baber/WOPTO huggingface dataset:
Patent GB-1454531-A (GB)
Title: Frequency comparison circuit arrangements
IPC: G01R23/09
Filed: 1973-02-12
Abstract: 1454531 Counting apparatus FERRANTI Ltd 11 Feb 1974 [12 Feb 1973] 6769/73 Heading G4D [Also in Division H3] An arrangement for comparing the frequencies of two pulse trains comprises: a register 20 whose count is increased by pulses of one train, and decreased by pulses of the other; means for setting the counter to a predetermined count after a predetermined number of pulses of one pulse train; and means 29, 30 for providing an output indication if the count reaches a predetermined upper or lower limit. Eight state register 20 initially has a "1" stored in its fifth position and a first input pulse on line 10 sets bi-stables 12, 13. These bi-stables enable clock generator 15 and gate 19 to provide a pulse which steps register 20 backwards. If the two frequencies are the same, the first pulse on line 11 is the next to arrive and this enables gate 26 to allow a clock pulse from generator 15 to step the register 20 forward. At the same time a counter 31 has its count increased by one. The next pulse in line 10 then steps the register 20 back again. Each subsequent pulse at input 11 add one to counter 31 and at a predetermined count, the whole system is reset to its initial state via 32, 33, 34. If the frequency difference between the two pulse trains is sufficiently large, the register 20 will step to its maximum or minimum position before counter 31 provides a reset pulse and bi-stables 29 or 30 will be set to give an output indication that a predetermined frequency difference has been exceeded.
Patent GB-736040-A (GB)
Title: Improvements in boilers for sterilising and other purposes
Inventor: HUTT ARTHUR CYRIL
IPC: A61L2/07
Filed: 1953-03-11
Abstract: 736,040. Hot-water boilers ; heat-storing apparatus. GAS COUNCIL. March 8, 1954 [March 11, 1953], No. 6771/53. Classes 64 (1) and 64 (2). A domestic hot-water boiler burning coke or other solid fuel is provided with a heat accumulator 3 to generate steam when required for sterilizing purposes. The heat accumulator is a block of cast iron with a zig-zag passage 11, which is accessible from the exterior but is normally closed by a cover-plate 12 protected by a casing 22 enclosing heat insulation. The block is provided with a water inlet control valve with a restricted orifice, a two-way cock delivering steam either to sterilizing equipment or the atmosphere, a steam trap, and a relief valve. The back of the firebox above the boiler 1 is fitted with heat resistant blocks 23 to radiate heat on to the block.
Patent GB-101269-A (GB)
Title: Combined Rifle and Arm Shield for the Protection of Soldiers in Modern Warfare.
Inventor: GEE THOMAS JOHN
IPC: F41H5/08
Filed: 1916-05-12
Abstract: 101,269. Gee, T. J. May 12, 1916. Shields for attachment to.-Consists in a shield having means for attaching it to a rifle and also means for engagement by the arm of the user. In the construction shown in Fig. 5 a conical bullet-proof shield a is attached to a rifle by a pair of central conical jaws b, d, one of which d is hinged. The hinged jaw can be locked gripping the rifle by a lever i and rack h.
Patent GB-226075-A (GB)
Title: Improvements in vertical water-tube steam generators
IPC: F22B13/02
Filed: 1924-03-17
Abstract: 226,075. Plane, M. G., and Thorpe, J. R. March 17, 1924. Vertical boilers; water chambers in fireboxes. -In a water-tube boiler comprising rows of water-tubes 19 surrounding the combustion space and connected to an upper central steam and water drum 12 and to a lower annular drum 5, the upper drum is formed with a cylindrical part 21 extending downwardly to about the level of the bottom of the water-tubes. The extension may be traversed by a tube 20 through which the furnace is stoked. The tube plate 4 is formed with a flange secured to the top of the wall around the furnace chamber 1. The lower drum may be of polygonal form and may be built up of sections. The upper drum may be made by bolting two dished plates together at their edges 15. A superheater 17 is placed between the top of the upper drum and the casing 3.
Patent GB-1463281-A (GB)
Title: Internal shoe drum brake
IPC: F16D65/14
Filed: 1975-02-19
Abstract: 1463281 Mechanical actuators for internal shoe drum brakes HAHN FAHRZEUGBAU GmbH 19 Feb 1975 [2 March 1974] 6964/75 Heading F2E In a mechanical actuator for an internal shoe drum brake comprising a floating lever 4 articulated at 9 to a link 5 and having an arm 7 which bears against one brake shoe 2 and has a portion 16 arranged to slide on surface 18 of backing plate 6, portion 16 is of greather width than the remainder of lever 4. Link 5 is cranked at 20 to clear an operating rod 12 connected to the other arm of lever 4, and has its end connected to the other brake shoe (Fig. 1, not shown). The widened portion may be fabricated by attaching a ring segment to each side of lever 4. Segment 16 also acts as a stop by abutting link 5.
Patent GB-330281-A (GB)
Title: Improvements in or relating to the transmission of radio signals
IPC: H04B7/06
Filed: 1929-03-04
Abstract: 330,281. Dicker, S. G. S., (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). March 4, 1929. Fading, preventing.-In order to radiate a carrier wave with a continuously-rotating plane of polarization, a single horizontal aerial 1 is fed simultaneously with two sets of oscillations, one at medium and the other at high frequency the two being combined non-linearly through a modulating valve. Under these conditions the plane of polarization of the emitted radiation is stated to rotate constantly at medium frequency. Signals are superposed on either the high or medium frequency wave. To improve the conductivity of the earth, one or more conductors 4, of a length approximately equal to the aerial 1, are arranged at any angle to the aerial.
Patent GB-818972-A (GB)
Title: Improvements relating to cat-walks and other like walkways
Inventor: BROWNE FREDERICK CYRIL
IPC: E04F15/06
Filed: 1957-03-02
Abstract: 818,972. Cat-walk for machinery; treads. WINDSHIELDS OF WORCESTER Ltd. March 3, 1958 [March 2, 1957], No. 7017/57. Classes 20(2) and 20(4) A cat-walk around machinery, as in ships engine rooms, comprises platform sections 2 secured to supporting girders 1 by releasable fastening devices 8 having a spring-loaded spindle 9 carrying an arm 10 adapted to be engaged with either a slot 18 or 19 which holds the arm in the release position or in the fastening position with the arm 10 engaged under a girder 1. The arm is disengaged from the slots and moved into position by a key engaged through a hole 17 in the platform with the upper end of the spindle 9. The upper surface of each platform section has slots 23 and treads 22 secured in channels and of tough treated fabric having the upper surface coated with hard granular antislip composition.
Patent GB-180099-A (GB)
Title: Improvements in tongs and like appliances for serving or handling solids and/or liquids
IPC: A47G21/10
Filed: 1921-03-04
Abstract: 180,099. Earley, F. March 4, 1921. Tongs for table use comprise a spoon a, Fig. 1, and fork b or two forks held together in one form by a shackle or sleeve d, in which they are pivotally mounted, the handles being normally held apart by a spring e. In another form, a hookshaped member g, Fig. 4, may be formed integral with the handle a of the spoon with which a pivot on the other member engages, the spring i being attached to the member a, thus allowing detachment for cleaning.
Patent GB-496997-A (GB)
Title: Colour photography
IPC: G03C7/18
Filed: 1937-03-10
Abstract: 496,997. Colour photography. BROOKES, N. E. (I. B. Corporation) March 10, 1937, No. 7057. Drawings to Specification. [Class 98 (ii)] Undesired absorption by colouring matter in colour pictures is compensated for in one colour aspect by forming by the reversal process an uncorrected positive record of light sensitive silver halide emulsion and exposing it before development through another uncorrected but developed colour aspect record which absorbs light to which the aforesaid emulsion is sensitive, and exercises a corrective effect on the record. A film comprising three layers, blue sensitive B, green sensitive G and red sensitive R respectively mounted upon a celluloid backing, is exposed and developed. The R layer is exposed to red light and then developed in colour, e.g. with trichloronaphthol and paraphenylene-diamine to form a cyan dye image. The silver of the negative image is bleached and removed along with the silver of the red positive image by a solvent such as a weakly acid solution of a bichromate. The film is then partially exposed to green light through the backing and the layer containing the cyan positive acts as a mask to modify the amount of silver formed. The exposed image is then developed to magenta, e.g. with a salt of brom-thioindoxyl or of thio-indoxyl-carboxylic acid, and finally re-exposed to green light to expose the remaining silver halide of the green layer. After removal of developed silver in the magenta layer, the B layer is exposed to blue or white light through both the magenta and cyan layers and developed to a yellow colour, e.g. using oc-chlor-ethyl-aceto-acetate and diethyl paraphenylene-diamine. The layer is then fully exposed to white or blue light and the silver removed. The process is applicable to the positive-negative method described in Specification 427,520 which employs controlled diffusion in the developing and bleaching. The colour balance of the corrected film is maintained either by employing more silver halide than usual or by intensification through bleaching and development of the silver in the corrected positive records. Specifications 245,198, [Class 98 (ii)], 376,795, 376,838, 408,991, 415,040, 427,516, and 440,032 also are referred to.
Patent GB-1154631-A (GB)
Title: Improvements relating to Water Heaters.
Inventor: DAVIDSON WILLIAM
IPC: F24H1/14
Filed: 1966-02-17
Abstract: 1,154,631. Hot water boilers. INTERNATIONAL JANITOR Ltd. 12 May, 1967 [17 Feb., 1966], No. 7061/66. Heading F4A. A water heater for gravity circulation comprises a combustion chamber 1 with an oil or gas burner 2 and a finned tube 5 for the water to be heated, the tube extending upwardly from its inlet 6 to its outlet 7 and being bent to form two portions each inclined to the horizontal. The chamber has a combustion air inlet 3 and flue gas outlet 4. The water inlet 6 and outlet 7 are connected to a hot water storage cylinder, the heated water rising up tube 5 to the storage cylinder and cooled water from the cylinder entering inlet 6.
Patent GB-452873-A (GB)
Title: Improvements in or relating to the production of moulded products from thermoplastic materials
IPC: B29C43/02
Filed: 1935-03-07
Abstract: 452,873. Moulding thermoplastic material. CELLULOID CORPORATION, 290, Ferry Street, Newark, New Jersey, U.S.A. March 7, 1935, No. 7150. Convention date, March 7, 1934. [Class 87 (ii)] Elongated articles, such as umbrella handles, fountainpen barrels and pencils, are moulded by heating a solid blank of thermoplastic material, such as nitrocellulose or cellulose acetate, to a temperature at which it softens under pressure, while it is supported in a chamber having substantially the same crosssection as the blank, and pressing it from the chamber into a die cavity which leads smoothly therefrom and of which the cross-section changes along its length so that the blank is moulded progressively while being supported laterally. The die cavity 16 is formed in a member which may be integral with the chamber 14 or separate therefrom and is closed at its upper end by a cap 17 containing an air passage 18. The heated blank is forced by a piston 19 into the die and any slight excess of material enters the passage 18. The die may be heated during the moulding operation and finally cooled to set the plastic material. A decorative band 23 may be incorporated in the article by inserting it in the die before the moulding operation. Hollow articles, such as pen barrels or caps; are formed by supporting a mandrel 31, Fig. 5, in the die which pierces the blank and causes it to flow into the annular space surrounding the mandrel. Air passages 34 are provided. For producing articles having a reinforcing inner metal tube, the tube 39 is placed over the mandrel and becomes united with the plastic material. A reduced flange may be formed on the upper end of the article by a collar which may be inserted between the die and the cap 32. When forming tubes having concave or convex exterior contours, the die may be divided either laterally or longitudinally so that it may be separated to release the moulded article. For products having complicated shapes a composite die, Fig. 10, may be used comprising a number of sections 59 which interlock when assembled. The blank may be formed by extrusion or cut from a block and is of approximately the form of the desired article. Pearl essence or scintillating particles may be incorporated in the material. The Specification as open to inspection under Sect. 91 comprises also a modification in which a thin membrane of foil, paper, &c. is wrapped round the blank and is ruptured during moulding to produce a submerged pattern. This subject-matter does not appear in the Specification as accepted.
Patent GB-795509-A (GB)
Title: Improvements in or relating to apparatus for regulating the intervals of travel of the despatch-carriers in a pneumatic tubular despatch-conveying installation
IPC: B65G51/22
Filed: 1957-03-04
Abstract: 795,509. Pneumatic despatch apparatus. SIEMENS & HALSKE AKT.-GES. March 4, 1957 [March 3, 1956], No. 7183/57. Class 78 (1). Apparatus for despatching carriers 13 at regular intervals comprises a reciprocating block 1 which is bored transversely at 2 to receive a carrier and moves in a housing 3 from a position in which the bore registers with an inlet pipe 19 to one in which it registers with a despatching pipe 15. Carriers can accumulate in the pipe 19 but are fed singly at regular intervals to the pipe 15 which operates at a pressure different from that of the pipe 19. The block 1 has a nut 7 secured to it resiliently which is engaged by a screw-threaded spindle 6 connected to the shaft of the motor M. A chamber 10 on the underside of the housing contains contacts vk, bkl and bk2. The contact vk extends into the housing and is closed to start the motor when a carrier falls on it. This causes movement of the block to the left until an abutment 16 carried by it actuates the switch bk2 to stop the motor. In this position the carrier falls into the tube 15 and in its descent actuates a running contact fk to start the motor in the opposite direction. When the abutment reaches the contact bk1, the motor is switched off and braked and the cycle starts again when a carrier falls on to the contact vk. The contacts bk and bk2 are secured adjustably in the chamber 10. The mouth of the bore is cut away at 18 in order that a carrier 13<SP>1</SP> resting on a carrier in the bore shall be lifted as the block moves to the left and does not impede the movement.
Patent GB-841359-A (GB)
Title: Improvements in or relating to distributed amplifiers
IPC: H03F1/20
Filed: 1959-03-03
Abstract: 841,359. Valve amplifying circuits. TELEFUNKEN G.m.b.H. March 3, 1959 [March 4, 1958], No. 7331/59. Class 40(6). A distributed amplifier uses neutralized triodes. In one embodiment (Fig. 1) the anode line is balanced to earth and the anodes connected to one side, the anode to grid capacities Cl &c. being balanced by neutralizing condensers C4 &c. connected to the corresponding points on the opposite side of the balanced line: the output is obtained via a transformer T with a balanced primary. In an analogous circuit, the grid line is balanced instead of the anode. An alternative arrangement uses only one line, of the balanced type, to which the input is applied in push-pull and from which the output is obtained push-push or vice-versa. In one embodiment (Fig. 2) the grids are connected for A.C. to one side of a push-pull driven line which the anodes drive push-push by means of centre-tapped chokes 1 &c., the anode to grid capacities Cl &c. being balanced by neutralizing condensers C4 &c. connected to the corresponding points on the opposite sides of the line. The grid to cathode capacities C10 &c. also have to be balanced by corresponding condensers C13; the output is obtained via a transformer A with unbalanced primary. The specification also describes an embodiment (Fig. 3, not shown) in which the input is in push-push and the valves in groundedgrid connection and a further embodiment (Fig 4, not shown) in which the valves are in grounded anode connection.
Patent GB-311864-A (GB)
Title: Improvements in gas valves
IPC: F23D14/48
Filed: 1928-03-09
Abstract: 311,864. Falkner, A. J. March 9, 1928. Atmospheric gas burners.-The injector needle 8 of the nipple of a gas burner is adjusted simultaneously with the operation of the gas valve by the interengagement of cam surfaces 6 on the handle 4 of the valve plug 2 and either the valve body 1 as shown. in Fig. 1 or an arm 18 carried by a screwed sleeve 17 on the needle as shown in Fig. 3. In Fig. 1 the needle is adjustably threaded in a washer 10 which is held in contact with the handle 4 by a spring 12. In Fig. 3 the spring 12 acts directly on the sleeve 17. The injector end of the needle may be cylindrical and formed with grooves 9 having their effective cross-section greatest at the middle.
Patent GB-843298-A (GB)
Title: Method of manufacturing semi-conductors with junctions
IPC: C30B15/20
Filed: 1958-03-07
Abstract: 843,298. Semi-conductor devices. STANDARD TELEPHONES & CABLES Ltd. March 7, 1958 [March 13, 1957], No. 7422/58: Class 37. A method of making a semi-conductor monocrystal comprising a layer of one conductivity type between two layers of the opposite type comprises the steps of pulling from a melt containing a donor (acceptor) impurity a zone of one conductivity type, adding to the melt an amount of the same or another donor (acceptor) impurity and a suitable amount of an acceptor (donor) impurity with a higher diffusion constant than the additional donor (acceptor) impurity, pulling a further zone of said one conductivity type containing all three impurities, and subsequently heating the resulting body to preferentially diffuse the acceptor (donor) impurity into the first zone to form a P(N) zone therein. In one example the semi-conductor is silicon, the first and additional amounts of donor impurity are antimony and the acceptor boron or aluminium. In another embodiment, using germanium, the first and additional amounts of acceptor impurity are gallium and the donor antimony.
Patent GB-1292053-A (GB)
Title: Photographic exposure control arrangement
Inventor: HINDS DAVID
IPC: G03B7/093
Filed: 1969-02-11
Abstract: 1292053 Exposure control VICKERS Ltd 6 Feb 1970 [11 Feb 1969] 7440/69 Heading G2A An automatic exposure arrangement for an electromagnetic shutter having a coil (1), Fig.1C (not shown) and a control circuit, comprises means for initiating an exposure; a photodetector, e.g. a cadmium sulphide cell (13), Fig. 1A (not shown) responsive to light incident from an object so as to charge capacitance means (14a, 14b); a uni-junction transistor (18) acting as a voltage level detector so as to discharge the capacitance means whenever the voltage thereacross reaches a predetermined level, thereby to produce a series of pulses at a rate proportional to the light intensity; a pulse counter (21) for counting the pulses from the uni-junction transistor (18) and giving an output signal in response to a predetermined number of input pulses; and means responsive to such an output signal for terminating the exposure. In use, an exposure initiating switch (8), Fig.1B (not shown) is closed so as to discharge a capacitor (7a) which thereby triggers a control thyristor (2), Fig.1C (not shown) to open the shutter and light a signal lamp (3). Closing the switch (8) also results in a transistor (24), Fig.1B (not shown) being momentarily switched on so as to reset the counter (21) to zero and to ensure that whichever capacitor (14a, 14b) is in use is initially discharged. The capacitor in use is selected in dependence on the film speed. Light incident on the photo-detector (13) results in pulses being fed to the counter (21), an output therefrom being provided in response to a predetermined number of pulses. This output switches off a transistor (4), Fig.1C (not shown) and results in a monostable multi-vibrator (28) being temporarily switched out of its quiescent state, so that a pulse therefrom switches on a first transistor (5), Fig.1B (not shown) so as to discharge a capacitor (6) and thereby close the shutter. The multi-vibrator (28) is used to produce an indication of the exposure time to be expected. A neon flash circuit (29) is incorporated to indicate long exposure time. The control thyristor (2) can be short-circuited to provide manual operation of the shutter.
Patent GB-212743-A (GB)
Title: Milk can
IPC: A01J9/00
Filed: 1923-03-15
Abstract: 212,743. Higginbotham, J. B. March 15,1923. Cans; lids and covers. - A milk-can comprises an ovalshaped body part a, Fig. 3, formed from a blank of tin plate having the edges seamed together and soldered, a flanged bottom d being soldered to the lower edge of the body. The upper edge of the body is folded over a strengthening wire in which are formed a hanger h and eyes e for the attachment of a bail handle g. The folded edge also encloses one arm of the hinge loop v of the lid. The lid consists of two stampings l, l<1>, Fig. 2, flanged into one another and soldered together. A separate attachment lug e<2>, Fig. 3, is provided.
Patent GB-326984-A (GB)
Title: Improvements in or relating to wireless circuits
IPC: H03J3/28
Filed: 1929-03-07
Abstract: 326,984. Gramophone Co., Ltd., and Bailey, C. E. G. March 7, 1929. Thermionic amplifiers.-In a wireless circuit comprising two. or more tunable oscillatory circuits wherein a portion only of the inductance 1 in one of the tunable circuits is included in the circuit between the earth and aerial a condenser 12 is shunted across a portion only of the inductance 7 in the other tunable circuit. The condenser 12 is preferably variable and shunted across the same amount of the inductance 7 as the amount of inductance 1 in the aerial circuit. The tuning controls for the tunable circuits are preferably interconnected.
Patent GB-495760-A (GB)
Title: Impregnating composition
IPC: B27K3/52
Filed: 1937-03-15
Abstract: 495,760. Proofing permeable materials ; treating wood. HODNEFIELD, O. March 15, 1937, No. 7587. [Class 140] Materials such as wood are rendered fireproof, waterproof, weatherproof and immune from the attack of insects by impregnation with a solution in ammonia of the reaction product of ammonium sulphate, ammonium phosphate, boric acid, colemanite, phenol, barium hydroxide, tin chloride and an alginate such as copper sodium alginate. Ammonium sulphate may be replaced by magnesium carbonate and ammonium phosphate by phosphoric acid. The composition is preferably made by mixing two aqueous solutions (a) containing ammonium sulphate, ammonium phosphate, boric acid, colemanite, and phenol, to which sodium fluoride, mercuric chloride and zinc chloride may be added, and (b) containing barium hydroxide, tin chloride, copper sodium alginate and ammonia to which aluminium ammonium sulphate, sodium bicarbonate, benzaldehyde, oil stains, pigments, dyes, and gum acacia or casein glue may be added. The solutions are mixed at a temperature of about 100‹ F., and under a pressure of about 150 lb. per square inch. In place of ammonia, solvents such as alcohol or an acetic-ether acetone mixture may be used. Wood is first steamed at low pressure, placed under vacuum and allowed to absorb the solution at 75 to 125‹ F. Pressure up to 150 pounds per square inch is then applied, surplus solution is withdrawn and the wood dried under slight vacuum and raised temperature. The treated wood may be painted or varnished.