baber/WOPTO huggingface dataset:
Patent GB-794264-A (GB)
Title: Improvements in or relating to the working of material
Inventor: DESMOND ERIC
IPC: B21B31/30
Filed: 1955-05-11
Abstract: 794,264. Rolling. SMITH & SONS (ENGLAND), Ltd., S. Aug. 8, 1956 [May 11, 1955], No. 13589/55. Class 83 (4). In apparatus for rolling metal strip a fine pass adjustment for the rolls A is provided by varying the temperature of a thermally-expansible block G. The material of the block may be nickel steel, phosphor bronze or other materials having a higher coefficient of expansion than the steel or cast iron of the machine frame D. The rolls A are mounted in bearing blocks J in the frame D and are normally held apart by spring K. Coarse adjustment is provided by wedges E, one of which is moved transversely of the slideway by screws B, C. The temperature of the block G is varied by a heating element F surrounding the frame D and thermal insulation is provided by an intermediate block I. The block G is maintained at an adjustably selected temperature measured by resistance elements H recessed into the block G and forming part of a resistance thermometer circuit controlling the supply of electricity to the heating element F.
Patent GB-761438-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N5/16
Filed: 1953-05-15
Abstract: 761,438. Television. TELEFUNKEN GES., [formerly TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE]. May 15, 1953 [May 15, 1952], No. 13613/53. Class 40 (3). The black level of a reproduced television picture is maintained constant despite variation of the brightness or contrast controls. In the arrangement shown in Fig. 2, the received video signals from amplifier 2 are supplied to the control grid of the picture reproducing tube 4 with the synchronizing pulses extending in the " blacker-than-black " direction and a diode 5 operates in conventional manner to maintain these pulses at a fixed level. The received signals are also supplied to the grid of valve 1 which is rendered conducting during vertical " flyback " periods by means of a positive pulse applied to its anode from the vertical scanning generator 7 (or by other suitable means) and generates a bias voltage across the R.C. network 9, 10 the time constant of which is long compared with the vertical trace period. This bias, which varies in the same way as the (amplitude of the) synchronizing pulses, is then fed to the cathode of the picture tube and maintains the potential difference between the cathode and the control grid substantially constant despite variations in the amplitude of the video signals arising from adjustment of the contrast or brightness controls. The voltage across resistor 9 may also be employed for automatic gain control.
Patent GB-272472-A (GB)
Title: Improvements in electric ignition apparatus for explosion engines
IPC: H02K21/38
Filed: 1927-05-20
Abstract: 272,472. Scintilla Akt.-Ges. June 12, 1926, [Convention date]. Inductor-machines. - An ignition generator comprises a stationary magnet a, stationary generating coils and a rotary inductor e providedat its ends with uniformly grooved pole discs d which lie opposite the similarly grooved polepieces b of the magnet and the grooves of one pole-piece are angularly displaced by half the pitch of the grooves relatively to the grooves of the other pole-piece at the same end of the apparatus; a large number of current impulses. accordingly is generated per revolution (twentyfour in the example shown) but the interrupter is arranged to open a fewer number of times depending upon the number of engine cylinders. The magnet pole-pieces are carried by magnetic yokes c situated at the magnet poles, and theupper and lower pole-pieces have respectively six and seven teeth m. The generating coils are wound around the inductor e and in the position shown, the flux traverses the coil from the left hand lower pole-piece to the right hand upper pole-piece, but when the inductor is rotated through half a tooth pitch, the direction of the flux through the coil is reversed. The magnetic circuit with the exception of the magnet c is preferably laminated, or the inductor may consist of wires or compression iron filings, and an electromagnet may be substituted for the permanent magnet shown. The pole-pieces band yokes c may be cast in non-magnetic metal or in an insulating material which may form the coil carrier. The generating coils may be wound on one or both of the yokes c and the inductor may be adjustable on the shaft by automatic or other means so as to vary the timing.
Patent GB-1520603-A (GB)
Title: Chromogenic compounds
IPC: C09B11/00
Filed: 1976-04-05
Abstract: 1520603 Chromogenic compounds NCR CORP 5 April 1976 [10 April 1975] 13645/76 Heading C4P The invention comprises chromogenic compounds having the general formula wherein E is an o-phenylene or 2,3-naphthylene radical optionally substituted by alkyl, monotetra-chloro- or -bromo-, nitro or dialkylamino substituents, 1,8-naphthylene optionally substituted by nitro; or a 2,3- or 3,4-pyridyl radical, R 1 -R 6  are H, alkyl, optionally substituted phenyl, benzyl, acyl or cyclohexyl group provided that both R 1  and R 2  or R 3  and R 4  or R 5  and R 6  are not simultaneously phenyl, R 7  and R 8  are H, halogen, alkyl, alkoxy, mono- or dialkylamino, amino, or acylamino and the alkyl groups and alkyl moieties have less than seven carbon atoms. They are prepared by reacting a compound of the general formula wherein E is as above with an aminophenol substituted by R 1  and R 2  and then reacting the keto acid obtained with a 1,1-bisaminophenyl ethylene compound substituted by R 3 -R 8 . The compounds are used in pressure and heat sensitive recording materials.
Patent GB-1336268-A (GB)
Title: Sintered mouldings
IPC: C22C33/02
Filed: 1972-03-23
Abstract: 1336268 Sintered iron-base mouldings ROBERT BOSCH GmbH 23 March 1972 [26 Aug 1971] 13699/72 Heading C7A A sintered moulding is produced by sintering a powder mixture consisting, in weight per cent, of:- 0. 5 to 3% tin 2 to 14% copper balance iron, the weight ratio of tin to copper being between 1:2 and 1:9. Sintering is preferably effected at 900 to 1100C for 20 to 60 minutes. The resulting moulding may be heat treated by immediately after sintering, (a) cooling at a rate of at least 15C/min to a temperature between 520 and 750C and quenching, (b) cooling slowly to room temperature. Then tempering at 520 to 750C and quenching, (c) cooling to 300C or below at a rate of at least 27C/minute. Methods of producing sintered mouldings from mixtures as above in which the weight ratio of tin to copper is from 1:3, 5 to 1:4.5, which form the subject-matter of Specification 1336269, are disclaimed where no heat-treatment is involved.
Patent GB-459102-A (GB)
Title: Improvements relating to electrically controlled spring driven clocks
IPC: G04C1/06
Filed: 1936-05-15
Abstract: 459,102. Clocks. FABRIK ELEKTR. APPARATE F. SAUTER AKT.-GES., Basle, Switzerland. May 15, 1936, No. 13817. Convention date, May 18; 1935. [Class 139] In a spring driven clock continuously synchronized by a synchronous motor, the mainspring 1 drives the escapement 6, 7, 8 through gearing 3-5<1> and through a pinion 18<11> drives the sun-wheel 18<1> of a differential mechanism 17. The other sun-wheel 16<1> is driven by a synchronous motor 12 through gearing 14, 14<1>, 15, 16. Normally the planet wheel 19<1> rotates idly, but if the clock is running fast or slow, then the planet wheel 19<1> rotates the casing 17 through shaft 19, and through gearing 20, 11, 10 and a rack 9<1> adjusts the regulator arm 9. Should the current fail a coupling between shafts 15, 16 is disengaged to prevent rotation of the differential casing 17. The coupling comprises an axially slidable disc 22, pins 29 on which normally engage in holes in a disc 21, the discs being normally held in engagement by a magnet 23 in series or parallel with the motor 12. When the current fails, armature 24 is released and lever 25 pivoted at 26 is retracted by a spring 28 to withdraw the disc 22 from disc 21. Alternatively, the coupling 21, 22 may be interposed between the differential mechanism and the clock movement or the escapement regulator. The mainspring 1 may be wound by the synchronous motor 12, the motor shaft 13 being coupled to the winding arbor 12<1>. In this case the outer end 1<1> of the mainspring is arranged to slip to prevent overwinding. Alternatively, the main spring may be wound by hand, an electromagnet, or by a separate motor.
Patent GB-969802-A (GB)
Title: Device for controlling the rolled product in rolling mills
IPC: B21B41/06
Filed: 1962-04-11
Abstract: 969,802. Rolling. F. MOELLER, and K. NEUMANN, [trading as VERWALTUNGS-- GESELLSCHAFT MOELLER & NEUMANN oHG]. April 11, 1962 [April 12, 1961], No.. 13963/62. Heading,B3M.. A device for hindering the whip of a rolled product passing in a loop between two roll frames includes a regulating device which is responsive to the variable size of the loop and controls the displacement of a whip absorbing wall. A wall` 6 is mounted, with an inclined guide 21, on a motor driven carriage 12 moving on rails 10 and 11 of a table 5. Guide channels 3 and 4 for the rolled product are provided on the table. The position of a loop of the rolled product, after it moves over the guide 21 towards the wall 6, is sensed by photo-electric or other sensors 23 and 24, activation of either sensor causing a regulator 26 to control a motor 17 which moves the carriage 12 to keep the loop of the product between the two sensors. When no signal is given by either sensor the carriage 12 travels slowly towards the roll stands 1 and 2. When the product has been rolled, and a photo-electric cell 29 thus gives no reading the trolley rapidly returns, to its starting position. Instead of sensors 23 and 24 a number of spaced conducting plates may be situated along the centre of the table, the plates controlling movement of the carriage in response to the position of the loop as before.
Patent GB-1502325-A (GB)
Title: Bite indicator
IPC: A01K97/12
Filed: 1976-04-02
Abstract: 1502325 Bite indicators J R DAWS 2 April 1976 [4 April 1975] 13996/75 Heading A1A The indicator which comprises a pivoted pointer 13 visible through a window 11a in a container 11 and having an end 13a adapted to support a rod line, is characterised in that the pointer is held in the shown position by a magnet 16 which can be moved in tube 17 to apply an adjustable force on the pointer. The rod can be supported on the container and is arranged so that when the line is tensioned, the pointer is pulled away from the magnet, bolts 19, 19a being suitable for attaching the container to a bank stick with the pointer in either the vertical or horizontal position. An audio or visual alarm can be plugged in at 22 to operate when the pointer breaks contact with bolt 10. In an embodiment (Fig. 5) the magnet and an electric socket 23 are housed in a plastics container 11 with the pointer 13 pivoted on a support 26, arm 13b having an electrical contact 28 and arm 13a, which supports the line, having a weight 32 which can be arranged to strike support 26 on pivoting of the arm to give another audible warning. The pointer can be coated with luminous paint.
Patent GB-495836-A (GB)
Title: Improvements in and relating to hydraulically operated machine tools
IPC: B23Q5/06
Filed: 1937-05-20
Abstract: 495,836. Hydraulically - operated machine-tools. TRIGGS, W. W. (Lapointe Machine Tool Co.) May 20, 1937, No. 14033. [Class 69 (ii)] A hydraulically-actuated broaching-machine comprises a cylinder 11 containing a piston 12, the rod 13 of which works over a fixed hollow tube 15; a reversible output pump P is provided. During the return stroke, the pump P delivers through 21, 23, 26, 27 to the interior of the tube 15 ; liquid displaced from the cylinder 11 to the left of the piston 12 escapes through 24, part going to the intake of the pump by 22, 20 and the remainder going by 25, 28 to the cylinder 11 to the right of the piston 12 ; the valve 30 controlling the passage 25 is held open by pump pressure acting through 33 on a piston 31. Liquid also passes into the cylinder 11 to the right of piston 12 from a reservoir T by non-return valve 55 and passage 44. On the working stroke, the pump delivery passes by 20, 24 to the cylinder 11 to the left of piston 12, valve 30 now closing under pump pressure acting through 34 on the piston 31 and aided by a spring 35. Liquid displaced from the tube 15 goes by 27, 26, 23, 21 to the intake of the pump ; some of the liquid displaced from the cylinder 11 to the right of piston 12 also goes by non-return valve 46 to passage 27 and thence to the pump intake ; the remainder goes to the reservoir T by passage 44 and back-pressure throttle valve 64 which can be adjusted to vary the opening, but which is not . moved by the pressure of the liquid in the system. A make-up valve 41 is also provided.
Patent GB-1133853-A (GB)
Title: Production of benzimidazole oxides
IPC: C07D277/56
Filed: 1966-03-30
Abstract: 1,133,853. Benzimidazole oxides. MERCK & CO. Ltd. 30 March, 1966 [19 Aug., 1965], No. 14073/66. Heading C2C. Benzimidazole oxides of the formula wherein R is a five-membered heterocyclic radical containing nitrogen and sulphur and R 1  and R 2  are each hydrogen or halogen atoms or C 1-5  alkyl, phenyl, halophenyl, thienyl, C 1-5  alkoxy, C 1-5  alkylthio, phenoxy, or phenylthio groups, provided that when both R 1  and R 2  are other than halogen at least one of R 1  and R 2  is hydrogen, are obtained by treating nitroaniline compounds of the formula with a strong base in a solvent capable of dissolving the base. The o-nitroanilines used above are obtained by treating chloronitrobenzenes with methylamine derivatives R-CH 2 -NH 2 .
Patent GB-676336-A (GB)
Title: Improvements in or relating to cinematograph film sprockets
IPC: G03B1/50
Filed: 1950-06-07
Abstract: 676,336. Kinematograph projectors. PAILLARD SOC. ANON. June 7, 1950 [July 15, 1949], No. 14196/50. Class 97 (i). [Also in Group XXIV] A film sprocket is detachably secured to its spindle, but has driving connection therewith, and associated guide rollers are carried on a support slidable on the projector wall and detachable at the end of the sliding movement, which part of the movement is, however, prevented by the sprocket when in position. As shown, the shaft 1 runs in a bearing 3 in the wall 4 and carries a collar 6 with dogs 7 engaging apertures 8 in the sprocket 2. A spring- loaded ball detent 11 engages one edge 13 of a groove 10 to urge the sprocket inwardly on the shaft. The guide roller support 15 has a lug 16 slidably mounted on the wall 4 by headed screws 18 passing through slots in the lug. Ball detents in the wall 4 and recesses in the lug define two positions of the support wherein, respectively, the rollers 14 are engaged with the sprocket and withdrawn for film threading. When the sprocket is removed the support 15 can be slid further to a position where the heads of the screws 18 register with enlarged portions of the slots to enable the support to be removed.
Patent GB-539881-A (GB)
Title: Improvements in time delay electric switches
IPC: G04F3/06
Filed: 1940-09-16
Abstract: 539,881. Actuation of switches. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 16, 1940. No. 14226. Convention date, Sept. 16, 1940. [Class 38 (v)] In a device adapted to operate a mercury or other switch after a predetermined time, energization of an electromagnet 33 moves a rack 15 into driving engagement with a motor 23 which is simultaneously energized, the rack 15 after a period of lost motion engaging a projection 47 on the switch, operating the latter, and stopping the motor. Resetting is effected by breaking the circuit to the electromagnet 33. when a spring causes the rack 15 to pivot about the projection 47 out of clutching engagement with a driving pin 27 of the motor and then to descend by gravity being guided by a fixed slot 14. The initial position of the rack, and hence the time-delay is determined by a pin 57 engaging one of a number of holes 56 and coming to rest against a bracket 12b. Specification 454,342 is referred to.
Patent GB-856364-A (GB)
Title: Method and device for the manufacture of cellular glass
IPC: C03C11/00
Filed: 1958-05-05
Abstract: 856,364. Cellular glass. SCHILL, F., and KONAREK, F. May 5, 1958 [May 28, 1957], No. 14262/58. Class 56. Cellular glass is produced by heating a mixture of pulverized glass and a foaming or gassing agent in heat resisting moulds to a temperature between 500 and 750‹C. to sinter the mixture, further heating to between 800 and 850‹C. to foam the mixture, cooling quickly to between 400 and 500‹C. to solidify the surface of the cellular block to prevent its shrinkage and finally tempering at between 620 and 660‹C. to stabilize the block. The process may be carried out within a tunnel furnace comprising three directly adjoining zones. namely, a frothing zone 1, a cooling zone 2, and a stabilization zone 3, the moulds 9 containing the frothing mixture passing continuously on roller track 13 through said zones. The frothing and stabilization zones are heated so as to keep the covers of the moulds always 10 to 30‹C. cooler than the bottoms of the moulds, while the cooling zone is not heated. Zones 1 and 3 consist of fireclay bricks 4, insulated at the outside by bricks 5, providing with suitable heating devices 14, 15, e.g. gas or oil burners, or electric heaters, the cooling zone 2 being made of a sheet metal casing 6, without a heating device, provided at the top, sides, and if required, at the bottom, with ventilation flaps 7. The cooling zones is separated from the frothing and stabilization zones by fireclay gates 8 reaching closely to the covers of the moulds.
Patent GB-1009814-A (GB)
Title: Clutch and control therefor
IPC: F16D43/286
Filed: 1964-04-08
Abstract: 1,009,814. Controlling clutches. FORD MOTOR CO. Ltd. April 8, 1964 [April 29, 1963], No. 14424/64. Heading F2L. The magnitude of the engaging pressure applied to an annular piston 34 of a friction disc clutch 20, between input and output shafts 10, 12 on a motor-vehicle, during engagement is controlled by an accelerator-operated valve 128 providing a torque-demand signal pressure 118 responsive to engine throttle setting, opposed by a torque-sensitive pressure 82 provided by a rotating regulator-valve 56 variably loaded in response to yield of springs 80 which transmit the drive from the freely mounted output-member 48 of the clutch to a spider 50 fast on the output shaft 12. The torque-demand and torque-sensitive pressures 118, 82 act on opposite sides of the loading piston 92 of a torque modulating valve 88 which meters modulated clutch engaging pressure 46 from an input driven pump P. At above a predetermined vehicle speed an output driven governor valve 136 applies pressure 126 to shift leftwards a transition valve 108 which cuts off torquedemand pressure 118 from and applies full pump-pressure 124 to the modulator valve piston 92 which is thereby moved fully left to apply full pump pressure to the clutch engaging line 46. The clutch is engaged by depression of the accelerator 130 and is disengaged just before the vehicle is stationary by insufficient pump pressure to engage the clutch, allowing spring 38 to disengage the clutch plates.
Patent GB-1529126-A (GB)
Title: Ypsilon-(phenoxy or pyridyloxyphenoxy)valeric acid derivatives herbicidal compositions containing them and methods for their use
IPC: C07C59/125
Filed: 1977-04-05
Abstract: 1529126 Phenoxy- or Pyridyloxyphenoxyvaleric acid derivatives ISHIMARA SANGYO KAISHA Ltd 5 April 1977 [14 April 1976] 14444/77 Heading C2C Phenoxy- or pyridyloxy-phenoxyvaleric acid derivatives of general formula wherein X is 4-trifluoromethylphenyl-, 2-chloro- 4-trifluoromethylphenyl-, 5-chloropyridin-2-yl- or 3,5-dichloropyridin-2-yl and R is OH, -O- cation, a C 1-4  alkoxy, C 1-4  alkylthio, benzyloxy or an amino group optionally substituted by C 1-4  alkyl group(s), phenyl or pyridin-2-yl groups are prepared by either (a) reacting a phenol of formula with a lactone  in the presence of a base to give a compound with R = -O-cation, are optionally converting it by known methods to the free acid or (b) reacting a compound X-Hal with a compound of general formula where Hal=halogen and R<SP>1</SP> = C 1-4  alkoxy, C 1-4  alkylthio, benzyloxy or optionally substituted amino. Amongst numerous examples the compounds y-[4-(4-trifluoromethylphenoxy)- phenoxy] valeric acid ethylthioester and N-2- pyridyl - γ - [4 - (3,5 - dichloropyridyl - 2 - oxy)- phenoxy] valeramide are produced. Herbicidal compositions comprise an effective amount of at least one compound of Formula I as active ingredient with one or more agriculturally acceptable adjuvants.
Patent GB-741931-A (GB)
Title: Improvements in and relating to electroluminescent materials
IPC: H05B33/14
Filed: 1952-06-09
Abstract: 741,931. Electroluminescent materials. SYLVANIA ELECTRIC PRODUCTS, Inc. June 9, 1952 [June 8, 1951], No. 14497/52. Class 39 (1). An electroluminescent material comprises zinc sulphide which is activated with copper (0.0015 mol. or less) and lead (0.000004 mol.) and is substantially free from zinc chloride, i.e. contains less than 0.05 per cent. There may be more of the elements in the starting materials. Zinc sulphide 0.9 mol. and 0.1 mol. of zinc oxide (or zinc carbonate or hydroxide) are fired with lead carbonate and cupric oxide at 1720‹ C. in an inert atmosphere, and the mixture treated with ammonium acetate or dilute acetic acid to remove excess zinc oxide. Double firing is stated to be beneficial. The use of zinc oxide in the starting materials is not essential. Specifications 731,345 731,365, and 735,752 are referred to.
Patent GB-1499569-A (GB)
Title: Leak-detection apparatus and liquid level determination
IPC: G01F23/296
Filed: 1975-04-09
Abstract: 1499569 Liquid level monitor TEXACO DEVELOPMENT CORP 9 April 1975 14504/75 Heading G1G A liquid level variation detector operates by transmitting acoustic energy through the liquid to a partially immersed receiving transducer which  has a geometric configuration such as to produce a resonant condition at a predetermined amount of immersion. The electrical output signal of the transducer varies in dependence on the amount of immersion. In the Fig. 1 embodiment for detecting leaks in a large tank, a housing 15 of a material (e.g. PTFE) with an acoustic impedance matched to that of the liquid 12 (e.g. a petroleum product) is suspended at 16 or otherwise fixed to be partly immersed. Liquid 12 enters the housing through a passage 27 which is then shut off by a solenoid valve 30 after the levels inside and outside the housing have been equalized. Vents 48 ensure that ambient conditions above the liquid are the same inside and outside the housing. An immersed annular PZT transducer 35 on a lead baffle plate 36 transmits ultrasonic energy to partly-immersed hollow-cylindrical PZT transducer 41, at or near a resonant frequency of the assembly. The amplitude of the received signal is recorded. After two hours or so valve 30 is opened and, if a tank leak is present, liquid will flow out to equalize the levels again. The level change inside the housing varies the signal being recorded, which may be calibrated to determine the amount of leakage. The Fig. 5 embodiment for continuous monitoring of liquid level variation uses two housings 82, 83 with associated parallel-energized transmitting transducers. Housing 82 is vented at 88 whereby the liquid level variation inside follows that outside; whereas housing 83 can be shut off by solenoid valve 85. A bridge circuit is used to record the peak difference between the signals of the two receiving transducers. In a modification the ultrasonic frequency is swept and variations in the resonant peak amplitude with changes in liquid  level are recorded.