baber/WOPTO huggingface dataset:
Patent GB-1333297-A (GB)
Title: Method and apparatus for making crystalline materials in parti cular diamonds
IPC: B01J3/08
Filed: 1971-01-18
Abstract: 1333297 Diamonds NATIONAL AERONAUTICS & SPACE ADMINISTRATION 18 Jan 1971 [16 Jan 1970] 2242/71 Heading C1A [Also in Division B1] Diamonds are formed by confining graphite in a pocket 28 of an anvil 30, and then directing a pressure front into -the graphite by positioning an exponentially tapering horn 23 so that the small end of the horn is in contact with the graphite and electrically generating a shock wave of sufficient intensity, e.g. by magnetic hammer 10 in the large end of the horn, which shock wave is velocity amplified and concentrated so that substantially all the energy of the wave arrives almost simultaneously at the small end of the horn in contact with the graphite, and this energy is transferred to the graphite, and compresses and heats it to a level sufficient to form diamond. Preferably an initial less intense shock may be generated at the large end of the horn so as to settle and pack the graphite in the pocket. The individual integers of the apparatus are supported as a unit by a lower plate 34, upper plate 36 and threaded rods 40, 42. Plate 36 is perforated at 38 .to permit the passage of the electrical transmission lines -to the magnetic hammer. The shape of the exponential horn is determined by the equation y=Ce<SP>ax</SP> which is rotated about the x-axis of its representative curve to generate the horn. A copper plate 18 is positioned adjacent the large end of the horn, being preferably separated from the magnetic hammer 10 by a sheet 20 of insulating material. The hammer is connected to a voltage source 14 and a capacitor bank 12 by transmission lines 16.
Patent GB-865811-A (GB)
Title: Improvements in or relating to circular saw assemblies
IPC: B28D1/12
Filed: 1958-01-23
Abstract: 865,811. Sawing stone. PASCOE, J. T. Oct. 24, 1958 [Jan. 23, 1958], No. 2257/58. Class 124. A circular saw assembly comprises a thin circular steel blade 1 having peripheral diamond-impregnated-teeth 13 and mounted on a shaft 2 between two grooved flanges 5, 6, between two outer flanges 3, 4 and of intermediate diameter between that of the blade 1 and that of the flanges 3, 4, and having at least two shaftconcentric grooves 14 in the faces adjacent the blade 1, one of greater and one of smaller diameter than that of the flanges 3, 4. Transverse holes are cut in the flanges 5, 6 from the grooves 14 to the opposite faces, the grooved faces having recesses 11, 12 less in diameter than the smallest groove 14. The flange 3 is welded on the shaft 2, and a washer 7 is tightened against the flange 4 by a threaded locking nut 8 for assembly of the saw 1. The flanges 3, 4 have recesses 9, 10.
Patent GB-228201-A (GB)
Title: Improvements in or relating to airships
IPC: B64B1/60
Filed: 1925-01-26
Abstract: 228,201. Upson, R. H. Jan. 24, 1924, [Convention date]. Airships; aerostats; propelling; cars.-An airship is built up with circular transverse rings 2 secured to the interior of a thin metallic covering 1 which is also the gas container, means being provided for building up internal pressure during flight to compensate for increased aerodynamic pressure on the outside of the skin. In large airships longitudinal members 6, also secured to the interior of the metallic covering, extend from end to end of the structure. The frames 2 are braced by chord stays 3 and load wires 4. 5, Fig. 4, in the plane of the ring and two of the longitudinal members are enlarged as shown at 8 to enclose corridors 9 and to provide a support for the engine nacelles 39, 40, 41 and other loads. Beneath portions of the members 8 chambers 12 may be built as shown in Fig. 4<a> and at the forward end of the airship a navigation cabin 38 may be provided'. Transverse girders 10 covered with gas-tight sheet metal 11 connect the members 8, and transverse passages may be formed in one or more to communicate with the corridors 9. The gas field is divided by transverse fabric partitions 22 seamed at 25 to fabric 26 forming the upper portions of air ballonets. The upper edge of each partition 22 is secured' to a frame-ring, and a stiffening ring 23 in the fabric is connected by wires 24 to an adjacent frame-ring in order to space the partitions between the ring bracings. The seams 25 are anchored to the transverse girders 10 by wires. Inflation and relief valves 20 are provided at the top of the airship with baffle plates 21, Fig. 4, for deflecting the incoming gas horizontally, and non-return valves 28 are provided in the ballonet fabric 26 for the escape of air during flight, the ballonets communicating with one another through passages 30 in the girders 10. An additional vent 31 behind a propeller enables the ballonets to be filled initially. The longitudinal members may comprise V-shaped plates riveted to the outer plating as shown in Fig. 8, or they may be built up girders of triangular or polygonal section, that at the top of the airship being enlarged to support a catwalk 7<a>. In a small airship the members 8 may be replaced by simple stiffening-members and the other longitudinal members dispensed with. The ring stays in this case pass through the ballonet fabric to the car suspension cables, and the lower parts of the rings have chord bracing. Planes, arrangement of; steering.-A series of eight radiating pins 32 are braced to the structure of the rear end, and according to the Specification as open to inspection under Sect. 91 (3) (a) elevators 33 are provided on four of these, and rudders 34 on the lower two as described in Specification 253,936. This subject-matter does not appear in the Specification as accepted. Assembling.-To facilitate assembling, a cradle 15 is provided, and cords 17 from a sling 16 are connected to permanent eyelets 18, Fig. 8, in the stiffening members.
Patent GB-1402981-A (GB)
Title: Hydrocarbon conversion
IPC: C10G35/095
Filed: 1974-01-18
Abstract: 1402981 Hydrocarbon conversion MOBIL OIL CORP 18 Jan 1974 [9 Feb 1973] 02372/74 Heading C5E Hydrocarbon conversions are carried out using a catalyst comprising a ZSMÀ5 type zeolite defined by X-ray diffraction pattern having an ultimate particle diameter of 0À005- 0À1 Á as crystallized. The catalyst may contain a hydrogenation/dehydrogenation component such as metals, oxides and sulphates of Groups IIB, VIB, VIIB and/or VIII. Examples describe the transalkylation of benzene and diethylbenzene to give ethylbenzene; the alkylation of benzene with ethylene; the alkylation of benzene with n-heptane or n-octane in the presence of hydrogen; the disproportionation of propylene to ethylene and higher olefins; poor point reduction of a gas oil; and cracking a gas oil with a fluidized catalyst.
Patent GB-1417451-A (GB)
Title: Method of preparing a catalyst comprising metallic catalytic agent adhered to a catalyst carrier
IPC: B01D53/72
Filed: 1973-01-17
Abstract: 1417451 Preparing catalysts for the treatment of exhaust gases NISSAN MOTOR CO Ltd 17 Jan 1973 [8 Feb 1972] 2385/73 Heading B1E A method of preparing a catalyst comprises: impregnating a catalyst carrier with either an aqueous or an alcoholic solution of a catalytic metal compound and an aluminium salt; treating the impregnated carrier, in the absence of any of said aqueous or alcoholic solution in excess of the amount required to impregnate the carrier, with an alkali to neutralize the solution, to convert the aluminium salt into gelled aluminium hydroxide and to fix the catalytic metal compound mixed with the aluminium hydroxide to the carrier; drying said catalyst carrier after treatment with the alkali; and sintering the dried catalyst carrier in an atmosphere of either hydrogen or air at a high temperature. In examples 1-4 the catalytic metal is Pt, the alkali gaseous ammonia and the carrier cordierite; Ex. 5 uses Pd, gaseous ammonia and cordierite; Ex 6 uses Pt, aqueous KOH and cordierite; and Ex 7 a mixture of Pt and Ru, gaseous ammonia, and cordierite. The Al salt in the Examples is variously the chloride, nitrate or sulphate and the sintering temperature 700 or 800C.
Patent GB-124505-A (GB)
Title: Improvements in or relating to Grenades and the like.
Inventor: MILLS WILLIAM
IPC: F42B12/20
Filed: 1916-02-17
Abstract: 124,505. Mills, W. Feb. 17, 1916 Projectile fuses.-Relates to time fuses for grenades or the like, in which a length of cord fuse is provided, such as is described in Specification 2111/15, and consists in the following detail improvements in connexion with the anvil or cap plug and with the securing of the cord thereto. (1) The cord fuse c may be so arranged within the plug a as to be fired at a point away from its end, as shown in Fig. 1. The end e may protrude beyond the plug into the annular space surrounding it. (2) The end of the cord fuse may be secured - within the plug a by denting, swaging, or otherwise working the metal of the plug, so as to grip the fuse directly. (3) Venting holes or grooves such as i, Fig. 3, may be made in the plug so as to extend to a part of the transverse passage unoccupied by the cord fuse. (4) The percussion cap may be mounted in a sleeve k within the plug, Fig. 4, so that the vent may be made by cutting completely through the wall of the plug. The sleeve k may be corrugated. The Provisional Specification describes also the provision of a tubular collar or of a tongued strip of metal of curved cross-section, as means for securing the fuse to the plug. It further states that venting perforations may be disposed transversely in a reduced part of the upper end of the plug.
Patent GB-158265-A (GB)
Title: Improvements in tractors having two pairs of driving wheels
IPC: B62D53/02
Filed: 1921-01-18
Abstract: 158,265. Schneider et Cie. Jan. 30, 1920, [Convention date]. Adjusting fore-carriages. - A tractor comprises front and rear pairs of driving and steering wheels, the motor and gearing being mounted on the frame on the steering wheels while the rear wheels are mounted on a frame jcurnaled on a longitudinal frame member pivoted to the front frame member, the two frames being connected by a pivoted distance member. The tractor is steered by means of an arm on the fork R of the longitudinal frame member K operated by a link from the steering gear P.
Patent GB-638117-A (GB)
Title: A process for the production of vinylidene chloride
IPC: C07C17/25
Filed: 1948-01-27
Abstract: Vinylidene chloride is obtained by reacting trichlorethane with milk of lime in a closed reaction space at 115-125 DEG  C. the product not being separated from the reaction mixture until after the reaction between the trichlorethane and the milk of lime is complete or substantially complete.  The term "trichlorethane" includes both 1,1,2- and 1,1,1-trichlorethane.  The reaction may be rendered continuous by causing the reaction mixture to flow through a series of consecutive chambers which, except for inlets and outlets for the reaction mixture, are closed, the mixture subsequently being passed to a separation zone.  Trichlorethane containing tetrachlorethane as impurity may be used, tetrachlorethane being converted to trichlorethylene from which and other products the vinylidene chloride may be isolated as by e.g. fractional distillation. Specification 534,733 is referred to.
Patent GB-510440-A (GB)
Title: Improvements in or relating to clutches, brakes or the like
IPC: F16D65/14
Filed: 1938-01-26
Abstract: 510,440. Band brakes. TUCKER, W. C. Jan. 26, 1938, No. 2489. [Class 103 (i)] [Also in Group XXIV] In a brake having a flexible arcuate shoe 5 engageable with a drum 1, pressure is applied through two pins 19 adjacent the ends of the shoe, each pin being connected by a short link 14 to a lug 12 at the end of the shoe and by a long link 15 to a lug 13 between the ends of the shoe, the two links 15 crossing one another, so that pressure is applied simultaneously at four spaced points along the shoe. As shown, a pair of lined flexible-steel shoes 5 are employed, the crossed links 15 of each pair have longitudinal slots 16 engaged by a bolt 17 fitted with a spring washer, and a central lug 7 on each shoe has a radial slot 8 engaged by a bolt 9 passing through a circumferential slot in the stationary back plate 4 and fitted with a spring washer. Pressure is applied to the upper pins 19 by plungers 33 slidable in a block 32 mounted on the plate 4 by bolts passing through circumferential slots in the plate 4 and fitted with spring washers. A cylindrical member 38 movable vertically in the block has inclined flats 39 co-operating, through interposed toothed rollers 42, with the inclined ends 40 of the members 33, and is connected by a link 43 to a sleeve 30 which is rotatable on the hub of the plate 4 under the control of a Bowden cable 44. Pressure is simultaneously applied to the lower pins 19 by plungers 23 slidable in a block 20 fixed to the plate 4, each plunger 23 being associated with a separate cylindrical member 24 movable radially in the block 20 and having an inclined flat co-operating, through a toothed roller 25, with the inclined end of the plunger 23, the members 24 being connected to the sleeve 30 by links 29. The shoes are retracted by springs 49.
Patent GB-123149-A (GB)
Title: A New or Improved Pump.
Inventor: MOORES JAMES
IPC: F16N13/10
Filed: 1918-02-12
Abstract: 123,149. Moores, J. Feb. 12, 1918. Multiple-delivery piston pumps; pumps in series; pumps with means for reversing direction of flow; valves, arrangement of.-A pump for lubricating- oil &c. comprises a plunger f, reciprocated in a tubular member e, which is reciprocated in a fixed tubular member a provided with inlet and outlet ports c, d adapted to be brought into register alternately with the port e<2> in the member c. The lower end of the member e can be used as the piston of a second pump supplying the suction side of the main pump through a sight-glass. The plunger and member e are reciprocated by eccentrics driven by pawl-and-ratchet gear. By reversing the drive, the direction of flow of liquid through the pump may be reversed. In another form the member e is oscillated on its axis by a pin-and-slot connexion with the fixed barrel.
Patent GB-765517-A (GB)
Title: Means for and method of making elastic cushion articles
Filed: 1955-01-28
Abstract: 765,517. Moulding foamed latex. UNITED STATES RUBBER CO. Jan. 28, 1955 [Feb. 1, 1954], No. 2615/55. Class 87(2). A mould for setting and vulcanizing framed latex to form a cushion comprises a moulding pan and a closure joined by hinges, finger-like cores extending into the mould cavity and plates extending along the sides of the V between the pan and closure to form a trough and to close the ends of the trough continuously as the parts are swung together. With the hinges 16 at the bottom, latex foam is poured through a hose 21 into the V-shaped trough formed between the mould pan 10 and the cover 11 and is prevented from running out at the sides by the side plates, one of which is shown at 13. As more latex enters, the mould is gradually closed, the cores 12, which project from the cover 11, entering the cavity in the mould pan 10 and the level of the foam rising so that air escapes upwards above its surface without being trapped between the cores to form voids in the vulcanized moulded article. The hose 21 is withdrawn as the mould is finally closed and excess foam, extruded along the edge 22, is removed and transferred either to a new mould or to means for reclaiming the rubber. The mould is held closed by a clasp fixed to flanges 23, 24 and taken to a gelling station and then to a vulcanizing station. In a modification, Fig. 5, cores are carried both by the mould pan 10<SP>1</SP> and the cover 11<SP>1</SP>. The cores may be thinner near their bases so that, though large spaces are formed in the article as desired, the holes at the surface are smaller.
Patent GB-1371313-A (GB)
Title: Apparatus for determining the values of inductive and capacitive  elements of a parallel combination
IPC: G01R27/02
Filed: 1973-01-18
Abstract: 1371313 Measuring capacitance and inductance PENZENSKY POLITEKHNICKESKY INSTITUT 18 Jan 1973 2712/73 Heading G1U The capacitance C and inductance L of a parallel L/C circuit 15, 16 is determined by connecting the circuit in series with a known inductor 19 and applying to the series combination a predetermined succession or ramp and steady voltages to derive two time intervals respectively proportional to C and L. The measuring apparatus comprises a controlled switching circuit 1 for coupling sources 9, 12-14 of ramp and reference voltages to the terminals 10, 11 of the series combination in a required sequence, and a zero detector 20 which provides an output every time the voltage at the junction of the L/C circuit and the known inductor reaches zero. On initiation of the measuring process the switching circuit 1 applies a negative-going ramp voltage to terminal 10 and a reference voltage + E o  to terminal 11. As soon as the first output is obtained from the zero detector 20 the switching circuit connects terminal 10 to earth and terminal 11 to -E o , and simultaneously a gate 34 is opened to allow clock pulses (32) to pass to a counter 36. When the next output is obtained from the zero detector 20 the count is stopped. A fixed interval later (determined by a timer 26) the switching circuit switches again to supply + E o  to terminal 10 and zero voltage to terminal 11, and a further count (35) is also started. When the third output is obtained from the zero detector 20 this further count is stopped. The two counts are proportional to C and L respectively.
Patent GB-524314-A (GB)
Title: Improvements in and relating to thermionic valve oscillators and amplifiers
IPC: H03B5/22
Filed: 1939-01-27
Abstract: 524,314. Valve generating circuits. WIGAN, E. R. Jan. 27, 1939, No. 2798. [Class 40 (v)] In an oscillator or amplifier, in which the amplifying section is backcoupled through a resistance-capacity network in which the phase shift is dependent on frequency, and so proportioned that the shift of frequency round the complete amplifier-network chain is zero at some frequency within the frequency band over which the amplifier gain is high, the frequency of oscillation or selective amplification is adjustable by step switches and the elements are such that the sum of the markings corresponding to the switch positions is proportional to the frequency developed by the oscillator. Increments of frequency may be produced by adding resistance in parallel with resistance in the network or by adding capacity in series with a capacity in the network. With a network as shown in Fig: 8 the frequency generated is proportional to 1/ R 1 R 2  if a resistance R3 is added to the network approximately equal to one half of the output impedance of the amplifier. When frequency is varied by changing capacities C 1  C 2  so that the ratio C 1 /C 2  remains constant, a variable resistance r is provided to correct for changes in the output impedance of the amplifier Fig. 8. The correct adjustment of R 3  or r, Figs. 7 and 8, may be checked by switching in resistances Ra, Rb or impedances Za, Zb when no change in frequency should be produced provided Ra/Rb+p+r=R2C1/R 1 C 1 + R 2 C 2  or Za/Zb=R 2 C 1 /R 1 C 1 +R 2 C 2 . An inductance may be included in the anode circuit of one or more of the amplifying valves to increase the frequency range over which the phase shift is negligible. A potentiometer may be provided across the output of the network to enable the amount of reaction to be adjusted. The amplifiers may be provided with negative feedback Fig. 9 which may be adjusted by resistance 17 to control the amount of reaction. The valve 6 may be a pentode working on a point of inflection of its characteristic to reduce second harmonic distortion. A cathode follower may be interposed between the amplifier output and the feedback path Fig. 10 (not shown). The output may be maintained constant by automatic control as by the use in the feedback path of an element the resistance of which varies with the current flowing. A variable condenser or resistance associated with the network may be provided for trimming or to compensate for temperature changes as well as for changes in the output impedance of the amplifier. The Specification gives a mathematical analysis of the conditions necessary to ensure that the law of frequency addition is obtained and describes resistance and condenser networks to give decade control up to 16 Kc. Specifications 395,596, 489,849 and 497,148 are referred to.
Patent GB-1456434-A (GB)
Title: Elevator control system
IPC: B66B1/32
Filed: 1974-01-21
Abstract: 1456434 Automatic control of elevators HITACHI Ltd 21 Jan 1974 [24 Jan 1973] 02822/74 Heading G3N [Also in Division H2] In a braking control system for an elevator car, braking taking place according to a predetermined pattern, instigation of braking is delayed for a period commencing at the initiation of the deceleration speed pattern signal from generator 4 until the difference between a signal representative of actual motor load (speed or current) and the pattern signal V s  exceeds a predetermined level Vk. Jerk at the initiation of braking for a heavily loaded and hence lower speed car is thus reduced. As shown, when the car is a predetermined distance from a destination floor, detector 3 provides an output initiating the generation of the deceleration pattern signal V s , see Fig. 2 (not shown) and operates relay X to insert resistor 9 in the path between three phase induction motor 7 and supply 1, reducing motor torque from a full to intermediate value. Speed detector 5 mechanically connected to the motor provides an actual speed signal V p  with which the pattern signal V s  is subtractively combined to produce error signal Vi. Not until the pattern signal V s  has so decreased that Vi exceeds Vk as detected in circuit 6 is AND 8 opened to operate relay Y, disconnecting the motor from the supply and coupling it to a D.C. braking rectifier 2 controlling the braking effort, itself being controlled by the error signal Vi controlling the firing angle of thyristors SCR. The pattern V s  and magnitude Vk are so set that the delay before braking is initiated is approximately one quarter of the car's natural vibration frequency on the haulage cable. The delay, dependent on car load, may be extended by insertion of a delay means (not shown) at the output of position detector 3. Modifications:- Separate subtractive combinations of the actual speed, and pattern, signals may take place to provide distinct error signals (Vi 1 , Vi 2 ) Figs. 6, 7 (not shown), to buffer the operation of the phase shifter 12 from that of the dead zone circuit 6. The output of either of pattern generator 4, or speed detector 5, by the insertion of resistor (14), Fig. 9 (not shown), under control of the relay X, may be varied to control the degree of delay. The dead zone circuit 6 may receive a signal (Vi 2 ) Fig. 10 (not shown) derived by subtractive combination of a signal V, a linear decreasing function of the motor current derived by converter (16), and the pattern voltage, initiation of braking being delayed until the combination exceeds Vk.
Patent GB-417021-A (GB)
Title: Improvements in electric heating devices particularly applicable to cooking ovens
IPC: F24C7/08
Filed: 1934-01-27
Abstract: 417,021. Electric stoves. FALK STADELMANN & CO., Ltd., and BICKELL, S. F., 83, Farringdon Road, London. Jan. 27, 1934, No. 2838. [Class 39 (iii).] In an electric cooking oven &c. having interchangeable heating units 1, 2, and 3 with at least three connecting points 15, 16 and 17, the end terminals of a series-parallel switch 11 are connected to three points on units 1 and 2 and to two points on unit 3, the remaining terminal of unit 3 being permanently disconnected. The intermediate tapping 16 of the elements may be unbalanced. The two connected terminals of element 3 may be connected to any pair of the switch busbars 8, 9, and 10.