Abstract: The present winch may be a so-called single speed or double speed winch. The rope, which loops around a clamping roller with a looping angle smaller than 360.degree., is operated by at least one power system controlled by a control system through a spring clutch. The control system can close the spring clutch for full power transmission or open the spring clutch completely to interrupt the power train from the power system to the clamping roller. In addition the clutch may be opened partially to control the power transmission for precisely rotating the clamping roller in both rotational directions and stopping the clamping roller in any desired angular position.
Abstract: The present apparatus for starting and fanning a fire, for example in a fireplace, is hand operated and combines in a common handle housing a source of fuel for providing an ignition flame and a power source as well as a fan for blowing air into the fire. The fan is driven by the power source such as a battery. The control for the apparatus is so arranged that the supply of fuel gas and an ignition spark occur substantially simultaneously, whereby the fan is preferably operating on "low". Once the fire has started the fuel gas supply is stopped and the fan may be operated on "high" by an electric motor which may be driven by said battery or through an adapter from a power outlet.
Type:
Grant
Filed:
February 7, 1978
Date of Patent:
February 26, 1980
Assignee:
Mayer & Wonisch Spezialfabrik fuer Mess- und Regelgeraete