baber/WOPTO huggingface dataset:
Patent GB-236945-A (GB)
Title: Improvements in supports for brushes of dynamo-electric and like machines
IPC: H01R39/38
Filed: 1925-07-08
Abstract: 236,945. British Thomson-Houston Co., Ltd., (Assignees of Underwood, L. E.). July 11, 1924, [Convention date]. Brush-holders.-A stud for a brush-holder is made of the material known under the registered Trade Mark Bakelite or the like, threaded at one end to receive a nut by which it is secured to an arm 13, a key 17 preventing rotation of the stud on the arm. A collar 11 hinders sparking between the brush and the arm 13. The stud is covered with a metal sleeve 14 the edge of which is turned over to engage with a groove in the stud. In the form shown in Fig. 3, the collar 20 is separate from the stud, and the stud and collar are provided with metallic reinforcements, the reinforcement 21 in the stud being formed with an expanded head, as shown.
Patent GB-794580-A (GB)
Title: Improvements in or relating to pipe couplings or the equivalent
IPC: F16L21/06
Filed: 1955-06-17
Abstract: 794,580. Pipe couplings. KIRK & CO. (TUBES), Ltd., and BANFILL, H. J. June 18, 1956 [June 17, 1955], No. 17531/55. Class 99(1). Semi-cylindrical iron or steel housings 1 are bolted together or hinged at one side so as to bridge the ends of pipes 5, and a bush 4 made of rubber, plastic, fibre &c. is fitted on the end of each pipe, the housings 1 being clamped together to deform the bushes and provide seals between the pipe ends and between the housing and the outer faces of the pipes. The inner face of each part of the housing and the outer circumferential face of each of the bushes is formed with ribs and grooves which partly correspond. A groove 6 on each bush is engaged by ribs 7 on the housing and a rib 8 on each bush engages for a greater part of its axial length in grooves 9 on the housing. The meeting ends of the bushes are compressed by a central circumferential rib 10 in the housing which may be of larger diameter than ribs 7, which deforms the ends of the bushes and effects the seal. Each part of the housing is formed with an internal groove 11 for receiving a circumferential flange 12 on the outer end of the bush so as to locate it in the correct position in the housing. Each bush 4 has a plain internal surface with an inwardly directed flange 4a, against which the pipe end rests when the bush is fixed in position.
Patent GB-1393216-A (GB)
Title: Liquid crystalline nematic substance comprising diesters of 2-substituted hydroquinone and applications thereof
IPC: C07C69/773
Filed: 1973-05-21
Abstract: 1393216 Substituted benzoyl esters of 2- substituted hydroquinone WERK FUR FERNSEHELEKTRONIK VEB 21 May 1973 [5 Oct 1972 23 Nov 1972 (2)] 17665/73 Heading C2C [Also in Divisions C4 and H4] The invention comprises compounds of the formulae wherein R 1  and R 2  are C 1  to C 10  alkyl or alkoxy, or C 2  to C 11  alkanoyloxy or alkoxycarbonyloxy groups and R 3  is Cl, Br, CH 3 , C 2 H 5 , CH 3 CO or CH 3 OOC. Compounds in which R 1  = R 2  may be obtained by reacting the appropriate 2- substituted hydroquinone with twice the molar quantity of the appropriate benzoyl chloride in pyridine. Compounds in which R 1  # R 2  may be obtained by (a) reacting a mono-4-substitutedbenzoyl-2-substituted hydroquinone with a 4- substituted benzoyl chloride; (b) reacting a 2- substituted-hydroquinone with a 4-substituted benzoyl chloride to form a mixture of the two possible mono-(4-substituted-benzoyl)-2-substituted hydroquinones and then reacting this mixture with a different 4-substituted benzoyl chloride to form a mixture of the two possible diesters; and (c) simultaneous esterification of the two OH groups of the 2-substituted-hydroquinone with two or more different 4-substituted-benzoyl chlorides to form a mixture of the isomeric diesters. Examples are given for the production of the compounds. They have nematic liquid crystal properties and may be employed in electro-optical display devices.
Patent GB-883217-A (GB)
Title: Improvements in or relating to brassieres
Inventor: DICKER DOUGLAS
IPC: A41C3/00
Filed: 1959-05-25
Abstract: 883,217. Brassieres. LEFFMAN Ltd., S. May 24, 1960 [May 25, 1959], No. 17685/59. Class 141 In a brassiere provided with crossed back straps 22, 23 extending from the rear edges of side panels 14, 13 respectively, a horizontal row of anchoring devices is provided below each breast cup for selective engagement by hooks 24 on the free ends of the back straps. The anchoring devices comprise open-ended channels 25, 26 formed between pairs of elastic strips 15, 17; 16, 18 respectively by stitching or interweaving along spaced lines 19. In a modification the anchoring devices consist of single or double rows of eyelets or wire strips sewn to a fabric strip.
Patent GB-912830-A (GB)
Title: 1,1-dicyclohexyl-2-(2-piperidyl) ethylene and salts thereof
IPC: C07D211/22
Filed: 1961-05-16
Abstract: The invention comprises 1,1-dicyclohexyl-2-(21-piperidyl)ethylene, its acid addition salts and the preparation thereof by dehydrating 1,1 - dicyclohexyl-2(21-piperidyl)ethanol, preferably with phosphoric acid, alcoholic hydrogen chloride or toluene sulphonic acid.  The compound of the invention may also be prepared by hydrolysing the complex formed from phenyl lithium, a -picoline and dicyclohexylketone to give 1,1-dicyclohexyl-2(21-pyridyl)ethanol and reducing this to the 21-piperidyl ethanol before dehydration. Pharmaceutical compositions useful as coronary dilators contain the compound of the invention or its salts in an orally administrable form, e.g. tablets, capsules, syrups or suspensions.
Patent GB-545939-A (GB)
Title: Improvements in or relating to sheet feeding apparatus
IPC: B65H1/26
Filed: 1940-12-18
Abstract: 545,939. Feeding sheets. OSBORN, H., and THRISSELL ENGINEERING CO., Ltd. Dec. 18 1940, No. 17805. [Class 100 (i)] In a sheet-feeding apparatus for feeding boards to container-making machines the piles B are raised to a separating mechanism by means of elevators 5 comprising two pairs of vertical columns fitted with helical cam surfaces of opposite thread adapted to engage rollers 6 on trolleys 39 which support the piles. The conveyers are driven by worm gearing 9, 10, from an electric motor 24, and normally this drive takes place through reduction gearing under control of a switch operated by an arm 22 fitted with a roller 48 engaging the top of the pile and arranged to cut out the drive when the pile is high enough to permit of the action' of the suction separators 1 which are moved by cam-and-lever mechanism so as to raise a sheet and then advance it to a drop roller feed 14. The drive is automatically restarted when the pile is low. At the end of the feed from one pile, a roller 6 on the trolley 39 actuates a switch 34 (not shown) which energizes electromagnets and operates a pair of interconnected clutches so as to throw-out the reduction-gear drive of the elevators and throw-in a direct drive which raises the empty trolley 39 to a position in which it can be returned to a position for refilling, the trolley being transported by a pair of conveyers 35, 36, which are driven by sprocket gearing which is put into action by keys put into operation by electromagnets 72 controlled by the switch 34. As the trolley of the used pile is raised a new pile is fed to operative position, and a further trolley can be fed by the conveyer 36 into a position ready to receive a new pile. The trolleys are advanced over guide rails 2 by the conveyor chains or they may be advanced by hand. The switch 34 may operate a signal device to indicate when this advance should take place. The trolleys are nitched at positions corresponding to the suction device 15. According to the Provisional Specification the piles are raised by chains instead of screw-mechanism, and the manner of returning the empty trolleys is different. The empty trolleys are removed to guide rails by a plunger which is put into action electrically when a loaded trolley runs down a pivoted table arranged to feed a loaded lorry to its elevator.
Patent GB-1108116-A (GB)
Title: Improvements in or relating to altimeters
IPC: G01S13/34
Filed: 1966-04-22
Abstract: 1,108,116. Radio altimeter. MARCONI CO. Ltd. 22 April, 1966 [11 June, 1965], No. 17834/66. Heading H4D. The invention relates to a modification of the altimeter shown in Fig. 4, of Specification 1,108,116, which operates on the basic principle that by varying the modulation index of a frequency modulation transmission until the amplitude of a selected side band component of the resultant beat signal has fallen to a predetermined fraction of its level with no modulation, the altitude may be read directly off a meter 12, Fig. 1, measuring the modulation index. A microwave transmitter 1 is continuously frequency modulated by 2 at a high frequency fM 1  (3À3 mo/s.) and intermittantly by 9 at a low frequency fM 2  (200 kc/s.). The frequency deviation caused by 9 is controlled by a variable attenuator 10, and the thus controlled modulation signal is applied to modulate the transmitter 1 via a gate, opened and closed at a rate fs (4 kc/s.). The doubly modulated transmission signal is fed to the ground, and the echo signal is mixed in mixer 4 with a small part of the transmission signal, to produce a beat signal analyzable into side band components having Bessel function amplitudes. The side bands include permanent ones separated by fM 1 , and intermittent ones separated by fM 2 . A band pass filter 6 selects the first fM 1  (2À3 mc/s.) side band, together with its surrounding fM 2  sidebands and doppler signals. When no fM 2  frequency modulation is applied to the transmitter, the amplitude of the fM 1  sideband is of its maximum. When gate 11 is closed however, some of the energy in the sideband is distributed in the surrounding fM 2  sidebands, and the amplitude of the fM 1  sideband falls by an amount dependent on the frequency deviation controlled at 10 and the altitude. Such a fall in amplitude is counteracted by a two position attenuator 7, switched at rate fs in synchronism with gate 11 and offering greater attenuation when no fM 2  modulation is applied. It is thus sought to produce a signal of constant amplitude at the output of attenuator 7. The output is thus mixed with sideband frequency fM 1  in mixer 8, to produce a doppler signal fD amplitude modulated at a frequency fs, Fig. 3 (not shown). A filter 14 extracts the signal fs. The amplitude of this should be zero and accordingly an amplitude indicator 15 controls variable attenuator 10 until this state occurs. Fig. 4 (not shown) shows the amplitude indicator in more detail and uses the fact that the fs amplitude modulation changes phase by 180 degrees as it passes through zero amplitude.
Patent GB-1173376-A (GB)
Title: Apparatus for testing the fluid tightness of containers
Inventor: MILLS ALBERT EDWIN
IPC: G01M3/32
Filed: 1967-04-18
Abstract: 1,173,376. Apparatus for pressure testing containers. COSMOPOLITAN ASSURANCE CO. Ltd and P.G. DAVEY. April 9, 1968 [April 18, 1967], No. 17851/67. Heading G1S. Apparatus for testing a container 9 comprises an air compressor 1, a regulator 2, a flow detector 3 containing a thermistor, and a valve 8 connected to a terminal port 4. Valves 7 and 12 are connected in a conduit 6 by passing the flow detector 3 and valve 8, and a valve 10 may be vented to atmosphere. An automatic switch 14 operated by a differential pressure device 15-19 controls valves 7 and 8, and a manual switch 13 operates valves 10 and 12, these pairs of valves being operated alternately by their respective switches so that when say valve 7 is open valve 8 is shut and vice versa. Air-pressure greater than the test pressure is supplied by a second regulator 26' which supplies both the switches, these switches comprising two way valves which selectively apply greater than test pressure to the valves 7, 8 and the valves 10, 12. In Fig.2 the flow detector 3 comprises a chamber 20 with inlet and outlet conduits and thermistors 23, 24, the thermistor 24 being used as reference and being located out of the path of airflow through the chamber so that the thermistor 23 is cooled preferentially and the differential change in the resistances of the thermistors 23 and 24 is used to provide an indication of the flow. In Fig. 3, and Fig.4 (not shown) three thermistors are used and located as shown, the thermistor 30 being a heating element which when air is flowing transfers more heat to the downstream thermistor than to the upstream thermistor, the differential change in resistance being used to indicate flow and being measured by bridge circuits as in Figs.5, 6 (not shown).
Patent GB-1246756-A (GB)
Title: Measuring dimensions of objects
IPC: G01B13/04
Filed: 1970-04-15
Abstract: 1,246,756. Measuring lengths. TOKYO SHIBAURA ELECTRIC CO. Ltd. 15 April, 1970 [16 April, 1969], No. 17891/70. Heading G4H. Apparatus for measuring the width of a steel sheet 10, comprises an extended light source 11 and a photo-electric detector unit 13. The unit 13 is scanned from stop switch 27 across the steel plate to stop switch 28. The photoelectric detector detects when the steel plate is beneath the detector and sends a signal to enable gate 30. Unit 13 also carries a magnetic pick-up 21 which operates in conjunction with a magnetic scale 22 having magnetic pulses recorded thereon to produce a sequence of equiweighted pulses. These pulses pass through gate 30 to a counter 29, since gate 30 is only open while the detector is over the steel sheet 10 the count gives a measure of the width of the sheet. Switch 26 activates the unit, and switches 27 and 28 cause a reversal of the direction of the scan, so that successive scans on different sheets are performed in opposite directions. Modifications are described in which the device used for detecting the sheet operates with a laser beam, by reflected light from the steel sheet, by radiation from the sheet itself, using a fluidic proximity detector, and using magnetic or capacitative proximity heads.
Patent GB-480157-A (GB)
Title: Improvements in or relating to the manufacture of abrading or cutting tools of hard metal
IPC: B23D79/00
Filed: 1937-06-28
Abstract: 480,157. Moulding cutting tools. EISNER, F. June 28, 1937, No. 17924. Convention date, July 2, 1936. [Class 87 (ii)] [Also in Group XXII] Cutting-tools such as files, milling cutters, reamers or drills, are made from one or more members formed with a number of grooves providing cutting edges 54 in a moulded piece of hard metal such as tungsten carbide and titanium carbide cemented with cobalt. To form a file a number of grooved plates 11-15, Fig. 2, may be soldered to one or both sides of a base 10. The tops of the teeth may then be ground off level. To form a face milling cutter a number of sectors 21-23 may be similarly soldered to a base 20 or for a cylindrical cutter the grooved pieces may be of curved form, Fig. 4b, and soldered to a base 30 after sintering and shrinking ; or the cutter may be in ring form. Flat pieces may be made in an automatic tablet-compressing machine, Fig. 5, the powdered metal being run from a container 4 into a mould formed between a lower die 2 covered by a rubber layer 6 and an upper die 3 formed of a number of bevel ground steel plates 7 .. 9 pressed or soldered together. The rubber layer serves to secure uniform density in the pressed plate. After pressing the top die is withdrawn, the lower die raised, and the container 4 moved over the mould to push the finished pressing aside after which it is sintered. To make a cylindrical cutter entirely of hard metal, an. external die 45, Fig. 6b, fitted with radiallyarranged bevelled plates 41 coacts with lateral dies 46, 47 which are exteriorly toothed to fit in the outer die and covered with rubber layers 50, 51. Two toothed steel plates are located between the members 46, 4 and are profiled to form bosses on the work, the central hole being formed by a plunger 52. Specifications 310,885, [Class 82 (i)]. 327,004, 330,170, and 331,121, [all in Class 83 (ii)], are referred to.
Patent GB-1148072-A (GB)
Title: A method of mechanically finishing workpieces
Inventor: MAASBERG WOLFGANG
IPC: B24C1/04
Filed: 1966-04-25
Abstract: 1,148,072. Blasting. WOMA-APPARATEBAU W. MAASBERG & CO. G.m.b.H. 25 April, 1966, No. 17930/66. Heading B3D. A method of mechanically finishing a workpiece by removing some of the material thereof, particularly cutting or boring, comprises producing a high speed high pressure liquid jet in a blast nozzle of 2 to 3 millimetres diameter bore at pressures of 100 to 900 atmospheres and directing the jet on to the workpiece, a particulate liquid being mixed with the jet. The liquid is preferably water. The particulate material may be sand, quartz sand, corundum, flue dust or the like; it may be directly mixed with the liquid when the jet is produced in the blast nozzle or it may be mixed with the liquid only at the workpiece. Alternatively, the particulate material may be freed from the workpiece by the jet. Apparatus comprises a housing 1 enclosing an injector 2 to which water is supplied, through a conduit 3, by a pump, e.g. a piston pump. A tube 6 is connected with a supply contained for particulate material. An interchangeable nozzle 4 is secured by a cap 5.
Patent GB-202126-A (GB)
Title: Improved means for fixing butterfly valves on spindles
IPC: F02M1/00
Filed: 1922-06-30
Abstract: 202,126. Constantinesco, G. June 30, 1922. Securing valves on shafts.- The disc of a butterfly throttle valve is secured to the spindle by a spring wire or strip passing through a hole in the spindle. The disc a is bored diametrally to receive a spindle d, and the spindle is bored at d to receive a spring wire e which rests in a slot c cut in the body of the disc and may have its ends left sharp, so that they cut into the material of the disc; in such case, the valve is pierced to allow access to the back of the wire in order to facilitate disengaging it. The wire may also be used for controlling the small air passages f through the throttle. Two such wires may be used, or a flat spring. The wire may fit closely against the bottom of slot, or the valve disc may be allowed a slight play on the spindle.
Patent GB-998457-A (GB)
Title: Improvements relating to ethanolamines
IPC: C07C215/12
Filed: 1964-04-30
Abstract: The invention comprises compositions containing one or more ethanolamines and an alkali metal borohydride in sufficient quantity to prevent substantial discoloration of the ethanolamine(s) in the presence of ferrous metal. Said compositions are obtained by adding the alkali metal borohydride, which may be in the form of dry pellets, a dry powder, or, preferably, an aqueous or aqueous alkaline solution, to the ethanolamine(s), preferably at 30 DEG  to 70 DEG C., whilst agitating the system.  When the ethanolamine(s) are to be stored in ferrous metal containers the borohydride may be added to the ethanolamine(s) before or after said ethanolamines are introduced into said containers. Specified amounts of borohydride employed are 0.001 to 0.05% by weight of the ethanolamine.
Patent GB-1490639-A (GB)
Title: Manufacture of crystals of group iii-v compounds
IPC: C30B11/04
Filed: 1975-04-30
Abstract: 1490639 Progressive crystallisation WACKER-CHEMITRONIC GES FUR ELEKTRONIK-GRUNDSTOFFE mbH 30 April 1975 [30 April 1974] 18057/75 Heading B1S Process for the manufacture of a monocrystalline or polycrystalline group III-V compound from a melt of the compound contained in a long crystallisation vessel, comprises progressively lowering the temperature of the melt from one end of the vessel to the other to below the solidification temperature with the temperature at one end of the vessel being lowered at a rate greater than that at the other end of the vessel such that a progressively steepening temperature gradient is set up along the length of the vessel. It is preferred, to carry out the process using a multi-zone furnace e.g. as shown in Fig. 4; either a fire zone furnace having a central zone 30 and side zones 31a, 31b, 32a, 32b or a seven zone furnace having a central zone 33 and side zones 34a, 34b, 35a, 35b, 36a, 36b, is used. The beat 10 is positioned eccentrically within the furnace and .at the beginning of the process the temperatures of the furnace zones are adjusted to give a profile 49 lying above the solidification temperature T 5 . The temperature of the side zones is then progressively lowered to give steeper temperature gradients as shown by profiles 50-53 to effect complete solidification in the beat 10.
Patent GB-180787-A (GB)
Abstract: 180,787. Wood, A. B. March 15, 1921. Indicating, optical devices for.-An electrostatic oscillograph or voltmeter comprises a piezo-electric crystal slice with means for applying a direct or alternating current potential in the direction of the electric axis of the slice, he dilation or contraction produced being determined by means giving measurable indications of the deformation. As shown, the piezoelectric crystal slice A is fixed at one end B and is positioned between two strips of tin-foil F making contact with spring arms G, to which the potential is applied. The free end of the slice is formed with a knife-edge D which cooperates with a fixed knife-edge E, a light mirror H being elastically cemented, for example, by soft rubber to both knife edges, or held against the knife-edges by a spring, so that the mirror is rocked through a small angle as the slice dilates and contracts. In another construction, two piezo-electric crystal slices are mounted together in opposite senses so that a greater movement is imparted to the mirror which in this construction is, in its normal position, parallel to the surfaces of the slices.
Patent GB-145784-A (GB)
Title: Improvements in electric switches
IPC: H01H13/62
Filed: 1920-07-02
Abstract: 145,784. Sachs, H. March 13, 1919, [Convention date]. Switches, quickbreak; handles. - A push-button-operated switch is latched in the closed position against the return action of a spring by a toggle device controlled bv an auxiliary push-button guided within the operating button and so arranged that the buttons alternately protrude according to the position of the contacts. In the construction shown in Fig. 1, the main push-button 2 carrying the contacts 6 for engagement with the fixed contacts 8 is guided upon the hollow stud 3 secured to the switch base. An auxiliary push button 1 guided within the main button controls a pair of toggle links 9, 11 pivoted at its inner end. A spring 13 pressing the button outwardly tends to press the outer ends of the links through gaps in the guide-tube. When the main button is depressed against the action of the spring 12 into the contact position, a shoulder 14 passes the ends of the links, which are then free to pass through the gaps and retain the switch in the closed position. In this position, the main button remains depressed and the tripping button protrudes, and by pressing the tripping button the toggle locking links may be upset to release the switch, whereupon it again assumes the posi. tion shown.
Patent GB-1033684-A (GB)
Title: Process for the production of tablets by the pressing of powder mixtures without previous granulation
IPC: A61K9/20
Filed: 1965-04-30
Abstract: Pharmaceutical tablets are made by mixing together powdered tablet ingredients (active compounds, fillers, diluents, &c.) and from 1 to 10% by weight of pulverulent polyethylene glycol, gelatin and/or polysaccharide (other than starch, modified starch and starch derivatives) and forming the mixture into tablets by compression without a prior granulation or moistening step. Examples relate to tablets comprising; (a) 2-methyl-3-o-tolyl-4(3H)-quinazolinone, (b) dimethylaminophenyldimethyl-pyrazolone, phenacetin and caffeine and, (c) meprobamate.