baber/WOPTO huggingface dataset:
Patent GB-450874-A (GB)
Title: Improvements in and relating to shutters in or for x-ray tube installations
IPC: G21K1/04
Filed: 1935-01-29
Abstract: 450,874. R÷ntgen -ray apparatus. BANCROFT, F. E., 19, Delaine Road. Withing- ton, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Jan. 29, 1935, No. 2961. [Class 98 (i)] The opening and closing movements of an X-ray shutter are controlled by a flexible transmission member extending from the shutter to an electro-mechanical actuating means, the latter having electrical control means including a control member at a position outside the X-ray chamber. The applicator cylinder 1 has a box-like frame of brass or steel 3, and a pair of guide channels 4 secured thereto. The shutter, which comprises steel plates 5 with lead sheets 7 between, is secured to bars 6 which slide in the channels 4. A yoke 12 is secured to the ends of the bars 6, and to the inner cable 13 of the Bowden wire by means of an anchoring block 14. The outer sheath 15 of the Bowden wire is secured. to an anchoring bar 16. Helical springs 18 secured to the yoke 12 by pegs 20 actuate the shutter to its closed position. Indicating switches, e.g. 21, may be mounted on the guide frame 4 and may have their contact members actuated by engagement with the slide bars 6, a depression 24 in the latter closing the switches when the shutter is closed. The switches may also operate aural indicators. An electric motor 26 with reducing gear 27 rotates the output shaft 29 which has a crank 30 and block 32 secured to the end of the cable 13 operating the shutter. The outer sheath 15 of the cable is adjustably anchored to a block 34. A friction brake comprising friction discs 44, 45 and operated electromagnetically, is connected in the energizing circuit of the motor, springs 52, 54 applying the brake when the motor is unenergized. The shaft 29 carries an insulated cam 35 which co-operates with spring members 36, 37 carrying contacts co-operating with contacts on fixed members 39, 40. The contacts 36, 37 and 39, 40 under the action of the cam 35 constitute limit switches, which de-energize the motor and the coil 51 at the extreme positions of the shutter. Push buttons are connected across the contacts to short circuit the limit switches and start the motor. An electric or other time switch may control the period of operation of the shutter. Interlocks ensure proper closing of the shutter, the resetting of the time switch and its operation upon failure of the current. Specification 415,723 is referred to.
Patent GB-162757-A (GB)
Title: Improvements in machines for mixing and aerating materials for cakes and like goods
Inventor: DAWKINGS VANSON WILLIAM
IPC: B01F29/83
Filed: 1920-01-30
Abstract: 162,757. Dawkings, W. V. Jan. 30, 1920. Rotary batch-mixers ; stationary batch-mixers with stirrers having complex motions.-In a cake or like mixing-machine, the stirring-blades h are set obliquely, as shown in Fig. 2, with a view to aerating the batch. The pan a may be rotary or stationary. The stirring-spindle i is mounted in a frame j, which can be rotated by hand about the main spindle l, as shown by broken lines. The spindle i may be moved axially by a handle n.
Patent GB-701218-A (GB)
Title: Weighing mechanism
IPC: G01G3/08
Filed: 1951-02-07
Abstract: 701,218. Weighing apparatus. WESTWOOD, W. C. C., WESTWOOD, H. W., and WILFLEY MINING MACHINERY CO., Ltd. Feb. 7, 1952 [Feb. 7, 1951], No. 3029/51. Class 143 In a spring balance for weighing loads suspended from a crane hook, the spring consists of two flat, parallel strips linked at their ends and loaded at their centres. A rigid frame 23, 25, 39, assumed to be supported, supports an upper spring steel strip 30 linked by pivoted links 32 to a similar strip 31. The load is applied to the lower strip by a rod 47, knife-edge 45 and stirrup 42. The deflection of the lower strip 31 (equal to twice the deflection of a single strip) is indicated by a dial pointer driven through gearing 52, 51, from a linkage 49, 48 connected to the strip 31. A cumulative total may be obtained from a revolution counter geared to one of the gear wheels 51 52. An oil dash-pot 58 is provided. It is stated that additional spring strips may be included in the linkage, and that the indicator may be operated by a rack and pinion, variable resistance, variable magnetic field with or without electronic amplifier, or unspecified hydraulic or optical arrangements.
Patent GB-1171866-A (GB)
Title: Improvements in Vacuum Degassing Steel Melts.
IPC: C21C7/10
Filed: 1968-01-19
Abstract: 1,171,866. Refining steel; degassing. EISENWERK-GESELLSCHAFT MAXIMILIANSHUTTE m.b.H. Jan. 19, 1968 [Feb. 14, 1967], No.3038/68. Heading C7D. Steel of very low carbon content is produced by vacuum degassing a melt containing substantially 0À04% of carbon and 0À06 to 0À08% of oxygen in the presence of granulated refractory of grain size 2 mm. to 1 cm., to give a final carbon content of substantially 0À005%. The preferred refractory material is lime, but limestone and clay have also been used.
Patent GB-126396-A (GB)
Title: Improvements in or relating to Pre-Heating Apparatus for Use in the Catalytic Manufacture of Sulphuric Acid.
Inventor: MELLERSH-JACKSON WILLIAM JOHN
IPC: C01B17/80
Filed: 1917-03-01
Abstract: 126,396. Jackson, W. J. Mellersh-, (Bombrini Parodi-Delfino). March 1, 1917. Straight tubes between headers or connecting-boxes. - A heat-exchange apparatus consists of a number of concentric tubes as shown, so that the gas entering at G and leaving at H may receive heat either from gas entering at I and leaving at J, or from gas entering at B and leaving at C after passing around the tubes or from both sources simultaneously.
Patent GB-573565-A (GB)
Title: Improvements in or relating to the concentration of aqueous acetic acid
IPC: C07C51/46
Filed: 1941-06-17
Abstract: The concentration of aqueous acetic acid is effected by azeotropic distillation with paraldehyde.  Any remaining paraldehyde may be depolymerized and distilled off and then absorbed in paraldehyde containing a little sulphuric acid to convert it into paraldehyde. Preferably, the azeotropic distillation is effected under reduced pressure to bring the boiling-point below 80 DEG  C. so as to avoid any depolymerization of the paraldehyde.  The initial acid may be first extracted with paraldehyde, the extract being then treated as described above.
Patent GB-431584-A (GB)
Title: Improvements in the manufacture and production of silver solders
IPC: B23K35/30
Filed: 1934-01-30
Abstract: A solder, particularly for use with rustless or stainless iron or steel alloys consists of 4-80 per cent of silver, 1-40 per cent of manganese and 10-70 per cent of copper.  Up to about 1 per cent of a deoxidizing agent such as aluminium, silicon, or phosphorus may be present; for example 0,5 per cent of phosphor copper may be added. The solder may be used with a flux of a fluoride and boric acid or a borate for example 60 per cent of powdered borax glass and 40 per cent of potassium fluoride.  Reference has been directed by the Comptroller to Specification 414,213.
Patent GB-502135-A (GB)
Title: Improvements in or relating to pressing rollers for spinning frames or the like
IPC: D01H5/74
Filed: 1938-02-01
Abstract: 502,135. Pressing-rollers for jute &c. spinuing-machines. LAIRD, T. H. Feb. 1, 1938, No. 3139. Convention date, Dec. 23, 1937. [Class 120 (ii)] [Also in Group VIII] Pressing-rollers for jute and like spinning-machines comprise disc-like members 1, 1a provided with knifeedge peripheries, one member having ledges 4, 5 whereby the other serves to clamp a ring 10 of cork, leather, rubber, or other suitable material so that it forms a wearing surface level with the edges of the members adapted to wear uniformly therewith. Curved or sloping surfaces may be provided so that the ring is forced outwardly when tightened, as described in Specification 304,457, [Class 120 (ii)].
Patent GB-882788-A (GB)
Title: Process and apparatus for manufacturing bottles and the like neck-provided articles from thermoplastic material
IPC: H01L23/467
Filed: 1959-01-29
Abstract: 882,788. Blow moulding hollow articles. HAGEN, R., [trading as KAUTEX-WERK R. HAGEN.]. Jan. 29, 1959 [July 5, 1958], No. 3236/59. Class 87(2). A process for the blow-moulding of a hollow thermoplastic article comprises extruding a tube 11 of thermoplastic material from a downwardly directed nozzle 10 intoa multi-part mould 12, 13 which closes to seal the upper end of the tube 11, inflating the tube 11 to the shape of the mould 12, 13 by admitting into the tube an under pressure through a blowing nozzle 16 projecting into the lower end of the tube and compression moulding a thickened neck on the article by moving an annular piston 20 in the axial direction of the blowing nozzle 16. The annular piston 20 may be integral with the nozzle 16 and thus both nozzle and piston move, or it may be slidable over the nozzle which remains stationary.
Patent GB-484942-A (GB)
Title: Improvements in electro-magnetic relays
IPC: H01H51/32
Filed: 1937-02-04
Abstract: 484,942. Electromagnetic relays; electric control systems. GENERAL ELECTRIC CO., Ltd., PUCKETTE, C. C., and HARRISON, W. J. D. Feb. 4, 1937, No. 3260. [Class 38 (v)] [Also in Group XXXVIII] In a relay having a reed 7 adapted to vibrate in response to current of a particular frequency in a coil 2, the reed causes the opening or closing of contact springs 16 mounted on spacers 15, the assembly being freely pivoted at 12. In the form shown the reed carries an extension 17 with a bent-over end which enters between the two contact springs 16. The relay is provided with a permanent magnet 5, an adjustable polepiece 6 and an armature 4 on the reed. The natural frequency of vibration of the contact springs 16 is slow compared with that of the reed, or may be made so by weights, Fig. 2 (not shown), so that when current of suitable frequency energizes the relay winding 2, the rapid vibration of the extension 17 forces the contact springs apart and holds them apart. The relay has a second armature, reed and spring set mounted behind the first. An application of the invention for controlling street lighting is shown in Fig. 3. The relay 1 is here operated by currents on the lines P3, N. Application of current of one frequency causes the one armature 31 to respond and contacts 33 to open and current of another frequency causes the other armature 32 to respond and contacts 34 to open. The contacts 33, 34 respectively control the two windings 35, 36 of a relay which operates to tilt a mercury switch 14 controlling the lamps 42 " on " or " off ". The relay 35, 36 is of the type shown in Specification 354,847.
Patent GB-524427-A (GB)
Title: Improvements in and relating to the coating of glass and like surfaces
IPC: C09K11/02
Filed: 1939-01-31
Abstract: 524,427. Luminiscent and fluorescent surfaces. NEONELECTRIC CO., Ltd., and SCARFF, O. P. Jan. 31, 1939, No. 3300. [Class 15 (ii)] [Also in Group XL] In coating glass or other surfaces with luminescent or fluorescent powders by means of a binder, a sulphonated fatty alcohol is added to the usual mixture which ultimately forms the binder. Borax, sodium phosphate, Water glass or potassium silicate may also be present. The process is suitable for the manufacture of electric discharge and other lamps which incorporate a luminiscent or fluorescent surface. A binder may be formed by mixing glycerine, phosphoric acid or phosphorous acid with aqueous alcohol and adding sulphonated lorol. In order to secure even distribution it is only necessary to drain off the adhesive composition, but wads of surgical wool may be passed through the glass tubes &c. by means of compressed air to remove the excess. According to the Provisional Specification the sulphonated fatty alcohol may be replaced by any substance which will reduce the surface tension.
Patent GB-917378-A (GB)
Title: Improvements in or relating to grinding machines
Inventor: SADLER JACK
IPC: B24B41/06
Filed: 1961-01-27
Abstract: 917,378. Bearings. ROLLS-ROYCE Ltd. Nov. 24, 1961 [Jan. 27, 1961], No. 3341/61. Class 12 (1). [Also in Group XXIII] The work-holder 16 of a grinding machine is supported on a cushion of compressed-air supplied to a chamber 19 in the holder, the chamber having air-escape holes 22. The air supply is cut-off by a cock 21 during removal or insertion of a workpiece 14.
Patent GB-114325-A (GB)
Title: Improvements in or relating to Electric Signalling System.
Inventor: GREEN HAROLD
IPC: B66B19/06
Filed: 1917-03-08
Abstract: 114,325. Green, H. March 8, 1917. Mine signalling systems.-In a haulage track signalling system in which the truck is divided into signalling sections, a single track conductor is provided over which current impulses are sent from the various signalling sections to operate an indicator to locate the origin of the signal. In the arrangement shown, each signalling section A, B, C is provided with a magneto 1 operated by a pull rope 3 to send signalling impulses as described in Specification 109,886. The station A is provided with a set of relays 9, 10 - - 16, 17 adapted to send impulses controlling the origin indicator, and the relay 9 is energized by the closure of the contacts 5, 6 when the magneto 1 is operated to send the signalling impulses. The operation of the relay 9 closes the circuit of the relay 10 and the contacts 19, and the succeeding relays operate in a similar manner to close the contacts 20, 21, 22, 24, 26 and to open the contacts 23, 25, and 27 in the single track conductor 18. In order that the first impulse operating the origin indicator may not be sent over the line 18 to operate a relay 28 controlling the origin indicator before all the signalling impulses have been sent, the relays 10, 11 are arranged to release their armatures slowly. When the relay 9 is finally de-energized, the relays 10, 11 - - 16, 17 are successively de-energized and upon the de-energization of the relay 12, the line circuit 18 is opened, and upon the de-energization of the relay 13, the line circuit 18 is made to send a current impulse to the relay 28. Similarly the relays 14, 15 and 16, 17 are successively de-energized to send current impulses to the relay 28. In this manner, three current impulses are sent from the section A to operate an origin-indicator-bell three times or to operate a lamp indicator of the kind described in Specification 18780/14. The relays in the section B are arranged to send four impulses to the origin indicator.
Patent GB-714920-A (GB)
Title: Improved safety guard for textile milling machines
Inventor: WEBSTER ROLAND
IPC: D06C17/00
Filed: 1951-02-13
Abstract: 714,920. Machinery guards. KILBURN & SONS, Ltd., R. Feb. 11, 1952 [Feb. 13, 1951], No. 3483/51. Class 80(4) A guard for a textile milling machine is interconnected with beltshifting or other starting mechanism so that raising of the guard stops the machine and starting the machine closes the guard. The guard comprises arcuate side frames 3 supporting horizontal rods which screen the drawing rollers and throat 18, and is pivoted on a shaft 4 and counterbalanced by a weighted arm or spring. An arm 9, on the shaft carries a spring- loaded stud which co-operates with a leaf-spring 7 and a notch 10 to retain the guard in its lower closed or upper open positions respectively. A link 11 pivoted to the arm 9 is slotted at 12 for engagement with a stud 14 on the draft board 13 of the machine, the board being pivoted at 16. The starting lever 15, raising of which stops . the machine, is also pivoted at 16 and rests on the stud 14 so that should the board be liftedby hand, by fouling material, or by raising of the guard-the machine is stopped. The slotted connection 12 allows the guard to remain closed if the board is lifted by hand or material. In a modification the guard is slidable in curved guides.
Patent GB-972809-A (GB)
Title: Testing device for visual omni-range systems
IPC: G01S1/46
Filed: 1963-01-28
Abstract: 972,809. Testing V.O.R. receivers. BENDIX CORPORATION. Jan. 28, 1963, No. 3486/63. Heading H4D. A standard V.O.R. receiver, comprising a receiver and detector 12, yielding the 9960 frequency modulated signal and the 30 c/s. variable phase signal, a reference signal channel comprising an F.M. detector 18, a variable phase signal channel comprising a filter 14 and phase shifter/resolver 22, and a phase detector 26, fed with the outputs of the two channels, is checked for random phase shifts by switching means 30, whereby the 30 c/s. variable phase signal is removed from the input to the variable phase signal channel and the 30 c/s. reference signal is substituted therefor. The same signal is now being applied to both inputs of the phase detector 26 and the phase shifter 22 is adjusted until the indicating means 28 connected to the output of phase detector 26 reads zero. Switching means 30, comprises, Fig. 2, a first amplifier stage, comprising a transistor 32 with a phase shifting input network 36/38 and a load resistor 48, which amplifies the reference signal and applies it to the base 54 of transitor 56 forming a second amplifier stage. The base 54 of transistor 56 is normally biased to earth via closed switch 62, cutting the second amplifier stage off. A very large resistance 61 is connected between the emitter 58 and collector 60 of transistor 56 and the variable phase signal is applied to the emitter 60 which is also connected to the input of the variable phase signal channel. With switch 62 closed the variable phase signal passes straight into its channel. When switch 62 is opened, however, transistor 56 becomes conducting, diverting the variable phase signal away from its channel input, and amplifying and applying the reference signal to the input of the variable phase signal channel. Alternatively, the switching means 30 may switch over the input to the reference signal channel.
Patent GB-1474485-A (GB)
Title: Clutch device for change-under-load planetary gearboxes
IPC: F16H57/08
Filed: 1975-01-27
Abstract: 1474485 Friction clutches ZAHNRADFABRIK FRIEDRICHSHAFEN AG 27 Jan 1975 [28 Jan 1974] 3490/75 Heading F2C In a combination of two input clutches K1, K2 for a motor vehicle planetary change speed gear wherein friction discs 19, 21 are splined at 18, 25 to a disc carrier 17 which is connected to an input shaft 10 via teeth 15, 16 and a servo chamber 11 of the clutch K1, the disc carrier 17 and chamber 11 are die-castings and the teeth 15, 16 and splines 18, 25 are formed during the casting process. A reaction plate 20 of the clutch K1 is formed integrally with the disc carrier 17 to simplify assembly and prevent heated oil leaving the clutch K1 from flowing towards the clutch K2. The splines 25 may be radially inwardly open and the carrier disc 17 formed with channels 24 to facilitate the flow of cooling oil through the clutch K2. The output discs of the clutches K1, K2 are splined to a hub and to a second clutch servo chamber 23 which hub and servo chamber are respectively connected to elements of the planetary gear.
Patent GB-607195-A (GB)
Title: Improvements in or relating to gyroscopic instruments
IPC: G01C19/44
Filed: 1944-02-25
Abstract: 607,195. Gyroscopic compasses. SPERRY GYROSCOPE CO., Inc. Feb. 25, 1944, No. 3573. Convention date, Feb. 26, 1943. [Class 97 (iii)] [Also in Group XXXVIII] A directional gyroscope is caused to seek the meridian by electricallyapplied torques controlled by the tilt of a gyro vertical. As shown, the rotor casing 14 of the gyro vertical is supported in the outer casing 12 by a gimbal 13. A stator 15, producing a rotating field, is carried by a pendulous bail 16 and gimbal 17 and cooperates with an inductor 21 fixed to the casing 14 to produce an erecting torque for the gyro vertical as described in Specification 492,670. The erecting torque is made small so that the gyro vertical assumes a permanent tilt in the E-W plane due to the earth's rotation. The directional gyro has a coil 30 on the outer casing 25 and magnets 31 on the rotor casing 29. The induced current in a secondary coil 35 fixed to the inductor 21 differs in phase from the three-phase current supplied to the stator 15 by an amount depending on the direction of tilt of the gyro vertical and this current after suitable amplification and rectification excites the coil 30 of the directional gyro in one or other direction according to the difference in phase, thus providing the torques which precess the gyro 11 towards the meridian. The three-phase current is supplied to the stator 15 through a three-phase transformer 41 having one set of windings fixed to the casing 25 and thus turning with the supporting craft and the other set of windings orientated by the vertical axis of the directional gyro. The phase of the current supply to the stator 15 is thus automatically altered to render the induced current in the secondary coil 35 independent of turning of the supporting craft. The gyro vertical 14 assumes a further tilt due to the speed and course of the supporting craft. This may be compensated by the manually-operated phase adjuster 47 or automatically as described in Specification 154,618, [Class 97 (iii)]. To enable the instrument to be used for determining the speed and course of the craft, the tilt of the gyro vertical may be measured by electrical means of the inductive type. The horizontal axes of the gyro vertical mounting are provided with armatures co-operating with three-legged wound magnetic core members 51 carried on pendulous bails 54. The output signal is variable in magnitude and phase with the angular displacement of the parts and may be measured by a D'Arsonval galvanometer.
Patent GB-715462-A (GB)
Title: Improvements in or relating to worm gears
IPC: B23F13/08
Filed: 1950-02-13
Abstract: 715,462. Toothed gearing. NIEMANN, G. May 15, 1951 [Feb. 13, 1950]. No. 3626/50. Class 80 (1) A worm wheel 1 is a cylindrical spur wheel having straight or helical teeth and the worm 2 is of globoidal form. The worm or its teeth flanks are of a softer material than the wheel teeth flanks, e.g. bronze and hardened steel, and the roots of the worm teeth are preferably thicker than those of the wheel teeth. The teeth of the wheel may be of involute or straightsided taper profile.
Patent GB-414700-A (GB)
Title: Improvements in or relating to machine guns
IPC: F41A3/50
Filed: 1933-02-06
Abstract: 414,700. Machine guns. VICKERS-ARMSTRONGS, Ltd., LARSSON, C. A., and HIGSON, P. R., Vickers House, Broadway, Westminster. Feb. 6, 1933, No. 3642. [Class 92 (ii).] A machine gun of the barrel-recoil type comprises in combination, (1) a lock B with a cartridge-transporter B<1> and cams B<3>, B<4>, B<5> for operating the latter as described in Specification 414,658 ; (2) a central projection D' on the crank co-operating with a fixed roller D<2> to initiate movement of the crank, and a central helical compression recoil spring E both as described in Specification 411,971 ; and (3) a removable cover F<1> for the spigot F<4> of the cartridge drum as described in Specification 414,659.
Patent GB-167509-A (GB)
Title: Improvements in or connected with winches
IPC: B66D1/16
Filed: 1920-02-06
Abstract: 167,509. Clayden, A. Feb. 6, 1920. Band.-A band brake for a winch is applied by special cam-actuated means. In the example shown in Figs. 1 and 4, a pull on the lever n<1> rotates the brake shaft e and thus rotates cams u, u<1>, Fig. 4, into a non-acting position so that a spring Z can move the member t axially on the shaft to release the brake strap p. Conversely, the reverse operation of the lever causes the cams to apply the brake against the pressure of the spring. The lever n<1> may be fitted with setting and retaining means. Fig. 11 shows a modified form in which cams on the shaft f co-operate with pins p<1> on a pair of brake shoes p pivoted on the shaft e.