Karrick Dossier Figures: Captioned Schematics and Uncaptioned Images

The source archive Karrick dossier carries several images, and they are not documented to the same degree. Three of them — karrick1.gif, karrick2.gif and karrick3.gif — appear in the karric.htm capture as bare image references with no captions and no accompanying quantitative content. A fourth, jacarfig.gif, belongs to the Jacobsen/Carter thesis and is captioned and described in its source. A fifth, kltccogen.jpg, has been visually inspected and is a captioned design montage. This page keeps those categories distinct.

The three uncaptioned files

The available material establishes only that three image files are referenced in the karric.htm capture, in this order:

• karrick1.gif
• karrick2.gif
• karrick3.gif

The capture supplies no captions, no scale bars, no labelled axes and no measured values for any of the three. Their visual content is not described in the retrieved material, and it is not inferred here from the filenames. The source text supplies no visual observation for these three files, so this page says only that they are referenced and uncaptioned.

The earlier ingestion of the dossier references the same three files, and they function as illustration rather than as data. An earlier version of this page additionally recorded a tentative role for each file — a portrait or process illustration for karrick1.gif, a diagram or photograph of carbonization apparatus for karrick2.gif, and a further illustration such as a product or plant view for karrick3.gif. Those role descriptions were not captions and were not derived from the retrieved material; the capture itself supplies none, and they have been removed here.

What they do and do not establish

The three files are illustrative. They carry no scale bars, no labelled axes, no measured values and no captions with quantitative content. They cannot be used to support any claim about yield, energy balance or process superiority. Their value is documentary: they show what the dossier's compiler chose to present alongside the text.

For the technical account of the process the images illustrate, see karrick-process and Low-Temperature Carbonization (LTC).

A distinct, captioned figure: jacarfig.gif

The Jacobsen/Carter thesis capture (1jacar.htm) references a separate figure, jacarfig.gif, which the thesis text explicitly identifies as Figure 2, a schematic plant layout of the test plant. The thesis states that a small distilling plant was constructed for the investigation and that Figures 2 and 3 are, respectively, a schematic plant layout and a photograph of the test setup. The Figure 2 caption names the plant's components: a gas-fired superheater (a), a coal retort (b), condensers (c), (d) and (e), a combustion chamber (f), a control valve (g), a meter (h), a manometer (i), nozzles (j), air and gas mixing tubes (k), a cylindrical column (l), and a heat-insulating outer wall (m).

That figure is captioned and described in its source and is treated separately at Karrick’s 1933 Utah test plant: reading the process schematic. It should not be conflated with the three uncaptioned karrick*.gif files.

A visually inspected montage: kltccogen.jpg

kltccogen.jpg is a montage showing a low-temperature-carbonization apparatus connected to a bank of parallel vertical elements and a serpentine passage. Its caption describes cogeneration using steam for electricity and an oil-to-coal process. Section A-A and B-B details appear beside the vessel. The observation records what is shown and how it relates to the accompanying text; it does not claim that the figure measures anything. Other dossier figures include historical apparatus photographs and tables, which should be distinguished from this design schematic.

Context from the survey literature

The Ketchum survey capture, which is part of the same dossier family, records that the Karrick process had no commercial plant in operation and that its economic feasibility was "not clearly known." That survey also lists other low-temperature carbonization processes as separate entries — including the NFC (National Fuels Corporation) process associated with G. A. Berry and the Lurgi process — and those should not be conflated with the Karrick process or with the figures discussed here. This context bears on the assessment of the process, not on the images themselves.