Patent for improvements in the valve operating gear of petrol and other internal combustion engines

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Scope and Content

Improvements to the operating and controlling poppet type valves; uses pneumatic pressure rather than a spring to return the valve to its seat.

Archive Record|Table of contents

Frederick Lanchester collectionLAN

Correspondence and other documents ('Baxter' series)LAN/1

Frederick Lanchester correspondence and documents ('Fletcher' series)LAN/2

BlueprintsLAN/3

Sketch booksLAN/4

Note booksLAN/5

Patent for an improved apparatus for ruling parallel equidistant lines and for like purposesLAN/6/1

Patent (with Henry Lanchester) for an automatic bookmarkerLAN/6/2

Patent (with Henry Lanchester) for an improved mechanical contrivance for advertising purposes (photocopy)LAN/6/3

Patent for improvements in apparatus for governimg gas and other motive power enginesLAN/6/4

Patent for improvements in gas-motor enginesLAN/6/5

Patent for improvements in gas motor enginesLAN/6/6

Patent for improvements in the igniting and starting arrangements of gas and hydrocarbon enginesLAN/6/7

Patent for an improved igniting device for starting gas motor enginesLAN/6/8

Patent for improvements in igniting and starting gear for gas enginesLAN/6/9

Patent for improvements in gas enginesLAN/6/10

Patent for improvements in the valve and other arrangements of gas bags for gas enginesLAN/6/11

Patent for improvements in gas engine starting arrangementsLAN/6/12

Patent for improvements in engine governorsLAN/6/13

Patent for improvements in gas enginesLAN/6/14

Patent for improvements in gas engine detailsLAN/6/15

Patent for improvements in gas and petroleum enginesLAN/6/16

Patent for improvements in and appertaining to velocipede pedalsLAN/6/17

Patent (with Dugald Clerk) for improvements in gas and like enginesLAN/6/18

Patent for improvements in gas and oil motor enginesLAN/6/19

Patent for photography in coloursLAN/6/20

Patent for improvements in gas and oil motor enginesLAN/6/21

Patent for improvements in the driving mechanism of velocipedes and other road vehiclesLAN/6/22

Patent for improvements in the mechanism of power propelled vehiclesLAN/6/23

Patent for improvements in gas and oil motorsLAN/6/24

Patent for improvements in gas and other motive power enginesLAN/6/25

Patent for improvements in fluid pressure enginesLAN/6/26

Patent for improvements in friction clutchesLAN/6/27

Patent for improvements in the igniting arrangements of gas and oil motor enginesLAN/6/28

Patent for improvements in power propelled vehiclesLAN/6/29

Patent for improvements in power propelled road vehiclesLAN/6/30

Patent for improvements in gas and oil motor enginesLAN/6/31

Patent for improvements in and relating to keys for shaftingLAN/6/32

Patent for improvements in the igniting arrangements of gas and oil motor enginesLAN/6/33

Patent for improvements in and relating to aerial machinesLAN/6/34

Patent for improvements in power propelled road vehiclesLAN/6/35

Patent for improvements in jointed shaft couplingsLAN/6/36

Patent for improvements in gear cutting machinesLAN/6/37

Patent for improvements in gear for the transmission of powerLAN/6/38

Patent for improvements in and relating to power propelled road vehiclesLAN/6/39

Patent for improvements in fluid pressure enginesLAN/6/40

Patent for improvements in igniters for gas and oil motor enginesLAN/6/41

Patent for improvements in gas generatorsLAN/6/42

Patent for Improved ignition arrangements for gas and oil motor enginesLAN/6/43

Patent for improvements in power propelled vehiclesLAN/6/44

Patent for improvements in motive power enginesLAN/6/45

Patent for improvements in starting arrangements for gas and oil enginesLAN/6/46

Patent for improvements in inertia governorsLAN/6/47

Patent for improvements in or in connection with the ignition arrangements for gas and oil motor enginesLAN/6/48

Patent for improvements in the packing of piston rods and plungers subject to heat and pressureLAN/6/49

Patent for improvements in gear for the transmission of powerLAN/6/50

Patent for improvements in and relating to power propelled road vehiclesLAN/6/51

Patent for improvements relating to power propelled vehiclesLAN/6/52

Patent for improvements in cooling arrangements of gas and oil motor enginesLAN/6/53

Patent for improvements in gear for the transmission of powerLAN/6/54

Patent for improvements in and relating to road motor vehiclesLAN/6/55

Patent for improvements in internal combustion enginesLAN/6/56

Patent by Henry Jones Lanchester for an improved chimney pot or ventilatorLAN/6/57

Patent for improvements in grinding cylindrical parts for roller bearings and like purposesLAN/6/58

Patent for improvements in thrust bearingsLAN/6/59

Patent for improvements in the cooling arrangements of internal combustion enginesLAN/6/60

Patent for improvements in and connected with motor vehiclesLAN/6/61

Patent for improvements in and relating to fluid pressure engines, in part relating to power propelled vehiclesLAN/6/62

Patent for improvements in lifting jacksLAN/6/63

Patent for improvements in the clutch and brake mechanism of motor vehiclesLAN/6/64

Patent for improvements in activating mechanism for self-propelled vehiclesLAN/6/65

Patent for improvements in change speed mechanism for self-propelled vehiclesLAN/6/66

Patent for improvements in shaft couplingsLAN/6/67

Patent for improvements in the method of fixing dust-proof and oil-retaining screens for bearings and such like purposesLAN/6/68

Patent for improvements in dashboards and wind protection for self-propelled vehiclesLAN/6/69

Patent for improvements in level gauges for tanks containing fluidLAN/6/70

Patent for improvements in the ignition arrangements of gas and oil motor enginesLAN/6/71

Patent for improvements in mechanism for the propulsion of boatsLAN/6/72

Patent for improvements in turbine motorsLAN/6/73

Patent for improvements in the brake mechanism of power propelled road vehiclesLAN/6/74

Patent for improvements in mud-guards and dash-boards for power propelled road vehiclesLAN/6/75

Patent for improvements in the vapourising arrangements of oil motor enginesLAN/6/76

Patent for improvements in the steering and controlling mechanism of power propelled vehiclesLAN/6/77

Patent for improvements in electrical connectionsLAN/6/78

Patent for improvements relating to the road wheels of power propelled vehiclesLAN/6/79

Patent for improvements in condensers and coolers for power-propelled vehiclesLAN/6/80

Patent for improvements in power propelled road vehiclesLAN/6/81

Patent for improvements in motor carsLAN/6/82

Patent for improvements in the clutch brake and change gear mechanism of power propelled vehicles and vesselsLAN/6/83

Patent for improvements in the governing arrangements of internal combustion enginesLAN/6/84

Patent for improvements connected with motors and driving gear suitable for motor road vehicles and the likeLAN/6/85

Patent for improvements in mechanically propelled road vehiclesLAN/6/86

Patent for improvements in aerodromesLAN/6/87

Patent by George Lanchester for improvements in goggles for the use of motorists and cyclistsLAN/6/88

Patent for improvements in the change speed mechanism for power propelled vehiclesLAN/6/89

Patent for improvements in aerodromesLAN/6/90

Patent for improvements in driving mechanism for aeronautical or marine propellersLAN/6/91

Patent for improvements in the valve gear of internal combustion enginesLAN/6/92

Patent for improvements relating to the grinding and polishing of rollers and bushes for roller bearings and like purposesLAN/6/93

Patent for improvements relating to gear activating mechanism for motor vehiclesLAN/6/94

Patent for improvements in the valve gear of internal combustion enginesLAN/6/95

Patent by Frederick Lanchester, James Courthope Peache and William and Robinson Limited for improvements in the manufacture of piston packingsLAN/6/96

Patent for improvements relating to the steering of flying machines or aerodromesLAN/6/97

Patent by Daimler Motor Company (1904) Limited and Frederick Lanchester for improvements in motor road vehiclesLAN/6/98

Patent for improvements in alighting mechanism for flying machinesLAN/6/99

Patent for improvements in internal combustion enginesLAN/6/100

Patent by Henry Vaughan Lanchester for improvements in the construction of bridgesLAN/6/101

Patent for improvements in and relating to resiliant or spring arrangementsLAN/6/102

Patent for improvements in valve gear for internal combustion enginesLAN/6/103

Patent for improvements in detachable wheels for road vehiclesLAN/6/104

Patent for improvements relating to the propulsion of vehicles by combustion of prime mover and electrical storageLAN/6/105

Patent for improvements relating to high speed reciprocating enginesLAN/6/106

Patent for improvements relating to high speed reciprocating enginesLAN/6/107

Patent for improvements in two stroke cycle internal combustion engines more particularly for aeronautical machinesLAN/6/108

Patent for an improved method and apparatus for cutting worm gearLAN/6/109

Patent for improvements relating to the power and electrical installation of power propelled vehiclesLAN/6/110

Patent for improvements in alighting mechanism for aeronautical machinesLAN/6/111

Patent for improvements relating to the stabilisation of flying machinesLAN/6/112

Patent for improvements connected with the balancing of reciprocating enginesLAN/6/113

Patent for improvements pertaining to the balancing of reciprocating enginesLAN/6/114

Patent for improvements in mechanical pianoforte playersLAN/6/115

Patent for improvements in mechanical piano players and like instrumentsLAN/6/116

Patent for improvements in the mechanism of pianofortes and mechanical playersLAN/6/117

Patent for improvements in starting mechanism for internal combustion engines employed for the propulsion of automobile road vehiclesLAN/6/118

Patent for improvements in the actions of pianofortes and like instrumentsLAN/6/119

Patent for improvements connected with the starting of internal combustion enginesLAN/6/120

Patent for improvements relating to the balancing of reciprocating enginesLAN/6/121

Patent for improvements in detachable road wheels for automobile vehiclesLAN/6/122

Patent for improvements in dash pot or retarding apparatusLAN/6/123

Patent for improvements in change speed gear for motor vehiclesLAN/6/124

Patent for improvements in mechanical pianoforte playersLAN/6/125

Patent for improvements relating to folding seats, tables and the likeLAN/6/126

Patent for improvements in and relating to means for storing and supplying liquid fuel to internal combustion enginesLAN/6/127

Patent for improvements in and relating to the cylinders of internal combustion enginesLAN/6/128

Patent for improvements in explosive projectiles and in fuse mechanismLAN/6/129

Patent by Frederick Lanchester, Daimler Motor Company Limited, and John Lloyd Milligan for improvements in and relating to electrical transmission for automobile vehiclesLAN/6/130

Patent for improvements in the valve operating gear of petrol and other internal combustion enginesLAN/6/131

Patent for improvements in fuel feed valves and valve operating mechanism for internal combustion enginesLAN/6/132

Patent by Daimler Motor Company Limited and Frederick Lanchester for improvements relating to motor vehiclesLAN/6/133

Patent by Daimler Motor Company Limited and Frederick Lanchester for improvements relating to motor vehiclesLAN/6/134

Patent by Daimler Motor Company Limited and Frederick Lanchester Patent for improvements relating to railway coach and train propulsionLAN/6/135

Patent for improvements in mechanism for the receiving and launching of aeroplanes at seaLAN/6/136

Patent for improvements in internal combustion enginesLAN/6/137

Patent for improvements in internal combustion enginesLAN/6/138

Patent for improvements in floating mines and submarine vesselsLAN/6/139

Patent for improvements in floating mines and submarine defencesLAN/6/140

Patent for improved fuse mechanism for explosive asphyxiating or incendiary projectiles for the use of artilleryLAN/6/141

Patent for an improved device for controlling the firing of machine gunsLAN/6/142

Patent for an improved system of springing for automobile vehiclesLAN/6/143

Patent for improvements in clutch and change gear mechanism more especially applicable to motor vehiclesLAN/6/144

Patent for improvements in the springing of road or rail vehiclesLAN/6/145

Patent for an improved construction of tent and field hospitals, depots and like purposesLAN/6/146

Patent for an improved lateral plumb indicator for aircraftLAN/6/147

Patent for improvements in the attachment of aeronautical propellers and in bossesLAN/6/148

Patent for improvements in aeroplanes and apparatus for launching and receiving sameLAN/6/149

Patent for improvements in and relating to hot air enginesLAN/6/150

Patent by Frank Lanchester for improvements relating to fireplacesLAN/6/151

Patent for improvements in the lubrication of high speed reciprocating enginesLAN/6/152

Patent for improvements in internal combustion enginesLAN/6/153

Patent for improvements in heat engines for the production of motive powerLAN/6/154

Patent for improvements in the suspension and power transmission mechanism of automobile vehiclesLAN/6/155

Patent for improvements in the brakes and brake mechanism of power propelled vehiclesLAN/6/156

Patent for improvements in internal combustion enginesLAN/6/157

Patent for improvements in the construction of crankshafts and of bearingsLAN/6/158

Patent for improvements in pneumatic tyres and wheels for road vehiclesLAN/6/159

Patent for improvements in pneumatic tyres and wheels for road vehiclesLAN/6/160

Patent for improvements in means and mechanism for the elimination of torsional vibrations in high speed engines, shafting, crankshafts and the likeLAN/6/161

Patent by George Lanchester and Lanchester Motor Co. for improvements relating to vehicle bonnetsLAN/6/162

Patent for Improvement relating to the spring suspension of vehiclesLAN/6/163

Patent for improvements in the actions of pianofortesLAN/6/164

Patent by George Lanchester and the Lanchester Motor Company Limited for improvements relating to fuel supply systems for internal combustion enginesLAN/6/165

Patent by George Lanchester and the Lanchester Motor Company Limited for an improved automatically locking lever or winch mechanismLAN/6/166

Patent by George Lanchester and the Lanchester Motor Company Limited for improvements relating to vehicle wheelsLAN/6/167

Patent for improvements in the construction and roofing of buildings for exhibitions and like purposesLAN/6/168

Patent by George Lanchester and the Lanchester Motor Company Limited for improvements relating to gear changing mechanisms for mechanically propelled vehiclesLAN/6/169

Patent for improvements in resilient wheels for road vehiclesLAN/6/170

Patent for an improve apparatus for heating or cooling and ventilating buildings and shipsLAN/6/171

Patent by George Lanchester and the Lanchester Motor Company Limited for improvements relating to folding seats for motor vehiclesLAN/6/172

Patent for improvements in the transmission and brake mechanism of power propelled vehiclesLAN/6/173

Patent for improvements in and connected with the under carriages of power propelled vehiclesLAN/6/174

Patent by Frederick Lanchester and Daimler Company Limited for improvements relating to the magneto ignition of internal combustion enginesLAN/6/175

Patent for improvements in the transmission and brake mechanism of power propelled road vehiclesLAN/6/176

Patent for improvements in the suspension or springing of power propelled vehiclesLAN/6/177

Patent for improvements in the propulsion mechanism of vessels and of automobile vehicles of amphibious typeLAN/6/178

Patent for improvements in the road wheels of automobile vehiclesLAN/6/179

Patent for hand wheels for the steering of automobile vehicles and like purposesLAN/6/180

Patent for improvements in the transmission and brake control mechanism of power propelled vehiclesLAN/6/181

Patent for improvements in the brake mechanism of power propelled vehiclesLAN/6/182

Patent by George Lanchester and Lanchester Motor Company Limited for improvements relating to motor road vehicle brakesLAN/6/183

Patent for improvements in road wheels for automobile vehiclesLAN/6/184

Patent for improvements in the transmission and change gear mechanism of motor vehiclesLAN/6/185

Patent by Frederick Lanchester and Daimler Company Limited for improvements in the two-to-one driving mechanism of cam shafts or eccentric shafts in internal combustion engines operating on the four stroke cycleLAN/6/186

Patent by Frederick Lanchester and Daimler Company Limited for improvements in the pistons of internal combustion enginesLAN/6/187

Patent for improvements in the brakes and brake mechanism of power propelled vehiclesLAN/6/188

Patent for improvements in the springing of motor road vehiclesLAN/6/189

Patent for improvements in the lubrication system of reciprocating enginesLAN/6/190

Patent by Frederick Lanchester and Edward Claude Shakespeare Clench of The Aster Engineering Company (1913) Limited for improvements relating to high speed reciprocating enginesLAN/6/191

Patent by George Lanchester and Lanchester Motor Company Limited for improvements relating to vehicle wheelsLAN/6/192

Patent by Frederick Lanchester, Daimler Company Limited and Joseph Dixon (Daimler) for improvements relating to motor vehicle chassisLAN/6/193

Patent by Frederick Lanchester, Daimler Company Limited and George Needle (Daimler) for improvements relating to the coating internally of hollow articles with metalLAN/6/194

Patent for improvements in automobile vehiclesLAN/6/195

Patent for improvements in the valves and valve gear of internal combustion enginesLAN/6/196

Patent for improvements in the steering mechanism of automobile vehiclesLAN/6/197

Patent for improvements in the steering mechanism of automobile vehiclesLAN/6/198

Patent for improvements in the balancing of reciprocating enginesLAN/6/199

Patent for improvements in the operating mechanism for change gear in automobile vehiclesLAN/6/200

Patent for improvements relating to high speed multicylinder motive power enginesLAN/6/201

Patent for improvements in front wheel brake mechanism for automobile road vehiclesLAN/6/202

Patent by Frederick Lanchester and Daimler Company Limited for improvements in the steering mechanism of automobile road vehiclesLAN/6/203

Patent by Frederick Lanchester and Lanchester's Laboratories Limited for improvements in the steering mechanism of power propelled vehiclesLAN/6/204

Patent for improvements in the construction and windings of armatures for electric generators or motorsLAN/6/205

Patent by Frederick Lanchester and Lanchester's Laboratories Limited for improvements in the pedal mechanism for controlling power propelled vehiclesLAN/6/206

Patent by Frederick Lanchester and Lanchester's Laboratories Limited for improvements in the cylinder cooling of internal combustion enginesLAN/6/207

Patent for improvements in the construction of automobile vehiclesLAN/6/208

Patent by Frederick Lanchester and Lanchester's Laboratories Limited for improvements in armatures of electro-motors and generatorsLAN/6/209

Patent for improvements in the petrol feed of carburettors for internal combustion enginesLAN/6/210

Patent by Frederick Lanchester and Lanchester's Laboratories Limited for improvements relating to dynamo electric machinesLAN/6/211

Patent for improvements in window and window lifting mechanism more especially for motor vehiclesLAN/6/212

Patent by George Lanchester, Harry Fred Lee Orcutt, and the Gear Grinding Company for improvements relating to variable speed gears for use on motor vehicles and for like purposesLAN/6/213

Patent by George Lanchester for improved means of effecting an angular adjustment or movement between two connected partsLAN/6/214

Patent for improvements in or relating to the bonnets of automobile vehiclesLAN/6/215

Patent by Frederick Lanchester and Daimler Company Limited for improvements in the valves and valve mechanisms of internal combustion enginesLAN/6/216

Patent by Frederick Lanchester and Lanchester's Laboratories Limited for improvements in changegear mechanism more especially applicable to automobile vehiclesLAN/6/217

Patent for improvements in spindles and spindle mountings for the abrasive wheels of precision grindersLAN/6/218

Patent by Frederick Lanchester and Lanchester's Laboratories Limited for improvements in the steering mechanism of power propelled road vehiclesLAN/6/219

Patent by Frederick Lanchester and Lanchester's Laboratories Limited for an improved mechanism for the rectification of gear wheelsLAN/6/220

Patent for an improved damper for eliminating torsional vibration in the shafts of high speed engines and machineryLAN/6/221

Patent for improvements in the ignition mechanism of internal combustion enginesLAN/6/222

Patent for an improved telephonic loud speakerLAN/6/223

Patent for improvements in gramophones and like sound reproducing apparatusLAN/6/224

Patent for improvements in moving coil microphonesLAN/6/225

Patent for improvements in moving coil loud speakersLAN/6/226

Patent for improvements in loud speaker and like hornsLAN/6/227

Patent for improvements in sound reproduction apparatusLAN/6/228

Patent for an improved dynamometer for testing motive power enginesLAN/6/229

Patent for improvements in buffers for locomotives, coaches and other vehiclesLAN/6/230

Patent for improvements in loud speakers and sound emission apparatusLAN/6/231

Patent for improvements relating to the field magnets of microphones, loud speakers and the likeLAN/6/232

Patent for improvements in mechanism for the reproduction of soundLAN/6/233

Patent for improvements in warning devices for motor vehiclesLAN/6/234

Patent for improvements in apparatus for the reproduction of music, speech and the likeLAN/6/235

Patent for an improved appliance for the convenient storage and handling of pins, gramophone and other needles and the likeLAN/6/236

Patent for improvements connected with wireless reception and apparatus thereforLAN/6/237

Patent by Frederick Lanchester, Ralph Howard Pearsall and Lanchester's Laboratories Limited for improvements in the construction of field magnets for moving coil loud speakersLAN/6/238

Patent for improvements in mechanism for the reproduction of recorded music, speech and the likeLAN/6/239

Patent for improvements in mechanism for the reproduction of soundLAN/6/240

Patent for improvements in diaphragm mountings for acoustical apparatusLAN/6/241

Patent for improvements in loud speakers of the moving coil typeLAN/6/242

Patent for improvements in and relating to multiple ratio transformersLAN/6/243

Patent for improvements in telephonic receivers or speakers of the moving coil typeLAN/6/244

Patent by George Lanchester, Birmingham Small Arms Company Limited and Algernon Edward Berriman for improvements in or relating to motor vehiclesLAN/6/245

Patent by George Lanchester and Daimler Company Limited for improvements in stuffing box substitutesLAN/6/246

Patent for improvements in telephonic receivers and loud speakersLAN/6/247

Patent by Frederick Lanchester, British-Thomson Houston Company Limited, and Arthur Primrose Young for improvements connected with the clutch and change gear mechanism of power propelled vehiclesLAN/6/248

Patent by Frederick Lanchester and British-Thomson Houston Company Limited for improvements in and relating to electromagnetic clutchesLAN/6/249

Patent for improvements in the suspension of motor road vehiclesLAN/6/250

Patent by George Lanchester and Anthony Edgar Somers for improvements in and relating to automatic fire armsLAN/6/251

Patent by George Lanchester and Anthony Edgar Somers for improvements in the manufacture of rifles, machine guns and sub machine gunsLAN/6/252

Patent by George Lanchester and Anthony Edgar Somers for improvements in or relating to fire armsLAN/6/253

Patent by George Lanchester and Anthony Edgar Somers for improvements in automatic firearmsLAN/6/254

Patent by George Lanchester and Ronald Wallace Buckler for Improved trigger mechanism for automatic firearmsLAN/6/255

Patent by George Lanchester and Sterling Engineering Comany Limited for improvements in or relating to electric torchesLAN/6/256

Patent by George Lanchester and Sterling Engineering Co. for improvements in trigger mechanism for automatic firearmsLAN/6/257

Patent by George Lanchester and Sterling Engineering Company Limited for improvements in stocks for automatic firearmsLAN/6/258

Patent by George Lanchester for improvements in trigger mechanisms for automatic firearmsLAN/6/259

Patent by Frank Lanchester for improvements relating to portable platformsLAN/6/260

Patent by George Lanchester for improvements in or relating to optical projectors for images carried on a fim stripLAN/6/261

Patent by George Lanchester for improvements in optical projectors for images carried on a film stripLAN/6/262

Patent by George Lanchester and Sterling Engineering Company Limited for improvements in rotary earth boring bitsLAN/6/263

Patent by George Lanchester, John Hetherington, and Sterling Engineering Co. for improvements in mobile well drilling apparatusLAN/6/264

Patent by John Hetherington, George Lanchester and Sterling Engineering Co. for improvements in or relating to multiple-way valvesLAN/6/265

Glass plate negatives and imagesLAN/7

Photographic negatives of the blueprints (LAN/3)LAN/8

Sales and marketing photographsLAN/9