baber/WOPTO huggingface dataset:
Patent GB-688013-A (GB)
Title: Improvements in super-regenerative radio receivers
IPC: H03D11/02
Filed: 1951-07-16
Abstract: 688,013. Super-regenerative circuits; valve generating circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 16, 1951 [July 19, 1950], No. 16799/51. Classes 40 (v) and 40 (vi). In a super-regenerative receiver of the type in which the valve generating the quench voltage also serves to provide the signal frequency regeneration the quench circuit and the signal input circuit are both connected between the cathode and a secondary emitting electrode to provide negative resistance and the quench voltage is applied to one control grid and the signal to another to increase the negative resistance. As shown, the signal and quench tuned circuits 2 and 3 are connected in series between the cathode and the secondary emitting electrode 10, the potentials on the electrodes being such that a negative resistance appears between the cathode and secondary emitting electrode. A capacitor 8 feeds quench voltage to the second control grid and a capacitor 12 feeds signal voltage to the first control grid. Modulation output is taken from the anode. Screen grids are interposed between the two control grids and between the anode and the secondary emitting electrode or second control grid. A capacitor may connect the junction of the two resonant circuits with the first screen grid 7 and the secondary emitting electrode may be connected by a capacity to the second screen grid 9 to feed the quench frequency to it. In an alternative arrangement, Fig. 1 (not shown), the two tuned circuits are connected in parallel.
Patent GB-203804-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K3/24
Filed: 1922-06-17
Abstract: 203,804. Parsons, Sir C. A., and Rosen, J. June 17, 1922. Armatures and field magnets, cooling.-The stator end windings of dynamo-electric machines are cooled by directing air through them by the help of radial and circumferential diverters. In the arrangement shown in Fig. 1, in which the main body of an alternator is cooled by an arrangement of ducts as described in Specification 15585/14, the space at each end of the stator containing the end windings c is divided into a number of cells bv radial diverters e and circumferential diverters f. Each cell is supplied with cooling air through an aperture b from a duct a. The cells may be arranged round, say, two-thirds of the circumference, and the cooling air, after passing through the end windings in the cells, passes around the circumferential duct i containing the lower portions of the end windings to the outlet k. The flow of air may be reversed by making the opening h the inlet.
Patent GB-313954-A (GB)
Title: Improvements in magnetic tachometer
IPC: G01P3/495
Filed: 1929-05-31
Abstract: 313,954. A.C. Spark Plug Co., (Assignees of Zubaty, J.). June 20, 1928, [Convention date]. Magnetic speed indicators.-A tachometer primarily for indicating the speed of a running film in a projector is of the eddy-current fixed magnet type. The tachometer has a. cup-shaped frame 21 of a non-magnetic material which is secured to the cup-shaped casing 34 by means of studs 46 which extend through bores in the bosses 38, 39 and which are provided with integral spacing collars 47 for spacing the frame from the casing. Integral with the frame 21 is the bearing member 22 provided with a bore 23 journaled on which is the drive shaft 24 which takes the end of the flexible shaft driven by the shaft of the projector and to which is firmly secured the rotor 30. The magnet 40 of the split ring type having an interpolar gap 41 is situated in an annular rabbet 42 in the frame with the gap opposite the boss 39. The gap of the magnet is bridged by a strip 50 of magnetic material such as a nickel-iron or nickel-copper alloy, which has a negative temperature coefficient of magnetic permeability for compensating the tachometer for errors due to temperature changes, and which is kept in adjusted position across the gap of the magnet by means of the clamp 51. The central portion 45 connecting the ends 44 of the bridge 43 is raised to provide a space for the hair spring 69 one end of which is secured to a spindle 52, which carries the drag disc 53 of aluminiummagnesium alloy, and which can rotate in jewelled bearings rotated in the end of the shaft 24. A pointer 77 is secured to a hub 76 carried by the spindle 52 and moves over a dial 71 graduated both in units of distance per unit of time and in units of time per unit of distance. Modified forms of constructon are described, one in which the split-ring magnet is replaced by a horse-shoe magnet. The Specification as open to inspection under Sect. 91 (3) (a) describes apparatus by which the tachometer, by means of the two diametrically opposite studs 46, is fixed to a member which has universally adjustable connection with a pedestal which can be fixed to a wall. This subject-matterdoes not appear in the Specification as accepted.
Patent GB-1055343-A (GB)
Title: Improved olefinic polyester resin compositions and the production thereof
IPC: C08F283/01
Filed: 1965-04-21
Abstract: A hardened resin composition containing glass fibres embedded therein is produced by curing a mixture containing glass fibres and an olefinic polyester together with an itaconic ester in the presence of a catalyst, the ester being present in such an amount that the hardened product has a refractive index equal to that of the embedded glass fibres.  An unsaturated monomer, e.g. styrene and a substance to decrease the dichroism and increase the transparency, e.g. ethyl acetate, acetone or dimethyl sulphone may also be present.  The itaconic ester may be the dimethyl or di-n-butyl ester and may be present in the proportion of 10 to 50% based on the amount of polyester and copolymerizable monomer. The polyester may be from maleic anhydride, phthalic anhydride and ethylene or propylene glycol-the phthalic anhydride may be replaced by isophthalic acid or endo-dichloromethylene tetrachlorophthalic acid.  The catalyst may comprise methyl ethyl ketone peroxide and, as promoter, cobalt octoate.
Patent GB-117558-A (GB)
Title: Improvement in Centrifugal Pumps.
Inventor: GULL ADOLF EWALD
IPC: F04D29/22
Filed: 1917-11-16
Abstract: 117,558. Gull, A. E. Nov. 16, 1917. Disk-supported-blade pumps; balancing moving parts; leakage-preventing devices.-The disk D on the suction side of the impeller is extended beyond the blades G and on its outside surface has an annular recess A divided by radial ribs at a number of divisions. The liquid in these recesses exerts an end pressure on the impeller which is raised by the axial movement of the impeller altering the clearance spaces between the impeller and the casing. A flow of liquid outwards is also set up which prevents inward flow from the discharge to the suction. The invention is applicable to single and double inlet pumps.
Patent GB-277768-A (GB)
Title: Improvements in furnaces having suspended arches
IPC: F27D1/02
Filed: 1926-07-07
Abstract: 277,768. Morton, L., and Hargrove, J. July 7, 1926. Blocks for furnace roofs.-A flat suspended roof for furnaces is built up of rows of similar blocks A the sides of which are tapered towards the lower end and which are formed with inverted T-shaped slots B in which engage supporting girders D. The overhanging surface of each slot B is rounded as shown at H to facilitate the blocks hanging at the required angle to the vertical.
Patent GB-1356238-A (GB)
Title: Carpet securing device
IPC: A47G27/04
Filed: 1972-05-05
Abstract: 1356238 Securing carpets to floors ROBERTS CONSOLIDATED INDUSTRIES Inc 5 May 1972 [14 July 1971] 17014/73 Divided out of 1356237 Heading A4S In a method of carpeting a floor 22 having a removable access panel 26 an outer flange 36 of a substantially continuous, upwardly-facing, channel 34 is secured to the floor area 24 around the panel 26, a carpet 28 is placed on the floor 22 and over the channel 34, and external and internal cuts are made in the carpet along the outer and inner walls 40, and 44, of the channel 34 using the latter as guides and to form a close-fitting, removable, inner carpet panel 30 the carpet edges 46, 48, Fig. 5, being covered, and the removable panel 30 being secured, by pressing the leg 50 of a substantially continuous T-shaped, flexible, strip 52 into the channel 34. The latter can be formed by bending a straight metal extrusion into the desired endless configuration and making a number of cuts 38 which extend through the flange 36, the outer wall 40 and the base 42 of the channel 34 at the corners. The cuts 38 are not necessary if the channel 34 and the flange are moulded from plastics material. The leg 50, which may be offset to provided flanges 54, 56 of different widths terminates with laterally projecting-lips 58, 58 which are adapted to fit into a longitudinal recess 60, Fig. 4, at the bottom of the channel 34 the internal walls of which are serrated. The carpet 28 is adhered to the floor 22 the panel 30 being similarly secured to the floor area 24, if desired. If a carpet (62) is laid in tension over a pad (64) the channel (34) may be provided with a raised external flange (66) which is adapted to be nailed to the floor (22).
Patent GB-1172792-A (GB)
Title: Improvements in Manipulators.
IPC: B21J13/10
Filed: 1968-04-10
Abstract: 1,172,792. Manipulator. SCHLOEMANN A.G. 10 April, 1968 [15 April, 1967], No. 17213/68. Heading B3H. A billet manipulator comprises a pair of parallel shafts 2 rotatably mounted in bearings 1 in a frame 11 and keyed on each shaft a pair of bell-crank levers 3 whose lower legs 4 are joined to tie-rods 5 by ball-joints. A carrier shaft 6 is joined to each pair of tie-rods by ball-joints and the shafts 6 are parallel to the upper shafts 2. A gripper holder 9 is slidably mounted on the carrier shafts and reciprocated by a piston 8 cylinder 7 assembly on each shaft. Buffers 10 are provided at each end of the carrier shafts. The gripper holder 9 is rotatably mounted and each part of the bearings 12 can be reciprocated separately or together in the same or opposite axial direction to arrange the holder relative to the machine axis.
Patent GB-131782-A (GB)
Title: Improvements in Electric Cell Plates.
Inventor: MAJIMA TEIJIRO
IPC: H01M4/64
Filed: 1918-10-22
Abstract: 131,782. Majima, T. Oct. 22, 1918. Electrodes; separators.-An electrode consists of a core 1 of porcelain or earthenware covered by electrolysis or spraying with a layer of lead 3 with the exception of projections 4 which are left exposed. These projections are integral portions of the core and act as separators. In the electrolytic process of coating the porcelain &c. core with lead, it is first coated with gold paint and then immersed in a bath of lead silico-fluoride, a lead plate being used as the anode.
Patent GB-594083-A (GB)
Title: Improvement in amplifiers for audio frequencies and method of deriving feedback voltages, useful for making sound records and other purposes
IPC: H04R3/00
Filed: 1944-09-13
Abstract: 594,083. Magnetic instruments. RADIO CORPORATION OF AMERICA. Sept. 13, 1944, No. 17489. Convention date, Sept. 13, 1943. [Class 40 (iv)] [Also in Group XL] An audio-frequency amplifier has a transducer coupled to its output and means are provided for translating the currents fed to the transducer into frequency modulated waves which are fed back in the form of audiomodulation currents to the amplifier to reduce distortion. Fig. 1 shows a recording system, the audio-frequency output from microphone 10 being fed through amplifier 8 to coils 3 and 4 wound round the upper and lower portions of armature 9 which is located between the polepieces of magnet 9<1>, the south poles (not shown) being on the opposite side of the armature to the north poles. Current flowing through the coils causes the armature and thus the stylus 1 to vibrate laterally and cut grooves in the record. The armature may be mounted on a shaft 7 to which is secured the holder 5 carrying stylus 1 or the holder may be bolted to the armature, Fig. 3, and the coils wound around the two, the armature 20 being shown laminated. The holder 5 is connected to ground and with a metallic plate 14 forms a variable condenser shunting the tank circuit of oscillator 11. Vibration of the stylus causes frequency modulation of oscillator 11, the output from discriminator 15 being fed back in degenerative sense to amplifier 8. The plate 14 may be embedded in a block of insulated material secured to one of the polepieces, Fig. 4 (not shown). Specification 594,077 is referred to.
Patent GB-1156268-A (GB)
Title: Improvements relating to Harrows
IPC: A01B19/06
Filed: 1968-04-11
Abstract: 1,156,268. Reciprocating harrow. AMAZONEN-WERKE H. DREYER. 11 April, 1968 [13 April, 1967], No. 17510/68. Heading A1B. A reciprocating harrow comprises one or more transversely reciprocating tined beams 4, 4<1> driven by the power take-off of the towing vehicle, the rotary movement of the power take-off being converted into rotary oscillating movement by driving elements assembled in a closed housing 2 which forms part of the frame. The driving elements include a swash plate and crank rod drive. The beams 4, 4<1> are pivotally connected together and to the frame 3, 3<1> by links 14, 14<1> and to the output shaft of the drive unit 2 by link 12. A step-up or step-down gear and a flywheel may be provided in front of the drive unit.
Patent GB-120578-A (GB)
Title: Improvements in or relating to Spring Wheels for Vehicles.
Inventor: KANTER VICTOR EMIL
IPC: B60C7/14
Filed: 1918-10-26
Abstract: 120,578. Kanter, V. E. Oct. 26, 1918. Spring wheels with continuous outer resilient suspension ring. - The side flanges 4 of the rim are formed with undercut parts 5, 6 against which bear normally circular spring rings 7, 8. A rigid tread ring 10, which may carry a pneumatic tyre, or a resilient tread ring, bears against the outer spring ring 8, the inner spring ring 7 being auxiliary. The undercut part 6 and the inner surface of the Tread ring are sinuous, relative creeping being prevented by transverse rollers 17 in spring tubes. The ring 7 may be dispensed with. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a form in which a spring ring is connected by arms to a plate on a sliding tube carrying an adjustable helical spring. This subject-matter does not appear in the Specification as accepted.
Patent GB-453184-A (GB)
Title: Improvements in or relating to belts for personal wear
IPC: A41F9/00
Filed: 1935-06-19
Abstract: 453,184. Equipments for carrying loads. MONK, B., 2, Beechwood Road, Sanderstead, Surrey, and RICKWOOD, H. J., Ellenden, Hawkhurst, Kent. June,19, 1935, No. 17649. [Class 141] An equipment for enabling the wearer to carry a load when in a crouching or kneeling position, e.g. carrying a stretcher in a mine, comprises a belt fitted with means whereby the pull of the load always passes through a hip joint. The belt comprises layers of canvas fitted with transverse metal stiffeners 38, 40 and with a longitudinal leather stiffener 35. The load is carried by slings 30 carried by straps 16, 17 arranged V fashion, the latter being fitted with a ring 24. The slings are provided with slip rings 32 for locking the slings on to the inserted members, the rings being furnished with fixing straps 34. In a modification, the slings are carried by rings secured to single straps, the lower ends of the straps passing through loops fixed to the belt.
Patent GB-997141-A (GB)
Title: Conveyor apparatus
Inventor: NIXON FRANK
IPC: B65G37/00
Filed: 1963-05-03
Abstract: 997,141. Endless conveyers; chains. ROLLS-ROYCE Ltd. April 27, 1964 [May 3, 1963], No. 17689/63. Heading B8A. Conveyer apparatus in a vertical shaft 10 of a coal mine comprises a series of endless conveyers 16 arranged sequentially one above the other, the conveyers being adapted to hoist filled trucks 12 (or tubs on detachable bogies) to the top of the shaft 10. Each conveyer is provided with teeth 17 which are engageable beneath a portion 14 or 15 of a flange 13 on a tub 12. When a tub has been raised to the upper ends of one set of conveyers, the teeth 17 become disengaged from, say, the portions 14 at the same time as the teeth 17 of the next adjacent set become engaged with the-portions 15. Shafts 5 carry wheels 4 on which the conveyers rotate and each shaft is driven by a separate motor 6. In a modification, Fig. 7, a motor 46 drives all the shafts 5 through a common shaft 42. In Fig. 4, three series of conveyers 16a-16c enable tubs 12a to be raised while tubs 12b are simultaneously being lowered. Fig. 5 shows a truck 12 which may be raised by a crank and piston device 26, 30 to a position (shown in dotted lines) where the teeth 17 on the lowermost conveyers automatically engage the flange 13. Alternatively, the crank 30 is dispensed with and a spring (not shown) is mounted within the piston. The truck may be dropped on to the piston 26 so as to compress the spring which then expands to carry the truck upwardly for engagement by the lowermost conveyers. For unloading the coal, the trucks may be moved clear of the mine shaft 10 by carriages 32 movable on a track 31, Fig. 6. In Figs. 8, 9, 10, concrete slabs 70 for constructing a building 71 are conveyed upwardly by supporting frames 66 adapted for engagement by conveyer chains having integral flanges 56. The apparatus need not be mobile but may be fixed to the ground and to the building structure.
Patent GB-1168133-A (GB)
Title: Improvements in Thermistor
IPC: H01L29/207
Filed: 1967-04-18
Abstract: 1,168,133. Thermistors. GENERAL ELECTRIC CO. 18 April, 1967 [19 April, 1966], No. 17692/67. Heading H1K. [Also in Division C1] A thermistor has two leads ohmically bonded to a doped synthetic single crystal diamond and displays a negative temperature coefficient of resistance of greater than 0.05 over a temperature range in excess of 500 C. The dopant may be boron, aluminium, or beryllium and may be incorporated (in the proportion of 0.001-1.0% by weight of diamond) during the nickel-iron catalysed conversion at 1100- 1700 C. and a pressure of 45-60 kilobars of graphite to diamond. 250-300Á diamonds are separated from residual graphite, catalyst, and pyrophyllite container material by respective treatments with sulphuric-nitric acid, hydrochloric-nitric acid, and dilute hydrofluoric acid. To make the thermistor of Fig. 1 (not shown), a degreased diamond (1) is placed in contact with degreased heat sink-lead assemblies consisting of iron-nickel-cobalt leads (4) welded to molybdenum or tungsten bodies (3) each coated with, for example, a palladium-nickel-chromium alloy (2). These parts were jigged with an alumino-silicate glass preform (5) in a gas-tight furnace containing oxygen-free forming gas of low dew point and heated to form ohmic con tacts and seal the assembly, the leads being pushed inwards during the process. An outer envelope (7) of devitrified glass is applied to protect the lead-heat sink welds. Oxide on the exposed portion of the leads is removed and the leads chromium-plated. Bonding alloys to replace the ternary alloy used are gold-nickelchromium, iron-nickel-cobalt, and palladiumnickel. The lead materials are tungsten, molybdenum, and the following materials which require no protective chromium coat:-platinum, palladium, and platinum-clad molybdenum. If leads are attached directly to the diamond, alloying, diffusion bonding, thermocompression bonding, ultrasonic welding, or nail-head bonding may be used. If headers are used bonding materials may be placed thereon by evaporation, as a slurry, or by firing-on an alloy preform. The atmosphere used in the firing stage and which is retained within the encapsulation, may instead be argon, helium, nitrogen or hydrogen, or the firing may be effected in vacuo.
Patent GB-1018666-A (GB)
Title: Improvements in or relating to electric lamps
IPC: H01K1/28
Filed: 1963-05-04
Abstract: 1,018,666. Incandescent electric lamps- M. RIVLIN. June 25, 1963 [May 4. 1963], No. 17723/63. Heading H1F. The whole or part of the external surface of the lamp envelope includes a pattern of closepitched intersecting raised lines 1, 2, of semicircular or angular cross-section. One set of lines may be circumferential, the other extending from the closed end of the envelope to or towards the neck. The pattern is formed by the use of moulds when blowing the glass of the bulb.
Patent GB-1139976-A (GB)
Title: Two-part fastener for securing an apertured member to an apertured support
Inventor: PEARSON ARTHUR STANLEY
IPC: F16B5/10
Filed: 1966-04-22
Abstract: 1,139,976. Stud and socket fastenings. CARR FASTENER CO. Ltd. 1 Feb., 1967 [22 April, 1966], No. 17737/66. Heading E2B. A two-part fastenerfor -securing an apertured member a to an apertured support b comprises support engaging part A and a retaining pin B, the former comprising a body '1: formed of resilientsynthetic plastics adapted to: be assembled; in: the aperture in the sups port and provided with means 2, 3 and 4 (not shown) respectively engageable with opposite faces of the support to .secure the body in assembly therewith, the body having an axial bore and laterally extending opposed abutments 8 being provided adjacent the outer end of the bore, the pin comprising a shank 9' insertable thrdugh "the' aperture in the member to be secured and into the bore in the body, the shank having a head 10 at one end and lateral projections 13 at the other end so arranged that on the shank being inserted through .the aperture in thesaid member and into the said bore in the support engaging part when assembled with the .support, the shank will, on 'being 'rotated, be .adapted to engage the said abutmentsso that .the pin will be secured to.the support engaging part and the said member secured' to the - support by the head of the pin engaging the adjacent surface of the said member. In the construction shown the surfaces 7 extend' from the extensions 6 and terminate at the abutments 8. The pin after it has been fully inserted into the apertures in the member and support and has entered the bore .5 it is rotated through 90‹ by a screwdriver applied' to a slot in the head and during the rotation the projections 13 ride on the cam-like surfaces 7 and draw the pin axially inwardly of the bore so that the means 2 ,which. as shown ,is a flange drawn into close engagement with.. the support and the head 10 exerts pressure on the member and draws it tightly against: the adjacent surface of. the 'support: When the pin has. been rotated through 90‹ the 'projections 13 engage - the abutments 8 and,the opposed side edges of' a nose-, 12 of the pin provides' the abutments seat-in recesses 14 to prevent rotation of - the pin beyond its fastening position-;-The means 3, 4 are wing-like.elements which are resilient to enable the part A to be snapped through the aperture in the support b.