baber/WOPTO huggingface dataset:
Patent GB-499072-A (GB)
Title: Improvements in or relating to automatic fire-arms
IPC: F41A3/32
Filed: 1938-02-08
Abstract: 499,072. Automatic firearms. CESKA ZBROJOVKA AKCIOVA SPOLECNOST V. PRAZE. Feb. 8, 1938, No. 3934. Convention date, Feb. 8, 1937. [Class 119] An automatic firearm in which the breech-block 55 is mounted in a breech-block carrier 5 actuated by a gas piston, has the locking of the breechblock effected by a fixed post 60 engaging a projecting lug 57 on the breech-block, the forward end of the breech-block having projections 56 guided in the carrier so that the breech-block may be tilted upwardly about the projections 56 to unlock the breech. The tilting of the brech-block is effected by a cam face 44 on the carrier which engages a corresponding face 59 on the breech-block, the movement of the breech-block into locked position being effected by the engagement of a cam face 45 on the carrier with the rear end of the breech-block during the return of the carrier. The carrier has lugs 13, Fig. 2, guided longitudinally in the casing 4 and has recesses 14 in the horizontal plane of the barrel axis, to receive recoil springs. A handoperating control 53 is fitted on the carrier. The rear end 42 of the carrier extends downwards below the level of the underside of the breech-block, to constitute a cam for cocking the hammer 48, on rearward movement of the carrier, no release of the hammer then being possible until the breech is locked. A cover-plate 54 is fitted to prevent fouling.
Patent GB-807423-A (GB)
Title: Improvements relating to helicopters
Inventor: ROGERS VICTOR ALFRED BADEN
IPC: B64C27/41
Filed: 1956-02-08
Abstract: 807,423. Helicopters. FAIREY AVIATION CO. Ltd. Feb. 7, 1957 [Feb. 8, 1956], No. 3972/56. Class 4. [Also in Group XXXII] A helicopter rotor head comprises a tiltable hub 11 on which the inner ends of the blades 10 are mounted, an upwardly extending tiltable control shaft 21, connections between the control shaft and the blades for varying the blade pitch in accordance with movement of the control shaft, and a bridle coupling 23 between the control shaft and the hub, which coupling is resilient, whereby the transmission of vibrations between the hub and the control shaft is reduced. In Fig. 1, the hub 11 is universally mounted through a gimbal ring 12 to a ring 13 rotatably mounted on a pylon 14 fixed to the helicopter fuselage. The control shaft 21 is universely mounted at the centre of tilting 22 of the hub 11. A member 25 is fixed to the shaft, and each of two links the length of which are adjustable by turnbuckles (not shown) is universally mounted at its two ends to the member 25 and to a blade pitch change horn 17 respectively, so that tilting of the control shaft controls the blade pitch cyclically, and vertical movement of the shaft effects collective pitch control. An inverted U-shaped member 23 is slidably and non-rotatably mounted on shaft 21 e.g. by splines, and the arms 29 of the U are connected to pivots 30 on the hub, so that the hub is tilted as cyclic pitch is applied. Transmission of vibration from the hub to the shaft is reduced by making arms 29 leaf springs, which may be laminated, or by including a piston and cylinder type shock absorbing unit in each arm, relative movement of the piston and cylinder being restrained by springs or rubber blocks (see Group XXXII). In the embodiment of Figs. 2 and 3 (not shown), flyweights are mounted on the ends of arms extending radially from the hub in a vertical plane at right angles to that containing the blades. The vertical shaft 21 is hollow, and contains a hollow tube rotating with the blades and supplied with fuel through a rotary pipe joint which fuel is supplied to blade tip jet engines through a distributer at the top of the tube. The tube also carries electrical cables connected to slip rings at the bottom of the tube for the engines ignition supply. The interior of the hollow hub is sealed from the atmosphere and acts as a distributer for compressed air fed to the engines through the hollow blades. The hollow tube also drives a revolution counter and rotational speed indicator, and a rotor brake is provided for stopping the rotor when power is cut off.
Patent GB-1386403-A (GB)
Title: Cutter chains
IPC: B27B33/14
Filed: 1971-02-05
Abstract: 1386403 Chains AUSTIN HOY & CO Ltd 7 Feb 1972 [5 Feb 1971] 3990/71 Heading F2Q A chain adapted to run in a guide track 23 comprises a plurality of pairs of inner links 3a alternating with pairs of outer links 3b and being pivotally interconnected by cross-pins 5, bearing members 2 being formed on the links 3b and being adapted to engage in the guide track 23. In a modification all the links are identical and the cross-pins 5 are extended to form bearing surfaces which are received in the guide track 23. Cutter picks 13 are releasably mounted in pick boxes 10 welded to the upper surfaces of the links.
Patent GB-606871-A (GB)
Title: Improvements in or relating to hammers, presses and like machine tools
IPC: F16C29/02
Filed: 1946-02-08
Abstract: 606,871. Mechanical presses. SIEFF, S. H. Feb. 8, 1946, No. 3993. [Class 87(ii)] The press tool or hammer 4 is guided by members 5 which are of circular section and are slidable in grooves 6, also of circular section, machined in housings 7 detachably secured to the machine frame. The members 5 may be detachable, as shown, or integral with the tool 4. The tool is reciprocated by a crankshaft 9 through a connecting rod 8 which is adjustable in length.
Patent GB-289978-A (GB)
Title: Improvements in or relating to the manufacture of fermenting products
IPC: A21D8/04
Filed: 1927-02-12
Abstract: 289,978. British Arkady Co., Ltd., Whymper, R., and Hewitt, H. Feb. 12, 1927. Bread.-In a break-making process a ferment for subsequent incorporation into the dough. flour or other dough ingredient is separately prepared and comprises a mixture of yeast and an enzymeproducing fungus such as Aspergillus Cryzeae or Penicillium. Yeast cultivated on a dough made from wheat, maize, rice or like flour may he. incorporated with Aspergillus Cryzeae, or Aspergillus cultivated on rice, barley &c. may be added to yeast, or the product resulting from the growth of both fungi may be mixed, or both types of fungi may be grown on a starchy dough with or without the addition of wheat germ or soya bean meal and mineral salts. The ferment obtained is dried and ground. or it may be forced through vermicelli dies, dried and ground and mixed with the powdered product of Aspergillus cultivated on rice or rice and wheat germ. Two examples of the preparation of the ferment are given.
Patent GB-372404-A (GB)
Title: Improvements in electrical measuring or relay apparatus, particularly for high potential circuits
IPC: G01R15/14
Filed: 1931-02-09
Abstract: 372,404. Electromagnetic relays. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, WELLINGS, J. G., Ricky, London Road, Dunchurch, and MAYO, C. G., 17, Alexandra Road, both in Rugby. Feb. 9, 1931, No. 4047. [Class 38 (v).] For measuring the current in a high-potential alternating-current circuit, a current-measuring instrument or relay is directly or indirectly connected to the adjacent ends of two inductively related windings adapted to receive a circulating current equal or proportional to the current flowing in the circuit and connected so that the total voltage of the circuit is dropped across the windings whereby the instrument is operated substantially at earth potential, and may be connected to earth. To the terminals of a shunt resistance 4 in the main 1 are connected adjacent ends of the two primary windings 2, 3 of a potential transformer, the other ends of these windings being connected to an ammeter 5, one terminal of which may be earthed. The secondary winding 6 of the transformer may be connected to a voltmeter 7. The shunt resistance 4 may be replaced by a current transformer or autotransformer. The ammeter 5 may be connected to the windings 2, 3 through a current transformer. The primary windings 2, 3 of the potential transformer may consist of twin double-cottoncovered wire or strip. The transformer may be of the type described in Specification 340,227, [Group XXXV]. The instrument 5 may be replaced by a relay.
Patent GB-1073886-A (GB)
Title: Apparatus for introducing a liquid additive to a liquid product flowing in a pipeline
IPC: B01F15/04
Filed: 1965-01-29
Abstract: 1,073,886. Mixing liquids in flow. COMPAGNIE GENERALE D'AUTOMATISME and COMPAGNIE D'APPLICATIONS ET RECHERCHES ATOMIQUES. Jan. 29, 1965 [Jan. 31, 1964; Dec. 23, 1964], No. 4156/65. Heading B1C. [Also in Divisions G1 and G4] A valve 13 is adjusted automatically to control the amount of a liquid additive mixed with a liquid flowing in a pipe 11. One of tubes 1, 2 is filled with the additive from tank 30 while the other tube is being emptied through valves 8, 13. Tube 2 has a radioactive float 12 and a double ionization chamber detector 17 which is suspended on a chain 14. As a tube is emptied, the detector 17 controls a servo system 15 so that the detector 17 is moved to remain level with the float 12. A photo-electrically sensed perforated disc 31 is coupled to the servo system 15 and produces pulses which are proportional in number to the amount of additive dispensed. A device 23 produces pulses which are proportional in number to the amount of liquid flowing in pipe 11, and this number is converted at 22 in proportion to the desired ratio of additive to main liquid, a comparator 21 controlling valve 13 in accordance with any difference between the numbers of pulses supplied thereto. ,
Patent GB-715844-A (GB)
Title: Improvements to record supporting and feeding means for record changing mechanism
IPC: G11B17/02
Filed: 1952-02-18
Abstract: 715,844. Automatic gramophones. GARRARD ENGINEERING MANUFACTURING CO., Ltd., and FORTUNE, H. J. May 18, 1953 [Feb. 18, 1952], No. 4203/52. Class 40 2). In a record changer, a record edge support having a feeding tooth associated therewith is mounted for displacement upon a lever system comprising a parallelogram, in order to accommodate various sizes of records. The support member 1 is carried by levers 8 and 5 pivoted at 9 and 6, respectively, on one support bracket 3, and a lever 4 pivoted at 6 on another support bracket 2. The resulting parallelogram of levers may be set to give various positions of the support 1 by the movement of a hand lever 20 which is pivoted at 9 and engages a pin 22 on lever 4. The lever 20 has three notches 23, 24, 25 which correspond to positions for three different sizes of record. A spring 32 connects levers 4 and 20, and maintains the engagement of pin 22 in the appropriate notch. Records are fed from the support 1 by means of a sliding member 13 which is operated by a lever 15 pivoted on a shaft 16 mounted between levers 7 and 8, and coupled to member 13 by a link 14. The lever 20 is connected by means not shown to means for setting the tone arm according to the size of the record.
Patent GB-398475-A (GB)
Title: Improvements relating to indiarubber tiles and the like for floors and other purposes
IPC: B29C33/30
Filed: 1932-02-12
Abstract: 398,475. Moulds for flooring-tiles. WHITTAKER, H. V., 2, Napier Road, Monton, Eccles, near Manchester, and LATHAM, E. G., 6, Canterbury Road, Davyhulme, Manchester. Feb. 12, 1932, No. 4204. [Class 87 (ii).] Moulds for the production of indiarubber tiles or the like for floors and other purposes, are provided with inserts to form integral undercut projections on the back of the tile. As illustrated, the plates c within the mould provide an aperture c<1> or apertures for the formation of the projection or projections, the plates fitting into a recess in the base d of the mould and their edges e being bevelled to impart the undercut edges to the projections. The plates are removable from the mould with the tile, and are removed from the latter subsequently. As shown, two similar plates e may be used which form a cruciform aperture c<1>. The outer edges of the plates are bevelled at f to facilitate removal from the mould. The mould has holes g which produce peg-like projections on the underface of the tile. The tile may have an intermediate rigid layer of asbestos cement or the like sandwiched between two layers of rubber.
Patent GB-268508-A (GB)
Title: Improvements in or connected with driving mechanism for haulage drums
IPC: B66D1/30
Filed: 1926-02-15
Abstract: 268,508. Mavor & Coulson, Ltd., and Munro, A.. M. Feb 15, 1926. Coal-cutting machines.-The haulage drum C is coupled to a shaft A rotatable in one direction only by a pivoted member E which is mounted in a collar D and face-plate 5 secured to the shaft. The interior of the drum is formed with recesses 10 which are engaged by the nose of the member E. A head E<1>, provided for turning the member E, is provided with a detent 9 which can be engaged with the circular races 7, 8 to lock the member E in the engaged and disengaged positions, respectively. The member E may be carried by the drum instead of by the shaft, or may be carried independently of both.
Patent GB-1207042-A (GB)
Title: Rotor speed sensing circuit
Inventor: PERDUE BENNIE GERALD
IPC: G01P3/48
Filed: 1968-01-26
Abstract: 1,207,042. Frequency - detectors; transistor bi-stabie circuits. GENERAL ELECTRIC CO. 26 Jan., 1968 [28 Feb., 1967], No. 4336/68. Headings H3A and H3T. [Also in Divisions G1 and H2] A speed control for a motor 10 (see Division G1N) comprises a frequency sensitive switch in which one rotor winding is connected through a rectifier 38 to a capacitor 54, the emitter of a unijunction transistor 48 and across its two bases. Thus, just before the end of each halfwave pulse of rectified rotor voltage, the accumulated charge on capacitor 54 in associated with the interbase potential cause transistor 48 to fire. Transistor 56 is thus saturated whereby capacitor 60 discharges through diode 62, allowing capacitor 68 to discharge through diodes 76, 78 and transistor 84. When transistor 56 is again blocked, capacitors 60, 68 are recharged at a constant current rate via transistor 66. If the frequency is low, as it normally is, the voltage across Zener diode 78 does not fall below its breakdown value and transistor 84 continues to conduct. If however the frequency uses due to increased slip, the voltage across capacitor 68 is insufficient to produce breakdown of diode 78, transistor 84 is blocked, followed by blocking of transistor 90. When transistor 90 is conducting it powers the unijunction oscillator 94, whose output is fed to an SCR 104, whereby it fires and energizes a relay 32, whose contacts 30 introduce resistors 28a-28c into the rotor winding circuit. The slip speed at which relay 32 is energized is predetermined by adjustment of variable resistor 64 in the charging circuit of capacitors 60, 68.
Patent GB-601230-A (GB)
Title: Improvements relating to electronic valves
IPC: C03C27/04
Filed: 1945-02-21
Abstract: 601,230. Electroplating glass. CALLENDERSUCHY DEVELOPMENTS, Ltd., and SUCHY, K. T. Feb. 21, 1945, No. 4371. [Class 41] [Also in Group XL (a)] A method of applying a metal screen to an electronic valve and sealing the joint between the valve bulb and the valve pin socket to which it is connected, comprises sealing the joint with a ring of porous cement, treating the valve bulb and a portion of the valve pin socket adjacent the joint to provide matt surfaces and applying by electrodeposition a continuous skin of metal to the valve bulb, the sealing ring and the treated part of the valve pin socket. The glass bulb of the valve is first treated with " frosting powder " to give the glass a matt surface and is then de-greased by washing in a caustic soda solution and then in water. The bulb is then rendered conductive bv treatment with a stannous chloride solution, a colloidal silver solution and a reducing agent, after which the bulb is dried and brushed to remove the conductive silver particles from the top surface so that the subsequent electrodeposition of. for example, silver, is encouraged to commence beneath the surface and build up to it as explained in Specifications 572,071 and 575,148. The electrodeposition is carried out at low current density, for example ¢ ampere per square decimeter at a voltage of from 1¢ to 2.
Patent GB-952583-A (GB)
Title: Improvements in collapsible sweating-cabinets
IPC: A61H33/06
Filed: 1963-02-04
Abstract: 952,583. Vapour baths. M. ACHNER. Feb. 4, 1963 [Feb. 7, 1962], No. 4424/63. Heading A4N. In a heat insulating screen which can be rolled up or formed into a cylindrical freestanding turkish bath or like vapour cabinet and consisting of straight rigid tubular members 5 joined to a flexible base 3, the members 5 are of extruded plastic and have longitudinal webs 12, 13 subdividing their interiors. The inside of the screen is lined with heat reflecting metal foil 4 having an embossed pattern. A capping strip having a reinforcing wire embedded in it may be provided to close either or both open ends of the members 5. The sheet 3 may be of fabric or plastic. An alternative arrangement of webs is described. Specification 689,294 is referred to.
Patent GB-631197-A (GB)
Title: Improvements in or relating to domestic electric cookers
IPC: F24C15/18
Filed: 1948-02-17
Abstract: 631,197. Electric cooking - stoves. BICKELL, S. F. Feb. 17, 1948, No. 4507. [Classes 39(iii) and 126] External air passes through an aperture 7 in the casing 1 of an electric cooker into an air space between the outer wall of an oven 2 and the casing and passes into a hot cupboard 4 above the oven through apertures 9 in a wall of the cupboard. The rear lower edge of the hot cupboard door 12 is bevelled and the oven door 10 is so shaped that air passes directly at 11 from the top of the oven into the cupboard, whether the oven door is open or closed. The apertures 9 may be cowled horizontal slots and the apertures 7 in the base plate' 8 may be adjustable. The air space extends to both sides and back of the oven and beneath the cupboard. A ledge 6 in the top 5 of the frame 1 receives a hob forming a roof for the cupboard 4. The edges of the hob are turned down or have feet so that air escapes from the cupboard beneath the edges of the hob. The oven lagging is inches thick so that a temperature of 400' F. is reached in ten minutes with 25 kilowatts.
Patent GB-348535-A (GB)
Title: Improvements relating to spraying nozzles for washing motor vehicles
IPC: B05B1/16
Filed: 1930-02-11
Abstract: 348,535. Spray nozzles. CAMPBELL, F., 28, Marshall Road, Levenshulme, and YOUATT, C. S., 5, Longton Avenue, Withington, both in Manchester. Feb. 11, 1930, No. 4564. [Class 69 (iii).] A nozzle is provided with a cock d having a central passage e to pass an unbroken jet and oppositely disposed circumferential grooves j to produce a finely atomized spray. The cock connects with a nozzle c comprising opposed conical passages c<1>, c<2> connected by a cylindrical part c<3>. In a modification this passage is formed in the cock itself...
Patent GB-580256-A (GB)
Title: Process for the preparation of ª‡-nitro-isobutene
Filed: 1944-03-13
Abstract: a -Nitroisobutene is prepared by treating 1 : 2-dinitroisobutane in the presence of water with one or more of the following basic substances: urea, the oxides, hydroxides, carbonates (including bicarbonates and basic carbonates) of alkali and alkaline earth metals, ammonium, magnesium, lead and zinc.  The reaction may be carried out in the presence of a solvent for dinitroisobutane. 1-Nitro-2-methylpropene-2 is also produced by the reaction and may be separated from the product by distillation.  1 : 2-Dinitroisobutane is prepared as described in Specification 580,260.
Patent GB-421701-A (GB)
Title: Improvements in or relating to thermostatic control arrangements for the cooling systems of internal combustion engines
IPC: F01P7/16
Filed: 1934-02-12
Abstract: 421,701. Cooling cylinders. PAYNE, M., 50, Hook Road, Surbiton, Surrey, and BRITISH THERMOSTAT CO., Ltd., Windmill Road, Sunbury, Middlesex. Feb. 12, 1934, No. 4650. [Class 7 (ii)] [See also Group XIII] In engine-cooling systems having a byepass conduit 8 for the flow of cooling-medium directly from the flow pipe 2 to the return pipe 4 when a thermostatic valve 6 controlling the flow to the radiator 3 is closed, one end of the byepass conduit terminates in a nozzle 9 in the return or the flow pipe and directed towards the radiator, whereby the stream of liquid flowing past the nozzle when the valve is open and the radiator is in action tends to induce a flow through the byepass in an upward direction and prevent a circulation of hot liquid down the byepass. A modification is described in which the nozzle leads into the bellows chamber of the valve, located on a wall of the upper header of the radiator, so that the flow of hot liquid into the radiator tends to induce the upward flow through the byepass.
Patent GB-466264-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B71/00
Filed: 1935-10-23
Abstract: 466,264. Sewing-machines. WILLCOX & GIBBS SEWING MACHINE CO. Oct. 23, 1935, No. 4664/37. Convention date, March 16, 1935. Divided out of 464,773. [Class 112] The work plate has top and bottom faces with ducts cut within the metal walls connecting these so that oil may be supplied by a pump to the bearings through these passages. The main frame 50 forms a reservoir 56 for lubricant 57. The work plate 60 has a series of oil ducts of large cross-section for directing oil to the main operating mechanisms. The main duct 67, Figs. 2 and 4, feeds oil to ducts 67<1>, 68, 375, 376 and 377. The ducts are proportioned to ensure an even flow of oil in each. A glassplate 378 enables the operator to see whether or not the lubricating system is working. A web 349 directs oil from the duct 376 on to the feed rocker eccentric and associated bearings. A similar web 350 directs oil from the duct 375 to a channel with outlet holes in the feed dog carrier. The duct 68 supplies oil to the bore 133 to lubricate the needle carrier shaft 123 and eccentric 132. An aperture A is cut from the duct 68 to supply lubricant to one of the bearings of the main shaft 81. The channel 377 directs oil on to the other bearing. Similar channels direct oil to various other bearings. The oil is circulated from the reservoir 56 to the work plate 60 by a pump 358, operated by a pulley driven by the main drive belt. The pump has an inlet tube 360 to suck oil up from the sump 56 into which oil drips from the bearings, and forces it up the bore 357 to the main channel 67. A gauge filter 361 prevents fluff and grit from entering the pump.
Patent GB-1115111-A (GB)
Title: Fuel gas burning apparatus
IPC: F24H3/10
Filed: 1966-02-02
Abstract: 1,115,111. Air heating stoves. CARRIER CORPORATION. 2 Feb., 1966 [30 March, 1965], No. 4676/66. Headings F4S and F4W, A gas burning device comprises a gas burning assembly, a heat exchanger for transferring heat from the combustion gases to a secondary fluid, and a baffle 36 located in the path of the combustion gases, the baffle including porous material, e.g. glass fibre, the quantity and location thereof being such as to prevent the phenomenon of audible resonance. The drawing shows an air heating stove in which a gas burner 15 is located at the bottom end of each of a number of upright passages 23 around which room air to be heated is forced by means of a fan 13 through passages 19. The porous material is arranged at the outlet ends of the passages 23 and includes a glass fibre or mineral wool mat supported on wire mesh 34 and overlaid by the baffle 36. In an alternative embodiment, Fig. 2 (not shown), a heat-exchange element is provided with an upwardly open channel-shaped baffle (42) in which glass fibre or rock wool (43) is disposed.