baber/WOPTO huggingface dataset:
Patent GB-293739-A (GB)
Title: Improvements in, or relating to, lift safety devices
IPC: B66B13/20
Filed: 1927-03-19
Abstract: 293,739. Coates, A. F. March 19, 1927. Lift cages and doors, locking and unlocking and operating. -Lift door locking devices of the kind in which a horizontally pivoted controlling bar arranged below the top of the door and normally holding it closed, while being raised above the door when it is opened, have the horizontal portion of the controlling bar arranged between the pivotal axis of the bar and the door. As applied to swinging well doors 1, 2, the controlling bar 3 is carried by arms 4, 5 at its ends mounted on pivots 6. A hinged arm 6', Fig. 4, mounted on a pivot 7<1> in the lintel has a slot 8 engaging the controlling bar 3 and a tooth 9 engaging a projection 10 on a bracket mounted on the door. When the door is opened the projection 10 pushes up the arm 6<1> and so raises the bar 3 above the top of the door. The upward movement of the bar 3 about its pivot 6 causes a second arm 12 carrying a bridging contact 14 to open a switch 16 in the electrical circuit of the lift. To allow the door to be opened, a third arm 18, normally locked by a lever 19, is first freed by a ram 21 on the cage engaging a shoe 20 connected by a spring-pressed rod 22 to the locking door 19. To maintain the controlling bar 3 above the doors, the arm 5, Fig. 7, has a second arm 33 with a recess 39 adapted to engage a spring-pressed catch 35 when the bar is raised. A modified bar operating device comprises a bracket 28, Fig. 10, mounted on the door and having a recess 31 for engaging the bar 3 and a roller 29 for operating it. As applied to sliding doors, the bar 3, Fig. 13, has an inclined cam slot 42 within which engages a roller 43 on one half door 49, the other half door 48 carrying a stud 53 normally abutting against a stop ledge 50. When the door 49 is opened the roller 43 acting on the cam slot 42 raises the bar 3 so that the stud 53 is free of the stop 50 and the door 48 can be opened, the stud sliding in a slot 51 in the bar. The invention can be applied to cage doors. Specification 261,828 is referred to in the first Provisional Specification.
Patent GB-613005-A (GB)
Title: Navigational system
IPC: G05D1/02
Filed: 1943-05-13
Abstract: 613,005. Automatic control systems for aircraft &c. WARNER, L. A. May 13, 1943, No. 7657. [Class 38 (iv)] Steering.-A navigational system for aircraft, but of general application, which is stated to be an improvement upon the system described in Specification 568,236, has means associated with a radio-transmitting station and directional and non-directional antennµ on the craft, whereby a " crab-angle course " may be set to compensate a drifting tendency and means whereby leeway is corrected and the craft returned to a predetermined radial course to or from the transmitting station, the latter correction being prevented until the crab-angle course has been set and being automatically replaced by control according to the crab-angle course to check yaw when the predetermined radial course is reached. The directional antenna'10 is maintained in a null-reception condition by the relay 15 and reversible motor 21, an electromagnetic clutch 26 being energized when the motor is operative so that with a gear lever 70 set in one of its extreme positions the resistance elements 78, 79 of a compasscontrolled device 35 will be moved from a normal course-determining position to a greater extent than the course change due to drift and thereby determine a " crab-angle course." The output of the device 35 energizes a relay 33 controlling the rudder and a yaw indicator 39, but the circuit of these is interrupted at contacts 30, 31 when the antenna motor 21 is operative. The relay 33 is also subject to the output of an " off-radial corrector " 95 which comprises rotatable resistance elements 80, 81 coupled to the antenna 10, and compasscontrolled contactors 82, 83 which may be oriented at will by energizing a clutch coil 91 and manipulating a handle 34a with the gear lever 70 in its mid-position to select a desired radial course. The outputs of the devices 35 and 95 are opposed across the circuit containing the relay 33 and adjustable resistances 99, 100 determine the magnitude of the output of the device 95 ; the arrangement is such that if leeway occurs the latter supersedes the effect of the device 35 until the desired radial course has been regained. The operation of the antenna motor 10 is suspended when the outputs of the devices 15 and 35 disagree by the operation of a relay 75. The gear lever 70 gives a 1: 1 ratio in its mid-position and a 1: 2 ratio in its extreme positions which provide for control in respect of a transmitting station ahead or astern of the craft respectively. Specifications 517,861 and 617,862, [both in Group XL], also are referred to.
Patent GB-824776-A (GB)
Title: Electric heating and cooking device
IPC: H05B1/02
Filed: 1956-03-12
Abstract: 824,776. Electrically heated vessels. SUNBEAM CORPORATION. March 12, 1956 [Sept. 23, 1955], No. 7690/56. Class 39(3) [Also in Group XXXVII] A vessel 16 for boiling water for tea and coffee making has a high wattage heater 20 and a low wattage heater 21 attached to its base 16a, and a bimetallic element 26 within a cup-shaped housing 27 extends into the vessel and controls switches 40 and 41, Fig. 8, at predetermined temperatures. The arrangement is such that the heater 20 is first connected to the supply 47, 48 and heats the water to near boiling point very rapidly, whereupon the bimetallic element opens switch 41 and places the heaters in series, and heating to the boiling point is accomplished without excessive steaming and bubbling. The switch 40 is opened and the supply to the heaters cut off if the temperature rises substantially above boiling point, e.g. if the vessel should boil dry. The heating elements are in the form of concentric rings and are preferably of the type comprising a helical resistance within and insulated from an outer metallic sheath. One end of the bimetallic element is secured to the housing 27 and the element is shielded from the heaters by a stainless steel cup 37, although when the switch 41 has been broken and the heater 21 brought into the circuit the heat therefrom prevents closure of the switch 41. An indicating light 70 is connected across the main heating element 20 and goes out when the switch 41 is broken. Switch operation and construction. The switches 40; 41 are mounted on an insulating plate 44 within a housing 18 at the vessel base, and comprise fixed contacts 40b, 41b and movable contacts 40a, 41a on leaf springs 54, 55. The latter are secured at one end to a metal bracket 52 and their opposite ends contact insulated actuating buttons 34, 35 at the movable end of the bimetallic element 26. To provide adjustment of the temperatures at which the switches operate, each switch is associated with a screw 66. Fig. 9, which has a conical part 66b which engages a protuberance 63a on the normally fixed contact. support 63 of the switch so that by turning the screw the normally fixed contact may be adjusted relative the movable one. The housing 18 has openings to provide access to the adjusting screw.
Patent GB-820478-A (GB)
Title: Process for the introduction of carboxyl groups into heterocyclic compounds
Filed: 1958-03-11
Abstract: Pyridine carboxylic acids are prepared by heating pyridine at above 350 DEG  C. in the presence of carbon dioxide and an acid-binding agent.  The acid-binder may be alkali or alkaline earth metal carbonates, bicarbonates, formates or oxalates and the reaction preferably takes place at elevated pressure in the presence of water-binding agents such as metal carbides, aluminium or excess potassium carbonate and the known heavy metal catalyst and inert solids of large surface area.  The reaction is carried out under conditions to prevent caking of the reaction mixture and the resulting salts may be acidized with organic or inorganic acids or converted to other derivatives.  In the examples, pyridine 2,5-dicarboxylic and 2,4,6-tricarboxylic acids are prepared.
Patent GB-564495-A (GB)
Title: Improvements in or relating to vacuum control means
IPC: F04F5/52
Filed: 1943-05-17
Abstract: 564,495. Medical &c. ejectors. TALLEY, H. A. E. May 17, 1943, No. 7801. [Class 71] [Also in Group VI] Fluid under pressure is supplied through a pressure regulator B to a jet D and venturi tube E having a connection D to a patient or apparatus required to be put under vacuum treatment, gauges C, G being provided, the gauge C indicating the pressure of supplied fluid and the gauge G indicating the reduced nozzle pressure and the vacuum obtaining in the venturi tube.
Patent GB-370609-A (GB)
Title: Improvements in or relating to the formation of moulds for casting metals
IPC: F28D1/02
Filed: 1931-03-13
Abstract: 370,609. Making radiators. WADE, H., 111, Hatton Garden, London.-(Gurney Foundry Co., Ltd. ; 4, Junction Road, Toronto, Canada.) March 13, 1931, No. 7846. [Classes 83 (i) and 83 (ii).] Moulds ;cores ; chaplets.-A mould, for casting a hollow body or bodies with transverse fins, such as the tubes 3, Fig. 1, of radiators, with closely spaced ribs 7, has cores 8, Fig. 3, to produce the tubes 3 and headers 4, Fig. 1, and core sections 12 of baked sand which may be separated by metal spacers 15, Fig. 9, or by enlarged ends 13, 14 which engage corresponding prints 10, 11, Fig. 4, in the mould halves. Small core sections 16, Fig. 3, are used between the cores for the tubes 3 and bosses 6. If there is to be only one tube 3, arranged centrally, the core segments are U-shaped as shown in Fig. 8.
Patent GB-385265-A (GB)
Title: Improved remote indicator for measuring variations in the level of liquids
IPC: G01F23/26
Filed: 1931-03-13
Abstract: 385,265. Electric signalling systems. SOC. D'ETUDE DE DISTRIBUTEURS AUTOMATIQUES (S.E.D.A.), 22, Rue d'Athenes, Paris.-(Assignees of Tribout, A. M. L. ; 48, Avenue Charles Floquet, Paris.) March 13, 1931, No. 7865, Convention date, March 13, 1930. Void [Published under Sect. 91 of the Acts]. [Class 40 (i).] The level of liquid in a reservoir, particularly one of a large fuel park, is measured at a distance by -the resonance frequency of a tuned circuit having an element varied by the liquid level. The variable element is preferably a condenser, which may consist of spaced metal plates 6, Fig. 2, the capacity being varied as the liquid rises between them. They may be shaped to give a reading directly proportional to the quantity of liquid. In another arrangement, Fig. 4, a pivoted float 19 acting through a link 22 varies a sliding-plate condenser 18, which is out of reach of the liquid. Alternatively the spindle of a rotary-plate condenser may be adjusted by gearing actuated by a. float and chain. The condenser 23, Fig. 5, is in circuit with a self-inductance 25 located at the indicating station. An exciting circuit comprises a battery 27 and interrupter 28, the winding 31 of which is short-circuited by a resistance 32, and an inductance coil 33. The frequency is measured by another circuit 34 including a fixed inductance 35 and a variable condenser 36. A heterodyne circuit 37 may be superposed on the circuit 34 to effect operation of an audible device 39, or a visible indicator. The system may include recording means.
Patent GB-569652-A (GB)
Title: Improvements in fuzes for projectiles
IPC: F42C15/26
Filed: 1940-05-03
Abstract: 569,652. Projectile fuzes. TEMPLE, G., and CURTIS., S. J. May 3, 1940, No. 7986. [Class 9 (i)] A direct-action percussion fuze comprising a two-part centrifugal shutter c, d retained by a sleeve which sets back on discharge has a detonator pellet h which moves axially backwards during flight and is locked in the space previously occupied by the shutter to complete the detonation strain. When the pellet h moves backwards under the action of a spring k, a two part collar i enters a recess l to lock the pellet and prevent its forward displacement on impact. The shutter parts c, d are shown completely separated in Fig. 5. The part c has a groove c<1> which, in the position of Fig. 1, provides a channel for the liberation of gas if the lead azide train in the passage h<1> is prematurely fired by the shock of discharge.
Patent GB-446996-A (GB)
Title: Improvements in or relating to hair curlers
IPC: A45D2/14
Filed: 1935-03-15
Abstract: 446,996. Hair - curling appliances. JARRETT, RAINSFORD, & LAUGHTON, Ltd., and LAUGHTON, G. A., Alexandra Works, Kent Street, Birmingham. March 15, 1935, No. 8016. [Class 131] In a hair curler of the type consisting of a tubular barrel a whereon the hair is coiled the end of the hair is secured to the barrel by an ordinary resilient hair grip i one limb of which passes through one or more guides g formed in the inner surface of the barrel and the other (preferably slightly curved) lies against the outer wall of the barrel. The guide may be formed by depressing the wall of the barrel. A retaining loop c, of wire, may be pivoted to the barrel and furnished with a rubber roller e to engage the end thereof.
Patent GB-1187199-A (GB)
Title: Piston for Rotary Piston Machines.
IPC: F02B55/02
Filed: 1969-02-14
Abstract: 1,187,199. A rotary-piston machine. NSU MOTORENWERKE A. G. Feb.14, 1969 [Feb.16, 1968], No.8053/69. Heading F1F. A piston for a rotary-piston machine such as a rotary-piston I. C. engine or compressor which is free to slide axially on a rotatable eccentric within a housing, includes on at least one of its end walls a recess 3 mounting a wear-taking and locating insert 4 so that its face 5 is slightly proud of the end face 1 of the piston and displaced from the piston axis to limit axial movement of the piston and prevent wear occurring on the piston. The insert may be made of a carbon composition, sintered bronze or other porous sintered materials impregnated with lubricant. The invention is applied to the piston of a rotary-piston internal combustion engine of Wankel type with inserts located at each piston corner on both end faces of the piston. The inserts can be easily replaced when wear does occur.
Patent GB-179377-A (GB)
Title: Improvements in gasket joints for various purposes
IPC: F16J15/10
Filed: 1921-03-15
Abstract: 179,377. Trafford, A. March 15, 1921. Joint-making packing. - A jacket joint shown as applied to a motor-car license-holder, comprises a resilient packing-ring b held tightly between the glass front c and the back a, the contacting surface of which has concentric grooves or channels a' which form a damp-proof joint and at the same time prevent creeping or displacement of the packing-ring b when the front cover d is screwed on to the back a. A second packing- ring e may be used between the front c and the cover d, the contacting surface of which may have concentric grooves similar to those in the back a.
Patent GB-558014-A (GB)
Title: Improvements relating to lathes
IPC: B23B5/00
Filed: 1942-06-12
Abstract: 558,014. Lathes. SMITH, W. H. June 12, 1942, No. 8070. [Class 83 (iii)] A vertical hollow spindle lathe has forming and parting tools carried on pivoted arms operated by cams on a shaft parallel to the spindle. The spindle, driven by a pulley 2, is connected to the camshaft 8 by worm gears 10, 12. The camshaft carries cams 15, 16 operating levers 22, 23, which, through adjustable screws 24, 25, actuate tool-carrying arms 19, 20, return movements being effected by a compression spring 21 connecting the tool arms. The lower arm carries an adjustable stop screw 26 on to which the bar A is fed by gravity when the collet 6 is opened by the sliding of a cone 30 by cam and lever mechanism 29.
Patent GB-198650-A (GB)
Title: Improvements in or relating to windshield cleaners
IPC: B60S1/34
Filed: 1923-03-21
Abstract: 198,650. Stewart, F. W. May 31, 1922, [Convention date]. Windows and the like, cleaning.-A motor-driven cleaner for windscreens is provided with means whereby the pressure of the squeegee upon the glass may be adjusted while the cleaner is operating. The motor is enclosed in a casing 39 fixed to the framing 10 of the screen 11 and comprises metal cups 16 the mouths of which are closed by rubber diaphragms 17 secured by bands 18. The diaphragms are connected by a plate 19 the middle portion of which is formed as a rack 20 and which has extensions 21 sliding in guides on the casing. The device is operated by suction from the engine through valve mechanism 24 so that the plate 19 is reciprocated, thus rocking a pinion 25 in mesh with the rack 20 and fixed to a tube 26 carrying slidably a square rod 29 on which the squeegee 32 is fixed. A spring 33 surrounds the horizontal portion of the rod 29 and tends to move the squeegee away from the screen, while the end 35 of the rod is threaded and takes a nut 36 bearing on the end of the tube 26 so that the pressure upon the glass may be adjusted. A groove 37 on the nut fits on a pin 38 on the end of the tube 26 to prevent the nut loosening; this pin may also be used to turn the wiper by hand. Two or more squeegees may be driven from the motor by providing a reciprocating plate with the requisite number of racks. Specification 205,043 is referred to.
Patent GB-113977-A (GB)
Title: Improvements in the Manufacture of Files.
Inventor: DENLEY WILLIAM HENRY
IPC: B23D73/00
Filed: 1916-06-08
Abstract: 113,977. Denley, W. H. June 8, 1916. File and rasp cutting. -In cutting files of varying cross section by rotary milling-cutters, the cutters are guided in their movement relatively to the blanks by a former. In one arrangement the blanks and formers having the same shape are mounted on the central and outside ridges respectively of a slide 2 which is intermittently advanced by a screw on which is mounted a ratchet 26 rotated from a crank on the shaft 24. Three sets of driven cutters 20 and rollers 23 to engage the formers are carried by bars 6 mounted in arms 7 which are rocked by cams 13. The bare are pressed down by adjustable springs 11 and the pressure of individual cutters is regulated by adjustable springs 17. In a modification, the file blanks 41, Fig. 9, are mounted on a carrier 40 which is rotated by gearing 50, 48, 64, Fig. 6, while acted on by rotary cutters 45 carried by transverse slides 46 which are moved under the influence of a rotating former 44. The blankholder 40 and former 44 are carried in a frame 53 which is advanced intermittently by a screw 52, a pawl and ratchet 57, a cam 60, and a spring 61. If the cuts are to be made at an angle as shown, the holder 40 is advanced during the cut by engaging inclines 72, Fig. 10, on the bracket 69 and on a collar 70 of the holder. When the cutters are not acting, the inclines pass their highest point and the holder is returned by a spring 73.
Patent GB-906854-A (GB)
Title: Improvements in or relating to the flocculation of slimes
IPC: B03D1/016
Filed: 1961-03-06
Abstract: A precipitant for slimes comprises an acid-soluble polyamide produced from a polymeric fat acid and an excess of a polyamine H2NR (NHR)n NH2 where R is alkylene and n = 1 to 6.  The polyamide may be used as a solution or dispersion in acetic, hydrochloric or sulphuric acid.ALSO:Mineral slimes of quartz, bentonite, kaolin iron ore and talc are flocculated by adding an acid soluble polyamide which is the reaction product of a polymeric fat acid and an excess of a polyamine H2NR(NHR)nNH2 in which R is alkylene and n=1 to 6.
Patent GB-385798-A (GB)
Title: A drying pole or support for sheet material
IPC: D06F53/04
Filed: 1932-03-18
Abstract: 385,798. Drying- supports. KUIJK, G. J. H. VAN, 174, Thomsonlaan, The Hague. March 18, 1932, No. 8126. Convention date, March 19, 1931. [Class 34 (ii).] A drying-pole, for use in drying leather, indiarubber, and other sheet material, consists of a long and narrow cylindrical cage formed of wires or metal rods bent and secured together at the ends as shown in Fig. 1. Loops c, Fig. 2, may be formed in the wires, which by contact with one another increase the rigidity.
Patent GB-398551-A (GB)
Title: Improvements in devices for delivering tickets from rolls
IPC: G07B3/02
Filed: 1932-03-18
Abstract: 398,551. Ticket-delivery apparatus. ROSS, M., 1, Riemergasse, Vienna. March 18, 1932, No. 8136. Convention date, March 18, 1931. [Class 106 (iii).] A ticket-roll container comprises a plurality of ticket-roll carriers each provided with an upright front plate with a protruding end by means of which it can be inserted in a support. Each carrier comprises an upright front plate a provided with a side wall c having a tubular pivot d for the ticket roll k and with a delivery nozzle b. The side wall c prevents lateral displacement of the ticket roll. The carriers are held in the casing l bv means of the ledge g, bevelled ledge h, the hinged or detachable and preferably padlocked plate i, and ledge f, all provided on the casing l. The ledges g, h can be formed by grooving a solid piece of material, and the ledges g, h may be arranged at the top with the plate i and ledge f at the bottom of the casing l. When it is not necessary to padlock the ticket-roll carriers they may be mounted in a slit in a stand e, Fig. 4.
Patent GB-697900-A (GB)
Title: Flame supervisory equipment, especially for comparatively strongly luminous flames
IPC: F23Q5/00
Filed: 1952-03-31
Abstract: 697,900. Magnetic amplifiers. LANDIS & GYR AKT.-GES. March 31, 1952 [April 5, 1951], No. 8170/52. Class 40 (iv). [Also in Group XL (b)] In a magnetic amplifier for amplifying the output of a photo-cell 1 for supervising the operation of a furnace through a control relay the cell which is of the barrier layer type develops a current in the control winding 3 of the amplifier. The amplifier is of the selfsaturating, self-magnetizing type. The control relay 5 is connected between the centre-point of a transformer secondary 10 and the load windings 11 in series with rectifiers 12, the load windings being fed from opposite ends of this secondary. A biasing winding 17 is fed through a rectifier 16 from one end of the transformer secondary. Relay 5 is given a snap-action by means of a feed-back winding 19. Condensers 4, 41 protect the cell from surges induced in the amplifier windings by sudden changes of light.