baber/WOPTO huggingface dataset:
Patent GB-274046-A (GB)
Title: Improvements in or relating to the production of artificial fuel
IPC: C10L5/14
Filed: 1927-05-24
Abstract: 274,046. Wetherbee, H. E., Grant, R. F., and Hanna, H. M., (Assignees of Wetherbee. H. E. and Jacobus W. L.). July 10, 1926, [Convention date]. Composition fuel. - Subdivided carbonaceous material such as anthracite, bituminous coal or lignite, is briquetted with a binder which comprises a coking material, a toughening, non-coking ingredient, and a filming carrier to apply it evenly to the fuel particles. The coking material may be a petroleum distillation residuum having a melting point of 134‹ F. or a residuum, from the distillation of coal tars. The filming agent may be kerosene, light mineral distillates, light coal tar, gas producer distillate or chemically prepared solvents. Air-blown residuum from petroleum distillation having a melting point of 240‹ F. may be employed as the toughening agent. The filming and binding medium amounting to about 6 per cent of the fuel is applied by agitation of the coal and binder in hot water. The coated material from which excess water is drained off is briquetted and heated for 2-3 hours at 550‹-600‹ F. A binder solution may comprise 10 per cent of kerosene, 45 per cent of coking residuum, and 45 per cent of air-blown residuum.
Patent GB-1455490-A (GB)
Title: Process for the manufacture of low acid number polyesterols
IPC: C08G63/20
Filed: 1974-03-29
Abstract: 1455490 Polyester polyols BASF AG 29 March 1974 [31 March 1973] 14004/74 Heading C3R A process for preparing a polyester polyol having an acid number of less than 1 from an esterification mixture obtained by catalyst-free melt condensation of a polycarboxylic acid and a polyalcohol comprises adding a distillable dialcohol and/or a distillable monoalcohol and/or phenol to the esterification mixture and completing the condensation with removal of excess alcohol and/or phenol by distillation. The examples describe polyesters prepared from adipic acid and one or more of the following: 1,4-butanediol, ethylene glycol, 1,6-hexanediol, neopentyl glycol, vinyl glycol, butyne-2-diol-1,4, polypropylene oxide glycol, N - (n - butyl)- diethanolamine and N,N-bis(hydroxyethyl)-N- propanesulphonate; such polyesters being reacted with methanol or ethylene glycol as the distillable alcohol.
Patent GB-731122-A (GB)
Title: New indanthrene vat dyestuffs
IPC: C09B9/02
Filed: 1953-05-19
Abstract: The invention comprises tetrasulphuric acid half esters of leuco-3,31-alkylsulphonylindanthrenes of the formula <FORM:0731122/IV (c)/1> in which R is an alkyl radical of not more than four carbon atoms and M is a cation.  They are made by heating the disulphuric acid half-ester of the corresponding leuco 2-amino-3-alkylsulphonyl anthraquinone under alkaline conditions with an oxidizing agent, preferably nickel dioxide.  Other oxidizing agents are lead dioxide and alkali metal ferricyanides.  Cations specified are hydrogen, sodium, potassium, lithium, calcium, tertiary and quaternary nitrogen bases.  In examples, the dipotassium salt of the disulphuric acid half ester of 2-acetyl-amino-3-methyl-, ethyl-, or butyl-sulphonyl-anthraquinone is heated with caustic soda solution to hydrolyse the acetylamino group and then with nickel dioxide, salting out the product with potassium chloride or with sodium carbonate. 2-Acetylamino-3-methyl-, ethyl-, or butyl-mercapto-anthraquinone is obtained by the action of sodium sulphide and sulphur on 2-acetylamino-3-bromo-anthraquinone, to give 2-acetylamino-3 - mercapto - anthraquinone, which is then methylated or ethylated with dimethyl or diethyl sulphate or butylated with butyl iodide. 2-Acetylamino-3-methyl-, ethyl-, and butyl-sulphones are obtained by oxidation of the corresponding alkyl sulphides with potassium permanganate in acetic acid.  They are converted to leuco-disulphuric half-esters with iron and chlorsulphonic acid in alpha-picoline.
Patent GB-1128630-A (GB)
Title: Control systems for industrial trucks
Inventor: DANNETTELL ALAN CREESE
IPC: B60L11/18
Filed: 1966-03-30
Abstract: 1,128,630. Control of D.C. motors. EATON YALE & TOWNE Inc. 30 March, 1966, No. 14044/66. Heading H2J. For driving an industrial truck, transistor switches 15, 16 are closed repetitively at the beginning of each cycle of constant frequency oscillator 17 to apply discrete pulses from battery 13 to motor 10. The transistor switches are opened at an adjustable time during each cycle as determined by the positioning of pedal 23, thereby to regulate the duty cycle of the pulses. An automatic current-limiting control is provided by resistor 20 which feeds back a signal through amplifier 21 to trigger unit 22. The pedal 23 also adjusts potentiometer 34 which increases the gain of amplifier 21 in proportion to the duration of the pulses, so that the current-limiting action is reduced at low speeds, a desired current-limit being imposed progressively at the higher speeds. Each oscillator pulse triggers a pulse width modulator 28 for a period determined by adjustment of potentiometer 29 which is coupled to pedal 23. The variable-duration pulses are passed through amplifier 30 to operate the switching transistors 15, 16. When the unit 22 operates, it applies a feedback pulse to the modulator 28 for terminating its operation in advance of its normal period. To protect against short-circuiting of any of the power transistors 15, 16, the waveform of the power pulses applied to the motor are compared with the square waveform from the modulator 28, and, upon a constant direct-current signal being detected, unit 18 responds to disconnect the battery from the system. The transistors 15, 16 may be by-passed for connecting the motor directly to the battery. The modulator 28 comprises a pair of transistors arranged to provide a monostable multivibrator having a variable time delay determined by an R.C. circuit including the potentiometer 29. The voltage across resistor 20 is amplified by two transistor stages, and the amplified signal is applied to a Schmitt trigger circuit which responds at a value of current determined by the setting of the potentiometer 34. A positive pulse from the Schmitt trigger is applied to the base of a transistor in modulator 28 to reset the modulator and terminate its pulse. A shortcircuit condition of one of the power transistors is detected by a transistor receiving signals both from the pulse modulator and from the power switches, these signals being normally 180 degrees out-of-phase so that the transistor receives a negative potential. The negative pulses are disconnected in the event of a fault so that the transistor becomes non-conductive to reverse a flip-flop circuit. Control relays are then de-energized to disconnect the battery from the motor.
Patent GB-139704-A (GB)
Title: Improved self-acting warp tension regulating motion for looms for weaving
IPC: D03D49/06
Filed: 1919-06-04
Abstract: 139,704. Scholes, P. June 4, 1919. Letting-off warps.-A selfacting warp-tension regulating mechanism comprises a feeler device a and a pulley device i, r which is connected by a rod h to a lever f operated by the feeler lever c and is adapted to be moved to varying positions between a counterbalance lever j and a lever k having attached thereto the usual chain or flexible connexion m coiled around the warp beam. As the warp on the beam diminishes in diameter, return movement of the feeler lever is prevented by a pawl p thereon engaging ratchet teeth on a fixed plate d. The pulley device comprises a pulley i movable on the lever j and two larger pulleys r on the same stud movable on the lever k. The lever f is pivoted to the feeler lever c and carries a spring or gravity actuated catch e<1> normally engaging a lug e<2> on the lever c. When it is required to reverse the loom, the catch e<1> is released and the pulleys are moved to the right to rest in the curved end k<1> of the lever k. The catch e<1> may be released periodically by hand or by a connexion from the loom or dobby, the pulleys being moved to the right to release the tension on the warp by a bell-crank lever device connected to the rod h and operated by a pedal or by the dobby. When a flexible connexion m is provided at each end of the beam, they are suitably interconnected through a shaft to be controlled by one lever k.
Patent GB-164228-A (GB)
Title: Improvements in or relating to devices for gripping or holding the work in drilling
IPC: B23B47/28
Filed: 1920-05-21
Abstract: 164,228. Wildy, D. W., and Wildy, D. W. May 21, 1920. Drilling.-In a jig for cross-drilling rods, pins, spindles, bars, tubes, spheres, circular articles, &c. of the kind in which the work is secured in transverse slots in a hollow body having a drill passage in its end by a screw-adjusted member movable longitudinally of the axis of the drill passage, the movable member is adjusted by a separate screwed cap or collar engaging a screw-thread in the hollow body. The work z is passed through a hollow body a and is clamped centrally against the flat upper edge of the slot by a V-recessed shouldered plug b, which is keyed at a<1> to the body and is adjusted by an internally-flanged screw cap d. Interchangeable flanged drill bushes f are screwed in the end of the body and may project either as far as or beyond the flat edge of the slot. The plug has a tapered stem c by which it may be secured in the tail spindle of a lathe or in a base g so as to rest on a bench in drilling machine. A hooked rod h, Fig. 6, furnished with a scale co-operating with a line on the body acts as a longitudinal stop for the end of the work. It is secured by a nut h<2> in a groove h<1> in the body and may also be angularly adjustable to suit the diameter of the work so as to engage it axially. In cases where the hole to be drilled is at a considerable distance from the end of the work, a measuring rule may be used in conjunction with the line on the body. The gripping surface of the plug may be curved or straight and the edge of the slot may be curved or V-shaped. In drilling spherical work the underside of the drill passage in the bush may be countersunk to facilitate clamping. For drilling closely adjacent holes a bush provided with several passages may be used. The apparatus may also be used for drilling triangular or square work.
Patent GB-921644-A (GB)
Title: Method of and apparatus for detecting blood in eggs
IPC: G01N33/08
Filed: 1961-04-19
Abstract: 921,644. Testing eggs. F.M.C. CORPORATION. April 19, 1961 [April 27, 1960], No. 14079/61. Class 28 (2). [Also in Group XL (b)] In an apparatus for detecting the presence of blood in eggs E beams of light B1, B2 are passed alternately through the eggs, one beam B1 serving as a reference beam and having a wavelength (597 mÁ) such that it is not selectively absorbed by blood and is also substantially unaffected otherwise by egg opacity and the other beam 32 serving as a measuring beam and having a wavelength (575 mÁ) such that it is selectively absorbed by blood and is also affected by egg opacity. A photo-cell V8 converts the transmitted light beam into signal pulses and supplies its output through a filter so as to produce an alternating current signal determined by any amplitude difference in the pulses. The apparatus is initially set up with a " standard " non-bloody egg of maximum opacity by adjustment of the reference beam B1 by a dimming gate 35 to achieve equality of the transmitted light intensity. Thus, in the presence of any clear egg the transmitted beam B2 is greater than the reference beam B1 and results in ah alternating signal of one phase, and in the presence of any bloody egg the transmitted beam B2 is less than the reference beam B1 and results in an alternating signal of opposite phase. The alternating signal is applied to a control circuit C (illustrated in detail in Fig. 2, not shown), which includes a phase-sensitive rectifier supplied with a reference alternating pulse signal derived from a photocell V9, and produces for a clear egg an output D.C. potential positive of a reference level and for a bloody egg a potential negative of the reference level. A trigger circuit responds to a negative potential only and produces a signal which is transferred by a unit TR to a memory unit M which causes activation of an egg ejector 17 when a conveyer 10 transporting the eggs brings the relevant egg to a reject station 13. Cam-operated switches 14-16 driven from the conveyer synchronize the operation of control circuit C and transfer unit TR. The light beams B1 B2 and a reference beam B3 for photo-cell V9 are derived from a common light source 24 with the aid of a rotary shutter 20 driven by motor 21. Filter 36 selects the wavelength of beam B1 and filter 37 forming part of a filter and mirror combination selects the wavelength of beam B1. Specification 790,684 is referred to in connection with the egg conveyer.
Patent GB-342226-A (GB)
Title: Improvements in and relating to rotary cutters for wood working machinery
IPC: B27G13/08
Filed: 1930-05-08
Abstract: 342,226. Woodworking cutter-blocks. CHAPLOW, R. M., 27, Romney Road, Kendal, Westmorland. May 8, 1930, No. 14116. [Class 145 (i).] The blades 8 of a rotary woodworking cutter, particularly a chamfering cutter, are sunk in slots in the block 1 which is of approximately the same profile as the blade, and are held therein by a cover plate 6, also grooved to take the top edge of each blade and fitting by the projector 16 into a recess 5 in the block. The cover plate is held to the block 1 by set screws 13 and chip grooves may be formed in the face of the block alongside the blades.
Patent GB-1391898-A (GB)
Title: Heart pacers
Inventor: GOLDBERG H
IPC: A61N1/372
Filed: 1973-03-23
Abstract: 1391898 Heart Pacemakers AMERICAN OPTICAL CORP 23 March 1973 [24 March 1972] 14243/73 Heading A5R An implantable heart pacemaker comprises a circuit including a multi-turn potentiometer operable by a shaft to change the pulse rate continuously, a magnet rotatably mounted in a magnetically permeable cam and coupled to the shaft so that the shaft is rotated by rotating the magnet, and a magnetically permeable hermetically sealed package encapsulating the circuit and alowing rotating magnetic flux lines which pass through the package to cause the magnet to rotate. Rotatable for adjustment of the repetition rate of the generated pulses, a magnet fixed to the shaft, and a magnetically permeable package enclosing the pulse generator so that rotating flux lines passing through the package may rotate the magnet and the shaft. As shown in Fig 1 the pulse generator is enclosed in a magnetically permeable container 12 of, e.g., brass. The container 12, and preferably also a battery power supply (not shown), are potted in an epoxy resin contained in silicone rubber. An opening 14 is provided for a plug which makes contact with two connectors 18. As shown in Fig 3, an annular magnet 30, diametrically magnetised, is mounted on a rotor 34, journalled in a container 20. Rotor 34 has a land-and-groove connection with the shaft 16 of a potentiometer (not shown) forming part of a generator (not shown) of stimulating pulses. The potentiometer controls the pulse recurrence frequency and may be of the multiturn type. The pacemaker is inserted under the patient's skin and the magnet 30 may be rotated by an external rotating magnetic field, generated e.g. by rotation of a similar magnet on the outer surface of the patient's skin in order to vary the pulse repetition rate. Accidental movement of the magnet 30 is prevented or minimised by a soft iron bar 40, which attracts magnet 30 enough to prevent displacement, but is overcome by the stronger external magnetic field. In a modification, (Fig 4, not shown) the second magnet is included in the encapsulation and is rotated by a needle-like tool inserted through the patient's skin.
Patent GB-1498075-A (GB)
Title: Locks and keys
IPC: E05B19/02
Filed: 1975-04-08
Abstract: 1498075 Making keys NEIMAN SA 8 April 1975 [18 April 1974] 14347/75 Heading B3A [Also in Division E2] A key has a stem 4, Fig. 1, for introduction in a lock and a holding head 5. The key has planar portions 1 and 2 extending the length thereof and connected by a portion 3, Fig. 2. Notches 6 are formed in the stem 4. The key may be formed by a single stroke of a press. In a modification inclined flat portions 1<SP>1</SP>, 2<SP>1</SP>, Figs. 3, 4 and 5, are connected by a curved portion 3<SP>1</SP> and notches 6<SP>1</SP> are provided.
Patent GB-1317449-A (GB)
Title: Photoelectric sensing device
IPC: B23Q35/40
Filed: 1970-03-25
Abstract: 1317449 Photo-electric sensing device E SICK 25 March 1970 [2 April 1969] 14369/70 Heading G1A In a vibration proof photo-electric sensing device for monitoring an object on a machine, a light source, a photo-electric detector 6 and a first image optical element 5 are fixed with respect to one another in a unit 3, as shown. The unit 3 is resiliently suspended by springs 7 with respect to the machine in such a way that the optical axis of the first imaging optical element 5 is always parallel or coincident with the optical axis of a second imaging optical element 4, as shown.
Patent GB-1176146-A (GB)
Title: Improvements relating to Heating Element Assemblies for Electric Furnaces
Inventor: SEVERS MICHAEL JOHN
IPC: H05B3/64
Filed: 1966-03-31
Abstract: 1,176,146. Electric furnaces. GENERAL ELECTRIC CO. Ltd. 9 March, 1967 [31 March, 1966], No. 14402/66. Addition to 861,258. Heading H5H. An electric resistance furnace having a main heating element assembly of generally cylindrical cage form as claimed in Claim 1 of British Patent 861,258 has one or more additional heating element assemblies of graphite resistor rods located at one or each end of the main cylindrical cage. The additional heating element assembly 30 at one end comprises graphite resistance rods 32 joined in pairs at their outer ends by graphite bus-bars 33 and at their inner ends by connectors 34, the assembly being mounted by insulating bridges 36 on insulating parts 37. The terminal connections are made at 38 to three bus-bars 33. The additional heating element assembly at the other end of the cage (Fig. 3, not shown) comprises two sets each of four parallel graphite rods connected at one end to a graphite bus-bar on an insulating post and in pairs by terminal connectors at the other end. Both additional heating element assemblies are planar or part-planar. The resistor rods of the main cage and/or of the additional heating element assemblies may be solid or tubular and may be of circular, rectangular or other cross-section or may be of helical spiral form or longitudinally slitted to provide elongated current paths, or may comprise wide slats cramped into contact with the bus-bars by clamping plates. The main cage and the radial additional heating element assembly are mounted on one end wall of the chamber and the parallel additional heating element assembly is mounted on the inside of the removable lid.
Patent GB-696220-A (GB)
Title: Improvements in or relating to lamp holders for double ended electric lamps
Inventor: EVERITT LAURIE HAROLD RAYMOND
IPC: H01R33/08
Filed: 1950-06-09
Abstract: 696,220. Lamp holders. ASHLEY ACCESSORIES, Ltd. June 11, 1951 [June 9, 1950], No. 14412/50. Class 38 (i). A holder for a double-ended lamp permits removal or replacement of the lamp by manipulation of only one of the pair of holders. The holder comprises an open topped insulating body 10 pivotally mounted by projections 25 thereon engaging bayonet slots 26 in the arms 27 of a bracket 28, the body slidably housing a socket member 12 having finger-gripping lugs 13 extending through slots 14 in the body and controlled by springs 19. The springs 19 surround extensions 18 of contact plungers 16 which have a clearance 17 between themselves and the socket 12, and are connected by terminals 21 to the supply. A pair of straight slots 22 in the socket co-operates with the bayonet lamp cap pins to align the lamp. To remove a lamp it is pushed towards the " far " holder A, Fig. 4, against the springs 19 and the socket 12 of the " near " holder B is retracted by pulling the lugs 13, the holder B then being swung downwardly away from the lamp which may then be removed from the holder A. The holders are automatically returned by an abutment 30 therein co-operating with a leafspring 29 on the bracket. In a modification, Figs. 5-7 (not shown), the leaf-springs 29 are replaced by coil springs surrounding the projections 25 and the bayonet slots 26 are replaced by simple holes. In a further modification, Figs. 8-10 (not shown), the springs 29 and lugs 13 are omitted and pivotal movement of the body 10 about the projections 25 is limited by a rib on the top of the body engaging the underside of the bracket 28. In this construction, lamp removal is effected by pushing the lamp a small distance into the " far " holder to disengage the projections 25 on the " near " holder from the bayonet slots 26 thereby removing one lamp end together with its holder. This holder is then taken off the lamp and the lamp removed from the " far " holder. This manner of removal permits the two holders to be .mounted closer together.
Patent GB-213469-A (GB)
Title: Improvements in or relating to wire spring mattresses and the like
IPC: A47C23/28
Filed: 1923-06-01
Abstract: 213,469. Smith, J. M. June 1, 1923. Mattresses.-In spring mattresses two non-connected and non-overlapping mattress meshes b are arranged side by side in one frame a. Separate tensioning means e are embodied in the mattress frame. A support a<2> for the adjacent ends of the end rails d is fitted.
Patent GB-257675-A (GB)
Title: Electric regulators
IPC: H02P9/24
Filed: 1925-06-05
Abstract: 257,675. British Thomson-Houston Co., Ltd., and Parry, R. D. June 5, 1925. Regulation, automatic. - In automatic regulators of the vibratory type the vibratory contact is actuated through a connecting member damped by mechanical inertia or by eddy-current reaction, in order that quick movements of the regulating member may be effected and slow movements ineffective. The figure shows one form of apparatus according to the invention for regulating the voltage of an alternating current generator 11 by periodically putting resistance 17 into and out of the field circuit of an exciting machine 14. The main vibratory contact 21 is actuated jointly by a line potential solenoid 27 and an exciter voltage solenoid 32. The core of the exciter voltage solenoid is linked to a heavy disc 29 turning freely on the end of a lever 28, which thus communicates any movements too quick to overcome the inertia of the disc. To obtain the same result by eddy-current reaction the end of the lever 28 is formed as a copper sector lying between the poles of a magnet attached to the solenoid-core 31. In a modification the exciter solenoid acts through the damped connection directly upon the vibratory contact lever, and the line solenoid acts upon a lever which is restrained by a dash-pot and is jointed by a one-way hinge to the contact lever. In a further modification separate co-operating contact levers are employed, one for each solenoid. The invention is stated to be applicable for controlling the voltage, current, or power of a generator, or the speed of a motor. Specifications 28190/08, and 18497/14, [Class 38 (v), Electric switches &c.], are referred to.
Patent GB-720971-A (GB)
Title: Stabilization of polystyrene
IPC: C08K5/107
Filed: 1953-05-26
Abstract: The resistance to weathering and ultra-violet light of polystyrene is increased by the addition of 0.01 to 5 per cent of a diaryl ester of resorcinol.  Resorcinol dibenzoate and disalicylate are specified and the ester may be incorporated in the polystyrene by film-casting of milling, or during manufacture.