baber/WOPTO huggingface dataset:
Patent GB-253791-A (GB)
Title: A self-expanding packing for pump pistons and the like
IPC: F16J9/08
Filed: 1925-11-16
Abstract: 253,791. Miller, E. E. Nov. 16, 1925. Pistons; packing; attaching to rod.-A pump piston comprises heads 3, 18, with abutting bosses, mounted on a tapered and a cylindrical portion of the rod respectively. An india-rubber or other packing-ring 8 of U section is expanded by fluid admitted through ports 6, 19 in the heads and grooves 7, 21 in the bosses, the ports being controlled by the flanges of the packing. Reference has been directed by the Comptroller to Specification 245,303.
Patent GB-408959-A (GB)
Title: Improvements relating to apparatus for dispensing measured quantities of liquid
IPC: B67D7/36
Filed: 1932-10-17
Abstract: 408,959. Pump valves; relief devices. AVERY-HARDOLL, Ltd., and FRASER, J., Clerkenwell Green, London. Oct. 17, 1932, No. 28898. [Class 102 (i).] In apparatus employing a liquid-flow meter and a pump for dispensing measured quantities of liquid and in which the discharge line is maintained filled with liquid both before and after the delivery operation there is incorporated between the pump and meter a valve adapted to open automatically on the commencement of the pumping operation, to close when pumping ceases and to open automatically in the event of any increased or abnormal pressure in the discharge line between the valve and the discharge nozzle. When pumping commences the piston cylinder 5 is moved against its spring 7 by the pressure of the liquid on its annular portion 5<a> and opens a passage for liquid to the line 4 leading to the meter and discharge nozzle. During the movement of the piston, liquid in its casing is drawn through an orifice 3<e> connected to a pipe line leading to the return line from the air separator. When pumping ceases, the reduction of pressure on the inlet side of the valve results in the piston valve 5 closing under the action of its spring 7 during which movement liquid is drawn into the valve casing at the orifice 3<e>, the suction through which tends to produce a gradual closing of the valve. In the event of the creation of high pressure in the discharge line between the valve and the discharge nozzle, e.g. by expansion due to an increase in temperature, the piston valve 5 is forced off its seat 6 by pressure on its central portion and thus relieves the excessive pressure in that portion of the line.
Patent GB-1468303-A (GB)
Title: Clamp components
IPC: H01F27/26
Filed: 1974-06-28
Abstract: 1468303 Making transformer clamp members H HIRST 28 June 1974 28917/74 Heading B3A A method of making a clamp member comprises bending a strip of metal 30 along a line 33 parallel to its longitudinal axis and bending the strip about lines 34 transversely to its longitudinal axis to form a part, at least, of a rectangle. The strip is passed to a first punch tool (P1), Fig. 4 (not shown), where holes 21, 25, 26 are punched out and then to a second punch tool (P2), where a generally triangular portion 31 is removed at equal intervals between the punched holes 21. A cutting tool cuts off a strip length along a line 32 and the length is passed to a folding tool (F), where sides 16-19, Fig. 1, are bent at right angles to the plane of the strip along the line 33. The strip is then bent along the lines 34 to a square shape and semi-circular portions 32 in each triangular portion combine to form holes (22), Fig. 3 (not shown). The ends 36, 37 of the strip are welded together preferably by argon arc welding. The clamp member may be made up of two strips welded together at opposite corners of the square or one of the strips may form three sides of the square. A pair of clamp members are used to form a clamp for holding transformer core laminations together, the members being held by bolts 23 passing through the holes 21, (22).
Patent GB-833817-A (GB)
Title: A synchronisation arrangement for change-speed gears especially on motor vehicles
IPC: F16D23/06
Filed: 1957-09-16
Abstract: 833,817. Positive clutches. PORSCHE, F. Sept. 16, 1957 [July 10, 1957], No. 29049/57. Class 80 (2). In a change-speed gear synchronizing device wherein a slotted spring synchronizing ring is assisted by a locking-device fitted between the ring and the boss of the dog-carrier, a locking member is braced between stops lying opposite each other for each direction of rotation. A shaft 1 carries freely rotatable but axially fixed gears 2, 3, and a sleeve carrier 4 splined to the shaft and having an axially slidable sleeve 5. Dog-carriers 8, 9 are fitted to the bosses 13, 14 of the gears and have teeth 10, 11 engageable with the teeth 12 of the sleeve 5. Split spring synchronizing rings 15 are mounted on the bosses 13, 14 and located axially by spring-rings 16. Fitted between the bosses and the synchronizing rings are resilient locking bands 17, 18 which bear on stops 19 and 20. The bands are cylindrical in shape and their axes lie outside the axis of rotation of the shaft. The stop 19 is fixed to the boss 13 or 14, whereas the stop 20 is slidably mounted and has a lug 21 between the split ends of the synchronizing ring 15. For engagement of a dog clutch, the sleeve 5 is moved to the right or left and the tops of teeth 12 engage the periphery of the ring 15. This frictional effect drives the ring 15 until one end meets the lug 21, the ring then expands the band 18 through the stops 20 and 19, to further expand the ring 15 to provide a servo action, which retards movement of the sleeve 12 until synchronism is attained. In a modification, the bands, 17, 18, are of unequal length to provide greater synchronizing effort for downward gear changes. Specification 769,838 is referred to.
Patent GB-651952-A (GB)
Title: Improvements in or relating to the production of coffee extract
IPC: A23F5/34
Filed: 1948-11-10
Abstract: Fatty substances heterogeneous to coffee are added to an aqueous extract of roasted and ground coffee to retain the aroma, and the mixture is spray-dried to a powder.  The extraction is carried out in an extraction column under pressure and at a temperature of 120 DEG -140 DEG C.  Extract containing about 5 per cent of dry substance is collected at an outlet pipe of a circulating cooler attached to the column.  To retain the aroma, an aqueous emulsion of deodorized arachis oil having an oil content of about 40 per cent is mixed with the extract in the ratio of .5-1 litre of emulsion to 20 litres of extract.  The mixture is then homogenized and spray-dried to a powder.  Instead of arachis oil, 10 per cent of casein-free cream (containing about 20 per cent of milk fat) may be used.  Cream powder and sugar may be added to the coffee powder.  Animal or vegetable fats and oils can be used singly or in combination as aroma retainers.  The product may be pressed into tablets or cubes.
Patent GB-733917-A (GB)
Title: Improvements in or relating to electro-mechanical filters for sub-audio-frequencies
IPC: H03H9/46
Filed: 1951-12-13
Abstract: 733,917. Electromagnetic relays. SANGAMO WESTON, Ltd. Dec. 13, 1951 [Jan. 9, 1951], No. 29227/51. Class 38 (5). [Also in Groups XXXIX and XL (b)] A relay adapted to be operated by signals of a particular frequency comprises a moving coil 1, to which the signals are fed, connected by a resilient coupling 13 to a resiliently mounted arm 14 which operates contacts 15. The coil 1 and arm 14 are tuned to mechanical resonance at substantially the same frequency, and contacts 15 are only closed when the signal currents are of this particular frequency.
Patent GB-1095287-A (GB)
Title: Improvements in or relating to amplifiers
Inventor: CRAPPER DAVID HUGH
IPC: H03G1/00
Filed: 1963-07-24
Abstract: 1,095,287. Transistor gain control circuits. PLESSEY-UK Ltd. July 20, 1964 [July 24, 1963], No. 29344/63. Headings H3T and H4R. An amplifier comprising two or more transistors connected in cascade has an overall negative feedback loop including a diode or transistor arranged as a variable resistance element. Fig. 1 shows an embodiment in which a feedback path from the emitter follower output stage T2 to the base of the transistor amplifier T1 includes a diode D1 whose impedance is varied by a current applied to terminal S to vary the feedback and therefore the gain of the amplifier. An alternative arrangement, Fig. 2, uses a field effect transistor FET to vary the impedance of the feedback circuit and therefore the gain of the amplified formed by transistors T1, T2 and T3.
Patent GB-1220307-A (GB)
Title: Workpiece measurement method
IPC: G01B11/08
Filed: 1969-06-11
Abstract: 1,220,307. Measuring thickness. POLITECHNIKA WARSZAWSKA. June 11, 1969 [June 12, 1968], No.29496/69. Heading G1A. Width of a workpiece 2, such as a wire, fibre, liquid stream, or slit, is determined by irradiating the workpiece by radiation from a laser 1 and locating a detector, such as 5, intermediate the maxima or minima of a lateral diffraction fringe so that movement of the fringe, due to variation in width of the workpiece, results in a change in the detector output. In order to compensate for variations in laser output or displacement of the wire, a number of detectors, 4 to 7, may be positioned to detect movements of more than one fringe so that workpiece width changes are detected by detecting differences between detector outputs. The radiation detector may include an optical device to relay the optical signal to a measuring device.
Patent GB-1170326-A (GB)
Title: Improvements in or relating to Piston and Connecting Rods
Inventor: THOMSON JAMES TENNANT
IPC: F02B41/00
Filed: 1969-05-19
Abstract: 1,170,326. Pistons. J. T. THOMSON. 19 May, 1969, No. 29569/67. Heading F2T. A light alloy piston for an I.C. engine has a crown A which is moved away from the skirt B at the beginning of the downward stroke to maintain a higher pressure over the first portion of the working stroke, a gunmetal partition plate M being housed in slots provided in the crown and fixed thereto by setscrews N. The connecting rod J pivots about a gudgeon-pin G in the skirt and carries, in a forked extension, a top gudgeon-pin I which operates in an inclined slot F provided in the partition plate.
Patent GB-1348731-A (GB)
Title: Interconnection of electrical devices
Inventor: SMITH G E
IPC: H01L49/02
Filed: 1971-06-24
Abstract: 1348731 Etching WESTERN ELECTRIC CO Inc 24 June 1971 [29 June 1970] 29612/71 Heading B6J [Also in Division H1] A process for making electrical conductor patterns on substrates comprises forming on a substrate 12A a layer of non-uniform conductive material 11A exhibiting the property that in a suitable etching medium the etching rate parallel to the plane of the layer is greater than the etching rate normal to the plane. This results in enhanced undercutting below etch resist 13A defining the circuit pattern and thus produces more pronounced trapezoidal cross-section conductors which allow a more uniform layer of insulating material to be formed thereover. An insulating layer is then formed over at least part of the conductive pattern, a further conductive layer then being deposited if required. The anisotropic etching rate can be produced by forming layer 11A from a binary alloy, e.g. copper/gold, the composition of which varies through the layer, the composition having a greater proportion of easily etchable material, e.g. copper, in the region adjacent resist 13A than in the region adjacent substrate 12A. For copper/gold the etchant is an aqueous solution of ferric chloride or 70% nitric acid. Alternatively, the layer 11A may comprise a highly doped polycrystalline semi-conductor, e.g. silicon, the lattice disorder of which is varied, e.g. by ionic bombardment or deposition conditions. For silicon, the etchant may be 3 parts by volume of a 48% aqueous solution of hydrofluoric acid, five parts a 70% aqueous solution of nitric acid, 3 parts of glacial acetic acid, and 2 parts of a 3% aqueous solution of mercurous nitrate. The anisotropic etching characteristic is provided as the more disordered regions of layer 11A etch faster than the more ordered regions. As another example, layer 11A may be highly doped p-type silicon whose doping is higher nearer to resist 13A. The substrate may be an oxide (22) (Figs. 3A-3C, not shown) coated silicon crystal (21), the conductive layer (23) then preferably being of polycrystalline silicon. The conductive pattern interconnects various elements, isolated from each other by PN junctions, provided in the crystal.
Patent GB-793645-A (GB)
Title: Improvements in or relating to sewage disposal means in vehicles
IPC: B61D35/00
Filed: 1955-10-18
Abstract: 793,645. Treating sewage. GIBSON, J. Oct. 16, 1956 [Oct. 18, 1955], No. 29638/55. Class 111. A sewage disposal means comprises a sewage digestion chamber 13, adapted for mounting in a vehicle such as a railway carriage or aeroplane, having an affluent inlet 13a connected to a lavatory basin and/or water closet through valve 12 and pipe 11. and an effluent outlet pipe 22. Affluent entering at the top of the chamber at 13a is directed downwards by the baffle 14 which causes a flow of effluent through a perforated portion 18a of a baffle 18 to the outlet pipe 22, the baffle 18 preventing the escape of sludge. The inlet pipe 11, chamber 13 and outlet pipe 22 have pipes 16, 17 and 23 leading to a main ventilation pipe 15, the pipe 28 connected to pipe 16, providing a fresh air intake, this pipe may have a valve 26. A valve may be provided at the bottom of the chamber 13 to permit cleaning of the chamber. The outlet pipe 22 is preferably of smaller diameter than the inlet pipe 11 to provide a slightly higher outlet velocity than inlet velocity. The tank 13 may be insulated and be provided with a heater to prevent freezing.
Patent GB-359176-A (GB)
Title: Carpet and like cleaning machines
IPC: D06G1/00
Filed: 1930-10-03
Abstract: <PICT:0359176/IV/1> Carpets, rugs, &c. are cleaned while passing them round a slowly rotating drum 6 by injecting liquid soap or other cleaning fluid from nozzles 44, which are displaced by the carpet and in so doing move a spring-pressed valve 50 which allows the cleaning liquid to flow from a reservoir 48 through flexible tubes 46 to the nozzles. The carpet then passes under brushes 33 which are reciprocated transversely across the face of the drum.  Several sets of brushes may be employed.  Following the brushes is a rinsing device comprising nozzles 65 from which rinsing fluid is ejected under pressure, displacement of the nozzles by the carpet opening a spring-pressed valve 72 from the reservoir 69.  The rinsing fluid is removed by vacuum nozzles 61, 62 to a vacuum chamber 58 which is closed by a sliding cover 76, the cover being withdrawn when a foot 74 is pressed back by the carpet.  The foot 74 also forms a wall which serves as a scraper to remove a large portion of the cleaning fluid from the surface of the carpet and at the same time serves to enclose one side of the rinsing and vacuum nozzle unit from free communication with the atmosphere.
Patent GB-785572-A (GB)
Title: A method and apparatus for continuously applying a protective coating to metal coated strip
IPC: B05D3/02
Filed: 1955-10-18
Abstract: Coating-compositions for metal-coated strip comprise (1) polyvinyl butyrol, polymerized rosin, isobutyl alcohol, acetone, isopropanol and minor amounts of water, phosphoric acid and chromium trioxide, (2) polyvinyl butyral isobutyl alcohol, acetone, ethyl alcohol and minor amounts of water, phosphoric acid and chromium trioxide, (3) polyvinyl butyral, polymerized rosin, ethyl alcohol, isobutyl alcohol, acetone, and minor amounts of water, phosphoric acid and chromium trioxide, (4) polyvinyl butyral, phenolic resin, isopropanol and isobutyl alcohol, (5) as (4) with the addition of toluol, acetone, ethyl alcohol, and minor amounts of water, phosphoric acid, chromium trioxide and butyl alcohol, (6) phenolic resin, isopropanol, butyl alcohol and toluol.
Patent GB-714824-A (GB)
Title: Improvements in or relating to connecting and cooling arrangements in electric storage batteries
IPC: H01M10/50
Filed: 1952-11-25
Abstract: 714,824. Batteries. AKTIEBOLAGET TUDOR. Nov. 25, 1952, [April 4, 1952.] No. 29864/52. Class 53. The bus bar 3 which connects the plates of like polarity in an accumulator is provided with a copper insert I4 having a longitudinal channel I5 through which water is circulated to cool the bus bar and electrolyte. Circulation of the electrolyte is produced by the cooling of the upper layers. Water is introduced into and withdrawn from the channel I5 through the hollow terminal lugs 9 which are provided with nipples 24 for connection to a water supply system. Adjacent cells are connected electrically by copper tubes I8, I8<SP>1</SP> which are connected together by a flexible braided copper tube 23. An inner flexible tube 22 conveys the cooling liquid from one cell to the next. Fig. 2 shows in plan two cells 2, 2<SP>1</SP>, each bus bar 3, 3<SP>1</SP> having four hollow terminal lugs, the cells being connected by hollow conductors 23. Cooling liquid in a pipe 26 is introduced into a branched pipe 25 and passes into the two lugs I8<SP>1</SP>a, I8<SP>1</SP>b and through the bars 3<SP>1</SP>, 3, being withdrawn through a pipe 28.
Patent GB-263991-A (GB)
Title: Improvements in and relating to wireless receiving apparatus
IPC: H01Q1/46
Filed: 1925-11-26
Abstract: 263,991. Cole, H. W. Nov. 26, 1925. Receiving systems; aerials. - A wireless receiver is connected by a single lead A to a collecting agency which may be an earth or an aerial. Fig. 1 shows a receiving circuit comprising a crystal D in parallel with a variable condenser C1 forming with an inductance L an oscillatory circuit. Fig. 2 shows an inductively coupled oscillatory circuit in which tuning is effected by varying the coupling between coils L1, L2. In a modification a variable condenser is provided connected in parallel with the dectector D. Specification 217,259 is referred to.
Patent GB-802300-A (GB)
Title: Improvements in and relating to holders for electric lamp bulbs
IPC: H01R33/00
Filed: 1956-10-01
Abstract: 802,300. Lamp-holders. UNITED-CARR FASTENER CORPORATION. Oct. 1, 1956 [Oct. 10, 1955], No. 29915/56. Class 38 (1). In order to facilitate the connection by crimping of a lead to a spring plunger lampholder contact 36, the shank 40 of the contact is of such a length that when pushed back against the spring 44, the recessed end 42 of the shank projects from the aperture 22 in the holder 30 that the lead can be connected thereto. The contact 36 is assembled with an insulating washer 34 which is biased against stops 46 in a metal shell 26 held in a rubber or plastic housing 18 by the engagement of tongs 32 with recesses in the housing. Resilient arms 28 are provided on the shell 26 for engagement with an aperture in a panel. Two contact members may be provided in the holder and the metal shell may be eliminated.
Patent GB-933264-A (GB)
Title: Improvements in and relating to a method for the production of foam material, and a mixing apparatus for carrying out the said method
IPC: B01F5/04
Filed: 1959-09-02
Abstract: <P\1> In an apparatus primarily for making a synthetic resin insulating foam, the main fluid, e.g. hardener, is supplied under high pressure to a mixing chamber 2 from a straight pipe having been previously foamed with air by passage through a section of the supply pipe filled with glass beads.  A solution or suspension of the resin (e.g. urea-formaldehyde) is injected under pressure through a nozzle 5 along the axis of the mixing chamber 2.  A helically grooved plug 6 may be provided in the injection nozzle so that the material is discharged with great velocity and a rotary motion whereby it is quickly mixed with the hardener, and at an angle of distribution such that complete mixing takes place before the material reaches the mixing chamber walls.  The mixing chamber may be enlarged to spherical form, and the extension 2a may be of reduced diameter as shown to connect with a hose, or may be formed as a discharge nozzle.
Patent GB-880756-A (GB)
Title: Vulcanisation process
IPC: C08L21/00
Filed: 1959-09-02
Abstract: A resinous reaction product having vulcanizing properties is made by reacting a substituted phenol resin made by the alkaline condensation of formaldehyde with one or more phenols substituted in the ortho- or paraposition with a substituent containing at least 3 carbon atoms with an "ansolvo acid".  Specified phenolic substituents are tertiary butyl, diisobutyl, phenyl and benzyl. "Ansolvo acids" are defined as being neutral compounds which, when dissolved in a solvent medium cause an increase in the hydrogen ion concentration of the solvent medium, e.g. the chlorides of zinc, gold and aluminium, specified solvents being water, alcohols, acid amides. anhydrous hydrogen halides and organic acids, The reaction products may be used for vulcanizing natural and synthetic rubbers.  In Examples (1) (2) and (3):- (1) and (2) a resin is made from octyl phenol and formaldehyde and after treated with stannous chloride and acetone; (3) a paratertiary-butyl phenol-formaldehyde resin is reacted with ferrous chloride and alcohol.  The remaining examples describe the use of the products of the invention for vulcanizing butyl rubber, natural, butadiene-styrene, and butadieneacrylonitrile rubbers, in the presence of conventional additives.
Patent GB-361517-A (GB)
Title: Improvements in or relating to electric circuit controllers
IPC: H01H83/12
Filed: 1930-10-08
Abstract: 361,517. Actuating rocking-bar controllers electromagnetically. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London, and CURTIS, A. H., The Lodge, Clapham Road, Bedford. Oct. S, 1930, No. 30138. [Classes 38 (iii) and 38 (v).] Contacts; no-volt release.-A switch is so constructed that upon movement of an operating member in one direction, a mechanically connected contact is moved from an " off " position into engagement with a fixed contact, and upon the return of the operating member, the moving contact is guided by two sliding surfaces along a different path into engagement with a second fixed contact. When an electromagnet 11, Fig. 2, is energized, a member 16 is attracted, rotating about an axis 4, and driving by means of a pin 19 plates 3, Fig. 4, one at each end of the switch. The plates 3 rotate about the pivot 4, and carry contact members 1 into engagement with the upper of fixed contacts 10. A plate 7 is also rotated about the pivot 4 by a link 5 which is carried by a spindle 2, supported between the plates 3, and has a pin 6 engaging with a slot 8 in the plate 7. A pin 15 on the plate 7 actuates the core 13 of a no-volt magnet 12 into its attracted position, where it is retained by the energization of the magnet 12. When the electromagnet 11 is de-energized, therefore, a spring 17 returns the member 16, and with it the plates 3, but the plate 7 is kept raised by the engagement of the pin 15 with a groove 14 in the core 13, so that the pin 6 travels down the slot 8 and the contact 1 is moved into engagement with the lower of the fixed contacts 10. Three sets of contacts 1, 10 may be provided side by side for starting a three phase motor, the second movement of the moving contacts either putting a fuse into each phase or cutting out a step of resistance, or a portion of an auto-transformer winding.
Patent GB-153006-A (GB)
Title: Improvements in the treatment of gas liquor in order to extract a fertiliser therefrom
IPC: C05C3/00
Filed: 1920-10-25
Abstract: Gas liquor is freed from ammonium cyanide and sulphocyanide and rendered suitable for use as a fertilizer by adding yellow ammonium sulphide or sulphur or by treating it with air or other agent to liberate sulphur from the sulphur compounds and distilling the liquor.  The cyanide is transformed into sulphocyanide which remains in the retort.