baber/WOPTO huggingface dataset:
Patent GB-266675-A (GB)
Title: Improvements in acoustic devices
IPC: H04R7/12
Filed: 1926-12-02
Abstract: 266,675. Standard Telephones & Cables, Ltd., (Assignees of Smythe, E. H.). Feb. 24, 1926, [Convention date]. Diaphragms; loud-speakers .-A large direct. acting diaphragm 10 is attached at a point on its surface to an actuating device 11 and provided with supporting means 8 attached to it and positioned intermediate the periphery and the point of actuation so that the periphery is free to vibrate. Fig. 4 shows a string 14 and head 15 method of attaching the diaphragm 10 to its support 8, a flexible washer 16 being interposed between the head and the diaphragm. Alternatively, a screw and a flexible washer may be used. The supports 8 are rounded or knifeedged members so as to permit the diaphragm to have a rolling movement over the supports during vibration so that the oscillations are substantially free. The intermediate supports 8 may be carried by rigid arms 6, Fig. 2, or, alternatively, flexible reeds 18, Fig. 5, may be employed and be attached to the diaphragm 10. In a modification, Fig. 6. the front 20 of the cone is separated from the back 21 and the reeds 22 are so shaped so as to have an obtuse angle instead of an acute angle as in the previous case.
Patent GB-1048081-A (GB)
Title: Improvements relating to induction heating
Inventor: MERRETT John
IPC: H05B6/12
Filed: 1962-08-09
Abstract: 1,048,081. Induction heating coils. HOOVER Ltd. Aug. 7, 1963 [Aug. 9, 1962], No. 30614/62. Heading H5H. An induction heating coil includes two or more sections covering different areas of the surface and electrically connected in parallel. As shown, a coil 10 comprises an inner section 14 and an outer section 15 each of flat annular form wound spirally, in the same direction, from narrow conducting tape with its width perpendicular to the plane of the coil. The ends 16, 17 of section 14 and the ends 18, 19 of section 15 are brought out and are connected, e.g. 16 to 18 and 17 to 19 or 17 to 18 and 16 to 19, so that the two sections are in parallel. The two sections may be wound spirally in opposite directions (Fig. 2, not shown) and may have approximately equal surface areas.
Patent GB-1352265-A (GB)
Title: Plug and socket assemblies for photographic flash cubes
IPC: G03B15/04
Filed: 1971-06-30
Abstract: 1352265 Lamp holders POLAROID CORP 30 June 1971 [30 June 1970] 30656/71 Heading H2E [Also in Division G2] A flash cube socket 6 has a number of spaced fingers 78 extending from a base 76 to define a central space and spaces between the fingers, at least one of the spaces having a re-entrant portion due to a projection on the socket. As shown, the re-entrant portion is obtained by providing grooves 90 along the innermost surfaces of the fingers, which are thereby rendered non-symmetrical. This socket will not take conventional flash cube. A flash cube 5 has the lugs 30 of its cylindrical spindle 26 formed with non-symmetrical crosssections by cutting away a portion of each lug. This cube wil fit the socket of Fig. 5, as well as conventional sockets. The flash cube of Fig. 6 has improved light output; and can then be used with cameras having conventional sockets or with cameras designed to be used only with such a cube, and thus fitted with the socket described.
Patent GB-1507680-A (GB)
Title: Belt loop feeding apparatus
IPC: D05B33/02
Filed: 1975-07-23
Abstract: 1507680 Feeding work for sewing AMF INC 23 July 1975 [24 Oct 1974] 30776/75 Heading DIG Apparatus receiving and guiding belt-loops being fed to a sewing station includes a body member having a flat surface 3 on which one face of the loop is disposed, a side edge 2 positioning a longitudinal edge of the loop, a cantilever spring member attached to the body and acting on the other longitudinal edge, a rake assembly in the form of spaced fingers 4 forcing the loop to lie flat on the surface 2, the spring being mounted on an adjustable shoe 6, pneumatic piston means 13 having a pusher 8 to feed the loop and loop deflector means 9 at the outlet of the device to direct the loop in the same direction for each stroke of the piston means.
Patent GB-1192212-A (GB)
Title: Improvements in Heat Exchangers.
IPC: F22B1/06
Filed: 1967-07-04
Abstract: 1,192,212. Heating steam boiler by hot liquids. BABCOCK & WILCOX CO. 4 July, 1967 [5 July, 1966], No. 30813/67. Heading F4A. In a steam generator having liquid metal, e.g. sodium, flowing through a pressure vessel 10 and vaporizing water flowing upwardly through water tubes 42, the inlet ends of the tubes are provided with restrictors 48A providing a relatively high restriction in the normal direction of water flow and a reduced restriction to flow in the opposite direction. The restrictions may comprise a Venturi tube with a long converging section and short diverging section. Similar restrictors 48B are placed at the outlet ends of the tubes and arranged to produce small restriction in the normal flow but high restriction on reverse flow. The sodium, supplied through inlets 43, 46, is maintained at a level 15 and the tubes 42 extend from a feed water chamber 32 to a vapour collector chamber 22 with a delivery pipe 24 and control valve 25. If a pipe 42 bursts, the increase in pressure in the vessel 10 operates a controller 50 to close valves 25, 36, and open a valve 40 in a drain pipe 38 for the tubes and a valve 60 to supply pressurized nitrogen to chamber 22 to force the water out of the tubes 42. The restrictions 48B ensure equal distribution of the draining liquid through the tubes 42 and prevent excess liquid or gas flowing to the failed tube. The decreased resistance of restrictors 48A on reverse flow assists in draining of the tubes. Alternative forms of the restrictors are shown in Figs. 3 and 4 (not shown).
Patent GB-952965-A (GB)
Title: Improvements in or relating to surface-type heat exchangers
Inventor: SKYRIK MIRKO
IPC: F28D7/06
Filed: 1962-08-10
Abstract: 952,965. Tubular heat-exchangers; surface condensers. PRVNI BRNENSKA STROJIRNA, ZAVODY KLEMENTA GOTTWALDA, NARODNI PODNIK. Aug. 10, 1962, No. 30836/62. Heading F4S. In a tubular heat-exchanger, e.g. a water heater for a central station heat-exchange plant, a header 1, having connections 2 for the inlet and outlet of water to be heated, is located between a pair of tube systems which it carries, each tube system being located within a shell 3 having a connection 6 to a steam supply and a condensate outlet 7, the steam being condensed in the heatexchanger. The header 1 is partitioned so that the water being heated follows the path indicated by arrows 8, 9, 10. The tube assemblies may be of straight tubes 4, or U-tubes 5. The shells 3 are mounted on sliding supports 12 enabling the shells to be withdrawn when the tubes are to be cleaned.
Patent GB-270588-A (GB)
Title: Combined hand printing apparatus and paper cutter
IPC: B41L47/46
Filed: 1926-12-06
Abstract: 270,588. B³chi, A. Dec. 6, 1926. Rotary machines.-An apparatus for printing headings on stationery, which may be also adapted as a cutter for trimming photographs &c., comprises a box fitted with a drawer 6, the bottom 1 and top 5 of the box being extended beyond the side 3 to form a guide for a slide 8 to which is adjustably connected by a nut 13 and screw 12 an arm 9 fitted with a screw-bolt 16 on which can be mounted a printing-roller 14, Fig. 4, or a roller fitted with a circular cutter 29, Fig. 8. The slide 8 is restrained by ledges 7, and to the roller 14 detachable rubber type 15 is secured. As the slide 8 is traversed, the roller 14 is rotated by contact of a toothed wheel 19 with a strip of felt, rubber, or the like 20. A detachable inking-roller 23 is mounted in a slot 21 in the arm 9, and this may coact with a horizontal pad placed above it and supported by upright brackets on the box.
Patent GB-822466-A (GB)
Title: Improvements relating to sparking plugs
IPC: H01T13/36
Filed: 1955-10-28
Abstract: 822,466. Sparking plugs. JET IGNITION CO. Inc. Oct. 28, 1955 [Oct. 28, 1954], No. 30915/55. Class 7(4) A gas-tight seal is provided between a ceramic insulator 22 and a soft metal shell 12 by means of a ridge formed either on the shell or the insulator, the metal being deformed so as to conform to the contour of the insulator when pressure is applied to the latter by screw means 32. As shown the ridge 28 is formed on the shell, in Fig. 3 (not shown) the ridge is on the insulator. Electrodes 18, 20 are disposed in an internal ignition chamber 16 communicating with the cylinder by means of passages.
Patent GB-224107-A (GB)
Title: Improvements relating to the operation of signal or token releasing instruments for block section working of railway lines
IPC: B61L23/12
Filed: 1923-12-08
Abstract: 224,107. Tyer & Co., Ltd., and Leake, F. W. Dec. 8, 1923. Staff, tablet, and ticket systems; combined electrical and mechanical systems; signalling in. struments.-An electromagnet 42 for releasing a lock on a token instrument or signal or other device, is in a circuit which is prepared by a weak direct current over the line wire and is completed by a stronger direct current impulse. A weak impulse sent from station B over the resistance 3 and line wire 10 energizes a non- polarized relay 11 and a polarized relay 19. Relay 11 closes contacts 13, 14 but does not open contact 1'5 against its spring when a weak impulse is received. A circuit is thus completed from battery 30 to relay 3@ and bell 33. Relay 31 is a stick relay and when a stronger current is sent from station B by cutting out resistances 3, the relay 11 opens contact 15 and closes a local circuit including battery 3, armature 35, relay 31 and bell 33. By the change over switch 37 the bell 33 is cut out and the lock magnet 42 is put in circuit. A strong impulse not preceded by a weak impulse causes contact 15 to be opened before relay 31 is energized to close contact 35, so that the relay 42 is not energized.
Patent GB-872776-A (GB)
Title: Improvements relating to variable d.c. transformer circuits
Inventor: WHITE ERIC LAWRENCE CASLING
IPC: G05F1/52
Filed: 1956-10-11
Abstract: 872,776. Automatic voltage control systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 4, 1957 [Oct. 11, 1956], No. 30930/56. Class 38 (4). A variable direct current transforming circuit arrangement comprises two alternately-conducting switches 4, 6 and an inductive storage means 5 the transformation ratio of the arrangement being governed by the ratio of the conducting times of the switches. An inductor 5 receives energy from a D.C. source 1 when a valve 4 is conducting whilst the change of potential of the cathode of the valve 4 when it is cut off causes the valve 6 to conduct, whereby the energy in the inductor 5 is discharged into a load 3. The ratio of the input volts E 1  to the output volts E 2  is adjustable by means of a potentiometer 9 connected across the load 3, the voltage tapped off this potentiometer being compared with a reference voltage E, the differing being fed to a switching generator 7 by way of an amplifier 8, the switching generator 7 controlling the on and off periods of the valve 4. The generator 7 may be a valve or transistor multivibrator whose output controls the grid potential of the valve 4 and the reference voltage E may be obtained by way of a Zener diode. The transforming arrangement may have a step-up ratio by arranging the valve 4 in shunt to the supply instead of in series.
Patent GB-926821-A (GB)
Title: Underground disposal of radioactive liquids or slurries
IPC: G21F9/24
Filed: 1959-09-09
Abstract: 926,821. Disposal of radio-active waste material. CONTINENTAL OIL CO. Sept. 9, 1959 [Sept. 24, 1958], No. 30839/59. Class 39 (4). [Also in Group XXI] A method of disposal of radio-active waste material in the form of a liquid or slurry comprises drilling a well-bore into an impermeable rock formation 2, the well having a casing 1 sealed at 3, 4 in the upper and lower formations, forming non-vertical and preferably horizontal fractures 10, 11, 10<SP>1</SP>, 11<SP>1</SP> in the formation 2, injecting the radio-active waste into the fractures, and injecting a sealing material, e.g. cement, to seal the waste within the formation 2. The easing 1 is perforated at 5 and the rock fracturing may be performed by known techniques, e.g. gun perforating followed by injection of a fracturing fluid from a fracturing apparatus 8 through a pipe 7. The fracturing fluid may consist of the radio-active waste and be contained in a reservoir 9. If other fracturing fluid is employed it is withdrawn prior to the injection of the radio-active waste. To determine the extent of a fracture and prevent it extending outside the formation 2 a number of check wells may be disposed around the well-bore (Figs. 2, 3, not shown), the check wells having radioactivity detecting devices.
Patent GB-1394987-A (GB)
Title: Containers
IPC: B65D5/4805
Filed: 1971-07-02
Abstract: 1394987 Cartons SOUTHALLS (BIRMING- HAM) Ltd 3 July 1972 [2 July 1971] 31071/71 Heading B8P A cardboard carton for sachets 12 has an internal dividing wall 11 forming two wedge shaped compartments the sachets being withdrawn through an opening 14. The dividing wall is part of the carton blank (Fig. 3, not shown), and its continuation forms an end wall 17 of the carton beneath the opening 14. To facilitate withdrawal of the sachets a part 15 of the top wall 13 is detached adjacent the opening 14.
Patent GB-1400503-A (GB)
Title: Electrical connector
IPC: H01R13/631
Filed: 1972-07-03
Abstract: 1400503 Edge connectors BUNKER RAMO CORP 3 July 1972 [2 July 1971] 31085/72 Heading H2E A connector comprises a coacting mating plug 10 and receptacle 32 the plug having aligned plug contacts 12 mating with (bifurcated) contacts 48. Either the plug or receptacle has at least one guide pin 28, 30 mating with a socket 50, 52 on the receptacle or plug, their coacting guide surfaces being longer than the plug contacts 12. As shown the plug has a solid dielectric body into which the contacts 12, having soldering leads 16 or 18, are moulded. Holes 26 can be used for mounting. Guide pin 30 is broader than guide pin 28 (Fig. 4, not shown) and both pins have webs 29, 31 thinner than contacts 12 bearing against and supporting the closest adjacent contact. The pins 28, 30 fit into corresponding sockets 50 and 52 in receptacle 32 which is also a single moulded body having a central channel 34 and slots 42 for holding bifucated contacts 48. The length "L-L" of the coacting surfaces of pin 30 and socket 52 is greater than the length "L" of plug contacts 12.
Patent GB-1108323-A (GB)
Title: Improvements in or relating to magnetic powder clutches or brakes
IPC: F16D37/02
Filed: 1965-07-21
Abstract: 1,108,323. Electromagnetic couplings. ETABLISSEMENTS ED. JAEGER. 21 July, 1965 [21 July, 1964], No. 31100/65. Heading H2A. In a magnetic powder clutch or brake the field magnet is formed by two plates 4 having a winding 5 between them and laminations disposed in radial grooves or slots in the plates such that the laminations and grooves or slots are interconnected and connected to the plate 4 by a weld seam 13 which extends over the periphery of the plate. The magnetic powder is contained between the armature 2, plates 4 and the gaskets 8. The field coil 5 may be encapsulated to form a structure for positioning the plates 4 which are secured together and to end plates 7 by bolts (not shown). The laminations (12, Fig. 3, not shown), which are mounted in the grooves on the plates, are secured to the outer periphery of the plates by weld 13 made in an argon atmosphere without any added metal. The armature 2 may be provided with laminations which are welded on the side surfaces.
Patent GB-1215334-A (GB)
Title: Improvements in or relating to electrical circuits for simulating diode action
Inventor: LUETZE W O
IPC: H03K17/60
Filed: 1968-06-26
Abstract: 1,215,334. Transistor switching circuits. INTERNATIONAL BUSINESS MACHINES CORP. 26 June, 1968 [1 July, 1967], No. 31125/68. Heading H3T. A circuit for simulating a diode action comprises first and second transistors T1, T2 having a common coupling between their bases and one pole of a source of current 4, the emitters of the first and second transistors T1, T2 acting as the cathode and anode connections of the diode, the collectors of the transistors being coupled to the one pole of the source of current 4 and the emitter of transistor T2 being connected to the other pole of the source 4. The bases of T1, T2 are supplied with constant current via resistance R2. In the reverse bias state of the diode simulation terminal 1 is more positive than terminal 2. As the voltage on terminal 1 is lowered T1 conducts until both T1 and T2 finally carry approximately the same currents so that the circuit becomes forward biased. In a modification (Fig. 2, not shown), the resistors R1 and R3 are removed and the collector of T2 is connected to its base to provide negative feedback so that its base cannot operate in saturation. This negative feedback suppresses fluctuations at point 5 and reduces the differential internal resitance of the circuit. In a further modification (Fig. 6) resistor R1 is chosen so that transistor T3 is not operated too saturated to avoid long response time due to the storage of minority carriers stored in the base. Resistor R2a enables the point of intersection of the current voltage characteristic (Fig. 8, not shown) with the current axis to be adjusted. In the backward state transistors T2 and T3 are on and T1 and T4 are off. When forward biased transistors T1 and T4 also conduct. An emitter coupled pair of transistors (Fig. 7, not shown), may replace T3 and R4 to stabilize against temperature changes. In a further modification (Fig. 9, not shown), the emitter of T2 can be supplied from a tapping on a voltage divider P connected across the current source 6. The circuits have low temperature dependence due mainly to the back to back connection of the base emitter diodes of T1 and T2. Transistors T1 and T2 may be constructed in monolithic form by a common diffusion process. The circuit may be used in limit switches, in differential amplifiers, in electronic safety devices and regulator amplifiers.
Patent GB-703271-A (GB)
Title: Production of high molecular weight alkyl poly-siloxanes
IPC: C08G77/00
Filed: 1950-12-22
Abstract: Low molecular weight alkylpolysiloxanes are converted into higher polymers by heating in an autoclave, in the presence or absence of air, to an elevated temperature below the temperature at which decomposition of the alkyl groups or cracking of the carbon-silicon bond occurs, e.g. at 200 DEG  to 450 DEG  C.  The time and temperature of the reaction are dependent upon the nature of the polysiloxane(s) used and the degree of polymerisation desired. The starting materials are polymers up to the heptamer and contain 2 to 3 alkyl groups per silicon atom.  Mixtures of low polymers having the same or different alkyl groups, e.g. cyclic dimethyl- and diethyl-polysiloxanes, or mixtures of cyclic and linear polymers may be co-polymerised by the process.  Tables are given showing the effect of varying (a) the time and (b) temperature of the reaction, using the same starting materials.
Patent GB-747203-A (GB)
Title: Improvements in or relating to electric circuit control timing apparatus
Inventor: MILES JOSEPH WILLIAM
IPC: G04C23/26
Filed: 1953-11-11
Abstract: 747,203. Time switches. I.B.M. UNITED KINGDOM, Ltd. Nov. 11, 1954 [Nov. 11, 1953], No. 31244/53. Class 38(5) A timing device comprises two rotatable drums 3, 4 and a plurality of switches, one drum 3 being driven by timed electric impulses from an external source and once in every revolution giving an electric impulse to drive the other drum 4, each drum carrying detachable tappets 39 in selected positions and each switch having two actuating members 33 co-operating respectively with said tappets so that the switch is only operated upon simultaneous engagement of its actuating members by a tappet of each drum. Drum 3 which rotates once every three hours is driven through a gear train from a ratchet wheel 13, the operating pawl 15 of which is carried by a lever 16 also carrying an armature that is attracted once a minute against a spring 19 by a pulsed electromagnet 21. A tappet on a part 44 of drum 3 closes contacts 32 (Fig. 1) once a revolution so as to energize an electromagnet 30 driving a ratchet wheel 23 on a shaft 2 carrying the drum 4 which rotates once a week. Each drum comprises an arcuate strip 46 engaging grooves in end plates 45 and formed with slots 38 in which the tappets 39 may be selectively arranged. The switches are arranged in a row between the drums and each switch has a pivoted actuating member 33 having rollers 37 acting on contact springs 36 which are connected in: series by a wire 42 so that each switch is closed only when both members 33 are actuated. The tappets are formed as U-shaped clips, each leg of which is weakened so that it may be broken off if not required. Each tappet may actuate two adjacent members 33. The device may be connected to the system of Specification 352,207 [Group XVIII], so as to provide automatic time correction.
Patent GB-1275340-A (GB)
Title: Strip positioning apparatus
IPC: G11B5/588
Filed: 1970-06-29
Abstract: 1275340 Controlling position COMPUTING DEVICES OF CANADA Ltd 29 June 1970 [18 July 1969] 31327/70 Heading G1N A film-strip 12 wound on spools 10, 11 is positioned in accordance with a "desired position" signal 23 by two error-signal-actuated servomotors 16, 17 driving respectively spools 10, 11. Motors 16, 17 also receive bias signals from a source 32, varied in accordance with the amount of strip on the respective spools, to bias the spools in opposite directions to tension the strip. The film strip may have a plurality of adjacent frames representing portions of a map area, arranged on the film in groups having the same number of frames representing respective rows in said map area, adjacent groups on the film representing adjacent rows, the "desired position" signal being converted in a signal consisting of stepped components representing the required group and the required frame within that group and continuous components representing the required position within that frame. Means for producing suitable stop functions are described with reference to Figs. 4 to 7 (not shown) in which a frame width or group length corresponds to 180 degrees rotation of a control transformer (43). In Fig. 6 (not shown) a switch (47) reverses the polarity of the output from the control transformer whenever a phase detector (45) detects a change of polarity in a quadrature winding of the control transformer. Rate feedback signals may be produced by generators (74, 75) Fig.8 (not shown).
Patent GB-1041454-A (GB)
Title: Improvements in or relating to fluid actuated indicating devices
IPC: F15C1/00
Filed: 1964-08-04
Abstract: The pressure in the reaction chamber 12 (Fig. 1, not shown), of a Haber process apparatus, is detected by bellows attached to a twisted strip (see Division G4) whose degree of rotation is detected by the rotation of a nozzle fixed on the strip from which a fluid issues under pressure to impinge on a target with holes to receive the fluid to give a digital output which controls a valve 26 to control the output of ammonia 22.