baber/WOPTO huggingface dataset:
Patent GB-1482137-A (GB)
Title: Test leads for use with multimeters in testing the current amplification factor of transistors
IPC: G01R1/06
Filed: 1974-08-14
Abstract: 1482137 Testing transistors SANWA INSTRUMENT WORKS Ltd 14 Aug 1974 [21 April 1974] 35818/74 Heading G1U [Also in Division H2] A test lead comprises a housing 1 with a contact pin 2 connected to two lead wires 5, 6, one wire 5 being in series with a resistor 7. In use, the pin 2 is connected to a multimeter 15, Figs. 5-8 (not shown) and the wires 5, 6 which carry crocodile clips 3, 4 at their free ends to the base and collector of a transistor whose current amplification factor is to be determined. An equation is developed giving the current amplification factor in terms of the meter-battery voltage EB Fig. 8 (not shown), the internal resistance RM of the meter, the base-emitter voltage drop V BE  of the transistor and the impedance RX as measured by the meter.
Patent GB-430576-A (GB)
Title: Improvements in or relating to the manufacture of glycerol and glycols
IPC: C07C29/00
Filed: 1933-12-21
Abstract: Glycerol-glycols are obtained from polyhydric alcohols having a greater number of carbon atoms, e.g. the sugar alcohols by treatment with hydrogen at a temperature of 200--300 DEG  C. and a pressure of at least 70 atmospheres, preferably 200--270 atmospheres in the presence of a hydrogenating catalyst and of a weakly basic buffer compound.  The sugar alcohol may be produced in situ by using a monosaccharide as the initial material and initially reducing this to the corresponding hexitol at a lower temperature and pressure.  The catalyst may be separated after the first stage reduction to a hexitol, the second stage reduction being carried out with fresh catalyst and a weakly basic buffer compound.  The monosaccharide may be produced by the hydrolysis of a polysaccharide.  The initial materials referred to include alcohols such as sorbitol, dulcitol, mannitol, xylitol, monosaccharides such as glucose, fructose, xylose, mannose, arabinose, rhamnose, and polysaccharides such as cane sugar, maltose, lactose, starch, and cellulose.  The weakly basic buffer compounds referred to are calcium or other alkaline earth metal carbonates, borax, aluminium hydroxide, and sodium carbonate. Suitable catalysts include reduced nickel or cobalt, particularly highly reduced nickel, which may be supported on an inert carrier, nickel chromite, alumina containing metallic nickel, and copper-zinc compositions such as prepared by heating mixtures of compounds containing zinc, copper and hexavalent chromium.  The reaction is preferably conducted in aqueous solution, but solutions or suspensions in alcohol, propylene glycol, &c., may be used.  The process may also be conducted in the absence of solvent or dispersing agent.  When reducing the sugar alcohols in aqueous solution a glycerine of higher purity is obtained by using relatively dilute solutions.  After the reaction water can be removed from the product by distillation and glycerol can be separated from the mixture of ethylene and propylene glycols also obtained by fractional distillation.  The glycol fraction may be separated by further distillation.  The glycerol obtained is preferably purified by extraction with a solvent such as chloroform, ether or carbon tetrachloride.  The extracted impurities may be utilized for out-freeze mixtures.  The Specification as open to inspection under Sect. 91 comprises also the general application of the above process for the manufacture of lower polyhydric alcohols from polyhydric alcohols having a greater number of hydroxyl groups and refers to "decalin" as a suitable solvent in which to conduct the reaction. This subject-matter does not appear in the Specification as accepted.
Patent GB-301841-A (GB)
IPC: H01J9/20
Filed: 1928-12-06
Abstract: 301,841. British Thomson-Houston Co., Ltd., (Assignees of Fagan, J. T., and Phelps, R. G.). Dec. 6, 1927, [Convention date]. Bulbs.-An apparatus for colouring electric-lamp bulbs &c. by applying a powdered pigment to the etched inner surface, as described in Specification 300,179, comprises a holder provided with one or more sockets 14 to receive 'the necks of the bulbs 19 and communicating with cups 17 which receive the pigment 18 when the holder is inverted as shown in Fig. 4. When the holder is inverted from the position shown in Fig. 4, and placed in the machine as shown in Fig. 1, the pigment drops into the bulbs and is distributed over their surfaces by vibrating the holder vertically. In the modincation shown in Fig. 2, the holder is mounted in an inclined position on the vertically reciprocated slide 47 and is slowly rotated by a belt 49 work. ing over a pulley 48.
Patent GB-1525972-A (GB)
Title: Commutators
IPC: H01R43/08
Filed: 1976-12-02
Abstract: 1525972 Commutators WATLIFF CO Ltd 2 Dec 1976 [2 Sept 1975] 36090/75 Heading H2A [Also in Division B3] A commutator has wire-receiving slots 16 at one end of its segments 12, and the segments 12 are separated (a) by insulating strips 21 extending axially over the length of the slots 16, and (b) by air gaps 14 extending axially over the remainder of the assembly.
Patent GB-1544869-A (GB)
Title: Device for preventing rotation of a shaft
IPC: F02B39/16
Filed: 1976-09-01
Abstract: By means of the locking device the shaft (2) of a turbocharger, for example, can be locked in the event of its being damaged so that the diesel engine can be run without increasing the damage to the turbocharger. For locking purposes an outer bush (4) is fixed on the machine housing (1) by means of a retaining ring (5). An inner bush (7) is rotationally fixed to the outer bush (4) by means of spring pins (13) and is axially displaceable in the outer bush. An outer ring (9) with a tapered face (12) is clamped by means of bolts (10) against a slotted inner ring (8) having a tapered counterface and fitted onto a collar (3) of the shaft (2). The shaft is thereby non-positively connected to the machine housing. Since the inner ring (8) can be arranged close to the bearing of the turbine wheel, the shaft is locked in a simple manner by means of a single device and any overstressing of the shaft end as could occur in the case of the bilateral locking hitherto usual is avoided. <IMAGE>
Patent GB-416913-A (GB)
Title: Grid-controlling device for electric valves
IPC: H01J17/04
Filed: 1932-12-20
Abstract: 416,913. Converting. SIEMENSSCHUCKERTWERKE AKT.-GES., Siemensstadt, Berlin. Dec. 20, 1932, No. 36138. Void [Abridged as open to inspection under Sect. 91 of the Acts, Nov. 13, 1933]. [Class 38 (ii).] Relates to the grid control of discharge devices and consists in supplying to the grids a control potential having a rectangular wave form from a " relaxation oscillation " circuit. The particular circuit used is a modification of the Hull Dynatron circuit. The Specification contains references to publications which describe this circuit. The phase of the grid potential can be varied by means of a phase shifting transformer.
Patent GB-1313385-A (GB)
Title: Apparatus for positioning a rotatable member
IPC: F16K31/60
Filed: 1970-07-27
Abstract: 1313385 Positive detents; lubricating brakes; twist handles; valves JAMESBURY CORP 27 July 1970 [30 Sept 1969] 36244/70 Headings F2E and F2V An apparatus for positioning a rotatable member such as a valve stem 88, 64, Fig. 4, comprises a support member 12, 14, adapted at 16, 18 to grasp stem 64, a handle 36, 38, including a channel 52, a bushing 56 slidable in the hollow part 38 of the handle, a pawl 44 and a pin 50 extending into channel 52 and connecting bushing 56 with pawl 44, so that rotation of handle 36, 38 about its longitudinal axis moves pawl 44 in a direction away from a ratchet 62 (secured to the valve housing) (the channel 52 being V-shaped as shown). With the pawl held released the apparatus may be moved arc-wise (arrow, Fig. 3) to a new position at which the handle may be rotated to permit the pawl to re-engage the ratchet. As shown, the pawl is biased to engaged position by a spring 54. Preferably the bushing 56 is of nylon or PTFE. The support member may have an extension 66 with a hole 68 so that it may be secured to ratchet 60, e.g. by a padlock passed through hole 68 and a corresponding hole in the ratchet. The pawl tooth need not occupy a ratchet space when the apparatus is thus secured. The handle is retained against the pull of spring 54 by a ring 42 around it engaging the hollow part of the support member, so if necessary the pawl may be freed from the ratchet merely by pulling the handle radially outwards instead of twisting it. The cavity in the support member 12 may be packed with grease retained by a plug 34.
Patent GB-1511283-A (GB)
Title: Production of foamed gypsum mouldings
IPC: C04B28/14
Filed: 1975-09-03
Abstract: 1511283 Porous bodies BAYER AG 3 Sept 1975 [3 Sept 1974] 36247/75 Heading C1A Porous bodies are produced by suspending a completely or partly dehydrated calcium sulphate hydrate (e.g. synthetic or natural anhydrite or CaSO 4 À¢H 2 O) containing at least one alkaline constituent (e.g. CaO, Ca(OH) 2 , MgO or Mg(OH) 2 ) in an aqueous solution in the presence of hydrogen peroxide or a derivative thereof, a decomposition catalyst for the peroxide and at least one acidreacting compound having at least one active hydrogen atom in a quantity which is not sufficient for complete neutralization of the alkaline constituent; and allowing the resulting suspension to foam to form the porous body. The acid reacting compound may be a monohydrogen or dihydrogen phosphate of the metals of the first, second or third main Group of the periodic table (e.g. KH 2 PO 4 , K 2 HPO 4 , NaK 2 PO 4 , Na 2 HPO 4 , Ca(H 2 PO 4 ) 2 , Al[H 2 (PO 4 )] 3 ) or an ammonium phosphate optionally together with an acid sulphate (e.g. NaHSO 4  or KHSO 4 ). Alternatively the acid reacting compound may be oxalic acid, amino trimethylene phosphonic acid or mixtures thereof. The peroxide decomposition catalyst may be MnSO 4 , MnCl 2  or a manganate or permanganate.
Patent GB-182146-A (GB)
Title: Improvements in fastenings for the doors of rotary washing machines
IPC: D06F37/10
Filed: 1921-10-31
Abstract: 182,146. Baker, W. E. Oct. 31, 1921. Turn-bolt door fastenings; latches, swinging.- In a rotary latch fastening for doors, particularly those of rotary washing machines, the part 4 of the latch 1 is adapted to coact with the inclined part 5 of the staple 6 to rotate the latch into its mid-position, Fig. 3, in which no part of the latch extends beyond the door edge and a spring, preferably in the form of a spring-controlled arm 10, can coact with a cam 9 on the latch to continue the motion of the latter so as to cause the part 8 to engage in the staple 6, and then return it therein. To draw the door up against its frame, the part 8, or the interior of the staple with which it engages, or both, may be inclined, or the latch may be mounted on a screw-threaded pin 2. A handle 13 is provided for withdrawing the latch.
Patent GB-863917-A (GB)
Title: Improvements in or relating to variable value indicator systems
Inventor: WHY JOHN FREDERICK
IPC: H01H61/02
Filed: 1958-11-15
Abstract: 863,917. Thermal switches. GENERAL MOTORS Ltd. Nov. 2, 1959 [Nov. 15, 1958], No. 36816/58. Class 38 (5). [Also in Groups XXXVI and XXXVIII] A thermo-responsive switch comprises two bimetallic strips 23 and 24 mounted in an insulating block 25 which is clamped in a metal frame 26. The whole is mounted in an insulating tube 30 fitted with metal caps 31, 32 so that the strip 23 is electrically connected to the cap 31. A heater coil 29 is connected at one end to the cap 32 and at the other to the strip 24 so that when the contacts 27 are closed current flows through the coil. As the strip 23 warms up, the contacts will open and cyclic interruption of the current thus occurs. The value of the current at which interruption occurs can be set by a screw 35. The strip 24 compensates for changes in ambient temperature, and preferably has a smaller deflection for a given temperature change than the strip 23.
Patent GB-1359517-A (GB)
Title: Ball-and-socket joint as a bearing for a shock absorbing strut
IPC: B60G7/00
Filed: 1971-08-05
Abstract: 1359517 Ball joint A EHRENREICH & CIE 5 Aug 1971 [5 Aug 1970] 36862/71 Heading E2F A ball and socket joint comprises a single part acetal resin socket 3 which embraces the ball head 4 on both sides of an equator thereof so as to prevent withdrawal of the ball head from the socket, a metal casing 1 and an intermediate rubber ring 2 disposed between and vulcanised to the socket and the casing. The joint is preferably to be used as a bearing for shock-absorbing struts as used in motor vehicles fitted with McPherson strut suspension. In an alternative embodiment (Fig. 1, not shown) a hollow ball head is used.
Patent GB-1368840-A (GB)
Title: Knitting pins
IPC: D04B3/02
Filed: 1973-08-08
Abstract: 1368840 Knitting pins NEEDLE INDUSTRIES Ltd 8 Aug 1973 [8 Aug 1972] 36876/72 Heading D1C A knitting pin has a flattened head formed with a slot like cavity to receive a plate 16 visible through openings in the sides of the head. The head of a pin 10 along with a core plate 23 is moulded into the plastics head, the plate is removed and a plate 16 inserted which is marked with the size and/or a Trade Mark and the end closed. The pin may be aluminium rod and the head may be polypropylene, cellulose acetate butyrate or nylon. The plate may be a laminate made of layers of different colours so that the outer layers may be cut away to show markings.
Patent GB-322901-A (GB)
Title: Improvements in or relating to dough and like mixing machines
IPC: A21C1/14
Filed: 1928-12-15
Abstract: 322,901. Russell, R. Dec. 15, 1928. Racks. - A rack or support for spare beaters of mixing- machines comprises a shelf or table adapted to fit around the standard or column of the machine and having in its periphery a number of slots for the beaters. The rack a is gapped at one side for fitting on to the column e, being supported thereon by clamping bolts h, and the slots c have retaining lips d.
Patent GB-367489-A (GB)
Title: Improvements in valves, taps and the like
IPC: F16K27/02
Filed: 1930-12-09
Abstract: 367,489. Lift valves. MASON, H. L., 103, King Henry's Road, Hampstead, London. Dec. 9, 1930, No. 37158. [Class 135.] The upper part a of the body screws into the lower part m at p and compresses packing h between the valve seat k and an upstanding flange q on the part m. The valve member f screws reversely on the lower end of the spindle so that speed of opening and closing is increased if the friction of the packing is sufficient to prevent rotation of the member f. Specification 280,864, [Class 135, Valves &c.], is referred to.
Patent GB-986360-A (GB)
Title: Process for the fabrication of high definition apertured masks
IPC: G03F1/20
Filed: 1963-09-23
Abstract: 986,360. Etching. NATIONAL CASH REGISTER CO. Sept. 23, 1963 [Nov. 2, 1962], No. 37260/63. Heading B6J. High definition apertured masks are fabricated by providing a laminated plate, comprising a first laminate soluble in a first etchant and insoluble in a second etchant and a second laminate soluble in the second etchant and insoluble in the first etchant, applying an etching resist to the exposed faces of the lamin� in a design which on one surface is a minor image of that on the other, etching the first lamina in the first etchant to remove the unprotected areas of the lamina down to the second lamina, and thereafter similarly etching the second lamina with the second lamina with the second etchant. The first lamina may be 0�0001-0�001 inch thick, forming the mask proper, the second lamina being 0�002-0�01 inch thick and forming a ribbed support; undercutting by the etchant in the case of the latter being desirable. The first lamina may be copper, copper alloy, or nickel, and the second lamina aluminium, chromium, lead, or iron alloy such as steel or stainless steel. The etching liquid may be chromic acid, nitric acid, sodium sulphide solution, sodium hydroxide, potassium hydroxide, hydrochloric acid or a mixture of chromic acid and sulphuric acid.
Patent GB-436488-A (GB)
Title: Improved game apparatus
IPC: A63F7/00
Filed: 1934-12-31
Abstract: 436,488. Table games. BEAMISH, J. H., 4, Frimley Road, South Park, Seven Kings, Essex. Dec. 31, 1934, No. 37304. [Class 132 (ii)] In a game wherein balls or discs are propelled along a board having an undulating surface arranged longitudinally, the board comprises two troughs a, a<1> and a crest b provided with a plurality of cups or orifices c for reception of the balls. When not in use, the balls are retained by a pin f in a storage compartment e at each end of the board.
Patent GB-1111255-A (GB)
Title: Heater for a chick-brooding cage
Inventor: POTTER RONALD WILLIAM
IPC: A01K31/20
Filed: 1966-08-19
Abstract: 1,111,255. Chick brooders. W. POTTER & SONS (POULTRY) Ltd. 19 Aug., 1966, No. 37379/66. Heading A1M. [Also in Division F4] A chick-brooding cage provided with a gas-fired heater (see Division F4) comprises a wooden framework supporting a wire mesh floor 16 and an asbestos sheet roof 18, the front and rear walls each comprising a lower sheet metal portion 22, 22a formed with holes 23, 23a for access to fed troughs 24, 24a, and an upper portion formed by vertical bars 27, 27a. The cages may be superposed, the asbestos sheet of one forming a droppings tray or a support therefor, for the superjacent cage.
Patent GB-373811-A (GB)
Abstract: 373,811. Ignition systems. EWEST, H., 31, Schlesische Strasse, Berlin..June 24, 1931, No. 18274. Convention date, June 28, 1930. [Class 7 (iv).] Current is supplied from a generator 1 to a gas-discharge tube 2, the voltage-drop which occurs on discharge being used to induce hightension current in a transformer 4.
Patent GB-836939-A (GB)
Title: Washing agents
IPC: A61Q19/10
Filed: 1957-12-02
Abstract: Detergent compositions comprise (a) a surface-active substance and (b) an ester of a boric acid with a fatty acid alkanolamide or with a mixture of a fatty acid alkanol-amide and an alcohol, the boric acid being completely esterified and containing at least one alkanolamide residue per boron atom; the fatty acid alkanolamide is preferably one containing 10-20 carbon atoms in the fatty acid chain and up to 5 carbon atoms in the alkanol residue.  Component (a) may be a soap derived from natural or synthetic fatty acids, an ethercarboxylate, the condensate of a fatty acid with an amino acid or with a protein hydrolysis product, an alkyl- or cycloalkyl-sulphonate, an alkyl- or cycloalkyl-aryl sulphonate, a fatty acid ester of a hydroxyalkyl sulphonate, a condensate of a fatty acid with an aminoalkyl sulphonate, an alkyl sulphate, a sulphated partial ester of a fatty acid with a polyhydric alcohol, a sulphated partial ether of a fatty alcohol with a polyhydric alcohol, a sulphated fatty alcohol polyglycol or polyglycerol ether, a sulphated fatty acid alkanolamide, a polyethylene glycol, or a mixed polyether.  The amount of (b) present should not be more than that of (a) and is generally less.  The compositions may also include alkali metal phosphate, polyphosphate, sulphate, silicate, perborate, carbonate and bicarbonate, magnesium sulphate and silicate, carboxymethyl cellulose paraffins, fatty acids, alcohols, esters, especially glycerides, lanolin, lecithin, titanium dioxide, kaolin, bentonite, colloidal silica, boric acid, urea, 3 : 5 : 6 : 31 : 51 : 61 - hexachloro - 2 : 21 - dihydroxydiphenylmethane, perfume, optical brightners, deodorants, dyestuffs and disinfectants.  The compositions may be produced in bar, powder, chip, noodle or flake form by conventional methods, the boric acid ester, which preferably has a melting point of 65-110 DEG  C., being suitably added in a molten state to a paste of the surface-active substance.  In one embodiment, an ethylene oxide reaction product with a fatty alcohol, a fatty acid or an alkylphenol is melted together with the ester (b), and the melt is allowed to harden in moulds to form sticks which are suitable for use in removing fat stains from textiles of polyamide fibres.ALSO:Borate esters of fatty acid alkanolamides are obtained by heating boric acid (H3BO3) or an anhydride thereof, e.g. HBO2, H2B4O7 or B2O3, with the fatty acid alkanolamide or with a mixture of a fatty acid alkanolamide and an alcohol, so that the boric acid is completely esterified and contains at least one alkanolamide residue per boron atom; the fatty acid alkanolamide is preferably one containing 10-20 carbon atoms in the fatty acid chain and up to 5 carbon atoms in the alkanol residue, and the reaction is carried out preferably at 80-160 DEG  C.  The water formed may be removed by the passage of inert gas, by boiling inert solvents, or directly at the upper range of reaction temperature.  The esters may also be obtained by inter-esterifying boric acid esters with fatty acid alkanolamides.
Patent GB-374680-A (GB)
Abstract: 374,680. Trailers for cycles, cars, &c. THOMAS, J. L. H., 5, High Street, Barnet, Hertfordshire. July 30, 1931, No. 21784. [Class 108 (i).] A trailer framework for cycles, motor cycles, motor cars and lorries comprises a rectangular base of metal banding F<1>, F<2>, four angle-iron corner uprights D<1>.. D<4>, coupling and strengthening members C<1>, C<2> arranged as shown and side extensions B provided with upwardly extending brackets E<1> .. E4 for the independent axles of the wheels so that the framework is underslung. The framework may be the frame of the body of the trailer. All the members are bolted together and detachable. Specification 338,750, [Class 108 (i), Road vehicles, Body details &c. of], is referred to.
Patent GB-1502138-A (GB)
Title: Equestrian harness or saddlery equipment
IPC: B68C1/14
Filed: 1975-09-12
Abstract: 1502138 Harness and saddlery E A BIRD 8 Sept 1976 [12 Sept 1975] 37531/75 Heading AIM A body strap component of equestrian harness or saddlery equipment, such as a girth, sircingle or roller, comprises a tubular sheath 11 woven from yarn of staple polyester fibre enclosing a strip of foamed polyethylene, the ends of the sheath being heat sealed and provided with end straps 16 and reinforcing bands 15 of nylon braid or webbing. The nylon bands have an elasticity less than that of the sheath 11, and additional nylon bands 21 may be stitched to the sheath to control the elasticity of the strap.