baber/WOPTO huggingface dataset:
Patent GB-390385-A (GB)
Title: Improvements in apparatus for obtaining connections in automatic telephony systems
IPC: H04M1/274
Filed: 1932-07-21
Abstract: 390,385. Impulse transmitters. BOY•, A., 9, Avenue de Villiers, Paris. July 21, 1932, No. 20642. Convention date, July 30, 1931. [Class 40 (iv).] In an impulse transmitter generating a continuous stream of impulses which is split up into the required digits by short-circuiting contacts controlled by toothed or cam members, the latter are in the form of two-part rings 9 pivoted at 21 and bearing internal teeth or projections which co-operate with a pair of short-circuiting. contacts 25 mounted to slide along and rotate with a central shaft 8. In the arrangement,' shown in Figs. 1 and 2, each ring represents a complete subscriber's number. The rings are mounted side by side, to form a cylindrical structure 17 each ring being fitted into slotted bars 23, 22, and held in position by a hook 24 uniting the heel members 9<1>. The contacts 25 are moved along the square shaft 8 into association with any particular ring by a handle 29 carrying a finger 29<1> co-operating with a groove 28. The shaft 8 is rotated through gearing from a shaft 2 during the return movement of a handle 3, the shaft 2 also driving the impulse cam 11. A member 15 sliding on a guide 16 and acted on by a cam 16<1> on shaft 2 normally holds cam 11 in the position shown. Electrical connection is made with the contacts 25 through rods 33<1>, 33<2>, which rotate with the shaft 8 and are formed at their ends as brushes engaging commutator segments 36, 37. In a modification, Fig. 6, three pairs of short-circuiting contacts 48, 49, 50 are provided as described in Specification 381,532, each ring being divided into three sections bearing respectively indications corresponding to an exchange code, and to two pairs of numerical digits. The contacts are positioned by sliders 38<1>, 38<2>, 38<3>, which may be set manually or by the shaft 2 under the control of push-buttons as described in the above-mentioned Specification. Connection is made to the contacts over inset bars 42a &c., provided with wipers engaging with fixed commutator segments which are staggered so that the pairs of short-circuiting contacts are connected up in succession. Infurther modifications, each three-section ring is replaced by three separate rings as in Specification 381,532.
Patent GB-148878-A (GB)
Title: An improved refrigerant
IPC: C09K5/04
Filed: 1920-07-10
Abstract: 148,878. Seaman, H. W., (Assignee of Crawford, A. G.). Feb. 5, 1918, [Convention date]. Refrigerating, compression machines and processes for.-A refrigerant for use in a compression refrigerating-system consists of a mixture of propane and butane, in proportion ranging from 60 to 15 per cent propane and 40 to 85 per cent butane.
Patent GB-1114593-A (GB)
Title: Teaching machine
IPC: G09B7/04
Filed: 1965-05-17
Abstract: <PICT:1114593/C4-C5/1> A multi-choice question and answer machine (see Division G5) includes a device for displaying a student's answer to a question, the device comprising an electroluminescent panel.  As illustrated the panel 72 is advanced by a rack-and-pinion transmission 79 each time the student causes one of the characters of his answer to be recorded in an answer store (Mr) (not shown). A coding device 71 indicates the angular position of a character wheel 47, and upon receiving a pulse b the coded angular position is transmitted to comparator C where it is compared with a signal from the answer store.  Upon there being co-incidence a pulse energizes a flash bulb which illuminates a character and projects it on to the panel.  In an alternative embodiment (Fig. 16, not shown), a luminous chart including characters from which an answer may be compiled is projected on to a screen, and a student indicates the characters of his answer by placing over the relevant characters a bunch of optical fibres which transmit the luminous images to an electroluminescent panel.
Patent GB-1287819-A (GB)
IPC: C07C319/14
Filed: 1970-04-30
Abstract: 1287819 4,4<SP>1</SP> - Dithiobis - (2,6 - di - t - butylphenol) SAGAMI CHEMICAL RESEARCH CENTER 30 April 1970 [30 April 1969] 20816/70 Heading C2C 4,4<SP>1</SP>- Dithiobis - (2,6 - di - t - butylphenol) is obtained by reacting 2,6-di-t-butylphenol with sulphur monochloride in a solvent, preferably in the presence of a catalytic amount of iron powder or a Lewis acid such as FeCl 3 , AlCl 3 , ZnCl 2 , TiCl 4  or SnCl 4 . Examples are given for the production of the compound.
Patent GB-666797-A (GB)
Title: Improvements in the fuel feeding of engines arranged at the ends of the blades of a rotary wing of an aircraft
Inventor: MORAIN PAUL
IPC: F02C7/232
Filed: 1949-08-10
Abstract: 666,797. Helicopters. SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES DE SUD-OUEST. Aug. 10, 1949 [Aug. 17, 1948], No. 20829/49. Class 4. [Also in Group XXIX] A valve for controlling the flow of liquid fuel to an engine, e.g. a reaction jet engine, disposed at the end of a blade of a. rotary-wing aircraft, e.g. a helicopter, the valve itself also being situated at the end of the blade, comprises a needle valve member 1, Fig. 1, closed by a spring 8 and opened by a controllable pressure of fuel from a conduit 15 acting on a. diaphragm 7 in opposition to the pressure of fuel from a. feed conduit 11 acting below the diaphragm. The valve is thus unaffected by variations of pressure in the conduits 11, 15 due to centrifugal force. In a modification, the connection from the feed conduit 11 to the lower side of the diaphragm is omitted and holes are provided in a partition 5 whereby the fuel feed pressure has access to the top of the diaphragm. The conduit 15 is connected below the diaphragm so that the valve is opened by a depression in the conduit 15 relative to the pressure in the feed conduit 11. The valve shown is incorporated in a system having a feed pump 19, Fig. 3, connected to the conduit 11 and an additional control pump 22 which receives fuel from the pump 19 and supplies it at a higher pressure to the conduit 15. The pump 22 is provided with an outlet valve which maintains an adjustable constant increment of pressure over that from the pump 19. A valve 30 may be operated cyclically, e.g. electrically, to vary the opening of the valve member 1 according to the position of the rotary wing. The delivery pressure of the pump 19 may be controlled according to the flow of air through the engine so that a given opening of the valve member 1 corresponds to a constant air-fuel ratio at all air flows. Thus, when the engine is supplied by a centrifugal supercharger in the fuselage of the aircraft, the discharge pressure of the pump 19 may be arranged to be proportional to that of the supercharger, and when the engine is an athodyd, the pump 19 may be a centrifugal pump driven by the rotor of the aircraft. The arrangement of Fig. 3 may be modified by providing a restriction immediately downstream of the pump 22 and incorporating an adjustable by-pass between the conduits 11., 15 in place of the outlet valve for the pump 22. When the valve 1 is controlled by a relative depression, the pump 22 is dispensed with and the conduit 15 is connected between restrictions 27, 28, Fig. 5, in a passage interconnecting the inlet and outlet of the pump 19, control of the pressure in the conduit 15 being effected by a valve 26. Control of the pump pressure in accordance with the air flow in this case requires a more complicated arrangement, e.g. using a cam, than the previously described systems.
Patent GB-222462-A (GB)
Title: Improvements in or relating to the synchronous transmission of several messages overone wire by means of alternating currents of different frequencies
IPC: H04L5/06
Filed: 1924-09-04
Abstract: 222,462. Lorenz Akt.-Ges., C. Sept. 24, 1923, [Convention date]. Drawings to Specification. Harmonic telegraphs; multiplex telegraphs; alternating-current systems.-Relates to systems employing currents of different frequencies to differentiate messages transmitted over a single line and in which each message is separated at the receiving station by a corresponding synchronized commutator adapted to commutate only current of that frequency. The number of messages which it is possible to transmit, when employing any particular range of frequencies, is increased by the use of a phase difference of 90‹ to differentiate two messages transmitted on the same frequency. The separation of these two messages at the receiving station is effected by the use of two commutators with a relative phase displacement of 90‹ or of a single commutator with two sets of brushes 90‹ apart. Systems using code elements distinguished from spaces by phase of alternating current.-The signalling may be effected by the use of coda elements distinguished from spaces by a phase displacement of 180‹, for which purpose (1) the polarity of the line terminals may be reversed by the movements of the transmitter key, or (2) the key may connect one pole of the line to one or other end of a potentiometer of which the midpoint is connected to the other pole, or (3) the key may connect the line to the primary or the secondary of a transformer having a ratio of one in one.
Patent GB-647928-A (GB)
Title: An adjusting device for shoes of brakes of the drum type
IPC: F16D65/56
Filed: 1945-05-28
Abstract: 647,928. Adjusting brakes. FARKAS, P. May 28, 1945, No. 20892/48. Convention date, Nov. 18, 1942. Divided out of 603,163, under which a Specification was laid open to inspection under Sect. 91 of the Acts, May 28, 1945. [Class 103 (i)] In brakes of the kind in which the shoes are interconnected at one end by means that transmits the braking'force acting on one shoe to the other or secondary shoe, means are provided for maintaining constant the clearance between the secondary shoe and the drum and for adjusting the shoes relatively to each other at their interconnection. As shown, shoes 22, 23 are expanded by means described in Specification 603,163 and comprising a pair of parallel bell-cranks 29 connected to the shoe 23 at 36 and at 37 to a pair of parallel links 30 which are pivoted to the shoe 22 at 35. The levers 29 are operated by a member 28 and a cable 33 in a sheath 12 which extends through the anchor-plate 20. The shoes anchor on an axially-extending upper part of a member 25 secured to the plate 20. Springs 39, 42 urge the shoe ends against the member 25 and into the forked ends 47, 48 of a pair of threaded rods 49, 50 screwed into a sleeve 51 having a polygonal part 52 extending freely through a polygonal opening in a gear-wheel 53 mounted in a fixed casing 24. The wheel 53 meshes with a wheel 54 on a shaft 55 having a squared part 56 by which it can be turned from the exterior of the brake drum to adjust the shoes relatively to each other. The outermost coil of a spiral spring 57 is held from movement by engagement in the periphery of a lenticular recess 58 formed in the casing 24 and the innermost coil frictionally grips the sleeve 51. Thus, assuming normal counter-clockwise rotation of the drum, if the movement of the shoe 23 in a brake application is excessive, the innermost coil of the spring engages the wall of the recess 58, the sleeve 51 being moved through this coil so that when the brake is released the shoe is returned by the spring a constant distance. In a modification, the spring 57 is replaced by a resilient annular disc, the inner edge of which engages in a groove in a collar which frictionally grips the sleeve 51.
Patent GB-1503940-A (GB)
Title: Microwave ovens
IPC: H05B6/80
Filed: 1975-05-16
Abstract: 1503940 Display devices MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 16 May 1975 [20 May 1974 6 Aug 1974] 20901/75 Heading G5C [Also in Division H5] In a microwave oven which has a single lamp 21 which serves to illuminate both the cooking chamber 2 and one or more indicating devices 12, 14, light guides comprising a bundle of optical fibres are provided between the lamp 21 and the indicating device 12, 14 and means are provided for controlling the illumination of the indicating devices 12, 14 depending on the operating mode selected for the oven. As shown, indicating device 12 is provided to indicate whether the oven has been selected to operate in a high or low energy mode and indicating device 14 is provided to indicate that the oven is switched on. A start button 13, depression of which causes closure of the oven start switch 24, has a plate-like extension 13a which extends into the gap between two light transmitters 39, 40 which transmit light from lamp 21 to indicating device window, 14. On depression of button 13 to close start switch 24 a window 41 in extension 13a is aligned with the ends of the light transmitters 39, 40 so that the indicating window is illuminated. In addition, two light transmitters 37, 38 extend between an indicating window 12 and lamp 21. A shutter is movable between a position 36a interrupting the passage of light from lamp 21 to window 12 and a position 36b allowing the passage of light from the lamp 21 to window 12. The shutter is actuated in response to the actuation of a switch which controls the magnitude of microwave energy. In the low energy position window 12 is illuminated whereas in the high energy position it is not illuminated.
Patent GB-257730-A (GB)
Title: Improvements relating to chucks for lathes and like machine tools
IPC: B23B31/163
Filed: 1925-08-20
Abstract: 257,730. Andrew, C. D., and Armstrong, Whitworth, & Co., Ltd., Sir W. G. Aug. 20, 1925. Chucks. - In a chuck for lathes and like machine-tools of the kind wherein the jaws are actuated by the rotation of a scroll or face cam relatively to the jaws -by power-actuated means, the scroll plate is providerl with peripheral teeth which may be engaged by either of two pinions f, g, Fig. 1, mounted equidistantly on opposite sides of the fulcrum e of a hand or foot lever d. The two pinions mesh together and the pinion g also engages a gear wheel h which may be rotated through worm-reduction gearing from an electric motor i In operation, the lever is actuated to engage one of the pinions f, g with the scroll plate and simultaneously close a switch l to start the motor, reversal of the direction of movement of the jaws being produced by engaging the other pinion with the scroll plate A one-way yielding clutch m is provided for giving a positive opening and a yielding closing movement to the jaws and the motor i may be replaced by a bolt or other power drive. A grease aperture for the scroll plate is closed by a plug p and tommy-holes are provided in the periphery of the scroll plate for hand adjustment of the jaws. In another form of construction the scroll ptate carries a brake drum acted upon by a band q, Fig. 3, hand or foot operated at r, and the opening or closing of the jaws is performed by rotating the chuck in the appropriate directions by the machine driving gear. Specifications 182,796 and 182,797 are referred to.
Patent GB-592890-A (GB)
Title: Improvements in and relating to structural members or bodies reinforced by structural elements
IPC: B28B23/00
Filed: 1944-10-26
Abstract: 592,890. Reinforced concrete &c. JACKSON, J. G. Oct. 26, 1944, No. 20909. Drawings to Specification. [Class 20(iv)] [Also in Groups VIII and XXIII] A reinforced structure, for example a beam, comprises a body of cementitous or plastic material capable of hard setting (such as Portland, magnesite and, lime cements, gypsum and plastics) reinforced by elements formed from fine drawn or blown glass fibres treated with a plastic medium which is relatively inelastic when set, such as a heat setting phenolic resin. The glass fibres may have projecting solid granular particles, which may be of a vitreous character, anchored thereto at spaced intervals to increase their anchorage in the embedding material and a group of fibres may be bonded together by the plastic medium to form a rod-like reinforcement element. The plastic medium may be set after incorporation in the cementitous or plastic material.
Patent GB-425864-A (GB)
Title: Improvements in or relating to coin-controlled mechanism for automatic vending machines
IPC: G07F5/26
Filed: 1934-07-17
Abstract: 425,864. Coin-freed article delivery apparatus. WITTENBORG, E., Seebladsgade, Odense, Denmark. July 17, 1934, No. 20952. Convention date, July 19, 1933. [Class 27] Articles stored in separate compartments. -The compartments are closed by doors 4 pivoted at 11 and coupled by links 9 to three - armed levers pivoted at 5. An arm 3 of each lever bears against a pin 2 on a coin-freed sliding bar 1 which normally prevents opening of the doors. Another arm 7 of each lever engages a sliding bar 10 adapted to pass between a row of locking members 14 which prevent simultaneous opening of more than one door. Coin-action, mechanical - connection and multiple coin ; coin-di8- charging mechanism.-The sliding-bar 1 is normally locked against movement by a pivoted catch 24 having a tooth 27 engagable with steps 28 on the bar. An inserted coin comes to rest between a pivoted lever and a screw 26 carried by the catch 24, the screw being adjustable to suit the required size of coin. An abutment 20 on the bar engages between arms 17, 18 of the lever 19, so that initial movement of the bar is transmitted through the coin to the catch 24 which is thereby swung clear of the steps 28. Continued movement of the bar causes further movement of the catch, and release of the coin, by engagement between a cam surface 29 and the tooth 27. In a modification, the bar 1 engages the lever 19 through a pin-and-slot connection. Filling storage receptacles.-Withdrawal of the cash receptacle permits a spring-urged lever to move catch 24 clear of the bar 1, so that the doors 4 may be opened for refilling.
Patent GB-1336761-A (GB)
Title: Roller assemblies
IPC: B65G13/00
Filed: 1971-04-19
Abstract: 1336761 Roller conveyers CONSTRUCTIONS MILLS K 19 April 1971 [5 Feb 1970] 20960/71 Heading B8A Bearings 7 for rollers 8 of a rollerway are gripped by tabs 4, 6 formed on the inner faces of flanges 2 of a U-section support. Projections 11 maintain the bearings in position. The bearings may be of nylon or metal and they may be other than circular.
Patent GB-1009706-A (GB)
Title: Electrostatic coating apparatus
IPC: B05B5/04
Filed: 1962-05-31
Abstract: 1,009,706. Spray-producers. RANSBURY ELECTRO - COATING CORPORATION May 31, 1962 [May 31, 1961], No. 21008/62. Heading B2F. Spray charging apparatus receives coating material from a source of supply 35 and is formed of electrically insulating material comprising a disc 14 with an outwardly presented surface and a discharge edge 18b, the disc carrying within it an electro-conductive element 20 adapted for operative connection to a high voltage source 29, and the apparatus has means, including a nozzle 34, whereby coating material is supplied to the surface of the disc whence it is brought into contact with the element 20 and is discharged from the edge 18b as a charged spray. The disc carries a pair of insulating rings 15, 16 and the element 20 may be applied to the ring 15 as a coating comprising particles of finely divided carbon in a thermosetting resin binder, being thus sandwiched between the rings 15, 16. The disc 14 is rotatable through a shaft 39 from a motor, enclosed in a housing 57, and the disc 14 is joined, by insulating pins 32, to a rim 12 to which the ring 15 is cemented. The rim 12 has an annular trough 24 to receive coating material from the nozzle 34 and, on rotation, the material passes along a sloping wall 30 to the coating-delivery face of the ring 15. The outer rim of the ring 16 is shaped into an annular rib 18 which acts as a dam to feed coating material uniformly to the sharp edged periphery 18b under centrifugal force. At the edge of the ring 15 the coating material comes sufficiently close to the periphery of the element 20 to become charged by the high voltage thereon which is impressed by a brush connection 37. The material is thus discharged from the edge 18b as a spray of finely divided electrically charged particles. A rib 65 on the driving coupling 47 prevents the spraying disc from falling off when inverted. The conductive element 20 may be two concentric rings of electrically conductive coating material interconnected by radial wires. Specification 865,765 is referred to.
Patent GB-125912-A (GB)
Title: A Combined Life Guard and Shields for the Front Wheels of Motor Omnibuses and the like.
Inventor: WICKS WILLIAM JAMES
IPC: B60R21/34
Filed: 1918-12-17
Abstract: 125,912. Wicks, W. J. Dec. 17, 1918. Wheel guards and safety appliances. - Relates to life-guards for motor and like vehicles of the type comprising a central cradle C and shields B' partially surrounding the front wheels and adapted to follow the turning movement of the wheels. According to the invention, each wheel-guard B' is connected to the cradle by means of upper and lower sets of pivoted links E', F<1> and E<2>, F<2>, so that the spaces between the cradle and wheel-guards are always bridged. The, fixed pivots e<1>, e<2> of the links E<1>, E<2> consist of spring ball-and-socket joints, and are connected to the horizontal arms b<1>, b<2> by which the wheel-guards are connected with the steering-arms, and the fixed pivots of the links F<1>, F<2> are connected to spring- controlled collars h<1>, h<2> movable on vertical rods H<1> attached to the cradle, which is itself adjusted to rock about a transverse bar c.
Patent GB-843456-A (GB)
Title: Packaging machines and method of packaging
IPC: B65B25/20
Filed: 1958-07-02
Abstract: 843,456. Cutting and seaming webs. E-Z PACKAGING CORPORATION. July 2, 1958 [March 17, 1958], No. 21203/58. Classes 31 (1) and 42 (1). [Also in Groups XVI and XVII] A machine for enclosing articles in a longitudinally-doubled web and sealing and severing the web transversely on each side of an article to form about it an open-topped bag comprises a heated sealing and severing blade having above and below it parallel clamping blades. Articles are placed in a guide 120 (see Group XVII), about which the web travels, and rest against a previously-sealed end, the weight of the article drawing the web between the sealing and severing means. These comprise a resilient pad 146 against which the web is flattened by blades 134, 136, the pad and blades being mounted on slides movable towards each other by lever linkage 180, 191, 200, 203. The cutting and severing blade 156 moves initially with the blades 134, 136 and then advances slightly to perform its function. The lever 180 is yieldably operated by a pneumatic motor 220. The pad 146 may be of foamed plastic having a facing strip of silicone rubber.