baber/WOPTO huggingface dataset:
Patent GB-1281218-A (GB)
Title: Carburettors for internal combustion engines
IPC: F02M11/02
Filed: 1969-08-06
Abstract: 1281218 Spray carburetters ACF INDUSTRIES Inc 6 Aug 1969 [9 Aug 1968] 39305/69 Heading F1B The Venturi 32 located in the induction passage 12 upstream of the throttle valve 22 has fuel supplied thereto by a nozzle 60 and air flow therearound controlled by a valve 100. The spindle (102), Fig. 5 (not shown), of the valve 100 is connected to the throttle spindle 24 through respective levers (120), 115 connected by a link (118) co-operating with a slot (121) in one of the levers (120) and one of a plurality of apertures (117) in the other lever 115 so that the valve 100 begins to open at an adjustable predetermined throttle opening. A cam 130 on the lever 115 contacts the end 136 of the metering needle 132 to control the flow of fuel/air mixture through the nozzle 60. Fuel flows to the nozzle 60 (from a float chamber 36) through an orifice 56 containing a metering rod 66, controlled by the vacuum downstream of the throttle valve 22 acting on a spring-biased diaphragm 76. Air flows through a passage 96 and apertures (63), Fig. 4 (not shown), in a tube 62 surrounding the rod 66. Fuel from a well (18), Fig. 2 (not shown), communicating with the main fuel well 20 through a passage 19, is mixed with air passing through a restriction (43) for flow to a needle controlled idling orifice (48). In a two barrel carburetter, Figs. 8 to 10 (not shown), the air flow around respective Venturis (206, 208) in the two induction passages (202, 204) is controlled by throttle-linked valves (258). Respective needles (280) control liquid fuel flow through Venturi nozzles (224) and fuel flow from the float chamber (216) is controlled by a vacuum controlled needle (260) which is also movable by a lever (268) connected to the throttle spindle (214). The carburetter includes an accelerating pump (250) operated from the throttle spindle (214). The valves controlling air flow around the Venturis may comprise two half discs mounted on separate shafts or an iris.
Patent GB-1192926-A (GB)
Title: Improvements in or relating to Additives for use in Steam-Raising Boilers
Inventor: PITTS FRANK
IPC: C22C32/00
Filed: 1966-09-02
Abstract: 1192926 Preventing corrosion MAGNESIUM ELEKTRON Ltd 17 Aug 1967 [2 Sept 1966] 39354/66 Headings C5G and G10B [Also in Division C1] Corrosion in oil fired boilers is reduced by the injection of a granular mixture of magnesium oxide and magnesium, the former constituting at least 50% but not more than 90 wt per cent of the mixture. Shellac in methylated spirits may be used as a binder for the mixture, which is sized to pass a <SP>1</SP>/ 16  inch sieve but to be retained on an 80 B.S.S. sieve.
Patent GB-1519886-A (GB)
Title: Suspension apparatus
IPC: A61G5/00
Filed: 1976-09-23
Abstract: 1519886 Vehicle suspensions F W THORNHILL 23 Sept 1976 [25 Sept 1975] 39558/76 Heading B7D An anti-roll suspension for a motor vehicle comprises piston and cylinder units 5, 6 having upper and lower chambers 7, 9 and 8, 10 connected in opposite fashion by fluid lines 13, 14 each of which is in restricted communication with a respective hydraulic accumulator 15, 17 through an adjustable metering valve 16, 18.
Patent GB-1518525-A (GB)
Title: Apparatus for providing a uniform combustible air-fuel mixture
IPC: F02M9/133
Filed: 1975-09-29
Abstract: 1518525 Spray carburetters CARBOECONOMY SA 29 Sept 1975 [13 Feb 1975] 39813/75 Heading F1H The convergent-divergent induction passage is controlled by a throttle member 28 to define a variable annular flow passage there-between and fuel is supplied to the passage through a plurality, e.g. twelve, outlets 22 circumferentially spaced. The member 28 is mounted on a rod 30 connected by rods 33, 34a, 34b to a manually operable lever 36b linked to the fuel metering needle 46. The member 28 is biased relative to the rod 30 by a spring (32), Fig. 4 (not shown), to engage the divergent surface 20c of the induction passage wall when the lever 36b is released. The flow passage defined between the surface of the portion 28a of the member 28 and the surface 20c has a constant outlet to inlet area ratio of about 2 and the surfaces have the included angle from 64 to 96 degrees, preferably 90 degrees. The carburetter may provide an air-fuel ratio of 19:1. A nozzle 27 provides extra fuel for starting.
Patent GB-1411283-A (GB)
Title: Four-wheel-drive vehicles
IPC: B60T8/48
Filed: 1972-08-26
Abstract: 1411283 Differential gear; hydraulic transmission control GKN TRANSMISSIONS Ltd 15 June 1973 [21 June 1972 26 Aug 1972] 28975/72 and 39897/72 Headings F2C F2D and F2W In a four-wheel drive vehicle, wherein front and rear axles are coupled by a coupling which transmits torque upon relative rotation, to divert a portion of the torque from faster to slower rotating wheels, the coupling is subject to a temperature-sensing element which causes a reduction in the speed of relative rotation and hence the amount of energy converted into heat in the coupling. The coupling may comprise a throttled planetary gear pump, a viscous coupling, or a combined friction and viscous coupling, which latter may be shunted across a bevel differential gear. The thermal element may act directly or electrically. In Fig. 2 the coupling is a two-element planetary pump in a housing 45 in a casing arranged parallel to the main change-speed gear (18, Fig. 1, not shown) of the vehicle, the output of which gear drives the rear axle propeller shaft (19) directly and also the input shaft 26 of the planet gear through a transfer gear (20). The housing 45 is welded to an output shaft 43 and sprocket 58 which chain drives the front axle propeller shaft (21). Splined in the housing 45 is a ring gear 49, meshing planets 33 on a carrier 28 splined at 27 to the input shaft 26. Relative rotation between the axles causes the shrouded planets to pump liquid through a path 38, 41, 53, 35, including a restricted gap between faces 55, 54 of an axially fixed element 56 and a valve element 52, which latter is moved axially to decrease the gap and hence the resistance to relative rotation when the temperature rises sufficiently to expand a wax or vapour sensing element 60 opposed by a spring 57. In Fig. 6, a front axle drive-sprocket 105 is coupled to a rear axle direct drive shaft 103 by an interleaved disc viscous coupling 101 in parallel with a similar friction coupling 106, the discs of which latter are pressed axially into engagement by a wax or vapour temperature sensor 195. The latter is heated by slip in the friction discs as they initiate engagement as well as by the viscous coupling, so that the temperature of clutch release is below that for engagement, which prevents hunting. In Figs. 7 and 8, (not shown), the temperature sensing element is a corrugated bi-metal ring (250), which acts directly on the discs of the viscous coupling to reduce the clearance between them and hence increase torque capacity, with increase in temperature. In this form there is no parallel friction coupling and the viscous coupling acts alone. In Fig. 5 (not shown), the front and rear axles are driven by the side wheels of a bevel differential gear, and a combined viscous and friction coupling, arranged around the outside of the differential, directly connects the side-wheels.
Patent GB-1096797-A (GB)
Title: Lamp control circuit
IPC: H05B39/09
Filed: 1965-09-20
Abstract: 1,096,797. Transistor pulse circuits. R. L. SEIDLER. Sept. 20, 1965, No. 39933/65. Heading H3T. [Also in Division G4] A circuit, Fig. 3, for flashing a lamp 24 comprises a bi-stable circuit including transistors 17, 20, 23 the state of which is switched by a pair of relaxation oscillators employing unijunction transistors 11, 12 respectively. When the supply is first connected, the charge on capacitor 14 builds up until transistor 11 conducts producing an output pulse on line 18 which causes transistors 17, 20, 23 to switch to their conducting state and light the lamp 24. After a further time period capacitor 16 charges to switch on transistor 12 producing a pulse at the junction of resistor 30 and capacitor 22 which switches off transistors 17, 20, 23 and extinguishes the lamp 24 until the next pulse on line 18. In order to modify the pulse spacing and/or width a bi-stable circuit 32 is included which is switched by pulses from transistor 11. When this circuit is in one state, resistor 13 is shunted by resistor 33 to give a short time constant for relaxation circuit 11, in the other state, the resistor 33 is isolated by diode 34, and the relaxation circuit has a long time constant. The flashing lamp pulses are thus alternately separated by short and long gaps 41, Fig. 4 (not shown). If a similar connection is made to the time constant circuit of relaxation circuit 12, i.e. resistors 15, 43, alternate long and short pulses are also produced 45, Fig. 4 (not shown). In an alternative arrangement, Fig. 5, bistable circuit 32 is switched by a third relaxation circuit 46 operating at a lower frequency. When first switched on, this circuit produces a train of regularly spaced pulses until relaxation circuit 46 fixes changing the state of bi-stable circuit 32. Transistor 37 then conducts and its low collector potential inhibits operation of oscillator 11 until the next pulse from oscillator 46 switches circuit 32 back to its initial state.
Patent GB-1436878-A (GB)
Title: Pulse density modulation to pcm modulation translation
IPC: H03M7/04
Filed: 1973-08-23
Abstract: 1436878 Pulse density-to-pulse code modulation conversion; active filters STANDARD TELEPHONES & CABLES Ltd 15 Aug 1974 [23 Aug 1973] 39935/73 Headings H3H and H3U In converting pulse-density modulation to pulse code modulation, the P.D.M. is passed through a digital filter whose output is sampled to provide the-P.C.M. signal.  In one form of digital filter, Fig. 2, an 8-06 M Mb./s. P.D.M. signal is passed through a non-recursive filter 20 having 32 equally weighted tappings connected to a summer 21 to derive 5-bit binary words which are passed through a second non-recursive filter 22 having 504 tappings connected to a summer 23 to give 14-bit words which are sampled at a 16 kHz rate to give the P.C.M. signal. An alternative digital filter, Fig. 4, comprises two parallel stages connected to an adder. In one stage (which may be shared by other channels in a multiplexed system) the count in a 5-bit counter continuously incremented at the P.D.M. bit rate is gated into an accumulator 42 by the P.D.M. signals, the accumulator being cleared after 31 P.D.M. bit times. The output of the accumulator register 40 is applied to the adder, directly and via a delay 44, equal to one 16 kHz period. In the other stage, the P.D.M. signal is applied to a counter 41 whose output, sampled at 16 kHz, is shifted 5 binary places in register 43 and applied to the adder. At the beginning of each conversion cycle, counter 41 is reset to -252, by assigning the most significant stage a weight - 256, this removing bias resulting from the P.D.M. neutral state of alternate is and 0s. The converter may comprise an intermediate sampler (51) between two cascaded filters (50, 52), Fig. 5 (not shown).
Patent GB-1068726-A (GB)
Title: Colour television signal mixing apparatus
IPC: H04N9/76
Filed: 1965-09-20
Abstract: 1,068,726. Colour televisions. FERNSEH G.m.b.H. Sept. 20, 1965 [Sept. 19, 1964], No. 40062/65. Heading H4F. Colour television signals from cameras 8-13, film scanners 14, 15 and slide scanner 16 located in studios 1, 2 and 3 are mixed and cross-faded in a control system 4 comprising preliminary mixers 30, 31, cross-bar switch 32 and final mixer 33, the arrangement being characterized by the use of P.A.L. signal encoders 17- 25 in the individual signal channels preceding the mixing apparatus and a P.A.L. to N.T.S.C. transcoder 34 in the output from the final mixer 33. The arrangement avoids the need to maintain equality of the sub-carrier phases which would arise if the signals were encoded to N.T.S.C. form before mixing and fading. It is stated that the characteristics of the P.A.L. signal permits phase differences of Œ85 degrees to be tolerated. Critical dimensioning of the lengths of output leads from encoders 17-25 is avoided. The sub-carrier signals for the encoder are supplied by a common source 27 which also controls the main blanking and synchronizing source 26. This in turn controls sources 5, 6 and 7 for the individual studios. Mixers 30, 31 and cross-bar switch 32 are operated remotely by control desks 36, 37 and 38 in the studios. -
Patent GB-1127626-A (GB)
Title: Master cylinder assembly
IPC: B60T11/22
Filed: 1965-09-23
Abstract: 1,127,626. Hydraulic brakes; indicators. BENDIX CORP. 23 Sept., 1965 [23 Sept., 1964], No. 40523/65. Addition to 1,118,618. Headings F2E and F2F. In a master cylinder assembly a hollow reservoir member 32 of a plastics material has a flexible annular flange 31 at its lowermost end which engages a flange 30 provided on the body member 10 of the master cylinder, the lower end of the annular flange 31 being provided with a plurality of slots 35 to form a plurality of flexible flange sections 34, each section being provided with a lip portion 44 to form an annular flange which engages an annular shoulder 40 located in the annular flange 30 of the master cylinder casting 10, and a snap ring 50 being provided to engage the inner surface of the flange sections 34 to press the outer side of the sections against the inner walls of the annular flange 30. An annular sealing member 38 is disposed in an annular recess 36 for engaging the annular base portion of the reservoir member 32 and the outer surface of the flange to prevent leakage of fluid therefrom. Locating means 54 may be provided on the reservoir member 32 and the body member 10 of the master cylinder to prevent undue rotation of the reservoir.
Patent GB-991408-A (GB)
Title: Improvements in or relating to electric water heaters
IPC: F24H1/10
Filed: 1960-11-25
Abstract: 991,408. Electric water heaters. L. H. VICKERS. Sept. 29, 1961 [Nov. 25, 1960], No. 40677/60. Heading H5H. In an electric heater, in which a stream of water is heated by direct contact with an exposed resistance heating element connected to an A.C. supply, the element is held away from the wall of the water flow passage so as to define a definite path for water between the heating element and wall around substantially the whole of the periphery of the heating element. As shown, a heating cartridge is secured to a water heater base 12 of the kind described in Specification 991,409, and comprises four heating channels 6, 61 connected by grooves 8, 9 to form a continuous passage in a plastic body 1 having cover-plates 2, 3. The continuous heating element 14 is provided with four triangular cores 17 and is located by ribs 7 formed in the walls of the flow passage. The middle of the heating element, lying in groove 8, is connected to terminal 16 and to the line voltage, while the ends of the element, adjacent inlet and outlet ports 10, are connected to terminals 15 and to neutral, or alternatively the midpoint and ends of the element may be connected to neutral, the mid-points of the two halves being connected to line voltage.
Patent GB-1516566-A (GB)
Title: Hydraulic percussive device
IPC: B25D9/20
Filed: 1976-09-30
Abstract: 1516566 Hydraulic reciprocating motors TAMPELLA AB OY 30 Sept 1976 [20 Oct 1975] 40700/76 Heading F1A [Also in Division B4]  A hydraulic percussion apparatus, eg a rock drill, comprises a body 1 to which a tool 2 can be attached, a piston 27 and a sleeve valve 34 both reciprocable in a cylinder space 8, 10, the piston having a flange 4 with a channel 43, the sleeve having an upper distributing portion 35 and a lower extension 36 (lower being closest to tool 2), the external diameter of sleeve extension 36 being less than that of distributing portion 35 and the area of its lower end surface 39 being smaller than the area of the upper end surface 12 of distributing portion 35, a neck 38 of body 1 separating lower cylinder space 8 from a space 37 for receiving distributing portion 35 of the sleeve valve, space 37 being connected to lower cylinder space 8 via piston flange channel 43 and openings 40 in sleeve extension 36. High-pressure hydraulic fluid is supplied continuously to lower cylinder space 8 via channel 9. When (as shown) piston 27 is in its lower position and sleeve 34 is in its upper position upper cylinder chamber 8 is drained via aperture 15 in sleeve 34 to outlet line 3. The piston thus moves upwards. The sleeve is maintained in its upper position by the action of high-pressure fluid in space 37 on sleeve shoulder 34. As the piston ascends flange 4 cuts off the supply of fluid to space 37 allowing the high-pressure fluid on upper sleeve portion end surface 12 to lower the sleeve. In this position, Fig. 2 (not shown) high-pressure fluid is supplied to both cylinder spaces 8, 10 and because the upper surface of flange 4 is larger than its lower surface piston 27 is driven downwards to strike tool 2. High-pressure fluid then flows to space 37 to raise sleeve 34 and the cycle is repeated. Gas/ liquid pressure accumulators 19 smooth pressure fluctuations. Space 21 in body 1 is provided to stop the piston's stroke by dashpot action if tool 2 does not resist the blow.
Patent GB-1401329-A (GB)
Title: Self-propelled non-guided missiles
IPC: F42B10/64
Filed: 1972-09-01
Abstract: 1401329 Controlling aircraft SOC EUROPEENNE DE PROPULSION 1 Sept 1972 [3 Sept 1971] 40733/72 Heading B7G [Also in Division F3] A self-propelled non-guided rocket missile 1 has a foldable tail unit 13 close to propellant gas nozzle 12, a gyroscope 33 arranged with its rotor shaft 34 perpendicular to the longitudinal axis of the missile and its rotor driven by a part of the propellant gases, and a lifting aerofoil 19, Fig. 4, located close to the centre of gravity of the missile and mounted on a support member 23 hinged to a shaft 24 perpendicular to the plane defined by the missile axis and the gyroscope rotor shaft 34, the angle of incidence of the aerofoil 19 being controlled by a spring 29. The gyroscope rotor is locked during launching and is subsequently released by a pyrotechnic delay charge (45), Fig. 3 (not shown).
Patent GB-1278406-A (GB)
Title: Cinnamic acid ester derivatives
Inventor: WATANABE TOSHIO
IPC: C07C69/76
Filed: 1970-08-25
Abstract: 1278406 Cinnamic acid esters TANABE SEIYAKU CO Ltd 25 Aug 1970 40734/70 Heading C2C Novel compounds I in which R is phenyl, lauryl, myristyl, cetyl or stearyl; R<SP>1</SP> is H or CH 3 ; R<SP>2</SP> is H or OH; and R<SP>3</SP> is -CH 2 OH when R<SP>2</SP> is OH or R<SP>3</SP> is methacryloyloxy, -CH 2 OH, OH, chloro, chloromethyl or -SO 3 Na when R<SP>2</SP> is H; are prepared by condensing compounds II where X is halo with compounds III in which R<SP>2</SP>' is H and R<SP>3</SP>' is methacryloyloxy, chloro or chloro-methyl; or R<SP>2</SP>' and R<SP>3'</SP> together form -CH 2 O-C(R<SP>4</SP>)(R<SP>6</SP>)-O- in which -C(R<SP>4</SP>)(R<SP>5</SP>)- is the residual moiety of an acetal or ketal; to give compounds IV and if R<SP>2</SP>' and R<SP>3</SP>' form - CH 2 OC(R<SP>4</SP>)(R<SP>5</SP>)-O- eliminating the residual acetal or ketal moiety; or, if desired, where R<SP>3</SP>' is chloro or chloromethyl, hydrolysing the chlorine atom to OH or the chloro-methyl group to hydroxymethyl. Compounds IV where R<SP>2</SP>' and R<SP>3</SP>' form -CH 2 -O-C(R<SP>4</SP>)(R<SP>5</SP>)-O -are isolated as intermediates. Pharmaceutical compositions useful as hypolipemic agents comprise a compound I together with a suitable carrier or diluent.
Patent GB-408293-A (GB)
Abstract: 408,293. Cooling-chambers. TRIGGS, W. W., 57, Lincoln's Inn Fields, London.- (Long Co., W. E.; 155, North Clark Street, Chicago, U.S.A.) Aug. 30, 1932, No. 6126/34. Divided on 408,278. [Class 29.] Hot bakery products from an oven 11 are placed on racks 16 running on tracks 40 which pass through an elongated chamber 15 containing a cooling atmosphere conditioned as to moisture content and sterilized, this atmosphere being supplied to the chamber at the exit end for the bakery products so that it must flow over the substantially cooled products before it reaches those hot from the oven. The air may be driven into the chamber by a fan. Air leaking between doors 27 and 28 at the exit for the bread serves to maintain a conditioned atmosphere in chamber 50 in which the bread is sliced and wrapped before it passes into the outer air as described in Specification 408,278. The tracks 40 are inclined in the chamber 15 so that the racks 16 may move through under the influence of gravity.
Patent GB-1130405-A (GB)
Title: Improvements in or relating to rotary piston internal combustion engines
Inventor: TAUSCH WINFRIED
IPC: F02B53/00
Filed: 1966-09-14
Abstract: 1,130,405. Rotary-piston I.C. engines. SACHSENRING AUTOMOBILWERKE ZWICHAU VEB. Sept 14, 1966, No.41024/66. Heading F1F. A rotary-piston I. C. engine of the trochoidal n and n + 1 lobe-type comprises two pistons on a common power-output shaft 9, Fig. 2, and separated from each other by a common side-wall containing a bifurcated inlet-passage 19 wherein a throttle valve 18 is lodged adjacent an inlet pipe 5 that extends between a single-stage carburetter 4, the passage aforesaid and further inlet passages 16 in the peripheral walls of a housing for the pistons, of which housing the said side-wall is a part, the passages 16 being furnished with throttle valves 15 that are coupled to each other, the valve 18 and a regulating device 11, Fig. 1, by a link 14. The device 11 is preferably in the form of a link having two arms 12, 13, the arm 12 being coupled by a link 10 to a centrifugal governor 7 that is driven by the shaft 9 through a shaft 8, and the arm 13 being coupled by a linkage system 2, 6 to a throttle valve 3 in the carburetter 4 and an accelerator foot-lever or pedal 1. When the engine is idling, the valve 18 is in an open position whereas the valves 15 are in closed positions; and, when the pedal 1 is depressed, the valve 3 is rendered at least partially open and the device 11 is moved by the link 6 and the governor 7, according to the speed of the shaft 9, so that the valves 15, 18 move towards open and closed positions, respectively. If the speed of the shaft 9 decreases during fullload operation, the governor correspondingly effects adjustment of the valves 15, 18. The object of this arrangement is to improve the charging of the working chambers of the engine at low speeds or partial loading. The invention is not restricted to an engine having a plurality of pistons, and inlet passages may be formed in both of the side-walls associated with the or each piston.