baber/WOPTO huggingface dataset:
Patent GB-1357193-A (GB)
Title: Acoustic surface wave devices
IPC: H03H9/145
Filed: 1971-07-22
Abstract: 1357193 Acoustic surface wave devices MULLARD Ltd 22 July 1971 34368/71 Heading H3U An acoustic surface wave i.f. bandpass filter for T.V. has a launching transducer 2 comprising arrays 4, 5 of interdigitated electrodes mutually disposed transverse to the surface wave propagation direction 6 on a ceramic piezoelectric body 1, receiving transducer 3 being wide enough to receive and combine the surface waves from both arrays 4, 5. The polarity and overlap of successive pairs of fingers, each finger being several wavelengths long, in each array are varied, so that, after combination of the respective array outputs at receiver 3, the distribution of effective source strength may be varied over a range of 10 : 1 with only a 10 : 4 variation within either one array, Fig. 4 (not shown). The arrays may be connected in series, with a corresponding overall reversal of polarity of one of them, Fig. 2 (not shown). To each finger 7 of array 4, there exists a corresponding finger of array 5 on the same transverse line although some fingers may be omitted. Alternatively, Fig. 3, the overlap of adjacent fingers may be invariant, the width of each finger 47 being variable, and the receiving transducer may comprise a similar pair of arrays 58, 59 in series, with, however, equal width and overlap of fingers 57. The polarities of arrays 45, 59, or 44, 58, may be reversed throughout if desired. The roles of launching and receiving transducers may be reversed. The transducers are made by a photolithographic process from vapour deposited gold, manufacturing errors in each respective array tending to cancel.
Patent GB-521524-A (GB)
Title: Improvements in electric hand-lamps
IPC: F21L14/00
Filed: 1938-11-25
Abstract: 521,524. Hand - lamps. RAMAN, C. A. Nov. 25,1938, No. 34397. [Class 75 (iv)] An electric hand-lamp comprises an insulating handle 1 with ventilating ports 4 adjacent the socket 2 of the lampholder 3 and a protecting shield 8 made of transparent, non - splintering insulating sheet material, preferably that known under the Registered Trade Mark " Cellon," in the form of a cylinder or a truncated cone with ventilating slots 10. The outer end of the shield may be covered by a transparent lid but is preferably open and re-inforced by a rim 9. Reference has been directed by the Comptroller to Specification 500,603. 521,574. Electric furnaces. WESTERSCHULTE, L. Nov. 22, 1938, No. 34003. Convention date, Nov. 22, 1937. [Class 39 (iii)] A low frequency induction smelting furnace consists of a furnace space a into which open the two straight ends of a channel b which is provided with a chamber-like widened-out portion a' accessible from the outside, which may constitute another furnace space. Both spaces are substantially the same height as primary coil f. The furnace may be moved about the pins g.
Patent GB-445796-A (GB)
Title: Improvements in or relating to air loaded hydraulic accumulators
IPC: G01F23/20
Filed: 1934-11-30
Abstract: 445,796. Hydraulic accumulators. DAVY BROS., Ltd., Park Iron Works, Sheffield, and LOWE, F.F., 26, Chorley Drive, Fulwood, Sheffield. Nov. 30, 1934, No. 34461. [Class 69 (ii)] A vessel 7 carried at the top and bottom by counterweighted arms 12, 13 is in parallel with an airloaded hydraulic accumulator 1, the rise and fall of the vessel operating a switch or switches for starting and stopping the supply pump. An arm 13 carries a rod bearing a tappet 19 and acted on by an adjustable spring 20.
Patent GB-1438279-A (GB)
Title: Organic titanium compounds
IPC: C09K3/18
Filed: 1972-07-24
Abstract: 1438279 Organosilico-titanium compounds; curable silicone compositions IMPERIAL CHEMICAL INDUSTRIES Ltd 6 July 1973 [24 July 1972] 34477/72 Headings C3S C3T and C3F Novel silico-titanium compounds of the formula wherein R<SP>1</SP>, R<SP>2</SP> and R<SP>3</SP> independently denote organo or organosilicon groups, R<SP>4</SP>, R<SP>5</SP> and R<SP>6</SP> independently denote C 1-20  alkoxy, alkenoxy, acyloxy or trialkylsiloxy groups or one or two may be groups capable of forming a co-ordinate bond with titanium by donating two electrons from constituent O, N or S or one of them may be a group -R-SiR<SP>1</SP>R<SP>2</SP>R<SP>3</SP>, R denotes a divalent organic group of the formula: (a) -O-(C n H 2n )-O-, where n is an integer of not less than 3 and preferably not more than 12; (b) -(C m H 2m )-O-, where m is an integer of not less than 4; (c) -(CH 2 ) 3 -NR<SP>11</SP>-, where R<SP>11</SP> denotes H or C 1-6  alkyl; (d) where b is 1 or 2, c is 1, 2, 3 or 4, d is 0 or 1 and R<SP>111</SP> denotes H or C 1-20  alkyl; (e) or (f) -CH 2 CH 2 (CH 2 ) e -COO- (wherein e is an integer not greater than 20) are prepared by reacting an appropriate silicon or titanium compound with a difunctional organic compound having two functional groups of different reactivities and thereafter reacting the product with a titanium or silicon compound as appropriate. In Examples (1) diisopropoxy titanium diethylacetoacetate is reacted with 1,2-propanediol and the product further reacted with tetraisopropoxysilane; (2) triethoxysilane is reacted with 1,2-propylene glycol and the product further reacted with titanium tetraisopropoxide. Uses.-As crosslinking agents for silicone rubbers, as detergent resistant additives for polishes, as water-proofing and release agents and for surface treatment of particulate fillers and pigments, plastics, metals, glass and natural and synthetic stone. Films having improved hardness, adhesion and water-resistance are formed from dopes based on nitrocellulose, methanol, ethylene glycol monoethyl ether acetate, dibutyltin dilaurate and the above compounds. Products having improved bathlife are obtained by adding the above compounds to a paper release system based on a hydroxyl-ended dimethylpolysiloxane of viscosity 900 cs. at 20 C., ethylorthosilicate and dibutyltin diacetate. Improved silicon rubbers are also produced by incorporating the above compounds into a mixture of alpha omega dihydroxydimethylpolysiloxane of viscosity 3000 cs., surface treated calcium carbonate and dibutyltin dilaurate.
Patent GB-1109933-A (GB)
Title: Mechanical cyclic timing device
IPC: G05G21/00
Filed: 1965-08-12
Abstract: 1,109,933. Mechanical cyclic timing device. AVCO CORPORATION. 12 Aug., 1965 [31 Aug., 1964], No. 34563/65. Heading F2X. An escapement providing intermittent rotation of an arm 23 comprises a rotatable threaded shaft 11, a universally pivoted arm 13 engaged by the thread for movement along the shaft, a clutch 25, 28 actuated by the arm 13 at one end of its traverse to rotate the arm 23 through a single revolution, and a bar 40 to lift the arm 13 from engagement with the thread and permit it to be returned to the start of the thread for another traverse. The bar 40 is connected by a yoke 39 and pins 38 with the driven member of the clutch and lifts the arm against the resistance of a return spring 17 when the driven member has completed a revolution. A pin 26 on the driving member of the clutch co-operates with an arcuate groove 27 on the driven part. A spring-loaded brake shoe co-operates with the outer periphery of the latter which is profiled to provide a braking action at the end of each revolution. The maximum return travel of the arm 13 is limited by a fixed stop; an intermediate adjustable stop is also provided to allow the time interval between revolutions to be shortened. A variable speed drive from an input shaft 30 permits finer adjustments of the interval to be effected. The arm 23 may operate the gates of the cattle feeder of Specification 1,095,579.
Patent GB-906545-A (GB)
Title: Improvements in photographic etching resists for use in gravure
IPC: G03C5/305
Filed: 1958-10-29
Abstract: 906,545. Photographic etching resists for gravure printing plates. KODAK Ltd. Oct. 29, 1958 [Oct. 31, 1957], No. 34612/58. Class 98 (2). A film support bearing an unhardened gelatin layer and an adjacent, outermost unhardened gelatino-silver halide emulsion layer is exposed, tan-developed, rolled on to a wetted plate or cylinder, the film support is stripped off and the unhardened gelatin layer and unhardened portions of the emulsion layer are removed, to leave a resist image on the plate or cylinder. Solutions and times of use of such for the procedure, including a fixing operation after development, are fully described; and a specific material therefor comprises a cellulose acetate support having a layer of hydrolysed gelatin containing a Carey Lea antihalation material and glycerine as plasticizer and then an unhardened chlorobromide emulsion layer. A further specific material operable by dry stripping has a glue layer on the film support, a cellulose nitrate stripping layer and then the pair of unhardened layers, the stripping layer being removable in use by softening with alcohol. Copper plates or cylinders provided with the resists may be etched with ferric chloride.
Patent GB-1402477-A (GB)
Title: Unloaders for storage containers
IPC: B65G65/42
Filed: 1973-07-20
Abstract: 1402477 Silo bottom unloaders; endless conveyers AUSTIN HOY & CO Ltd 20 July 1973 34845/73 Headings B8A and B8E A silo 10 is discharged by the action of conveyer/cutter members 14 carried by an endless chain which runs in tracks 15, 15, formed inside a pivotable arm 12. Reference has been directed by the Comptroller to Specification 1,092,262. (For Figures see next page.)
Patent GB-353951-A (GB)
Title: Improvements in and connected with rotary pump machines
IPC: F04B1/113
Filed: 1930-04-22
Abstract: 353,951. Rotary pumps. EYSTON, G. E. T., 329, High Holborn, London. April 22, 1930, No. 34851. Addition to 338,546, [Class 8 (i), Air and gases, Compressing &c.]. Drawings to Specification. [Classes 8 (i) and 102 (i).] The fixed shaft about which, according to the Specification of the parent application, the piston rolls, is mounted for revolution and is used as the driving element. The ratio of the rolling circles of the piston and shaft is either less or greater than but not equal to two to one.
Patent GB-1529117-A (GB)
Title: Push type mechanical pencil
IPC: B43K21/00
Filed: 1977-08-19
Abstract: 1529117 Propelling pencil PENTEL KK 19 Aug 1977 [20 Aug 1976 8 Aug 1977] 34881/77 Heading B6P  Lead-advancing clutch sections 12, spare lead reservoir 8 and a connecting tube passage are all portions of a single plastics moulding, which is folded about hinge 22 before being clicked into shaped outer barrel 1. The clutch sections co-operate with a sliding ring 3 as they are reciprocated by button 14 against spring 10. At one limit of its travel the ring 3 contacts abutment 5 on the barrel 1, at the other abutment 6 on ferrule 2. Fins 29 on the moulding lock behind an internal ring 30 in the barrel 1, preventing removal of the moulding.
Patent GB-522103-A (GB)
Title: Improvements in means for the independent suspension of vehicle wheels
IPC: B60G3/28
Filed: 1938-12-01
Abstract: 522,103. Vehicle wheel suspensions EAGLE ENGINEERING CO., Ltd., and COLLIER, E. R. W. Dec. 1, 1938, No. 34974. [Class 108 (ii)] An independent wheel suspension applicable to trailer vehicles comprises a bracket 4 depending from the frame 3, connected to the corresponding bracket on the opposite side by a strut. A tubular arm 7 carries a sleeve 6 pivoted on the bracket 4, and at the other end a sleeve 8 having a projection 8a pivoted to a link 9 having alternative pivots for connection to a leaf spring 10. One side of the sleeve 8 carries the overhanging wheel axle 11 and a stop 8b coacts with a stop 13 on the frame to limit the wheel lift.
Patent GB-1078074-A (GB)
Title: Improved photographic films
Inventor: BUGEL THOMAS EARLE
IPC: G03C1/795
Filed: 1964-08-26
Abstract: 1,078,074. Photographic film. UNION CARBIDE CORPORATION. Aug. 26, 1964, No. 35051/64. Heading G2C. A dimensionally stable and curl-free photosensitive film comprises a film support of a poly (hydroxyether) having a reduced viscosity of from 0À3 to 1À2 measured as a 0.2 gm. sample in 100 ml. of T. H. F. at 25C. and a photo-sensitive coating adhered thereto either directly or through a subbing gelatine layer. The poly (hydroxyether) contains the recurring unit: - wherein E is the residue of a dihydric polynuclear phenol and R and R<SP>1</SP> are H or methyl. Many residues E are specified. The photo-sensitive coating may be a gelatino silver halide emulsion, a silver nitrate, ferric ammonium citrate and tartaric acid layer, a dichromate layer, a diazonium salt layer or a ferric platinum or palladium salt layer for the blue print and other processes.
Patent GB-213328-A (GB)
Title: Improvements in or relating to holders for taps and like tools
IPC: F16D43/202
Filed: 1922-12-23
Abstract: 213,328. Gledhill, J. Dec. 23, 1922. Attachments f o r screwing and tapping. -A holder for taps and like tools of the type in which radial driving keys are adapted to slip on overload, has means for discontinuing the drive when a required length of thread has been cut and means for removing the tool quickly from the work when it is being withdrawn. The holder 1, provided with a key 3 and a set screw 2<1> for engaging the tool, is driven by clutch teeth 1<a> from a sliding sleeve 4 pressed into engagement by a spring 14. An adjustable member 9, slidably keyed to the holder, carries pins 13 which partially separate the clutch teeth when it meets the work. The clutch teeth are bevelled on one side only so that they will slip in the driving direction but will engage in the reversed direction for withdrawing the tap. The sleeve 4 is driven by bevelled grooves 4<1> and radial keys 5 pressed outwards by a spring-loaded plunger 7, the spring load being adjustable by means of a nut 10. The end of the plunger is shaped to give a reduced end thrust on the keys when these are in the retracted position. On withdrawing the tool, the parts 1, 6 separate and a spring 17 is compressed so that when the tool leaves the work it will be lifted quickly by the spring.
Patent GB-903689-A (GB)
Title: Improvements in draught deflectors
IPC: B60J1/14
Filed: 1959-10-17
Abstract: 903,689. Vehicle windows. WARBURTON, E. Jan. 17, 1961 [Oct. 17, 1959], No. 35221/59. Class 20 (3). A draught deflector for a motor vehicle's quarter light 11 comprises a substantially triangular sheet 10 of transparent material which is fitted over the upper portion of the window opening and secured by adhesive to the window seating. The leading edge of the deflector extends downwards to the upper pivot of the window and its rear edge extends downwards to a point which allows access to a window fastener 13.
Patent GB-454341-A (GB)
Title: Improvements in or relating to receivers of electrical oscillations
Filed: 1935-02-26
Abstract: 454,341. Valve circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and BLIGH, N. R., STENNING, L. C., and STEWART, J., c/o General Electric Co., Ltd., Wembley, Middlesex. Feb. 26, 1935, No. 35253. Divided application. [Classes 40 (iii) and 40 (v)] Remote tuning of a wireless receiver is effected by a variable reactor constituted by a network including a thermionic valve which may simulate an inductance or capacity and is variable by changing the mutual conductance of the valve by varying its grid bias from the remote point. In Fig. 2, the anode of the valve V is connected to its cathode through a resistance R and condenser C in series, the common point 5 being connected to the grid. Condenser 15 and inductance L are a blocking condenser and choke respectively. The condenser C0 is the one to be tuned by a variable inductance and to this end the grid bias of V is varied by a potentiometer 9, 16 being a series choke of large inductance. The anode circuit may be transformer-coupled to the grid circuit at point 3 instead of condenser 15, Fig. 3 (not shown). With these arrangements the network behaves as a variable inductance across C0. In Fig. 4, the arrangement acts as a variable capacity by virtue of the addition of a further amplifier 20, which increases the variations in mutual conductance of V due to grid bias changes. The junction of R1 C1 is joined to the grid of 20 across which is connected a further combination R2 C2 with junction connected to the grid of V. The potential at point 26 lags 45‹ in phase behind that at point 3, and the voltage of anode 23 thus leads that of point 3 by 135‹; that of the grid 6 therefore leads 3 by 90‹ and the network behaves as a capacity variable by potentiometer 9. A mathematical exposition of the effect of varying or adding to the constants of the network is given. Specifications 360,891, 369,112, 378,256, and 420,687 are referred to.
Patent GB-1182778-A (GB)
Title: Voltage Regulators.
Inventor: NOLAN ROGER WILLIAM
IPC: H02J7/14
Filed: 1966-08-08
Abstract: 1,182,778. Automatic voltage control. JOSEPH LUCAS (INDUSTRIES) Ltd. July 5, 1967 [Aug.8, 1966], No.35379/66. Heading G3R. A voltage regulator for a generator 14 connected to charge the battery 13 of a road vehicle comprises transistors 17, 18 which control, in known manner, the current flowing through the generator field winding 15 in dependence upon output voltage variations as detected by a voltage divider constituted by a resistor 23 and a thermistor 22 which is bridged by a variable resistor. As shown, the variable resistor comprises resistors 27, 29, 31 associated with a switch 28, so that the temperature compensating action of the thermistor can be modified, by selecting a suitable combination of resistors, to give a desired charging characteristic for particular circumstances. The generator may be an alternator with a rectified output.
Patent GB-1043225-A (GB)
Title: Improvements in or relating to speed control systems for electric motors
Inventor: RINGROSE BRYAN EDWIN
IPC: H02P7/30
Filed: 1961-10-02
Abstract: 1,043,225. Automatic speed control. ENGLISH ELECTRIC CO. Ltd. Sept. 27, 1962 [Oct. 2, 1961], No. 35508/61. Heading G3R. [Also in Division H2] The armature 10 of a separately-excited D.C. motor is supplied through saturable reactor 12, the motor speed being maintained substantially in accordance with the setting of control member 18 despite load variations. A comparison device 16 controls the input signal to the reactor and responds to a reference signal and feedback signals one of which is derived from amplifier 19 and the other is dependent upon armature voltage, the first two signals being opposed by the third. The amplifier 19 is connected with comparison device 15 which responds differentially to an armature voltage signal and a speed-dependent signal from tachometer generator 14. A similar arrangement is used for controlling an induction motor. The saturable reactor 12 and amplifier 13 may be replaced by equivalent devices. In other arrangements, the feedback signal from amplifier 19 is applied to amplifier 13 or to a motor winding. The tachometer generator 14 may be associated with a potentiometer whose slider is ganged with a motor field regulator.
Patent GB-839573-A (GB)
Title: Quaternary ammonium compounds and preparation thereof
IPC: C07D295/037
Filed: 1956-11-21
Abstract: Detergent-sanitizer compositions comprise a quaternary ammonium compound of the formula <FORM:0839573/III/1> wherein X is an anion, R1 is C6-8 alkyl and the R groups are methyl or ethyl (same or different) or, together with the nitrogen, form a morpholino, thiamorpholino, pyrrolidinyl or piperidino group or these groups having a methyl or ethyl substituent (see Group IV (b)).  Aqueous solutions may contain octylphenoxypolyethenoxyethanol, soda ash, sodium metasilicate or sodium phosphate or polyphosphate.ALSO:The invention comprises quaternary ammonium compounds of formula <FORM:0839573/IV (b)/1> in which X is an anion, R is C6-8 alkyl, and the R groups are methyl or ethyl (same or different) or together with the nitrogen atom represent a morpholino, thiamorpholino, pyrrolidinyl or piperidino group or these groups having a methyl or ethyl substituent.  They are prepared by reacting at a temperature between 50 DEG  C. and the reflux temperature in an inert volatile solvent a compound <FORM:0839573/IV (b)/2> with a compound C12H23X, or a compound C12H23NRR with a compound <FORM:0839573/IV (b)/3> The halide form is the preferred form of the products but this may be converted to other salts by metathesis or the use of ion-exchange resins.  The C6-8 alkyl and the dodecenyl group may be in any of their possible isomeric forms.ALSO:A diaper rinse to prevent diaper rash consists of an aqueous solution of a quaternary ammonium compound of the formula <FORM:0839573/IV(c)/1> wherein X is an anion, R1 is C6-8 alkyl and the R groups are methyl or ethyl (same or different) or, together with the nitrogen, form a morpholino, thiamorpholino, pyrrolidinyl or piperidino group or these groups having a methyl or ethyl substituent (see Group IV (b)).ALSO:Disinfectant compositions comprise a quaternary ammonium compound of formula <FORM:0839573/VI/1> wherein X is an anion, R1 is C6-8 alkyl and the R groups are methyl or ethyl (same or different) or together with the nitrogen form a morpholino, thiamorpholino, pyrrolidinyl or piperidino group or these groups having a methyl or ethyl substituent.  (For preparation see Group IV (b),) Aqueous solutions may contain octylphenoxy-polyethoxyethanol, soda ash, sodium metasilicate or sodium phosphates or polyphosphates.
Patent GB-739149-A (GB)
Title: Improvements in or relating to sighting devices
IPC: G02B23/14
Filed: 1953-12-24
Abstract: 739,149. Sighting devices. CONTRAVES AKT.-GES. Dec. 24, 1953 [Dec. 24, 1952; Dec. 21, 1953], No. 35891/53. Class 97 (1). [Also in Group XL (a)] In a sighting device in which the object sighted is viewed by reflection in a plane mirror through which light from a mask is projected to allow the object or the mark to be viewed in superposition, the mirror is formed by an interference layer reflecting light of all wavelengths except those in a region above 600 millimicrons, and transmitting in that region. As shown, the object O is viewed by reflection at a prism 4 and interference layer 5 in superposition with the image m<SP>1</SP> 1 , m<SP>1</SP> 2  of a mark m formed from light pass- . 281 ing through a lens 9. For daylight use the mark is illuminated by daylight but for use at night a source operated by an electric battery may be used. This source ernits light in the red region above 600 mÁ which passes through the interference layer 5 while the latter reflects light from the object which, at night, is stated to be deficient in the said red region so that no visible light from the object is lost due to the mirror 5. An alternative source comprises a layer 16 of zinc sulphide and manganese actuated to fluorescence by an admixture of radioactive material. Alternatively the radioactive material may be formed as a layer 18 on a plate 17, the member 15 bearing the sulphide layer 16 being slidable to bring the latter into contact with the layer 18 when illumination is required and may be withdrawn to avoid exhaustion of the material of the layer 16 when no illumination is required.