baber/WOPTO huggingface dataset:
Patent GB-298181-A (GB)
Title: Improvements in or relating to driving gear for aircraft propellers
IPC: B64D27/00
Filed: 1927-07-05
Abstract: 298,181. Gloster Aircraft Co., Ltd., and Waters, S. J. July 5, 1927. Propelling.-An aircraft propeller is carried on a drum rotating on the engine casing or on an extension thereof and provided with internal teeth which mesh with a smaller pinion on a shaft driven by the engine. The pinion 3 is carried by a sleeve 2 on an extension of the engine shaft 1 and the drum 9, with internal teeth 7, rotates on ball bearings 15 on a cylindrical shell 16 secured to the engine casing 17. A bearing 18 is interposed between the shell 16 and the sleeve 2 to support the shaft extension. The drum 9 has a fixed flange 12 and a movable keyed flange 13 between which the propeller is clamped by bolts. Oil is fed to the gear wheels through a pipe 21 and collects in an annular space 23 where inclined vanes 25 on the shell 16 force the oil through holes 24 into the engine casing. A grooved oil ring 26 prevents leakage of oil from the drum 9. In a modification the gearing is incorporated in the engine.
Patent GB-1434362-A (GB)
Title: Electrode structures for use in zinc halogen electric cells or batteries or to zinc halogen electric cells or batteries
IPC: H01M4/62
Filed: 1972-04-18
Abstract: 1434362 Zinc-halogen cells UNIGATE Ltd 17 April 1973 [18 April 1972] 17931/72 Heading H2B In a zinc or cadmium halogen electric cell such as that described in Specification 1,258,502, the halogen electrode comprises a substrate of anodizable metal or metals from Group IVa and Group Va of the Periodic Table which has been etched or heat treated to increase the crystal size or reduce strain, and is provided with a porous carbon coating made by pressing a friable carbon crumb on to the substrate, with a binder. The electrolyte may consist of zinc chloride with an additition of zinc sulphate to improve the plating of the zinc deposit. The cell may be cooled by forming the separators as hollow elements and passing coolant therethrough ; alternatively, a coolant fluid immiscible with the electrolyte is injected into the electrolyte and circulated through the cell the coolant having a specific gravity different from the electrolyte, suitable coolants being carbontetrachloride and sulphur hexafluoride. In another cooling arrangement, a fluorinated hydrocarbon is injected at the bottom of the cell, this liquid evaporating and the vapour being removed from the top of the cell. The carbon tetrachloride may also serve to deliver chlorine to the halogen electrode.
Patent GB-1429749-A (GB)
Title: Multi-ratio transmission
IPC: F16H61/06
Filed: 1974-04-24
Abstract: 1429749 Change-speed control VOITH GETRIEBE KG 24 April 1974 [26 April 1973 16 March 1974] 17946/74 Heading F2D In a multi-ratio transmission in which pressure-fluid operable devices such as brakes or clutches are actuated to effect ratio changes and means is provided whereby two such devices are temporarily simultaneously engaged to give positive engagement overlap during upward changes, the fluid operable devices are controlled by electromagnetically actuated valves governed by electronic circuitry with timing means for each upward change to determine the duration of the engagement overlap. The apparatus described provides also for negative overlap during downward changes. The figure shows part of a control circuit for effecting changes between second and third ratios. An amplifier stage 26 consisting of a voltage comparator receives a reference voltage U L  derived from voltage divider resistors 23, 24 connected across a supply voltage U B , and a control voltage U v  obtained from means responsive to transmission output speed and engine load sensed by throttle position. The voltage U v  may alternatively be dependent on speed alone and the voltage U L  on load. When U v  exceeds U L  the amplifier stage 25 causes a transistor T 1  to become conconductive and energize a solenoid valve 16 which controls engagement of the brake or clutch for third ratio, and at the same time a capacitor 20 is discharged through a resistor 33 and diode 31 so that a voltage U c  applied through a resistor 34 to an amplifier stage 35 drops exponentially to cause the amplifier stage 35 to switch a transistor T 2  to the non-conductive state after an interval determined by the time constant of the components 20, 33. When the transistor T 2  is non-conductive a solenoid valve 15 de-energizes the clutch or brake which establishes second ratio. When the voltage U v  drops, requiring a change back from third to second ratio, the transistor T 1  is rendered non-conductive to de-energize the the valve 16 and, after an interval determined by the time constant of a resistor 32 and the capacitor 20, the capacitor is charged to a degree such that the voltage U c  causes the amplifier stage 35 to switch the transistor T 2  to be conductive and thereby energize the second ratio valve 15. Additional circuit elements may be provided to adjust the duration of overlap in accordance with engine load or transmission output speed.
Patent GB-1373070-A (GB)
Title: Pneumatic actuators
IPC: F15B11/06
Filed: 1973-04-18
Abstract: 1373070 Pneumatic actuators KELOR Ltd 18 April 1973 [19 April 1972] 18030/72 Heading F1D A pneumatic actuator 1, 2, Fig. 1, with return springs 3 has valve means 17, 18 which admit compressed air to a chamber 1 to displace the pistons 2 and load the springs 3 and then, at a selected position of the piston on the return stroke, transfer some of the air to chambers 7 to assist the springs and open the chamber 1 to atmosphere. Each piston 2 has a rack 2A which meshes with a pinion 4 on a shaft 5. The latter may operate a valve and also carries a cam 21 which controls the movements of the piston 18. Means other than the cam 21 may control the valve means 17, 18. When compressed air is supplied to port 16 elements 17, 18 are forced apart to connect chambers 7 to atmosphere via ports 12, 15, Fig. 2 (not shown). Compressed air passes to chamber 6 via ports 16, 13 pushing the pistons 2 apart and turning cam 21 through 90 degrees. When the air supply is cut off and port 16 is connected to atmosphere the shuttle valve 17 is urged by spring 19 into contact with element 18. Chambers 6, 7 are now inter-connected via ports 12, 13 and pistons 2 are urged together by springs 3 causing transfer to air from chamber 6 to chambers 7, Fig. 3 (not shown). When sufficient air has been transferred cam 21 moves elements 18, 17 so that chamber 6 is exhausted to atmosphere and port 12 is closed to trap the air in chambers 7, Fig. 4 (not shown).
Patent GB-665327-A (GB)
Title: Improvements in pneumatic elevators for flour mill stocks
Inventor: WATTS GEORGE
IPC: B65G53/24
Filed: 1949-07-08
Abstract: 665,327. Pneumatic systems. SIMON (HOLDINGS), Ltd., H. June 21, 1950. [July 8, 1949 ; Aug. 8, 1949; Aug. 25, 1949; Sept. 7, 1949; Sept. 7, 1949] Nos. 18085/49. 20545/49, 22099/49, 23154/49, 23155/49. Class 78 (i). A pneumatic elevator for elevating flour mill stock from a machine or machines into which air is drawn by the pneumatic system so that the machine is exhausted and the stock aerated, comprises a vertical or substantially vertical pipe (to the top of which suction is applied) into which pipe the said stock is delivered from said machine together with said air at a point above the bottom of said pipe, the said bottom being either open, or adapted to open, if the suction fails, so as to allow stock to fall out of the pipe and not block the same when the suction fails, the top of the pipe leading to separators for separating stock and dust from the elevated stock and air mixture. Fig. 1. Air is drawn by blowers g and j through flour mill a and open end d so that flour from mill a is aerated and descends pipe b and is blown up vertical pipe c and deposited in filters h and i. Valve n and adjustable flap e allow adjustment of the flow. The flour may be delivered from a to b by screw conveyer : filter h may be horizontal : pipe c may be curved round gently at the top, and filter h may be provided with an expansion box. The pipe or pipes c may ascend up through mill a, the flour passing through a valved aperture into the pipe. The air may also be into pipe b after clearing other flour-treating units. Fig. 7. Aerated flour falls down pipe b, the air escaping through valved pipe S into pipe c and the flour being fed by rotary valve u to a lower part of pipe c and being carried up the pipe c by air entering at pivoted flap e. Valve u may be omitted. Fig. 11. Aerated flour descends pipe b, the air thereof being fed by pipe x to the bottom of pipe c and the flour being fed by rotary valve u to pipe c at a higher point so as to be blown thereby up pipe c, weighted flap y serving to permit outlet of flour from pipe c when the suction fails.
Patent GB-1137472-A (GB)
Title: Apparatus for checking the sealing conditions of hydraulic pistons and the like
Inventor: MITCHELL ALBERT HENRY
IPC: G01M3/02
Filed: 1965-04-30
Abstract: 1,137,472. Joint-making packing; seals. PLESSEY CO. Ltd. 12 April, 1966 [30 April, 1965; 16 July, 1965], Nos. 18278/65 and 30406/65. Heading F2B. [Also in Division G1] A device for checking a seal in hydraulic apparatus having an outlet L for leak flow from the seal S comprises a line section 1 having an inlet 13 and an outlet 14, a metering passage 15 leading from the inlet to the outlet and including a partition 16 isolating said inlet from said outlet, the partition being sealingly movable between a first position (as shown) and a second position spaced from said first position along said passage and a branch passage bypassing said metering passage and including a stop valve 12 operable to prevent flow through the branch passage and bias means for moving said partition towards the inlet when said stop valve is open to by-pass the metering passage. The device is either operated with the stop valve closed for a predetermined time and the distance the partition has moved measured or the amount of time taken for the partition to move a fixed length is measured. The movements of the partition 16 are recorded on an instrument 19 by the movement of or contacts 24 dwion contact strips 21, 22. In another embodiment (Figs. 4 and 5, not shown) the branch passage is coaxial with the metering passage and is formed by a shell 48 surrounding the metering passage 75 and connected thereto by apertures 65, 64. The flow of fluid through the branch passage is stopped by sliding the shell 48 into a position in which it closes aperture 64.
Patent GB-1422735-A (GB)
Title: Apparatus for carrying out differential thermal analysis
IPC: G01K1/16
Filed: 1973-04-16
Abstract: 1422735 D T A apparatus COMMISSARIAT A L'ENERGIE ATOMIQUE 16 April 1973 [20 April 1972] 18320/73 Heading G1N Apparatus for carrying out differential thermal analysis (DTA) at temperatures above 1000‹C comprising two refractory oxide crucibles e.g. beryllia, 1, 2 for the study and reference samples respectively, each crucible resting on an alumina stand or holder 3, 4 respectively, these being a disc 10, 11 of niobium or rhenium diposed in the heat path from each crucible to its stand with respective faces of the disc contacting the crucible and the stand, and thermocouples AB, CD connected in opposition each thermocouple having its hot junction secured by a non-welded connection to that surface of a respective disc which contacts the stand. The hot junction is crimped in a hollow, cylindrical projection 12, 13 of respective discs and the thermocouples are of tungsten alloyed with 5% rhenium (arms A, C) and with 26% rhenium (arms B, D). Alternatively the thermocouples may be of platinum (arms A, C) and platinum-10% rhodium (arms B, D). As in Figure 1 the disc and crucible fit into the stand but in an alternative embodiment, Fig. 3 (not shown), each disc fits into a recess in the bottom of a respective crucible. The rate of temperature change is adjustable between 50‹C and 300‹C per hour.
Patent GB-799132-A (GB)
Title: Improvements in or relating to circuits for use in television receivers
IPC: H04N5/213
Filed: 1955-06-24
Abstract: 799,132. Television. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 24, 1955 [June 29, 1954; Oct. 14, 1954], No. 18337/55. Class 40 (3). [Also in Group XL (c)] In an impulse noise suppressor for a television picture receiver, a band of the higher signal frequencies is selected from the I.F. spectrum on the assumption that the signals in this band are due more to interference pulses than to picture signals and such signals are separately demodulated and used either to gate the synchronizing pulse separator (in the case of negative modulation) or to " black spot " the C.R.T. (in the case of positive modulation). The whole sideband is assumed to be 5 Mc/s. wide; the frequency band selector is centred approximately 3 Mc/s. from the carrier and has little or no response to frequencies lower than those corresponding to the 20th harmonic of the line scan frequency. In one embodiment, Fig. 2, for negatively modulated signals, the output of the last I.F. amplifier 5 is passed to a detector 7, amplifier 14, and hexode 20 which passes only the positive-going synchronizing pulse (plus interference pulses). Additionally, the amplifier 5 is coupled to a tuned circuit 23 having the response above defined and to an anode-bend detector 26 which provides a gating pulse to cut off the hexode 20 on the occurrence of an interfering signal pulse. A standing bias is also applied via resistor 30 to delay the application of the gating pulses. In a modification, Fig. 3 (not shown), for positive modulation, the cathode-ray tube is conventionally cathode modulated and the output of the anode bend detector is applied to the grid to act as a " black spotter." In second embodiment, Fig. 5 (not shown), again for negative modulation, the gating signal for the synch. separator is derived by anode-bend detection of the output of a filter passing a band of frequencies between 2 Mc/s. and 4 Mc/s. from the carrier.
Patent GB-426321-A (GB)
Title: Improvements in building plates and process of manufacturing same
IPC: C04B28/18
Filed: 1933-06-28
Abstract: Plates for building purposes are manufactured from asbestos fibre, lime, and a mineral binding agent.  The plates preferably contain a large proportion of lime, which is introduced as such, or in the form of materials which contain it in the free state such as cement waste which has stood for a length of time under water.  In an example a plate is made from a composition comprising 25 per cent asbestos, 30-40 per cent lime, and 30-40 per cent active silica.  The plates may be manufactured in the same manner as fibro-cement plates in a cardboard-making machine.
Patent GB-414884-A (GB)
Title: Improvements relating to electric clocks
IPC: H02K7/02
Filed: 1933-06-28
Abstract: 414,884. Motor driving arrangements. GENT & CO., Ltd., and SWIFT, R., St. Saviour's Road, East Leicester. June 28, 1933, No. 18407. Addition to 385,457. [Class 35.] The flywheel of a clock motor has, in addition to a limited angular movement about the rotor spindle as described in the parent Specification, a limited movement along the spindle. The flywheel 13 is mounted on a screwed portion 12 of the spindle 7 of the rotor 12 and moves thereon, its motion being limited by a pin 14 on the flywheel coming into contact with a stop 15 on the spindle, so that it has an angular play of nearly 360‹ and corresponding longitudinal play.
Patent GB-497968-A (GB)
Title: Improvements relating to fireplaces
IPC: F24B1/193
Filed: 1937-07-02
Abstract: 497,968. Fuel economizers. BELL, L. A. July 2, 1937, No. 18409. [Class 126] In a fuel-economizing appliance comprising a back plate or brick 1, 2 and two side plates or bricks 5, 6 attached to the back plate or brick at a variable angle, the adjacent edges of the side and back plates or bricks have slotted lugs 4, 7 through which pass screw bolts or the like to connect the plates or bricks. The back plate or brick is in two parts 1, 2 connected by a bolt 3, one part 2 having a slot through which the bolt passes so that the width of the back plate can be varied. In addition to the upper lugs 4, the back plate has lower lugs to which the lugs 7 on the side plates can be attached, so that the bottom of the back plate is above the bottoms of the side plates. This arrangement is used in a fireplace with a back boiler. The side bricks or plates have top and side flanges 5b, 6b and the back plates have top and bottom flanges.
Patent GB-483064-A (GB)
Title: Improvements in or relating to electrical switches, torches and the like
IPC: H01H15/18
Filed: 1936-07-02
Abstract: 483,064. Retractive switches. EVER READY CO. (GREAT BRITAIN), Ltd. July 2, 1936, No. 18426. Void. Convention date, July 2, 1935. [Class 38 (v)] A switch particularly for a battery lamp comprises a contact spring 10 fixed by a rivet 42 to the casing and adapted to be pressed by a button 38 into engagement with the based end 30 of a conductor 22. If the button 38 is moved to the left when depressed, a shoulder 40 on the button engages under the casing and the switch is latched in the operated position. The rivet 42 passes through an elongated slot in the casing which permits the head of the rivet to be moved to the right thus moving the blade 10 so that its end is out of range of the contact 30 and so the switch is rendered inoperative. Excessive deformation of the strip 10 is prevented by an abutment 32.
Patent GB-372142-A (GB)
Title: Wheel set for conveyor trucks
IPC: B60B37/04
Filed: 1931-06-25
Abstract: 372,142. Spring supports for bearings. THIELMANN, P., Silschede, Westphalia, and PEYINGHAUS, W., (trading as EISENUND STAHLWERK W. PEYING- HAUS), Egge, near Volmarstein, Ruhr, both in Germany. June 25, 1931, No. 18446. [Class 12 (i).] To relieve the.roller bearings 6 of a railway truck axle from pressure due to axial thrusts, the bearings are disposed within a housing or bushing 7 which surrounds the axle 1 and between which and internal shoulders 15 on the axle casing 2 are disposed compression springs 5 that permit the housing a sliding movement within the casing. On its inner side the housing is closed by a ring 8 and on its outer side by a cover 9 against which the hub of the wheel 3 bears, while a pacliing gland 10 prevents access of dirt or water to'the bearing.
Patent GB-918701-A (GB)
Title: Apparatus and method for controlling remotely operated dictation equipment
IPC: G11B15/02
Filed: 1960-05-25
Abstract: 918,701. Dictating apparatus; backspacing. DICTAPHONE CORPORATION. May 25, 1960 [May 27, 1959], No. 18477/60. Class 40 (2). [Also in Group XXXIX] In an improvement of the apparatus described in Specification 914,069, the 100 c/s. control tone 46 is recorded simultaneously with the dictation 44 in the same track 72 of a twotrack tape and the start and finish of each section of recording is marked by a 2 sec. gap in both signals. During the marking period, the 100 c/s. tone is fed to a loud-speaker to indicate that recording is not possible. On playback or back- or forward-spacing, the total signal is fed to a circuit (Fig. 2, not shown) which operates solenoid means to stop the tape when the signal fails, the control tone maintaining tape drive when pauses occur in the dictation. On playback, the signal, with the control tone filtered out is passed to an earpiece. The tape is carried in magazines as described in Specification 841,586.
Patent GB-652064-A (GB)
Title: Improvements in and relating to air heaters
IPC: F26B21/00
Filed: 1948-07-09
Abstract: 652,064. Air-heating furnaces. TYNESIDE FOUNDRY & ENGINEERING CO., Ltd., and STRAUGHAN, G. N. July 9, 1948, No. 18516. [Classes 64(i) and 64(iii)] In an air heater comprising nests of externally heated air tubes a in heat-insulated boxes b on each side of a furnace c, and separate fans h, m drawing the combustion gases from the furnace downwards through the boxes and delivering air to the tubes under higher pressure than those gases, the air-heating tubes are of flat section, the opposite longer sides of the sectional shape of the tubes being straight and parallel to each other and the opposite shorter ends of the section being curved, and the major internal diameter of each tube being at least twice its minor internal diameter, which is preferably not more than three-quarters of an inch. The major internal diameter may be four inches.
Patent GB-1025406-A (GB)
Title: Sealed magnetic contact unit
IPC: H01H51/28
Filed: 1963-05-10
Abstract: 1,025,406. Electromagnetic relays. STANDARD TELEPHONES & CABLES Ltd. May 10, 1963 [May 12, 1962], No. 18573/63. Heading H2B. At least one reed of a sealed magnetic reed contact unit is twisted between its contact end and its sealing point in its protective enclosure so that it will engage its co-operating reed at an angle, as in Fig. 4 (not shown), with consequent wiping. The reeds may initially be inclined to one another and both reeds may be twisted.
Patent GB-167945-A (GB)
Title: Improved lifting truck or trolley
IPC: B62B3/06
Filed: 1920-07-05
Abstract: 167,945. Koecher, O. J. July 5, 1920. Addition to 117,874. Hand-trucks.- To the operating-lever 5 of the lifting-truck described in the parent Specification is pivoted a latch or catch 16 which engages with a pin 17 on the pivoted hook 11 to hold it out of engagement with the eye 3 on the lifting- frame 2. A rearward extension 18 of the catch 16 is depressed to disengage the hook 11 and to allow it to fall and engage the eye 3.
Patent GB-1086837-A (GB)
Title: Control device for grinding and fluting machines
Inventor: MITTLACHER HERBERT
IPC: B02C4/30
Filed: 1966-04-28
Abstract: 1,086,837. Grinding. MUHLENBAU DRESDEN, VEB. April 28, 1966, No. 18641/66. Heading B3D. A device on a grinding and fluting machine for controlling the grinding of the twist in the fluting of a mill roll for grain milling comprises two anti-friction bearings 8, 8<SP>1</SP> running independently of one another and fitted on a journal 9, the bearings acting as a guide element engaging a groove 3 in a guide straight edge 4, one bearing engaging one side of the groove and the other bearing engaging a slide rail 12 on the other, wider side of the groove. The straight edge is rotatably adjustable about its mid-point to determine the degree of twist of the mill roll and is supported on a rest 2 on the bed 1 of the machine which has a carriage 5 for bearings 6 for the mill roll. The device 7 is movable during reciprocation of the carriage, in the direction of the arrows to effect the twist by movement of the guide element which engages the groove and consists of the journal 9 on which are the bearings 8, 8<SP>1</SP>. The groove 3 is formed in the straight edge and bearing 8 engages cheek 11 while bearing 8<SP>1</SP> engages the rail 12 which is adjustable by means of screws 15 on the cheek 11<SP>1</SP>.