baber/WOPTO huggingface dataset:
Patent GB-1247104-A (GB)
Title: Ac poly-phase variable speed brushless and commutatorless electric machine
IPC: H02P6/24
Filed: 1969-04-17
Abstract: 1247104 Electric motors; core constructions TOYO DENKI SEIZO K K 17 April 1969 [19 April 1968 19 July 1968 28 Oct 1968] 19572/69 Heading H2A A polyphase brushless synchronous machine comprises a cyclo-converter 2, Fig.1, connected to the armature windings U, V, W, and connectable to a polyphase supply, a rotor position sensing device, a signal generator 13 producing output signals representative of line current and of the difference between the desired and actual speeds of the machine, and a logic control device supplied from the signal generator and the rotor position sensor to produce control signals for the converter. The rotor position sensing device comprises a light bulb and three photo-transistors arranged to produce 180 degree outputs in each transistor, these outputs being converted to 120 degree signals in a further signal generator 8. The outputs of the two signal generators 8, 13 are fed to a gate signal generator 14 controlling the cyclo-converter to produce various operating modes of the machine, e.g. bi-directional motoring and generating modes. The machine shown in Fig.10 has interdigitated rotor poles 4a, 4b, magnetized by a D.C. energized winding 7a, 7b, mounted on the stator. In a modification, Fig.11 (not shown), the rotor and stator cores are both substantially E-shaped in axial cross-section, the rotor having three axially displaced poles S-N-S, and the D.C. energized winding is located between the limbs of the stator core.
Patent GB-293427-A (GB)
Title: Pump for combustion motors
IPC: F02M59/34
Filed: 1928-07-06
Abstract: 293,427. Parchet, A. RateIIier-. July 6, 1927, [Convention date]. Single-acting suction-valveless piston pumps; valves, arrangement of.-A pump for fuel &c. comprises a barrel 1 provided with an outlet 4 controlled by the plunger 2 and one or more outlets 5 controlled by a plunger 3, which is pressed down by a spring 7 engaging a head 3<1> on the plunger 3. The head moves between two adjustable stops 10, 12, the stop 10 being held down by an adjustable spring 13. During the upstroke the plungers 2, 3 travel together with the liquid between until the head 3<1> engages the stop 10. The plunger 2 then moves alone until the pressure of the liquid is sufficient to overcome the spring 13. The two plungers then move together until the port is opened and the liquid is delivered. Adjustment of the stop 12 varies the volume of the chamber between the plungers and thus the amount delivered. In another form the stop 10 is a piston exposed on its upper surface to air &c. pressure.
Patent GB-1405838-A (GB)
Title: Peristaltic pumps for void-free fluid asphaltic materials
IPC: F04B43/00
Filed: 1973-04-25
Abstract: 1405838 Rotary positive-displacement fluidmachines WIBAU WESTDEUTSCHE INDUSTRIE-U STRASSEN-BAUMASCHINEN GmbH 25 April 1973 [25 April 1972] 19686/73 Heading F1F In a peristaltic pump for an asphaltic material in a fluid state such as a molten mastic asphalt, the pumping tube 5 is made of a heat and bituminous resistant material e.g. rubber, or a plastics material, containing filling agents and/or additives to render it capable of withstanding a temperature of 200 to 240‹C, and means is furnished to sustain the temperature of the asphaltic material in said tube in a pumpable state. The peripheral wall of a housing 1, a charging trough 9 and a discharge conduit 12 may therefore be provided with heating jackets or ducts 15, 16, 17, the heating fluid being e.g. oil, which is distributed and collected by headers 13, 14. Metal inserts or filling agents may be lodged in the tube to improve its thermal conductivity. For reinforcement the tube may have a steel core (6), Fig. 2 (not shown), which may be similar to that of a motor-vehicle tyre. Rollers 3 on a rotor 2 may be rigid throughout or coated with a material similar in flexibility and resilience to the tube. The peripheral wall of the housing may carry a steel backing strip 7 with a flexible and resilient rubber layer 8 thereon to support the tube. A flexible and resilient member 18 compensates for changes in the lengths of the tube and discharge conduit. To facilitate filling of the tube a negative pressure may be maintained in the housing. A mechanism 10 stirs the material in the trough.
Patent GB-1201557-A (GB)
Title: Carbon tetrachloride manufacture
Inventor: HOLMES WILLIAM SAMUEL
IPC: C07C17/093
Filed: 1968-04-25
Abstract: 1,201,557. Carbon tetrachloride. ALBRIGHT & WILSON Ltd. 25 April, 1969 [25 April, 1968], No. 19762/68. Heading C2C. Carbon tetrachloride is produced by passing carbon disulphide vapour upwardly through a fractionating column, passing a liquid phase downwardly through the column and reacting the carbon disulphide in the column with chlorine and/or sulphur monochloride, wherein the liquid phase comprises a suspension of a finely divided solid catalyst for the reaction in carbon tetrachloride and/or sulphur monochloride.
Patent GB-583508-A (GB)
Title: Photographic elements
IPC: G03C1/825
Filed: 1944-10-13
Abstract: 583,508. Photographic and radiographic sensitive materials. DU PONT DE NEMOURS & CO., E. I. Oct. 13, 1944, No. 19781. Convention date, Jan. 1. [Classes 98 (i) and 98 (ii)] A photographic element comprises at least one light-sensitive layer and at least one outer layer composed of casein and gelatin in the proportion of 10 to 20 respectively, the outer layer containing a non-diffusing, finely-divided, inert pigment uniformly dispersed therethrough which is absorbent of light to which the lightsensitive layer is sensitive. The outer layer may function as an antihalation layer, but the invention is especially concerned with elements containing two outer pigmented layers for use in radiography. The pigment may be colloidal carbon, finely-divided carbon black or colloidal silver, the amount varying over a wide range, but always sufficient to prevent penetration of diffuse daylight or ordinary room illummation, e.g. one part by weight of pigment to 20 parts of colloid or two parts of pigment to one part of colloid. The pigments are dispensed in an aqueous solution of gelatin and casein, wetting or dispersing agents being added such as ammonium alkyl sulphates, e.g. sodium octyl sulphate, sodium tetradecyl sulphate, sodium hexadecyl sulphate, ammonium octadecyl sulphate, and sodium oleyl sulphate ; lower alkyl (1-4 C atoms) naphthalene sulphonic acid salts, e.g. tri-isopropyl naphthalene sulphonic acid ; alkane sulphonic acid sodium salts, e.g. sodium n-hexadecane sulphonic acid ; and the condensation products of ethylol cyanamides with, e.g. lauric, stearic and palmitic acids. The coating is done by spreading, spraying, dipping, transfer or beading rollers. In the examples, the cellulose acetate base with or without a thin coating of nitrocellulose, is coated on each side with gelatin and then the silver halide emulsion, followed by the dispersion composition. After exposure, the outer layers are easily removed by soaking in water and swabbing -with cotton. The layers are stated to be abrasion-resistant and to have good anti-static properties.
Patent GB-264085-A (GB)
Title: Improvements in sack-darning machines
IPC: D04B17/00
Filed: 1926-08-11
Abstract: 264,085. Leiserowitz, A. S. Aug. 11, 1926. Pressers with periodic control; presser-feet.--- In a sack darning machine the presser-foot is lifted by the engagement of a stud on the needlebar with a two-armed lever forming part of or directly engaging the presser-foot. The presserfoot is formed on a lever 6, 7 pivoted between plates 3, 4 forming a frame which is pressed by a screw 5 to the presser-bar 2. A lever 10, 11 is pivoted above the lever 6, 7 and the part 10 is engaged by a stud 16 on the needle-bar in its rising movement so that the foot 6 is raised against the action of a spring 9. In a modification, shown in Fig. 6, the presser-foot is formed on the lever 6, 10, which is engaged by the needlebar.
Patent GB-461799-A (GB)
Title: Improved manufacture of chromium hydroxide green
IPC: C01G37/02
Filed: 1936-07-17
Abstract: In the production of chromium hydroxide green, a mixture of alkali dichromate and boric acid is heated with sulphur, say to 600--620 DEG C. and the reaction product treated with water in known manner to decompose the chromium borate formed.  The addition of sulphur in the heating step produces a product of greater transparency and of darker colour.
Patent GB-1497430-A (GB)
Title: Earth terminal for satellite communications
IPC: H04B7/15
Filed: 1975-05-12
Abstract: 1497430 Stand by facilities in satellite communication system earth stations; parametric amplifiers COMMUNICATIONS SATELLITE CORP 12 May 1975 [31 May 1974] 19874/75 Headings H4L and H3X An earth terminal for transmitting data to and receiving data from two or more earth orbiting satellites in a satellite communication system incorporates: (a) an antenna 11 with a fixed reflector apparatus and a separate feed, e.g. 12 1 , 12 2  for each satellite with which the terminal communicates; (b) a transmitter for each separate antenna feed, including a number of identical high power amplifiers, e.g. 22 1 , 22 2 , 30, exceeding the number of communication channels, the band width of each amplifier being equal to or slightly greater than the total satellite communication band, a modular filter matrix 24 divided into the same number of contiguous frequency bands as the number of channels, and switching arrangements 31 for connecting amplifiers to the channels of the filter matrix, the remaining amplifiers being spares which can be substituted by the switching arrangement when any amplifier fails; (c) a low noise receiver 15 connected to each separate antenna feed, including an uncooled parametric amplifier having independent identical interchangeable parametric amplifier modules connected in cascade by an integrated multi-port microwave circulator, whereby the modules can be removed and replaced without interruption to service. The terminal may transmit and receive two orthogonal polarizations, and the antenna may then include a polarizer and orthomode transducer 14 connected to each separate feed to isolate the orthogonally polarized transmit and receive signals. The feeds 12 1 , 12 2  &c. for the separate satellites may be horns which are positioned and steered to a limited extent to follow the satellite by a sliding carriage 52 controlled from the central control facility 43. The receiver may incorporate a parallel redundant transistor amplifier coupled to the parametric amplifier output, followed by a frequency demultiplexer 16, each channel thereafter incorporating a down converter 17, IF filter 18, demodulator 20 and baseband processor 21. The transmitter incorporates complementary components 33, 34, 35, 36. Monitor and control arrangements 44, 45, 46 connected to the transmitter and low noise receiver transmit operating data over one of the communication links to a central monitoring and control facility. Parametric amplifier (Fig. 2) incorporates a succession of circulators, to an input of the first of which, 102 1 , the received signal input is applied. The second arm of this has coupled to it a varactor diode modulator 105, supplied from a Gunn oscillator 104. The third, output, arm of the circulator supplies a further identical stage based on circulator 102 3  via an isolating circulator 102 2 . The amplifier contains a further stage similarly arranged. If any stage becomes inoperative, the amplifier continues to function, albeit at slightly lower efficiency.
Patent GB-354019-A (GB)
Title: Improvements in protective masks for the use of welders
IPC: A61F9/06
Filed: 1930-07-01
Abstract: 354,019. Face masks. GREENE, H. C., 54, Daniels Avenue, Vallejo, NORTON, J. S., 112, 7th Street, and HOLLINGSWORTH, W. F., 104, 7th Street, San Francisco, both in California, U.S.A. July 1, 1930,No. 19978. [Class 97 (i).] A protective mask for the use of welders is provided with a hinged lens or window which can be opened by means of a yoke operated by the user's chin, and a detent for holding the lens open against the action of a spring tending to close it. The mask 2 is pivoted to a headband 1 and carries the lens or window 4 on pivots 5. The lens frame has projections 14 from which is pivotally suspended the yoke 15 provided with an extension 18 on which is adjustably mounted a member 20 for engagement with the wearer's chin, so that downward movement of the chin causes the lens to be opened against the action of springs 23. For retaining the lens in its open position a link 24, Fig. 5, is pivoted to the mask and is engaged by a U-shaped member 26 carried by the yoke, a notch 28 being formed in the link which the member 26 enters when the lens is open. Further depression of the chin moves the member 26 downwardly out of the notch and allows a pivoted bridging member 29 to close the entrance to the notch so that when the chin is moved upwards the member 26 can ride along the link 24 to allow the lens to close. A band 32 prevents tilting movement of the mask as a whole when the chin is depressed.
Patent GB-147950-A (GB)
Title: Improvements in safety control means for four-cycle gas engines
IPC: F01L1/00
Filed: 1920-07-09
Abstract: 147,950. Schmitz, H. Nov. 11, 1913, [Convention date]. Drawings to Specification. Fluid relays.-The invention relates to fourstroke-cycle internal-combustion engines in which compressed air supplements the normal charge and is used for scavenging. The Specification as open to inspection under Sect. 91 (3) (a) describes an auxiliary governor which controls through a fluid relay a shut-off valve in the compressed air supply pipe, and a switch for cutting out the ignition should the normal governor fail. This subject-matter does not appear in the Specification as accepted, but forms the subject-matter of Specification 166,139.
Patent GB-1240231-A (GB)
Title: Current feed device for electric lamps
Inventor: SKAGERLUND LARS-ERIK
IPC: G04G9/00
Filed: 1969-04-18
Abstract: 1,240,231. Supply circuits for electric lamps. BOFORS A.B. 18 April, 1969 [18 April, 1968], No. 20046/69. Heading H2H. A lighting system, e.g. for a digital display comprises a number of lamps which may be illuminated in any desired combination. The lamps 12-18 are connected in series with each other and with a constant current device across a D.C. source 9, 10. The constant current device comprises a resistor 29 and a transistor 11, the base of which is connected to a potentiometer 20. In parallel with each lamp, there is connected the collector-emitter path of a transistor 22-28, the base voltage of which is controlled, so that the corresponding lamp may be shortcircuited, the current through the other lamps remaining constant. The transistors 22-28 may be replaced by relays or other switching devices.
Patent GB-293799-A (GB)
IPC: B63B19/00
Filed: 1928-07-10
Abstract: 293,799. Atlas-Werke Akt.-Ges. July 12, 1927, [Convention date]. Operating and controlling doors hydraulically.- Bulkhead doors 5 are opened and closed hydraulically from a control station 3 or locally by a system containing a floating piston 10 in a cylinder 9 which is connected at its middle portion to a door-operating cylinder 12 and is disposed on the pipe line near the bulkhead door, each end of the cylinder 9 being connected to a separate four-way valve positioned locally, one of the valves, 16, being adapted to be put into communication with a door-opening pipe and with a discharge-water pipe, the other valve 18 being loaded and in direct communication with the valve 16, but being adapted to be set independently and being always directly connected to the cylinder 12 and adapted to open and close the door independently of the valve 3. The arrangement provides that doors which are closed from a central station may be opened locally. When the valve 3 is set as shown for '' doors open," pressure fluid passes from the reservoir 1 through the pipe 4 to the valve 16, Fig. 2, then through the pipe 17, valve 18 and pipe 19 to the cylinder 12, discharge water passing through the pipe 11, cylinder 9, pipe 15 and valve 16 to the pipe 7 leading to a container 8. By moving the valve 16 into the position shown in Fig. 1 the pressure fluid is led through this valve to the pipe 11 and the upper part of the cylinder 12, to close the door. When the valve 3 is moved to the " doors closed " position, the pipe 2 communicates with the pipe 6 and pressure fluid passes through the valve 18 and pipe 20 to the cylinder 9, the piston 10 being moved to the right-hand side so that pressure fluid passes through the pipe 11 to the upper part of the cylinder 12, discharge water passing through the pipe 19 to the pipe 4, which now is in communication through the valve 3 with the pipe 7 and reservoir 8. By lifting the loaded handle 21 of the valve 18 near the door pressure fluid passes to cylinder 12 to open the door, the handle of the valve 16 being either in the raised or lowered position.
Patent GB-237442-A (GB)
Title: Process of constructing fire resisting safes
IPC: E05G1/024
Filed: 1924-08-26
Abstract: 237,442. Kings Patent Agency, Ltd., (General Fireproofing Co.). Aug. 26, 1924. Moulding safes.-Fireproof safes are made by using a previously constructed hollow metal doorframe as the bottom of the mould in which the safe is cast. Corner-plates 1 with holes 2 are fitted on the foundation 3 and side supports 5 with a detachable part 5<a> and end supports 6 are placed thereon, Fig. 1. The previously-made door-frame A with the attached frame B, is placed on these supports, as shown in Fig. 14, so that the frame A constitutes the bottom of the mould for the safe. The outer walls 7 of the mould are fitted by engaging projecting angleirons 9 with pins 10 and angle-irons carried by the corner-pieces 8 which are held by pins 8<a> engaging the holes 2 in the corner-plates 1. The inner mould walls 11 are similarly held by corner-pieces 12. Reinforcement 15, such as expanded metal or wire mesh, is added and cement poured into the mould. Corner-plates 17 and side pieces 16, Fig. 13, are placed on top of the filled mould and a projection 18 on these pieces produces a recess H in the back of the walls of the concrete safe. Holes 16<a> in the pieces 16 permit extensions of the frames B to protrude. A back panel C is separately moulded and has a reinforcing plate C<38> with angle-irons C<37> which are welded or riveted to the frame B when the panel is fitted to the back of the safe, Fig. 20. The panel has also a projection H<1> fitting in the recess H in the safe walls. The projection H<1> is cemented in the recess H when the panel is applied to the safe. The door is completely encased in metal. Metal plates 61 are fitted to the sides of the safe and engage with the door frame A. A back plate 65 has flanges 64 sliding in folds 63 of the side plates, Fig. 22. Top and bottom plates are also fitted. The casting is oven-dried after moulding.
Patent GB-873503-A (GB)
Title: Improvements in or relating to self-tapping nuts for wood screws and the like
Inventor: HOLT JOHN LAPWORTH
IPC: F16B37/00
Filed: 1958-06-24
Abstract: 873,503. Nuts. HOLT Ltd., JACK. June 24, 1959 [June 24, 1958], No. 20210/58. Class 89(1). A nut made from nylon or similar plastic material, for use with wood-screws, has a conical body 1, with a plane bore 2 which has a thread formed therein by the screw, during use.
Patent GB-671886-A (GB)
Title: Drop hammers of the gravity type
IPC: B21J7/44
Filed: 1950-08-16
Abstract: 671,886. Drop hammers. CHAMBERSBURG ENGINEERING CO. Aug. 16, 1950 [April 7, 1950], No. 20317/50. Class 83 (iv). In a drop hammer having a fluid-pressure piston for raising the tup and controlled by a lever which is operatively connected to a valve, a member movably mounted on the lever is actuable relative to the lever into the path of travel of the tup for engagement thereby on the upward stroke to close the valve. In a machine of the type described in Specification 621,529, in which the movement of the ram is automatically controlled by the engagement of tup 7 at the top and bottom of its stroke with dogs 25, 26 on the ends of a lever 22 actuating a valve 10, a third dog member 35, which may be selectively moved into the path of the tup, is mounted on the lever 22 below the upper dog 26. The dog 35 comprises an " L "-shaped piece 43, Fig. 6, pivoted at 39 on the lever 22 and normally falling into an inoperative position, but which is projectable into the path of the tup and locked in the projected position by a sleeve 40 slidable on the lever 22. The sleeve is forced downward by pressure-fluid in a cylinder 41 on the sleeve and containing a piston 44 pivoted at 47 to the lever 22, a spring 49 between the piston and cylinder normally retaining the sleeve 40 in the raised position. In operation, the pressure-fluid is passed to the cylinder 41 through a pipe 50 from the supply line 31a by the depression of a valve 52, the dog 35 being moved into the path of the tup by the engagement of the sleeve 40 with a cam face 37a on the member 43 which is further positively locked in the projected position by a face 40a on the sleeve 40. The valve 52 is disposed on the underside of the main operating treadle 34 so that the operator may alternatively depress the treadle for normal operation of the machine or may depress the treadle and valve simultaneously to establish a shorter stroke.
Patent GB-771066-A (GB)
Title: Improvements in or relating to deflection means for cathode ray tubes
IPC: H01J29/76
Filed: 1954-07-12
Abstract: 771,066. Electric coils. VISSEAUX SOC. ANON., J. July 12, 1954 [July 10, 1953], No. 20383/54. Class 35. [Also in Group XL (a)] Each coil of a cathode-ray tube deflecting system has turns shaped as in Fig. 4 when developed in flat form. A printed coil 2, Fig. 5, is folded about the line 3 to form the coil 4, Fig. 6. Four coils on a common backing are bent around the tube neck to form a complete system. Several coils may be piled together and connected in series before or after they are folded. Each coil is made by gluing a conducting foil on an insulating sheet, photographically printing on the foil a picture of the coil, and after developing and washing, etching away unprotected areas.
Patent GB-686759-A (GB)
Title: A method of rendering whale meat suitable for human consumption
IPC: C11B1/10
Filed: 1949-08-05
Abstract: To render whale meat suitable for human consumption, the raw whale meat is dried at a temperature insufficiently high to prevent, on rehydration, reconstitution of water-soluble protein originally present in the raw meat, and under such conditions that water-soluble tasty compounds are kept in the dried product, and fat is removed from the dried product by extraction with an organic solvent free from water, e.g. benzine of boiling range 40-70 DEG  C.  The drying may be aboard a floating factory and the extraction ashore.  An example is concerned with drying finely cut whale meat at 100 DEG  C. to 55 per cent water content in a horizontal, steam-jacketted cylinder provided with a stirrer, drying further to 6 per cent water content in tunnel, cabinet or conveyer drier, thereafter stirring the dried product with benzine and filtering, twice, and removing the last traces of benzine under vacuum.