 57. The plate 55 being free is then urged to a second position in which the switch is closed. The motion is limited by engagement of a lug 64 on the plate 55 with the ends of a groove in the lower plate 56. At the end of the travel the balls 57 enter a second pair of recesses 60. Fig. 18 shows the means for actuating the cocking- piece. On the under face of the casing 2 are mounted a fixed lug 68 and a second lug 69 on a plate 69<a> mounted on a slide block 69<b> fixed to the casing, a spring 69<e> being interposed between the block and the plate. In closing the switch the lug 68 engages the finger 63<c>. When the handle C is returned to its mean position the lug 69 engages the finger 63<a> and turns the cocking device in the opposite direction, causing the switch to be closed in a manner similar to its opening. When the handle C is turned to the opposite side of its mean position, a lug 69<b> on the plate 69a engages a cam 70 attached to the base 42. The plate 69<a> is thereby forced along the block 69<b> so that the lug 69 no longer engages the finger 63a; the switch is therefore not actuated and cold water is supplied. The switch base 42 is secured to the heater body 29 by the connecting screws for the leads m and by a screw 43, which also secures the cam 70, taking into a lug 44, suitable insulation between the base 42 and the body 29 being provided. Water passes from the inlet D through annual chambers d, e, containing the heating resistances F, G and a chamber p containing electrical connections m<1>, tu the cock B which is provided with two passages h for hot and cold water respectively. The chambers d, e, p are formed by superposed bodies 25, 26 which also enclose an air space 27a. The lower body 26 rests on a plate provided with apertures. The cock B is conical and is held on its seat by a spring 38 bearing against a washer held in place by a pin 39. The cap 34 is coupled to the handle C by a pin 41. The intermeshing of the teeth on the cap 34 and the casing 2 may he varied so that the heating circuit is made before the water is turned on or vice versa. The teeth on the cap 34 and the casing 2 are covered by a skirt 36.