Anesthetic Holding And Dispensing Apparatus (open access)

Anesthetic Holding And Dispensing Apparatus

Patent for an anesthetic holding and dispensing apparatus. Illustration included.
Date: September 25, 1906
Creator: Maxfield, James R. & Maupin, Seth B.
System: The Portal to Texas History
Lap Ring. (open access)

Lap Ring.

Patent for a new and improved lap ring (or link). This design utilizes a hinge to allow for half of the ring to part from the other half, which creates a larger opening and allows for connection with a wider range of things (e.g., larger clevises).
Date: October 25, 1881
Creator: Matthews, James Levi
System: The Portal to Texas History
Hoisting Device (open access)

Hoisting Device

Patent for a hoisting device. Illustration included.
Date: October 25, 1910
Creator: Sims, James L.
System: The Portal to Texas History
Safety-Pin. (open access)

Safety-Pin.

Patent for an improved fastening device which incorporates a sliding shield.
Date: August 25, 1914
Creator: Pyron, John M.
System: The Portal to Texas History