baber/WOPTO huggingface dataset:
Patent GB-568400-A (GB)
Title: Improvements in or relating to electric signalling systems
IPC: G08C19/02
Filed: 1943-09-28
Abstract: 568,400. Telemetering systems. STANDARD TELEPHONES & CABLES, Ltd., and CHAMBERS, C. H. Sept. 28, 1943, No. 15893. [Class 40 (i)] In a telemetering system in which a follow-up member 2, 3 straddles the pointer 1, contact between the two members varies the charge on a large-capacity condenser C1 which controls the grid potential of a thermionic valve V1 and the anode current of the latter flows in series through a milliammeter M1 actuating the follow-up member and a distant milliammeter M2. A recording instrument M3 may also be included in the circuit. The condenser C1 is connected between the grid and the junction point of two resistances R4, R5 which are connected between the cathode and the negative terminal of the supply, and alternative circuits for charging the condenser in opposite directions are made through adjustable high resistances R1, R2 when the pointer 1 engages the arms 2, 3 of the follow-up member. Instead of the members making contact, an optical method may be employed for detecting the relative positions of the pointer and follow-up member.
Patent GB-834420-A (GB)
Title: High frequency transistor
IPC: H01L29/00
Filed: 1956-05-23
Abstract: 834,420. Transistors. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 23, 1956 [May 25, 1955], No. 15905/56. Class 37. A transistor comprises an emitter zone 2 of one conductivity type extending over one face of the base zone 1 of opposite type, an ohmic base connection 6 comprising an aperture through which an electroformed point contact 5 collector contacts the base zone. The diameter of the aperture is less than 5 times the diffusion length and the arrangement is such that when the emitter is forward biased, majority carriers are released from the collector to form a space charge which tends to limit minority carrier injection to a selected portion of the emitter and to accelerate and direct minority carriers to the collector. This positive feedback effect occurs when the emitter-collector current exceeds a certain value. A relaxation oscillator is described (Fig. 6) in which the frequency is determined by the time constant circuit 21, 20 in the emitter lead; 21 represents the stray capacities. Specification 814,896 is referred to.
Patent GB-1496394-A (GB)
Title: Non-warping heat shield
IPC: C21D9/663
Filed: 1975-04-17
Abstract: 1496394 Heat shield assembly JONES & LAUGHLIN STEEL CORP 17 April 1975 [18 April 1974] 15940/75 Heading F4B A heat shield assembly for use during heattreatment of coils 9 comprises two circular plates 1 and 2 with central openings and multiple radial slots 10. The plates are loosely fastened by a U-shaped channel 4 and bolts 5 and insulating material 3 and spacers 11 are interposed between them. The spacers are attached to one plate only for sliding contact with the other plate during thermal expansion. A ring member 6 may be placed between plates 1 and 2 to prevent loss of insulating material and a centring means 7 may be provided to position the heat shield relative to the coils 9.
Patent GB-230334-A (GB)
Title: Improvements relating to back pedalling brakes for bicycles and motor cycles
IPC: B62L5/00
Filed: 1924-07-02
Abstract: 230,334. Olsen, F. J. July 2, 1924. Back-pedalling brake arrangements.-A split brake sleeve e, which is expandable by axial movement of a wedging member f, is mounted on a tubular member l which has a clutch at each end. A slot s in the member l accommodates the member f which is moved by a screw thread g or cams operated by a sprocket c. Teeth h on the edges of the sleeve e and the member f cause the sleeve to be expanded when relative movement takes place in either direction. The sleeve e and the member l are secured together near one edge of the sleeve by pins k which are a loose fit in holes in the sleeve, fianges being provided at each end of the member e. Forward rotation of the sprocket c causes the members e, f, l to move together to the right until the clutch cone n engages the hub and then further motion of the member f causes the sleeve e to be expanded. When the sprocket is held stationary a spring p causes the members e, f, l to move to the left and clutch members m, q to engage; reverse rotation of the sprocket c then causes the brake-sleeve e to be expanded. Specification 136,541 is referred to.
Patent GB-991565-A (GB)
Title: Improvements relating to apparatus for cooling a continuously moving strip
IPC: C21D1/62
Filed: 1962-04-26
Abstract: <PICT:0991565/C6-C7/1> Apparatus for cooling a continuously moving strip, particularly of ferrous metal sheet S from 800-1100  DEG F. to 200-500  DEG F., comprises a chamber 11 (shown divided into three cooling units) having an inlet port 12 and an outlet port 16, rollers for conveying the strip between the ports in a plurality of vertical passes, a plurality of water cooled cooling elements each located intermediate two adjacent passes to receive thermal radiation from the two adjacent passes and a plurality of fans for recirculating atmosphere between the passes and cooling elements.  In detail, each cooling unit comprises three upper rollers 57-59 and four lower rollers 53-56 for passing strip to and fro in six vertical strands 24-29, seven cooling elements 33-39 each comprising water inlet and outlet manifolds 42, 43 and a plurality of water tubes 41 extending therebetween (see Fig. 2, not shown), an axial flow fan 19 above the second upper roller 58 to draw a main atmosphere stream up past the cooling elements 35-37 and return it toward the bottom of the unit in two partial streams past elements 33-35 and 37-39 respectively, a plenum chamber 30 communicating with the fan 19 and having skirt portions 31, 32 in contact with the top of elements 35, 37 and baffle plates intermediate the water tubes of these elements (not shown) to prevent the partial streams from short-circuiting into the main stream.
Patent GB-1455664-A (GB)
Title: Fluid metering displacement device method and system
IPC: B01L99/00
Filed: 1974-04-10
Abstract: 1455664 Pipettes COULTER ELECTRONICS Inc 10 April 1974 [16 April 1973 18 April 1973] 16007/74 Heading B1X [Also in Divisions F1 and G1] Fixed volumes of liquid are drawn up into a cuvette 110 for analysis by means of a constant volume fluid displacement device 10, the device having a non-elastic diaphragm 16 clamped between two similar opposed concave surfaces 30, 32 for movement between and against the surfaces. A sample of liquid is drawn up into the cuvette by the application of a vacuum via a valve 154 to one side of the diphragm, and the sample is subsequently forced out of the cuvette by the application of pressure to the same side of the diaphragm via the valve. The forcing out of the sample may be assisted by pressurised air applied via a valve 164, this air serving also to purge the cuvette. The volume of the sample may either be defined by the whole volume of the space enclosed by the two concave surfaces, or by half that space. In the latter case the normal starting position of the diaphragm is midway between the concave surfaces, this method enabling an equal volume of air to be forced out from the cuvette following the forcing out of the sample.
Patent GB-128094-A (GB)
Title: Improvements relating to Filters.
Inventor: EVANS WILLIAM EDWARD
IPC: B01D39/06
Filed: 1918-10-02
Abstract: 128,094. Evans, W. E., (Lourtie, M.). Oct. 2, 1918. Filtering media. - Aluminium filings or chips free from powder are used as a filtering medium in pocket or like filters for drinking-water.
Patent GB-1091276-A (GB)
Title: Improvements in alloy articles and the method of making
IPC: C22C38/18
Filed: 1966-04-12
Abstract: An alloy comprising <TABS:1091276/C6-C7/1> the balance apart from impurities being iron is forged and case carburized at 1500 DEG F. This results in a case 0.01 - 0.2 inches thick and containing at least 0.8% of carbon.
Patent GB-459714-A (GB)
Title: Improvements in cinematographic apparatus combined with apparatus for recording sound and physiological phenomena
IPC: G11B7/00
Filed: 1935-06-04
Abstract: 459,714. Oscillographs. KOLB, O. K., 39, Beverley Court, Chiswick, London. June 4, 1935. No. 16148. [Class 37] [See also Groups XXXVIII and VI] A combined kinematograph and sound-recording apparatus is adapted to be used not only for ordinary purposes but also for recording physiological phenomena, such as pulse rate and amplitude, electrocardiac wave trains, and stethoscopic sounds, together if desired, with kinematographic pictures of a patient. With this object, according to the invention the optical sound recording part of the apparatus comprises a primary mask 20 having two apertures 21, 21A. the mask being movable so that either of the apertures, as required, may be imaged on a slit 61 in a fixed mask 60 by means of an oscillograph mirror 52. When the aperture 21 is operative, a variable width sound record 15 is produced on the film 10 ; with the slit 21A in position, a linear special record of the kind shown in Fig. 3 may be produced. Alternatively, two separate interchangeable masks, one being provided with the aperture 21 and the other with the slit 21A may be used.
Patent GB-552780-A (GB)
Title: Improvements in or relating to devices for adjusting the opening of windscreens or the like
IPC: E05C17/16
Filed: 1941-12-15
Abstract: 552,780. Stays for windscreens &c. MOYDON, Ltd., and COMPTON, A. J. Dec. 15, 1941, No. 16148. [Class 65 (i)] In a stay 3 for a windscreen &c. 2. the wing nut &c. 6 which fixes the stay in various positions, serves also to lock the screen against movement in the closed position, as by engaging a slotted plate 1 carried by the screen. A shouldered washer may be arranged between the nut 6 and the slot 9 in plate 1.
Patent GB-1028227-A (GB)
Title: Improvements in or relating to the production of vitamin a
Filed: 1963-04-24
Abstract: Vitamin A is obtained by subjecting vitamin A acid ester of vitamin A (described in Specification 1,028,226) to reduction.  In examples vitamin A acid ester of vitamin A is reduced in solvents with lithium aluminium hydride, with di-isobutyl aluminium hydride and with sodium borohydride.  Other reducing agents mentioned are sodium aluminium hydride and potassium borohydride.
Patent GB-723934-A (GB)
Title: Method and apparatus for making manifold forms
IPC: B41L1/00
Filed: 1952-06-27
Abstract: 723,934. Perforating and severing webs. FULK, J. B., and ROSS, F. A. June 27, 1952, No. 16213/52. Classes 31 (1) and 31 (2). [Also in Group XV] Apparatus for making manifold form wherein a plurality of transfer strips 6, Fig. 18, are interleaved with a plurality of record strips 10 and wherein each record strip is provided with a strip 145 containing a row of pre-punched holes 11 extending along one or both edges thereof to enable the strips to be guided and fed, comprises an endless belt or belts 16 provided with projections which are adapted to enter the holes 11, means being provided for moving the belt intermittently and means also being provided for punching apertures 30, 31, Fig. 14, making cross perforations 32, and for inserting staples 33, 34 in the strips while they are stationary, after which operations, the strip or strips 145 are severed. Work-feeding.-The belt or belts 16 pass over wheels 20, 21, the wheel 20 being mounted on a shaft 46 which is rotated intermittently by means of a rack-and-pinion 48, 50 and pawl and ratchet mechanism 53, 54. The rack is reciprocated by means of a crank 61 fixed to a shaft 62 driven from a motor 76 and the throw of the crank-pin 66 is adjustable radially so that the distance between the cross perforations 32 can be varied in accordance with the length of form desired. The shaft 46 is held stationary between intermittent feed movements by means of a braking device, Fig. 6 (not shown). The strips are fed to the belt or belts 16 in assembled form from a collating machine 15 such as described in U.S.A. Specification 2,100,776 and from which extends a shaft 105 driven from the motor 76. Punching.-The holes 30, 31 are punched in the strips by means of a punching head 25 which carries a plurality of punches (103, Fig. 17 (not shown)) and is reciprocated vertically by means. of a pair of eccentrics 97 mounted on a shaft 96 which is rotated by means of gearing from the shaft 62. Cross-perforating.-The strips are provided with the cross perforations 32 by means of a blade (91, Fig. 10 (not shown)) carried by a head 26 which is reciprocated vertically by means of eccentrics 82, 83 carried by a shaft 80 which is rotated by means of gearing from the shaft 62. Severing.-The strip or strips 145, Fig. 14, containing the holes 11 are each severed at the completion of the punching, cross-perforating and stapling operations by means of cutter wheels 135, 136 driven by a motor 137. Shearing.-The forms may be cut into desired lengths by means of a shear blade 151 which is actuated by eccentrics 152 mounted on a shaft 153 which is driven from the shaft 62 by means of a chain 154 and sprocket-wheels.
Patent GB-637317-A (GB)
Title: Improvements relating to electrolytic apparatus
Filed: 1947-06-19
Abstract: An electrode for use in electrolytic apparatus employing an alkaline electrolyte contains 96.5 per cent magnesium, 2.5 per cent manganese, 0.4 per cent silicon and 0.2 per cent each of aluminium, copper and zinc.  Specifications 211,091, [Class 37], 538,616, [Group XXXVI], 571,271 and 637,318 are referred to.
Patent GB-114590-A (GB)
Title: Improvements in or relating to Machines adapted for Performing Operations upon Parts of Boots or Shoes.
IPC: A43D100/02
Filed: 1917-04-04
Abstract: 114,590. British United Shoe Machinery Co., (United Shoe Machinery Co.). April 4, 1917. Sewing - machines; driving; feed by awls. -In a machine for performing operations on parts of boots and shoes such as eyeletting machines or sewing machines the speed of the operating mechanism is varied in accordance with the spacing so that the parts shall not move too rapidly with a wide spacing nor alternatively too slowly with a close spacing, the spacing-mechanism being interlocked with the gear changing mechanism. The invention is described in connexion with an eyeleting machine the setting tools &c. of which operate in the manner described in Specification 114,472, [Class 43, Fastenings, Dress]. The feeding of the work is performed by the oscillation cf a frame 32 carryis performed by the oscillation of a frame 32 carrying the upper setting tool 40, the frame having pivoted thereto a block slidable in the jaw of a forked lever 82 journaled on a stationary shaft 86 and connected to a sleeve 88 having integral therewith an arm 90 connected to a link 92 pivoted in turn to a link 94. The link 94 is pivoted to a yoke frame 98 guided for horizontal movement and oscillated by a cam 100 on the driving shaft 4 rotating between its jaws. The pivot point of the links 92, 94 is guided by radius-links 96 pivoted on a pin 104 set in a plate 106 which is rotatable by means of a spacing handle 109 about a pivot 108. The handle.swings over a graduated plate and is held initially against one of two stops by a spring 112. To increase the feed the lever handle 109 is moved forward into the dotted position shown in Fig. 5, the angular movement of the sleeve 88 being thereby increased from the angle A to the angle B. [n order to vary the speed of the machine the shaft 4 is driven by belting from a pulley 142 mounted on a shaft 140 which carries pulleys 144, 146 driven at different speeds. Either of these pulleys may be clutched to the shaft by means of a sliding member 148 moved bv a handle 150. In order to interlock the speed-changing and spacing mechanisms so that the one cannot be moved without shifting the other correspondingly a rod 154 is provided which engages a cam 152 on the handle 150 and a tooth on the plate 106. In the application of the invention to a sewing-machine such as is described in Specification 23478/10, the feed adjustment of a work-feeding awl is interconnected with a twospeed drive in the manner described.
Patent GB-786795-A (GB)
Title: Improvements in or relating to devices for igniting and stabilizing welding arcs
IPC: B23K9/067
Filed: 1955-06-07
Abstract: 786,795. Supply systems for welding arcs. SOC. L'AIR LIQUIDE, SOC. ANON. POUR L'ETUDE ET L'EXPLOITATION DES PROCEDES G. CLAUDE. June 7, 1955 [June 10, 1954], No. 16353/55. Class 38 (4). [Also in Group XL (a)] A high-frequency current generator of the spark-gap type, for initiating and stabilizing an A.C. welding arc, has its electrodes 1, 2 confined within an enclosure 3A, 3B in which flows a stream of inert gas, such as argon or helium, so as to sweep the active ends of the electrodes, the flow being through a bore 9 of electrode 1 and then through radial holes 13, 14 into a bore 12 of electrode 2 for discharge into a pipe leading to the welding tool for blanketing the arc. The electrodes are carried by supports 4, 5 provided with external coupling plugs 7, 8, electrode 2 screwing into support 5 and being locked in position by a nut 6, whilst electrode is slidable in support 4 and is further supported at its active end by a diaphragm 15 dividing the enclosure into compartments 16, 17 which communicate only through the bore 9 and a calibrated inlet 18 thereto in the electrode 1. In the absence of gas flow a spring 20 urges electrode 1 away from electrode 2 a distance sufficient to prevent spark-over. When gas flow is present, however, the pressure difference on the two sides of the diaphragm, due to the pressure drop caused by the restricted inlet 18, causes the diaphragm to move electrode 1 towards electrode 2 into the normal working position, viz. the edge of a cupped washer 26 attached to electrode 1 abuts a wall 27 of the enclosure. The gas enters compartment 16 through a hole 19 in support 4. The electrodes are preferably of aluminium. Specification 759,318 is referred to.
Patent GB-550303-A (GB)
Title: Improvements in or relating to float actuated means for the control of liquid levels
IPC: F16K31/18
Filed: 1941-12-22
Abstract: 550,303. Actuation of switches. NEILSON, D. H., MATHIESON, R., and DAVY & UNITED ENGINEERING CO., Ltd. Dec. 22, 1941, No. 16499. [Class 38 (v)] [Also in Group XVIII] Liquid level is controlled by a "float" device depending upon the relative losses of weight due to immersion in liquid of two bodies made from materials of different specific gravity and the relative gains in weight when unsubmerged. A float chamber a is connected at b and c with the top and bottom of a reservoir the supply to which is to be controlled. A lever d pivoted at f carries two weights g, h of different sizes and specific gravities. One weight h carries a soft iron j in a non-magnetic tube k surrounded by a coil m adapted to produce a magnetic circuit through a pole piece p, variable air gap r, and pivoted armature s. When the chamber a is empty the weight h falls, the magnetic flux is at a minimum, and the armature s opens the contacts t whereby a valve or pump is controlled to supply liquid to the reservoir. When the chamber a is filled, the loss of weight of the body h is greater than that of g (they may be of aluminium and lead respectively), the body h rises and the switch closes to stop the supply of liquid. Alternatively, the lever d may act directly on a switch, change an inductance or magnetic field, actuate electro-optical means, or move a permanent magnet controlling the contacts.
Patent GB-413483-A (GB)
Title: Improvements in and relating to musical keyboard systems
IPC: G10B1/04
Filed: 1933-06-08
Abstract: 413,483. Music, keyboards, &c. LUEDTKE, H., 21, Germaniagarten, Tempelhof, Berlin. June 8, 1933, No. 16502. Convention date, June 8, 1932. [Class 88 (ii).] A keyboard for musical purposes comprises hexagonal keys 1, arranged in immediate juxtaposition to form a continuous honeycomblike field arranged in a vertical, horizontal, or inclined plane. The keyboard may be used for playing purposes in pianos and organs; as an organ stop-register ; or for obtaining a photographic record of notes struck, depression of the keys affecting a source of light through appropriate resistances. The keys operate by direct movement, against springs 3, on electrical switches 2, and for a playing-field they may be grouped in octaves of twelve semitones, eighteen major-thirds, or of twenty-four quarter-tones. As shown in Fig. 2, certain notes occur more than once in an octave-group. The blank keys in Fig. 2 operate master-switches functioning as stops. Master-switches may be provided for changing over from one tone-system to another or for changing from a sixteen, to an eight or four feet organ tone. The key-head has a finger-recess 5 and slopes downwards in all directions from the edge of the recess, to an extent substantially equal to the distance a key is depressed.
Patent GB-1450888-A (GB)
Title: Shaving head for a dry-shaving apparatus
IPC: B26B19/04
Filed: 1975-04-22
Abstract: 1450888 Dry shavers PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 22 April 1975 [25 April 1974] 16555/75 Heading B4B A shaving head 2 for a dry shaver comprises a cap 4 having a foil 5 against which a cutter 9 is urged by a spring 11, the spring acting between the cutter and a supporting frame 20 which is pivotably mounted on the cap by means of arms 21 such that when the cutter is in an operative position as shown in Fig. 2, a component of the force of the spring urges projections 22 on the frame into engagement with recesses in the cap to thereby retain the cutter in its operative position. The arms 21 are provided on a wire member 24 having a portion 25 retained by lugs 26, 27 and providing a pivot axis.
Patent GB-1372889-A (GB)
Title: Liquid detergent compositions
IPC: C11D17/00
Filed: 1971-10-29
Abstract: The invention relates to novel liquid detergent compositions consisting essentially of N(2-hydroxy C10-C18 alkyl) derivatives of N-methyl taurine or sarcosine or diethanolamine in combination with an anionic sulfate, zwittenonic, or amphoteric detergent in an aqueous medium. The addition of the N(2-hydroxy C10-C18 alkyl) derivatives results in substantially increased foam-drainage times and better foaming properties.
Patent GB-202784-A (GB)
Title: Improvements in electrical signalling methods
IPC: H04L25/03
Filed: 1922-06-15
Abstract: 202,784. Pernot, F. E. June 15, 1922. Filter, rejector, and separator circuits.-In a duplex bridge telegraph system, Fig. 13, working with both direct and alternating currents, the armature 1 of the transmitting direct current generator is connected to the apex of the bridge through circuits K<11>, L<11> and K<1>, L<1> which may each contain capacity and inductance in parallel or lumped impedance of any suitable type. Between the connection to the apex and the earth connection are inductance L and capacity K in series to suppress current characteristics in the generator 1 which may detrimentally affect the devices R, R<1> for receiving alternating current signals.
Patent GB-229180-A (GB)
Title: Improvements in and relating to kinematograph film and like spool storage cabinets
IPC: G03B21/32
Filed: 1924-07-10
Abstract: 229,180. Rigby, Ltd., R., and Goward, W. July 10, 1924. Contents, delivering.-A compartmental cabinet for film spools &c. is provided with ejecting devices, one for each compartment, comprising independent two-armed levers 6, 7 pivoted each to a division wall. To remove a spool the end 8 of a limb 7 is depressed whereupon the portion 3 causes the spool to roll forward. Each compartment door is spring mounted and is prevented from closing by the end 8 when the limb 7 is fully depressed.