baber/WOPTO huggingface dataset:
Patent GB-589442-A (GB)
Title: Improvements in electromagnetic measuring apparatus
IPC: G01D5/20
Filed: 1944-10-30
Abstract: 589,442. Magnetic tests and measurements. PANDEL, M. Oct. 30, 1944, No. 21162. Convention date, Oct. 29, 1943. [Class 37] An apparatus for measuring variations in the thickness of materials, comprises a rod 28 which is brought into contact with the surface of a body under test. Irregularities of this surface produce a displacement of rod 28 which, by means of a member 27, three rods 26, and a cylinder 25, actuates a movable part 24 of the core of an energized transformer. Displacement of the movable part 24 produces variations of reluctance in the magnetic circuit of the transformer and, consequently, produces a deflection of a galvanometer, connected across the secondary winding 23 of the transformer, proportional to, the variations of the dimensions of the specimen under test.
Patent GB-1092645-A (GB)
Title: Process for the preparation of sul phonic acids of aromatic polymers
Inventor: ARCUS CHARLES LAURENCE
IPC: C08F8/34
Filed: 1965-05-19
Abstract: Sulphonic acids of aromatic polymers are prepared by mixing together a solution of sulphur trioxide in sulpholane (tetrahydrothiophen-1,1-dioxide) and a solution of an aromatic polymer, e.g. polystyrene, in carbon tetrachloride.  The above two solutions may be added to additional carbon tetrachloride or to a mixture of carbon tetrachloride with sulpholane. Water may be added to the mixed solutions so as to separate them into two layers, the carbon tetrachloride layer being run off, the aqueous layer extracted with benzene and then freed from sulphonic acid by passage down a column of ion exchange resin of the quaternary ammonium type in hydroxyl form and the polystyrene sulphonic acid may be recovered from the aqueous solution by evaporation in a rotary film evaporator. Alternatively, after addition of water and separation of the mixed solutions into two layers, the aqueous layer may be separated, dialysed against distilled water and freezedried to yield the polystyrene sulphonic acid.
Patent GB-243469-A (GB)
Title: Improvements in nut locks
IPC: F16B39/32
Filed: 1924-09-09
Abstract: 243,469. Cole, E. Z. Sept. 9, 1924. Locking nuts.-A nut 1 provided with ratchet teeth on a hub 2 is locked to a bolt 4 by a split spring washer 11 with an internal lug engaging a spline groove 5 in the bolt. The washer is kept in position by a cap 8 having tongues 9 which engage diametrically opposed ratchet grooves in the hub 2 of the nut. In a modification the cap 8 has diametrically opposed slots and is secured to the hub of the nut by a U-shaped yoke, the resilient arms of which occupy the said slots replacing the tongues 9. Further modifications of the securing-means for the cap 8 include projections on the hub 2 which engage in bayonet grooves in the cap, and projections on the hub of the nut. Specification 237,649 is referred. to.
Patent GB-799852-A (GB)
Title: Improvements in or relating to window control mechanism for motor vehicles
IPC: E05F11/38
Filed: 1956-07-11
Abstract: 799,852. Vehicle Window operating: apparatus. FORD MOTOR CO., Ltd. July 11, 1956 [Aug. 11, 1955], No. 21432/56. Class 20(3) Mechanism for raising, and lowering, and supporting, a motor vehicle window 11 in a predetermined compound path having both vertical and horizontal components comprises front and rear curved guideways 19, 21 which are mounted on the vehicle body and engaged respectively by rollers 17, 18 on the bottom rail 13 of a window frame 12, a regulator comprising a pinion 22 driven by a handle, not shown, and meshing with an idler gear 23 mounted upon a plate 24 and carrying a driving pinion 25 geared to a .regulator quadrant 27 which has an arm 28 with a roller 29 at its upper end slidingly received in a slot 31 in the rail 13. A chanhel shaped metal guideway 36 is mounted on the vehicle body to slidingly receive and support the forward part of the window 11 throughout its travel, additional support against lateral displacement of the window being provided by means of articulated, links 41, 42 which are of uniform thickness throughout and are slidingly areceived between the side walls 37 and 38 of the guideway 36. One end of the linkage 41, 42 is pivoted at 43 to the vehicle body, the other end being bifurcated to receive a reduced portion, 49 of a flange 14 depending from the rail 13.
Patent GB-1002274-A (GB)
Title: Improvements in or relating to plug-type cocks
IPC: F16K27/06
Filed: 1964-05-25
Abstract: 1,002,274. Valves. CARL - ZEISS - STIFTUNG, [trading as JENAER GLASWERK SCHOTT & GEN]. May 25, 1964 [May 29, 1963], No. 21440/64. Heading F2V. A releasable securing device for a plug cock 1 comprises externally screw-threaded arcuate members 5, 6 having internal recesses 7, 8 to engage collars 3, 4 on the cock and its housing, and an internally screw-threaded sleeve 9 which is screwed on to the arcuate members to secure the cock in its housing. Relative rotation between the arcuate members and the housing and between the members and the sleeve is prevented by projections 11 and pins 10, respectively. The cock and housing are made from pressed glass parts and a hand wheel 12 has a cover 13 carrying an indication of the throughflow direction.
Patent GB-749105-A (GB)
Title: Roller conveyor for excavating wheel
IPC: E02F3/24
Filed: 1954-07-22
Abstract: 749,105. Excavating. UNITED ELECTRIC COAL COS. Julv 22. 1954 [Nov. 6. 19531. No. 21467/54. Class 68(1) Excavating apparatus comprises a rotatable digging wheel having a pluraltiy of excavating buckets at its periphery discharging downwardly from their upper positions on to a series of rollers which extend into the interior of the wheel and convey the material laterally outwardly therefrom. The digging wheel is journalled in a ladder 10 and is supported by a hoist line 20 from a beam 24; the beam and ladder. being pivoted to a fixed support 14 (see Fig. 1, not shown). The wheel, Figs. 2 and 3, comprises a shell 30, 34, a hub 36, toothed buckets 32 and a reinforcing plate 54 which may, if desired, be provided with gear teeth; the shell portions being welded together. Powered rollers 56, 58, 60 are used to convey the earth from the buckets to a conveyer belt 28 supported by the ladder. The rollers are disposed in a horizontal plane or inclined towards the belt and a scraper 86 is provided as shown. The rollers are driven from a shaft 72 through a clutch 78 and a chain and sprocket arrangement 80 or are independently driven. Earth is prevented from falling from the buckets as they move upwardly by a sheet metal shield 90 which is secured to the ladder and provided with an inclined guide plate 91. A shield similar to the plate 91 may also be provided to protect the bearings and the gearing 80 from earth accumulations. In a modification (Figs. 5 and 6, not shown), a small roller 100 is disposed in the V-shaped crevice between the plate 34 and the roller 56. In a second modification, Fig. n, the plate 34 is replaced by a plate having a truncated conical portion 114 and the roller 56 is replaced by either a pair of tapered rollers 156, 158, having a rectilinear or curved outline or a single roller as shown in Fig. 12 (not shown). In a modification of the device described with reference to Fig. 11 the tapered roller or rollers are replaced by slope sheets 128, 130, (see Figs. 7 and 8, not shown) which may be interconnected or formed integral with one another. At least one roller may be driven by an electric motor and gear reduction mechanism 183, Fig. 14, and gearing 186, 188; bearings and sealing means being provided together with air holes in the plate 180, as necessary.
Patent GB-221828-A (GB)
Title: Improved process of and apparatus for atomizing
IPC: B05B7/20
Filed: 1924-09-12
Abstract: 221,828. Schori, F., (Assignee of Gysin, A. Stolz-). Sept. 13, 1923, [Convention date]. Blowpipe burners.-Metallic powder drawn by suction from a receptacle 15 and atomized by a nozzle 4<1> is fused, as it emerges from the device, by passing through a burner 9 supplied with a combustible gas through a channel 8, 8<1>.
Patent GB-689403-A (GB)
Title: Improvements relating to resistance welding heads
IPC: B23K11/30
Filed: 1950-09-01
Abstract: 689,403. Welding by pressure. ENGLISH ELECTRIC CO., Ltd. Aug. 31, 1951 [Sept. 1, 1950], No. 21619/50. Class 83 (iv). In a resistance welding machine of the kind having a removable welding electrode mounted in a holder and supplied with cooling fluid, valve means are provided within the holder which operate automatically to seal the holder against escape of cooling fluid when the electrode is removed therefrom. A valve 4 is loaded by a spring 5 so that, when the electrode 2 is removed it moves outwards against a stop 10 to seal cooling water inlet and outlet ports 6, 9. The electrode 2 is taper fitted into the holder 1. In a modification the valve is biased by pressure of the fluid itself, for example by feeding it to the end surface of the valve. The cooling may be gas.
Patent GB-939499-A (GB)
Title: Improvements in change-speed gearing
IPC: F16D11/10
Filed: 1961-06-15
Abstract: 939,499. Positive clutches; securing together rotary parts; toothed gearing. HUMBER Ltd., and H. DICKINSON. June 15, 1962 [June 15, 1961], No. 21711/61. Classes 80 (1) and 80 (2). In a change-speed gear having a rotatable gear or dog clutch member 20 slidable along a second rotatable member 15 to engage a mating gear or clutch part 24, the two members being held for limited relative rotary movement, a radially fulcrumed axially extending latch lever 30 on one member is engageable at a position spaced from the fulcrum 31, due to relative rotation of the members, with a catch surface 27 on the other member oblique or transverse to the sliding movement, to resist relative disengaging movement of the members. A dumbell-shaped latch lever 30 is pivoted on the periphery of a splined clutch member 15, the other splined clutch member 20 having an axially extending groove 26 of width equal to the lever 30. On engagement of the clutch member 20 with mating clutch members 14 or 24 torque takes up play in the splines to rock the latch lever such that one end 35 engages sloping abutment surfaces 27 on the member 20 to resist disengagement of the clutch. The member 20 may be a sliding gear.
Patent GB-674596-A (GB)
Title: Improvements in or relating to sound insulating flooring
IPC: E04F15/20
Filed: 1950-09-04
Abstract: 674,596. Sound insulating floors. BACHMANN, A. Sept. 4, 1950 [March 28, 1950], No. 21766/50. Class 20(iv). A sound proof floor has an uppermost layer 1 of parquet blocks bedded in a concrete layer 2 which is spread over a layer of juxtaposed insulating slabs 3, each of which may be made of a mixture of cement, alum, lime, cellulosic glue, vegetable oil,' clay, brick dust, fibrous material and potash, the slabs resting on a resilient layer 4 of glass fibre, goatskin or plush supported on he floor foundation 5. Instead of forming the floor in situ it may also be made by laying preformed slabs, each consisting of layers 1, 2 and 3, upon the resilient layer 4 which extends unbroken over the floor area.
Patent GB-1128070-A (GB)
Title: Improvements in or relating to marine propellers
Inventor: SHIRET EDMOND STANLEY
IPC: F16D1/08
Filed: 1966-05-17
Abstract: 1,128,070. Securing propeller hubs on shafts. STONE MANGANESE MARINE Ltd. 4 May, 1967 [17 May, 1966], No. .21790/66. Heading F2U. A marine propeller hub 1 is secured on a tapered shaft 3 having at least one section radially offset from the rest of the shaft, the hub having a correspondingly shaped tapered bore so that the hub and shaft can only be assembled in one relative angular position. As shown the shaft section 22 has its axis 24 offset from the axis 6 of the shaft, the section being connected to the joining sections by tapered transition zones 25, 26, and the propeller hub being formed with lightening chambers 4a, 4b at these zones. Shaft sections may be offset on opposite sides of the axis 6 to balance the assembly, alternatively the balance of the propeller may be adjusted, e.g. by the form of the lightening chamber or chambers to compensate for the offset. The hub is driven on to the taper by a nut on a screwed part of the shaft (not shown) so as to produce a frictional grip capable of transmitting at least the full nominal maximum torque, and preferably 50% more.
Patent GB-776431-A (GB)
Title: Improvements in or relating to hydraulic power lift systems for tractors
Inventor: CHAMBERS JOHN MALET
IPC: A01B63/10
Filed: 1952-09-01
Abstract: 776,431. Tractor power-lift mechanisms. MASSEY - HARRIS - FERGUSON (SALES), Ltd. Sept. 3, 1953 [Sept. 1, 1952], No. 21888 /52. Class 79(1). A tractor having a hydraulic power lift system, including a main actuator which raises and lowers a hitch linkage and which is fed by a hydraulic pump 3 which draws oil from a sump, is provided with a control assembly for an auxiliary actuator comprising conduit means 13, 13A for connecting the pump to the auxiliary actuator and a spring-loaded relief valve 20 which co-operates with a control lever 9 for operating the main actuator. As shown the main actuator is controlled as set out in Specification 470,069. The lever 9 is provided with a cam 24 which co-operates with a follower 23 mounted on a pivoted lever 22 connected to a spring urged rod 21 which closes valve 20. A conduit 16 leads to one auxiliary actuator and a conduit 17 leads to a further auxiliary actuator and a selector valve 15 is provided and is operated by a spring urged lever 26 to direct oil through either of conduits 16 or 17 or to cut off both conduits from the oil supply. When the lever 9 is raised within the arc A-B the pump supplies pressure oil to raise the main actuator and also supplies oil through the relief valve to the auxiliary actuators. When the lever 9 is moved from the arc A-B the oil is trapped in the auxiliary actuator until the lever 9 is moved so that the' cam contacts the follower 23 raising the valve 20 allowing oil to flow to the sump through conduit 19. The valve 20 also acts as an overload valve when hydraulic overload occurs in the auxiliary actuators. The tractor hydraulic system is protected from overload by a non-return valve 18. The relief valve assembly is arranged as an attachment to bolt in the side of the tractor and the cam follower 23 is arranged so that it may be disconnected and fixed in an alternative position on the valve assembly so that the tractor hydraulic system may be used in the normal way. The selector valve is mounted on a bracket attached to the opposite side of the tractor to the relief valve assembly. The invention may be used to control a loader as disclosed in Specification 769,991 [Group XXX].
Patent GB-1217384-A (GB)
Title: Improvements in and relating to vehicle shoe drum brakes
IPC: F16D65/14
Filed: 1968-05-09
Abstract: 1,217,384. Brakes. GIRLING Ltd. 5 May, 1969 [9 May, 1968], No. 21936/68. Heading F2E. A mechanical actuating linkage for the brake shoes in a drum brake comprises a pair of levers 14 or a lever and a roller having mutually abutting curved surfaces 22 which roll against each other to produce an expansion against support pivots 20 on abutments 10 on the shoes when drawn down, as shown in Fig. 3, by rod 24 and links 28. As shown in Fig. 5, the brake shoes are normally actuated by cylinder 38, but the present auxiliary mechanical operator is located within it to act on the same shoes. In the form shown in Fig. 6 the cylinder 38 lies within the mechanical actuator which in this form has only a single arm 46, pivoted at 50 as before but rolling against a roller 58 instead of another arm as above, Fig. 7. In a further modification using two arms, Figs. 10, 11, a strip 124 is used to draw the arms down, and a covering saddle 136 is also provided. Metal fatigue may be reduced by facing the rolling surfaces with additional spring strips 160, Fig. 13.
Patent GB-1475794-A (GB)
Title: Gas discharge display and memory device
IPC: H01J11/12
Filed: 1974-05-17
Abstract: 1475794 Gas discharge display panels OWENS-ILLINOIS Inc 17 May 1974 21959/74 Heading H1D The exact position of the discharges in a gas discharge display and/or memory panel as described in Specification 1,254,114 comprising opposed dielectric charge storage members backed by crossed electrode arrays, and in which one or more pilot discharge cells are provided, is determined by providing opposing areas of high electron yield material on each charge storage surface, each area being located at or near an electrode crossing point and being surrounded by a low electron yield material. The two materials are selected so that the ratio of their Townsend second coefficients is at least 1�5. Suitable high electron yield materials are oxides of Pb, Bi, Y, La, Er and Sm, and suitable low electron yield materials are oxides of Al, Si, Zr, Ti and Hf. The high electron yield material may be applied as islands of circular or any other geometrical shape. If applied directly at the electrode crossing points part of one or both electrodes may be open or split or made transparent at these points to prevent the electrodes from blocking the light of the discharge In the embodiment shown spots 1 of high electron yield material are positioned between an electrode R and a transparent spur or cantilever portion 3 extending from an electrode C and are surrounded by low electron yield material 2.
Patent GB-1529544-A (GB)
Title: Filter and demodulation arrangement
IPC: H03H17/00
Filed: 1977-05-25
Abstract: 1529544 Communication systems; demodulation arrangements PHILIPS GLOEILAMPENFABRIEKEN NV 25 May 1977 [28 May 1976] 22042/77 Headings H3T and H4P An arrangement for filtering and demodulating passband signals which are obtained by modulating a carrier in accordance with a limitedbandwidth baseband signal, e.g. a QAM, PSK or VSB modulated signal, comprises an input 10 receiving a digital signal, derived if necessary from an analogue signal by way of an A/D converter, not shown; respective digital filters 20, 30 connected to the input 10 and producing first and second filtered passband signals having a 90 degree phase difference, respective digital demodulators 40, 50 for the said first and second signals; a digital circuit 80 for combining the outputs of the demodulators 40, 50; and an output 90 at which a filtered and demodulated digital signal is obtained corresponding to the required baseband signal. The digital filters 20, 30 are of the type which effect a sampling frequency reduction, i.e. signal samples occurring at a relatively high frequency f H  at the front end of the filter are converted into output signal samples at a relatively low frequency f L . Thus, most of the digital computations required to be made in the filters 20, 30, in the demodulators 40, 50, in the circuit 70 which provides in-phase and quadrature carrier signals for the demodulators, and in the combiner 80 can be effected at the lower frequency f L . The required control signals at frequencies f H  and f L  are derived from a circuit 60. The specification explains how this arrangement enables a fully digital implementation to be effected, realizable in integrated-circuit form with programmable filter coefficients if desired.
Patent GB-653878-A (GB)
Title: Improvements in or relating to electronic switches
IPC: H01J31/06
Filed: 1948-08-20
Abstract: 653,878. Discharge apparatus. GENERAL ELECTRIC CO., Ltd., HEAD, N. E., and KAYE, E. J. Aug. 20, 1948, No. 22043. [Class 39 (i)] An electronic switch particularly for use in multichannel signalling systems comprises an evacuated envelope 1 containing an axial cathode 2, a plurality of anodes 3 shaped to form a discontinuous cylinder concentric with the cathode and auxiliary electrodes or guides 4 extending radially from the vicinity of the cathode towards the gaps 8 between the anodes 3.' The anodes 3 are connected in series with respective load resistors 7 of a value such that anode potential does not fall appreciably when anode current flows, but the commoned load resistors 9 are such that the potential of an associated guide 4 falls substantially upon current flow therethrough. The tube is subjected to a uniform axial magnetic field such that electrons emitted from the cathode move in circles which drift along equipotential lines produced by the electric field and initially no anode current flows. If now one of the anodes is reduced to cathode potential, the equipotential lines of near cathode potential will be displaced towards that anode, resulting in emitted electrons being collected thereby and one or other of the adjacent guides 4, whereupon the potential of the current carrying guide drops so that even if the low potential anode is restored to its normal positive potential electrons still continue to flow to the anode and operative adjacent guide. These conditions persist until the potential of another anode is reduced below that of the guide 4 in which current is flowing, when the electron flow is switched to the other anode and an adjacent guide. The electron flow is thus switched from one anode to another by applying a negative pulse to the anode to which the flow is to be switched. Two such switches used, respectively, at the transmitter and receiver ends of a multi-channel signalling system may be synchronously stepped by applying negative pulses simultaneously thereto. Switching may, alternatively, be achieved by pulsing the guides. The electron flow to the various anodes may be modulated by means of a common concentric grid or by individual grids in the respective cathode-anode paths. Specification 619,785 is referred to.
Patent GB-909827-A (GB)
Title: Improvements relating to semiconductors
Inventor: CASTLE PETER FRANK
IPC: H01L21/00
Filed: 1958-07-09
Abstract: 909,827. Semi-conductor devices. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. July 6, 1959 [July 9, 1958], No. 22056/58. Class 37. A method of making an NPN junction structure from an N-type body comprises producing, by oxidation, an oxide coating over the body except for at least one selected area, and then simultaneously diffusing into the body a donor and an acceptor, the oxide coating being pervious only to the acceptor, which is chosen to have the higher diffusion constant. The surface concentration of donor is made greater than that of the acceptor so that in the uncoated areas an N-type zone is produced above the P-type layer which extends beneath both coated and uncoated areas. In the embodiment the entire surface of an N-type silicon wafer is oxidized by heating in an oxidizing atmosphere and the oxide layer etched from a strip on one face. Gallium and antimony, arsenic or phosphorus are evaporated on to the surface in such a way as to give a greater surface concentration of donor and the wafer heated to effect diffusion of the activators. The P-type layer produced is moved from the edges of the resulting wafer to give a PNPN type body. The layer may also be removed from the face of the wafer opposite the strip to give the NPN configuration shown in Fig. 1. A transistor is formed from this body by making ohmic contacts to region 1, N-type strip 3, and to the layer 2 on one or both sides of strip 3. As an alternative, an PNPN assembly is produced from the Fig. 1 body by alloying an acceptor to the back surface of region 1. If bare strips are etched on both faces of the wafer prior to diffusion, an NPNPN configuration is produced.