baber/WOPTO huggingface dataset:
Patent GB-700235-A (GB)
Title: Electric circuits utilising semi-conductive devices
IPC: H03F3/04
Filed: 1949-09-02
Abstract: 700,235. Semi-conductor circuits. WESTERN ELECTRIC CO., Inc. Sept. 2, 1949 [Sept. 18, 1948], No. 22790/49. Class 40 (6) An electric signal translating circuit comprises a transistor, the bias between the emitter and base electrodes being derived from the bias source for the collector electrode, and provided by the difference in the potentials across two resistances, one of which is connected in shunt with the input circuit, and the other in series with the emitter electrode or the electrode common to input and output circuits. In Fig. 1, the block 1 of semiconducting material is provided with emitter electrode 3, collector electrode 4, and base electrode 2 which makes ohmic contact with the block. The block may consist of " n " type germanium, the necessary bias potentials then being such that a negative voltage is applied to the collector electrode, and a small positive voltage to the emitter electrode. Input signals applied between electrodes 3 and 2 result in amplified signals appearing in the output between electrodes 4 and 2. The bias potential for emitter electrode 3 is provided by the difference in the potentials across the resistances 10 and 11. Resistance 10 carries the emitter direct current, which may be of the order of 1 m.a., and resistance 11 carries the base electrode current which may be 2 m.a. The resistance values are such that the emitter is biased approximately one volt positive relative to the base electrode. Resistance 10 is of a value sufficient to avoid attenuating the input signal, and resistance 11 may be shunted by a signal byepass condenser 13, although this may be omitted if feedback is desired. Modifications are described relating to "grounded emitter ", or the grounded collector type. In the latter case, the signal byepass condenser is omitted and the resistor connected in series with the emitter serves as the output load impedance as well as providing part of the bias arrangement. The Specification as open to inspection under Sect. 91 describes an alternative arrangement in which the bias is provided only by the current flowing through a resistance which is connected in series with an inductance across the input circuit. Specifications 694,021, 694,023, [Group XXXIX], 694,025 and 700,232 are referred to. This subject-matter does not appear in the Specification as accepted.
Patent GB-795774-A (GB)
Title: New pharmaceutical compositions
Inventor: THORNTON MAURICE JAMES
IPC: A61K47/06
Filed: 1955-08-08
Abstract: Pharmaceutical compositions which are emulsions, comprise aqueous solutions of disodium-4 : 41-diethylaminodiphenyl sulphone-a  : a 1-disulphonate in a neutral, oily base which may be a vegetable oil such as arachis oil or a mineral oil such as paraffin oil or soft paraffin, in the presence of a blend emulsifying agent such as beeswax, wool alcohols or lanolin.  The compositions, which should contain not less than 5 per cent by weight and not more than 20 per cent by weight of the active material, are said to be active against bactericidal infections, especially eye infections.
Patent GB-880483-A (GB)
Title: Improvements in the application of protective coatings
IPC: A23C19/14
Filed: 1958-07-16
Abstract: Protective coatings are formed on articles by projecting particles of material comprising one or more metallic oxides on to the articles by means of a flame gun fed with threads or rods of the oxide to be projected agglomerated by an organic binder there being added to the projected material an inorganic compound which by being passed through the flame of the gun is adapted to form a cement with at least one of the said oxides.  The added compound may be phosphoric acid or an inorganic phosphate or a mixture thereof.  The projected material may contain oxides of aluminium, magnesium or an alkaline earth, chromium, zirconium or silicon: it may also contain nitrides, carbides, borides and/or metals.  The organic binder may be an epoxy resin.ALSO:A composition for spinning or drawing into threads or rods comprises one or more metallic oxides, an organic binder, and an inorganic compound forming a cement with one of the oxides.  In an example, the composition is alumina 69%, epoxy resin 25% and phosphoric acid 6%.  Other oxides which may be used are those of magnesium and the alkaline earths, zirconium, chromium and silicon. The inorganic compound may also be an inorganic phosphate.  The composition may also contain carbides, borides, nitrides and metals.
Patent GB-213836-A (GB)
Title: Improvements in or relating to printing on indiarubber and the production of articles thereby such as utensils such as plates, saucers & bowls
IPC: B29C37/00
Filed: 1922-12-20
Abstract: 213,836. Plantation Rubber Manufacturing Co., Ltd., and Dessau, M. M. Dec. 20, 1922. Plates, dishes, &c. are made from crepe rubber by coating one or both surfaces with china-clay, whiting, lime &c. and by applying a layer of transparent latex, before and after or after such coating. The article may be printed upon as described in Specification 204,668, [Class 70, India-rubber &c.], and the article is cold vulcanized, as by the Peachey process.
Patent GB-506407-A (GB)
Title: Improvements in and relating to apparatus for reproducing without interruption from a plurality of gramophone records
IPC: G11B17/00
Filed: 1937-08-20
Abstract: 506,407. Gramophones. HIESS, K. Aug. 20, 1937, No. 22929. Void. Convention date, March 1. [Class 40 (ii)] In order to secure accurate continuity in reproduction from a sequence of disc sound records, an apparatus employing two reproducers 37' is used, the reproducers coming into operation alternately. Prior to serial reproduction each record is played while one of the turntable spindles 3' is coupled by a clutch 37 to a counting mechanism which records fractions of a turn, whole turns and units of twenty turns, thereby enabling the precise whole and fractional turns occupied in the idle and playing periods to be determined. The radius vectores corresponding to an arbitrary zero (the end of the first idle turn) and the end of the playing period are marked on each record and the turntables also are marked so that the records may be placed on the turntables with their zero and terminal radius vectores, as above defined, accurately positioned relatively to the arcs of movement of the reproducing styli. A camshaft 31 driven through gearing and a clutch 29 by a motor 24 effects the raising and lowering of the pick-up arms, these arms being lowered on to the records in three stages occurring one at the end of each of the last three idle turns prior to reproduction. The timing of the movements of the shaft 31 to effect the change over from one record to the next is effected bv switches 'controlled by pre-selectors 6, 7, 8, 9 which are successively set in accordance with the ascertained data of the record next to be played.
Patent GB-386589-A (GB)
Title: Improvements in or relating to bottom plates for track chains
IPC: B62D55/26
Filed: 1932-08-16
Abstract: 386,589. Endless tracks for vehicles. LœBECKER MASCHINENBAU - GES., 60, Karlstrasse, L³beck, Germany. Aug. 16, 1932, No. 22999. Convention date, Sept. 30, 1931. [Class 79 (i).] The tread-plates a of an endless track are provided with hollow sleeper-like transverse reinforcing members b which are embraced by the chain links c bearing upon the treadplates. The members b may be riveted or welded to a, and the links c may be similarly secured to a. Sprocket - engaging teeth c<1> are formed on the links.
Patent GB-596383-A (GB)
Title: Process and apparatus for the manufacture of endless cable casings
IPC: B21C37/12
Filed: 1944-11-21
Abstract: 596,383. Covering cores by winding. HUSSNIGG, A. C. Nov. 21, 1944, No. 23117. Convention date, Sept. 14, 1943. [Class 109] [Also in Groups XXVIII and XXXVI] In a method of and apparatus for producing endless cable coverings from layers of band material wound on a stationary mandrel 1 through which the cable passes, the tube of band material is drawn through rotary helical members comprising a worm 4 and nut 2 having single or multiple threads of taper form arranged so that the tube is grooved and at the same time its diameter is reduced to ensure that it fits tightly around the cable. The thread 5 of the nut has an end portion. 6 which extends inwardly beyond the line of the thread crests. In a modification, Fig. 2, having a double threaded nut, the extended portions of the threads are constituted by separate interchangeable inset pieces 10, 10<1> which may be resiliently mounted.
Patent GB-1475319-A (GB)
Title: Passive antenna element
IPC: H01Q23/00
Filed: 1974-05-23
Abstract: 1475319 Aerials HARRIS CORP 23 May 1974 [23 May 1973] 23186/74 Heading H4A A passive antenna element for use in a phased array, and which can reflect incident circularly polarized electromagnetic radiation with a relative phase shift of 0, 90, 180 or 270 degrees comprises four concentred spiral arms rotationally displaced by 90 degrees relative to each other, and central switching diodes and D.C. bias controls 120-126 for connected selected inner arm ends together according to the desired phase shift, the arms being so formed, or terminated at their outer ends, that currents travelling outwardly along the arms are reflected into the active region (that where waves of length # are received or transmitted and constituted by an annular region of mean radius #/2#) with 0 degrees relative phase shift for one opposed pair of arms and by 180 degrees for the other opposed pair of arms. As shown, the latter phase shifts are introduced by reactances X 1  and X 2 . Alternatively the length of the arms may be varied or the spirals may have different sizes, Figs. 2 and 3 respectively (not shown). In operation, in the embodiment of Fig. 1, it is said that received right circularly polarized radiation produces currents which are in phase along any radius in the active region, and which propagates to the terminal ends T 1 -T 4 , but after reflection to the active region, do not cause radiation due to 0, 180, 0, 180 degrees relative phasing. On reaching inner terminals 1-4, current swapping or reflection occurs as described in copending Specification 1,469,156. The outwardly propagating waves reaching the active region the second time still have a 0, 180, 0, 180 degrees relation and do not cause radiation, until they have undergone a further phase shift by reflection at the ends T 1 -T 4  and reappear in phase in the active region.
Patent GB-180606-A (GB)
Title: A new or improved safety device for pit cages, lifts and the like
IPC: B66B5/24
Filed: 1921-09-01
Abstract: 180,606. Mather, T. Sept. 1, 1921. Catch gear of mine-cage type.-In safety suspending apparatus for mine cages, lifts, &c. suspension chains are attached to the free ends of levers pivoted to the top of the cage and crossed to support a heavy cross-bar which is pulled downwards by springs and in operative connection with levers carrying wedges engaging the guideropes. The wedges 17 are engaged by the lower ends of levers 12 pivoted to the cage at 13 and pivotally connected to vertical bars 10, which are slidably mounted on the sides of the cage. The bars 10 are connected by a cross-bar 8 which is pulled downwards by springs 22 and is normally supported by levers 1 pivoted in the top of the cage and connected by chains 4 to the hoisting- rope. Lateral play of each wedge is prevented when out of action by the engagement of the inclined face 27, Fig. 3, of ahead 26 with a correspondingly inclined face 28 on a plate 25 secured to the guide 20. The head 26 is connected to the wedge 17 by a pin 23 passed through a slot 24 in the plate 25.
Patent GB-447503-A (GB)
Title: Improvements in divisible rims for vehicle wheels
IPC: B60B25/04
Filed: 1934-11-20
Abstract: 447,503. Vehicle wheels. FORSE, L., 52, The Avenue, and GLIDDON, J., 3, High Street, both in Yeovil. Nov. 20, 1934, No. 23217. [Class 144 (ii)] A rim comprises a collapsable side-flange d formed in hinged segments one of which is permanently secured to the main rimpart c, as by rivets f<1>. The closing-segment j may be secured by a bolt and nut p. In a modification, the segment j is completely removable.
Patent GB-1361147-A (GB)
Title: Photoconductive compositions
IPC: G03G5/06
Filed: 1972-05-18
Abstract: 1361147 Oxazolidine and thiazolidine derivatives EASTMAN KODAK CO 18 May 1972 [19 May 1971] 23333/72 Heading C2C [Also in Divisions C4 and G2] Photoconductors for use in an electrophotographic composition are compounds of formula wherein R 1  is carbazolyl or julolidyl, or is aryl substituted at least by an amino group, R 2  is H, alkyl or aryl, R 3  is H or optionally substituted alkyl, aryl or benzylideneamino, W and X are each O or S, Z is O, S, or arylimino and n is 0 or 1. The compounds are prepared from aldehydes by conventional condensation reactions. In compounds specified, W is S or O, Z is S or phenylimino, X is O, R 2  is H, n is 1 or 2, R 1  is 9-ethylcarbazol-3-yl, 9-julolidyl or has the formula R 4 R 5 N-R 6 -, wherein R 6  is naphthyl, phenyl, methylphenyl or methoxyphenyl, R 4  is methyl, phenyl, bromophenyl or tolyl, R 5  is methyl, phenyl, tolyl, bromophenyl or (3-ethyl- 4 - oxo - 2 - thioxo - 5 - thiazolidinylidene)- methylphenyl, R 3  is propyl, phenyl, ethyl, carboxymethyl, dimethylaminophenyl or pdiphenylaminobenzylideneamino. Preparation of certain aldehyde starting materials is disclosed. E.g. 4-di(p-tolyl) aminobenzaldehyde is prepared by reacting 4,4<SP>1</SP>-dimethyltriphenylamine with phosphorous oxychloride in dimethylformamide and hydrolysing; similarly 4,4<SP>1</SP>-diformyl-N-methyldiphenylamine is prepared from N-methyl-diphenylamine, and pformyl - m - methyltriphenylamine from mmethyltriphenylamine, the latter being prepared by reacting diphenylamine with m-iodotoluene in the presence of anhydrous potassium carbonate and copper.
Patent GB-160197-A (GB)
Title: An improved process and apparatus for drying materials especially leather by means of gases
IPC: C14B1/58
Filed: 1919-09-23
Abstract: 160,197. Fairrie, J. L. Sept. 23, 1919. Chambers; air and gases, controlling temperature, humidity, and direction of flow of.-The humidity of gases entering drying-apparatus for leather &c. is controlled by a hygrometer or equivalent which automatically effects the by - passing of part of the moist air leaving the drier to mingle with the entering atmospheric air. The apparatus shown comprises a tunnel drier x containing hides, supplied with air from a fan &c. a, the air being partly drawn through a connecting pipe from the exit end of the drier. Heating may be effected by a series of separate steam heaters c. The heat may be controlled by relays acting on the steam valves to open or close them fully, and actuated from dry bulb thermometers; the main steam valves are also adjustable by hand. The humidity is maintained constaut by wet bulb thermometers d, Fig. 4, actuating a D- slide valve k through an electrical relay e motor f and gearing to control the proportion of moist air leaving the drier which passes away.
Patent GB-1116300-A (GB)
Title: Improved holder for lipsticks and like solid or semi-solid substances
Inventor: TERRILL EDWIN L
IPC: A45D40/04
Filed: 1967-05-19
Abstract: 1,116,300. Cosmetic &c. holders. RISDON MANUFACTURING CO. 19 May, 1967, No. 23351/67. Heading B8P. In a cosmetic &c. holder, the screw-threaded portion of the carrier 16 is resiliently deformable at least at its inner end to allow assembly by passing it over the complementary thread 26 in the base part 12 without interengagement, the free end also having projections 50 to prevent subsequent disengagement of the threads by normal screw action.
Patent GB-224211-A (GB)
Title: Improvements in single tooth driving mechanisms for counting mechanisms
IPC: F42C9/06
Filed: 1924-10-04
Abstract: 224,211. Grimme Natalis & Co., Akt.- Ges. Nov. 3, 1923, [Convention date]. Toothed wheels.-A single-tooth driving device for counting-mechanism comprises a sleeve a having axial slots b at each end, which receive a double elbow piece e inserted through the bore d of the sleeve so that one end e<2> just fills one slot b and the other end e' projects beyond its slot to constitute the single tooth. The sleeve is placed on an operating shaft, the central part of the piece e taking into a keyway in the shaft. In a modification, the central rib c of the sleeve between the slots b is of dovetail shape and the elbow piece is swaged thereto in order to dispense with the shaft.
Patent GB-694735-A (GB)
Title: Improvements in or relating to wrapping machines
IPC: B65B49/04
Filed: 1950-09-25
Abstract: 694,735. Wrapping-machines. FORSTER. L. G. Nov. 12, 1951 [Sept. 25. 1950], No. 23468/50. Class 94(i) In a wrapping-machine in which side-folding operations are carried out on a packet as it is moved along a bed by a conveyer, the leading side-folding plates are formed with a plurality of vertically-spaced slots or gaps parallel to the bed and leading into downwardly-inclined slots or gaps extending from the top to the bottom of the plates, whereby side-folding operations may be carried out on packets of different depths without altering the side plates. As shown in Figs. 2, 3 and 4, each leading side plate is built up from a number of strips 15 of different lengths formed with side extensions 16 and secured together by screws 20 with interposed distance pieces 22 to define slots 14. The lowermost strip is formed with a vertical flange 17 secured by screws 18 to a rail 19 on the bed 1, and an intermediate strip is formed with a flanged extension 23, 24 which rests on distance pieces 30 and is held down by nuts 28 on a bolt 25 which is encircled by a spring 26 and passes through a sleeve 27 welded to the extension 24. Vertical adjustment of the group of strips is effected by using distance pieces of different thickness. The ends 12 of the strips are rounded to facilitate the initial tucking in of the wrapper, and their rear ends are chamfered and tapered so as to lead into the downwardly-inclined slot formed between the leading plate and the adjacent folding plate 4. In a modification, Figs. 5 and 6 (not shown), the distance pieces 30 are omitted and the group of strips is located by spigots secured to the rail 19 and passing through bosses on the extension 24, vertical adjustment being effected by screwing-up or unscrewing the nuts 28. Specification 680,115 is referred to.
Patent GB-875705-A (GB)
Title: Concrete block moulding machine with displaceable mould-filling box
IPC: B28B13/02
Filed: 1959-07-08
Abstract: 875,705. Moulding concrete blocks. KNAUER, G. July 8, 1959, No. 23476/59. Class 87(2). Concrete blocks are moulded in a mould 5 which can be raised and lowered in a frame 1 on guides 6, the frame being on wheels 2, 3 and the moulded blocks being deposited on the ground in succession as the frame travels in the direction of the arrow. An open-bottomed hopper 9 rests on a table 8 extending from the mould 5 in the direction of travel of the frame. When concrete has been placed in the hopper 9 it is brought over the top of the mould by the operation of a hydraulic cylinder 16, acting through a bell crank 13, 14 and rod 11. The concrete is compressed in the mould by a plunger 4 and consolidated by a vibrator 17. After the operation the mould 5 is raised, the hopper 8 rising with it, and the moulded block remaining on the ground. The hopper may be moved by a rack and pinion.
Patent GB-1017535-A (GB)
Title: Device for cutting merchandise-filled cartons so as to form one or more trays
Inventor: KRAMLICH MILTON RAYMOND
IPC: B65B69/00
Filed: 1963-06-13
Abstract: 1,017,535. Bag filters for gases. KUTZKWIK Inc. June 13, 1963, No. 23689/63. Heading B1T. [Also in Divisions B5, B8 and F4] Saw-dust and debris from a circular saw apparatus (see Division B5) is collected in a bag 108, Fig. 2, as it falls under gravity into an opening 102, and is sucked into the bag via a duct 106 by an impeller disc 110, Fig. 9 (not shown), on a shaft 34 driven by a motor M. A blower 116, having a scroll 118 attached to a slotted back plate 22 of a framework 20, causes a stream of air to be directed towards the bottom of the framework, so as to produce a greater negative pressure at the intake opening 102.
Patent GB-1326139-A (GB)
Title: Semiconductor crystal
IPC: C30B15/04
Filed: 1971-04-19
Abstract: 1326139 Melt grown crystals INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [23 March 1970] 23737/71 Heading B1S [Also in Division H1] A method of producing a semiconductor crystal of desired resistivity by accurately selecting the impurity concentration of a semiconductor melt from which the crystal is grown comprises measuring the resistivities at various points along an elongated single crystal of material containing a dopant, cutting the crystal into portions, selecting a portion according to its resistivity, and then cutting such portion into wafers, polishing, dicing and cleaning the wafers, and taking a desired number of dice and adding them to the semiconductor melt. Additional steps for stringent impurity levels comprise measuring the resistivities of each wafer and segregating the wafers into batches of like resistivity. As a further measure the dice of each batch may be thoroughly mixed to ensure reproducible concentrations. The method is said to be particularly useful where high resistivity, i.e. low impurity concentration, crystals are to b egrown from the melt.
Patent GB-918638-A (GB)
Title: Circular knitting machines
IPC: D04B15/92
Filed: 1961-07-03
Abstract: 918,638. Knitting machines. SINGERFIDELITY Inc. July 3, 1961 [Nov. 10, 1960], No. 23883/61. Drawings to Specification. Class 74 (2) .  A circular knitting-machine having pneumatic take-down mechanism has means mounted adjacent the lower end of the needle cylinder and in the pneumatic discharge tube through which the fabric is drawn, to ionize the air flowing downwardly through the tube to thereby eliminate static charge between the tube and the fabric. Specification 813,557 is referred to.
Patent GB-723278-A (GB)
Title: Process for bonding polyamides to polyvinyl chloride or copolymers thereof
IPC: D06N3/06
Filed: 1952-09-24
Abstract: Polyamides are bonded to polyvinyl chloride, copolymers thereof, or substrata, e.g. textiles, paper, or synthetic resinous material, precoated therewith by applying a first intermediate layer consisting of a solution of a polymer or copolymer of an acrylic or methacrylic acid ester and thereupon applying either a solution of nitrocellulose and polyamide or a second intermediate layer of a solution of nitrocellulose followed by applying a polyamide.  The coated sheet is an artificial leather and its properties may be improved by subjecting the sheet after drying to a further heating to 180-220 DEG C. preferably by infra-red irradiation.  The examples relate to textile fabric precoated with plasticized polyvinyl chloride.  The nitrocellulose should be alcohol soluble and the solutions may contain a sulphonamide softener.  Exemplified solvent for methacrylic acid methyl ester is a mixture of esters and tetrahydrofuran, while that for the nitrocellulose and polyamide is a mixture of alcohols which includes a minor proportion of water.  Formaldehyde may be included in the polyamide solution for hardening purposes.
Patent GB-276168-A (GB)
Title: Improvements in and relating to devices for removing pneumatic road-vehicle tyres from rims of the solid rim type
IPC: B60C25/02
Filed: 1926-09-28
Abstract: 276,168. Kwast, A. P. Sept. 28, 1926 Tyres, elastic, and tyre covers, tools for removing and replacing.-A tool for use in removing tyres from wheel rims of the type having a detachable side flange, comprises bars 1, 2, the bar 1 sliding in guides 3 on the bar 2. Jaws 14, 15 on the bar 2 grip the fixed rim flange 10, and a foot 9 on the bar 1 is adapted to press against the tyre edge, as shown in Fig. 2. An operating lever 4, pivotally carried by a lug 5 on the bar 2, has a pin 6 to engage one of a series of holes 7 in the bar 1. A steadying handle is formed on the bar 2. When the tool is not in use, the handle 4 is disengaged from the hole 7, and may be collapsed to the form shown in Fig. 1. Specification 27870/11 is referred to.