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Hog oiler

Hog oiler is a science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Hog oiler rather than just read about it. In short: A hog oiler was a mechanical device employed on farms to be used by hogs to provide relief from insects and offer skin protection. It consisted of a reservoir to hold oil, and a means to distribute the oil onto the hog, often via grooved wheels or cylinders.

Hog oiler — main illustration
Hog oiler — illustration

Key takeaways

  • Hog oiler belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect Hog oiler to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of Hog oiler from memory before moving on to harder problems.

Reference excerpt

A hog oiler was a mechanical device employed on farms to be used by hogs to provide relief from insects and offer skin protection. It consisted of a reservoir to hold oil, and a means to distribute the oil onto the hog, often via grooved wheels or cylinders. Hogs seeking relief would rub up against a wheel (or cylinder) causing it to rotate and dispense oil onto their bodies.

History In the late 1800s and early 1900s hog lice and hog cholera could prove devastating to livestock producers and the hog oiler was seen as one way to combat the problem. The first known patent for a hog oiler device was issued in 1902 by the U.S. Patent Office, however the era of innovation for this device was mainly the years 1913–1923. According to Goodbye Mr. Louse, a book by Robert Rauhauser, there may have been as many as 157 different patented models of hog oilers, but collectors today estimate there could have been as many as 600 manufacturers, most going unpatented. Prices for hog oilers would range anywhere from four dollars for a small model to twelve dollars and even higher for larger ones with more features. The same companies that manufactured the oilers would often sell special medicated oil to be used with the device, offering further protection. Many farmers however simply chose to use recycled oil or made their own cheaper versions. The U.S. government, while being willing to issue patents, suggested that the oilers might be less than effective, according to collector Bob Coates in Farm Collector magazine. "They (the government) recommended mopping or dipping (the hogs) instead," said Coats. Companies throughout the Midwestern U.S., such as Lisle Manufacturing of Clarinda, Iowa, offered farmers and hog producers a variety of styles and sizes including fence-mounted, stand-alone, walk-through and ratchet-governed. However, the most common were double-wheel models known as Colubians and Sipes. Often made of cast iron, the early hog oilers could be quite heavy, with some models weighing as much as 150 pounds. Later models from the 1920s onward would mostly be constructed of cheaper, lighter steel and sheet metal. Other known manufacturers of hog oilers included the National Oiler Company of Richmond, Indiana, Rowe Manufacturing, Galesburg, Illinois, and Starbuck Manufacturing, Illinois Implement Company, and O.H.C. Manufacturing, all of Peoria, Illinois.

Collectibles World War II led to a small but growing collectors' market for hog oilers today. The cast iron models are considered the most desirable antiques since many originals were gathered up in war scrap iron drives and destroyed. Hog oiler collectors come from all locations and ages, some as young as 11 years old. Generally the "hog belt" of the upper Midwest provides the majority of hog oiler finds today—states such as Iowa, Illinois, Indiana, Nebraska and parts of Kansas and Missouri. Prices paid by collectors can vary widely, based on size, functions, and condition of the machine. Smaller hog oilers can be purchased for sometimes thirty dollars or less, while the rarest models can have asking prices in the many thousands of dollars. A small cast iron "wheel" type hog oiler that appeared nearly unused was featured on the History Channel program Pawn Stars on August 8, 2011. It sold for $100.

References

External links U.S. patent 1,057,588 Patent issued to E.J. Smith in 1913 for a twin wheel hog oiler. U.S. patent 1,173,201 Patent issued to F.R. McDermond in 1916 for a "watermelon type" hog oiler. U.S. patent 1,256,357 Patent issued to Albert A. Nasser in 1918 for an overhead tank reservoir hog oiler.\ U.S. patent 1,289,852 Patent issued to William J. Marsh of Dexter, Iowa in 1918 for a Dexter Hog Oiler.

Illustrations

Hog oiler: Hog oiler patent image U.S. patent 1,241,023
Hog oiler patent image U.S. patent 1,241,023
Hog oiler: Antique "watermelon type" hog oiler.
Antique "watermelon type" hog oiler.

Worked examples

Example 1 — a first encounter with Hog oiler

Start with the simplest possible case. Write down what Hog oiler claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Hog oiler before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Hog oiler ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Hog oiler

In research
Hog oiler appears in science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry
Engineering practice reuses Hog oiler in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom
Hog oiler is common in secondary-school and first-year university syllabi. It links to neighbouring topics Agricultural machinery, Pigs, so understanding it makes those chapters shorter.
In everyday life
Look for Hog oiler outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Hog oiler in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what Hog oiler means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain Hog oiler out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Hog oiler in simple terms?

A hog oiler was a mechanical device employed on farms to be used by hogs to provide relief from insects and offer skin protection. It consisted of a reservoir to hold oil, and a means to distribute the oil onto the hog, often via grooved wheels or cylinders.

Why does Hog oiler matter?

Because it connects several science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Hog oiler?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Hog oiler.

Tags

  • Agricultural machinery
  • Pigs

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