baber/WOPTO huggingface dataset:
Patent GB-1058199-A (GB)
Title: Piezoelectric resonators
IPC: H03H9/17
Filed: 1964-05-19
Abstract: 1,058,199. Piezo-electric devices. CLEVITE CORPORATION. May 19, 1964 [May 20, 1963], No. 20686/64. Heading H1E. A Piezo-electric resonator comprises a thin wafer 30 of piezo-electric material having an inner region " a " and an outer region " b " of the same piezo-electric or different material surrounding the inner region " a ", the outer region having a higher resonant frequency than the inner region (b inner: b outer equals 0À8- 0À999), and so acting as a cut-off for the resonant frequency of the inner region. Several resonators " a " may be mounted, uncoupled, on the same wafer 30. The inner regions " a " may be formed: by depositing a layer of material, e.g. electrodes 32 of silver, copper, nickel, gold or aluminium, on a quartz wafer or a layer of silicon oxide or glass, on the wafer; by thinning the piezo-electric wafer between the regions " a "; or by making the device of piezo-electric material e.g. quartz, in the regions " a " and of some other material e.g. aluminium or fused quartz in the surrounding regions " b." In examples, the regions " a " and " b " can be formed from monocrystalline or ceramic materials of different densities bonded together by glass, or from glass pellets selectively diffused into the surface of a ceramic wafer. The piezoelectric material may be quartz, Rochelle salt, dipotassium tartrate, lithium sulphate, or AT- cut quartz, or polarizable ferroelectric ceramic material, e.g. barium titanate or lead zinconatelead titanate, operated in a thickness shear, thickness twist or torsional mode.
Patent GB-189836-A (GB)
Title: Improvements relating to last stands for use in making and repairing boots, shoes and the like
IPC: A43D5/02
Filed: 1922-05-05
Abstract: 189,836. McCafferky, M. May 5, 1922. Last supports for hand work.-A last-support for use in making and repairing shoes comprises a vertical arm A and a horizontal arm B, locked together in a boss b<1> and socket C, and secured by a screw and nut a to a table E. The socket C rotates with the arm B on a foundation D screwed to the table, and the socket is retained. in various positions by a spring lock c engaging holes d<1>. The socket is further secured by attached' thumb-screws (not shown) engaging other threaded holes d<1> in the part D. The arm B is carried at the outer end by a support b sliding on the table E. The toe rest f<6> is carried on a vertical rod F adjustable along the arm B by a screw f. Within the part F is a screw f<2> operated by a hand-wheel f<3>. The upper boss of the hand-wheel is squared to engage a squared sleeve f<8>. This sleeve has a slight vertical play so that it can be raised to disengage the handwheel and be rotated in either direction.
Patent GB-1109712-A (GB)
Title: Method for the manufacture of laminated bus bars
IPC: H01B7/00
Filed: 1966-05-11
Abstract: 1,109,712. Bus-bars. BROWN, BOVERI & CIE A.G. 11 May, 1966 [18 May, 1965; 21 Jan., 1966], No. 20846/66. Heading H1A. The laminated bus-bar shown of which the laminated sections are insulated from each other by synthetic resin is formed from identical laminated members 1 all of which carry connecting lugs 2, 3 in all the possible connecting positions, the surplus lugs being removed before assembly to form a composite bar as shown. The laminations may be glued and baked together. The central bend 5 may be applied to each lamination separately or the laminations may be clamped as at one end and bent as a whole. Lugs 2 may be bent over, drilled and cut to the same length (Figs. 5 and 6, not shown) and the ends of the laminations may be bent at right-angles to the length of the laminations to provide end terminals. The surplus connections are cut away by a die so set that the smallest required distance between lugs is produced by a single working stroke, larger intervals requiring several working strokes. The edges of the assembled bar may be sealed. In an alternative arrangement (Figs. 7, 9, not shown) each lamina conductor is cut from a strip by a tool which removes the surplus material and leaves only the required larger lugs while a further tool operating simultaneously cuts free the required smaller lugs.
Patent GB-422216-A (GB)
Title: Shaving brush for use with liquid soap
IPC: A46B11/02
Filed: 1933-07-25
Abstract: 422,216. Brushes. FISK, R. A., Bangalore, Headstone Drive, Wealdstone, Middlesex. July 25, 1933, No. 20883. [Class 19] A reservoir shaving - brush for use with liquid soap comprises a flexible rubber handle c detachably attached to a brush stock b by a projection g fitting into a groove f. Soap is fed by a rubber tube with restricted outlet h to the bristles. Reference has been directed by the Comptroller to Specification 226,119, [Class 19].
Patent GB-276651-A (GB)
Title: Amplifiers for wireless receiving sets
IPC: H03F13/00
Filed: 1927-08-09
Abstract: 276,651. Renaud, C. A. Aug. 24, 1926, [Convention date]. Magneto-microphonic relays.-In an amplifying device for wireless telephony and telegraphy in which variable contacts operated by thediaphragm of an ordinary microphonie device are included in an amplifying circuit, the contacts are mounted in a tube carried by the said diaphragm. A metal socket e<2> Fig. 1, fixed to the diaphragm e carries a carbon contact e<1> and has screwed thereon a tube n closed by a screwed head n<1> through which passes a rod o. A head o<1> on the rod o carries a carbon point d<2> pressed against the contact e<1> by a spring o<2> to an extent limited by a nut p variably positioned on the rod n. In a modification, the rod o is screwed into the head n<1>, and the head o<1> is separate therefrom. The carbon point is guided in a narrowed portion n<3> of the tube n, between which and thehead o' a compensating spring o<3> is positioned.- Specification 263,769 is referred to.
Patent GB-1432918-A (GB)
Title: Motor vehicle drive having a hydrodynamic braking device
IPC: F16D57/02
Filed: 1974-05-13
Abstract: 1432918 Hydrodynamic brakes VOLVO AB 13 May 1974 [15 May 1973] 21027/74 Heading F2E A drive for motor vehicles comprising a clutch having a driving member, e.g. housing 3 and pressure plates 4, 5, and a driven member, e.g. discs 6, 7, the driven member(s) being connected to an egress shaft 8, and a hydrodynamic braking device having a rotor 14 mounted in a frame, e.g. fixed clutch case 9, containing a stator 11, is characterized in that the rotor 14 is connected to the driving member of the clutch by means of a hollow shaft 15 concentric with shaft 8. As shown, shaft 15 is connected by splines to a driver member 18 which is in turn rigidly connected to the clutch housing 3.
Patent GB-668728-A (GB)
Title: Improvements in or relating to television and like transmitters
Inventor: COOPER VICTOR JAMES
IPC: H04N5/16
Filed: 1948-08-10
Abstract: 668,728. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. June 2, 1949 [Aug. 10, 1948], No. 21105/48. Class 40 (iii). [Also in Group XXXV] The " black " level in a television transmission system is maintained at a predetermined value by means of a control voltage derived from the modulated output of the system and utilized to control the modulation. The invention is applicable to a system of the kind in which the vision and synchronizing signals are transmitted as carrier variations on opposite sides of a predetermined level (i.e. the " black " level) and is described as applied to a transmitter such as that shown in Fig. 1 in which a radio-frequency carrier wave source A is fed to a grid modulated amplifier B to which is also fed the modulation signal from the modulator C. In accordance with the present invention the modulated output from B is rectified at E and fed to a circuit D from which a correcting control voltage is supplied to the modulation source C when the "black" level of the output from B departs from a predetermined value. Fig. 2 shows details of the circuit of D, Fig. 1, and comprises a first stage 3 which separates the synchronizing signals from the vision signals, the former signals then being differentiated in a stage 4 and limited in a further stage 5 to provide narrow pulses for the control of a Schmitt type relay comprising valves 6 and 7 which supplies short duration " opening pulses to a gating valve 8 to allow a " sample of the rectified modulated output (fed to valve 8 over conductor 9) to be passed to an amplifier 10. Succeeding amplifier 10 is a circuit including valves 11, 12 and 14 which provides the required controlling potential. This potential, which is developed across the cathode resistance of valve 14, is then fed to the modulation signal source, e.g. C, Fig. 1, to control its amplitude to compensate for variations in the D.C. level of the transmitted signal.
Patent GB-477682-A (GB)
Title: Improvements in or relating to cup pastry baking machines
IPC: A21B5/02
Filed: 1937-07-30
Abstract: 477,682. Making wafer biscuits. TURNBULL, W. W. July 30, 1937, No. 21132. [Class 28 (i)] In a machine for making pastry cups or cones, a plurality of mould units are employed, each comprising a base part 16 secured to a common rotary carrier 10, a core-carrying arm 27 mounted at its inner end for pivotal and sliding motion, a mould, having pasting cavities, formed in two parts 17, 18, the part 17 being secured to the end of the base 16 and connected to the part 18 by a hinge 19, the parts 17, 18 being held together, when closed, by a pivoted latch 22 which engages an opening 24 in the part 18. The cones 29 are raised from the mould 17, 18 by a roller 42 which rides on a cam rail 43 and the core arm 27 is moved outwards, when the rise begins and the mould part 18 has been swung open by the cam rail 21, by a roller 47 on a pivoted arm 48 which is overweighted by an adjustable weight 51, the inward movement of the arm 27 being controlled by an adjustable stop 38. A roller 40 on the arm 27 co-operates with a fixed cam 45 having a rise 46 which permits the outward movement of the arm. After ejection of the cones, the arm 27, being inclined, slides down until the stop 38 contacts with the pivot pin 26, or, alternatively, the cam 45 may be formed to effect this positively. The mould part 18 is swung closed, locked, arm 27 is lowered by the cam 43, teetered to permit escape of steam, and locked by a pivoted lever 56 having an arm 58 which is forced down by a wheel 60 to apply the locking- pressure on the arm 27. The lever 56 has an adjustable end 57 and the wheel 60 is mounted on a rod 61 pivoted at 62 and under the influence of a compression spring 63. The arm 58 is raised, to release the lock, by a cam rail 59. The cores 29 have spherical surfaces or seats 32 which are received in correspondingly shaped recesses 33 in the core-carrying head 28 of the arm 27. The securing bolts 36 have play in the holes 34, adjustment of the cores 29 to ensure correct centring in the mould parts 17, 18, being thus permitted. Side play of the arm 27 is prevented by sliding surfaces 52, 53 which work in a vertical slot in the support 54 for the locking-lever 56. The mould units may be mounted on an endless chain or on a vertically arranged wheel.
Patent GB-1067733-A (GB)
Title: Stirring, mixing and dispersing device
IPC: B01F33/40
Filed: 1964-05-22
Abstract: 1,067,733. Agitating devices. STUDIENGESELLSCHAFT KOHLE m.b.H. May 22, 1964 [May 27, 1963], No. 21182/64. Heading B1C. An agitating or dispersing device has a rotatable shaft 12 carrying a hollow cylindrical rotor 15 provided with slots 16, and a coaxial tubular stator 21 having slots (22, Figs. 4 and 5 not shown) in the proximity of the rotor; in operation material is sucked into the rotor and expelled through slots 16, 22. The rotor 15, shaft 12 and stator 21 are detachable, and the slots 16, 22 may be axial as shown, transverse, or angled. The bearing housing 3 has a jacket 18 for cooling fluid, and the stator is cooled by conduction. Gas may be supplied to the mixture through conduit 23, or a vacuum pump may be attached thereto. A pressure packing 6 is provided which is supplied with lubricant from a reservoir 9. The device may be inserted in a narrow-necked vessel and may be driven within a sealed housing by a magnetic coupling.
Patent GB-1106812-A (GB)
Title: Production of carbon tetrachloride
Inventor: COLTON JOHN WHITE
IPC: C07C17/361
Filed: 1965-05-19
Abstract: A fully chlorinated hydrocarbon product consisting predominantly of carbon tetrachloride, the remainder being mainly perchloroethylene, is produced by chlorinating with gaseous Cl2 a hydrocarbon or partially chlorinated hydrocarbon having 2 or 3 carbon atoms, the process being carried out at 5-50 p.s.i.g. pressure in the presence of a recycle gas comprising hydrogen chloride and acyclic chlorocarbons.
Patent GB-1280240-A (GB)
Title: Device for use in dispensing beverages containing gas in solution
Inventor: HILDEBRAND SEWARD HAROLD
IPC: B67D1/14
Filed: 1970-05-04
Abstract: 1280240 Mixing in tortuous passages ARTHUR GUINNESS SON & CO DUBLIN Ltd 23 April 1971 [4 May 1970] 21252/70 Heading B1C [Also in Division G3] A device for generating foam in the course of dispensing a beverage containing gas in solution comprises a plate 2 having a plurality of apertures 3 which direct jets of liquid at the upstream face 4a of a baffle 4 having a peripheral clearance in the liquid flow path. The apertures cause cavitation with consequent generation of foam in the chamber between the plate and the baffle. The device may be installed in a dispensing nozzle upstream or (preferably) downstream (see Fig. 3, not shown) of a dispensing valve. The distance between the plate and baffle may be adjustable and is preferably not greater than the diameter of the flow path. The apertures are preferably 0.025 to 0.050 inches diameter.
Patent GB-724369-A (GB)
Title: Improvements relating to electric storage battery plates
Inventor: SMYTH JOHN RIELEY
IPC: H01M4/56
Filed: 1953-07-31
Abstract: 724,369. Batteries. ELECTRIC STORAGE BATTERY CO. July 31, 1953 [Sept. 8, 1952], No. 21258/53. Drawings to Specification. Class 53. In making the paste for lead-acid accumulators by adding sulphuric acid to the oxides, carbonates, or other compounds of lead the whole of the acid is added in a time not exceeding four minutes and not less than half a minute. The lead compounds may first be mixed into a slurry with water. In an example 20 to 100 c.c. of acid is added to each pound of lead compound, the addition of the acid being completed between one and three minutes. After the acid has been added the mixture is cooled to below 125‹ F. in less than twenty minutes.
Patent GB-1325932-A (GB)
Title: Process for producing highly pure isoprene
IPC: C07C7/00
Filed: 1971-04-19
Abstract: 1325932 Purifying isoprene JAPAN SYNTHETIC RUBBER CO Ltd 19 April 1971 [6 Feb 1970 23 Dec 1970] 21294/71 Heading C5E  Purified isoprene is separated from a C 5  cracked fraction by (a) removing a major portion of cyclopentadiene and acetylenes by dimerization (by heat soaking) and distillation, and (b) treating the fraction with a composition made by mixing sodium metal and a C 1 -C 18  aliphatic monohydric alcohol to remove the remaining cyclopentadiene, acetylenes and sulphur compounds. The amount of alcohol should not be more than the equivalent of Na, which may be dispersed in an inactive hydrocarbon medium. Paraffin and mono-olefins may be removed before the Na treatment by extractive distillation. The acetylenes may be removed by azeotropic distillation with isopentane.
Patent GB-1255748-A (GB)
Title: 0,2,3-substituted-4,4,5,5-tetraalkyl imidazolines and imidazolidines
IPC: C07D233/28
Filed: 1969-04-25
Abstract: 1,255,748. Imidazole-derived free radicals and related compounds. SYNTEX ENERGY RESEARCH Inc., and V. ENERGY. 25 April, 1969 [26 April, 1968], No. 21295/69. Heading C2C. The invention comprises compounds of formulµ  wherein R<SP>1</SP>, R<SP>2</SP>, R<SP>3</SP>, R<SP>4</SP> are each (up to C 12 ) alkyl, alkenyl, alkynyl or aryl, or R<SP>1</SP>R<SP>2</SP>C<SP>5</SP> and/or R<SP>3</SP>R<SP>4</SP>C<SP>4</SP> are C 3 _ 10  alkylene or alkenylene; X is I, Cl or Br; D<SP>+</SP> is a cation, and R<SP>5</SP> is an organic group. The preparation of compounds I-IV is illustrated in the following scheme II is also prepared by reacting, e.g. 2,3-bis- (hydroxylamino) - 2,3 - dimethylbutane with ClCO  2 EE; its oxidation to III may be carried out in situ with Br 2 . V is prepared by reacting I with R<SP>5</SP>OH (e.g. as Na salt).
Patent GB-845488-A (GB)
Title: Carpet sweeper
IPC: A47L11/33
Filed: 1958-07-03
Abstract: 845,488. Carpet sweepers. BISSELL Inc., [formerly BISSELL CARPET SWEEPER CO.]. July 3, 1958 [Nov. 21, 1957], No. 21316/58. Class 138(1). A carpet sweeper includes a casing having end walls 3, a handle with a bail having springable arms 9 leading to journals 10 mounted on the walls 3, on which a brush 11 rotates having driven pulleys 18, with which floor wheels 20 coact, supported by spindles 21 mounted on the casing for limited lateral movement relative to the brush 11, dustpans 24 tiltably supported on the spindles 21, and springs 27 mounted on the casing yieldably urging the wheels 20 to drive the pulleys 18 and engaging the dustpans 24 to hold them in their closed position. The dustpans 24 have end walls 25 inward of the wheels 20, the springs 27 being mounted so that their arms are in lapping relation to the walls 25 on which are the studs 32 which are engaged by end portions 33 on the arms to hold the dustpans 24 in their closed position. For support offsets 31 in the springs 27 engage openings 30 in brackets 28 mounted on the end walls 3 and overhanging the pulleys 18. The wheels 20 and dustpans 24 are supported by brackets 23, mounted inwardly of the end walls 3 and having openings 22 for the spindles 21 permitting limited lateral movement. The handle support members 13 on the walls 3 provide bearings which receive the journals 10 on the springable arms of the bail and have flanges 16 notched centrally to support the handle vertically and yieldably permit it to be held horizontally. The casing forms a chamber with walls 2 and 3 having offsets 4 forming a continuous flange 5 engaged by a groove 7 in a bumper 6 to support the latter, against which the outer edge portions 26 of the dustpans 24 seat in the closed position.
Patent GB-642860-A (GB)
Title: Improvements in or relating to electrical apparatus and windings therefor
IPC: H02K11/04
Filed: 1948-08-13
Abstract: 642,860. Windings for dynamo-electric machines; converting. FRY, A., and FRY, F. A. Aug. 13, 1948, No. 21347. [Classes 35 and 38 (ii)] In a dynamo-electric machine or transformer a portion or portions of the winding consist of two conducting sections adjacent faces of which are separated by rectifying means. In Fig. 2 the rectifying element 12 is disposed between slot conductors 10, 11 of a D.C. generator. In Fig. 5 the invention is applied to the wound rotor 20 of a three-phase induction motor which operates partly as a converter since D.C. from the rotor winding feeds a D.C. motor 25 mounted on the same shaft.
Patent GB-1105565-A (GB)
Title: Polymerisation process
Inventor: TURNER LEONARD
IPC: C08F10/00
Filed: 1965-05-20
Abstract: The invention comprises compounds of the formula <FORM:1105565/C4-C5/1> <FORM:1105565/C4-C5/2> where R and R1 are the same or different and are alkyl, aryl, alkaryl or cycloalkyl groups or hydrogen atoms, n is an integer of at least 5 and preferably at most 18, and m is an integer, which are prepared by polymerizing a cycloolefin of formula <FORM:1105565/C4-C5/3> in the presence of an olefin disproportionation catalyst. Suitable catalysts are rhenium heptoxide supported on alumina; molybdenum oxide/alumina, preferably also containing cobalt oxide and minor amounts of alkali or alkaline earth metal ions; molybdenum or tungsten carbonyls supported on alumina, silica or silica/alumina; and tungsten oxides supported on alumina. Production of dimers is favoured by refluxing the monomer in a Soxhlet-type apparatus, the catalyst being contained in the thimble; and production of higher polymers is favoured by refluxing the monomer in the presence of the catalyst.  Examples describe the formation of hexamers of cyclooctene and cyclododecene; the dimer of cyclooctene, i.e. cyclohexadecadiene; and the hydrogenation of the latter over a PtO2 catalyst to form cyclohexadecane.
Patent GB-225267-A (GB)
Title: Improvements in or relating to electric condensers
IPC: H01G5/12
Filed: 1923-08-23
Abstract: 225,267. Preen, A. Aug. 23, 1923. Condensers. - A condenser is provided with one or more plates formed with circular corrugations. In a variable condenser, both the fixed plates and the movable plates may be corrugated. In one construction, Fig. 3, a main set of movable plates 2 is mounted on a squared part 4 of a spindle 5, into the upper end of which is screwed an operating spindle 8 provided with a knob 21. One or more vernier plates 3 are mounted on a sleeve 14 which surrounds the spindle 8 and is provided with an independent operating knob 20. The sleeve 14 is carried by a screw-threaded sleeve 16 adjustably mounted in the end plate 17 of the condenser, a spring 15 being placed between a collar 7 on the spindle 8 and the clamping nut 13 at the end of the sleeve 14. The lower end of the spindle 5 screws into a socket 34 formed with a collar 9 which may be supported on a forked spring strip 39 which maintains an upward pressure on the main set of movable plates and provides for a certain amount of friction against which this set of plates is operated. The ends of the socket 34 may also be slit at one or more places, in order that it may act as a brake to prevent movement of the main set of plates while operating the vernier plate. An adjusting screw 36 is provided at the bottom of the spindle 5. Both the fixed and movable plates may be separated by integral spacing washers, which may be stamped up from the plate in the form of tubular members 40, Fig. 4, of two different diameters, which serve to effect simultaneous spacing and centralization of the superimposed plates independently of the tie rods or spindle. In a modification, Fig. 6, a single operating knob 56 is provided for independently operating the main and vernier plates. This knob is carried by an axially movable sleeve 50 formed at its ends with clutches 51, 52, one of which can be moved into engagement with a clutch 54 on the end of the spindle 8 carrying the main set of plates, while the other can engage a clutch 55 on the sleeve 14 carrying the vernier plate.
Patent GB-937946-A (GB)
Title: Apparatus for the thermostatic control of room heating
IPC: H05B1/02
Filed: 1962-06-04
Abstract: 937,946. Control systems for space heating apparatus. D. TRUBERT. June 4, 1962 [June 2, 1961], No. 21441/62. Class 38 (4). A central heating system for a building having a plurality of rooms the heating of each room being individually controllable by a thermostat and all the rooms also being controlled from a central control station comprises a heater 47 in each room, the control element 48 of which is controlled by an associated thermostat 1 which comprises three switches, the switch 10, 11 being selected by a switch 53 at the central station when it is desired to heat the room initially to a given temperature say 25 C., a second switch 15, 28 which is adjusted by the room occupant and a third switch 14 which is set to avoid damage to the system due to frost, all the switches having the switching member 15 which is associated with the bimetal element 6 of the thermostat as the operative member. The switch 53 at the central station selectively puts either the first or second switch into operation whilst the third switch is controlled by a switch 57 at the central station which switch 57 also enables an indication of a room temperature to be given on a galvanometer 55 with the aid of a resistor 19. Indicating lamps 34, 60 are provided.