baber/WOPTO huggingface dataset:
Patent GB-959284-A (GB)
Title: Improvements in and relating to view finders for photographic cameras
IPC: G02B23/14
Filed: 1960-06-10
Abstract: 959,284. Albada finders for cameras. VOIGTLANDER A.G. June 10,1960 [June 10, 1959],No. 20615/60. Headings G2A and G2J. In an Albada viewfinder for a photographic camera, having its semi-transparent concave mirror carried on a lens element of the front member and separated from the carrier for the field-bounding frame by an air gap, and having provision for forming within the finder field an image of a part or parts in the camera, for example of an exposure meter pointer, an inclined reflector is carried on the side of the front member on a surface of a block of glass or transparent synthetic material which constitutes or is part of that member to receive light rays from the said part or parts when the finder is positioned in the camera, to re-direct the rays into the finder and to co-operate with a positive lens in the finder optical system so that the observer's eye sees an image of the said part or parts, substantially at infinity, within the total field of the finder. 'As shown (Fig. 3), an Albada finder comprises a front transparent lens 30 carrying a concave semireflecting mirror 32, and a rear transparent lens 31 carrying frame marks 33 which are imaged by the mirror 32 and the lens 31 at infinity. Rays from a pointer 40 or the like are reflected into the finder by means of a reflecting surface 41 and are imaged at infinity in the finder field by the combined action of lens element 39 and lens 31. In a modification (Fig. 4 not shown), the lens element is formed separately from the lens 30 and later cemented thereto. In a modification (Fig. 5), the front lens 60 is a combination of two lenses 61, 62 cemented together, and said lens element is formed by a lateral portion 63 of the lens 61. In a modification (Fig. 2 not shown), the reflecting surface 41 is formed on a lateral extension of the front lens, no lens element is provided, and the pointer is imaged at infinity by the action of lens 31 above. The invention may also be applied to Albada Finders having 1: 1 magnification as in Fig. 1 (not shown). Specification 958,029 is referred to.
Patent GB-863908-A (GB)
Title: Improvements in or relating to separators for separating water and gas from oil
IPC: C10G33/06
Filed: 1958-06-27
Abstract: <PICT:0863908/III/1> An apparatus for separating water and gas from oil comprises a gas separating chamber, optionally a free water knock out chamber, and a plurality of water and gas separating chambers, each of said chambers being separated from the others by fixed baffles (11, 12, 12a); an inlet (14) and a mist extractor (25) are provided in the gas separating chamber together with an outlet (26) to the bottom of the subsequent chamber; the water and gas separating chambers are provided with at least one horizontal filter (15) and heating means (20) and the gas is passed from one of said chambers or the free water knock out chamber by means of a conduit to said gas separating chamber; the baffles (12, 12a) are vented (by means of cut-out portions 16, 18) to permit the transfer of gas, conduits are provided to pass the oil from the top of each water and gas separating chamber to the bottom of the subsequent chamber and the oil product is removed from an outlet (28) in the last of the water and gas separating chambers.  Where a free water knock out chamber is present, this is provided with separate heating means (41) and the flow therethrough is similar to that in the water and gas separating chambers.  The numerals relate to the illustrated embodiment in which all the chambers are contained in a single pressure vessel and the gas separation chamber overlies the remaining chambers.  The heating means comprise U-tubes 20 and 41 to which a hot fluid or burning gas or oil may be supplied but electrical heating may be used.  The final oil product is withdrawn at 28, and water is removed at 29 and 40, the baffles 12 having cut out portions 30, 31 to make a single removal pipe for the water and gas separating chambers possible.  The filters 15 may comprise filter plates packed with a fibrous material such as wood shavings.
Patent GB-984283-A (GB)
Title: Improvements in or relating to central buffer couplings for rail vehicles
IPC: B61G3/18
Filed: 1961-06-07
Abstract: 984,283. Railway vehicle automatic couplings. J. VIELMETTER. June 7, 1961 [June 8, 1960], No. 20643/61. Heading B7T. A Willison type coupler has its sliding locking member 3 connected to the housing 1 by a lever 9 which is pivoted at 11 to the housing and at 7 to the lock, the lever carrying an arm 13 which protrudes through a hole 15 to act as an indicator when the lock is retracted. The lock may be held in the retracted position by engagement of a pin (not shown) with the hook of the protruding arm.
Patent GB-202638-A (GB)
Title: Improvements in locomotives and similar vehicles provided with condensers
IPC: F28B5/00
Filed: 1923-08-15
Abstract: 202,638. Aktiebolaget Ljungstr÷ms Angturbin. Aug. 17, 1922, [Convention date]. Railway locomotives, steam, of articulated construction.-A locomotive has separate vehicles 1, 2 for the boiler 3 and condenser 6, the driving machinery such as the turbine 9 being carried partly or entirely on vehicle 2, while vehicle 1 carries a tank 20 with reserve water. This tank is connected by a pipe 18 and a resilient or articulated coupling with a tank 7 through a valve 16 and float 17 so as to maintain a constant water level in the tank and so ensure a constant tractive effort. A steam conduit 13 with a resilient bent part or an articulated coupling leads to the turbine 9 which exhausts into a condenser 21 or the tank 7, the water from which is forced by a pump 23 into the cooler 6. The bunker 5 is carried by vehicle 1.
Patent GB-905266-A (GB)
Title: Pulse counting circuits
IPC: H03K23/00
Filed: 1960-06-14
Abstract: 905,266. Control of D.C. motors. WESTING- HOUSE ELECTRIC CORPORATION. June 14, 1960 [June 19, 1959], No. 20790/60. Class 38 (3). [Also in Group XL (c)] Pulses E, e.g. arising in a synchronous motor control system of the type described in Specification 905,267 are applied to the input 10 of an amplifier circuit 2, having a transistor 12, where they are amplified to drive the base of a power transistor 112 in an integrating circuit 4 which also includes a negative temperature coefficient thermistor 128 and a negative voltage source Es. Each time a pulse E occurs, transistor 112 becomes conductive and current pulses W flow through the thermistor 128 which is connected to ground 9 in series with the transistor 112 and a resistor 126; the thermistor thereby heats up and its resistance decreases, this resistance change being detected by a sensing circuit 6 which provides an output signal Z at an output terminal 226. The circuit 6 comprises a Zener diode 200 poled to oppose current flow from the circuit 6 to the circuit 4, a transistor 212 having a base connected to the Zener diode 200 through an impedance 216 and to a positive bias source through a resistor 218, the emitter 224 being grounded at 9 and the collector 220 being negatively biased through a resistor 222. As the thermistor resistance decreases, the voltage from junction X to ground 9 when transistor 112 is conducting will become less than the Zener diode breakdown voltage. The positive bias through resistor 218 drives transistor 212 to cut-off and a negative voltage appears at the output terminal 226. The output voltage Z thus consists of negative pulses occurring when the transistor 112 is conducting. The average value of the current through the thermistor is maintained constant by a regulating circuit 8 which has a transistor 312 responsive to the difference in magnitude between the voltage across resistor 126 and a reference voltage established by a Zener diode 302 to control the reception of the input pulses into the circuit 2.
Patent GB-1039466-A (GB)
Title: Overfilling safety device for tanks
IPC: F16K31/24
Filed: 1963-05-24
Abstract: 1,039,466. Valves. G. FRITZ. May 24, 1963 [June 5, 1962; Jan. 8, 1963], No. 20799/63. Heading F2V. In an inlet cut-off device for a tank, the closing force is obtained from an energy storage device, e.g. a spring, which is released by a float operated detent. Butterfly valve 3 is retained in the closed position against shoulders 4 and 5 of seat ring member 6 by spring 19 acting through a toggle linkage pivoted at 23 to the casing and at 16 to a cam segment 14 integral with the valve 3. In the valve closed position, the segment 14 engages within a recess 28 of a control disc 24 and, when the valve is opened by lever 12, the disc 24 is rotated under the action of a falling float 27, within the recess 15 of segment 14. The segment 14 has steps 34 and 35 within the flank of the recess 15 which flank presses against the face of disc 24 so that, as the float rises to rotate the disc 24, the release of the segment 14 from engagement therewith, through disc opening 28, is permitted stepwise. The inlet tube 1 may be fitted with either a laterally directed outlet (Fig. 4, not shown) or an outlet extending near to the tank bottom (Fig. 5, not shown). The spring 19 may also be actuated by a foot-operated lever, which preferably simultaneously also opens the valve, or by a separate float.
Patent GB-423360-A (GB)
Title: Improvements in and relating to means for use in storing, conveying, and dispensing beverages
IPC: B67D1/12
Filed: 1933-07-24
Abstract: 423,360. Valves. BARNES, F. J. T., 184, Breakfast Creek Road, Newstead, Brisbane, Australia. July 24, 1933, No. 20841. [Class 135] [See also Groups XVII and XVIII] In an apparatus for storing, conveying, and dispensing liquids such as fruit juices, wine, beer, &c., either still or carbonated, means for withdrawing the contents comprise a head 19, Fig. 3, screwed into the plug 8 which contains a valve 21 perforated at 21c. A key 25 passes through a gland at the top of the head 19 and has a recess to engage a rib 21a on the valve, whereby the valve can be unscrewed to free the openings 21. In a modified form the end of valve 21 may project into tube 18. Specification 397,257 is referred to.
Patent GB-532319-A (GB)
Title: Improvements in or relating to compositions containing luminescent pigments
IPC: C09D5/22
Filed: 1939-07-18
Abstract: 532,319. Synthetic resin compositions comprising wetting and luminescent agents. HETHERINGTON, A. C., LOBB, G. W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 18, 1939, No. 20879. [Class 15 (ii)] [Also in Group XL] In the production of compositions including luminescent pigments, particularly of the zinc sulphide or zinc-cadmium sulphide type, an alkaline wetting agent is added to the dispersion medium for the pigments for the purpose of reducing blackening and loss of luminescence as the result of exposure to the atmosphere and light. The dispersion medium may consist of solutions or dispersions of synthetic resins such as vinyl, acrylate and urea-formaldehyde resins, shellac, chlorinated rubber and cellulose derivatives, together with plasticizers and solvents. The wetting agents include turkey red oil, triethanolamine, alkaline soaps of fatty acids and all alkaline substances known to decrease the surface tension between solids and aqueous liquids. One example comprises zinc sulphide phosphor butyl methacrylate resin, xylol and triethanolamine. Another example comprises zinc-cadmium sulphide phosphor, methyl acrylate resin, xylol, methyl ethyl ketone, turkey red oil and 10 per cent ammonia solution.
Patent GB-741452-A (GB)
Title: Electrical gating circuits
Inventor: PRITCHARD RONALD
IPC: H03K17/52
Filed: 1953-07-28
Abstract: 741,452. Gating circuits. NATIONAL CASH REGISTER CO., Ltd. March 9, 1954 [July 28, 1953], No. 20901/53. Class 40 (6). An electronic gate comprises a plurality of signal input circuits, an inhibiting input circuit and an output circuit so that when pulses of the same polarity are applied simultaneously to all of the inputs no output is produced from the gate. The Figure shows a gate comprising coldcathode gas discharge tubes 1, 2 in which inputs comprising positive-going pulses are applied at V2 and V5 to the commoned anodes and to the trigger electrode of tube 1 respectively. A positive-going inhibiting pulse is applied simultaneously to the trigger electrode of tube 2. If a pulse on V2 coincides with a pulse at V3, tube 1 discharges and a positive pulse is produced at its cathode output V6. Resistors 9 and 11 are such that tube 2 fires at lower voltages than tube 1 so that when pulses are applied simultaneously at V2, V3 and V4, tube 2 alone fires and no output pulse is obtained at V6. Thus the pulses at V4 act as inhibiting pulses to prevent the coincidence of pulses at V2 and V3 producing an output pulse at V6.
Patent GB-595073-A (GB)
Title: Improvements in or relating to apparatus for producing electric oscillations
IPC: H03K12/00
Filed: 1944-10-26
Abstract: 595,073. Saw-tooth generators. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 26, 1944, No. 20910. Convention date, July 28, 1943. [Class 40 (iii)] [Also in Group XXXV] To produce a suitable waveform for the deflection plates of a cathode-ray tube, a sine wave is fully rectified in such a manner as will give a train of unidirectional pulses of suitable shape, which pulses are applied to a differentiating network from which is derived a voltage varying substantially as the first derivative of the pulse waveform. A voltage of waveform A impressed across terminals 16 is rectified by a normal circuit comprising transformer 10 and full wave rectifying tube 22, whereby a train B of unidirectional voltage pulses results across a resistance 26. The effect of the differentiating network comprising a capacitor 28 and a resistance 30 is that voltage wave C having the form of a series of half sine waves appears across terminals 32, 34. Alternatively, the pulses may be made parabolic when the differentiated voltage varies linearly, the waveform then comprising a series of straight lines, Fig. 4 (not shown). Such a pulse shape may be produced by making resistance 26 of a material, the resistance of which decreases with an increase of the applied potential, e.g. one of those sold under the Registered Trade Mark "Thyrite," Fig. 3 (not shown), or by using a load resistance of sufficiently low value to alter the internal impedance of tube 20, or by reducing the tube heater voltage and thereby the maximum emission, Fig. 5 (not shown).
Patent GB-859831-A (GB)
Title: Improvements in or relating to clothes presses having pneumatically operated steam valves
IPC: D06F71/34
Filed: 1957-07-03
Abstract: 859,831. Garment presses. JOHNSONPRODUKTER I OREBRO A.B. July 3, 1957 [April 11, 1957], No. 21031/57. Class 138(2). A clothes press comprises a lower pressing member, an upper pressing member which can be raised from and lowered against the lower member by power controlled by the operator, means for ejecting steam when the members are together, and a pneumatic control actuated by the press operators body (e.g. by the hip) to allow the ejection of steam from the upper member when it is in the raised position, the release of said control stopping the supply of steam. This control is so disposed that the operator must stand to one side relative to the area of ejection of steam. As shown, the depression of push-button 10 by the operator's body causes the ejection of steam from upper pressing member 5 when the press is open, a pneumatic system linking the button with a steam valve in the member. The normal operation of the press is controlled by pedals 7, 7<SP>1</SP> and 7<SP>11</SP>.
Patent GB-708841-A (GB)
Title: Improvements in or relating to television transmitting apparatus
Inventor: THEILE RICHARD
IPC: H04N3/40
Filed: 1951-09-06
Abstract: 708,841. Television. PYE, Ltd. Sept. 8, 1952 [Sept. 6, 1951], No. 21083/51. Class 40 (3). [Also in Group XXXV] In television transmitting apparatus of the type described in Specification 656,069 in which scanning of the target 8 of an image iconoscope is effected by a flying spot scanner 1 scanning the same area of the photo-cathode 6 as that on which the image 16 or 20 is projected, means are provided for compensating the spurious signals in the tube output due to variations in intensity of the scanning light spot. As shown, signals proportional to the variations are derived from the photo-cathode current by means of resistor 30 and applied through an amplifier and phase reverser 32 to a mixer 33 where they are combined with the tube output signal with such amplitude and phase as to cancel out the variations. In another embodiment, Fig. 2 (not shown), amplifier 32 and mixer 33 are dispensed with and the signals are derived by a transformer connected in the lead to the photocathode and applied directly to the tube output resistor 12. In yet another embodiment, Fig. 3 (not shown), signals proportional to the variations are derived by means of one or more photo-cells viewing the screen of tube 1. As an alternative or an addition to the above converting means, a negative feedback arrangement (see Group XXXV), may be employed to stabilize the intensity of the scanning light spot. In one arrangement, Fig. 4 (not shown), this is carried out by a photo-cell viewing the screen of tube 1 and applying converting signals through an amplifier to the tube grid. In another arrangement the converting signals are obtained from the output of amplifier 14.
Patent GB-1036874-A (GB)
Title: Vulcanized elastomers
Inventor: BLANCHARD ALLAN FREDERICK
IPC: C08L19/00
Filed: 1962-06-01
Abstract: Vulcanized elastomers are prepared by heating a synthetic rubber polymer, having groups which under the vulcanization conditions employed are hydrolysable to carboxylic acid groups, with a sulphur curative or an organic peroxide and with an oxide or hydroxide of an alkaline earth metal or lead monoxide in the presence of a neutral or basic organic hydroxy compound.  The rubber polymer may be a copolymer of butadiene and styrene together with an alkyl or aralkyl ester of an a ,b -ethylenically unsaturated carboxylic acid, e.g. an alkyl sorbate or acrylate (including cyanoalkyl acrylates) or methacrylate, or an itaconate; minor proportions of maleate and fumarate esters may also be present; terpolymers of acrylonitrile with butadiene and an ester such as methyl acrylate may also be used. Curing agents specified are dicumyl peroxide and a mixture of sulphur and N-cyclohexyl-2-benzthiazyl sulphenamide.  The oxides and hydroxides used are CaO, Ca(OH)2, MgO and PbO; ZnO may additionally be present.  The preferred hydroxy compound is glycerol; others mentioned are ethylene glycol, diethylene glycol, 1,2- and 1,3-propylene glycols, 1,4- and 2,3-butylene glycols, 2,4-hexylene glycol, sucrose and starch.  Optional ingredients which may be present during vulcanization include reinforcing fillers, e.g. carbon black, extending oils, other polymers, processing aids such as stearic acid and mineral oil, and antioxidants, e.g. phenyl-b -naphthylamine, N,N1-diphenyl phenylenediamine, p,p1-dimethoxydiphenylamine, isopropylaminodiphenylamine and 6-ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline. Examples illustrate the vulcanization of butadiene-styrene-methyl acrylate and butadiene-methyl methacrylate copolymers.
Patent GB-1300329-A (GB)
Title: Anti skid device for vehicles
IPC: B60T8/74
Filed: 1970-05-04
Abstract: 1300329 Antiskid systems WESTING- HOUSE BREMSEN-UND APPARATEBAU GmbH 4 May 1970 [10 May 1969] 21267/70 Heading F2F In an antiskid vehicle brake system in which a sensor responsive to rotational deceleration of the vehicle wheels at least partially releases the vehicle brakes when the sensor indicates the approach of wheel lock; the action of the sensor is delayed in accordance with the rate at which the vehicle brakes are actuated. As described the sensor comprises an inertia mass 53 rotatable relative to a vehicle wheel 46 in opposition to the bias of a spring 50. When the brakes are applied, bracking pressure charger wheel brake cylinder 9 and reaches a cylinder 19 via a branch pipe 18 to charge a two-stage piston 24 and build up a pressure in a pipe 44 which displaces a hollow piston 48 in a cylinder 47 to impart a bias to the spring 50. In addition the braking pressure acts on a piston 34 of a tandem cylinder 30 in dependence on the speed with which brake pedal 2 is actuated so that with a high actuating speed piston 34 moves a control piston 36 at such speed that the pressure fluid, due to the throttling action cannot escape quickly through a restriction 39 from a chamber 38 to a chamber 37 and so pressure builds up in chamber 38 in dependence on the brake actuating speed and acts on a piston 23 of the cylinder 19 and via common piston rod 25 on piston 24. At low actuating speed the additional displacement of piston 48 is smaller because of the throttling effect of restriction 39. When during braking one or more wheels begin to skid, the mass 53 rotates relative to the wheel against spring 50 to close a contact 54 and energize an electromagnetically controlled valve 8 which returns the pressure fluid via a pipe 12 to an equalizing cylinder reservoir 13 and relieves braking pressure, the switching level thus being dependent on the speed of brake actuation. Bias of spring 50 is also adjustable by means of a set screw 51. A pneumatic system Fig, 2 includes a tandem cylinder 59 with a piston 60 directly connected to brake pressure and a control piston 36<SP>1</SP> with restriction 39<SP>1</SP>.
Patent GB-498057-A (GB)
Title: Improvements relating to slicing machines
IPC: B26D7/32
Filed: 1937-08-03
Abstract: 498,057. Slicing-machines. BERKEL & PARNALL'S SLICING MACHINE MANUFACTURING CO., Ltd. (Maatschappij Van Berkel's Patent N. V.) Aug. 3, 1937, No. 21337. [Class 28 (ii)] In a slicing-machine, the conveyer of the slice-stacker is a hollow open-bottomed member driven rotationally by a connection with its top, and mechanism associated with the conveyer is housed in the cylindrical space bounded by the conveyer in its motion. As shown, the conveyer 10 is removably secured at 11a to a spindle 11 having a free wheel connection 19 with an aligned shaft 12 which is oscillated by a rack 17, on the reciprocating carriage, through gearing 13, 14, 16. The discharge fly 21 is pivoted at 26 to a stationary part of the machine, and is urged, by spring-means, to move outwardly and downwardly away from the conveyer to discharge the slice. An arm 23 on the fly carries a roller 24 which engages a cam 25 secured to the bottom of the conveyer, the cam being shaped to allow the spring to effect the discharge motion of the fly. A dash-pot 29, e.g. as described in Specification 464,649, is secured to a stationary tube 27 surrounding the spindles 11, 12, a roller 31 on the dash-pot rod 30 being arranged to roll along the tube, the roller being connected by links 32 to the arm 23. A stationary casing 33 encloses the cam devices and shock-absorbing means. The conveyer 10 need not be a complete cylinder, but a sector only thereof In a modification, the conveyer 10 is moved to-and-fro, and the cam 25 is carried on an internal structure which is driven unidirectionally, e.g., by a free-wheel drive or by a gearing from a rotating part of the machine.
Patent GB-274665-A (GB)
Title: Improvements appertaining to the harness cords of jacquard machines used in looms for weaving
IPC: D03C3/40
Filed: 1926-08-31
Abstract: 274,665. Hardaker, J. T. Aug. 31, 1926. Jacquards.-Series of jacquards harness cords a, Fig. 1, are secured together for attachment to the neck cords by weaving a cross binding cord d with the extending looped ends of the harness cords, in such a manner that an extending portion of the first or lowest weft d' is returned and interwoven above the lowest weft, so that loops are presented for resisting the pull of the side harness cords a<4>. The heavy line in Figs. 3 and 4 indicates alternative positions, to which the extension d' of the lowest weft cord may be returned and interwoven. To facilitate the insertion of the binding cord, the harness loops are held extended between bars b.