baber/WOPTO huggingface dataset:
Patent GB-231416-A (GB)
Title: Improvements in hydraulic drive for broaching machines and the like
IPC: B23Q5/06
Filed: 1924-07-18
Abstract: 231,416. Lapointe Co., J. N., (Assignees of West, D. H.). March 26, 1924, [Convention date]. Broaching.-An hydraulic drive for the reciprocating members of broaching machines constructed so that the return stroke is more rapid than the working stroke comprises a pump 20, which delivers liquid to a chamber 19 for causing the working stroke of a member 12 through a piston 18 and piston-rod 14, and delivers liquid through a stationary pipe 23 to the interior 21 of the piston rod for causing the return stroke. During the working stroke, liquid from the chamber 21 passes to the pump through pipes 26, 25 and liquid from the. chamber 23 passes to a reservoir 24 and also to the pump through a pipe 46, valve 47, and pipe 25. During the return stroke, liquid moves as indicated by the arrows. The pump out-put is reversible in direction, being controlled manually by a lever 52 or automatically through lugs 53, 54, 55, its controlling means being preferably connected to the rod 48 of the valve 47. In a modification, the pump may deliver in one direction only, means being then provided for reversing the connections to the pump. The reservoir 24 is open to permit escape of air, and the chamber 19 is connected to it by a conduit having a valve 54, which is opened by a weak spring between the strokes. Relief valves 27, 37 are provided, a pan 30 receiving liquid from them and from a pump leakage drain 29. The pan 30 and reservoir 24 may be combined in one receptacle set either at the top or bottom of the apparatus, and air-venting means may be provided.
Patent GB-1121702-A (GB)
Title: Improvements relating to lift control systems
Inventor: GOSLING JOHN CEDRIC
IPC: B66B1/34
Filed: 1965-04-26
Abstract: 1,121,702. Control of D.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 26 April, 1966 [26 April, 1965], No. 17524/65. Heading H2J. [Also in Division G3] In a Ward-Leonard control system for a lift, the stand-still energization of motor M is determined by the comparison of signals representing, on the one hand, the degree of unbalance between the car and counterweight and, on the other hand, the torque being exerted by the motor to counteract this unbalance. Before the lift is started, regulator R excites generator field winding F so that stalled armature current passing through resistor R1 produces a voltage which balances the output from load measuring circuit DT, the points MP2 and E being at equal potential in the state of balance. The circuit DT comprises a transformer with two secondary windings whose coupling to the primary is varied differentially by movement of a magnetic bar which is displaced by a load-bearing part of the lift structure. The secondary windings are connected to respective bridge rectifiers in series opposition to provide the signal representing the degree of unbalance. When loadbalancing is established, the brake is lifted and the system is converted to a speed regulator in which a reference voltage applied to point MP1 is compared with the output of tachometer generator TG. The acceleration full-speed, and initial deceleration operations of the lift are controlled by ramp function generator U associated with speed-selecting relays which drop out when the lift passes predetermined positions in the shaft. A pre-levelling speed is selected by applying a reference voltage determined by the resistor R4 to the point MP1, other pre-levelling speed relays being dropped out in turn as the lift approaches a floor. When the lift is travelling at a low speed, the system is returned to the load-balancing operation, whilst capacitor C is discharged into regulator R to force the field winding F in the " off " direction. The armature current is thus reversed to brake the motor. A suicide connection is made for the generator when the friction brake is applied by connecting the field winding across the armature. A similar arrangement is used for the regulator R which may comprise thyristors.
Patent GB-319626-A (GB)
Title: Improvements in or relating to guide plates or retarders for the tubes or coils of heat exchangers, exhaust silencers or the like
IPC: F01N1/12
Filed: 1928-06-18
Abstract: 319,626. Kent, S. N., and Billetop, T. C. June 18, 1928. Tubes with internal baffes.-Retarders for inserting in tubes of heat exchangers or exhaust pipes comprise lengths of twisted strip metal connected by flexible parts of smaller cross-section for example wire. In the example shown each twisted part comprises a plane part a<1> and oppositely twisted parts a<2>, a<3> and the flexible connectors are shown at C.
Patent GB-1373142-A (GB)
Title: Mixers
IPC: B01J15/00
Filed: 1972-04-17
Abstract: 1373142 Mixing SULZER BROS Ltd 17 April 1972 [29 April 1971 24 Jan 1972] 17619/72 Heading B1C A mixer for flowable gaseous, liquid or particulate materials comprises at least one mixing element through which the materials flow co-currently, the or each element including layers defining flow channels, the flow channels of each layer running parallel and being inclined to those of the adjacent layer, with communication established between the channels of adjacent layers. A series of elements may be provided within a tube through which the materials flow, Figs. 1, 3, 6 and 7 (not shown). Each element may comprise a stack of corrugated, apertured lamellae 6, Fig. 2, presenting their edges to the flow of materials, or flat elements 20, Fig. 4, e.g. of metal may have strips 21 welded or brazed to them to define the channels. Further, Fig. 5, banks 23 of slotted tubes 24 may be provided. The lamellae 6, &c., may incorporate catalysts for promoting gaseous reactions, and they may be formed from a woven or knitted metal fabric.
Patent GB-499867-A (GB)
Title: Improvements in regulating fuel supply to internal combustion engines
IPC: F02M69/00
Filed: 1937-06-25
Abstract: 499,867. Spray carburetters. SCHIMANEK. E. June 25, 1937, Nos. 17702, 17703., and 17704. Convention dates, June 25, 1936, Aug. 18, 1936, and March 3, 1937. [Class 7 (iii)] The injection pressure of fuel delivered under pressure into the air path leading to the cylinder is controlled by at least one pressure regulator which is itself controlled in dependence upon the quantity of air flowing to the engine, i.e. in dependence upon the weight of air dealt with and upon the loading and speed of revolution of the engine. Fuel supplied under pressure through a pipe 15 to a chamber 10 is controlled by a valve 14 mounted on a diaphragm 11 and a rod 15 connects the diaphragm 11 to a second larger diaphragm 12, the chambers 9, 8 between the diaphragms and below the diaphragm 12 being connected respectively to the throat 6 of a Venturi 4 in the main air passage 1 and to the widest part 7 of the passage ; the valve 14 is thus controlled by the combined action of the diaphragm 11 subjected to the lowest pressure, i.e. at the throat 4 and the larger diaphragm 12 subjected to the difference between the pressures at the points 6, 7, and tends to open against the fuel pressure as the suction increases. Air supplied through a passage 20 emulsifies the fuel as it is sprayed from a nozzle 21 placed close to the chamber 10 and the resulting mixture is introduced at any desired point in the passage 1 which may have either an anterior or posterior throttle. In the former instance, an additional diaphragm may be secured to the diaphragms and the additional chamber be connected to the air passage in front of the throttle to compensate for barometric pressure. In the latter case, a separate diaphragm unit may be provided to function during idling and like periods. As shown in Fig. 3, the diaphragms 40, 41 are of equal size and the throat of the Venturi 4 communicates with the chamber 38 between the diaphragm 41 and the casing while the chamber 39 between the diaphragms is connected at 7 to the wide part of the air passage. The connection between the diaphragms comprises a toggle linkage 25 which converts the downward force exerted by the suction on the lower diaphragm 41 into an upward force on the diaphragm 40. The fuel is supplied by one or more pumps for each regulator or group of regulators.
Patent GB-560775-A (GB)
Title: Improvements in or relating to locating and securing devices for use with rods or tubes
IPC: F16B9/02
Filed: 1942-12-21
Abstract: 560,775. Pistons. AUTOMOTIVE PRODUCTS CO., Ltd., and BROCK, W. H. J. Dec. 21, 1942, No. 17826/43. Divided out of 561,134. [Class 122 (i)] [Also in Group XXII] A collar is secured upon a rivet, to act as a head, by applying the collar in the form of a dished washer and then flattening the washer to cause the edge to embed itself in the rivet. A piston may be similarly secured upon a shouldered rod. The plates 24, 25, Fig. 1, are secured by rivets 23, particularly rivets of soft metal, by a dished washer applied as at 11a and flattened as at 11. In securing a piston 31, Fig. 2, against a shoulder 33 on the rod, the latter is formed with a groove 34 which the dished washer engages on flattening. When the rivet &c. is required to be free to rotate relatively to the body, a shim is inserted between the head 23 and plate 24 and is removed after the washer has been flattened. Specification 294,629, [Class 83 (iv)], is referred to. According to the Provisional Specification a piston may be secured between two dished washers, one washer being first applied to the rod and seamed.
Patent GB-872616-A (GB)
Title: A single track vehicle
IPC: B62J17/00
Filed: 1959-05-26
Abstract: 872,616. Cycle weather shields. ZAVODY 9. KVETNA NARODNI PODNIK. May 26, 1959 [June 14;: 1958], No. 17913/59. Class 136(1). A single track vehicle has an open frame formed with a cross member 2 to which is attached a fuel tank, the tank forming an upper portion 3 of a protection shield, the protection shield having a lower portion 4 which is connected at its lower end to foot boards 5 of the vehicle and at its upper end to the cross member 2. The fuel tank is formed by the upper portion 3 of the protection shield, a jacket 6 and a bottom plate 7 which is seated on the cross member 2.
Patent GB-1300627-A (GB)
Title: Motor vehicle rear view mirror assembly
IPC: B60R1/04
Filed: 1970-04-15
Abstract: 1300627 Vehicle rear-view mirrors FORD MOTOR CO Ltd 15 April 1970 [7 May 1969] 17922/70 Heading B7J A rear-view mirror assembly 18 for a vehicle comprises a reflective mirror element 28; a mounting member 20 comprising a cross member 26 secured to said mirror element and a plastically deformable leg portion 22, the free end 24 of said leg portion being securable to a part of the vehicle bodywork 14; and a sleeve 34 surrounding at least a portion of the length, and limiting the plastic deformation of, the leg portion. The sleeve 34 is provided around its circumference with V-shaped grooves 36 which do not prevent relatively small degrees of bending of the leg portion, but once the walls of the grooves are in contact on the concave side of the bend, Fig. 4, further deformation is strongly inhibited. The sleeve 34 is formed integrally with a housing 30 which secures the cross member 26 to the reflective element 28. Preferably the reflective element is made of a clear plastics material, the mounting member is composed of a soft metal, e.g. lead or pure grade aluminium and the housing and sleeve are composed of a flexible plastics material, e.g. vinyl.
Patent GB-545998-A (GB)
Title: Improvements in or relating to machines having reciprocating slides for grinding screw threads and other kindred operations
IPC: B24B19/02
Filed: 1940-12-20
Abstract: 545,998. Gearing screw-and-nut; gearing toothed. ATKINS, H. F. Dec. 20, 1940, No. 17935. [Class 80 (i) and 80 (iii)] [Also in Group XXIIII Relates to the minimizing or prevention of backlash in machines wherein a grinding- wheel or tool-carrying slide is to gearing driven by toothed gearbe reciprocated by screw-and-nut ing. According to the invention, additional gearing tends, in the forward traverse of the slide, to drive the rotatable member of the screw-and-nut gearing faster than the change wheels will allow, and axial pressure is applied to the traversable lead screw .member in the reverse direction only, so as to keep the same flanks of the thread in the screw and nut in contact throughout. The work to be operated upon by the grinding wheel 1 is mounted between a fixed centre 3 and movable centre 2 in a spindle 4 connected through change wheels 5, 6, 7 and sleeve 13 with the rotatable nut 8. This engages a lead screw 9 traversable with slide 10 carrying the grinder. The lead screw is fixed in a sleeve 11 on 'the slide 10 and is formed as a cylinder 12 to receive a plunger 14 through a bore 14a of which fluid under pressure may be introduced during the return stroke. The additional gearing between the spindle 4 and nut 8 comprises a gear 16, by which the spindle is driven, this gear engaging a toothed annulus 17 mounted about a shaft 18 freely supported in the headstock. A second annulus 19 is mounted freely on the shaft 18 and carries a wheel 20 engaging with the lead nut 8. Between the annuli 17, 19 and the shaft 18 are friction disc clutches 21, 22, 23. Positive clutch teeth 24 on an axially movable member 26 may be brought into engagement with similar teeth on a collar 25 keyed to the shaft 18. During forward movement of the slide 10, the friction clutches allow slip in the additional gearing ; during reverse movement, the clutch 24 is engaged and the clutch discs 21, 22, 23 act as a brake: The hydraulic pressure applied during the return stroke serves to keep the same flanks of the screw threads in engagement.
Patent GB-579275-A (GB)
Title: Improvements in or relating to explosive compositions comprising low freezing liquid mixtures of aromatic nitro-compounds
IPC: C06B25/08
Filed: 1942-12-18
Abstract: 579,275. Explosives. WRIGHT, H. R., TAYLOR, J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Dec. 18, 1942, No. 18001. [Class 9 (ii)] A low-freezing explosive composition comprises 70-85 per cent by weight of a mixture of any two or more of the isomers of dinitrotoluene, the mixture being wholly liquid at .0‹ C., the remainder consisting of T.N.T. and tetryl which may be present in equal proportions. The mixture of isomers may be that obtained by the nitration of the meta fraction of mononitrotoluene which is obtained in the manufacture of ortho- and para-nitrotoluene from toluene (see Specification 263,018, [Class 2 (iii)]. The composition dissolves or gelatinises nitrocellulose, and the composition, or gelatines derived therefron, maybe mixed with oxidising salts, explosive salts such as ammonium nitrate, metal powders and other solid reducing agents, liquid and solid nitric esters, flamequenching ingredients, organic bases and like stabilisers, and chromates and other sensitisers of thermal decomposition. Specific mixtures described contain :-(1) The composition, pentaerythritol tetra-nitrate, and dibutyl phthalate or tricresyl phosphate. (2) The composition " seeded " with a solid mixture of T.N.T. and tetryl, blasting soluble nitrocotton, and pentaerythritol tetranitrate. (3) The composition, dibutyl phthalate, industrial nitrocellulose, blasting soluble nitrocotton, and pentaerythritol tetra-nitrate.
Patent GB-178765-A (GB)
Title: Improvements in or connected with the control of electric motors for electric cranesand the like
IPC: B66B1/52
Filed: 1921-07-02
Abstract: 178,765. Adamson, D., Brooke, W., and Holme & Co., Ltd., E. July 2, 1921. Sparking, preventing; switches, actuating by electric motors.-Limit switches operated by hoist motors break the circuit at several places in series. A nut 4 travelling on a screwed spindle 3 in gear with a hoist drum carries two sets of contacts sliding over two corresponding sets of stationary contacts 5, 6 in the circuits for forward and reverse running of the motor. Four or more contacts are placed in series in each set so as to sub-divide the spark and reduce the required amount of separation.
Patent GB-1218609-A (GB)
Title: Improvements in or relating to electrolytic diaphragm cells
IPC: C25B9/19
Filed: 1968-04-17
Abstract: 1,218,609. Electrolytic cells. KONINKLIJE NEDERLANSCHE ZOUTINDUSTRIE N.V. April 17, 1968 [April 21, 1967], No. 18168/68. Heading C7B. A diaphragm cell, e.g. for electrolysis of brine, is formed by a bottom, four side walls including two opposite side walls 7, 7' which each provides the main support for a cathode member 11 or 11' provided with an array of hollow finger-like elements extending substantially perpendicularly from the said wall and being covered with a diaphragm material 13 or 13', the cathode members and side walls forming two separate cathode chambers each connected with an electrolyte outlet 9 or 9', the arrays being so disposed that the finger elements are interleaved so that a serpentine anode chamber is formed by interconnected spaces between diaphragm material on adjacent walls of the arrays, an electrolyte inlet 17 Fig. 1 (not shown) debouching electrolyte into the anode chamber, preferably near the cell bottom, and plate-like anodes 3 extending perpendicularly from the bottom into each of the spaces defined between the diaphragms on the interleaved fingers of the arrays. The bodies 11, 11' are formed of metal gauge and the diaphragm material may be of asbestos or synthetic fibres and the anodes are connected through the base to a bus-bar 6. Gas outlets are provided from the cathode chambers and anode gas escapes through a vent in the concrete cell cover. The body of the cell is formed by two identical units joined by vertical sealing strips 24.
Patent GB-644130-A (GB)
Title: A snap-action thermostatic element and method of making the same
IPC: H01H37/54
Filed: 1947-07-09
Abstract: 644,130. Thermal switches. SMITH MANUFACTURING CO., Inc., F. A. July '9,1947, No. 18177. Convention date, Nov. 28, 1944. [Class 38(v)] [Also in Group XIII] A snap-acting thermostatic element comprises a body member 39 of bimetallic sheet material and a restraining member 41 connected between spaced portions of said body member, the restraining member being deformed about a longitudinal axis extending therethrough to resolve the tension in the restraining member into torsional and longitudinal components, the deformation of the. restraining member mechanically stressing the body member for snap action. In the form shown the thermostatic element comprises a body member 39 with parallel sides and having two tapered slots 40 spaced from the sides to form two elongated restraining members 41, each of which is deformed at the ends to a helical form leaving an intermediate flat portion 44, the helical deformations 42, 43 being of opposite hand. The restraining members 41 may be bimetallic or they may be formed from a single metal and the intermediate flat portions 44 may be of greater area than the helical portions of the restraining members, Fig. 8 (not shown). The bimetallic element may include a compensating portion 49, Fig. 9, comprising a transverse bimetallic strip in which the metals 50, 51 of high and low coefficients of expansion respectively are in reversed relation to the metals 47, 48 of the body member 46 and of low and high coefficients of expansion respectively. The metal 50 of the compensating portion 49 and the metal 48 of the body member 46 may comprise a continuous strip as shown, the other metals 47, 51 of the body member and compensating member respectively, being added during the rolling operation. Alternatively the compensating portion 50, 51, may be butt welded to the body member 46 or it may be superposed on the body member and lap welded thereto, Fig. 11 (not shown). The thermostatic element makes and breaks the contact 23, 27. The terminal studs 16, 17 are embedded in a moulded base 15 of insulating material, the switch being enclosed by a cap 31 and having a mounting strip 37.
Patent GB-1036975-A (GB)
Title: Method and apparatus for feeding additive material to a cupola
Inventor: LAUDENSLAGER HARRY BROWN
IPC: F27B1/20
Filed: 1965-04-29
Abstract: 1,036,975. Feeding shaft furnaces. BLACKSTONE CORPORATION. April 29, 1965, No. 18183/65. Heading F4B. Additive material is fed below the surface of molten metal in a cupola hearth from a bunker 20 via a vibratory shoot 21, and a hopper 22 discharging by a door 24 operated by air cylinder 25 into a delivery passage 23 and a feed conduit 26, final discharge into the cupola being by a ram 29 operated by air cylinder 30 or opening a gate 27 operated by air cylinder 28. The charging operation is carried out when blast air supplied to the tuyeres 16 is cut off by valve 18 in pipe 17 operated by air cylinder 19, whereupon level of liquid metal in the hearth rises from B to A. Sequential operation of cylinders 19, 25, 28 and 30 and operation of vibratory shoot 21 are controlled by conventional electric timers and circuitry, Fig. 4 (not shown). Restarting of the blast lowers the liquid metal level again, this movement assisting solution of the additive.
Patent GB-746174-A (GB)
Title: Improvements in the preparation of photographic direct positive images
Inventor: LEVENSON GERALD ISAAC PASTERNA
IPC: G03C8/06
Filed: 1952-07-18
Abstract: 746,174. Photographic reversal transfer process. KODAK, Ltd. July 17, 1953 [July 18, 1952], No. 18217/52. Class 98 (2). A silver halide emulsion layer is exposed, developed and contacted in the presence of a silver halide solvent such as hypo with an image-receiving layer as of film or paper containing a precipitating agent such as a metallic sulphide, selenide or telluride in concentration sufficient to convert the whole of the silver salt diffusing into such layer to a silver compound forming a visible image. The process is particularly suitable for copying documents or printed or typewritten originals and produces a laterally reversed positive image of the document so copied, but the exposed and developed emulsion layer may be first contacted with an intermediate layer not containing a silver salt precipitating agent and the intermediate layer contacted with the precipitating agent to give a correct copy. The silver halide solvent may be placed between the developed emulsion layer and the receiving layer as these are brought into contact or may be incorporated into the receiving layer before such contact. A stop bath may be used after development but before contact and soluble salts may be washed out of the receiving layer after contact. In example (1) an unfixed silver negative prepared in the usual way is lightly rinsed, squeegeed to remove excess water, provided along one edge with a bead of a viscous starch-hypo composition, and rolled to spread the latter on a gelatin-zinc sulphide coating lying on a paper support to produce a positive image in silver sulphide which may be left in this form or rinsed with dilute HCl to remove unwanted zinc sulphide. In example (2) the silver negative is squeegeed directly on a gelatin-zinc sulphide-hypo layer on a paper support. Specification 745,445 is referred to.
Patent GB-897269-A (GB)
Title: Improvements in or relating to devices for retaining bent bars or rods with apertured elements
IPC: F16B2/22
Filed: 1960-05-24
Abstract: 897,269. Clips; hinges and pivots. RAYMOND, A. V., and OUTHENINCHALANDRE, L. J. V., [trading as RAYMOND DRUCKKNOPFUND METALLWAREN-FABRIK, A.]. May 24, 1960 [May 27, 1959], No. 18221/60. Classes 44, 65(2) and 89(2). A device for securing the end 2 of a bent rod 1 to a link 3, or other member, comprises a U-shaped member 4, the arms of which are bored to take the rod, and a spring-clip 8 to engage the straight part of the rod. The clip may be separate and secured to the U-shaped member by welding, riveting or mechanical securing means, or it may be integral with the member 4. One arm of the latter is offset to give freedom of movement for the rod.