baber/WOPTO huggingface dataset:
Patent GB-124614-A (GB)
Title: Electric Starter for Internal Combustion Engines.
IPC: F02N15/06
Filed: 1918-04-25
Abstract: 124,614. Questa, G., and Officine Elettro Meccaniche. April 25, 1918. Turning-gear.-The shaft b of the starting pinion g is in screw-threaded engagement at c with the hollow armature shaft a, and is acted on by an electro-magnetic or mechanical brake i to ensure axial displacement of the pinion when the motor is driven. The brake disk i is slidably keyed on the shaft b, and in the form shown it is held by a solenoid in engagement with a fixed member o. The motor and solenoid are controlled by a hand-actuated switch, which in three successive positions (1) supplies current to the motor through resistances, and to the solenoid: (2) supplies full current to the motor only; and (3) supplies the motor only through the resistances, assisting the automatic disengagement of the pinion g. There are three such resistances, which are cut in and out successively.
Patent GB-657857-A (GB)
Title: Drapery shaping devices
IPC: D06J1/00
Filed: 1949-03-14
Abstract: 657,857. Suspending curtains. WALTERS, B. March 14, 1949, No. 6982. Convention date, March 16, 1948. [Class 52 (v)] A device for pleating curtains comprises a tubular member 15 having two slots 17. Extending into the tubular member is a clip 16 consisting of a pair of outer legs 19 with projections 26 which engage the slots 17, a pair of intermediate legs 20 and a third pair of legs 21. The legs 19, 20 provide a clip which grips the material around the tubular member. A hook is inserted through the connecting portion of the legs 21 for supporting the tubular member. According to a modification two separate clips may be used.
Patent GB-1451418-A (GB)
Title: Gastrointestinal aspirator pump
IPC: A61M1/00
Filed: 1974-02-15
Abstract: 1451418 Gastrointestinal aspirators; catheters J R ROSS 15 Feb 1974 [20 Feb 1973] 7003/74 Heading A5R A gastrointestinal aspirator comprises a tube 20, Figure 1, for insertion into the gastrointestinal tract, the tube having lumens 22, 24, Figure 2, each lumen having at least one opening at 29, 33 respectively, openings 33 serving to withdraw fluid from the tract under suction from a pump (60), Figure 5 (not shown), and the opening at 29 serving to inject gas into the tract under pressure from the pump to clear away membrane and debris from the openings at 33. Pump (60) is coupled to a control mechanism 10, the mechanism including valves for controlling the supply of gas under positive pressure to lumen 22 and suction to lumen 24, the arrangement being such that pressure only is applied to lumen 22 and suction only is applied to lumen 24, the pressures being applied alternately and each only in the absence of the other. The durations of the positive and negative pressure cycles may be set by time duration switches 56. 58 respectively, corresponding pressures being indicated on gauges 44, 46. each gauge having an adjustable excess pressure switch controlling an alarm (not shown) which is rung if the safe pressure is exceeded. The durations of the positive and negative pressure cycles are independently adjustable within the ranges 1-10 seconds and 0.1-10 seconds respectively. A vessel 18 connected by lines 14 and 16 to the control mechanism 10 and to the tube 20 collects the withdrawn contents of the gastrointestinal tract. Tube 20 may be made of rubber, polyvinylchloride or polyethylene, and a metallic slug may be located at its end for X-ray identification. If a plurality of openings at 29 or 33 are provided, they are disposed along the length of the tube 20 with respective openings at 29, 33 in alignment. The lumens of the tube 20 may be eccentrically disposed, as in Figure 2, or in another form, Figure 3 (not shown) positive and negative pressure lumens (38), (36) are concentric, lumen (36) being on the interior, with the lumens connected by webs (42). In a third embodiment, Figure 4 (not shown) an additional lumen (92) is provided for connections to pressure, pH, or temperature sensing instruments positioned within the tube. The aspirator may operate in various modes controlled by switches 48, 50, 52, 54. When switch ("Standby-Activate") is in the "Standby" position, the valves connect the positive and negative pressure lines to atmosphere and the pump then operates without load: in the "Activate" postion, positive and negative pressures pass through the lumens 22, 24 respectively. When switch 52 ("Pressure Control") is activated, the positive pressure line is vented to atmosphere, so that only negative pressure is applied to the gastrointestinal tract via lumen 24. When switch 54 ("Manual Purge") is activated, a constant positive pressure is applied through lumen 22, and the negative pressure line is vented to atmosphere, forcing fluid up through the negative pressure lumen 24 without suction being applied thereto.
Patent GB-573907-A (GB)
Title: Improvements in or relating to light polarizing dichroic material and the manufacture thereof
IPC: G02B5/30
Filed: 1943-05-04
Abstract: 573,907. Light-polarizing glass. STEVENS, A. H. (International Polaroid Corporation). May 4, 1943, No. 7036. [Class 97 (i)] [Also in Group XXIII] Light-polarizing dichroic glass is made by subjecting glass containing finely-divided metal to a substantially uniform stretch or other deformation such as compression whilst it is at a temperature at which it will stretch but not flow. The metal may be introduced as a compound, for example lead oxide, which is subsequently, wholly or in part reduced by heating the glass. Glass containing lead polarizes throughout substantially the whole visible spectrum, but gold or other metals may be used to produce dichroism and polarization through restricted wavebands.
Patent GB-142771-A (GB)
Title: Improvements in yarn treating mechanism
IPC: D06B5/20
Filed: 1920-03-08
Abstract: 142,771. Going, W. J. March 8, 1920. Circulating fluids through materials.-Relates to apparatus for washing, scouring, dyeing, or otherwise treating yarns in skeins, and consists in apparatus wherein the skeins are maintained submerged in the treating-liquid, and are mounted on supports through which the liquid is actively circulated, the supports being mounted on a yarn rack which acts as a conduit for the liquid. A rectangular tub 1 is provided with two conduits 6, 7 having upturned sockets 9, 10 adapted to receive the down-turned ends 38, 39 of a tubular yarn rack 34, guides 35 on which engage between guides 2 in the tub when the rack is lowered on chains engaging eyes 36. A horizontal propeller shaft 11 extends through the conduits 6, 7 and passing through a liquid-tight gear-casing 21, having a cover 22, is driven through bevel gearing from a counter-shaft 24 driven by a main shaft 27 having tight and loose pulleys 30, 31. The shaft 11 carries centrally a paddle-wheel 13, which circulates liquid transversely between partitions 54, propellers 19 in the conduits to drive liquid towards the ends of the tub, and also propellers 15, 16 at the ends of the tub to drive liquid towards the centre. The rack 34 has uozzles 41 at each side in which are removably fitted troughshaped yarn supports 45 to conduct liquid from the conduit to the yarn. Locking-rods 50 mounted between bearings 43 and bearings in removable end caps 46 prevent the skeins from floating off the supports. A removable foraminous floor 52 is spaced above the conduits 6, 7. The liquor in circulation is continuously agitated with sufficient force thoroughly to penetrate the yarn without subjecting it to strain. A steam heating pipe 55 may be provided and also a cover, including leaves 56, hinged to a beam 57 on the rack 34.
Patent GB-1179527-A (GB)
Title: Improvements in and relating to Angular Deflection Springs
IPC: F16C11/04
Filed: 1968-02-13
Abstract: 1,179,527. Elastomeric torsion springs. CONTRAVES A.G. 13 Feb., 1968 [22 March. 1967], No. 7060/68. Heading F2S. Four elastomeric springs-each of which is of the kind comprising inner and outer rectangular section sleeves 1a-2a, 16-26 &c. whose relative rotation is resisted by a set of compressible elastomeric rods 3a, 3b &c.-are mounted on two shafts and connected in series by flexible bands 11 attached to the pairs 1a 1b and 1c, 1d of outer sleeves and by a shaft A2 which is keyed to the inner sleeves 2b and 2c. The inner sleeve 2a is rotatable on a shaft A1 and the inner sleeve 2d is releasably secured to the same shaft. When the sleeve 2d is so secured a load (e.g. an instrument carried by a platform A<SP>1</SP>) which is attached to the inner sleeve 2a is supported against angular displacement by the four springs acting in series. Fig. 3 (not shown) depicts a suitable (known) mechanism for actuating the releasable coupling 24-51 between the shaft A1 and sleeve 2d. This mechanism is operated by a lever 6.
Patent GB-1444332-A (GB)
Title: Electrical machines
IPC: H02P6/06
Filed: 1974-02-15
Abstract: 1444332 Automatic control of speed and current FUJI ELECTRIC CO Ltd 15 Feb 1974 [16 Feb 1973] 7077/74 Heading G3R [Also in Division H2] To reduce differences between the currents in the stator windings 1 to 4 of a brushless motor, caused for example by different amplification coefficients of the switching transistors T1 to T4 respectively controlled by Hall-effect elements H1, H2 through triggering transistors T11 to T14, the winding currents are sensed by resistors R9, R11 which apply corresponding voltages to control transistors T5, T6 whose bases receive from a voltage divider R4, R10 a voltage representative of a desired winding current, whereby a change of winding current from the desired value causes a change in the conductivities of transistors T5, T6, T11 to T14 and T1 to T4 to restore the current to its correct value. Operation is described for a current amplification coefficient of transistor T1 higher than that of transistor T2, with current flow through the windings 1 to 4 for periods of 180 electrical degrees Fig. 3 (not shown). In the case of current flow for periods of 90 electrical degrees, Fig. 4 (not shown), the windings are all connected to a common resistor (R13) controlling a single transistor (T7) controlling all the triggering transistors T11 to T14 Fig. 2 (not shown). One or both of the resistors R4, R10 may be variable to alter the set value of winding current. Also the motor speed may be controlled by connecting a speed-dependent voltage to the base of the control transistors T5, T6, (T7). Reference has been directed by the Comptroller to Specification 1359737.
Patent GB-1034896-A (GB)
Title: Hydroquinone
IPC: C07C39/08
Filed: 1964-02-20
Abstract: Hydroquinone is made by introducing a p-dialkylbenzene-bis-hydroperoxide in which the alkylhydroperoxy groups have the formula <FORM:1034896/C2/1> where R and R1 are alkyl groups containing from 1 to 4 carbon atoms, and a primary solvent for the by-products of the reaction but not for the hydroquinone into a solution of an acid catalyst in the primary solvent or a secondary solvent for the hydroquinone, neutralizing the acid catalyst, filtering off the salt thus formed, separating the secondary solvent, if used, and ketone formed by distillation and rectification and separating the undissolved hydroquinone from the remaining solution by mechanical means.  The primary solvent may be an aromatic hydrocarbon such as benzene, toluene or xylene.  The secondary solvent should have a boiling point lower than that of the primary solvent.  Acetone, methylethylketone, other ketones, alcohols or ethers may be used. The catalyst may be sulphuric, phosphoric, perchloric, or p-toluene-sulphonic acid, HBF4, H2SiF6 or BF3.
Patent GB-471436-A (GB)
Title: Improvements relating to brake mechanisms
IPC: B60T8/26
Filed: 1936-03-10
Abstract: 471,436. Brakes. PRATT, J. H., MANLEY, G. E., and GIRLING, A. H. G. March 10, 1936, No. 7167. [Class 103 (i)] Mechanism for distributing braking effort between the front and rear wheels of a vehicle comprises a pedal 5 mounted on a fixed pivot 5a and by means of a link 7 operating a distribution member 8, connected to the front brakes by a rod 9 and to the rear brakes by a rod 11. The member 8 is formed of two parallel plates supported by means of a roller 15 in a slot 14a in a plate 14 which is supported at one end by a spring 18. The slot 14 has two cam surface 14b, 14c over which the roller 15 moves during brake application. The lever 14 is fulcrumed to a bracket 16 by means passing through a slot 8a in the lever 8. These means carry a projection 14a to which is attached one end of a spring 17 connected to the brake pedal and adapted to maintain a tension in the brake system. A hand lever operates the rear brakes by means of a lever 20.
Patent GB-894418-A (GB)
Title: Nuclear reactor fuel exchange arrangements
IPC: G21C19/22
Filed: 1960-03-01
Abstract: 894,418. Reactors; handling fuel elements. ALLMANNA SVENSKA ELEKTRISKA A.B. March 1, 1960. [March 4, 1959], No. 7175/60. Class 39(4) A gas-cooled reactor 1 has a number of sockets 19 in its cover 4 normally sealed by plugs 20 to which fuel elements 21 are attached by bolts 22. A water tank 5 covers the reactor 1 and two chambers 7, 8, the chambers being defined by the reactor shielding 3, a wall 9 and a partition 10. Gates 11 in the wall 9 connect the chambers 7, 8 with further chambers 12, 13, the chambers 7, 12 being filled with water to a level above the height of the gate. To refuel the reactor a charging machine 17 is moved above the selected socket 19, the machine having a pressure vessel which is pressurized at the reactor gas pressure. The lower end 25 of the machine is screwed on to the socket 19 and a slide valve 31 is opened. A key 28 is lowered into a hexagonal cavity 23 of the plug 20 and rotated whereby the plug may be unscrewed. Pawls 30 in the key are moved outwards to engage an annular slot 24 so that the plug together with the fuel elements. may be hoisted into the machine 17. New fuel elements and a plug which have been previously stowed in the machine are then lowered and the plug screwed into position. The valve 31 is closed and the machine 17 moved above a socket 15 to which it is screwed. A valve 16 in the socket 15 is opened and the spent fuel elements are lowered into a container 14, the container then being lowered and moved through the gate 11 into the chamber 12. New fuel elements are introduced into the machine through the chambers 13, 8, the machine being screwed to a socket 15<SP>1</SP> having a valve, this socket being situated in the floor of the tank 5 above the chamber 8. The new fuel elements are manually attached to the key 28.
Patent GB-1028222-A (GB)
Title: Improvements in and relating to impregnation and preservation of wood
IPC: B27K3/32
Filed: 1963-02-22
Abstract: Wood is preserved by providing the wooden body with at least one bore channel or hollow space provided with closing or sealing means and introducing into the bore channel or hollow space a liquid mixture which has been formed by mixing from 35 to 50 parts by weight of a solid boron compound having pesticidal or wood preservative properties e.g. boric acid and 65 to 50 parts by weight of a solid fluorine compound having pesticidal or wood preservative properties e.g. ammonium difluoride, without the addition of water or other solvents.  The liquid mixture may contain additional known fungicidal, insecticidal, bactericidal or fire resistant solid substances in an amount that the mixture remains pourable after stirring e.g. phosphorus pentoxide, arsenic pentoxide, chromic acid or ammonium silicofluorides.  The wooden body may have a central bore and a transverse filling channel. The central bore may be devided by a stopper to provide a 15 cm channel in the earth air zone.
Patent GB-773500-A (GB)
Title: Improvements in or relating to endless belt units
Inventor: SEED JOHN BRYAN
IPC: B65G39/16
Filed: 1954-03-12
Abstract: 773,500. Endless conveyer belts. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 24, 1954 [March 12, 1954], No. 7231/54. Class 78 (1). An endless belt having a driving roller 1 is maintained in its correct position by mounting its idler terminal roller 3 on slidably-mounted bearings 5, 5<SP>1</SP> flexibly attached to the rods of pistons operating in fixed cylinders 7, 8, these cylinders being supplied with fluid under a suitable pressure to provide the desired belt tension by a pipe-line 9 and being connected respectively to a reducing valve 13 and a restricting valve 12. When the belt wanders laterally, its movements are followed by a roller on an arm 15 whereby the arm turns about an axis substantially normal to the belt so as to alter the opening of an exhaust valve 14 connected to the cylinder 8 and effect swivelling of the roller 3 to correct the lateral movement of the belt. Variation in pressure for effecting the movement of the roller 3 may be provided in both cylinders by duplicating the controlled leak arrangement of exhaust valve and restricting valve.
Patent GB-1375804-A (GB)
IPC: B23Q11/06
Filed: 1973-02-14
Abstract: 1375804 Machining guards; securing grinding wheels on shafts CENTRO-MASKIN I GOTEBORG AB 14 Feb 1973 [14 Feb 1972] 7241/73 Headings F2J and F2U A fixed grinding wheel hood 13 welded to a bearing case 1 of a machine frame (not shown) has an end plate 15 axially spaced from a grinding wheel 19 and formed with an opening 18 which, in service, is covered or closed by a projection 10 of a flanged sleeve 6 forming part of a clamp securing the grinding wheel 19 to a driving shaft 2, the projection 10 sealing the opening 18 to prevent pieces of grinding wheel being flung out in the event of the grinding wheel bursting. The grinding wheel 19 is clamped between the flanged sleeve 6 and a further flanged sleeve 5 by removable screws 11, the sleeve 5 being retained on a tapered driving shaft 2 by a nut 12, such that removal and/or replacement of the wheel 19 is readily effected by removal of the sleeve 6 via opening 18, the spaced end plate 15 facilitating removal &c. of the wheel 19, as shown chain dotted.
Patent GB-949398-A (GB)
Title: Construction of thermionic valves
Inventor: STADDON JAMES FREDERICK
IPC: H01J19/50
Filed: 1961-03-01
Abstract: 949,398. Welding by pressure. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 19, 1962 [March 1, 1961], No. 7478/61. Heading B3R. An electrode lead 4, 5 of a thermionic valve or the like is welded to a stem wire 2 extending through the valve base 1 by producing a potential difference between the lead 4, 5 and the wire 2 and bringing them together. Condensers  charged to the same voltage and of capacities suitable to the leads 4, 5 and wires 2 across which they are connected produce the welding current. The leads 4, 5 and wires 2 are welded in a single operation by spacing the electrode assembly 3 and the base 1, the required distance apart and rotating the assembly 3 and/or base 1 until all welds have been made. The leads 4 or the wires 1 may be made more resilient by bending their ends.
Patent GB-559779-A (GB)
Title: Process for producing alkylated aromatic compounds
IPC: C07C2/68
Filed: 1942-06-03
Abstract: 559,779. Alkylating hydrocarbons. UNIVERSAL OIL PRODUCTS CO. June 3, 1942, No. 7523. Convention date, June 25, 1941. [Class 2 (iii)] Aromatic compounds are alkylated by an olefinic hydrocarbon in presence of a solution of a metal halide of the Friedel-Crafts type dissolved in a nitroparaffin, e.g. aluminium halide dissolved in nitromethane, nitroethane, or nitropropanes. Olefines may be ethylene, propene, butenes, olefine polymers, diolefines, and cyclic olefines, or olefine producing substances such as alcohols, ethers, esters, or alkyl halides may be used. The process may be made continuous and olefine diluted with aromatic hydrocarbon may be introduced at a number of points throughout the reaction zone. Examples are given of the preparation of ethyl, isopropyl, di-isopropyl, and tertiary butyl benzene, alkylated naphthalenes, and propylated dibenzyles.
Patent GB-1130694-A (GB)
Title: Improvements in and relating to direct current motor control apparatus
Inventor: IGARASHI YOSHIAKI
IPC: H02P3/12
Filed: 1967-02-16
Abstract: 1,130,694. Automatic speed control. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. Feb. 16, 1967 [Feb. 16, 1966; May 7, 1966], No. 7534/67. Heading G3R. [Also in Division H2] Automatic tuning of a radio receiver is effected by motor 16 when push-button 40 is closed to render transistor 34 non-conductive. This transistor forms part of a bi-stable circuit which also comprises transistor 33. When the latter conducts, the motor is supplied through power transistor 20. A negative signal applied to the terminal 31 causes the bi-stable circuit to change to its other condition of stability, the transistor 20 being rendered non-conductive, whilst transistor 30 conducts to short-circuit the motor armature for braking. The speed of the motor is detected by connecting its armature in a bridge circuit comprising resistors 21-23, the output of the bridge being amplified by transistor 27 and fed back to the power transistor for speed-stabilisation. A diode 43 is connected between the transistors 27, 34, to ensure complete cut-off of the transistor 20 when the transistor 30 is in the low-impedance condition. In another arrangement, cut-off of the transistor 20 is ensured by a diode connected in series with a resistor between the base of transistor 27 and the collector of transistor 33, Fig. 4 (not shown). According to another embodiment, the transistor 27 is replaced by a two-stage amplifier associated with a diode and feed resistor for temperature compensation. A resistor connected between terminals 14, 24 compensates for variations in supply voltage, whilst a resistor across terminals 18, 24 allows for adjustment of speed. A diode circuit may by-pass signals to the transistor 33 when transistor 34 is conductive to prevent the receiver from becoming de-tuned due to temporary fading of the control signal, Fig. 5 (not shown). In another modification, bi-stable circuit operation is obtained by the addition of one transistor only, the transistor 27 forming part of the bi-stable circuit, Fig. 6 (not shown).
Patent GB-943481-A (GB)
Title: Telephone-answering and message-recording system
Inventor: GOODMAN DAVID MARSHALL
IPC: H04M1/65
Filed: 1960-03-03
Abstract: 943,481. Substation equipment. E. R. SALZBERG. March 3, 1960, No. 7554/60. Drawings to Specification. Heading H4K. Telephone answering and recording equipment including amplifiers comprises single motor which drives a timing switch for controlling operations and two magnetic tapes, one for delivering outgoing messages and one for recording incoming messages. Manuallyoperable switches are provided to connect the line either to the telephone instruments or to the answering equipment, and to enable the subscriber to record a message to be delivered to callers and to hear messages which may have been recorded in his absence.