baber/WOPTO huggingface dataset:
Patent GB-912143-A (GB)
Title: Improvements in or relating to transistor oscillator circuits
IPC: H03B5/24
Filed: 1960-01-28
Abstract: 912,143. Transistor pulse generating circuits. DIETZ CO., R. E. Jan. 28, 1960 [July 15, 1959], No. 3133/60. Class 40 (6). A circuit for energizing a flashing lamp 26 comprises a free-running pulse generator constituted by two reciprocally-coupled transistors 14, 16 of opposite conductivity types and a further power transistor 10 controlled by the pulses from the generator 14, 16 to supply pulses of current to the lamp 26. The pulse generator constituted by transistors 14, 16 is substantially the same as that described in Specification 884,301. Considering a cycle of operation starting from the condition in which the transistors are cut off and capacitor 56 is substantially discharged, the capacitor charges negatively until transistor 16 conducts, the current flowing through the transistor causing transistor 14 to conduct also, thereby sending the base of transistor 16 further positive and increasing conduction in the transistors due to the voltage drop produced across load resistor 42. The capacitor 56 discharges until its potential falls so low that conduction in one or other of transistors 14, 16 cannot be maintained and the transistors then switch off by regenerative action. The load resistor 42 may be constituted by a small lamp if desired. A parallel combination of inductor 22 and resistor 24 is arranged in series with the lamp 26; this ensures a large effective load before the lamp 26 warms up so that transistor 10 is driven into saturation immediately on being switched on. The capacitor 12, which does not appear in the circuit shown in Specification 884,301, maintains the potential of the base of transistor 16 steadier than would otherwise be the case and so slows the discharge of capacitor 56 and increases the duration of the " on " period of the circuit. Reference has been directed by the Comptroller to Specification 801,453.
Patent GB-1255914-A (GB)
Title: Improvements in or relating to drive shafts
Inventor: RASCH WLADIMIR
IPC: B63H23/34
Filed: 1970-01-22
Abstract: 1,255,914. Shafts. BATTELLE DEVELOPMENT CORP. 22 Jan., 1970, No. 3140/70. Heading F2U. Torsional vibrations in a drive shaft are reduced by damping material, such as swelled mica mixed with epoxide resin, inserted in gaps in the shaft located at the regions of the nodes or of reduced shaft diameter. As shown in Figs. 1 and 2 the damping material 11 is inserted in longitudinal grooves 21 in the surface of the shaft, while in Fig. 7 cylindrical shell plates 35 of irregular shape are secured to the shaft and the damping material 14 inserted in the gaps between the plates. In other arrangements (not shown) the damping material is inserted between pins, discs or other projections on the shaft surface (Figs. 5 and 9), or a layer of the damping material on sheet metal is wound spirally around the shaft (Figs. 11 and 12).
Patent GB-174952-A (GB)
Title: Improvements in integrating mechanism for steam-flow meters
IPC: G01F1/26
Filed: 1922-02-04
Abstract: 174,952. Claassen, E. Feb. 7, 1921, [Convention date]. Drawings to Specification. Integrating.-Relates to steam flow meters of the kind in which a baffle arranged in the steam passage is moved according to the flow thus causing a counter to move radially over a driving disc driven by clockwork; and consists in the combination with the baffle of a horizontal rod carrying the counter, the rod being moved axially from the baffle by a bell-crank lever, across a horizontal clockwork-driven disc, the driving- wheel of the counter resting on the disc by gravity only. Reference has been directed by the Comptroller to Specification 14897/05.
Patent GB-519554-A (GB)
Title: Improvements in or relating to centrifugal electric furnace plant
IPC: B22D13/06
Filed: 1939-02-01
Abstract: 519,554. Rotary furnaces. SPLADIS SOC. POUR L'APPLICATION D'INVENTIONS SCIENTIFIQUES. Feb. 1, 1939, No. 3423. Convention date, Feb. 15, 1938. Addition to 514,474. [Class 51 (ii)] [Also in Groups XXII and XI] A centrifugal machine as described in parent Specification has the electrically-heated furnace pivoted to horizontal rods 87, 88 attached to the hollow driving shaft 1 and a single reflector 117, at the junction of the hollow shaft 1 and a sighting tube 93, slightly inclined to correspond to the average inclination of the sighting tube 98 of the furnace in working position. The counterbalance for the furnace may be a second furnace similarly mounted &c, the reflector 117 being adjusted so as to serve for either furnace by a pin 122, Fig. 5, link 121 and feathered slide 120 moved vertically by a rod 125 screwed into a fixed nut 127 and rotated by gearing 128, 129 and handle 132. Highfrequency current is fed to the windings c by brushes 109, 110, engaging fixed stainless steel rings 106, 107, leads 111, 112, the rods 87, 88 which are mounted in insulating sleeves, insulated rods 99, 100, Fig. 3, and leads 113, 114. The centre of the winding c is earthed by a lead 115 rod 103, sighting tubes and lead 116, Fig. 1. The sighting tube 98 has a diaphragm 118 to limit the view of the pyrometer to the bottom of the sighting chamber in all working positions of the furnace, i.e., 0 to 6 degrees from the horizontal.
Patent GB-451037-A (GB)
Title: A method of and apparatus for producing multiple electric spot welds simultaneously or in sequence
IPC: B23K11/00
Filed: 1935-02-02
Abstract: 451,037. Welding. MEACHER, W., c/o Westminster Engineering Co., Ltd., Victoria Road, Willesden Junction, London. Feb. 2, 1935, No. 3429. [Class 83 (iv)] A multiple spot-welding machine particularly suitable for wire mesh has a member A which constantly reciprocates towards and away from welding heads H carried on conducting bars B, D. A third bar C is also provided to equalize the impedance. Pivoted members P are interposed selectively in the path of the reciprocating member A through the actions of cams or preferably by means of magnet .coils M. The coils are connected at one end to a series of studs S energized by a brush R geared to the mechanism producing the reciprocation of the member A. A main interrupter switch is provided with contacts M and M<1>. One contact M is reciprocated from the shaft Z and engages the second contact M<1> which is carried by a spring loaded member engaging a cam V. This cam is so shaped as to increase the " on tune " of the switch as welds are produced further away from the transformer. A second interrupter switch O preferably moving with the member A can be connected in the circuit of the magnet coils and correctly tuned to make and break same.
Patent GB-1066281-A (GB)
Title: Shackles or clevises
IPC: F16G15/02
Filed: 1964-01-28
Abstract: 1,066,281. Shackles. FORDHAM PRESSINGS Ltd., and J. F. PARKER. Oct. 30, 1964 [Jan. 28, 1964], No. 3526/64. Heading F2Q. A shackle is formed from a plastics strip 10 with an integral pin 11 at one end and a hole 13 at the other end, and a central hole 15 bounded on one or both sides of the strip by grooves 16, the outer ends 18 being bent up about the grooves 16 and the enlarged head 19 of the pin 11 being forced through the end hole 13. The central hole 15 is attached to a chain, cord or rod and the pin 11 to a siphon lever of a flushing cistern.
Patent GB-591116-A (GB)
Title: Improvements in or relating to electric fires
IPC: F24C7/06
Filed: 1945-02-13
Abstract: 591,116. Electric heating. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., ROSEBY, P. N., and GELLATLEY, C. W. J. Feb. 13, 1945, No. 3531. [Class 39 (iii)] [Also in Group XXXVI] In an electric fire &c. employing a detachable wire - wound heating element 11 having end caps 19, and supported between spring clips 12, the end caps and spring clips are sand or shotblasted d and then sprayed with aluminium or aluminium alloy to improve the contact conditions between them. The end of the resistance wire 22 is gripped by means of a washer 21 and screw 20, and is brazed or welded to the brass &c. end cap 19, using silver solder &c. The clip is of mild steel &c. and has a slot or hole which allows the screw 20 to project. It is secured to a ceramic block 13 having a protective collar 18 which prevents contact between the clip and a reflector 10 to which the blockis secured.
Patent GB-594941-A (GB)
Title: Improvements in or relating to closures for receptacles
IPC: B65D45/32
Filed: 1944-02-25
Abstract: 594,941. Stoppers for bottles &c. MAGNESEN, C. D. Feb. 25, 1944, No. 3539. [Class 125 (iii)] A stopper which may be applied and removed by hand as desired comprises a pair of telescopically slidable members 12, 14. The inner member 12 has a raised portion 36 upon which the member 14 slides and a number of fingers 28 adapted to engage under a shoulder on the bottle or other receptacle 44. The member 14 in its lower position engages protruding portions 30 of the fingers 28 and forces the fingers into engagement with the bottle. The raised, portion 36 is bulged near its top to prevent complete removal of the member 14 therefrom. A metal or other sealing member 10 may be placed upon the raised portion 36.
Patent GB-179264-A (GB)
Title: Improvements in the manufacture of pan and pot handles
IPC: B21D53/38
Filed: 1921-01-29
Abstract: 179,264. Bates, A. Jan. 29, 1921. Handles.-A handle for an aluminium cooking-vessel comprises a grip portion A formed of steel vitreous enamelled so as to be a poor conductor of heat, and an aluminium boss B headed over the grip portion and adapted to be riveted to the vessel. The handle is made of short length to render the vessel more convenient for use on a gas-stove.
Patent GB-847514-A (GB)
Title: Improvements in or relating to fluid-control valves
IPC: F16F9/34
Filed: 1957-02-01
Abstract: 847,514. Valves. REGIE NATIONALE DES USINES RENAULT. Feb. 1, 1957 [Feb. 1, 1956; June 7, 1956; Oct. 4, 1956], No. 3614/57. Class 135. [Also in Group XXXII] A non-return valve comprises a rubber or similar resilient sleeve-like closure member 1, Fig. 3, having a tapered lip portion 4, a cylindrical portion formed with beads 2, 3 and an external annular groove 6 between the portions. Normally the lip 4 with its own resilience engages the cylindrical core 13 of a valve seat element formed with radially extending webs 16 profiled to conform to the internal surface of the lip portion and a flange 12 between which and a shoulder 11 in the valve body 7 the cylindrical portion is clamped by means of a screw-threaded connector 8. On the pressure of the fluid flowing in the direction of the arrow 19 exceeding a predetermined value the lip hinges about the groove 6 to move away from the core 13, fluid passing through flow passages between the webs and the space between lip and the core. In a modification, the closure member includes a second lip 4a, Fig. 10, which is pressed into sealing engagement with the inner periphery of the valve body 7. An annular internal bead on the valve body engages between the beads 2, 3 to locate the closure member. The core 181 is formed with an axial passage terminating in an orifice 23 to allow limited flow in either direction and instead of profiled webs, on the valve seat element the internal surface of the closure member is fluted.
Patent GB-162807-A (GB)
Title: A poppet exhaust valve two-stroke petrol engine
IPC: F02B25/00
Filed: 1920-02-06
Abstract: 162,807. Grand, G. C. Feb. 6, 1920. Two-stroke-cycle engines.-Relates to twostroke engines in which gases are drawn into the crank case direct from the carburettor, through an inlet I, are compressed in the crank case by the piston, and then pass through four transfers T into the combustion chamber and up to the domed head of the cylinder. According to the invention, a mechanically operated poppet exhaust valve E of the kind having the stem extending downwards is provided.
Patent GB-998602-A (GB)
Title: Improved crispy, expanded foodstuffs, and processes for the production thereof
Inventor: GERKENS DIRK RENEE D ARNOUD
IPC: A23L19/18
Filed: 1962-01-31
Abstract: The production of crispy, expanded food from starchy flour, e.g. potato, tapioca, rice or wheat flour, with 3.5-6% of salt and 28-35% of moisture involves extruding the mixture under pressure to produce strands containing starch not enclosed in cell walls, drying the strands until they possess a horn-like outer layer and are of mean water content 6-10%, and cooking and expanding the so-dried strands in hot fat.  The fat content may be less than 25%, the salt content may be 2.6-5.5% and the weight to volume ratio may be 0.18-0.20.  On drying before the frying the water content near the surface may be 7% and in the interior 17%, salt beginning to crystallize out at the surface; on frying salt crystals form in layers progressively from the outside to the centre.  Cheese, or cheese, tomato or curry powder may be incorporated in the mixture extruded.  Specification 822,018 is referred to.
Patent GB-1302931-A (GB)
IPC: B01J2/00
Filed: 1970-01-26
Abstract: 1302931 Urea ESSO RESEARCH & ENG CO 26 Jan 1970 [3 Feb 1969 30 Dec 1969] 3677/70 Heading C2C [Also in Divisions B2 and C1]  Particles comprising urea or substituted ureas (i.e. agglomerative units of actual particles) are encapsulated by substantially water insoluble metal carbonates, e.g. of Ca or Mg by coating the particles with an oxide or hydroxide and carbonating the hydroxide or oxide in a CO 2 - containing atmosphere to produce sufficient carbonate in situ to prevent caking of the coated particles (see Divisions B2, C1). In the examples, the degree of carbonation of Ca(OH) 2 -coated urea ranges from 29-98% after 4 mins.
Patent GB-1057263-A (GB)
Title: Process of alkylating lactams
IPC: C08F2/38
Filed: 1965-01-27
Abstract: Mineral and lube oils may contain homopolymers resulting from the polymerization by conventional solution polymerization of alkylated N-vinyl-2-pyrrolidone, alkylated N-vinyl-2-piperidone, or alkylated N-vinyl-e -carprolactam.ALSO:Alkylated lactams are prepared by heating from 0.01 to 10 mols inclusive of an a -olefine or halo-a -olefine of from 2 to 100 carbon atoms inclusive with 1 mol. of a lactam of the general formula <FORM:1057263/C2/1> wherein R represents an alkylene group selected from ethylene, trimethylene and tetramethylene and R1 represents a hydrogen atom or a C1 to C4 alkyl radical, at 120 DEG  to 160 DEG  C. for 6 to 48 hours in the presence of 0.001 mol. to 1 mol. of organic peroxide.  The products of the alkylation are usually mixtures of alkylated lactams which may be separated into their various component compounds if desired. Mixtures of olefines, for example those obtained by cracking petroleum wax, may be employed as the olefine reactant.  Any unreacted lactam may be removed from the reaction product by distillation under reduced pressure.ALSO:Alkylated lactams are prepared by heating 0.01 to 10 mols. of an a -olefine or halo-a -olefine of from 2 to 100 carbon atoms inclusive with 1 mol. of a lactam of the general formula <FORM:1057263/C3/1> wherein R represents an alkylene group selected from ethylene, trimethylene and tetramethylene and R1 represents a hydrogen atom or a C1 to C4 alkyl radical, at 120 DEG  to 160 DEG  C. for 6 to 48 hours in the presence of 0.001 to 1 mol. of organic peroxide.  The products of the alkylation are usually mixtures of alkylated lactams which may be separated into their various components if desired.  Specified olefine reactants include the polybutenes of M.W. 300 to 1500.ALSO:Homoploymers resulting from the polymerization by conventional solution polymerization of alkylated N-vinyl-2-pyrrolidone, alkylated N-vinyl-2-piperidone, or alkylated-N-vinyl-e -caprolactam are formulated with "Freon" (Trade Mark) propellants to yield hair sprays.
Patent GB-556013-A (GB)
Title: Improvements in collapsible wooden packing cases
IPC: B65D6/16
Filed: 1942-03-21
Abstract: 556,013. Collapsable packing-cases. BIRCH, H. W., and CROOK, F. S. March 21, 1942, No. 3762. [Class 18] A collapsable wooden packing-case has sides 2 with inward projections 3 at the ends rebated at 4 to engage similar rebates on battens 8 of the ends 7, the bottom 11 resting on bottom projections 5 of the sides, the ends resting on the bottom and end battens 8 projecting between the edges of the bottom and the side battens 3. The top rests on the upper edges of the ends and by abutting against the battens 8 prevents the ends from moving inwards. The rebates 4 may be dovetailed or square. The dimensions are preferably such that when the sides are placed one over the other the remaining members are capable of being contained between them, the construction permits the omission of all metal fittings, but wire binding may be used.
Patent GB-726906-A (GB)
Title: Improvements in or relating to tone generators for telecommunication systems
Inventor: BRAY FREDERICK HARRY
IPC: H04M19/02
Filed: 1952-02-13
Abstract: 726,906. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd. Feb. 6, 1953 [Feb. 13, 1952], No. 3776/52. Class 40 (4). [Also in Group XL (c)] A tone generator in an exchange system comprises a crystal triode oscillator. As shown, a dial tone generator comprises a transistor with emitter and collector transformer coupled to give positive feedback. A similar circuit for producing busy tone incorporates an interruptor contact or electronic device such as a flip-flop to introduce the usual interruptions by grounding the collector or negatively biasing the emitter. Values of circuit components are given for producing dial, ringing and busy tones.
Patent GB-345751-A (GB)
Title: Improvements in and relating to electric regulators
IPC: H02P9/24
Filed: 1930-02-05
Abstract: 345,751. Automatic electromagnetic regulators. INTERNATIONAL GENERAL ELECTRIC CO., Inc., 120, Broadway, New York, U.S.A.-(Assignees of Allgemeine Elektricitats-Ges. ; 2, Friedrich Karl-Ufer, Berlin.) Feb. 5, 1930, No. 3900. Convention date, Feb. 5, 1929. [Class 38 (iv).] An automatic regulator 5, as shown in Fig. 1, is provided with an additional device to obtain rapid variation of the excitation of the generator 3 in the event of line surges. A solenoid 7 energized by current transformers 6 actuates a core 11 which is fixed to a spring 13 attached to a dashpot plunger 12. The lower contact 15 has a member which engages with a pin 16 when the spring 13 is extended. The contact 15 is mounted on an arm pivoted at 22 or on a resilient tongue, a spring pressing the two contacts 14, 15 together. A slow variation in the line current allows the dashpot plunger 12 to follow the movement of the core 11 and contacts 14, 15 remain closed allowing regulation in the normal way through the contacts 9 and shunt regulator 10. On a surge the core 11 moves rapidly upwards, the spring 13 is extended and contacts 14, 15 open, breaking the field circuit of the exciter 4 to cause a rapid drop in the line curcurrent. Fig. 2 shows a demagnetizing winding 18, normally short-circuited, which is energized when the exciter field is broken as above.
Patent GB-1179461-A (GB)
Title: Benzimidazoles and Herbicidal Compositions Comprising the same
IPC: C07D235/10
Filed: 1967-01-26
Abstract: 1,179,461. Herbicides containing benzimidazoles. ELI LILLY & CO. 26 Jan., 1967 [26 Jan., 1966], No. 4030/67. Heading A5E. [Also in Division C2] A herbicidal composition in the form of a wettable powder, a liquid emulsion or a solid dispersion or a carrier, contains as active ingredient a 2-trifluoromethyl benzimidazole of the formula I: wherein X is a hydrogen atom and R is a CH 3 SO 2 - group at the 5-position, or X is a nitro group and R is a CF 3 - or CH 3 SO 2 - group at the 6-position.
Patent GB-641628-A (GB)
Title: Improved manufacture of stoppers for containers
IPC: B65D39/16
Filed: 1948-02-11
Abstract: 641,628. Moulding bottle &c. stoppers. RAU, E. Feb. 11, 1948, No. 4055. Convention date, Feb. 11, 1947. [Class 87 (ii)] [Also in Group XVII] A stopper with a cap is formed by filling a mould 1 with a composition comprising a synthetic resin, e.g. phenol-formaldehyde, a solvent, a diluting agent, a hardening means, red oil, and colouring matter, inserting a cork stopper 2 into the composition, heating the composition and then removing the stopper with the moulded cap. The side wall of the mould may have grooves to give the cap a serrated edge. Several moulds may be contained in one plate.
Patent GB-737563-A (GB)
Title: Production of hexachlorobenzene
Inventor: FOSTER REGINALD THOMAS
IPC: C07C17/00
Filed: 1952-02-15
Abstract: Hexachlorobenzene is prepared by treating benzene hexachloride with an excess of oxygen at an elevated temperature in the presence of a catalyst capable of promoting the oxidation of hydrogen chloride to chlorine, and condensing the chlorinated benzene formed.  Preferably the vapour of benzene hexachloride consisting predominantly of the alpha isomer is introduced into a gas stream comprising between 110 per cent and 200 per cent of the stoichometric quantity of air or oxygen at 450 DEG  C. to 550 DEG  C.; and the gaseous mixture is passed through a bed of finely divided supported copper chloride catalyst at a rate sufficient to maintain the catalyst in a state of continuous suspension, using a space velocity of 20-300 and more suitably 50-200, volumes of gaseous feed per volume of catalyst per hour; the gaseous product is passed through a tower down which water is sprayed and the hexachlorobenzene is collected from the base of the tower.  In examples (1) benzene hexachloride vapour entrained with air at 470 DEG  C. is passed over a fluidized catalyst comprising cupric chloride and potassium chloride supported on alumina and the gaseous product is condensed to give polychlorobenzenes containing a major amount of hexachlorobenzene; and (2) the process of (1) is repeated using a greater excess of oxygen to give a product containing 95 per cent of hexachlorobenzene, the remainder being pentachlorobenzene.
Patent GB-161771-A (GB)
Title: Improvements connected with motor-driven road vehicles such as wagons
IPC: B60K3/00
Filed: 1920-02-11
Abstract: 161,771. Blake, A. V. Feb. 11, 1920. Vehicle fittings and attachments. - A scoop, pivoted to a pair of arms c<4>, which are pivoted in turn to the body of a motor vehicle, is connected by a cord to a winch g on the vehicle, so that it can be raised from a loading position near the ground, as shown in Fig. 1, to a dumping position in which it is inverted over the body of the vehicle. The cord is connected to the bottom of the scoop and passes round guide-pulleys f<3> on the arms and pulleys on the vehicle body respectively. The initial pull on the cord rotates the scoop until stop plates e contact with the underside of the arms and thus maintain the scoop rigid with the arms. The rigidly-held scoop may be loaded automatically during the first part cf the upward movement by cutting through a heap of material; while during the latter part of the movement the arms contact with and raise counterweighted levers i<5> which serve to return the scoop from the dumping position to a point where its weight will be effective in completing its downward movement.
Patent GB-912388-A (GB)
Title: Caster with special supporting surface
Inventor: JACKSON LESLIE K
IPC: B60B33/00
Filed: 1960-02-05
Abstract: 912,388. Castors; furniture combinations. HARVARD MANUFACTURING CO. Feb. 5, 1960, No. 4149/60. Classes 52 (1), 52 (2) and 52 (3). A castor 1 has a king pin 2 with spaced flanges 3, 4, a horn 5 rotatably secured to pin 2 by bearings 6 and races 7, 8 and a wheel 9 of greater width than height and having a frustoconical surface making an angle of 1 to 2 degrees with a line parallel to the wheel axis, the mounting of the pin 2 in its socket 31, Fig. 7, being such as to allow positioning of the pin at 1 to 2 degrees to the vertical when the castor is loaded. In a modification. Fig. 9, having a plate-type fixing means clearance is provided between king pin 38 and plates 36, 39 and horn 5b. Bed frames 12 having such castors are pivoted at 14 to a common headboard 13 or to a corner table.