baber/WOPTO huggingface dataset:
Patent GB-487407-A (GB)
Title: Improvements in and relating to resilient supports for machines and the like
IPC: F16F1/38
Filed: 1936-12-21
Abstract: 487,407. Resilient mountings ; hinges. GOLDSCHMIDT, M. Dec. 21, 1936, No. 35025. Convention date, March 2. [Class 108 (iii)] [Also in Group XXV] A :resilient mounting for machines and like apparatus comprises a metal pin 3 having one or more holes 5 whereby the apparatus is secured to the pin which is supported by rubber bushes 4 vulcanized to the pin and to metal bearings 1 having common fixing flanges 2. The apparatus may be formed partly to surround the pin and may be secured thereto by a screw passing through the hole 5. Bearings 1 and rubber bushes 4 additional to those shown may be provided, the pin 3 being lengthened and provided with additional holes 5.
Patent GB-985915-A (GB)
Title: Method of erecting building structures and hoisting gear for use in said method
IPC: E04G21/16
Filed: 1961-01-11
Abstract: 985,915. Erecting buildings; building units. F. HINSE. Jan. 11, 1961 [Sept. 15, 1960], No. 35202/61. Divided out of 985,914. Headings E1A and E1B. [Also in Division B8] A method of erecting a building structure comprises hoisting successively stacks of the blocks described in the divisional Specification 985,914 using a carrier bar 14, a rope 17, a top rail 13, and setting the stacks down in contact on a completed part of the structure. The blocks are formed as shown with vertical cavities, a horizontal bar-receiving recess 7 and with interlocking formations on its top, bottom, and end faces. The stacks may be partially filled with concrete and with protruding tie members, the concrete filling being completed after the stack has been hoisted into the building structure.
Patent GB-356042-A (GB)
IPC: H03L1/04
Filed: 1930-11-22
Abstract: 356,042. Wireless transmitting apparatus. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. Nov. 22, 1930, No. 35268. Convention date, Dec. 18, 1929. [Class 40 (v).] To ensure constancy of frequency for common wave broadcasting a piezo-electric crystal is maintained at a constant temperature by at least two thermostatically controlled enclosures one within the other. The Figure shows a piezo-electric crystal Q within an enclosure 4 having a thermometer T1 and heating resistance H1. The oscillating valve R is contained within an enclosure 3 arranged in a casing 2 heated by an external heating resistance H2 under the control of thermometer T2. Filters S1 .. S4 are provided in the thermometer connections and in the valve and heater supply leads. The tuning and filter condensers are of heavy construction and have small dielectric losses to avoid heating.
Patent GB-483103-A (GB)
Title: Improvements in or relating to automatic centrifugal clutches
IPC: F16D13/71
Filed: 1936-10-07
Abstract: 483,103. Friction clutches. NEWTON, N. B. Oct. 7, 1936, No. 35339. Divided application. [Class 80 (ii)] In a centrifugal friction clutch, studs e fixed to the movable driving plate a are secured each to one end of a flat blade spring g, the other end of which is secured to a back plate c, so as to provide a driving connection between the plates a and c while allowing axial movement of the plate a. The plate c is fixed to the driving flywheel a<1> by studs c<2> fitted with spacing sleeves. The centrifugal mechanism, which may be constructed as described in Specification 483,102, acts on a plate b which is slidable on the studs e and which acts on the plate a through interposed springs d. The plate b is retracted by springs b<1>. Collars f on the studs e coact with the plate b to limit the extension of the springs d. Specification 436,747 also is referred to.
Patent GB-635562-A (GB)
Title: Improvements in and relating to electrical logarithmic converters
IPC: G01R15/00
Filed: 1946-11-28
Abstract: 635,562. Thermionic valve voltmeters. SCOPHONY, Ltd., and FRANKLIN, D. P. Nov. 28, 1946, No. 35363. [Class 37] [Also in Group XL (c)] An apparatus for producing from an input voltage applied at 12 an output voltage at terminals 14 which is a linear function of the logarithm of the input voltage in order, for example, to expand the scale of a meter at lower readings, comprises a generator 11 of a waveform, a substantial part of which is exponential an amplitude limiter 10 to which the generated wave and the input voltage is applied and means 13 for producing from the resulting pulses a voltage proportional to the duration of the pulses and constituting the desired logarithmic output voltage. As decribed, the generator produces an exponential sawtooth wave 18, for example by charging a condenser through a resistance and discharging it rapidly and this wave is applied to a limiter which starts conducting at an amplitude corresponding to line 17 and limits on a small signal increment at 16. Input signals of voltage E1 or E2 (Fig. 3), alter the position on the curve at which the limiter operates, with the result that the output from the limiter is in the form of pulses 19, 19<1> whose width varies as the logarithm of the input voltage. These pulses may be converted into a steady signal by passing them through a low-pass filter. The D.C. component may alternatively by extracted- and the resulting pulses applied to a peak voltmeter.
Patent GB-1124024-A (GB)
Title: Mowing apparatus
IPC: A01D34/43
Filed: 1965-08-18
Abstract: 1,124,024. Lawnmowers. TORO MFG. CORP. 18 Aug., 1965 [19 Aug., 1964], No. 35472/65. Heading A1F. [Also in Divisions B7 and F2]  A motor-driven gang-lawnmower comprises a three-wheeled tractor Fig.( 1) supporting three power-driven motor units 200, 201, 202 mounted one in front of each wheel, the two front units being pivotally interconnected by a yoke 160, 164 (Fig. 9) and suspended by chains 82, 83 from arms 80, 81 on the tractor whereby they can float to accommodate ground-irregularities. Each mower-unit comprises a frame formed of end-plates 203 'interconnected by crossmembers 204 and a combined bed-bar and ledger blade 205. The member 205 is a triangular prismatic box-section tube formed by bending and then welding sheet-metal and includes an upturned front edge 211 to which is matellurgically bonded a strip of tungsten carbide. The reel-knife 221 has bearings 219 carried by plates 208 which are pivoted to the end-plates 203 and suspended by threaded rods 229 from the bentover upper edges 225 of the end-plates. A spring 233 interposed between the bearing- support 230 and an adjustable abutment 227, 228 on the rod 229 provides a yieldable support for each end of the reel. Each mower-unit has a full-width arcuate skid 212 pivoted to it and is adjustable relative to the ground by a rod 214 selectively engageable in holes 216 in a fixed detentplate 215 secured to the middle of one of the cross-tubes 204. The rod 214 is in two inter-threaded parts so as to provide also a fine-adjustment. The skid 212 is cut away obliquely at its ends 216 to prevent digging- in of the mower units in turning.
Patent GB-1015197-A (GB)
Title: Method of cladding using hydrostatic pressure applied to heated units inside a cold-liquid cladding apparatus
IPC: B23K20/02
Filed: 1962-09-18
Abstract: 1,015,197. Fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. Sept. 18, 1962 [Oct. 9, 1961], No. 35477/62. Heading B6C. [Also in Division B3] A fuel element or assembly of fuel elements and cladding are placed in an envelope, the envelope is filled with powder and the powder is compacted, the block formed of the compacted powder and element or elements and cladding is removed from the envelope and placed in a flexible container, the unit comprising the block and container is heated and hydrostatic pressure is applied to the heated unit. The uranium-zirconium alloy plate fuel element 1 of a nuclear reactor fuel element enclosed by two zirconium alloy plates 2a, 2b welded at 3 is fitted in a flexible envelope 4a, the envelope is filled with zirconium oxide powder and compacted. The block of compacted powder and element and cladding is removed from the envelope and placed in a stainless steel container 4b. The unit comprising the block and container is placed in a furnace at 850‹ C. and the heated unit is immersed in cold oil 7 in a container 6, the oil being supplied to a conduit 8 from a compressor. Subsequent thermal treatment may complete diffusion. A number of clad elements may subsequently be joined by welding. The flexible container may be of plastic material, the compaction may be by hydrostatic pressure or in a press and the powder may be magnesium oxide or aluminium oxide. A number of similar platetype cladding assemblies may be clad and bonded simultaneously.
Patent GB-1115150-A (GB)
Title: Substituted oxazolidines
Inventor: METZGER SIDNEY HENRY
IPC: C08K5/35
Filed: 1965-10-08
Abstract: Polyesters, polyurethanes and polyesteramides are stabilized against hydrolysis by compounds of the formula <FORM:1115150/C3/1> where Z is the radical obtained by removing at least 2 NCO groups from an organic polyisocyanate, n is at least 2, R1 is aryl, alkyl or cycloalkyl and may be substituted and R11 is the residue obtained by removing the 1,2-epoxide group or 1,2-carbonate group from a 1,2-epoxide or a 1,2-alkylene carbonate.  The stabilized polyurethanes may be obtained by reacting a stabilized polyester with a polyisocyanate.ALSO:Naturally occurring esters such as castor oil, coconut oil, corn oil, cottonseed oil, horse fat oil, lard oil, wool fat, japan wax, mutton tallow, beef tallow, neat's foot oil, palm oil, peanut oil, carnauba oil, spermaceti, beeswax, rapeseed oil, soya bean oil, whale oil and sperm oil are stabilized against hydrolysis and ageing by compounds of the formula <FORM:1115150/C4-C5/1> where Z is the radical obtained by removing at least 2 NCO groups from an organic polyisocyanate, n is at least 2, R1 is aryl, alkyl or cycloalkyl and may be substituted and R11 is the residue obtained by removing the 1,2-epoxide group or 1,2-carbonate group from a 1,2-epoxide or a 1,2-alkylene carbonate.ALSO:The invention comprises compounds of the formula <FORM:1115150/C2/1> where Z is the radical obtained by removing at least two NCO groups from an organic polyisocyanate, n is at least 2, R1 is aryl, alkyl or cycloalkyl and may be substituted and R11 is the radical obtained by removing a 1,2-epoxide or 1,2-carbonate group from a 1,2-epoxide or 1,2-alkylene carbonate.  The compounds are obtained by reacting a mono 2-imino-oxazolidine with a polyisocyanate at 50-220 DEG  C. and removing the isocyanate formed. The compounds are used to stabilize compounds containing ester groups.
Patent GB-816304-A (GB)
Title: Improvements in or relating to photographic objectives
IPC: G02B13/00
Filed: 1956-11-21
Abstract: 816,304. Photographic objectives. PAILLARD, S. A. Nov. 21, 1956 [Dec. 24, 1955], No. 35555/56. Class 97(1) In a photographic objective of the kind consisting of five air-spaced components of which the first, second and fifth are simple converging lenses while the third and fourth are diverging meniscus doublets, the radius of curvature R 4  is between 1.8 and 2.1 times the focal length f, the radius of curvature R 5  is between 0.45f and 0.60f, the radius of curvature R, is between 0.27 f and 0.32f, the radius of curvature R 8  is between 0.30f and 0.40f, and the radius of curvature R 12  is greater than 1.5 times the radius of curvature R 11 . Preferably also the radius of curvature R 2  is between 2f and 5f and the radius of curvature R 10  is between 0.4f and 0.7f. The radius of curvature R 6  may be between 10f and infinity, while the radius of curvature R 9  may be between 0.5f and 0.75f. The arithmetic mean of the refractive indices of the last three lenses is preferably more than 1.70 and the refractive index of the divergent lens of the second doublet is preferably at least 0.12 greater than that of the divergent lens of the first doublet. Numerical data are given for one example of the objective shown.
Patent GB-1526753-A (GB)
Title: Method of making photoconductive material
IPC: G03G5/087
Filed: 1975-08-28
Abstract: 1526753 Electro-photographic materials VARIAN ASSOCIATES Inc 28 Aug 1975 [29 Aug 1974] 35605/75 Heading G2C [Also in Division C1] Photo-conductive material of Formula  CdX-n(CdCO 3 ) where X is S or Se or a mixture thereof and n is 0<n#4 is produced by reacting a sulphide or selenide or mixture thereof with cadmium carbonate particles dispersed in water to convert part of the carbonate to CdX and separating the reaction product, the reaction and separation being performed so that the product contains less than 0.5 weight per cent of Na, K, chloride, bromide, nitrate or sulphate ions as non-volatilizable ionic contaminants and calcining the product to volatilize moisture and any volatilizable ionic contaminants. The material may contain dopants e.g. sulphates, nitrates or chlorides of Cu orAg, Cu or Ag ammonium complex, or Cu or Ag carbonate dissolved in ammonia. In the Examples, CdCO 3  is mixed with dopant in water, ammonia solution is preferably added and then H 2 S or H 2 Se bubbled through the dispersion or ammonium sulphide or selenide added to the dispersion. The dispersion is filtered, washed and calcined between 150‹C and 250‹C in a circulating air oven, ground and the particles dispersed in an acrylic resin and coated on a conductive support to produce an electrophotographic material.
Patent GB-383463-A (GB)
Title: Improvements in and relating to movable floor vehicles
IPC: B60P1/38
Filed: 1931-12-28
Abstract: 383,463. Fittings for loading and unloading vehicles. MOVABLE FLOOR (VEHICLES), Ltd., RENWICK, A. E., Adelaide Street, Portfield House, Cardiff, and SOLOMON, C., 11, Grosvenor Place, Bath. Dec. 28, 1931, No. 35834. [Class 78 (iv).] A vehicle provided with a movable floor consisting of a flexible band supported throughout its length on rollers is arranged for loading at either side, the band being operated by drums at each side of the vehicle. The floor may consist of two or more bands side by side, arranged to be driven together or independently. As shown, two bands 57, 60 are operated by drums 55, 56 and 58, 59 connected with gear wheels such as 67 driven by pinions 70, 75 and 71, 76. The pinions 70, 71 are on aligned shafts 72, 73 which may be connected by a clutch 86 while a second clutch 79 is provided in connection with the pinions 75, 76. A detachable ratchet handle 88 is provided for operating any of the pinions. The bands are supported on staggered rollers as in Specification 376,425. The edges of the bands are protected by overhanging lips 97, 98 on the end walls of the vehicle, and by a double flange 65 on the transverse member 54 between the floor sections. This partition may extend upwardly level with the walls of the vehicle. The drums 55 &c. are below the level of the floor, as shown in Fig. 3. Specification 293,997, [Class 78 (iv), Loading &c.], also is referred to.
Patent GB-853175-A (GB)
Title: Improvements in or relating to radiation measuring equipment
Inventor: HOGG JAMES FINSTON
IPC: G01T1/185
Filed: 1957-11-19
Abstract: 853,175. Measuring radiation; safety devices. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Nov. 12, 1958 [Nov. 19, 1957], No. 35975/57. Class 40(3). [Also in Group XL(c)] In radiation-measuring equipment comprising an ionization chamber and a D.C. amplifier, an A.C. of period small compared with the response time of the amplifier is applied to the chamber together with the D.C. polarizing voltage and passed to the amplifier via the inter-electrode capacitance of the chamber; the A.C. and D.C. outputs from the amplifier are separated and the former used to operate a circuit which gives an indication if the A.C. is absent, thereby showing a fault in the apparatus. The arrangement is particularly suitable as a "fail-safe" device for monitoring the neutron flux in a reactor. In the Figure an oscillator 5 operating at 30 kc/s. injects a signal via the line 4 on to the outer electrode 2 of the chamber, and this is picked up by the inner electrode 1 together with the radiationflux signal and passed to an electrometer valve V1.The output of the latter goes to a long-tailed pair V2 and V3, in which C3 and R4 provide negative feedback to stabilise the A.C. gain. The output of V3 is taken to a cathode follower V4 whose cathode potential will fall with increasing flux signal, whose value is shown on a meter M. When this value reaches a certain point the diode Dl will conduct and remove the feedback which normally occurs via R14 and Rl to the amplifier input. V2 is then cut-off and RL1 is de-energized to effect any desired safety control. Any fault leading to a fall in V4 cathode potential will also cause RL1 to be de-energized, while a rise in V4 cathode potential will cause D2 to conduct and cut-off V3 so that the other relay RL2 will be de-energized and effect the same control. The A.C. signal at the anode of V2 is taken off via a capacitor C5, but is prevented from reaching V3 and V4 by a by-pass capacitor C4. Instability is prevented by further capacitors C8 and C9. The A.C. signal from C5 is rectified by a diode pump circuit D3, D4 and applied to the suppressor grid of V5 to cut-off the anode current and maintain energized a relay RL3 in the screen circuit. Any fault in the polarizing supply to the chamber, or a short circuit across the electrodes, will result in the A.C. signal being reduced or cut-off, so that the screen current of V5 will fall and RL3 will be de-energized. This may effect the same safety control as RL1 and RL2 or give a separate fault indication. The (negative) rectified signal from D3 is partially backed-off by a positive voltage from R17 which is attached to the braiding of the cable 4 so that a break in the braiding or its earth connection will also cut off V5. The cathodes of V5 and V1 are connected via R25 so that when V5 trips and its cathode potential falls the A.C. gain of the amplifier falls, to compensate for a rise in H.T. voltage when screen current of V5 falls. This avoids chattering of RL3.
Patent GB-1006049-A (GB)
Title: Conversion of olefins
IPC: C07C6/04
Filed: 1964-09-02
Abstract: The disproportionation of C3-C6 olefins is effected in the presence of silica promoted with an oxide of tungsten and/or molybdenum. The silica is preferably high-purity grade but may contain alumina or magnesia; up to 30% of promoter is added.  Reaction is effected at 400-1100 DEG  F. and 0-1500 p.s.i.g. for 0.1-1000 seconds, e.g. at 0.5-1000 wt./wt./hr. or 0.1-1000 vol./vol./min.  A paraffin or cycloparaffin diluent may be used.  The conversions of propylene to ethylene and butenes and of butenes to propylene and higher olefins are exemplified.
Patent GB-984930-A (GB)
Title: Means for protecting electrical heating elements
IPC: H02H7/00
Filed: 1960-10-20
Abstract: 984,930. Protective arrangements; electrically-released switches. B. G. MARTINDILL. Oct. 10, 1961 [Oct. 20, 1960], No. 36044/60. Headings H2B and H2K. In an electric heating circuit, equipotential points of parallel resistance heater wires 1, 2 are connected to the heater winding 8 of a thermally released switch which interrupts the heating circuit in the event of unbalance due to an opencircuited or an overheated heater wire 1 or 2. The switch comprises a bimetallic element 9 which normally latches a manually-operable member 15 in the position shown. When the member 15 is released on the bending of the element 9, it moves outwardly under the bias of a spring 18 and causes a trifurcated blade spring 12 to open contacts 10, 11 in the heater circuit.
Patent GB-831205-A (GB)
Title: Improvements in or relating to electric circuit arrangements comprising one or more primary load circuits and one or more secondary load circuits
Inventor: TYRWHITT NORMAN HUGH
IPC: H05B39/10
Filed: 1956-11-27
Abstract: 831,205. Switching systems for substitution loads. GENERAL ELECTRIC CO. Ltd. Nov. 27, 1957 [Nov. 27, 1956], No. 36314/56. Class 38 (4). In a circuit having a primary load 1, 2, and a secondary load 8 arranged to be connected in substitution by a switch means R1, a relay R2 is arranged in a common lead controlling the switch means so that if the primary load becomes open-circuited, the switch means is rendered ineffective after several switching operations, by means of a thermistor 18. Coil R11 of relay R1 is operated through a switch S and a three-way fuse 14-16, which is arranged to disconnect coil R11 only when the current through thermistor 18 rises due to contacts 13 of relay 2 closing successively. Capacitor C allows a small idling current to pass through the thermistor to reduce the effect of ambient temperature variations. A series resistor 17 is provided to improve the thermal stability of thermistor 18. The arrangement may be used to switch an auxiliary load in an airfield identification beacon circuit.
Patent GB-922249-A (GB)
Title: Improvements in or relating to road resurfacing and repair plant
Inventor: INGHAM KENNETH ROBERT
IPC: E01C23/14
Filed: 1960-10-24
Abstract: 922,249. Road-surface heaters. MUNICIPAL APPLIANCES CO. Ltd. Jan. 24, 1962 [Oct. 24, 1960], No. 36346/60. Class 107. Road surface heating unit 11 comprises at least one infra-red burner 11a, the burners preferably being disposed with their cones of effectiveness overlapping to achieve uniform heating of the road surface. A shroud 14 comprising two parts pivotable about a common axis is disposed above the burner units.
Patent GB-1528394-A (GB)
Title: Loudspeaker systems
IPC: H04R1/28
Filed: 1978-02-27
Abstract: 1528394 Loud-speaker enclosures Z M ZENKTELER 27 Feb 1978 [4 Sept 1975] 36420/75 Headings H4J and H4X A loud-speaker enclosure in a room has vents in its front wall substantially at any one or any two or any three or all four of the sets of distances D/2 and D/3, D/3 and D/5, d1/2 and d1/3, d2/2 and d2/3 where D is the distance between the floor and the ceiling, d1 is the distance from the floor to the centre of the loud-speaker and d2 is the distance from the ceiling to the centre of the loud-speaker. Other vents may be at distances D/6, D/7... d1/4, d1/5 ... d2/4, d2/5. The enclosure may be a reflex enclosure, a column, a pipe closed at one end, a horn or a baffle. The loud-speaker may be mounted in the enclosure vertically, horizontally or at an angle.
Patent GB-886153-A (GB)
Title: Improvements in or relating to apparatus for measuring small d.c. voltages
IPC: G01R19/18
Filed: 1960-10-24
Abstract: 886,153. Voltmeters. KNICK, U. Oct. 24, 1960 [Oct. 24, 1959; April 23, 1960; May 14, 1960], No. 36474/60. Class 37. [Also in Group XL (c)] In a D.C. voltmeter the voltage to be measured is applied to a transistor chopper amplifier whose output is rectified and applied to a measuring instrument. Two poles of a D.C. source A<SP>1</SP>, A<SP>2</SP>, Fig. 1, are connected to the collectors of transistors C, D. The base collector circuits are energized by an A.C. control voltage so that when one transistor is conducting the other is not. The rectifier F may be a transistorized switch synchronized with the convertor, Fig. 2 (not shown).