baber/WOPTO huggingface dataset:
Patent GB-1105083-A (GB)
Title: Plate clamp
Inventor: PIKE CYRIL
IPC: F16B5/06
Filed: 1965-03-11
Abstract: 1,105,083. Clamp fastenings. BAYSWATER MOTORS Ltd. and J. F. BARDOLPH & PARTNERS Ltd. 11, March, 1965, No. 10284/ 65. Heading E2B. A clamp for apertured sheets 7 comprises a pin assembly having a shouldered forward end portion 2a carried for axial movement in a holder 1 so that in use the shouldered end portion is inserted in registering apertures 6 of sheets 7 whilst movement of the pin assembly into the holder effects clamping of the sheets between the shouldered forward end portion and the front end of the holder, the pin assembly being spring loaded in the rearward direction relative to the holder whilst the rear end of the pin assembly receives a nut 9 threaded thereon which is of hexagonal or other shape of non-circular cross-section whereby it is adapted to be driven against the holder by a nut running tool. In the embodiment shown the pin assembly comprises a threaded pin 3 and a pair of wire limbs 2 secured thereto by a sleeve 4 and washer 5. The spring-loading is provided by a spring 16 engaging a shoulder 19 of the holder and a collar 17 on the pin 3, and the limbs 2 are expanded when in the retracted position by a T-shaped tongue 10 engaging formations 2b thereof.
Patent GB-1260951-A (GB)
Title: Improved process for the polymerisation of vinyl compounds
IPC: C08F4/00
Filed: 1969-02-26
Abstract: 1,260,951. Polymerization. SOC. NATIONALE DES PETROLES D'AQUITAINE. 26 Feb., 1969 [27 Feb., 1968], No. 10285/69. Headings C3G and C3P. Ethylenically unsaturated compounds are polymerized in aqueous suspension with one or more free radical catalysts by a process which comprises adding the catalyst or catalysts to an aqueous suspension of the monomer, quickly bringing the suspension to a temperature T 1  at which the rate of polymerization is 2 to 20 times as fast as it would be in the absence of catalyst at the same temperature and at which the half-life of the catalyst or the most unstable thereof is 2 to 8 hours, raising the temperature above T 1  to a temperature T 2  which is above 100‹ C. and at which the half-life is less than 1 hour, the temperature rise from T 1  to T 2  taking 1 to 6 hours and being effected at a constant rate and the temperature T 2  being maintained until the desired polymerization has been effected. Specified monomers are styrene, vinyl naphthalene, methyl- and ethyl styrenes, o-chlorostyrene, and p-bromostyrene, optionally in admixture with acrylonitrile, methacrylonitrile, alkyl acrylates and methacrylates, and α-alkyl styrenes. The catalyst may be 2,5-dimethyl-2,5-perbenzoate, t.-butyl perlaurate, t.-butyl perphthalate, dicumyl peroxide, t.-butyl hydroperoxide, 2,5-dimethyl- 2,5 - di - (t. - butyl peroxy) - 3 - hexyne and 2,5-dimethyl-2,5-dihydroperoxyhexane. Modifiers, e.g. alkyl mercaptans and carbon tetrachloride; suspension stabilizers, e.g. cellulose derivatives, polyvinyl alcohol, polyvinyl pyrrolidone, gelatine, starch and tricalcium phosphate; and surfactants, e.g. sulphonates or sodium sulphoxylate, oleate or stearate; may also be present. Examples describe the polymerization of styrene in the presence of t.- dodecyl mercaptan in the presence of (1) 2,2- bis - (4,4 - di - t. - butyl peroxycyclohexyl)- propane and 2,2 - bis - (t. - butylperoxy)- butane, (2) t.-butyl perisononanoate and dicumyl peroxide, (3) t.-butyl perbenzoate, (4) di - t. - butyl peroxy - 1,1 - trimethyl - 3,5,5- cyclohexane and 2,2 - di - (t. - butylperoxy)- butane, (6) t.-butyl peracetate, (7) 2,2-di-(t.- butylperoxy)butane, (8) 2,5-dimethyl-2,5-dit.-butylperoxy hexane and (9) di-t.-butyl peroxide; the copolymerization of styrene and acrylonitrile in the presence of t.-dodecyl mercaptan, anti-oxidants, t.-butyl peracetate and 2,5 - dimethyl - 2,5 - di - t. - butylperoxyhexane; and the bulk prepolymerization of styrene in the presence of polybutadiene, antioxidants and mineral oil, followed by suspension polymerization in the presence of catalysts as in (1).
Patent GB-1077744-A (GB)
Title: Method of and apparatus for generating a complex waveform
IPC: H03B21/02
Filed: 1965-03-11
Abstract: 1,077,744. Frequency changing circuits GENERAL MOTORS CORPORATION. March 11, 1965 [March 18, 1964], No. 10342/65. Heading H3F. In a method of generating a complex waveform having a plurality of frequency components uniformly distributed over a desired band width, a basic frequency 10 is divided at 32 by two to define the centre frequency component f 0  of the desired band width and successively divided at 36 . . . 48 by factors of three, the resulting sub-multiples being modulated at 64 with the centre frequency f 0  to provide sum, difference and centre frequency components which are successively modulated at 66 . . . 76 with the remaining sub-multiples so as to provide the required spectrum at 78. Source 10 may provide a square wave at 2187 c/s. and is fed by a contact 26 of switch 30 to circuit 32 where the centre frequency 1093À5 c/s. is provided. Frequency dividers 36 . . . 48 provide frequencies f 1  . . . f 7  having a frequency range of 1 . . . 729 c/s. Filters 34, 50 . . . 62 are provided to remove harmonics and adjust the phase and amplitude of the individual sub-multiples. The output at 78 thus comprises a spectrum of 2187 frequency components equally spaced at 1 c/s. intervals around the centre frequency of 1093À5 c/s. The range of the output spectrum may be changed by switch 30 which inserts one or more decade dividers 14, 16. Triode heterodyne mixers.-Fig. 3 shows a circuit suitable for use as one of the modulators 64 . . . 76. The centre frequency f 0  is fed in push pull to the grids of two double triodes 116 . . . 122 where it is mixed with frequency f 1  fed to the cathodes. The output contains components f 0 , f 0  + f 1 , and f 0  - f 1 ; the relative amplitudes being adjustable by potentiometers 156 . . . 166. Component f 1  is absent. In Fig. 2 (not shown) each modulator 64 . . . 76 comprises an unspecified heterodyne multiplier and a variable-gain virtual-earth amplifier which superimposes component f 0  on the sum and difference frequencies.
Patent GB-380074-A (GB)
Title: Improved apparatus for the carbonisation of fuels
IPC: C10B1/10
Filed: 1931-04-08
Abstract: 380,074. Low-temperature carbonization; charging and discharging. PAMART, C., Bruay - en - Artois, Pas - de - Calais, France.-(Assignee of Compagnie des Mines de Bruay; Pas-de-Calais, France.) April 8, 1931, No. 10387. Convention date, April 23, 1930. Addition to 268,613 and 331,497, [both in Class 55 (i), Coking &c.]. [Classes 51 (ii) and 55 (i).] In an apparatus for the low-temperature carbonization of fuel in the form of agglutinating dust in which the fuel is passed through a preheating retort, an oxidizing apparatus, and a carbonizing retort as described in the parent Specifications, the oxidizing apparatus is mounted inside the rotary preheating retort, and the oxidizing air passes through it in a direction reverse to that of the material treated. The powdered fuel from a hopper 29 is fed through a mechanically-operated valve 16 to a rotary preheating retort 1, through the annular space of which it passes and is fed by blades 22 into an oxidizing tube 21 having vanes 37 which convey the fuel to a discharge conduit 31. The oxidized fuel is passed by a screw conveyer 20 into a rotary carbonizing retort 2 containing steel balls 9 retained by a grating 10. The powdered residue falls into a channel 44, and is evacuated by a distributer 54 on to conveyers 46, 47. The oxidizing air is drawn by a fan 19c through an opening 33, and in countercurrent to the charge in the tube 21, the air, which carries coal dust in suspension, passing into a separator 36 from which the dust is fed to the screw 20 and retort 2. Conduits 77, 78 remove the condensed water from the air. When, during starting, the coal is insufficiently oxidized, it may be discharged through a damper 74 and conduit 75 on to a conveyer 76. Distillates pass through a pipe 49 into a separator 50, the coke dust from which drops down to the distributer 45, and the gases and vapours rise through a vertical shaft, and enter a branch 51 in which they are sprayed with water from an injector 53, before they reach a drum 52 and main 48. Scrapers 54 .. 57 are provided in the separator and condenser. Counterweighted valves 39, 40 are provided which only open when sufficient fuel collects above them. The distributer 45 operates only if the level of the semi-coke in the channel 44 rises to an amount determined by a counterweight 70, Fig. 4, which rests on the surface. A link 66 from one of the retort-carrying rollers 6a oscillates a lever 67, which by link and lever 68, 69 reciprocates the counterweight 70. When the semicoke rises in the channel 44, the counterweight 70 is stopped, and the pawl 71, which is attached to the bar 68, engages with the ratchet wheel operating the distributer 45. A fuel supply valve 16 is operated by an eccentric or shaft 60, and a link 62, Fig. 3, the end of which is mounted in a slide block which is moved by a crank 65 along a lever 63 to alter the position of the link from 62a to 62b, and vary the movement of a ratchet wheel operating the valve 16.
Patent GB-551988-A (GB)
Title: Improvements in or relating to gas producer plant for use with internal combustion engines
IPC: C10J3/00
Filed: 1941-08-15
Abstract: 551,988. Separating dust from gases. COMPANHIA DE CARRIS, LUZ E FORCA DO RIO JANEIRO, Ltda. Aug. 15, 1941, No. 10429. Convention date, Aug. 17, 1940. [Class 8 (ii)] [Also in Groups XII and XXVII] A gas-producer plant adapted for use on motor vehicles includes two groups of cooler units B traversed by the gases from the producer A in parallel. Each group comprises two cooler units 10 traversed by the gases in series and is in connection with separate filters C from which the gases pass through a mixing value D to the engine. Each filter comprises an inner perforated cylinder 21 between which and an outer casing 13 is disposed a filtering element consisting of wire gauze folded in a zig-zag manner and covered with fabric. A distributer 23 is disposed adjacent the gas inlet and causes disposition of impurities, the clean gas passing to an outlet 18.
Patent GB-231681-A (GB)
Title: Improvements in and relating to automobile headlight reflectors
IPC: F21V7/04
Filed: 1924-04-28
Abstract: 231,681. Gentle, C. April 28, 1924. Reflectors.-A vehicle lamp reflector comprises a central parabolic portion 4 surrounded bv non-parabolic portions 3 depressed from the parabolic surface of the reflector, the sides of the portions 3 curving inwardly to form ribs 5, the edges of which lie in the parabolic curve of the reflector. The ribs 5, which extend radially from the forward edge of the reflector to the outer edge of the central portion, are at right-angles to each other and may be arranged horizontally and vertically or at an angle of 45‹ to the vertical as shown in the Figure. The reflector may be stamped out from a single sheet of metal.
Patent GB-1212345-A (GB)
Title: Improvements in or relating to visual simulation apparatus
Inventor: DUNFORD MICHAEL JOHN
IPC: G09B9/05
Filed: 1967-03-06
Abstract: 1,212,345. Training motor vehicle drivers. REDIFON AIR TRAINERS Ltd. 29 Feb., 1968 [6 March, 1967], No. 10492/67. Heading B7H. In a visual simulation apparatus having a visual model 11 able to make controlled movements in all horizontal directions, ball or swivel castors 16 engage a horizontal plane surface 17 to support a disc or plate 15 on which the model is mounted and the controlled movements are imparted to the disc or plate 15 by a friction drive wheel assembly in permanent driving contact with the underside of the disc or plate. The ball or swivel castors 16 may be mounted in the disc or plate 15 or in the horizontal plane surface (Fig. 2, not shown). The drive wheel assembly preferably comprises two friction drive wheels 18 in tandem which are vertically adjustable or spring-loaded against the underside of the disc or plate 15. A lip or rim is provided on the base structure to prevent the disc 15 from running off the drive wheels 18. Steering movements and the rotational speed of the drive wheels 18 are controlled by simulated drivers steering and speed controls.
Patent GB-105806-A (GB)
IPC: F02M9/127
Abstract: 105,806. Pickering, J. T. May 9, 1916. Spray carburettors.-Primary air ports 7' and secondary air ports 7 are supplied from the single air inlet 2 and jacket 6, and are controlled simultaneously but in opposite manner by a choke tube 4 which is moved axially by the air valve 10 through gear wheels 20, 18, pin 15, and circumferential groove 11. The throttle 10 is actuated by a lever 21 which may move over a scale. With the throttle 10 closed, the choke tube is at its highest point; the valve may then be opened slightly without appreciably moving the choke tube, thus giving a rich mixture for starting. Further movement of the valve 10 causes the choke tube to descend until, when the valve 10 is fully open, the choke tube is in its lowest position, primary air is cut off, and a weak mixture is produced. A needle valve 26 controls the flow of fuel to the nozzle.
Patent GB-550432-A (GB)
Title: Improvements in ship construction
IPC: B63B3/00
Filed: 1941-08-20
Abstract: 550,432. Double-bottom ships. ROY, J. Aug. 20, 1941. No. 10616. [Class 113 (ii)] A ship has a double-bottom tank 1 which is bounded laterally by longitudinal margin girders 3 of which the lower portions 9 form external antirolling strips, and the midship width of the tank top 4 is from three-and-ahalf to eight times the depth of the centre girder 2 of the tank. A bilge circling 8 flush with the tank top 4 may be provided. Continuous longitudinal deck girders 12 form the sides of the hatches in the upper deck 11 and provide protection for steam and other piping 15. The deck portions 1 a between the hatches are raised to hatch level.
Patent GB-887242-A (GB)
Title: Electrically controlled gear drive
IPC: H02P29/00
Filed: 1959-03-26
Abstract: 887,242. Automatic speed-control systems. ZELLWEGER Ltd. March 26, 1959 [Aug. 8, 1958], No. 10643/59. Class 38 (4). In an automatic speed-control system, a motor 1 through a pinion 2 drives a gear-wheel 14 to which is secured an axle for a double planet-wheel 16 meshing with a sun-wheel 17 driving a load 24 through a shaft 25. The double planet-wheel 16 also meshes with a sun-wheel 18 geared to a sun-wheel 8 through a shaft 26, intermediate gears 27-29 and a shaft 9. The sun-wheel 8 is geared to a sunwheel 6 driving a shaft 7 through a double planet-wheel 5, the axle for which is secured to a gear-wheel 13 driven through an intermediate gear 15 from the gear-wheel 14. Shafts 7, 9 are connected to magnetic powder brakes 10, 11. The speed of the load shaft 25 is sensed by a tacho-generator 23 generating a voltage U2 which is compared with an adjustable reference valve U1 at the input to an amplifier 30. Control voltages U<SP>1</SP>3, U<SP>11</SP>C, dependent on the sign and/or magnitude of the comparison voltage, are derived from the output of the amplifier 30 to energize the magnetic powder brakes 10, 11. When the speed of the load is above a desired value the brake 11 is energized to reduce the speed of shaft 26 so reducing the speed of the planet wheel 18 and restore the speed of the load to the desired valve. Conversely, for a reduction in speed the brake 10 is energized to increase the speed of shaft 27 and increase the speed of planet-wheel 18. In a modification, the intermediate gears 27-29 are replaced by a worm and bevel gearing. In a further modification, the gear-wheel 13 is separately driven and the tacho-generator is driven from the shaft 27. It is stated that the magnitude powder brakes can be replaced by electromechanical or electrohydraulic brakes.
Patent GB-106617-A (GB)
IPC: A47B81/00
Abstract: 106,617. Economy Engineering Co., (Assignees of Pavey, W. B., and French, G. M.). May 19, 1916, [Convention date]. Cask and barrel stands.-A stand or rack for holding tiers of barrels &c. comprises a number of parallel vertical frames A, A<1> having cross-bars A<3>, A<4>, A<5>. The barrels rest on inclined angle-bars B, B<1>, which are slotted to fit over the bars A<3>, A<4>, A<5> and are bolted to chairs B<4>, B<5> riveted or bolted to the bars A<3>, A<4>, A<5>. The rack is stiffened by bars A<6>, A<7>. Movement of the barrels on the rails B, B<1> is limited by pins D with central collars engaging holes in the rails.
Patent GB-591160-A (GB)
Title: Improvements relating to tubular heating furnaces
IPC: C10G9/20
Filed: 1945-04-27
Abstract: 591,160. Furnaces. PETRO-CHEM PROCESS CO., Inc. April 27, 1945, No. 10705. Convention date, April 29, 1944. [Class 51 (i)] A vertical furnace comprises an upright chamber fired at the bottom, a discharge flue at the top and tubular heat-exchange elements arranged about the interior wall, a baffle being provided in the upper part of the chamber and means for introducing a tempering gas between the baffle and the flue. Inverted U-tubes 22 arranged round the refractory wall 11 define a combustion chamber heated by a burner 14 and containing the funnelshaped baffle 21. The tubes 22 carry fins 28, which are coincident with the annular space formed by the baffle. Ports 29 having adjustable closure plates provide for the intake of tempering air between the baffle 21 and the discharge flue 19. In a modification, a truncated conical baffle replaces the funnelshaped baffle 21 and the fins 28 are omitted. The burner 14 may be replaced by a solid fuel grate.
Patent GB-124651-A (GB)
Title: Improved Rat Trap.
Inventor: PARKER BENJAMIN
IPC: A01M23/04
Filed: 1918-06-28
Abstract: 124,651. Parker, B., and Williams, W. F. June 28, 1918. Animal traps.-Relates to self-setting tilting- platform animal traps. The device is mounted in a frame a placed over the mouth of a pit or prison a.', and comprises a platform b supported on a central spindle b<1> and which, when released by the weight of the animal upon a tread plate d, rotates under the stress of a spring c, tipping the animal into the receptacle a<1>. The spring c is coiled round the spindle b<1> and is wound up by means of a crank-handle c<1> formed on the end of the spindle, back motion being prevented by a holding spring c<2>. The trap is held in the set position by engagement of a projection j<2>, on the platform with a lug j<1> on the end of a pendent lever j. The lever j, suspended at g<1> on the upright wall g<2> of the frame a, is counterweighted at k' and is formed with a side arm g, the end of which bears against a projection e on the tread plate d so that, when the tread plate is depressed, the lever g, j is swung to withdraw the lug j<1> and release the platform b. The lever is constrained by a guide k and normally bears against a stoppin j<3>. As shown in Figs. 1 and 2, the tread plate d is flexible and secured in position by screws d<1>. A modification is described comprising a pair of overlapping tread plates secured to the platform at their outer ends. The bait carrier m<1> is supported behind an opening m in the wall g<2> by a wire frame m<2>, legs n being provided to hold it in position.
Patent GB-114251-A (GB)
Title: Feeding Mechanism for Sewing Machines.
Inventor: FAIRWEATHER WALLACE
IPC: D05B29/06
Filed: 1917-07-28
Abstract: 114,251. Fairweather, W., (Singer Manufacturing Co.). July 28, 1917. Sewing-machines; feed by dogs; presser-bars, duplex.-For sewing heavy work such as burlap bags, overalls, and the like, a sewing-machine is provided with a plurality of independent presserfeet arranged tandem fashion and co-operating with an elongated feed-dog which co-acts with the presser-feet throughout its feeding action on the work. The feed-dog 3 is carried by a post 4 slidingly mounted in a yoke member provided on the feed-bar 6, which is suspended between two links 10, 11 pivoted by short shafts 13, 14. The shaft 14 is oscillated by an arm thereon having a sliding connexion with an eccentric on the main-shaft. The rising and falling movements of the feed-dog are effected by a link 30 connecting the post 4 with a lever 29 supported on the shaft 13 and having a pin-and-socket connexion with a second eccentric 24 on the main shaft. The presser-feet 36, 37 are carried by bars 42, 40 which are independently actuated by springs. Collars 46, 49 are adjustably secured to the bars and are adapted to be engaged by a sleeve 44 and a projection 47 thereon for raising the bars. The sleeve is mounted on one of the bars and may be raised bv a treadle-actuated lever 55 or by a hand-lever 50.
Patent GB-1373690-A (GB)
Title: Methods and apparatus for producing electric circuits
IPC: H05K1/00
Filed: 1972-03-08
Abstract: 1373690 Printed circuits ETABS E RAGONOT 8 March 1972 [9 March 1971] 10884/72 Heading H1R A method of manufacturing an electric circuit comprises tracing the configuration of the circuit on a photosensitive layer by projecting a spot or spots of actinic light on to said layer and moving the layer and the spots relative to one another. In one embodiment a cylindrical support 1, Fig. 1, having a metal layer 4, covered by a photosensitive layer 5, deposited on an insulating layer 3, is carried on a device 7. A cylindrical spot applicator 10 holds the ends of fibre optics 9 close to the surface of the photosensitive layer, the other ends of the fibre optics being mounted adjacent an actinic light source, Fig. 2 (not shown). Relative movement between the spots issuing from the fibre optics and the photosensitive layer is provided by a motor 11 which moves the support 1 longitudinally and a motor 12 which rotates the support such that any required pattern may be traced on the photosensitive layer. Standard developing and etching techniques may then be used to produce the conductor patterns. In alternative embodiments flat, prismatic or spherical supports are employed, the shape of the surface of the spot applicator corresponding to the shape of the surface of the photosensitive layer, and the motor 12 producing transverse motion where required. Alternatively, the spot applicator may be moved relative to a fixed support. Multilayer circuits are produced by superimposing insulating layers on the conductor patterns, and conductors may be produced in the bore of tubular supports by mounting the fibre optics to face outwards from the spot applicator.
Patent GB-873324-A (GB)
Title: Rotary cultivating implements
Inventor: BANKS ZBIGNIEW MARIAN
IPC: A01B33/02
Filed: 1959-03-31
Abstract: 873,324. Agricultural implements. BURNDEPT Ltd May 12,1960 [March 31,1959], No. 10897/59. Class 6(1). A hand-guided motordri ven cultivater is provided with cutting blades 6 having serrated edges 7. The cutting blades may be separate from the arms that carry them so that the blades can be replaced or removed for sharpening.
Patent GB-1164682-A (GB)
Title: Improvements in or relating to Transistor Amplifiers for High Frequency
IPC: H03F1/52
Filed: 1967-03-08
Abstract: 1,164,682. Automatic gain control of amplifiers. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. 8 March, 1967 [16 March, 1966], No. 10946/67. Heading H3T. The input signal of a tuned high frequency transistor amplifier is prevented from reaching an excessive level by means of a light sensitive damping device connected across the input circuit and illuminated by light controlled by the input signal. In the radio receiver shown a photo resistor is connected across the primary or secondary of the input transformer 12 or across the input of the frequency changer 15. If the input signal is excessive a lamp 10 controlled by the A.G.C. line reduces the resistance of the photo-resistor and thus the amplitude of the signal. An amplifier may be connected in the A.G.C. line and the photo-resistor may be connected in series with the tuned circuit in which case its resistance must increase when the signal is excessive.