baber/WOPTO huggingface dataset:
Patent GB-347564-A (GB)
Title: Improvements in, and relating to, rock drills and like fluid pressure operated machines
IPC: B25D9/18
Filed: 1930-09-12
Abstract: 347,564. Valve-gear for percussive tools. RAYNER, G. H. T., 14, Broomhall Road, and RAYNER, P. T., 37, Ashland Road, both in Sheffield. Sept. 12, 1930, No. 27336. [Class 122 (ii).] In rock drills and like percussive tools of the kind having a fluidactuated, auxiliaryexhaust valve, the main exhaust being controlled by the piston and the inlet by a separate valve, the auxiliary - exhaust chamber 10 is located between the main-valve chamber 9 containing an oscillating, flap-valve 12 and the cylinder 2, and is provided with two auxiliary-exhaust valves 15, 16 which are arranged in the path of the fluid passing from the inlet ports 13, 14 to the cylinder inlet and auxiliary-exhaust ports 7, 8. The valves 15, 16 work in contact, engage seats 17, 18, and are operated by the release.
Patent GB-937523-A (GB)
Title: Collapsible shopping basket
IPC: B62B1/12
Filed: 1960-08-06
Abstract: 937,523. Collapsible hand trucks. B. WASSERMAN. July 25, 1961 [Aug. 6, 1960], No. 27336/60. Class 108(1). A collapsible parcel carrier comprises a rigid wire-mesh back having a wheeled axle b 2  secured thereto, the front and sides B 1  being formed by U-shaped rods b 4  pivoted to the back and held in spaced relationship by apertured strips b 5 . The ends of the U-shaped rods b 4  forming the front and sides are looped around the horizontal wires in the back to form hinges. A handle a 2  is secured by rivets a 1  to the top wire frame and a rod a 3  connecting the lower ends of the handle supports the lowermost U-shaped rod b 4 . When collapsed the rods b 4  hinge upwardly and lie in superposed relationship against the back of the carrier.
Patent GB-680911-A (GB)
Title: Improvements in television transmission systems, in particular for use with low illuminations of the scene to be transmitted
IPC: H04N5/235
Filed: 1949-10-25
Abstract: 680,911. Television. RADIO-INDUSTRIE SOC. ANON. Oct. 25, 1949 [Oct. 26, 1948], No. 27390/49. Class 40 (iii). The target electrode of a picture, signal generating tube is left unscanned between two consecutive scanning periods for a time corresponding to a whole number of times the duration of each of these scanning periods. By this means the photo-sensitive elements of the target may be fully charged under low-illumination conditions of the scene to be transmitted. In the arrangement shown, the electron beam of the picture-signal-generating tube 2 is normally suppressed by means of a negative potential applied to the control electrode 1 and is arranged to be " switched on " during the desired scanning periods (i.e. during every frame scanning period) by means of a positive potential also applied to the electrode 1 and generated by means of a cathode-coupled multivibrator including valves 21, 25. The operation of the multivibrator is controlled by frame synchronizing signals from generator 3 after frequency division in two successive pulse-dividing circuits each of which comprises a condenser 8 (8<1>), the charge on which is arranged to trigger a blocking oscillator 12 (12<1>), the second blocking oscillator supplying a triggering pulse to the multivibrator.
Patent GB-1220283-A (GB)
Title: Dehydrogenation of alkylated aromatic hydrocarbons
IPC: C07C5/333
Filed: 1968-06-10
Abstract: 1,220,283. Dehydrogenating alkyl aromatics. UNION CARBIDE CORP. 10 June, 1968 [16 June, 1967], No. 27407/68. Heading C5E. Alkenyl aromatics, particularly styrene, are obtained from corresponding alkyl aromatics by an endothermic dehydrogenation process carried out at 500-700‹ C. in the presence of steam and in the absence of oxygen, chlorine or chlorineliberating material, the process taking place in at least one high nickel-containing stainless reactor. Such steel is defined as containing inter alia 17-20 wt. per cent Cr and 8-13 wt. per cent Ni, suitable steels being types 304 and 347. A plurality of reactors may be used, at least one of them (e.g. the first) being constructed of such steel. Heat exchanger(s) may also be of this type of steel. When more than one reactor is used, the effluent from each reactor may be reheated before entering the next. A conventional catalyst may be present, e.g. Fe 2 O 3 / K 2 CO 3 /CrO 3 , MgO/FeO/K 2 CO 3  or Al 2 O 3 /SiO 2 /N 1.
Patent GB-385375-A (GB)
Title: Improvements in or relating to control gear for marine machinery
IPC: G08B9/00
Filed: 1931-10-02
Abstract: 385,375. Starting, stopping, and reversing. WAUGH, G., 26, Ashkirk Drive, Mosspark, Glasgow. Oct. 2, 1931, No. 27419. [Class 7 (v).] In marine Diesel or other engines the engineroom telegraph, the reverse mechanism, and the start-and-stop gear are electrically interlocked to prevent starting in the wrong direction. An electrically-operated latch 2 engages the controlling lever of the engine, and is connected to two circuits A, B which are controlled jointly by the engine telegraph and the reversing-gear. When the telegraph and reversing-gear are in disagreement, a current passes through one or the other of the circuits and holds the latch 2 in action. The lever 1 is then locked to prevent starting. The telegraph dial carries segmental contacts 5, 6 and a switch arm 3. Putting the central contact 4 in communication with the contact 5 or 6 closes the circuit A or B. The reverse shaft 10 actuates an arm 9 which controls the contacts 8, 7 associated with the circuits A, B. A switch 12 is arranged in the circuit and is open except when the lever 1 is in the closed position. This permits movement from the start to the stop position without interference by the latch.
Patent GB-995705-A (GB)
Title: Arrangement of a telegraphy circuit for double-current traffic
IPC: H04L25/24
Filed: 1963-07-11
Abstract: 995,705. Telegraphy. TESLA NARODNI PODNIK. July 11, 1963 [July 30, 19621, No. 27492/63. Heading H4P. An output circuit for providing double current telegraph signals comprises two transistors and includes means for preventing an excessive voltage on the transistors. Such excess of voltage, or an open circuit line, can be indicated. The transistors T 1 , T 2  and resistors R 1 , R 2  form the arms of a bridge circuit, the batteries TB one diagonal and the telegraph line R z  the other diagonal. Double current signals are obtained by variation of the base voltages. To prevent excessive voltage on the collectors the line R z  is shunted by diodes D 1 , D 2  which are biased to TB volts. A relay P is energized if either D 1  or D 2  conducts, thereby indicating a fault in the circuit or an open circuit of line R z .
Patent GB-478809-A (GB)
Title: Improvements in or relating to free-wheel hubs with coaster brakes
IPC: B62L5/04
Filed: 1937-10-11
Abstract: 478,809. Coaster hubs. FICHTEL & SACHS AKT.-GES. Oct. 11, 1937, No. 27538. Convention date, Oct. 12, 1936. [Class 136 (ii)] In a coaster hub provided with a jamming- roller driving-clutch carried on a screw sleeve adapted to be traversed along the driver by means of a screw thread thereon, the driver is connected with the screw sleeve by a torsion spring, which tends to rotate the sleeve in the direction of forward rotation of the wheel and is stressed by forward driving, while on commencement of free-wheeling the spring unwinds to rotate the screw sleeve and couple the driving-clutch with a non-rotatable part, whereby a frictionless operation is obtained. The driver 7 is provided with a threaded extension 6 engaging a screw sleeve 10 having eccentric recesses to receive clutch rollers 11, which are held in cavities in a cage 12. A helical torsion spring 13 is fixed at its ends to the sleeve 10 and driver 7 respectively, and these members are formed respectively with coupling teeth 24, 23. In the freewheeling position shown, teeth 21 on the cage 12 engage teeth 20 on the slidable brakeexpanding cone 17, the cone 17 and the brake sleeve 15 having projections or dogs engaging a slot 18 in the fixed expanding-cone 16 to prevent rotation. On forward driving, the cage 12 is temporarily held by the teeth 20, 21, and the sleeve 10 rotates and applies the roller clutch 11 to rotate the hub 5. The cage 12 thus becomes disengaged from the teeth 20 and slides to the right, with the sleeve 10 screwing along the driver 7, until the teeth 23, 24 are engaged, the spring 13 being stressed by the relative rotation of the sleeve 10 and driver. On free-wheeling, the sleeve 10 is screwed to the left by the stressed spring 13 to open the clutch 23, 24 and close the clutch 20, 21.
Patent GB-275713-A (GB)
Abstract: 275,713. Peter, L. H., and Westing- house Brake & Saxby Signal Co., Ltd. May 10, 1926. By solid unidirectional conducting devices.-In rectifiers of the type in which the rectifying element consists of a body of metal having a layer of metallic compound formed thereon, the element is made in the form of a hollow member to afford extended contact area and improved cooling. The element may consist of a copper cylinder 1, Fig. 1, having a coating 2 of cuprous oxide produced as described in Specification 257,305, [Class 82 (ii), Washing granular &c.], and surrounded by a layer of lead foil 3 and copper tape 4, graphite being interposed between the coating and the lead foil to improve the contact. For use on higher voltages several oxide-coated copper cylinders coaxially disposed may be employed, the copper forming the outer cylinders being electrolytically deposited on the oxide coating. In another form, Fig. 3, a copper cylinder 12 having an oxide coating 13 is disposed in a metal casing 16 containing mercury which is caused to make contact with the coating 13 with any desired pressure by means of a spring or weight-loaded piston. Alternatively, the container may have an upward extension containing a column of mercury to afford the desired pressure. Cooling is effected by inducing or forcing oil or air through the cylinder 12, and the cooling fluid may be circulated through an external radiator. Any desired number of elements may be connected in series or parallel, two being shown in series in Fig. 3. Several rectifying elements in the form of oxide-coated' copper tubes 27, Fig. 5, connected in parallel may be immersed in mercury in a container 28 having end spaces 34, 36 communicating with the tubes, cooling fluid such as air or oil being circulated as indicated by arrows. Alternatively, the rectifying element may be in the form of an oxide-coated wire wound in a helix and disposed in a mercury-filled container to afford connections in the manner above described.
Patent GB-1203329-A (GB)
Title: Improvements relating to chair assemblies
Inventor: OSBECK GUNNARI INGEMAR SIGVARD
IPC: A61G15/00
Filed: 1968-06-11
Abstract: 1,203,329. Seats. CAN-CAN A.B. 11 June, 1968 [30 June, 1967], No. 27595/68. Heading A4J. The seat frame 8, of a reclinable dentist's chair, is pivotally supported, at 9, on the head 10 of a cantilever arm 11, projecting from slide 25, movable along a horizontal guide 26, which is fixed to a carriage 33 running on vertical guides 36. Motor 30 drives screw-threaded shaft 29, to move slide 25 along guide 26. Hydraulic or pneumatic ram 39, 41 controls the position of carriage 33, on rails 36. Backrest 2 and legrest 3 are linked, through armrests 14 and levers 15, 16, so that the rests 1, 2 and 3 are moved conjointly between sitting and lying positions. This movement is produced by motor 22 rotating screw-threaded shaft 21 in nut 20, trunnioned in head 10. Motors 22 and 30 are run simultaneously, so that, as the patients head is lowered rearwardly by the backrest 2, the chair is displaced forwardly, thus counteracting the rearward horizontal component of the lowering movement. Part 3<SP>1</SP> of legrest 3 simultaneously slides in guide 17<SP>1</SP>, fixed to head 10. Guide 26 may be inclined to the horizontal.
Patent GB-1508867-A (GB)
Title: Reference pattern zeta potential measurement apparatus and method therefor
IPC: G01N27/26
Filed: 1975-07-01
Abstract: 1508867 Measuring zeta potential KOMLINE-SANDERSON ENG CORP 1 July 1975 [19 July 1974] 27744/75 Heading G1U The zeta potential of particles in a fluid is found by subjecting a fluid sample to electro-phoresis, forming a display of the resulting particle movement, superimposing a variable scan rate pattern on the display, adjusting the scan rate until the pattern moves at the same rate as the particle display, and using the scan rate control as an indication of zeta potential. In Fig. I the sample is pumped into a cell 10 where it is illuminated by light supplied via fibres from a source 14. An electric field is applied across the cell, and the particles are viewed in a vertical plane by a sensor 18 such as a TV camera. The particles are displayed on a monitor 20, on which a pattern e.g. of vertical lines, is also displayed. This pattern is generated at 28, and the rate at which it scans is manually adjusted at 32 to be the same as the particle movement rate. The scan rate is automatically adjusted according to the voltage across the cell and the sample temperature, these factors being weighted in data module 22 before being supplied to the pattern generator. The zeta potential is found from the manual setting at 32 when the pattern and particle movements are the same, a VCO (not shown) being connected to the manual control and feeding a digital read-out 26. The temperature or conductivity may also be displayed on this read-out.  Details are given of the cell construction, Fig. 2 (not shown), a control panel, Fig. 5 (not shown), and the pattern generation and compensation, Fig. 4 (not shown).
Patent GB-277602-A (GB)
Abstract: 277,602. Clavel, R. Sept. 17, 1926, [Convention date]. Fibres, treating; yarns, &c., treating with liquids.-Artificial silk goods are weighted by treatment in a bath which contains together two or more weighting agents, which normally interact to form an insoluble substance, precipitation being avoided by imparting to the bath a sufficient acid concentration or by the addition of protective colloids. A protective colloid may be applied to the material before it is passed through the weighting bath. Two or more weighting baths containing such mixtures may be used successively, or other weighting treatments may precede or follow the passage of the material through a bath containing such a mixture. Treatment in the bath may be followed by treatment in a bath having an alkaline reaction. When two or more weighting baths are used, intermediate neutralization or washing is unnecessary.
Patent GB-840926-A (GB)
Title: High temperature high pressure apparatus
IPC: B01J3/06
Filed: 1956-09-11
Abstract: <PICT:0840926/III/1> High-temperature high-pressure apparatus comprises a pair of opposed dies, means for exerting pressure against at least one of the dies, a layer of insulation between one of the dies and its associated pressure means, an electrical connection to each of the dies, the opposed outer faces of the dies being recessed to provide a cavity, an electrical and thermal insulating member in contact with each die, a pressure-resisting member adjacent each insulating member, the pressure-resisting members forming a central aperture between the dies adapted to contain an object to be subjected to high-temperature high-pressure conditions, and a layer of insulation between adjacent outer faces of the pressure-resisting members.  In Fig. 2 each die is provided with a conical recess in which is positioned a frusto-conical insulating member 24 and pressure-resisting member 25, a layer of insulation 26 being provided between the members 25.  A reaction vessel comprising a hollow conductive cylinder 30 surrounded by an insulating cylinder 32 and surmounted by conductive discs 29 is arranged within the central aperture in members 25 and is spaced from the dies by insulating washers 34 surrounded by conductive rims 35.  In operation pressure applied to the dies may produce a pressure of over 40,000 atmospheres in the reaction vessel which may be heated simultaneously to a temperature of over 1000 DEG  C. by passing an electric current through it.  Specification 830,209 is referred to.
Patent GB-344870-A (GB)
Title: Improvements in driving gear for use with internal combustion engines wherein liquid fuel is injected into the combustion chamber
IPC: F02B75/02
Filed: 1929-09-13
Abstract: 344,870. Driving-gear. SCHINKE, E., 25, Dublinerstrasse, Berlin, and HOPKINS, S., Parkside House, Wise Lane, Mill Hill, London. Sept. 13, 1929, No. 27894. [Class 7 (ii).] In a Diesel or semi-Diesel engine, dwell is obtained at the ends of the piston stroke either by articulating the connecting-rod 18, Fig. 1, to a second connecting- rod 14, which may be a pump rod, or by placing a link 22, Fig. 4, between the connecting-rod big-end and the crank pin; the gudgeon 20 between the link and rod is constrained to follow a cam path 21. The cam may be adjustable in position.
Patent GB-834513-A (GB)
Title: Cyclo-octanone oxime hydrochlorides which are liquid at room temperature, and a process for their production
Inventor: SCHICKH OTTO VON
Filed: 1958-09-01
Abstract: The invention comprises cyclo-octanone oxime hydrochlorides, which are liquid at room temperature, and which contain 1.4 to 2 mols. of hydrogen chloride, in combined form, per mol. of oxime; and also the production of said oxime hydrochlorides by passing gaseous hydrogen chloride, diluted if desired with nitrogen, air or hydrogen, into the oxime in the liquid state (working-temperature between 42 DEG  and 100 DEG  C.) or into a solution of the oxime in the end-product (working-temperature 20 DEG -100 DEG  C.).  The process may be carried out in a pressure-vessel lined with silver, tantalum, or polymeric fluorinated hydrocarbons.  The liquid oxime hydrochlorides are particularly suitable for molecular re-arrangement, by means of sulphuric acid, into eta-caprylic lactam.  In Example 4, hydrogen chloride is led into fused cyclo-octanone oxime, while stirring; the initial temperature being 45 DEG  C.  There is obtained a liquid oxime hydrochloride which contains 1.94 mols. of combined HCl per mol. of oxime.  This oxime hydrochloride is added, while stirring, into a solution, preheated to 120 DEG  C., of eta-caprylic lactam in sulphuric acid; and additional sulphuric acid is added at the same time.  The cooled reaction-product is poured on to ice, and neutralized with caustic soda solution.  The crude lactam, which is deposited, is separated, and distilled in vacuo.  The lactam may be used for the manufacture of polyamides (see Group IV (a)).ALSO:A colourless polyamide (melting-point 195 DEG  C.) is obtained by heating, at 260 DEG  C. for 8 hours in a nitrogen-atmosphere, a mixture of 100 parts of eta-caprylic lactam and 5 parts of omega-aminocaprylic acid.  The eta-caprylic lactam is prepared by the action of sulphuric acid on liquid cyclo-octanone oxime hydrochloride (see Group IV (b)); and the omegaaminocaprylic acid is obtained by saponifying eta-caprylic lactam.
Patent GB-345278-A (GB)
Title: Improvements in or relating to methods of and apparatus for producing rhythm bands
IPC: G04F5/02
Filed: 1929-09-14
Abstract: 345,278. Educational appliances. BLUM, C. R., 54, Badenschestrasse, Schoneberg, Berlin. Sept. 14, 1929, No. 27999. [Class 146 (ii).] Relates to the production of rhythm bands bearing notes, words, Fig. 7, or the like, and adapted to be moved at constant speed past an index mark, so that an artist may reproduce the words & c. which correspond to the marks on the band, in rhythmic agreement with the original sounds. The timing and duration of each pulse of the original speech &c. are recorded on a blank band 1, Fig. 4, which is moved with constant speed past a window 4 illuminated by a lamp 24, by means of two transversely arranged marking points 46, 47, Fig. 8, electromagnetically operated from two keys which are depressed by the operator so that strong and weak pulses are recorded in separate lines. A " rhythmogram " is thus produced, the rhythm bands being obtained by writing in the words at corresponding spacial distances, either on the same, or on a blank, band. For this, the apparatus described in Specification 341,844 may be used. When the marking device, Fig. 8 (which has an inked ribbon automatically operated electromagnetically), is detached from the band-moving device, Fig. 4, the latter device may be used for displaying a finished rhythm band. The band-moving device is fitted with a speedometer, and with a resistance for controlling its electromotor 17. Specifications 441/04, [Class 88, Music &c.], 13235/09, 105,938, [both in Class 88 (ii), Music &c.], 339,941, [Class 40 (iii), Telegraph, Electric], and 341,845 are also referred to.
Patent GB-1275624-A (GB)
Title: Air-compressing four-stroke reciprocating internal combustion engines
IPC: F02D21/08
Filed: 1969-06-03
Abstract: 1275624 Fluid-pressure servomotor systems KLOCKNER-HUMBOLDT-DEUTZ AG 3 June 1969 [5 June 1968] 28060/69 Heading G3P [Also in Division F1] A throttle valve 17 in the exhaust pipe 16 of an I. C. engine 13 is actuated by the output of an additional pumping element in the engine fuel injection pump 15 acting on a piston 21. The piston cylinder 19 is connected to the pump inlet through a duct 23 containing a throttle 22, the pressure downstream of the throttle acting in the piston spring chamber. The position of the valve is dependent on the pump output and therefore the engine load and an hydraulic damper 28 stabilizes the valve in relation to the pump output pressure pulses.
Patent GB-1171963-A (GB)
Title: Improvements in or relating to Foundry Moulding Sand Composition
Inventor: STARR CLIVE
IPC: B22C1/26
Filed: 1967-06-19
Abstract: 1,171,963. Foundry-moulding sand composition. BRITISH NON-FERROUS METALS RESEARCH ASSOCIATION. 19 June, 1968 [19 June, 1967], No. 28281/67. Addition to 1,087,767. Heading C3N. A foundry-moulding sand composition comprises: (a) a particulate refractory material; (b) an aqueous solution of sodium silicate; (c) 0À25-5% wt., based on (a) of an organic material; (d) ferrous sulphate; and (e) a metal fluoride. (a) May be e.g. SiO 2 , ZrSiO 4 , chrome or olivine sand, or sillimanite; (b) preferably has SiO 2 /Na 2 O from 2-3.3, with viscosity 7-120‹ Twaddle; (c) may be dextrin, starch, or a sugar, e.g. sucrose; (d) may be FeSO 4 .7H 2 0; (e) may be CaF 2 . Also present may be > 50% wt. based on (c) of fine CaCO 3 . Based on wt. of (d), there may be 3-5% (b). The compositions may be set by CO 2  and/or heat, e.g. 160- 250‹ C. At the temperatures encountered during casting, # 1300‹ C., (d) decomposes to give Fe 2 O 3 , which oxidizes (c), and to give SO 3  and H 2 SO 4  which react with (e) to give HF which attacks the silicate bonds between the refractory particles. Other oxidizing agents may be present. The (c), (d), and (e) may be premixed, and then mixed with (a), followed by addition of (b). The pre-mix may contain, in wt. per cent, (c) 65-80; (d) 10-20; (e) 10-20. These ingredients may all pass 200 mesh B.S.I. sieve, 0.25% wt., based on (a), of this premix may be used.