baber/WOPTO huggingface dataset:
Patent GB-582645-A (GB)
Title: Improvements in or relating to electric switches
IPC: H01H15/02
Filed: 1944-08-02
Abstract: 582,645. Snap-action switches. WARD & GOLDSTONE, Ltd., and WILLETT, W. H. Aug. 2, 1944, No. 14734. [Class 38 (v) ] [Also in Group XXXVI] A switch mechanism for use, e.g., in lamp holders, comprises a slidable switch member 22 having a limited movement and carrying the contacts 23, 24 which simultaneously engage the fixed contacts 21a, 21b and 25a, 25b. The slidable member is operated by a bar 30 which actuates a toggle comprising a plunger 34, slidably mounted in a bush 33 which carries a compressible spring 37, and a pivoted stirrup 31, 32. One end of the plunger engages in a recess 35 in the switch member and the other end in the bar, and the toggle is normally inclined in the direction of movement of the switch member. On reversing the inclination, the spring is compressed to the position of reversal, whereafter it expands to effect a snap action of the switch member in the reverse direction.
Patent GB-262338-A (GB)
Title: Improvements in and relating to aerial propellers
IPC: B64C11/16
Filed: 1926-06-11
Abstract: 262,338. Harper, A., and Harper, S. A. June 11, 1926. Screw propellers.-A screw propeller is formed with arms 4 having flat surfaces which are inclined to the longitudinal axis of the propeller and also set with a pitch angle, to which surfaces are secured flat blades 5, 5A. The leading edge 6 is parallel to the shaft, the following edge 9A is inclined and the two parts are completed by the edges 8, 10, 11.
Patent GB-738582-A (GB)
Title: Improvements in and relating to valves for fluids
Inventor: PRICE RICHARD HECTOR
IPC: F16K17/164
Filed: 1952-06-11
Abstract: 738,582. Safety cut-off valves. SAUNDERS VALVE CO., Ltd. June 16, 1953 [June 11, 1952], No. 14769/52. Class 135. A valve which is opened by the rotation of a spindle against the action of main spring 22 and which is closed automatically when the pressure of the fluid controlled by the valve falls below a predetermined limit is held open by releasable retaining means movable towards the release position by spring, means 36 and normally held in the retaining position by the pressure of the controlled fluid on a diaphragm 19 supporting a disc 27 concentrically arranged about the valve spindle 16 within a bonnet 18, manually operated means outside the bonnet being provided on the valve spindle coaxial therewith for re-opening the valve when the pressure is restored. The retaining means may be deliberately released to close the valve at will at any time. The invention is shown applied to a spherical plug cock such as is described in Specification 692,085 but it is equally applicable to diaphragm valves as described in Specification 587,711. The valve plug 15 is keyed to a spindle 16 mounted in a shallow casing 17 below the bonnet 18. The flexible diaphragm 19 which is clamped between the casing 17 and the bonnet 18 has a fluid-tight connection with the spindle and is made of U-section near its centre to permit limited rotation of the spindle, this being governed by a pin 23 in an arcuate slot 24. The spiral spring 22 has one end secured to the spindle 16 and the other to the casing 17. The disc 27 is prevented from rotating by pins 28 in vertical slots 29. The disc 27 carries two vertical pins 31 adapted to engage diametrically opposite slots 32 in a shoulder 33 formed by the end of an enlarged spindle 34 pinned to the spindle 16 and carrying an external operating handle 37 whereby the valve may be re-opened due to release of the pins 31 following a failure or reduction of the pressure below the diaphragm. The controlled fluid has access to the space below the diaphragm by a passage 46 in the valve plug and passages 25, 26. The valve may be closed at any time by opening a spring-pressed vent valve 42 by a press-button 45. The valve may be retained in any one of a number of open positions by the provision of further slots 32 in the shoulder 33, the parts of the shoulder between the slots and, if desired, the ends of the pins 31, being bevelled in the appropriate direction to facilitate opening of the valve by rotation of the spindle 34. In a modification, the disc 27 is slidably keyed to the spindle 16 and the pins 28 are omitted. The spindles 16, 34 are rotatable relative to each other and the handle 37 is retained in the or one of several valve-open positions by a separate catch or gate which may be released to close the valve at will. When the pressure fails, the pins 31 are withdrawn from the slots 32 and the spindle 16, the plate 27 rotate with the valve plug under the action of the spring 22. The Provisional Specification refers also to Specification 443,226.
Patent GB-528953-A (GB)
Title: Improvements relating to aspirators for granular or powdered materials
IPC: B07B4/02
Filed: 1939-05-18
Abstract: 528,953. Pneumatic separating. ROBINSON & SON, Ltd., T., and SMITH, L. May 18, 1939, No. 14824. [Class 117] In pneumatic separators of the kind in which granular material falling down a vertical passage b is aspirated by a rising current of air, the duct k by which air is supplied from the fan j has a hinged flap m positioned with its leading edge towards the fan, so that adjustment of the flap enables varying amounts of air to be bye-passed from the passage b and returned to the inlet of the fan by way of a duct q.
Patent GB-199390-A (GB)
Title: Improvements in or relating to metal casting machines
IPC: B22D5/02
Filed: 1923-06-07
Abstract: 199,390. Holley, G. M., (Assignee of Dostal, J. L.). June 15, 1922, [Convention date]. Casting-machines; coaling moulds; moulds.- Fluid is delivered on to the surfaces of moulds to prepare them for contact with the molten metal. A series of moulds B, B<2> may be carried by a turret A and each is arranged to be acted upon, when open, by cleaning and cooling fluid, such as air, delivered by holes in pipes C<3> and then by a burning gas, which will deposit lamp-black, delivered by slits in pipes D<3>. Each fluid is controlled by a tap C<2>, D<2> operated by cams F on the fixed mould halves B<2>. A pilot jet or other device is provided for igniting the gas. Specification 186,906 is referred to.
Patent GB-1413230-A (GB)
Title: Threaded tube joint structure for a casing particularly for oil wells
IPC: E21B17/042
Filed: 1973-03-28
Abstract: 1413230 Pipe couplings KAINAN STEEL TUBE CO Ltd and SUMITOMO METAL INDUSTRIES Ltd 28 March 1973 [31 March 1972 (2)] 14965/73 Heading F2G In a well pipe joint having a packing 12, additional metal-to-metal contact sealing surfaces 6 and 8 are provided beyond the packing, which may be a ring of p.t.f.e. Step R 1  preferably seals against the rim of the axially inner periphery of groove 7 so that the packing is confined in the groove and subject to deformation by screwthread 2. A further metal-to-metal contact seal is provided between the end (16) of nose 8 and surface 17.
Patent GB-304227-A (GB)
Title: Improvements in or relating to a process for the treatment of textile fibres of cellulosic or other composition
IPC: D06B5/00
Filed: 1928-05-22
Abstract: 304,227. Compagnie Nationale de MatierÚs Colorantes et Manufactures de Produits Chimiques du Nord RÚunies Etablissements Kuhlmann. Jan. 17, 1928, [Convention date]. Cellulose esters.-In a process for treating textile fibres with liquids for the purpose of modifying their affinity for dyes, (such as the processes described in Specifications 195,619, [Class 15 (ii), Dyeing, Processes &c. for], and 198,166, wherein fibres are treated with acetic acid and acetic anhydride, or cellulosic materials after alkalisation are treated with aromatic sulphochloride), their is employed an apparatus comprising a container a for the materials connected to a heater h, a pump j, and a liquid reservoir j which may be maintained at any desired temperature. After treatment by the circulating liquid, valves s, p are closed and the liquid in the container is run off at q for purification. Washing water is introduced at d and distributed by a baffle c<1>, being run off at q. To dry the apparatus, warm air is admitted at r, the valve q being closed. The complete bath may be drawn off at m. Several containers a, in which the fibres may have reached different stages in the treatment may be served by one pump. The fibres may be treated under reduced pressure or in an atmosphere of an inert or other gas.
Patent GB-1083087-A (GB)
Title: Improvements in nuclear reactors
IPC: G21C1/00
Filed: 1965-04-09
Abstract: 1,083,087. Reactors. BABCOCK & WILCOX Ltd. April 9, 1965 [April 11, 1964], No. 15288/65. Heading G6C. A reactor is cooled and moderated by water at or above critical pressure, and includes heat exchange surfaces to transfer heat to a secondary fluid. The secondary fluid inlet may be via a double spiral pipe 12 in reactor closure cap 6. Primary coolant and moderator is circulated by motors 17. Advantage is taken in operating the reactor of the rapid change of specific volume with temperature of critical and near supercritical water.
Patent GB-1391551-A (GB)
Title: Valve mechanism for throttling a flowing fluid
IPC: G05D16/06
Filed: 1972-04-04
Abstract: 1391551 Valves COMPTEURS SCHLUMBERGER 4 April 1972 [2 April 1971] 15337/72 Heading F2V In a valve controlling flow from high-pressure region 11 to low-pressure region 12 movement of a valve stem 34 in direction B first causes a valve member 42 to move off a seat 23 to permit flow via annular space 46. Continued movement allows flow through the top of recesses 27 in flange 25 and during the further movement of the valve member 42 relative to the flange 25 the flow area increases exponentially with respect to the displacement of the valve member, the percentage rate of increase being constant. When flange 55 on the valve member abuts a flange 67 further movement of the stem 34 causes the seat 30 to move away from the valve member 42 to open up a second flow passage whose flow area increases linearly with the displacement of the seat 30.
Patent GB-102808-A (GB)
Title: Improvements in and relating to Change Speed Gear.
Inventor: HILL JOSEPH ALBERT
IPC: F16H15/10
Filed: 1916-10-28
Abstract: 102,808. Hill, J. A. Oct. 28, 1916. Variable-speed friction gearing. - Conical rollers 16, 17 of adjustable angle at the apex are adjustable longitudinally on a rotary shaft 15 and bear on opposite faces of a disk 1, which is capable of rotation in its own plane and free to move about an axis 5, 5 perpendicular to the shaft 15. In the form shown, a rotary shaft 10 carries a disk 9, which drives the disk 1 through a helical spring 11. The disk 1 rotates on a ball bearing on a ring 2<a> carried by pivots 5 in bearings attached to a fixed hanger 7, to which are also attached a bracket 13 supporting on end of the shaft 15 and a bearing 12 for the end of the shaft 10. The rollers 16, 17 are composed of longitudinal segments 18 pivoted on sleeves 19; each segment is linked to another sliding sleeve 21, and the sleeves of the two rollers are connected by an endless chain 26 inside the shaft 15, which keeps the rollers equidistant from the pivots 5, 5. A fork 23 simultaneously adjusts the position of the rollers on the shaft 15 and expands or contracts them, and the spring 11 keeps the disk 1 in contact. The disk 1 may be formed of coiled strips of leather &c. connected by radial bolts 4 to two rings 2, 3.
Patent GB-631490-A (GB)
Title: Wagon loading mechanism
IPC: B60P1/54
Filed: 1947-06-11
Abstract: 631,490. Loading and unloading vehicles; overhead cranes. LETOURNEAU, Inc., R. G. June 11, 1947, No. 15408. Convention date, June 11, 1946. [Class 78 (iv)] Mechanism for loading a vehicle comprises a pair of longitudinally extending, laterally spaced rails supported above the vehicle, a carriage consisting of a rigid frame disposed intermediate and depending between the rails a pair of spaced rollers journalled at each end of the frame and riding the rails, a pulley journalled in the frame between each pair of rollers, a cable anchored adjacent one end of the rails and reeved over one pulley and looped downwardly therefrom between the pulleys, and then reeved over the other pulley and extending therefrom longitudinally of the rails, a winch to which the other end of the cable is operatively connected, a load suspending unit including a sheave supported in rolling relation in the loop in the cable below the carriage, and power means to pull the carriage along the rails in one direction or the other. Figs. 1, 4 show the application to a wagon supported on a tractor 10 wherein the carriage 16 is moved on rollers 17 along rails 15 housed in a member 12 by a cable 22 operated by a reversible winch 20. This cable extends from opposite sides of the winch drum 21, the cable portion 23 passing round a sheave 25 in a pulley block 26, and a pulley 27 to an anchor and then secured at 28 on the carriage whilst the other portion 24 extends round a sheave 29 in the block 26, through a pipe 30 running the full length of the member 12, and around a sheave 31 to an anchor 32 on the carriage. The load hook 38 is supported from a cable 34 one end of which is secured at 35 to the member 12 whilst the other end is connected to a winch 42. Rollers 40 journalled in crossheads 39 secured to the bottom of the carriage 16 cause the cable 34 to maintain track on pulleys 18 on the carriage.
Patent GB-584862-A (GB)
Title: Improvements relating to hermetically-sealed electrical devices such as condensers
IPC: C03C29/00
Filed: 1944-08-12
Abstract: 584,862. Metal-to-glass seals. FERRANTI, Ltd., CHILCOT, A. L., and BIRTWISTLE, W. Aug. 12, 1944, No. 15427. [Class 36] The metal end c of a container b for an electric condenser &c. a has a depression filled at least partially with molten glass e through which a conductor wire d passes, the metal of the end, e.g., copper, having a coefficient of expansion greater than that of the glass which is thus subjected to compression as it cools, due to the greater contraction of the metal end. The conductor wire d may have a glass bead fused to it first and then to the end, or alternatively to both simultaneously. Pressure may be applied to the glass by means of hot steel rods, above and below the metal end, to compress the glass into position, Figs. 4, 5 (not shown). The conductor wire of chrome-iron, borated copper-clad nickel-iron &c. having an expansion coefficient matched to that of the glass may have a glass sheath fused to it before the glass bead is threaded over it. The cupshaped end c may have a hemi-spherical depression, as shown, or cylindrical, or it may be formed by pressing a circular ridge in the bottom thereof, from the interior, Figs. 6, 7, (not shown), or alternatively the wall of the cup may be reversed, the depression being in the interior of the cup.
Patent GB-835015-A (GB)
Title: Improvements in tube arrangements
IPC: F16L43/00
Filed: 1956-05-17
Abstract: 835,015. Pipe joints. HUET, A. May 17, 1956 [June 23, 1955; Dec. 30, 1955], No. 15434/56. Class 99(1). Large diameter pipes a, b, are joined by first forming one or more branch apertures c<SP>1</SP>, d<SP>1</SP>, in the sides and welding them together and then joining the open ends e, f, Fig. 1, of the pipes by a pipe bend g or bending the open ends j, k, Fig. 2, towards one another and welding them together. In Fig. 1 the. open ends e, f, of the pipes are reduced to the diameter of the bend g. In Fig. 3 a tubular header v is provided with branches x for connection to corresponding branches on a tube b<SP>2</SP>, the end y of the tube being reduced and connected to a further branch x.
Patent GB-107708-A (GB)
Title: Improvements in Memorandum Tablets and the like.
Inventor: BUDGE JOHN
IPC: A44C5/00
Filed: 1916-10-30
Abstract: 107,708. Budge, J. Oct 30, 1916. Memorandum tablets, securing to wrist.-A tablet to be attached to the wrist comprises a plate A carrying rotatable paper-carrying spools C, and a wrist-strap G passing through slots S in the ends of the plate. The spools may have milled heads D, and may be attached to the plate by wires B. According to the Provisional Specification, the writing-surface may be formed by a number of removable cards.
Patent GB-384331-A (GB)
Title: Improvements in and relating to protective apparatus for electric circuits
IPC: H02H3/28
Filed: 1931-05-27
Abstract: 384,331. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. -(Assignees of Kennedy, L. F. ; 58th Street, Philadelphia, U.S.A.) May 27, 1931, No. 15523. Convention date, May 27, 1930. [Class 38 (v).] Electromagnetic switches.-A protective relay is provided with operating and restraining windings for controlling its movable member in accordance with the relative values of current at two parts of a system, and with means for varying the minimum operating value of current in accordance with the voltage of the system, whereby the sensitiveness of the relay is changed to meet a condition of the system such as a fault or switching surge. As applied to parallel feeders 7, 8 having latchedin circuit-breakers 9, 10, each feeder has associated with it a relay 15 having a centrallypivoted armature 16 which is acted on by an operating winding 17 energized by its associated feeder, restraining winding 18 energized by the other feeder, a winding 24 for holding the armature in its displaced position, and a further restraining winding 20 energized by, the voltage of the associated feeder. Further restraint is imposed by a spring 39 and the contacts are shown at 22, 23. The adjustable cores 25, 26 of the windings 17, 18 have short-circuited windings 30 to prevent the restraint from becoming zero, and have a magnetic member 28 arranged between them to which the armature is pivoted. The winding 20 also has an adjustable core 31 and is surrounded by a magnetic screening shell 33 with which the armature 34 co-operates. The latter is loosely mounted on the armature 16 by means of a countersunk hole larger than the countersunk head of the fixing screw 35 that screws into a non-magnetic stud 36 adjustably carried by the armature 16. The windings 17, 18 are connected so that their fluxes are vertically upwards or downwards with normal current directions, and the relation between the operating and restraining currents is a straight-line one. The effect of the voltage restraint is to decrease the sensitivity of the relay on normal, as opposed to reduced, voltage. Similarly the sensitivity is increased by the cutting out of a winding 18 when one feeder is out of service, but so long as the live feeder is on normal voltage there will be sufficient restraint against operation of the relay. A change in the relative directions of currents causes a redistribution of flux in the relay, the effect of which is to give increased sensitivity. In Fig. 3 such a relay 15 is shown applied to a transformer 50, the winding 20 being energized so as to provide restraint when switching in, and so to prevent the rush of magnetizing current from operating the relay. The winding 20 is accordingly connected to the contacts of an instantaneously-closing, slow-opening, relay 56. The operating winding 17 is connected across normally equipotential points of a circuit 51 so as to carry the difference currents between the two sides of the transformer 50, the sum passing through the winding 18.
Patent GB-420051-A (GB)
Title: Improvements in and relating to relief valves
IPC: F16K17/08
Filed: 1934-05-28
Abstract: 420,051. Safety valves. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. May 28, 1934, No. 15886. Convention date, May 20, 1933. [Class 135] A relief valve 32, which is held against a seat 15 by a spring 35, is mounted on a sleeve 31, which forms, with the end of a stem 21 on which it slides, a chamber 33 connected by passages 34 to the face of the valve. The pressure in the chamber 33 is reduced when the valve lifts by, (a), arranging the passages 34 adjacent the valve seat, or (b), providing vent holes 59 (Fig. 7) in the sleeve 31 which register with ports 57 in the end of the stem 21, the passages 34 being in this case replaced by a central passage 56. The size of the ports 57 may be adjusted by rotation of a rod 60 having a cut-away end 61. An adjustable pin 36 limits the lift of the valve. The stem 21 is held on a plate 17 by a screwed cap 23, draining passages 25, 26, 27 being provided.
Patent GB-171426-A (GB)
Title: Improved internal combustion engine
IPC: F01L5/00
Filed: 1920-06-11
Abstract: 171,426. Leroy, J. E. J. June 11, 1920. Valves; valve-gear. - The valves of the motor cylinder and pump of an engine are in the form of rings a, p<1>, p<2> coaxial with the cylinders. Each ring is actuated from its cam n<1>, h through a two-part push-rod g, f, Fig. 2, the part f having two projections e between which fits a lug d on the ring; the ring carries a number of rollers b, which move in helical slots in a stationary cover c. As the rod f, g reciprocates, the valve is given a helical movement, the spring j returning the valve and rod after displacement of the cam. Both power cylinder and pump are double-acting, but by axial movement of a rod in the cam shaft, the cams may be moved to make the cylinders singleacting. One of the pump cams h is formed with a step 9, Fig. 4, so as to gfve, after axial displacement, a different cam surface to the corresponding bowl on the valve rod. In its usual position, the cam controls the movement of the valve to effect opening of the suction and delivery ports k', l<1>; in the displaced position, the cam controls the valve so that only the suction ports are opened, the air, which is then compressed to a higher pressure than normal, being delivered through the valve 41, Fig. 1, to a special reservoir as described in Specification 144,702. The cam shaft is stated to rotate at half-speed, and has starting, injection air and fuel cams s, t, u in addition to the main valve cams.
Patent GB-159873-A (GB)
Abstract: 159,873. Santuari, E. March 1, 1920,- [Convention date]. Regenerative systems; systems depending on the use of two or more motors.-Relates to regenerative control of direct-current traction motors. working in groups of four, six, eight or more. The general principle of the invention is, in passing from ordinary to regenerative running, to connect the motor armatures like the four arms of a. Wheatstone bridge, and the motor fields in series in the neutral wire, introducing resistances or other elements so as to disturb the balance of the bridge, and thus cause the field to be excited. In the arrangement shown in the Figure, the armatures of four similar motors 1, 2, 3, 4 constitute the four arms of the bridgo and the fields 5, 6, 7, 8 are connected in series across the neutral points, the symmetry being disturbed by placing a variable resistance 9 in shunt with the fields 6, 7. Excitation current will then traverse the fields in the manner acquired for regenerative braking. Any pairs of motors may be replaced by a single motor with double commutator. Other methods of disturbing symmetry are: (1) To put variable resistances in two arms of the bridge; (2) to use motors running at different speeds or having dissimilar saturation curves, or different numbers of turns in the windings. A resistance 12 is placed in the neutral connection to steady the exciting current. The Specification as open to inspection under Sect. 91 (3) (a) states that for some purposes the machines are preferably compounded by the provision of individual series field-windings 5<1>, 6<1>, 7<1>, 8<1>, as shown in Fig. 7 (Cancelled). When six or more motors are in use, special groupings are required, of which Fig. 9 (Cancelled) is one example, E denoting the whole excitation circuit. Load equalizing arrangements, of which the variable shunt resistance R, Fig. 17 (Cancelled), is one example, may be required. The transition from ordinary running to regenerative running takes place through an intermediate stage shown in Fig. 15 (Cancelled), in which two motors 1, 4 run idly on open circuit and the two others run in the ordinary way as series motors. Resistances or other variable elements are adjusted so that on completing the bridge connections at 10, 11 violent surg. ings of current are avoided. This subject-matter does not appear in the Specification as accepted.