baber/WOPTO huggingface dataset:
Patent GB-668829-A (GB)
Title: Improvements in or relating to electrical valve-circuit arrangements
Inventor: BROCKELSBY CHARLES FOUNTAIN
IPC: H03K3/04
Filed: 1948-07-20
Abstract: 668,829. Valve circuits. MARCONI INSTRUMENTS, Ltd. July 20, 1948, No. 19475/48. Class 40 (vi). A pair of valves are connected by switches so that in one switch position they operate as a two-stage amplifier to amplify an input signal and in the other switch position as a trigger-pair circuit which produces an output of rectangular waveform which is controlled by the input signal. In the Figure when switches SW1- SW4 are in position 1 the circuit functions as a normal R.C. coupled two-stage amplifier and input signals applied at terminal " In " are amplified and may be taken from terminal " Out." When the switches are in position 2 the circuit functions as a cathode coupled trigger-pair circuit and the input signal at terminal " In " triggers the circuit to give an output signal of rectangular waveform at terminal " Out."
Patent GB-258844-A (GB)
Title: Improved creel-frame for warping from stationary bobbins
IPC: D02H1/00
Filed: 1926-08-06
Abstract: 258,844. Kr³ckels, J., (trading as Maschinenfabrik Zell, J. Kruckels). Sept. 25, 1925, [Convention date]. Yarns, warping.-In a creel frame for warping yarns from stationary bobbins, vertical bobbins 1 are arranged alternately hanging from and standing on cross bars 2, guides 3 for the threads being arranged between the hanging and standing bobbins. The threads pass vertically from the bobbins to the guides 3. The threads from the guides pass to the collectors 4 in the usual manner. Specification 6653/14 is referred to.
Patent GB-1223463-A (GB)
Title: Dibenzothiadiazocine derivatives
IPC: G03F7/038
Filed: 1968-04-25
Abstract: 1,223,463. Photo-curable nylon compositions. TIME Inc. 25 April, 1968 [26 April, 1967], No. 19539/68. Heading C3R. [Also in Division G2] A photopolymerizable composition consisting of a photoinsensitive linear polyamide and a diketone photoinitiator in which the two keto groups are not adjacent or vicinal and being present in an amount sufficient to render the polyamide photosenstive. Specified photoinitiators are; m benzylbenzophenone; p,p<SP>1</SP> - dibenzoyl diphenyloxide; ethylene glycol ester and diethylene glycol ester of p - benzoyl benzoic acid; bis - 2 - (pbenzoyl phenoxy)ethyl ether; m - dianiarylbenzene; hexamethylene bis - p,p<SP>1</SP> - benzoyl benzamide; 1,6 - dibenzoylhexane and 1,2- di(p - benzoyl - phenoxy or - phenyl) - ethane. The composition may be coated on a support from a solution or be used as a self-supporting film which on imagewise exposure and development produces a printing plate. Specified polyamides are nylons 6, 66, 610, 6/66 and 6/610 and, preferably, their N - hydroxyethyl or N - methoxymethyl derivatives.
Patent GB-569061-A (GB)
Title: Improvements in or relating to shock operated switches
IPC: H01H35/14
Filed: 1943-11-24
Abstract: 569,061. Inertia switches. THOMAS, A. E. F. Nov. 24, 1943, No. 19656. [Class 38 (v)] A shock operated switch, which may be used to light a lamp when goods dropped from aircraft strike the ground, comprises a ball 7 mounted between cupped surfaces 5. 6 and adapted to force them apart into such a position as that shown, by its inertia. The surfaces 5, 6 are formed on levers 1, 2 pivoted at 3, 4 and the above action brings contacts 8, 9 on the other ends of the levers into engagement.
Patent GB-333015-A (GB)
Title: Improvements relating to vegetable cutters
IPC: B26D3/22
Filed: 1929-06-27
Abstract: 333,015. Wilson, W. F. June 27, 1929. Cutting and slicing vegetables. -A machine of the type in which vegetables, such as potatoes, are sliced by a radial blade on a rotating disc that is also provided with a number of tangentially arranged blades adapted to score the vegetables transversely has a movable feed tube co-operating with the disc so that vegetables passing through the tube are first scored in one direction by one set of blades on the disc, then in a transverse direction by another set, and finally sliced by the radial blade. The cutter disc 1 is provided with a radial blade. 2 set opposite a gap 3 in the disc and with two sets of tangential scoring knives 4. The vegetables are, fed down to the disc through a tube 14 provided with an internal vertical fin 15 and adapted to be given oscillatory movements in timed relation with the movement of the cutter disc by an adjustable connection 18, 17, to a vertical shaft 16, rocked by a lever 22 carrying a cam-follower engaging in a groove 24 in a cylinder 25 integral with the driving flywheel 10. The tube is moved through about a right angle so that after being scored by one set of knives 4 the vegetables are scored by the second set at right angles to the first cut. The movement of the feed tube may be given by cam-and-ratchet, eccentric-and-ratchet, maltese cross, pin and starwheel or other mechanism. The feed tube may be oval or polygonal in cross section instead of being provided with a fin to prevent rotation of vegetables. The means for moving the feed tube may be rendered. inoperative. A stationary feed hole 27 may be fitted for bread crumbing or like operations.
Patent GB-261065-A (GB)
Title: Improvements in or relating to sighting devices
IPC: G02B5/04
Filed: 1925-08-05
Abstract: 261,065. lonides, A. C., and Gordon, J. W. Aug. 5, 1925. Sights and methods of sighting.-A gun sight comprises an arrangement of reflecting surfaces by means of which an image of the object aimed at is seen by the marksman apparently projected upon the object itself, seen directly, the projected image being completely reversed, the line or point in common between the image and the direct view identifying the direction of aim. The reflecting surfaces are four in number and comprise two mirrors, 2<a>, 3<a>, Figs. 1, 2, and 3, at right-angles to one another and inclined to the line of sight so that the reflected rays pass to a third mirror 4<a>, so inclined as to reflect the rays to a fourth mirror 5a and from thence in a direction parallel to the original direction of the incident rays. These four reflecting surfaces may constitute surfaces of a prism, Fig. 3, or the angles may be slightly modified to form the prism shown in Figs. 5 and 6, so that the incident and emergent rays are normal to the surfaces through which they pass. The reflecting surfaces 2, 3 effect a lateral reversal of the image, which is afterwards inverted by the reflecting surfaces 4, 5. In use, the prism is mounted so that the marksman looks underneath the lower edge of the face 6, so that the view is observed both directly and in the prism. When used as a rifle sight, Fig. 8, the prism p is mounted in a spring-controlled pivoted casing a<1> so that it may be folded down as shown. The range is set by moving the slide n vertically, by which movement the prism p is caused to tilt about the axis n', by reason of the engagement of a pin on the slide n with the sloping surface p<2>. As the sighting is effected along a line normal to the face of the prism p, tilting the prism causes the marksman to raise the rifle barrel. For guns, a similar prism is used in conjunction with a telescope T, Fig. 10, and is mounted to come opposite the upper half of the telescope objective, duplicating the view. The prism is mounted in a casing at one end of an arm at right-angles to the shaft S, in order that it may be turned out of the line of sight by rotating the shaft S.
Patent GB-1207799-A (GB)
Title: Improvements relating to photographic processing apparatus
IPC: G03D5/06
Filed: 1969-04-17
Abstract: 1,207,799. 799. Photographic processing apparatus. POLAROID CORP. April 17, 1969 [April 22, 1968], No.19742/69. Heading G2A. Apparatus for applying an accurately predetermined quantity of a liquid reagent uniformly to a succession of areas of sheet material 52 comprises a body including end and side walls defining a well 18 for containing a liquid reagent; a cylindrical roll 14 mounted for rotation about its axis within the well with an upper portion of the roll projecting above the well; one of the side walls including at least a portion having a cylindrical surface 27 located in parallel spaced relation to the peripheral surface of the roll, extending upwardly from beneath the roll at least to a horizontal plane through the axis of the roll and co-operating with the surface of the roll to define a channel 27 extending upwardly from beneath the roll; means for rotating the roll in a direction such that liquid is carried upwardly into the channel, the spacing between the cylindrical surface and the roll being such that the channel serves to meter the quantity of liquid carried upwardly on the surface of the roll during rotation thereof; and means 48 for guiding sheet material across the well in contact with a a portion of the surface of the roll moving in a direction opposite to the direction of movement of the sheet. The rotation of the roll entrains liquid between the sheet and the roll to form a meniscus 54. The surface of the roll is textured, e.g. with circumferential grooves to increase the quantity of liquid entrained. The roll and guide plate is provided with a hinged cover, a part 46 thereof co-operating with a curved support surface 34 to form a convergent passage for guiding the leading edge of a sheet into the applicator.
Patent GB-939095-A (GB)
Title: Method of producing deposit
IPC: C23C16/40
Filed: 1961-06-01
Abstract: A method of depositing a layer on the surface of a body from a gaseous compound selected from the group comprising metal carbonyls, organo-metallic compounds, and ethyl silicate comprises connecting the body as a cathode, exposing the surface of the body to the gas, and depositing the layer by glow discharge in the gas. The gas may be at a pressure of 10-1 to 10-2 mm. of mercury and the glow discharge may be produced by a potential of 1200 volts.  The layer produced may be metal or, if oxygen is present, a metal oxide.  A layer may be built up comprising alternate deposits of metal and metal oxide e.g. silicon, silica, silicon.
Patent GB-939120-A (GB)
Title: Means for the electrolytic production of hydrogen and oxygen and for the safe consumption thereof
Inventor: HENES RAYMOND ARTHUR
IPC: C25B9/00
Filed: 1962-05-23
Abstract: 939,120. Electrolytic generator of a mixture of hydrogen and oxygen. HENES MANUFACTURING CO. May 23, 1962, No. 19762/62. Class 41. [Also in Groups XXII and XXIX] An electrolytic generator produces a mixture of hydrogen and oxygen and delivers the mixture through a restricted outlet to a flash-back arrestor connected to a welding torch. A generator 10, shown in Fig. 2, has a pure iron anode 12 and cathode 14 having openings 86 and 90 to allow circulation of the electrolyte, e.g. substantially saturated aqueous NaOH. A cover is held closed against an insulating ring 66 by springs 74 but can lift to relieve explosive pressure. The electrolysis may employ a current of 250 amps. at 4 volts giving a current density of 1 amp./ sq. inch of the generator area. A small electrolysing current is supplied via a low wattage lamp 150, Fig. 1, even when a switch 148 is open so that gases in the generator are not allowed to recombine and evacuate it. The hydrogen and oxygen leave the generator through a restricted outlet 94, Fig. 2, e.g. <SP>5</SP>/ 100  inch in diameter and then pass through a flash-back arrestor 36, Fig. 1, which comprises a U-tube containing non-inflammable liquid. A cork in an arm 40 of the tube can blow out in the event of an explosion. The gases pass througha pressure relief valve 44 (see Group XXIX) and through a flexible conduit 50 to a torch 54 which incorporates a porous carborundum flash-back arrestor 128, Fig. 3, in its handle. Any gases escaping from the relief valve are diluted by air from a blower 136. Instead of the U-tube flash-back arrestor 36, a vertical tube containing water may be used. A further embodiment, Figs. 7 and 10, comprises a generator 162 mounted on a U-shaped aluminium structure 152 whereby heat can be dissipated. The generator comprises a steel anode 174 and cathode 162 having screwthreads or fins to increase their surfaces. Alternatively, the anode may comprise a perforate tube or have an undulated surface. It may be secured and have an electrical connection as shown in Fig. 12 and be replaceable. A float 192, Fig. 10, and rod 194 serve as a level indicator when filling the cell. The generated hydrogen and oxygen mixture is supplied to a welding torch, the gases passing through a restricted outlet provided by a tube fitting 206, a flash-back arrestor comprising a casing 210 having a porous stone filling 212, and being bubbled through methyl alcohol or equivalent liquid hydrocarbon so as to entrain some and so increase the calorific value of the gas mixture (see Group XXII).
Patent GB-247839-A (GB)
Title: Improvements in nozzles for soot cleaning apparatus
IPC: F28G1/16
Filed: 1925-08-06
Abstract: 247,839. Whites Injectors, Ltd., and Borland, F. J. Aug. 6, 1925. Cleaning, fluidpressure processes for.-A steam nozzle for cleaning the return, side, and main flues of Lancashire and Cornish boilers, and the water tubes, flues and pits of water tube and other tubular boilers comprises a double-conical inner nozzle 5, Figs. 2 and 4, fitted at the rear of a discharge tube 1 having internal helical vanes 2 and a flared mouthpiece. Air is entrained by the steam through ports 2<a>, and, when desired, auxiliary steam jets 6, Fig. 4, are provided to increase the diffusion of the steam.
Patent GB-243422-A (GB)
Title: Improvements in or relating to holders for tobacco pipes
IPC: A47G29/08
Filed: 1924-08-21
Abstract: 243,422. L÷hnberg, M. Aug. 21, 1924. Brackets; stands. - An ornamental wall bracket or stand is provided with a hole for the insertion of the mouthpiece of a tobaccopipe. The article is in the form of a head with a human or animal face made from stoneware, clay, gypsum, metal, or wood, the hole forming part of the mouth. Preferably there is an eyepiece for suspension.
Patent GB-440737-A (GB)
Title: Improvements in hose suspender grips
IPC: A41F11/02
Filed: 1934-07-05
Abstract: 440,737. Stocking &c. suspenders. FANTOM GRIP CO., Inc., 535, 5th Avenue, New York, U.S.A. July 5, 1934, No. 19835. Convention date, July 5, 1933. [Class 44] In a stocking suspender of the kind described in Specification 232,871, [Class 44], in which the suspender strap passes through a loop 17 and the top of the stocking is passed through an aperture 11 and looped over a pendant 14, the whole or the lower part of the aperture 11 is V-shaped, the apex of the V being rounded or flattened off slightly. In one form, the aperture is diamond-shaped and in another the lower part is V-shaped and the upper part parallelsided. The pendant 14 may be perforated or it may have a serrated surface. The suspender is made of metal, bone, celluloid, fibre, &c. The Specification as open to inspection under Sect. 91 comprises also 21 modifications having apertures 11 of various shapes. In some forms, the loop 17 is joined to the aperture 11, while in others it is omitted altogether. In some forms, the suspender is formed in more than one piece and may be of wire. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1307594-A (GB)
Title: Apparatus for analysing a time varying alectrical signal
IPC: G01D5/12
Filed: 1970-04-24
Abstract: 1307594 Analysing electrical signals VEREINIGTE FLUGTECHNISCHE WERKEFOKKER GmbH 24 April 1970 [24 April 1969] 19925/70 Heading G1U An electrical signal x(t), Fig. 1, is analysed by establishing an analysis band 13, investigating that portion of the signal that lies within the band, and sweeping the band relative to the signal. As described the signal x(t) = U E , Fig. 6 is fed via a scaling circuit 1 to an adder 5 which adds a sweep voltage U S  to the scaled signal KU E , and the resulting signal KU E  + U S  is applied to two threshold circuits 7, 8 which establish the upper and lower limits of the analysis band 13, Fig. 1. The outputs of the threshold circuits are fed to an appropriate analysis circuit 9 (no details given) which supplies pulses to an integrator 11 to provide an output signal U i . In operation the sweep voltage is initially set at zero and the entire signal U E  is entered. This has the effect of establishing the analysis band 13 in its highest possible position. The sweep voltage U S  is then raised and the signal U E  is re-entered. Since the threshold levels set by circuits 7 and 8 remain fixed, this has the effect of lowering the analysis band relative to the signal. The process is continued, the signal U E  being repeatedly entered as the sweep voltage is progressively increased, the increase being either continuous or discrete. The output signal U i  can be displayed on an appropriate co-ordinate plotter in conjunction with the value of the sweep voltage U S .
Patent GB-806102-A (GB)
Title: Improvements in drilling devices
IPC: E21B6/00
Filed: 1956-06-27
Abstract: 806,102. Percussive drills. BRAUNKOHLEN - UND BRIKETWERKE RODDERGRUBE, A. G. June 27, 1956 [July 11, 1955], No. 19954/56. Class 85 In a drilling device operated by compressed gas the spring-return piston 6, Fig. 1, is provided with a closure plug 5 for the nozzle which communicates with the pressure chamber 2 of the cylinder, the exhaust gases being discharged through a port 12 after clearing the labyrinth grooves 11. In a modification, Fig. 2 (not shown) the piston is formed integral with the drilling tool. The pressure chamber may communicate with a chamber containing solid carbon dioxide, see Fig. 3 (not shown), or be formed in the piston, see Fig. 5, and fed with compressed air through ports 21 controlled by a valve 19. Finally the piston may be formed with a projection engaging a collar disposed in the nozzle leading from the chamber 2, see Fig. 4 (not shown) or the piston may be held in the nozzle-closing position by magnetic means, see Fig. 6 (not shown). The operating medium may be compressed air or nitrogen.
Patent GB-1000044-A (GB)
Title: Improvements in or relating to the testing of metals
IPC: G01N23/222
Filed: 1962-05-24
Abstract: 1,000,044. Radio-chemical analysis. HOESCH A.G. May 24, 1962 [June 28,1961], No. 20051/62. Heading G1A. The chemical composition of metal bodies or melts is determined by irradiating with fast neutrons and analysing the y-rays produced. Fast neutrons from a deuterium-tritium source 13, Fig. 1, are incident on an ingot 11, and γ-rays produced are received by a scintillation detector 14 the output of which may be connected to a pulse height analyser. In Fig. 9, a melt bath 9 is irradiated by a source 213 and a detector 214 detects the metal 211 and slag 111. In modifications of these systems either or both source and detector may have a wide cone of emission or reception, or a small cone scanned over the test object. The cone of reception of the detector may be limited by collimating tubes or by using a colinear array of detectors in a coincidence circuit. A plurality of detectors may co-operate with corresponding detectors to investigate a plurality of areas simultaneously.
Patent GB-1425067-A (GB)
Title: Telemetering synchronization and demodulation apparatus includin  an ambiguity eliminating device
IPC: H03K5/156
Filed: 1973-04-27
Abstract: 1425067 Digital di-phase receivers CENTRE NATIONAL D'ETUDES SPATIALES 27 April 1973 [28 April 1972 10 May 1972] 20069/73 Heading H4P A synchronizing and demodulating receiver circuit for a di-phase modulated carrier, gives a NRZ output, fed through a delay to one stage or more than one cascaded stages, each including a generator deriving clock pulses of frequency F by multiplication of NRZ output signal with the same signal delayed, the arrangement incorporating a phase locked loop, with a NRZ detector at its output.  The delay may be obtained in a shift register (21) (Fig. 4, not shown) fed through amplifier (23) and 2 level limiter (24) providing a rectangular output, stepped at double frequency. The multiplier may be in the form of an exclusive OR (22) logic circuit (A+B=mod 2 sum) feeding into a phase locked loop including exclusive OR 26, amplifier (27) filter (28) and operational amplifier (29) receiving a reference voltage and oscillator (20) feeding a tapped dividing chain 19; output is taken from terminal B. The arrangement comprises cascaded chains I-III each comprising an amplifier 2, generator 3 and phase loop 4. As there are two transitions per period of the carrier frequency FO modulated by di-phase, generator 3I and loop 4I operate at 2FO which is halved at 5 to feed multiplier 6 which may be alternatively of analogue type. The modulated wave is also applied to the other input of multiplier 6 which produces a di-phase output to circuit II operating at 2F (twice bit rate) which is halved  at 7 before being supplied to multiplier 8 which produces NRZ signals to circuit III at bit rate F; the main function of this circuit is to eliminate ambiguity. To reduce the noise band at the input, band pass filters 9, 10 switched by 11a, 11b are provided for each carrier; switches 12a-12c provide for alternative bit rates. It is stated that the threshold of the loop is much lower than the threshold of a system detecting transistions in a noisy message hence a greater amount of noise may be tolerated.
Patent GB-773735-A (GB)
Title: Sewing machine bobbins of either silk, cotton, nylon or other fibres or synthetic material, and methods of making the same
IPC: B65H75/02
Filed: 1955-07-12
Abstract: 773,735. Sewing machine bobbins. PHILIPS, J. M. July 12, 1955, No. 20085/55. Class 112. A bobbin is wound on a spindle of approximately 1/32 inch diameter and after removal from the spindle is subjected to pressure of approximately 1000 lbs. at a temperature of 300 to 400 degrees F. to form a cylindrical bobbin 10 with flat ends which will retain its form. A radial groove 10a is formed in one end face in the press and the central axially projecting thread 11 lies in this groove.
Patent GB-821000-A (GB)
Title: Block and graft copolymerisation
IPC: C08F291/14
Filed: 1957-06-26
Abstract: Grafts or block copolymers are made by polymerizing an ethylenically unsaturated monomer in the presence of a polymer containing mercapto groups but free of groups inhibiting radical type polymerization, graft polymers being formed when the mercapto groups are distributed along the polymer chain and block polymers when the polymer contains mercapto end groups.  Monomers specified are methyl, ethyl, butyl, isobutyl, octyl, dodecyl, ethoxymethyl and chlorethyl acrylates, methacrylates and chloracrylates, acrylonitrile, methacrylonitrile, vinyl and vinylidene fluorides and chlorides, vinyl acetate, chloroacetate and propionate, styrene and vinyl naphthalene. Polymerization is assisted by catalysts such as acetyl, benzoyl, benzoyl acetyl, dibutyryl, di-(tert.-butyl) and succinyl peroxides, tert.-butyl hydroperoxide, potassium persulphate and listed azo compounds. In Examples (1) a styreneglycidyl methacrylate copolymer is reacted with mercaptopropionic acid and ethyl acrylate is then graft polymerized on to the resulting polymer with the aid of azodiisobutyronitrile, (2) methyl methacrylate is graft polymerized as in (1), (3) styrene is bulk polymerized in the presence of mercaptopropionic acid, the resulting carboxyl end groups are reacted with thionyl chloride and then with mercaptoethanol to produce a polymer containing mercapto end groups which is block copolymerized with ethyl acrylate in the presence of azo diisobutyronitrile, (4) the acid groups of a methyl methacrylateacrylic acid copolymer are converted to acid chloride groups which are reacted with mercaptoethanol, methyl methacrylate is graft polymerized on to the resulting polymer with the aid of azodiisobutyronitrile.