baber/WOPTO huggingface dataset:
Patent GB-258651-A (GB)
Title: Improvements in or relating to pattern cutting machines
IPC: A43D27/00
Filed: 1925-06-23
Abstract: 258,651. British United Shoe Machinery Co., Ltd., (Deutsche Vereinigte Schuhmaschinen Ges.). June 23, 1925. Pantographic apparatus.-In a pattern grading and cutting machine with workpiece holder 24, 28 and template holder 23, 26, template guide 7 and cutting device 4, 5, the holder being movable bodily relatively to the device in a plane to enable the contour of the template to be reproduced on the workpiece by the cutting-device, and the holder, guide, and cutting device being interconnected by a pantograph of known type, (a) the work and template holders are mounted on a ball-bearing 11 supported on a wheeled carriage 12 moving on rails 14 carried by a bracket 15 hinged on pins 18, 19, (b) the template is clamped by a cam 27 and the workpiece by a cam-actuated pivoted lever, and (c) the cutters 4, 5 are adjusted relatively to the frame by two screws 35. The cutting-device comprises shear-blades or a cam-reciprocated punch 5 co-operating with a stationary die 4. Specifications 13302/10, 207,548, and 233,710 are referred to.
Patent GB-1060780-A (GB)
Title: Improvements in or relating to the manufacture of goggles,eye shields and the like
IPC: A61F9/06
Filed: 1964-04-20
Abstract: Goggles, eye shields and the like are made from a transparent homogeneous sheet material comprising an artificial plastics material, e.g. cellulose acetate, especially cellulose acetate, having an acetic acid content of about 52 to 55% having incorporated therein a transparent absorber of ultra-violet radiation, and thermal black as an infra-red radiation absorber. The proportion of thermal black is suitably about 0.5%. Plasticizers and dyestuffs may also be present.  The ultra-violet absorber may comprise a major proportion of acetophenone. Specified plasticizers include dimethyl phthalate, triphenyl phosphate and trichloroethyl phosphate and a specified dyestuff is filter cyan. The constituents may be mixed together in the presence of a solvent, e.g. acetone or an ethanolbenzene mixture, rolled and formed into sheets, which are welded together to form a block, from which sheet sections of the required thicknesses are cut.
Patent GB-698398-A (GB)
Title: Improvements in or relating to radio receivers
Inventor: WETHEY EUGENE PETER
IPC: H02M1/10
Filed: 1952-06-27
Abstract: 698,398. Valve circuits for radio reception. KOLSTER-BRANDES, Ltd. June 27, 1952, No. 16259/52. Class 40 (vi). In a radio receiver for alternative operation on two supply voltages which are in the approximate relationship 2: 1, the valve heaters H are connected in series with one another and with a resistor RT having a negative temperature coefficient, while dial lamps L are connected in series with one another and with a voltagedropping resistor R. A switch S enables the two series-connected chains to be connected in parallel for operation on the lower supply voltage or in series for operation on the higher voltage.
Patent GB-771303-A (GB)
Title: Improvements in and relating to bearings
IPC: G01C19/16
Filed: 1955-06-08
Abstract: 771,303. Ball-bearings. NOJIMA, T. June 8, 1955, No. 16422/55. Class 12 (1). A shaft 8 is mounted in a bearing comprising a plurality of bearing elements 5 of segmental shape each of which is provided with a cylindrical recess 7 containing a circular row of balls 3 supporting a large ball 1 which engages the shaft 8. The longitudinal axis of each recess 7 is inclined at an angle, preferably 30 degrees, to a transverse plane of the shaft to eliminate slipping between the balls 1 and 3. The balls 1 are retained by rim members 9. The segments 5 are surrounded by a ring 6 and tapped holes 10 facilitate the removal of the segments.
Patent GB-145430-A (GB)
Title: A process for obviating the high inflammability of celluloid
IPC: B05D5/00
Filed: 1920-06-17
Abstract: 145,430. Folien & Flitterfabrik Akt.- Ges. Sept. 13, 1917, [Convention date]. Celluloid, treatment of.-The inflammability of celluloid is lessened by coating it with a film of gelatine by dipping, spraying, painting, &c. The article may be first coated with an acetic-acid solution of glue, and the final article submitted to pressure. The gelatine may be hardened by formaldehyde, alum, &c.
Patent GB-478194-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03D7/10
Filed: 1936-06-13
Abstract: 478,194. Valve receiving circuits. KINROSS, R. I., and BROWN, W. J. June 13, 1936, No. 16526. [Class 40 (v)] In a supersonic heterodyne receiver employing a single-valve frequency changer an inductance 13 is included in the cathode lead to prevent frequency drift (a) when, as shown, the bias on the signal grid is adjusted for the purpose of volume control, or (b) when the mains voltage varies. The value of the inductance depends on which of these purposes is in view and is found by trial. An example of a suitable size in a particular case is given in the Specification. According to the Provisional Specification, the frequency changer may be biassed by a differential D.C. voltage obtained from circuits tuned above and below the correct intermediate frequency either to correct frequency drift due to mains variations or to obviate the use of an impedance valve shunted across the local oscillator circuit in receivers having " pull-in " tuning.
Patent GB-985001-A (GB)
Title: Tinning of aluminium
IPC: C23C18/31
Filed: 1963-04-26
Abstract: Aluminium is tinned by immersion in an aqueous bath containing a stannate salt (being either sodium stannate or potassium stannate), and an anion of a polyhydroxy carboxylic acid. Preferably the anion has less than 8 carbon atoms and may be either (i) a polyhydroxy monocarboxylic acid anion-gluconate, glucoheptonate, glycerate; or (ii) a polyhydroxy polycarboxylic acid anion-saccahrate, tartrate. The anions may be added as the sodium or potassium salts or, alternatively, they may be added as acid, e.g. gluconic, saccharic acids; or as a lactone, e.g. glucono-delta-lactone, or the delta-lactone of glucoheptonic acid. Mixtures of these compounds may be employed. Potassium and/or sodium stannate in amounts from 15 gms./litre to saturation is dissolved in water, e.g. 70 gms./litre, the resulting solution containing about 30 gms./litre of tin. Sufficient KOH and/or NaOH may be initially added to form a bath containing 4 gms./litre (ranges 0-12 gms./litre, usually 2-12 gms./litre) to prevent precipitation of tin due to low pH. During operation the free alkali metal hydroxide is maintained between 0.5 gms./litre and 12.0 gms./litre, preferably 4 gms./litre in range 1-8 gms./litre. Immersion plating is effected at between 20  DEG C. and 90  DEG C.; immersion time is 1-6 minutes, e.g. 4 minutes, and pH value not less than 12.
Patent GB-1047102-A (GB)
Title: Crop chopper knife
IPC: A01D34/535
Filed: 1965-04-20
Abstract: 1,047,102. Flail-mowers. DEERE & CO. April 20, 1965 [April 23, 1964], No. 16537/65. Heading A1F. A rotary knife for a flail-mower or forage-harvester comprises an upstanding shank portion 36 and a substantially flat cutting-portion 38 integral therewith, the shank-portion being of U-section with adjacent limbs 44 in contact and a smooth, rounded, leading edge 40, this edge, where it merges into the cutting-portion gradually spreading itself from its convex shape into an enlarged flattened surface 56 terminating in a cutting edge 50, the surface being concave in a direction parallel to that of the shank portion. The knife may be made by folding a flat plate to form the shank, the under-portion of the surface 56 being hollow and re-entrant with side edges 52 converging upwardly and rearwardly to form the rear edge 42 of the shank. The shank is formed with a hole 46 to receive a link whereby, the knife is attached to the rotor. The device is shown incorporated in a tractor mounted flail-mower (Fig. 1, not shown).
Patent GB-1380238-A (GB)
Title: Method of bringing a plurality of containers in transportable condition by means of a carrier member and an assembly obtained by application of said method
IPC: B65D73/00
Filed: 1973-04-06
Abstract: 1380238 Packaging cans HEINEKEN TECHNISCH BEHEER BV 6 April 1973 [10 April 1972] 16554/73 Heading B8C A plurality of containers, e.g. beer cans, are connected together and to a flat carrier member by gluing. The carrier member may be made of cardboard or plastics material.
Patent GB-276309-A (GB)
Title: Improvements in or relating to apparatus for printing in succession from a series of printing blocks
IPC: B41L19/00
Filed: 1927-06-22
Abstract: 276,309. Chambon, L. Aug. 19, 1926, [Convention date]. Addressing and like machines. - Printing- blocks, type-bars, or plates placed on an intermittently actuated endless band 1 are moved into guides 8 and pass in turn into grooves in plates 10 carried by a pivoted lever 11, which raises the blocks into grooves in a reciprocatable carriage 13, by which each block is moved into one of a series of holders 18 radially arranged on an intermittently rotated drum 19. Each holder 18 when it reaches the top position is raised by the lever 11 into position to receive a block, and each block when it arrives at the lowest position is inked, and a web of paper supported on a platen 27 pivoted at 28 is pressed against the block, the web being advanced by feed rollers 35, 36, cut into sheets, and delivered in counted batches. The platen 27 is actuated by an eccentric 29, the drum 19 is rotated by a Maltese cross gear, the speed being variable so that two or more impressions may be printed from each block, and the lever 11 and carriage 13 are actuated from cams fixed on a shaft 44. Where printing is required from a part only of each block, a cover 40 is moved over the other part by means of a cam on the shaft 44 acting through links 41, 42. Each block as it is moved into a holder 18 pushes the used block on to a delivery belt 7. Inking-apparatus.-The printing-blocks on the drum 19 are inked by rollers 23, 24 carried by a lever 25, which is pivoted at 65 and is oscillated bv a link 56 connected to the platen 27 so that the rollers move along a guide 31 to an inking- surface 47 supplied by a messenger roller 32 moved alternately into contact with a duct roller 34 and the surface 47.
Patent GB-796080-A (GB)
Title: Improvements in or relating to automatic electric circuit breakers
IPC: H01H1/58
Filed: 1956-05-30
Abstract: 796,080. Automatic circuit-breakers. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. May 30,1956 [June 9, 1955], No. 16677/56. Class 38 (5). [Also in Group XXXVI] A circuit-breaker with a time delay trip device, providing long and short delays, is arranged to trip instantaneously if a fault current flows during the closing operation. In a circuit-breaker generally similar to that described in Specification 789,056, magneticallyinsulated cores 166 and 167 are mounted horizontally and attract armatures 292 and 193 to respective pole faces 173 and 179. Armature 193, having the lower setting, is pivoted at 199 and operates the main time-lag device 245, which is similar to that of the abovementioned Specification, through a spring link 201 and member 211 secured to the diaphragm 227 of device 245. At the end of the delay, a pin 217 on the link 201 engages trip lever 225, also pivoted at 199, and raises it into engagement with trip-bar 125. Armature 292 has a higher setting and operates a valve, as in the above-mentioned Specification, to reduce the time lag of device 245. Armature 292 is carried on a lever 293 which is pivoted at 199, and has pivoted on it at 345 a spring-controlled lever 347 which is normally held inoperative by a lever 355, pivoted at 199 and carrying roller 359, coacting with switch arm 33. When the breaker is open lever 355 is moved clear and the end of lever 347 moves beneath a projection 349 on arm 225 and enables armature 292 to effect instantaneous tripping of the breaker if it is attracted during circuit closing. A compression spring 373 in a cylindrical cover 379 tends to cause the lever 355 and roller 359 to follow the switch arm 33 during closure of the breaker, but the dashpot action of a piston 371 in a cylinder 367 delays this movement, so that lever 355 does not free the lever 347 from projection 349 until after the breaker is fully closed.
Patent GB-582405-A (GB)
Title: Improvements in or relating to electrical signalling systems
IPC: H03K7/08
Filed: 1940-11-20
Abstract: 582,405. Pulse modulation. STANDARD TELEPHONES & CABLES, Ltd., BEATTY, W. A., and HOUGHTON, L. W. Nov. 20, 1940, No. 16698. [Class 40 (v)] Sound or other signal waves are transmitted in the form trains of damped radio frequency oscillation, the initial amplitude of each train being made proportional to the instantaneous amplitude of the signal wave by the shock excitation of an oscillatory circuit in response to voltages, the rates of change of which are proportional to said instantaneous amplitudes. A train of rectangular pulses 11 of a frequency, say 15 kc., is passed through an impedance network such as a capacity-resistance network to produce short sloping-edged pulses of opposite sign corresponding to the leading and trailing edges of the rectangular pulses. The short pulses of one sign are removed (Fig. 2) and the tips of the other pulses 15 are reduced (Fig. 3) by amplitude filters. The pulse train is now passed to a variable gain amplifier 16, Fig. 5, the gain of which is controlled by the signal wave and the output of which is subject to amplitude limitation with the result that the pulses, Fig. 4, have slopes dependent on the wave amplitude. These pulses of positive sign are used to shock excite an oscillatory circuit comprising an inductance 38, resonating at, say 1 m.c., in the output circuit of a valve 31 normally biassed to cut-off. The leading edge of a pulse causes the valve to pass current and the shock excitation of inductance 38 initiates a train 39, Fig. 6, which is rapidly damped by the low impedance of the valve. A further train 41 is initiated by the trailing edge of the pulse, but the train persists for a longer period since the impedance of the valve is now high. The initial amplitudes of the trains depend on the slopes of the pulses and therefore on instantaneous signal amplitudes. The output across the inductance 38 may be coupled to an antenna or other transmission means. The shock excitation of the circuit results in a number of transmissions spaced at intervals of 15 kc. on each side of the osciliatory frequency 1 m.c. and it is stated that transmissions within 150 kc. on each side of 1 m.c. give satisfactory reception.
Patent GB-1108249-A (GB)
Title: Pigment dye lakes
Inventor: HAUBRICH HEINZ
IPC: C09B63/00
Filed: 1967-04-12
Abstract: Nitroalkyd resin lacquers comprise 100 grams of a nitroalkyl resin lacquer and 3 grams of a Ca, Mn, or Ca/Mn lake of one of the following monoazo dyes.  <FORM:1108249/C3/1> <FORM:1108249/C3/2> The lacquers may be sprayed.ALSO:The invention comprises Ca, Mn or Ca/Mn lakes of the following two monoazo dyes.  <FORM:1108249/C4-C5/1> <FORM:1108249/C4-C5/2> The preparation of the monoazo dyes by diazotization and coupling is described and the lakes are formed by adding an appropriate Ca and/or Mn salt, e.g. calcium chloride, to the coupling mixture when coupling has been completed, followed by heating at 90 DEG  C.
Patent GB-151741-A (GB)
Title: Improvements in the admission and exhaust pipes of internal-combustion engines
IPC: F02B25/14
Filed: 1919-07-04
Abstract: 151,741. Snarry, J. W., and Bullows, J. R. July 4, 1919. Cylinders, pipes for.-A split ring embraces the cylinder and comprises separate admission and exhaust passages b, a with terminal pipes d, c and communicating with ports in the cylinder wall,
Patent GB-240572-A (GB)
Title: Method of and apparatus for the production of radio-waves
Filed: 1924-07-12
Abstract: 240,572. Japolsky, N., (Seleznev, A.). July 12, 1924. Aerials and like radiating and receiving conductors; directive signalling; coupling oscillating and radiating circuits.-Electromagnetic waves for signalling and power transmission are directionally propagated from the end of a solenoid winding, in which an advancing current wave is produced by means of multi-phase highfrequency current. As shown in Fig. 1, high-frequency currents are produced by a thermionic valve 1 having its grid and plate circuits coupled by the coils 7, 8. The plate battery 5 and series coil 6 are shunted by a condenser 9 and the primary winding 10 of a transformer. The secondary coil 13 supplies current to two parallel circuits including respectively pairs of coils 14, 15 set up with their axes at right angles. By suitable inductances and capacities 16, 17, 18 the phases of the currents in the coils 14, 15 are brought into quadrature so as to produce a rotating field which cuts a closed coil 19. Spaced points on this coil are connected to spaced points along the propagating solenoid 20. This is stated to produce advancing current waves in the solenoid and to result in the propagation of waves from that end of the solenoid towards which the current waves move. The coils 14, 15 may be dispensed with by connecting the phase-adjusting circuits to quadrantal points on the coil 19. The propagation coil A, Fig. 4, may be bent into horse-shoe shape and may co-operate with a similar coil B at the receiving station, the waves being reciprocally propagated as indicated by the arrows. The solenoid 20 may be replaced by a set of linear parallel conductors connected similarly to the drum windings of armatures to form a closed circuit.
Patent GB-793184-A (GB)
Title: Processes of preparing insecticidal preparations
IPC: C07C271/06
Filed: 1954-06-08
Abstract: Compounds of the general formula N(CH3)2-COOR where R represents a phenyl or naphthyl group, are prepared by heating phenol or a - or b -naphthol with dimethyl carbamic acid chloride in the presence of an acid binder.  In the preparation of N,N-dimethyl-a -naphthyl carbamate, trimethylamine is reacted with phosgene in toluene solution and the dimethyl carbamyl chloride produced is isolated and reacted with a -naphthol in the presence of pyridine.  The products are employed in insecticidal compositions (see Group VI). Specification 743,958 is referred to.ALSO:A process of preparing an insecticidal composition is characterized in that a substance of the general formula N(CH3)2COOR, where R represents a phenyl or naphthyl group (see Group IV (b)), is diluted with an aqueous or solid inert carrier.  Specific active substances mentioned are N,N-dimethyl phenyl- and N,N-dimethyl a -naphthyl carbamates.  The active substance may be dispersed in water directly or in the form of a solution in an organic solvent.  Solid carriers mentioned include kaolin, dolomite and talc.  An aqueous emulsion containing N,N-dimethyl naphthyl carbamate is referred to. Specification 743,958 is referred to.
Patent GB-860444-A (GB)
Title: Apparatus for the determination of the accuracy of shaped bodies
IPC: G01B7/28
Filed: 1957-05-27
Abstract: 860,444. Determining accuracy of shape. PATENTUND VERSUCHSANSTALT. May 27, 1957 [May 30, 1956], No. 16802/57. Class 40 (1). The accuracy of shape of a body of rotation is determined by rotating the body relative to a feeler which transforms the circumferential fluctuations into varying amplitude electrical signals and comparing the latter with a reference signal stored in an electrical storage member. In Fig. 1 the body 1 is held in jaws 2 and rotated by friction from the roller 3 driven by the motor 9 and pressed into contact with the body by the spring 10. A feeler 12 is displaced by irregularities in the circumference of the body and differentially varies the inductance of two coils in the A.C. bridge 14. The output signal is rectified at 19 and applied to the grid of the valve 20 across the anode load of which appears the voltage U M  representing the instantaneous value of the radius of the body at the point where the feeler touches it. Across the anode load is connected a circuit comprising two rectifiers 23 and 25 and two condensers 24 and 26, so that the voltages across the latter represent the minimum and maximum values respectively of U M . The time constants of the circuits are chosen so that the voltage across the high resistance 27 represents the peak-to-peak value of the fluctuations either per revolution of the body, or (if the body is simultaneously displaced along its axis) over the whole surface of the body. The voltage across 27 may be used to supply an indicator or may actuate an automatic sorting-device when it exceeds a predetermined value. The rectifiers 23 and 25 are preferably semiconductors such as germanium but may also be high vacuum or gas diodes. The storage elements 24 and 26 may be normal or ferroelectric condensers, or may be coils with ion cores of high remanence. The resistance 27 can be omitted if the condenser 24 is initially switched to a voltage greater than the maximum to be measured and condenser 26 is simultaneously discharged by another switch. The body under test may be a cylindrical or tapered roller or a ball.
Patent GB-168036-A (GB)
Abstract: 168,036. Meyfarth, G., and Soc. Anon. des Ateliers de Secheron. Aug. 18, 1920, [Convention date]. Regenerative braking systems.-Regenerative braking of direct current series motors, as used for traction and other purposes, is carried out by providing a separate exciter with automatic means for keeping the regenerated voltage, during braking, at a suitable chosen value. In the arrangement shown the motor 1 has its field 2 excited by a motor-generator set 7, 12, which is supplied from a battery 6 or other constant auxiliary source. One field winding 9 of the generator 12 receives a constant current from 6 through a resistance 13 previously adjusted according to the required conditions. An opposing field winding 10 receives a variable current from a small generator 4 coupled to the motor 1. The resultant effect is that the current output of 12 tends to change, so as to compensate for variations in the speed of the main motor. A third field winding 11 shunted across a series resistance 3 and compounded with 9 and 10 modifies the effect in the direction of tending towards a constant regenerated current. Instead of using a counter winding on the generator side of the exciter set, tho same effect may be obtained on the motor side to the terminals of the generator 4.
Patent GB-1472191-A (GB)
Title: Organic semiconductor material
IPC: H01L21/34
Filed: 1974-04-17
Abstract: 1472191 Semi-conductor material MAT. SUSHITA ELECTRIC INDUSTRIAL CO Ltd 17 April 1974 [20 April 1973] 16809/74 Heading H1K Semi-conductor material comprises organic material doped with impurity atoms selected according to their valency and the number and valency of their nearest neighbour atoms in the crystal lattice of the organic material to impart desired P or N type conductivity. As described, polyethylene is doped by exposing it in the molten state to aluminium or antimony vapour, the impurity atoms being stated to penetrate the crystal structure. The nearest neighbours are four hydrogen atoms at the corners of a tetrahedron having the impurity atom at the centre, and trivalent aluminium imparts P- type conductivity and pentavalent antimony N-type. A PN junction can be made from two oppositely doped films.
Patent GB-624863-A (GB)
Title: Improvements in artificial eyes
IPC: B29D11/02
Filed: 1946-06-03
Abstract: 624,863. Moulding artificial eyes. AMERICAN OPTICAL CO. June 3, 1946. No. 16825. Convention date, Feb. 9, 1944. [Class 87 (ii)] [Also in Group VI] A mould for marking artificial eyes is made in two parts 4 and 8 mating by means of projections 6 and slots 9. Plaster 7 and 10 is introduced into the removable top 8 and through the removable plate 5 into the base 4.. A plaster impression is taken of a trial wax eye. A scleral eye portion is then moulded in plastic using e.g. liquid soap, or shellac and preferably a thin coating e.g. of sheet " Cellophane (R.T.M.) on the surface of the plaster 7 to prevent adhesion of the surfaces. The scleral portion 1 is then moulded with an iris insert 18 and a transparent resin layer 30, metal e.g. tin foil 11 being used to coat the mould surfaces.