baber/WOPTO huggingface dataset:
Patent GB-1054649-A (GB)
IPC: B43K24/08
Abstract: 1,054,649. Ball-point pens. IDEAL S.R.L. March 18, 1964 [March 29, 1963], No. 11346/64. Heading B6P. A push button operating device for ball point pens comprises an upper piece or cap member a formed on an annular downwardly facing surface with four equally spaced recesses s with two cam teeth between each, a lower piece or body portion b secured to the piece a by a pin v on a resilient tongue f and hole z or by gluing or pasting and having an upwardly facing annular surface formed with cam teeth oppositely disposed to the teeth in the piece a, and an intermediate piece c integral with the push button and having four laterally extending lugs C 1 , C 2 , C 3 , C 4  spaced at 90 degrees. The writing point q is secured to a tube h urged upwardly against the piece c by a spring e. The piece c is vertically slidable and rotatable about a vertical axis. When the point is retraeted, the lugs rest in the slots. When the button is depressed, the lugs move out of the slots against the teeth of the piece b, the piece c being rotated clockwise through ¢ tooth pitch, and on release of the button the teeth of the piece a produce a further such rotation, the lugs resting on the latter teeth with the point projected. On a second depression and release, two further inch rotations are produced, the lugs returning into the slots. The number of lugs and recesses may alternatively be three, with six teeth. The piece c may be formed in two relatively rotatable parts. The pieces may be pressed from synthetic resins. The pieces a and b are in contact in an inclined plane m-n.
Patent GB-1143875-A (GB)
IPC: B24D18/00
Abstract: 1,143,875. Grinding wheels. DISTILLERS CO. (CARBON DIOXIDE) Ltd. 8 Feb., 1968 [15 Feb., 1967], No. 7167/67. Heading B5A. A process for manufacturing grinding wheels comprises compressing in a wheel mould a mix comprising alumina, silica, sodium silicate and resin, removing the so-formed wheel from the mould, applying carbon dioxide gas evenly to all the surfaces of the moulded wheel and finally baking the wheel until the desired hardness is obtained. The carbon dioxide is applied evenly to the surfaces of the wheel by placing the latter on a support of permeable material e.g. one or more woven plastics mats or rigid wire mesh, covering it with a similar material and introducing gas at two points symmetrically placed with respect to the wheel. If the grinding wheel is placed horizontally on the base of the gassing chamber a baffle plate is placed above it.
Patent GB-1225577-A (GB)
IPC: E04G1/12
Filed: 1969-06-09
Abstract: 1,225,577. Carpet sweepers. G. BIENEK. 9 June, 1969 [15 June, 1968], No. 29001/69. Heading A4F. A carpet sweeper has a unidirectionally rotatable brush 3 provided with a clearer 6 for removing adherent matter having teeth 7, formed as triangular parallel plates, the operative edges 11 of which are inclined towards and over the dust collector 5.
Patent GB-1225801-A (GB)
IPC: H03K3/037
Filed: 1968-05-15
Abstract: 1,225,801. Transistor switching circuits. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. 6 May, 1969 [15 May, 1968], No. 23154/68. Heading H3T. [Also in Division G4] A switching circuit Fig. 1 (providing, for example a write current for a magnetic recording medium) has three similar conductivity type transistors TX, TY, TZ connected as shown to an inductive load, such as the primary of a transformer T, whose centre tap is connected to the supply - V through an inductance L the constant current in which is alternately switched through TX, TY; and a drive circuit (Fig. 3, not shown) is arranged to turn on all three transistors to build up the current in L to the required value, before push-pull operation starts. TX conducts before TY in each bit period to write a " 1 " and TY before TX to write a "0". The driver circuit (Fig. 3, not shown) includes NAND gates (G1-G9) and two bi-stable circuits (A, B) each of which also consists of NAND gates (E1-E6, Fig. 2, not shown) arranged in three pairs. One output (Q) of the bi-stable outputs (Q, #Q) adopts the state of the input (D) when a clock pulse (CP) occurs; and asynchronous setting (Q = 1) and resetting (Q = 0) is effected by a O input to, respectively, the preset input (P) and the clear input (C) which are normally held at 1. In the drive circuit (Fig. 3, not shown) the write signal WS (waveforms, Fig. 4, not shown) is inverted (G5) to turn on TZ, Fig. 1. The Q output of the first bi-stable (A) drives the transistors TX, TY via respective gates (G1, G4) one of these gates (G4) being supplied through another gate (G3) to provide the inversion necessary for push pull operation. This inversion (by G3) is effectively cancelled, however, during the initial build-up of current in L, to allow TX and TY to both conduct, by means of a further gate (G2) controlled by the second bi-stable (B) which maintains its reset state for one complete clock pulse cycle after the signal (WS) starts. On the next clock pulse after the start of the write signal, the second bi-stable (B) is set, to supply: a 1 to gates (G6, G8) receiving the data signal (LI) thereby enabling the first bi-stable (A) to be controlled by the data (LI); and a 0 to the gate (G2) allowing the X and Y gates (G1, G4) to supply antiphase signals. The first bi-stable (A) then controls the gates (G1, G4) to drive the write circuit of Fig. 1. The 1 and 0 edges of the write signals are defined by the negative going edges of the clock pulses (CP).
Patent GB-1231935-A (GB)
IPC: F15B13/043
Filed: 1969-04-23
Abstract: 1,231,935. 935. Hydraulic motor control circuits. ROBERT BOSCH G.m.b.H. April 23, 1969 [April 24, 1968], No.20722/69. Heading F1P. [Also in Division F2] The spool 19 of a reversing valve is urged to a neutral position by a double acting spring device 34, and is moved to provide the deserved flow and return connections to ram 17 by selectively connecting the ends of cylinder 27 to pressure fluid inlet 13 via orifice 43 and electromagnetically actuated pilot valves 45, 47. With both pilot valves open spool 19 is hydraulically free but is centralized by device 34 so locking ram 17. Energizing valve 45 closes the path between chamber 39 and outlet 14 so that pressure is applied to both chambers 37, 39 causing differential piston 36 to move spool 19 to the left. If now valve 47 is energized, a spool 19 is locked hydraulically and flow to ram 17 continues until valves 45, 47 are de-energized whereupon spool 19 is returned to its neutral position by device 34 and ram 17 is locked in its new position. To reverse the action of ram 17 valve 47 is energized so that fluid can only flow to chamber 37 thereby moving the spool to the right. According to a modification (not shown) the pilot valves are of single bent type. .
Patent GB-1233175-A (GB)
IPC: F16B25/00
Filed: 1967-07-10
Abstract: 1,233,175. Dowels. TIMBER RESEARCH & DEVELOPMENT ASSOCIATION. 10 Oct., 1968 [10 July, 1967], No. 31706/67. Heading F2H. A dowel comprises a core in the form of a rod which carries two or more protruding parallel helical flanges along substantially the whole length of the core, the radial height of the flanges being greater than their maximum thickness. The leading edge may be formed with cutting edges and the other end may be shaped to be fitted either by a special shaped spanner or a conventional spanner. One end may be provided with a screw-thread to take a conventional nut. The dowel may be of steel, aluminium alloy or plastics material. The flanges may be given indented or serrated edges.
Patent GB-1234508-A (GB)
IPC: C07D221/28
Filed: 1969-03-21
Abstract: 1,234,508. L - 3 - Hydroxy - 6 - oxomorphinan compounds. SHIONOGI & CO. Ltd. 21 March, 1969 [21 March, 1968], No. 14999/69. Heading C2C. Novel L 3 - hydroxy - 6 - oxomorphinan compounds of the formula wherein L signifies a morphinan conformation similar to those derived from thebaine, R represents H or OH, R 1  represents allyl, γ,γ - dimethylallyl or cyclopropylmethyl, and F represents the presence or absence of a double bond, and physiologically acceptable acid addition salts thereof, are obtained by reacting a morphinan compound of the formula with a halogen compound R 1 -X, where X is a halogen atom, in an inert solvent medium. The morphinans of Formula II can be obtained by reacting a corresponding N-methylmorphinan with cyanogen bromide in chloroform to form an N-cyanomorphinan and heating the latter with hydrochloric acid. Pharmaceutical compositions having action as narcotic antagonists and also useful as non- narcotic analgesic, sedative and antitussive agents, comprise compounds of Formula (I) above in combination with physiologically acceptable carriers, in forms such as tablets, capsules, pills, suspensions, solutions, emulsions and suppositories.
Patent GB-1238627-A (GB)
IPC: H01S3/06
Filed: 1970-02-17
Abstract: 1,238,627. Lasers. AMERICAN OPTICAL CORP. 17 Feb., 1970 [6 March, 1969], No. 7554/70. Heading H1C. To minimize the positive lens effect produced by thermal gradients in a glass laser rod due to pumping energy, the rod consists of a cylindrical core 11 and one or more concentric cylindrical layers 13, 15 of active laser material which are fused together, each layer having a slightly higher refractive index than the layer or core which it immediately encircles so as to impart directional control of an inwardly divergent beam of radiation 17 by total internal reflection at the interface. The cylindrical core 11 may be formed of active laser material, or the core, and optionally one or more of the adjacent layers, may be formed of a lossy material such as samarium doped glass. For neodymium doped active laser material the core 11 and layers 13 and 15 may have respective neodymium proportions, by weight, of 5%, 5À5% and 6%, each 0À5% step producing a refractive index change of about 0À1%. The laser rod may be used in an optical resonator formed by external plane mirrors, Fig. 3 (not shown). The rod may be clad with lossy samarium doped glass.
Patent GB-1238817-A (GB)
IPC: G11B23/03
Filed: 1970-04-20
Abstract: 1,238,817. Mounting magnetic disc records. SINGER-GENERAL PRECISION Inc. 20 April, 1970 [29 Sept., 1969], No. 18765/70. Heading G5R. An annular magnetic disc 32 is clamped, e.g. by means of a wedge-shaped metal C-ring 34, against an annular flange 28a extending round the periphery of a driven rotary hub 28 which is mounted at a predetermined distance from a head-mounting plate 12a forming part of a housing 12. In a modification (Fig. 2) two magnetic discs (32a), (32b) spaced by a resilient ring (54) are held coaxially between a hub flange and a clamping ring (56).
Patent GB-1257075-A (GB)
IPC: H03M7/12
Filed: 1969-01-29
Abstract: 1,257,075. Code converters. ELEKTRONISCHE RECHENMASCHINEN - WISSENSCHAFTLICHER INDUSTRIEBETRIEB-KARLMARX - STADT VEB. 29 Jan., 1969, No. 6030/69. Heading G4A. Conversion of binary code to B.C.D. or viceversa is effected by employing a shift register R 0  for the binary code and registers R 1 -R N  for the several orders of B.C.D. with recoders U<SP>(2)</SP> for the one conversion, or U<SP>(1)</SP> for the opposite, the arrangement being that signals from k stages of the shift register are combined with signals from register R 1  in the first recoder, and signals from the last recoder are fed back to the opposite end of the shift register. In converting from B.C.D. to pure binary the original number is entered into R 1 -R N  in descending order. Each recoder U<SP>(1)</SP> then calculates Z<SP>1</SP> n  = (Z n +10E n-1 )/2<SP>k</SP> where Z n  is the original digit in R n , E n-1  is the remainder from the preceding recoder or the blank signals from the last k bits of the shift register, and Z<SP>1</SP> n  is the result which is returned to R N . These calculations run down the line of recoders and the remainder e N1 -e NK  from the last is entered into the opposite end of the shift register. When the shift register has shifted through one complete cycle the operation is complete. A worked example is given with k = 2, two registers R1, R 2  being used to operate first on the thousands and hundreds digits and then on the tens and units. Conversion from pure binary to B.C.D. is done in analogous manner except that the original number is entered in ascending order in the shift register and using the alternate recoders U<SP>(2)</SP> the answer appears in registers R 1 -R N .
Patent GB-1289705-A (GB)
IPC: H03F3/45
Filed: 1969-12-17
Abstract: 1289705 Transistor amplifying circuits; gain control PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 17 Dec 1969 61514/69 Headings H3T and H4R In a gain control circuit, comprising a first transistor 2 and second transistor 1 with their emitters connected together and to a source of reference potential via a high resistance signal source, i.e. the collector-emitter path of transistor 3 to the base of which the signal is applied, an output being taken from the collector of transistor 2 and the gain being varied by differential variation of the base biases of the transistors 1, 2, the collector signal of the second transistor 1 is diverted to earth, via capacitor 14 and the collector direct current is supplied via the collector load of the first transistor 2, via resistor 16. The arrangement allows of direct coupling to a succeeding stage 9, since the collector potential of the transistor 2 does not vary as the gain is varied. If the amplification must not drop below a given value a resistor 17 is connected in series with the capacitor 14. If the subsequent amplifier stages are direct-coupled a direct-current negative feedback may be provided from a suitable point to increase the bias stabilization of the stage. The arrangement preferably comprises an integrated circuit.
Patent GB-1294940-A (GB)
IPC: H02M5/27
Filed: 1970-06-08
Abstract: 1294940 Frequency changers BATTELLE MEMORIAL INSTITUTE 8 June 1970 [9 June 1969] 27710/70 Heading H3T [Also in Division H2] In a pulse-width modulated inverter (see Division H2) a pulse train, width-modulated by a low frequency sine wave 5 is derived by feeding a higher frequency sine wave 1 along line 52 and sampled by pulses A on line 60 which turn on transistor 45 which saturates transistor 44 so as to transfer the instantaneous value of wave 1 via a diode 54 to a capacitor 55. The oblique edge of the triangular waves B is produced by the constant current discharge path via transistor 57 and is terminated when the input to a differential amplifier 58 reaches a reference voltage 4 at the junction of resistors 67, 68. Second harmonic distortion in the output is minimized by feeding a portion of wave 1 via components 74, 75 to the reference input of amplifier .58. An auxiliary circuit 80 (Fig. 6, not shown) may be used to modulate the current of transistor 57 so that, with constant amplitude of wave 1, the width of pulses C is inversely proportional to the sampling frequency.
Patent GB-1295145-A (GB)
IPC: C08G69/48
Filed: 1970-07-29
Abstract: 1295145 Photosensitive modified polyamides TORAY INDUSTRIES Inc 29 July 1970 [5 Aug 1969] 36621/70 Heading C3R [Also in Division G2] A modified polyamide having photosensitive properties is prepared by condensing 100 parts by weight of a soluble linear polyamide and 0À1-100 parts, preferably 1-50 parts, by weight of N-methylol acrylamide, N-methylol methacrylamide or a mixture thereof in the presence of an acid catalyst at 30-250‹ C. The process is preferably carried out in the presence of an inert solvent which may be present in an amount 50-2000 parts by weight per 100 parts of the linear polyamide. The linear polyamide is preferably obtained by polymerization of dibasic aliphatic acids and aliphatic diamines, aliphatic #-amino acids or aliphatic lactams having 3-13 carbon atoms and suitably has an intrinsic viscosity of above 0À1 dl./g. at 25‹ C. Specific examples refer to the use of nylon 6/66/610/612 and nylon 6/66/610. Suitable acid catalysts are inorganic mineral acids, organic acids, phenols or Lewis acids and such catalysts are suitable used in an amount 0À01-100 parts, preferably 0À1-40 parts, by weight based on the weight of the N-methylolacrylamide and/or N-methylol methacrylamide. The modified polyamide may be incorporated into a composition which contains at least one of (a) a compound of the formula CH 2 =CR 2 CON(R 3 )(R 4 ) wherein R 2  is hydrogen or methyl, and R 3  and R 4  are hydrogen, alkyl (C 1 -C 4 ) or -CH 2 OR 5 , wherein R 5  is hydrogen or alkyl (C 1-4 ), (b) a photosensitizing agent and (c) a thermal polymerization inhibitor. The amount of (a) is preferably less than 100 parts by weight per 100 parts by weight of the modified polyamide, whilst the amounts of (b) and (c) may be 0À01-100 parts by weight and 0À01-10 parts by weight, respectively, per 100 parts of the N-methylol acrylamide and/or N- methylol methacrylamide. The modified polyamide may be irradiated by a suitable light source, e.g. mercury lamp, resulting in crosslinking and insolubilization.
Patent GB-1296294-A (GB)
IPC: G03C1/73
Filed: 1971-04-19
Abstract: 1296294 Photo-sensitive materials NASHUA CORP 19 April 1971 [13 April 1970] 26833/71 Heading G2C A light-sensitive material comprises a support coated with a layer containing (1), a guamidine of formula wherein R 1  is hydrogen, phenyl,or o-tolyl, R 2  is phenyl, o-tolyl or guanyl and when R 1  is hydrogen R 2  is guaryl, (2) a naphthol and/or an acetoacetonitrile which reacts on heating with a silver salt to produce a colour change and which is inactivated by exposure to ultraviolet light and (3) a dye which on exposure to visible light renders the naphthol or acetoacetonitrile inactive. The material may contain in the light-sensitive or adjacent layer a silver salt and a coloured image be produced on imagewise exposure to light and heating. Alternatively, the material may be imagewise exposed to light, placed in contact with a layer containing a silver salt and heated to produce a coloured image on the silver salt layer as disclosed in specification 1002350 the addition of guanidine reducing the time for the light exposure.
Patent GB-1310031-A (GB)
Title: Gas sampling
IPC: G01N1/24
Filed: 1970-04-25
Abstract: 1310031 Gas analysis CAND-AIRE INDUSTRIES Inc 25 April 1970 19972/70 Heading G1B A sample of alveolar air is obtained, for example, from a person suspected of drunken driving, by arranging that exhaled air blown into a tube 24 is exhausted to atmosphere through a tube 26 until the end of an exhalation cycle is approached, a manually operated valve 14 then being opened whereby alveolar air is sucked through the tube 24 into an evacuated canister 10 which can subsequently be closed to trap a breath sample therein. The manually operated valve 14 may be connected by way of a T-piece 22 to the tubes 24 and 26, the tube 26 being provided with a one-way valve 28. A breath sample obtained in the canister 10 may be compared with a standard gas sample containing nitrogen and'alcohol by extracting portions of both samples from their respective containers which are advantageously provided with septum walls (16), Fig.2, (not shown) to permit hypodermic extraction and applying these portions to respective ampoules containing a composition which changes colour in accordance with the alcoholic content of the sample.
Patent GB-1311849-A (GB)
Title: Manufacture of phosphotungstic acid
IPC: C01B25/00
Filed: 1969-04-30
Abstract: 1311849 Phosphotungstic acid ALBRIGHT & WILSON Ltd 30 April 1970 [30 April 1969] 21938/69 Heading C1A Phosphotungstic acid is produced by reacting a starting material comprising calcium tungstate with phosphoric acid in the presence of nitric and/or hydrochloric acid at an elevated temperature, cooling to precipitate calcium phosphotungstate, redissolving the precipitate in water, adding sulphuric acid to the solution to precipitate calcium sulphate and separating the precipitate. Phosphotungstic acid may be precipitated from the solution by evaporating the solution or by adding excess mineral acid, such as HNO 3  or HC1. The starting material may be scheelite, or may be formed by reacting CaCl 2  or Ca(NO 3 ) 2  with aqueous sodium tungstate, which may be made by digesting iron tungstate in aqueous NaOH. The starting material may be heated with phosphoric acid and water prior to the addition of HNO 3  and/or HC1 thereto. Molybdenum impurity in the aqueous phosphotungstic acid may be precipitated by treatment with H 2 S.
Patent GB-1312218-A (GB)
Title: Steroid esters
IPC: C07J75/00
Filed: 1971-12-21
Abstract: 1312218 Steroid sulphonates JENAPHARM VEB 21 Dec 1971 59404/71 Addition to 1229732 Heading C2U [Also in Division C3] The invention comprises compounds of Formulae I and II (wherein R 1  is an alkyl, alicyclic, aralkyl, dialkylamino or polymethyleneimino radical; R 2  is an hydroxy, acyloxy, alkoxy or trimethylsiloxy radical; R 3  is H or an alkyl, alkenyl or alkynyl radical; or R 2  and R 3  together represent oxo), and their preparation from the corresponding steroid alcohols or phenols by reaction with R 1 -SO 2 -X (X=halogen) in the presence of a sterically hindered amine, e.g. triethylamine, triisopropylamine or 2,6-dimethylpyridine. 17#- Trimothylsiloxy compounds of Formula I may subsequently be hydrolysed with acid to give the corresponding 17#-ols. The inventive compounds are said to possess estrogenic, antifertility, antilipaemic and hypocholesterolemic activities, and may be made up with carriers into pharmaceutical compositions. (Routes of administration are not specified.)
Patent GB-1316258-A (GB)
Title: Road vehicles
IPC: B60P1/64
Filed: 1969-07-26
Abstract: 1316258 Platform vehicles MARSDENS (COACHBUILDERS) Ltd 24 July 1970 [26 July 1969] 37670/69 Heading B7B [Also in Division B8] In a road vehicle the chassis 12 moves rearwardly and relative to a platform 10 mounted on four legs 18, 26 to engage coupling means including a ramp to lift the front end of the platform and the chassis is also provided with rear platform lifting means. The coupling means comprises a normally inclined plate 48 pivoting about an axle 52 carried by a bridge 50. The plate 48 has a V-shaped cut away communicating with a slot which guides and receives a pin at the forward end of the platform 10. A ramp (not shown) is also provided on the underside of the platform forward of the pin. The rear lifting means, Fig, 2, is arranged to act on rails 60, 62 mounted at the end of supporting arms (64), Fig. 5 (not shown), pivotally mounted to side members (66) of the chassis to move the rails 60, 62 upwardly in an arc to engage platform rails 94, 96. The rails 60, 62 are actuated by an hydraulic or pneumatically operated double acting ram pivotally connected thereto. Links 74, 76 are pivotally joined in a slot guide 78 in a member 80 and are pivotally connected to the rails 60, 62 to keep them in phase. A pivoting locking plate 84 is biased by a spring 88 to engage the pivotal coupling 82 to hold the rails 60, 62 in the raised position. The mechanism may be released by an arm 90. The rails 60, 62 have platform engaging rollers (not shown), located in the region of 98 to reduce friction. The legs 18, 26 may be swung to a horizontal position by pulling a square section of the leg partially out of the hole 30, Fig. 6, and swinging in the sleeves 34 through 90 degrees and pushing the legs back in the hole 30. A locking member 36 pivoted by a spring 38 is released by a pull rod 40 so that the leg may be completely withdrawn. The rear legs may be provided with retractable wheels to facilitate moving.