baber/WOPTO huggingface dataset:
Patent GB-1059008-A (GB)
Title: Improvements in or relating to air filters
IPC: B01D46/00
Filed: 1965-12-20
Abstract: 1,059,008. Air filters. LUWA A.G. Dec. 20, 1965 [Dec. 29, 1964], No. 53850/65. Heading B1T. [Also in Division D1] A filter for removing entrained fibres and dust from an air stream comprises a filter element 3 of curved form which is periodically cleaned by oscillating scraper 11, scraper 11 pushing separated material into one or other of chambers 14, 17 located at the ends of its stroke and chambers 14, 17 having means 15, 16 for compressing the material and discharging it. As shown, element 3 is a copper gauze or perforated sheet of semi-cylindrical form with impervious end walls (6), (7) and an inlet duct 2, 9. Air is drawn through element 3 by a fan 34, 35 and the cleaning operation is initiated by a pressure sensing device 47 or by a timer. In cleaning, scraper 11, mounted on shaft 28, is turned through 180 by a pneumatic motor (32) (Fig. 1, not shown), after which a second pneumatic motor (55) reciprocates plate 15 for a period, the saw-toothed profiles of scraper 11 and plate 15 causing the compressed material in chamber 14 or 17 to be pushed against and then through spring loaded outlet door (25). Downstream of fan 34 a disc shaped filter element 37 is rotated by a motor (41) and is cleaned by a radial nozzle 44 whose conduit (45) leads back to suction inlet 2. In modifications, not shown, members 11, 15 may be operated manually, hydraulically or electrically or chambers 14, 17 may simply be emptied by hand after removing covers. A portion of incoming air may empty chambers 14, 17 pneumatically, or door (25) may be replaced by a mechanically opened cover or an array of three co-operating rollers. Element 3 may collect material on its outer, convex surface and end walls (6), (7) may also effect filtering, alternatively element 3 may be of conical form and may be located downstream of the fan. Element 37 may be fixed and engage a rotating suction head. When used to clean air extracted from suction points on a spinning frame, the filter is located in the middle of the machine, to shorten the suction ducts.
Patent GB-1122100-A (GB)
Title: Method and apparatus for applying tension to a cable
IPC: E04C5/08
Filed: 1966-12-01
Abstract: 1,122,100. Stretching. C. F. & I. STEEL CORP. 1 Dec., 1966 [17 Dec., 1965], No. 53931/66. Heading B3E. [Also in Division D1] Apparatus for applying tension to a cable 23 comprises small and large sheaves 14, 20 and 16, 22, respectively, means for rotating the sheaves at the same angular velocity; a tensioning guide 24 over which the cable is to be passed from the small sheave to the large sheave and which is mounted for movement relative to the sheaves, means 30 for applying a constant force to the tensioning guide 24 whereby cable 23 passed from the small to the large sheave is maintained under minimum constant tension, and a heater 36 disposed for heating cable passing from the small to the large sheave. The apparatus functions to elongate and stabilize stranded cable by causing the wires from which it is formed to straighten and conform to a helical pattern and by imparting a reduced tendency to vary from the helical pattern when the tension is removed. During reverse operation of the apparatus, as when changing reels, the rotation of the sheaves is reversed and the guide 24 serves to take up excess cable while maintaining a minimum predetermined tension thereon.
Patent GB-1381340-A (GB)
Title: Fibres of syndiotactic vinyl chloride polymers
IPC: C08F214/00
Filed: 1972-11-22
Abstract: 1381340 PVC fibres BAYER AG 22 Nov 1972 [26 Nov 1971] 54013/72 Heading B5B [Also in Division C3] Fibres are formed from a vinyl chloride polymer having a vinyl chloride content above 85%, a viscosity number of 2À0-2À9 and a syndiotacticity index of 2À1-2À5 (see Division C3). The fibres are spun from gel-free solutions in cyclohexanone containing 15-20% of polymer by a wet or dry spinning process. In the wet process the solution at 130-150‹ C. is spun into a bath consisting of water and cyclohexanone optionally with a solubilizing agent, e.g. isopropanol, or water and a glycol or glycol ether. The threads are washed, stretched in two stages, heat fixed under tension and shrunk in water. In the dry process the solutions at 100-120‹ C. are spun into a shaft heated with air at 150-220‹ C. and further treated as above.
Patent GB-1236804-A (GB)
Title: High molecular weight elastomeric polyazo compounds
Inventor: RADLMANN EDUARD
IPC: C08G18/83
Filed: 1968-11-14
Abstract: 1,236,804. Elastomeric polyazo compounds. FARBENFABRIKEN BAYER A.G. 14 Nov., 1968 [14 Dec., 1967], No. 54084/68. Heading C3R. Elastomeric polyazo compounds suitably containing the recurring structural unit wherein Ar is a bivalent aromatic radical, X is a -CO-, -NH-CO-, -NHCS-, -NHCO-NH-R<SP>1</SP>-NH-CO- or -O-CONH-R<SP>1</SP>-NH-CO- radical wherein R<SP>1</SP> represents the bivalent radical of an organic diisocyanate without the isocyanate groups, R is the bivalent radical of a linear aliphatic polymeric compound selected from a polyester, polyether, polythioether or a polyacetal without the terminal hydroxyl groups, or a radical of the formula wherein R<SP>1</SP> is as above and R<SP>11</SP> has the same definition as R and n represents 0 or an integer from 1 to 10, the linear polymeric compound having a M.W. of 500 to 5000, and the polyazo compound having a solution viscosity above 50 poises as measured on a 20% solution in dimethylformamide at 20 C., may be prepared by oxidative coupling of linear aliphatic polymeric compounds which are polyesters, polyethers, polythioethers and polyacetals and which contain primary aromatic terminal amino groups and optionally urethane, thiourethane or urea groups, the oxidative coupling being effected at 15 to 100 C. in a polar organic solvent and in the presence of (a) a catalyst system composed of a copper salt and a basic organic compound containing a tertiary nitrogen atom, and (b) oxygen. The oxidative coupling may also take place in the presence of low molecular weight primary aromatic diamines. Suitably the aliphatic polymeric compound containing aromatic terminal amino groups is prepared by reacting the corresponding polymer containing terminal hydroxyl groups with nitroaryl carboxylic acids, nitroaryl isocyanates, nitroaryl carbamic acid chlorides or nitroaryl isothiocyanates followed by reduction of the nitro groups to amino groups. Alternatively the aliphatic polymeric compound containing hydroxyl groups may be reacted with excess of a diisocyanate and the isocyanate groups still present are reacted with aromatic diamines, nitroaryl amines, nitrophenols, nitroaryl alcohols or nitroaryl carboxylic acids, followed by reduction of the nitro groups, if present. The catalyst system is suitably a mixture of cuprous chloride and triethylamine, dicyclohexylmethylamine, N,N,N<SP>1</SP>,N<SP>1</SP> - tetramethyl ethylene diamine and pyridine or a cyclic amidine. Suitable solvents are dimethyl formamide, N,N-dimethyl acetamide or N-methyl pyrrolidone. Air is suitably used as the source of oxygen. In a typical example 4-isocyanato-4<SP>1</SP>-nitrodiphenyl ether is reacted with polypropylene oxide, the melt is dissolved in dimethyl formamide and hydrogenated and then oxidatively coupled using a cuprous chloride/pyridine catalyst system.
Patent GB-1185019-A (GB)
Title: Improvements relating to Protective Coatings and Anti-Corrosion Treatments
Inventor: ROPER MICHAEL DWIN
IPC: C23C22/37
Filed: 1966-12-07
Abstract: 1,185,019. Passivating metal surfaces. ELECTRO CHEMICAL ENG. CO. Ltd. Feb.21, 1968 [Dec. 7, 19661, No. 54743/66. Heading C7U. Zn, Cd or Sn surfaces are passivated by treating in a solution containing hexavalent Cr, nitrate ions, an inorganic acid sulphate ions and a salt of Ti and/or Zr. The surface may be a coating of Zn, Cd or Sn on iron or steel e.g. electro-deposited Zn. The solution may also contain boric acid, sodium nitrate fluoride, zinc ions as the chloride or nitrate. Nitric acid is the preferred acid and the Ti and Zr may be added as the fluozirconate, fluoride, sulphate, nitrate or oxalate, the tetravalent salt being preferred. The preferred concentrations in gms/ litre are:- Cr<SP>+6</SP> 0À175 to 5 as CrO 3  0À280 to 8À1 as Na 2 CrO 4  F- 0À475 to 13À7 as Na F SO 4 <SP>-</SP> 0À075 to 2À16 as (NH 4 ) 2 SO 4  Acid 3À55 to 42À6 as HNO 3  70% solution. Zn salt # 0À2 to 10 as Zn (NO 3 ) 2  6H 2 O # 0À044 to 2À2 as Zn<SP>2+</SP> Zr salt # 0À1 to 6À2 as K Zr fluoride # 0À032 to 2 as Zr<SP>4</SP> <SP>+</SP> Ti salt # 0À1 to 5 as KTi fluoride # 0À02 to 1 as Ti<SP>4+</SP>
Patent GB-1213476-A (GB)
Title: A mobile working machine
Inventor: FRITZMEIER RUPERT
IPC: B60R21/13
Filed: 1967-12-04
Abstract: 1,213,476. Protecting guards. R. FRITZMEIER. 4 Dec., 1967 [2 Dec., 1966], No. 55037/67. Heading B7B. A rigid protecting frame member 1 of a tractor has a relatively thin cover 4 secured to it so that on overturning of the tractor the cover 4 will crush to absorb the impact. Further resistance is offered by the crushable walls 12 of the channel 14, by corrugated sheets or members telescoping under controlled resistance.
Patent GB-1318015-A (GB)
Title: Radio-receiver
IPC: H04W88/02
Filed: 1971-11-29
Abstract: 1318015 Radio signalling TEKADE FELTEN and GUILLEAUME FERNMELDEANLAGEN GmbH 29 Nov 1971 [27 Nov 1970] 55352/71 Heading H4L A mobile radio receiver responsive to a calling signal consisting of a sequence of audio frequencies followed by an identification signal is provided with means dependent on the condition of the received identification signal to indicate whether suitable reception conditions prevail at the receiver. As described, the calling signal consists of six frequencies in the range 313 to 1063 Hz., each frequency being transmitted for a period of 100 ms. so that the complete code lasts 600 ms. and after an interval of 200 ms. the identification signal of 1153 Hz. is transmitted for not less than 200 ms. and the sequence repeated. The received signal is demodulated at D and supplied via a low pass filter TP to a limiting amplifier B, the identification signal being selected by a filter PZ, rectified at G (voltage U 0 ) and supplied to a comparator 1 operating as a Schmitt trigger. The audio frequencies forming the calling signals are utilized in conventional manner not described. If the voltage U 0  exceeds a reference voltage in the comparator 1, i.e. the reception field strength is adequate, the circuit triggers and the resulting voltage U 1  is fed to a timing circuit 2, a NOR gate 4, a differentiator circuit 5 and a second timing circuit 7. Timing circuit 2 provides a voltage U 2  which after the disappearance of voltage U 1  is maintained for the period of a call, i.e. 600ms. and is supplied to the NOR gate 4 which provides no output U 4  as long as at least one of the input voltages is present. If after completion of a call the identification signal is not received, the resulting voltage V 4  is integrated at 9 to operate a device via terminal K indicating that reception conditions are not adequate. Voltage U 2  is also supplied to a pulse forming circuit 3 producing a pulse U 3  which is supplied via gate 8, if it is conducting, to the integrator 9. At the start of voltage U 1  the differentiator 5 produces a pulse which via switch 6 causes circuit 7 to enable gate 8 for the normal duration of voltage U 1  (which must be at least 200 ms.). At the end end of this period gate 8 is blocked if the voltage U 1  disappears because a call is transmitted so that voltage U 3  cannot reach the integrator 9. If voltage U 1  disappears before the 200ms. has elapsed, e.g. due to fading when the vehicle is moving, gate 8 remains conducting and pulse U 3  causes the integrator 9 to operate the warning device.
Patent GB-1129920-A (GB)
Title: Catch arrangement
Inventor: DEVONSHIRE THEODORE
IPC: E05B65/19
Filed: 1966-12-22
Abstract: 1,129,920. Remotely-controlled fastenings; stud and socket fastenings. FORD MOTOR CO. 22 Dec., 1966, No. 57550/66. Headings E2A and E2B. Means for releasably fastening two members 11, 12 together comprises a headed plunger 17 on one member, a catch plate 32 movably mounted on the other member to permit the head 18 of the plunger to move behind the catchplate 32 into fastening engagement herewith, the plunger 17 being movable axially in the first member 11 by means of a lever 22 in such a direction as to pull the first and second members together by means of the catch plate 32 and the head 18 of the plunger 17. As shown, in which the members 11, 12 are parts of a vehicle cab and vehicle framework respectively the head 18 of the plunger 17 is retained in a hole 31 in the member 12 by means of the catch plate 32 which is provided with a key hole slot 37 and which is loaded by a spring 38 in the direction in which the head 18 is trapped beneath the catchplate. Movement of the handle to the position shown, cams the members 11, 12 towards each other against a spring 24 and a rubber pad 16 between the members. A stop plate 41 prevents withdrawal of the catchplate to free the head 18 until the handle has been raised and the plunger lowered. The catch plate is remotely operated by a cable 39 outside the cab.
Patent GB-1204188-A (GB)
Title: Method for making image pick-up screens for x-ray image intensifier tubes
Inventor: SPICER WILLIAM EDWARD
IPC: H01J9/12
Filed: 1967-12-19
Abstract: 1,204,188. Image intensifier tubes. VARIAN ASSOCIATES. 19 Dec., 1967 [27 Dec., 1966;(2) 10 Aug., 1967; 25 Aug., 1967 (2)], No. 57676/67. Heading H1D. The pick-up screen of an X-ray image intensifier tube is made by the evaporation in vacuum of an alkali metal halide, 16, e.g. CsI, NaI, LiI, KI, CsBr or RbI, on to a curved X-ray transparent substrate 6, e.g. of conductive glass or aluminium such that the evaporated screen has a density about the same as that of the bulk alkali metal halide. The alkali metal halide and its activator material, e.g. T1I, NaI or LiI when CsI is used, may be simultaneously evaporated, e.g. by flash evaporation on to the substrate either from separate or the same sources within the vacuum, Figs. 2, 3, 15 (not shown). If evaporated from the same source the mixture therein is so chosen that, taking into consideration the different rates of deposition due to the different vapour pressure of the two materials, the required final mole ratio is obtained (which may be different from that in the original mixture). Alternatively, the activator may be deposited over the alkali metal halide scintillator and subsequently diffused into the alkali halide layer. A photocathode layer 9, e.g. of Cs3Sb, Rb 3 Sb, K 3 Sb, Sb-K-Na-Cs, Sb-KNa or Cs-Te, may be deposited either directly over the X-ray sensitive scintillator layer 16 or over an intermediate buffer layer 8, e.g. of magnesium oxide, aluminium oxide or lithium fluoride. When buffer layer 8 is absent the photocathode/X-ray scintillator interface may be doped with a p-type dopant such as ThI or I to increase the quantum efficiency of photoemission, in particular in the blue region, Fig. 8 (not shown). As shown in Fig. 13 backscatter of photons produced in the scintillator 16 by incident X-rays (including γ-rays and other correspondingly high energy radiation) is prevented by forming a non-specular backing surface 321 at the substrate/scintillator interface by roughening the substrate surface. Alternatively a thin anodized aluminium film may be formed or the substrate coated with a light-absorptive layer, e.g. of carbon. In forming the photocathode in one embodiment, alternate K and then Sb layers followed by alternate Cs and Sb layers ending with Cs, which may be activated with O 2 , are laid down to optimize the photoemission. A potential gradient may be set up between the photocathode 9. and the conductive substrate 6 to further improve the efficiency, Fig. 9 (not shown).
Patent GB-584093-A (GB)
Abstract: 584,093. Interrupters. BRITISH THOMSONHOUSTON CO., Ltd., and GRIFFITHS, L. Dec. 7, 1944, No. 24533. [Class 38 (v)] [Also in Group XXXV] A magneto interrupter having a cam operated contact arm has the stationary contact and a cam lubricating wick mounted in a common pad secured to the body of the machine. As shown, the adjustable stationary contact 10 and the wick 13 are secured in the pad 11 which is shaped so as to shield the contacts from cam lubricant. An insulated conductor 14, fixed by the central condenser terminal 21 and a clip 18, carries a spring 9 and conductor 16 which are also fixed to the contact arm. Either the fixed or movable contact may be earthed.
Patent GB-1249834-A (GB)
Title: A brake block for bicycle rim brakes
IPC: B62L1/00
Filed: 1969-11-28
Abstract: 1,249,834. Brake blocks. BRIDGESTONE CYCLE KOGYO K.K. 28 Nov., 1969 [15 Aug., 1969], No. 58416/69. Heading F2E. A brake block for bicycle rim brakes comprises a body 4 of resilient rubber material with a friction contact surface 5 and having a plurality of parallel, mutually spaced, laterally extending holes 6 adjacent the friction contact surface 5, each hole being open at both ends only thereof or one end only (Figs 6 to 7C, not shown) at the sides or side of the body respectively. In the latter case alternate blind holes open from opposite sides of the body.
Patent GB-1195660-A (GB)
Title: Process for Producing Highly Crystalline Polyolefins
Inventor: SUGIURA SHOTARO
IPC: C08F10/00
Filed: 1968-12-11
Abstract: 1,195,660. Crystalline polyolefins. UBE INDUSTRIES Ltd. 11 Dec., 1968, No. 59020/68. Heading C3P. Crystalline polyolefins are prepared by polymerizing C 3-6  olefins in the presence of a catalyst consisting of (a) a titanium trihalide, (b) an organoaluminium compound such as triethylaluminium or diethyl aluminium halide and (c) a triphosphite of formula (R<SP>1</SP>3) 3 P wherein R<SP>1</SP> is a hydrocarbon group of 1-20 carbon atoms, or a trithiophosphate of formula (R<SP>13</SP>) 3 PO. The mole ratio of (a) to (b) is from 1: 0À1 to 1: 10 and the mole ratio of (b) to (c) is from 1: 0À005 to 1: 5. In the examples, propylene or butene are polymerized either continuously in an organic solvent or in bulk using a catalyst consisting of (a) 3TiCl 3 .AlCl 3 , (b) Et 2 AlCl or Et 3 Al and (c) trilauryltrithiophosphite or phosphate, triethyltrithiophosphite or phosphate, triphenyltrithiophosphite or phosphate, tributyltrithiophosphite or tribenzyltrithiophosphite or phosphate. The catalyst is decomposed with methanol/hydrochloric acid, and the polymer washed and dried. The polymer is insoluble in boiling heptane.
Patent GB-1366790-A (GB)
Title: Device for multiplying a frequencyincrement
IPC: G01R23/00
Filed: 1972-12-22
Abstract: 1366790 Frequency synthesizers ADRETELECTRONIQUE 22 Dec 1972 [25 July 1972] 59302/72 Heading H3A A frequency synthesizer for multiplying the increment # component in an input frequency F 0  + # comprises a plurality of phase lock loops in cascade each including a controlled oscillator O 1 , a phase comparator C 1  which receives the input frequency F 0 +# as well as the additive beat between the output frequency F 1  of oscillator O 1  divided by a fixed ratio n and a standard frequency F 0 -F 0 /n. For obtaining the required multiplication factor with the permissible time constant a predetermined number of cascaded loops each having a predetermined amount of decade dividers may be used. For operating at a wide range of input frequencies F 0 +# an extra phase lock loop comprising an oscillator O 0 , a subtractive mixer M 0 , a phase comparator C 0  together with a synthesizer S are used.
Patent GB-1442128-A (GB)
Title: Burners for gaseous fuel
IPC: F23L15/04
Filed: 1972-12-23
Abstract: 1442128 Recuperative burners BRITISH GAS CORP 25 Jan 1974 [23 Dec 1972] 59728/72 Heading F4T A recuperative burner of the type described in Specification 1,331,427 wherein the air passage 8 for the supply of air to the burner and a products passage 11 are defined by nesting coaxial tubes and are in thermal-transfer relationship with one another, is provided with means 19-23 for supplying secondary air to the products passage. The said means may be integral with the main part of the burner or suitable for ready attachment to burners of the type described. The air passage 22 is also in thermal-transfer relationship with the products passage and defined by a further coaxial tube. The said means is also described in combination with the burners of Specifications 1,332,125; 1,243,626 and 1,041,708. Air in introduced into the products passage in the direction of flow of the products by nozzles such as 47 in Fig. 11 via an annular aperture defined by two coaxial tubes. Various means for flame retention immediately downstream of the air inlet in the products passage are described including local enlargement of the products passage and positioning of baffle plates.
Patent GB-1313196-A (GB)
Title: Comb filter circuits
IPC: H03H11/34
Filed: 1970-12-16
Abstract: 1313196 Colour television SONY CORP 16 Dec 1970 [16 Dec 1969 29 Jan 1970] 59731/70 Heading H4F  A comb filter circuit for separating the chrominance and luminance components of an N.T.S.C. video signal comprises a one line delay line 3 which incorporates a band-pass filter and a bridge circuit means B made up of four equal impedances R 1 , R 2 , R 3 , R 4 . The delay line 3 produces two delayed outputs of opposite polarities which are fed from the delay line output terminals 3a, 3b to apposite points h 1 , h 2  of the bridge means B, the luminance component of the signal fed to point h 1  being of the same polarity as that of the input signal which is fed from the input 8a to a third point h 4  of the bridge means B, the fourth point h 3  of the bridge means B being connected to earth via a capacitor C 1 . The delayed and non-delayed signals are added across resistor R 1  and subtracted across resistor R 2 , so producing the luminance component at terminal 5a, and the chrominance component at terminal 5b. The chrominance component at terminal 5b includes low frequency luminance components due to the non band-pass filtered input to point h 4  and these may be removed by a subsequent band-pass filter. An amplifier 8 may be included between the input 8a and the delay line 3, and this may include a variable potentiometer VR which is adjusted so that the delayed and non-delayed signals have equal amplitudes. So that the low frequency luminance components at terminal 5a are not attenuated by the bridge means B the capacitor C 1  may be replaced by a tuned circuit whose resonant frequency is within the band passed by the delay line 3, its impedance outside this band being large compared with the impedance of the bridge means B. In an alternative embodiment three parallel tuned circuits are used to connect point h 3  to earth, in which case points h 3  and h 4  may be joined by an inductance element. Alternatively point h 3  may be fed with the input from terminal 8a passed through a low-pass filter which again provides non-attenuated low frequency luminance components at terminal 5a.
Patent GB-1431609-A (GB)
Title: Mine roof support and shield structure
IPC: E21D23/06
Filed: 1973-12-28
Abstract: 1431609 Mine roof supports VEREINIGTE OSTERREICHISCHE EISEN-UND STAHLWERKE-ALPINE MONTAN AG 28 Dec 1973 [28 Dec 1972] 59971/73 Heading E1P In an advancing mine roof support for a longwall working comprising a shield 2 pivotally connected to a base plate 1 by pivotal links 3 and a pivotal jack 19, a rocking cap 6 is pivoted to the front of the shield and a hinged cap 8 is also pivotally secured thereto, the pivotal axes of said caps being disposed adjacent one another. The cap 8 is supported by a prop 29 as shown which may be replaced by a jack pivotally secured to the shield, see Figs. 1 and 2 (not shown). In a further modification, Fig. 4 (not shown), the cap 6 is supported from the base by two props and has a modified mounting.