Improvement in Combination Locks. (open access)

Improvement in Combination Locks.

Patent for combination latch-locks, "in such manner as that the knob-latch, while performing its special function, will also serve as the lock upon any combination to which it may be adjusted, and the said latch can be operated from either the outside or inside of the door as a latch simply, or as a combination lock, which latter is further secured from the inside by the employment of a safety pin, rendering the bolt in its locked position perfectly secure, while by its partial withdrawal it prevents the possible change of the combination from the outside, and admits of the free use of the latch independent of such combination." (Lines 29-42) Includes instructions and illustrations.
Date: July 1, 1873
Creator: Hall, Phidello W.
System: The Portal to Texas History
Riveting Machine. (open access)

Riveting Machine.

Patent for a new and improved riveting-machine. This design consists "of the upright frame having the cross-head in the upper front part thereof, the vertical driving rods . . . adapted to move in said cross-head, the upright with perforated top and spring-actuated sleeve attached to the frame below the rod, the separable rivet-holder attached to said rod by the arms, the frame, and the sleeve . . . the upright with solid top attached to the frame below the rod, and means, as pivoted levers . . . at the top of the machine, connecting-rods . . . and treadle-levers . . . for actuating the driving-rods" (lines 60-74).
Date: April 1, 1890
Creator: Carl, Reinhold A.
System: The Portal to Texas History