Late 1940s Alex Singer catalogue

For a photo of a similar bike, click here.

1 - Seatpost with invisible clamp. (It is tightened like a stem. A reinforcing sleeve is brazed into the top of the seat tube.)
2 - Singer brakes with clamp on the side and demultiplicator. These push straight in and out. Superlight, but poor modulation.
3 - Chain rest that allows removing the wheel without touching the chain. You shift onto the brazed-on chain rest, then remove
the wing screw on the right side, loosen the wingnut, and the wheel drops out. A cup on the right dropout locates the axle stub, so
the wheel is easy to install, and there are no bending loads on the wingscrew.
4 - Maxi Car hub with large flanges that allow changing the spokes without removing the freewheel. (Drawing 3 shows a standard hub.)
5 - Bottom bracket with annular SKF bearings, pressed right into the bottom bracket shell, can be retrofitted on standard frames.
6 - Nivex shift lever with stop to prevent accidental shifting onto chainrest. There is a pin at the rear of the lever, which goes against the
first stop when you reach the smallest cog. Pulling the lever outward allows you to shift against the second stop (the pin drops into the
hole on the stop), which shifts the chain onto the chainrest. The small lever under the down tube is for the cable-operated front derailleur.
7 - 60 gram cable-operated front derailleur made from steel wire.
8 - Front derailleur with rigid lever. This one weighs 34 grams.
9 - Handlebar bag support made from steel tubing, chrome plated, 175 grams.
10 - Stem made from chrome-plated steel with "invisible" clamp. (Turning the top cap using a rod that goes into a hole tightens the stem.)
Address of the owner is engraved on the top cap.