baber/WOPTO huggingface dataset:
Patent GB-1324588-A (GB)
Title: Resolution of racemates of ring-substituted phenylalanines
IPC: C12P41/00
Filed: 1972-03-20
Abstract: 1324588 Substituted phenylalanines CANADIAN PATENTS & DEVELOPMENT Ltd 20 March 1972 [2 April 1971] 12927/72 HeadingC2C Racemic mono- and di-ring substituted phenylalanines in which the substituent is OCH 3 , OH, Cl or F, are resolved by esterifying the racemate with an alcohol having 1-4 carbon atoms; subjecting the racemic ester to the action of a chymotrypsin at an acid pH; and recovering the L-isomer acid in optical purity of at least 99À8% as a precipitate from the reaction mixture substantially free of the D-isomer ester. The D-isomer is also isolated by hydrolysis of the ester and crystallization optionally destroying any remaining L-isomer using an L-amino acid oxidase such as crotalus adamanteus.
Patent GB-1340596-A (GB)
Title: Tetrahydrobenzothiazolyl derivatives and their use as herbicides
IPC: C07D513/04
Filed: 1971-05-04
Abstract: 1340596 Tetrahydrobenzothiazolyl derivatives ESSO RESEARCH & ENG CO 4 May 1971 [25 May 1970] 12928/71 Heading C2C Compounds of the formulµ wherein B represents an oxygen or sulphur atom, Q, Q<SP>1</SP> and Q<SP>2</SP>, which may be the same or different, each represent an unusbstituted or halo-, hydroxy-, C 1-4  alkoxy-, sulphonamido-, C 1-4  alkylthio-, nitro-, cyano-, thiocyano- or perhaloalkyl-substituted C 1-10  alkyl, C 3-10  alkenyl, C 4-10  alkynyl, C 3-8  cycloalkyl, C 1-7  alkoxy, C 3-10  cycloalkoxy, C 1-10  alkylthio, C 1-10  alkylamino, C 2-20  dialkylamino, C 3-10  cycloalkylamino, C 6-20  dicycloalkylamino, arylamino or diarylamino group; or an unsubstituted or halo-, hydroxy-, nitro-, cyano-, carbalkoxy-, C 1-4  alkyl-, C 1-4  alkoxy or C 1-4  alkylthio-substituted C 6-10  aryl, C 6-10  aryloxy or C 6-10  arylthio group; or a nitro, cyano, thiocyano, mercapto, sulphonamido, C 1-6 -carboalkoxy, tetrahydrofurfuryl, piperidyl radical; or an unsubstituted or halo-, nitro-, cyano-, thiocyano-, perhaloalkyl-, carbalkoxy, C 1-4  alkyl-, C 1-4  alkoxy- or C 1-4  alkythio-substituted C 4-9  heteroaryl or C 1-16  acyloxy group, and Q<SP>1</SP> and Q 2  may additionally represent a hydrogen atom, W represents an oxygen or sulphur atom, or a sulphoxide or sulphonyl group or a group of the formula or wherein R 3  represents a hydrogen atom or a C 1-6  alkyl group, and R 4  represents a hydrogen or oxygen atom or a nitro, amino or C 1-6  alkyl group, and y represents zero or an integer from 1 to 4, with the provisos that when Q represents a C 1-10  alkyl group y may also assume the values 5 and 6 and in compounds containing a triazine ring if R 3  represents a hydrogen atom, Q cannot represent the methyl group and y cannot be zero, and if R 3  represents the methyl group y cannot be zero, may be prepared by conventional methods. Compounds of Formula I may be prepared by reaction of a tetrahydrobenzothiazolyl urea deriviative with formaldehyde and a primary amine. Parabanic acid derivatives of Formula II may be prepared by reacting an appropriate tetrahydrobenzothiazolyl urea with oxalyl chloride, and compounds of Formulae III and IV may be prepared by reacting a tetrahydrobenzothiazolyl urea with chlorocarbonylsulphenyl chloride. The compounds of the invention possess general herbicidal properties; they may be formulated and applied in conventional manner.
Patent GB-824503-A (GB)
Title: Jet engine exhaust silencer
IPC: B64F1/26
Filed: 1957-04-24
Abstract: 824,503. Silencing exhaust. UNITED AIRCRAFT CORPORATION. April 24, 1957 [April 30, 1956], No. 13039/57. Class 7(2) Aircraft jet engines are silenced on the ground by discharging them through a plurality of small holes 48<SP>1</SP>, Fig. 2, the spacing of which is such that the resulting small jets remain separate for a substantial distance from the holes, such spacing being preferably at least three times the hole diameter. The number and size of the holes 48' is preferably such that the flow characteristics therethrough approximate those through the unblocked engine jet nozzle 28<SP>1</SP>, to effect which a pilot-controlled radially or circumferentially adjustable perforated sleeve 52 may be provided. The cylindrical member 30<SP>1</SP> in which the holes 48<SP>1</SP> are formed may be of greater diameter than the nozzle 28', an initial smoothing duct 32<SP>1</SP> being enlarged suddenly or via a diffuser. A shown, the silencer is supported on the engine by its connecting clamp ring 40, but it may be mounted on a trolley and have a flexible connection in the duct 32<SP>1</SP>, or may be completely ground supported and unattached to the engine. The member 30<SP>1</SP> may have a rearwardly-open cylindrical shield or a series of frusto-conical shields 69, Fig. 10A, reacting against abutments 73 and of twopart construction. Fig. 6 shows a telescopic diffuser 72 and an upwardly directed silencer outlet having a shield 86 and which may be replaced by an upwardly directed diffuser having a slightly rounded end closure containing the holes 48'.
Patent GB-1259968-A (GB)
Title: Preparation of straight chain dicarboxylic acids
Inventor: WHITE JESSE ORIS
IPC: C07C51/31
Filed: 1969-03-12
Abstract: 1,259,968. Dicarboxylic acids. E.I. DU PONT DE NEMOURS & CO. 12 March, 1969 [12 March, 1968], No. 13136/69. Heading C2C.  Straight chain dicarboxylic acids (8-12C) for example 1,12-dodecane-dioic acid, are prepared by oxidizing a cyclic alcohol and/or ketone (8-12C) in (1) a first vessel with aqueous nitric acid (40-60% concentration) at between 75‹ and 120‹ C. and pressure up to 7 atmospheres absolute and (2) in a second vessel maintaining the oxidate under oxidizing conditions at between 90‹ and 110‹ C. for 3 to 60 minutes, the reaction mixture being kept in a homogenous liquid state. An oxidation catalyst, e.g. copper and vanadium may be used and the first vessel may be a stirred reactor for step (1) and a plug flow reactor for step (2). The acid is recovered by cooling to precipitate and recrystallizing from aqueous nitric acid, preferably containing urea.
Patent GB-596991-A (GB)
Title: Variable speed transmission
IPC: F16H15/50
Filed: 1945-05-25
Abstract: 596,991. Variable-speed gearing. GRAHAM TRANSMISSIONS, Inc. May 25, 1945, No. 13149. Convention date, May 27, 1944. [Class 80(ii)] In epicyclic gearing of the type in which conical rollers 16 roll inside a control ring 38 which is adjustable axially to vary the speed ratio, the rollers are mounted at their small ends in a carrier 15 on bearings 30-32, allowing hinge movement about a fixed point, and are under the action of centrifugal force, providing pressure between them and the control ring 38. The hinge connection limits the swinging movements of the rollers to a radial plane. As shown, each bearing block 30 has trunnions 31 journalled in the carrier 15 which is fixed to the driving shaft 11. The driven shaft has an internal gear 36 meshing with pinions 35 on the rollers. The control ring 38 is moved axially on turning a knob 47, by a pin 40 which is fixed to the ring 38 and slides in grooves 41, 42 in the gear casing 10 and the rotatable disc 43 respectively. In a modification, the pressure of the rollers on the control ring may be provided by a spring forcing the rollers apart. Specifications 557,970 and 571,499 are referred to.
Patent GB-1291710-A (GB)
Title: Improvements in or relating to indicating or recording instruments
Inventor: WALKER JOHN CHURTON
IPC: G01D13/24
Filed: 1969-03-13
Abstract: 1291710 Electric selective signalling WALKER CROSWELLER & CO Ltd 10 March 1970 [13 March 1969] 13161/69 Heading G4H In apparatus in which the value of a variable, e.g. pressure, is represented by the position of the arm 3 (Fig. 1) of a potentiometer 4, the output voltage from the potentiometer is fed to a plurality of threshold circuits 7 (e.g. Schmitt trigger circuits), which trigger at predetermined levels to give warning or control signals. As described the signal from the divider after amplification is fed to the base of a first transistor (T2, Fig. 2, not shown) in each trigger circuit which is cut off when the threshold level, determined by resistors (R 8 , R 9 , R 10 ), is reached to energize a further transistor (T 3 ) and hence an associated relay (F). This results in a lamp I being lit and a control signal being given. A pointer moving over a graduated scale may be connected to the arm or it may be provided with a recorder 10 movable over a chart.
Patent GB-1031161-A (GB)
Title: Improvements in or relating to fibre boards
Inventor: COOKE LEO
IPC: B27D1/00
Filed: 1961-04-12
Abstract: 1,031,161. Laminated fibre boards. CELOTEX Ltd. June 26, 1962 [April 12, 19611, No. 13197/61. Heading B5N. A panel consists of a fibre board, the two principal major surfaces of which are continuous, and which has a sheet of papersupported moisture-resistant, plastic stuck to one of its major faces, the other of said faces having stuck thereto either a sheet of papersupported moisture-resistant plastic or a paper balancer sheet. Preferably, the paper is stuck to the fibre board, the plastic film being on the outside surface. The plastic used may be polyethylene or homologues such as polypropylene, or polyvinylidene chloride, or any natural polymer or resin. The adhesive used to stick the paper to the fibre board may be sodium silicate, casein, polyvinyl acetate or acrylic base material; and the fibre board may be made from vegetable or other fibres.
Patent GB-935527-A (GB)
Title: Improvements in and relating to the manufacture of ball bearing races
IPC: B21K1/04
Filed: 1962-04-05
Abstract: 935,527. Making rings for ball-races; forging. S. MESSERSCHMIDT. April 5, 1962 (April 14, 1961], No. 13203/62. Addition to 887,126. Classes 83 (2) and 83 (4). In a method of making a ball-bearing race according to the parent Specification, the ball workpiece is of smaller diameter than the press tools and the residual web is formed adjacent one end face of the race. This method is stated to provide an improved grain structure.
Patent GB-581198-A (GB)
Title: Improvements in and relating to textile draw frames
IPC: F16P3/08
Filed: 1944-07-11
Abstract: 581,198. Machinery guards. WALSH, D. July 11, 1944, No. 13235. [Class 80 (iv)] A guard for the gearbox of a textile draw frame comprises a U-shaped member 11, 12, mounted on a member 9 attached to the shaft 6, which in turn is attached to the lever controlling the movement of the driving belt. When the belt is on the fast pulley, the short arm 11 of the U-shaped member projects over the hinged cover 13 of the gearbox and prevents it from being opened. When the belt is put on the loose pulley, the shaft 6 is moved, thereby withdrawing the U-shaped member. The cover 13 may now be lifted so as to rest on a stop 15, thus preventing the arm 12 from being moved forward, i.e., the belt cannot be put on the fast pulley as long as the cover 13 is raised.
Patent GB-132390-A (GB)
Abstract: 132,390. Brassard & Crawford, F. a, and Singer, A. Nov. 4, 1918. Monoazo dyes are obtained by coupling the diazo compound of aminooxytoluphenazine (prepared by oxidizing a mixture of p-nitrosophenol or p-aminophenol with m-toluylenediamine) with phenols, m-diamines of the benzene series, or naphthylamine sulphonic acids; phenol, mphenylenediamine, m-toluylenediamine, and naphthionic acid are specified as components. The products dye tannin-mordanted cotton yellow to red-brown shades.
Patent GB-1493029-A (GB)
Title: Polyparabanic acid composite articles
IPC: B32B15/08
Filed: 1975-04-01
Abstract: 1493029 Coating copper substrates EXXON RESEARCH & ENG CO 1 April 1975 [26 April 1974] 13328/75 Heading B2E A composite for use as a flexible printed circuit material is made by a process comprising (a) forming a solution of polyparabanic acid (PPA) having an inherent viscosity of 0.6 - 2.0 and a viscosity of 5000 - 40000 cos, (b) coating a thin layer of this solution directly onto a copper substrate in the absence of any intermediate adhesive, and (c) heating said thin layer in a nitrogen atmosphere to evaporate the solvent and provide a flexible composite article having relatively dry non- brittle layer of PPA strongly bonded to said copper substrate. The PPA coating may contain an adhesion promotor or coupling agent such as a silane and may be applied by a reverse roll coater.
Patent GB-134624-A (GB)
IPC: A45D40/00
Abstract: 134,624. Brown, R. Nov. 8, 1918. Fittings, internal.-A shaving-stick is formed of a stick of soap held within a shallow head having an internal edge 2 and a dished top or internal dome 3 holding into the soap. for instance as shown in Fig. 2. The top of the holder may be provided with a flange 4. The soap is pressed into the holder by means of a cylinder and plunger.
Patent GB-134993-A (GB)
IPC: E05B65/10
Abstract: 134,993. Bolles, W. B. Dec. 6, 1918. Emergency-exit fastenings. - In Figs. 1 and 3, the invention is shown applied to an ordinary door latch 16. The pressure bar or handle 18 is operatively connected to a sliding member 3 guided by ribs 5, 8 on the casing 1, and by its reduced end 3a entering a socket 6 on the casing. A spring 9 is housed in the socket 6 and serves to restore the member to normal position. The member 3 has a pin 12 which projects into the latch casing 13 and operates the bolt 16 by means of a bell-crank. In the form shown in Fig. 5, the member 3 is moved to operate the latch bolt, whether the handle 10 is pressed up or down. When the handle is pressed down, it operates as in the construction described above; when moved upward, its operating-end acts on the arm 18<a> of a link 18, which, in moving downwards, turns a lever 15 pivoted on the case and raises a link 16 directly connected to the member 3. In the form shown in Fig. 9, two oppositelymoving bolt members 106, 107 are employed. The bolts are guided by ribs 110 - - 114 on the casing and by the reduced end 107<a> of the lower bolt entering on the socketed end 106<a> of the upper bolt, a spring 115 housed in the socket 106<a> serving to shoot the bolts. The bolts are interconnected by a link 119, lever 116 pivoted on the casing, and a link 120, so that when the lower bolt is raised by pressing the handle, the operating-end of which enters a recess 107f in the lower bolt, the upper bolt is also withdrawn. A link 123 separately pivoted on the lever 116, or, as shown, in one with the link 119 and having an arm 123<a> extending below the operating-end of the handle, ensures that the two bolts are withdrawn also if the handle is raised.
Patent GB-1082761-A (GB)
Title: Over-run braking mechanisms
Inventor: GREGORY CYRIL
IPC: B60T13/58
Filed: 1965-03-31
Abstract: 1,082,761. Over-run brakes. CARLIGHT TRAILERS Ltd. March 30, 1966 [March 31, 1965], No. 13602/65. Addition to 981,011. Heading F2E.  In an over-run braking system for tractor trailer vehicles as disclosed in Specification 981,011, the electrically-operated means includes a solenoid 15 which is mechanically connected to a lever 12 for pivoting the latter from an initial inoperative position to an operative position in which the inward movement of the draw-bar shaft 3 due to the reversing of the tractor vehicle and sufficient to actuate the trailer brakes is prevented, the lever 12 being generally L-shaped such that upon subsequent forward motion of the tractor vehicle the lever 12 is returned to its initial position due to the resultant outward movement of the draw-bar shaft 3. When it is desired to reverse the tractor vehicle, the solenoid 15 is firstly actuated by the driver or a passenger in the tractor vehicle to angulary rotate the lever 12 in an anti-clockwise direction to bring its horizontal arm into a position behind a collar 26 provided on the draw-bar shaft 3 such that inward movement of the drawbar shaft sufficient to actuate the trailer wheel brakes is prevented. Upon subsequent forward motion of the tractor vehicle the lever 12 is returned to its inoperative position by means of a collar 27 provided on the draw-bar shaft 3 which co-operates with the vertical arm of the lever 12 to force the lever to its inoperative position when the shaft 3 moves slightly outwardly due to the forward motion of the tractor vehicle. A warning light can be provided inside the tractor vehicle to warn the driver should he commence forward towing motion with the solenoid energized. If required, the lever can be operated by hand engagement with its vertical arm which extends outside the draw-bar housing 4.
Patent GB-122373-A (GB)
Title: Improvements in or connected with Tobacco Pipes and Cigar and Cigarette Holders.
Inventor: ANGER GUSTAV
IPC: A24F1/08
Filed: 1918-08-22
Abstract: 122,373. Anger, G. Aug. 22, 1918. Tobacco pipes and cigar and cigarette holders. -Flanges l on tubular connecting pieces h, k are screwed or soldered in a lining j, arranged to fit in an enlarged bore in the stem a so as to form a collecting chamber or trap. One end of the tube h is screwed into the mouthpiece c, and the bowl end of the tube h may be slitted to make a spring joint and clear the bowl end of the bore c.
Patent GB-439419-A (GB)
Title: Improvements in manually-operated contract bridge scorers
IPC: A63F1/18
Filed: 1934-05-05
Abstract: 439,419. Games-scoring apparatus; calculating-apparatus. RUDD, G. W., The Gables, Bishop Auckland, Durham.- (Rudd, J. ; P.O. Box 5104, Johannesburg, South Africa) May 5, 1934, No. 13652. [Class 132 (ii)] [See also Group XIX] A bridge-scorer comprises endless bands a moved over end rollers by inserting a peg into holes in the bands. The bands have numerals upon them, as also have slots d through which the peg is inserted. The results are read from the bands through openings e. In a modification, the bands are provided with studs projecting through the slots for operating purposes. Operating slots may be provided on one side of the casing and the slots shown may be on the other. The top of the casing may comprise a hinged or sliding lid.
Patent GB-543647-A (GB)
Title: Improvements in or relating to refrigerating plants comprising piston operated compressors
IPC: F25B49/02
Filed: 1940-08-30
Abstract: 543,647. Compressing gases. ZEHNDER RADIATOREN, & APPARATEBAU, GEB. Aug. 30, 1940, No. 13653. Convention date, July 12,1939. Addition to 504,593. [Class 8 (i)] In a refrigerant compressor, the suction stroke in the cylinder 5 is effected by the pressure of incoming vapour, while the pressure stroke is effected by an electric motor 44 automatically connected, an endless conveyor 70 being employed, which drives the motor during the suction stroke and is driven thereby during the compression stroke, the motor circuit being closed by a thermo-static switch 62, 40, and being interrupted by a control bolt 80 actuated by the piston at one point of the stroke, where it is released, allowing the switch to open if the temperature has fallen sufficiently. The piston rod carries a crosspiece 18<SP>1</SP> engaging a pin or pins on a conveyor chain. An uni-directional coupling may be provided between the motor and the conveyer wheels. The motor may be connected and disconnected by an electric relay operated by the switch 62, 40.
Patent GB-130952-A (GB)
Title: Improvement relating to Folding Camp Bedsteads.
Inventor: HICKMOTT ALBERT EDWARD
IPC: A47C17/72
Filed: 1918-08-22
Abstract: 130,952. Hickmott, A. E. Aug. 22, 1918. Folding bedsteads.-The trestle members or stays c of a camp bed are provided with clips a, secured by screws b<1>, which serve to prevent the accidental detachment from lugs b<2> of the loops d by which the canvas bottom is supported and also to prevent danger from the projecting lugs.
Patent GB-150416-A (GB)
Title: Improvements in and relating to rotary and the like engines
IPC: F02B53/00
Filed: 1919-05-30
Abstract: 150,416. Evans, J. May 30, 1919. Fixed-abutment type; packing drums, vanes, etc.; working-fluid supply. -In a rotary internalcombustion engine of the fixed abutment type with outwardly sliding vanes, a rotor a revolves on a shaft b within a casing c, and is fitted with a plurality of radially movable blades d, which are kept in contact with the inner periphery of the casing by means of a cam g and spring -controlled runners f. The outer ends of the blades are fitted with roller bearings, or curved as shown at h. Spring-pressed packing-strips d<1> keep the blades in contact with the inside face of the casing, and spring-pressed segmental packing rings i are fitted to the sides of the rotor. The casing consists of two side plates supporting the cam in which the bearings for the shaft of the rotor are formed, and a hollow air or water cooled body portion, held together by means of bolts a. The charge is drawn in through the inlet pipe k, to the chamber l; is compressed in the chamber m, and passes to the combustion chamber through the recess n in the casing,. which registers successively with the recesses o in the periphery of the rotor, behind the blades d. A spring-pressed plunger t co-operates with the grooves o, and prevents escape of gas from the inlet to the exhaust ports.
Patent GB-1120044-A (GB)
Title: Improvements in or relating to a system for controlling extension and retraction of the cartridge in a ball-point pen
IPC: B43K24/08
Filed: 1966-03-29
Abstract: 1,120,044. Retractable ball-point pens. FABRIQUE SUISSE DE CRAYONS CARAN D'ACHE S.A. 29 March, 1966 [15 April, 1965], No. 13705/66. Heading B6P. A retractable ball-point pen has a push-button 5 with a tubular portion 6 connected thereto by a shaft F. Cartridges of relatively small diameter and large length are engaged within the tubular portion (Fig. 2), whereas cartridges 15 of relatively large diameter and short length abut the front edge 21 of the tubular portion 6. A union 9 with two longitudinal slots 13 and a cam follower 17 is screwed into the pen barrel. Two protrusions or lips 14 formed on the pushbutton 5 engage with the grooves 13 to prevent relative angular movement of the pushbutton 5 and union 9. A spring 11 between the union 9 and the button 5, biases the button rearwardly. A bush 18, rotatably mounted on the shaft 7, carries a heart-shaped cam 16, known per se, which co-operates with the cam follower 17.
Patent GB-1147181-A (GB)
Title: Improvements relating to electric razors
Inventor: COX ERNEST FRANCIS
IPC: B26B19/28
Filed: 1965-03-31
Abstract: 1,147,181. Dry shavers. RONSON PRODUCTS Ltd. 25 March, 1966 [31 March, 1965], No. 13745/65. Heading B4B. [Also in Division H2] In a dry shaver of the kind having a vibratory motor including an armature 7 carried on a lever 3 and oscillatable relative to the pole faces of a stator 5, the lever is pivotally mounted in frame members 9, 10 which are clamped on the stator by means of bolts 14 passing through apertured lugs 13, the members are formed with projections 15 engageable with holes or depressions 16 formed in the stator, and the lever 3 is formed with two yokes 17 the end of each of which is connected to a frame member by means of a spring 18.
Patent GB-1034124-A (GB)
Title: Fat emulsions containing alkali metal caseinates
Inventor: ROON JOHANNES HENDRIK VAN
IPC: A23L9/20
Filed: 1963-04-05
Abstract: 1,034,124. Cream substitutes. UNILEVER Ltd. April 3, 1964 [April 5, 1963], No. 13753/63. Heading A2B. A pourable cream substitute emulsion is prepared by forming an emulsion containing 10-50% by weight edible fat, 1-3% alkali metal caseinate and skimmed or whole milk in natural or reconstituted form. The alkali metal caseinate used is one which has been prepared by precipitating casein from skimmed milk, washing it in such a way as to remove at least 80% of the calcium present and dissolving the precipitate in a solution of a basic alkali metal compound and pasteurizing or sterilizing the emulsion. Optional ingredients include lecithin, an edible monoglyceride, sodium citrate and sodium bicarbonate.
Patent GB-201146-A (GB)
Title: Improved process for the manufacture of steam turbine rotors
IPC: F01D5/28
Filed: 1923-05-25
Abstract: 201,146. Akt. Ges. Brown, Boveri, et Cie. July 24. 1922, [Convention, date] Addition to 195,050. Case-hardening.- The hardening process described in the parent Specification, whereby only those parts of the blades most exposed to erosion are hardened, is effected according to the present invention after the blades have been completely assembled on the rotor.