r, whereupon the hammer may One of the' drawbacks to the use of concrete for the prises a U-shaped frame A, having a short upper hori- be used to drive the nail in the usual manner. The walls of dwelling houses is the fact that the material zontal member and a long lower horizontal member inventor… … and outer facings for the concrete. The inner face NAIL-HOLDING DEVICE FOB HAMMEBS. ATTACHMENT FOB SEWING MACHINES.
Supplement · Signals · Blocks · Concrete · Scientific American · Apparatus · Search wheel · Concrete building · American supplement · Average speed · Sewing machine · Temperature elevation · American july · American supplements · Steam turbine
Internet Archive · Public domain (published before 1931). Free to use for anything.
