baber/WOPTO huggingface dataset:
Patent GB-1078723-A (GB)
Title: Improvements relating to grouting preparations based on epoxy resins
Inventor: CHILD WILLIAM
IPC: C04B26/14
Filed: 1964-06-25
Abstract: Wetting-agent- and water-free, water-dispersible tile grouts comprise a liquid epoxy resin based on glycerol and epichlorohydrin, a filler and a pigment.  Specified are: curing agents-polyamides and triethylenetetramine; fillers-ground malachite, sand, fused silica, glass and alumina, slate powder, talc, barytes and china clay; and as a pigment-TiO2.  In preferred embodiments the compositions are obtained by mixing (1) two components comprising (a) the pigment, the epoxy resin and some of the filler and (b) the curing agent and the remainder of the filler, or (2) three components consisting of (a) the epoxy resin and pigment, (b) the curing agent and (c) the filler.
Patent GB-318185-A (GB)
Title: Improvements relating to the flat stripping and cleaning mechanism of machines for carding cotton and other similar fibrous materials
IPC: D01G15/78
Filed: 1928-05-26
Abstract: 318,185. Whitley, A. W., Fowler, A., Sage, J., and Whitley & Co., Ltd., S. May 26, 1928. Carding - engine s.-An arrangement for stripping and cleaning the fats of cotton &c. carding- engines comprises the usual bristle &c. brush A, Fig. 1, a clearer roller G provided with card clothing, and either a receiver roller H or a hackle comb h, Fig. 3, upon which the waste accumulates. The rollers G, H are mounted in adjustable, brackets L whereby the degree of penetration of the. teeth may be. controlled. The clearer roller G is driven by the brush A, and the receiver roller H which revolves freely acts as a brake on the roller G. The receiver comb h is mounted on trunnions so that it can be turned over for the collected waste to be removed. The brush A may be provided with longitudinal rows of bristles a, Fig. 3, and the clearer roller be elliptical in shape, so arranged that the teeth at the major axis co-operate with the spaces between the rows of bristles. The roller G is mounted in freely sliding bearings J. The clearer roller and receiver roller may be positively driven.
Patent GB-1253541-A (GB)
Title: Electrical supply systems
Inventor: WILLIAMS MALCOLM
IPC: H02J7/14
Filed: 1968-04-01
Abstract: 1,253,541. Automatic voltage control. JOSEPH LUCAS (INDUSTRIES) Ltd. March 21, 1969 [April 1, 1968], No. 15508/68. Heading G3R. A supply system for a vehicle comprises a single-phase permanent magnet alternator 11 whose output is rectified by diodes 13, 14 and triacs 16, 17 to produce a charging voltage for a battery 10, which voltage is maintained at a predetermined value by a voltage regulator comprising members 31-38. When the voltage is below the predetermined value, a transistor 37 is turned on to allow the voltages developed in the alternator to turn the triacs 16, 17 on in turn so that they act as diodes and allow the alternator output to appear on the lines 12, 15. When the voltage rises above the predetermined value, transistor 37 turns off and gate current is provided for both triacs which conduct simultaneously to short circuit the alternator winding 11. Operation of the circuit for these two states and the transitional period is described. The invention may be applied to a three phase permanent magnet alternator, Fig. 2 (not shown).
Patent GB-1340463-A (GB)
Title: Process for the production of 3,4-3,4-benzophenone-tetra carboxylic dianhydride
IPC: C07C51/56
Filed: 1972-04-04
Abstract: 1340463 Preparation of 3,4-3<SP>1</SP>,4<SP>1</SP>-benzophenone-tetracarboxylic dianhydride GELSENBERG AG 4 April 1972 [27 April 1971] 15509/72 Heading C2C Substantially pure 3,4-3<SP>1</SP>,4<SP>1</SP>-benzophenonetetracarboxylic dianhydride is obtained by first converting the corresponding acid to the dianhydride by a thermal and/or chemical dehydration, and then purifying the dianhydride by vacuum distillation. The thermal dehydration may be effected by continuously introducing the tetracarboxylic acid into a melting consisting predominantly of 3,4-3<SP>1</SP>,4<SP>1</SP>-benzophenone-tetracarboxylic acid dianhydride and simultaneously removing the water of reaction. The dehydration may be performed or completed under reduced pressure and/or with the aid of a waterentraining or azeotroping agent, and the subsequent vacuum distillation may be effected as a single or multistage operation, suitably under a pressure of 0À1 to 40 torr, and optionally in the presence of fuller's earth, borax or boric acid.
Patent GB-688447-A (GB)
Title: Improvements in or relating to foot-operated electric switch-actuating means
IPC: H01H21/24
Filed: 1951-07-02
Abstract: 688,447. Snap-action switches. VAN DER HEEM N. V. July 2, 1951 [June 30, 1950], No. 15590/51. Class 38 (v) A foot-operated switch of the "successive actuation" type comprises a foot operated member 1 pivoted on a shaft 7 and having a slot 4 containing a resilient member 6 engaging in a groove in a reciprocable part 9, the latter engaging the lever 13 of a tumbler switch 2. The groove has an arcuate portion 10, a portion 12 having a U-shaped part and a portion 11, the bottom of which is inclined so as to provide a shoulder at the side of the portion 10. When the member 1 is depressed against the action of a spring 8, the end of the resilient member 6 is constrained to move in the groove portion 10 until it enters the groove portion 12, the bias of the member 6 causing its end to move into the centre of the U-shaped part. On the release of the member 1, the member 6 moves the part 9 to the right to actuate the switch. On the subsequent depression of the member 1 the part 9 is moved back to the left by the member 6 to restore the switch to its initial position, and at the same time the end of the member 6 moves along the groove portion 12 to the end of the groove portion 11, so that when the member 1 is released, the end of the member 6 is moved along the groove portion 11 into the groove portion 10 without moving the part 9. An indicator plate 14, visible through a window in the apparatus in which the switch is fixed, may be fixed to the part 9.
Patent GB-731941-A (GB)
Title: Improvements in or relating to guided load hoisting or lowering skips of the load-discharging bottom door type
IPC: B66B17/08
Filed: 1952-06-20
Abstract: 731,941. Operating doors of skips in shafts. RHYMNEY ENGINEERING CO., Ltd., and DAVIDSON, G. W. Sept. 3, 1953 ;[June 20, 1952], No. 15664/52. Class 78 (4). A mechanism for opening and closing the door of a skip in a guided skip hoist may be retracted from its operating position. In the construction of Fig. 1 the mechanism is mounted on a frame 9 which may be turned about an axis 10 by a double-acting pneumatic ram 21. The mechanism comprises a carriage 13 running on rollers 14 within the guides 9 and formed with a projection 16 adapted to take between brackets 17, 18 on the door 5 of the skip 1. The carriage 13 is raised and lowered to open and close the door by a double-acting, pneumatic ram 11. A shoot 19 for bridging the gap between the skip I and a receiving hopper 2 is carried by the guides 9. The single projection 16 of Fig. 1 may be replaced by a number of dogs 28, Fig. 4, mounted on the carriage for pivotal movement limited by stops 29 ,and adapted for engagement with a single bracket 27 on the door 5 of the skip. In an alternative construction, Fig. 3 (not shown), the door of the skip is opened and closed by an electromagnet carried by the carriage 13. The controls for the rams 11 and 21 and for the electromagnet may be interlocked with each other; with the winding gear, and with the controls for a ram 25 by which the receiving hopper 2 is opened. The pneumatic rams may be operated by compressed air or suction or may be replaced by hydraulic rams or by electricallypowered mechanism. Means may be provided for automatically withdrawing the guides 9 to provide a free passage for the skip should the power for energizing the door operating mechanism fail. The guides for the door of the skip may be disposed to press the door, when closed, against its seating.
Patent GB-114584-A (GB)
Title: Improvements in Rotary Pressure Blowers, Exhausters, Pumps and the like.
Inventor: LYON FRANK
IPC: F04C18/344
Filed: 1917-10-29
Abstract: 114,584. Lyon, F. Oct. 29, 1917. Fixed-abutment type; balancing moving parts; packing vanes.-In a rotary pump or engine of the kind having outwardly-sliding vanes m carried by a drum b which is eccentrically mounted in a casing a, friction due to the centrifugal thrust of the vanes on the casing is reduced by mounting rotary end disks d concentrically in the casing and providing them at their outer ends with flanges k engaging the corners of the vanes m. The disks d may be kept up against the drum b by balls o or a thrust collar p, or by fluid-pressure, or by tongues on the vanes engaging grooves in the flanges k. The tips of the vanes m may carry rollers r or grooved flanges m<3>.
Patent GB-114277-A (GB)
Title: Improvements in the Production of Fertilisers.
Inventor: BECQUEVORT PAUL
IPC: C05B13/02
Filed: 1917-10-30
Abstract: 114,277. Becquevort, P. Oct. 30, 1917. Calcium phosphate containing calcium carbonate is rendered assimilable by mixing with calcium chloride and ferric oxide and calcining at about 1000‹ C. so as to convert the calcium carbonate into an insoluble chloro-ferrite CaCl2,CaO,Fe2O3,
Patent GB-968289-A (GB)
Title: Overdrive device
Inventor: ATKINSON ROY
IPC: B62M25/00
Filed: 1962-04-26
Abstract: 968,289. Change speed gear; clutches; securing relatively rotatable parts. SHARP'S COMMERCIALS Ltd. March 8, 1963 [April 26, 1962], No. 15868/62. Headings F2C, F2D and F2U. A change speed gear comprises a driving member 12 and a driven member 39 coupled by a pair of different ratio trains having constant rotation with one member and selectively coupled with the other member. The trains are preferably two chains 42, 43 driven from a double dog clutch member 30, splined to an engine shaft 12, engageable with either of two different diameter sprockets 26, 27 ; the chains driving a double sprocket 40, 41 on the body of a conventional clutch 39 on the input shaft of a change speed gear 38. In the de-clutched condition, the sprockets are free to run on bushes 19, 20 splined to a sleeve 17 keyed to the engine shaft.
Patent GB-496961-A (GB)
Title: Improvements in or relating to mercury switches
IPC: H01R43/00
Filed: 1937-06-08
Abstract: 496,961. Mercury switches. LINDSTROM, A. C. June 8, 1937, No. 15908. [A Specification was laid open to inspection under Sect. 91 of the Acts, Dec. 14, 1937.] [Class 38 (v)] In a mercury switch in which rotation of a receptacle about its axis 6, 7 as by a handle 8, causes mercury to connect the end caps 12, 13, e.g. by flowing through a hole 22 in a partition 21 insulating walls 23, 24 are provided to separate the surfaces of the mercury where the " make " and " break " takes place from the mercury surfaces in the neighbourhood of the caps 12, 13. By this means any particles and impurities from the caps 12, 13, which might assemble on the surface of the mercury are prevented from reaching the central portions of the surface. Apertures 25, 26 in the walls 23, 24 establish connection between the outer and inner portions of mercury and are arranged so as to be submerged beneath the surface in all positions of the switch. The space above the mercury may be hydrogen or mercury vapour. The caps 12, 13 are formed with sleeves 17, 18 which are soldered to hollow pivots 6, 7 which are of brass and conduct the current through the supporting arms 2, 3.
Patent GB-904083-A (GB)
Title: Improved catalyst compositions
IPC: C08F4/64
Filed: 1961-05-03
Abstract: Olefins are polymerized in the presence of a catalyst comprising the complex formed by reacting an aluminium monoalkyl dihalide, violet crystalline titanium trichloride and an organic electron-donor compound containing nitrogen, the molar ratio between the electron-donor compound and the aluminium monoalkyl dihalide being 0,5\sB0,1.  Olefins such as propylene, butene and 4-methyl-pentene-1 may be polymerized to polymers of high isotactic content.  The aluminium compound may be ethyl aluminium dichloride or ethyl aluminium dibromide.  The electron-donor compound may be pyridine, dimethylamine, diethylamine, dipropylamine, dibutylamine, monomethylamine, monoethylamine, monopropylamine, monobutylamine, diphenylamine, methylaniline, ethylaniline, propylaniline, butylaniline, aniline or dimethylformamide.  Polymerization may be effected in the presence of a solvent, e.g. n-heptane or toluene. The titanium trichloride may contain aluminium trichloride in solid solution.
Patent GB-1424695-A (GB)
Title: Surgical clasp
IPC: A61B17/30
Filed: 1973-04-04
Abstract: 1424695 Clamps A WANNAG 4 April 1973 [5 April 1972] 16039/73 Heading E2B A clamp comprises a web portion 6, a central tongue 11 and flexible side tongues 7a, 7b extending from the web portion, the side tongue 7a having a recessed portion 8 extending towards the side tongue 7b whereby a fabric passed over the tongue 11 and under the side tongues 7a, 7b is clamped by pivoting the side tongue 7b so that its end portion lies in the recess of the portion 8 and is retained by an edge portion 10 of the recessed portion. The edge portion 10 has an upstanding hook shaped portion or an undercut surface which engages with a complementarily shaped end portion 15 of the side tongue 7b. The tongue 11 may be offset from the side tongues and may be narrower or wider than the space between the side tongues. The side tongues have recesses 13 to render the side tongues flexible. The clamp is made of resilient material which may be plastics. The tongue 7a has a recess 16 for holding flexible tubes or the like, the recess may have a rivet impenetrable to X rays.
Patent GB-595712-A (GB)
Title: Multi-channel telephone systems
IPC: H04J1/04
Filed: 1944-08-23
Abstract: 595,712. Multiplex systems. COMMUNICATION ENGINEERING PTY., Ltd. Aug. 23, 1944, No. 16070. Convention date, Aug. 2, 1943. [Class 40 (iv)] In a multiplex carrier system of the single side-band suppressed carrier type, the basic frequencies of broad-band channels (i.e. channels transmitting frequencies lower than the normal limit for commercial telephony) are raised by modulation before modulating the carrier so as to increase the separation between the lowest frequencies of the channel in the multiplex line and the highest frequencies of the next lower channel. As shown, a 0-10 kc. channel is shifted to the range 1-11 kc. prior to modulating the lowest of the carriers of three normal telephone channels which the present channel replaces. The receiving arrangements are the converse of those at the sending end, so that the channel is returned to its original frequency range. The Specification as open to inspection under Sect. 91 comprises also the subject-matter of Specification 596,495.
Patent GB-1379993-A (GB)
Title: Method of applying an electric terminal to a cable
IPC: H01R43/048
Filed: 1972-04-07
Abstract: 1379993 Applying electric terminals PRESSAC Ltd 28 March 1973 [7 April 1972] 16071/72 Heading B3A Method of applying an electric terminal 1 having a pair of ears 5, 8, Fig. 1, to be crimped about a conductor 6 and covering 7 of a cable comprises producing a strip of flat semi-formed blanks which are coiled into a reel 3, withdrawing the strip and deforming the blanked ears to extend at an angle to one side of each blank, engaging the conductor and covering with the blank, crimping the ears about the cable, and severing the crimped connections from the strip at a postion 9, Fig. 2. Terminals having connectors of various shapes may be blanked from  the strip, Figs. 3-7 (not shown).
Patent GB-741893-A (GB)
Title: Electroplating apparatus
Inventor: POPE GEORGE ARTHUR
IPC: C25D17/24
Filed: 1953-06-11
Abstract: 741,893. Electroplating-barrels. CANNING & CO., Ltd., W. Nov. 11, 1953 [June 11, 1953], No. 16098/53. Class 41. An electroplating apparatus comprises a tank a, a rotary perforated metal barrel k of truncated conical form having its axis so inclined that the lower side of the barrel is always horizontal and having a narrow longitudinal aperture q serving as both entrance and exit, and a vertically movable slide b mounted on one side of the tank a for carrying the barrel k. The barrel k is detachably mounted by arms p to a spindle j which is rotated through gears o, o<SP>1</SP> driven by an electric motor n. An anode t is arranged in the barrel k which may be raised or lowered hydraulically, or manually by a handle g and gearing h on a spindle f carrying pinions e engaging toothed racks c. The aperture q has a part r overlapping the opposite edge s whereby rotation one way allows articles in the barrel to jump the aperture q, but rotation in the opposite direction causes them to fall out of the barrel when the aperture q is lowermost. A fan x draws off noxious vapours through a duct w.
Patent GB-149119-A (GB)
Title: Improvements in and connected with the steering wheels of self propelled vehicles
IPC: B60R25/022
Filed: 1919-06-26
Abstract: 149,119. Stoddart, J. June 26, 1919. Unshipping steering hand wheels.-A tiltable steering-wheel is adapted to be locked in its tilted position to prevent theft. The rim a is pivoted on two spokes, the remaining spoke b, Fig. 5, being fitted with a spring catch f to permit tilting. The wheel is locked in its tilted position by a fitting j, Fig. 7, on the steering-column g embracing the rim and locked by a padlock h.
Patent GB-650036-A (GB)
Title: Improvements in and relating to the manufacture of thermoplastic and thermosetting compositions from zein
Inventor: PINNER SOLOMON HARRIS
IPC: C08H1/00
Filed: 1947-06-18
Abstract: Films and sheets may be prepared from zein modified by heating with benzoic anhydride (see Group IV (b).  The addition of paraformaldehyde to the modified zein yields thermosetting compositions.  In examples sheets of various physical properties are obtained on pressing the mixtures or products from the following reactions: (1) zein and benzoic anhydride dissolved in toluene are heated together and the product is air dried; (2) a product is obtained as in (1) and plasticized with dimethyl phthalate; (3) a product obtained as in (1) is mixed with paraformaldehyde; (4) a product obtained as in (3) is mixed with ditolyl glyceryl ether; (5) a zein-benzoic anhydride mixture; (6) a mixture of zein, benzoic anhydride, paraformaldehyde and toluene; (7) zein, benzoic anhydride, toluene and paraformaldehyde are heated in a flask and the product is washed with cold toluene; (8) a mixture of zein, benzoic anhydride and paratertiary amyl phenol and paraformaldehyde.  In examples (3), (4) and (6) the sheets are conditioned after pressing by heating in an oven.ALSO:Zein is modified by heating with benzoic anhydride.  A water-resistant thermoplastic product is obtained whilst the addition of paraformaldehyde yields a thermosetting composition. In a preferred process the zein and benzoic anhydride are reacted in the presence of a diluent, which is a good solvent for benzoic anhydride and a non-solvent for zein and the resulting product, in quantity depending on the moisture content of the zein.  Suitable diluents are toluene, benzene, xylene and trichloroethylene.  In examples water-resistant sheets of various physical properties are obtained on pressing the following mixtures or the products of the following reactions: (1) zein and benzoic anhydride dissolved in toluene are heated together and the product air-dried; (2) a product obtained as in (1) is plasticized with dimethyl phthalate; (3) a product prepared as in (1) is mixed with paraformaldehyde; (4) a product prepared as in (3) is mixed with paraformaldehyde and ditolyl glyceryl ether; (5) a zein-benzoic anhydride mixture; (6) a mixture of zein, benzoic anhydride, paraformaldehyde and toluene; (7) zein, benzoic anhydride, toluene and paraformaldehyde are heated in a flask and the product washed with cold toluene; (8) a mixture of zein, benzoic anhydride and paratertiary amyl phenol and paraformaldehyde.  In examples (3), (4) and (6) the sheets are conditioned after pressing by heating in an oven.
Patent GB-324605-A (GB)
Title: A new or improved lifting jack
IPC: B66F3/16
Filed: 1929-05-28
Abstract: 324,605. Shelley, Ltd., R. T., and Lawrence, E. G. May 26, 1929. Jacks.-A multiple-lift screw-jack has means for holding the central crutch stem against rotation comprising telescopic key members non- rotatably secured to the crutch stem and jack casing respectively, The crutch stem k has a downwardly extending tube n of angular crosssection engaging the upper end of an angular rod p carrying at its lower end a plate s the ends of which engage grooves t in the casing a. Lugs q at the top of the rod engage stops r at the lower end of the tube as the jack is extended. Two or more screwed sleeves f are arranged between the casing and crutch stem.
Patent GB-902424-A (GB)
Title: Improvements in asymmetrically conductive device
IPC: H01L29/00
Filed: 1959-05-13
Abstract: 902,424. Semi-conductor devices. GENERAL ELECTRIC CO. May 13, 1959 [May 15, 1958], No. 16425/59. Class 37. An asymmetrically conducting device, with thyratron characteristics comprises an intrinsic semi - conductor body with extrinsic end regions, and a P-type and N-type region, each projecting inwardly into the intrinsic region to constrict this region in the vicinity of each of the extrinsic end regions. The Figure shows a cylindrical body 1 in which N-type zone 5 and P-type zone 8 constrict the current path in intrinsic region 2 between P-type zone 3 and N-type zone 4. In operation, N-type zone 5 is normally biased positive relative to P-type zone 3, thus preventing any injection of holes from zone 3; similarly, zone 8 is biased negatively relative to zone 4 to prevent injection of electrons from zone 4. Thus, although zone 3 is biased positively relative to zone 4, no current flows between these electrodes. If a negative pulse is applied to zone 5 sufficient to overcome the bias, holes flow from zone 3 to P-type zone 8 and thence through resistor 15, thereby tending to reduce the negative bias on zone 8 and thus allow the passage of electrons from zone 4. The effect is cumulative and a large current flows between electrodes 3 and 4 which once started, is substantially independant of the potential of either of zones 5 and 8. The effect can also be initiated by applying a positive pulse to P-type zone 8. The semi-conductor material may consist of germanium, silicon, silicon carbide, boron, AIII BV compounds such as aluminium phosphide, gallium arsenide and indium antimonide, or AII BVI compounds such as cadmium telluride and zinc telluride. Donors may consist of lithium, phosphorus, antimony and bismuth, and, for AIII BV compounds, Group VI elements such as sulphur selenium and tellurium, and for the AII BVI compounds, Groups III and VII elements such as aluminium, gallium, indium, chlorine, bromine and iodine. Acceptors may consist of boron, aluminium, gallium and indium, and for the AIII BV compounds, of Group II elements such as magnesium, zinc and cadmium, and for the AII BVI compounds of Groups I and V elements such as copper, antimony, arsenic and phosphorus. Reference is made to Specification 902,423 regarding the production of a PIN device by applying an electric field across a PN junction while heated, so that an impurity such as lithium migrates away from the central region.
Patent GB-476592-A (GB)
Title: Stencilling apparatus
IPC: B41F15/08
Filed: 1936-06-12
Abstract: 476,592. Endless - chain conveyers. HOMMEL CO., O. June 12, 1936, No. 16437. Convention date, Sept. 24, 1935. [Class 78 (i)] [Also in Group XVI] In stencil-printing apparatus, bottles or other round articles B are rotatably mounted in brackets 86 carried by a continuously or intermittently moving conveyer comprising a pair of endless chains 80, whereby the articles are rolled over a stencil 7. The brackets are guided by rails 92, 93. The conveyer may be vertical to co-operate with a vertical stencil, and the articles may be positively rotated and may be fed automatically into the holders.