baber/WOPTO huggingface dataset:
Patent GB-470971-A (GB)
Title: Improvements in or relating to apparatus for the reproduction of sound in cinemas
IPC: H03G3/00
Filed: 1936-02-25
Abstract: 470,971. Automatic control systems. BAUER GES., E. Feb. 25, 1936, No. 5575. Convention date, Feb. 25, 1935. [Class 38 (iv)] [Also in Group XXXIX] The volume of electrically reproduced sound in a theatre is regulated by using the output of one or more microphones in the auditorium to control the transmission level of the reproducing system. The output of microphone 7 is amplified at 9 and controls relays 11, 12, the normally open contact of 11 being closed to prepare the control circuits only if a predetermined minimum is exceeded. Relay 12 controls the position of a pair of contacts 14, 15 between contacts 17 .. 20 in current reversing circuits controlling a motor &c. 23, which drives a volume control potentiometer 24 in one direction or the other when predetermined upper or lower limits are reached. To avoid leaving the transmission at a high level when the sound has diminished beyond the minimum value for operating 11, the motor or potentiometer may automatically restore the transmission to a medium level. Further, to prevent levelling out of peaks and troughs, relay 12 may be slow-to-operate or a lost-motion device may be inserted between the motor and potentiometer. Increase and decrease of volume may be controlled by separate relays ; and the functions of relays 11 and 12 may be combined in a single relay. Better regulation may be obtained by giving the potentiometer a step-by-step movement by using a self-interrupting motor circuit, a separate interrupting relay, or a Tirrill regulator. Gas discharge relays may replace the electromagnetic relays.
Patent GB-486981-A (GB)
Title: Improvements in grinding or abrading machines
IPC: B24B49/18
Filed: 1937-02-24
Abstract: 486,981. Grinding. JONES & LAMSON MACHINE CO. Feb. 24, 1937, No. 5591. Convention date, Feb. 24, 1936. [Class 60] A machine for grinding screwthreads &c. having a traversing work-table and an adjustable grinding wheel and trueing means therefor arranged as described in Specification 346,743 is provided with means independent of the trueing- device feed for feeding the wheel into the work to a predetermined extent. The machine comprises a base 1, carrying the work-table 2 and a transversely movable slide 5 on which the grinding-wheel 6 is angularly adjustable, the wheel being trued by a device 8 carried by a slide 7 movable on the slide 5 ; the slides 5, 7 are moved respectively by screws 17, 10 geared together at 15, 16, and arranged so that any advance or retraction of the slide 5 on the base 1 is accompanied by an equal movement of the slide 8 on the slide 5, whereby the operative part of the grinding-wheel remains in a given plane in spite of reduction of its diameter due to trueing. The screw 17 is driven, through gearing 20, 21 by a shaft 19 and engages a slide 18 movable on the base 1, being held by a spring acting on the slide 5 against the end of a shaft 30; the slide is movable by a lever 22 to withdraw the wheel 6 from the work during the return traverses thereof. Feed of the wheel into the work is brought about by step-by-step retraction of the screw 30, which is rotatable in a fixed nut 41 and carries a ball 42 to contact with the slide 18, the screw being rotated through gearing 45, 46 by a ratchet-wheel 55 actuated by a pawl 54 carried by an arm 52 rotatable on the hub 50 of the gear 46, and oscillated by a rod 77 connected to a crank-pin 75 adjustably carried by an arm 70. The arm 70 is mounted on a rock-shaft 71 moved by a cam 72 on a cam drum 25, the arm 70 having therein a screw 79, which engages a cam disc 60 clamped on the hub 50 and having two portions 61, 62 of different radii, so that as the portion 62 of larger radius moves under the screw 79, the feed of the wheel 6 is reduced ; feed is stopped by a shield on an arm 67 adjustably mounted on the hub 50. The shaft 71 also carries an arm 84 connected by a link 83 to an arm 80, on a shaft 100, carrying a pawl 81 which, through ratchet and spur gears 82, 101, 102 rotates the shaft 19 step-by-step, thus feeding forward the slides 5, 7. The feed may be stopped by an adjustable shield 85 on the ratchet wheel, and the point at which trueing of the wheel 6 commences is determined by the initial spacing of the trueing-device from the wheel.
Patent GB-267491-A (GB)
Title: Improved process for obtaining metal hydroxides free from iron, by means of basic substances, from metal salt solutions containing iron
IPC: C01F7/34
Filed: 1927-02-28
Abstract: 267,491. Lederer, O., Stanczak, W., and Kassler, H. March 9, 1926, [Convention date]. Aluminium, chromium, and titanium sulphates and hydroxides; hydroxides of metals in general.-Solutions of metal salts containing iron are treated with a basic substance, such as an alkali hydroxide or carbonate, ammonia or lime, in the presence of hydrogen sulphide, or with a basic substance, such as ammonium sulphide, which splits off hydrogen sulphide, whereby the iron present remains in solution as sulphide, and a basic salt of the metal free from iron is precipitated, from which the hydroxide may be obtained by hydrolysis, if desired under pressure. The solution is maintained slightly acid throughout the precipitation. In treating, for example, a solution of aluminium, chromium, or titanium sulphate, a basic sulphate corresponding to the formula M2O3.SO3.xH2O is precipitated. The Specification as open to inspection under Sect. 91 (3) (a) describes the use of crude gas liquor as a carrier for the hydrogen sulphide, also precipitation by hydrolizing the salt solution in the presence of sufficient hydrogen sulphide, whilst the maintenance of acidity of the solution is not an essential feature. This subject-matter does not appear in the Specification as accepted.
Patent GB-1375841-A (GB)
IPC: F02D1/12
Filed: 1971-03-01
Abstract: 1375841 Fluid-pressure servomotor systems C A V Ltd 11 Feb 1972 [1 March 1971] 5671/71 Heading G3P A governor for a fuel injection pump comprises a valve member 27 moved in response to the action of centrifugal weights on a lever such that with increasing speed of the engine the member 27 moves to the right to admit high pressure fluid from duct 30 to the left side of a piston 24 which is connected to a fuel control rod 12. Consequent piston follow up closes off the high pressure fluid. With decreasing speed of the engine, the member 27 moves to the left, to exhaust the left hand side of the chamber via ducts 32, 34 and the piston follows up the valve member. In an alternative embodiment, the movement of the piston (55) Fig.2 (not shown) is transmitted to a level (50) which is connected to a fuel control rod (58). With both embodiments, should the supply pressure fail the fuel pump can still be controlled mechanically through lost motion of the valve member and piston.
Patent GB-418791-A (GB)
Title: Means for locking the bonnets of motor vehicles
IPC: E05B65/19
Filed: 1934-02-21
Abstract: 418,791. Motor-car bonnet fastenings. AUCHTERLOUNIE, A., 2, Wellington Place, Leith, Edinburgh. Feb. 21, 1934, No. 5683. [Class 44.] A motor-car bonnet or like fastening is locked by means of a detachable metal cover which fits over it and is secured to it by a keylock. Fig. 1 shows a fastening of the type comprising a spring-pressed hook 11 slidable in a cylindrical housing 9 on the bonnet 10 and engaging a keeper on the chassis ; a cover having a part 4 to fit on the handle 7 and a part 6 to fit the housing 9 is secured to the handle by a padlock 12 embracing the handle shank 8 and a part 5 of the cover, thereby preventing rotation or depression of the handle. Fig. 4 shows a fastening of the type in which an apertured member 15 co-operating with a grooved pin 20 on the bonnet 10 is attached to a cylindrical member 16 in which operates a spring-controlled rod 17 pivoted at its lower end to a rubber buffer 19 which is pivoted to a bracket 18 on the chassis ; a cover 23 engages at 24 below the lower end of the rod 17 and at 21<a> over the member or handle 15, being secured thereto by a padlock 26, to prevent upward movement of the handle 15.
Patent GB-723022-A (GB)
Title: Process to increase the output of fuel cells
IPC: H01M4/86
Filed: 1952-03-05
Abstract: 723,022. Batteries. ABEL, E. Feb. 23, 1953 [March 5, 1952], No. 5717/52. Class 53. A cell in which electrodes are in contact with an electrolyte and with oxygen and a combustible gas is provided with a positive or oxygen electrode on which a colloidal metal or metal compound is deposited. The electrode may consist of carbon which is immersed in a colloidal suspension of copper, silver, gold, platinum, iridium, osmium or its oxide and then dried.
Patent GB-370132-A (GB)
Title: A light reflecting sign
IPC: G09F13/14
Filed: 1931-02-24
Abstract: 370,132. Reflectors. CHEMAG CHEMISCH-METALLURGISCHE INDUSTRIE-AKT.-GES. and BINDL, R., Pasing, Munich, Germany. Feb. 24, 1931, No. 5719. [Class 97 (i).] A reflecting sign for road or other outdoor use comprises a surface bent to form a series of strips a, b slanting at different angles to the general plane of the device, so that when the device is arranged vertically the surfaces a slant upwards, and are adapted for the reflection of daylight, while the surfaces b are vertical or substantially so and serve for the reflection of artificial light, such as that from the headlamps of cars. The surfaces b may terminate in small horizontal receding portions c, or alternatively the difference of slope may be compensated for by making the surfaces b of greater width. The whole surface, which is preferably of polished sheet metal, may in addition be fluted or ribbed vertically. The sign is produced either by the use of a stencil or else by painting, and a backing d is preferably provided.
Patent GB-102868-A (GB)
Title: Improvements in or relating to Signalling Systems and Apparatus therefor, more particularly for use in Mines.
IPC: B66B19/06
Filed: 1916-04-20
Abstract: 102,868. Automatic Telephone Manufacturing Co., and Green, H. April 20, 1916. Order and ordertype apparatus ; mine signalling systems.-The sending- station has two keys or a reversing-key so that impulses may be sent in either direction over a single line circuit, and the receiving-station has means such as a polarized relay, whereby a cautionary signal is given when impulses are sent one way, but not when sent the other. As shown, a line 29 is connected to the mid-point of a double batterv B<1>, B<2> and a line 30 is connected to a key 1. A second key 2 is connected to the back contact 5 of key 1. The back contact 6 of key 2 is connected through a bell 7 to the line 29. This bell is used for answering signals. The batteries are connected to the key contacts 3, 4. The receiving-station has a neutral signalling-relay 12, which may operate in the same way as the master relay described in Specification 18780/14, which also describes a signalling system to which the present improvements are particularly applicable. The armature 17 of a polarized relay 8 in parallel with the relay 12 serves to close, or hold open, the local circuit of a cautionary signal lamp 11, according to the sending- key used for transmitting the signals. The battery is not short-circuited if both keys are depressed. Fig 2 shows a suitable form of polarized relay comprising a permanent horseshoe magnet 14 having brackets 19, 20 carrying screws 21, 24, the armature 17 being mounted, as shown, on the wedge-shaped end of a central core 15 on which the relay winding 16 is mounted. The screw 21 has a contact 22 co-operating with a contact 23 on the armature. The screw 24 serves as an adjustable stop. The armature is pivoted upon two small pins fixed to the core 15 and passing loosely through corresponding holes in the armature.
Patent GB-123439-A (GB)
Title: Magnetos.
Inventor: BUSHNELL JOHN BENJAMIN
IPC: H02K21/32
Filed: 1918-04-04
Abstract: 123,439. Bushnell, J. B., and Killingsworth, W. S. April 4, 1918. Magneto-electric machincs; magnetos, driving. - In a magneto provided with trip mechanism for accelerating the motion of the armature to improve the sparking when the machine is running slowly, the trip mechanism is so controlled by the timing mechanism that it is only in action when the spark is retarded, and means also are provided such that the magnetic flux is a maximum when the circuit is broken, whatever may be the position of the timing device. For these purposes the timing mechanism comprises two disks 16, 26 turning freely on the shaft 8 of the machine and connected by movable pole shoes of soft iron, arranged between the pole-pieces of the magnet and the armature. The mechanism is operated by means of an arm 17, Fig. 7, attached to the disk 16 and having within it a slot in which slides a spring-pressed catch 19. A projection on the catch 19 rides on a cam-surface on a housing 21 enclosing the mechanism, so that when the timing-mechanism is in the advanced position the catch is withdrawn into the arm 17, but in the retarded position it projects into the path of a cam 15 on a disk 14 attached to the shaft 8 of the machine. The disk 14 is connected to the driving- member 13 by a coiled spring 11 housed in a flange 10 on the disk 14. When the timing mechanism is in the retarded position, the catch 19 stops the disk 14 and shaft 8 until a. lug on the driving-member 13 projecting through a slot in the flange 10 reaches the end of the slot and causes the cam 15 to drive the catch 19 back against its spring, thus liberating the disk 14 and the shaft 8. In a modification, the catch 19 is carried on the housing of the machine and operated by a cam-surface on the disk 16. A slightly different arrangement of the pole-shoes is described.
Patent GB-1292359-A (GB)
Title: Photographic dye developer diffusion transfer process
Inventor: STEWART PAUL HAROLD
IPC: G03C8/36
Filed: 1970-02-06
Abstract: 1292359 Photographic dye developer diffusion transfer process EASTMAN KODAK CO 6 Feb 1970 [6 Feb 1969] 5771/70 Heading G2C A dye developer diffusion transfer process wherein a photographic material comprising a support bearing at least two dye image-forming units each comprising a light-sensitive silver halide emulsion layer and a dye developer in the emulsion layer or in a layer below (i.e. nearer the support) the silver halide emulsion layer, the silver halide in each emulsion layer being sensitive to a different region of the spectrum, and between the two units a stratum permeable to alkaline aqueous solution and composed of a water-insoluble polyvalent metal salt of a polymer, the polymer itself being film-forming, water-soluble and permeable to alkaline aqueous solution and containing free carboxylic acid groups, the stratum being less permeable to a dye developer in alkaline aqueous solution than a layer of the polymer itself, is exposed to a light image and developed and residual dye developers allowed to diffuse in register to a receiving layer, and wherein a catechol which is a silver halide developing agent and which has a chelating action on the polyvalent metal that is destroyed imagewise by oxidation as a function of the reduction of the light-struck silver halide to silver is present in the material during development, whereby the stratum is rendered more permeable to dye developer in the areas above the non-light-struck areas of the emulsion layer in the lower of said two dye image-forming units than in the areas above the light-struck areas thereof. The catechol may have the formula:- wherein R 1 , R 2 , R 3  and R 4  are each H, OH, halogen, carboxy, aryloxy, alkyl or aryl or wherein R 2  and R 3  or R 3  and R 4  taken together with the carbon atoms to which they are attached, and if these carbon atoms were joined by a single bond, represent the atoms necessary to form a cycloalkyl group. Preferred catechols are 4-phenyl,-3- isopropyl-, 4-t-butyl-, p-chloro- and 4-phenoxycatechol and catechol itself. The polyvalent metal salt of the polymer may be calcium alginate. The catechol may be in the sensitive material, receiving sheet or contained in an aqueous alkaline processing composition. The material may contain an auxiliary silver halide developing agent which is not a chelating agent for the polyvalent metal. Reference is made to Specification 1096343 and 1198150.
Patent GB-1159560-A (GB)
Title: Improvements in or relating to Lifting Beams
Inventor: WOODWARD THOMAS
IPC: B66C1/10
Filed: 1967-05-06
Abstract: 1,159,560. Adjustable spreader bars. LIFTING & ENG. SERVICES (LANCASHIRE) Ltd. 12 July, 1968 [6 May, 1967: 6 Feb., 1968], Nos. 21154/67 and 5779/68. Heading B8H. A lifting beam 10, Fig. 1, has a pair of attachment brackets 15 which are slidable along the beam and are frictionally locked in position by screws 20 turned by tommy-bars 21. The beam 10 is of rectangular cross-section and is embraced by the brackets 15. In a second embodiment, Fig. 4, the beam 25 is of I-shaped cross-section and the brackets 29 each run on the bottom flange on two pairs of balls. The load is suspended from pins 39 on triangular plates 38 which are pivotally suspended from the brackets 29. The plates 38 are centralized by springs, but when the plates are pulled to one side either by an unbalanced load or by tilting of the beam, the upper corners of the plate frictionally engage the lower face of the flange of the girder to hold the bracket in place. Fig. 10 shows an end view of an embodiment which is similar to that of Fig. 4 except that the beam is rectangular and fabricated from opposed channel sections 50. The triangular plates 38 are supported on balls 33 by T-shaped members 52. The triangular plates 38 are preferably provided with serrated hard steel inserts at the corners which engage the supporting beam.
Patent GB-1042423-A (GB)
Title: Improvements in supervisory systems
IPC: H04Q9/16
Filed: 1964-02-12
Abstract: 1,042,423. Transistor pulse circuits. W. J. MORLEY, and R. M. GARRETT. Feb. 12, 1964 [March 4, 1963], No. 5826/64. Heading H3T. [Also in Division G4] Transmitter and receiver portions of a system for communication along a pair of lines are decoupled, and the receiver portion incorporates redundancy. Referring to Fig. 6 (not shown), a negative input pulse at X is sent through a series of transistor amplifying stages 205 to 209 to a transmission line 15n, and also through transistor amplifying stages 205, 215, 225 to 228 to a transmission line 15p. The emitters of transistors 209, 228, besides being connected to lines 15n, 15p respectively, are connected to earth through respective diodes 272, 274 in series with resistors. Pulses received on the transmission lines 15n, 15p pass through transistors 233, 235 in cascade thus pulsing an output D via transistors 239, 241 and an output E via transistor 247. The outputs D and E are "OR-ed " together. The transmitted pulses do riot pass through transistors 233, 235 in the receiver because the current path is shunted by the diodes 272, 274. Full and dashed arrows indicate direction of electron flow during transmission and reception respectively.
Patent GB-656891-A (GB)
Title: Improvements in or relating to high frequency electric transformers
IPC: H01F30/16
Filed: 1948-02-26
Abstract: 656,891. Transformers. GENERAL ELECTRIC CO., Ltd., and BAKER, W. F. Feb. 26, 1948, No. 5832. [Class 38 (ii)] A.H.F. transformer for induction apparatus comprises a toroidal primary winding 1 and a single-turn secondary winding 2 in the shape of an annular shell substantially closely surrounding the primary winding 1 but insulated from it by a layer of polythene 3. An annular gap 4 is provided along the inner periphery of the shell 2 and, at the edges of the said gap, a pair of parallel discs 5, 6, slightly spaced apart, are developed so as to serve as means to collect the secondary current to be supplied to a work coil through concentric feeder 9. The primary winding is fed by input leads 7. The transformer can be cooled by water from a tube 15 through one of the discs 5 and out through a second tube 16. Iron dust core may be used inside the primary winding 1. In order to destroy the primary winding external field, one of the primary winding leads is brought back along through the toroidal space within the primary. Alternatively, a thin, circumferentially split copper sheath may be located between the primary coil 1 and the core.
Patent GB-931731-A (GB)
Title: Improvements in or relating to soap compositions for use in hard water
Inventor: MILLING BRYAN
IPC: C11D1/52
Filed: 1960-02-19
Abstract: A soap composition comprises 1-20% by weight of the anhydrous soap, which is generally a sodium soap, of a compound of formula R CONH(CxH2xO)mH wherein R is a C12-18-alkyl, preferably straight chain, group, x is 2 or 3 and m is 3-40, preferably 8-12, such compounds preferably having melting points of at least 30 DEG C.  The composition may be produced (a) in bar form by adding the condensate either prior to the drying of the crude soap stock or prior to milling, (b) in flake form by adding the condensate prior to flaking, or (c) in powder form by adding the condensate to a wet mixture of soap and adjuvants prior to spray-drying or -cooling.  Suitable adjuvants include condensed phosphates, sodium carbonate, silicate and perborate.
Patent GB-1134192-A (GB)
Title: Improvements in or relating to trolleys and the like for facilitating the handling and movement of articles and particularly heavy articles
Inventor: JOHNSTONE GEORGE BERNARD
IPC: B60P1/52
Filed: 1966-02-11
Abstract: 1,134,192. Low-lift trucks. JOLODA TRANSPORT EQUIPMENT Ltd. 8 Feb., 1967 [11 Feb., 1966], No. 6024/66. Heading B8H. In a lift truck comprising a channel-section load support 10 provided with double wedgeshaped cams 14 engaging rollers 13 on bogies 11 connected together in tandem by links 19 whereby, on relative horizontal movement between the load support 10 and the bogies 11, the load support is raised and lowered, the links 19 are provided with rollers, Fig. 6 (not shown), engaging further double wedge-shaped cams on the load support. In a modification (not shown), the cams are provided on the bogies and links and the rollers are mounted on the load support.
Patent GB-535570-A (GB)
Title: Improved breach mechanism for guns
IPC: F41A3/40
Filed: 1939-02-23
Abstract: 535,570. Automatic guns. VIALE, S. M. Feb. 23, 1939.No.6083. [Class 92 (ii)] Relates to breech actions for automatic or semi - automatic guns in which the breech block 11 is locked by struts 16 pivoted to the block and engaging abutments 15 on the barrel extension 13 under the influence of a cam member 26 attached to the action slide 21. According to the invention, the cam member is freely slidable laterally in the slide 21 to equalize its action on the struts. The abutments are formed by cylindrical insertions having an inclined or slightly cylindrical abutment face 20, the face of the strut being similarly shaped so that the force of the explosion tends to move the struts to unlocking position.
Patent GB-1483152-A (GB)
Title: Friction clutch
IPC: F16D7/02
Filed: 1976-02-17
Abstract: 1483152 Slip couplings JEAN WALTERSCHEID GmbH 17 Feb 1976 [27 Feb 1975] 06104/76 Heading F2U In a friction slip coupling for an agricultural machine wherein friction discs 5 are interposed between driving and driven discs 4, 3 respectively fast with a driving hub 12 and a driven drum 1, the engaging pressure is supplied by helical tension springs 8 arranged radially outwardly of the driving, driven and friction discs. A hooked end 11 of each spring 8 engages a hole 7 in a thrust plate 6 and the other end of each spring is connected by an adjusting bolt 10 to a driven plate 2 fast with the drum 1.