baber/WOPTO huggingface dataset:
Patent GB-635942-A (GB)
Title: Improvements in or relating to devices for collecting and removing broken ends in spinning and like machines
IPC: D01H5/68
Filed: 1947-09-30
Abstract: 635,942. Broken ends, removing, in spinning &c. machines. THOMA, H. Sept. 30, 1947, No. 26355. Convention date, Oct. 17, 1940. [Class 120 (ii)] A device for collecting and removing broken ends in spinning &c. machines comprises a conduit 5, extending longitudinally of the machine, closed at one end and connected at its other end 7 with a source of suction, the conduit being of varying cross-section always increasing from the closed end towards the suction end whilst a series of suction heads 8 project at intervals from the conduit 5, each providing hollow portions extending parallel to the conduit, the heads 8 having spaced openings 9 into which broken ends are adapted individually to be drawn towards the suction source, and each head being of varying cross-section increasing in the direction of movement of the broken ends towards the suction source. The openings 9 preferably increase in size in a direction away from the suction source.
Patent GB-1110284-A (GB)
Title: Improvements in or relating to the continuous analysis of the solid component of a slurry
Inventor: CARR-BRION KENNETH GARFIELD
IPC: G01N23/223
Filed: 1965-06-22
Abstract: 1,110,284. Centrifugal separators. NATIONAL RESEARCH DEVELOPMENT CORPORATION. 16 June, 1966 [22 June, 1965], No. 26414/66. Heading B2P. [Also in Division G1] The solid component of a slurry is partially separated centrifugally to present it for analysis by X-ray fluorescence techniques (see Division G1). Slurry contained in a reservoir (26, Fig. 3, not shown) is pumped (at 25) into the test chamber 10 (Fig. 1) through an inlet tangential to the cylindrical wall of the chamber. The vortex flow induces partial separation of the solid from the slurry and tends to form a continuous packed layer at the window 13 of the chamber. The distance between the baffle of the outlet pipe, axial with the chamber and this window 13 is adjustable, by screwing the pipe through the chamber top wall. The window 13 is a polyester film supported by a nylon mesh. A flange 12 holding the window 13 in position can be tightened to increase the tension on the window, for which sealing gaskets 17 are provided. A protective layer 23 in the centre of the window, prevents abrasion of the window by the slurry.
Patent GB-599047-A (GB)
Title: Process for producing indole derivatives
Filed: 1945-10-10
Abstract: Esters of a -acylamido-a -carboxy-b -(3-indole)-propionic acids are manufactured by condensing an indole compound having a b -substituent of the formula <FORM:0599047/IV/1> where R1 and R2 each represents an alkyl, aryl or aralkyl radical or R1 and R2, together form part of a N-heterocyclic radical) with a compound of the formula <FORM:0599047/IV/2> (where R3 represents an alkyl, aryl or aralkyl radical, R4 represents an acyl radical and R5 hydrogen or an acyl radical or R4 and R5, together represent the bivalent radical of a dicarboxylic organic acid).  The condensation may be effected by heat alone through fusion of the reactants, or by heating in an inert organic solvent (e.g. toluene, xylene, pyridine or dioxane), advantageously in the presence of a basic catalyst (e.g. alkali or alkaline-earth metals or their hydroxides, carbonates or alcoholates), and preferably in an oxygen-free atmosphere (e.g. of nitrogen).  The products are intermediates for the preparation of dl-tryptophane by the process of Specification 599,046.  In examples: (1) gramine (3-dimethylaminomethylindole) and ethyl acetamidomalonate are refluxed in toluene in the presence of sodium hydroxide in an oxygen-free atmosphere to produce ethyl a -acetamido-a -carbethoxy-b -(3-indole)-propionate; (2) the reaction of (1) is carried out in pyridine in the absence of sodium hydroxide; (3) gramine and ethyl acetamidomalonate are heated together at 165 DEG C.; (4) b -(diethylaminomethyl)-indole is treated as in (1), yielding the same product (5) b -(N-piperidylmethyl)-indole is similarly treated; (6) ethyl phthalimidomalonate is reacted with gramine as in (1), producing ethyl a -phthalimido-a -carbethoxy-b -(3-indole)-propionate. Additional starting materials specified are, on the one hand, 3-diphenylaminomethyl-indole and 3-dibenzylaminomethylindole, and, on the other hand, methyl pheny, and benzyl acetamidomalonate and esters of formamido-and benzamido-malonic acid.
Patent GB-840656-A (GB)
Title: Variable inductance device
IPC: H03H7/01
Filed: 1956-08-30
Abstract: 840,656. High-frequency resonant structures. COLLINS RADIO CO. Aug. 30, 1956, No. 26569/56. Class 40 (8). A variable inductance for use in the U.H.F. and V.H.F. ranges comprises a composite rod having two portions of different diameter whose relative lengths may be varied. The invention is based upon the fact that within the above frequency ranges a conductive rod behaves as an inductive reactance and has an inductance which is a function of its diameter. The inductive rod may comprise two threaded parts 11, 12, Fig. 2, one of which is fixed to a conductive base 10 whilst the other extends freely through a box-section conductive element 19 supported from the base by an insulating column 21. The sleeve portion 12 of the inductance is electrically connected to member 19 by conductive fingers 13 carried by this member. The equivalent circuit of the arrangement of Fig. 2 is shown in Fig. 4, corresponding points being indicated by the same reference letters. When switch 25 is closed on tap 3 the circuit is a coupling T-network, the coupling inductance BA of which may be adjusted by axial movement of the sleeve 12 upon the threaded shaft 11. The sleeve may be locked in its adjusted position by a screw 26. When the switch is closed on tap 1 (as shown) an output of variable voltage and phase is derived across the terminals BN as the sleeve 12 is adjusted.
Patent GB-1188312-A (GB)
Title: Windscreen Wiper Blade Assemblies
Inventor: SCINTA ANTHONY COSMOS
IPC: B60S1/40
Filed: 1967-06-08
Abstract: 1,188,312. Windscreen wipers. TRICO PRODUCTS CORP. 8 June, 1967 [10 June, 1966], No. 26606/67. Heading A4F. A windscreen wiper blade assembly comprising a pressure distributing harness having a substantially centrally disposed tubular member 48 for receiving a connecting pin 56 on a wiper arm 30 is provided with a releasable latching means for interlocking the blade assembly and the pin 56 in a manner permitting rotation of the assembly about the pin. The latching means may comprise a coiled spring 51 so arranged eccentrically with respect to the tubular member 48 that the ends of the spring bear on the adjacent ends of two levers 32 34 which are pivoted together by the tubular member and which form part of the harness, and a portion of the spring intermediate its ends is engageable with a recessed portion of the pin 56 when inserted in the tubular member 48. The spring 51 may be urged by a push button or finger piece to disengage the pin.
Patent GB-1497456-A (GB)
Title: Bags made from pvc film
IPC: B31B23/00
Filed: 1976-05-25
Abstract: 1497456 Making bags from PVC film CROFTON Ltd 25 May 1976 [23 June 1975] 26632/75 Heading B5D [Also in Division B8] In a method of making bags from PVC film which originated as lay flat tubing, the face A of the film that was the inside surface of the lay flat tubing is arranged to form the outside surfaces of the bags and vice versa. The bags are produced by longitudinally folding and then transversely seaming and cutting a single thickness web 6 obtained by trimming off the longitudinal edges of the lay flat tubing. The web may be longitudinally folded along its centre line or along a line 10 offset from its centre line. In the latter instance the longitudinally extending single thickness marginal portion 14 of the folded web may or may not be folded over prior to the transverse searing and and cutting operation. Said single thickness marginal portion 14 forms closure flaps in the finished bags. The finished bags may be stacked. The PVC may be between 12À5 and 100 microns thick.
Patent GB-1381777-A (GB)
Title: Control of electric motors for battery-operated vehicles
IPC: H02P3/12
Filed: 1972-06-08
Abstract: 1381777 Control of D.C. motors CABLEFORMLtd 21 May 1973 [8 June 1972] 26669/72 Heading H2J  In a control circuit for a series motor A.F. having a freewheel diode D2 connected across it, the motor is connected to a battery B through a chopper switch S. A circuit comprising braking- diode D1 in series with a contactor coil C is connected across a circuit comprising the armature in series with a resistance R short circuited by normally closed contacts C1 of the contactor. When the motor is braked, by reversing the field connections, current flows through diode D1 energizing the contactor to open the contacts C1 so that the generated armature current flows through the resistor and energy is disipated as heat. The contactor may also have a set of normally-open contacts C2 arranged to reduce the pulse rate of the chopper switch during braking. In a further embodiment the resistance and shorting contacts are connected in the diode D1 branch of the circuit.
Patent GB-1240428-A (GB)
Title: Integrated circuit band pass filter
IPC: H01L21/822
Filed: 1970-06-03
Abstract: 1,240,428. Semi-conductor device. INTERNATIONAL BUSINESS MACHINES CORP. 3 June, 1970 [11 June, 1969], No. 26722/70. Heading H1R. A band-pass filter as shown in Fig. 3 is provided by a semi-conductor device comprising a semi-conductor layer, a ground plane layer on the lower surface of the semi-conductor layer, an insulating layer on the upper surface of the semi-conductor layer, a conductive line overlying the insulating layer, and a region of highly doped semi-conductor material immediately below the insulating layer so that it has a high capacitive coupling to the line, and a low capacitive coupling to the ground plane, The conductive line 20, Fig. 1, has a meandering shape and a small gap 36 in it, and can be represented by inductance L, resistance R1 and a series capacitance. The region of highly doped semi-conductor material 28 is formed by doping a region of the semi-conductor layer which follows the same path as the conductive line, and lies directly below it. Thus, capacitors C1 are formed between the conductive line 20 and the highly doped region 28. Capacitors C2 and resistors R2 represent the coupling between the highly doped region and the ground plane 14. The ground plane and conductive line may be made of aluminium and may be deposited by vapour deposition. The semi-conductor, layer may be silicon, with N- type doping, or germanium or gallium arsenate with P-type doping, and the insulating layer may be silicon dioxide or nitride. A continuous frequency band signal is passed by this circuit, as the low-frequency portion passes through L and R 1  and the series capacitor and is severely attenuated; the high-frequency portion takes the path to ground through C1 and C2 and is also severely attenuated, and the medium frequency portion takes the C1, R2 path and is only lightly attenuated.
Patent GB-946732-A (GB)
Title: Improvements in devices for forming heat sealable blanks into box form
IPC: B65D5/24
Filed: 1962-07-12
Abstract: 946,732. Erecting cartons. ATLAS GENERAL INDUSTRIES Inc. July 12, 1962 [July 25, 1961], No. 26781/62. Heading BSD. [Also in Division B8] Apparatus for setting up cartons comprises a plunger 65, a die 30, 31 into which a carton blank 11 can be pressed by the plunger to effect the setting up thereof and the pressing together of overlying blank portions which during setting up are to be secured on to the other by a thermoplastic adhesive preapplied to the blank, a magazine (not shown) to contain a stack of blanks, a transfer device 62 with suction grippers 58, 59 to carry the blanks singly and release them at a position over the die for movement into the die by the plunger, and heater means 56, 57 at the die to heat the preapplied adhesive until the blank is engaged by the plunger when pressed into the die. The heater means are placed above the throat of the die to produce prefolding between the heater means and blank feeder, the blank being held in place by means of lips 52<SP>1</SP> on elements 52. The box sides are pushed in by plungers 70, which locate in grooves 71 of the main plunger 65, and the box is pushed out of the bottom of the die by the next box entering at the top. The machine is adjustable for various sizes of box. The die may be heated by steam or electricity and operated by short-stroke pneumatic servomotors, particularly diaphragm-type actuators. Folding rules 60, 61 are provided at the four corners of the feeder and are used to fold in the gussets.
Patent GB-209182-A (GB)
Title: Improvements in apparatus for cleaning and clarifying used lubricating oil
IPC: C10M175/00
Filed: 1922-10-04
Abstract: 209,182. Richards, T. D. Oct. 4, 1922. Recovering waste lubricants.-Used lubricating oils are made fit for re-use by passing an agitated mixture with water through a series of concentric wire gauze screens into a settling- vessel. Using the apparatus shown a steamagitated mixture of 1 volume of oil with about 40 volumes of water is run into a funnel 12 and passes through a grating 14, a pipe 15, concentric screens 16, 17, 18, a transverse screen 24, a pipe 32, and concentric screens 33 to a solid diaphragm 34. The upper layer, consisting largely of oil, flows through a perforated extension 35, screens 39, 40 and inlet 36 to a settling vessel 45, while the watery layer passes through an opening 50, screens 39, 40, and inlet 54. The oil is taken off by a pipe 72 to louvre tables 77, 78, where it is freed from light oils and remaining water by capillary attraction, and is run off through a channel 47; the water flows to a waste pipe 45 through a pipe 59 having an air inlet pipe 52 to prevent siphoning. Solid impurities filtered or settled out collect in the pan bottoms 21, 91 of the concentric screens and in the bottom of the vessels; they may be removed from the vessels 30, 48 through valves 43, 68. There are also provided overflow pipes 27, 46 having air-inlet pipes 49, 51 to prevent siphoning, and perforated baffles 41, 57, 58, 69 and a plain baffle 62 to prevent surging of the liquid.
Patent GB-1248097-A (GB)
Title: New vaccines and processes for their preparation
IPC: C07K16/12
Filed: 1969-05-27
Abstract: 1,248,097. Vaccines. INSTITUT MERIEUX. 27 May, 1969 [28 May, 1968], No. 26822/69. Heading A5B. Vaccines comprise a combination of an agglutinogenic antigen with sufficient of an immune serum to that antigen to saturate all the agglutinogenic sites of the antigen. Vaccines specified are effective against brucellosis, coli-bacillosis, salmonellosis, staphylococial illness, streptococcal illness, tuberculosis, whooping cough, cholera, plague, Newcastle disease and influenza. The antigen may consist of inactivated whole bacteria or attenuated live bacteria.
Patent GB-658102-A (GB)
Title: Improvements in or relating to an alarm or protective apparatus responsive to the degree of dryness of a layer of adhesive provided on a continuously moving strip
IPC: B05C11/00
Filed: 1948-10-15
Abstract: 658,102. Actuation of switches. NAAMLOOZE VENNOOTSCHAP VEREENIGDE TABAKSINDUSTRIEEN MIGNOT & DE BLOCK. Oct. 15, 1948, No. 26875. Convention date, Nov. 18, 1947. [Class 38(v)] [Also in Group VIII] An alarm apparatus or safety device responsive to the degree of dryness of a layer of adhesive applied to a continuously moving web comprises a member adapted to be moved against a frictional force or the force of a spring and being in sliding contact with the layer of adhesive or an intermediate roller which is in touch with said layer, and an alarm or device for stopping the machine which is operated by the displacement of the member, such displacement being caused by an increase in the humidity of the adhesive which increases the friction between it and the member or between the member and the intermediate roller. A web 1, Fig. 4 of cigarette paper having been coated with adhesive 2 along one edge and dried is passed over a roller 18 prior to being sealed. A sliding member 19 is attached to an arm 20 slidably and pivotally mounted in a holder 21 and rests upon the roller 18 being restrained'from moving by a spring 22. If the adhesive is tacky some will adhere to the roller and so cause the member 19 to move and throw over a switch 24 bringing into operation an alarm device or a device for stopping the machine. In a modification, Fig. 1 (not shown), the member 19 rests directly on the layer of adhesive. In a further modification, Fig. 2, a disc 12, restrained from moving by a spring 14, is mounted such that it maintains sliding contact with the web of paper 1. If the frictional contact between the disc and the web increases caused by the adhesive being tacky, a projection 15 will throw a switch 17 bringing an alarm or a device for stopping the machine into operation.
Patent GB-952626-A (GB)
Title: A frequency control system
IPC: G01R23/00
Filed: 1960-08-04
Abstract: 952, 626. Automatic speed control. SUNDSTRAND INTERNATIONAL CORPORATION S. A. Aug. 4, 1960 [Sept. 16, 1959], No. 27043/60. Heading G3R. [Also in Division H3] Two waves are compared in a phase comparator to produce a D. C. output voltage of polarity indicating whether a particular one is leading or lagging in frequency and also, if the frequencies are the same, whether leading or lagging in phase. As shown, a generated and a reference frequency are squared and differentiated in circuits 35, 36 to derive through rectifiers 72, 73 positive going pulses applied to trip bi-stable circuits and produce rectangular output pulses at 6, 5 of frequency one half that of the initial waves which are differentiated at 82, 83 to produce over one-way conductors 86, 87 negative going trains of pulses each applied to opposite inputs of a further bi-stable circuit 43. The latter output (9) would be a series of rectangular positive pulses of continually increasing or decreasing duration depending on whether the generator was above or below the reference frequency giving a sawtooth wave output at 14 with a flyback whenever the pulse inputs to 43 coincide and then reverse their sequence of occurrence. This is obviated by producing by integration other sawtooth waves at 10, 11 and differentiating at 47 or 48 each flyback to derive pulses applied to diodes 106, 107, one of which 106 or 107, conducts a negative going pulse depending on whether the generator or reference frequency is leading, the other blocking a positive pulse of opposite polarity. The pulses through diodes 106 or 107 cancel the effect of one of the pulses tripping bi-stable circuit 39 or 40 to ensure a 180 degree phase shift of one of the pulse trains applied to bi-stable circuit 43 so that a positive or negative integrated output at (14) is maintained depending on and indicating the sign of the frequency difference. Alternatively, at equal frequencies, the output at (14) indicates in magnitude and polarity phase shift of the two input waves over an angle Œ 360 degrees. The output 14 may be applied to a variable speed drive between a power source and a motor generator producing the generated frequency, controlling it in frequency and phase.
Patent GB-747342-A (GB)
Title: Improvements in and relating to pithead gear safety catches for pit cages or skips
IPC: B66B5/18
Filed: 1951-11-19
Abstract: 747,342. Safety catch gear for mine cages. DAVIES, sen., E. A., and DAVIES, jun., E. A., [trading as BARKER, DAVIES & CO.]. Nov. 19, 1951, No. 27113/51. Class 78 (5). Pithead safety catches for pit cages or skips comprises detents or keps 9 pivotally mounted in a column secured to the head frame and comprising two spaced channel-section members 7 having a facing plate 8 with a.series of holes 12 through which the noses of the keps pass, the tails passing through holes 18 in a vertically movable plate 19 so that the keps may be moved out of position by mechanical control means. The noses of the keps are normally projected by a spring 29, secured to the channel-section member, into the well. The plate 19 has an attached bracket 20 pivotally linked to one arm 22 of a bell-crank lever, the other arm 24 of which passes between quadrants 25. By swinging the arm 24 the plate 19 can be moved downwards to pivot the keps out of position. In an intermediate position of the arm the keps are free'to.pivot and in another position of the arm the tails are moved upwardly to free any kep that has become fixed.
Patent GB-1045809-A (GB)
Title: Improvements in or relating to slippers
Inventor: WHITEHEAD COLIN
IPC: A43B13/28
Filed: 1964-07-01
Abstract: 1,045,809. Boots &c. PETER BLACK (KEIGHLEY) Ltd. June 23, 1965 [July 1, 1964], No. 27137/64. Heading A3B. A slipper is made by assembling an upper 11 by stitching together parts 2, 3, turning the upper 11 inside out, stitching the edges of the upper 11 to a textile insole 9, turning the upper and insole right side out, placing the upper on a heated last for a predetermined period for shaping purposes, transferring the upper and insole to an unheated last, adhering a bottom filler 16 (not shown) to the insole and adhering a sole-heel unit 12 (not shown) to the shoe bottom under pressure. The upper 11 is assembled from parts 2, 3 having edge-binding 6 which are stitched together along seams 4, 7. The edge of the upper is gathered and has an inwardly extending margin 17. The sole and heel unit is secured by coating the shoe bottom and sole-heel unit with adhesive, allowing it to dry and activating the adhesive by heat e.g. by passing the components through an infra-red heat tunnel. If the upper is made of plastics material e.g. polyvinyl chloride, the margins 17 of the upper may be treated with a solvent to make it suitable for receiving the adhesive coating. The soleheel unit may be preformed and may have an imitation welt in the form of a resinrubber or plastics strip which is adhered to the periphery of the upper face of the unit or the unit may be assembled from sole and a heel lift of wood, cork or expanded cellular material, the edge of the unit being covered with suede leather or plastics material.
Patent GB-852606-A (GB)
Title: Improvements in or relating to the polycondensation of salts of dicarboxylic acids and diamines
IPC: C08G69/28
Filed: 1958-08-26
Abstract: Polyamides are made by condensing diaminedicarboxylic acid salts in the presence of diphenyl and/or diphenyl ether.  The condensation may be effected in one or two stages in which latter case the diphenyl and/or diphenyl oxide is separated from the precondensate prior to continuing the condensation in the melt. In the Examples, m-xylene diammonium adipate is condensed in the presence of:-(1) diphenyl ether and stearic acid, (2) a eutectic mixture of diphenyl and diphenyl ether and (3) diphenyl ether. The starting materials may also contain stabilisers, plasticisors and pigments and matting agents, e.g. titanium dioxide.