baber/WOPTO huggingface dataset:
Patent GB-721501-A (GB)
Title: Silencing means for exhaust gases
IPC: B64F1/26
Filed: 1952-08-29
Abstract: 721,501. Exhaust silencers. WIGLE, L. G. Aug. 29, 1952 [Aug. 30, 1951], No. 21761/52. Class 7 (2). Exhaust gases are discharged from a nozzle 11a, e.g. the nozzle of a gas-turbine engine or a rocket motor, into an open-ended conduit 14 which is axially spaced from the nozzle and has sound-absorbing walls 14a, e.g. wire wool held in place by perforated sheet, and sound waves from the gases propagated through the space between the nozzle and the conduit are suppressed by sound-absorbing means in a cooling- air inlet passage leading to the space between the nozzle and conduit. The air inlet passage may be constituted by an enclosure 13 provided with an air gap 25 and insulated from an adjacent test house 10, in which an engine 11 is situated, by an air gap 15 and a sponge rubber sealing ring 16 surrounding the nozzle openings in the house 10 and enclosure 13. The soundabsorbing means in the air inlet passage may comprise three sets of inclined rectangular vanes 26 the lower edges of which are hinged to the walls of the enclosure 13, the upper edges being interconnected by links 27 embodying screw-jacks 271 whereby the incidence of the vanes may be varied to control the rate of flows of air through the passage. A mixing tube 18 which may be disposed between the nozzle 11a and the conduit 14 is provided with a flanged frusto-conical member 19 spaced from the flange 18a of the tube and defining an adjustable cooling air passage 21. The cross-sectional area of the inlet of the tube is greater than that of the stream of gases, and the smaller diameter of the member 19 is equal to the diameter of the diverging cone of the stream of gases from the nozzle. The tube has a flange 22 which restricts an annular cooling air gap 23 between the overlapping ends of the tube and the conduit 14 ; alternatively, the flange 22 may be mounted on the conduit. A narrow air gap 24 may be disposed around the conduit 14; and the test house 10 may be ventilated by one or more ducts 28 discharging into the conduit. The cooling air introduced into the gases may be augmented by water sprays.
Patent GB-883010-A (GB)
Title: Improvements in spring retaining collars
Inventor: BRUTON REGINALD
IPC: F16B39/24
Filed: 1959-06-25
Abstract: 883,010. Retaining rings. BRUTON BROS. Ltd., W. R. June 20, 1960 [June 25, 1959], No. 21777/59. Class 89(1). A spring retaining ring comprises a disc, having an aperture 1, and a dished portion 2, the latter having radial slots 3 to form tongues 5. The tips of the tongues have teeth 4 which when engaged over a stud or the like, are flexed so that they grip the stud. The ring has a rim 6 of part circular cross-section, and a dome shaped cover may be fitted, the edge of which is curled under the end 9 of the rim.
Patent GB-838767-A (GB)
Title: Improvements in and relating to electrical switches
IPC: H01H13/18
Filed: 1958-07-08
Abstract: 838,767. Press-button retractive switches. UNITED - CARR FASTENER CORPORATION. July 8, 1958 [July 23, 1957], No. 21931/58. Class 38 (5). A switch suitable for operation by the door 60 of a refrigerator comprises a push-button 28 which actuates, by a spring 32, a floating contact - member having three arms 34 disposed around a guide-pin 30 and positioned against an enlargement 38. When the door 60 is closed two of the arms 34 engage fixed contacts 42, 46, to complete a blower circuit, and on opening the door the pin 30 is forced by a spring 48 to move two of the arms 34 to engage fixed contacts 40, 44, and so complete a lamp circuit (Figs. 2, 8, 9, not shown).
Patent GB-517337-A (GB)
Title: Improvements in or relating to the production of water-repellent fibrous materials
IPC: D06M13/184
Filed: 1938-07-23
Abstract: 517,337. Aromatic carboxylic acid derivatives. I. G. FARBENINDUSTRIE AKT.-GES. July 23, 1938, No. 21936. Convention date, July 26, 1937. [Classes 2 (ii) and 2 (iii)] [Also in Group VIII] Fibrous materials are rendered water-repellent by treatment with an organic aromatic compound containing an -OH or -SH group in o-position to a COOH group and also an organic radicle having at least 10 carbon atoms directly connected to each other, and with a soluble chromium salt, e.g., chromium acetate. Suitable organic compounds are stearoyl-p-aminosalicylic acid, isoheptoyl-p-aminosalicylic acid, lauroylp-aminosalicylic acid, (the three compounds being obtainable by acylating aminosalicylic acid with the respective fatty acid chlorides) stearoyl-p-aminothiosalicylic acid (obtainable from the sodium salt of 5-nitro-2-chlorobenzoic acid, by reacting with sodiumtetrasulphide, reducing with hydrosulphite and condensing with stearic acid chloride), 4-stearylsalicylic acid, p-isododecylphenol-o-carboxylic acid, (the last two compounds being obtainable by reacting an. alkylated phenol with carbon dioxide as described in Specification 460,282), benzene - 1 - octadecylmercapto methylene - 4 - hydroxy-5-carboxylic acid (obtainable from p-chloromethylsalicylic acid and octadecylmercaptide), N - octadecyl - N1 - p - hydroxy - m - carboxyl-phenyl-urea (obtainable from aminosalicylic acid and octadecyl-isocyanate), N- octadecyl - p - hydroxy - m - carboxyl - phenyl sulphonamide (obtainable from octadecylamine and salicylic acid sulphochloride), 4-hydroxydiphenyl-3-carboxylic acid (see J. Am. Chem. Soc., 58, page 1738 et seq.), the alkylation product of 2.3-hydroxynaphthoic acid with dodecylene, the condensation product of isooctyl-phenol-o-carboxylic acid with formaldehyde, and the reaction product of salicylic acid-disulphochloride with 2 mols of dodecylamine.
Patent GB-961479-A (GB)
Title: Planetary change-speed gear systems
IPC: B62M11/14
Filed: 1962-06-06
Abstract: 961,479. Change speed epicyclic gearing. FICHTEL & SACHS A.G. June 6, 1962 [June 10, 1961], No. 21963/62. Heading F2D. In a sun, ring and planet change speed gear, the planet gears are asymmetrically disposed round the sun gear. In a three-ratio hub gear a sleeve 3, splined to a driving member 2, is moved axially by a thrust block 17 and chain 39 to provide high gear with teeth 6 on the sleeve engaging teeth 7 in the planet carrier 11; the drive being from sprocket 1 through member 2, sleeve 3, planet carrier 11, planets 12, ring gear 10, a freewheel 14 and a drive ring 36 coupled to the hub shell 15. Middle gear is provided by engagement of the teeth 6 with internal teeth 8 in the ring gear 10 to provide direct drive to the ring gear 10 and thence through the freewheel 14 to the hub-shell 15. Low gear is engaged by extreme rightward movement of the sleeve 3 moving the freewheel 14 axially such that the pawls are disengaged by a control face 41; the drive then being through the sleeve 3, ring gear 10, planets 12, planet carrier 11, back pedal brake member 42 and a second freewheel 19 to the hub-shell 15. By asymmetric spacing of the planet gear spindles 13, it becomes unnecessary to make the sum of the tooth numbers of the sun and ring gears divisible by the number of planet gears. In a second embodiment for a two-speed hub gear, the drive from the sprocket is directly to the planet carrier, and the sliding sleeve couples either the ring gear or the planet carrier through a single freewheel to the hub shell. The drive may be alternatively applied to the ring gear and the freewheel may be on the input side of the system. Reference has been directed by the Comptroller to Specification 826,892.
Patent GB-1450495-A (GB)
Title: Inflation apparatus for vehicle occupant protection bag
IPC: F16K17/40
Filed: 1974-05-17
Abstract: 1450495 Combustion chambers generating combustion gases under pressure ALLIED CHEMICAL CORP 17 May 1974 [1 June 1973] 21966/74 Heading F1L [Also in Division B7] Apparatus 10 for inflating a crash bag 30 upon receipt of an electric current from an impact detection means 34 responsive to vehicle impact, comprises a container 12 for receiving pressurized gas through a valved inlet 36, a gas generating material 18, e.g. single base propellant such as nitrocellulose, or composite propellant such as ammo-  nium perchlorate-polyvinyl chloride, a squib 42 for igniting the material 18 upon receipt of the electric current from means 34, a housing 24 for the material 18, and a seal 26 for separating the interior of container 12 from both the bag 30 and the material 18, the seal 26 being rupturable upon ignition of the material 18, whereby gas from material 18 admixes with gas in container 14 before passing the mixture via a conduit 50 to the bag 30 to inflate the same. Conduit 50 is formed between housing 24 and an exterior casing 48. A diffusing plate 54 with holes 56 abuts a plate 55 slidable in casing 48, so that gas from material 18 passes through holes 56 to act on plate 55 and thus break off seal 26. Instead of a cylindrical housing 24, an annular one may be used, the gas generating material being located in the annular interior thereof and the conduit 50 being through the centre of the housing Figs. 3 and 4 (not shown).
Patent GB-491685-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J21/06
Filed: 1937-08-10
Abstract: 491,685. Discharge apparatus. STANDARD TELEPHONES & CABLES, Ltd. Aug. 10, 1937, No. 22008. Convention date, Oct. 7, 1936. [Class 39 (i)] The enclosing vessel of an electron - discharge device is composed of several parts secured together, one part supporting one or more electrodes of an electrode assembly and one or more contact members adapted to be grasped by contacts of electrodes of the assembly supported by another part, the contacting device being capable of movement lateral to that necessary to bring the parts together, whereby the electrodes carried on the separate parts may be aligned with each other. In the form shown, two electrode assemblies are carried by a structure consisting of two concentric cylinders 24, 27 each having top and bottom closure members, the outer cylinder 27 being metallically connected to a central post 13 from which the inner cylinder 24 is carried by insulators. The filamentary cathodes 11 are carried by the cross-bar 12 and J-shaped springs 15. The anodes 40 are supported by leads 44 passing through the top of the envelope. Each assembly forms a pentode comprising a control grid 21, Fig. 3, of U-shaped parallel wires secured to arms 17 extending from support rod 20, screen and suppressor grids 23, 26 of similar construction secured to cylinders 24, 27 respectively by welded bracing wires 25, 28, and a hollow crescent-shaped anode 40. The suppressor grids have solid end pieces 39. The connection to the shield grid is made by a blade 54 attached to the lead 53 and engaging two resilient strips 50 extending between studs 47 welded to the inner cylinder 24. Resilient wires 69 press against the insulators 48 surrounding the studs 47 and permit a slight rotary adjustment of the cylinders 24, 27. A shielding flange 38 extends from the bottom of cylinder 27. In a modification, the filament is a flat strip and the anodes are of carbon with three diverging flanges, the support rod passing through the centre flange. The cylinders 24, 27 act as a large surface condenser connected between the screen and suppressor grids.
Patent GB-239055-A (GB)
Title: Improvements in vacuum-jacketed bottles
IPC: A47J41/02
Filed: 1924-09-19
Abstract: 239,055. Wilhelm, T. Sept. 19, 1924. Cold and heat retaining vessels. -A vacuumjacketed vessel 15 is secured in a casing, composed of two separable parts 12, 13, by means of a flexible metal sleeve 4 which is secured over a resilient rubber &c. ring 1 around the neck of the vessel and has a flange 2 bearing on the shoulder 3 of the vessel. The sleeve 4 is threaded to engage the threaded upper part 13 of the casing. The resilient ring 1 may occupy a groove in the neck of the vessel, as shown in Fig. 3. The drinking-cup 14 is screwed over the casing part 13. The exhausting nipple 20 is protected by a resilient rubber &c. cap 21. The vessel 15 is held stationary in the casing but is free to expand and contract owing to the resilience of the ring 4.
Patent GB-954242-A (GB)
Title: Process for polymerising vinyl chloride
IPC: C08F14/06
Filed: 1961-06-20
Abstract: Polyvinyl chloride is made by polymerizing vinyl chloride in the presence of a preformed catalyst made by dissolving an organoaluminium compound of the general formula: AlR1R2R3 in which R1, R2 and R3 represent straight-chain alkyl radicals, in an inert hydrocarbon or cyclic ether solvent and treating the resulting solution with molecular oxygen, or an oxygen-containing gas.  The organoaluminium compound may be aluminium triethyl. Specified solvents are petroleum ether, benzene, tetrahydrofuran, and dioxane. The polymer may be recovered and purified with methanol, concentrated hydrochloric acid and water.
Patent GB-1520999-A (GB)
Title: Cassette tape recorders
IPC: G11B15/675
Filed: 1976-05-28
Abstract: 1520999 Front-loading cassette tape recorder NEW NIPPON ELECTRIC CO Ltd 28 May 1976 [31 May 1975 (3)] 22255/76 Heading G5R A front-loading audio cassette tape recorder has a cassette loading platform 22, Fig. 2, pivotable from a cassette receiving and discharging position inclined to the horizontal to an operative position in which the platform 22 and loaded cassette 8 are horizontal and a cassette receiving chamber 4, Fig. 1, having an access opening 7 and means 13, 14 which guide a manually inserted cassette 8 horizontally to the front, upper end of the platform 22 in its inclined position. As the cassette 8 is moved towards platform 22, which is biased by a spring 58, Fig. 2, to its inclined position, the cassette 8 slides on a bottom wall 15 of an insertion section 11 of chamber 4 and is laterally guided by shoulders 13, 14, the opposite ends of the cassette bottom sliding on the shoulder 13. As the cassette is further manually inserted on to platform 22 it is guided by L-shaped members 67 thereon until its inward face abuts against a bar 95 on a spring biased shaft 92 and pushes the bar 95 back until the bar hits a stop (96) Figs. 6, 7 (not shown). Platform 22 can then be pivoted downwardly, initially manually and then automatically by spring 58, to the horizontal operative position of the cassette, Figs. 10, 11 (not shown), the outward face of the cassette sliding over surfaces 24, Fig. 2, of guides 25 during this movement. In the operative position, a leaf spring 98 on stop (96) engages the top face of the cassette, its bottom face being spaced slightly from platform 22 and supported by a pin 62 and surfaces 28 on guides 25. A second cassette (8b), Fig. 11, is prevented from being inserted while a first is in the recorder by a door 38 of opening 7 if closed, or, if the door 38 is open, by the second cassette (8b) abutting against parts of the guides 67 on the now horizontal platform 22. To aid loading, a mirror 31 may be provided in loading section 12, Fig. 2. Cassette ejection can only be effected if the door 38 is held open by hooks 52, Fig. 2, the pushing of an eject button 76, Fig. 1, then moving a slider 74 to pivot a push-up lever 75 causing upward pivoting of the platform 22. As platform 22 swings up and the outward face of the cassette clears surfaces 24 of guides 25, a spring (99), Figs. 6, 7, operates to push bar 95 whereby the cassette 8 is ejected into the insertion section 11, its ejection movement being arrested by a stop 41 at opening 7. During ejection the cassette is guided from an upwardly inclined motion on platform 22 to a horizontal motion on bottom wall 15 by guides 32 (Fig. 13, not shown). The door 38 may be released from its open position locked by hooks 52 by pressing a button 10, Fig. 1. In the closed position of the door 38, the motion of slider 74 to effect ejection is blocked by a member 73, door 38 engaging a lever 72 on opening to thereby lower member 73 so that a notch 81 therein is opposite slider 74 to permit the ejection motion thereof.
Patent GB-675514-A (GB)
Title: Improvements in earth leakage protection for polyphase electrical circuits
Inventor: CROWTHER FRED
IPC: H02H3/17
Filed: 1949-08-26
Abstract: 675,514. Protective cut-out arrangements. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 8, 1950. [Aug. 26, 1949] No. 22282/49. Class 38 (v). An earth-leakage protective arrangement has a relay and a local source of supply connected between star-connected rectifiers and earth, so that should an earth fault develop whilst the protected circuit is dead, the relay is energized through the fault path to prevent the closure of a circuit-breaker or contactor. If the neutral of the main supply is unearthed this arrangement may produce the tripping of the circuitbreaker in the event of a fault when the protected circuit is alive, but if the neutral is earthed additional protective means are necessary. Fig. 6 shows the arrangement applied for the protection of a motor M; when a fault develops with the contactor C3, open current from the transformer secondary winding 6 flows through the relay coil R, closed contacts C1, rectifiers 8, the motor and the fault. The relay R opens its contacts R1 to prevent the energization of the closing coil C of the contactor C3, so that the contactor cannot be closed until the fault is removed. Under normal conditions with the contactor C3 closed and the motor running, contacts C1 are open, so that should a fault occur, the current which flows from the phase conductors through the fault, relay coil R, and rectifiers 8 is limited by an impedance 9. Fig. 11 shows the motor M of a mining appliance supplied from a main supply having an earthed neutral and controlled by a switch 20 remote from the contactor C3. When the contactor C3 is open, the local supply source 6, relay RP and rectifiers 8 function as described above, but when the contactor is closed, the earthed supply neutral would prevent the satisfactory operation of this arrangement. Thus when the contactor is closed, contacts C1 open and in the event of a fault the relay RP is energized by the rectified output of the secondary winding of a corebalance transformer T. In either case when the relay RP is energized it opens contacts RP1 to open the circuit of the relay S, which has its coil in the remote control circuit and its contacts S1 controlling the closing coil C of the contactor C3. The core-balance transformer may operate a separate protective relay (Figs. 7 and 8, not shown) and the output of the transformer winding 6 may be rectified (Figs. 4 and 8 not shown). Specifications 605,927 and 658,823 are referred to.
Patent GB-1409786-A (GB)
Title: Quenching of polymeric film
IPC: B29C48/92
Filed: 1972-05-12
Abstract: 1409786 Electrostatic pinning of films IMPERIAL CHEMICAL INDUSTRIES Ltd 17 April 1973 [12 May 1972] 22341/72 Heading B5B In apparatus for electrostatically pinning a molten polymeric film 1 to an electrically earthed casting surface 2 comprising a pinning wire electrode 8 extending transversely across the casting surface in the proximity of or prior to the region of first contact of the film thereon, the dielectric insulators 12, 13 located beyond the film edges are movable along the wire electrode by an amount corresponding to any transverse fluctuations that may occur in the film edges by means activated by a sensor of the transverse fluctuations of the film edges so that sparking between the wire electrode and the margins of the casting surface is impeded. In Fig. 2, the pinning wire is held under slight tension between fixed points 15, 16, and the tubular insulators 12, 13 which may be of polytetrafluoroethylene are gripped by clamps 18, 19, suitably of reinforced urea-formaldehyde or phenol-formaldehyde resin mounted on carriers 20 and 21, located in a guide channel not shown. The rack and pinion mechanisms 22, 24 and 23, 25 are driven by electric motors controlled by a relay circuit connected to edge sensors downstream of the casting drum which bear against the edges of the film and monitor the edge fluctuations. Actuation of the motors by the relay circuit moves cameras 20, 21 along the guide channels so that insulators 12, 13 are moved by a distance corresponding to the movement of the film edges and in the direction of the film edge movement, ensuring that the insulators remain slightly overlapping the film edges. In a modification the movement of the insulators is controlled by the comparison of output signals derived from potentiometers coupled to the drive for the casting drum 2 and that for the cameras 20, 21 as it has been found that the film edge fluctuations are proportional to changes in the linear speed of the films. Contamination of the wire by condensation of volatile matter may be avoided by electrically heating it or by impinging a hot gaseous blast thereon. In Fig. 3, a wire electrode 8 is drawn from a supply reel 28, traversed across drum 2 and wound up on reel 29 driven by motor 30, its movement and tension being governed by torque limiter 31. The wire is energized at terminal 32. This avoids wire contamination otherwise caused by condensation of volatile matter on a static electrode. In order to position the electrode accurately in relation to the film it is passed around guide pulleys 33 and 34 made of dielectric material, e.g. urea-formaldehyde or phenolformaldehyde resin together with the tubular insulators 12 and 13 through which it is threaded. Film-forming materials with which the apparatus may be used include polycarbonates, polyamides, polyimides, polysulphones, polyolefins, polyvinyl chloride, linear polyesters and polyesterethers, but it is said to be particularly useful in the production of polyethylene terephthalate film.
Patent GB-1502120-A (GB)
Title: Cleaning ships sides container walls and like surfaces of ferromagnetic material
IPC: B63B59/10
Filed: 1975-05-23
Abstract: 1502120 Spray cleaning ferromagnetic surfaces W MAASBERG and H SCHEIDING 23 May 1975 [21 June 1974] 22464/75 Heading A4F [Also in Divisions B3 and B7] A ship or tank side 1 is cleaned by apparatus comprising hoist 2 traversably mounted on rail 14 on the ship or tank and cradle 3 suspended from it and movable on running gear 4 held against the side by magnets 5. The cradle carries cleaning apparatus in the form of high-pressure spray bar 7 to which supply conduit 8 leads from a supply module on the ship or tank. The supply conduit is a high-pressure hose which forms the hoist suspension and the supply module comprises a highpressure pump 6.
Patent GB-1254005-A (GB)
Title: Copolyamides and their production
Inventor: BUCKLEY ALAN
IPC: C08G69/42
Filed: 1969-05-02
Abstract: 1,254,005. Copolyamides. IMPERIAL CHEMICAL INDUSTRIES Ltd. 14 April, 1970 [2 May, 1969], No. 22509/69. Heading C3R. Copolyamides of reduced viscosity at least 0-5 consist essentially of repeat units A is an at least C 2  divalent organic radical and is -C 6 H 4 -SO 2 -C 6 H 4 - in at least 80% of the units while B is a divalent carbocyclic group in 3 to 36% of the units and -(CH 2 )nwhere n is 4 to 14 in the remainder. Preferred and optional features and applications are the same as disclosed in Specification 1,254,004 from the claims of which matter in common with those of this Specification is disclaimed. An alternative preferred process for preparing the copolymers of this invention is to use the diacid halide of the diacid and prepare the polymer in the presence of an acid acceptor in an organic solvent for both reactants which has a swelling or at least partial solvation action on the polymer. Reference is made to Specification 1,161,124.