Complex sentence: Between 1897 and 1899, the locomotives were constructed with a short overhang at the front, sandboxes combined with the front splashers, injectors, lever reverser and conical, as opposed to flat, smokebox doors on numbers 252-256.
Split into simpler sentences: Between 1897 and 1899, the locomotives were constructed with a short overhang at the front, and sandboxes combined with the front splashers. Injectors and a lever-type reverser were also added, whilst a conical, as opposed to flat, smokebox door was implemented on numbers 252-256.