Manufacturers Index - Pearl Square Auger Manufacturing Co.
Pearl Square Auger Manufacturing Co.
Rochester, NH; New York, NY, U.S.A.
Manufacturer Class:
Wood Working Machinery
This page contains information on patents issued to this manufacturer.
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505,844
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Oct. 03, 1893
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Auger
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Azariah Yeldon Pearl |
West Lebanon, ME |
An example is reported, labeled "MADE BY THE PEARL SQUARE AUGER MFG CO. NEW YORK. USA. PAT OCT 3 '93, AUG 11 '96, JUNE 18 '98." These dates correspond, respectively, to patents 505,844, 606,575, and 788,941. |
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565,500
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Aug. 11, 1896
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Auger
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Azariah Yeldon Pearl |
Rochester, NH |
The second in a series of patents where the inventor created and refined his square-hole auger. An example is labeled "MADE BY THE PEARL SQUARE AUGER MFG CO. NEW YORK. USA. PAT OCT 3 '93, AUG 11 '96, JUNE 18 '98." These dates correspond, respectively, to patents 505,844, 606,575, and 788,941, which implies that the present patent design was short-lived. The present patent's improvements are aimed at lubricating the boring-head to prevent overheating, and consists of channels where oil can be conveyed down the shaft to the boring-head. A clutch is used to disengage the cutters when reversing out of the hole. Judging by the subsequent patent, the clutch mechanism was too complex and was designed out altogether. |
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606,575
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Jun. 28, 1898
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Auger
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Azariah Yeldon Pearl |
Lebanon, ME |
An example is reported, labeled "MADE BY THE PEARL SQUARE AUGER MFG CO. NEW YORK. USA. PAT OCT 3 '93, AUG 11 '96, JUNE 18 '98." These dates correspond, respectively, to patents, 505,844, 606,575, and 788,941. The present invention provides improvements to the spindle-support, to the guide-frame, and avoids the need for the clutch required by the design of patent 565,500. |
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88,065
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Jun. 28, 1904
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Auger
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Azariah Yeldon Pearl |
West Lebanon, ME |
See patent 505,844 for more information on the inventor and his company. |
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788,941
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May. 02, 1905
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Auger
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Azariah Yeldon Pearl |
West Lebanon, ME |
An example is reported, labeled "MADE BY THE PEARL SQUARE AUGER MFG CO. NEW YORK. USA. PAT OCT 3 '93, AUG 11 '96, JUNE 18 '98." These dates correspond, respectively, to patents, 505,844, 606,575, and 788,941. The present invention provides improved chip removal: a tube rises vertically from the guide-block to an orifice near the top of the square frame. The drive shank passes through the center of that tube. |
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845,191
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Feb. 26, 1907
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Boring-machine
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Azariah Yeldon Pearl |
West Lebanon, ME |
The inventor's primary business was in manufacturing an auger bit for cutting square holes; see patent 505,844 among others. He also manufactured hand-powered boring machines to drive his augers. This 1907 patent post-dates his auger patents and provides a more completely thought out machine to drive one of his augers. "This invention has for its object to provide means for holding the outer casing of the tool against rotation, means for rotating the spindle of the tool, means for feeding a lubricant to the tool, means for controlling the feed of the lubricant, means for adjusting the position of the outer casing of the tool to cause it to cut at various angles, means for advancing the tool without destroying its support or angular adjustment, and means for driving out the tool." |
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