baber/WOPTO huggingface dataset:
Patent GB-833358-A (GB)
Title: Kainic acid and its isomers and their derivatives and a method for preparing them
Filed: 1956-05-07
Abstract: The invention comprises kainic acid, its isomers, their esters and N-acyl derivatives of the general formula (planar structure indicated) <FORM:0833358/IV (b)/1> wherein R1 represents hydrogen or a carbalkoxy radical having up to 5 carbon atoms, R2 and R3 each are hydrogen or alkyl radicals having up to 5 carbon atoms, R4 is hydrogen or aliphatic acyl or carbalkoxy radical having up to 5 carbon atoms, other than compounds having the planar formula <FORM:0833358/IV (b)/2> wherein R is isopropyl, isopropenyl, isopropylidene, or acetyl, R1 is hydrogen except when R is a divalent group, in which case R represents an additional bond, R2 and R3 are hydrogen or methyl, and R4 is hydrogen or acetyl, or their lactones when R is unsaturated, and wherein the stereo - chemical configuration of > CH.COOR3 of the compounds is D-form relative to the imino group and the substituents at C2 and C3 are cis to one another.  The compounds are prepared by eliminating the substituent R4 of a compound of the planar structure <FORM:0833358/IV (b)/3> (wherein R1 is hydrogen or carbalkoxy, R4 is a halogen atom, a hydroxy group, an alkoxy radical, a dialkylamino group or piperidino, R5 and R6 are hydrogen or alkyl radicals, R7 is hydrogen or an aliphatic acyl or carbalkoxy radical or a benzoyl group) together with the hydrogen at a -position of the substituent at the 4-position of the nucleus, by unsaturating the 4-position substituent by a known general method, e.g. dehydrohalogenation when R4 is halo, halogenation and then dehydrohalogenation when R4 is hydroxy (or alkoxy after conversion to hydroxy), or quaternization and heating in the presence of an alkali when R4 is dialkylamino.  When R4 is hydroxy or alkoxy, a second halogenation in a liquid alcoholic medium, followed by dehydrohalogenation, may be necessary to convert unreacted material or an intermediate lactone to the desired product. Examples detail the conversion of 1,2-dicarbethoxy - 3 - dicarbethoxymethyl - 4 - (b  - ethoxyisopropyl) pyrrolidine to 2-carbomethoxy-3-carbomethoxymethyl - 4 - isopropenyl - pyrrolidine; 1,2 - dicarbethoxy - 3 - dicarbethoxymethyl - 4 - (b  - dimethylamino - isopropyl) pyrrolidine into its 4-isopropenyl analogue and 1,2 - dicarbethoxy - 3 - carbethoxymethyl - 4 - (21 - dimethylamino - 11 - methylethyl) - pyrroldine into 1,2 - dicarbethoxy - 3 - carbethoxymethyl - 4 - isopropenyl - pyrrolidine.  N - Carbalkoxy - or N - acyl - 2 - carbalkoxy3 - dicarbalkoxymethyl - 4 - (b  - alkoxyisopropyl or b -dialkylaminoisopropyl) pyrrolidines and their 3-carbalkoxymethyl analogues are prepared from esters of N-carbalkoxy- or N-acyl)-N-[2 - (b  - alkoxyisopropyl - or b  - dialkylaminoisopropyl) - 2 - carbalkoxyethyl] glycine. Specification 795,750 is referred to.
Patent GB-615566-A (GB)
Title: Improvements in or relating to the alkylation of aromatic hydrocarbons
IPC: C07C2/66
Filed: 1946-05-10
Abstract: Olefines are partially converted to alkyl halides in a first reaction zone by reaction with gaseous hydrohalide in presence of a hydrohalogenation catalyst at an elevated temperature, the reaction mixture consisting of alkyl halide, unreacted olefin and hydrohalide is cooled and passed to a second reaction zone where it is reacted with aromatic hydrocarbons in presence of Friedel-Crafts' type catalyst, alkylated aromatic hydrocarbons are separated, and unreacted olefin and hydrohalide are recycled, together with hydrohalide evolved in the alkylation, to the first reaction zone. Equal volumes of ethylene and hydrogen chloride may be passed over a metallic chloride, in solution or on a support, or aluminium chips, and the partially converted mixture cooled to alkylation temperature and used to alkylate aromatic hydrocarbons with an aluminium chloride catalyst.  Hydrogen chloride sufficient to compensate for losses is fed to the first reaction zone.  Specification 581,145 is referred to.
Patent GB-1330826-A (GB)
Title: Switching device for indicating the presence of a load on an automotive vehicle seat
IPC: B60R22/48
Filed: 1972-03-27
Abstract: 1330826 Retractive switches SWF-SPEZIALFABRIK FUER AUTOZUBEHOER GUSTAV RAU GmbH 27 March 1972 [20 April 1971] 14209/72 Heading H1N A switching device for indicating the presence of a load on a vehicle seat 10, 11, 12, includes a spring 15 secured to the seat frame 14, spring 15 carrying a switch 16 the actuating member 23 of which carries a pressure plate 17 which rests against the underside of the resilient seat. Switch 16 is mounted on a base-plate 20, bent out members of which are connected to a bearing 19 journalled to rotate in a bearing bush 18 connected to band spring 15.
Patent GB-801056-A (GB)
Title: Frame for carrying radiographic films
IPC: G03D13/12
Filed: 1956-05-08
Abstract: 801,056. Photographic processing apparatus. SILVANI, P. May 8, 1956, No. 14244/56. Class 98(2) A frame for carrying photographic (particularly radiographic) film for processing has two transverse bars 5, 6 extending between the sides 1, 2 of the frame, bar 5 being fixed and bar 6 being slidable, each bar carrying a number of hooks 9, 10 for supporting films of different sizes in the frame. Slidable sleeves 11, 12, with helical springs inside them, act as adjustable stops for bar 6.
Patent GB-1298844-A (GB)
Title: Commutatorless direct current motor
IPC: H02P6/08
Filed: 1970-03-24
Abstract: 1298844 Automatic control of speed BUHLER NACHFOLGER GmbH GEB 24 March 1970 [29 March 1969] 14253/70 Heading G3R [Also in Division H2J  In a commutaterless D.C. motor having a permanent magnet or electromagnet rotor and a multiple stator winding comprising at least three winding portions, 1, 2, 3, energized sequentially through respective power transistors 5, 6, 7, forming part of respective stages 16, 17, 18, of a ring counter type control circuit, wherein the output of every stage is connected to the inputs of the preceding and next following stages through R. C. circuits of different time constant (e.g. 24, 25 and 23, 22 for stage 17), the two R.C. circuits connected to the input of each stage (e.g. 19, 20 and 27, 20 for stage 17) have a resistance or capacitance (as shown, e.g. 20) in common. The system is self starting, the switching sequence of the stages being determined by the R.C. circuits of lower time constant. Speed control is effected by rectifying, in diodes 29, the voltages induced by the rotor in the stator windings portions and comparing the rectified voltage with a reference voltage at a Zener diode 31 to control a transistor 11 in the collector circuits of pre-transistors 8, 9,10 controlling the power transistors. Motor reversal may be obtained by changing over the connections of the R.C. circuits or by changing the values of the resistances in the R.C. networks. The two resistors, e.g. 19,27, having a common capacitor, e.g. 20, may be replaced by a potentiometer with a variable tap. A differential capacitor may be used when the R.C. networks have the resistor in common.
Patent GB-476854-A (GB)
Title: Improvements relating to valves
IPC: F16K5/16
Filed: 1937-05-24
Abstract: 476,854. Valves. MERCO NORDSTROM VALVE CO. May 24, 1937, Nos. 14360 and 14361. Convention dates, May 22, 1936 and April 22, 1937. [Class 135] Relates to sealing-means, and to resilient seating-means, in a valve having a rotary closure-member. The tapered plug valvemember 13 is resiliently held to its seat by a screw plug 26 acting through a ball 36 and resilient disc 34, and may be jacked therefrom by lubricant compressed in a chamber 18 by a screw 20 in the bored valve-stem. The threads of the plug 26 are interrupted by a groove 28 into which a sealing-medium (such as a mixture of graphite, asbestos and an unctuous material) is forced through radial channels 29 by a screw 31. The positions of the ball 36 and disc 34 may be interchanged, Fig. 3 (not shown). For larger valves, Figs. 4 to 6 (not shown), the plug 26 is replaced by a screwed-in plate through the centre of which the adjustable plug screws. In these constructions, various methods are shown of supplying sealing-medium to grooves interrupting the threads of both the plate and the screw-plug, check-valves being provided to prevent return of the sealing-medium. British Specifications 436,073, and 438,024, and U.S.A. Specification 1,932,322, are referred to.
Patent GB-182412-A (GB)
Title: Improvements in or relating to systems of raising liquids
IPC: F04F1/02
Filed: 1921-01-25
Abstract: 182,412. Allen, T. G. Jan. 25, 1921. Direct air-pressure apparatus, automatic; raising by stages; air and gas compressing devices, application of.-A system of raising liquids by means of static pressure obtained from a river &c., a portion of which is situated or maintained at a higher level than the rest, comprises an operating chamber A<0> situated near the surface 2 of the low level water and a second chamber A<x> situated near the surface 1 of the high level water. These chambers are alternately filled and emptied under the influence of static pressure resulting from the head of water above and below them, and are connected by pipes B<x>, B‹ to a pipe B containing air or other gas and opening into a closed container C connected by a pipe C' to the water to be raised and by a pips C<2> to a reservoir D. If the liquid is to be raised in several stages, a second closed container C<x> is connected to the air pipe B and draws from the reservoir D and delivers to a reservoir E. As the liquid flows from the chamber A<x> through a siphon A<x2> it depresses a plate F<2> connected by a cable to a rod f. The movement of the rod f opens the valve b<x> in the pipe B<x> and closes the valve b<0> in the pipe B<0> and the water inlet valves a<x1>, a<01>. The emptying of the tank A<x> creates a vacuum in the pipe B and chamber C, and water enters the chamber C through the pipe C'. When the tank A<x> is empty, a weight opens the valves b<0>, a<01>, a<x1>, and closes the valve b<x>. Water then enters the chamber A<0>, compressing the air in the pipe B and forces the liquid from the chamber C to the reservoir D.
Patent GB-1399006-A (GB)
Title: Circuit boards
IPC: H05K1/11
Filed: 1972-03-28
Abstract: 1399006 Printed circuits INTERNATIONAL COMPUTERS Ltd 26 March 1973 [28 March 1972] 14401/72 Heading H1R In a multilayer printed circuit board, each layer comprises an array of mounting positions 12 for the terminal leads of circuit components, conductive tracks 14, 15, 16, 17 extending from the mounting positions, and a plurality of conductive portions 18 lie on an outer layer so as to be accessible from a surface of the board so that they may be electrically contacted by a probe for testing, each portion 18 being connected to one only of the conductive tracks. Conductive portions 18 for tracks not located on an outer surface may be flattened end portions of conductive material filling through bores. Tracks 14, 15 are power supply tracks, track 15 being common to one set of terminals of integrated circuits or other components mounted on the board and connecting them to terminal stake 27. The other set of component terminals are also connected to a common terminal stake 28, but for separate testing of the components, may be disconnected-by means 30 comprising a member 30 having interconnected contact tongues engageable with conductive pads 29 (Fig. 2, not shown) or teeth engaging in conductive material lined holes. Conductive portions 18 connected to the supply tracks 14, 15 may be used for testing track continuity. As shown portions 18 are in a regular array for co-operation with a bed-of-nails type test probe having spring- loaded contacts (Figs. 3, 4, not shown).
Patent GB-214858-A (GB)
Title: A combined portable electric heater and lamp
IPC: H05B3/00
Filed: 1923-05-31
Abstract: 214,858. Rombach, P. May 31, 1923. Light reflected by trough-shaped reflectors; lantern shutters.-A combined portable electric lamp and heater, particularly for use as a bedwarmer, comprises a casing with an inner reflecting surface and totally enclosing a lamp 7 secured to one end of the casing, the casing being constructed so that it may be opened to disclose the lamp with the reflecting surface behind it for use as a table or hanging lamp. The casing comprises two semi-cylindrical members 1, 2 pivotally connected at the ends, a locking catch being provided for retaining them in the closed position. Various modifications are described in which the casing is in two parts hinged together longitudinally. In another, modification, the casing consists of two semi-cylindrical parts, one of which slides longitudinally in the other.
Patent GB-1310041-A (GB)
Title: Apparatus for 'he rapid closing of pipes for gaseous media
IPC: F16K31/56
Filed: 1970-03-25
Abstract: 1310041 Fluid-pressure servomotor systems MESSER GRIESHEIM GmbH 25 March 1970 [25 March 1969] 14424/70 Heading G3P [Also in Division F2] Undesirable variation of pressure in a pipeline H causes a pressure actuated device F<SP>1</SP> to close a valve E. The device includes a diaphragm 3 subjected to the pressure in the pipeline through a connection D<SP>1</SP> and loaded by a spring 8 which can be adjusted by a nut 13 and a slidable member 9. When increased fluid-pressure depresses the diaphragm, a rod 16 is displaced into a position in which a groove 17 receives the balls 21 of a locking mechanism so that a sleeve 19 is freed for downward movement by a spring 26 and a valve head 23b connects parts B and C and closes a part A. Pressure from the line H acting on a piston I to keep the valve E open is thus released. A pressure regulator L and a safety valve M are provided downstream of the valve E. In a second embodiment, the diaphragm is arranged at rightangles to the position shown and operates the rod 16 through a pair of pivoted members (48, 49) Fig.2 (not shown) in response to either a rise or fall in pressure.
Patent GB-1441261-A (GB)
Title: Semiconductor avalanche photodiodes
IPC: H01L31/107
Filed: 1972-03-28
Abstract: 1441261 Photodiodes EMI Ltd 27 June 1973 [28 March 1972] 14442/72 Heading H1K An avalanche photodiode has a shallow surface region 1 of opposite conductivity type to a surrounding epitaxial layer 6 and its supporting substrate 2, the substrate having a resistivity lower than 0.1 ohm. cm. The reverse bias and the design of the device are so chosen that at least part of the depletion region 4 associated with the junction between the region 1 and layer 6 extends to the substrate. This reduces the low-field volume of the layer and since the diffusion length of carriers formed by radiation absorbed in the substrate is low such carriers add little to the overall photocurrent of the device, which gives sharp output pulses. The device has one or two annular guard rings 3 associated with the region 1, the outer guard ring (if present) being spaced from that contiguous with the region. Preferably the lower boundaries of guard ring 3 and region 1 are coplanar, as shown, to eliminate any low field portion 5 of the layer 6 beneath the region 1. The region 1 is formed by diffusion into the surface of a pit etched in a previously diffused region which comprises guard ring 3. Fig. 5 (not shown) depicts a silicon diode of the type shown in Fig. 3 mounted on a metal and glass header welded to a metal can with an end window.
Patent GB-599445-A (GB)
Title: Improvements relating to the treatment of seeds
Filed: 1945-06-08
Abstract: Seeds are coated with a liquid adhesive containing active carbon for protection against herbicides.  The seeds may be rolled between surfaces coated with a suspension of finely-divided active carbon in water containing gum or allowed to fall through a spray of the suspension or dipped in a paste consisting of 60 per cent by weight of active carbon and 40 per cent of a 2 per cent solution of gum tragacanth and then rolled in powdered active carbon, screened and dried at room temperature.  Alternatively, the seeds may be coated with adhesive, e.g. a concentrated solution of gum arabic, and mixed with powdered active carbon, or wetted with water or other inert solvent for the adhesive and mixed with, or allowed to fall on, a mixture of active carbon and dry adhesive.  Specifications 311,325 and 330,548, [both in Class 81 (i)], are referred to.
Patent GB-316366-A (GB)
Title: Improvements in submersible alternating current motor driven pumping apparatus
IPC: H02K5/132
Filed: 1928-05-17
Abstract: 316,366. Rehse, M. May 17, 1928. Pumping-apparatus.-A unit of the type comprising a submersible alternating-current motor driving a pump and fed through a transformer, is made of tubular form and of diameter sufficiently small to allow the unit to enter narrow bore pipes. The transformer is mounted directly above the motor and cooling is effected by passing the pumped liquid through or around the motor and transformer. Fig. 1 shows a section through the transformer and Fig. 2 a section through the motor and pump which are mounted below the transformer. Fig. 7 is a transverse section through the motor. The motor c and pump b, together with the transformer w, are contained in a casing within a well tube a, the transformer compartment being soldered or otherwise rendered liquid-tight. The motor shaft d is hollow and conveys the pumped liquid to an ascension pipe g passing through the transformer but in the case of a very narrow. bore well pipe, a solid motor shaft is employed and the liquid passes to the ascension pipe through tubes e, Fig. 7, placed in the stator laminae and soldered to the upper and lower covers of the motor casing. The internal cooling action of the liquid is assisted by liquid which emerges through holes l and flows between the external wall of the casing and a pressure equalizing casing k.
Patent GB-1424296-A (GB)
Title: Electrical cables
IPC: B05B5/08
Filed: 1974-04-02
Abstract: 1424296 Cable for electrostatic spray gun RANSBURG CORP 2 April 1974 [2 April 1973] 14661/74 Heading H1A An electric cable 12, for connecting an electrostatic spray gun (10) Fig. 1 (not shown), to a separate high voltage source (11) comprises a stranded conductive fibre glass core 14, within a semi-conductive shield 15, surrounded by a body of insulating material 16, a flexible conductive sheath 17, in an outer protective covering 18; the case and shield together having a resistance of between 20,000 and 300,000 ohms/ ft (approx. 667 and 10,000 #/cm.). The core consisting of many very small diameter fibres is 0À015 inch diameter, and the shield has an external diameter of 0À050 inch typically. The insulation is high grade polyethylene and the sheath consists of 160 strands of 30 gauge copper alloy wire braided around the insulation. The outer protective covering is typically 0À03 inch thick polyurethane, the total diameter of the cable being <SP>7</SP>/ 16  inch. An electrostatic apparatus including the above cable is also claimed.
Patent GB-1340461-A (GB)
Title: Method of forming a radio frequency transistor device
IPC: H01L23/485
Filed: 1972-03-29
Abstract: 1340461 Semi-conductor devices RCA CORPORATION 29 March 1972 [5 April 1971] 14696/72 Heading H1K The N-type discrete emitter regions 24 of an overlay transistor are surrounded, as viewed in a direction perpendicular to the plane of the device surface 14, by a grid-shaped layer 32 of P<SP>+</SP> material deposited on the surface 14 in contact with the base region 22. A P<SP>+</SP> grid 34 may also be present within the base region 22, produced by diffusion of impurities into and through the layer 32. The grid-shaped layer 32 may be of the same semi-conductor material as the main body 12, e.g. Si, or may be of a different material. It may be monocrystalline, deposited only in a grid-shaped window 28 in an oxide or nitride layer 26, or polycrystalline, deposited initially over the entire surface and then selectively removed from the layer 26 to leave only the grid 32. A further insulating layer 36 covers the grid 32 and is in turn covered by the common emitter contact layer 38.
Patent GB-569210-A (GB)
Title: Improvements in or relating to means for counting crates or other moving articles
IPC: G06M1/08
Filed: 1943-09-08
Abstract: 569,210. Counting moving articles. STOREY, R. T. Sept. 8, 1943, No. 14734. [Class 78 (i)] In a conveyer means is provided for counting crates &c. as they pass from a higher to a lower level. The crates pass over an inclined plate E which is supported at one end by a pair of pivoted arms F and connected at the other end to a plate G. A cranked lever H connects the plate G to the actuating shaft.K of counting mechanism M. Springs J tend to retain the plate E in the raised position.
Patent GB-824037-A (GB)
Title: Improvements relating to buildings and structures
IPC: E04B2/66
Filed: 1957-05-09
Abstract: 824,037. Building slabs; walls. BOOKER, E. E. April 29, 1958 [May 9, 1957], No. 14750/57. Classes 20(4) and 87(1) A single or double wall comprises foundation blocks 9 supporting vertical posts 6 with which are engaged slabs 1 having the rear corners 4 of each side edge cutaway to leave an engaging portion 5 the lower face of which slopes downwardly both toward the rear of the slab and laterally thereof and is received by a recess 7 in a post. Corresponding L-shaped corner slabs, and jamb blocks are provided. The rear face of the slab 1 may be recessed at 2.
Patent GB-620049-A (GB)
Title: Improvements in or relating to electric resistors
IPC: H01C1/148
Filed: 1946-05-15
Abstract: 620,049. Variable resistances. PHILIPS LAMPS, Ltd. May 15, 1946, No. 14754. Convention date, May 2, 1945. [Class 37] An electric resistor, comprising an elongated insulator 1 supporting a layer of resistance material 3 and an outer insulating coating 5, is encircled by one or more channel-shaped contact rings 9, each forming in conjunction with the resistor, an annular space 11 wherein a contact finger 15 bears upon the resistance material through a slot or window 7 in the insulating coating. The finger 15 is resiliently connected to the contact ring by a spring leaf 13, the finger end of which is preferably of the same width as the channel.
Patent GB-1457057-A (GB)
Title: Process for refining metals in particular pig iron and apparatus for carrying out the process
IPC: C22B23/02
Filed: 1974-04-03
Abstract: 1457057 Regulating pneumatic charging FRIED KRUPP GmbH 3 April 1974 [4 April 1973] 14823/74 Heading F4B [Also in Division C7] In the refining of pig iron in a molten bath, oxygen and finely divided lime are supplied beneath the bath surface through a multiholed nozzle or a single nozzle associated with further nozzles and through which a carrier gas, CO, carries powdered carbonaceous material, such as coal dust, into the bath such that the oxygen jet is enclosed by the powdered coal dust in the carrier gas. Both temperature and slag composition may be adjusted by the entrainment of fine ore in either or both the oxygen and CO gases, but the ratio of fine ore to coal dust should not exceed 5. Control of the final carbon content may be achieved by varying the coal dust/ oxygen ratio towards the end of the processing. The CO supply is derived from the refining process by bleeding off some of the cleaned waste gas from the exhaust system. Alloying can be carried out by replacing the fine ore with alloying additions, and the process is suitable for other oxidation refining techniques i.e. copper, nickel, ferronickel. The apparatus used is a tiltable vessel 1 with a suction hood 2 connected to a dust extraction plant 3. A multiholed nozzle 4 supplied by line 5 with CO containing coal dust from container 7 and five are from container 8 and by line 6 with oxygen from reservoir 9 and lime from container 10 and fine ore from container 11. Containers 7, 8 are pressurized by CO through line 17 from reservoir 16, and containers 10, 11 pressurized with oxygen through line 18 from reservoir 9. Valves 12, 13 operating lines 5, 6 are protected by device 21, which operates lines 24; 25 from inert gas reservoir 26 in the event of feed line blockages to prevent damage to the nozzles.