baber/WOPTO huggingface dataset:
Patent GB-687769-A (GB)
Title: Waveform generator, particularly for television
IPC: H04N5/06
Filed: 1948-08-31
Abstract: 687,769. Pulse frequency dividing circuits. HOLLAND, E. O., SMITH, J. B., and PYE, Ltd. Aug. 26, 1949 [Aug. 31, 1948], No. 17493/51. Divided out of 687,712, [Group XL (b)]. Drawings to Specification. Class 40 (vi). [Also in Group XL (b)] In an arrangement for generating television line and frame synchronizing signals, a trigger circuit for the frame-signal generator is fed with master pulses from a generator for controlling the production of line signals and also with pulses from a divider circuit producing pulses at the frame frequency, the arrangement being such that each pulse from the divider circuit conditions the trigger circuit so that the next following master pulse will trigger the frame-signal generator. The timing of the frame signals is thus directly related to that of the line signals and is independent of any delay in the divider circuit. The trigger circuit comprises a resistance-coupled multivibrator arranged for asymmetric operation, master pulses being fed directly (in negative form) to the anode of one valve and the divider pulses (also negatively) to the anode of the other valve. With this arrangement, the multivibrator is held in one condition by the master pulses, is changed to the other condition by a divider pulse and is then changed back to the first condition by the next master pulse. This last change-over produces an output pulse from the second valve and the trailing edge of this pulse triggers the frame generator. Specifications 654,731, 687,712 and 687,713, [both in Group XL (b)], also are referred to.
Patent GB-152416-A (GB)
Title: Improvements in propeller fans
IPC: B63H1/12
Filed: 1919-07-12
Abstract: 152,416. Keith, J., and Tuson, C. July 12, 1919. Screw and like propellers.-In propeller fans of the type having hollow blades for the reception of radial reinforcing and supporting arms, the latter are secured at one end to a disk. Radial arms 3, Figs. 1 and 3, are bolted to a disk 1 and are enclosed by the surfaces 2<a>, 2<b> of the blades 2. The edges of the plates 2<d> 2<c> are joined by welding and the arms 3 are welded or riveted to them.
Patent GB-681894-A (GB)
Title: Improvements in or relating to power driven scythes
Inventor: CAUDWELL PHILIP GORDON
IPC: A01D34/28
Filed: 1951-07-25
Abstract: 681,894. Mowing machines. ALLEN & SONS (OXFORD), Ltd., J. July 25, 1951, No. 17614/51. Class 6(iii) A power driven scythe of the kind comprising a motor driven reciprocable cutting mechanism mounted on a twowheeled chassis is characterized in that the cutting mechanism is secured to a i inge bar 36 pivotally mounted on an adjuster plate 25 angularly adjustable with respect to a mounting plate 22 secured thereto. As shown the adjuster plate 25 is provided with ribs 28, 29 which engage in shallow grooves in the plate 22 and which allow the adjuster plate 25 to be tilted, the plate being fixed in any adjusted position by means of bolts 26, 27. The hinge bar 36 is secured to the adjuster plate by means of a pin 38 which engages in a tube 39 mounted on the adjuster plate 25, the pin being retained in position by means of a spring 40, washer 41 and split pin 42. The hinge bar 36 may rotate about the pin 38, the degree of rotation being limited by stops 44, 45 on the adjuster plate 25 which engage the upper surface of the finger bar 18 of the cutting mechanism.
Patent GB-1068001-A (GB)
Title: Door latch mechanisms
IPC: E05B85/24
Filed: 1965-04-27
Abstract: 1,068,001. Door latches. FORD MOTOR CO. Ltd. April 27, 1965 [Sept. 15, 1964], No. 17614/65. Heading E2A. A door latch mechanism comprises a pivoted detent spring biased to hold the latch in a latching position, a pivoted link pivotable by both a first and second latch release member about a pivot to release the detent from engagement with the latch and thus unlatch the latch, the first latch release member including a link movable by both a first and a second locking member into a second position so that pivoted movement of the link by the release mamiber does not release the detent. The door latch comprises two cooperating pivoting latch jaws 15 spring biassed to unlatching position and retained in latching position with a sinker pin of elliptical cross section by two meshing toothed plates 21, 22 pivoting on the same pivots as the latches. One plate 21 is spring biassed to latch disengaging position in an anticlockwise direction. The latches are held engaged by a spring urged detent 34 a projection on which engages a tooth 32 on a plate 22. The detent is released by pressing a push button on an outside handle 63 which pivots a lever 45 connected to a link 46 which has a flange 58 which engages a projection 57 on the detent. An inside handle operates a bell crank lever also to disengage the detent 34. The link 46 is moved downwardly and rendered inoperative either by a key operated lock or by pressing a knob 87 on either side of the door they being connected to opposite ends of a lever 72 having a slot 75 in which stud 54 of link 46 moves. If the link is in inoperative position and the door is closed the end of the detent engages the link flange 58 to move the link upwardly to actuating position. The link may be retained in inoperative position by pressing the push button as the door is closed and locked.
Patent GB-1346855-A (GB)
Title: Photographic camera
IPC: G03B17/42
Filed: 1971-05-27
Abstract: 1346855 Film transport EASTMAN KODAK CO 27 May 1971 [4 June 1970] 17635/71 Heading G2A The invention is concerned with a mechanism for sensing an indicator perforation in a film strip, which mechanism then terminates the film transport. The sensing member 6 is biased towards the film strip 5 by a spring 7, and lies against the surface of the film until it can enter a perforation 5a. Member 6 has inclined surfaces 6e, 6f which bear against similarly inclined guiding surfaces 9b, 9c of the camera housing 9, so that member 6 does not move normally to the film but at an angle thereto (direction A). A spring-loaded release lock 8 is pivotally mounted on member 6 by a pin 12. A plate 13 is attached to the housing, and carries a drive lever 3 mounted on it by means of a pivot 16. A lever 1 pivots in the direction C to wind on the film, and at the same time actuates a slide member 2 in the direction G to set the shutter. In the Fig. 1 position the film transport is unlocked, sensing member 6 is withdrawn from perforation 5a, and the shutter release 4 is still in its depressed position. When the spring-loaded member 4 is allowed to move upwards again, a step 8b of lock 8 moves under it, so preventing any further actuation of release 4. When the film is wound on by lever 1, lever 3 is pivoted anti-clockwise by slide 2 from the Fig. 1 position to the Fig. 2 position, in which one arm engages behind a hook 4a of release 4 and retains it. At the same time lever disengages from member 6, so allowing it to move towards the film, and hence the step 8b is disengaged from under release 4 owing to the oblique movement of member 6. As member 6 enters a film perforation, a tooth 6b comes into engagement with ratchet teeth 1a on lever 1, so locking it against further movement. When release member 4 is depressed to actuate the shutter blade 10, a bevelled portion 4b of member 4 engages lock 8, and hence member 6 is withdrawn from perforation 5a, tooth 6b at the same time disengaging from ratchet 1a. Hook 4a releases drive lever 3, which is spring-driven back to its Fig. 1 position.
Patent GB-1527055-A (GB)
Title: Putting practice device
IPC: A63B69/36
Filed: 1977-07-22
Abstract: 1527055 Putting practice device H B BRICE 22 July 1977 [30 April 1976 25 Aug 1976] 17696/76 and 35313/76 Heading A6D A golf putting practice device detects and indicates whether, at impact with a golf ball, the angle of the putter striking surface to the intended direction of putt is within the range 90t, wherein the device has means for adjusting the value of t depending upon the length of putt being simulated. The ball is placed between headed pins 10A, 10B which are carried by rotatable elements 1 and 4. Rotary motion of elements 1, 4 causes movement of elements 2, 3 through lost motion connections 16A, 16B. Rotary motion of the elements operates switches (not shown). If both the switches associated with elements 1, 4 operate before the switch associated jointly with elements 2, 3 then the alignment of the club head must have been within the permitted tolerance. The device may also determine the time for the ball to travel a certain distance and give an indication of how closely matched to the simulated putt length was the strength of shot.
Patent GB-999079-A (GB)
Title: Heat insulation means for attachment to a window frame
IPC: E06B9/58
Filed: 1963-05-04
Abstract: 999,079. Roller blinds. R. A. SIDNEY. May 29, 1964 [May 4, 1963; Oct. 17, 1963], Nos. 17722/63 and 41028/63. Heading A4B A roller blind forming heat insulating means for a window comprises a sheet 1 of plastic wound on a roller 2 mounted in a casing 3 having a slot 4 through which the leading edge of the sheet is passed, guide members 12 attached to the window frame embracing the edges of the sheet and the leading edge of the sheet 1 carrying a stiffning member 18 with a sealing strip 21 and being securable to the window frame by plungers 24 engaging sockets 25. The slot 4 has felt strips 5 to form a seal and the guide members 12 are of rubber or plastic and form a seal with the sheet.
Patent GB-569242-A (GB)
Title: Improvements in or relating to abrasive wheels
IPC: B24D7/02
Filed: 1943-10-27
Abstract: 569,242. Grinding-wheels. TITAN ABRASIVES CO. Oct. 27, 1943, No. 17734. Convention date, Jan. 9. [Class 60] In an abrasive wheel comprising a moulded abrasive part 11 secured to a metal backing 10, the means for securing the part 11 to the backing 10 comprises metal cups 12, which may be flexible, each with a flaring flange 12a and embedded in the wheel 11, a nut 13 also being embedded in the wheel - within the disc ; bolts 14 pass through holes in the backing 10 and the discs 12 to secure the parts together. In a modification, in place of the nut 13, the head of a stud is embedded in the wheel, the stud itself projecting from the wheel. In a further modification, the flange 12a of the disc is corrugated.
Patent GB-340921-A (GB)
Title: Improvements in rock drilling machines
IPC: B25D9/24
Filed: 1930-06-07
Abstract: 340,921. Percussive rock drills. AKTIEBOLAGET ATLAS DIESEL, Stockholm. June 7, 1930, No. 17739. Convention date, June 14, 1929. [Class 124.] In a rock drill wherein the bit is rotated by a grooved rod ending with a turning-head co-operating with a ratchet mechanism, the distributing- valve comprises an oscillating disc with a flat, front face and a double-tapered back which faces engage a double-tapered, front seat and a flat, back surface respectively. The pistonrotating rod 3 has a turning- head 5 mounted in a cylinder block 4 and co-operates with ratchet mechanism therein. The valve 13 is mounted behind a plate 7 connected by ports with the opposite ends of the cylinder, and around a projection 15 on the cover 14. The plate 7 has inclined seats 71, 72 engaged by a flat seat on the valve. The valve has inclined back surfaces which engage a plane seat on the cover. The fall of pressure on opening the exhaust port 16 by the piston 2 effects the valve reversal. A large pressure chamber 17 may be arranged behind the valve.
Patent GB-880556-A (GB)
Title: Polyurethane compositions and method of making same
IPC: C08G18/76
Filed: 1958-06-04
Abstract: A method of making a curable polyurethane composition comprises reacting a polyol which is an hydroxy terminated polyether or polyester having a molecular weight of up to 4000 with a mixture of organic isocyanates each of which has only two reactive isocyanate groups, the proportion of reactants being such that for one mole of polyether or polyester, a total of from 0,95 to 1,5 moles of isocyanate is employed of which the minor molar proportion is constituted by a 2, 3, 5, 6-substituted p-phenylene diisocyanate in which the substituents are selected from alkyl, alkoxy and dialkylamino groups in which the alkyl radicals have up to 5 carbon atoms and of which the major molar proportion is constituted by another isocyanate or isocyanates.  Preferably for each mole of polyol there is employed at least 0,02 mole of the 2, 3, 5, 6-substituted p-phenylene diisocyanate and from 0,80 to 0.99 mole of the other isocyanate or isocyanates.  In one method the polyether or polyester is reacted with the other isocyanate only, to form an initial polymer, after which the 2, 3, 5, 6-substituted diisocyanate is added to the reaction mixture.  The invention also comprises the products obtained by curing the curable compositions.  Preferred curing agents are peroxides of the formula R-O-O-R1 wherein R and R1 are organic radicals of which at least one has two or more carbon atoms, as described in Specification 828,718.  Carbon black is a preferred compounding agent, although clay, silica or calcium carbonate can be substituted for all or part of it.  A preferred polyol is a polyester obtained from adipic, isosebacic or isophthalic acids and a butylene or polybutylene -1, 4 glycol (above 30 mole per cent), along with another glycol.  Polyethers are also suitable. The polyol may contain nitrogen and/or unsaturation in the chain and may also have some -NH2 groups.  The molecular weight should preferably be above 500 to give rubbery products.  Rigid products result from polyols of lower molecular weight or by using a cross-linking agent such as trimethylol propane, glycerol or pentaerythritol.  Toluene-, diphenylmethane, naphthalene -1, 5, bitolylene, dianisidine m- or p-phenylene, m-xylylene, diphenyl and hexamethylene diisocyanates are specified as the isocyanates used in major proportion.  In Example (1) a reaction product of polytetramethylene ether glycol and 2, 4-tolylene diisocyanite is cured by masticating with durene diisocyanate and also (for comparison) with 4-tertiary butyl 2, 6-tolylene diisocyanate, m, m1-dimethyl, p, p1-diisocyanate diphenyl methane, and polyaryl polyisocyanate.  In further examples a poly (ethylene-propylene) adipate is employed as the polyol in reaction with mixtures of durene diisocyanate with others of the specified isocyanates and also, for comparison, with durene diisocyanate alone. The products are compounded with carbon black and dusting agent and cured.  In one case dicumyl peroxide was added as curing agent. Reference has been directed to the Comptroller to Specification 779,806.
Patent GB-893440-A (GB)
Title: Improvements in bleaching processes and compositions
IPC: D06L4/13
Filed: 1959-05-26
Abstract: Synthetic textile fibres discoloured by use are bleached by treating them with an aqueous solution having a pH of 5-8.5 containing chloride ions in combination with monopersulphate ions, the monopersulphate being present in a concentration giving 20-1,200 parts of active oxygen per million of solution and the gram-ion ratio of chloride ions to monopersulphate ion being 0.5-10 gram-ions of chloride to one gram-ion of monopersulphate ion.  The source of chloride ions may be an alkali or alkaline-earth metal chloride and the source of monopersulphate ions may be an alkali or alkaline-earth metal monopersulphate, preferably "oxane", a mixture of KHSO5, KHSO4 and K2SO4 in mole proportions of 2 : 1 : 1.  The bleaching solution may also contain alkaline salts, e.g. sodium carbonate, sodium tripoly phosphate, pyrophosphates and other buffer salts, but preferably a mixture comprising, for each part by weight of "oxane", about 0.6-1.2 parts by weight of potassium carbonate and about 0.3-0.6 parts by weight of sodium dihydrogen phosphate, or boric acid, citric acid or Na2H2P2O7 in equivalent amounts, the mixture supplying 0.008-0.016 parts by weight of hydrogen ion.  Fluorescent brightening agents, carboxymethyl cellulose alkali metal salts and detergents may also be present.  Specified fibres are nylon, polyethylene terephthalate and polyacrylonitrile and mixtures thereof with cotton.  Solid bleaching compositions, suitable for bleaching discoloured synthetic fibres, comprising an alkali or alkaline-earth metal monopersulphate, an alkali or alkaline earth metal chloride and a buffer adapted to maintain a pH of 5-8.5 when the composition is dissolved in water to give a concentration of active oxygen of 20-1,200 parts per million, are also described.  Specifications 428,142, 428,148 and 893,439 are referred to.
Patent GB-703389-A (GB)
Title: Improvements in or relating to ultrasonic inspection devices
IPC: G01N29/30
Filed: 1952-07-17
Abstract: 703,389. Ultrasonic couplings. SPERRY PRODUCTS, Inc. July 17, 1952 [July 26, 1951], No. 18095/52. Class 40 (4) [Also in Group XXXVIII] In an ultrasonic pulse-echo testing system (see Group XXXVIII) an electro-mechanical transducer 23 is coupled to the work piece 11 by an intermediate prism 10 such that an ultrasonic beam is transmitted through the work piece in a direction 21 making an acute angle with the surface 15 and the coupling efficiency between the prism and the work piece is tested by a second transducer 50 which transmits a beam 60 into the work piece at right angles to the surface 15.
Patent GB-1062247-A (GB)
Title: Long lifetime nuclear reactor
IPC: G21C7/00
Filed: 1965-04-30
Abstract: 1,062,247. Nuclear reactors. UNITED STATES ATOMIC ENERGY COMMISSION. April 30, 1965 [June 26, 1964], No. 18194/65. Heading G6C. In a nuclear reactor having a core comprising a seed region of fissile fuel and a blanket region of fertile fuel, the mass ratio of fissile material to fissile and fertile material is from 0À025: 1 to 0À1: 1, the thickness of the fissile material is 2 to 20 cms., and the fissile and fertile material are so disposed that the ratio of peak to average blanket burn-up is less than 2À5: 1. The fissile material may be highly enriched U235 and the blanket material thorium 232, natural uranium, or uranium depleted to 0À22% U235. Graphs are provided relating fuel ratios, seed thicknesses, excess reactivities, and lifetimes. From these graphs, fuel ratios and thicknesses of fissile material may be selected for a given control capacity of the reactor so as to obtain a long lifetime for the reactor. Core arrangements, Figs. 8-10 (not shown) are made up of square, circular, or annular cross-section seed elements each surrounded by fertile material. Disposed within each seed element is a control rod of cruciform or circular segmented crosssection.
Patent GB-841306-A (GB)
Title: Improvements in or relating to electrical apparatus for determining the fundamental frequency of a complex wave
IPC: G10L25/90
Filed: 1957-06-07
Abstract: 841,306. Determination of voice pitch frequency. WESTERN ELECTRIC CO. Inc. June 7, 1957 [June 13, 1956], No. 18219/57. Class 40 (4). [Also in Group XL (c)] The pitch frequency of the function g(t) of voice currents of the form g(t) sin (#t+#), where # is the formant frequency, is obtained by forming an auxiliary current g(t) cos (#t+#), squaring and adding these two currents to obtain {g(t)}<SP>2</SP> whose frequency is then obtained by known methods. As shown, the voice currents are passed via a band-pass filter 2, and an equalizer 3 to networks N 1 , N 2  which produce outputs which differ in phase by 90 degrees but are otherwise identical. These are squared at 11 and 12 respectively and added at 13 to produce the required output {g(t)}<SP>2</SP>. This may be passed to a square-rooter 14 to produce an output g(t) whose frequency is then obtained. Since, however, g(t) is always positive its peaks and those of {g(t)}<SP>2</SP> always coincide so that it is sufficient to measure the frequency of occurrence of the peaks of this latter function. The function g(t) or {g(t)}<SP>2</SP> may thus be fed to a circuit 15 comprising a low-pass filter 21 (0-250 c.p.s.) followed by a counting-device 23 which produces an output via low-pass filter 24 (0-25 c.p.s.) to lead 17 as a measure of the pitch frequency. Alternatively or in combination with the above circuit 15 a circuit 16 may be provided for giving a pulse output on lead 18 at the beginning of each fundamental pitch period. This circuit may comprise a succession of circuits each comprising a shaping network 31 (or 34) emphasizing low frequencies and a detector 32 (or 35). The networks N 1 , N 2  may be of any suitable type provided they introduce a 90 degree phase difference between their outputs and provided they have otherwise the same phase - frequency and amplitude - frequency characteristics. Correction for these latter may then be effected by the single equalizer 3 in the input circuit. The circuit may be used in a vocoder system of the type described in Specification 466,327.
Patent GB-1260508-A (GB)
Title: Press plate unit for a filter press
Inventor: KLICK HEINZ
IPC: B01D25/21
Filed: 1969-04-09
Abstract: 1,260,508. Filter press. SANDOZ Ltd. 9 April, 1969 [30 May, 1968], No. 18251/69. Heading B1D. A filter press comprises an array of units as shown, each comprising a metal plate 1 with a peripheral plastics channel 4 to Which are secured externally ribbed elastic membranes 2, the whole being enclosed by a peripheral frame 5, and respective filter cloths (not shown) covering the ribbed faces of membranes 2. Suspension is pumped into the spaces between the cloths of adjacent units, and subsequently the resulting filter cakes are squeezed by forcing compressed air into chambers 3, expanding the membranes away from plate 1 to force adjacent cloths together. Fig. 2 (not shown) illustrates the air inlet.
Patent GB-789282-A (GB)
Title: Improvements in or relating to door latch mechanisms
IPC: E05B65/34
Filed: 1956-06-13
Abstract: 789,282. Striking plates for latches. FORD MOTOR CO., Ltd. June 13, 1956 [June 13, 1955], No. 18278/56. Class 44 A door latch mechanism for latching a motor vehicle door to a vehicle body comprises a latch member 28 adapted to be carried by the vehicle door, a keeper member 14 adapted to be carried by the vehicle body, the latch member 28 and the keeper member 14 having toothed elements 27, 18 which interengage when the vehicle door is closed, and a part carried by one of the members overlapping a tooth on the other of the members when the door is closed to limit relative movement between the latch and keeper members in a direction longitudinally of the vehicle. As shown, the overlapping part is constituted by a flange 33 integrally formed at the outer side of the member 28 and projects into a clearance space 19 between the teeth 18 and a body pillar 22. A nylon wedge 16, slidably carried by the keeper member 14 engages a sheet metal dovetail 23 secured to the vehicle door.