baber/WOPTO huggingface dataset:
Patent GB-716846-A (GB)
Title: Improvements in or relating to secateurs
IPC: A01G3/02
Filed: 1952-09-25
Abstract: 716,846. Secateurs. WALKER, L. M., and GRINLING, P. H. Dec. 15, 1952 [Sept 25, 1952], No. 24039/52]. Class 30 In spring-operated secateurs having a cutter-blade closing with a drawing action against a flat-edged jaw, the co-operat- .ing cutting members being held between overlapping cheeks on mutually pivoted handles, a locking pin retains the secateurs in closed position and has a limited degree of movement in a transverse aperture bored through the' cheeks of one limb of the secateurs, a head on the pin moving into and out of engagement with a recess formed in the contiguous edge of a cheek on the other limb of the secateurs. As shown, a pin f mounted in aperture g in the handle d<SP>1</SP> is slidable longitudinally to a limited degree controlled by a spring-loaded retaining pin projecting into a recess i in the shank f<SP>1</SP>. The pin f can be pressed by the thumb so that the head engages an aperture h<SP>1</SP>, in a cheek of the handle d when the handles are brought together. The cutter elements are released by pressing the pin in the opposite direction.
Patent GB-466321-A (GB)
Title: An improved method of and means for treatment of the exhaust gases from compression ignition types of engines in underground workings
IPC: F01N3/04
Filed: 1936-09-04
Abstract: 466,321. Treating exhaust gases. ALCOCK, J. F. Sept. 4, 1936. No. 24192. [Class 7 (ii)] Exhaust gases from compression-ignition engines used in underground workings and similar places are first cooled in a chamber 2, and then washed and scrubbed in a chamber 7. The chamber 2 is finned externally and encloses one or more baffles 4. A drain 5 permits the removal of condensates. From the discharge pipe 6, the gases impinge on the surface of water 8. Coke 9 and sawdust 10, kept moist by water-vapour, clean the gases on their way to the atmosphere through the vent 13. A byepass 15 for use above ground may be provided.
Patent GB-251848-A (GB)
Title: Rotary hoe cultivator means adapted for use on tractors
IPC: A01B33/02
Filed: 1925-09-29
Abstract: 251,848. Howard, A. C. Sept. 29, 1925. Clutches, friction. - In a rotary cultivating machine a driven spindle 62 carries a disc 66 provided with bevelled sectors 67 engaging corresponding bevelled sectors on a plate 69 which is held in place by spring-controlled U-bolts passing through a flange 71 on the tool-carrying shaft 63, so that normally the shaft 63 is driven from the spindle 62 but when the tools meet with obstructions the sectors slip over one another.
Patent GB-1379774-A (GB)
Title: Recording and or reproducing systems
IPC: H04S3/00
Filed: 1972-05-24
Abstract: 1379774 Quadrophonic systems NIPPON VICTOR KK 24 May 1972 [24 May 1971] 24404/72 Heading H4R In a four-channel record and reproduction system in which the four channels are split into two pairs, each preferably comprising a front and associated rear signal, and each pair is recorded as a sum signal plus an angle modulated difference signal, and in which the angle modulated signal is frequency modulated for components below a predetermined signal and phase modulated for at least part of the frequency band above that frequency, which is a transition frequency for frequency to phase modulation, a compressor is provided for the difference signal, before the angle modulation, which as the signal level is reduced provides greater gain for the signals in the vicinity of the transition frequency. At the reproducing apparatus a corresponding expander is provided in the difference frequency channel after the angle demodulator to restore the original dynamic range of the signal by applying, about the transition frequency, an attenuation which increases with reduction in signal level. As shown in Fig. 7, left front and left rear signalsare applied to matrix 14L to derive sum and difference signals. The sum signals are applied via delay 15L, to equalize the delay in the difference signal channel, to a mixer amplifier 16L. The difference signals are compressed to a characteristic, Fig. 11 (not shown) which provides increasing emphasis to signals about 800 Hz as the level of those signals reduces. The compressed signal is fed through an equalizer 18L and an angle modulator 19L which together provide frequency modulation up to 800 Hz and phase modulation above 800 Hz, with an optional return to F.M. above about 6 kHz. The angle modulated difference signal is applied to the mixer 16L through characteristic correction circuits and the mixer output recorded using the conventional RIAA equalizer 21L. The right front and rear signals are treated in a similar fashion for recording conventionally on the disc 24a. The reproducing apparatus, Fig. 8 (not shown), separates the sum and difference signals using filters (32, 34), the sum signal being fed direct to a matrix (33), and the difference signal via a limiter (35), angle demodulator (36), equalizer (37), expander (38) and a switching circuit (39) which operates to open-circuit the difference signal input to the matrix (33) during absence of the anglemodulated carrier, i.e. when playing a twochannel stereo record. The compressor and expander, Fig. 10 (not shown), derives a control signal via a band-pass filter only from the signals in the frequency band to be compressed or expanded.
Patent GB-1154315-A (GB)
Title: Benzodiazepine Derivatives Preparation
Inventor: NEDENSKOV POUL
IPC: C07D243/20
Filed: 1965-06-09
Abstract: 1,154,315. Benzodiazepine derivatives preparation. F. HOFFMANLA ROCHE & CO. A.G. 8 June, 1966 [9 June, 1965], No. 24418/65. Heading C2C. Compounds of the general formula (R = H, halogen, C 1-8  alkyl or CF 3 , R<SP>1</SP> = H, C 1-8  alkyl or bond to R<SP>3</SP>, R<SP>2</SP> = H or bond to R<SP>3</SP>, and R<SP>3</SP>, together with any R<SP>1</SP>'<SP>2</SP> bonds, represents in which R<SP>4</SP> = C 1-8  alkyl and R<SP>5</SP> = H or C 1-8  alkyl) are prepared by treating a compound of the formula with a phenyl-donating Grignard reagent and hydrolysing the product, optionally followed by N-alkylation and/or dehydration or oxidation. Starting materials are prepared by the following routes:
Patent GB-947611-A (GB)
Title: Stacking mechanism
IPC: B65H31/32
Filed: 1961-07-06
Abstract: 947,611. Stacking sheets. UNIVERSAL CORRUGATED BOX MACHINERY CORPORATION. July 6, 1961 [March 27, 1961], No. 24493/61. Heading B6H. [Also in Division B8] Equipment for forming stacks of collapsed cartons comprises a vertical hopper having retractable supports part-way down the hopper on which a stack of cartons dropped one by one from the top of the hopper is built up, the supports being retracted when the stack reaches a predetermined size to allow further cartons to drop one by one to build up the stack. The supports are again extended to interrupt the fall of further cartons while the stack upon the base is ejected. The hopper dimensions are adjustable for various carton sizes. The sides of the hopper entrance are formed by plates 38, 52. A bar 35 and the plate 38 extend between a pair of plates 27, 28 cupported by wheels 31 which roll on fixed tracks 26. This assembly is mounted for movement along the tracks by blocks 54 rotatably mounted on the threaded rods 55, 56. The rods 55, 56 can be rotated simultaneously by an electric motor. A bar 34 similar to bar 35 and the plate 52 are mounted on fixed supports 32, 33À Assemblies 64 are mounted on wheels 76 which run in slots 77 on the top and bottom of the bars 34, 35. The assemblies are moved along the bars by threaded rods 83 each of which can be rotated when required by further electric motors. The lower part of the hopper comprises guides 91 mounted on the plates 28, 32 and guides 93, 95 mounted on the assemblies 64. Mounted on assemblies 64 and supports 28, 32 respectively are piston and cylinder members 107, 112 having plungers 108, 114 which project into the path of the cartons B, fed into the top of the hopper by a belt conveyer (Fig. 2, not shown), and temporarily support a stack thus built up. These plungers are positioned just below the plates 38, 52. When the plungers are withdrawn the stack resting on the plungers falls to the base of the hopper, this comprising a number of rollers 21. The stack is allowed to further build up by cartons dropped directly from the top of the hopper when a predetermined number has passed the plunger they are re-extended to permit build-up of another stack. The stack on the rollers 21 is engaged by a pusher 127 mounted on a carriage 118 so as to be adjustable to be mid-way between the plates 38, 52. Angled plates 104 which form part of the guides for the corners of the folded boxes B swing back as the stack is advanced. The stack is ejected from the hopper by a pair of continuous rollers 74 mounted one on each of the assemblies 64 and driven by motors 71. The apparatus is controlled by photo-electric cells operating through apertures in the plates 38, 52 to count the boxes and initiate operations of the members 108, 114, 127. An additional plunger S may be arranged to support the centre of the cartons to reduce sagging of their centres. In a modified form of apparatus two sets of plungers mounted one below the other are used to give a further intermediate build-up position for the stack.
Patent GB-206294-A (GB)
Title: Improvements in connecting device for a hose supporter or the like
IPC: A41F11/02
Filed: 1922-09-11
Abstract: 206,294. Dehn, F. B., (American Narrow Fabric Co.). Sept. 11, 1922. Stocking-suspenders; fastening wearing-apparel. - In hose supporters and the like, two straps are connected by a metal attachment which has parallel sides 1, 2 terminating in corresponding hook portions 4, 5 and a connecting bar 8 which may be sheathed as shown in Fig. 2. The hooks are turned inwardly to form recesses 6, 7 for the straps. In the modification shown in Fig. 3, the part 1 is made integral with a toothed clamping strip 9 which is bent over to fasten the fabric without sewing.
Patent GB-227160-A (GB)
Title: Improvements in and relating to internal grinding machines and method of grinding
IPC: B24B5/08
Filed: 1923-10-03
Abstract: 227,160. McDonough, J. G. Oct. 3, 1923. Chucks.-In a machine for grinding internally cylinders, sleeves, gears, bushings, &c., the work 68 is supported by a chuck 66 comprising three removable clamping segments 69 secured to three wedge blocks 70 and having flanges 72 upon which the work rests. The blocks 70 co-operate with a conical surface 73 and the segments 69 are raised or lowered by the flange 76 of a sleeve 75 which is moved by a. a screw thread on the hub of a gear wheel 77, the wheel being rotated by any of three pinions 79a through spindles 79; a spring 174 normally forces the segments 69 apart.
Patent GB-702968-A (GB)
Title: Improvements in or relating to pulse-generators, embodying sections of transmission line
IPC: H03K3/55
Filed: 1951-10-23
Abstract: 702,968. Pulse generating circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Oct. 23, 1951 [Oct. 26, 1950], No. 24705/51. Class 40 (6) In a pulse generator of the type in which a delay line 8 connected in series with the load 9 is charged through a charging choke 6 and an H.F. choke 7 in series and periodically discharged by a gas-filled valve 10 connected across the delay line and load, the oscillatory circuit comprising the H.F. choke and the capacitance connected across it by the valve when conducting, is provided with a damping resistor. As shown the delay line is charged from a voltage doubler rectifier 2, 3, 4, 5 and the damping resistor 15 is connected in series with or across the H.F. choke 7 and critically damps the oscillatory circuit comprising the H.F. choke and the capacitance 12 mainly due to the charging choke. This circuit is preferably tuned to double the reciprocal value of the duration of the pulses so that the oscillatory current from the H.F. choke is small at the end of the pulse and is spread out over the whole of the input pulse duration to minimize peak value.
Patent GB-1148913-A (GB)
Title: Improvements in or relating to multivibrators
Inventor: SMITH DENNIS CLAYTON
IPC: H03K3/284
Filed: 1965-06-11
Abstract: 1,148,913. Transistor multivibrators. PLESSEY CO. Ltd. 27 May, 1966 [11 June, 1965], No. 24740/65. Heading H3T. In a multivibrator having the emitter electrodes of two complementary transistors T1, T2 coupled together, the base of one of the transistors is coupled to the collector of the other transistor which is connected in common base mode so as to define an A.C. negative feedback loop which causes the transistors to switch off to facilitate astable or monostable operation in accordance with the gain around the loop. The multivibrator operates in an astable mode when the common base transistor T1 is operated out of saturation so as to have a high current gain. Alternatively by arranging transistor T1 to have a small current gain, less than unity and operating in saturation the circuit operates as a monostable circuit. In one state transistors T1 and T2 are both on and capacitor C is discharged; due to the action of the negative feedback via the capacitor C the transistors T1 and T2 switch OFF. This may be caused by noise in the loop in the case of astable operation or due to a trigger pulse being injected into the loop in the case of monostable operation for turning off T2. When T1 and T2 have switched off the capacitor C begins to charge via resistors R1 and R3 until the potential at the emitter of T1 falls below ground, so that the capacitor C now charges via the resistor R3 and the emitter base junction of T1. As the charging current through R3 and C decreases the current drawn through R2 and T1 increases causing the potential at the base of T2 to fall below that of its emitter so that transistor T2 starts to conduct. Then due to the regenerative connections between the transistors both transistors turn hard on. The monostable circuit may be triggered at the base of T2 via a diode D or at the emitters of the transistors. A controlled signal may be applied to the monostable circuit as shown for operation like a keyed oscillator. The input to the monostable circuit may be fed from the output of a previous monostable or astable multivibrator circuits. An increased output current can be obtained by replacing transistor T2 by a Darlington pair of transistors. The output current rise time may be decreased by connecting a diode in parallel with the baseemitter junction of transistor T1. To eliminate the effect of supply voltage variations E1 should be greater than E2. By using a small value capacitor C and transistors with low hole storage characteristics the temperature stability can be improved.
Patent GB-461821-A (GB)
Title: Tool particularly for tightening or unscrewing screws and the like
IPC: B25B15/06
Filed: 1935-09-05
Abstract: 461,821. Screwdrivers; spanners. MOSS, G. L. Sept. 5, 1935, No. 24760. [Class 61 (iii)] [Also in Group XXII] A screwdriver &c. for loosening or final tightening a screw &c. comprises a spindle with its ends 18, 19 twisted in opposite directions reversibly mounted in a body 11 by means of a collar 21 and pin 22 engaging a hole 25 at either end of the spindle, the collar resting under the influence of a spring 24 on a shoulder 23 of a guide 15 slotted at the end to engage the twisted part of the spindle. The upper end of the body is fitted with a hammering cap 13, a blow on which causes the spindle to retreat in the body and rotate in the guide 15. A pip 26 at the mouth of the guide 15 is adapted to burr the material adjacent the end of the screw slot for locking the screw. In a modification, Fig. 4, the tool spindle has a cross piece 30 carrying rollers 31 engaging helical grooves 32, 34 in the inside of the body 11. For spanner work the spindle may have a polygonal end to fit corresponding sockets or vice versa. Specifications 18254/91, 507/92, 26995/97, [all in Class 61], 198,452, and 230,189, [both in Class 61 (i)], are referred to.
Patent GB-693449-A (GB)
Title: Process for concentrating rubber latex
Inventor: PATON FREDERICK JAMES
IPC: C08C1/075
Filed: 1950-10-11
Abstract: Rubber latex is concentrated by subjecting to electrodecantation a rubber latex containing an alkali and a bactericidal salt of a nuclear substituted phenol.  The salt is preferably an ammonium or alkali metal salt of a polyhalogenated phenol especially of a tetrachlorophenol or pentachlorophenol, and from 0.025 to 0.2 per cent. by weight, based on the latex is normally added.  The alkali, which is preferably ammonia, may be reduced to 0.1 to 0.4 per cent. The process may be carried out batch-wise or continuously using the apparatus of Specification 683,133.
Patent GB-335624-A (GB)
Title: Improvements in or relating to electric contacts of the plug and socket type specially applicable to contacts for electrical fuses
IPC: H01H85/20
Filed: 1929-05-21
Abstract: 335,624. Dennis, G. P. May 21. 1929. Divided on 335,548. Plug couplings. - In a plug - and - socket coupling in which the socket consists of a main part H, Figs. 1 and 4, and a segmental part h<1> pressed together by a garter spring J, the garter spring is provided with an axially disposed strip j<1>, Fig. 1, or a centrally disposed projection j<2>, Fig. 4, through which radial pressure is transmitted to the segmental part of the socket. Specification 264,217 is referred to.
Patent GB-1068361-A (GB)
Title: Improvements in or relating to hydraulic actuators
Inventor: ELLIS STAFFORD MALCOLM
IPC: F15B18/00
Filed: 1963-06-24
Abstract: 1,068,361. Fluid-pressure servomotor systems. ELLIOTT BROTHERS (LONDON) Ltd. July 24, 1964 [June 24, 1963], No.25031/63. Heading G3P. An electro-hydraulic system suitable for the actuation of an aircraft control surface 49 has four parallel control channels between a pilot's control column 52 and a lever 46 which actuates a control valve 79 for a hydraulic cylinder 80 operating the control surface and having a feedback lever 78. Each channel terminates in a piston 17, 18, 19, 20 connected by a piston rod 35, 40, 39, 41 with crossheads 38, 42 which are connected together by a tube 43, and any of the pistons may be disconnected automatically on failure of its associated hydraulic or electrical system. The control column, which has a "feel" device 101, actuates four transmitters, e.g. magslips, 56, 57, 58, 59 feeding an amplifier unit 60, and the corresponding output signals from the unit 60 are applied to respective torque motors 63, 73, 74, 75 operating valves 65 which control the individual pistons 17, 18, 19, 20. A separate hydraulic supply system 29, 94, 95, 96 is provided for each piston and the arrangement is such that as, e.g. the pistons 17, 19 are subject to pressure in their chambers 66 the other two pistons are connected to exhaust so that all the pistons assist each other to move the tube 43 in one direction against centering springs 81, 82. The outer sides of the pistons, of smaller effective area, are continuously subject to the hydraulic supply pressures. Electrical resistances 48 provide feedback signals to the unit 60 which also has an input from an auto-stabilizer (not shown). Should the hydraulic supply to one of the pistons fail, a pair of auxiliary pistons 27, 28 normally subject to pressure through holes 23, 24 are no longer effective to hold a flange 32 of an intermediate tube 31 in fixed relationship to the piston so that when the other three pistons are deflected the crosshead assembly moves the piston rod and intermediate tube 31 of the failed piston until balls 36 are moved beyond an internal annulus 37 to release the piston rod from its connection with the piston. The relative movement between the tube 43 and the failed piston will operate a switch 86, 87, 88 or 89 to energize a warning device. After a second piston has failed, the pilot should operate a lever 97 to render operative a connection between the control column 52 and a rod 100 so that the lever 46 is operated by the column. If then a third piston fails the remaining piston will be unable to overcome the springs 81, 82, the tube 43 will consequently be centralized, and control will be effected solely through the link 100. An electrical failure in the control of one of the pistons will result in the other pistons overcoming the hydraulic loading of the auxiliary pistons of the failed piston, this also resulting in release of the locking balls 36.
Patent GB-659973-A (GB)
Title: Improvements in or relating to bell-type kilns for burning ceramics
IPC: F27B11/00
Filed: 1949-09-29
Abstract: 659,973. Cooling kiln charges. ALLERT, B. Sept. 29, 1949, No. 25046. Convention date, Oct. 7, 1948. [Class 51(ii)] A bell-type electrically heated kiln 1 for firing ceramics is formed with upper parts 2 closed by plugs 3, small air openings 4 at the base of the kiln, a ware supporting hearth comprising plates 7 resting on blocks 6; and an inner circumferential baffle 5 at hearth level, thermocouples 11 and 12 disposed in the upper part of the kiln and below the hearth respectively being also provided. After firing, the ware is rapidly cooled to the critical recrystallization temperature of 575‹C by removing the plugs 3 and supplying air either under natural or artificial draught through the openings 4 until an indicating or controlling pyrometer attached to the thermocouple 12 shows the above temperature. The plugs 3 are then manually or automatically replaced and further cooling of the ware is done slowly. The furnace 1 may be positioned over another hearth by a hoist 10 on rails 9.
Patent GB-280509-A (GB)
Title: Improvements in and relating to emulsions particularly suitable for tanning purposes
IPC: C14C3/14
Filed: 1927-09-22
Abstract: 280,509. R÷hm & Haas Akt.-Ges. Nov. 13, 1926, [Convention date]. Emulsions, making. - Emulsions suitable for use in tanning are formed by treating oils and fats with freshly precipitated metallic hydroxides, especially aluminium hydroxide, and water. Urea may be added as it has a favourable effect in dyeing.
Patent GB-926863-A (GB)
Title: An improved method of carbon contact brazing, welding or soldering
IPC: B23K35/02
Filed: 1961-07-11
Abstract: 926,863. Welding by fusion; brazing. A. G. JACOBS. Dec. 20, 1961 [July 11, 1961], No. 25113/61. Class 83 (4). In a process of welding, brazing or coating in which heat is generated by passing current through a carbon electrode in series and in contact with the work, filler rod wire or tape is fed through a hole in or down the surface of the carbon electrode to fuse and flow on to the work. Flux may be applied to the work or form part of the filler rod wire or tape. The electrode may be a copper-coated carbon rod with an axial hole.
Patent GB-532499-A (GB)
Title: Improvements in radio directional aerial systems
IPC: G01S3/06
Filed: 1939-09-01
Abstract: 532,499. Aerials ; directive wireless systems. SOC. ANON. DES INDUSTRIES RADIOELECTRIQUES. Sept. 1, 1939, No. 25120. Convention date, Sept. 3, 1938. Addition to 500,162. [Class 40 (v)] A progressive-wave aerial of the kind described in the parent Specification, comprising a pair of closelyspaced conductors 18 ... 21 and 22 ... 25, coupled in phase-opposition to a transmission line 28, 29, is given a unilateral or cardioid characteristic by short-circuiting through a relay 41 part or whole of one of the terminating surge impedances, such as 33. This adds a vertical component to the normal figureof-eight response, and so gives a " sense " indication free from the 180 degrees ambiguity. Any undesired " vertical " effect that may tend to blur the critical " zero " reading is compensated by moving the coil 34 in the direction shown by the arrows, and so adjusting the electrostatic component of the transformer coupling 34, 35.