The drawing is colored in to make it easier

• Figure 1 represents a rear perspective view
• Fig. 2 represents a vertical section
• Fig.3 represents a front elevation, showing the pump-operating mechanism.

• A casing
• A' door
• A² V-Shaped partition
• B lamp (or other calorific device.)
• C two standards,
• D sleeve
• E tube
• E', E² cylindrical receptacles
• F flanged cap
• G gear-wheel
• H Racks
• I piston rods
• J pumpingcylinders
• K long rod/pitman
• L rock-shaft
• M gate

• a, a' entrances
• c, c' trunnions
• j ledge
• k crank arm
• l crank arm

The text and illustrations of US patents published before March 1, 1989 are in the public domain unless the patent text contains a specific notice that portions are copyrighted. See 37 CFR 1.71(d), 37 CFR 1.84(s) The original patent contains no such notice, so its contents are in the public domain. Note: This only applies to images published before March 1, 1989. Patents published after that date are most likely copyrighted, unless in the public domain for another reason, such as {{PD-ineligible}}.