baber/WOPTO huggingface dataset:
Patent GB-609131-A (GB)
Title: Improvements in or relating to the cleaning of fine coal by froth flotation
IPC: B03D1/004
Filed: 1946-03-06
Abstract: In a process for cleaning fine coal containing particles up to 1/4 in. in size by froth flotation using as collector a hydrocarbon compound, e.g. heavy oil or creosote fractions of coal tar, petroleum or other mineral oil and a frother, a wetting agent consisting of a water soluble alkali metal or ammonium salt of an organic compound containing a sulphonic acid or hydrogen sulphate group is added, either with or prior to the addition of the collector.  The sulphonic acid or hydrogen sulphate group may be directly linked to the hydrocarbon radical, or may be through an amide linkage or an aryl linkage.  The hydrocarbon radical may be an aliphatic primary alcohol having a chain of at least 12 p  carbon atoms or a secondary alcohol having a chain of at least 8 carbon atoms.  The wetting agent may be a mixture of the alkali metal or ammonium salts of secondary alkyl hydrogen sulphates having a chain of 10 to 18 carbon atoms in the molecule. Specifications 459,078, 459,080, 459,117 and 478,841, [all in Group IV], are referred to.  Specification 459,079, [Group IV], also is referred to in the Provisional Specification.
Patent GB-685562-A (GB)
Title: Improvements in and relating to vacuum flasks
IPC: A47J41/02
Filed: 1950-03-21
Abstract: 685,562. Vacuum-jacketed vessels. BRITISH VACUUM FLASK CO., Ltd., HASSID, M.A., and VENIS, E. March 8, 1951 [March 21, 1950], No. 7012/50. Class 64 (ii) The inner container 4 of a vacuum flask or jug is introduced through the flanged bottom opening of a moulded casing 1 and a sealing flange, e.g. a rubber ring 5, resting on a shoulder of the inner container, underlies a flange 2 of the top opening. Moreover, an annular diaphragm 9, supported on a resilient ring 8 located between a flange 11 on the diaphragm and the bottom casing flange 3, carries a screw-threaded plug 12. Tightening of this plug in the diaphragm compresses the sealing rings 5, 8 and the latter fills the space between the diaphragm edge and the casing wall. so that the space between the container and the wall could be put under vacuum. The jug casing 1 shown may be of china and the plug 12 and diaphragm 9 of different synthetic resins. The Provisional Specification describes also a flexible closure disc which is snapped into position and has an integral, upstanding flange contacting the bottom of the inner container.
Patent GB-1164433-A (GB)
Title: Key-Operated Switches
Inventor: CRYER EDWARD
IPC: H01H21/50
Filed: 1966-02-17
Abstract: 1,164,433. Mechanical switches. JOSEPH LUCAS (INDUSTRIES) Ltd. 16 Jan., 1967 [17 Feb., 1966], No. 7073/66. Heading H1N. In a rotary key-operated switch wherein contacts 24 are movable from an "off" position to a first, stable, position, and to a second position, a compression spring 36 provides contact pressure and also acts as a torsion spring to return the switch from the second to the first position.
Patent GB-569218-A (GB)
Title: Improvements in machines for making glass pinches, for example in the foot-tubes of electric discharge devices and the like
IPC: H01J9/32
Filed: 1943-05-05
Abstract: 569,218. Shaping glassware. M-O. VALVE CO., Ltd., and MOGGRIDGE, G. May 5, 1943, No. 7115. Drawings to Specification. [Class 56]. In making a pinch in the glass foot tubes of electric discharge devices and the like, after the glass has been initially softened by a preliminary heating, but before the glass is finally heated to the pinching temperature, a force is applied along the axis of the tube whereby the bottom of the tube is properly flattened and caused to lie evenly around the whole of its perimeter on the die block.
Patent GB-152571-A (GB)
Title: Improvements relating to containers for disc records
IPC: A47B81/06
Filed: 1920-03-09
Abstract: 152,571. Howard, E. M. March 9, 1920. Contents, delivering; partitioned boxes.-A partitioned cabinet for containing disk records is fitted with ejecting-means comprising numbered levers 8 pivoted at 15 and provided with projections 10 to engage the records. Each record rests on a straight lever 8, which may be grooved, and against a. stop 17 placed close to the projection 10, so that records of different sizes are similarly acted upon. The levers are cut from a blank 1, Fig. 6, having a strip 3 inserted in a groove at one end bevelled at the other end'. A numbered strip 5 is fixed on the bevel and a celluloid strip 12 may be cemented on the front end of the blank. The partitions 19, Fig. 10, of pasteboard &c. are stiffened at the front and rear edges by wire enclosed in binding-strips 21, and may be covered by a layer of non-abrasive material. The hinged door 36 of the cabinet turns about its lower edge.
Patent GB-897424-A (GB)
Title: Improvements in or relating to central heating and hot water supply systems
IPC: F24H6/00
Filed: 1957-03-05
Abstract: 897,424. Hot-water boilers. GOSSALTER, R. June 5, 1958 [March 5, 1957], No. 7217/57. Class 64(1) In a boiler in which two liquids, e.g. water for central heating and water for draw-off supply, are heated separately, each liquid preheats the other before the latter contacts a surface heated by the burning gases or flue gases of the boiler. Water returning from a central heating system passes to the boiler inlet 19 through an injector 3 in which it entrains some of the water passing from the boiler to the system. It passes through a jacket 18 surrounding draw-off supply chambers 22, 14 and is thus preheated before passing through a pipe 8 to a tapered annular chamber 9 (bearing fins 10 to rotate the combustion gases). The water passes from the directlyheated chamber 9 to the injector 3 and the central heating system. The draw-off supply water passes from an inlet 13 into an annular chamber 22 and through an opening 23 to the chamber 14 where it is heated by the directlyheated wall of the chamber. A thermostat is inserted into the chamber 14 through an aperture 15 and it switches on the oil burner 1 when the water cools. Tnere is also described and depicted diagrammatically in Fig. 1 (not shown), a twin arrangement of two chambers for the separate liquids, each containing an arrangement for preheating the liquid of the other tank and each located at one side of an oil-fired combustion chamber.
Patent GB-388577-A (GB)
Title: Improvements in or relating to carburetters for internal-combustion engines
IPC: F02M7/11
Filed: 1932-03-10
Abstract: 388,577. Spray carburetters. SCHMID, K., 3, Bayernallee, Charlottenburg, Berlin. March 10, 1932, No. 7225. Convention date, Aug. 25, 1931. [Class 7(iii).] In carburetters of the type in which the float chamber is connected with the outer air'and with the intake tube in the vicinity of the throttle aperture, the connection with the outer air is controlled through a lost-motion device from the throttle so that the connection is reduced or closed during closing movements of the throttle. A second and permanent connection between the float chamber and the atmosphere may be provided. The float chamber d is connected with the atmosphere at p, q, and with the intake tube in the vicinity of the throttle aperture by a connection o. Mounted on the throttle spindle g is a spring collar t carrying an arm s operating a valve r, whereby during closing movements of the throttle, the aperture p is reduced or closed, and consequently the float-chamber pressure diminished and the fuel flow to the jet b restricted. In a modification, the connection o is cast integrally with the wall of the intake tube, and opens into the latter by a series of orifices, its total effective cross section being adjustable by means of a needle valve.
Patent GB-1377461-A (GB)
Title: Installation for developing photographic material
IPC: G03G15/11
Filed: 1973-02-14
Abstract: 1377461 Metering fluent materials W MERZ 14 Feb 1973 [16 Feb 1972] 7274/73 Heading B8N [Also in Divisions G2 and G1] An installation for developing photographic material comprises: developing apparatus for receiving photographic material to be developed; automatic metering means, comprising at least one metering head, means for supplying to the or each metering head the processing liquid to be metered, and a plurality of sensors for sensing respective predetermined levels of liquid in the or each metering head, for metering predetermined amounts of processing liquid to be supplied thereby to the developing apparatus for the performance of a developing process; and selecting means for selecting the predetermined amounts of processing liquid to be metered by the metering means, the selecting means cooperating with the sensors to energize a sensor corresponding to a selected predetermined amount of liquid. As shown (Fig. 1), the installation comprises a series of tanks 11 for storing processing liquids connected by pipes 17 and 18 to two metering heads 19 which supply processing liquid via pipes 21 and hoppers 25 to two associated developing chambers 23 containing rotatable and rockable tanks 24 in which sheets are processed. In operation processing liquid is pumped from a tank 11 into a metering head 19 until a selected liquid level corresponding to the required predetermined amount, is reached in a chamber 20 in the head, as electrically sensed by one of a plurality of electrodes 46 (Fig. 3, not shown) which automatically cut off the liquid supply; a solenoid operated valve 21a is then opened so that the contents are discharged into tank 24. After processing rinsing water from a pipe 29 is supplied directly to hopper 25, and also to a chamber 38 at the top of head 19 (for washing the head and supply pipes). Used processing liquid and rinsing water from tank 24 passes into chamber 23 and out through pipe 28; to prevent flooding chamber 23 contains an electrical sensor (Figs. 2 and 6, not shown), which activates and deactivates a drainage pump or valve at predetermined liquid levels, and operates a warning if an excessive level is reached. The installation may be housed in several cabinets (Figs. 7a, 7b, 8, not shown), the cabinet housing tank 11 (Fig. 9, not shown) may contain a fan 93, a heater 95, a cooler 96 and a pan 100 for condensed water. The operation of the installation may be controlled by a timer 90a and a programmer 88 which co-operates with metering keys 90.
Patent GB-345077-A (GB)
Title: Improvements in ticket printing machines
IPC: B41K3/60
Filed: 1930-03-06
Abstract: 345,077. Printing-machines. SIEGFRIED, W., 32, Epinaystrasse, Erfurt, Germany. March 6, 1930, No. 7384. [Class 100 (ii).] Rotary machines; printing-surfaces.-A machine for printing strips of tickets is constructed with a printing drum 2 formed of a cylindrical member to which is detachably secured a segmental typereceiving member 3 formed as shown with curved grooves for receiving the types. The member 3 may be replaced by a similar member formed with longitudinal grooves for receiving the types, so that tickets can be printed side by side, or end to end on a strip 5. The strip 5 is fed forward intermittently as the drum 2 rotates by means of a segmental bar 6 which is secured in a groove 4 of the segment 3 in the same manner as the types or type-bars are secured in the grooves. To ensure a space at the leading edge of each ticket a linelimiting bar 9 is secured to the bar 6 at right-angles to it, and is of less height than the types so as to prevent it from being inked. The bar 6 engages one edge only of the strip, and it coacts with a rubber-covered impression roller 7 to effect the feed. The other edge of the strip may be guided by means of pins or clips 5a, Fig. 1, which serve for attaching the printed tickets to goods. The types and the bars 6, 9 are locked on the grooves 4 by means of a slide 10, Fig. 4. Inking-apparatus.-The type is inked by rollers 11 which are adjustable longitudinally on a shaft 12 on which they rotate freely. The rollers 11 are secured in the desired position by means of catches 14 engaging the required annular grooves 13 in the shaft 12, as shown in Fig. 1. The rollers 11 are set so as to act only on the type, and the bar 6 is prevented from being inked.
Patent GB-556499-A (GB)
Title: Improvements in the control of electric heating elements, particularly in ovens
IPC: H05B1/02
Filed: 1942-06-01
Abstract: 556,499. Automatic control systems for electric heating apparatus; thermal switches. WILCOLATOR CO. June 1, 1942, No. 7402. Convention date, June 20, 1941. [Class 38 (iv)] [Also in Group XXXVII] Temperature.-Heating apparatus, e.g. ovens, having two heating units 38, 39, an adjustable thermostat 42 and a selecting switch 44, is arranged so that in one position of switch 44 both units may be operative for rapid heating. The circuit of unit 38 then passes through two contacts, such as 32, 33, subject to the combined action of two thermal members, one, such as 23, dependent on operation of the heating apparatus, the other, such as 34, dependent on operation of one of the units. Figs. 1 and 4 refer to a construction in which a bimetal member 23 is exposed to oven temperature and a bimetal member 34 is heated by current to the unit 38 to be eliminated as soon as the thermostat operates..According to Fig. 7 the member 23a is in an enclosure heated by a coil 64 in series with the other unit 39 ; this form may be housed with the switch 44 and the thermostat 42. Figs. 11, 13 show contacts 85, 86 in series with unit 38 (not shown) and carried respectively by a bimetal member 81 and the base of a tube 76 apertured at each side and having a reduced extremity 82 to which the member 81 is secured. The lower limb of the tube is exposed to radiant heat from unit 39 but protects the upper limb so that, when unit 39 is on, contacts 85, 86 are pressed together. The oven heat bends member 81 to press an insulating extension 89 against the side of contact 86 so that when unit 39 cools, on operation of the thermostat, the insulator snaps over the contact and prevents further action of unit 38. Specifications 521,556, [Group XXXVII], and 547,625, [Group XXXVIII], are referred to.
Patent GB-1133003-A (GB)
Title: Components held together by retaining means
Inventor: HUDDLE FRANCIS GODFREY
IPC: F16L9/00
Filed: 1966-02-19
Abstract: 1,133,003. Clips. DISTILLERS CO., Ltd. 20 Jan., 1967 [19 Feb., 1966], No. 7403/66. Heading E2B. An assembly comprises a number of components 1, 3 relatively positioned so as to form a unit, e.g. a ball or disc valve or disc filter, and a deformable sleeve 14 which, when not deformed, Fig. 3, has an internal dimension 15 which is less than the maximum crosssectional width of the unit, the sleeve being deformable, without increase of internal perimetral dimension, so that it fits over the unit, and having sufficient elasticity when so fitted as to tend to regain its undeformed shape, thus gripping and retaining the assembled components. The sleeve may be of polyethylene, plasticised P.V.C., polypropylene, nylon, rubber, spring steel, phosphor bronze or titanium and may be formed with projections or corrugations on its internal surface. Two superposed ball valves may be held by the sleeve, Fig. 1 (not shown).
Patent GB-313510-A (GB)
Title: Improvements in and relating to concrete structures
IPC: E21D11/10
Filed: 1928-03-09
Abstract: 313,510. Brown, W. L. Lowe-. March 9, 1928. Tunnels.-Concrete tunnel linings 4 are cast in situ by packing rock excavated in situ in the space between removable shutters and the surface of the excavation, with or without reinforcement, and consolidating by injecting liquid cement under pressure. Reference has been directed by the Comptroller to Specification 245,488.
Patent GB-328081-A (GB)
Title: Improvements in tennis balls
IPC: A63B41/00
Filed: 1929-03-07
Abstract: 328,081. Williams, L. E.. and James, G. E. March 7, 1929. Balls. - Relates to tennis balls of the kind described in Specifications 328,080 and 328,170 having inflating plugs composed of portions A, B of vulcanized or unvulcanized or less highly vulcanized rubber, and consists in the provision of two plugs arranged diametrically opposite one another within the ball to improve the balance thereof. The positions of the plugs are indicated by projections E such as are described in Specification 328,047.
Patent GB-854227-A (GB)
Title: Egg cartons and method and apparatus for making the same
IPC: B65D85/32
Filed: 1958-03-07
Abstract: 854,227. Cutting-machines. SCHWERTFEGER, W. J. March 7, 1958, No. 7443/58. Class 31 (1). [Also in Group XVII] A machine for cutting egg filler flats 30 comprises a driven conveyer belt 3, circular cutters 20 mounted on a motor-driven shaft 18, corrugated strips 26 for positioning the eggs out of the paths of the cutters, guides 29, 28 for the cut portions and for selvedge portions respectively, and a suction tube 33 for extracting lint.
Patent GB-1170333-A (GB)
Title: A Derivative of Benzofuranol
IPC: C07C45/67
Filed: 1967-02-16
Abstract: 1,170,333. 2,3-Dihydro-2,2-dimethyl-7-benzofuranol. FMC CORP. 16 Feb., 1967 [23 Feb., 1966], No. 7459/67. Heading C2C. 2,3 - Dihydro - 2,2 - dimethyl - 7 - benzofuranol is prepared by (a) heating 2-hydroxyacetophenone with a methallyl halide in the presence of an acid acceptor to form 2-acetylphenyl methallyl ether; (b) isomerizing and cyclizing the latter compound by heating to form 2,3 - dihydro - 2,2 - dimethyl - 7 - acetylbenzofuran, via intermediate 2 - hydroxy - 3 - methallylacetophenone; (c) oxidizing the resultant benzofuran with a peroxide or a peracid to obtain 2,3-dihydro-2,2-dimethyl-7-acetoxybenzofuran; and (d) hydrolysing the latter to 2,3 - dihydro - 2,2 - dimethyl - 7 - benzofuranol. Step (a) may be effected using methallyl chloride in an aqueous alkali metal derivative solution at reflux temperatures. Step (b) may be effected in one stage by heating at 150-250‹ C. in the presence of an acid catalyst, e.g. FeCl 3  or MgCl 2 , or in 2 stages by omitting the catalyst and isolating the intermediate. Preferred oxidizing agents for step (c) are H 2 O 2 , peracetic acid and perbenzoic acid. Hydrolysis step (d) is suitably effected by heating in the presence of a strong base.
Patent GB-622397-A (GB)
Title: Improvements in means for operating angularly-movable panels
IPC: B60J1/14
Filed: 1947-03-19
Abstract: 622,397. Pivoted window regulators. WORCESTER WINDSHIELDS & CASEMENTS, Ltd., JONES, A. E. E., and PERCIVAL, R. March 19, 1947, No. 7525. [Class 20(iii)] An angularly movable panel such as a vehicle quarter-light is operated by a lever connected thereto and pivoted at a fixed point, the lever being connected by pin and slot with an operating arm or handle whose pivotal axis is offset from that of the lever. As shown, the lever 3, connected by pin 7 and slot 8 to the panel 1, is pivoted at 4 to a bridge-piece 5 screwed to the garnish rail 6; a slot 14 in the lever is engaged by a pin 12 projecting from the handle 10 through a slot 13 in the bridgepiece concentric with the pivot 11 of the handle 10 ; the inclined part 14a of the slot 14 renders the panel self-locking in the closed position.
Patent GB-1446502-A (GB)
Title: Wet-type friction clutch
IPC: F16D13/72
Filed: 1974-02-19
Abstract: 1446502 Friction clutches; clutch release bearings AISIN SEIKI KK 19 Feb 1974 [24 Feb 1973] 7583/74 Headings F2C and F2L Cooling oil for a friction clutch is supplied through axial passages 40 in a retainer for a clutch release bearing 35. The axial passages 40 (four as described) are defined between an inner sleeve 39 and an outer body 37 of the retainer and supplied from an annular groove 41 in turn supplied from an oil tank, not shown, through a pipe 38 by a pump not shown. The sleeve 39 has a deflecting lip at the outlets of passages 40 to direct the oil. The clutch comprises driven plates 18, 20, a presser plate 14, intermediate plate 15 and a diaphragm spring 33 engaging the clutch. Straps 31 connect pressure plate 14 to a clutch cover 12 secured by bolts 13 to a flywheel 11. The oil passages 40 may alternatively be provided between the bearing retainer and a hub of the clutch release bearing.
Patent GB-1133808-A (GB)
Title: Analog to digital converter
Inventor: PRILL ROBERT S
IPC: H03M1/00
Filed: 1967-02-17
Abstract: 1,133,808. Analogue-digital converters. GENERAL PRECISION SYSTEMS Inc. 17 Feb., 1967 [15 April, 1966], No. 7587/67. Heading G4H. In an analogue-digital converter, sinusoidal signals from a synchro or resolver are demodulated to give D.C. signals representing the angular position of the resolver shaft which are then fed via switching means to an oscillation circuit, the switching means being such that, when closed, the D.C. signals are impressed on the oscillation circuit and when opened an oscillation cycle is started at the impressed voltage value. A zero crossing and a phase detector connected to the oscillation means detects a zero crossing in one of the oscillation cycles to enable a counter to accumulate pulses, the number of pulses accumulated representing the angle of rotation of the shaft. In the embodiment described the fine resolver 1 (Fig. 2) of a two-speed resolver system 1, 2 is first encoded by demodulating the sine and cosine outputs of the resolver and demodulators 9, 10. These are fed through transistor switches 11, 12 opened under the control of a programme counter 35 to allow the D.C. signals to be gated to the oscillator. When switches 18, 22 are closed the outputs of D.C. amplifiers 23, 24 become the negative of their input voltages and when the switches are reopened the oscillator begins to oscillate. The oscillator is allowed to cycle to 180 degrees before the fine encoding cycle begins by the programme counter 35 applying a pulse to gates 33, 39. At the start of the encoding cycle the polarity of the signal in the amplifier 24 is stored in flip-flops 30, 31 and when the signal passes through zero with a negative slope a pulse is supplied to a flip-flop 32 to enable clock pulses to pass through gates 33 to be accumulated in the 6th-19th most significant digit positions in a counter 34. At the end of one cycle of the oscillator, the programme counter 35 terminates the count and closes switches 13, 14 associated with the coarse encoder so that in a similar manner pulses are accumulated in the first five most significant digit positions, the total count representing the angle of rotation of the shaft.