Manufacturers Index - Kendrick & Davis
Kendrick & Davis
Lebanon, NH, U.S.A.
Company Website: http://www.magmotor.com/
Manufacturer Class:
Steam and Gas Engines
This page contains information on patents issued to this manufacturer.
Submitting Patent Information
If you find a patent number or patent date by this manufacturer that is not on this
list, please contact the Site Historian.
Key to Links for Patent Information
USPTO = U.S. Patent Office .
Images of the actual patent can be viewed on the U.S. Patent Office web site but
a special TIFF viewer must be installed with your browser in order properly work.
More information on how to configure your computer to view these patents can be
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for Patent Images.
DATAMP = Directory of American Tool And
Machinery Patents . A sister site to VintageMachinery.org with information
on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
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154,738
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Sep. 01, 1874
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Improvement in Watch Keys
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Frank E. Williams |
Duluth, MN |
Patent relates to the slots in the square tube of the key to keep dust and lint from building up around the watch stem cases.
Example is a bench key marked 'Pat. Sept. 1, 1874 |
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Improvement in Watch Keys
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Henry E. Cook |
Duluth, MN |
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394,507
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Dec. 11, 1888
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Mainspring Winder
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Albert F. Robbins |
Orange, MA |
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627,670
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Jun. 27, 1899
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Watch Barrel Contractor
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Charles H. Jenkins |
Lebanon, NH |
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627,669
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Jun. 27, 1899
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Watchmaker's Tool
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Charles H. Jenkins |
Newark, Essex County, NJ |
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650,395
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May. 29, 1900
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Watchmaker's hand-vise
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Charles H. Jenkins |
Lebanon, NH |
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738,723
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Sep. 08, 1903
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Watchmaker's Gauge
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Charles H. Jenkins |
Lebanon, NH |
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772,325
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Oct. 11, 1904
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Watch Roller and Hand Remover
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Ole O. Aune |
Waltham, MA |
Sample marked 'K&D, Pat. Oct.11,1904. Also see Pat.734211 |
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837,577
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Dec. 04, 1906
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Watch Roller Remover
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William N. Loud |
Quincy, Norfolk County, MA |
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916,197
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Mar. 23, 1909
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Mainspring Winder
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Albert F. Robbins |
Waltham, MA |
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922,080
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May. 18, 1909
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Micrometer Screw Driver
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George W. Bowers |
Somerville, CT |
This Patent relates to screw drivers and the ability to measure the amount of rotation of the screw. This is is especially important in adjusting the timing screws,( or mean time screws) on a watch balance wheel. The screws regulate or adjust the the arc or balance of the wheel.
Sold as K&D #423 Micrometer screwdriver, a small micrometer on the blade keeps track of micro rotations on the blade. Sample marked "K&D Patented May 18, 09" |
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966,529
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Aug. 09, 1910
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Multiple bench-key
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Frank R. Cunningham |
Medford, MA |
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986,695
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Mar. 14, 1911
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Mainspring Winder
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Frank R. Cunningham |
Medford, Middlesex County, MA |
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1,008,018
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Nov. 07, 1911
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Tweezers
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Frank R. Cunningham |
Medford, Middlesex County, MA |
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1,009,385
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Nov. 21, 1911
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Headlight Adjuster
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Frank R. Cunningham |
Medford, Middlesex County, MA |
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