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1. 发明专利

CA217447A HELICOPTER 未知
公开(公告)号：CA217447A
公开(公告)日：1922-04-04
申请号：CA217447D
申请人： HEWITT PETER COOPER
发明人： HEWITT PETER COOPER

2. 发明专利

GB145013A Improvements in and relating to power transmitting gearing especially applicable to helicopters 未知
公开(公告)号：GB145013A
公开(公告)日：1921-09-12
申请号：GB1578620
申请日：1920-06-10
申请人： PETER COOPER HEWITT
IPC分类号： B64C27/12
摘要： 145,013. Hewitt, P. C. June 14, 1919, [Convention date]. Toothed gearing.-Two shafts such as the propeller shafts of a helicopter are driven in opposite directions by gearing comprising two toothed rings flexibly connected to the shafts and meshing at diametrically opposite points with two pinions which are connected directly or through additional flexible gearing with the crankshafts of two alined engines. Fig. 3 shows in cross-section two vertical shafts 1, 2 adapted to rotate in opposite directions within a tubular member 3 attached to the main frame of the machine. Each shaft has ball thrust and journal bearings, those of the shaft 2 being carried by a sleeve 56 surrounding the lower end of the member 3. Two alined shafts 8, 11 connected to the engines through couplings 7, 10 have pinions 9, 12 gearing with two toothed rings 14, 15 which are connected by flexible steel plates 17 to hubs 18 on the shafts 1, 2. The rings are maintained concentric by a ball race 21. Rollers 24 carried by the main frame bear against runways 26 on the rings 14, 15 to keep them in engagement with the pinions 9, 12. Fig. 4 shows a modification in which the gear reduction is in two steps. The shafts 1 , 2 are connected bv flexible plates 76 to two rings 72, 73 which are held in engagement by rollers 78 with two pinions 69, 71 on two shafts 68, 70. These shafts are keyed to hubs 65, 67, which are connected by flexible steel cones 63, 66 to two toothed rings 61, 62 in mesh with two pinions on the engine shafts, one of these pinions being shown at 9 . The rings 61, 62 are supported by rollers 75 and are kept in engagement with the pinions on the engine shafts by other rollers (not shown). The flexible gearing allows for any racking between parts of the machine.

3. 发明专利

GB145012A Improvements in and relating to flying machines 未知
公开(公告)号：GB145012A
公开(公告)日：1921-09-12
申请号：GB1578520
申请日：1920-06-10
申请人： PETER COOPER HEWITT
IPC分类号： B64C27/04
摘要： 145,012. Hewitt, P. C. June 14, 1919, [Convention date]. Helicoptcrs; propelling; steering, balancing and regulating altitude.-Relates to the construction and mounting of the lifting propellers for flying machines of the helicopter type. Upper and lower propellers 1, 2 are mounted on concentric vertical shafts 3, 4, which are driven in opposite directions by motors 8, 9 through bevel gearing 10, 11, 12, 14. Each of the gear wheels 12, 14 is thus subjected to a turning couple, and thrust on the bearings is avoided. Each of the wheels 12, 14 is formed with a rigid ring portion 15, Fig. 3, supported by a flexible plate 16 and engaging the pinions 10, 11. The gears are maintained coaxial by a ball bearing 18 between members 19, 20. The gears are maintained in engagement by rollers 24 supported from the frame of the machine by straps 25. Each propeller is provided with two radial arms 26 carrying blades 27. Each arm 26 is mounted for movement around its longitudinal axis to vary the pitch of the blades, and is provided at its inner end with a circular flange 28, Fig. 13, secured by bolts 29 to a vertical flange 30 projecting from a flange on the propeller shaft. The bolt-holes in the flanges 28 are elongated so that the arms 26 may be fixed at any desired pitch. Each arm 26 extends the full length of the blade 27, which is held in position by cross-braces 37, Fig. 2, and a cross-arm 38, which is connected by guy wires 39, 40 with the arm 26 at a point between the axis and the arm 38. Similar wires 41, 42 are connected at a point near the outer end of the blade. Tension wires 43, 44 are secured to rigid arms 45, 46 on the propeller shaft and also to the arms 26 to transmit, the drive. Other tension wires 47, 50 are also provided. The propeller 1 is braced against vertical strains by tension wires 52, 53, 54, 55, 56, 57, 58, 59, Fig. 1, and similar bracing is provided for the propeller 2. The arms 45, 46 are channel-shaped, as shown in Fig. 3, to secure rigidity, and are secured to flanges 34 and 70 on the shafts 4, 3. Channel brackets 71, 72 are also fixed to the flanges 70 and 34 respectively, and the side flanges are secured together by gusset plates 73. The arms 45, 46 and their connexions are shown in detail in Figs. 4 and 5. The wires 44, 47 and 43, 50 are connected to the arms 46, 45 respectively by nuts 80 bearing against loops 81 on the outer ends of the arms. Wires 86, 87 are attached to the propeller shaft and to the shanks 83 of the loops 81, inclined surfaces being provided against which the nuts are seated. The wires 52, 53, 54, 55, 86, figs. 4 and 5, are provided with nuts 91 bearing on bridge members 92, which are movable longitudinally on the arms 93, 94 of staples 95. The staples are threaded through openings in a circular flange 96, and the wires may be tightened by nuts 97, 98 without any twisting of the wire. The method of securing the wires to the arms 26 is shown in Fig. 7. A flat plate 103 is provided with lugs 104, 105 at right-angles to its surface, the width across the lugs and across the plate being each equal to the internal diameter of the hollow arm 26. The cross-member thus formed is inserted longitudinally into the arm 26 and anchored in position by pins passing through the arm and through openings 106 in the plate 103. The wires to be secured are threaded into openings 107, 108. Figs. 10 and 11 show a device fur securing four horizontal and two inclined wires to one of the arms 26. The plate 110 is provided with lugs 111, 112 in its own plane and lugs 113, 114 at right-angles, all being thicker than the plate 110. The wires to be secured are threaded into openings such as 115, 117, 118, 121, 122, the body portion being cut away as at 123, 124 for that purpose. The lower frame, Fig. 1, is composed of tubular arms 125, 126 connected to the tube 5. The shafts 3, 4 pass through the bearing 5. The shaft 3 is formed of two parts 130, 131, Fig. 3, the upper part of the shaft being increased in thickness at a point adjacent to the flanges 100, 101, i,e. between the upper and lower propellers, to provide for bending strains during lateral night. Ball-bearings 133, 134, 135 maintain the shafts 3, 4 in coaxial position, and bearings are also provided to take the weight of the propellers. The shaft 4 carries a sleeve 141 on which is mounted in order a collar 142, sleeve 143, collar 144, sleeve 145, and hub 17 of the wheel 12. A thrust bearing 149 is arranged between the collars 142, 144, and a bearing 152 between the collar 144 and hub 17. A casing 153 encloses the bearings. These bearings provide for the upward thrust of the propeller 2 during rotation, and for its weight when stationary. bimilar bearings are provided for the shaft 3. Each propeller arm 26 carries a number of cross-braces, arranged more closely towards the outer end of the blade, and upper and lower plates 171, 172, Fig. 16, are riveted to them. Each cross-bar and the side-plates are constructed of aluminium, and the cross-bars are provided with top and bottom flanges 174, 175 for the attachment. of the side plates, and with circular flanges for attachment to the arm 26. Wedge-shaped, blocks 177, 178 are arranged between the flanges 174 and the tube 26. The two ends of the cross-braces are provided with longitudinal, strips 181, 182 to connect the flanges together. The propeller blade is supported on the tube 26 so that its support is forward of the centre of pressure and the blade is pulled and not pushed by the support. The blade may be sufficiently flexible to permit of an automatic variation of the pitch by the air pressure. The machine is turned about, the axis of the shafts 3 and 4 by planes 200, 201, Fig. 1, which may be tilted about a horizontal axis in opposite directions. The downdraught from the propellers then produces a couple tending to rotate the machine. The planes 200, 201 may also be rotatable, about vertical axes 200 , 201 so that they may be used as rudders. If the machine is required to be tilted to produce lateral motion, one of the planes 200, 201 is turned into the horizontal, and the machine may be kept in tilted position by planes 202, 203, which may be inclined to the horizontal.

4. 发明专利

GB191222246A Improvements relating to Vapour Electric Apparatus. 未知
公开(公告)号：GB191222246A
公开(公告)日：1913-04-03
申请号：GB191222246D
申请日：1912-09-30
申请人： HEWITT PETER COOPER
发明人： HEWITT PETER COOPER
IPC分类号： H01J13/06
摘要： 22,246. Hewitt, P. C. Oct. 10, 1911, [Convention date]. Low - pressure metallic - vapour apparatus. - A rectifier has a liquid cathode in which is immersed a metal body of high thermal conductivity, and wetted by the liquid, with an edge projecting slightly above the liquid. In the form shown in Fig. 1, a metal tube 13, at the bottom of a metal container 1, has a gap in its upper projecting edge, and is surrounded by an insulating shield 14. Cooling-fluid such as oil is circulated through a jacket 9 and through the hollow anode 2, which is introduced into the container through an insulating-plug 4. In the modification shown in Fig. 4, the metal body 16 has two circular grooves 18, with gaps in the projecting edges, and connected by passages 20 for the liquid ; a passage 17 for the cooling-fluid communicates with the jacket 9. Specification 10,672/04 is referred to.

5. 发明专利

FR448598A 未知
公开(公告)号：FR448598A
公开(公告)日：1913-02-04
申请号：FR448598D
申请日：1912-09-23
申请人： PETER COOPER HEWITT
发明人： HEWITT PETER COOPER
IPC分类号： H01J13/06 , H01J13/12

6. 发明专利

FR448548A 未知
公开(公告)号：FR448548A
公开(公告)日：1913-02-03
申请号：FR448548D
申请日：1912-09-20
申请人： PETER COOPER HEWITT
发明人： HEWITT PETER COOPER
IPC分类号： H01J13/06 , H01J13/08

7. 发明专利

GB191121904A Improvements relating to Vapour Electric Apparatus. 未知
公开(公告)号：GB191121904A
公开(公告)日：1912-08-08
申请号：GB191121904D
申请日：1911-10-04
申请人： HEWITT PETER COOPER
发明人： HEWITT PETER COOPER
IPC分类号： H01J13/08
摘要： 21,904. Hewitt, P. C. Oct. 4. Low-pressure metallic-vapour apparatus.-The cathode consists of gallium, indium, lead, tellurium, or arsenic, or mixtures thereof, in order that the apparatus may be worked at a higher temperature than usual. A metal container is preferably used. The invention is applicable particularly to rectifiers. The Provisional Specification also mentions the use of caesium, rubidium, potassium, sodium, lithium, tin, thallium, cadmium, and zinc, or other metals having a lower vapour-tension and being better heat conductors than mercury.

8. 发明专利

CA120778A ELECTRICAL DISTRIBUTION 未知
公开(公告)号：CA120778A
公开(公告)日：1909-09-28
申请号：CA120778D
申请日：1905-05-01
申请人： HEWITT PETER COOPER , COOPER HEWITT ELECTRIC CO
发明人： HEWITT PETER COOPER

9. 发明专利

CA119960A VAPOUR ELECTRIC CONDUCTOR 未知
公开(公告)号：CA119960A
公开(公告)日：1909-08-17
申请号：CA119960D
申请日：1904-12-13
申请人： COOPER HEWITT ELECTRIC CO , HEWITT PETER COOPER
发明人： HEWITT PETER COOPER

10. 发明专利

CA113679A HIGH TENSION CONVERSION 未知
公开(公告)号：CA113679A
公开(公告)日：1908-08-25
申请号：CA113679D
申请日：1907-03-13
申请人： HEWITT PETER COOPER , COOPER HEWITT ELECTRIC CO
发明人： HEWITT PETER COOPER

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