baber/WOPTO huggingface dataset:
Patent GB-577730-A (GB)
Title: Improvements in and relating to electric motors
IPC: H02K23/06
Filed: 1944-08-14
Abstract: 577,730. Control of D.C. motors; reversing. BRITISH THOMSON-HOUSTON CO., Ltd., and GRAHAM, D. H. Aug. 14, 1944, No. 15489. [Class 38 (iii)] The circuit of the armature 1 of a reversible motor having oppositely wound shunt field coils 2 and 3 is closed by switch 8 operated by coil 7 connected in series with field coil 2 or 3 (according to the required direction of rotation) by two-way switch 4. A brake coil 11 may be connected across the armature 1 or in series with coil 7. The motor may operate a door, flap, or aeroplane undercarriage which, at each end of travel, stops the motor by opening limit switch 5 or 6.
Patent GB-759364-A (GB)
Title: Improvements in or relating to surface grip or strake devices for vehicle wheels
Inventor: BRAUNE RUDI HELMUT
IPC: B60C27/10
Filed: 1953-06-04
Abstract: 759,364. Wheel tyres. SHAY, Ltd., J. E. May 28, 1954 [June 4, 1953], No. 15493/53. Class 144 (2). A detachable surface grip or stroke device for pneumatic or other resilient tyres comprises a series of grip members each comprising a cleat or tread part 2 arranged to be disposed transversely or obliquely across the face or tread of a tyre and a pair of side arms 3, 4 located approximately radially on opposite sides of the tyre with their outer ends welded or riveted to the respective ends of the cleat 2, successive arms 3 or 4 around the respective sides of the wheel being connected by pivoted links 5, the two opposite ends of the assembly being connected together by releasable fastening means. The arrangement is such that when the device is secured around a tyred wheel displacement of any of the grip members due, for example, to flexing of the tyre as the wheel rotates, produces a selftightening effect causing other of said members to be pressed into gripping relation with the tyre. In the example the cleats 2 are formed of angle iron, and the arms 3, 4 of mild steel strip. The links 5 between successive arms 3 or 4 are connected between a pivot 7 at the lower end of one arm and a pivot 8 at about a third of the way up the next adjacent arm. The securing means between the two ends of the device comprises three links 5a-5c, the link 5a being pivoted similarly to the other links 5 and carrying a bracket 9 secured near to the pivot 7 by a rivet or bolt 11, the other end of the bracket being bent into a loop 10 to receive the free end of a link 5b which is pivoted at the extremity of the end arm 4. The link 5c mounted on a pivot 8 on the arm 4 at the other end of the device, is provided with a series of holes 12 one of which is engaged with a pin 13 on the link 5b. One or both arms 3, 4 of the grip members may be provided with a radial projection or stroke. In a modification, Fig: 4 (not shown), the interlinked arms are provided at one side only of the wheel, and the transverse cleats secured thereto are shaped to hook over part of the wall of the opposite side of the tyre.
Patent GB-517417-A (GB)
Title: Blasting cartridges
IPC: F42B3/06
Filed: 1938-05-24
Abstract: 517,417. Blasting cartridges. IGNATIEFF, A., and CARDOX (Great Britain), Ltd. May 24, 1938, No. 15527. [Class 9 (i)] Relates to carbon-dioxide and like cartridges. The cartridge body 1 which is filled with the gas under pressure through a filling valve 17 has a necked end 2 within which is located, without positive connection, the plugged end 25 of a container 7 for a heating charge 8. Grooves 10, or holes, through the thickened annulus. 2 permit the gas charge to pass into the body of the cartridge. The heating charge is electrically ignited by the means described in Specification 387,068. In a modification, the annulus 2 has a plain bore within which the container end 25 fits with a substantial clearance for the passage of the gas charge. An L-section ferrule is fitted to the container 7 and the flange thereof is formed with ports through which the gas charge passes and is clamped between the cartridge head 4 and the rear face 3 of the annulus 2. The cartridge is anchored in the bore-hole at the instant of discharge by pivoted claws 28 which are forced outwards by the expanding gas, in the manner described in Specification 417,043.
Patent GB-712607-A (GB)
Title: Improvements in machines for setting the teeth of saws
IPC: B23D63/04
Filed: 1950-06-22
Abstract: 712,607. Saw setting machines. HOUGHTON, J. E. June 22, 1951 [June 22, 1950], No. 15568/50. Class 145 (2) A saw-setting machine is of the type comprising an anvil, means for intermittently moving the saw blade over the anvil, a pivotally mounted hammer and means for oscillating the hammer to strike the anvil at intervals when the saw is stationary. The head of the hammer is on a pivotally mounted arm which is oscillated by a member mounted on a rotary shaft, which member lifts the hammer and allows it to drop, each revolution of the shaft. A cam 13 operates the hammer 11 through the pivoted arm 12. The saw blade is held in the holder 16 which can be adjusted to allow for varying widths of saw blades and it is supported on the anvil 7. The saw is fed forward the correct amount each revolution of the cam 13 by a disc 3, as described in Specification 712,629, [Group XXIV], alternatively, a pawl or other means may be used to feed the saw.
Patent GB-1187579-A (GB)
Title: Improvements in Electronic Organs
IPC: G10H1/18
Filed: 1969-03-25
Abstract: 1,187,579. Electrophonic musical instruments. WURLITZER CO. 25 March, 1969 [24 April, 1968], No. 15584/69. Heading G5J. An electronic organ comprises a number of tone generators 32 producing oscillations -of predominantly one polarity, and a number of keys each operating a key switch 34, said switches being connected to an output circuit which includes at least one capacitor connected so as to be charged with the one polarity upon closure of one -of the key switches -and a biasing potential source of the one polarity e.g. + 0À85V over line 118 connected to the output circuit to maintain the capacitor at least partially charged with the one polarity when all the key switches are open. Square waves are used varying between zero and a positive value (Fig. 6, not shown) and the biasing potential, approximately equal to the average potential of the square wave, is connected to the collector viz. bus-bars 46, of the switches thus reducing the "key-plop" caused by the closing of a key switch, the "key-plop" is further reduced by incorporating the capacitor in a low frequency roll-off filter (Fig. 7, not shown). If a square wave were used that varied between two fixed D.C. voltages other than zero, the biasing potential applied to each bus-bar would be the average of these two voltages. An 8<SP>1</SP> flute stop is shown, each generator 32 being connected to a movable switch contact 44 which engages a busbar 46 upon depression of the corresponding key. Nine switch contacts 44 are engageable with the bus-bar 46-1 while eight switch contacts are engageable with each of the remaining five busbars. Each bar is connected to a different filter, and the outputs of these filters may be selectively combined, the combined outputs being connected to further filters. Substantially all the harmonics are filtered out by means of a high frequency roll-off filter (Fig. 8, not shown). Most of the "key-plop" is caused by the charging of primarily the capacitors 48, 50, 56 and possibly 60 and thus each bus-bar is supplied with a positive potential + 0À85V. A second output is taken from each bus-bar and combined with the output from a 4<SP>1</SP> flute stop to produce a sawtooth wave for subsequently producing reed, string and brass tones. A mixture amplifier and switching including four .generators 2 2/3<SP>1</SP>, 2<SP>1</SP>, 1 3/5<SP>1</SP> and 1<SP>1</SP> stops is also described (Fig. 4, not shown). The tone generators are connected in parallel to complex filters and to flute filters, and the respective filter outputs are selectively combined and connected to an amplifier (40, Fig. 5, not shown) connected to a power amplifier and loud speaker system.
Patent GB-1068504-A (GB)
Title: An exhaust silencer
Inventor: LOCKTON JOHN
IPC: F01N1/08
Filed: 1965-04-13
Abstract: 1,068,504. Exhaust silencers. SILENCERS (BOLTON) Ltd. March 1, 1966 [April 13, 1965], No. 15588/65. Heading F1B. An exhaust silencer comprises a nest of tubes 16, the tubes 16a Fig. 2 (not shown) being located between plates 17 having tube receiving apertures which are flanged at (17a) to grip the tubes. The silencer casing 10 is double-walled and has end members 11 formed by spaced plates 15.
Patent GB-561274-A (GB)
Title: Improvements in the construction of walls, partitions and buildings
IPC: E04C2/04
Filed: 1942-11-05
Abstract: 561,274. Walls. HEFFER, B. Nov. 5, 1942, No. 15610. [Classes 20 (iv) and 87 (i)] Concrete slabs a, a<1>, Fig. 3 are formed with beads b at the ends and with hook or L-shaped projections c which engage to tie the slabs together and space them apart when employed to form a hollow wall or partition. The end beads b engage in grooves aligned vertically but not transversely in concrete blocks h which are built up to form pillars or connecting members between panels. The slabs a a<1>, Fig. 2, forming a wall may be of differing depths, and a grooved jointing member k forming a picture rail may be provided. Recessed concrete floor slabs i have beads or fillets i<1> engaging in grooves in the wall-suppor-ting blocks g and intermediate bearing blocks j. Capping blocks l are formed with grooves to receive the slabs a, a<1>, and with recesses to support the edges of roofing slabs a<1>. Troughed cornice pieces m rest on the blocks l and are formed with grooves m<1> to receive the edge beads on' the slabs a, a<1>. A roof-supporting beam of blocks n with superposed blocks o, or a beam of equivalent section, provides grooves to receive the ends of the roof slabs.
Patent GB-866508-A (GB)
Title: Process for the manufacture of matt fibres of cellulose esters
IPC: D01F2/28
Filed: 1957-05-16
Abstract: Cellulose ester fibres having a matt appearance are made by finely dispersing less than 2% by weight (calculated on the cellulose ester) of one or more water-soluble precondensates of melamine and formaldehyde, e.g. di-, tri- and tetramethylol melamines, in a cellulose ester spinning composition, spinning the composition and subjecting the spun material to the action of hot air, hot water or steam until a matt effect is obtained.  The spinning composition, which may also contain a dyestuff, e.g. Indanthrene Brilliant Bordeaux RRL or Indanthrene Scarlet GL, may be wet- or dry-spun and the filaments produced may be treated with hot air, hot water or steam before or after severing into staple fibres.  Examples describe the spinning of secondary cellulose acetate, cellulose triacetate and cellulose acetobutyrate.
Patent GB-1185197-A (GB)
Title: Improvements in or relating to Transmssion Channels for Colour Television Signals
Inventor: BRUCH WALTER DR
IPC: E04C2/38
Filed: 1967-04-06
Abstract: 1,185,197. Colour television. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 6 April, 1967 [9 April, 1966; 14 Oct., 1966], No. 15764/67. Heading H4F. Line sequential signals, Fig. 2a, representing three colours or colour combinations which appear at terminal 8, Fig. 1, in a transmission channel, are applied through two one-lineduration delay lines 9, 10 and switches 13, 14, 15 to output terminals 16, 17, 18, the switches being advanced through one step in each line in response to a synchronizer 19 controlled by identifying signals included with the colour signals, whereby there are formed at terminals 17, 18, 19 simultaneous signal trains as shown in Fig. 2b-2d each representing a different colour or colour combination and comprised of a direct signal and the same signal delayed by one and two lines. The invention is of application where the total bandwidth of original simultaneous signals is redused by converting them to line sequential signals. Thus, in Fig. 1, original simultaneous signals at terminal 1, 2, 3, are converted by switch 4 to line sequential signals for application to a narrow band transmission channel, such as a magnetic tape recorder as illustrated at 7 or a cable. Identifying signals to mark the colour sequence are added from switch controller 6 via adder 5. The signals may be modulated on a carrier for transmission through the delay lines and subsequently demodulated, Fig. 6 (not shown). If the signals from a magnetic tape recorder are in the form of a frequency modulated carrier they may be applied directly to the delay lines. If the bandwidth of the delay line is less than that of the signals, the signal trains at terminals 16, 17, 18 are each formed of one full band width signal (the direct signal) and two reduced band width signals (the delayed signals). Preferably then the amplitude of the direct signal in the band not transmitted by the delay line is increased by three. Alternatively, an aperture correcter is included in the direct signal path. The sequence or phase of switches 13-15 may be changed for alternate fields or frames. Another embodiment of the invention, Figs. 3-5 (not shown), involves signals each comprised of a low frequency (0-600 KHZ) colour component and a high frequency (600 KHZ-2 MHZ) luminance component. The signals are converted to sequential form and recorded magnetically as in Fig. 1. Conversion back to simultaneous form differs from the Fig. 1 arrangement in that a splitting (filtering) circuit is provided before the delay lines, whereby only the colour components pass through the delay line which are of limited bandwidth. The separated luminance component (preferably with a delay of one line) is then recombined with the colour signals at the outputs of the delay lines.
Patent GB-1498986-A (GB)
Title: Force-measuring apparatus
IPC: G01L1/04
Filed: 1976-03-24
Abstract: 1498986 Force measuring apparatus W & T AVERY Ltd 24 March 1976 [17 April 1975] 15832/75 Heading G1W A force measuring apparatus comprises a fixed support and a force receiver coupled to the fixed support by means comprising a set of flexure strips rigidly united at both end portions, one end portion being connected to the fixed support and the other end portion to the force receiver, characterized in that the strips converge from the one end portion to the other end portion and in that the force receiver includes a lever coupled to the other end portion and extending towards the one end  portion. In Figs.2a, 2b, the platform 19 of a weighing scale is supported by two parallel sets of flexure strips each comprising an upper strip 10 and a lower strip 11, the strips being coupled together via a spacer 17 and connected to a fixed support 12 at one end and being coupled together either face to face or via a spacer arid connected to a member 13 at the other end. Member 13 is connected to a pair of levers 14 upon which the platform 19 rests via knife edges and the platform is guided by a link 21. In the weighing scale of Figs.3a and 3b, each set of flexure strips consists of a series of laterally spaced strips 10, 11 formedby cutting parallel slots in a plate from one edge thereof to adjacent the opposite edge, the free ends of the strips being attached alternately to the top and bottom of a spacer 17 fixed to fixed support 12. The opposite edge of the plate is connected via member 13 to a pair of levers 14, and a frame 38 supporting a platform 32 via posts 40 is suspended from levers 14 via flexible member 42. The weight may be measured by measuring the movement of the force receiver directly, or by measuring the deflections of the strips either capacitatively, or by means of strain gauges. In Figs.2a, 2b, strain gauges 1-4 are provided on the undersides of the upper strips 10 and connected in a bridge circuit Fig.2c (not shown). Alternatively each upper flexure strip 10 may be provided with two strain gauges on each face connected into a bridge circuit, the outputs of the two bridge circuits being  combined.
Patent GB-851891-A (GB)
Title: Improvements in or relating to heat pumps
IPC: F25B29/00
Filed: 1955-07-14
Abstract: 851,891. Refrigerating, heat pumps. MILLER, A. S. Oct. 15, 1956 [July 14, 1955; Oct. 26, 1955], Nos. 15862/55 and 30643/55. Class 29 The invention relates to a heat pump including a compressor 1, a condenser 2 immersed in a water tank, and two evaporators, one being a heat pick-up coil, the other a refrigerator evaporator controlled by an independent refrigerant flow control valve. As shown in Fig. 1 (Application 15862/55), the refrigerant circuit includes pressure switches 3, 4, an expansion valve 6, a preset throttle 11 and valves 9, 10. After passing through the loop 12 refrigerant returns to the compressor through service valve 13. Pressure switch 3 controls valve 9 associated with the air cooling evaporator 8, while valve 10 is controlled by a refrigerator thermostat. On both valves 9 and 10 being closed, the compressor and fan motors are switched off. Pressure switch 4 is a safety switch. In an alternative circuit, Fig. 1 (Application 30643/55), the refrigerator evaporator and an associated low pressure expansion valve 21 are arranged in parallel with the main expansion valve 6 and a solenoid valve 20. When the refrigerator temperature is at the desired level a thermostat opens solenoid 20 allowing a high pressure flow of refrigerant through the expansion valve 6 to the air-cooling evaporator 8. On a rise in refrigerator temperature the solenoid 20 is closed stopping circulation of refrigerant until the pressure is low enough to open the expansion valve 21. A thermostat in the water tank may control a switch so that when the water is above a predetermined temperature the compressor and fan motors are controlled by the refrigerator thermostat. Both compressor and condenser may be immersed in water and the heat pick-up coil may be an air or ground coil.
Patent GB-376905-A (GB)
Title: Improvements in or relating to friction brakes or the like
IPC: F16D65/14
Filed: 1931-05-30
Abstract: 376,905. Brakes. PUGH, J. V., Meriden House, Meriden, Warwickshire. May 30, 1931, No. 15902. [Class 103 (i).] Expanding means for a brake band which prevent any tendency to seize up comprise levers 27, 28, Fig. 4, of different orders connected together or a double-acting lever 76, Fig. 14, connected to the ends of the band adapted to give simultaneous movement to the ends of the band through different distances. The ends of the band are engaged by the ends of the levers 27, 28 which are pivoted at 8, 9 and connected by a link 18. The lever 27 has a curved surface 29 having a rolling contact with the end of the band and the lever 28 has a projection 30 having a line contact. In one modification the band is shown supported on slotted lugs on the back-plate and operated by a pivoted fluid pressure cylinder, the piston of which is connected to the end 22 of the lever 27 or, as shown in Fig. 4, the levers may be operated by a lever 35 mounted on the pivot 9 and the band may be supported on circumferentially arranged links 62 each consisting of three links mounted on bifurcated lugs 61 on the band by means of rivets 64 having sufficient clearance to allow the band braking movement. The links are maintained in position by friction members 68 on a pin 66 extending through elongated openings 65 in the links until moved on wear of the band occurring. The links vary in size to allow an unequal movement of the band throughout its length. In order to maintain a constant position of the brake pedal after an adjustment of the band for wear a one-way clutch connection is arranged between the levers 35, 28 and comprises rollers contained in the enlarged end of the lever 35 and engaging, separated cam surfaces on a sleeve fixed on the shaft 37 on which the lever 28 is secured. A brake return spring 60<1> is secured to lugs 60 on the end of the band. A modified form of clutch comprises spring pawls on the shaft 35 arranged in five groups of three engaging ratchet teeth in the hollow boss of the lever 35 and arranged in sixteen groups of three, thus giving eighty different positions. In a modification the levers 27, 28 are shown arranged parallel to the axis of the brake drum and connected to the ends of the band by links, one link being spring pressed into engagement with a spherical abutment on one of the levers to accommodate the relative movements of the lever and band. The lever 76, Fig. 14, is connected to the ends of the band by links 80, 83, the link 80 being spring pressed into engagement with a spherical abutment at 84 on the lever 76.
Patent GB-280817-A (GB)
Title: A new or improved atomiser for spraying liquids in the air
IPC: F24F6/12
Filed: 1927-06-15
Abstract: 280,817. Ames, R. June 15, 1927. Nozzles for producing whirling sprays.-The nozzle consists of a cylinder made in two portions 2, 8, the inlet portion 2 having a bridge-piece 4 to which is secured a plug 6, the outlet portion 8 having a domed end. The plug has a helical groove 11 and is spaced from the orifice 10.
Patent GB-204092-A (GB)
Title: Improvements in or relating to apparatus for projecting advertisements on to a screen
IPC: G03B23/10
Filed: 1923-01-29
Abstract: 204,092. Crawford, J. E. R., and Lawson, E. Jan. 29, 1923. Elements moving always in one plane, rotating; optical-projection apparatus, applications of. - Optical projection apparatus for advertising purposes comprises a slide carrier in the form of a disc a which is rotated intermittently by a motor p through a worm and worm-wheel n, m respectively, a mutilated toothed wheel j, a pinion h and worm on the shaft of the pinion h, and a worm-wheel e secured to the shaft carrying the disc a.
Patent GB-1247627-A (GB)
Title: Apparatus for use in the manufacture of electrical assemblies
Inventor: BURA ERNST
IPC: H05K13/04
Filed: 1970-04-03
Abstract: 1,247,627. Assembling electrical components on circuit boards. FERNSEH G.m.b.H. 3 April, 1970 [3 April, 1969], No. 16003/70. Heading B3A. Apparatus for holding electrical components relative to a conductor plate comprises, a frame 1 for supporting the conductor plate, a cover 2 and an inflatable enclosure on the inside of the cover. The arrangement is such that components of various heights located on the conductor plate are held on the latter when the cover 2 is closed and the enclosure inflated. The frame 1 is adjustable in size and a layer of foam material 4 is located on the inflatable enclosure. The components are fitted on the conductor plate, which is then located on the frame 1. The cover 2 is closed and locked. The enclosure is inflated by a pump 8, whereupon the frame 1 and cover 2 are swung upwardly relative to the base of the apparatus to expose the underside of the conductor plate and the projecting ends of the component wires. The wires are then shortened and bent as required prior to dip soldering.
Patent GB-1479226-A (GB)
Title: Blood filter unit
IPC: B01D29/21
Filed: 1975-04-18
Abstract: 1479226 Blood filter JOHNSON & JOHNSON and PUROLATOR INC 18 April 1975 [19 April 1974] 16090/75 Heading BID A blood filtering unit comprises an assembly for supporting a filter cartridge, a filter cartridge and a housing for said assembly and cartridge. Filter cartridge 12 is supported by permeable core 11 and is hot melt adhesively secured to top plate 18 and screwed bottom member 20. Blood enters at 26 and passes inwardly through filter cartridge 12, which may be pleated, and exits at 22, air is vented at 27. The casing may be opaque or transparent, e.g. of polyolefins such as polypropylene, polyethylene, butadiene/styrene polymers or polycarbonates. The cartridge may be of synthetic fibre felts or synthetic foam or woven polyester or nylon. The cartridge may be frusto conical with more widely spaced pleats at the bottom than the top.