Manufacturers Index - Langdon-Davies Electric Motor Co., Ltd.
Langdon-Davies Electric Motor Co., Ltd.
London, England, U.K.
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
found at TIFF image Viewers
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.
|
1,360
|
Nov. 16, 1889
|
Appareil perfectionné pour la production rythmique de courants électriques
|
Charles Langdon-Davies |
, England |
This is a Swiss patent. |
|
189,419,364
|
Oct. 11, 1895
|
Improvements in Electro-motors and like Electro-magnetic Apparatus
|
Walter Langdon-Davies |
, England |
|
|
|
|
Improvements in Electro-motors and like Electro-magnetic Apparatus
|
Charles Conners |
, England |
|
|
54,528
|
Jan. 07, 1897
|
Electro-Motor and Transformer
|
Walter Langdon-Davies |
, England |
|
|
189,707,772
|
Feb. 26, 1898
|
Improvements in Alternating Current Motors
|
Walter Langdon-Davies |
, England |
|
|
189,716,788
|
Jul. 02, 1898
|
Improvements in Alternating Current Motors
|
Walter Langdon-Davies |
, England |
|
|
189,824,418
|
Oct. 07, 1899
|
Improvements in Alternating Current Motors
|
Walter Langdon-Davies |
, England |
|
|
643,066
|
Feb. 06, 1900
|
Alternating Current Motor
|
Walter Langdon-Davies |
, England |
|
|
190,007,373
|
Mar. 30, 1901
|
Improvements in the Formation of Drum Winding for Dynamo Electric Machines
|
Alfred Soames |
, England |
|
|
|
|
Improvements in the Formation of Drum Winding for Dynamo Electric Machines
|
Walter Langdon-Davies |
, England |
|
|
190,021,740
|
Sep. 28, 1901
|
Improvements in Dynamo Electric Machines
|
Alfred Soames |
, England |
|
|
|
|
Improvements in Dynamo Electric Machines
|
Walter Langdon-Davies |
, England |
|
|
686,856
|
Nov. 19, 1901
|
Dynamo Electric Machine
|
Alfred Soames |
, England |
|
|
|
|
Dynamo Electric Machine
|
Walter Langdon-Davies |
, England |
|
|
190,124,937
|
Nov. 06, 1902
|
Improvements in Polyphase Alternating Current Induction Motors
|
Alfred Soames |
, England |
|
|
|
|
Improvements in Polyphase Alternating Current Induction Motors
|
Walter Langdon-Davies |
, England |
|
|
190,125,312
|
Dec. 04, 1902
|
Improvements in Internal Combustion Engines
|
Walter Langdon-Davies |
, England |
|
|
|
|
Improvements in Internal Combustion Engines
|
Alfred Soames |
, England |
|
|
718,481
|
Jan. 13, 1903
|
Internal Combustion Engine
|
Walter Langdon-Davies |
, England |
|
|
|
|
Internal Combustion Engine
|
Alfred Soames |
, England |
|
|
322,379
|
Feb. 04, 1903
|
Changement de vites
|
Alfred Soames |
, England |
|
|
|
|
Changement de vites
|
Walter Langdon-Davies |
, England |
|
|
735,118
|
Aug. 04, 1903
|
Polyphase Alternating Current Induction Motor
|
Alfred Soames |
, England |
|
|
|
|
Polyphase Alternating Current Induction Motor
|
Walter Langdon-Davies |
, England |
|
|
26,628
|
Sep. 30, 1903
|
Wechselstrom-Induktionsmotor
|
Alfred Soames |
, England |
This is a Swiss patent. |
|
|
|
Wechselstrom-Induktionsmotor
|
Walter Langdon-Davies |
, England |
|
|
190,311,723
|
Mar. 31, 1904
|
Improvements in Clutches
|
Alfred Soames |
, England |
|
|
|
|
Improvements in Clutches
|
Walter Langdon-Davies |
, England |
|
|
190,311,147
|
May. 05, 1904
|
Improvements in Change Speed Gear.
|
Alfred Soames |
, England |
|
|
|
|
Improvements in Change Speed Gear.
|
Walter Langdon-Davies |
, England |
|
|
339,802
|
Jun. 20, 1904
|
Dispositif de Changement de Vitesse
|
Alfred Soames |
, England |
|
|
|
|
Dispositif de Changement de Vitesse
|
Walter Langdon-Davies |
, England |
|
|
190,322,690
|
Oct. 20, 1904
|
Improvements in Change Speed-Gear
|
Alfred Soames |
, England |
|
|
|
|
Improvements in Change Speed-Gear
|
Walter Langdon-Davies |
, England |
|
|
773,999
|
Nov. 01, 1904
|
Change Speed Gear
|
Alfred Soames |
, England |
|
|
|
|
Change Speed Gear
|
Walter Langdon-Davies |
, England |
|
|
775,503
|
Nov. 22, 1904
|
Change Speed Gear
|
Alfred Soames |
, England |
|
|
|
|
Change Speed Gear
|
Walter Langdon-Davies |
, England |
|
|
190,400,468
|
Dec. 08, 1904
|
Improvements in Change Speed-Gear
|
Alfred Soames |
, England |
|
|
|
|
Improvements in Change Speed-Gear
|
Walter Langdon-Davies |
, England |
|
|
190,407,384
|
Jan. 26, 1905
|
Improvements Relating to Change Speed Gear.
|
Alfred Soames |
, England |
|
|
|
|
Improvements Relating to Change Speed Gear.
|
Walter Langdon-Davies |
, England |
|
|
4,001
|
Apr. 19, 1905
|
39. Changement de vitesse
|
Walter Langdon-Davies |
, England |
|
|
|
|
39. Changement de vitesse
|
Alfred Soames |
, England |
|
|