baber/WOPTO huggingface dataset:
Patent GB-696161-A (GB)
Title: Improvements in and relating to electric circuit breaker units
IPC: H01H33/75
Filed: 1951-06-20
Abstract: 696,161. Oil-blast circuit-breakers. BRITISH THOMSON-HOUSTON CO., Ltd. June 20, 1951 [June 23, 1950], No. 14638/51. Class 38 (v) A breaker unit includes an insulating baffle structure 39 having a central arcing passage 40, a channel 42 communicating therewith and a pair of supplementary divergent arcing passages 45, 46 opposite the channel 42. The blast is produced by the pressure generated in a space 27 by the arc formed between resiliently-mounted contacts 14, 15 and passes through apertures in insulating plates 29, 30 to a space 28 and hence through the channel 42 into passage 40 to blow the arc formed between contacts 13, 15 into one or other of the passages 45, 46 where it is extinguished. The passages 45, 46 have parts A so as to retain the arc looped within the structure 39, and a barrier 48 prevents the arc from wandering into channel 42. Specification 193,136, [Class 38 (v)], is referred to.
Patent GB-1518269-A (GB)
Title: Foam plastics element
IPC: A47K7/02
Filed: 1977-04-06
Abstract: The cleaning sponge (10) comprises an open-cell, flexible foam body and has a profiled working surface (11) having a plurality of parallel webs (13) between which there are grooves (12). These webs (13) have an elastic adhesive coating containing the abrasive material, e.g. powdered rigid foam, quartz or siliceous chalk. The webs (13) are impregnated with adhesive down to their roots. The sponge has a large effective scrubbing surface and can be produced in a simple, cheap way. <IMAGE>
Patent GB-737567-A (GB)
Title: Improvements in or relating to guanidino dithiocarbamic acids and preparation thereof
Inventor: FRY DOUGLAS JAMES
Filed: 1952-06-11
Abstract: The invention comprises guanidino-dithiocarbamic acids of the general formula <FORM:0737567/IV (b)/1> wherein R1, R2 and R3 are the same or different and are hydrogen or alkyl groups.  The acids are prepared by reacting an amino guanidine of the formula <FORM:0737567/IV (b)/2> or an acid salt thereof with carbon disulphide, preferably in the presence of a base when a salt is employed.  In examples (1) aminoguanidine bicarbonate in glacial acetic acid and ethanol is refluxed with carbon disulphide, and the excess solvents removed, yielding guanidino dithiocarbamic acid (inner salt).  The reaction is also carried out in the presence of anhydrous sodium carbonate or pyridine; (2) aminoguanidine hydrochloride in methanol containing sodium methoxide is refluxed, filtered, and the filtrate refluxed with carbon disulphide to yield guanidino dithiocarbamic acid (inner salt); (3) N-methyl - N - aminoguanidinium sulphate in aqueous ethanol is boiled with sodium acetate, the mixture filtered and the filtrate refluxed with carbon disulphide giving N-methylguanidino-N-dithiocarbamic acid (inner salt); (4) N1-methyl-N-aminoguanidine hydrochloride similarly yields N1 - methylguanidino - N - dithiocarbamic acid inner salt) (using potassium carbonate as a base); (5) N1-ethyl-N-aminoguanidine hydrochloride is likewise converted to N1-ethyl-guanidino-N-dithiocarbamic acid (inner salt).  Specification 737,568 is referred to.
Patent GB-1182065-A (GB)
Title: Muting Circuit for Frequency-Shift-Keyed Data Receiver
IPC: H04L27/14
Filed: 1968-03-27
Abstract: 1,182,065. Muting circuits. GENERAL ELECTRIC CO. 27 March, 1968 [24 April, 1967], No. 14749/68. Heading H3T. In a muting arrangement for a frequency-shiftkeyed data receiver, signals from a point preceding the signal detector are amplified by amplifier Q1 before rectification by a voltagedoubling rectifier comprising diodes CR1, CR2. The load circuit of this includes series resistor R8 so that an appreciable time must elapse after the initiation of a signal carrier before capacitor C4 is charged up. When charged transistor Q2 is driven conductive, clamping the base potential of transistor Q3 to earth thereby rendering this transistor non-conductive: the collector to emitter path of transistor Q3 shunts the output stage of the receiver whereby the latter is muted unless transistor Q3 is non- conductive. The output of the receiver detector, which comprises two alternative negative voltage levels if signal is present and in the absence of signal, negative-going noise pulses of greater amplitude, is applied via resistor R10 and capacitor C5 to a series diode 38, the anode of which is so biased that the diode only passes the noise pulses of greater amplitude than the signal levels. The noise pulses so separated are applied to the base of transistor Q4 which with transistor Q5 constitutes a Schmitt trigger circuit in which transistor Q4 is conductive in the absence of a noise voltage and transistor Q5 non-conductive: capacitor 33 is thereby not charged, rendering transistor Q6 so that it has no effect on the bias of transistor Q3. The collector circuit of transistor Q4 is shunted by diode 46 in series with capacitor 47 which has discharging resistor 48: an isolated noise pulse driving transistor Q4 conductive thereby has no effect on transistor Q5. Repeated noise pulses, however, cause capacitor 47 to charge up and allow the base potential of transistor Q5 to rise; the transistor thereby becomes conductive to charge capacitor C7, whereby transistor Q6 is also rendered conductive. This applied a positive bias to the base of transistor Q3, rendering this transistor conductive and muting the receiver.
Patent GB-232448-A (GB)
Title: Improvements in or relating to manually operable automobile signals
IPC: B60Q1/34
Filed: 1924-06-18
Abstract: 232,448. Koenigsberg, K. June 18, 1924. Obstruction-bars.-The operating rod for a vehicle signalling apparatus passes across the door 14 of the vehicle and has a pivoted section 15 which forms a locking unit for the door. The section is supported in an eye 16 which is rotatably mounted on the door and a screw 18 carried by the section and located in a slot 19 in the eye limits the longitudinal movement of the section in the eye. When the door is locked, the ends of the section dove-tail into the adjacent parts 11, 20 of the operating rod. The section 15 may be swung on its pivot to disconnect it from the parts 11, 20 and unlock the door.
Patent GB-199387-A (GB)
Title: Improvements in tennis rackets or the like
IPC: A63B49/12
Filed: 1923-06-05
Abstract: 199,387. Glenn, R. M. June 15, 1922, [Convention date]. Rackets; throwing and catching appliances.- The frame of a tennis racket, lacrosse stick or the like is made of a tube of magnesium or high magnesium alloy, for example, 94 per cent magnesium and 6 per cent aluminium. In the form shown, an extruded tube 3 is bent to the conventional shape and the handle portion is completed by wooden strips 4, 5, a filler block 6 being inserted at the throat.
Patent GB-1029849-A (GB)
Title: Motor vehicle
IPC: F16H59/04
Filed: 1965-04-08
Abstract: 1,029,849. Change-speed control. FORD MOTOR CO. Ltd. April 8, 1965, No. 14889/65. Heading F2D. A motor vehicle having an engine/gear-box unit 1 resiliently mounted in the vehicle body 13 has a gear-shift mechanism comprising a lever 21 mounted in a part-spherical seat 29 in a socket 19 movably mounted in the body 13, the lever 21 being connectible by at least one rod 7, 9, 11, Fig. 2 (not shown), to the gearshift mechanism and the engine/gear-box unit 1 being connected to the socket by a rigid link 73 so that relative movement of the unit relative to the body causes the socket to move relative to the body. A coil spring 36 engages the ends of a pin 33 in lever 21 to hold the lever in seat 29. The socket 19, made of a plastics material, has two inclined walls 17 fixed to body 13 and which converge towards the upper end of lever 21 so that bodily movement of the upper end of lever 21 due to movement of socket 19 is offset by angular change between lever 21 and the vertical due to the socket part 25 being tilted by movement of the socket. The forward gear rods 7, 9 have flat sections 41, 43 extending into socket 19 and have open recesses 53 engageable by the bottom of lever 21 to move the appropriate rod when the rod is tilted to one side or the other. A reversing rod 11, Fig. 2 (not shown), is connected to a lever 57 pivoted at 59 to socket flanges 55 and the  bottom of lever 21 engages a recess 71 in lever 57 to operate the reverse gear when lever 21 has been lifted against the bias of spring 36 and then tilted. The lever 21 is prevented from being lifted unless the forward gear rods are in neutral by a projection 69 on lever 21 cooperating with an aperture 61 in a flange 27 of socket 19 ; the lever 21 can only be lifted when projection 69 is in alignment with a portion 67 of the aperture; when the lever 21 engages recess 71 in lever 57 the projection 69 slides on the face of flange 27 so preventing the lever 21 moving out of recess 71 whilst reverse gear is engaged.
Patent GB-818291-A (GB)
Title: Improvements in or relating to warning devices on rotary wing aircraft
Inventor: SEAR WILFRED HAROLD
IPC: B64C27/00
Filed: 1956-05-14
Abstract: 818,291. Warning devices on rotary wing aircraft. WESTLAND AIRCRAFT Ltd. May, 13, 1957 [May 14, 1956], No. 14896/56. Class 4. A rotary wing aircraft includes rotor speed and engine speed tachometer generators connected to give an audible signal when the rotor speed approaches a preselected limit. In the embodiment described, three phase signals from the rotor speed tachometer generator 9, Fig. 1, are fed directly to a full wave rectifier W2 shunted by a capacitator F5, and through three equal capacitors F1, F2, F3, to a full wave rectifier W1 shunted by a capacitor F4. One coil of relay A/1 and one coil of relay B/1 are connected in series across the output of rectifier W1, and a second coil of each relay is connected across the output of rectifier W2 through trim resistors VR1 and VR3 or VR2 and VR4 respectively, depending on the position of contacts EE1 and EE2. The two coils of each relay are connected to give flux opposition, the result being that when the frequency of the tachometer generator signals approaches a maximum value, determined by the setting of resistor VR1 or VR2, relay A/1 is operated, and when the frequency approaches a minimum value determined by the setting of resistor VR3 or VR4, relay B/1 is operated. Closure of contact A1 or B1, Fig. 3, energizes a relay slugged by a capacitor F6, and thus opens a contact C1, de-energizing the relay and closing contact C1. This cycle is repeated at a frequency depending on the value of resistors R1 or R2 and capacitor F6, and if relay is energized, the frequency may be ten cycles per second, and if relay is energized, three cycles per second. Closure of contact C2 of relay C/2 energizes relay D/1, opening contact D1, de-energizing the relay and closing contact D1. The resultant wave-form is filtered by capacitor F8, and the output actuates an aural alarm, e.g. in headphones. A three-phase output from the engine speed tachometer generator 10 is fed to a full wave rectifier W3 shunted by capacitor F7, which normally energizes a relay E/1 through a trim resistor VR5. If the engine fails relay E/1 is de-energized, closing contact E1 and energizing relay EE/2. Thus if autorotation is established, the frequencies at which relays A/1 and B/1 change over are altered since contacts EE1 and EE2 substitute the trim resistors VR2 and VR4 for VR1 and VR3.
Patent GB-620050-A (GB)
Title: Improvements in or relating to means for adjusting the outlet cross-sectional area of the propulsion jet nozzle of a jet propulsion plant
IPC: F02K1/15
Filed: 1946-05-17
Abstract: 620,050. Indicating- apparatus. SOC. RATEAU, and ANXIONNAZ, R. May 17, 1946, No. 15034. Convention date, June 13, 1945. [Class 106 (iv)] [Also in Groups XXVI and XXIX] In a gas turbine plant for the jet-propulsion of aircraft, the outlet area of the propulsion jet is varied in accordance with the value Pe/Po - #(P#/Po), where Pe is the pressure at the propulsion nozzle, Pf, the pressure in the combustion chamber, and Po, the inlet pressure of the compressor. For manual control, an indicating instrument, Fig. 3, is provided in which pointers A, B are moved, proportionally to Pe/Po and P#/Po, about a scale on which the properly related values are connected by lines i. The pistons d, g, h move in accordance with changes in Po, Pe and Pf respectively. The pistons g, h are moved bodily by the piston d so that the points of application to the pointers of the movements of pistons g, h vary with Po.
Patent GB-719265-A (GB)
Title: Improvements in or relating to machines for the treatment of turf
Inventor: HARGREAVES DEREK BURTT
IPC: A01B45/02
Filed: 1952-06-19
Abstract: 719,265. Turf piercing machines. HARGREAVES & CO., Ltd., W. June 19, 1953 [June 19, 1952], No. 15416/52. Class 6 (1) A machine for piercing turf comprises discs q mounted on axles t provided with drawbars k which are pivotally connected to the lower part of a frame f which is attached to the three-point linkage c, d of a tractor hydraulic lifting gear and a tie member such as a chain n connecting each drawbar 16 an upper part of the frame. To permit the discs to rise and fall freely when working and to permit a limited swinging movement, each drawbar is provided with a connecting member pivotally mounted on a vertical pivot bolt l and pivoted to the frame f by means of a horizontal pivot bolt j. The discs q are shown with alternative tines of which the tines u are tubular and the tines v are blade-like and are adapted to be used either way round. To facilitate transport the axles of adjacent units may be secured by a clamp so that when the units are raised their relative movement is limited. Specifications 491,597 and 611,324 are referred to.
Patent GB-870633-A (GB)
Title: Pentamethincyanines
Inventor: FRY DOUGLAS JAMES
IPC: G03C1/20
Filed: 1958-05-14
Abstract: 2-Aminopyrimidine is quaternized by refluxing it with methyl iodide or dimethyl sulphate in dry benzene.  2-Methylthiopyrimidine is quaternized by refluxing it with dry methyl iodide.ALSO:Dicarbocyanine dyes are prepared by reacting, in the presence of an acid binding agent, one molecular equivalent of a pyrimidine quaternary salt of the formula:-  <FORM:0870633/IV(c)/1> with two molecular equivalents of a quaternary salt of the formula:- <FORM:0870633/IV(c)/2> wherein R1 is hydrogen, or an alkyl, aryl or aralkyl group, R2 is an alkyl, aryl or aralkyl group, R3 is an alkyl, aryl, aralkyl, hydroxyalkyl or carboxyalkyl group, A is hydrogen or a monovalent substituent, M is -N= or -CH=, X and Y are anions, D completes a 5- or 6-membered ring and n is 0 or 1.  The pyrimidine ring splits to give pentamethine dyes which may have a substituent (R1) on the central methine group.  Examples are given of the reaction of quaternary salts of pyrimidine, 2-methylthio pyrimidine, 2-methylthio-5-methyl pyrimidine, 2-methylthio-5-phenyl pyrimidine, 2-benzylthio pyrimidine, 2-amino pyrimidine, 2-methylamino pyrimidine, 2-methoxy pyrimidine, 2-methyl pyrimidine, 2-methyl-5-n-butyl pyrimidine or 2-phenyl pyrimidine with cyclammonium salts of benthiazole, benzselenazole, naphthathiazole, quinoline, indolenine, pyrimidine, 1; 3; 4-thiadiazole, thiazole or thiazoline having a reactive methyl group.  Example 26 shows the production of an anhydrohydroxide from 2-methyl-5-chlorobenzthiazole b -carboxyetho-chloride.
Patent GB-277438-A (GB)
Title: Improvements in and relating to lamps, illuminated signals or indicators and the like
IPC: B62J6/00
Filed: 1926-06-19
Abstract: 277,438. Andrews, J. A. June 19, 1926. Light, obtaining by friction. - Relates to rear lamps for cycles &c., with pyrophoric means for emitting a periodic or intermittent light or sparks behind a screen or coloured glass, such as a ruby lens or red glass. The rear lamp 4 having a ruby lens or glass 5 and a reflector is provided with a rotary wheel 9 milled over the whole or part of its periphery and engaging pyrophoric material 7 forced forwards by a spring 8 and a sliding pin 6<b> held in definite positions by a pin 6<c> and a bayonet slot. The wheel 9 is rotated by means of a pin 13 on the spoke 14 of a cycle wheel engaging a star wheel 12 or by means of a snail and pinion, and the lamp can be moved into inoperative position as by being securable in one or other position by a thumb screw 16 or a spring lock. The striking pin for the star wheel is prevented from rotation by an extension 13<a> lying against the adjacent spoke 14<a>.
Patent GB-379345-A (GB)
Title: Improvements in and relating to cameras
IPC: G03B33/00
Filed: 1931-05-27
Abstract: 379,345. Colour photography. HILLMAN, A. G., GILL, B. T., and GERRARD INDUSTRIES, Ltd., Victoria House, Vernon Place, Southampton Row, London. May 27, 1931, No. 15551. [Class 98 (ii).] A camera for colour photography, in which multiple images are taken by simultaneous exposure from the same point of view and in which focusing is effected by simultaneous movement of the focal planes, has sliding plate holders guided and actuated on opposite sides by direct drive from a pinion common to a rack of each holder. As shown in Fig. 1, behind the objective 1 is a light-dividing system 2, 3, such as is described. in Specification 357,660. Focusing is effected by simultaneously moving the plates 4, 5, 6 by providing each focal-plane change-box 7, 8, 9 with pairs of racks 10, 11, 12 actuated simultaneously by pinions 13, the racks working in shoes 17. The focal planes are each independently adjustable by the set screws 23. The colour filters 19, 20, 21 and the plates 4, 5, 6 are retained in the change boxes by the spring frames 22. To compensate for chromatic dispersion, one or more of the focal planes may have an accelerated or retarded movement relatively to the other planes. As shown in Fig. 4, the rack 10 fits in a shoe 24 secured to the change-box 7, and has a pin 25 passing through the slot 26 in the shoe 24 and forming a pivot for the lever 27 pivoted to the shoe at 28 and having a roller 29 pressed by the spring 30 against or working in a track in the arm 32, which projects from the plate 33 pivoted at 34 to the bracket 35. Adjustment of the screws 36, 37 varies the position of the arm 32 and causes the lever 27 to pivot about the pin 25 and accelerate or retard the motion of the box.
Patent GB-199927-A (GB)
Title: Improvements in or relating to coal-cutting machines
IPC: E21C29/22
Filed: 1922-06-06
Abstract: 199,927. Anderson, Boyes, & Co., Ltd., and Anderson, A. June 6, 1922. Coal-cutting machines.-A coal-cutting machine is fitted at each side with a wheeled structure adapted to be raised or lowered in guideways by the power of the machine. The wheels 1, 1<A> are carried in brackets 11 vertically movable in guides by screw and nut mechanism 9, 10 driven from the shaft 2 through a shaft 5, cross shafts and bevel gearing, a slip-clutch 4 preventing over-running. The wheels 1<A> are driven from the shaft 5 through bevel gearing and shafts 16, and drive the wheels 1 through shafts 19 and bevel gearing. A clutch 12 controls both drives. The Provisional Specification states also that the drives may be effected by a separate motor.
Patent GB-220755-A (GB)
Title: Improvements relating to the rotors of high speed dynamo electric machines
IPC: H02K3/487
Filed: 1923-06-18
Abstract: 220,755. Lancashire Dynamo & Motor Co., Ltd., and Bramley, C. P. June 18, 1923. Coils and conductors, securing in open rotor slots. Relates to the rotors of high-speed dynamo-electric machines in which the windings are wedged in radial slots. The conductors E are consolidated in the slots A by pressure applied to auxiliary slot wedges D which engage with auxiliary reaesses a<2> in the walls of the slots as the pressure is applied and hold the conductors in the consolidated position after the pressure is removed, the main slot wedges C being then fitted in the usual main recesses a<1>, the main wedges making joint with and backing up the auxiliary wedges throughout their length. The ends f<1>, f<2> of the slot insulation overlie one another and a strip of insulation G is positioned between them and the auxiliary wedge. The auxiliary wedges may be corrugated, and when this form is employed additional slot insulation is provided and the strip F may be of metal.
Patent GB-1167539-A (GB)
Title: Improvements in Automatic Guns
Inventor: STONER EUGENE MORRISON
IPC: F41G1/16
Filed: 1966-09-29
Abstract: 1,167,539. Automatic weapon. E. M. STONER. 29 Sept., 1966 [29 Sept., 1965], No. 15804/69. Divided out of 1,167,536. Heading F3C. The subject matter of the present Specification is as that in the parent Specification but the claims relate to an automatic gun having a plurality of selectively operable ammunition stores and a store selector, actuation of the selector also causing the firing of the gun to be automatic or semi-automatic.
Patent GB-273890-A (GB)
Title: Improvements relating to furnaces for heating tar and the like
IPC: C10C3/12
Filed: 1926-06-24
Abstract: 273,890. Macintosh, R., and Macintosh, A. B. June 24, 1926. Cauldrons. - Furnaces for tar boilers of the type including an inner pan 9 for holding the molten tax and an outer shell 10 enclosing the lower part of the pan and forming a combustion chamber, have the arch above the depending firebox 11 constituted by a series of arcuate plates 1 placed end to end, a series of arcuate protective jackets 2 being detachably mounted side by side on the inner surfaces of the plates 1. The jackets 2 are held in position by bolts 3 passing through the plates 1 and engaging bosses 4 integral with the jackets. Passages 5 between the jackets and the plates 1 are open to the atmosphere at the front and communicate with a common chamber formed between end plates 6, 7 at the back. Holes 14, 15 in the arched plates 1 and end plate 6 allow air to pass to the combustion chamber. The inner end of the arch is rabbeted at 8 to communicate with the combustion chamber, the gases from the grate 13 flowing to the chimney 18 as indicated by the arrows. A central baffle 16 directs the gas flow towards the side openings 8.
Patent GB-110627-A (GB)
Title: Improvements in connection with Stage Lighting.
Inventor: BOOTH EDGAR
IPC: F21S8/00
Filed: 1916-11-07
Abstract: 110,627. Booth, E., and Booth, N. R. Nov. 7, 1916. Electric-lamp casings.-In a stage lighting system, each electric lamp a has a reflector r whose interior is painted white; the edges s of the reflector are turned over to permit insertion of a plate of frosted or coloured glass k. Ventilation openings v are made in the reflector.
Patent GB-981091-A (GB)
Title: Improvements in or relating to electrical actuating apparatus
Inventor: HARRIS ROYSTON SIDNEY
IPC: B01J29/08
Filed: 1960-05-05
Abstract: 981,091. Control of D.C. motors; electromagnetic switches. S. SMITH & SONS (ENGLAND) Ltd. May 5, 1961 [May 5, 1960], No. l5899/60 Headings H2B and H2J. When switch 3 is closed to energize radio set 1, relay coil 4 is energized to close contacts 21, 22, so that motor 25 operates to extend aerial 27. When the aerial is fully extended, stops 33, 34 engage to stall the motor, the increased current causing bimetal 24 to open contacts 23. Coil 13 is then energized to disengage plate 18 and leaf 11, whereby contacts 21, 22, open to de-energize both the motor and the coil 13. Plate 18 is returned to its normal position by spring 17, the leaf 11 being engaged within slot 19. When the coil 4 is de-energized by opening switch 3, contacts 20, 21 engage and the motor is energized in a sense to retract the aerial. The motor is stalled in the fully - retracted position, the contact 23 again opening to displace plate 18 and open contacts 20, 21. The motor and the coil 13 are now de-energized and the parts are returned to their original positions in readiness for a new cycle of operations.