This article relies largely or entirely on a single source. (August 2015)
|Born||October 23, 1762|
|Died||April 17, 1843 (aged 80)|
|Significant advance||Heated-surface carburetor|
He was the second of seven children born to Israel Morey (1735–1809) and Martha Palmer (1733–1810) and was born in Hebron, Connecticut,  but moved to Orford, New Hampshire, with his family in 1768. He later moved across the Connecticut River to Fairlee, Vermont, but was buried in Orford in 1843. Lake Morey in Vermont is named in his honor.[ citation needed]
Morey's first patent, in 1793,  was for a steam-powered spit, but he had grander plans. Morey realized that steam could be a power source in the 1780s, and he probably appreciated a steamboat’s potential from work on his father’s ferry and the locks he designed along the Connecticut river. In the early 1790s he fitted  a paddle wheel and steam engine to a small boat and powered it up and down the Connecticut River. Legend has it, this was done on a Sunday morning, when the town was at church, to avoid ridicule if he failed.[ citation needed]
The most important aspect of this craft was the paddle wheel. It was an old idea – supposedly dating to antiquities – and previously tried with a steam engine. Jonathan Hulls of England used a rear-mounted paddle wheel in 1737  but an inefficient method of turning the steam engine’s reciprocating motion into the circular motion hobbled it. In 1789, Nathan Reed of Massachusetts experimented with a paddle wheel, and considered patenting it, but eventually patented a different method instead. The American John Fitch experimented with side-mounted paddle wheels, but in 1791 used and patented oars instead.  Morey's may have been the first  successful use of a steam power paddle wheel, which was the best method of propulsion  until the propeller, invented by Fitch,  was perfected.
Morey’s first boat was little more than a proof of concept, so he built another in New York. In a letter to New York legislator William Duer, Morey describes how over the next three summers he traveled down to New York, and the following summer to Hartford, Connecticut to improve and exhibit his boat. Finally, in 1797 he went to Bordentown, New Jersey (a stop on Fitch's failed Philadelphia-to-Trenton passenger service), because it was “sickly in New York”, and built a boat employing two side-mounted paddle wheels. At this point, Morey considered his boat ready for commercial use and sought financial backers. For reasons that are unclear, his backing fell through because of “a series of misfortunes”.  This is likely the end of Morey's direct work with steamboats – although there are many tales of a later fourth steamboat– but not the end of his steam engine patents. In addition to one received in 1795 for improvements he made working on the steam engine in boat, he received patents for other applications and improvements in 1799, 1800, and 1803.[ citation needed]
Despite Morey's success in building a working steamboat, credit for the first successful steamboat line goes to Robert Fulton and his financier, Chancellor Robert Livingston.  This was a cause for contention, as Morey claims that they took some of his ideas. His account, which seems more reasonable than later, derived accounts, is laid out in his letter to Duer and is as follows. The summer after the one Morey spent at Hartford, he returned to New York and gave Livingston a ride in his boat (perhaps at the advice of Benjamin Silliman — publisher of Morey's papers — who knew Livingston to be a supporter of the arts). He was impressed and offered Morey a “considerable sum” if he could improve the boat's speed to 8 miles per hour. He also offered $7,000 for the rights to use his current work around New York but Morey declined the offer.[ citation needed] However, he continued working towards Livingston’s speed goal. Morey had conversations with Fulton and Livingston, and Livingston even traveled to Orford to see him (although Morey doesn’t say when or what was discussed). Later, Morey reportedly was aboard Fulton's boat and expressed to Fulton his displeasure that his ideas had netted Fulton much but nothing for himself.[ citation needed]
In 1815, Morey patented a “revolving” steam engine,  described at length in the American Journal of Science in 1819 by John Sullivan, its purchaser. With the exception of one harsh initial review predicting that it would barely work – which was rebuffed by Sullivan, it was apparently well received and Sullivan's description appeared in the Edinburgh Philosophical Journal along with an introduction praising American steam engine and boat refinements. Instead of a stationary cylinder driving a rod that turns a wheel through a second linkage, it seems that the cylinder is allowed to pivot as the rod moves, which then turns a crank. The cylinder's pivot doubles as a valve that controls the direction and flow of steam according to its position. The claimed advantages of this configuration are lightweight, high-speed operation, durable construction, and low cost. This engine met with some commercial success; recorded applications include tugboats, a glass factory, and a sawmill in the Boston naval yard.  One tugboat even sailed to South Carolina, where its owner was pleased by its performance. Morey received one more steam patent in 1817 but his interest had been captured by experiments with flammable vapors, which had started some time before.
In an 1834 letter to Silliman, Morey wrote: “It is now more than twenty years since I have been in the constant, I may say daily practice of making experiments on the decomposition of water, by mixing with its vapor that of spirits of turpentine, and a great portion of atmospheric air.”  This would seem to understate the scope of some research that led to such diverse discoveries as the liquid fueled internal combustion engine, a method for carbonating water, and odd bubbles formed by molten resin. The last two appeared in journals in England and Germany, respectively.  Morey noted differences in flames near knots, perhaps rich in sap, or in wet wood. Eventually he experimented with anything he could find: “ tar, rosin, rough turpentine, or the spirit, or alcohol, or any kind of oil, fat, or tallow; mineral coal, pitch-pine wood, and the knots, birch bark, pumpkin, sun-flower, flax, and other seeds; as well as many other substances.”[ citation needed]
His experiments are described at length over several articles in the American Journal of Science and Arts.  They are light on theory, and Silliman comments that “[Morey's] results are often very valuable, and perhaps, in some cases, not the less so, for having been sought without the direction of preconceived, theoretical views.”  This is mostly true; theory enters into these articles mostly for possible explanations. However, in 1834, 15 years after his first publication on the subject, he proposes a theory of combustion that has electricity  as its basic force. Hints of this theory may be visible in his first paper, but his early experiments were not guided by it. 
His first practical application was to heat water for his revolving engine. He observed that passing steam over burning coal or tar caused the flames to burn brighter and without smoke, and he theorized that the steam was decomposed in this process. Word of these experiments reached the eminent French chemist Gay-Lussac, and he commented on them in Annales de Chimie et de Physique in 1819.  He contended that the temperature was insufficient to cause decomposition. Instead, the steam freed more flammable vapors in the fuel causing the flame's change. Morey was correct. He produced what is now known as town gas.  The oxygen from the water combines with carbon from the fuel to form carbon monoxide and the hydrogen forms a diatomic molecule. Both later burn to form water and carbon dioxide. Morey was not the first to use water-gas for lighting, and his devices, including the patented 1818 American Water Burner, simply used the gas immediately instead of piping it to be burnt elsewhere, done as early as 1792 in England.  Morey apparently did not know of this advance or at least did not recognize it as the same process. Strangely, in 1819 J. F. Dana of Dartmouth and Harvard proposed attaching steam boilers to street lamps to take advantage of Morey's discovery, but water-gas was already being piped to some London street lamps from a central source in 1812.  Still, Morey's device did produce more light, and there is evidence that it resulted in more efficient combustion. 
During his experiments, Morey discovered that the vapor of turpentine, when mixed with air, was explosive. He recognized its potential, developed an engine, and wrote an unpublished description in 1824, which he modified in 1825 and 1826. He finally published and patented the idea later in that year.  The revisions between the drafts are small, and deal mostly with reworking of the engine’s valves.
The engine has much in common with modern ones. It has two cylinders,  a carburetor,  a familiar arrangement of valves and cams.  However, unlike modern engines, and unlike the earlier 1807 François Isaac de Rivaz engine, the explosion did not directly provide power. Instead, the explosion expelled air from the cylinder through a one-way valve. The cylinder was cooled by a water jacket and water injected into the combustion chamber after it fired. The cooling gasses caused a vacuum and atmospheric pressure drove the piston.  Morey did mention trying direct action, and elaborated on it in other descriptions.  However, his method was more complicated and possibly less efficient because it used more of the engine’s stroke to draw in fuel.[ citation needed]
Morey demonstrated his engine in New York and Philadelphia and there are eyewitness reports for both. In Philadelphia, he demonstrated it powering a boat and a wagon.  Unfortunately, when he decided to demonstrate the car on the street, he fell off after starting the engine and the vehicle powered across Market Street into a ditch.  This was the second car ride in the world, and the first in the United States.  Despite these mostly successful demonstrations, Morey could not find a buyer, and became frustrated. A letter from Reverend Dana of Orford written in October 1829 tells of Morey’s trip to Baltimore, “I am told, the Capt. Is determined to make one more vigorous effort, to sell his patent right for some of his modern inventions [he later singles out the vapor engine], and if he does not now succeed, he will give the matter up, and return to Orford, to spend his days in quiet.”  Morey did not find a buyer,  and as he was then in his late 60s, it made sense to stop traveling up and down the east coast and call it quits.
While the engine was state of the art,  it was not novel in many respects. Morey seemed aware of contemporary internal combustion work – Hardenberg, who wrote a book on Morey’s engine, adeptly noted that in his 1825 draft Morey “stated that he named his invention ‘vapor engine, to distinguish it from the… gas engine.’”  However, Hardenberg concludes that Morey could only have known of three[ clarification needed] engines similar to his. He never mentioned them, and Hardenberg concludes that they did not influence Morey.  His internal combustion engine is the first  documented in the United States, and his use of liquid fuel and a heated surface carburetor was world's first.  Another interesting feature was the wire mesh used to prevent the combustion from reaching the carburetor. This feature was reinvented and patented again in 1872 because the patent office had lost Morey’s patent in the 1836 patent office fire.  The lack of interest in his vapor engine is unfortunate, because the vapor engine was his most  farsighted invention. Morey notes in his unpublished 1824 draft that:
|“||Is there not some reason to expect that the discovery will greatly change the commercial and personal intercourse of the country. There is good reason I trust to conclude that transportation on good roads or railroad may be done much cheaper as well as quicker than by locks and canals, besides having the great advantage of being done, much of it, in the winter a time much the most convenient of the farmer. In their personal intercourse, if it should be generally thought most prudent to continue their intercourse on the earth’s surface, yet I think there will be little use of horses for that purpose.||”|
|— Samuel Morey, unpublished|
He mentions "the earth's surface" because elsewhere he proposed using the engine to propel balloons.  Now that the internal combustion engine’s potential has been realized, people often focus on his engine. The first push to popularize his work was done by Charles Duryea, a fellow inventor who produced the first gasoline engine in America around 1890.  He funded the creation of two working replicas of Morey's Engine — one is in the possession of the Smithsonian and the other is owned by Dean Kamen — and posited that Morey's engine was a direct precursor of the modern engine, a position with which others disagree.  Recently, Morey's work has received renewed attention by people other than locals and engineers, in particular American comedian Jay Leno, who is an avid car collector.
- "On a new revolving steam engine", Edinburgh Philosophical Journal 1 (1819): pp. 348-352 (also in American Journal of Science 1818)
- "On heat and light", American Journal of Science and Arts 2 (1820): pp. 118-132.
- "On artificial mineral waters, with some remarks on artificial light", American Journal of Science and Arts 3 (1821): pp. 94-102.
- "Remarks on the patent Water-Burner". American Journal of Science and Arts 7 (1824): pp. 141-145.
- "An account of a new explosive engine, generating a power that may be substituted for that of the steam engine". American Journal of Science and Arts 11 (1826): pp. 104-110.
- "Observations on combustion and the powers concerned in that process", American Journal of Science and Arts 25 (1834): pp. 146-151.
- X51 Turning A Spit
- X246 New And Invented Water Engine
- X306 Force From Water With Assist Of Steam
- X2,339 Steam Engine
- X2,752 Tide And Current Water Wheel For Driving Mills Or Machinery With Or Without A Dam
- X2,880 Method Of Burning Water Called The American Water Burner
- X3,060 Shooting With Steam And Gas
- X4,378 Gas Or Vapor Engine
- X7,826 Decomposing And Recomposing Water In Combo With Spirits Of Turpentine
- 1877 U. S. Patent Office fire
- 1836 U.S. Patent Office fire
- History of the internal combustion engine
- Horst O.Hardenberg, "The Middle Ages of the I.C. Engine" (Warrendale, 1999) pages 115-132.
This article relies largely or entirely on a single source. (May 2011)
- Maurer, Leon. "The Unsolved Mystery of Samuel Morey". Retrieved 7 May 2011.