baber/WOPTO huggingface dataset:
Patent GB-1062761-A (GB)
Title: Means for removing glare of a light beam
IPC: B60J1/20
Filed: 1965-02-23
Abstract: 1,062,761. Lamps. J. F. STEEL. Feb. 23, 1965 [April 9, 1964; Oct, 26, 1964; Dec. 14, 1964], No. 7716/65. Heading F4R. [Also in Division H1] An anti-glare device for a lamp comprises a transparent plate between the lens and the reflector, a plurality of parallel louvres rotatably mounted between the plate and the lens, and apparatus for rotating the louvres in unison at such a rate that the light emitted by the lamp appears uninterrupted. The lamp comprises a reflector 25 (not shown), bonded to a transparent glass plate 26 to define a compartment for the lamp filament, and a lens 23 forming with the plate 26 a compartment for the louvres 11-20, which are rotatably mounted in a frame 36 secured to the plate. The louvres are driven by an electric motor 35 connected in parallel with the filament and having a drive-shaft 37 carrying gears 42, 43 meshed with corresponding gears 44, 51 on the louvre 11. Gear 51 is also meshed with a gear 52 on the louvre 12. A toothed driving belt 45 passes over toothed pulleys (not shown) on the louvres 11, 13 . . . 19 so that they rotate in one direction, and a second toothed driving belt 53 passes over toothed pulleys on the alternate louvres 12, 14 . . . 20 so that they rotate in the opposite direction. The louvres are rotated at speeds of up to 3,400 r.p.m., and although the light appears to be uninterrupted, glare is said to be eliminated. The louvres are preferably moulded from plastic material and have integral bearing elements, pulleys and gears, and the lens 23 is detachably connected to the plate 26 and reflector (25) so that the motor and louvre assembly can be repaired or replaced.
Patent GB-253622-A (GB)
Title: Improvements in machines for cutting or perforating pattern and the like cards, specially applicable for cutting or perforating cards for jacquard machines
IPC: D03C17/00
Filed: 1925-03-23
Abstract: 253,622. Lee, A. H. March 23, 1925. Cards and the like, punching.-In a machine for punching jacquard cards and the like, the step-by-step card traverse and the punching head are automatically actuated, the latter under manual control, while the punches are selectively locked in the 'head by plungers, slidingly pivoted to bell-cranks operated by means of keys arranged as in a piano. The machines are directly driven from a motor or belt-driven from a line shaft; when several machines are in line, a common line-shaft drives each machine through a clutch. An eccentric c<19> on the main-shaft c<9>, Fig. 12, oscillates a lever c<7> through a slot in which passes a rod c<4>, pivoted to the punching head c, c<1>, c<3>. The lever c<7> and the rod c<4> are operatively connected by depressing a pedal c<13> so that a catch c<12> on the rod engages the lever. A stop c<17> is provided for the rod c<4>. The blank is drawn through a slot b<1>, Fig. 1, between the perforated punching plates B, B<1> in which the punching head is slidably mounted. The pattern hole punches P and the peghole punch P<1> are slidably mounted in the head C, Fig. 6. The downward movement of each punch relative to the head C is limited by a shoulder p' thereon, while the upward movement may be limited by a plunger F, which can be pushed across the punch hole E against a spring f' by a bell-crank lever G. The bell-cranks G are mounted on a common pivot g<2>, and comprise rods g<1> having sliding pivotal engagement with the plungers. The arms G<1> are of varying length to co-operate with similarlyarranged arms H<1> of intermediate levers mounted in two sets on common pivots h<1>, Fig. 1. The arms H of these levers each contact with one of two sets of parallel keys K arranged on common pivots k<2>. The axes of the plungers may be splayed and the bell-cranks correspondingly arranged. Finger-positioning plates M are fixed between the keys, while palm-rests N, Fig. 12, are also provided. By depressing the requisite keys for each downward movement of the punching head C, the necessary perforations may be made in the blank. In a modification, the keys K and the bell-cranks H are connected by Bowden wire devices. In a further modification, a series of air chambers k<7>, Fig. 14, are connected to motor bellows k<9> operating the bell-cranks G. Coupled valves k<5>, k<6> actuated bv the keys control communicationbetween the chambers k', and the atmosphere and a low pressure chamber k<8> respectively.
Patent GB-1529034-A (GB)
Title: Surface acoustic wave devices
IPC: H03H9/02
Filed: 1977-02-24
Abstract: 1529034 Surface wave delay lines STANDARD TELEPHONES & CABLES Ltd 24 Feb 1977 07786/77 Heading H3U A surface acoutic wave device used as a delay line comprises a layer of piezo-electric material 1 with input and output transducers 2, 3 on an upper surface and bonded at its lower surface to a metallized layer 5 covering the top layer of a second piezoelectric material slice 4 which has a further metallized layer 6 on its lower surface. The layers are preferably quartz 1 and lithium niobate 4 and by the application of a voltage across the slice 4 the structure can be made to flex and thus alter the spacing between the conductors of the transducer and thus the operating frequency of the device.
Patent GB-1060275-A (GB)
Title: Therapeutic dental cement composition
IPC: A61K6/06
Filed: 1964-02-25
Abstract: A dental filling cement comprises zinc oxide cement powder containing 0.1%-1% of triamcinolone acetonide and 1.5%-3% of tetracycline demethyltetracycline or demethylchlortetracycline. For setting the cement a hardening agent such as eugenol (which may be mixed with rectified oil of turpentine) is added immediately before use.  The cement may include Canada balsam or rosin.  Before applying the cement the tooth cavity may be temporarily filled with a hydrophilic paste comprising triamcinolone acetonide and tetracycline, demethyltetracycline or demethylchlortetracycline with polyethylene glycol.  The cement, hardening agent and hydrophilic paste may be packed separately in a pack.  In filling large cavities, the dental cement is covered with a phosphate cement which may comprise zinc oxide cement powder and a hardening catalyst containing concentrated phosphoric acid and aluminium phosphate.
Patent GB-1434149-A (GB)
Title: Bistable switching circuitry
IPC: H01H47/04
Filed: 1974-02-21
Abstract: 1434149 Switching circuits for consuming devices SIEMENS AG 21 Feb 1974 [22 Feb 1973] 8005/74 Heading H2H A switching circuit comprises a relay 8 having self-holding contacts 5, change-over contacts 6 and load circuit contacts 7, a switch 3 having a stable rest state and a non-stable momentary contact state, and a capacitor 2. The capacitor 2 is initially charged from a D.C. source via the contacts 6 and the switch 3. When the switch 3 is operated, the capacitor discharges through the relay coil thereby changing over the contacts 5, 6, 7. The relay is held energized by the contacts 5 on release of the switch 3 and the capacitor is discharged via the contacts 6. When the switch 3 is operated again, the relay coil is connected across the discharged capacitor, the charging of which reduces the voltage across the coil so that the contacts 5-7 return to their initial positions.
Patent GB-1140225-A (GB)
Title: Digital ratio computer
IPC: G06F7/62
Filed: 1966-02-23
Abstract: 1,140,225. Electronic counters; selective signalling. MONSANTO CO. 23 Feb., 1966 [23 Feb., 19651, No. 8052/66. Headings G4A and G4H. When control circuit 44 removes an inhibit signal from lead 46 X, Y pulses from leads 22, 24 are applied to counters 26, 42 respectively. When the reference counter reaches a predetermined number (= 10<SP>n</SP>) it signals control circuit 44 which restores the inhibit signal. The number registered in 26 remains on display with appropriate decimal point to show the relationship X/Y until the control circuit 44 applies a reset signal. Switch 20 may be adjusted to compare either X or Y with time derived from clock pulses on lead 28, e.g. for indicating the length of yarn fed in unit time. The control circuit 44 forms the subject of divided Specification 1,140,226, and comprises a unijunction relaxation circuit (Fig. 3) which responds to a pulse on lead 48 to produce an output on line 46 for a predetermined time (Division H3) and a reset pulse on line 72.
Patent GB-232935-A (GB)
Title: Improvements in or relating to the treatment of flax, hemp or like textile materials for the purpose of obtaining their fibres in a silky and supple form
IPC: D01C1/04
Filed: 1925-03-25
Abstract: 232,935. Dubois, C. April 26, 1924, [Convention date]. Retting. - In obtaining supple silky fibres from flax and hemp, the materials, freed from shives by retting and scutching are treated with hot alkaline lyes to remove gummy resinous substances, and after washings and rinsings the fibres are passed through cotton opening and carding machines. The fibre.-, sc: obtained. although silky, may be improved by treatment with a suitable oil or varnish, and passing through pressing and smoothing rolls in known manner, or the threads obtained from the fibres may be impregnated.
Patent GB-1380526-A (GB)
Title: Production of petroleum cokes
IPC: C10B57/04
Filed: 1973-02-19
Abstract: 1380526 Petroleum coke MARUZEN PETROCHEMICAL CO Ltd and CHIBA CARBON RESEARCH CORP Ltd 19 Feb 1973 [1 March 1972] 8091/73 Heading C5E Non-graphitizable and graphitizable cokes are produced by preheating a low-sulphur crude oil to a temperature required for a first coking stage; delay coking in a coking drum at 380-430‹ C., 2-20 kg./em.<SP>2</SP>G to produce a non-graphitizable coke; removing from the uncoked product gases and fractions such as gasoline, kerosene and gas oil to leave a heavy residue; preheating this heavy residue to a temperature required for a second coking stage; delay coking in a second coking drum at 400- 460‹ C., 4-20 kg./cm.<SP>2</SP>G to produce a graphitizable coke, the temperature and pressure conditions in the second coking stage being higher than those in the first delayed coking stage. A layer of coke particles is provided in the bottom of the first coking drum before the start of operation. The heavy residue from the first stage may be vacuum distilled to remove a waxy fraction before coking in the second stage. Thermal tar may be added to the heavy residue to form a feedstock for the second stage.
Patent GB-697254-A (GB)
Title: Improvements in or relating to the determination of the temperature of deposition ofelectrically non-conducting solids from gases
Inventor: WEBSTER THOMAS JOHN
IPC: G01N25/68
Filed: 1951-04-09
Abstract: 697,254. Electric measuring systems. BRITISH OXYGEN CO., Ltd. April 8, 1952 [April 9, 1951], No. 8180/51. Class 40 (i). The temperature of deposition of an electrically non-conducting solid from a gas is measured by passing a stream of the gas over the surface of an electric conductor forming part of a periodically operated switch, progressively reducing the temperature of the conductor, and recording the surface temperature when the deposition of the non-conducting solid precludes closure of the switch. As shown, for recording the " ice-point" of a gas, a continuously driven cam 6 permits a platinum wire contact 1, carried by a spring biased bell crank 3, to contact periodically the top face 9 of a copper rod 10, the gas being fed to and from the face 9 by an inlet duct 24 and outlet 25. The bottom of the copper rod dips in a refrigerant, e.g., liquid oxygen or nitrogen, and an electric heater 20 is provided around the top end of the rod to remove the deposit therefrom after each measurement, so that a series of measurements may be made automatically. The temperature of the rod face 9 is measured by a thermo-couple 19 connected in the circuit of a known chopper bar type recorder. A brass insert 21' in the rod acts as a thermal resistance and renders the rate of cooling independent of the depth of immersion of the lower copper portion 22 of the rod. Contacts 15, 16 are closed by a further bellcrank and the cam 6 after the switch 9, 10 makes and opened before the switch 9, 10 opens. Control circuit, Fig. 2. Normally, i.e., when there is no deposit on the face 9 of the rod 10, a six bank four position uniselector C1-C6 is in position 1, where each closure of the switch 1, 9 operates a relay MMCR to open contacts S4 so that the closure of contacts 15, 16 has no effect. When the ice deposited prevents closure of the switch 1, 9, the subsequent closure of contacts 15, 16 energizes a relay R2, w.hich in turn energizes stepping magnet R3 to advance the uniselector to position 2. Over banks C2, C6 the chopper bar motor CBM and heater 20 respectively, are now switched on. After the temperature has been recorded, the release of the chopper bar closes a switch S5 which causes stepping of the uniselector to position 3. The heater 20 remains on until the ice has been evaporated from the face 9. Subsequently, a switch S6, actuated by the pointer of the temperature recording instrument at a predetermined temperature, closes, and through an amplifier A closes a switch S1 over which the stepping magnet R3 is energized to step the uniselector to position 4, when it is immediately stepped again to normal (position 1) ready for the next recording to be made.
Patent GB-661925-A (GB)
Title: Improvements in or relating to rear axles for tricycles
Inventor: BOULSTRIDGE THOMAS JAMES
IPC: B60B27/02
Filed: 1949-03-26
Abstract: 661,925. Tricycles. PHILLIPS & CO., Ltd.. J. A. March 27, 1950 [March 26, 1949], No. 8264/49. Class 136(iii) In a rear axle assembly for a tricycle of the type in which the axle 14 is rotatably mounted in bearings of the cup and cone type supported in brackets 12 carried by the ends of a transverse tubular frame member 10 parallel to the axle, the cone 15 of the bearing for the hub 19 of a free running wheel is keyed to the hub so that it rotates therewith while the outer races 13 are positively keyed against angular movement in housings in the brackets 12. Angular movement of each cup 13 is prevented by a notch 32 in the cup being engaged by a tongue 33 on one end of a pressed sheet metal make up-piece 34 which fits within a central channel section part of the bracket 12. One wheel hub 24 is secured to the axle 14 by means of an internal screw-threaded sleeve 25 fixed in the hub and screwed on to a reduced screwthreaded part 26 of the axle. The hub is locked by a washer 27 and a nut 28 screwed on to the outer end 29 of the axle which is of smaller diameter and is formed with a screw-thread of opposite hand. The axial position of the freely rotatable nut 19 is adjusted by means of a castle nut 22 screwed on to the end 23 of the axle. A split pin secures the nut in adjusted position. Each cone 15 is secured to its adjacent wheel hub 19 or 24 by means of cooperating axially extending teeth 20 and recesses 18 on the two parts.
Patent GB-1195771-A (GB)
Title: Improvements in and relating to Rotary Unions
Inventor: WALKER GORDON RICHARD
IPC: F16K3/08
Filed: 1968-02-20
Abstract: 1,195,771. Fluid-pressure apparatus. FILTON Ltd. Feb. 20, 1968 No. 8310/68 Addition to 1, 151, 342. Heading F1P In the rotary union described in the parent Specification wherein a ported disc 10 controls the sequential supply of fluid from a chamber 9 to a number of passages 13 formed in a rotatable shaft part 12, the passages 13 register with ports formed in a plate 15 carried by the shaft port 12. A radially edged peripheral notch in the disc 10 allows fluid to enter the ports on rotation of the shaft. To prevent the disc 10 from rotating on its fixed rod 7, a grub screw 21 is threaded into the disc 10 and engages a slot 22 in the rod 7. The provision of the plate 15 enables the ports therein which lead to the passages 13 to be shaped differently to the passages 13, which are preferably cylindrical bores.
Patent GB-1527163-A (GB)
Title: Automation gain control circuit
IPC: H03G3/02
Filed: 1976-03-02
Abstract: 1527163 Binaural systems; A.G.C. SHIN-SHIRASUNA ELECTRIC CORP 2 March 1976 [22 Aug 1975] 8310/76 Heading H4R An A.G.C. circuit for a two-channel system in which a variable impedance circuit comprising at least one transistor is associated with each channel characterized in that a corrective variable resistor having a movable contact is connected to the bases of the (or first, if more than one) transistors forming said variable impedance circuits, the movable contact being connected to one terminal of a control signal source the other terminal of which is connected to the opposite terminals of the variable resistor through a first and second shunt resistors respectively and a coupling resistor is connected between the bases of the transistors. In the embodiment, Fig. 2, transistors Q1, Q2 form a variable impedance circuit in a first channel and transistors Q1<SP>1</SP>, Q2<SP>1</SP> form a variable impedance circuit in a second channel. Coupling resistor R4 is connected between the bases of transistors Q1 and Q1<SP>1</SP> and variable resistor Rv is connected in parallel with R4 through resistors Rl and R2. The movable contact 2 of Rv is connected to a control signal source 1, formed by capacitor C, through resistor R22. The earthed terminal of capacitor C is connected to Rv through shunt resistors R3 and R<SP>1</SP>3. The control signal is derived from the two channels (outputs t<SP>1</SP> and t<SP>1</SP>2) through diodes D1 and D2. Such an arrangement compensates for differences in base currents or base-emitter internal resistances in transistors Q1 and Q<SP>1</SP>1 or Q2 and Q<SP>1</SP>2 so that substantially equal gains are achieved in each channel.
Patent GB-1520156-A (GB)
Title: Loudspeakers
IPC: H04R3/00
Filed: 1977-03-02
Abstract: 1520156 Loudspeaker circuits BRITISH BROADCASTING CORP 2 March 1977 [2 March 1976] 08340/76 Heading H4J In a loudspeaking arrangement comprising a loudspeaker coil 12a (Fig. 2) coupled to a signal input 18, the magnitude of the resistance of the coil 12a is used to modify the signal applied to the coil 12a or to another loudspeaker coil 14a. Damage caused to the loudspeaker 12 by overheating of the coil 12a may thereby be eliminated. The output of an input amplifier is applied to a crossover comprising low pass filter 22 and high pass filter 24. The filter outputs are applied to a preamplifier 26, 32, a power amplifier 28, 34 and an A.C. blocking capacitor 30, 36. A D.C. voltage source 40 and resistor 42 constitutes a constant current source to coil 12a and thus the corresponding voltage drop depends upon the resistance of coil 12a. A second low pass filter 46 has a cut off frequency of about 1 Hz and selects only D.C. voltage caused by the current from source 40 through coil 12a. After amplification this D.C. voltage is applied to a voltage comparator 50 where it is compared with a predetermined voltage defined by a Zener diode. After further amplification the signal is applied to a control input of the voltage controlled attenuator 30. Amplifiers 48 and 52 are adjusted so that the attenuation of the signal to the H.F. unit by attenuator 38 matches the attenuation of the output of the L.F. unit due to increase in the coil temperature. The constant current source comprising battery 40 and resistor 42 may be replaced by a constant voltage source. The control circuit output may be used to increase amplification in the L.F. signal path rather than decrease the amplification in the H.F. path and further control circuit may attenuate the L.F. signal for changes in the temperature of the H.F. coil. Preferably an additional resistor 62 between the D.C. voltage source 40 and the H.F. coil 14a is used to sense the resistance of the H.F. coil 14a. The voltage across coil 14a is applied to a low pass filter 64 (cut off frequency 5 Hz) through an amplifier 66 to a voltage comparator 68. This is set at a higher voltage than comparator 50 and senses when the applied voltage indicates that the temperature of coil 14a is dangerously high. An amplified signal is then applied to attenuator 38 to provide drastic reduction in or cut-off of the signal to coil 14a. Similar protection is provided for L.F. coil 12a by a voltage comparator 72 and amplifier 74 the output signal of which is applied to a voltage controlled amplifier 76. Comparator 50 responds gradually. Comparator 72 responds dramatically and may be used without or separately from the control function provided by comparator 50.
Patent GB-164178-A (GB)
Title: Improvements in dye preparations
IPC: C09B67/42
Filed: 1920-03-22
Abstract: Dye preparations for domestic use comprise an acid dyestuff, a weak organic acid, and gelatine or glue, made up in solid form in any shape.  The following dyestuffs are specified:-xylene red B, xylene blue A. S., Kiton green, Kiton fast violet 10 B, acid orange II, acid violet B.N., brilliant sulphon red B and roccelline; and the organic acids mentioned are acetic acid, tartaric acid, citric acid, and formic acid.  A solvent for the dyestuff such as glycerine or acetone, may be added.  The preparations dye silk or woollen articles without staining any cotton present.  Specifications 14388/89, [Class 146, Writing-instruments &c.], and 111,365 are referred to.ALSO:A dye preparation for domestic use comprises an acid dyestuff, a weak organic acid and gelatine or glue, made up in solid form. The preparations in aqueous solution dye silk or woollen articles without staining any cotton present.  The following dyestuffs are specified:-xylene red B, xylene blue A.S., Kiton green, Kiton fast violet 10B, acid orange II, acid violet B.N., brilliant sulphon red B and roccelline; and the organic acids mentioned are acetic acid, tartaric acid, citric acid and formic acid.  A solvent for the dyestuff, such as glycerine or acetone, may be added.  Specifications 14388/89, [Class 146, Writing instruments &c.], and 111,365, [Class 2 (iii), Dyes &c.], are referred to.
Patent GB-586509-A (GB)
Title: Process for the preparation of photographic bleaching-out layers
IPC: G03C1/815
Filed: 1939-03-16
Abstract: Compounds of the general formula <FORM:0586509/IV/1> wherein R1 is an unsaturated organic radical; R2 is H, an organic radical, or the group R4-N-R5; R3 is H, an organic radical, or the group R6-N-R7; and R4-R7 are H or organic radicals, and wherein R2 and R3, R4 and R5, and/or R6 and R7 may be joined in a heterocyclic nucleus and at least one of R2-R7 or the heterocyclic nuclei formed therefrom contains an OH group are prepared by reacting the appropriate isothiocyanate with the appropriate aminoalcohol or hydroxyalkylhydrazine.  N - b  - hydroxyethyl - N1 - allylthiourea is prepared by reacting allyl isothiocyanate with ethanolamine.  N - b  - hydroxypropyl - N1 - allylthiourea, N - di - (b  - hydroxypropyl) - N1 - allylthiourea N - di - (b  - hydroxyethyl) - N1 - allylthiourea, N - di - (b  - hydroxypropyl) - N1 - allylthiourea, N - allyl - N11 - b  - hydroxyethyl thiosemicarbazide, N - lactyl - N1 - cinnamylthiourea, and N - hydroxypiperidine - N1 - allylthiourea are similarly prepared.  Similar compounds may be prepared from mono- and di - (polyhydroxyalkyl) - amines and from p - hydroxyphenylethylamine. Cinnamyl isothiocyanate is prepared by refluxing potassium thiocyanate with cinnamyl bromide in ethyl alcohol.
Patent GB-273783-A (GB)
Title: Improvement in device for feeding scrap tobacco
IPC: A24C1/02
Filed: 1926-03-29
Abstract: 273,783. Marks, E. C. R., (International Cigar Machinery Co.). March 29, 1926. Cigar-making machines and appliances.-A device for feeding scrap tobacco to cigar-making machines &c. has a hopper 11 swung on pivots 12 by a crank-actuated rod 17 to deliver a predetermined quantity of tobacco on to a conveyer belt 6 running between side walls 25, 29. Rakers 33 on shafts 34 rotated in opposition to the conveyer from a power shaft through a gear box re-arrange, level, and straighten the tobacco, which is compressed by a roll 41 and delivered to the cigar making machine.