Abstract: A pedal powered gear transmission mechanism applicable to velocipedes, exercise machines or winches is disclosed. A system of non-circular gears or a combination of non-circular and circular gears between pedal cranks and a chain driving sprocket causes the pedal cranks to retard and advance cyclically relative to the chain sprocket by varying the instantaneous gear ratio between the pedal cranks and chain sprocket. The resulting change in mechanical advantage partially compensates for the inherent disadvantage at and near dead center pedal positions. A more uniform application of torque is developed.

Abstract: A label structure wherein indicia marked therein by application of localized pressure are relatively permanent and are not generally altered by sunlight, water, temperature changes, mechanical handling, chemicals which do not attack the label structure, etc. The label structure comprises a panel member and fastening means with the panel member characteristically being formed by at least two flattened members, one of which is an oriented thermoplastic sheet or film.