Scroll or pinch to deep-zoom · powered by IIIF

RPO Catcher Arm patent model

Numerous patents were filed covering 'new and useful' improvements for non-stop pick-up and delivery of mail by a Railway Post Office (RPO). This is an example of the type of models that accompanied 1870s and earlier patent applications. Models illustrated the features depicted in a drawing and demonstrated the operation described in the application narrative.

Date

1875

Type

Transportation Equipment & Models

Medium

metal (brass); wood

Department

NPM

Institution

National Postal Museum

Object number

npm_0.234863.111