baber/WOPTO huggingface dataset:
Patent GB-1226920-A (GB)
IPC: F16D25/065
Filed: 1969-09-24
Abstract: 1,226,920. Friction clutches; band brakes; brake cooling. EATON YALE & TOWNE Inc. 24 Sept., 1969 [30 Sept., 1968], No. 47093/69. Headings F2C and F2E. In a friction clutch or brake (clutch only shown) wherein a friction sleeve 13 interposed between concentric clutch elements 2, 3 is drivingly connected to one clutch element 3 and is radially expanded or contracted into engagement with the other clutch element 2 by pressure liquid, the ends of the sleeve 13 sealingly engage end plates 4, 6 fast with one clutch element 3 to form a liquid pressure chamber between the sleeve 13 and clutch element 3. As shown the sleeve 13 is splined to a driving hub 3 and is expanded radially into engagement with a driven gear 2. The sleeve 13 may be precontracted on to the hub 3 to prevent centrifugal force expanding the sleeve 13 into engagement with the gear 2. The sleeve 13 is made of a heatresistant elastic material having a high coefficient of friction such as phenolic-asbestos. The inner part of the gear 2 may be made of phosphor-bronze or chromium-copper to form a heat sink which cools the friction sleeve 13. In Fig. 3 (not shown) a check valve (147) vents the hydraulic supply passages during clutch disengagement to prevent centrifugal force on the liquid therein causing partial clutch engagement. In Figs. 6 and 7 (not shown), the friction sleeve (248) is splined to the outer clutch element (272) and is contracted on to the inner clutch element (211) by pressure fluid applied to a chamber (251). The clutch or brake is intended for use with gas turbine engines at speeds of 30,000 r.p.m.
Patent GB-1227288-A (GB)
Filed: 1969-09-12
Abstract: 1,227,288. Control of A.C. motors. CKD PRAHA, OBOROVY PODNIK. 12 Sept., 1969 [13 Sept., 1968], No. 45056/69. Heading H2J. The rotor winding of an induction motor 1 is connected through rectifier 2 to an inverter 3 which is adapted to feed power back into the supply-lines R, S, T. The inverter comprises thyristor-units 31-33 and 34-36 which are associated with firing-pulse generators 5 and 6 respectively. The firing-angle of the generator 5 is variable whilst that of the generator 6 is fixed, both generators being connected to a synchronizing circuit 7. The generator 5 receives control signals from a unit 8 which comprises a current regulator 81, speed or voltage regulator 82, and command signal controller 83.
Patent GB-1229289-A (GB)
IPC: H01S3/08
Filed: 1968-08-06
Abstract: 1,229,289. Light modulator. CARL ZEISS JENA VEB. 6 Aug., 1968, No. 37529/68. Heading H4F. [Also in Divisions G2 and H2] A Fabry-Perot resonator comprises two optical plates 11 and 12, Fig. 1, attached to connecting means 13 by two series of electrostrictive (piezoelectric) rods, each series comprising a plurality (e.g. four) rods, only two rods for each series being shown, i.e. 14 and 20 for one series and 15 and 21 for the other series. Each rod has electrically conductive linings on its opposite sides e.g. 22-25, and to vary the distance between, and/or the tilting angle enclosed by, the two optical plates, electric fields are created between the linings of each rod, the fields in radially adjacent rods e.g. 14 and 15, being arranged to be anti-parallel so that one series of rods expands whereas the other series contracts. A circuit arrangement for creating these fields is described with reference to Fig. 2 (not shown). Three or four series of rods, each series comprising three or four rods may be utilized to connect the optical plates directly or indirectly Figs. 3-6 (not shown). In these latter embodiments the radially adjacent rods (one from each series) are interconnected in zig-zag fashion, alternate rods being arranged to expand and the other rods contract under the influence of electric fields. Temperature influence may be compensated by arranging that the connected means comprises two telescoping bodies of different materials whose coefficients of expansion are such that they expand by the same amount from their point of contact for a change in temperature. Alternatively each pair of series of rods (even number of series) may be arranged to have the same thermal properties.
Patent GB-1231179-A (GB)
IPC: C07C17/25
Filed: 1967-11-20
Abstract: 1,231,179. Halo - styrenes. LAPORTE CHEMICALS Ltd. 13 Nov., 1968 [20 Nov., 1967], No. 52671/67. Heading C2C. A process for the production of nuclear halogenated halostyrene by the catalytic dehydrohalogenation at a temperature not higher than 350‹ C. of the corresponding mono-halo ethyl halobenzene in the vapour phase in the presence of superheated steam, followed by recovery of the halostyrene formed is characterized in that the catalyst consists of a major proportion of alumina. The preparation of dibromostyrene contaminated with p-bromostyrene from α-bromoethyl dibromobenzene containing α-bromoethyl p-bromobenzene is described.
Patent GB-1234675-A (GB)
IPC: E21C35/08
Filed: 1969-03-04
Abstract: 1,234,675. Mining machine-cutter heads. COAL INDUSTRY (PATENTS) Ltd. 27 Feb., 1970 [4 March, 1969], No. 11447/69. Heading E1F. A source 16 of electro-magnetic radiators and a detector 18 of such radiations are so mounted on a cutter head of a mineral-mining machine that the detector will measure back scatter radiation from the rock in which the machine is working and control, in accordance with this measured radiation, the magnitude of a signal emitted from a signal generator associated with the detector. The emitted signal is preferably utilised in the manual or automatic steering of the machine to maintain the head cutting at a desired position in a mineral seam relative to the roof and/or floor thereof. Preferably the source and the detector are peripherally mounted on a cutter drum either axially close together at the outer end of the drum or at either end of the drum dependent on information being required respectively of the vertical position or tilt of the drum. The source and detector are each embedded in an elastomeric material 18, 20 in a holder 14, 16 secured to the drum. A protective window of a tough material having a low atomic weight is positiond over the detector. Signals from the detector can be passed through a commutator associated with the drum. Such a construction allows of gating the signals to allow of either the passage of a signal when the detector is adjacent either the roof or the floor of a seam, or an average of such signals over a number of revolutions of the cutter head.
Patent GB-1253050-A (GB)
IPC: B65B25/00
Filed: 1968-12-19
Abstract: 1,253,050. Bundling newspapers. POWER INDUSTRIES Ltd. 11 Dec., 1969 [19 Dec., 1968], No. 60292/68. Heading B8C. A bundle 70 of newspapers is wrapped in a film 21, compressed, and bound with a strap 71 of binding material. The bundle 70 is pushed on to an infeed conveyer 14 by a pair of plates 65 which as they advance cause a press arm 67 to be lowered to compact the bundle, and the bundle is carried on to a web of the film 21 which is disposed between spaced reels 22, 23. The conveyer 14 feeds the bundle to further conveyers 15, 16 and against stop-plates 62 which activate a switch to retract the plates 62 and lift the press arm 67. This retraction halts the conveyers and lowers a sealing bar 19 towards a further sealing bar 18. The sealing bar 19 carries the film 21 over the bundle and abuts the further sealing bar 18 to sever the film 21 and heat seal it to form a sleeve around the bundle and re-join the free ends of the film to reform the web. A housing 36 containing binding material feeding, tensioning and sealing means, and supporting a track 37 for guiding the strap 71 is then lowered to compress the bundle. The strap 71 is then fed around the bundle, tensioned and then sealed (e.g. by friction welding in the case of a plastics strap). On completion of the binding the housing 36 and the sealer bar 19 are raised, and the conveyers are restarted. The package may then be fed to a heat shrinking tunnel by the conveyer 16. The ends of the sleeve may be closed by folding.
Patent GB-1259162-A (GB)
IPC: B23K13/02
Filed: 1969-01-16
Abstract: 1,259,162. Welding by pressure. NIPPON STEEL CORP. 16 Jan., 1969 [20 Jan., 1968], No. 2627/69. Heading B3R. In high frequency resistance presssure welding a web to a flange to form a T-shaped member or a member involving a T shape, the surface of the flange is pre-heated to a temperature between 250‹ and 1050‹ C. over two zones parallel to the opposite edges of the end of the web, the distance between the extreme edges of the zones being more than one third wider than the thickness of the end of the web. A T-shaped beam is made from a web 1 and a flange 2, the web 1 being heated by current flowing from a roller or brush electrode 13, engaging the web, to the weld point A between a pair of rollers 3, 4 and the flange 2 being heated by current flowing from the weld point A to an electrode 14 engaging the flange. A source of current 7 has one side connected to the electrode 14 and the other side to an electrode 9 carrying the roller or brush 13, the electrode 9 having projections 11, 12, on its face 10 adjacent the flange 2. The current flowing in face 10 of electrode 9 induces current in the flange 2 in the two regions 15, 16. In another embodiment a high frequency induction coil supplied from a separate source is employed to preheat the flange in advance of the contact providing for flow to and from the weld point.
Patent GB-1264453-A (GB)
IPC: H04R1/08
Filed: 1970-01-12
Abstract: 1,264,453. Microphones. AKG AKUSTISCHE UND KINO-GERATE G.m.b.H. 12 Jan., 1970 [13 Jan., 1969], No. 1451/70. Heading H4J.  A microphone capsule 1 is supported in an outer casing 2 by vibration-absorbing supports 10, 3, one at each end. The front support 10 is a resilient vibration-absorbing annular moulding embracing a collar 8 around the acoustic inlet of the capsule 1. The outer periphery of the moulding engages the inner wall of the casing 2 and is held in place by friction or by adhesive. The moulding 10 is preferably made of synthetic rubber-containing filler. The support 3 may be a centring diaphragm, an annular centring member or a member of elastic sound-absorbing material. The collar 8 may be part of the capsule 1 or may be fitted over one end of the capsule 1. The moulding 10 forms a sound funnel. The collar 8 together with an air chamber formed between the annular surface 9 and the diaphragm, forms a Helmholtz resonator for smoothing or pre-emphasizing highfrequencies.
Patent GB-1266441-A (GB)
IPC: A61K31/58
Filed: 1969-04-18
Abstract: 1,266,441. #<SP>14</SP>- Pregnenes. FARBWERKE HOECHST A.G. IS April, 1969 [18 April. 1968], No. 19989/69. Heading C2U. The invention comprises compounds of formula wherein Y is a free, ketalized or thioketalized oxo group, the ether; ester or amino component of a #<SP>2</SP>-, #<SP>3</SP>- or #<SP>3,5</SP>-enol ether, -enol ester or -enamiho group, or a free, esterified or etherified hydroxyl group which may be α- or ,#-oriented; and is an acyclic or cyclic acetal group of up to 15 carbon atoms, and wherein a A<SP>4</SP>-double bond may be present and any 5-hydrogen atom is α- or #-oriented. Preparation of the above is from compounds of formula  by oxidizing the 21-hydroxy group to give a 15α-hydroxy.20-oxo-21-al, acetalizing the latter to give a 15α-hydroxy-20-oxo-21-acetal, sulphonating the latter to give a 15α-sulphonyloxy- 20-oxo-2l-acetal, and treating the latter to remove the elements of sulphonic acid. Any groups hydrolysed during the process may be regenerated.
Patent GB-1289848-A (GB)
IPC: D01H4/48
Filed: 1969-10-07
Abstract: 1289848 Driving packages in winding machines; stop motions SPETSIALNOE KONSTRUKTORSKOE BJURO TEXTILNYKH MASHIN 7 Oct 1969 49130/69 Headings DID and D1J Yarn from a break spinning pot 24 is wound on a package 8 driven by rollers 1, 10 from a drive shaft 9. On a drop in yarn tension, a switch 3 operates a solenoid 25 to tilt a lever 12 about pivot 13, so that the drive is transmitted from shaft 9 to roller 10' to roller 10, thus reversing the direction of rotation of the package and returning the yarn end to the spinning pot 24. The drive shaft and intermediate rollers may be located within roller 1 (Figs. 2 to 4, not shown).
Patent GB-1294904-A (GB)
IPC: F23D11/08
Filed: 1970-05-21
Abstract: 1294904 Wall-flame oil burners J D MICHAEL 18 Aug 1971 [21 May 1970] 24565/70 Heading F4T To reduce noise and circulation of combustion gases an oil burner of the wall flame type has disposed in its cylindrical combustion chamber 1 an inverted, downwardly tapering, frustoconical baffle 5 so as to leave only an annular combustion space of upwardly-tapering wedge shape in axial cross-section. The chamber 1 is surrounded by a water jacket 2 and the burner comprises conventional distributing apparatus 6 and 7, burners 9 and an igniter 8. A cylindrical baffle 4 is disposed beneath a flue 3 of the burner and is attached to the top of the baffle 5 whose lower end terminates at a distance above the bottom of the combustion chamber which can be varied to suit the particular burner used
Patent GB-1295641-A (GB)
IPC: B22F9/00
Filed: 1969-03-21
Abstract: 1295641 Carbon suboxide; silver bromides D BRYCE-SMITH and E T BLUES 20 March 1970 [21 March 1969 27 March 1969] 14998/69 and 16171/69 Heading C1A [Also in Divisions C2 and C7] Carbon suboxide is produced by rapid heating of a complex analysing as Ag 3 C 3 O 3  which is formed by reaction of silver acetate and acetic anhydride under argon to give a complex Ag 3 C 3 O 2  and exposure of the latter to light and oxygen. Treatment of the complex Ag 3 C 3 O 2  with 2À5N KBr at 98‹C gives a product analysing as Ag 10 Br 9  which upon treatment with 0À880 ammonia yields a material Ag 4 Br 3  having a magnetic susceptibility which is field-dependent. The latter product appears to be a mixture of silver bromide and silver metal containing "cluster" silver in which some of the Ag atoms are arranged in monoatomic layers.
Patent GB-1297178-A (GB)
IPC: C08J9/34
Filed: 1970-12-07
Abstract: 1297178 Cushions INDUSTRIE PIRELLI SpA 7 Dec 1970 [24 Dec 1969] 57966/70 Heading A4M [Also in Division B5] A polyurethane cushion or other article of upholstery has an inner core of expanded polyurethane and a micro-porous polyurethane skin formed before the core and intimately joined thereto; the skin has a plurality of cells of diameter less than 0À02mm. closely and uniformly spaced within its thickness, which may be up to 3mm., and has a density of 0À4 to 0À4g/cc. The outer surface of the skin is substantially continuous and waterproof. The article may comprise metallic reinforcements.
Patent GB-1301417-A (GB)
IPC: G06F9/32
Filed: 1971-05-27
Abstract: 1301417 Digital computers INTERNATIONAL STANDARD ELECTRIC CORP 27 May 1971 [27 May 1970] 17514/71 Heading G4A A digital electric data processing system is adapted to execute so called multiple execute instructions EXE i.e. instructions each of which controls the execution of a number of other instructions. Each EXE contains the number of other instructions and at least part of the address of the first of the other instructions. Apparatus.-This comprises a memory MEM, an arithmetic unit AU and a control unit CU the AU including a 16 bit program counter. The control unit operates in up to four cycles F, 1, A and B, each composed of four subcycles. Operation.-An address in register Y from a previous instruction fetches a 16 bit instruction from memory MEM to register M and a 7 bit operation portion of this (including 2 number bits) is received in register F where it is decoded in units DEC1, DEC2. If it is a multiple execute instruction EXE, for example, the number bits indicate that 4 instructions are to be executed. The remaining nine bits of the instruction are part of the address of the first of the 4 instructions. This only requires an F cycle per instruction and none of the 4 instructions are themsleves multiple execute. The flow diagram of Fig. 3 (not shown), indicates the activities during the four subcycles of the F cycle. During the first subcycle the instruction is fetched as described; during the second the 9 bit address part is transferred to register Y and the remaining- seven bits of Y set to 0 to complete the address (or alternatively 7 other bits inserted); during the third the address of EXE in P is transferred to the E register, a bi-stable BEXT is set to 1, 2 bits FO5 and FO6 in register F are registered in counter Ks, MEM is read for the address of the first instruction; and during the fourth the instruction address in Y is transferred to P, registers M and F are reset, and BFCT is set to 1. Then an F cycle is started for the first instruction of the 4 (Fig. 3, bottom right hand branch), during the third subcycle the counter Ks is decremented by 1, and during the fourth cycle the address in Y is incremented by one, thus addressing the next instruction which is fetched during the next cycle.  This is repeated for each cycle till the counter is O when the EXE address is returned to the Y register, the counter incremented by one and the main programme resumed. The instruction EXE contains the number of instructions to be executed but this number could be in another instruction which sets Ks independently.
Patent GB-1304358-A (GB)
Inventor: TURNER HAROLD ROY
IPC: B60N2/235
Filed: 1969-10-24
Abstract: 1304358 Seats H R TURNER (WILLENHALL) Ltd 6 April 1970 [24 Oct 1969 3 Dec 1969] 52107/69 and 58959/69 Addition to 1212567 Heading A4J [Also in Division E2] The two part hinge disclosed in the parent Specification is modified by the provision of a carrier member 60 pivoted to the slotted plate  and engaging the hub 48, the hub being guided by the carrier member in its movement relative to the slotted plate such that the hub moves accurately about the pivotal axis of the control member.
Patent GB-1305470-A (GB)
IPC: G01V9/00
Filed: 1970-11-03
Abstract: 1305470 Moving band filter O WEISS 3 Nov 1970 52246/70 Heading BIT [Also in Division El] Prospecting for deposits in the earth's crust is carried out by collecting and analyzing samples of airborne particles as described in Specifications 1046437 and 1176768. The collector however consists of a streamlined frame 2 with an opening across which a web 6 of the particle collecting threads is moved from one roll 12 to another roll 21. The let-off roll 12 and the take-up roll 21 are shielded from the airstream by the frame, and the web is interleaved when on the rolls with an impervious web 19. The take-up roll is driven by a d.c. motor 25, and the let-off roll is braked by a brake drum 36 and band 35. The tension in the band is adjusted by a differential gear 39 with two inputs from a roller 14, which measures the actual speed of the web, and a motor 45 which is run at the desired speed. When the web is stopped, the brake drum 36 may be locked by a solenoid operated peg 50. The collector web consists of longitudinally extending threads, which may be nylon or other synthetic polymer, or insulated and electrically charged metal threads. The threads may be held together by adhesive or by transverse plastics strips. The edge of the web or the transverse strips may be perforated to assist in identifying the longitudinal position of the web.
Patent GB-1309550-A (GB)
Title: Fuel supply systems for internal combustion engines
IPC: F02D41/36
Filed: 1969-07-01
Abstract: 1309550 Fuel supply control system CAV Ltd 22 June 1970 [1 July 1969] 33081/69 Heading G1N [Also in Division F1] A fuel system for a multi-cylinder I. C. engine 10, comprises a fuel supply unit 11 controlled by a unit 12. During operation of a four cylinder comparison-ignition engine, a commutator 17 delivers signals representative of the peak torques developed at each firing stroke to comparators A1, A2, A3, A4 which also receive a signal representative of the mean value of the peak torques from a unit 13 or representative of a peak torque demand. Any error signal developed is stored in associated memories B1, B2, B3, B4 until it is supplied via commutator 18 to the control unit 12 to thereby suitably adjust the fuel supply to the appropriate cylinder. The unit 12 also controls the unit 11 in accordance with an error signal produced at 16 by comprising a signal from 14 indicative of mean torque produced by the engine with a demand signal from an operator-controlled member 15.
Patent GB-1311099-A (GB)
Title: Hot axle box detection equipment
IPC: B61K9/06
Filed: 1969-12-30
Abstract: 1311099 Hot axle box detector HAWKER SIDDELEY DYNAMICS Ltd 29 Dec 1970 [30 Dec 1969] 38518/69 Heading B7N In an arrangement for detecting hot axle boxes on rail vehicles in which infra-red sensing device 22 is mounted in a thermally insulated enclosure 26 and has its temperature stabilized by cooler 20 and heater 21 controlled via power amplifiers 18, 19 from temperature controller 24, the stabilizing circuits are disabled as a train approaches the detector and restored, after a delay, after the train has passed. Thus any interference in the operation of the detector by the temperature stabilizing circuits is prevented. The train presence detecting circuit includes two combinations of comparator amplifier and electronic switch 6, 7, and 14, 15 connected in series to the gating input of the power amplifiers 18, 19 with a delay circuit 8, 9, connected between the combinations.
Patent GB-1315825-A (GB)
Title: Spiropyran derivatives
IPC: C07D491/10
Filed: 1969-12-10
Abstract: 1315825 Spiropyran derivatives MINNESOTA MINING & MFG CO 2 Dec 1970 [10 Dec 1969] 60347/69 Heading C2C [Also in Division C4] Novel spiropyrans having a pyrazoline ring spiro to the pyran ring with the oxygen atom of the pyran ring adjacent the atom which forms the spiro attachment between the pyrazoline and pyran rings, and having one or more rings fused to the pyran ring, and particularly spiropurans, one form of which has the general formula in which R<SP>1</SP> and R<SP>2</SP>, which may be the same as or different from one another, each represents an alkyl, cycloalkyl or aralkyl group, or R<SP>1</SP> and R<SP>2</SP> together complete a cycloalkyl ring, R<SP>3</SP> and R<SP>4</SP>, which may be the same as or different from one another, each represents an alkyl, cycloalkyl or aralkyl group, and R<SP>5</SP> and R<SP>6</SP>, which may be the same as or different from one another, each represents a hydrogen or halogen atom or a nitro, cyano or carboxy group, or R<SP>5</SP> and R<SP>6</SP> together form a fused on aromatic ring are prepared by reacting a quaternary ammonium compound such as one of formula with an aromatic aldehyde such as one of formula The products have photochromic and thermochromic properties undergoing a change of type 5 - Methylthio - 2,3,4,4 - tetramethyl -, 3- methylthio - 4,4,5 - trimethyl -, 2 - ethyl - 5 - ethylthio - 3,4,4 - trimethyl - and 5 - ethylthio - 2,3,4, 4-tetramethyl-pyrazolenium iodides are prepared by quaternization processes.
Patent GB-1316129-A (GB)
Title: Surgical cement
IPC: C03C12/00
Filed: 1969-12-15
Abstract: 1316129 Opal glass compositions for dental cement mixes NATIONAL RESEARCH DEVELOPMENT CORP 2 Dec 1970 [15 Dec 1969] 61041/69 Heading C1M [Also in Division C3] A surgical cement pack comprises as one component a fluoroaluminosilicate glass powder having either (a) a weight ratio of SiO 2 : Al 2 O 3  of 1À5-2À0 and a weight ratio of F: Al 2 O 3  of 0À6-2À5 or (b) a weight ratio of SiO 2 : Al 2 O 3  of 0À5-1À5 and a weight ratio of F: Al 2 O 3  of 0À25-2À0, and as another component a surgically acceptable water soluble poly-(carboxylic acid) having a relative viscosity of 1À05-2À00. The invention also relates to a novel fluoroaluminosilicate glass powder suitable for use in a surgical cement composition having (a) a weight ratio of SiO 2 : Al 2 O 3  of 1À6-1À9 and a weight ratio of F: Al 2 O 3  of 0À6-2À5, (b) a weight ratio of SiO 2 : Al 2 O 3  of 1À5-2À0 and a weight ratio of F: Al 2 O 3  of 1À05-1À5, or (c) a weight ratio of SiO 2 : Al 2 O 3  of 0À75-1À0 and a weight ratio of F: Al 2 O 3  of 0À25-2À0. The fluoroaluminosilicate glasses may be prepared by fusing mixtures of SiO 2 , Al 2 O 3  and CaF 2  optionally together with AlF 3 , AlPO 4  and Na 3 AlF 6 . Numerous examples of suitable fusing mixtures are specified.