baber/WOPTO huggingface dataset:
Patent GB-1357941-A (GB)
Title: High speed frequency shift keyed transmission system
IPC: H04L27/10
Filed: 1971-05-21
Abstract: 1357941 Frequency modulated transmitters and receivers AMERICAN CHAIN & CABLE CO Inc 21 May 1971 [22 May 1970] 16476/71 Headings H3A and H3R An F.S.K. transmitter includes: a pulse oscillator whose p.r.f. is determined by the time constant of a resistance-capacitance circuit R1, R2, C1, Fig. 3, the resistance component of which is variable by means of a switch S1 controlled by the data to be transmitted; and a circuit for converting the pulse output to a sinusoidal one. In operation, with switches S2, S3 open, capacitor C1 charges until amplifier 22 produces an output pulse which closes switches S2, S3. Capacitor Cl now discharges until the termination of the amplifier output pulse reopens the switches to allow capacitor C1 to recharge. An f.m. receiver, Fig. 4 (not shown) includes a zero crossing detector (43) which produces a train of pulses for triggering a demodulator, Fig. 5, similar in form to the oscillator. The triggering pulses close S1, S3 briefly to discharge capacitor C1 until a threshold determined by R4, R5, R6 is reached. When the input frequency is high, this threshold is reached at the time of arrival of a trigger pulse, and the output pulses from the amplifier are short. At the lower frequency the threshold is reached prior to the arrival of the next trigger pulse, and the amplifier output closes switches S2, S3 resulting in a long output pulse which lasts until the next resist pulse closes S1.
Patent GB-153246-A (GB)
Title: Improvements in or relating to self-driving prime movers
IPC: F03G7/10
Filed: 1920-06-18
Abstract: 153,246. Williams, H. June 18, 1920. No Patent granted (Sealing fee not paid) Self-driving machines.-A first motion wheel a geated by a train to a fly-wlieel u is driven by a ratchet-lever yz loaded by a ball 15 which ultimately drops off to let the lever rise and receive another ball from a series behind a rotary trap 19. A secondar train of wheels ends in an arm 26 designed to raise each spent ball to its potential position.
Patent GB-757392-A (GB)
Title: Preparation of novolak resins
Inventor: FRASER DONALD ALEXANDER
IPC: C08G8/28
Filed: 1953-06-16
Abstract: A novolak resin is made by condensing a molar excess of phenolic compounds containing phenol, meta-cresol or meta-ethyl phenol with formaldehyde (formalin or paraformaldehyde) in the presence of a salt of a divalent electropositive metal with an organic acid, which salt is at least partially soluble in the reaction mixture and the pH of the reaction mixture being between 4 and 7, until there is no free formaldehyde left in the reaction mixture, raising the temperature of the mixture while allowing volatile materials to distil therefrom to a temperature above 100 DEG  C. at which a further condensation takes place, allowing the further condensation reaction to proceed to completion and the water thus formed to distil from the reaction mixture, removing any unwanted unreacted phenolic compounds and cooling the reaction mixture to give a solid product.  The preferred ratio of phenolic compound/formaldehyde is from 1.3:1 to 2:1.  Other phenols may be mixed with the specified ones.  Commercial xylenols containing m-substituted phenols can also be used.  Catalysts specified are Ba, Sr, Ca, Mg, Mn, Zn, Cd, Co, Pb, Fe, Cr, Sn and Ni salts of organic acids, e.g. benzoic, formic, acetic and lactic acids, and are used in amount, e.g. of 0.1 to 5.0 per cent by weight of the phenol present.  The process is effected by mixing the phenol with the aldehyde, adding the catalyst thereto and gently heating the mixture until reaction occurs.  Where formalin is used the initial reaction is controlled by heating under reflux conditions, but where non-aqueous reactants are used control of heat input is necessary to prevent too great a rate of temperature increase. For the further condensation a temperature of 150 DEG  to 160 DEG  C. is preferred. Many examples are given showing comparative figures of moulding tests on the novel and conventional novolaks.
Patent GB-204369-A (GB)
Title: Improvements in the mixing of steam with the combustible charge of internal combustion engines
IPC: F02M25/022
Filed: 1922-06-14
Abstract: 204,369. Darier, H. E. F. June 14,1922. Charge, moistening.-In apparatus for supplying superheated steam to the charge, the water is supplied to the vaporizer through an atomizer which injects the water by way of impulses, air being simultaneously injected also by way of impulses. In the form shown in Fig. 3, the water is supplied at ordinary pressure through a pipe arranged along the exhaust pipe and communicating with a space 15 around an adjustable hollow needle valve 13 through which compressed air is delivered during the suction periods of the engine. The air may be supplied from a small compressor, preferably positively driven by the engine. The water is injected by the air into a vaporizer 18 which communicates with a superheating coil 19 the outlet 22 of which is connected to the induction pipe. The vaporizer 18 and coil 19 are mounted in a casing 20 inserted in the exhaust pipe. Means may be provided by which the proportions of the atomized water and air are changed in accordance with changes in the composition of the mixture. These means may consist of a rotary ported disc 24 controlling air inlets 23 in the end wall of the vaporizer, the disc being operated by a rope from the lever controlling the composition of the mixture. In modifications, the water is supplied to the atomizer under pressure, either a small-force pump being used, or the air-compressor being arranged to put the water in the tank under pressure. In a further modification, the admission of the mixture of water and air into the vaporizer is controlled by the exhaust gases, each rush of the gases actuating a flap valve to the spindle of which is attached a spring-returned rotatable valve situated between the atomizer and vaporizer.
Patent GB-903070-A (GB)
Title: Method and apparatus for joining thermoplastic parts by welding
IPC: B23B5/16
Filed: 1961-05-05
Abstract: 903,070. Non-rotating work lathes. FARBWERKE HOECHST A.G. May 5, 1961 [May 5, 1960], No. 16518/61. Class 83 (3). [Also in Group VIII] Apparatus for shaping a thermoplastic strip to form a filler rod used to weld thermoplastic parts together (see Group VIII), comprises a guide 2 through which the strip is passed and which has a central recess corresponding to the crosssectional shape of the strip. A hollow shaft 4 is rotated so that an adjustable cutter 7 mounted on a face-plate 6 integral therewith cuts the strip to the desired diameter and the finished rod passes through the bore of the shaft 4.
Patent GB-516569-A (GB)
Title: Improvements in and relating to diaphragm valves
IPC: F16K31/122
Filed: 1938-06-02
Abstract: 516,569. Fluid-actuated valves. SAUNDERS VALVE CO., Ltd., and SAUNDERS, P. K. June 2, 1938, No. 16520. [Class 135] In a fluid-pressure actuated valve of the type wherein a diaphragm 3, directly connected to a piston 17 of larger cross-sectional area than the free surface of the diaphragm, seats on a concave weir seat 2 intersecting a straight-through bore, and is clamped over an opening in the body wall by a bonnet 4, the bore 10 for the piston 17 is formed in this bonnet, and to reduce further 'the overall height, the removable top 13 may be domed and the piston 17 may be conical with a flange 18 for receiving a cup leather 19. The diaphragm is supported in the open position by fixed fingers 6 and in the closed position by toes 7, and the closing movement of the piston is limited by the flange 18 striking a ledge 22, while its opening movement is limited by the toes 7 engaging a ring 21 integral with the fingers 6 which also serves to support a loading spring 44. A tool may be inserted through an aperture 23 to. adjust the piston on the threaded end of the spindle 15. In small valves the ring 21 may be omitted, the spring 44 made conical to rest on the ledge 9, while according to the Provisional Specification a castellated boss depending from around the actuating fluid inlet 14 serves as an upper stop for the piston which is held to the spindle 15 by a nut and is adjusted thereon by inserting shims. In another modification, the spring 44 is replaced by a cylinder depending from the piston 17 and surrounding a fixed piston on the end of a central hollow stem connected to the inlet 14 and passing through a packing gland at the centre of the piston 17. The inlet 14 is in this case permanently connected to a source of pressure fluid, which; through lateral. apertures in the stem immediately above the fixed piston, acts on part of the underside of the piston 17. To close the valve, pressure fluid is admitted to the whole of the upper surface of the piston 17 through another inlet in the top 13. Specifications 321,892, [Class 135], 362,084, 434;664, 434,665, 434,684, 439,701, and 442,790 are referred to.
Patent GB-145442-A (GB)
Title: Improvements in or relating to magnetic separators
IPC: B03C1/035
Filed: 1920-06-18
Abstract: 145,442. Krupp Akt.-Ges. Grusonwerk, F. Aug. 2, 1918, [Convention date]. Magnetic separators.-A magnetic separator in which the material to be separated is subjected to the action of two or more magnetic zones has means for separately adjusting the inclination of the feeding-table for each zone. The several feeding-tables 16, 17, 18 between the respective pairs of pole pieces 10/11, 12/13, 14/15 are pivotally attached to slots 22, 23, 24 so as to be capable of vertical adjustment. By altering the inclination of each table, the speed of the material passing through each zone may be varied. The separator is pivoted at 25 so as to be adjustable as regards inclination by means of the hand-wheel 26.
Patent GB-1499757-A (GB)
Title: Hydrogenation of nitrobenzoic acids
Filed: 1975-04-22
Abstract: 1499757 Aminobenzoic acids UOP Inc 22 April 1975 16542/75 Heading C2C Aminobenzoic acids are obtained by hydrogenating the corresponding nitrobenzoic acid at a H 2  pressure of not more than 600 p.s.i.g., preferably less than 100 p.s.i.g., and a pH of from 5 to 7, in the presence of a hydrogenation catalyst, (preferably at 50 to 100 C.), and in a solution consisting essentially of the nitrobenzoic acid dissolved in an aqueous solution of from 0À95 to 1 equivalent of an alkali metal hydroxide, carbonate or bicarbonate. Preferred catalysts are noble metal catalysts.
Patent GB-1393563-A (GB)
Title: Circular saw with peripheral drive
IPC: B28D1/04
Filed: 1972-04-11
Abstract: 1393563 Circular and annular saws G HAMMERSCHLAG 6 April 1973 [11 April 1972] 16568/72 Heading B5L A saw machine has a circular saw blade 1, Fig. 1, driven at its periphery by a chain 4 having inner and outer links connected by pins, the saw blade having teeth, those teeth which go in between the inner links doing this with little clearance, and those teeth which go in between the outer links carrying cutter elements wider than the saw blade but still capable of passing with clearance between the outer links. The frame of the machine carries a segment 13 having a concave part-cylindrical area concentric with the saw blade and the pins of the chain 4 carry rollers 12 which do not mesh with the saw teeth but support the saw radially by rolling on the concave area of the segment 13. In one embodiment, for cutting stone a plurality of blades 1 are supported on their inner peripheries by grooved rollers 9 and are driven by a multi-strand chain 4 having inner links 6, Fig. 2, and outer links 7 carried by pins 11. The chain is guided by rollers 12 on the pins 11 running in grooves in the partcylindrical member 13, Fig. 1, and is driven by sprockets 18, 19, 20. The blades 1 are supported in a frame 10 and the workpiece 15 is fed to them on a slide 17 rasied by a table 16. Alternatively the frame may move relative to the workpiece. The blades have cutter elements 8. In an embodiment, for cutting wood the blades 1, Fig. 4, which may be discs or annular are supported by chains 4a, 4b at least one of which is driven. The part-cylindrical support members 13 for the chains have gooves for guiding the rollers 12 of the chains and these grooves extend around the convex ends of the members 13. In either embodiment, the rollers 12 may be grooved to engage with guide rims on the members 13.
Patent GB-1482181-A (GB)
Title: Preset positioning device
IPC: H03J1/06
Filed: 1974-04-16
Abstract: 1482181 Cams; linkwork AUTONNIC Ltd 3 April 1975 [16 April 1974] 16655/74 Heading F2K [Also in Divisions E2 and H3]  A preset positioning device for a tuner or control of machine tools has an actuator 85, 70, Fig. 1, selectively operable to move a reference pin 44, Fig. 3, to store a set position of a locator pin 42 and to move the locator pin 42 to take up a preset position stored by the reference pin 44. The actuator has a comparator 90 with prongs 91, 92 arranged to engage both pins 42, 44 and cam them into an aligning throat 93. In the tuner shown, Figs. 1 and 3, by pulling a button 85 a lock arm 60 is slid outwardly relative to a push rod 70 so that a bridge 66 disengages an end of a reference lock 62. This releases clamping of a reference arm 57, by a hook 59, to a cover 22 so as to enable the arm 57 and the reference pin 44 to pivot about 58. A latch 86 holds the button in the forward position. Now a required station is tuned by rotation of a tuning spindle (116, Figs. 2 and 4, not shown) which drives via a friction drive (115, 112) and gears (111, 106) a tuning core carriage (103). This correspondingly positions the pin 42 of a tuning bar 40 which is attached at (104) to the carriage. On pressing the button, cam shoulders 76 engage a clutch operator (121) which declutches the friction drive. As the push rod moves in prongs 91, 92 and the throat 93 of a plastics comparator 90 guide the reference pin 44 to align it with the tuning bar pin 42. Further pressing of the button causes lock arm 60 to slide inwardly to the position shown in Fig. 3 so as to lock the reference arm 57 and pin 44 in the present tuning position. This preset tuning can be returned to by pressing the button which causes the comparator 90 to guide the pin 42 and the tuning bar to the present position of the pin 44.
Patent GB-767138-A (GB)
Title: Improvements relating to the supplying of fuel to aircraft
Inventor: COOK HENRY
IPC: B64D39/02
Filed: 1954-06-04
Abstract: 767,138. Supplying fuel to aircraft. ROLLSROYCE, Ltd. June 3, 1955 [June 4, 1954], No. 16679/54. Class 4. A method of operating an aircraft having power plant of the gas turbine thrust reaction type arranged to be supplied with fuel carried by the aircraft and to produce lift on the aircraft independently of lift generated by forward flight, includes connecting the aircraft to a ground-borne fuel supply at least up to the moment when the aircraft becomes airborne, fuel being supplied from said ground borne source when the aircraft is grounded and the power plant is consuming fuel. The ground borne source may be still connected when the aircraft is rising vertically. In Fig. 4, one end of a supply cable 21 is attached to the aircraft and the other end is secured to the hollow shaft 17 of a drum 22 on which the cable is wound. The hollow shaft communicates with the cable by a passage 20, and with the fuel supply by orifices 16A and a conduit 16. The end of the cable, when released from the aircraft, descends by parachute. A motor driven shaft 24 is adapted to rewind the cable onto the drum. In Fig. 5, the cable is replaced by piping 28, coiled when the aircraft is on the ground. The piping comprises a series of straight pipes joined rotatably by right angled pipe bends. The aircraft may take off with less than its full fuel supply, the remainder being transferred from the ground after take-off.
Patent GB-548940-A (GB)
Title: Improvements in or relating to fruit pitting mechanism
IPC: A23N4/08
Filed: 1940-06-04
Abstract: 548,940. Stoning fruit. STEVENS, A. H. (Lindsay Ripe Olive Co.). June 4, 1940, No. 16714. Divided out of 548,937. [Class 28 (ii)] Olives or other fruits roll down two parallel shoots 100 behind spacers 130, (see Specification 548,937), are engaged by cam-operated members 193 which hold them against the spacers, and are carried between dies 265 and stone-ejecting punches 241, whereupon the members 193 are retracted and the spacers, carried by a chain 160, pass tangentially on. The dies and punches are slidably mounted in two rotating drums 200 and are disposed alternately in each drum, being staggered so that each punch is opposite a die. Stationary cam drums 210 have cam grooves 212, 213 which impart to the dies and punches respectively the following movements:-A punch, passing through a small aperture 208 and a large aperture 209 in a U-shaped trough 207 formed on a disc 205 rotating with the drums 200, advances to spear an olive, and then a die advances to engage it from the opposite side, as shown in Fig. 5, a circular knife 270a slidingly disposed within the die cutting into the olive. The die than advances further, pushing the olive minus the stone through the aperture 209, the punch and knife meanwhile remaining stationary so that a space is formed in the die bore for the reception of the ejected stone, as shown in Fig. 6. The knife (which is controlled by a cam separate from the cam groove 212 which controls the die) and the die are then retracted, leaving the olive impaled on the punch; an enlargement 315 on the punch retains the olive thereon. Retraction of the knife creates in the die bore a vacuum which ensures retention of the stone in the bore. As the die retracts a plunger 272 ejects the stone which falls into a hopper 354. The punch is then retracted, stripping off the olive against the inside of the flange 207 whence it falls into a hopper 350 or on to a travelling belt. One or more rotating star wheels 360 strip from the flanges olives which have adhered thereto. If an olive is presented with its longitudinal axis across the die and punch, the punch penetrates only part of the way into the olive, the knife retains the olive, and the olive is ejected into the stone-hopper 354; springs 267,277 allow yielding of the die-knifeplunger assembly, and the punch itself is resilient so that it will spring rather than break if a stone deflects it. Specification 548,939 is referred to.
Patent GB-439573-A (GB)
Title: Improvements in switchgear specially applicable to motor starters
IPC: H01H83/12
Filed: 1934-06-06
Abstract: 439,573. Automatic circuit-breakers; controllers. COX, F. B., 65, Fleet Street, Liverpool. June 6, 1934, No. 16780. [Classes 38 (iii) and 38 (v)] A releasing member, movable under gravity or by a spring to release a contact-retaining device, is held against release by automatic means controlled by potential or current variation and is set by movement of the switchoperating handle in closing the switch. The member has connected to it a cam, toggle, or equivalent, engaging the retaining means during the release movement so that, when the switch has been closed and the member set, if the operator returns the handle slowly and retards the release movement of the member, release of the retaining device is ensured by the cam or toggle without the use of percussive action such as is described in Specifications 264,552, [Class 38 (iii)] and 348,590. As applied to the switch shown in Specification 412,246, the movable contact O co-operating with the contact P' is mounted on a shaft J carrying a detent 2 and an arm j <1> provided with a pin j<2> which engages in a slot e<4> of a link e<2>. The spring-controlled closing handle b<1> is fast on a shaft B carrying a portion D which, when b <1> is moved from the position of Fig. 2 to that of Fig. 1, engages a part e<6> on an armature E loose on the shaft B, whereby E is moved into engagement with a no-volt magnet F and closes the breaker. The parts are retained, subject to F being energized, by engagement of 2 with a detent 3, 5 pivoted at 4. The magnet F can be de-energized on voltage-failure or by the opening of its winding G by contacts of an overload relay R, whereupon a spring e<1> returns E to the position of Fig. 2, in which movement a cam 6 on E engages the detentarm 5 and moves 3 clear of 2 so that the spring 1 opens the breaker. If the armature E fails to be retained by the magnet, and the handle is returned slowly to the " off position, the return of E is similarly retarded by the interengagement between D, e‹, but the engagement of 6 with 5 ensures the release of the detent 2. In Fig. 3 (not shown), the armature E carries a disc on which is mounted a crank-pin which is linked to a detent lever retaining the detent 2. Rotation of the disc causes the pin to move to or over the dead-centre and impart a small releasing movement to the detent lever In Fig. 4 (not shown), a cam similar to that of Fig. 1 may push a retaining toggle for the movable contact over the dead-centre, a throwoff spring for the contact completing the action. In both the above modifications, the operating handle is shown mounted on the armature, and the contact is connected to the latter by an arrangement similar to e<2> in Fig. 1. The armature may alternatively be retained by a latch acted on by an overload coil or bimetal element, Fig. 5 (not shown).
Patent GB-297502-A (GB)
Title: Open grate for burning coke
IPC: F24B1/18
Filed: 1927-06-24
Abstract: 297,502. Tooby, C. F., and Langford, P. N. June 24, 1927. Addition to 270,476. Open fireplaces.-In the stove described in the parent Specification the areas of the openings leading to the chimney from the spaces above and below the fire-bars are controlled by a pivoted plate l, which can be adjusted to lie against the back of the chimney opening, or forwardly to lie against the front of the opening k, or intermediately. In the construction shown the back plate extends up to meet the front h of the chimney, and the up-draught opening k is formed in it. In the modified construction shown in Figs. 4 and 5 the rear flue is enclosed by a back plate p and sides q, the stove thus forming a self-contained unit which is placed in the fireplace, with the open upper end inserted into the chimney opening.
Patent GB-219027-A (GB)
Title: A device for winding yarn upon spools
IPC: B65H54/42
Filed: 1924-07-12
Abstract: 219,027. Maschinenfabrik Schweiter Akt-Ges. July 12, 1923, [Convention date]. Winding-machines; driving-arrangements.-In a machine for winding yarns upon a spool 90, Fig. 3, the drive is transmitted from a disc 6 to a friction roller 8 and thence by the axial friction of a pad 23, Fig. 5, to the spool 90. The friction roller 8 is carried by a ball bearing 19, 20 on a pin 18 attached to a lever 9, the said lever being mounted in bearings 7 in a frame 3 which is supported in bearings 2 between two supports 1', so as to be movable radially and axially relative to the disc 6. Weights 4 on a rod 3<1> tend to rock the frame 3 so as to keep the roller 8 in contact with the disc 6, while a spring 10 pulls the lever 9 to maintain the roller 8 against the spool 90. The lever 9 is held in the off position by a pawl 11 and a catch 15. The spool 90 is supported between the pad 23 and a bearing pin 17, which latter is mounted in a screwed sleeve 16<5> carried in a support 16 adjustable on the frame 14. The sleeve 16<5> is adjusted in position by a milled head 16' and then locked by a spring member 16<8>. The ball bearing 19, 20 permits the roller 8 to be rooked when changing spools.