1
A self-loading brush or broom for underwater surfaces. Donald Dunnet, January 6, 1947: GB584029-A (8 worldwide citation)

584,029. Brushes and mops. DUNNET, D. Oct. 19, 1944, No. 20209. [Class 19] A brush for sweeping underwater surfaces is provided with a movable vane which is spaced from the. stock and constructed so that the pressure of the water will cause the bristles to press against the surface to be cleaned as ...


2
Device for collecting dirt and other solid matter from underwater floors. Donald Dunnet, June 25, 1946: GB578354-A (4 worldwide citation)

578,354. Cleaning building floors. DUNNET, D. Oct. 10, 1944, Nos. 19425/44 and 8351/45. [Class 138 (i)] A device for cleaning and collecting, dirt from the floors of swimming pools &c. without emptying, comprises a sweeper adapted to be moved over the floors by means of a pole 43 having a universal ...


3
A display device using liquid bubbles in another liquid. Donald Dunnet, February 10, 1954: GB703924-A (2 worldwide citation)

703,924. Changing display devices. DUNNETT, D. Dec. 20, 1951 [Dec. 21, 1950], No. 31114/50. Class 3(1) A display device comprises an upper layer' of liquid 2 and a lower layer of liquid 3 in a transparent container 1, the two liquids being non-miscible and the upper layer being of lower specific gra ...


4
A timing device. Donald Dunnet, July 25, 1951: GB655598-A

655,598. Timing devices. DUNNET, D. Oct. 5, 1948, No. 25991. [Class 139] A " liquid " hour-glass, Fig. 1, is formed by a tube 1 divided at its centre into two compartments by a block 2. The compartments are interconnected by two passages 3 and 4, one of which is at the periphery of the block, and co ...


5
A cleaner for flat surfaces. Donald Dunnet, July 13, 1955: GB733621-A

733,621. Cleaning pads; reservoir pads. DUNNET, D. March 11, 1953 [March 13, 1952], No. 6527/52. Class 19. A cleaning or polishing device comprises a multifaced backing block around which is passed an endless band of cleaning material of much greater length than the periphery of the block, the devic ...


6
A centrifugal sprayer for liquids. Donald Dunnet, November 23, 1948: GB613172-A

613,172. Spray-producers. DUNNET, D. June 14, 1946, Nos. 17858/46 and 10731/47. [Class 69 (iii)] A paint or like sprayer comprises a casing 3 fed with liquid from a reservoir 6 through a valve 7 and a wheel or disc 1 driven from a motor 5 which centrifugally projects liquid through a slot 4 in the c ...