baber/WOPTO huggingface dataset:
Patent GB-1271468-A (GB)
Title: Device for locking a tippable driver's cab to a chassis
IPC: B62D33/07
Filed: 1970-07-07
Abstract: 1,271,468. Releasable fastenings. DAIMLER BENZ A.G. 7 July, 1970 [22 Oct., 1969], No. 32889/70. Heading E2A. A device for locking a tippable driver's cab to the chassis of a commercial motor vehicle and adapted to be disposed on the driver's cab and co-operable with a keeper 3 adapted to be disposed on the chassis, comprises a pivotable bolt 5 which in a first position, Fig. 1, engages the keeper and in a second position frees the keeper, a locking member 8 adapted to lock the bolt in the first position thereof and to be withdrawn against a spring 9, and a spring-loaded detent 12 arranged to hold the member 8 in the withdrawn position. The detent is arranged to be moved by the bolt into a released position when the bolt is moved into the second position to free the keeper whereby the locking member is moved by the spring 9 into a position of readiness for locking. As shown, the device is unlocked by withdrawing the locking member 8 by the handle 10 against the action of spring 9, the detent 12 being rocked by the spring 13 about pivot 11 so that the detent engages the shoulder 15 of the member 8. By tipping the driver's cab, the keeper 3 moves out of the opening 2 in the base plate 1 and rotates the bolt 5 against the action of spring 7, a pin 17 on the bolt rotating the detent to free the latter from the shoulder 15 and the member 8 thereby being pushed by spring 9 so that the edge 18 thereof engages the edge 19 of the bolt; the device is thus in the position of readiness for locking.
Patent GB-768553-A (GB)
Title: Improvements in or relating to propelling nozzles
Inventor: LOMBARD ADRIAN ALBERT
IPC: F02K1/48
Filed: 1953-11-26
Abstract: 768,553. Exhaust silencers. ROLLS-ROYCE, Ltd. Oct. 28, 1954 [Nov. 26, 1953], No. 32909/53. Class 7 (2). [Also in Group XXVI] A jet propulsion nozzle comprising a rigid tubular structure in which the area of flow decreases from the upstream end of the nozzle towards the downstream end over at least part of the axial length of the nozzle has a selected number of circumferentially spaced channels which extend in an axial direction from adjacent the upstream end of the nozzle to the downstream end thereof through which exhaust gases flow to emerge in spaced streams between which mixing of the exhaust gases with air takes place to reduce the amount of noise emitted by the nozzle. The propelling nozzle 10, Figs. 1 and 2 comprises a flange 11 by which it is secured to the jet pipe 12. The whole is surrounded by an air jacket 15, 16 and is located in an aircraft fairing 18. The nozzle has a number of longitudinal corrugations which form a number of internal troughs 20 each of which consists of a circumferentially extending part 21 and a pair of radially extending side walls 22. The junctions between the part 21 and walls 22 and the circumferentially extending inner wall part 23 are formed by a radius. The corrugations increase in depth from the upstream end to the nozzle outlet so that the parts 23 lie on the surface of a fraction of a cone. The corrugations are stiffened by a number of Z-section rings 26 which are spot welded as at 27 to the parts 21. The walls 22 and parts 23 may be stiffened by trough shaped parts which are spot welded to them at 28a, 28b. The side walls 22 may be radial, or arranged so that the walls of the internal trough 22 or external trough 24 are parallel. The circumferential distance between the walls may be the same over the axial length of the corrugations. The number of corrugations may vary depending upon the frequency of the noise it is desired to suppress. In operation, the propulsive gases entrain a quantity of air which is flowing through the air jacket 15, 16 and causes it to flow through the external troughs 24. Specification 744,196 is referred to.
Patent GB-1058121-A (GB)
Title: Device for the attachment of a wide view or a wide angle mirror on to an existing vehicle mirror
IPC: B60R1/08
Filed: 1963-08-21
Abstract: 1,058,121. Rear-view mirrors. C. LUCHTENBERG, [trading as C. LUCHTENBERG KOMM. - GES. HAGUS METALLWAREN]. Aug. 21, 1963 [March 25, 1963; April 2, 1963; July 16, 1963], No. 33038/63. Heading B7J. [Also in Division E2] A clamping device for securing a wide-view mirror glass 13, Fig. 3, to an existing rear-view vehicle mirror 10, 11 comprises a holding plate or frame 14, Figs. 4 and 5, having lugs 25 thereon to mount the glass 13 and a pair of arms 17 pivoted at 16 between two plates 15 and carried by the frame (one plate 15 being removed, Fig. 4), the ends of the arms having gripping portions 18 which are urged to grip the mirror 10, 11 by springs 19 connected at 20 to at least one of the plates 15 and at 21 to the arms. The latter have thumb grips 22 and the elements 18 are slotted to receive rubber inserts. Soft rubber strips 15a are cemented to the plate 15 adjacent the mirror 10 to protect the latter. According to the embodiment of Fig. 7 arms 17a are independently pivoted to a member 27 secured to the holding plate 14a and have lugs 21a engaging in slots 28 in a sliding T-shaped member 29 having a single gripping element at its upper end. In another embodiment described with reference to Figs. 9 and 10 (not shown) two separate holding plates are each provided with a pair of opposed slidable gripping elements urged towards each other by a pair of springs. According to a further embodiment described with reference to Figs. 11 and 12 (not shown) the holding plate has one pair of gripping elements to engage one edge of the wide-view mirror glass and has two slots to receive rivets on a movable member having two gripping elements to engage the other edge of the mirror glass, the plate and member being connected by a pair of springs. In a still further embodiment the holding plate carries a pair of hooked springs as described with reference to Figs. 15 and 16 (not shown), the springs serving as gripping elements.
Patent GB-1177423-A (GB)
Title: Condensation of primary alcohols.
IPC: C07C29/34
Filed: 1967-07-18
Abstract: 1,177,423. Condensation of primary alcohols. MONTECATINI EDISON S.p.A. 18 July, 1967 [21 July, 1966], No. 33040/67. Heading C2C. Primary alcohols with a chain branched at position 2 are produced by condensing two molecules of a primary alcohol or a mixture of two or more primary alcohols having the general formula R-CH 2 -CH 2 -OH, in which R is an alkyl, cycloalkyl or aryl radical containing from 1 to 16 carbon atoms, or a mixture of such a primary alcohol or alcohols with an α-branched alcohol containing up to 16 carbon atoms in the molecule, at a temperature of from 80‹ to 220‹ C. in the presence of an alkaline substance soluble in the alcohol and (as a catalyst) a soluble compound of Rh, Ir, Ru, Os, Pd, Pt or a mixture of soluble compounds of these metals, together with (as stabilizer) an organic compound of P, As or Sb, in the trivalent state, having the general formula PR 1 R 2 R 3 , AsR 1 R 2 R 3 , SbR 1 R 2 R 3  or R 1 P(R 2 )-(CH 2 ) n -P(R 2 )R 1  in which R 1 , R 2  and R 3  are the same or different alkyl, aryl or cycloalkyl radicals containing from 1 to 8 carbon atoms and n is a whole number from 2 to 4.
Patent GB-1097779-A (GB)
Title: Single transistorized comparator circuit
IPC: G05B1/02
Filed: 1965-08-03
Abstract: 1,097,779. Difference circuits. BENDIX CORPORATION. Aug. 3, 1965 [Aug. 3, 1964], No. 33143/65. Heading G4G. [Also in Division G1] A transistorized comparator circuit responsive e.g. to a command signal which may be derived from a thermocouple, and to e.g. a comparable feed-back signal, for operation of a mill detector or mill seeking servo system comprises a PNP transistor 16 whose base is switchably pulsed negatively from A.C. source 24 over diode 22 and series resistor 20; one input being applied to emitter 37 over resistor 12 and the other across collector return resistor 28; the A.C. output proportional to the difference of the inputs and dependent in phase on the sense thereof being derived over capacitor 14. The transistor may be NPN with collector and emitter interchanged and the sense of the diode reversed.
Patent GB-922940-A (GB)
Title: Recording pen assembly
IPC: G08C21/00
Filed: 1961-09-15
Abstract: 922,940. Recording pens. VICTOR COMPTOMETER CORPORATION. Sept. 15, 1961 [Nov. 14, 1960], No. 33145/61. Class 146 (3). [Also in Group XXV] In a graphic communication transceiver which includes a platen 12 and means for supporting a recording medium in the form of a web 13 on the platen, a recording pen assembly comprises a recording pen 14, a pen linkage means 22 supporting the pen 14 for movement transversely of the platen 12, and means including a solenoid 35 for moving the nib 19 into and out of writing engagement with the recording medium 13. A stylus support member 41, connected in mechanical driving relation to the pen linkage means 22, extends into spaced alignment with the recording pen 14. A stylus 44 is removably mounted on the tip end of the support member 41 to a spherical keeper member 45, which engages with a polepiece 46 engaging a permanent magnet 47. A non- magnetic element 48 surrounds the polepiece 46 producing a magnetic coupling. A conical contact member 52 attached to the magnet 47 is held away from the two contact members 53 and 54 by a spring 51, but when writing pressure is applied, contact is made and the electrical circuit to the solenoid 35 is closed. A wire 37 connects the solenoid armature to a crank 38, disposed to engage one end of a plunger 39, the other end of which engages the ink conduit 16 of the recording pen 14. The pen 14 returns to the non-recording position when the solenoid circuit is broken due to the resilience of the ink conduit 16. When the apparatus is used as a receiver, transmitted signals are fed into servomotors 27 and 31 controlling the linkage mechanism 22, and to the solenoid 35, and the stylus 44 is removed. When used as a transmitter, the stylus 44 is used like a pen. A transparent sheet 58 of glass or synthetic plastic material enables the recording medium 13 to be seen. A shoe 61 adjacent the stylus 44 prevents the support member 41 from being distorted and by sliding over the surface of the sheet 58, gives " feel " to the writing with the stylus 44. As contact between the nib 19 and the recording medium 13 is controlled electrically and not mechanically, damage to the pen 14 is averted. The nib 19 is supplied with ink by capillary action of the ink conduit 16 from a suitable ink supply (not illustrated).
Patent GB-204598-A (GB)
Title: A machinable non-magnetic high resistance cast iron alloy
IPC: C22C37/00
Filed: 1920-11-25
Abstract: 204,598. Dawson, S. E., and Ferranti, Ltd. Nov. 25, 1920. Alloys.-A practically non-magnetic iron alloy having high electrical resistance, and having the properties of cast iron as regards behaviour to tools and in the foundry, is made by adding to grey cast iron a metal such as manganese which reduces the magnetic susceptibility and one or more additions to secure machinability. The alloy may contain, for example, 85 per cent of cast iron, 5 per cent of manganese and 10 per cent of nickel; or 90 per cent of cast iron, 5 per cent of manganese and 5 per cent of nickel; or part of the nickel may be replaced by copper; or up to 1 per cent of aluminium may be included. Specifications 7422/96, 24705/96, 8699/14, and 126,362 are referred to.
Patent GB-425676-A (GB)
Title: Improvements in or relating to crutches
IPC: A61H3/02
Filed: 1934-11-20
Abstract: 425,676. Crutches. MASTERS, E. F., 240, New Kent Road, London. Nov. 20, 1934, No. 33318. [Class 81 (ii)] An invalid's crutch comprises a tubular steel or other metal stem a, a rigid cross piece e, a removable sponge rubber pad g thereon, and a removable cover k enclosing the pad and cross piece. The stem a is provided with a projecting tube carrying a hand grip c and with a removable rubber pad b. An aluminium casting bored to receive the tube a may form the cross piece e having wings f of channel section. Alternatively, a metal cross bar may be secured by a spigot which is soldered into the tube a. The pad g may be formed with side wings h, and the cover k, for example of leather, closed by a pair of zip fasteners l along the under surface of the cross piece. Press fasteners, stitching, lacing, or other closing means may be used. The tube a may be in two parts soldered into a T-shaped hand piece c.
Patent GB-866637-A (GB)
Title: Process for the selective hydrogenation of acetylene
IPC: C07C5/08
Filed: 1959-10-01
Abstract: The selective hydrogenation of acetylene in the presence of ethylene or other olefines with hydrogen over a palladium catalyst is effected in the presence of one of (a) an aliphatic or cyclic thioether, (b) 10-100 p.p.m. by volume of a sulphur compound converted into a thioether under the reaction conditions, (c) a disubstituted cyclohexane volatile enough to remain vaporous under reaction conditions, or (d) a bromo-, dibromo-, chloro-, or dichloro- or chlorobromo-benzene, -toluene or -ethylbenzene.  The compound (a) may be dimethyl, diethyl, di-n-butyl, or diisoamyl sulphide or thiophene present in amounts of 0,0005-30% by volume of the gas mixture. Compound (b) may be carbonyl sulphide or hydrogen sulphide.  Compound (c) may be decalin, or dimethyl-, diethyl-, or methylethyl-cyclohexane added in amounts of 50-2,000 p.p.m. by volume.  Compound (d) is added in amounts of 10-200 p.p.m. by volume. The catalyst preferably also contains copper, silver or gold. Temperatures up to 110 DEG C. are used or up to 250 DEG C. in the case of adding a compound (c) or (d).
Patent GB-824588-A (GB)
Title: Purification of chlorinated hydrocarbons
Inventor: PALLENBERG JOSEPH C
IPC: C07C17/395
Filed: 1957-10-25
Abstract: A method of purifying trichloro-ethylene, b -trichlorethane, tetrachloroethane, perchlorethylene, ethylene dichloride, methylene chloride, chloroform or carbon tetrachloride comprises heating said liquid chlorinated hydrocarbon to a temperature of at least 70 DEG C. in the presence of anhydrous ferric chloride until liberation of hydrogen chloride and/or carbon dioxide ceases and then separating the purified chlorinated hydrocarbon from any reaction products and the ferric chloride residue.  The chlorinated hydrocarbon may be washed after treatment with ferric chloride with water or a dilute aqueous alkaline solution, e.g. water containing triethylamine, the organic layer separated, steam distilled, dried and fractionated. Examples are furnished.
Patent GB-758939-A (GB)
Title: Improvements in or relating to optical apparatus
IPC: G02B5/28
Filed: 1953-12-02
Abstract: 758,939. Optical systems. GENERAL ELECTRIC CO., Ltd., and GOLDSMID, H. J. Nov. 25, 1954 [Dec. 2, 1953], No. 33544/53. Class 97 (1). An optical element for use with infra-red radiation having a mean frequency corresponding to a wavelength A in vacuo, is of silicon and has on at least that part of its surface through which the radiation is to be transmitted, a layer of silica having a uniform thickness of approximately (2N-1) #/6, where N is a small integer, preferably unity. The element may be a lens produced by grinding a sheet of pure silicon cut from a directionally frozen ingot, the main faces of the slice lying in planes perpendicular to the direction of freezing. The silica layer may be formed by heating the lens in air at a temperature of 1000‹ C., any excess silver being removed by dilute hydrofluoric acid.
Patent GB-1470410-A (GB)
Title: Electronic apparatus
IPC: H04N3/38
Filed: 1974-07-31
Abstract: 1470410 Film scanner RANK ORGANISATION Ltd 21 May 1975 [31 July 1974] 33694/74 Heading H4F An error signal indicative of vertical misregistration in a flying spot film scanner, in which each film frame of a continuously moving film is scanned by at least two (e.g. two or three) interlaced fields, is derived by forming in respect of each of a plurality of lines in one field a signal representative of the difference 8 between the mean video signal value of each such line and the mean video signal value of the respective two immediately adjacent lines 6, 7 in the other field, selectively reversing 10 the sign of each difference signal when a predetermined one of the two immediately adjacent lines has a greater individual mean video signal value than the other 9, and forming the sum 11 of the difference signals for the plurality of lines in the one field. Preferably the difference signals are formed in respect of all the lines in the one field. The vertical registration error is only detected when there is a change of information in the vertical direction and because horizontal patterns could give a difference signal with zero registration error the difference signals are summed for a plurality of lines preferably a whole field. As shown detector 1 produces a signal proportioned to the mean for one line only that is stored in sample and hold 2 while detector 1 operates on the next line. The first field is fed via switch 3 to field delay line 5, and the second field is fed directly and via a one line period delay to adder 6 and divider 7 the resulting mean signal value of two lines being subtracted 8 from the output of delay line 5. Comparator 9 detects whether the vertical signal is increasing or decreasing and by-passes the inverter 10 or not as required so that all the difference signals have the same sign. These difference signals for every line are added 11 and the sum stored in sample and hold 12 until the next two fields have been completed and the new error stored.
Patent GB-985280-A (GB)
Title: Method of forming a metallic electrical contact to a preselected area of a semiconductor surface
IPC: H01L21/285
Filed: 1962-09-03
Abstract: A metallic electrical contact is formed to a preselected area of a semi-conductor surface by forming a film of photo-sensitive polymerizable material, e.g. polyvinyl alcohol or resinous ester of maleic anhydride and alkoxy hydroxy acetophenone on the surface, exposing the film to light or radiation in areas other than the preselected area, developing the film, polymerizing its exposed areas and removing its unexposed areas, e.g. by washing with a solvent such as C2HCl3 to uncover the preselected area, evaporating a metal layer on to the preselected area and the polymerized material and removing the polymerized material with the portion of the metal layer thereon. The semi-conductor surface may be etched, e.g. with NH4F, prior to coating to remove oxide film.  For example, a p-type silicon semi-conductor crystal slice doped with B and having n-type emitter regions doped with Sb, As or P may be provided with ohmic dot and ring contacts to the emitter region and to the p-type base region respectively by the above method wherein the metal contacts are of aluminiu, vapour deposited at 500-540  DEG C. The metal layer is preferably attached by heating to the preselected area, the layer being formed below the charring temperature of the polymerized material and the temperature being raised above charring and the charred polymerized material removed.  For depositing Au, Ag, In or Sn on Si, the attachment temperature may be less than the charring temperature.
Patent GB-1452887-A (GB)
Title: Electric stunning of animals f
IPC: H05C1/02
Filed: 1972-07-19
Abstract: 1452887 Stunning animals BRISTOL SAWCHINE CO Ltd [trading as BRISTOL ABATTOIR EQUIPMENT CO] 19 Oct 1973 [19 July 1972] 33813/72 Heading AIM  A method of stunning animals, prior to slaughtering, comprises applying an electric shock from a source of alternating current having a frequency of at least 750 cycles/sec and a voltage of at least 90 volts, such that the time required for stunning is decreased and the size of animal it is possible to stun is increased, with respect to that achieved by conventional methods.
Patent GB-790083-A (GB)
Title: Improvements in or relating to hardening agents for epoxide resins
IPC: C08G59/18
Filed: 1955-11-25
Abstract: Epoxide resins having an epoxide equivalent of more than one are hardened by reacting therewith products obtained by reacting an epoxide having an epoxide equivalent of less than one with a polyamine.  The hardening agent is preferably obtained by condensing dihydric phenols with epi- or dichlorhydrins in proportion ranging between 1 : 0.5 and 1 : 1 in alkaline medium and without isolating the reaction product adding the polyamine dissolved in butanol or ethylene glycol.  The epoxide resins are hardened by the amine adduct by heating the mixture for an hour at 70 DEG  C. or for one quarter hour at 150 DEG  C.  In examples: (1) 228 parts by weight of p,p1-dihydroxydiphenylpropane are dissolved in 720 parts of 5 per cent caustic soda solution and condensed at 40 DEG  C. with 83 parts of epichlorhydrin.  The resinous epoxide obtained is dissolved in butanol, the butanol solution washed with water and the resin freed from volatiles by distillation.  50 Parts of the condensate are dissolved in ethyleneglycol and the solution heated with 50 parts triethylenetetramine for 1 hour at 100 DEG  C.; volatile components including excess amine are removed by distillation in vacuo.  The hardening agent thus obtained was used to harden epoxide resins having epoxy numbers of 1.6, 3.8 and 6.1; (2) a similar amine adduct was prepared by heating 114 parts p,p1-dihydroxydiphenylpropane with 41.5 parts epichlorhydrin and reacting the product with 90 parts triethylenetetramine; (3) six butanolic solutions obtained as described in (1) were reacted respectively with 130, 100, 50, 30, and 10 parts of triethylenetetramine and products containing respectively 5.19, 4.84, 3.63, 2.73, 2.2 and 1.3 per cent nitrogen were obtained; the hardening effect of these products was found to decrease with fall of nitrogen content.  Specifications 691,543 and 779,566 are referred to.
Patent GB-1080719-A (GB)
Title: Improvements in or relating to mirrors
Inventor: BROADBENT STANLEY
IPC: A47G1/02
Filed: 1965-08-07
Abstract: 1,080,719. Mirrors. PEARCE & CUTLER Ltd. July 25, 1966 [Aug. 7, 1965], No. 33908/65. Heading A4X. A miror comprises a reflecting element 10 and a backing element 12 assembled together in a superimposed relationship, and held in position by an extruded or other similar strip 14 having a first portion 22, which engages the marginal edge of the reflecting element, a second portion 26, which engages the exposed end faces of the reflecting and backing elements 10 and 12 and a third portion 24 which engages the marginal edge of the backing element and which is notched to permit the strip to follow the edge contour of the mirror. The edge strip 14 may be of a J-shaped cross-section and has an inwardly directed nose 30 which engages in a groove in the backing element 12. The strip is composed of an inner layer of cellulose acetate butyrate plastic 16, an intermediate layer 18 of aluminium foil and an outer layer or coating 20 of transparent or translucent plastic.
Patent GB-520873-A (GB)
Title: Improvements in or relating to processes for making weldless metal tubes and means for carrying out said processes
IPC: B21C3/08
Filed: 1938-11-22
Abstract: 520,873. Rolling tubes. DVORAK, E. Nov. 22, 1938, No. 33938. Convention date, Dec. 2, 1937. [Class 83 (iv)] In pushing or drawing a tubular billet through a succession of 3-pass groups of rolls heavy reduction (40 per cent. or more) is obtained by preceding the stretching-rolls 4 by a pass of grooving-rolls 3 to form longitudinal grooves or reductions, and, following the reducing-rolls, is a pass of ribbed rolls 5 which loosen the tube from the mandrel so that there is no frictional stress when the tube enters another set of three similar passes. The rolls of the three passes are set at an angle to each other. The tube enters the next set of three passes after it has fully or almost fully left the (middle) reducing-rolls of the previous group of passes. The billet may be reduced in one or several heats or in the cold, in which latter case, the middle reducing-rolls are small and are backed by co-operating support rollers 9, as in Fig. 9.