baber/WOPTO huggingface dataset:
Patent GB-1074007-A (GB)
Title: System for frequency adjustment and frequency negative phase feed-back of a heterodyne receiver
Inventor: IRMLER RUDOLF
IPC: H03D3/00
Filed: 1964-07-02
Abstract: 1,074,007. Frequency modulation receivers; stereophonic radio receivers. ZENTRALLABORATORIUM FœR RUNDFUNKUND FERNSEHEMPFANGSTECHNIK. July 2, 1964, No. 27361/64. Headings H3R and H4L. In an FM radio receiver, which is described in relation to the reception of monophonic or stereophonic radio signals, the frequency swing of the incoming signal is modified by feeding from the demodulator a portion of the demodulated signal as a control signal to the local oscillator in addition to the normal D.C. automatic frequency control signal so that the passband required for the IF amplifier is reduced and with stereophonic signals is only that required for a monophonic radio signal. The control signal from the demodulator is fed back via an impedance converter and amplifier consisting of a transistor 11, Fig. 3, the normal A.F.C. being supplied from the collector via a resistor 16 to one side of a voltage variable capacitor 17 and the audio-frequency control signal being supplied from the emitter via an inductor 20 to the other side of the capacitor 17. A non-linear resistor 18 limits the range of the A.F.C.
Patent GB-646420-A (GB)
Title: Improvements in or relating to sealing devices for rotary shafts
IPC: F16J15/38
Filed: 1948-10-21
Abstract: 646,420. Stuffing - box substitutes. BRITISH THERMOSTAT CO., Ltd. Oct. 21, 1948, No. 27408. [Class 122(v)] In a sealing device for a rotary shaft wherein an annular seal ring carried by the shaft is urged by resilient means into rubbing contact with a fixed annular ring, the rotatable seal ring and a gland packing are disposed within a housing between which and the shaft is a coiled transmission spring arranged to provide a positive drive from the shaft to the housing and seal ring while the shaft is rotating in a predetermined direction. A seal ring 3 freely mounted on a shaft 2 houses a gland packing element 5 and is urged into rotating sealing contact with a fixed ring 1 by a spring 7 one end of which abuts the seal ring 3 and the other bears against the end 8 of a housing 6 driven from the shaft by a torque spring 12 fitting closely on the shaft and having one end 13 bent radially to engage a slot in the housing 6 so that when the shaft rotates in a predetermined direction the spring 12 grips it and drives the housing which drives the seal ring by means of indentations in the housing engaging corresponding keyways in the periphery of the seal ring. Outward axial movement of the seal ring is limited by inwardly directed lugs 11 on the edge of the housing engaging a shoulder 3a on the ring. In an alternative arrangement the drive between the housing and the seal ring is transmitted by a plate having tongues on its periphery that engage recesses in the seal ring and slots in the housing.
Patent GB-1471042-A (GB)
Title: Circuits for cerrecting deflection distortion in a cathode ray tube
IPC: H04N3/233
Filed: 1974-06-20
Abstract: 1471042 Cathode-ray tube circuits SONY CORP 20 June 1974 [25 June 1973] 27432/74 Heading H4T A vertical pincushion distortion correction circuit employs pairs of transistors 1, 2 and 4, 5 (Fig. 4) differentially switched by horizontal synchronizing pulses SH (see also Fig. 7A) to gate a vertical sawtooth wave SA supplied to the base of a transistor 3 on the occurrence of each pulse during the first (positive) portion of the wave SA (the cross-over point being determined by an adjustable voltage 8 and transistor 6) and on the occurrence of the intervals between each pulse SH during the second (negative) portion of the wave SA as shown in Fig. 7B. The gated waveform is then supplied via transistor 12 and capacitor 13, which removes the (60 Hz) sawtooth component, to a LC circuit 15, resonant of horizontal frequency, to produce the waveform SO (Fig. 7C) with which the sawtooth SA is combined in adder 16. The output of the latter then comprises the corrected vertical deflection waveform as shown in Fig. 8 which is modulated, substantially parabolically, at the horizontal scan frequency. Adjustment of the voltage source 8 allows non-symmetrical correction at the top and bottom of the raster to be effected. (Figs. 2, 3, 7D and 7E, none shown). In a modification of Fig. 1, Fig. 5 (not shown), the emitters of transistors 3 and 6 are supplied from a constant current source (20) so that a sawtooth current of opposite polarity to that flowing through transistor 3 flows through transistor 6. Thus, in the case of symmetrical distortions, if the constant current is I, a sawtooth current IAO of average value equal to I/2 flows in transistor 3 and a sawtooth current IBO of the same average value but of opposite polarity flows in transistor 6 as shown in Fig. 9A. The waveform of Fig. 9B, is then produced by the pulses SH which gate waveform IAO in the periods between such pulses and gate waveform IBO during the occurrence of the pulses. In a modification of Fig. 5, Fig. 6 (not shown), the base of transistor 6 is supplied from a fixed voltage source (21) and the adjustable voltage source 8 is instead connected via a resistor (22) to the collector of transistor 6. When symmetrical correction is required the opposite polarity sawtooth waveforms IA, IB (Fig. 10) are gated as in the embodiment of Fig. 5 whereas when non-symmetrical correction is required voltage source 8 is adjusted such that the magnitude of the sawtooth current waveform IB is either increased as shown by waveform I41 (for excessive bottom correction) or decreased as shown by waveform I42 (for excessive top correction).
Patent GB-666112-A (GB)
Title: Improvements in or relating to wheel construction
IPC: B60B3/00
Filed: 1949-10-26
Abstract: 666,112. Vehicle wheels. FIRESTONE TIRE & RUBBER CO. Oct. 26, 1949 [Dec. 22, 1948], No. 27481/49. Class 144 (ii). To vary the track width of a vehicle, a wheel comprises a dished reversible disc 11 having an apertured hub mounting portion 13 axially offset from a peripheral rim mounting portion 14, and a rim 12 having secured to its underside the bases 23 of a plurality of circumferentially-spaced, radially aligned channelshaped members 19 which are axially offset from the central radial plane of the rim and have means (20, 21) for selective attachment, to the wheel disc. As shown, the members 19 each have two apertured radially inwardly projecting lugs 20, 21 and are riveted to the rim base so that the lugs are offset by different amounts on either side of the central radial plane of the rim 12. For each of the two positions of the wheel disc 11 on an axle hub 10, the rim 12 has four possible positions relative to the centre line of the vehicle, viz: the inboard or outboard surface of the periphery 14 secured to the outer surface of either lug 20 or lug 21. A further eight positions of the rim 12 are made possible by the provision of one or more apertures (not shown) in the disc periphery 14 through which the lugs 20 or 21 may pass to allow the inner surfaces thereof to abut the periphery 14. Specification 534,355 is referred to.
Patent GB-1119275-A (GB)
Title: Improvements in or relating to a new process for preparing 6,6-ethylene steroid compounds
IPC: C07J75/00
Filed: 1966-06-20
Abstract: The invention comprises (i) a process for preparing 3-keto D 4- 6,6-ethylene-steroids by cyclization of a sreroid of partial formula <FORM:1119275/C2/1> and <FORM:1119275/C2/2> in which R is methyl or ethyl, R1 is a reactive ester group or an acyloxymercuryl group and R11 is a reactive ester group and (ii) compounds of the above partial formulae in which R1 or R11 is a halogen atom or a hydroxy, C1- 10 acyloxy, C1- 6 alkylsulphonyloxy or arylsulphonyloxy group and R is methyl or ethyl, and their preparation by reaction of a 6-unsubstituted-3-alkoxy-3,5 diene with a b -acyloxyethyl-mercuric acylate to form a 6-b -acyloxyethyl-3-alkoxy-3,5 diene, followed if desired by hydrolysis to the 6-hydroxyethyl-and/or 3-keto-D 4-derivative and conversion to the corresponding halide or sulphonate.  17b -hydroxy-3-methoxy and ethoxy-androsta-3,5 diene-17a -propionic acid lactones are prepared by enol etherification with trimethyl-or-triethyl-orthoformate.
Patent GB-820575-A (GB)
Title: Improvements in magnetic recording heads
IPC: G11B5/265
Filed: 1956-09-10
Abstract: 820,575. Magnetic tape-recorders LOEWE, S. Sept. 10, 1956 [Sept. 14, 1955], No. 27561/56. Class 40 (2). The magnetic head system of a magnetic tape apparatus consists of a recording and/or reproducing head 11 and 13 and at least one erasing-head 12, the heads being shaped narrower at their operational gap end than at the rear end so that when the heads are combined together they constitute a combination in which the gaps 14 are closely arranged beside each other. A number of different shaped heads are described.
Patent GB-385048-A (GB)
Title: Improvements in or connected with pumps and like devices
IPC: F04C2/344
Filed: 1931-10-05
Abstract: 385,048. Rotary pumps. LANGDON, A. G., 77, Derby Road, Northam, Southampton. Oct. 5, 1931, No. 27654. [Class 110 (ii).] A rotary, or semi-rotary, pump has a casing in which the bore is curved to give a substantially spherical or ellipsoidal chamber swept out by vanes 8 which slide radially in a slotted rotor 6. Packing of cork or other material 11 is inserted in grooves on the vanes. The rotor may be formed of gun-metal and cast with cored holes for lightening purposes. The vanes may have lightening holes drilled in them. Guides 9 are formed concentric with the inner casing wall to support the ends of the vanes. The pump may be of the semi-rotary type, and may be hand or power driven. A grease cap 16 is provided at one end of the shaft. A mounting bracket 20 is provided for supporting the pump structure.
Patent GB-245736-A (GB)
Title: An improved method of applying a plating of aluminium to iron and steel sheets and bands
IPC: B23K20/227
Filed: 1925-11-03
Abstract: 245,736. Trierer Walzwerk Akt.-Ges. Jan. 9, 1925, [Convention date]. Compound forms; sheets; bars.-Iron or steel sheets or bands 1 are plated with aluminium 2 by roughening both the iron and aluminium sheets, e.g. by sandblast, and passing the sheets with their rough surfaces 1<a> and 2<a> in contact through a cold rolling mill 3, 4. During rolling a temperature of 100‹ C. caused by rolling only is not exceeded. Plated metal strips may be composed of a number of layers.
Patent GB-635680-A (GB)
Title: Improvements relating to atomisers
IPC: B05B11/06
Filed: 1948-10-25
Abstract: 635,680. Spray-producers. UNIVERSAL METAL PRODUCTS, Ltd., and BIDDULPH, M. Oct. 25, 1948, No. 27667. [Class 69 (iii)] An atomizer for use with a bottle b or container comprises a moulded plastic body in two cylindrical portions a and d. The former is adapted to fit over the top of the bottle and the latter is provided with a piston e spring-loaded by means of i and guided by a screw f. A metal nozzle k is fitted into the body above the cylindrical portion a. Air from the cylinder d passes through into the nozzle by way of an aperture provided in the moulded body and liquid is drawn up into the nozzle by means of a tube m.
Patent GB-875126-A (GB)
Title: Improvements relating to hydraulic control systems
Inventor: FOWLER JOHN LAWRENCE
IPC: F15B20/00
Filed: 1956-09-10
Abstract: 875,126. Valves. FAIREY CO. Ltd. Dec. 10, 1957 [Sept. 10, 1956]. No. 27678/56. Class 135. An hydraulic control system for controlling the supply of emergency pressure liquid from an inlet pipe 11 to a jack 1 operating aircraft control surfaces, undercarriage &c. which is normally supplied with liquid from a pipeline 5 controlled by a valve 2 operated by the pilot's control member 4, comprises a control valve assembly consisting of tandem valves 16, 18 of which the former, loaded by a spring 28, is normally closed while the latter is normally open, and a hand lever 40, operation of which through a cam 41 and ball follower 42, first closes valve 18 and then opens valve 16. As shown, valve 16 is connected to jack 1 by a pipeline 15 incorporating a shuttle valve including a free piston 13 normally urged to the left of its cylinder 12 by pressure in pipeline 7. Any leakage of liquid past piston 13 escapes via pipeline 15 and a passage 30 in plunger 22 to the main return line 10, so preventing any pressure build-up in line 15. Upon failure of the main pressure supply operation of handle 40 first closes valve 18 to isolate line 15 from return line 10, and then opens valve 16 against spring 28 to allow the emergency power liquid to pass from line 11 to line 15, move shuttle piston 13 to the right and thus operate jack 1. The end of valve 16 forms a piston 43 working in a cylinder 44 connected by a line 47 to return line 10, so that any pressure build-up in the latter tends to maintain valve 16 closed. This arrangement only permits one-way emergency operation of jack 1, e.g. for operating landing flaps, but in a modification, Fig. 2 (not shown), two-way operation is permitted by omitting the shuttle valve and connecting line 15 directly to control valve 2.
Patent GB-458283-A (GB)
Title: Improvements in or relating to trousers
IPC: A41F9/02
Filed: 1935-10-08
Abstract: 458,283. Trousers. SIMON, S. G., 72, Park Lane, Leeds. Oct. 8, 1935, No. 27714. [Class 141] Means for adjusting the waistband of trousers comprise a piece or pieces of elastic material 1 anchored at 2 at or towards the back of the trousers within a tunnel 3, the free ends of the elastic material each having an attached metal or other rigid loop 5 through which passes an inextensible strap 6 anchored at one end 7 to the trousers, and provided at the other end with a sliding clasp or buckle 9. To afford increased grip, the inside of the trousers waist has pieces of pile fabric sewn thereto.
Patent GB-744398-A (GB)
Title: Vehicle windscreen wipers
Inventor: RIPPER DAVID WILLIAM
IPC: B60S1/38
Filed: 1953-10-09
Abstract: 744,398. Windscreen cleaners. LUCAS (INDUSTRIES), Ltd., J. Sept. 21, 1954 [Oct. 9, 1953], No. 27787/53. Class 138 (1) Relates to a windscreen cleaner of the type comprising a flexible rubber blade d, a resilient metal backing strip a attached to the rear edge of the blade, and at least one rigid link attached at its ends to the backing strip a and adapted for attachment directly or by means of an intermediate member or members to an oscillatory arm g. According to the invention a backing strip for the flexible blade d is made of thin flexible metal strip which is transversely corrugated so as to be extensible longitudinally. Corrugations are formed as humps e between flat portions of the backing strip which carry fingers b to grip the beaded edge of the flexible blade d. Some of the humps e are formed with transversely extending pins i to engage the ends of links h which are in turn connected to a bridge f. An additional link may be attached at both ends to the backing strip a and at its centre to the end of one of the links h.
Patent GB-741402-A (GB)
Title: Improvements in or relating to pattern controlled machine tool
IPC: B23Q35/12
Filed: 1953-10-09
Abstract: 741,402. Copy-milling. KEARNEY & TRECKER CORPORATION. Oct. 9, 1953 [Oct. 16, 1952], No. 27805/53. Class 83 (3). A pattern-controlled machinetool comprises a sphere 120 rotatable about a number of axes, a number of power takeoffs 135, 136 motivated by the sphere, and a tracer 26 connected to vary the position of the axis of rotation of the sphere in accordance with the dictates of the pattern 25. The milling- cutter 23 is mounted on a head 24 adjustable vertically by a wheel 29 on a slide 10. The work 22 and pattern 25 are carried on a slide 15 movable by hand or power through a screw 16. The slide 15 is mounted on a saddle 13 carried on a knee 11, the saddle and knee being movable by hand or by powermeans controlled by levers 18, 19. In use as a normal milling-machine, the rates of movement are determined by a selector lever 30. For copying, the tracer 26 controls the movement of the slides 10, 15. The tracer 26 is mounted eccentrically on a shaft 33 carrying a gear 34 meshing with a gear 35 on the shaft of a D.C. motor 36. The pattern 25 is of conducting material and the tracer is continuously oscillated into and out of contact therewith. According to whether or not the tracer is completing a circuit through the pattern 25, so one or other of two electronic valves is energized, through a double triode vacuum valve, to rotate the motor 36 to turn the tracer away from or towards the pattern. The back E.M.F. of the motor prevents over-running by affecting the difference in potential between the grids of the two valves. The eccentricity of the tracer 26 relative to the shaft 33, Fig. 8, results in the tracer " anticipating " the pattern by an amount X. This amount is constant except for inside corners when it varies according to the angle of the corner up to a maximum Y at a 90 degree corner. The line joining the centres of tracer and shaft preferably makes an angle #, = 45 degrees, with the direction of travel. Movement of the tracer shaft 33 is communicated through gears 125, 127, 129, to a mounting 130 for a wheel 123 rotated continuously by a motor 121. The wheel 123 rotates the sphere 120 about an axis determined by the position of the gear 130. Movement of the sphere is transmitted in a sine-cosine relationship to the wheels 135, 136, connected to shafts 115, 116, which respectively control the rates of movement of the table 15 and carriage 10. The rate of movement of the cutter over the work is thus substantially constant. The driving-wheel 123 is urged downwardly into engagement with the sphere 120, which is urged against the wheels 135, 136 by counter-wheels 137, 138 mounted in pivoted, spring-pressed housings. The shaft 115 may be connected by a flexible shaft to the screw 16 to rotate it and traverse the table 15. The shaft 116 is connected to a bevel-gear 245 within the head 10. The gear 245 drives a screw 251 to move the head. In the position shown in Fig. 6 the sphere 120 is rotating the wheel 136 at maximum speed, while the wheel 135 is stationary.
Patent GB-818206-A (GB)
Title: Aerating device
IPC: E03C1/084
Filed: 1957-09-04
Abstract: 818,206. Aerating liquids. WRIGHTWAY ENGINEERING CO. Sept. 4, 1957 [Jan. 15, 1957], No. 27897/57. Class 14 (1). An aerating device for attachment to a water faucet and the like comprises a cylindrical casing 10, Fig. 2, having a plurality of air ports 13 above which is located a disc 22 having apertures 23 from which jets of water impinge on a breakup and mixing mushroom-shaped body 26 which depends from the disc 22. An annular skirt 17 is secured at its lower flanged end to the casing below the ports 13 and extends upwardly above the ports 13 to divert inlet air upwardly towards the disc 22 and thence downwardly between the skirt 17 and body 26 and to prevent splashing of water through the ports 13. On the upper end of the skirt 17 is disposed a washer 18, Figs. 2, 4, having a plurality of scalloped openings 19 around its periphery and a large central aperture 30 through which the body 26 extends and which clears all the apertures 23 in the disc 22 to permit the jets of water to impinge on the downwardly sloping shoulder portion 32 of the body 26. The washer 18 spaces the disc 22 from the top of the skirt 17 so that air drawn in through the ports 13 first rises upwardly, passes over the top of the skirt 17, through the openings 19 and then downwardly to the main break-up and mixing zone 38 between the skirt and shoulder portion 32 of the body 26, as shown in Fig. 2. A portion of the air, however, passes upwardly through a narrow annular orifice between the periphery of the aperture 30 and the shoulder portion 32 to a primary break-up and mixing zone 37. The area of this annular orifice is greater than the total area of the apertures 23 and the minimum annular area between the skirt 17 and body 26 is greater than the area of the orifice whereby water is prevented from filling the two break-up and mixing zones. Further break-up of the mixed stream of water and air is provided by a series of stepped annular shoulders 34 on the inner wall of the lower portion of the casing 10, the shoulders 34 being undercut or re-entrant as opposed to the direction of fluid flow. Specification 800,359 is referred to.
Patent GB-759334-A (GB)
Title: Production of 2-mercapto-2-thiono derivatives of heterocyclic phosphorus-containing compounds
IPC: C07F9/6571
Filed: 1954-09-28
Abstract: The invention comprises 2-mercapto-2-thiono-derivatives of 1,32-dioxaphospholanes and 1,3,2-dioxaphosphorinanes having the formula <FORM:0759334/IV(a)/1> wherein R, R1, R2, R3 and R4 represent a hydrogen atom or an alkyl group, and n is 0 or 1.  The novel compounds may be prepared by reacting phosphorus pentasulphide with an alkane-1,2-diol or an alkane-1,3-diol, at a temperature between 25 DEG  C. and 100 DEG  C. and eliminating hydrogen sulphide as formed. Phosphorus pentasulphide is preferably added to the alkanediol in small amounts in the presence of an inert organic solvent for the diol and products.  Suitable diols are ethylene glycol, propane-1,2-diol, butane-1,2-diol, pentane-2,3-diol, propane-1,3-diol, butane-1,3-diol, pentane-2,4-diol, and hexane-1,3-diol.  Benzene, toluene, ethyl benzene and xylenes are suitable solvents.  The product may be recovered by conversion to alkali metal salt followed by acidification with a dilute mineral acid, separation of the oily layer thus formed and distillation under high vacuum.  In examples (1) 5-ethyl-4-propyl-2-mercapto-2-thiono-1,3,2-dioxaphosphorinane is produced from 2 - ethyl - 1,3 - hexanediol; (2) 4 - methyl - 2 - mercapto - 2 - thiono - 1,3,2 - dioxaphospholane is produced from propane-1,2-diol; (3) 4,4,6 - trimethyl - 2 - mercapto - 2-thiono - 1,3,2 - dioxaphosphorinane is produced from 2 - methyl - 2,4 - pentanediol; (4) 5,5 - diethyl - 2 - mercapto - 2 - thiono-1,3,2-dioxaphosphorinane is produced from 2,2-diethyl-1,3-propanediol.  The products are useful as intermediates, promoters in the flotation of sulphide ores and oil additives.
Patent GB-718854-A (GB)
Title: Improvements relating to buckles
Inventor: WOOD HERBERT HOWARD
IPC: A44B11/24
Filed: 1952-11-06
Abstract: 718,854. Buckles. WALKER, Ltd., T. Nov. 23, 1953 [Nov. 6, 1952], No. 27924/52. Class 43. In a buckle of the kind comprising a single, prong 5 hinged by an end loop 6 upon an end bar 2 of a stout wire loop or closed frame, lateral movement of the prong along the bar 2 is prevented by providing the latter with prong-locating nibs or projections 7 which are struck up on opposite sides of the eye or loop 6. The nibs 7 may be formed by a punch or other tool which displaces a portion of the metal of the bar 2 and raises it into a substantially radial position. In the example the buckle is made from a length of stout wire of circular or other crosssection which is formed into a closed loop with its extremities butting together at 1.
Patent GB-303935-A (GB)
Title: A method of hardening and waterproofing porous or fibrous materials and products obtained thereby
IPC: C04B41/47
Filed: 1927-10-20
Abstract: 303,935. Aaranson, H. A., and Chemical Waterproofing Corporation. Oct. 20,1927. Waterproofing blocks. - Porous or fibrous materials are hardened and waterproofed by impregnation with a solution comprising pitch dissolved in a non-inflammable solvent in the cold. Equal volumes of coal tar pitch and a suitable solvent such as tri-chlor-ethylene or tetrachlor-ethane are mixed to form a solution of creamy consistency. The solution may be diluted with turpentine, and is applied to the material by immersing the latter therein until saturated. Building-blocks of gypsum, or plaster boards, for example, are allowed to remain in the solution for 15 to 20 minutes and then allowed to drain. The articles are then dried or cured, either at normal temperature, or by heating to 250-350‹ F.