Seeburg Scissors Pump Hinges
and Crankshaft Supports

(Photograph courtesy of Earl Hennagir)

Very early scissors pump with metal side hinges and A-frame crankshaft supports. (Seeburg A #107,809, made in 1909 with a Smith & Barnes piano.)

(Photograph courtesy of Art Reblitz)

Close-up of very early side-mounted metal hinge. In some pianos, the fit is so tight that the inside of the case is carved out to make room. (Seeburg A #7,114, made circa 1909 with unknown brand of piano.)

(Photograph courtesy of Art Reblitz)

Common scissors pump with heavy crankshaft supports and adjustable wooden hinge blocks. (Seeburg G #12,312, made in 1920.)

(Photograph courtesy of Art Reblitz)

Close-up of adjustable hinge blocks that were used on most scissors pumps throughout production. The side bracket has a hinge pin fastened to it, which extends through the wooden hinge assembly. The bottom edge of the little pressure block located in the slot in the surrounding hinge block is shaped to fit over the hinge pin. As the machine screw is tightened, it presses the little block down, holding the hinge pin snugly against the hole in the surrounding wooden piece. (Seeburg F #54,160, made in 1913.)