baber/WOPTO huggingface dataset:
Patent GB-280519-A (GB)
IPC: D01D10/04
Filed: 1927-10-21
Abstract: 280,519. Spinnstoffwerk Glauchau Akt.-Ges., and Voss, H. Nov. 12, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Apparatus for making filaments. - Artificial threads wound on perforated bobbins are washed free from adherent particles or decomposition products by causing, by suction or pressure, air gases or vapours to penetrate with a washing liquid through the wound layer. The threads may be intermittently moistened by dipping, spraying, &c., and the air &c. with the liquid caused to penetrate during the intervals. Ammonia or other neutralizing gases may be employed. A separate washing liquid may be dispensed with, vapours which during the penetration are partially or entirely condensed to liquids being employed.
Patent GB-936307-A (GB)
Title: Automatic reliability optimising multifrequency radio system
IPC: H04L1/04
Filed: 1960-08-12
Abstract: 936,307. Radio signalling. STANDARD TELEPHONES & CABLES Ltd. Aug. 12, 1960 [Aug. 19, 1959], No. 28022/60. Class 40 (5). In a signalling system in which signalling is effected over a carrier link having available a plurality of carrier frequencies, means at the receiver responsive to errors in the received signals automatically shift the transmission to another of the available frequencies when the signalling errors detected exceed a predetermined number in a given time. As shown; a radio telegraph transmitter 10 and a receiver 11<SP>1</SP> form an East-West link, and a transmitter 10<SP>1</SP> and receiver 11 form a West-East link, each transmitter being provided with a frequency selector 12 or 12<SP>1</SP> whereby it may be arranged to operate at any one of a plurality of carrier frequencies. The devices 12, 12<SP>1</SP> are controlled by a special code, in this case consisting of the letters W, X, Y or Z repeated ten times and giving a choice of four frequencies. The code generators are controlled by respective stepping switches 13, 131 and relays 14, 141 the relays 14, 14<SP>1</SP> also controlling respective relays 15, 15<SP>1</SP> which respond to any one of the codes, whereby the intelligence signals from one of the multiplex signal sources, e.g. source 1 is interrupted momentarily and replaced by the appropriate code from the code generator. Each of the receivers is associated with a conventional distributer 17, 17<SP>1</SP> and a frequency selector 18, 18<SP>1</SP> for automatically tuning the receivers to the corresponding transmitter. The stepping switches 13, 13<SP>1</SP> are provided with stepping magnets 19, 19<SP>1</SP>, which are stepped each time a device 20, 20<SP>1</SP> receives a count of " n " error pulses from a counter 21, 21<SP>1</SP> associated with error detection device 22 or 22<SP>1</SP>. Each channel is provided with an error responsive relay 23 to 26 and 231 to 26<SP>1</SP> the telegraph messages preferably being transmitted by a code of the type having the same number of "mark" elements in each combination. Code timer and release devices 29, 29<SP>1</SP> control the duration of transmission of the control codes through relays 14, 14<SP>1</SP>, and reset timers 28, 28<SP>1</SP> prevent the operation of devices 20, 20<SP>1</SP> if " n " errors are not detected within a given time. If, for example, relay 14 is operated, due to the required number of errors being counted, a new code, e.g. code X will be sent by the transmitter 10 and via the receiver 11<SP>1</SP> and frequency selector 12<SP>1</SP> will change the carrier frequency of transmitter 10<SP>1</SP>. At the same time code X will operate frequency selector 18 to adjust receiver 11 correspondingly.
Patent GB-1067778-A (GB)
Title: A photoelectric transducer utilizing an electron beam
IPC: G01J3/42
Filed: 1964-07-07
Abstract: 1,067,778. Electron beam apparatus. SANKYO CO. Ltd. July 7, 1964 [July 10, 1963], No. 28027/64. Heading H1D. [Also in Division G1] A photo-electric electron beam transducer comprises a photo-conductive target which i swept by an electron beam of rectangular crosssection. For use in a spectrophotometer (see Division G1) there are two photo-conductive targets 7, 8 formed by layers 5, 6 of photoconductive material on transparent signal plates 3, 4 and the targets are swept simultaneously by a common beam 11 of ribbon form, or two beams may be used. A transducer with only a single photo-electric target may be used to obtain emission spectra.
Patent GB-713304-A (GB)
Title: Improvements in or relating to pig rearers
IPC: A01K9/00
Filed: 1952-11-07
Abstract: 713,304. Pig rearers. DREW, A. E., and COX, A. G. Dec. 1, 1952 (Nov. 7, 1952], No. 28058/52. Class 5 (2) A piglet feeding-tank 11 is housed within a casing 1 with hinged front panels 5, 6 connected by catches 7. Teats 13 project from the tank through openings in the panel 6, which protects the rims of the teats from acting as "teething- rings" and thereby being torn off. Pipes 14 extend from the teats nearly to the apex of the V-shaped base of the tank, and may act as agitators by mounting the teat-bushes pivotally in the front of the tank. Heating elements 8 with a contact pad associated with a thermostat may be mounted beneath the tank base. The upper part of the casing carries an infra-red heater 20 and a pilot-light 23, and troughs 24 for feeding subsequent to the piglet stage may be hooked to the back.
Patent GB-602427-A (GB)
Title: Improvements in and relating to magnetic recording heads
IPC: G11B5/187
Filed: 1945-10-24
Abstract: 602,427. Magnetic recording heads. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 24, 1945, No. 28082. Convention date, Nov. 2, 1944. [Class 40 (ii)] In a recording and reproducing head for steel wire, the winding and the core are divided, the winding portions being proportioned and connected, and the core-pieces adjusted, so that the net voltage induced in the winding by stray magnetic fields traversing the core is substantially zero. Fig. 2 shows one form of construction in which the winding is wound in equal amounts 13, 14, but in contrary directions, on semicircular core-elements 7, 8. Under such conditions, speech currents in the coils produce opposite polarities in the confronting polepieces 11, 12, as is required for magnetic recording, while at the same time components of stray magnetic fields traversing the core at right angles to the recording medium 5 induce in the two halves 13, 14 of the winding equal and opposite voltages, the resultant effect of which is zero. Similarly, components of fields parallel to the medium 5 produce equal and opposite voltages in the two half windings 13, 14, provided that the reluctances of the gaps 9 and 10 are equal, adjustable magnetic shunts 15 being provided for this purpose. Other constructions are described with reference to Figs. 3 to 7 inclusive (not shown), while Figs. 8 to 10 inclusive (not shown) illustrate modifications of a design for use with steel tape, where transverse, longitudinal and edgeways modulation is used.
Patent GB-1530229-A (GB)
Title: Coke oven door frame and jamb
IPC: C10B25/06
Filed: 1977-07-05
Abstract: 1530229 Coke oven door frame P C CAMPANA 5 July 1977 [6 July 1976] 28106/77 Heading C5E A door frame, for a coke oven having an elongated vertical opening in the front wall thereof, is provided with vertical grooves of width x along each side edge which receive side jamb members of thickness y, wherein y<x, extending outwardly frome the frame. Preferably top and bottom jamb members are also provided thereby forming a rectangular jamb construction. The jamb members may be rigidly affixed to the frame by intermittent welds along both sides. The frame may be of mild steel plate of thickness 2", and the jamb members may be of mild steel plate of thickness about 1À25". The width of the grooves may be about 1À275" giving a clearance of 0À025". The structure is rigid and may be reshaped into its original configuration, if distorted by heat, without removing it from the coke oven.
Patent GB-676984-A (GB)
Title: Improvements in or relating to screw caps for bottles, jars, canisters and like containers
IPC: B65D41/04
Filed: 1949-11-03
Abstract: 676,984. Stoppers &c. ROBINSON, F. G. Sept. 13, 1950 [Nov. 3, 1949], No. 28127/49. Class 125(iii) A screw cap is constructed in two parts, the outer member 2 having preformed projections or recesses of non-circular shape which are engaged by corresponding surfaces preformed on the inner member 1 which carries the screw thread, so that relative rotation of the parts is prevented. In the form shown in Figs. 2 and 3 the member 1 has an angular flange 3 and the member 2 is of similar shape, the lower edge 4 of the outer member being turned over to retain the inner member. The inner member may be a onepiece stamping or in a modification it is constructed from a single strip.
Patent GB-1446776-A (GB)
Title: Signal suppressors tyre building apparatus
IPC: H04B1/12
Filed: 1973-06-13
Abstract: 1446776 Interference suppression; combined transmitting and receiving systems PLESSEY CO Ltd 17 May 1974 [13 June 1973] 28151/73 Heading H4L In a receiver an unwanted signal is suppressed by means of an amplifier and mixer connected in a signal path to define a negative feedback loop, the mixer receiving both a signal to be suppressed, from the amplifier, and a signal at approximately the same frequency from an oscillator, the mixer providing a negative feedback signal for the amplifier when the oscillator frequency is such that the difference between it and that of the signal to be suppressed falls within the passband of the feedback loop. Signals received by aerial 2 are passed by aerial amplifier 1 to 3dB coupler 4, one output of which feeds a receiver via line 5. The second output on line 6 is fed to multiplicative mixers 9, 10; mixer 9 receives a second input via line 7 from an oscillator comprising a local transmitter 3 responsible for the signal to be suppressed. Mixer 10 receives its second input from line 7 via 90 degree phase-shifter 12: further phase-shifters 11, 13 compensate for unwanted phase-shifts in the negative feedback path. Mixers 9, 10 feed via low-pass filters 14, 15 respectively, into the first inputs of mixers 16, 17 respectively, which receive their second inputs respectively directly from line 7 and via phase-shifter 12. The outputs from mixers 16, 17 are combined in adding network 18 and applied as negative feedback to the input of amplifier 1. Instead of transmitter 3, the second signal may be derived from an oscillator which is manually adjustable, either continuously or step-wise.
Patent GB-681719-A (GB)
Title: Gear testing apparatus
Filed: 1949-11-03
Abstract: 681,719. Gauging toothed gears. MAHR, C. Nov. 3, 1949 [Dec. 15, 1948], No. 28222/49. Class 106 (ii). A gear - testing machine operating in accordance with the single - flank meshing method and comprising a shaft to which is fixed a master gear, and two concentric shafts, to one of which is fixed the gear piece to be tested and which is placed in mesh with the master gear, friction discs being fixed to the other of said concentric shafts and to the master gear shaft, and having a stationary recording device, and differentially acting means carried by the concentric shafts for transmitting any variation in the angular velocity of said shafts to the recording device, in which the difference in angular velocity of the two concentric shafts is transmitted to the recording device by means of an axially displaceable thrust element arranged coaxially with the said shafts is characterized in that the element has complete freedom of movement except for engagement at its ends with lever members, one of which moves with any variation in velocity and the other is connected to the recording device. Apparatus for testing gears by the single flank meshing method comprises a standard gear 3 fixed on a shaft 2 driven through worm-wheel 8 and worm 7 on a shaft 6 by an electric motor 4. A gear 9 to be tested is fixed to a shaft 10 and meshes with the gear 3 while a friction disc 13 on the shaft 2 co-operates with a friction disc 12 on a hollow shaft 11 coaxial with the shaft 10 so that any variations in angular velocity between the shafts 10, 11 indicate irregularities in the gear under test which may be recorded on a drum 14 driven by the electric motor 4 by a stylus 19 rotatably mounted in the framework. Relative movement between the shafts 10, 11 is transmitted to the stylus 19 through an arm 22 on the shaft 10 working in an aperture in the shaft 11 and engaging a bell-crank lever 25 pivoted on a flange of the shaft 11, the lever 25 engages a lever 26 which engages a member 24 coaxial with the shafts 10, 11 and transmits movement to a bell-crank lever 27 pivoted in the framework and the lever 27 moves a member 28 engaging an arm 29 on a spindle 30 carrying the stylus. To accommodate gears of different sizes the shaft 2 is mounted in a carriage slidable by screw means 32 and friction discs of suitable size replace discs 12, 13.
Patent GB-1182437-A (GB)
Title: Improvements in and relating to Methods for Coating Substances with Silicon Carbide and Products Produced Thereby
IPC: C23C16/32
Filed: 1967-06-19
Abstract: 1,182,437. Silicon carbide coating. UNITED AIRCRAFT CORP. 19 June, 1967 [18 July, 1966], No. 28250/67. Heading B2K. Oxidation and corrosion resistant silicon carbide coating on a base material is produced by contacting a hot surface for the base material with a liquid organo silicon halide, the temperature of the organo silicon halide being maintained below its boiling point, and the temperature of the surface at contact being above the decomposition temperature of the organo silicon halide. The base material may be an electrically conducting material which is heated by electrical resistance heating while in contact with the liquid organo silicon halide, or an electrically insulating material which is preheated prior to contact with the organo silicon halide. The base material may be an electrically conductthe coated filaments may be used for the manufacture of filament wound structures and fibre reinforced structures. The base materials include niobium, tantalum, tungsten, molybdenum, rhenium, silicon, carbon, glass, alumina, graphite. Liquid drops or globules may also be coated. The organosilicon halides may be RS 1 X 3  or RS 1 HX 2  (where R is an alkyl, aryl, alkyl aryl radical, X is halogen).
Patent GB-1397062-A (GB)
Title: Inertia-actuated electrical devices attached to vehicle foot brake pedals for obtaining information relative to the brakes
IPC: B60T17/22
Filed: 1973-06-14
Abstract: 1397062 Inertia switches SVENSKA AB BROMAREGULATOR 14 June 1973 [19 June 1972] 28250/73 Heading H1N [Also in Division F2] A device suitable for establishing the "release time" between letting up a brake pedal and the attainment of a predetermined lower pressure in an air brake system, for example, comprises a housing with releasable attachment means by which it is firmly attached to a vehicle brake pedal, said housing containing a movable mass biased to a rest position but arranged to move under inertial force at the commencement of a brake pedal movement relative to the vehicle, independently of any change in velocity of the vehicle as a whole, and thus to provide an electrical signal. As shown, housing 5 is secured to a pedal (2, Fig. 2, not shown) by a rubber strap (3) and a ferromagnetic mass 7 on a pivoted yoke 9 is biased by a magnet 6 away from a fixed contact 12. When the pedal is released housing 5 moves upwards and mass 7 engages contact 12 to provide a signal over wires 10, 11. A further fixed contact (not shown) may be provided at the top of aperture 8 to signal the commencement of pedal depression for determination of "loss time" between pedal depression and attainment of a given higher pressure in the brake system. In this case the magnet 6 biases the mass 7 to an intermediate position. Bias force may be provided by a spring instead of a magnet.
Patent GB-700237-A (GB)
Title: Improvements in semiconductor amplifier circuits
IPC: H01L29/00
Filed: 1949-11-04
Abstract: 700,237. Semi-conductor amplifiers; modulating systems. WESTERN ELECTRIC CO., Inc. Nov. 4, 1949 [Nov. 6, 1948], No. 28275/49. Classes 40 (5) and 40 (6). [Also in Group XXXVI] In an electric signal amplifier network comprising a transistor, an impedance element is connected in either the signal input circuit, or the signal output circuit, of such value that the other circuit has a desired impedance. Fig. 3 shows a grounded base transistor amplifier circuit have a base electrode 5, emitter electrode 3, collector electrode 4 and the usual biasing sources 10, 11. Input signals from source 12 are applied through impedance Z1 to the emitter, and amplified signals appear in load Z2. Fig. 5 shows the equivalent circuit in which Zb, Ze, and Zc are the base, emitter and collector impedances respectively and e' represents a fictitious generator whose e.m.f. is proportional to the emitter current (i.e. e<SP>1</SP>=Zm ie). The way in which the values of Ze, Zb, Zc and Zm may be determined by external impedance measurements is described, and if the operating frequency is not excessive these are resistances, the approximate values being as follows : Ze from 200 to 800 ohms; Zb from 100 to 600 ohms; Zc from 1,500 to 30,000 ohms and Zm from 10,000 to 50,000 ohms. The ratio of increments of collector current to increments of emitter current is termed α and is shown to equal (Zm+Zb)/ (Zc+Zb). Three distinct types of transistor are described having different relative values of electrode impedances. It is shown mathematically that for the circuit in Figs. 3 and 5, the input impedance and the output impedance This circuit and also " grounded emitter" and "grounded collector" circuits are analysed for each of the three types of transistors, and it is shown that in certain cases, by varying the resistive load Z2 the input impedance may be made infinite, positive, zero or negative, and also that by varying Z1 the output impedance may be made positive, zero or negative. Circuits having zero input impedance may be used for current measurements, and circuits in which the input impedance may be varied between zero and infinity by moderate variations of Z2 may be used in absorption modulation systems. In one modification, Fig. 29 (not shown), an additional resistance Rp is connected in series with the collector, so that an infinite impedance input circuit can be provided while still permitting the output circuit to be matched to a specified load. The use of feedback resistances, Figs. 31, 33, 35 (not shown) is also described to increase flexibility in design. Multistage amplifiers are also described, Figs. 37-41 (not shown), and reference is made to the method of achieving impedance matching between the stages, sometimes by utilizing additional series resistances, or feedback resistance arrangements as previously described. Reference is made to Specifications 694,025 and 700,235 regarding the use of one or more resistances to provide the emitter bias. Specifications 694,021 and 700,232 also are referred to.
Patent GB-189948-A (GB)
Title: Improvements in joints or connections for bedsteads and other articles of furniture
IPC: F16B12/60
Filed: 1921-10-26
Abstract: 189,948. Wales, Ltd., and Blackmore, A. E. Oct. 26, 1921. Joints and connections.-Relates to dovetail joints constructed of sheet metal. The lower end of the neck c<2> of the tapered male portion c is constructed so that the opposed edges meet, forming an incompressible joint with the female portion. The side-wings c<1>, e of the two portions have countersunk holes g, stamped or pressed so that lugs g' are formed, preferably with cutting-edges to grip the members a, b.
Patent GB-404419-A (GB)
Title: Improved partition for drawers
IPC: A47B88/20
Filed: 1932-10-12
Abstract: 404,419. Partitions for drawers. FORD, E. A., Ays-Garth, King's Road, Colwyn Bay, Denbighshire. Oct. 12, 1932, No. 28397. [Class 18.] An extensible partition has two relatively slidable flat parts A, B clamped together by a bolt b<1> passing through a slot a in one or both parts. The ends may be shod with rubber C or other material to give a frictional grip.
Patent GB-1438796-A (GB)
Title: Advancing mine support systems
IPC: E21D23/00
Filed: 1973-06-14
Abstract: 1438796 Advancing mine roof supports K M GROETSCHEL 14 June 1973 [14 June 1972] 28419/73 Heading E1P In an advancing mine roof support assembly comprising a pair of interconnected outer frames A adapted to be selectively advanced relative to an inner frame B by jack means 18, a forward cross-beam 3 and a rearward crossbeam 4 respectively interconnects the two forward and rearward sockets of the outer frame, the rearward cross-beam 4 extends over the floor beam 7 of the inner frame B with the rearward prop socket 9 of said inner frame B positioned rearwardly of the rearward cross-beam 4 and the forward prop socket 8 of the inner frame positioned forwardly of the said rearward cross-,beam 4-the distance between the cross-beams and the distance between the sockets 8, 9 being equal to the length of two complete forepoling steps. The assembly is provided with alignment jacks 25, shield means 13 and stabilising means incorporated in the roof superstructure for details of which, Fig. 6 (not shown), should be referred to.
Patent GB-891477-A (GB)
Title: Thiamorpholines
Filed: 1958-09-04
Abstract: The invention comprises: (a) compounds of the general formula <FORM:0891477/IV (b)/1> (wherein R11 and each R represent hydrogen atoms or C1-6 alkyl radicals and Ar represents an aryl (including heteroaromatic) or substituted aryl radical) and their acid addition salts; (b) the preparation of the bases of (a) by reacting a compound of the general formula <FORM:0891477/IV (b)/2> with a Grignard reagent ArMgY (Y=Br or I) or an aryl lithium compound ArLi, and, if desired, when R11 in the starting material represents hydrogen, alkylating the product so obtained; and (c) the combination of the process of (a) with the preparation of the starting materials by the process of Specification 891,478.  The resolution of the products into their optically active isomers is described.  The products are useful clinically in the treatment of depressed states and for inhibition of the appetite of obese patients.
Patent GB-687415-A (GB)
Title: Improvements in or relating to pyrometers
Inventor: SCOLES GRAHAM JOHN
IPC: G01J5/08
Filed: 1949-11-07
Abstract: 687,415. Radiation pyrometers. METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. June 22, 1950 [Nov. 7, 1949], No. 28507/49. Class 40 (iii). In a pyrometer a number of separate radiation paths from the hot surface to the heatsensitive device are provided, each path including at least two apertured diaphragms along the path. As shown, tubes 3 carry diaphragms at each end, a number of such tubes being arranged to view the end of an auxiliary tube 6 which may dip into molten metal. The tubes need not be circular. A lens may be used at the rear of the tubes if the photo cell is small. The ends of the tube may serve as diaphragms. If high temperatures are to be withstood the tubes are preferably of ceramic possibly surrounded by a quartz tube to reduce thermal shock. In a modification (Fig. 3), the diaphragms are constituted by plates 4a, 5a, mounted in a tube 3 and having corresponding holes drilled in each on pitch circles of different diameters. These plates are mounted on a central rod 10 and a central plate 11 similarly apertured may be provided to prevent the light paths crossing.