baber/WOPTO huggingface dataset:
Patent GB-1020375-A (GB)
Title: Improvements in synchronous detection circuits
IPC: B23B51/02
Filed: 1964-04-13
Abstract: 1,020,375. Phase detectors. COMPAGNIE D'APPLICATIONS MECANIQUES A. L'ELECTRONIQUE, AU CINEMA ET A L'ATOMISTIQUE (CAMECA). April 13, 1964 [April 17, 1963], No. 15277/64. Heading H3A. A synchronous detection circuit comprises two double triode circuits associated to provide an output signal practically independent of the local signal amplitude. In Fig. 4 a signal S is applied to grids g 1  and g 1 <SP>1</SP> of the two doubletriodes and its inverse - S is applied to grids g 2  and g 2 <SP>1</SP>. A square wave M of the same frequency as S is applied to grids g 1  and g 2 <SP>1</SP> and its inverse - M is applied to grids g 2  and g 1 <SP>1</SP>. The output across R 4 , after smoothing in a filter (not shown), is shown to be proportional to #M+ÁS cos #, where # is the phase of S and # and Á are circuit constants. Similarly the output across R<SP>1</SP> 4  is #<SP>1</SP>M - Á<SP>1</SP>S cos #, and the difference equals   (Á + Á<SP>1</SP>)S cos #+(#-#<SP>1</SP>)M. Since # is nearly equal to #<SP>1</SP> this difference output Vd is much less sensitive to variation of M than the output across R 4 .
Patent GB-504679-A (GB)
Title: Improvements in or relating to safety razors
IPC: B26B21/18
Filed: 1938-05-26
Abstract: 504,679. Safety razors. MACDONALD, A. ,May 26, 1938, No. 15673. [Class 30] The end cap D is pivoted by means of arms D<1> on the ends of a cross-rod C<1> secured to a rod C sliding and adjustably locked in .the handle B. The rod C' passes through slots B<1> in the walls of the handle, and through slots A<3> in plates A<2> integral with the guard plate A. .The blade is clamped in position for shaving by pressing down the cap D and then turning a screw knob E until it bears on the end C' of the rod C. The blade is positioned by elongated transverse ribs A<4> formed on the plate A.
Patent GB-1487869-A (GB)
Title: Cooling bed assembly for elongate metallic products
IPC: B21B43/00
Filed: 1975-04-16
Abstract: 1487869 Walking beam conveyers for steel sections BIRDSBORO CORP 16 April 1975 [9 May 1974] 15690/75 Heading B8A [Also in Division B3] Steel sections 86 (Fig. 2) proceeding from a rolling mill (12) (Fig. 1, not shown) and shears (17), (18), on either of two rollerways 35, 36 are transferred, either in single succession, or (as shown) after being formed into stacked groups, on to fixed transfer bars 41 on which cooling is designed to take place. The sections are conveyed over the bars 41 by cyclically moving bars 42. Eventually the sections are removed from the bars 41 by being picked up by notched portions 267 (Fig. 7) of rotating pick-up arms 265. When a stack is to be removed from the bars 41, a cylinder 282 is energized, and thereby lifts arms 273 to the position of Fig. 8 (not shown). The arms 273 carry notched pockets 272, and also curved guide bars 274. Each section 86 of a stack is successively picked up by the rotating notched portions 267 of the arms 265. The sections are formed into stacks on a pocket-shaped first notch 71 of the bars 41 by being engaged, when lying flat, by a reciprocating member 85 (Fig. 2). A mechanism is described (Fig. 4, not shown) for altering the line of action of the member 85 as each successive section is turned over. Each series of rollers of the rollerways 35, 36, have respective associated series of lifting members 38 and 39. These act first as stops (in the position shown in dot-dash lines in Fig. 2) to retain a section on the rollerway until the time is right for it to slide down into the first notch 71 (or in the case of the rollerway 36, an upper notch 73). A mechanism is described (Fig. 5, not shown) for providing the cyclic movement (dot-dash line A) to the bars 42. Part of this mechanism includes an arrangement which enables the horizontal component of this movement to be increased (dot-dash line B). The approach of sections on the rollerways 35, 36 is sensed by heat detectors. Information produced thereby is fed to logic circuitry (Fig. 9h, not shown) which controls the time of operation of the lifting members 38 and 39, and the time of commencement of the bars 42. If the time interval between successive bars is less than a predetermined amount, the commencement of operation of the bars 42 is delayed so that both bars can be picked up simultaneously. If time interval is greater than the predetermined amount, the bars are conveyed successively.
Patent GB-995466-A (GB)
Title: Asbestos-cement products
IPC: C04B28/04
Filed: 1963-04-22
Abstract: A method of manufacturing asbestos cement sheets of improved appearance from admixtures of calcareous cementitious material, water and fibre, comprises shaping and consolidating the admixtures into sheet form, and is characterized by the fibres being a blend of predominately amosite and chrysotile asbestos fibres in a ratio of 5 to 50 parts by weight of amosite and 95 to 50 parts by weight of chrysotile, the amosite fibres being milled to an area (defined as length times the greatest cross-sectional dimension) no greater than 4 sq.m.m. and at least 95% by weight of the fibres and fibrous bodies having an area less than .16 sq.m.m., and the chrysotile fibres being milled so that 97% by weight of the fibres and fibrous bodies have an area no greater than 2.25 sq.m.m.  It is stated that the asbestos sheet is substantially free from fibrous bundles.  The sheets may be formed by wet machine procedures, or by the addition of water to the ingredients deposited on a conveyer as a thin sheet, or by shaping an appropriate mix.  The sheets may be cured by means of air, or an underwater or steam cure.  The calcareous cementitious material may comprise portland, alumina or slag cement, hydrated sand-lime, or calcium silicate.  Various forms of silica, insert fillers, and colouring pigments-for example carbon black-may also be added.
Patent GB-200323-A (GB)
Title: Improvements relating to securing devices for tins or canisters of the "lever" type
IPC: B65D55/04
Filed: 1922-06-06
Abstract: 200,323. Laine, L. June 6, 1922. Detachable stoppers secured by clamping- devices; sealing-devices for stopper and other closures. - In a device for preventing accidental or unauthorized opening of a tin or canister provided with a " lever " lid and comprising two or more clips a, Fig. 1, pivoted together at g, the outer end of each clip is formed as a circular arc of substantially the same radius as the bead of the tin &c. and its end is bent over to engage the bead and press the lid on to the seat. To indicate unauthorized removal of the device, a paper seal may be placed' over the central portion thereof, or the clips may be formed with lugs h, Fig. 8, provided with holes j which coincide and are adapted to receive a sealing wire when the clips are in the operative position.
Patent GB-496887-A (GB)
Title: Improvements in or relating to the manufacture of cellulose
IPC: D21C3/26
Filed: 1937-06-07
Abstract: Cellulose is obtained from wood or other ligno-cellulosic materials by dissolving out a substantial proportion of the lignin by heating the materials under pressure with a relatively dilute solution of alkali, increasing the concentration of the alkali by evaporating water therefrom, and further heating the materials under pressure with the more concentrated alkali so produced.  The heating and concentration are preferably carried out without removing the alkali from the cellulosic material, but the alkali may be run off before concentrating, in which case the material is advantageously kept immersed in hot water during the concentration, or the dilute alkali in any one digester may be replaced by a solution obtained by concentrating the alkali from another digester.  In examples a 3 1/2 per cent caustic soda solution is used at 160 DEG  C. or 120-160 DEG C. in the first stage, half of the water is then evaporated and a temperature of 160-165 DEG  C. used in the second stage. The cellulose obtained may be further purified by successive treatments with hot dilute alkali and cold more concentrated alkali.  If the cellulose is to be esterified it is first subjected to a pretreatment with an organic or inorganic acid, e.g. acetic, formic or sulphuric acid, and the acid may be neutralized before esterification. Specifications 263,938, [Class 2 (ii)], 420,099, and 459,790 are referred to.
Patent GB-581282-A (GB)
Title: Improvements relating to domestic washing machines or boilers
IPC: F16K5/00
Filed: 1944-08-18
Abstract: 581,282. Washing boilers. PHILLIPS, Ltd., A., and HALL, S. C. Aug. 18, 1944, No. 15786. [Class 64 (i)] [Also in Groups VIII and XXIX] A draining tap for an enclosed domestic washing boiler or machine 4 is made in sections, one of which 5, carrying the valve, is fixed to the bottom of the pan and lies wholly within the casing, while the other section 9 has a pivotal connection with it and forms a combined outlet spout for the tap and a handle by which the valve is operated. When turned to the position for opening the valve, the pivotal section projects' through a slot 6a provided in the casing and when turned to the valve closing position it makes a flush closure with the slot. The valve is of the plug type and its axis may be vertical instead of horizontal, as shown.
Patent GB-153245-A (GB)
Title: An improved weight-operated motor
IPC: F03G3/00
Filed: 1920-06-10
Abstract: 153,245. Williams, H. June 10, 1920. No Patent granted (Sealing fee not paid). Driving-mechanism, weight.-The first wheel a of a clock train is provided with internal teeth b and a long lever f, for which the hub g of the wheel constitute the fulcrum, has a pawl c to engage them. The end of the lever projects into a concentric track n for a ball k which is detached from a series at the top to give the lever a driving- load till it reaches the bottom of the curve where the ball drops off and runs into a well t. The pawl then acting as a counterweight and slipping over the teeth brings the lever up to take an. other ball by striking the detent q which normally locks the detaching star-wheel p. A bucket a provided at the bottom of the well t to receive the used-up balls is raised when full by a cord u to return them to the track. The capacity of the charged head of the track may be increased by folds o. There may be more than one lever f for the wheel a, and additional internally toothed wheels with levers f may be provided on the spindle of the wheel a.
Patent GB-1498653-A (GB)
Title: Method of forming a tyre carcass
IPC: B29C67/00
Filed: 1975-04-17
Abstract: 1498653 Moulding tyres CATERPILLAR TRACTOR CO 17 April 1975 [12 June 1974] 15908/75 Heading B5A [Also in Division B7] A tube-tyre carcass is formed by helically wrapping elongate resilient material about and along substantially the entire body of a disintegrable toroidal core, helically winding elongate flexible substantially inextensible material about and along substantially the entire body of the core, helically wrapping additional elongate resilient material about and along substantially the entire body of the core, and applying a vacuum in the area of the substantially inextensible material between the first mentioned resilient material and the additional resilient material. In the preferred method the carcass is formed by winding layers of rubber material 22, 41, substantially inextensible material 46 such as wire, and rubber bond material 48 sequentially around a toroidal, porous sand core while the latter is rotated about its axis. After winding the rubber material 22, a vacuum is applied to the core via valve fittings 24, 26, and the material is stitched by means of stitching rollers 40, 42 rotated around the core while the latter is rotated. The rubber material 41 is similarly stitched (stitching may take place only after application of the material 41). The substantially inextensible material 46 is then wound on to the core, and the vacuum is released. Rubber bond stock is applied to the areas of the valve fittings, if necessary, and pressure is applied via the valve fittings to check for leaks. The rubber bond material 48 is then wound around the core, followed by rubber layers 50, 52 applied circumferentially of the carcass. A stitching roller 56, replacing rollers 40, 42, is rotated around the core while the latter is rotated about its axis so that rubber material 48 is forced into the spaces between the convolutions of the material 46, and simultaneously air pockets in layer 46 are evacuated via probe 54. The latter is moved periodically to adjacent the stitching operation.
Patent GB-380107-A (GB)
Title: Improvements in or relating to the treatment of cream
IPC: A23C13/08
Filed: 1931-06-01
Abstract: A cream, the fat content of which is equivalent to or greater than that of butter and which is obtained by pasteurizing centrifugally produced cream and then recentrifuging it, is passed whilst hot into containers which are immediately sealed under vacuum.  The containers may then be cooled prior to transportation.  The whole of one day's production of cream may be collected in one receptacle in which it is agitated by mechanical means and while still hot passed into the containers.ALSO:A cream, the fat content of which is equivalent to or greater than that of butter and which is obtained by pasteurizing centrifugally produced cream and then recentrifuging it, is passed whilst hot into containers which are immediately hermetically sealed, if desired under vacuum.  The containers may then be cooled prior to transportation.  The cream may be converted into butter by kneading and, if desired, salting.  The whole of one day's production of cream may be collected in one receptacle in which it is agitated by mechanical means and while still hot passed into the containers.
Patent GB-960193-A (GB)
Title: Improvements in or relating to respiratory masks
Inventor: WOOD ROBERT ALAN
IPC: A62B18/08
Filed: 1962-04-26
Abstract: 960,193. Respiratory masks. AIRMED Ltd. April 26, 1963 [April 26, 1962], No. 16011/62. Heading A5T. A respiratory mask is fastened to headgear by links at each side, each link being attached through the intermediary of an attachment member 6 slidable over a base member 5 attached to the headgear under the control of coaxial screws 8, 9 of opposite hand which are attached to the attachment member and the base member respectively and have threaded engagement with a common control member 12. Flaps 7 on each base member which is attached to a helmet by snap fasteners 13 are bent to form guide channels for the attachment members each of which has a hook 14 for securing a swivel eye 15 attached to the appropriate flexible link. The screws 8, 9 are threaded into opposite ends of the control member which is cylindrical. On rotating the control member the screws approach or recede from one another thus adjusting the attachment member relative to the base member. One screw 9 is hollow to receive the other screw 8 telescopically as they approach. Specifications 779,943 and 877,032 are referred to.
Patent GB-735547-A (GB)
Title: Substituted 8-quinolinols
IPC: C07D405/06
Filed: 1953-06-10
Abstract: The invention comprises 5-acyl-7-tertiary aminomethyl-8-quinolinols, in which the 5-substituent contains an aryl or heterocyclic radical attached directly or through an alkyl radical to the C-atom of the CO group.  The tertiary amino group may contain 2 similar or different alkyl groups with or without hetero-atoms, and which may be substituted, or which may together form a saturated heterocyclic ring with the N; also a method of obtaining them by reaction of the 5-acyl-8-quinolinol with formaldehyde and a secondary amine or by reaction of an aromatic or heterocyclic aldehyde with 5-acetyl-8-quinolinol substituted as above by a tertiary aminomethyl radical.  In examples, 5 - benzoyl - 8 - quinolinol, the corresponding para - chloro, 21 - chloro -, and 21 - 41 - dichloro benzoyl - 8 - quinolinols are treated with dimethylamine and formaldehyde, to give the corresponding 5-benzoyl or -chlorobenzoyl - 7 - dimethylaminomethyl - 8 - quinolinols; 5 - cinnamoyl - 8 - quinolinol reacts similarly with corresponding amines, to give the 7 - dimethylaminomethyl compound, the 7-di - N : N1 - p - hydroxyethyl - and the 7-diethylaminomethyl compound; and the preparation of other derivatives including the 7-(1 - piperidyl)methyl -, 7(4 - methyl - 1-piperazyl ,- 7 - methyl - N - n - dodecylaminomethyl -, 7 - (1 - pyrrolidyl)methyl -, 7 - N : N1-bis(b  - diethylaminoethyl)aminomethyl -, and the N - ethyl - N(b  - diethylaminoethyl) aminomethyl - compounds, is described; the 5 - o - cinnamal - acetyl - 7 - dimethylaminomethyl, 5 - b  - phenylpropionyl - 7 - dimethylaminomethyl -, 5 - benzoylacetyl - 7 - dimethylaminomethyl -, are also specified; other products specified include 7-dimethylaminomethyl-8-quinolinols having in the 5-position the following groups: 3 : 4 dimethoxycinnamoyl-, furfurylideneacetyl -, 5-nitrofurfurylideneacetyl-and 6-quinolylidene acetyl, and a table gives the amoebicidal activity of several of the products.  The second method of reaction is exemplified by the reaction between 5-acetyl-7-dimethylaminomethyl-8-quinolinol and benzaldehyde to give the corresponding 5-cinnamoyl-derivative.  5-Acyl-8-quinolinols may be obtained by a Friedel-Craft reaction between an acylchloride and 8-quinolinol.
Patent GB-494502-A (GB)
Title: Improvements in or relating to television receivers
IPC: H04N3/20
Filed: 1938-05-30
Abstract: 494,502. Television receivers. FERRANTI, Ltd., TAYLOR, M. K., and WOOD, H. May 30, 1938, No. 16041. [Classes 40 (iii) and 40'(v)] Received signals are applied to the cathode 17 of a cathode-ray tube while the control electrode 20 is maintained at a constant potential. This mode of operation ensures that excessive emission from the cathode does not occur during the period when the receiving valves are warming up. The signal rectifying diode 4 has its anode earthed over condenser 12 and negatively biassed from potentiometer 10.
Patent GB-674697-A (GB)
Title: Improvements in grips for golf clubs and the like
IPC: A63B53/14
Filed: 1950-06-27
Abstract: 674,697. Handle-grips. C.S.I. SALES CO. June 27, 1950 [July 12, 1949], No. 16066/50. Class 61 (i). [Also in Group XV] A handle-grip for a shaft comprises a spirallywrapped strip 30 of flexible stretchable material such as rubber formed with a flange 31 along one edge and a cut away 35 along the other which receives the flange 31 when the strip is wrapped. The flange 31 is continued at the lower end in a strip 61 which is wound round the shaft and bound with tape 70 or twine. The shaft top may be fitted with an internal or external cap 21 and the flange 31 has an extension 60 which is first wrapped round the upper end of the shaft. Alternatively, the upper end of strip 30 may be integral with a shaft cap. The upper and lower ends of strip 30 have bevels 51, 50 respectively. The edges of the exposed part of strip 30 are rounded to form a groove 49 which may hold a reinforcing or decorative strip. In modifications, the strip 30 may have elliptical perforations 170 which become circular when the strip is stretched in wrapping and which are backed by a strip 71 of contrasting colour in the cutaway 35 (Fig. 15), or the strip may be formed of two staggered strips 73, 74, the former having the perforations 170 and the latter being of contrasting colour (Fig. 16).
Patent GB-561382-A (GB)
Title: Gain regulating circuits for signal transmission systems
IPC: H04B3/10
Filed: 1942-11-13
Abstract: 561,382. Automatic volume control. STANDARD TELEPHONES & CABLES, Ltd. (Western Electric Co. Inc.). Nov. 13, 1942, No. 16077. [Class 40 (iv)] [Also in Group XL] A regulating circuit in a signal transmission circuit is provided with means on the failure of the pilot current to hold the regulator in the last operated position. The Figure shows an amplifier 1 connected to a coaxial cable with a variable attenuator 11 connected across the feedback path 12. The attenuator comprises an indirectly heated thermistor which may be formed according to Specifications 540,844 and 545,679, [both in Group XXXVI], and a heating coil 14 fed from a controlled audio-frequency oscillator as described in U.S.A. Specification 2,179,915. The control is effected by the pilot current derived through a crystal filter 16 and amplified in a stage 19 before application to a diode 26 having a load 32 ... 35. Regulation is effected through a variably biassed oscillator controlled in accordance with the pilot input, a condenser charged from both the output and input circuits of the oscillator serving to maintain the oscillator output constant when the pilot current fails. The bias of the audiooscillator 44 is derived from the diode load, but on failure of the pilot current, relay 48 releases and transfers the control to condenser 53. One plate of condenser 53 is at the same potential as the grid of the oscillator 44, while the other plate is at a potential depending on the rectified oscillator output. As shown, a diode 56 is used, but alternatively a copper oxide rectifier is used associated with an additional winding on the oscillator output transformer. Resistance 54 is provided to prevent condenser 53 from heavily damping the bias. Specification 545,866 also is referred to.
Patent GB-843992-A (GB)
Title: Breathing apparatus for divers
IPC: B63C11/22
Filed: 1958-05-20
Abstract: 843,992. Respiratory appliances. SPIROTECHNIQUE. May 20, 1958 [May 22, 1957], No. 16160/58. Class 81(2)] In an open-circuit breathing apparatus for divers of the kind comprising an air inlet regulator having a diaphragm subject on one side in addition to the pressure of the ambient water to a force for affecting delivery to the diver of air at a pressure greater than that of the water at the thrust centre of the diaphragm when said centre is higher than the centre of pressure of the water pressure on the chest of the diver and an exhaust valve close to said thrust centre, the valve is subjected to the component in a direction to close the valve of a constant vertical force in order to prevent opening of the valve when the pressure therein is greater than the water pressure at the level of the valve. As shown in Fig. 1, the inlet valve 3, which is controlled by the inhalation of the user, is loaded by a weight P, and the duck bill exhalation valve 4 is subject to the upward pressure of a float 6 or, alternatively, to the downward pressure of a weight. If the diaphragm becomes inclined to the horizontal, the diaphragm and the valve 4 are subjected respectively to a pressure close to a component of the weight P and the pressure applied by the float 6 or the weight, to compensate for the change in vertical distance between the thrust centre of the diaphragm and the valve 4. The latter may be weighted and positioned in the diaphragm.
Patent GB-1535329-A (GB)
Title: Dual channel photo-optical clot detection apparatus
IPC: G01N33/86
Filed: 1975-12-19
Abstract: 1535329 Sample tray WARNER-LAMBERT CO 19 Dec 1975 [8 Jan 1975] 16220/77 Divided out of 1535328 Heading G1B A circular sample tray for use in the photooptical clot detection Specification 1535328 comprises a flat tray of transparent plastics material, an inner circular array of cuvettes 86 formed about the centre of the tray and extending out of its plane, an outer circular array of cuvettes 84 concentric with the inner array, each cuvette 84 being radially aligned with a cuvette 86, and radial ribs (92), Fig. 2 (not shown) extending between pairs of radially aligned cuvettes, the radial ribs being joined by outer and inner circular ribs 94, 90. The tray may be of polyvinyl chloride, cellulose acetate, cellulose proprionate or polyproprionate, and may have an indent (48), Fig. 1 (not shown) to locate it on an incubation plate which has a similar indent.