GB433606A - Improvements in or relating to suction cleaners - Google Patents

Abstract

433,606. Suction cleaners. HOOVER, Ltd., Perivale, Greenford, Middlesex.-(Assignees of Smellie, D. G. ; 357, 23rd Street, Canton, Ohio, U.S.A.) March 26, 1935, No. 9450. Convention date, May 24, 1934. [Class 8 (i)] In a suction cleaner comprising a container usually mounted on skids containing a suction fan, a driving-motor, a filtering-device and a flexible hose carrying a cleaning-nozzle, the fan is connected to the filter on its suction side and has an adjustable valve adapted to connect the hose either to the pressure side of the fan or to the intake side of the filter. The cleaner shown embodies a central body 1, motor casing 2, and a removable cylindrical, dust-bag container 4 secured by latches and staples. The unit is supported on skids 7. An interior curved wall 10 is spaced from the body wall to form pockets 11 which extend the length of the body and are open to the atmosphere through openings 12 which face the motor end of the cleaner. A chamber 9 houses a fan 15. The end of the body 1 carries circular flanges 17, 18 for supporting the container 4 and a dust-bag 25 which is spaced from the wall thereof. A central partition has a central opening 13 leading to the fan, and connected by a passage 14 to the container. The flange 18 surrounds an opening leading to a passage 20. The tops of the chambers 11 are open ; the upper ends of the passage 20 and chambers 11 form ports 21, 22 which are controlled by a hoodlike valve 28 connected to the suction-hose 30 and which is rotatably mounted on the casing by a bolt 33 and is secured so that the inlet 29 engages either the port 21 or 22 by a winged nut. Normally the motor draws air through the inlet 21, passage 20, dust bag 25, passage 14 and exhausts through outlet 22. The cleaner can be converted to a blower by reversing the valve 28 so that chamber 32 seats over the exhaust opening 22. The air then passes through openings 12, chambers 11 into the main part of the valve through openings 21, passage 20, bag 25, container 4, and passage 14 through the fan to the discharge 29. The noise is reduced by providing the valve and chambers 11 with sound-deadening lining, and the chambers 11 with lined projections 36 which cause the air to follow a tortuous path.