baber/WOPTO huggingface dataset:
Patent GB-662513-A (GB)
Title: Automatic firearm
IPC: F41A3/46
Filed: 1949-09-05
Abstract: 662,513. Automatic firearms. SCHWEIZERISCHE INDUSTRIE-GES. Sept. 5, 1949. [Sept. 3, 1948] No. 23000/49. Class 92 (ii). The breech-block of an automatic firearm comprises three relatively slidable parts 2, 4, 5, one part (2) of which is locked in the firing position by elements 14 which are forced outwards into locking engagement with notches 21 in the breech casing 1 as the result of the forward momentum of the part 4 which carries firing pin 3 after the breech-block has reached its forward position. The outward movement is affected by cooperating inclined surfaces 19 on the elements 14 and a conical surface 18 on the part 4. The latter has a tubular rearward extension which has a pin and slot connection 11, 12, in the parts 2 of the breech-block and which is acted upon by a return spring 6. An enlargement 8 at the rear end of the extension strikes against the rear part 5 of the breechblock towards the end of its forward movement and the part 5 is then drawn forwards to compress a spring 9 arranged between it and a shoulder 10 on the part 4. The spring 9 serves, through the part 5, to give a rearward impulse to the firing pin after firing, and after a short rearward movement of the firing pin the locking elements are forced inwards to permit recoil of the breech-block.
Patent GB-204058-A (GB)
Title: Improvements in or relating to apparatus for purifying gases
IPC: C10K1/12
Filed: 1922-10-03
Abstract: 204,058. Koppers Co., (Assignees of Sperr, F. W.). Dec. 8, 1921, [Convention date]. Washing processes; purifier waste, revivifying. -Apparatus for purifying gases by the process described in Specification 190,116 comprises a plurality of absorbers, regenerating towers cooperating with the respective absorbers, and means for circulating the gas through the absorbers in series or in parallel. In the figure the gas to be purified enters the plant at e and normally passes first into an absorber A and then into an absorber G, cocks a, b and h being open and cocks c, d closed. The fouled liquors collecting in tanks C, I are regenerated in towers D, J respectively by means of air passed into the bottom of the towers. By adjustment of the cocks a, d either set of towers may be used independently.
Patent GB-665331-A (GB)
Title: Improvements in or relating to collapsible trays or boxes
IPC: B65D5/30
Filed: 1949-09-06
Abstract: 665,331. Collapsable boxes or trays. ROLLINSON, E. W. (Sutherland Paper Co.). Sept. 6, 1949. No. 23062/49. Class 18. A collapsable box, tray or box lid formed of a unitary blank, Fig. 7, comprising bottom, side wall and end wall panels 1, 2, 3 respectively and end wall flaps 5. has angularly disposed slits 7 in the side walls opening at the end edges of the side walls to receive the inner edges of the corner flaps when the box is erected, the corner flaps having upwardly and downwardly disposed tongues 16, 17 that are engagable respectively with the upper edges of the outer wall slits and the bottom edges of recesses and notches 12, 13 at the edges of the side walls. As shown, the slits 7 comprise short cornered slits 9, 10, 11, opening to end edges of the side walls by means of a horizontal slit 8 aligned with the fold line 4.
Patent GB-813985-A (GB)
Title: Making transformers
IPC: H01F41/00
Filed: 1955-08-10
Abstract: A pressure-sensitive soft magnetic core of a transformer is embedded in a non-thermoplastic material consisting of polymerized oil having substantially no tensile strength, and is then covered in a low-pressure thermosetting casting resin.  The compressibility and coefficient of thermal expansion of the polymerised oil are greater than those of the casting resin.  The embedding material may be produced from tung oil or oiticica oil and a catalyst, such as ferric chloride, with the addition of castor oil.  The embedding material may be applied by spraying or dipping, or in a mould.  For example, a heated mould containing a transformer may be filled with tung oil, which hardens by polymerization.  The transformer and covering are removed from the mould, and the casting resin is applied in a second mould.
Patent GB-1316044-A (GB)
Title: Circuit for the regeneration of rectangular signals
IPC: H04J1/14
Filed: 1971-04-19
Abstract: 1316044 Pulse thresholding circuits; automatic telephone equipment SOC ANON DE TELECOMMUNICATIONS 19 April 1971 [30 July 1970] 23086/71 Headings H3T and H4K In a circuit for thresholding a pulse signal formed of a burst of oscillations, the threshold level for the leading flank does not vary with signal amplitude but for the trailing flank increases with increasing signal amplitude in a non- linear manner. As shown, the pulse burst is applied via an amplifier 10, stabilized by a diodeconnected transistor 9, to a threshold detector 11. During the pulse the emitter capacitor charges so that at the trailing flank of the signal burst only a small decrease in amplitude switches off the detector transistor. The output pulse width may thus be independent of signal amplitude. The detector transistor 11 is biased to operate linearly for small signals but for larger rectification occurs in the emitter circuit. The load is non-linear so that the negative feedback provided by resistor 11<SP>1</SP> decreases with signal amplitude and the change in threshold level is therefore not proportional to signal amplitude.
Patent GB-971796-A (GB)
Title: Improvements in or relating to disc brakes
Inventor: RODWAY JOHN
IPC: F16D55/2255
Filed: 1962-06-15
Abstract: 971,796. Disc brakes. AUTOMOTIVE PRODUCTS CO. Ltd. June 7, 1963 [June 15, 1962], No. 23198/62. Heading F2E. A disc brake of the kind having a pair of pads 12, 13 engageable with opposite faces of an axially fixed disc 10 has a floating member 14 pivoted at 15 to a fixed support 11 and providing a mounting for an applying cylinder 16 whose piston 17 applies one pad 12 directly and imparts to the member 14 a reaction force which applies the other pad 13, the pivot 15 being on the same side of the plane of the disc as the directly applied pad, and the pad applied by the reaction force having its centre of pressure 13a nearer the pivot 15 than that 12a of the pad 12, so that in the direction of rotation D of the disc drag force on the pad 13 acts on the moving member to provide a moment about the pivot 15 which in addition to the mechanical advantage provided by the relative positions of the centres of pressure 12a, 13a results in a self-servo effect on the shoe 13 to give increased braking force for a given hydraulic pressure in cylinder 16. In the brake shown the drag force acting on pad 12 is taken by the support 11 through abutment of its backing plate 24 against a flange 27 of the fixed support, so that it does not contribute to the self-servo effect. The various reaction forces exerted by the disc on the pads and by the pivot 15 on the member 14 are then as shown at 12b, 13b, 15b. A different force diagram (Fig. 2, not shown) is obtained if plate 24 anchors against the member 14 in which case the drag force on pad 12 also assists the servo action and the lines meet at a point nearer to the disc. In either case a negative servo effect is obtained on the pad 13 when rotation of the disc is in a direction opposite to D. Backing plate 24 is stepped at its ends Fig. 2, so as to provide shoulders engaging the tops of flanges 26 and 27 of support 11. Member 14 comprises upper and lower plates 18, 19 having registering apertures 21 to accommodate the disc and cylinder, the latter being located by axial grooves in its rim 29 engaging edges of the opening 21 in the lower plate and held in place by spring clips 31. Backing plate 22 of pad 13 is stepped to seat on both plates 18 and 19. Pivot 15 is formed by a pin 35 having an associated spring 38 and split pin 41 to resiliently mount the member 14 on the support 11.
Patent GB-1394776-A (GB)
Title: Clasp for a bracelet
IPC: A44C5/24
Filed: 1973-05-16
Abstract: 1394776 Bracelet clasps CARTIER 16 May 1973 [17 May 1972] 23236/73 Heading E2A A clasp for a bracelet 6 comprises two legs 1, 2 pivoted relatively to one another at one of their respective ends and each provided at their other respective ends with means for receiving the bracelet, first locking means for locking the two legs relative to one another, one of the legs 2 being telescopic and formed by two portions 9, 10, adapted to slide relatively to one another, and second locking means for locking the two portions of the leg 2 in position, the first locking means ensuring the locking of the two legs of the clasp for each of the lengths of the telescopic leg determined by the second locking means. As shown, the portions 9, 10 have a dovetail connection for relative longitudinal movement which is limited by a lug 12 slidable in a slot 13. A projection 11 on the portion 9 co-operates with holes 15 in the portion 10, and the adjusted position of the two portions is locked by engagement of a spring clip 8 in one of the holes 16. In a modification, one of the portions of the leg 2 comprises a sleeve of rectangular cross-section in which the other portion is slidable and has lateral, spaced openings for the reception of projections formed on resilient tongues integral with the other portion; in this case the holes 16 are formed in the leg 1 and the spring clip 8 is carried by the sleeve. Both legs may be telescopic.
Patent GB-1014743-A (GB)
Title: Improvements in or relating to joining metal parts
IPC: B23K35/30
Filed: 1962-06-18
Abstract: In a process of joining together by resistance welding metal parts such as iron or steel for transistor envelopes or thermionic valves, the parts are first coated in an electroless Ni plating bath comprising an aqueous solution of hypophosphite and Ni ions in a mole per cent ratio of at least 3:1, and a compound forming complexes with Ni ions in a mole per cent ratio to Ni of at least 2:1, the solution having a pH of 4-7 and the coating produced contains at least 12% by weight of phosphorus in at least the outer part of the Ni coating. The complexing agents may be citric acid, hydroxy acetic acid, ethylene diamine, ammonia or amino acetic acid.
Patent GB-243485-A (GB)
Title: Improvements in valves for controlling the flow of a plurality of streams of fluid
IPC: F16K11/16
Filed: 1924-10-04
Abstract: 243,485. Markes & Co., Ltd., W., Lane, H. R., and Galley, W. G. Oct. 4, 1924. Manually-actuated multiple-way valves. - A valve device for a hot and cold water supply comprises a casing having a mixing chamber with a discharge opening and having a number of separate inlet passages leading to separate concentric valve seats wherein one valve, is coupled directly with the operating member and all of the valves are coupled with one another through lost-motion devices. A central valve 14 controlling a cold-water inlet 2 is operated by a spindle 13 screwing in an outer spindle 11 which is cup-shaped at its inner end 19 to take an annular valve 12 controlling a hot-water inlet 3 and is screwed in the valve casing cover 9. The inner spindle 13 has an arm 17 with screw heads 18 engaging slots in the cup-shaped portion 19 of the outer spindle to give a lost-motion connection so that the central cold-water valve 14 is finst opened, then the hot-water annular valve 12 is opened and finally the cold water is shut off by a head 28, formed on the central valve, seating on the other end 5 of the tubular inlet valve seat member 4. Stuffing-boxes 22, 22a are fitted between the inner and outer spindles and the casing cover 9. The annular valve 12 is secured to the cup-shaped spindle by a loose ring 24 so as to be rotatable thereon to prevent undue wear. The fluids mix in a chamber 12a and are discharged therefrom through an outlet.
Patent GB-639588-A (GB)
Title: Improvements in pulse-discriminating systems
IPC: H04N5/10
Filed: 1947-08-26
Abstract: 639,588. Pulse discriminating circuits. HAZELTINE CORPORATION. Aug. 26, 1947, No. 23578. Convention date, Sept. 11, 1946. [Class 40 (vi)] [Also in Group XL (b)] A circuit for separating pulses of a given period from others in a train and for distinguishing these pulses from similar but unwanted pulses which have the same period but occur midway between the wanted pulses, comprises a time-delay means which in response to a wanted pulse produces an output pulse of opposite polarity delayed by half of the given period which is used to reduce the gain of a repeater to which the input pulses are applied so that the wanted pulses only pass through the repeater with an exalted amplitude. The Figure shows a television receiver used in a system in which during the beginning and end of the frame retrace period equalizing pulses are transmitted which are similar to the line sync. pulses but occur at double the line sync. pulse frequency and alternate ones of which serve to maintain synchronization of the line time base generator. Positive going combined line, frame and equalizing pulses after separation from the picture signal content in unit 18 are applied via amplifier stages 35 and 42 to the delay network 30, 31 which is shorted at its distant end 33. A positive line sync. pulse at the output of valve 42 after reflection at the shorted end of the delay network re-appears at the input of the line as a negative going pulse delayed by one half of the line period. The reflected pulse is thus applied to the second control electrode of valve 35 coincident in time with the next unwanted equalizing pulse and the gain of valve 35 is considerably reduced so that the unwanted pulse appears at the output of valve 35 at a very much reduced amplitude. The reflected pulse is reflected without polarity change at the open circuited end 32 of the delay line and appears again at this end after a further reflection from end 33 as a positive going pulse coincident in time with the next wanted line sync. pulse which is thus amplified by stage 35 to appear at the output of valve 35 with increased amplitude. The output of valve 35 will thus comprise the wanted line sync. pulses having an increased amplitude and these are applied to synchronize the line scanning generator 19. Pulses of a different period to the wanted ones or those occurring midway between, only appear at the output of valve 35 at a very low level. The attenuation of the delay line is in part compensated for by the positive feedback between valves 35 and 42 via the network 46, 47, 48. Specification 20116/47 (as open to inspection under Sect. 91) is referred to.
Patent GB-1021254-A (GB)
Title: Improvements in or relating to mirror assemblies for motor vehicles
IPC: B60R1/10
Filed: 1961-06-30
Abstract: 1,021,254. Vehicle driving mirror assemblies. F. W. HALES. June 26, 1962 [June 30, 1961], No. 23638/61. Heading B7J. A pair of mirrors 23, 24, Fig. 2, are carried by articulated arms 14 from a cylindrical support member 10 mounted on the wing 13 of a vehicle opposite to the driving seat, whereby when the latter is at the nearside of the road a view of oncoming vehicles is reflected by the mirror 23 to the mirror 24 and thence to the driver's eyes. The member 10 has normal thereto a spigot 11 rotatable about a vertical axis in a seating 12 on the vehicle wing 13 and each arm 14 comprises four rod members 17, 18, 19 and 20 jointed as at 9 by tongue and groove type joints held together by bolts 16. The members 17 are adjustable by the aid of lock nuts 15 about a horizontal axis in the member 10 and the members 20 universally support the mirrors 23, 24.
Patent GB-284954-A (GB)
Title: Crystallisation mixer for treating masse-cuites in sugar works and other applications
IPC: C13B30/02
Filed: 1927-09-08
Abstract: 284,954. Gardner, L. F., (Schneider et Cie, and Akciova spolecnost drive Skodovy zlavody v Plzni). Sept. 8, 1927. Rotary mixers.-In a rotary mixer, more particularly for use in sugar manufacture, of the kind comprising a rotary, horizontal, jacketed drum, the jacket is divided into baffled compartments through each of which water is circulated whereby a more even temperature is attained, and the drum is stayed by diagonal members which support helically-arranged stirrers and may be hollow to form communicating passages between the compartments. Fig. 3 is a diagrammatic representation of the compartments formed in the jacket of the drum shown in Fig. 1. The compartments 1, 2, 3 are formed by longitudinal partitions G, each compartment being provided with a baffle g and pipe connections to main supply and discharge pipes b, b<1>. The drum is mounted in bearings and the distributing pipes H<1>, I<3> are connected to passages in the hollow journal B<1>. In other forms the jacket is divided into two sets of compartments supplied by connections to the journals at both ends and the diagonal stays J, on which the helical stirring members K are mounted, serve as connections between the compartments, while in a further form the drum is provided with a hollow axle which serves as a discharge for the heating water and is connected to the compartments by hollow radial stays.
Patent GB-481105-A (GB)
Title: Improvements in corrosion-resistant alloys
IPC: C22C19/05
Filed: 1936-08-28
Abstract: Corrosion resistant alloys particularly for making pumps, valves, pipes, and other parts of chemical apparatus consist of 50-55 per cent of nickel, 20-30 per cent of chromium, 2-12 per cent of iron, less than 0,3 per cent of carbon, less than 1 per cent of manganese, up to 5 per cent of silicon, up to 6 per cent of molybdenum, up to 3 per cent of tungsten, and up to 7 per cent of copper.  The alloy may be made by charging a furnace with low carbon steel and adding in succession chromium as ferro-chrome, copper and nickel partly as an alloy and partly as free nickel, and then the remaining ingredients while the bath is protected by a slag.  The product is treated with a scavenger and poured into moulds.
Patent GB-337455-A (GB)
Title: A new or improved method of and means for duplicating copies of writings, drawings and the like
IPC: B41M5/06
Filed: 1929-08-02
Abstract: 337,455. Lawrence, W. L. Aug. 2,1929. Offset printing; impression surfaces.-Copies of written matter, drawings, and the like are obtained by preparing an original in aniline or other copying-ink, taking an impression therefrom on to a rubber or rubber-surfaced member previously treated with glycerine or a compound thereof, and transferring on to blank sheets. The original is prepared on a sheet of non-absorbent material such as paper, glass, or celluloid, and is allowed to dry before an impression is taken. The impression-member may be in the form of a roller, preferably provided with handles and with means for limiting its rotation, a rocker, or simply a rubber sheet, in which case pressure is applied by means of a roller. The impressionmember is smeared with glycerine or a glycerol compound, to which may be added other substances to facilitate application, and is wiped until it appears dry. The coating may consists of three parts by volume of glycerine to one part of an aqueous or alcoholic solution of potash or soda soap. The impression surface may be reconditioned for use by washing with water or soap and water, and occasionally with methylated spirit. The flat sheet form may be constructed as a hand stamp.
Patent GB-533648-A (GB)
Title: Improvements in or relating to the production of valuable organic acids
IPC: C07C51/36
Filed: 1939-08-17
Abstract: 533,648. Propionic and adipic acids. DU PONT DE NEMOURS & CO., E. I. Aug. 17, 1939, No. 23775. Convention date, Aug. 17, 1938. [Class 2 (iii)] [Also in Group III] Organic acids, principally propionic, but containing adipic and other non-volatile acids, are made by the hydrogenation of propiolic acid and its salts in the presence of a hydrogenation catalyst such as nickel or cobalt. The temperature may be 50‹-80‹C. and the pressure 60-1,500 lbs. per square inch. In an example, an aqueous solution of sodium propiolate is hydrogenated in the presence of a catalyst prepared as follows :-sodium is added to a suspension of nickel chloride in a solution of naphthalene in glycol dimethyl ether, the precipitated pyrophoric nickel being washed with glycol dimethyl ether, dried, washed with water to remove sodium chloride, and partially oxidized by allowing air to come into contact with it slowly while the temperature is not allowed to rise above 25‹C. The yield of byeproducts can be increased by pretreating with a stream of oxygen a suspension of nickel in a solution of sodium propiolate at 20‹-60‹C. On subsequent hydrogenation the yield of non- volatile acids is 40-50 per cent.
Patent GB-265488-A (GB)
Title: Garment hangers
IPC: A47G25/40
Filed: 1926-09-27
Abstract: 265,488. Baier, W. Sept. 27, 1926. Coat and like hangers.-A collapsable garment hanger comprises two sheet-metal members 1, 2 hinged together and of channel cross-section tapering from the hinge to their outer ends, the side portions of the channels being formed at the hinge end to abut when the device is in use and support the members at a convenient angle apart. In each member slides, between limit stops, an extension 4, comprising two parallel limbs engaging the insides of the side members of the channel. One of these extensible members carries a hook 11, and the other a button-engaging member 10 for supporting trousers in known manner. A suspending hook 23 is bent at a right-angle it its lower end to form a hinge-pin. To guide and hold the abutting side portions, the member 2 carries on each side a spring plate 14 slotted at its lower end to engage lugs 16, 17 on the two members when the device is opened out for use. Clasps 21 retain the inner side portions of the channel members against springing outwardly. The limbs of the members 4 are bent inwardly at their ends, and engage stops 6, 7 at the extremes of their travel.
Patent GB-337465-A (GB)
Title: Improvements in vehicle bodies having collapsible heads
IPC: B60J7/06
Filed: 1929-08-03
Abstract: 337,465. Austin, Sir H. Aug. 3, 1929. Hoods. - In road vehicles of the kind in which the roof fabric is carried by transverse roof members slidable on guides in the cant rails in such a way that alternate members are guided in the guides for the entire length while the others become free from the guides at the rear to permit the fabric to fold, the roof fabric is moved back through the agency of wire coils the convolutions of which can transmit compression strain but will yield to tension to permit the fabric to stretch. The coils f<3> may comprise links secured to the roof members B by means of end pieces f<1> and certain or all of the links may be rigid by introducing bars G within the coils and secured to one of the end pieces f<1>. The end pieces f<1> are mounted on pins f which, in the case of roof members intended to remain guided by the cant rail guides throughout their retracting movements, project into the cantrail guides as shown in Fig. 5. In place of links a continuous length of wire coil f<4>, Fig. 6, may be secured to each side of the roof fabric C by means of a pocket f<5>, the wire coils being unattached to the roof members B which however are attached to the roof fabric.
Patent GB-1380205-A (GB)
Title: Ketonic flavouring agent for tobacco
IPC: A23L27/20
Filed: 1972-01-19
Abstract: 1380205 Flavouring tobacco &c FIRMENICH SA 19 Jan 1972 [11 Jan 1972] 23893/73 Divided out of 1380191 Headings A2B and A2C 3-isopropylcyclopent-2-en-1-one is used for flavouring tobacco or tobacco substitutes, or is mixed with at least one other flavouring agent to form a flavouring composition.