baber/WOPTO huggingface dataset:
Patent GB-779463-A (GB)
Title: Improved collapsible chock for use in mines
IPC: E21D15/60
Filed: 1955-04-26
Abstract: 779,463. Chocks for mines. PROGRES CHARBONNIER PROCHAR SOC. COOPERATIVE. April 26, 1955 [April 30, 1954, Sept. 11, 1954], No. 11978/55. Class 20(2) A collapsible roof-supporting chock comprises superposed wedges provided with either friction-type or hydraulic braking means for braking their relative sliding movement under pressure of the roof. The friction-type braking means comprises a bar attached to one of the wedges and clamped in a lock coacting with the other wedge. In one form, Fig. 1, the bar 4 extends obliquely through slots in the wedges 1, 2 and is pivoted at 9 to one wedge, the lock 5 tightened by a wedge 6, bearing against the other wedge. The bar may be laminated and is either uniform or tapered. In a modification the bar is fixed at both ends to the wedge 2, parallel to the sliding surface, and passes through a lock secured to the wedge 1; the lock may be of the friction type 5, or it may be actuated by a hydraulic device, Fig. 8, comprising a cylinder 13, piston 14, and brake .shoe 15 which clamps the bar 16 against the base 18 of the cylinder. In a further modification, Fig. 10, the hydraulic device itself constitutes the braking means and comprises a cylinder 13 mounted in the wedge 1, a piston 14, and a piston rod 20 attached to the lower wedge by a pivot 17 either at the lower or upper part of the wedge. Sliding girders 23 are provided on the upper face of the wedge 1. Girders 23 are slidable in lugs On the wedge 1.
Patent GB-513862-A (GB)
Title: Manufacture of derivatives of coerulein
IPC: C09B5/18
Filed: 1938-04-21
Abstract: 513,862. Dyes ; coeruleln sulphonic acid derivatives. DURAND & HUGUENIN AKT.- GES. April 21, 1938, No. 11981. Convention date, April 21, 1937. [Class 2 (iii)] Coerulein sulphonic acids give addition products with salts of sulphurous acid which have improved tinctorial properties, e.g. when used with chromium mordants for dyeing silk or printing on cotton. The coerulein sulphonic acids may be prepared according to the processes of Specifications 251,968, [Class 2 (iii)], or 479,334. In an example, a precipitate of coerulein sulphonic acid is dissolved in an aqueous solution of sodium bisulphite and heated, when yellow-green crystals are obtained. The use of normal sodium sulphite and ammonium bisulphite is mentioned.
Patent GB-753264-A (GB)
Title: Improvements relating to ionic vacuum pumps
IPC: H01J41/16
Filed: 1954-04-26
Abstract: 753,264. Discharge apparatus. GENERAL ELECTRIC CO. April 26, 1954 [April 24, 1953], No. 12017/54. Class 39 (1). [Also in Group XXVIII] The cathode of a magnetron-type ionic vacuum pump is made of ion-absorbent material such as carbon, titanium, magnesium, aluminium or stainless steel or combinations of these materials. In one embodiment, Fig. 1, the pump comprises a cylindrical envelope 1 of non- magnetic material such as stainless steel containing a ring electrode 2 and two plate electrodes 3 and 4. Ring electrode 2 which may be made of molybdenum or tungsten is supported by a conductive rod 3<SP>1</SP> attached to a cup-shaped member 5 which is suspended from the envelope 1 by an insulating tubulation 6. Plate electrodes 3 and 4 are supported by tabs 7 spot welded to the ends of the envelope 1. A permanent magnet 8, or alternatively an electromagnet, is positioned with its pole faces 9 and 10 bearing against soft iron polepieces 11 and 12 fitting snugly in apertures in washer members 13 and 14 which are clamped against the ends of the envelope 1 by bolts 15 and nuts 16. A source 22 of alternating current is connected through an autotransformer 23, current-limiting resistor 24 and transformer 18 to a cap 19 on the member 5 and through a conductor 20 to the envelope 1. In the half-cycle when the ring electrode 2 is positive with respect to the plate electrodes 3 and 4 electrons oscillate through the ring and ionize the gas molecules before being finally collected by the positive ring. The positive gas ions are accelerated towards the negative plate electrodes 3 and 4 and are driven into them and effectively removed from the space enclosed by the envelope 1. In the halfcycle when the ring electrode 2 is negative with respect to the plate electrodes 3 and 4, no gas discharge occurs. The discharge may be made continuous by replacing the alternating current supply with a direct current supply. The preferred material for the electrodes 3 and 4 is carbon which is suitably degassed before use. In a modified construction the envelope 1 is made of a vitreous material and an additional supply of electrons is provided by a thermionic cathode supported in the space between the ring electrode 2 and the plate electrode 4, the envelope being sufficiently evacuated before energization of the thermionic cathode to prevent destruction or poisoning of the cathode by oxidation. In a further modified construction designed to form the ionizing electrons into a rotating space charge to increase the length of the paths travelled before their collection, the ring electrode 2 is extended in the form of a cylinder and an axial thermionic cathode is provided. In the construction shown in Figs. 6 and 7 which also produces a rotating space charge, the anode is a cylinder 31 and the plate electrodes are replaced by a gas-absorbent cylindrical member 37 having a longitudinal groove in which a thermionic cathode 30 is supported.
Patent GB-270733-A (GB)
Title: Improvements in and relating to methods of and apparatus for treating filaments for electric incandescent lamps or the like
IPC: H01K1/54
Filed: 1927-05-05
Abstract: 270,733. British Thomson-Houston Co., Ltd., (Assignees of Inman, G. E.). May 10, 1926, [Convention date]. Residual gases.- An apparatus for app l y i n g gettering materials to coiled filaments comprises a receptacle 10 for the filaments provided at the bottom with two tubes 12, 13, the tube 13 being tangential to the receptacle, and two nozzles 20, 21 for directing compressed air into the tubes. While the air from the nozzle 21 whirls the filaments around in the receptacle 10, the air from the nozzle 20 sprays the gettering material upon them. The gettering material streams in front of the nozzle 20 from a tube 22 provided with an adjustable needle valve, and adapted to be filled by a funnel 28. Cryolite used as a getter may be suspended in a lacquer containing amyl acetate and diluted with methyl, alcohol and ether.
Patent GB-1536852-A (GB)
Title: Manufacturing spring contacts
IPC: H01H11/04
Filed: 1976-03-23
Abstract: 1536852 Making switch contacts STANDARD TELEPHONES & CABLES Ltd 23 March 1975 [24 March 1975] 12079/75 Addition to 1383419 Heading B3A A method of forming an electrical contact on a contact spring, in which springs are supplied in a continuous strip from a rail, includes welding the end of a cable metal wire to a spring, cutting the wire to form a contact billet, coining the billet between a punch 26 and die 27 to shape the contact and simultaneously indent the spring behind the contact, and severing the spring from the strip. The contact may be gold, silver, or alloys thereof, or palladium or platinum.
Patent GB-527871-A (GB)
Title: Improvements in or relating to cathode ray tubes suitable for television reproduction
IPC: H01J29/24
Filed: 1939-04-21
Abstract: 527,871. Cathode-ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and LEVIN, N. April 21, 1939, No. 12112. [Class 39 (i)] A cathode-ray tube, adapted to be continuously exhausted, is provided with a partition 2, movable from outside the tube, 'whereby a portion 1s of the tube, containing the fluorescent screen 5, can be cut off from the remainder of the tube while the screen is changed. To permit of changing the screen is removably mounted in a frame 6 attached to the tubes and is removed through an opening normally closed by a ground plate 7, a window 4 being provided for viewing the screen. Both compartments of the tube are provided with exhaust openings 8g, 8s.
Patent GB-295305-A (GB)
Title: Improvements relating to apparatus for indicating the depth of liquids in tanks or other containers
IPC: G01F23/16
Filed: 1927-05-05
Abstract: 295,305. Murphy, L. May 5, 1927. Indicators actuated by pressure of head of liquid.-In a liquid-level indicator in which the pressure necessary to force air through an open-ended pipe dipping into the liquid is measured, the air is supplied by a mechanically driven compressor which is started and stopped automatically by the pressure conditions in the air pipe. An electric motor G operates a compressor H which forces air through a liquid seal I and pipe 2 to a tube C dipping into the liquid in the tank A. A cup B contains mercury and a conductor D terminates just above it and is connected to an electromagnetic switch F controlling the motor. If the air pressure tends to fall below that necessary to balance the pressure of the liquid in the tank, the mercury in the cup B rises and contacts with the rod D to start the motor-driven compressor. A gauge J indicates the pressure, which is proportional to the depth. A relief pipe K prevents slight oscillations in the tube C. If the tube C is not of metal, an additional conductor dipping into the mercury must be provided. In an alternative (Fig. 3, not shown) the tube C terminates in a U-tube containing mercury and connected to the tank. A rise of mercury in one limb of the U-tube connects a pair of contacts projecting into the tube. In another modification, Fig. 4, the air pipe 2 is connected by a pipe N to a vessel 0 having a flexible diaphragm P which carries a pair of contacts o<1>, o<2>. If the air pressure is insufficient, the diaphragm P is deflected downwards so that the contacts dip into the mercury B. In another alternative (Fig. 5, not shown) the air pipe terminates in a bell containing a float carrying a switch contact. In a further modification (Fig. 6, not shown) the arrangement is applied to two or more tanks supplied with air from a single compressor. In addition to the means for starting and stopping the motor, each circuit includes a solenoid which opens a valve in the supply system of the tank which requires a further supply of air.
Patent GB-957443-A (GB)
Title: Automatic character reader
Inventor: TREACY CLEMENT JOHN
IPC: G06K7/12
Filed: 1961-04-05
Abstract: 957,443. Automatic character reading. GENERAL ELECTRIC CO. April 5, 1961, No. 12169/61. Headings G4M and G4R. A record document bearing data in the form of legible characters or long and short bars 11, 12 printed in black ink is sensed by infra-red radiation passed through the recordfrom a source 14 and received by infra-red detectors 32,33. The infra-red source consists of a hot wire, a filament lamp or an arc lamp. Visible light is cut out by a filter 28. The record is fed by a band 16 having a slot 24 through which the infra-red radiation may pass to sense the data. A mask 31 above the record has a slit 30,the detectors 33, 32 being positioned over the slit so as to sense respectively all the bars and the tops only of the longer bars. Detector 33 accordingly produces timing pulses. The outputs of both detectors pass to a decoding circuit to identify the character sensed. The same principle may be used to sense the legible character, all the radiation passing through the slit 30 being detected to produce a characteristic wave form and identified, for example, as in U.S.A. Specification 2,924,812.
Patent GB-450341-A (GB)
Title: Improvements in liquid irradiating apparatus
IPC: A23C3/07
Filed: 1935-04-23
Abstract: <PICT:0450341/III/1> <PICT:0450341/III/2> In apparatus wherein a liquid is irradiated in the form of a film flowing down a smooth surface 10 the liquid is distributed from a trough 34 having perforations 35, Fig. 5, adjacent to the said surface, and a rounded protuberance 36 is provided immediately below the perforations to spread the liquid uniformly.  At the bottom of the surface 10 is an annular collecting trough protected from radiation by a shield 44.  A blower 31 draws a current of air through the apparatus via inlet screens 45 and an outlet situated in the drum 28 which houses the electrode control mechanism of the lamp 27.  The vessel 10 slides vertically on its supports 13 and may be lowered for cleaning away from its cover 23 which carries the lamp and the liquid supply pipes 38.
Patent GB-591652-A (GB)
Title: Improvements connected with swivelling electrical connectors
IPC: H01R39/64
Filed: 1945-05-16
Abstract: 591,652. Swivelling couplings. ELSTON, E. P. May 16, 1945, No. 12270. [Class 38 (i)] To prevent wire twisting, a connector comprises, on a base 1, a plug 3 which pivotally engages a socket 4 on a base 2. The base 1 has contacts 7, 8 which bear on contacts 5, 6 on the base 2. Covers 13, 14 are provided for the bases 1, 2 and have ridges 19, 20 as bearing surfaces in the casings 21, 22 which are screwed together. Cable-entries 15, 16 have set-screws 17, 18 to grip the cable. The plug 3 and the socket 4 may be used for one of the leads and in a modification one part of the connector may form part of an article.
Patent GB-1174606-A (GB)
Title: Improvements relating to Hardener Systems for Epoxy Resins
IPC: C08G59/56
Filed: 1967-03-16
Abstract: 1,174,606. Curing epoxy resins. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 16 March, 1967 [19 March, 1966], No. 12321/67. Heading C3B. [Also in Division H1] A mixture of diethylenetetramethylene tetramine (DTT) and a mono- or poly-nuclear aromatic compound containing at least one phenolic hydroxyl group, which compound has at least one ortho or para position in respect of the phenolic OH group free from substituents, is used as a hardener for epoxy resins. A suitable mixture comprises 1 equivalent of DTT, 0À5- 3 equivalent of phenolic compound and 0À5-2 equivalents of epoxy resin.
Patent GB-591658-A (GB)
Title: Improvements relating to low and medium voltage 3-phase electric motors
IPC: H02H3/353
Filed: 1945-05-16
Abstract: 591,658. Control of motors. HANNAH, S. H. May 16, 1945, No. 12326. [Class 38(iii)] Safety arrangements. -A system for preventing a three-phase low or medium voltage motor 1 from functioning under single - phase conditions comprises a star connected balanced bank of condensers 2-4 connected across either the terminals A, B, C of the motor )r the starter therefor, with the starpoint 11 of the condensers connected to a relay 12 operable through neutral under single - phase conditions of running to break the circuit of an electromagnetically operated contactor 13 which, under normal conditions of running, maintains the motor in circuit with the supply conductors 8-10 through contacts 18-20. The closure of a starting switch 14 completes an auxiliary circuit for the contactor coil 13, from the line 10, through overload relay contacts 22, over switches 21 and 14, and through coil 13 to line 8, whereupon contacts 17-20 are closed. The motor is thus connected to the threephase supply lines 8-10 and switch 14 can be opened since coil 13 is energized by a holding circuit from switch 21, over relay contacts 15 and 16 associated with the relay coil 12, and through the closed contacts 17 and coil 13 to line 8. If an interruption or disconnection occurs between one of the supply lines and the starter terminals 5-7 the magnetic flux created by the current in the two sections of the motor winding connected across the single-phase supply produces a potential difference between the terminals of those sections and the third terminal, thereby unbalancing the condenser system and energizing relay 12 to open contacts 15, 16. This de-energizes contactor coil 13 and disconnects the motor from the supply.
Patent GB-1146618-A (GB)
Title: Method for preparing photo-lithographic plates
IPC: G03F7/075
Filed: 1966-03-21
Abstract: 1,146,618. Photo-mechanical printing plates. H.F. GIPE. March 21, 1966 [Oct.11, 1965], No. 12360/ 66. Heading G2M. A lithographic plate comprises a support with ink-repellent areas of silicone rubber and inkreceptive areas thereon. Such a plate is preferably produced from a support coated with a layer of silicone rubber, a layer of metal and a lightsensitive layer and the plate is allowed to dry to cure the silicone rubber. The plate is imagewise exposed, developed and etched and the remaining light-sensitive layer removed to produce a printing plate with ink-receptive metal image areas and ink-repellent silicone rubber background areas. The light-sensitive layer may be a bichromated colloid layer. Alternatively, a conventional pre-sensitized plate is coated with a layer of silicone rubber and dried to cure the rubber. It is then imagewise exposed and developed with an organic solvent to remove the unexposed areas and the overlying silicone rubber to produce a positive lithographic plate. A negative lithographic plate is produced by imagewise-exposing and lacquering a convential pre-sensitized plate, and then coating the lacquered plate with a lightsensitive layer and a silicone rubber layer and drying. The dried plate is uniformly exposed to light and treated with the same organic solvent which penetrates the silicone rubber and the uniformly exposed layers and loosens the underlying lacquer so that the lacquer and the overlying silicone rubber and exposed layers are removed to produce the negative plate.
Patent GB-285287-A (GB)
Title: Clutch and accelerator interconnecting mechanism for motorvehicle engines
Filed: 1927-05-09
Abstract: 285,287. Gill, H. A., (Motor Safety Control, Ltd.). May 9, 1927. Controlling different functions by same handle or lever; interlocking and guarding against wrong movements; controlling-apparatus, arrangements of hand, foot, and transmission gear in conjunction with. - Comprises throttle control means wherein the carburettor throttle arm is adapted to be actuated by the clutch pedal, the accelerator pedal and a hand lever, a sliding connection being provided between the accelerator pedal and the hand lever, so that (1) when the clutch pedal is depressed the throttle is brought to the idling position and (2) when either the clutch or the accelerator pedal is released the throttle returns to the position set by the hand lever. In the construction shown in Fig. 1, the throttle arm 4 is actuated by a rod 14 controlled by a spring 15 in a casing 13 and connected by another spring 19 to a lever 20 adapted to be rocked by the clutch pedal 2. The casing 13 carries an arm 12 actuated by the accelerator pedal 3 through a rod 10 which passes through a support 9 adjusted to any desired position by linkage 6, 8, gearing 7 and a hand lever (not shown). When the pedal 3 is depressed the rod 10 acts on the casing 13, thus compressing the spring 15 and moving the rod 14 to open the throttle, the spring 19 permitting the rod to move away from the lever 20. On release of the pedal a spring 5 closes the throttle and the rods 14, 10 move back until a stop 11 on the rod 10 abuts against the support 9. When the clutch pedal 2 is depressed the rod 14 is drawn back, compressing the spring 15 in the casing, and the throttle is closed to the idling position, while, when the pedal is released the spring 15 returns the throttle to the position governed by the setting of the hand lever. In the construction shown in Fig. 12, the throttle arm 4 carries an extension 48 to which an arm 49 is pivoted, this arm being connected by a rod 38 to the hand and foot throttle-actuating levers, and by a sliding spring connection 51, 52, 53 to the clutch pedal 2. A modification is described in which the clutch pedal is connected by a cord to the throttle.
Patent GB-783331-A (GB)
Title: Improvements in or relating to pumps
Inventor: SENKOWSKI ALEXANDER
IPC: F04B1/04
Filed: 1952-05-16
Abstract: 783,331. Reciprocating pumps. MASSEYHARRIS-FERGUSON (SALES), Ltd. May 18, 1953 [May 16, 1952], No. 12398/52. Class 102(1). [Also in Group XXIX] In a reciprocating pump, the piston 18 is formed with a cross member 15 which engages a guide surface formed in the sheave 9 of an eccentric 8. The sheave 8 has bosses 14 formed with square bores to fit the member 15 and a bearing lining 16 is provided. The axis of the cylinder 3 is midway between the centre of the eccentric shaft and the centre of the eccentric when the piston 18 is at mid-stroke. The pump cylinder has inlet and outlet valves 28, 37 which are mounted in guides that are easily removable. Fig. 1 shows an arrangement in which the pump has three cylinders and the eccentric shaft 6 is driven by a pinion 7 and a lubricating pump is provided comprising a piston 59 connected to the cross member 15 of one of the pistons and delivering past a valve 67 to an annular groove 70 from which it is led to the bearings and eccentrics on the shaft ; a relief valve 72 is provided. When the pump supplies hydraulic jacks for agricultural implements, a control valve 22 is provided which is adjusted to control the supply to the pump and also release the pressure in the jack and is continuously oscillated to prevent sticking by means of a drive from the skew cam 13 on the shaft 6. Specifications 470,069 [Group XXXI], 666,878 ; 778,686, 783,333 [both in Group XXXI], and 783,336 are referred to.
Patent GB-352575-A (GB)
Title: Improvements relating to visible indexes or records
IPC: B42F17/18
Filed: 1930-04-22
Abstract: 352,575. Visible card indexes. ROSS, H. O., 309, North 10th Street, St. Louis, Missouri, U.S.A. April 22, 1930, No. 12458. [Classes 16 and 146 (i).] In a visible card index in which each card D, Fig. 9, is provided with a pair of horizontally aligned and opposed tongues a<1> and a pair of substantially triangular slots b engaged by the tongues on the adjacent card, the tongues project obliquely outward and downward relatively to the card, and are adapted for inner engagement with the triangular slots. The lower edges 5 of the slots b run obliquely downwards, the lowest points being somewhat below the upper inner ends of the tongues a<1>. When a number of cards are assembled the tongues a<1> are flexed so as to engage over the upper edges of the adjacent cards, so that all the cards of the series are interlocked. Each card has a transverse series of slots 13 to form a hinge line for exposing the rear face. Spring clips may be inserted in the slots 13 to hold additional cards. A cover or backing B<11>, Fig. 9a, may be provided for each series of cards and is scored for folding to provide superposed flaps, the under flap having tongues c<1> adapted to engage the slots b in the uppermost card D ; alternatively a folding cover may be provided to hold two series of cards in book form. Specification 277,834, [Class 146 (i), Filing paper &c. sheets], is referred to. Index tabs.-A U-shaped clip may be provided for securing one or more of the undermost cards to the cover, and may have a projecting part forming an index tab and facilitating handling of the index.
Patent GB-461476-A (GB)
Title: Electrical alarm device released by a fusible member
IPC: G08B17/06
Filed: 1936-05-01
Abstract: 461,476. Thermal switches. LORENZ AKT.-GES., C. May 1, 1936, No. 12460. Convention date, May 10, 1935. [Class 38 (v)] A thermal switch comprises a pair of contact springs d, e, held together by the engagement of their hooked ends in slots in a fusible body f, in which position the springs engage a crossbar g of a cylinder c, to hold it in the position shown. When the member f melts the springs d, e, are released to complete an alarm circuit at k, and at the same time the cross-bar g is freed. allowing the cylinder c to fall until arrested by a flange p engaging a ridge r. In this position the cylinder c indicates that the alarm has operated.