baber/WOPTO huggingface dataset:
Patent GB-558343-A (GB)
Title: Improvements relating to pulse modulation communication systems
IPC: H03K7/04
Filed: 1942-10-16
Abstract: 558,343. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd. (International Standard Electric Corporation). Oct. 16, 1942, No. 14510. [Class 40 (v)] A time-modulated pulse signalling system utilizes pairs of short pulses to mark the beginning and end of a time interval, and the signal voltage advances (or retards) the " beginning" pulse and retards (or advances) the " end " pulse. As shown in Fig. 3, a sine-wave of pulse frequency (say 25 kc.) is applied in push-pull to the grids S of a pair of valves 13, 14. The earth tapping between the grids S is not symmetrically situated so that the rectified pulses appearing across the common cathode resistance 16 are alternately strong and weak as indicated by the full lines 20, 21 in Fig. 4. The signal voltage applied through a transformer 18 in push-pull to the grids G varies the strength and steepness of the pulses in opposite directions as indicated in dotted lines in Fig. 4. The amplitude-modulated pulses of Fig. 4 are applied to the circuit 25 of a grid G2 of a valve 28 forming with a valve 27 a multivibrator pair. The anode of valve 27 is coupled by a condenser 29 to the grid G2, and the valves have a common cathode resistance 32. The valve 28 is caused to pass anode current periodically by applying blocking pulses of the doubled frequency, 50 kc., to the grid G1 of the valve 27. After a variable interval determined by the slope of the Fig. 4 pulses, the valve 28 is blocked with the result that the anode current of the valve 28 has the form shown in Fig. 5, with the rising edge 30 occurring at regular intervals, and the falling edge 33 at intervals dependent on the modulated pulses of Fig. 4. The Fig. 5 pulses are taken from the anode of valve 28 to a differentiating circuit giving positive and negative short pulses 35, 34, Fig. 7, of which the negative fixed pulses are eliminated by a rectifier, and the positive variable pulses are amplified and used to amplitude-modulate a shortwave carrier. A second communication channel may be afforded by amplitude-modulating the pulses by a second signal before they are imposed on the carrier. At the receiving station, the pulses are passed through a limiter to a resonant circuit tuned to the pulse frequency or to an odd harmonic thereof, the time-modulation being thus converted into an amplitude-modulation of the wave arising in the resonant circuit. The second channel signal is received by passing the pulses without limitation of amplitude to an ordinary low-frequency stage.
Patent GB-576879-A (GB)
Title: Hair waving and curling devices
IPC: A45D2/28
Filed: 1944-07-29
Abstract: 576,879. Hair curlers. JARRETT, RAINSFORD & LAUGHTON, Ltd., and LAUGHTON, G. A. July 29, 1944, No. 14531. [Class 131] In a hair curler of the 'kind having two hinged hollow members 10, 11 opening scissor fashion and a surrounding rectangular wire loop 13 all pivoted at 12 the ends of the members 10, 11 remote from the pivot are reduced in size the projecting ends 18 being received in the bore 20 of the slide 19 arranged on the narrowed bay 21 of the loop 13. The members 10, 11 are perforated and are preferably part cylindrical and tapered away from the pivot and like the slide 19 are preferably moulded from artificial resin, the slide 19 being made with two U-section lips 22 on its side edges (see Fig. 7) which can be placed on the parallel parts of the wire frame 21 and then clinched with a heated tool or moulded with holes in position to receive the wire of the bay 21.
Patent GB-685619-A (GB)
Title: Improvements in or relating to threshing machines
IPC: A01F7/00
Filed: 1949-05-31
Abstract: 685,619. Threshing machines. CLARKE C. J. and BROOME, J. H. May 30, 1950 [May 31, 1949]. No. 14536/49. Class 58. In a threshing machine of the kind comprising rollers 3 between which the crop is passed, preferably crop end first, and a rotating beater 6 located in juxtaposition to the exit end of the rollers and which is driven at a greater speed than the rollers, the rotating beater comprises a drum fitted with a plurality of beater elements 7 which beat the crop end of the " straw " as it emerges from the rollers, the elements extending tangentially or substantially tangentially from the drum and being arranged so that their outer ends trail behind their anchored ends, and means are provided for separating the seed from the chaff and " straw ". As shown the crops are fed between conveyer belts 2 crop end first to the crushing rollers and on emerging therefrom are threshed by the beater 6 rotating at a greater speed than the rollers, so that the seed, chaff and " straw fall on to a shoot 4 and pass to a reciprocating sieve 5 from which the " straw " is removed by raking means 10 whilst the seeds and chaff pass through to a hopper 9. From the latter seed and chaff are carried by an air current through pipe 12 and discharged into a winnowing chamber 14 where the chaff is blown to the outlet 17 and the seeds fall down pipe 15 into the inner of one of two or more inclined rotary sieves 19, 20 within a non- perforated outer casing 21, are separated and discharged at 19a, 20a or 21a according to size.
Patent GB-128911-A (GB)
Title: Process for the Manufacture of Esters of Ethylenic Halogenhydrins.
IPC: C07C205/57
Filed: 1919-06-07
Abstract: 128,911. Soc. Chimique des Usines du Rh¶ne, anciennement Gilliard, P. Monnet, et Cartier. June 26, 1918, [Convention date]. Halogenethyl esters of the formula R.COOCH2 CH2X (R=alkyl or aryl, X=halogen) are prepared by the reaction of acyl halides with ethylene oxide, for example by passing gaseous ethylene oxide through heated acyl halides. Examples are given of the preparation of #-chlorethylacetate, #-chlorethylchloracetate, #-bromethylacetate, #-chlorethylbenzoate, and #-chlorethylp - i-iitrobenzoate. The Specification as open to inspection under Sect. 91 (3) (a) states that the process may be carried out by heating the reagents under pressure. This subject-matter does not appear in the Specification as accepted.
Patent GB-740065-A (GB)
Title: Improvements in or relating to carrier-telegraph receivers
IPC: H04L25/04
Filed: 1954-05-18
Abstract: 740,065. Code-telegraphy. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 18, 1954 [May 21, 1953], No. 14561/54. Class 40 (3). In a carrier-telegraph receiver in which the telegraph pulses are applied to the input circuit of a pulse regenerator 9 through a signal pulse channel 6 comprising a detector 7 and a delay network 8, and also through a bias-voltage channel 11 comprising an input detector 12 and a delay network 17 arranged to produce bias voltages leading and lagging in time with relation to the pulses derived from the signal channel, the output impedance of the input detector 12 in the channel 11 is constituted by the series combination of a resistor 26 and a parallel-resonant circuit 25. The signal pulses appear at the end 22 of a resistor 23 and the bias voltages of reversed polarity at the lower end 21, the leading bias voltage being derived from a detector 16 connected to a tapping 27 on the resistor 26. The output impedance of the channel 11 comprises a capacitor 20 and a resistor 19 having a time constant less than the duration of the shortest signal impulse, and the frequency of the resonant circuit 25, approximately twice the signalling frequency, is, for example, between 60 c.p.s. and 80 c.p.s.
Patent GB-1076435-A (GB)
Title: Centrifugal pump
IPC: F04D1/12
Filed: 1966-04-01
Abstract: 1,076,435. Centrifugal pumps. W. L. KING. April 1, 1966 [April 12, 1965], No. 14601/66. Heading F1C. In a centrifugal pump having a rotary casing, liquid from a stationary inlet pipe 23, Fig. 1, passes into a central recess 26, along equally spaced radial grooves 27 in the casing side wall 13, and through ports 33 in a plate 29 into a main chamber.34 wherein the liquid is collected by a pick-up arm 35 connected to a discharge pipe 38. The grooves 27 may be divided longitudinally by ribs (28), Fig. 5 (not shown), with each division communicating with a port (33). Four of the ribs may extend to the rotational axis to provide central vanes (28') to assist pumping. The ports 33 are inclined in the direction of rotation, and the arm 35 extends in opposition to the direction of rotation preferably approximately 90 degrees around the periphery of the chamber 34. The radial portion of the arm 35 is streamlined. Seals 22, 31 are provided. The pump is supported by a pair of standards 10, 11 and is driven through a V-belt 17.
Patent GB-702880-A (GB)
Title: Improvements in or relating to lightweight panelling for doors or the like
Inventor: WOOLF HARRIS
IPC: E06B3/70
Filed: 1952-06-10
Abstract: 702,880. Doors ; panels. BRITISH PLYWOOD MANUFACTURERS, Ltd. June 10, 1952, No. 14621/52. Classes 20 (3) and 87 (1). [Also in Group XXIII] A door or a panel has a core comprising two series of intersecting slats, each slat 1 of one series having slots 3 to receive the slats 2 of the other series, the slats 2 being formed with portions of reduced width 6 which enable it to be turned from the position shown at 2a to an interlocking position as shown at 2b. The slots 3 may be at a slight angle to the central axis of the slats 1. The slats may be made of wood or a synthetic material. The core is secured in a supporting frame and two pieces of sheet material, for example plywood, are then attached to the frame and the core. The supporting frame may be omitted when the panel may have open edges.
Patent GB-650996-A (GB)
Title: Improvements relating to the treatment of rags
IPC: D06M11/54
Filed: 1948-05-31
Abstract: Woollen rags are prepared for grinding or garnetting by treating them firstly with an oxidizing agent capable of dissolving part of the wool fibre surface, then immediately with an acidic or acidified reducing agent and subsequently with alkaline and lubricating media to bring the treated wool fibre surface into a slippery condition and to prevent the dissolved wool substance which is re-deposited on the fibre from setting in a hard film on the fibre on drying.  The treatment enables the fibres to slip more easily, one upon the other, thus reducing frictional resistance during subsequent pulling, carding, or other methods of disintegration.  Specified oxidizing agents are solutions of permanganates, hypochlorites and peroxides. Specified reducing agents are hyposulphites and bisulphites.  The rags may be steeped for 15-30 mins. in an aqueous solution of 0.4 per cent sulphuric acid and 0.2 per cent potassium permanganate, and then for 15-30 mins. in an aqueous solution of 0.6 per cent sodium bisulphite.  The subsequent stage of the treatment may be carried out by soaking the rags in aqueous alkali, e.g. ammonia at a pH not less than 8, and then steeping them in an emulsion of oil, an aqueous solution of a water-soluble oil, or an aqueous solution of glycerine. Alternatively, the subsequent stage may be effected by soaking the rags in an aqueous solution containing an alkaline soap and glycerine or water-soluble oil.  The treated rags may readily be pulled, carded, garnetted or otherwise reduced to fibres suitable for making shoddy or for making flocks for furniture and bed fillings. Specification 586,020 is referred to.
Patent GB-330884-A (GB)
Title: Improvements in or relating to rotary pump machines
IPC: F01C21/08
Filed: 1929-02-18
Abstract: 330,884. Eyston, G. E. T. Feb. 18, 1929. Fixed-abutment type. -The vanes of a rotary pump bear at their .outer edge parts on the inner periphery of revoluble rings centrically mounted in the casing and are retained against inward movement by the engagement between such outer edge parts and the rings. In the construction shown the rings are formed as flanges m on end discs n and engage notches d' at the outer edges of the vanes d, the outer parts v of which prevent inward movement by bearing externally on the ring flanges m. Shoes t may be fitted to the vanes where they bear on the inner periphery of the rings m. The rings may have an inwardly extending shallow flange to hold the shoes t in position and to retain lubricant. The rotor slots are cut away as at y so that the vanes have bearing therein only at their ends as described in Specification 308,640. The rings may be of slightly smaller diameter so that the vanes have a clearance with the casing and may, be positively driven as described in Specification 274,944. The rings are supported on ball bearings l in recesses k in the casing end covers; shields r retain lubricant in the recesses k.
Patent GB-1497149-A (GB)
Title: Quaternary ammonium salts
IPC: C07C209/12
Filed: 1975-04-10
Abstract: 1497149 Indanylaminoalkyl quaternary ammonium salts ELI LILLY & CO 10 April 1975 [12 April 1974] 14664/75 Heading C2C Novel compounds of Formula I wherein n is 2 or 3; R 1  and R 2  each independently are C 1 -C 4  alkyl, or R 1  and R 2  together with the adjacent nitrogen atom are pyrrolidino, piperidino or morpholino; R 3  is hydrogen, C 1 -C 3  alkyl, or C 2 -C 5  alkenyl; R 4  is hydrogen, methyl, methoxy, trifluoromethyl, or chloro; and X is a pharmaceutically acceptable anion are prepared by reacting a compound of Formula II  wherein Z is halogen or -NR 1 R 2  with a tertiary amine or an alkylating agent. Pharmaceutical compositions in conventional forms for oral or parenteral administration having local anaesthetic activity and use in treating cardiac arrhythmia comprise an above novel compound and a carrier or diluent.
Patent GB-402441-A (GB)
Title: Apparatus for the transmission and control of mechanical energy
IPC: F16H39/01
Filed: 1932-05-24
Abstract: 402,441. Transmitting power. BURT, R. C., 327, South Michigan Avenue, Pasadena, California, U.S.A. May 24, 1932, No. 14758. Convention date, May 25, 1931. [Class 8 (ii).] Power-transmitting apparatus suitable for driving vehicles comprises an internal-combustion engine 31 which drives compressors 35, 39 connected to high and low-pressure tanks 38, 40. The compressed air, after being heated by the exhaust gases, is led to an expansion engine 16 from which it exhausts to the low-pressure tank. The pressures in the high and low-pressure tanks are maintained automatically constant, the ratios of the pressures being such that the work per stroke of the compressor 39 is a maximum. For air this ratio is 3.2. The engine 31 runs at either full torque and a speed determined by the amount of air required to drive the airmotor 16 or at minimum speed and no load. The compressor 35 takes air from the atmosphere through a filter 36 and a throttle controlled by the pressure in the reservoir 38. The compressor 39 takes air from a connection to the reservoir 38 and exhausts to the reservoir 40. When the pressure herein rises to, say, 750 lbs. per square inch, the diaphragm 43 is affected and the throttle 44 of the carburetter 33 and the value 45 of the compressor 39 are closed. When the pressure in reservoir 38 reaches the desired value, say 250 lbs. per square inch, a diaphragm 71 closes the intake of the compressor 35. Safety valves are provided on the connections for the reservoirs respectively. The expansion engine supply valve 15 is provided with a bye-pass containing a check valve 25. This provides regenerative braking for the engine 16 which then acts as a pump with the valve-gear reversed.
Patent GB-696874-A (GB)
Title: Apparatus for making linked products
IPC: A22C11/10
Filed: 1952-06-13
Abstract: 696,874. Sausages. AMERICAN VISCOSE CORPORATION. June 13, 1952 [June 25, 1951], No. 14948/52. Class 28 (ii). A length of sausage 33 in travelling 'on the edge of a rotated plate 3 is formed into linked sausages by pairs of cam actuated jaws 27, 28 which pinch and hold the tube at spaced points while co-operating pairs of roughened plates 36, 37 moved in opposite directions engage and rotate the sausage to twist it at the pinch points. The pinching jaws 27, 28, Fig. 3, are pulled together by a spring 34 when permitted to do so by a fixed cam surface 31 on a disc 32 engaging a roller 30 at the lower end of a lever 17a. The movement of the jaws 27, 28 is equalized by sector gears 24, 25. The degree of pinch is set by adjustable screws 71. The twisting plates 36, 37, Fig. 4, are coupled together to move up and down by rack and pinion 44 through a fixed cam groove 40, the cam follower 39 contacting this groove during the rotation of the mechanism as mounted on the rotated plate 3. When the pinching jaws are opened again by the cam surface 31 the twisting plates. 37 are also spaced apart by a rocking cam 58, 59, Fig. 4, operated from links 63, 66 coupled to one lever 7a of the pinching mechanism. The linked sausages are wound up on a drum 70 or may be passed into baking ovens. Specification 696,864 is referred to.
Patent GB-725615-A (GB)
Title: Improvements relating to sectional mattresses
IPC: A47C27/00
Filed: 1953-05-29
Abstract: 725,615. Sectional mattresses. BENDELL, A. D. June 5, 1953 [May 29, 1953], No. 14966/53. Class 52 (4). The sections 1, 2 of a sectional mattress are secured together by sliding-clasp fasteners 5, 6, the tapes 3, 3a, 4, 4a being secured along the meeting edges of the sections.
Patent GB-916640-A (GB)
Title: Improvements in self-regulating reciprocating piston pumps, in particular for the injection of fuel into internal combustion engines
IPC: F02M41/06
Filed: 1959-05-01
Abstract: 916,640. Fuel injection pumps. BESSIERE, P. E. May 1, 1959 [May 19, 1958], No. 14996/59. Class 102(1). A fuel injection pump comprises a rotating shaft 2 which houses a spring-loaded metering piston 41 dividing a cylinder 42 into chambers 43, 48. The chamber 43 communicates with a radial cylinder pump 5 through conduit 1 which contains a non-return valve 44 while the chamber 48 communicates with a radial passage 52 which registers in turn with outlets 51 as the shaft rotates. Radial passages 46a, 50 lead from the chambers 43, 48 respectively and, through a number of passages 46b in the body, these chambers are interconnected for certain angular positions of the shaft by conduits 46c, 46d, throttle 54a, and conduits 46e, 46f, the throttle 54a being varied in accordance with engine speed by the delivery of a gear pump 58 acting on a piston portion 54. When the connection between chambers 43, 48 is closed, the pump 5 delivers fuel through conduit 1 to chamber 43 causing the piston 41 to deliver fuel in chamber 48 to an outlet, the end of the stroke of piston 41 being determined by the opening of a by-pass conduit 64. When the connection between chambers 43, 48 is open, the pump 5 is on its suction stroke and fuel is transferred from chamber 43 to chamber 48 under the return movement of the piston 41; the speed of this return movement being governed by the size of the throttle 54a. When the speed of the engine and, hence the shaft 2, exceeds a predetermined value the connection between these chambers is closed before the piston 41 completes its return stroke and consequently the fuel subsequently delivered from chamber 48 is reduced. The pump 5 may be formed by pistons co-operating with a stationary cam 8 or the cam may be formed on the shaft 2 with the pistons working in cylinders formed in the body.
Patent GB-454039-A (GB)
Title: Improvements in or relating to pipe joints
IPC: F16L21/04
Filed: 1935-05-23
Abstract: 454,039. Pipe joints. SOC. ANON. DES HAUTS-FOURNEAUX & FONDERIES DE PONT-A-MOUSSON, Pont-a-Mousson, Meurthe & Moselle, France. May 23, 1935, No. 15037. Convention date, May 25, 1934. [Class 99 (i)] Fluid-tightness in a spigot-and-socket joint for pipes 1, 2 is secured by a rubber &c. packing ring 4 which is compressed within the space between the pipe 2 and the socket 3 of the pipe 1 by a gland 5, pressure being applied to the gland by bolts 11, Figs. 1 and 3. The bolts extend through or engage the gland and are in engagement with a connecting ring 8 which is formed with annularly spaced projections 9 adapted to coact with lugs 7 on the inside of the socket 3 in a bayonet-joint manner. Means, such as stops on the ring 8, may be provided for limiting rotation of said ring. In a modification, Fig. 6, the ring 8 is omitted and the bolts 11 are provided with U-shaped heads 13 to engage the lugs 7 ; alternatively a number of hooks 20, Fig. 11, are used. Fig. 12 shows a construction in which the lugs 7 are located on the outer surface of the socket. Several other modifications are also described. The Specification as open to inspection under Sect. 91 comprises also a joint, Fig. 11 (Cancelled), in which the gland 5 and ring 8 are in screwthreaded engagement at 16. This subject-matter does not appear in the Specification as accepted.
Patent GB-1284027-A (GB)
Title: Improvements in or relating to guiding devices
Inventor: MOWAT GEOFFREY CREIGHTON
IPC: G01S13/931
Filed: 1970-03-31
Abstract: 1284027 Echo ranging devices; transistor multivibrator circuits G C MOWAT 31 March 1970 [31 March 1969] 15160/70 Headings H3T and H4D  In a guiding device operating on the pulseecho principle, for indicating to a user the distance of a reflecting object, confusion between echoes from objects at various distances is avoided by making the indication responsive to only the first echo following a pulse transmission. As applied to an ultrasonic blind-aid, the Fig. 1 system is housed in a cane. Oscillator 2 is controlled by astable multivibrator 10 to produce periodic pulses of ultrasonic carrier frequency for driving directional transducer 4. Echoes received by transducer 6 are amplified at 7, 8, 9 and used as synchronizing pulses for trigging the multivibrator. The multivibrator is triggered by the first echo following a transmission and remains in its triggered state, where it is insensitive to any immediately following echoes, for a period determined by the circuit timeconstants; it then returns to its original state and in so doing initiates the next transmission pulse. At the transmission instant, shunt transistor 13 attenuates any triggering input to the multivibrator, thereby preventing false triggering by any non-reflected pulse pro. pagating directly from transducer 4. An electromechanical vibrator 12 which can be touched is energized at the multivibrator frequency, which frequency increases as a reflecting object is approached. Transducer 4 directs energy over a beamed path which may be changed by a range setting device (no details given).