baber/WOPTO huggingface dataset:
Patent GB-1509242-A (GB)
Title: Gas detecting device
IPC: G01N27/12
Filed: 1975-03-26
Abstract: 1509242 Gas detector devices MINNESOTA MINING & Mfg CO 26 March 1975 [27 March 1974] 12703/75 Addition to 1416729 Headings G1B and G1N A gas detecting device is made insensitive to the velocity of the gas being detected by establishing a placid gas layer through which the gas diffuses to reach a detector layer by means of two gas-flow attenuating means. In the arrangement of Fig. 2, and Fig. 1 (not shown), a mercury vapour detector includes a gold layer 12 in a serpentine pattern over which is disposed a diffusion grating 14 provided with gas flow channels 16. A placid gas layer 15  is established by means of a fine woven mesh screen 18 mounted on lip 9. A gas mixture to be analysed diffuses across the placid layer 15 to the film 12 where any Hg present forms an amalgam which can be detected by monitoring the resistance of the film 12. A mat of compressed non-woven fibres may be placed between grating 14 and layer 12 to further attenuate movement of gas. Fig. 5 (not shown). It may contain a reactive substance to trap or hold contaminants, e.g. carbon to absorb organics. An alternative detector, Fig. 6, has a chamber 27 closed by a mesh screen 18 mounted above a diffusion grating 25 so as to form a placid gas layer therebetween. Below the grating 25 is positioned a bed 26 of substance which reacts with the gas(es) to be detected. Additional screens 36 may be provided. The grating 25 may be replaced by a porous plate formed of consolidated particulate material, Fig. 4 (not shown). Alternative forms of screens are wire screens or mesh, non-woven batting, microporous polymeric films, or porous sintered plate such as glass beads coated with a heat bonding epoxy or metallic particles. Examples of reactive substances are: anhydrous CaSO 4  for monitoring water vapour, activated carbon to monitor organic vapours, Palladium chloride embedded in filter paper which changes colour upon absorbing carbon monoxide, exchange resins and liquid absorbers. The reactive substances are analyzed gravimetrically or by chromotographic analysis.
Patent GB-418903-A (GB)
Title: Improvements in or relating to telephone or like systems
IPC: H04Q1/442
Filed: 1933-05-02
Abstract: 418,903. Automatic exchange systems. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, and McCLEW, J. W., 27, Arlescourt Road, West Derby, both in Liverpool. May 2, 1933, No. 12779. [Class 40 (iv).] In an impulse repeater, incoming impulses of one kind are repeated as im. pulses of a different kind the character of which varies in accordance solely with the number of trains of impulses which have been transmitted to the repeater. The term " train includes a single impulse for any purpose. As described, incoming A.C. impulses are repeated as D.C. impulses, trains of A.C. impulses for switch setting being repeated as loop impulses, while subsequent control impulses, e.g. for toll cut-in, breakdown and re-ring, are repeated as leg impulses. The repeater may subsequently revert to loop impulsing conditions. A seizing A.C. pulse operates AC, A, and B pulls up, locks and loops the outgoing side when A falls back at the end of the pulse. Trains of A.C. impulses are repeated over the loop by A, relay C being operated at the commencement of each train to step a counting switch SPM, SPB. After five trains, DC is operated over SPB and locks up so that further control impulses are repeated as leg impulses over the negative wire to operate a differential relay in a subsequent switch for the purposes mentioned above. If the wanted line is idle, current reversal on reply operates D so that E (upper) is energized during the period of slow-operating relay DR and sends back a pulse of A.C. as a supervisory signal to an operator or to operate a calling subscriber's meter. If the called party desires to attract the operator's attention he flicks the switchhook so that relapses of D operate E (lower) to send back A.C. pulses. If the called party releases, an A.C. pulse similarly transmitted is terminated by the relapse of DR. When the calling party or operator releases, a pulse of A.C. operates relays AC, A sufficiently long to shunt down B which opens the outgoing loop and connects up a pair of common relays R, S which interact to home the counting switch. Relays R, S are common to the exchange. As shown, coil RPC has a phantom tap.
Patent GB-341811-A (GB)
IPC: H04N7/12
Filed: 1930-04-25
Abstract: 341,811. Television. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Kell, R. D. ; 111, Sanders Avenue, Scotia, New York, U.S.A.) April 25, 1930, No. 12805. Convention date, April 25, 1929. [Class 40 (iii).] After signals have been transmitted corresponding to all the elemental areas of an object, only changes in illumination or position are subsequently transmitted. This is accomplished in a television system by supplying the signals from photo-electric cells 16, Fig. 1, to one half 22, of the primary of transformer 19, the other half 21 being supplied with the same signals but delayed for one complete picture period by a phase controller 20, for example of the type described in Specification 252,408, [Class 39 (i), Electric lamps, Arc &c.]. If no change has occurred in any particular element during that period the two signals cancel each other, as regards their effect on the secondary of the transformer 19, which supplies the transmitter 17. At the receiver a double rotary distributor, (Fig. 4, not shown) supplies pairs of coils, each pair corresponding to one picture element, one coil 37, Fig. 5, unlocking the elements 24, Fig. 3, by releasing the spring 39, and the other 36 shifting them to an extent depending on the change in illumination of the corresponding element at the transmitter. If no change has occurred no signal is received by the coils 37, 36 and the element 24 remains locked ands tationary. The elements 24 have pyramidal or conical ends which project to a greater or less extent through square openings in a screen 23 and reflect more or less light from sources near its periphery. They are supported for movement on pivoted arms 35.
Patent GB-400300-A (GB)
Title: Means of attaching wire mesh or mattress surfaces to lateral head and foot elements of mattress frames
IPC: A47C23/145
Filed: 1932-05-04
Abstract: 400,300. Mattresses. MOORHOUSE & CO., Ltd., J. H. and MOORHOUSE, P. F., 10, Cable Street, Manchester. May 4, 1932, No. 12812. [Class 52 (iv).] The wire mesh w forming a mattress surface is secured to a wooden end bar a provided with a hinged cap b to conceal the securing means.
Patent GB-247439-A (GB)
Title: Improved process for the production of alkali metal silicates which are soluble in water
IPC: C01B33/32
Filed: 1925-05-16
Abstract: 247,439. Kilburn, B. E. D., (Norsk Hydro- Elektrisk Kvaelstofaktieselskab). May 16, 1925. Nitrogen oxides; silica; alkali metal compounds, obtaining from complex silicates. Nitrogen oxides, and alkali silicates are obtained by heating a mixture of hydrated silica with alkali - citrate or nitrite or both. The silica may be diatomite or the residue obtained in treating silicates such as leucite and labradorite with nitric acid. The alkali nitrate employed may be obtained from the same natural silicate. The temperature employed in such as not to cause fusion of the mass.
Patent GB-179554-A (GB)
Title: Arrangements for the measurement of large volumes of water for water turbines
IPC: G01F1/40
Filed: 1922-05-06
Abstract: 179,554. Bopp & Reuther. May 6, 1921, [Convention date]. Venturi apparatus. -Water supplied to turbines is measured by a shaped tube M inserted before the contracted discharge end of the conduit.
Patent GB-727159-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64D11/00
Filed: 1952-05-21
Abstract: 727,159. Entrance stairs for aircraft. BLACKBURN & GENERAL AIRCRAFT, Ltd., BRUMBY, H., and WARBURTON, D. S. May 19, 1953 [May 21, 1952], No. 12875/52. Class 4. An aircraft having a passenger compartment above a freight compartment closed off by a pair of clam-shell doors, is provided with an internal stairway giving access to the passenger compartment and constructed part in one and the remainder in the other of the clam-shell doors. The aircraft comprises a fuselage 6 containing a freight compartment closed at the rear by a pair of clam-shell doors 7<SP>1</SP>, 7<SP>2</SP> and a tail boom 8 comprising a passenger compartment. The door 71 carries internally a landing 10 from which steps 11 rise as far as the division between the doors to the level of a further landing 16 mounted internally on the door 7<SP>2</SP>. Steps 17 lead from the landing 16 to the floor of the passenger compartment in the boom 8 which is entered through a hatch 18. Access to the landing 10 is through entrance 12 in the wall of door 71, provided with a downwardly hinged door 13 formed on its inner face with steps 14. When passengers, instead of freight are accommodated in the fuselage 6 the door 7<SP>1</SP> carries an additional stairway unit comprising a landing 36 and stairs 37 leading to a lower deck and stairs 38 leading to an upper deck. An entrance 42 similar to the entrance 12 is provided. Toilet compartments may be mounted on the door 72 below the stairs 17 and certain stairs may be enclosed.
Patent GB-672092-A (GB)
Title: Improvements in or relating to casting reels
IPC: A01K89/015
Filed: 1950-05-23
Abstract: 672,092. Fishing-reels. KEATES, A. E. May 23, 1950 [June 1, 1949; April 29, 1950], No. 12882/50. Class 48. In a fishing-reel wherein a rotatable spool 7 is stationary during casting while the line 9 unwinds about an end 22 of the spool, the line 9 is guided through an opening 25 aligned with the spool axis and a member 27 is arranged to intercept the line where it unwinds about the spool-end 22 to enable the line to be wound up by rotation of the spool. As shown the spool 7 is screwed onto a shaft 11 which is rotatable in a bearing 15 formed in the cover 12 of a spool-housing 13, a brake-disc 18 forming a hand-wheel being secured to the shaft 11 outside the cover 12. To provide for the more even winding up of the line during rotation of the spool, the outer spool-flange 22 round which the line moves during casting overhangs the centre of the base of the line-receiving recess 8 of the spool. The member 27 comprises a pin guided in a bore in the housing base 14 and normally spring-urged into engagement with a peripheral recess 30 of the spool flange 22, a hand-knob 41 projecting outwardly from the member 27 and having a pin and slot connection with the base 14 for retraction and retention of the member 27 out of engagement with the recess 30.
Patent GB-913397-A (GB)
Title: Nuclear reactor plant
IPC: F01K3/18
Filed: 1961-04-10
Abstract: 913,397. Nuclear power plant. SULZER FRERES S.A. April 10, 1961 [April 11, 1960], No. 12902/61. Class 39 (4). In a nuclear reactor power plant, superheated steam is generated in two separate circuits, one of which supplies the turbine while the other supplies steam to an external vaporizer which vaporizes the turbine condensate before returning it to the reactor. As shown, the turbine 9 is supplied with superheated steam from the reactor 1 or a and c. The condensate from 9 is vaporized in 3 and returned to the reactor at o. Superheated steam is circulated through the vaporizer by the pump 5. The cleaning unit 18 is in series with turbine 16. In further embodiments, not shown, high and low-pressure turbines are employed with interstage reheating effected either directly from the reactor or from a heat-exchanger heated from the reactor. An ion-exchange purifier operates continuously on the working fluid.
Patent GB-347875-A (GB)
Title: Improvements in talking machines
IPC: G11B17/00
Filed: 1930-04-26
Abstract: 347,875. H and driving-mechanism. THORENS, SOC. ANON. H., Ste. Croix, Vaud, Switzerland. April 26, 1930, No. 12935. Convention date, Sept. 13, 1929. [Class 136 (ii).] Relates to gramophones in which the winding crank is hinged to an inclined spindle, and can be folded upon the machine casing when not in use. According to the invention, the winding spindle 5 is connected by a hinge 18 at the point where it projects through the casing, to a sleeve 17 carrying the crank 6, which is capable of being folded in one direction only relatively to the spindle ; the connection between the sleeve 17 and the crank is made by a pin and slot 20, 19, so that when the crank is to be brought from the operative position (Fig. 1) to that which allows it to be folded down on the casing, Fig. 4, it is given a limited rotation in the direction opposite to that required for winding. The sleeve 17 is fixed to a member 15 having a tongue 14 which is pivoted at 18 to the slotted end 13 of the spindle 5, the end of the tongue at the inner end of the slot being rounded off at one corner only to permit of a folding movement to one side only of the axis of the spindle 5. The latter is connected by a ball-and-socket joint 7 to a spindle 4 directly gearing with the motor 3.
Patent GB-1011945-A (GB)
Title: Collapsible shelter
IPC: E04H15/52
Filed: 1964-03-26
Abstract: 1,011,945. Collapsible tents; spring clips; latch fastenings. M. J. HOINESS and W. E. PETERSON. March 26, 1964, No. 12938/64. Headings E1A, E2A and E2B. A collapsible shelter consists of roof and floor frame units 1, 2 of circular, rectangular or arcuate configuration which are interconnected by folding side frames 11, the side frames being pivoted to the frame units 1, 2 and each consisting of two sections 12, 13 interconnected by a spring-loaded pivotal latch connection as shown in Fig. 8. The frames may be made of aluminium or steel tubing and receive a flexible light-weight cover consisting of roof, floor and side panels having an opening or door, the cover being formed as a one-piece unit for enclosing the frame or suspension therefrom. A clip, Fig. 5, for releasably securing a tube 4 to a base member 14, 16 consists of a circular portion 17 having end socket portions 18 shaped as shown to engage the opposed arcuate edge flanges 19 of the base member.
Patent GB-1001963-A (GB)
Title: Improvements in or relating to detergent compositions in bar form
Inventor: WARD NORMAN ERNEST
IPC: C11D17/00
Filed: 1960-08-31
Abstract: A detergent composition in bar form comprises a mixture of preformed soluble soap and at least one preformed alkaline earth metal, magnesium, zinc or aluminium salt of a C10-18 primary or secondary alkyl sulphate.  The mixing of the salt and soap is carried out under conditions such that exchange of cations does not take place, i.e. with insufficient water to make the mixture fluid, or if more water than this is present the mixing is achieved quickly and the product dried immediately.  The soap may be a conventional alkali metal soap, e.g. one derived from a mixture of tallow with coconut or palm kernel oil, while suitable salts are Al and Zn lauryl sulphates, Ca "coco" sulphate, and Al, Mg, Zn, or Ca C12-15 secondary alkyl sulphates.  A small proportion of free saturated C10-18 fatty acid (e.g. lauric acid, or hydrogenated fatty acids comprising 50% coconut and 50% tallow) may be present, as also may be perfume, colour, opacifiers, superfatting agents and germicides.
Patent GB-1276213-A (GB)
Title: Process for the dyeing of linear polyesters in the mass
IPC: C09B57/14
Filed: 1970-03-18
Abstract: 1276213 Man dyed polyesters FARBWERKE HOECHST AG 18 March 1970 [18 March 1969] 13016/70 Heading C3R Linear polyesters are treated with a dyestuff of the benzothioxanthenedicarboxylic acid imide type of structure wherein R is a C8-C20 alkyl group, R 1  and R 2  are each hydrogen, halogen, alkyl, alkoxy or carbalkoxy, either at the condensation stage or prior to final mixing and shaping of the polyester. The polyester may be poly(ethylene terephthalate) or poly(1 : 4-dimethylol cyclohexane terephthalate).
Patent GB-1351874-A (GB)
Title: Process for preparing linear polyesters
IPC: C08G63/87
Filed: 1971-05-04
Abstract: 1351874 Polyesters MITSUBISHI RAYON CO Ltd 4 May 1971 [2 June 1970 3 June 1970 (2) 9 June 1970 11 June 1970 (2) 30 June 1970 20 Oct 1970 21 Oct 1970] 13040/71 Heading C3R [Also in Division B1] Linear polyesters or copolyesters are produced by condensing a glycol terephthalate in the presence of an antimony-containing polycondensation catalyst and at least one compound which is (1) an α-hydroxycarboxylic acid having 2-30 carbon atoms, (2) an α, #- dioarboxylic acid having 4-30 carbon atoms, (3) a sulphur-containing derivative of (1) or (2) formed by substitution of at least one sulphur atom for at least one oxygen atom of the hydroxyl or carboxyl group thereof or (4) an ester, amide, acid anhydride, mixed acid anhydride or acid halide of acid (1) or (2) or sulphur-containing derivative (3), the molar proportion of antimony atom contained in the polycondensation catalyst to compound (1), (2), (3) or (4) being from 1 : 0À5 to 1 : 3. Numerous examples of suitable compounds (1), (2), (3) and (4) are given. Suitable antimonycontaining catalysts are antimony trioxide, halides, sulphide, glycoxides, phenoxide, alkoxides and carboxylates, and antimonic and antimonous acids and metal salts thereof. Other polycondensation catalysts, e.g. compounds containing zinc, silicon, germanium, cobalt, tin, lead and titanium, may be present.
Patent GB-846352-A (GB)
Title: A slip coupling comprising spring-loaded balls
IPC: F16D7/08
Filed: 1958-04-24
Abstract: 846,352. Slip-couplings. GELENKWELLENBAU G.m.b.H. April 24, 1958 [July 24, 1957], No. 13052/58. Class 80 (2). Frusto-spherical recesses 1a in a disc 1 are engaged by balls 3 mounted in a cage 4 and abutted by a thrust-plate 5 biased to engage the balls in the recesses by plate-springs 10, keys 6 allowing a flanged sleeve 7 to be adjusted axially of the coupling to vary the compression of the springs. Needle roller bearings 9 support the flanged sleeve 7 upon a central bolt 8 holding the coupling together. The coupling is surrounded by a sheet-metal casing 11.
Patent GB-1206564-A (GB)
Title: Electrical lead-through device
IPC: H01B17/30
Filed: 1969-03-12
Abstract: 1,206,564. Lead-in insulators. DEUTSCHE STEINZEUG-UND KUNSTSTOFFWARENFABRIK. 12. March, 1969 [12 March, 1968], No. 13077/69. Heading H2C. A pressure and vacuum-tight electrical lead-in device comprises metal collars 9, 10 sealed to conductors 11 interconnected by a member 12 of stranded copper or powdered metal which deforms more easily than seals, between metal collars 9, 10 and a ceramic sleeve 8, preferably alumina. The deformability of member 12 prevents harmful stresses being set up in the collar/sleeve seals during the formation of the conductor/collar/sleeve seals by hard soldering. A bushing 13, sealed to sleeve 8, is soldered in an aperture in a metal wall.
Patent GB-144073-A (GB)
Title: Improvements in protective gear for alternating current systems
IPC: H02H3/30
Filed: 1919-05-24
Abstract: 144,073. Pearce, H., and Metropolitan-Vickers Electrical Co. May 24, 1919. Cut-out systems.-Protective gear for alternating-current systems comprises relays responsive to faults or short circuits between separate conductors, and also relays responsive only to earth-faults, the latter being more sensitive than the former. In one arrangement, Fig. 1, two sets of three-phase feeders 1, 2, 3 and 4, 5, 6 are protected by three relays 20, 21, 22 responsive to internal faults and a more sensitive relay 24 responsive to earth-faults. Each relay 20, 21, 22 is connected across a pair of equi-potential points in the circuits of series transformers and carries a corresponding leakage current when the balance of the transformer circuits is disturbed; whereas the relay 24 is connected to all the three relays 20, 21, 22 in common and carries the algebraic sum of such currents. In order to prevent the relays 20, 21, 22 from operating when one set of feeders is switched in before the other, they may be adjusted to respond to an out-of-balance current greater than the normal full-load current. These relays may also be provided with time-limit devices. Alternating-current relays.-The individual relays may be designed as shown in Fig. 5. The actuating-winding is placed on a core 28, and the attracted armature 29 is attached to an auxiliary armature 31 which is subject to the restraining- influence of three coils 33, 34, 35 respectively connected to the three phases of the series transformer circuit. The object of the restraining- coils is to avoid chattering and improve the balance under heavy-current conditions. Resistances or reactances may be added for the latter purpose. The Specification describes in detail the application of the invention to singlephase feeder systems, two-phase four-wire feeder systems and three-phase generators. In order to avoid simultaneous cutting-out of two sets of feeders in the event of a fault on either set, the earth-current relay is constucted as a watt-meter relay, of which the current coil is connected like the coil 24, Fig. 1, and the potential coil is energized by a transformer connected between a neutral point of the system and the earth. Fig. 12 shows the invention applied to a Merz-Price balanced voltage protective system having pilot wires 50, 51, 52 joining up transformer and relay circuits at opposite ends of one set of feeders.
Patent GB-550406-A (GB)
Title: Improvements relating to packings for water cooling and like towers
IPC: B01J19/32
Filed: 1941-10-10
Abstract: 550,406. Washing gases. GAS LIGHT & COKE CO., and SPIVEY, E. Oct. 10, 1941, No. 13112. [Class 55 (ii)] [Also in Group XIII] In a packing consisting of superimposed layers of spaced vertical thin boards 8 arranged with the boards of each layer running transversely to those of the adjacent layers, the ends of the boards rest on notched bearers 4 so carried on separate supports in vertical walls or posts 1 that the weight of any layer is not transmitted to the layer below it. The ends of the bearers fit into vertical grooves in the posts 1 and rest on blocks 5 secured in the grooves. The bearers are notched at the top and bottom to receive the thin boards, which are serrated along their lower edges. The bearers may be supported on angle brackets secured to the vertical irons on the side walls of a tower. The boards are spaced transversely by wood strips extending down the whole depth of the packing and supported by transverse pegs. Some of the boards in the upper layer may be thicker than the others to support the troughs of the liquid distributing system. Specification 487,946 is referred to.
Patent GB-770425-A (GB)
Title: Improvements in or relating to pipe coupling means
Inventor: PROSSER SIDNEY WALTER
IPC: F16L19/02
Filed: 1954-05-05
Abstract: 770,425. Pipe couplings. HEADLAND, Ltd., T. P. May 5, 1955 [May 5, 1954], No. 13120/54. Class 99(1) ' In a pipe coupling means a ball 2 is bored to receive a pipe 1, the ball 2 being secured on the latter by longitudinally compressing the pipe to bulge it outwardly to engage and lock the ball 2. The pipe 1 which passes through the hardened steel ball 2 is formed with two bulges 5, 6, the radii thereof being such that the outer surfaces are nipped by the tapering flutes 4, provided in the ends of the bore, when a locking nut 9 is tightened upon'a union 7; the latter has a seat for the ball 2, a corresponding seat in the locking nut being comprised by a thimble 10 which may be separate from or integral with the nut. A circlip .12 may be used to clamp the locking nut into the union threads. The ball may be split into two parts. Specification 770,424 is referred to.