baber/WOPTO huggingface dataset:
Patent GB-291848-A (GB)
Title: Improvements in rotary key clutches
IPC: F16D11/06
Filed: 1927-03-04
Abstract: 291,848. John, F. March 4, 1927. Clutches, claw.-In rotary-key clutches for presses &c., of the kind comprising a locking- element for preventing over-running of the driven shaft, the driving-key and locking-element are connected by means imparting an increased movement to the locking-element, in order to ensure adequate engagement thereof even when the driving-key engages only the edge of its recess. The arms 8, Fig. 3, of the driving-key 1 is of greater length than the arm 9 of the locking- key 2, the. arms being in direct engagement or coupled by a link 7, as shown. The arm 9 and key 2 may be connected rigidly or by a lug 16 engaging a recess in a disc 14, the lost motion normally being taken up by a spring 15, under the tension of which the key 2, when released by the key 1, engages a recess in the driving wheel, disengagement being positive. Fig. 5 shows a modification, in which a pin 22 engages a slot 21 in the link 7, which is adjustably secured to the arm 8 of the key 1. Motion of the key 2 is limited by stops 19, 20 and shoulders 17, 18. Alternatively, the link 7 may be telescopic. The edges of the driving-wheel recesses which engage the driving-key may be slightly bevelled off, or the engagement of the locking- element may otherwise be arranged to lead on that of the driving-key. The invention is applicable also to the controlling-detent for the locking- key described in Specification 150,963.
Patent GB-651221-A (GB)
Title: Improvements in means for protecting roller blind shutters in photographic cameras
IPC: G03B9/28
Filed: 1948-02-27
Abstract: 651,221. Photographic roller blind shutters. DUCATI - SOC. SCIENTIFICA RADIO BREVETTI DUCATI. Feb. 27, 1948, No. 6159. Convention date, Oct. 16, 1946. [Class 98 (i)] To protect the fabric curtain of a roller blind shutter against overheating, e.g. when the camera is left in the sun without capping the lens, metal flaps are arranged inside the camera in front of and adjacent the shutter curtain and have metallic continuity with the casing. Preferably two flaps are rotatably mounted on two shafts parallel to the focal plane. This protective flap shutter may prevent a retractable lens mount from being collapsed into the camera until the shutter is closed and the lens mount when so retracted prevents an exposure being made before the lens mount has been drawn out. As shown, each of the blades 1 capping the roller blind shutter 2 is pivoted along one of its vertical edges at 4 or 4<SP>1</SP>. Secured to the pivot 4<SP>1</SP> is an arm 11 connected by a link 10 to an eccentric pin on a disc 9 secured to the pivot 4. On depressing the shutter release button 7, a lever 5 pivoted at 6 is rotated clockwise and a pin 8 on it engaging in a slot in the disc 9 rotates the latter to open the capping blades 1 while continued rotation of the lever 5 releases the pin 16 on the shutter drum latched by the end 15 of a pivoted lever 12 by a lug 14 on the lever 5 striking the end of the lever 12 opposite to its latch.
Patent GB-1247238-A (GB)
Title: Improvements relating to bottom-pouring refractory vessels
Inventor: MITCHELL PETER
IPC: B22D41/20
Filed: 1969-02-05
Abstract: 1,247,238. Metallurgical ladles. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 4 Feb., 1970 [5 Feb., 1969], No. 6162/69. Heading F4B. A bottom pouring ladle 3 comprises a stopper rod 17 supported from a rod 23 sliding in a clamp 53 on a detachable framework including a backing plate 29 carrying locating members 25, 27 engaging lugs 33 on a vertically movable carriage 35, said members 25, 27 also engaging lugs 47 on the ladle. Initially the nozzle housing 9 is blocked by a dummy nozzle 11 without a pouring opening 13. During heating and filling of the ladle the framework may be raised by moving said carriage 35 on a mast 37 which may be swung out of-line about shaft 39. After the stopper rod has been lowered into place, the framework is secured by a wedge 49 and the dummy nozzle 11 replaced by a pouring nozzle with an appropriately sized opening 13.
Patent GB-198432-A (GB)
Title: Improvements in briquetting apparatus
IPC: C10L5/22
Filed: 1922-03-02
Abstract: 198,432. Clewlow, C. W. G. March 2, 1922. Actuating-mechanism.-Binder is supplied to briquetting apparatus from a steam-heated funnel p the outlet of which is controlled by a spring- closed screw-retracted needle valve u.
Patent GB-1378888-A (GB)
Title: Electric switch arrangement
IPC: H01H23/28
Filed: 1971-03-05
Abstract: 1378888 Contact members for switches JOSEPH LUCAS (INDUSTRIES) Ltd 4 Feb 1972 [5 March 1971] 6210/71 Heading H1N An electric switch has two contact members 16, 19 with their longer axes substantially parallel and co-operating with respective fixed contacts 11, 12. The member 16 rocks on a pivot member 15 and contacts 20, 11 are closed when an actuator mechanism is in positions 24b, and 24c. The member 19 rocks on two pivot members 17, 18 and contacts 21, 12 are closed only when the actuator mechanism is in position 24e. When the mechanism is in position 24a the members 16, 19 engage respective stops 13, 14.
Patent GB-674533-A (GB)
Title: Electrical amplifiers
IPC: H03G5/08
Filed: 1950-03-13
Abstract: 674,533. Sound reproducing circuits. PHILCO CORPORATION. March 13, 1950 [March 19, 1949], No. 6240/50. Drawings to Specification. Class 40 (iv). In order to counteract feed-back between a loudspeaker and gramophone pick-up mounted on the same support negative voltage feed-back is applied from an odd-numbered amplification stage to the pick-up, thereby producing a damping effect. As described a piezo-electric pick-up is used and the feed-back voltage is connected to the output terminal of the pick-up or alternatively to an auxiliary electrode. The feed-back circuit may include a low-pass filter so that damping is effective only at low frequencies which are most likely to be fed back mechanically or acoustically from the loudspeaker to the pick-up.
Patent GB-1459065-A (GB)
Title: Therapeutic thiophene derivatives
IPC: C07D333/38
Filed: 1975-02-14
Abstract: 1459065 Oxamic acid derivatives UPJOHN CO 14 Feb 1975 [15 March 1974] 6252/75 Heading C2C Novel oxamic acid derivatives of the Formula I wherein R is H, C 1-10  alkyl, phenyl or benzyl; and either R 1  is H, C 1-6  alkyl or phenyl; and R 2  is H, C 1-6  alkyl, C 1-6  alkoxy or phenyl; or R 1  and R 2 , together with the carbon atoms to which they are attached form rings of the formulae wherein n is 3 to 10; R 3 , R 4  and R 5  each are H or C 1-4  alkyl; R 6  is H, C 1-4  alkyl, phenyl or benzyl; X is S or N-R 8 , where R 8  is H or C 1-3  alkyl; R 7  is phenyl, halophenyl, dihalophenyl, trifluoromethylphenyl or bis-(trifluoromethyl) phenyl, and e is the bond common to the thiophene ring and the ring formed by R 1  and R 2  together with the carbon atoms to which they are attached, and pharmaceutically acceptable metal or amine salts thereof, are prepared by reacting the corresponding 2-amino-3-cyano-4- R 1 -S-R 2 -thiophenes with C 1-3  alkyl oxalyl halides or di-(C 1-3  alkyl) oxalates and optionally transesterifying, hydrolysing or salifying the resulting esters. Pharmaceutical compositions, suitable for administration orally, parenterally, rectally or by inhalation, contain the above oxamic acid derivatives or pharmaceutically acceptable salts thereof together with pharmaceutically acceptable carriers. The compositions are used for the treatment of allergies.
Patent GB-569408-A (GB)
Title: Improvements in heat-treatable copper alloys
IPC: C22C9/06
Filed: 1942-05-11
Abstract: 569,408. Alloys; annealing. AMERICAN BRASS CO. May 11, 1942, No. 6385. Convention date, April 23, 1941. Drawings to Specification. [Classes 72 and 82 (i)] Copper-nickel alloys having a nickel content of 10-50 per cent contain also 0.1-5 per cent of tantalum, which is wholly or partly replaceable by niobium, with or without 0.1-2 per cent of silicon and 0.1-2 per cent of aluminium, and with or without up to a total of 15 per cent of any of the following metals, a specific maximum being assigned to the range of each metal: iron, zirconium, chromium, manganese, magnesium, cobalt, tin, arsenic, vanadium, molybdenum and zinc. The alloys may be heated to 950-1150‹ C., rapidly cooled and reheated to 600-800‹ C. Cold working may be interposed between the rapid cooling and the reheating and after the reheating; or the alloys may be cold worked after the rapid cooling without subsequent reheating.
Patent GB-991306-A (GB)
Title: Caffeine acetyl tryptophanate and its process of preparation
IPC: A61K31/00
Filed: 1963-02-18
Abstract: The invention comprises the addition salt of caffeine with N-acetyl-tryptophane and its preparation by reacting acetyl-tryptophane with caffeine in approximately equimolecular amounts, preferably by refluxing in a solvent preventing hydrolysis such as an anhydrous aliphatic alcohol, e.g. ethanol.  Pharmaceutical preparations having a stimulating action on the central nervous system, comprise the above caffeine N-acetyl-tryptophanate and a therapeutically administrable vehicle, suitably in the form of tablets, pills, suppositories or injectable solutions.
Patent GB-452699-A (GB)
Title: Improvements in and relating to tube draw benches
IPC: B21C1/34
Filed: 1936-03-03
Abstract: 452,699. Making tubes. DEMAG AKT.- GES., 64, Werthauserstrasse, Duisburg, Germany. March 3, 1936, No. 6470. Convention date, March 7, 1935. [Class 83 (iv)] Cupping.-A ring 1 is skewed to act as a guide to the mandrel 3 of a tube push bench and can be reset straight to present a wider effective opening to allow the tubular billet 4 to pass through. A number of these ring guides are spaced between the ring dies and each guide is mounted in trunnions in a frame with a stop 7, Fig. 5, for limiting the amount of skew given by the wedge mechanism 9 acting on the wedge 10 of the guide and a spring 8 for returning the guide to straight position. The ring 8 may be polygonal, e.g. hexagonal internally and may be pivoted at its top only to swing out instead of in trunnions.
Patent GB-686233-A (GB)
Title: Improvements relating to the securing in position of upholstery or other fabric
IPC: B60N2/70
Filed: 1949-03-09
Abstract: 686,233. Upholstery. FERNBERG, E. B., and FERNTOL PATENTS, Ltd. March 3, 1950 [March 9, 1949], No. 6475/49. Class 52(iv) Upholstery covering- fabric 34 is secured to a rigid frame member 31 by folding it over the edge of the frame and applying a U-shaped :spring clip 20, Fig. 2, having one or more barbs or internally directed prongs 23, 24. Specification 652,706, [Group XXV], is referred to.
Patent GB-471434-A (GB)
Title: Improvements in or relating to wireless aerial systems
IPC: H01Q1/50
Filed: 1936-03-03
Abstract: 471,434. Aerials. BARBOUR, K. H. March 3, 1936, No. 6482. [Class 40 (v)] A lightning protector is fitted to a dipole aerial in such a way that it does not introduce interference into the set, nor affect the normal operation of the aerial, the Figure shows a half-wave aerial 3, 4 connected to a concentric feedline 5, 6. The lightning-conductor 7 is connected to the lower end of the aerial limb 3, and by a bridge 8 to the outer sheath 5 of the feeder. The distance of the bridge is chosen so that the upper part of the lightning-conductor acts as a rejector circuit to prevent the flow of undesired signal currents along the outside surface of the feed-line as described in Specification 438,506. In a modified arrangement, the lightning protector is kept in one straight line, and the upper part forms one half of a half-wave aerial.
Patent GB-563204-A (GB)
Title: Improvements in or relating to electrical resistance elements
IPC: H01B1/24
Filed: 1943-04-22
Abstract: 563,204. Resistance coatings. SANGAMO WESTON, Ltd. April 22, 1943, No. 6526. Convention date, July 1, 1942. [Class 37] A resistance element is formed from a rod 1 of relatively non-porous ceramic material which is repeatedly dipped into a solution of sodium silicate and dried to form a thick layer of sodium silicate which is converted into a porous refractory layer 4 of silica by treatment with ammonium chloride. The treated rod is then heated to the dissociation temperature in a hydrocarbon vapour so as to deposit carbon in the pores of the silica layer. End terminals 6 are clamped over conducting end sections 8 of graphite or sprayed metal and the resistance is adjusted to a desired value by cutting a spiral groove 5 in the element. Finally, after baking to eliminate moisture, a protective coating is applied to the element.
Patent GB-124915-A (GB)
Title: Improved Means for Obtaining or Improving Mechanical Draught in Chimneys and the like.
Inventor: WOOD WILFRED ROTHERY
IPC: F23L17/00
Filed: 1918-04-17
Abstract: 124,915. Woods, W. R., and Robey, E. W. April 17, 1918. Draught, inducing. - A screw fan of annular form is used for promoting draught in chimneys and conduits. A by-pass controlled by suitable dampers may be provided, and an ejector may be arranged in the central cone of the fan. Fig. 2 shows part of a chimney fitted with a fan-wheel a, consisting of a ring of blades a' on a disk attached to a shaft c driven by a motor below. The diameter of the fan a is approximately that of the chimney, which forms the casing of the fan and of an annulus round a cylinder e fitted with a helical guide-strip f. The flue gases enter the annulus by an inlet formed by two plates c<3>, c<4> which merge into the lower and intermediate parts of the helix f, and by two side plates which are tangential to the outer wall of the chimney and the cylinder e respectively. A by-pass g is formed above this inlet and may be opened by valves c'. A stem jet i, preferably in conjunction with cones. h<1>, may be arranged so as to draw air through the cylinder e. In a modification, two such devices are combined, so that one fan and a steam jet is used to extract combustion products, and another fan, without the by-pass fitting, is used to supply air to a furnace; the two fans may be driven together or separately, and are preferably arranged co-axially, one delivering upwardly and the other downwardly. In another modification, the axis of the fan casing is inclined to the axis of a vertical chimney with dampers which may be set so as to leave a vertical path up the chimney, or to divert the gases through the fan casing.
Patent GB-362789-A (GB)
Title: Device for projecting pictures to variable sizes
IPC: G02B1/00
Filed: 1931-03-03
Abstract: 362,789. Optical - projection apparatus. PRESTON TYRE RERUBBERING CO., Ltd. and TOWERS, J. A., 72A, Friargate, Preston, and NEUSTADT, E., 228, Kurfurstendamm, Berlin. March 3, 1931, No. 6576. [Class 97 (i).] An optical projection-apparatus of the kind having movable lens systems adapted to enable the degree of magnification to be varied during the operation of the apparatus, whilst maintaining the image in focus, is characterized in that the movable lens systems are actuated automatically by mechanism adapted when driven continuously in one direction to move the lens systems repeatedly towards and from one another and the projection screen. As shown, the projection apparatus comprises a lamp 2, a condenser 3, and a transparency 4 projected on the screen 7 through the pair of lenses or lens systems 5, 6 displaceably mounted on the pillars 8, 9 respectively. The lens 5 is reciprocated by the co-operation of the roller 12, depending from the arm 14, carrying the lens 5, with the cam 10, the portion 10<1> of which is equidistant at all points from the axis. The lens 6 is reciprocated by the tension member 11 attached to the pulley 16 which is connected to a pinion 18 engaged alternately by the toothed segments 19, 20 operated by belts or chains from the shaft of the cam 10. The pulley 16 is provided with a friction brake 17.
Patent GB-992602-A (GB)
Title: Improvements in and relating to multiple-ring check valves
IPC: F04B39/10
Filed: 1963-02-19
Abstract: 992,602. Valves. HOERBIGER VENTILWERKE A.G. Feb. 19, 1963 [March 20, 1962], No. 6598/63. Heading F2V. In a multiple ring valve, e.g. for compressers, a valve plate comprising a radially interconnected series of concentric continuous annular obturating members is restrained in contact with a flat valve seat and guided to lift in opening movement by means of a flexible multiring guide plate which is attached between the valve plate and a valve guard and having at least one continuous ring cylindrically curved in the axial direction from a flat circumferential plane. Guide plate 3 (Figs. 1, 2 and 3) has the convex side towards and is attached at arms 10 by rivets 5 to inward extension 9 of valve plate 4, and is restrained in contact with valve guard 2 at the guide plate hub 7 by means of spacing member 6. In a further embodiment the valve guide plate has the concave side towards and attached to annular guide arms of the valve plate which has the annular obturating rings connected by webs along one diameter only of the valve plate. Alternatively (Fig. 8) a guide plate 3 is concavely curved towards and attached by radial arms 13 to the valve plate with the valve closing forces assisted by spring arms 12. The valve closing forces may be reinforced by bending portions of one guide plate ring towards the valve plate and by coil springs housed within the guard and passing through the guide plate into contact with the valve plate.
Patent GB-234933-A (GB)
Title: An improved method of producing white commercial pure ammonium chloride
IPC: C01C1/16
Filed: 1924-03-14
Abstract: 234,933. Smith, T. B., and Simon- Carves, Ltd. March 14, 1924. Film evaporators.-White commercial ammonium chloride crystals are obtained from crude ammonium chloride liquor by repeatedly circulating it over steam pipes until it is sufficiently concentrated and then passing it to cooling and crystallizing tanks. Referring to the plant shown in Fig. 3, chloride liquor is led to a sump at the bottom of a tank 4 and is raised to a tank 1 having a serrated edge 1<a>. The liquor overflows and passes over the lengths 2 of cast iron steam pipe, which with the boards or the like 3 placed between them form a cascade. When sufficiently concentrated, the liquor is led through pipe 8<a> to a settling tank 9, the supernatant liquor being passed through a filter-bag 11 to a distributing trough 12 whence it passes to one or other of the crystallizing tanks 14. The deposit in the tank 9 is discharged by raising the plug 15. When crystallization is complete in any of the tanks 14, the mother-liquor is passed to the tank 1. The temperature of the chloride liquor in the latter is raised to about 90‹ C. and as the dissociation temperature of ammonium chloride is not approached no corrosion occurs.
Patent GB-234219-A (GB)
Title: Improvements in or relating to marine and like life-saving appliances
IPC: B63C9/00
Filed: 1924-03-15
Abstract: 234,219. Stewart, J. March 15, 1924.. Buoys; suspended-way apparatus. - A life-saving appliance for use on a line between a ship in distress and the shore &c. is in the form of a collapsable bucket - shaped canvas bag 5 with a wooden floor, and with suspending ropes 7 the lower ends of which are secured to the floor and the upper ends to a suspension member 8. The device is provided with a lid comprising three semicircular pivoted members 10, 11, 12 over which is canvas &c. 9 preferably provided with air-holes 14. The bag is provided with a buoyant rim 15.
Patent GB-136977-A (GB)
Title: Locking Means for Change Speed Levers of Motor Vehicles.
Inventor: GAY ALBERT
IPC: B60R25/00
Filed: 1919-03-18
Abstract: 136,977. Gay, A., and Ram, F. R. March 18, 1919. Locking while standing. - The change-speed lever b is locked in neutral position by means of a fork c pivoted to a plate which is riveted to the gate a, the arms of the fork being fitted with a removable rod f which is locked in position. In a modification, the fork is pivoted directly to the gate.
Patent GB-1023316-A (GB)
Title: Method and apparatus for the ultrasonic inspection testing of solid materials
IPC: G01N29/28
Filed: 1963-02-20
Abstract: 1,023,316. Ultrasonic testing and coupling. INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE. Feb. 20, 1963 [Feb. 21, 1962], No. 6754/63. Headings H4D and H4J. In an arrangement for the ultrasonic testing of materials the test-head transducer is acoustically coupled to the material by a flowing liquid and the test-head as a whole is maintained at a required distance from the material by at least three columns of liquid one of which may also form the coupling liquid. As illustrated in Fig. 2 and Fig. 1 (not shown) the test head comprises a block 1 the working surface 2 of which is provided with three openings 4a, 4b, 4c communicating via pipes 7 with a feed-box 9 supplied with liquid under pressure (e.g. water at 4 kg./cm.<SP>2</SP>). The opening 4a also serves for the piezo-electric transducer 5 and to maintain the test head parallel to the test material 3 opening 4a is made larger than the other openings and the liquid feed pressure to each opening is suitably adjusted by calibrated jet nozzles 10a, 10b, 10c. When the materials to be tested are curved the surface 2 may be similarly curved or, an intermediate spacing piece having a flat surface bearing on surface 2 and a curved surface fitting the test material may be employed. The test head is pivotally mounted by trunnions 12a, 12b, in a frame 11 and the latter is carried by trunnions 14a, 14b in a support 13. Fig. 3 (not shown) illustrates the arrangement for automatically scanning slabs 18 (e.g. rolling mill products) where the support 13, which slides vertically in guides 15a, 15b is urged downwardly through a spring coupling 20 by a compressed air ram 19 so as to bring the working surface of the test head close to the slab 18 the force of spring 20 then maintaining the head at the required spacing against the liquid pressure. The guides 15a, 15b are formed as a carriage running on rails 16, 17 along which motion is produced by screw 24 driven by motor 25 via an electric brake 27, co-operating with limit reversing switches 26a, 26b. This effects one component of scan the other component of which is produced by driving the entire assembly along rails 28a, 28b. Liquid is supplied to the test head by means of a flexible pipe 21 and union connector 22 and the transducer is connected with an ultrasonic generator by means of a coaxial lead 23. Instead of utilizing one of the head supporting liquid columns for the transducer coupling medium a separate opening may be provided and a coupling liquid different from the supporting liquid may be employed.
Patent GB-674667-A (GB)
Title: Gas turbine plant
IPC: F02C3/26
Filed: 1950-03-17
Abstract: 674,667. Gas turbine plant. MASCHINENFABRIK OERLIKON. March 17,1950 [Nov. 30, 1949], No. 6766/50. Class 110(iii) [Also in Group XII] In gas turbine plant comprising a gas turbine and combustion apparatus supplying hot gases thereto, the combustion apparatus comprises a solid fuel fired furnace in which fuel supplied to a magazine 1 from a hopper 2 descends on to an imperforate conical fuel support 15 which may be given ac ombined rotary and axial reciprocating movement to discharge ash into an .ash pit 18, and sufficient primary air is supplied at 3 to produce a partial combustion including distillation and gasification of the coked fuel, combustible gases issuing through the annular space 8 being burnt. by heated secondary air supplied at 12 and 14 and passing through air jackets formed in the skirt of the magazine 1 and in the fuel support respectively. The combustion gases are used to actuate a turbine 24 and compressor 23, Fig. 2, driving combustion air through a heat exchanger 25 and in a further modification, Fig. 3, not shown), only the primary air passes through the heat exchanger, the secondary air being taken direct to the furnace.