baber/WOPTO huggingface dataset:
Patent GB-1000684-A (GB)
Title: Diol derivative of 9-oxabicyclo(3,3,1)nonane
IPC: C08G63/66
Filed: 1963-07-03
Abstract: 2,6 - Dihydroxy - 9 - oxabicyclo - (3,3,1)-nonane may be polyesterified with dicarboxylic acids, the products being polyesters of high thermal stability.  Specification 780,643 is referred to.ALSO:The invention comprises 2,6-dihydroxy-9-oxabicyclo(3,3,1)nonane (I) and its preparation by treating cyclooctadi-1,5-ene with aqueous hydrogen peroxide and formic acid at 0 DEG  to 100 DEG  C., more than 1 mole of hydrogen peroxide and not more than 1 mol of formic acid being used per mol of the diene.  (I) is characterized as the diacetate and ditosylate; it can be esterified with organic mono- or di-basic acids (the products being plasticizers for vinyl and cellulose polymers) or polymerized with dicarboxylic acids (the products being polyesters of high thermal stability (see Division C3).  Specification 780,643 is referred to.
Patent GB-844686-A (GB)
Title: Process for extracting oils from aqueous emulsions
Inventor: WOLF FRIEDRICH
IPC: B01J41/14
Filed: 1956-08-29
Abstract: An improvement in or modification of the process for extraction of oils from emulsions described in the parent Specification comprises passing the emulsion over a synthetic resin obtained by reacting a compound containing vinyl groups and heterocyclic nitrogen with a compound containing amino or imino groups and with a cross-linking agent.  The resin may be obtained by preliminarily cross-linking polyethylene imine with a quantity of epichlorohydrin insufficient to effect complete cross-linking followed by an addition of vinyl-pyridine and of further epichlorohydrin.  Alternatively it may be obtained by reacting vinyl-pyridine with polyethylene imine with the addition of epichlorohydrin, or by incorporating vinyl-pyridine by condensation in a polyethylene imine resin cross-linked with epichlorohydrin.  Specification 844,687 is referred to.ALSO:An improvement in or modification of the process for extraction of oils from emulsions described in the parent Specification comprises passing the emulsion over a synthetic resin obtained by reacting a compound containing vinyl groups and heterocyclic nitrogen with a compound containing amino or imino groups and with the use of a cross-linking agent.  The resin may be obtained by preliminarily cross-linking polyethylene imine with a quantity of epichlorohydrin insufficient to effect complete cross-linking followed by an addition of vinyl-pyridine and of further epichlorohydrin.  Alternatively, it may be obtained by reacting vinyl-pyridine with polyethylene imine with the addition of epichlorohydrin, or by incorporating vinyl-pyridine by condensation in a poly ethylene imine resin cross-linked with epichlorohydrin.  Specification 844,687 also is referred to.
Patent GB-661015-A (GB)
Title: Devices for continuous delivery of material such as tobacco to a container
IPC: A24C5/39
Filed: 1948-10-11
Abstract: 661,015. Cigarette-making machines. AMERICAN MACHINE DEVELOPMENT CORPORATION. Oct. 11, 1948 [Oct. 30, 1947], No. 26454/48. Class 130. [Also in Group XXX] A device for delivering a continuous stream of material such as tobacco to a container such as the hopper H of a cigarette-making machine, comprises a tube 10 having a delivery slot 12 extending over the hopper, an inner suction tube 20 and a tangential tube 14 through which air and tobacco are sucked to whirl around the inner surface of the tube 10 so that the tobacco forms a ribbon lining thereto. The tube 20, which is axial and adjustable, and the tube 14 are located at one end, and a baffle 28 extends over the slot 12 which has a rotating-gate delivery valve 34, 36. Suction air is supplied by a rotary pump 29, the supply being controlled by a valve 31. A centrifugal separator 72 ejects dust and sand to a bag 76. The tobacco is supplied by a belt T, driven by an electric motor 52, having a circuit which is controlled by a mercury-operated switch 100 which is moved by the tobacco in the hopper through arms 98. The tube 10 has further tangential tubes 16, 18 respectively, for the supply of a different kind of tobacco for blending, and to pick up overflowing tobacco through a mouth 110 and a flexible pipe 114 which may be moved as necessary. At starting a switch 126 enables the hopper to be filled before the switch 118 is operated to start the cigarette-making machine. Specification 475,593 and U.S.A. Specification 2,281,610 are referred to.
Patent GB-172433-A (GB)
Title: Improvements in and relating to overload electric switches
IPC: H01H75/04
Filed: 1920-09-16
Abstract: 172,433. Rogers, T. W., (Krupp Akt.- Ges., F.). Sept. 16, 1920. Electromagnetic switches; ratchet operation; protective arrangements.-In order to interpose an adjustable delay-action before the operation of an overload switch, the overload is caused to move the contact-arm of an electromagnetic relay step-by-step to the closed position, whereupon the overload switch is energized to open the circuit. If the overload ceases before the step-bystep relay closes, the relay returns to its initial position, and, if a very heavy overload occurs, the main switch is actuated at once. As shown applied to the overload protection of a motor D, an overload on the motor energizes the winding H of the step-by-step relay sufficiently to move the core G and propel the ratchet-wheel K one step, moving the contact-arm k<2> towards the adjustable contact k<5>, the ratchet wheel being held, against spring return, by a pawl p<2> held down by the core of the winding Q carrying the motor current. The movement of the core G separates contacts g<1>, g<2> and removes a short-circuit from the winding H<1>, which is equal and oppositely wound to the coil H. As a result the core rises again and, if the overload persists, the ratchetwheel is again moved on until, finally, the relay circuit is closed. If the overload ceases, the reduced current in the winding Q allows the pawl p<2> to be removed by its spring and the relay returns. A short-circuited damping winding J is provided on the.relay core. When the relay closes, the shunt coil C is energized and, acting additively to the series winding B, opens the overload switch. The main circuit is opened but the coil C remains excited through the resistance F, coils Q, H, and contacts g<1>, g<2>; this excitation is adequate to hold the switch open until the holding circuit is broken by a hand switch. In the event of a very heavy overload the coil B operates to open the switch at once.
Patent GB-389840-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/00
Filed: 1931-09-24
Abstract: 389,840. Automatic exchange systems. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, Liverpool. Sept. 24, 1931, No. 26691. Convention date, Nov. 14, 1930. [Class 40 (iv).] A holding arrangement at the outgoing end of a two-wire junction 76, 77, not provided with a repeater, comprises a thermionic valve 70 the grid of which is connected to the negative conductor 76. When the junction is not in use, negative potential through the upper winding of the incoming line relay 80 more than neutralizes the positive biasing battery 71 but when a calling loop is extended to the junction the drop in negative potential at point 78 causes the grid to become positive. At the same time relay 50 completes the A.C. filament circuit. Relay 65 in the anode circuit operates relay 55 to ground the incoming test wire and to look relay 50. Relays 65, 55 are rendered slow-releasing by shunt resistances to prevent release of relay 50 during impulsing. The valve filament is connected to the positive wire 77 through a high resistance 75 which prevents disturbance from .the A.C. source. If the earth potential at the two exchanges is substantially the same, the filament may be directly earthed over switch 72 and a common transformer 60 may be used.
Patent GB-296577-A (GB)
Title: Improvements in or relating to feed water heaters for locomotives
IPC: F22D1/42
Filed: 1927-10-08
Abstract: 296,577. Baldyzar, S. Oct. 8, 1927. Feedwater, heating. - In a locomotive boiler a feed-heating tube 19 passes across the firebox and delivers through the rear wall 7 into a water space 11 surrounding the firebox. Water heated therein is led to the forward part of the boiler, preferably through a series of curved pipes 14 connecting headers 12, 13. A fire arch can be constituted by a, series of transverse water-heating tubes 20.
Patent GB-171011-A (GB)
Title: Improvements in bottle stoppers fitted with means for delivering liquid in measured quantities
IPC: G01F11/12
Filed: 1920-09-18
Abstract: 171,011. Johnson, M. G. Crump-. Sept. 18, 1920. Fixed - chamber apparatus ; valve systems for ; with counting and registering apparatus.-Comprises a stopper for a bottle or liquid-container so constructed that the contents may be withdrawn in equal measures, the stopper ceasing to function after withdrawal of a specified number of measures. The parts are shown in the acting position, that is, where the bottle (not shown) would be inverted, and consists in the provision of inner and outer tubes 1, 2 carried by a plug 9 each fitted with liquid and air ports, the tube 2 being expanded at the lower end into a measuring-chamber 3 in which works a rotary valve 4. The tube 1 is made solid at each end, and at the upper end is threaded to engage an internal thread on the outer tube 2. This end of the tube 7 is also fitted with four ratchet teeth on a spring plunger 15 housed in a cap 13. Two diametrically opposite liquid ports 23, 24 and two air ports 26, 27 are formed in the inner tube, and are adapted to register with air and liquid ports 25, 22 respectively in the outer tube. The valve 4 has air ports 30, 31 and liquid ports 32, 33 adapted to register with air and liquid ports 35, 36 respectively in the chamber 3 over which takes a cap 5 with a delivery spout 37. The tube 1 towards the lower end is provided with two pairs of diametrically opposite slots through two of which passes a pin 43 connecting the valve 4 to rotate with the tube 1, but allowing the tube to slide longitudinally relatively to the valve. The liquid enters from the bottle through the ports 22, 23, displaced air from the container entering the bottle through air ports 25, 26, until the container and the tube 1 are full. A partition divides the tube 1 longitudinally. On rocking the tube 1 and valve 4 by a handle and ratchet through a right-angle, the ports in the tube are closed and the ports in the valve brought into register with ports in the casing 3 and the delivery spout 37. A counter is operated by a cam on the handle so as to register the number of measures withdrawn. The tube 1 moves upward at each actuation, until, when the maximum number of measures is delivered, a shoulder 12 engages a shoulder on the spring casing and locks the apparatus. The seal is then broken and the plug and parts withdrawn and re-set.
Patent GB-753583-A (GB)
Title: Improvements in devices for loading and ramming materials
IPC: B65F3/20
Filed: 1953-09-29
Abstract: 753,583. Packing material into refuse vehicle bodies and other chambers. SOC. SOVEL, VEHICULES ELECTRIQUES INDUSTRIELS. Sept. 29, 1953 [March 4, 1953; July 17, 1953], No. 26739/53. Class 78 (4). As a blade P moves in a closed path to push material from the floor 19 of a hopper into a main container its angle changes so that initially it tends to compress the material against the floor 19 while finally it is withdrawn from the material. As illustrated, the blade P rotates with a shaft 5 while its angle is varied by a crank 8 connecting it to a roller 39 running on a circular track 40 eccentric relatively to the shaft 5. The blade P has a curved rear surface 43 which is always in sealing contact with a projection 34 from the shaft 5. The material is retained in the main container by a biased screen 46 swung about its pivot 47 by the blade P as it passes. The roller 39 and track 40 may be replaced by an eccentric to which the crank 8 is pivoted. More than one blade P may be provided and the blades may be driven continuously or may be arranged so that they can be driven only when a flap closing the charging aperture 59 is closed. When the apparatus is mounted on a refuse collecting vehicle it may be driven directly from the engine of the vehicle or from a fluid-pressure piston motor supplied from a compressor driven by the engine of the vehicle, and the apparatus may be mounted on a rear door hinged so that it swings away from the main body when the latter is tipped to unload it.
Patent GB-497692-A (GB)
Title: Improvements in and relating to diaphragms for loudspeakers
IPC: H04R9/04
Filed: 1937-10-04
Abstract: 497,692. Diaphragms. MARGUERAT, R., and CHEVRIER, M. Oct. 4, 1937, No. 26819. Convention date, Oct. 8, 1936. [Class 40 (iv)] In a loud-speaker diaphragm comprising a diaphragm portion proper and a flange 2 for carrying a speech-coil moulded therewith, a shoulder 9 is provided between the diaphragm portion and the speech-coil flange to constitute an abutment for the location of a spider. The diaphragm has a flat peripheral portion 1 and a number of concentric corrugations 5 and is preferably made by the processes and apparatus described in Specifications 440,543 and 440,544, [both in Group V]. The Specification as open to inspection under Sect. 91 includes a construction, Fig. 3 (Cancelled), in which the centring spider 12 has an integral flange 11 carrying the speech-coil and a cylindrical portion 13 into which is fitted a cylindrical extension 2<1> of the diaphragm portion. The thickness of the diaphragm portion may decrease gradually from the apex to the periphery. This subject-matter does not appear in the Specification as accepted.
Patent GB-142403-A (GB)
Title: Improvements in or relating to fuel valves for internal combustion engines
IPC: F02M7/18
Filed: 1919-11-03
Abstract: 142,403. Brown, J. H., and Mellor, G. A. Nov. 3, 1919. Regulating.-A valve B' for controlling the flow of liquid fuel from a pipe A<1> towards a vaporizer has two adjustments, coarse and fine, relatively to its actuating-lever G. The valve is held away from its seat by a spring B<2> against a stop E which screws at D' into the spindle C; the stop has a milled head D and is held by a spring catch F; this forms the coarse adjustment. The spindle C is screwed in and out of the casing by a lever H which is rigidly attached to it, and is also connected to the free lever G by means of a screw K and compression spring K<1>, which form the fine adjustment. The lever G is connected by a link J to the mechanism that adjusts the air valve.
Patent GB-1065506-A (GB)
Title: Toy rifle
IPC: F41B11/14
Filed: 1965-06-25
Abstract: 1,065,506. Toy guns. W. L. STRAUSS. June 25, 1965 [July 2, 1964], No. 27029/65. Heading A6S. A toy rifle has a sliding bolt simulating a real rifle and cocks a piston. A bolt 27 with a bolt tube 26 and bolt handle 27a is rotated counter-clockwise, as viewed from the rear, and then withdrawn against the tension of a spring 25 anchored to a rivet 17 to simulate the operation of the bolt of a normal riflle. The righthand end of the tube 26, as viewed in Fig. 3, has a pair of inbent tags 26d which engage a disc 32 on the rear end of a piston rod 31 and draw the rod 31 back until it engages a notch 29c on a trigger lever 29, which is thus cocked under the tension of a spring 36 preparatory to firing.
Patent GB-1428887-A (GB)
Title: Pneumatic transducer for converting mechanical displacement of  responsive element into pneumatic signal
IPC: G01B13/00
Filed: 1974-06-18
Abstract: 1428887 Fluid-pressure servomotor systems GOSUDARST N I INST TEPLDENERGETICHE PRIBOROSTR 18 June 1974 [18 June 1973] 27056/74 Heading G3P A tranducer for deriving a pressure signal from a mechanical displacement of a control element, e.g. responsive to pressure, flow-rate or liquid level, comprises a relay 1, Fig. 3, having a supply pressure duct 2, an output pressure signal duct 3 and a pilot pressure duct 4. The relay is associated with a flow restrictor in the form of an ejector 5 which communicates directly with the ducts 2 and 4 and with a flapper-and-nozzle valve 6 via duct 16. The flapper 7 is moved by the control element (not shown). When the valve 6 is wide open the relatively-rapid flow through duct 2, ejector 5 and duct 16 creates a sub-atmospheric pressure in a chamber 13 and hence in a space 42 between a pair of metal diaphragms 29, 30. Thus the latter move towards one another whereby a valve 32 is opened by the action of adjustable leaf-springs 36 to permit atmospheric air to flow into space 39 and thence through passage 40 to space 38 and outlet duct 3. As the flapper 7 is moved towards the nozzle 8, the pressure within chamber 13 and space 42 increases and eventually exceeds atmospheric pressure whereby the diaphragms are moved away from one another resulting in closure of valve 32 and opening of valve 31 by an amount proportional to the position of the flapper 7 relative to the  nozzle 8. In an alternative embodiment, Fig. 1 (not shown),-the ejector is of spherical form and is located in a housing (12) seperate from that of a  relay (1). Another form of ejector is illustrated in Fig. 2 (not shown). Dimensions of some of the ducts and orifices are given in the Specification.
Patent GB-275829-A (GB)
Title: Improvements in trailers for use more especially with motor vehicles
IPC: B60P3/34
Filed: 1926-10-29
Abstract: 275,829. Brewer, J. L. P. F. Oct. 29, 1926. Caravans; folding vehicles. - A trailer which can be used as a caravan is adapted to be collapsed vertically so that the collapsed height is substantially that of an ordinary touring car. As shown, the trailer comprises two portions A. D the upper part D of which is adapted to telescope over the lower portion and is adapted to be raised and lowered by means of cables H passing over pulleys J, K and a shaft F rotatable by a handle. Means are provided for locking the upper part D in both its raised and lowered positions. Legs S are provided to support the trailer when detached from the touring vehicle.
Patent GB-911138-A (GB)
Title: Electrical two-part connector assembly with double locking device
IPC: H01R13/625
Filed: 1960-08-04
Abstract: 911,138. Two-part couplings. EPPRECHT, G. W Aug. 4, 1960 [Aug. 22, 1959], No. 27119/60. Class 38 (1). A mechanical double-locking system for a two-part connector comprises a main lock of the quick-action type such as a bayonet- or snap-in type and an auxiliary lock containing threaded parts or elements with helical or slanting or wedge-shaped surfaces so as to force the connector parts tightly together in their locked condition. Fig. 1 shows two connector bodies A and B containing co-operating coaxial contacts k and secured together by a main bayonet lock comprising pins b on part B fitting into grooves a in a nut c carried by part A, said nut being urged axially of part A by a spring f to draw the parts together. The auxiliary locking device comprises a nut e carried by part A and threading on to nut c so that when rotated it tightens the main lock. Since all auxiliary locking elements are carried by connector A, connector B may be of conventional design. Fig. 4 shows how the two locks may be actuated by moving only one element. A spring g engages grooves in nuts c and e so that when nut e is rotated, nut c follows the movement until the bayonet lock is closed, then nut e is turned with respect to nut c to close the auxiliary lock. Additional coupling by teeth or friction surfaces (Figs. 3a and 3b, not shown) may be used to ensure that nuts e and c cannot be turned with respect to each other as long as the connector bodies A and B are not joined. Thus the auxiliary lock may not be closed with the main lock open. Means may be included by which the position of the auxiliary lock can be felt or visualized. Fig. 2 shows another embodiment wherein the main lock comprises balls or rollers q which can be locked in engagement with a groove p in body B, or released therefrom by axial movement of a spring-loaded sleeve s carried by body A, the rollers being held captive between said sleeve and a further sleeve r carried by body A and through apertures in which the rollers can project. Auxiliary locking is effected by rotation of sleeve s, when in the main locking position, until threads t on the sleeves s and r inter-engage. The sleeve r has limited axial movement on body A so that tightening sleeve s draws the bodies A, B further together. A further embodiment employing a main bayonet lock is shown in Fig. 5. After engagement of said main lock an outer shell y is moved axially, so that wedge-shaped grooves therein force pins x, slidable in member c, into engagement with a conical collar u on body A thereby further drawing together the connector bodies. Both locks can be released by shell y.
Patent GB-695682-A (GB)
Title: Improvements in or relating to elevator control systems, embodying alternating current motors
IPC: B66B1/44
Filed: 1951-11-20
Abstract: 695,682. Control of A.C. motors. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Nov. 20,1951 [Jan. 17, 1951], No. 27199/51. Class 38 (iii) An A.C. motor for driving a lift car has control means for levelling the car at a selected floor including a time-delay relay the operation of which is initiated at a fixed distance of the car from the floor and which de-energises the motor with a fixed timedelay thereafter for one condition of loading, and additional control means responsive to a decreased value of load on the motor are operable to decrease the time-delay of the relay by an amount proportional to the decreased loading condition. As shown, the motor is of the three-phase squirrel cage induction type having stator windings a, b, c, which are connected to resistors 7 when a car switch CS is moved to start the lift in either direction, the resistors afterwards being removed upon operation of a time-delay relay Vt. Assuming that a fully-loaded car is travelling upwardly with the car switch centred for a stop, and an inductor relay which is carried on the car reaches a stationary inductor plate, the relay contacts DL will open to de-energize relay LD. Contacts LD2 will then open to permit charging of a capacitor C which forms part of a timing circuit, so that, ultimately a critical voltage is impressed upon the grid of a valve 40 and relay TS is energised to short-circuit the valve, stop the car, and apply the brake. With fixed values of the elements C and Rl the time element of the delay circuit is constant, and this provides satisfactory levelling operation when the car is fully loaded and moving upwardly. In order to condition the timing circuit for different values of the load a transformer T4 is provided having connections to transformers T1, T2, T3, so that its primary winding is energised at a voltage inversely proportional to the in-phase component of the motor current. For this purpose transformers T2 and T1 respectively provide a component which is proportional to the current in one phase of the motor supply and one which is in quadrature with the phase voltage and opposite in direction to the magnetising current of the motor, whilst transformer T3 provides a bias voltage opposing the phase voltage. The output of the transformers T1, T2, T3, may thus be adjusted to provide zero energisation of the transformer T4 when the car is fully loaded and moving upwardly, so that the normal period of operation of the timing circuit is unaffected. However, for other loads on the car an alternating voltage is induced in winding 50 which is added to the direct potential of the capacitor C to decrease the time required to fire the valve 40, the input to the transformer T4 being inversely proportional to the load on the car.