baber/WOPTO huggingface dataset:
Patent GB-947297-A (GB)
Title: Electric cable with metal sheath comprising an anti-corrosion device
IPC: H01B13/14
Filed: 1962-07-18
Abstract: 947,297. Cable coverings. COMPAGNIE GENERALE D'ELECTRICITE. July 18, 1962 [July 19, 1961], No. 27592/62. Heading H1A. In an electric cable having a metallic sheath covered in a layer of corrosion inhibiting material a further covering layer is provided of self-sealing material adhering to both the inhibiting layer and an external protective envelope. The intermediate layer consists of a mixture of polyisobutylene, polythene and a plasticizer. For lead sheathed cables the inhibiting covering may be a layer of tar containing traces of phenol; and for aluminium sheathing a formal resin primer or polyvinyl acetal of zinc chromate and phosphoric acid. The external envelope of the treated cable may be of high density polythene or P.V.C.
Patent GB-603189-A (GB)
Title: Manufacture of acyloxy-carboxylic acids
IPC: C07C69/675
Filed: 1945-10-22
Abstract: Alpha-acyloxy-aliphatic carboxylic acids are prepared by heating one molecular proportion of an alpha-hydroxy aliphatic monocarboxylic acid ester of a monohydric alcohol with more than two molecular proportions of an aliphatic monocarboxylic acid while removing water as it is formed and isolating the resulting acyloxy mono-carboxylic acid.  Preferably, an esterification-catalyst is present.  The water formed may be removed by simple distillation or by means of a liquid water-entraining agent, which is, preferably, one that is immiscible with water which may be separated from the water in the condensate and recycled.  In addition to the acyloxy carboxylic acid there are formed the ester of the acylating acid and to some extent the ester of the acyloxy carboxylic acid.  By using a hydroxy carboxylic acid ester of an alcohol which forms with the acylating acid an ester of lower boiling point than the acylating acid, the ester of the acylating acid formed in the reaction may be distilled off as it is formed.  In examples: (1) a mixture of methyl lactate and glacial acetic acid is added slowly to boiling glacial acetic acid in presence of concentrated sulphuric acid, methyl acetate and water being distilled off as formed and the residual mixture is then distilled to recover alpha-acetoxy propionic acid; (2)-(4) methyl lactate is slowly added to a refluxing mixture of glacial acetic acid, butyric acid or formic acid and benzene in presence of concentrated sulphuric acid and the distilling vapours condensed and the benzene continuously returned to the mixture which is finally distilled for recovery of the acyloxy acid; (5) ethyl glycollate is reacted with acetic acid as in (2) to yield acetoxy-acetic acid. According to the Provisional Specification any hydroxy carboxylic acid ester may be so treated.
Patent GB-813501-A (GB)
Title: Improvements in or relating to apparatus for use by disabled persons
IPC: A61F5/01
Filed: 1954-09-25
Abstract: 813,501. Limb supports. CRESSWELL, W. L. Oct. 24, 1955 [Sept. 25, 1954], No. 27753/54. Class 81 (2). An appliance for assisting in straightening a leg or arm when muscular power has been lost comprises two parts 1, 3 for attachment to the upper and lower parts of the limb and resilient means between the two, which may be an elastic cord 25, passing over a pulley guide 17. This has sufficient power to store, during a bending movement, an amount of energy at least equal to the work required to be performed in straightening the limb, that is, in the case of a leg, raising the body. Automatic means for holding the limb bent until manually released, may comprise two pivoted levers 21, 22 connected to the two parts of the appliance and so arranged that the system so formed passes beyond dead centre when the limb is fully bent, so that the lower lever 21 bears against a stop 24A, see Fig. 3 (not shown), and the limb can only be straightened by manually forcing the levers back past this position.
Patent GB-261367-A (GB)
Title: Improvements in cultivator attachment for tractors and the like
IPC: A01B49/04
Filed: 1926-11-05
Abstract: 261,367. Southern Steel Products Co., (Assignees of Williams, J. L.). Nov. 11, 1925, [Convention date]. Void [Published under Sect. 91 of the Acts]. Controlling-apparatus, arrangements of hand and transmission gear in conjunction with. - A cultivating and planting attachment for tractors, &c. comprises a substantially rigid framework fixed to the rear end of the tractor with a seat 19 projecting rearwardly from the framework and the tractor steering spindle 46, the clutch lever 47, and the gear-shifting lever 48 projecting backwards to near the seat 19.
Patent GB-861171-A (GB)
Title: Improvements relating to instruments for the electrical stunning of animals
IPC: A22B3/06
Filed: 1959-08-14
Abstract: 861,171. Electric stunning devices for animals. MORSE, R. E., and DIPASQUALE, F. A. Aug. 14, 1959 [April 24, 1959], No. 27885/59. Class 5(1). An instrument for electrically stunning animals comprises an elongated tubular member 10 having a straight handle portion 17 at one end and a returned portion 16 at the other, carrying two spiked electrodes 13. The electrodes are supplied with current via leads 11 passing within the member 10, the supply being controlled by a switch 31 on the handle. The member 10 is made of a non-conducting material such as a thermo-plastic synthetic resin, and may be provided with additional insulation in the regions of the electrodes and handle. The electrodes may either be rigidly fixed to the members 10 as shown in Fig. 2, or one may be resiliently mounted in the end of the member, as shown in Fig. 6. On the latter case, depression of the electrode 26 against the action of the spring 27 completes the circuit to the electrode. The instruments are referred to as being suitable for carrying out the method of electrocuting animals disclosed in Specification 861,170
Patent GB-1166073-A (GB)
Title: Method of Producing Doped Zones in Semiconductor Bodies
IPC: H01L21/00
Filed: 1966-09-21
Abstract: 1,166,073. Semi-conductor devices. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 21 Sept., 1966 [16 Oct., 1965], No. 27907/69. Divided out of 1,166,072. Heading H1K. A method of producing a doped zone in a semi-conductor body 1 comprises coating the body 1 with a first masking layer 2, e.g. of SiO 2 , forming thereon a further masking layer 6, which may also be of SiO 2  but which has an oxidizing substance such as PbO 2 , Sb 2 O 3  or As 2 O 5  incorporated therein, forming a window 3 in the layers 2 and 6 and exposing the coated semi-conductor body to the action of an atmosphere of the desired dopant, e.g. Ga or In. The  semi-conductor body may be of silicon or germanium. The oxidizing constituent of the layer 6 oxidizes the gellium or indium incident therein to the respective oxide, so that although elemental gallium or indium can penetrate SiO 2 , a doped zone 5 is formed only below the window 3. The layer 2 may be produced by the hydrolysis or pyrolysis of SiCl 4  and the layer 6 (containing PbO 2 ) similarly from a mixture of SiCl 4  and PbCl 4 .
Patent GB-158707-A (GB)
Title: Improvements in wireless telegraph receiving systems
IPC: H01Q21/08
Filed: 1919-11-11
Abstract: 158,707. Picken, W. J., and Robb, J. G. Nov. 11, 1919. Coupling aerial and detector circuits; undesired signals, eliminating or limiting.-Where reception takes place from several aerials at a distance connected by land lines to a common receiver, received oscillations are amplified as at c, d before reaching the land lines e, f, the effects due to the receptive properties of the land lines themselves being now negligible compared with the amplified received oscillations, which are combined and detected at the central receiving station g.
Patent GB-1325649-A (GB)
Title: Hydrodynamic devices with slipping mechanical clutch
Inventor: ANNIS R E
IPC: F16H45/00
Filed: 1972-06-15
Abstract: 1325649 Fluid actuated clutches GENERAL MOTORS CORP 15 June 1972 [30 July 1971] 28080/72 Headings F2C and F2L A hydrodynamic torque converter comprising impeller 22, turbine 24 and reactor 30 has a slip clutch 50 which interconnects turbine and impeller to control the converter slip therebetween. A gear pump 43, driven from the impeller, supplies pressure through a transmission control to a valve 98 via a pipe 96 which is also connected to the right hand side of valve 98 (to bias it leftwards against spring 126) via a constriction 112 and to a solenoid valve 100. With this solenoid valve 100 closed the valve spool 124 of valve 98 is held to the left and permits fluid to be supplied through passage 134, a passage 140 of the output shaft 28, and a restrictor valve 152 to a chamber 88 on the left (as viewed) side of a clutch plate 60 to pass around the clutch to the converter, so that the clutch 50 is maintained disengaged. On opening the solenoid valve 100 the pressure to the right side of valve 96 is vented, the spool 124 moves to the right and fluid is supplied from passage 196 to passage 136 and then to the converter so that due to pressure differences, the clutch plate 60 is moved to the left to engage clutch 50, the fluid being transmitted to chamber 88 via a control valve 156 which regulates the pressure difference between the converter and chamber 88 to regulate the clutch slip. This valve 156 comprises an orifice 158 opposite a flat part of a turbine shell portion 66 which flexes under the influence of a force (to the right) on turbine 24 which is dependent on the degree of slip of the converter so that an increase of slip tends to close the valve 156 to increase the torque transmission of the clutch 50 (and vice-versa). The member 66 is held spaced from the orifice by bent tongues of the member in which the orifice is formed (Fig. 3, not shown) and an L shaped member connected to the plate 60 and protruding through holes in the turbine shell portion 66 and the said member with the orifice interconnects all three for rotattion (Figs. 2 and 3, not shown). A "high" clutch switch and a governor switch (116 and 118) ensure that the slip clutch 50 only operates when the vehicle is in high gear, and the presence of a constant limited slip between impeller and turbine absorbs vibrations transmitted by the engine, unlike conventional lock-up clutches. The restrictor valve 152 restricts the fluid flow more when the clutch is in its engaged position, than when it is disengaged.
Patent GB-242092-A (GB)
Title: Improvements in methods of separating phenols from crude oils
IPC: C07C37/00
Filed: 1924-11-24
Abstract: Phenols are extracted from crude oils by treating the oils with caustic alkali (usually caustic soda) solution of over 20 per cent strength so as to form an alkali phenate solution which is used to dissolve further portions of the phenols.  The resulting solution is separated from the residual oil and diluted to reduce the concentration of the equivalent content of caustic alkali to below 20 per cent, whereupon the excess phenols separate out.  The p partly-exhausted solution is re-concentrated and again used for treating the crude oils.  If caustic soda solutions of over 30 per cent strength are used, some of the neutral oils pass into solution, but these may be removed by steam distillation before diluting the solution to precipitate the phenols.
Patent GB-469064-A (GB)
Title: A preparation for the treatment of wood and other building material and the like against the action of white ants and other insects and against weathering
IPC: B27K3/46
Filed: 1936-10-16
Abstract: An insect - repelling emulsion for treating timber and other building materials is made by mixing hot tar, preferably a wood tar such as Stockholm tar, a saponaceous substance such as soft soap, and aqueous extracts, preferably decoctions, of Irish moss (chondrus crispus) and Hottentot fig leaves (mesembrianthemum eduli).  The preparation may be diluted with paraffin or turpentine before application by spraying.
Patent GB-375165-A (GB)
Title: Improvements in or relating to short wave aerial systems
IPC: H01Q11/08
Filed: 1931-10-12
Abstract: 375,165. Directive signalling; aerials. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Oct. 12, 1931, No. 28334. Convention date, Oct. 13, 1930. [Class 40 (v).] A directive aerial, of the Beverage type, for the trans. mission or reception of circularly or elliptically polarized waves, consists of twc wires A, L twisted helically around an imaginary cylinder. Auxiliary radiators Q may be attached externally, as shown in Fig. 3, or internally. The aerial system is energized at G, and is terminated by a resistance R. Series or shunt impedances may be inserted to ensure a suitable phase-relation of the energy along the length of the aerial.
Patent GB-665074-A (GB)
Title: Improvements in and relating to balanced modulators
IPC: H03C1/54
Filed: 1949-11-04
Abstract: 665,074. Modulating systems; frequency modulation. BRITISH TELECOMMUNICATIONS RESEARCH, Ltd., and HOLLOWAY, D. G. Oct. 18, 1950 [Nov. 4, 1949], No. 28344/49. Class 40 (v). A balanced modulator comprises a single - valve 10 with impedances 11, 12 in its cathode and anode leads, the carrier voltage 13 being applied to its inner grid, the modulating voltage to its outer grid, and the intermediate grid being connected to H.T.+ so that it acts as a secondary collector electrode. The inner grid controls the total valve current, and the outer grid controls the distribution of that current between the collector electrodes. A resistor 15 is connected in series with a blocking condenser 16 between the anode and cathode. When. there is no modulating voltage applied to the outer grid, the adjustment is such that the carrier voltage at the anode is neutralized by the oppositely-phased carrier voltage at the cathode, so that no carrier appears at the output terminals 17; but application of an alternating modulating voltage produces side-bands at the output terminals. Condensers 16 may be provided at both sides of the resistor 15, and output taken from a tapping on this resistor, Fig. 2 (not shown). In a further modification, Fig. 3 (not shown), the anode resistor 12 is replaced by a tuned circuit, the capacity 16 directly connects the anode and cathode, and an auxiliary triode valve has its anode and grid connected respectively to the anode and inner grid of the valve 10 and its cathode earthed through a resistor. The auxiliary valve is adjusted so that its anode current is equal to the current taken by the intermediate grid of the valve 10 when there is no modulation. The circuit of Fig. 1 may be duplicated, the carrier being applied in phase agreement to the inner grids, the modulation in phase opposition to the outer grids, and the output taken in push-pull from the anodes. In a frequency-shift telegraph system, the modulating voltage applied to the outer control grid may be derived from a lowfrequency oscillator whose frequency is alternately given a " mark " value and a " space " value by the signalling key. This combines with the radio frequency supplied to the inner grid to produce upper and lower side frequencies, either of which is selected for transmission.
Patent GB-852961-A (GB)
Title: An anamorphotic and focusing attachment for an objective
IPC: G02B13/08
Filed: 1957-09-09
Abstract: 852,961. Optical systems. ISCO OPTISCHE WERKE G.m.b.H. Sept. 9, 1957 [Sept. 28, 1956], No. 28404/57. Addition to 820,972. Class 97(1) Negative spherical refractive power is provided at or near the rear of the anamorphotic and focusing attachment of the parent Specification to collimate a fixed focus camera objective. A separate negative spherical lens may be mounted in an adaptor by which the attachment is secured to the objective or, as shown, surface 4a of the anamorphotic ancillary system 3, 4 may be made spherically or toroidally concave.
Patent GB-732779-A (GB)
Title: Improvements in method of treating cotton
IPC: C08B11/155
Filed: 1951-12-04
Abstract: Cotton products are rendered resistant to attack by mildew-causing organisms by treatment with acrylonitrile in the form of vapour or of a homogeneous liquid mixture with water in the presence of an aqueous solution of an alkali metal hydroxide containing not more than 10 per cent by weight of the alkali metal hydroxide, and at a temperature near the boiling point of acrylonitrile, for such time as to combine cyano-ethyl groups with the cotton in the proportion 0.1-0.6 and particularly 0.2-0.4 group per anhydro-glucose unit.  In an example cotton fabric is steeped in a 2 per cent aqueous caustic soda solution for five minutes at room temperature, centrifuged to 100 per cent liquid retention, and passed through a chamber containing acrylonitrile vapour at the boiling point of acrylonitrile at a rate to give a 2.5 minute exposure period.  The chamber is provided with a reflux condenser and a baffle to shield the fabric from the returning acrylonitrile condensate.  The treated fabric is washed with hot water and dried.  In two further examples cotton fabrics, after treatment as above with caustic soda, are immersed in a saturated solution of water in liquid acrylonitrile at about 74 DEG  C. for one and five minutes respectively.  Specification 640,411 and U.S.A. Specification 2,375,847 are referred to.
Patent GB-995337-A (GB)
Title: Apparatus for projecting legend
IPC: G09F9/40
Filed: 1963-07-18
Abstract: 995, 337. Optical-projection apparatus. D. G. GUMPERTZ. July 18, 1963 [July 19, 1962], No. 28435/63. Heading G2J. A projection unit as described in Specification 862,594 has a transparent plate 32 carrying lenses 34 (are for each projection unit) which are modified in that they are rectangular in shape and therefore more compact. The lenses may be separated by a narrow space or may be contiguous. The plate 32 may have a mask 36 having a number or a letter at each lens and a plate 38 may carry projection lenses 40 to project the selected number or letter on to a screen 12. Plates 32 and 38 are spherically curved about a centre located at the centre of the screen 12.
Patent GB-425701-A (GB)
Title: Improvements in or connected with power operated plant for use at storage stations
IPC: B65G63/06
Filed: 1933-10-14
Abstract: 425,701. Loading storage chambers; hoists. LEES & CO., Ltd., H., and BILES, A. W., 81, Mitchell Street, Glasgow. Oct. 14, 1933, No. 28442. [Classes 78 (iii) and 78 (iv)] Plant, for the loading and distribution of coal and like pulverulent material, in which a tipping wagon-hoist is associated with a distributing-member feeding several storage bunkers, is arranged so that gravity action on the hoist assists the movement of the distributer, both hoist and distributer preferably being driven from a single driving- member. In some cases the distributer may travel on an inclined track, so that gravity action on it as it runs in the downward direction may assist the operation of the hoist. A side-tipping wagon hoist C of the kind described in Specification 382,033 is raised by one or a pair of ropes 2 and delivers to the distributing truck D which travels over an inclined track and can be arranged to feed any one of a range of bunkers E, F at will. The actuating rope or pair of ropes 4 for the truck passes to a second drum fixed on the axle of the winding drum for the ropes 2, so that the descent of the empty wagon assists in raising the truck D up the incline, while the descent of the truck assists in the hoisting of the loaded wagon. Specification 320,429, [Class 78 (iii)], is referred to.
Patent GB-1536354-A (GB)
Title: Energy absorber
IPC: B60R22/28
Filed: 1976-07-08
Abstract: 1536354 Energy absorbing belt BRITAX Ltd 1 June 1977 [8 July 1976] 28444/76 Heading A3V [Also in Division F2] In an energy absorber, particularly for use with a safety harness, a configured member 5 has apertures 4 with a strap 2 threaded therein so that the member is permanently deformable when a predetermined strap tension is exceeded.
Patent GB-733368-A (GB)
Title: Improvements in or relating to vices
IPC: B25B1/24
Filed: 1952-11-12
Abstract: 733,368. Vices. STAPLES, G. F., and MITCHELL, R. Nov. 9, 1953 [Nov. 12, 1952], No. 28471/52. Class 61. In a vice one or both jaws have a vertically serrated face to which is adjustably attached a pair of holders 17 which are correspondingly serrated on their rear faces and which stand above the top of the vice jaw. The holders are each held in adjusted position on the jaw by a bolt 18 passing therethrough to engage with a nut 19 located in a T-slot 20 disposed transversely of the jaw. Each holder 17 has a square hole in which a locator 21 is a close sliding fit, the projecting front end of each locator being machined to grip a work component 25, the projecting rear end of the locator being spherical to engage in a radiused groove 24 in a rocker 23 rotatably mounted on the jaw. The rocker is locked in position with its central line square to the axis of the vice screw by inserting a pin through bushed holes 26, 27 in the rocker and vice jaw, respectively. Each locator is slid rearwardly until its spherical end seats in the groove 24 and is locked in position by a grub-screw 21a. The front ends of the locators are then machined to the correct angle for gripping the component. Transverse slots to receive the sides of a turbine blade may be provided in the locators. Plain plates having serrations to fit the serrations on the vice jaws are provided. The vice shown comprises a fixed jaw 13 and movable jaw 14 carrying a nut 15 engaging with the lead-screw 12 which may be turned by the handle 16. A supplementary handle 29 is carried by the upwardly-inclined end of the split shaft 30, 31 which has driving connection through bevel gears 34, 35 with the screw 12, a dog type clutch 36 being provided which slips when a predetermined load is exceeded. A vice having two movable jaws operated by a right and left hand thread is also described.
Patent GB-493171-A (GB)
Title: Improvements in ice-cooled and like refrigerators
IPC: F25D3/04
Filed: 1937-10-20
Abstract: 493,171. Refrigerators. SIMONS, 1. J. Oct. 20, 1937, No. 28560. [Class 29] A hinged inner door C is provided for the ice compartment A of a refrigerator and is adapted when open for access to that compartment to close the storage compartment B, which may be underneath or at the side of the ice compartment. The usual main outer door closes both compartments. Reference has been directed by the Comptroller to U.S.A. Specification 1,978,708.
Patent GB-1006822-A (GB)
Title: 2 way repeaters
Inventor: TILLY JOHN FREDERICK
IPC: H04B3/38
Filed: 1964-07-10
Abstract: 1,006,822. Two-way repeaters. STANDARD TELEPHONES & CABLES Ltd. July 10, 1964, No. 28643/64. Heading H4R. In a two-way repeater, Fig. 3, in which signals in the opposite directions occupy different portions of the frequency band and a common amplifier is provided for the two directions, the signals being fed in and out of the amplifier via high pass and low pass filters to separate the two directions of transmission, the common amplifier path is provided with equalization to compensate for losses over the low frequency band only, the equalization of the high frequency band being done in an amplifier 13 in the section of the transmission channel restricted to the high frequency signal. The additional gain required to compensate the high frequency channel, the losses in which will be greater than in the low frequency channel, are more easily provided in a separate amplifier and any intermodulation which this additional amplification might introduce and which would tend to be of lower frequency is prevented from entering the transmission lines by the two high pass filters 7 and 14.