baber/WOPTO huggingface dataset:
Patent GB-759568-A (GB)
Title: Improvements in or relating to level-control circuits for level-control in accordance with a pilot signal
IPC: H04B3/14
Filed: 1954-07-26
Abstract: 759,568. Automatic volume control. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 26, 1954 [July 24, 1953], No. 21821/64. Class 40 (4). [Also in Group XL (b)] For a pilot controlled gain regulating system wherein a line balance impedance comprises a number of shunt attenuator sections including a resistor and a variable capacitor in series for dealing with different parts of the frequency band, the rotors of the variable capacitors are ganged to a common shaft so that when the shaft is driven by a mechanism controlled in accordance with the level of the pilot signal the values of the capacitors are varied in the same sense. The auto-transformer 21 ensures a minimum of self-inductance in the circuits dealing with the higher frequencies, and transformer 22 besides including an anti-parasitic circuit 23 across its primary is capacitatively shielded to minimize the effect of parasitic transformer capacity at the low frequencies. A pilot current detected and amplified in pilot receiver 6 controls maximum and minimum relays 29, 30, in the control circuit of a motor 20 which is coupled to drive the ganged condenser. Matching of the network to the cable 1 is facilitated by equalizer 2. A modified arrangement including a bridge " T " type network having a variable inductance also coupled to the motor shaft to provide the more accurate matching necessary for television transmission systems, is described with reference to Fig. 2 (not shown). In this arrangement the attenuator section and the bridging arm are reciprocal impedances, and the matching is improved by a correcting network in one of the series arms. The remaining attenuator sections may also be incorporated in filter sections. Line and attenuator characteristics are described with reference to Fig. 3 (not shown) and component values are given. Control of the motor over an auxiliary line is also referred to.
Patent GB-860536-A (GB)
Title: Improvements in or relating to pneumatically operated tools
Inventor: COOMBES FRANK BROWN
IPC: B23Q11/08
Filed: 1956-07-16
Abstract: 860,536. Percussive tools. HOLMAN BROS. Ltd. July 11, 1957 [July 16, 1956], No. 21889/56. Class 124. A manually operated pneumatic percussive tool is provided with control means comprising a valve body having an inlet for liquid under pressure and an outlet leading to a dustsuppressing spray, a valve member movable to open and close a connection between the inlet and outlet by the manual control of the tool so that the liquid connection is opened when the air valve is opened, and a locking member operated by water pressure so that air cannot be admitted to the tool unless the water pressure is sufficient to move the locking member to the unlocked position. As shown, a tool has a manually controlled air and water valve 5, urged into the closed position by a spring 7, and a locking piece 9 which moves transversely of the valve and is urged into the locked position by a spring 10. The locking press has a hole of keyhole shape, the narrow part of which admits a reduced part M of the valve 5 but not the broad portion J which is however admitted by the wider part. If the water pressure is sufficient, say over 15 lbs./ sq. inch, on depressing the thumb-piece 2 the locking piece 9 is moved against the spring 10 to allow the part J to enter the wider part of the hole and the air and water valves open. Failure of water pressure during operation of the drill does not stop action, but, after stopping, the drill cannot be restarted. The device is stated to be readily applied to existing drills which are not provided with water supply arrangements.
Patent GB-693574-A (GB)
Title: Improvements in or relating to machines suitable for use in the manufacture of bootsor shoes
IPC: A43D71/02
Filed: 1950-09-06
Abstract: 693,574. Stapling. BRITISH UNITED SHOE MACHINERY CO., Ltd. (United Shoe Machinery Corporation). Sept. 5, 1951 [Sept. 6, 1950], No. 21921/50. Addition to 614,503. Class 89 (iii). In a boot-making machine for securing uppers to insoles by fastenings e.g. staples which do not pass through the work but are curved away from the sole edge by a deflector which penetrates the work before the driving of a fastening, the deflector 120 is operated by means including a toggle 190, 192 and is,adjustable towards and from the driver 56 to vary the curvature imparted to the fastening. The machine described in the parent Specification is modified in that the deflector 120 is operated from the drive-actuating bell-crank lever 92 through a cam roll 188 engaging a slot 186 in a lever 184 which is pivoted on a shaft, 78 carrying also a lever 180 which is coupled by a link 179 to arms 178, 172 and a pin 167 and slot 170 to the deflector. The levers 180, 184 are rigidly connected together by the spring-straightened toggle 190, 192. When the toggle is broken by the engagement of an extension 204 of the cam roll 188 with a bell-crank lever 200 coupled to an extension 197 of the upper toggle lever 192, the deflector 120 is withdrawn by a spring 182 engaging the arm 180. The deflector 120 has a cylindrical stem 126 slidable in a bore 130 in a block 132 which is mounted on a bracket 148 by flanges 131 engaging grooves 147 to permit of adjustment of the deflector to and from the driver 56. The bracket 148 is mounted on a bracket 24 by a grooved block 27 which permits adjustment in two directions at right angles. The slot 170 is enlarged at 171 to permit removal of the deflector from the machine. Specification 294,640, [Class 89 (iii)], also is referred to.
Patent GB-1005803-A (GB)
Title: Improvements in or relating to the protection of materials from attack by microorganisms
IPC: A23L2/44
Filed: 1962-06-07
Abstract: Materials such as foods, plants and plastics are preserved from attack by microorganisms by treatment with sorbic hydroxamic acid or a salt or functional derivative thereof.  The sorbic hydroxamic acid may be mixed with the material, may be applied to the surface mixed with an excipient such as fine chalk, an organic or an oily solvent or a wax, applied in an aqueous form prepared with the aid of a wetting agent such as a soap, glyceryl monooleate or sorbitan monooleate, or may be applied to wrappers for the materials. Examples are concerned with preservation of grape juice, slices of Cheddar cheese, loaves of bread, slices of smoked eel.
Patent GB-532720-A (GB)
Title: Improvements in or relating to control apparatus for the remote control of motors
IPC: G05D3/12
Filed: 1939-07-28
Abstract: 532,720. Remote control of electric motors. WARDLEY, F. W. (Bendix Aviation Corporation). July 28, 1939, No. 22034. [Class 40 (i)] [Also in Group XXXVII] A control member C, Fig. 1, which may be the tuning element of a radio set is driven intermittently to a pre-selected position through gearing 20, 22, 25, 15, 14 from a motor B. With a control switch 80 on a selected contact 76, or 78, a forward field 70 of the motor B is energized through a corresponding contact 56 or 58 of a switch 50, and the motor operates the member C until a recess 61 of the movable element of the switch 50 is brought into line with the contact 56 or 58, the main energizing circuit for the motor is at this position opened but an auxiliary circuit is held over contacts 26 of a cam switch until the motor operates to open the switch 26. This movement of the motor takes place during a period of dwell of the control member C, and should the motor overrun a switch 27 is closed to reverse the motor. The position of the member attained in this way corresponds to the contact 76 or 78 selected. While the control member C is at rest between the steps of intermittent motion the gearing 20, 22, 25 is effective to lock it until the next step movement takes place.
Patent GB-189193-A (GB)
Title: Improvements in, or relating to, rotary apparatus for drying road and other material, calcining or roasting ores, low-temperature distillation of fuel, and apparatus forsimilar purposes
IPC: F26B11/04
Filed: 1921-08-19
Abstract: 189,193. Wake, J. F. Aug. 19, 1921. Continuous and automatic discharge apparatus, rotary. - Relates to apparatus for drying road materials, &c., calcining ores, and distilling fuel, of the kind comprising a rotary scroll drum through the convolutions of which the material passes in contact with a heating medium, and consists in providing means for positively passing hot air or products of combustion through the scroll passages in a direction opposite to that followed by the material. As applied to the drying of stone for making tar-macadam, the stone is fed by the shoot m, Fig. 1, to the centre of the scroll b of the rotor and passes to the periphery of the scroll and is discharged through the radial tube o and the trunnion g which is provided with a helical vane p. Meanwhile a current of hot air or fluid from a furnace is forced or drawn through the tube q into the trunnion g, and through the scroll channels in the opposite, direction to the material and is exhausted through the shoot to the pipe r. The rotor casing consists of plates c connected by distance pieces to which the scroll is secured, and is supported upon rollers i and rotated through gearing j, k from a pulley l. The scroll channels may be provided with lifting- vanes. In a modification, the axle g<1>, Fig. 4, which is driven through worm-gearing, is substituted for the trunnion g and the fluid is supplied through the flue q<1>, the material falling into the discharge, shoot o'. In a further arrangement, the scroll is formed of concentric plates b<1>, Fig. 8.
Patent GB-631428-A (GB)
Title: Improvements in and relating to industrial belts
IPC: F16G5/10
Filed: 1947-08-08
Abstract: 631,428. Belt gearing. DAYTON RUBBER CO. Aug. 8, 1947, No. 22070. Convention date, March 8, 1943. [Class 80 (i)] A V-type driving belt of rubber material comprises a tension section 16, a neutral section 17 with reinforcing cords 18, and a compression section 19. These three sections are covered by a fabric wrapping 20 and a helically wound wire 21 embedded in a final outer layer 22 of rubber. In the manufacture the belt is built up with the three sections, the wrapping 20, and the wire 21, and then subjected to vulcanisation under pressure so that the rubber exudes through the wrapping 20 to form the outer layer. More than a single strand of wire 21 may be used and the cords 18 may be of cotton, rayon or glass, or may be replaced by strands of wire or cable. The various sections of the belt may be of rubber composition and include a fibre re-inforcement.
Patent GB-755847-A (GB)
Title: Improvements in milling cutters
Inventor: RUSHTON FRANK
IPC: B23C5/24
Filed: 1953-08-11
Abstract: 755,847. Milling-cutters. BRAYSHAW FURNACES & TOOLS, Ltd. Aug. 10, 1954 [Aug. 11, 1953], No. 22102/53. Class 83 (3). A milling-cutter comprises tapered blades B, each wedged in a tapered slot in the body A by a shim b<SP>1</SP>, the contacting faces of the blade and body having inter-engaging serrations inclined at an acute angle to the bottom of the slot. The blades are adjusted by inserting shims of different thickness while maintaining the serrated faces in engagement. The blades may cut on alternate sides.
Patent GB-1097316-A (GB)
Title: Latching device for luggage
IPC: E05B65/52
Filed: 1965-05-25
Abstract: 1,097,316. Latch fastenings. PRESTO LOCK CO. Inc. May 25, 1965 [July 28, 1964], No. 22107/65. Heading E2A. A latching device D for luggage, cooperable with a hasp. comiprises a flat mounting plate 50, Fig. 11, having an aperture 76 extending therethrough, a frame member 52 suspended from the mounting plate, hasp-engaging means 62 intermediate the mounting plate and the frame member, a resiliently mounted plunger 58 to actuate the hasp-engaging means having a push button portion positioned in the aperture 76 the top surface of which normally lies in substantially the same plane as the top surface of the mounting plate, a stud member 54 secured to the frame member and having an upstanding protuberance 106, and means  movable with the plunger formed for telescoping co-operation with the protuberance to allow movement of the plunger and the haspengaging means to a hasp-disengaging position. As described the device D is mounted in a channel of a valance member A, Fig. 2, secured to a case section C and co-operates with a hasp secured to a second case-section C<SP>1</SP>. The means movable with the plunger for telescoping cooperation with the protuberance is a blocking member 64, having an aperture corresponding in shape to the protuberance 106 and rotatable about its axis from a position in which it can telescope over the protuberance to a position in which such telescoping is prevented and the plunger is locked against movement to its hasp disengaging position. A key barrel 68 is rotatably mounted in an aperture 70 in the plunger 58 and by inserting a key in the barrel so that a tang thereof engages a detent 138 on the member 64 this member can be rotated to its blocking or unblocking positions being resiliently held in one of these positions by projections 144, 144<SP>1</SP> thereon contacting bumps 130, 130<SP>1</SP>, 132, 132<SP>1</SP> on a ring member 67 non-rotatably mounted in the plunger 58. The hasp-engaging means 62 comprises two plates 150, 150<SP>1</SP> secured to the plunger 58 and urged to the latching position by a spring 142, the plates having prongs 152, 152<SP>1</SP> which engage in apertures 180 in the hasp. Cam surfaces 158, 1581 allow the device to latch automatically. When the plunger is depressed spring members 56a, 56b eject the hasp from the device. The plunger and haspengaging means are guided during movement by shanks 80, 80<SP>1</SP> which also secure the frame member 52 to the mounting plate 50.
Patent GB-1581359-A (GB)
Title: Substituted acetylenic compounds
IPC: C07D333/22
Filed: 1977-05-25
Abstract: The compounds of formula I, in which R<1> is H, alkyl, aralkyl or diaralkyl, R<2> is H or a halogen and R<3> is H, alkyl, aralkyl, aryl, aryloxy, benzoyl or 2-thienocarbonyl, R<2> and R<3> not being simultaneously H, are obtained by halogenation of a ketone of formula II, followed by dehydrohalogenation of the intermediate halogenated derivative of formula III by means of a strong base. The compounds of formula I are useful as intermediates for the preparation of pharmaceutically active compounds. <IMAGE>
Patent GB-1333613-A (GB)
IPC: G03C5/46
Filed: 1971-04-19
Abstract: 1333613 Forming dye images from metal images EASTMAN KODAK CO 19 April 1971 [25 Feb 1970] 22118/71 Heading G2C An imagewise distribution of a metal having a standard oxidation potential more positive than - 0À98 volts is converted to animagewise distribution of a formazan dye by treating the metal image in the presence of a water soluble diffusible tetrazoluim salt with an aqueous solution of a diffusible metal complexing agent which forms a complex with silver ions having a smaller cumulative equilibrium constant # 2  (defined as the concentration of silver ion complex divided by the concentration of silver ion which latter concentration is multiplied by the concentration of complexing agent squared) than the complex of silver ions with cyanide ions; the solution reaction potential E (which is the sum of two half cell reactions E oxidation + E reduction) of the aqueous solution being at least +0À01 volt. The tetrazoluim salt is preferably present in aqueous solution, and preferably has one of the formulae:- wherein R<SP>1</SP> and R<SP>3</SP> represent a substituted or unsubstituted aryl or heterocyclic group; R<SP>2</SP> represents a substituted or unsubstituted aryl or heterocyclic group, H, alkyl mercaptoalkyl, OH, carboxyester, amino which may be substituted, carbamoyl which may be substituted by methyl, ethyl or phenyl groups, sulphamoyl, sulphonamido, carbonamido, NO 2  or a carboxy or sulpho group or a salt thereof; X is a anion; D is an arylene or arylenealkylenearylene group; and E is an alkylene, arylene or arylenealkylene group. The formazon dye formed may be diffusible or non-diffusible. The metal may be silver, nickel, copper, aluminium, iron, palladium, zinc, lead or tin. The complexing agent may be a water-soluble thiosulphate, thiourea, ethylenethiourea, thiocyanate, sulphurcontaining dibasic acid or a diol containing sulphur atoms, many examples of which are given.
Patent GB-736262-A (GB)
Title: Improvements in automatic telephone exchange equipment
Inventor: FOSTER WILLIAM GORDON
IPC: H04Q3/00
Filed: 1953-08-11
Abstract: 736,262. Automatic exchange systems. TELEPHONE MANUFACTURING CO., Ltd. April 2, 1954 [April 11, 1953], No. 22167/53. Class 40 (4). One line relay LA is provided for a pair of subscribers' lines and the loop is completed in the case of one line of the pair through a discriminating relay BS common to a group of lines. As shown, a calling line is extended to a connector by a preselector comprising a relay unit in which the contacts to be operated by a magnet SR are selected by finger-magnets FM1 ... FM5 controlled by the line relays and a switching relay SW controlled by BS connects up the upper or lower sets of contacts. If the preselector serves more than one group of lines, a corresponding number of relay units are provided, and relay G distinguishes between the several groups. When there are several connectors each linked with a preselector, relay TA operating in series with busy relay TB of the connector opens the similar circuit of other preselectors. The Provisional Specification refers to Specification 728,892.
Patent GB-688312-A (GB)
Title: Method for pressing of powdered substances
IPC: B30B11/02
Filed: 1950-09-08
Abstract: 87 (ii) Powdered magnetic materials or metallic oxides are vibrated, as they are pressed in a die, at an ultrasonic frequency by magneto strictive means operating on the ram of the press or on the walls of the die or on both.  Speci fication 672,366 is referred to.
Patent GB-152838-A (GB)
Title: Improvements relating to vapour condensers
IPC: F01B25/00
Filed: 1919-09-09
Abstract: 152,838. Baumann, K., and Metropolitan-Vickers Electrical Co. Sept. 9, 1919. Condenser systems.-In apparatus wherein the air is cooled in its passage from the condenser to the air-extractor by water which has been cooled by evaporation, the condensate or other water suitable for make-up is used, and returned after use, wholly or partly, to the condenser or hotwell. The air leaving the condenser 1 by a conduit 4 enters a cooler 5, of either the contact or surface type, which is supplied with cooling- water from an evaporator 8, in which a vacuum is maintained by a steam jet 9 discharging either to the condenser 1 or to a feed-heater as described for example in Specification 105,595. The water may be supplied by a pipe 7 from the discharge side of the hot-well pump 3, and after use is returned by conduits 11, 13 to the hot-well 2. The water supplied to the evaporator 8 may be cooled in a heat-exchanger 15 by the water returning to the hot-well. The water from the aircooler 5 may be returned in part to the evaporator 8 by means of an ejector 14 operated by the water supplied by the hot-well pump 3.
Patent GB-943784-A (GB)
Title: Improvements in high energy rate actuators
IPC: F15B15/22
Filed: 1961-06-20
Abstract: 943,784. Pneumatic single-stroke apparatus. GENERAL DYNAMICS CORPORATION. June 20, 1961 [June 27, 1960; Feb. 24, 1961], No. 22201/61. Heading F1P. The end 148 Fig. 7 of a piston 139 is divided into an inner disc portion 152 and an outer annular portion 151 by a resilient ring 150 by which the piston face in its retracted position makes sealing engagement with a cylinder end wall 130 on admission of compressed fluid e.g., air through a coupling 154 to the cylinder chamber 138 so as to act against a shoulder 147 of the piston end 148, and initiation of the working stroke is effected by admission of compressed air through a coupling 156 to the relatively small space bounded by the ring 150 and ends 148 and 130 of the piston and cylinder respectively thereby breaking the seal and allowing access of compressed air from chamber 138 to the whole of the rear end 148 of the piston 139. The piston is retracted by hand. In a modification the piston is guided by a rod integral therewith and projecting through the cylinder end 130 and mounting plate 136, and the cylinder chamber 138 is provided with an orificed plate through which the piston passes and which serves to throttle air pushed by the piston during its working stroke and thus damp the movement thereof. In a further modification having an orificed plate 82 Fig. 4 within the cylinder 78, the piston 76 has a conical extension 90 which gradually obstructs the orifice 88 during the working stroke of the piston. The latter is held in its retracted position by compressed air admitted through a coupling 64 and a duct 62, and to initiate the working stroke compressed air is admitted through a coupling 74, a radial duct 70 and an axial metering duct 120 to a chamber 102 formed in the piston thereby overcoming the opposing pressure and allowing an actuating air pressure in an annular chamber 38 to obtain access to the piston face through ports 34. The chamber 38 is bounded by the cylinder 78 and an outer cylinder 78 and an outer cylinder 14 having a compressed air admission coupling 68.
Patent GB-153561-A (GB)
Title: An improved tire chain and snap hook for use therein
IPC: B60C27/06
Filed: 1920-07-26
Abstract: 153,561. Fennessy, J. P. Nov. 4, 1919, [Convention date]. Spring hooks. - Double-ended snap hooks are provided for coupling the cross and side chains of a non-skid device for vehicle tyres. Each hook has the end 14 engaging the cross chain bent laterally and inwardly so as to lie substantially at a right-angle with the body 12 and the hook 17 for engaging the side chain. A closure spring 19 fixed in a groove in the hook body is twisted to engage the ends of the hooks.
Patent GB-861170-A (GB)
Title: Improvements relating to the stunning of animals
IPC: A22B3/06
Filed: 1959-06-29
Abstract: Prior to being slaughtered, animals are stunned by the passage of a pulsating direct current through a part of the body, preferably the brain.
Patent GB-641149-A (GB)
Title: Improvements in or relating to a method of defeathering poultry
IPC: A22C21/02
Filed: 1948-08-24
Abstract: A method of plucking poultry which is a modification of that described in Specification 603,639 comprises suspending the carcases from travelling means to pass them through a defeathering machine or machines which are driven first in one direction and then in the other to pluck the carcases by whipping them against and with the lay of the feathers respectively, and anchoring both ends of the carcases on travelling means when necessary to counteract the tossing action of the defeathering means.  In practice the carcases are suspended by their legs from a conveyer, the heads being secured to a lower conveyer when the machines act to whip the feathers upwardly.