baber/WOPTO huggingface dataset:
Patent GB-419559-A (GB)
Title: Aeroplane wings
IPC: B64C9/24
Filed: 1933-10-11
Abstract: 419,559. Aircraft planes; controlling. L.P.R. CO., 277, Park Avenue, New York, U.S.A. Oct. 11, 1933, No. 28102. Convention date, Oct. 11, 1932. [Class 4.] An aeroplane wing comprises an auxiliary aerofoil 2 rigidly attached to the main wing 1 and movable members 5, 6, 7 to reduce the resistance due to a slot which is formed, at high angles of incidence of the wing 1, in response to changes of pressure distribution on the surface of the aerofoil 2. As shown, the aerofoil 2 is built up of wooden strips 12, 15 ribs 8 and metal covering 9. The members 5, 7 are connected to the canvas member 6 and are pivoted respectively to the leading and trailing edges of the aerofoil 2. Holes 10, cause, at low angles of incidence of the wing 1, through pressure of the air in the space 4, the members 5, 6, 7 to assume the dotted line positions, and at high angles of incidence reduction of pressure in the space 4 brings about the collapsing of the members 5, 6, 7 to form a slot. Drain holes 19 are provided and freezing up of the movable members may be prevented by a heating system.
Patent GB-603555-A (GB)
Title: Improvements relating to electric navigation and like light systems
IPC: H05B39/09
Filed: 1945-10-24
Abstract: 603,555. Control systems for consumption apparatus. CHANCE BROS, Ltd., HALLETT, L. B. H., and BERTENSHAW, N. W. Oct. 24, 1945, No. 28106. [Class 38 (iv)] Switching control.-In a flashing light system, an electric lamp c supplied at terminals a, a from a battery or other source, is controlled by switches s1-s4 associated with a pair of relay circuits d, e connected in parallel with the lamp. Closure of a main switch in the lamp circuit causes the latter to light, charges condensers f, f<SP>1</SP> and energizes relays r1, r2, each of which has a suitably timed delay action. Relay r1 opens switch s1 and relay r2 thereafter opens switches s2-s4. All switches are then held open by their associated relays which are energized by the discharge of condensers f, f respectively, the discharge times of which are adjustable by means of variable resistances or inductances g, g1. The lamp may be rendered inoperative during daylight hours, by a selenium element connected in the circuit of relay r2 ; also an additional contact may be so arranged in the circuit of relay r2 as to effect continuous lighting of the lamp, in the event of failure of this relay.
Patent GB-262238-A (GB)
Title: An improved clutch for motor vehicles, cranes, winches and the like
IPC: F16D13/18
Filed: 1925-11-09
Abstract: 262,238. Coward, E. S. Nov. 9, 1925. Clutches, friction. - In friction clutches for motor vehicles, cranes, winches, machine tools &c., bands or shoes, carried by one member, are adapted to be brought into engagement with a drum by eccentrics rotated by substantially-radial arms resiliently held against a sliding cone or other actuating-member of variable eflective diameter. A motor-vehicle clutch comprises two pairs of friction-faced expanding shoes c<1>, c<2>, d<1>, d<2>, pivoted on floating pivots e and retracted by springs f. Arms r, adjustably clamped between nuts p and serrated collars s on spindles m, are held by the springs f or auxiliary springs (not shown) with their ends against a conical or spheroidal actuating-sleeve w, pressed by a spring x and withdrawable for declutching by a pedal &c. 11. The hemispherical ends v of the arms r may be of antifriction metal or may carry rollers. Two pairs of eccentrics n on each spindle m engage half sheaves o, which are formed as wedges to coact with the inclined ends of the shoes, as described in Specification 250,440, [Class 103 (i), Brakes &c.]. Lateral displacement of the shoes is prevented by lugs k on radially-adjustable blocks j carried by a spider b. One shoe of each pair has a tongue h engaging a notch in the block j to prevent undue displacement of the shoes. The pivoted ends of the shoes may be slotted to engage blocks independently pivoted on the spider b, as described in Specification 250,440, the slots being, however, oblique to the radius and crossing one another at right angles. In a modification, applicable to machine-tool countershafts &c., each arm is curved, is connected at its end by a tension spring to a point near the pivot of the other arm, and carries at an intermediate point the roller &c. contacting with the actuating-cone, which is moved by a lever &c. to disengage the clutch by spreading the arms apart against their springs. The operating-gear may be slightly modified for use with cranks, winches &c., where the clutch is normally disengaged.
Patent GB-680876-A (GB)
Title: Improvements in or relating to vehicle change-speed gear-boxes
IPC: F16H3/66
Filed: 1950-11-17
Abstract: 680,876. Change-speed gear. FORD MOTOR CO., Ltd. Nov. 17, 1950 [Nov. 17, 1949], No. 28193/50. Class 80 (ii). A self-contained planetary gear, giving two reduced speeds, direct-drive and reverse, on a vehicle and having its input shaft 16 driven through a torque-converter of the overrun reactor type, as shown, or through a simple clutch, comprises planets 25 on a carrier 22 integral with the output shaft 21, which planets mesh both with a sun 20 fast on the input shaft 16 and centre-planets 29 of triple planets, on the same carrier, the larger planets 30 of which mesh a freely-mounted reaction sun 32, band-braked at 43 for intermediate speed (1.57 to 1), whilst their opposite end planets 31 mesh both with a freely-mounted reaction sun 33 and ring 34 band-braked at 48, 50 for lowspeed (2.3 to 1) and reverse (2.0 to -1) respectively. High-speed, direct-drive is by clutching the first reaction sun 32 to the input shaft 16 at 35. A forward-overrun one-way clutch 44 between the intermediate-speed reaction sun 32 and its brake 43, permits the direct-drive clutch 35 to be engaged without disengaging the intermediate speed brake 43 so that shifts between these speeds occur without power-interruption and by operation of clutch 35 only. In addition, . the fact that in all ratios the intermediate-speed reaction sun 32 never rotates forwards at a greater speed than the input shaft 16 makes it possible to arrange a reverse-overrun one-way clutch 52 between the said sun 32 and input shaft, whereby negative torque for enginebraking and starting is transmitted from the output shaft 21 at one-to-one ratio even with all the brakes and the clutch disengaged, e.g. in neutral. Only a single engine-driven pump 19 is thus required to provide servo oil-pressure for operating all the brakes and the clutch. The brake-bands are operated at one end only, through simple spring-released levers by pressure on single-acting pistons in cylinders cast integrally with a common bolt-on base-plate 54, the reverse cylinder 64 being larger than and arranged oppositely to those 56, 63 for low and intermediate. The direct-drive clutch 35 is engaged by oil pressure on an annular-piston 36 against a return spring 37. Individual piston-valves (Fig. 9, not shown) supply pressure to the clutch and brakes under control of solenoids 80-83, Fig. 13, energised selectively by depressing pushbuttons F, L, R, a further button N for neutral releasing any previously depressed button and also completing the circuit of the engine starting switch 84 and its solenoid 85. Button L gives low, intended for emergency only, whilst F gives intermediate speed, by solenoid 81, shift to high being effected only automatically above a predetermined vehicle speed by a centrifugal governor 79 (Figs. 1 and 13) or at low enginesuction by a manifold-pressure responsive switch 77, the governor and pressure-switches being in parallel in the circuit of the clutch-valve solenoid 80.
Patent GB-773975-A (GB)
Title: Improvements in and relating to harvesting machines
IPC: A01D57/20
Filed: 1953-10-14
Abstract: 773,975. Reaping machines. McBAIN, A. Oct. 6, 1954 [Oct. 14, 1953], No. 28275/53. Class 6(3). A windrower, comprising a frame 10 carrying a cutter-bar 17, a reel 14 and a laterally-discharging endless apron 11, is mounted rigidly on the outer ends of a pair of arms 22, the other ends of which are pivoted to brackets 23 secured to the rear axle of a tractor, the frame being floatingly suspended by springs 26 from the power-lift arms 27 of the tractor, which are not used for lifting the frame. The reel, cutter, and apron are driven from the power take-off through a shaft 12 and chain-drives 13, 15. A hand-operated lifting quadrant 31 is connected by a link 30 to the arm 22 so that the machine may be lifted by hand.
Patent GB-1507735-A (GB)
Title: Two-receiver variable-density logging system
IPC: G01V1/44
Filed: 1975-07-04
Abstract: 1507735 Well-logging MOBIL OIL CORP 4 July 1975 [17 July 1974] 28283/75 Heading G1G An acoustic velocity log of borehole formations is obtained by operating a one-transmitter/tworeceiver logging tool in cycles each comprises a pulse transmission period followed by a reception period; deriving a composite video signal c Fig. 2c in which the video signals are alternately from the two receivers R1, R2 in respective successive cyles; triggering the sweep of a CRO once per cycle; applying the composite video signal to the intensity modulation input of the CRO so that the R 1  and R 2  signals are displayed in alternate sweeps as variable-density traces; and recording successive sweep displays in side-by-side relationship to produce the log Fig. 8. In the embodiment described, downhole circuitry gates the two receiver signals alternately for transmission uphole together with transmitter trigger pulses a Fig. 2A and a receiver select signal b Fig. 2B. Uphole circuitry Fig. 4A (not shown) shapes the trigger pulses into pulses d Fig. 2D which are combined with c to give a video signal e Fig. 2E for recording on a video channel of a conventional video tape recorder. Signal b is differentiated to give a bi-polar spike waveform which is conbined Fig. 4B (not shown) with a microphone voice-signal to give signal f Fig. 2F for recording on an audio channel of the recorder. Also recorded are tool depth data pulses, and timing signals for control of the recorder playback speed. During subsequent playback of the tape, signal b is reconstituted from signal f, signal e is separated into a transmitter trigger pulse signal h Fig. 2H and a receiver signal i Fig. 2, and gating pulses embracing the expected reception periods of the R1 and R2 signals are generated from h by first and second monostable circuits respectively, the second monostable being triggered by the trailing edge of the pulse from the first. The CRO sweep is triggered by the leading edge of the first gating pulses. The gating pulses are used to gate the receiver signal i to the CRO intensity control and prevent cross-talk between the two receiver signals. Details of the playback signal processing circuitry are given Figs. 6A and 6B (not shown). The CRO display is photographed to give the velocity log comprising side-by-side traces, movement of the film being synchronised with the recorded tool depth pulses.
Patent GB-766881-A (GB)
Title: Improvements relating to cathodes for high power valves
Inventor: DUNSMUIR ROBERT
IPC: H01J1/20
Filed: 1953-10-14
Abstract: 766,881. Thermionic cathode constructions. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 13, 1954 [Oct. 14, 1953], No. 28350/53. Class 39(1). A cathode comprises a cylindrical metal support 1 through which a heater passes, the support being overwound with a helical wire 4, the diameter of the wire being several times the spacing between turns, which spacing is filled with emissive material 5 (or 5<1>) forming a substantially smooth emissive surface. The overwinding wire may itself be overwound with a second, finer, wire 7, again closely spaced compared with its diameter. The support tube and wires may all be of nickel, and sintered together. The cathode may be used in a magnetron.
Patent GB-1016813-A (GB)
Title: New organotin derivatives and their preparation
IPC: C07F7/22
Filed: 1964-07-09
Abstract: Organotin compounds of formula RnSn(CH2OR1)4- n, wherein n is 2 or 3 and R and R1 are alkyl, cycloalkyl or aralkyl radicals, are modifying agents for lubricating oils.ALSO:Organotin compounds of formula RnSn(CH2OR1)4- n wherein n is 2 or 3 and R and R1 are alkyl, cycloalkyl or aralkyl radicals are used for curing organosilicon polymers.  In examples a mixture of polydimethylsiloxane oil and ethyl polysilicate with bis-(ethoxymethyl)diethyltin is converted to an elastic solid, and a paste of polydimethylsiloxane oil with dry silica, mixed with methyltriacetoxysilane and bis-(methoxymethyl) dibutyl tin forms an elastic, non-sticky film when spread on a glass plate.ALSO:The invention comprises compounds of formula RnSn(CH2OR1)4- n in which n is 2 or 3, and R and R1 are alkyl, cycloalkyl or aralkyl radicals, preferably alkyl radicals of up to 4 carbon atoms, cyclopentyl, methylcyclopentyl, cyclohexyl, methyl-cyclohexyl or benzyl radicals. In particular R may be an alkyl radical of up to 4 carbon atoms and R1 methyl or ethyl. The compounds are prepared by condensing RnSnX4- n, wherein X is halogen, preferably chlorine or bromine, with 4-n molecular proportions of a chloromethyl ether ClCH2OR1 under anhydrous conditions in the presence of magnesium, activated with preferably mercuric chloride, and a cyclic ether, e.g. tetrahydrofuran. Suitably an excess of magnesium and the chloromethyl ether is used.  Part of the chloromethyl ether may be added to the magnesium and cyclic ether and after reaction has begun, the organotin compound and the remainder of the chloromethyl ether are added separately or simultaneously, the temperature being maintained between 10 DEG  and 40 DEG  C.  The reaction mass is hydrolysed with water, mineral acid or an ammonium salt solution and the desired product isolated from the organic fraction, e.g. by distillation.  It may be converted into a chloromethyl organotin compound by treatment with acetyl chloride.
Patent GB-1149981-A (GB)
Title: Rotary positive-displacement pumps or compressors
Inventor: LUTZ OTTO
IPC: F04C2/46
Filed: 1967-06-20
Abstract: 1,149,981. Rotary pumps and compressors. O. LUTZ. June 20, 1967 [June 20, 1966], No.28436/67. Heading F1F. A rotary positive-displacement pump or compressor, comprises at least four flexible flat blades or vanes 28, 30, 32, 34 clamped at the corners of a casing 2, which has an internal profile in a transverse cross-section of substantially square or equilateral polygonal shape to suit the number of vanes, the vanes being situated between a pair of circular plates or webs 20, 22 carrying a crank-pin 16 of a crank-shaft 14 that is driven by a journal 50 and preferably supported by bearings 10, 12 in end covers 6, 8 for the casing, and the crank-pin being furnished with a freely rotatable sleeve 38 that engages with the vanes so as to form a plurality of chambers I--IV of variable volume. In operation, the working fluid, e.g. atmospheric air, enters the chambers whose volumes are increasing through a bore 42 and an annular groove 40 in the end cover 6, and an arcuate slot 39 in the web 20, said fluid being subsequently discharged from these chambers when their volumes are decreasing through an arcuate slot 44 in the web 22 and an annular groove 44 in the end cover 8 communicating with a pipe or hose connecting-piece 48. In a first modification, Figs. 3 and 4 (not shown), the slots 39, 44 are located in the web 22 at different radii, the bore 42 and groove 40 being situated in the adjacent end cover 8 radially beyond the groove 46, which is separated from the groove 40 by a sealing ring (54) in said end cover engaging with the web 22. In a second modification, Fig. 5 (not shown), the crank-shaft 14 is replaced by a straight shaft (60) carrying an eccentric (62) in place of the crank-pin, the webs 20, 22 being retained. The crank-shaft 14 may be supported by the bearings 10, 12 as aforesaid, or a single bearing (not shown) at one end thereof; and the sleeve 38 may be dispensed with. The blades 28, 30, 32, 34 may be made of spring steel or graphitic carbon, and each of them may be constituted by a plurality of separate laminae (not shown). The sleeve 38 may be made of anti-friction material e.g. graphite or P.T.F.E., and the blades may be provided with a coating of P.T.F.E. on their faces adjacent the sleeve.
Patent GB-445291-A (GB)
Title: Improvements relating to vehicles
IPC: B62D33/027
Filed: 1934-10-04
Abstract: 445,291. Vehicle doors. FISHER, G. L., 561, Old Kent Road, London. Oct. 4, 1934, No. 28478. [Class 108 (i)] In vehicles provided with a tail gate hinged about its upper edge the hinge is, or is adapted to be, displaced away from the vehicle body so as to provide an adequate load-discharge opening when the gate is released. Fig. 1 shows the hinge 3 formed at the top of the upwardly inclined rear edge of the vehicle whereas in Fig. 2, the hinge 3 is displaceable to the rear on telescopic tubes 5 by the movement of the load which is displaced by a moving floor 6, movable partition or by other means.
Patent GB-927204-A (GB)
Title: Improvements in or relating to horticultural and agricultural implements
IPC: A01D34/00
Filed: 1959-08-21
Abstract: 927,204. Agricultural implements. A. E. FURNISS. Aug. 21, 1959, No. 28577/59. Addition to 797,245. Class 6(1). Apparatus to enable power driven implements to operate along a spiral path without an operator comprises a drum 1 rotatably mounted on a shaft 4, means for securing the drum against rotation on the shaft and means for firmly locating the drum relative to the ground. As shown a collar 7 is attached to the lower flange of the drum and forms a dogclutch with a collar 8 attached to a base member which as shown comprises a vehicle wheel 16. The shaft 4 is provided with a handle 5 and a collar 6 which on vertical movement of the shaft engages the underside of the upper flange of the drum to raise it so that it may be rotated.
Patent GB-422839-A (GB)
Title: Protective arrangements for wattless current compensated electric machines
IPC: H02H7/09
Filed: 1934-10-05
Abstract: 422,839. Switching systems. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Oct. 5, 1934, No. 28581. Convention date, Oct. 5, 1933. [Class 38 (iv)] [See also Group XXXVII] When a machine 2 or apparatus is disconnected by the opening of a switch 3, a condenser 5 or other wattless current compensator is disconnected from 2 at switch 4 in order to avoid excess voltages in the latter due to self-excitation. Switch 4 may be operated either by closure of back contacts 8 or by operation of an excess-voltage timelag relay 9.
Patent GB-647222-A (GB)
Title: Thermosetting polyarylbiguanide-fomaldehyde resins
IPC: C08G12/14
Filed: 1947-10-27
Abstract: Thermosetting polyarylbiguanide - formaldehyde resins are formed by reacting 1 mol. dicyandiamide with the reaction product of 1 mol. primary aryl or secondary di-aryl or alkyl-aryl amine and 1 mol. formaldehyde, and treating the thus formed polyarylbiguanide resin with at least 1 mol. formaldehyde.  If excess amine or aldehyde is employed in the first step, it should be removed from the equimolar condensation product before further treatment with dicyandiamide. Suitable amines may be represented by the formula <FORM:0647222/IV (a)/1> in which R represents hydrogen, alkyl or aryl, and X1 and X2 represent hydrogen, alkyl, aryl, halogen, halogenated alkyl, alkoxy, aryloxy or nitro groups and X2 may be a portion of a condensed ring system, e.g. naphthalene or quinoline. Amines mentioned are aniline, a -naphthylamine, b -naphthylamine, 2-toluidine, 3-toluidine, xylidine, 2-anisidine, 3-anisidine, 2-phenoxyaniline, 3-phenoxyaniline, 2-aminodiphenyl, 3-aminodiphenyl, 2-chloroaniline, 3-chloro-2-toluidine, 2,5-dichloroaniline, 2-nitroaniline, 3-nitroaniline, N-ethyl-5-nitrotoluidine, N-methyl-2-nitroaniline, diphenylamine, 2-nitrodiphenylamine, and 2-chlorodiphenylamine.  A compound yielding formaldehyde, e.g. trioxymethylene, para-formaldehyde or methylol may be employed.  Halogenated amines produce resins particularly stable to light and useful for treating textiles.  In the initial reaction the amine is preferably employed as the salt of an acid and heating is unnecessary.  The reaction with dicyandiamide is preferably carried out under reflux, and the product precipitated from solution by addition of alkali.  The final reaction with formaldehyde is also preferably carried out with the polyarylbiguanide resin in the form of a salt, at a temperature of about 50 DEG  C.  In examples: (1) aqueous 3-chloro-2-toluidine hydrochloride is reacted with formaldehyde in an atmosphere of nitrogen.  Dicyandiamide is added and the mixture refluxed.  Alkali is added to precipitate the polymer, which is dried, dissolved in dilute acetic acid and reacted with formaldehyde; (2) aniline is employed as the amine in the initial reaction; (3) 6-chloro-a ,a ,a -trifluoro-3-toluidine was used as the amine.  The products are useful for shrink-proofing or crease-proofing textiles, for rendering cotton substantive to wool dyes or resistant to mildew, as adhesives, or for increasing the wet strength of paper.  Specifications 572,829, 589,782 and 647,220 are referred to.ALSO:Thermosetting polyarylbiguanide-formaldehyde resins (see Group IV (a)) applied as aqueous solutions to textiles which are then dried and baked.  In an example a resin is prepared from 3-chloro-2-toluidine, dicyandiamide and formaldehyde and applied to woolen fabric to prevent shrinkage, or to cotton yarn to make it receptive to woollen dyes.  In another example the amine employed was 6-chloro-a ,a ,-trifluoro-3-toluidine and the resin was used for crease-proofing cotton muslin and rendering it resistant to ultra-violet light.
Patent GB-254170-A (GB)
Title: Improvements in or relating to stocking guards or protectors
IPC: A41D17/00
Filed: 1925-11-13
Abstract: 254,170. Chambers, C. F. M. Nov. 13, 1925. Addition to 246,685. Gaiters. - The invention of the parent Specification is modified by the addition of a portion a<1> for covering the calf of the leg, this portion either being integral with the remainder a of the protector or it may consist of a triangular piece detachably fastened at one corner to the top of the part a. The portion a<1> is provided with straplike extensions terminating in fastenings b<1> similar to those on the main part.
Patent GB-465567-A (GB)
Title: Improvements in or relating to microscopes
IPC: G02B21/08
Filed: 1936-10-22
Abstract: 465,567. Microscopes. LEITZ GES., E. Oct. 22, 1936, No. 28762. Convention date, Dec. 21, 1935. [Class 97 (i)] A microscope has a hollow stand containing at least one lighting shaft for illuminating the stage. Preferably the stand comprises three feet, each of which, together with the supporting column, is formed as a lighting shaft, an adjustable reflector being provided at the common point. As shown, the hollow stand 1 and the feet 2, 3, 4 meet in a point where a mirror 13, rotatable by the knob 14 is mounted. This mirror can be turned to receive natural light from the mirror 12 mounted on the sleeve 16 inserted in the foot 4, to reflect it to the adjustable mirror 11 and through the lens 31 to the condenser 10 for light or dark field illumination by transmitted light. Alternatively it may be turned to receive light from the lamp 24 mounted in the foot 3, with a blue glass disc 32 to produce artificial daylight. The illumination may also be carried out by the lamp 5 in conjunction either with the lens 29 and the mirror 13 for illumination by transmitted light or with the lens 28, the adjustable mirror 9 and the fitting 19, 20 for illumination by incident light. The shutter 27 may be turned to cut off the light from either direction at will. The lamp 5 is mounted on a detachable sleeve which may be replaced by the lens 18 and mirror 6, Fig. 4, for illumination by an external source such as an are. The lamp 5 and lenses 28, 29 are surrounded by a sleeve having ventilating holes 8. The fitting 19, 20 may be replaced by a rotatable nosepiece. The focusing adjustment 25, 26 is preferably mounted beneath the stage so as not to be impeded by the enlargements of the feet.