baber/WOPTO huggingface dataset:
Patent GB-990680-A (GB)
Title: Improvements in noise cancellers for signal processing systems
Inventor: HOWELLS PAUL WILLARD
IPC: H04B1/12
Filed: 1961-06-02
Abstract: 990,680. Radio receiving systems; radar; aerials. GENERAL ELECTRIC CO. June 2, 1961, No. 20084/61. Headings H4A, H4D and H4L. A noise canceller for a signal processing system comprises a main signal transmission channel and an auxiliary signal transmission channel, means for adjusting the amplitude and phase of interference signals in the auxiliary channel to equal the amplitude and phase of interference in the main channel, and means for subtracting the adjusted signals in the auxiliary channel from the signals in the main channel. Fig. 1a shows a circuit for reducing the effect of noise jamming in a radar receiver. Signals from a directional aerial 10 are mixed with a local oscillation in mixer 14 and passed through a subtraction circuit 22 and a bandpass filter 23 to an output terminal. Jamming signals from a non-directional aerial 12 are mixed in unit 18 with a local oscillation offset from that of the main channel. One output of mixer 18 is fed through a band-pass filter 27 to a mixer 24 where it is mixed with the output of the main channel; the output of mixer 24 is passed through a narrow band filter 26 to provide a signal at a frequency equal to the difference between the two intermediate frequencies and having an amplitude proportional to the average power of the jammer. The phase of this signal is adjusted to that of the main channel by mixing it with a second output of mixer 18 in mixer 28. The output of mixer 28 is introduced to the radar I.F. channel through subtraction circuit 22 forming a non-linear closed loop providing automatic gain adjustment so that the residual jamming signal approaches zero in the radar I.F. channel. The speed of response of the system is dependent on the loop gain and the bandwidth of filter 26. Since loop gain is proportional to average power the loop cancels jamming signals which have high average power, while it is relatively insensitive to echoes which have low average power. In a modification, Fig. 2 (not shown), aerial 12 is replaced by three non- directional aerials equally spaced in a linear array for side lobe cancelling. The outputs of the aerials are respectively mixed with local oscillations, the frequencies of which form an arithmetical progression, and the sum of the outputs of the mixers replaces the output of mixer 18 in Fig. 1a. The filters 23 and 27 are omitted and filter 26 is replaced by three narrow band filters in parallel. The pattern of the non-directional array is caused to scan by phasing of array outputs.
Patent GB-1309334-A (GB)
Title: Thread gauging apparatus
IPC: B65H63/06
Filed: 1971-04-19
Abstract: 1309334 Gauging device SCHWEITER ENG WORKS Ltd (MASCHINENFABRIK SCHWEITER AG) 19 April 1971 [27 Jan 1970] 20102/71 Heading G1M [Also in Division D1] A gauging device for thread comprises a thread guide pin 3 and an adjacent parallel knife 4. The knife is carried by a holder 5 movable by a sliding cam 9 and lockable by a screw 7, alternatively means may be provided to lock the cam 9. The cam 9 is loaded by a spring 16 and has a scale 14 to indicate the separation d of the knife 4 and the pin 3. The cam 9 may alternatively be a rotary disc with a slot or may be replaced by e.g. spindles worm gears or a rack and pinion provided a motion reducing function is performed.
Patent GB-422850-A (GB)
Title: Improvements connected with fuel injection pumps for internal combustion engines
IPC: F02M59/24
Filed: 1933-07-17
Abstract: 422,850. Fuel - injection pumps. SHELDRICK, W. A., 12, Church Road, Canton, Cardiff. July 17, 1933, No. 20120. [Class 102 (i)] A fuel-injection pump comprises a steel liner 9 housed in the pump body, and surrounding a cylinder 13. Ports 10 in the liner align with ports 15 in the reduced end of the cylinder, and form the suction passages. The plunger 16 is provided with a longitudinal bore 17, connected to radial ports 18 the outer ends of which enter slots in the circumference of the plunger. A cup-shaped valve 19 surrounds the plunger and is adjusted axially by a worm, segment and lever to vary the end of delivery, the fuel being byepassed directly into the suction ports.
Patent GB-1166974-A (GB)
Title: Method of Producing omega-Chloroalkanoyl Chlorides
Inventor: GERSHENOVICH ABRAM IOSIFOVICH
IPC: C07C51/353
Filed: 1968-04-29
Abstract: 1,166,974. #-Chloroalkanoyl chlorides and esters. A. I. GERSHENOVICH, and L. I. LOMILINA. 29 April, 1968, No. 20147/68. Heading C2C. #-Chloroalkanoyl chlorides having the formula Cl-(CN 2 CH 2 )nCO-Cl, where n is an integer, are obtained by heating oxalyl chloride and ethylene together in the presence of a radical initiator, e.g. azo-bis-isobutyronitrile. The acid chlorides produced may be reacted with excess ethanol to give the corresponding ethyl esters of the formula
Patent GB-1352393-A (GB)
Title: Yarn handling apparatus
IPC: B65H54/34
Filed: 1971-04-19
Abstract: 1352393 Transfer tails LEESONA CORP 19 April 1971 [26 Jan 1970] 20223/71 Heading D1J Apparatus to wind a package with a tailing end comprises a first portion on which the package is wound and a second portion on which the tail is wound the second portion projecting axially from the first. A guideway of predetermined length is formed on the second portion and a yarn, engaging means is provided to seize the yarn as it commences entry into the guideway. The guideway may be a spiral groove 90 and the yarn engaging means a spring clamp 48. A blade 64 protected by a spring loaded guard 58 is provided to sever the yarn 18 as it passes. During the winding of the tail the yarn passes over a guide surface 94 from which it slips to be caught by a traverse guide to wind the package on a core 30. The core 30 is held on a chuck with expanding blades which are interlinked with the clamp 48 to release the yarn end when the core is released. The yarn is conveyed to the winding apparatus by a manually movable transfer roll as described in prior Specification 1237245.
Patent GB-677231-A (GB)
Title: Mould or die for the casting or moulding of spools for electrical tuning coils, coupling coils and choking coils for radio receivers
IPC: B29C33/00
Filed: 1948-07-29
Abstract: 677,231. Spools. HAUERSLEV, W. July 29, 1948 [Aug. 16, 1943], No. 20243/48. Class 120(iii) [Also in Group V] A spool for electrical tuning coils, coupling coils and choke coils, moulded (see Group V) from plastic material, e.g. polystyrol, has annular grooves on its outer surface for the reception of the wire, these grooves being interrupted by longitudinal slots which allow the wire to be passed axially from one groove to the next. Each groove may have shoulders 14 on which rests a thick wire 11, thin wire 12 being accommodated in the bottom of the groove.
Patent GB-712020-A (GB)
Title: Devices for discharging fruit, bulbs and similar articles from a travelling conveyor
IPC: B07B13/00
Filed: 1952-08-12
Abstract: 712,020. Conveyers, JANSEN, A. W. Aug. 12.. 1952, No. 20270/52. Class 78 (1) In apparatus for handling fruit and like easily damaged articles of .the kind including a continuous travelling conveyer, a series of bins arranged alongside the conveyers, and a series of flexible aprons arranged one in each bin for receiving the articles from the conveyer means are provided for periodically emptying the aprons into the bins. As shown, fruit which has been graded' on an endless belt 6 is discharged through shoots 1 corresponding to the various grades for delivery to boxes 2. The fall of the fruit is broken by aprons 5 one end of each of which is secured to an endless belt 3 which draws the aprons over fixed bars 8 so that, as the free ends of the aprons pass over the bars 8 and drop, the fruit is deposited into the boxes. Alternatively the aprons may be fixed at one of their ends to fixed bars parallel to the bars 8, the bars 8 being fixed to belt 3 so as to pass under the hanging aprons and periodically tip the fruit into the boxes
Patent GB-1473032-A (GB)
Title: Releasable fire-actuated links
IPC: A62C37/42
Filed: 1975-05-14
Abstract: 1473032 Heat actuated link F J McCABE 14 May 1975 [30 Aug 1974] 20273/75 Heading G1D [Also in Division E2] A heat actuated link for forming part of a fire fighting system, comprises a releasable member 18 and gripping means for retaining the member 18 when in a first configuration and for releasing the member 18 when in a second configuration, the gripping means comprising heat responsive means which causes the gripping means to move to the first configuration at a pre-selected ambient temperature, and to move to the second configuration in response to a pre-selected increase in ambient temperature, the heat responsive means comprising means for mechanically amplifying the response of the gripping means to the increase in ambient temperature.  In the embodiment shown, the heat responsive means comprises a serpentine bimetallic element 14, the free end of the element being provided with a bevelled pin 20 which, in the first configuration passes through an aperture in portion 26 of the retaining means to abut or substantially abut striker portion 57 and thereby retain the releasable member. The phantom configuration is taken up after a temperature rise, the temperature increase required being dependant upon the amount by which portion 30 overlaps portion 28, the larger the overlap the smaller the required temperature increase. The bimetallic element may, Fig. 4 (not shown) be enclosed, heating thereof being effected by a electric means, a spring contact thereof abutting the bimetallic element throughout heating thereof. The bimetallic element may vary in width in the manner shown in Fig. 1.
Patent GB-459459-A (GB)
Title: A process and apparatus for desiccating or drying liquid films
IPC: B01D1/22
Filed: 1935-07-16
Abstract: <PICT:0459459/III/1> <PICT:0459459/III/2> In the evaporation of fruit juice, milk, yeast cellulose and other liquid films on supporting surfaces by means of rapid gas currents, the gases are caused to impact directly against the film on the supporting surface and are mainly returned immediately from the film by deflection therefrom. As applied to a drum dryer in which the liquid is fed on to the drum 1 from a sprayer 8 and the dried material removed by a scraper 9, the gas currents issue from alternate channels 6<1>, of cross-section diminishing towards the drum, and deflect into the intervening channels 5, the former channels communicating with a pair of gas supply ducts 4, Fig. 4, arranged as concentric annuli at each end of the drum, and the latter channels communicating with an outlet pipe 10 offset at right angles thereto.  The channels are formed by a number of radially disposed walls 6, 7 occupying the space between the gas supply annuli 4, the whole being enclosed by a housing 3 concentric with the drum.  The channels 6<1> are closed at their upper ends by walls 12 and 11<1> and the channels 5 are closed at their sides by walls 11, 11<1>.  The channels 5 may be subdivided by means of a central wall disposed at right angles to the drum axis. In a modification, the annuli 4 are arranged as gas supply and withdrawal ducts respectively, the outlet pipe 10 being dispensed with.  In this modification, a cylindrical cover encloses all the upper ends of the channels.  Drying air may be sucked through the apparatus by means of a fan in the outlet pipe and the drum may be heated.  The supporting surface may be plane or curved other than cylindrically and may be stationary.
Patent GB-694733-A (GB)
Title: Improvements relating to screw and nut mechanisms
Inventor: HOLMAN HERBERT EDWARD
IPC: G05G1/00
Filed: 1950-08-18
Abstract: 694,733. Screw and nut gearing. ELECTRIC & MUSICAL INDUSTRIES, Ltd. Aug. 7, 1951 [Aug. 18, 1950], No. 20480/50. Class 80 (iii). In order to compensate for irregularities in the thread of a screw or nut device the complementary member is formed in three or more sections which are resiliently spaced. In Fig. 1 a nut member 2 comprises three thread sections 3 spaced apart by springs 9 within a cage 4. In Fig. 2 the screw comprises sections 13 spaced apart by rubber discs 16 on a shaft 12 and engaging an internal thread of a sleeve 11. The device is particularly applicable to high precision mechanism such as is required in a ruling or micrometer type measuring machine or the tuning device of an electro discharge apparatus.
Patent GB-258407-A (GB)
Title: Improvements in and relating to laminated springs
IPC: F16F1/26
Filed: 1925-08-17
Abstract: 258,407. Stott, J. H. Aug. 17, 1925. Laminated springs. - A clip is adapted to apply pressure over a considerable length of the plates so as to avoid tilting or rocking of the clip when bending of the spring occurs and the plates slide over one another. Two U-shaped clamps 5, 6 are placed saddlewise on the spring so as to leave a gap 10 when the securing bolts 8 are tightened up to apply the requisite amount of pressure to the leaves. One of the clamps may be tapered to fit the tapering end of a leaf. Specification 257,312 is referred to.
Patent GB-1128383-A (GB)
Title: Solution mining
Inventor: DAHMS JAMES BOWEN
IPC: E21B43/28
Filed: 1966-05-10
Abstract: 1,128,383. Solution mining. KALIUM CHEMICALS Ltd. 10 May, 1966, No. 20607/66. Heading E1F. Solution mining of a subterranean deposit involves forming boreholes down to the deposit so that the boreholes are spaced' from one another in both the direction of the strike and of the dip of 'the deposit, and causing mining cavities to be dissolved between adjacent boreholes in the direction of the strike rather than between adjacent boreholes in the direction of the dip.
Patent GB-727455-A (GB)
Title: Potentiometer
Inventor: HIME NORMAN STUART
IPC: H01C1/14
Filed: 1953-07-24
Abstract: 727,455. Potentiometer resistors. COLLINS RADIO CO. July 24, 1953, No. 20624/53. Class 37. A multiple and variable tap potentiometer comprises a plurality of resistance wires and independently adjustable rotary contacts mounted on a base-plate and protected by a cover-plate having openings giving access to the rotary contacts. In the example shown three spaced-apart resistance wires 11, Fig. 1, are mounted on an insulating plastic base-plate 10 and series-connected by links or jumpers 13, 14 positioned behind the plate 10, Fig. 3, together with rows of tapping tags or terminals 18. At each tapping location a pin 17, Fig. 2, penetrates the base 10 and is rotatable in a slot or opening in a corresponding tag 18 whereby a contact arm 20 may be turned to a different contact position along resistance wire 11 to vary the tapping voltage. To facilitate adjustment of arms 20 each pin 17 has a screw-driver slotted head 21 accessible through openings in the cover-plate 24. The heads 21 are of insulating plastic and may be disposed beneath the level of the cover-plate 24, as shown, Fig. 2. The wires 11 may have different resistance per unit length for each row of tappings. In use a high voltage is applied across the ends of the wires at 12, 12.
Patent GB-1487477-A (GB)
Title: Halidation of nonferrous metal values in manganese oxide ores
IPC: C22B47/00
Filed: 1975-05-15
Abstract: 1487477 Halidation of non-ferrous metals in manganese oxide ores DEEPSEA VENTURES Inc 15 May 1975 [24 May 1974] 20637/75 Heading C1A Manganese oxide ore is treated with the chloride, bromide or iodide of aluminium at a temperature of at least 50 C. to recover a non- ferrous metal halide reaction product comprising the corresponding manganous halide. The ore may be initially reduced to bring all of the manganese value to the divalent state, carbonaceous reducing agents or hydrogen being preferred. Ores exemplified are those containing mainly Mn and Fe together with minor amounts of Co, Ni and Cu, e.g. ocean floor nodule ore. The manganese oxide ore may be dehydrated prior to the reaction with the aluminium halide. Metallic manganese may be recovered from the substantially pure manganous halide obtained by reaction with a subhalide of silicon, aluminium or titanium; also obtained is the normal halide which if alumium trichloride may be reacted with the ore.
Patent GB-757027-A (GB)
Title: Improvements in or relating to transistor circuits
Inventor: COOKE-YARBOROUGH EDMUND HARRY
IPC: H02M3/338
Filed: 1953-07-24
Abstract: 757,027. Rectifying. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Oct. 25, 1954 [July 24, 1953], No. 20668/53. Class 38 (2). [Also in Group XL (c)] High voltage pulses are generated from a low voltage D.C. source 12 by passing a current through an inductor 11 feeding a transistor, the pulses occurring across an output coil 17. The transistor operates as a relaxation oscillator with coupling between windings 11, 14 in the collector and emitter circuits and a diode 15 arranged in the base lead. The circuit feeds a multiplier network with a stabilizer tube 5 supplying a Geiger-Muller tube 3. Output pulses are fed to the emitter circuit of backcoupled transistor 20 to produce amplified pulses in the collector circuit which operate over rectifiers 33, 34 a meter 36 indicating the rate at which pulses are fed to the transistor 20.
Patent GB-148898-A (GB)
Title: Manufacture of tanning agents and the application thereof
IPC: C14C3/08
Filed: 1920-07-10
Abstract: Synthetic tanning-agents are obtained (1) by coupling by means of appropriate atoms or groups, aromatic hydroxy compounds or their metal salts with aliphatic hydroxy compounds; (2) by similarly coupling aromatic compounds free from hydroxy groups with aliphatic hydroxy compounds; (3) by repeated coupling of aromatic compounds by means of aldehydes, phosphorus pentoxide, &c. to obtain products of high molecular weight and introducing acid groups to solubilize them. According to examples:-phenol is sulphonated by sulphuric acid, glycerine is added, and the mixture condensed with formaldehyde; naphthol sulphonic acid and glucose are heated with formaldehyde; cresol sulphonic acid is heated with glucose and formaldehyde; cresol sulphonic acid is heated with glucose and sulphur chloride; sodium 1-naphthylamine-5-sulphonate is heated with glucose and formaldehyde; naphthalene sulphonic acid is heated with glucose and formaldehyde; coal-tar phenols of boiling-point 185-200 DEG  C. are heated with sodium sulphite and formaldehyde, and the resulting tanning-agent is heated with glucose and formaldehyde; the same phenols are heated with sodium sulphite; formaldehyde, and sulphite-cellulose; p-dioxydiphenylmethane is sulphonated by sulphuric acid and the product heated with formaldehyde; p-dioxydiphenyl is condensed with cresol sulphonic acid and formaldehyde, and the neutralized product is heated with sodium sulphite; p-dioxysulphobenzide is sulphonated by sulphuric acid and the neutralized product is condensed with sodium phenol sulphonate and formaldehyde; p-dioxydiphenylmethane is sulphonated by sulphuric acid and the product heated with 1-naphthylamine-5-sulphonic acid and phosphorus pentoxide; naphthalene sulphonic acid is heated with sulphuric acid and formaldehyde, and the resulting tanning-agent is heated with cresol sulphonic acid formaldehyde.  Specification 18258/13 is referred to. The products may be used alone or mixed with other tanning-agents, or in combined tanning processes wherein both vegetable and mineral tanning-agents are used.  Tannin derivatives.-It is also stated that in the process described in Specification 148,897, glycerine, waste sulphite-cellulose lye, &c. may be coupled with vegetable tannins.
Patent GB-1534642-A (GB)
Title: Transmission with a gear retainer
IPC: F16H57/021
Filed: 1977-05-17
Abstract: 1534642 Change-speed gears EATON CORP 17 May 1977 [19 May 1976] 20739/77 Heading F2D A countershaft change-speed gear has two countershafts 21, 21a whose gears support floating mainshaft gears which can be selectively clutched to the mainshaft 48. Axial thrust on two adjacent mainshaft gears 60, 62 is accommodated by an assembly 87 comprising a thrust member 104 fixed to the mainshaft and having surfaces which abut surfaces 60b and 62b of the gears 60, 62. Axial thrust on a gear 60 or 62 clutched to the mainshaft towards the other gear is thus through surfaces rotating at the same speed. Snap rings 112 and 114 limit the degree of engagement of a clutch and also react against forces tending to move the clutched gear away from the unclutched gear. A snap ring 102 and a groove 103 limit the relative axial movement between the gears.
Patent GB-385891-A (GB)
Title: Improvements in or relating to locks with two-part tumblers
IPC: E05B35/00
Filed: 1932-07-22
Abstract: 385,891. Keylocks. SKRZEPINSKI, S., Biezanow, Poland. July 22, 1932, No. 20740. [Class 44.] In a lock having two - part tumblers consisting of a number of ring segments 7, Fig. 1, bearing on the arcuate faces of an equal number of sectors 5, the sectors are coupled to the ring segments by a member 11 resiliently mounted on one of the parts and adapted to engage in any one of a series of notches 6 in the other part so as to assume definite positions in relation to one another determined by the ward steps 22 of a key which may be changed as desired. Notches 8 on the external surfaces of the segments 7 hold a locking bolt 9 in locking position and only come into line when the segments 7 are in a position corresponding to the key to permit the locking bolt lever 9 to pass into the notches and release the locking bolt 13. As shown, a key is inserted into a notch 4<1> in a plate 4 inside the lock casing 1 and which can be rotated by turning a spindle 3, on which the sectors 5 are loosely pivoted, by a knob external to the casing 1, to turn the sectors 5 by the wards 22 of the key. Teeth 6 in the peripheries of the sectors and spring- pressed coupling levers 11 move the segments 7 into position where the notches 8 are in alignment for engagement by a projection 9<1> on a pivoted locking lever 9 which can be moved by a lever 18 operated by a knob external to the casing to permit the lever 9 to move out of the way of the locking bolt 13 which is withdrawn when the knob is turned. Fig 5 shows a form of key wherein the wards are formed of tubes 30 into each of which in turn balls 29 may be fed singly to any desired number to give wards of the desired formation. Fig. 6 shows another form of key wherein the broadened ends of resilient bars 44 slide in tubes 30, being operated as desired by knobs 45.
Patent GB-579677-A (GB)
Title: Electric signal communication system
IPC: H04K1/02
Filed: 1943-12-10
Abstract: 579,677. Phase modulation. STANDARD TELEPHONES & CABLES, Ltd. Dec. 10, 1943, No. 20746. Convention date, Sept. 19, 1942. [Class 40 (v)] For obtaining secrecy in communication, a carrier wave is modulated by a sub-carrier and one of its harmonics, and a signal is sent by varying the phase of the harmonic. The generator 12 of the sub-carrier is connected to a frequency-multiplier 16 producing a harmonic, preferably the third. This harmonic is phasemodulated at 22 by a signal from the source 18, and is added to the sub-carrier in the element 26. The resultant is impressed on an amplitude or frequency modulator 28 interposed between the carrier generator 32 and the radio transmitter 30. At the receiver, the carrier is demodulated and the sub-carrier is separated from its harmonic by filters 40, 44. The subcarrier passes to a frequency multiplier 42 comparable with that at the transmitter, and the harmonic thus produced is fed, together with the phase-modulated harmonic from the filter 44, to a phase-comparing device 46, the signal resulting therefrom being fed to an amplifier 41 and reproducer 50. When the third harmonic is used, its amplitude should not be more than 30 per cent of the fundamental, and the phasing should be such that the peak of unmodulated harmonic B coincides with that of the fundamental A, Fig. 2. The effect of phase-shifting the harmonic B to B<1> is to shift the combination C to C<1>.