Atlas of Small Discoveries · Kuyavia · sugar railways V3 · Sonnet

A beet waits
for a wagon.

Three model loading points, two locomotives, one day from 06 to 22. Move one departure and see which beets are left in the clamp — and why.

Awaiting for a wagon70 tof 70 t—
Bwaiting for a wagon90 tof 90 t—
Cwaiting for a wagon100 tof 100 t—
solid mark: waiting · dashed: already taken · 1 mark = 5 t, one scale for A, B and C. Schematic of the model, not a measurement.
Baseline plan

Hour of the model day; the vertical line shows the departure of the selected run. Black band: the run is travelling. Hatched band underneath: a run that will not depart.

Locomotive I
Locomotive II

    Teaching model: round-trip times, harvests and capacity are assumptions, not data from 1921 and not a timetable. Rules and limits.

    08:00

    1 wagon = 5 t capacity

    0 tof beets waiting for a wagon at the end of the day

    Why it is left over

      Where a full round trip fits

        This page also works without scripts, but the interactive desk needs JavaScript. Below is the result of the ready-made “Calm rotation” plan from the model: two locomotives, six runs, a 06:00–22:00 day. Harvests assumed in the model: A 70 t, B 90 t, C 100 t; one wagon is 5 t.

        Calm rotation (teaching model)
        RunLocomotiveLoading pointDeparture–returnWagonsLoad
        K1IA06:00–07:30840 t
        K2IIC06:00–10:001050 t
        K3IB08:00–10:30945 t
        K4IIC10:30–14:301050 t
        K5IA11:00–12:30630 t
        K6IB13:00–15:30945 t

        Result: nothing is left in the clamps and 260 t reaches the sugar factory. If K3 left at 07:00, Locomotive I would not yet be back from K1 (return 07:30), the run would not depart and 45 t would be left waiting at loading point B. In the “Jam” plan loading point C has no run at all (100 t waiting), and in the “Too tight” plan 140 t is waiting.

        Plan as a table

        The same as the bands show

        The table holds the full record of the plan and works without dragging. A new run gets the first free window of the chosen locomotive — afterwards you can move it with the slider or the buttons.

        Plan for the day, runs in order of departure (teaching model)
        RunLocomotiveLoading pointDepartureReturnWagonsTakesStatusActions

        The plan table is shown above, in the section with the ready-made result. Adding and moving runs needs JavaScript.

        Model rules

        How we calculate this and what we do not know

        All the figures in this section are teaching assumptions. They do not come from factory timetables or carriage tables.

        1. The model day: 06:00–22:00 (16 h). Departures every 30 minutes, from 06:00 to 21:30. The model does not run past midnight: a run that would return after 22:00 does not depart.
        2. A round trip is the time from departure from the sugar factory to return to its station: A 1 h 30 min, B 2 h 30 min, C 4 h (by default, changeable below). Loading is included in this time.
        3. One locomotive, one run at a time. When times clash, the run with the earlier departure goes, and the later one “does not depart” and is shown separately. Departing exactly at the time of return is allowed.
        4. The harvest is the quantity of beets ready for collection from 06:00: A 70 t, B 90 t, C 100 t. Nothing more arrives during the day. A run takes as much as the train holds (a wagon holds 5 t, 1–12 wagons) or as much as is still there — the rest of its capacity travels empty.
        5. The sugar factory’s quota of 240 t per day is an assumption carried over from V2, not data from the factory.
        6. What the model does not know: single-track passing loops, the weather and the state of access roads, breakdowns, crew changes, loading times at the points, the arrival of beets during the day, real line capacities.
        Schematic of the model: the sugar factory and three loading points Three branches lead from the sugar factory on the left to loading points A, B and C. The length of a branch corresponds to the assumed round-trip time, with a tick every 30 minutes. This is a schematic of the model, not a map.
        A schematic, not a map: the black shape is the sugar factory, the circles are the model loading points. Branch length ∝ round-trip time, one tick = 30 min. The model author’s own drawing; the shape does not reproduce real tracks.
        Change the model assumptions (round trip and harvest per loading point)
        Loading point A
        90 min
        70 t
        Loading point B
        150 min
        90 t
        Loading point C
        240 min
        100 t

        A longer round trip lengthens the run’s band and the branch on the schematic; the harvest changes the height of the stack. Runs that no longer fit in the day change their status to “will not depart”.

        What disappeared from version V2, and why

        Four counters, a progress bar and three loading-point cards
        Replaced by a single result (“waiting for a wagon”) and a reason beside each stack. A bare “collision!” did not say which run or why.
        A collision that cancelled both runs
        Replaced by priority for the earlier departure: one locomotive never makes two overlapping runs, and a run without a locomotive is shown as “will not depart”.
        Sliders for wagon capacity and wagon fleet size
        Dropped. With two locomotives and at most 12 wagons per train, no more than 24 wagons are ever on the move at once, so the fleet limit of 24 never took effect; the 5 t capacity is a fixed assumption.
        Saving the plan in browser storage
        Dropped: the plan is short, and the ready-made scenarios and the undo button are enough. The page saves nothing and does not read the old V2 key.
        All parameters open at once
        Moved to a second layer (this collapsible panel). The first decision is a single departure.
        A photograph embedded from an external server
        Removed from the rendering because the page is meant to work offline. A clickable link remains in the sources.
        Historical background

        Brześć Kujawski: what the sources indicate

        The dates and descriptions below come from links kept from V2. They were not opened again in this version, which is why they are marked “to be verified”. The model at the top of the page does not reproduce these dates.

        • 1894

          The first campaign of the sugar factory in Brześć Kujawski; the factory was built on the land of the Falborz estate, next to the town. [2]to be verified

        • 1908–10

          The decision to build a factory railway to Włocławek was taken in 1908; the municipality gives 1910 as the completion of construction. [2]to be verified

        • 1921

          The sugar factory built lines to Osięciny and Kościelna Wieś, as part of expanding its raw-material hinterland. [2]to be verified No surviving journey times or harvest volumes are given here, so loading points A, B and C are purely model constructs.

        • 1968, 1988

          According to the municipal history, dismantling of the lines began in 1968, and from 1988 beets from the collection points were carried only by lorry. [2]to be verified

        • Context

          Ariel Ciechański (Stacja Muzeum) links the autumn campaign with difficult conditions on unpaved roads; the railway helped to deliver beets from the plantations to the factory. [1]to be verified

        • Kruszwica

          A different factory, a different example: the museum in Sochaczew describes locomotive CK 3, one of two engines ordered by the Kruszwica sugar factory in 1924, with an added tender that increased its supply of coal and water. [3]to be verified This illustrates the limits of range; it is not data about Brześć.

        Sources

        Where this information comes from

        The author of this version did not open any of the links below and does not regard them as verified. They are clickable links; the page loads no resources from them.

        1. [1] Stacja Muzeum, “Koleje polowe” [Field railways], 2019 — a text by Ariel Ciechański on sugar railways and transport conditions. In Polish.
        2. [2] Brześć Kujawski municipality: outline of the sugar factory’s history — the dates in the list above. In Polish.
        3. [3] Narrow-Gauge Railway Museum: locomotive CK 3 — the history of the engine and its tender. In Polish.
        4. [4] Photograph of a Henschel locomotive in Sochaczew (Travelarz, Wikimedia Commons), licence given in V2: CC BY-SA 3.0 PL. The photograph shows a museum locomotive, not the line in Brześć; it is not embedded in this version. The licence and description should be checked before any use.

        Missing: a documented photograph of beets being loaded on the line in Brześć Kujawski, and the factory’s times and quantities. This is why the graphic timetable above is entirely a model.