baber/WOPTO huggingface dataset:
Patent GB-1394010-A (GB)
Title: Hand-held tools particularly dental handpieces
IPC: B06B1/06
Filed: 1973-04-19
Abstract: 1394010 Dental handpiece SIEMENS AG 19 April 1973 [21 April 1972 (2)] 19198/73 Heading A5R [Also in Divisions B4 and H2] A dental instrument comprises a handpiece I carrying a holder for a tool 5, a laminated electromechanical transducer 2 in the handpiece, coupled to the tool 5 to oscillate it when excited, a positive feedback loop including a vibration sensor and an amplifier for reinforcing oscillations of the tool 5 at the natural frequency of the transducer 2. A flexible tube 7 feeds electrical power and cooling and rinsing agents to the handpiece 1. The transducer 2 consists of a plurality of planar oscillators 10 of a piezo-electric material such as barium titinate, separated by metal foils (12, Fig 2, not shown), alternate elements being connected in parallel. The sensor consists of a similar planar element 11 adjacent the oscillator stack or in its middle. The amplifier is a two stage transistor amplifier with a choke 22 in the collector circuit of the output transistor 17, a switch (23, Fig 3, not shown), and a d.c. operating on a direct voltage preferably 24V. When the switch 23 is closed, the transistor begins oscillation, which is sensed by the element 11, amplified and fed back to the transducer 2 to maintain oscillation at a frequency of 22-40 kHz. The transducer 2 consists of about 30 planar elements 10 30-50 mm long, about .3 mm thick and about 8-10 mm wide. In one alternative embodiment the circuit 3 may be disposed at the end of the tube 7 and in another embodiment a magnetostrictive transducer may be used.
Patent GB-256273-A (GB)
Title: A process for protecting wool from damage by bacteria
Filed: 1926-08-03
Abstract: 256,273. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbwerke vorm. Meister, Lucius, & Br³ning). Aug. 3, 1925, [Convention date]. Fibres, treating.-Wool is protected from damage by bacteria by treatment with a solution of an alkylated naphthalene-sulphonic acid. This treatment is applied separately before or after treatment with alkali or alkaline baths in the usual course of manufacture, as salts of alkylated naphthalene-sulphonic acid have little or no tendency to improve the resistance of wool to bacteria. The treatment may be applied to the loose wool, or to yarn or piece-goods at any stage. For example, 50 kilograms of wool are treated, after the usual washing, for one hour at 50‹ C. in a bath containing 12¢ kilograms of dibutylnaphthalene-sulphonic acid in 1200 litres of water, after which the wool is rinsed.
Patent GB-733647-A (GB)
Title: Improvements in or relating to pressure tight joints between tubular elements
Inventor: MARSKELL WALTER GEORGE
IPC: F16L13/007
Filed: 1952-07-30
Abstract: 733,647. Tube joints. BABCOCK & WILCOX, Ltd. July 28, 1953 [July 30, 1952], No. 19246/52. Class 99 (1). [Also in Group XXII] In a joint between tubular elements 1, 2, e.g. the tubes of a superheater, of steels having different thermal coefficients of expansion, the element 1 is formed with an annular axially-extending pocket 22, e.g. between a tube 3 of ferritic steel and a collar 4, which houses a length of the element 2, e.g. of austenitic steel. The inner and outer circumferential surfaces are in intimate contact with the inner and outer walls of the pocket, and there are locking means which prevent relative longitudinal movement between the elements 1, 2. The internal surface of the element 2 may be formed with a number of evenly spaced, circumferential grooves 33 of rectangular cross-section, and equally spaced longitudinally extending grooves 35. The collar 4 may be provided with an internal, annular flange 11, the opening 12 of which fits the outside of the tube 3, having inner and outer curved shoulders 13, 14; the inner surface of the collar is formed with a number of longitudinally spaced, circumferential grooves 21. The elements are assembled as shown in Fig. 1 by inserting the element 2 in the pocket 22 such that the curved end 30 of that element fits the shoulder 13 of the collar 4, and the grooves 21, 33 are staggered by a half-pitch. An initial expanding operation of the tube 3 is carried out to nip the parts together in the correct relative positions. In the final expansion, the outer surface of the tube 3 is caused to flow into the grooves 33, 35 of the element 2 and the outer surface of the element 2 is caused to flow into the grooves 21 of the collar 4, thereby preventing relative rotational and longitudinal movements between the elements 1, 2. The collar 4 and tube 3 are united by the deposition of weld metal in the groove 17, and the element 2 and tube 3 are cut away at 28 and 7 to provide one side of a welding groove. In an alternative method of assembly of the joint, a steel support ring is disposed around the collar 4, the element 2, in this instance ungrooved, being pushed home in and fully expanded against the collar, after which the grooves 33, 35 are machined on the interior surface of the element. The tube 3 is threaded through the flange 11 of the collar 4 to form the pocket 22 and fully expanded into engagement with the element 2. Finally, the collar 4 and tube 3 are united by welding at the groove 17 and a final expanding operation is given to the whole assembly. Specification 686,656, [Group XXII], is referred to.
Patent GB-348937-A (GB)
Title: Improvements in or relating to radio signalling systems
IPC: H04L1/04
Filed: 1930-06-25
Abstract: 348,937. Wireless telegraphy. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. June 25, 1930, No. 19388. Convention date, July 26, 1929. Addition to 347,956. [Class 40 (v).] The wireless telegraph system of the parent Specification, in which the beginning and end of each signal are transmitted as an impulse of different wave-length, is modified by transmitting the beginning of successive signals on different wavelengths, and the ends on other different wavelengths. The invention increases the possible speed of transmission, which is limited by the broadening of short-wave signals during transmission.
Patent GB-197872-A (GB)
Title: Apparatus for carrying out highly exothermic catalytic reactions between gases, particularly catalytic oxidation of ammonia with oxygen
IPC: C01B21/26
Filed: 1922-07-14
Abstract: 197,872. Cederberg, I. W., and Bõckstr÷m, H. M. July 14, 1922. Catalytic or contact apparatus; nitrogen oxides, catalytic production of by combustion of ammonia; sulphur trioxide, catalytic production of.-Apparatus for carrying out exothermic catalytic reactions in gases, particularly the oxidation of ammonia and the production of sulphuric anhydride, comprises a series of rings 2 in which the contact elements 1 are supported and which when pressed together, as by bolts 3, form a gas-tight chamber having inwardly and outwardly projecting flanges 4, 5. The flanges serve to dissipate the heat of the reaction, and at the same time ensure that no portion of the gas flow shall evade passage over or through the contact material. The contacting faces of the rings 2 are preferablv conical; and in the case of an ammonia-oxidation apparatus, the rings are preferably of aluminium or a nickel alloy.
Patent GB-223183-A (GB)
Title: Improvements in internal combustion engines
IPC: F02B1/12
Filed: 1923-04-09
Abstract: 223,183. Newcomb, E. C. April 9, 1923. Regulating.-In a twostroke engine, the pressure difference between the outgoing exhaust and the incoming combustible mixture is maintained small by means of a throttle 25 in the exhaust moved simultaneously with a cam 9, which limits the amount of opening of a suction-actuated valve in the carburettor delivery pipe 7.
Patent GB-644542-A (GB)
Title: An improved fire-detection apparatus
IPC: G08B17/06
Filed: 1948-07-21
Abstract: 644,542. Fire alarms; fire extinguishing. MATHER & PLATT, Ltd., and BARCLAY, S. F. July 21, 1948, No. 19506. Classes 47 (i) and 47 (ii)] Means for operating a fire alarm or a sprinkler system in case of fire comprises two wires a, b of which the one a is insulated and the other b is bare or coated with a heat absorbent material, the two wires forming two arms of a Wheatstone bridge of which the other two arms are resistances c, d or two further wires similar to the wires α, b. The bridge includes a variable resistance e for setting the zero and a resistance h, normally short-circuited, for testing purposes. Unbalance of the bridge due to heating of the bare wire is detected by a polarized magnetic amplifier f which operates the alarm or sprinkler system through a relay g.
Patent GB-275598-A (GB)
IPC: B61H15/00
Filed: 1927-07-22
Abstract: 275,598. Marty, L. Aug. 3, 1926, [Convention date]. Compensating for wear. - In an automatic slack-adjusting mechanism for vehicle and other brakes, an element comprising a toothed rod 4 cooperating with spring-pressed jaws 8, 9 of which the jaw 8 is longer than the jaw 9 is interposed between links 1, 6 of the actuating mechanism so that its effective length changes step-by-step to compensate for wear of the braking elements. In the arrangement shown the jaws 8, 9 are located in a recess formed within a tubular member 3 having an end-cap 7, the jaw 8 being immovablerelative to the member 3, while the jaw 9 is movable to an extent slightly exceeding the pitch of one tooth and is connected to an external sleeve 13 fitted with an inner sleeve 11 which forms an abutment for a spring 12 bearing at its other end against the cap 7. When the lever 1 is pulled to the right the sleeve 13 ultimately comes into contact with a stop 14 and, when sufficient wear has taken place on the brake elements, the jaw 9 is caused to slip a tooth on the rod 4, at the same time compressing the spring 12 ; during the return movement of the lever the spring 12 expands and displaces the jaw 8, sleeve 3 and cap 7 to the extent of one tooth, thus restoring them to a normal position relative to the jaw 9. In the arrangement shown the rod 4 acts in tension and is automatically shortened, but modifications are described in which the rod acts in compression and is automatically lengthened as wear of the brakes occurs.
Patent GB-1121304-A (GB)
Title: Packets for cigarettes or the like
IPC: B65D85/10
Filed: 1964-07-27
Abstract: 1,121,304. Packets. MOLINS ORGANISATION Ltd., J. W. CHALMERS, and W. A. ROFFEY. 26 July, 1965 [27 July, 1964], No. 19665/68. Divided out of 1,121,303. Heading B8P. A one-piece flip-top cigarette &c. packet is moulded from a plastics material and has a rectangular body closed at one end, the back B3 of the body being formed with a hinge plate I having two parallel hinge lines of weakness H1, H2 connecting it with a lid L which can be pushed over extensions BE3 of the open-ended body walls. The hinge line H1 is weaker than the hinge line H2. Outwardly-bent corners (R), Fig. 1 (not shown), at the ends of a finger-access recess across the front edge (BE1) of the box, engage frictionally within the flip-top lid to hold the latter closed.
Patent GB-726038-A (GB)
Title: Improvements in sterile tubed sutures and ligatures
IPC: A61B17/06
Filed: 1953-07-15
Abstract: 726,038. Packages. ETHICON SUTURE LABORATORIES, Inc. July 15, 1953 [Aug. 1, 1952], No. 19697/53. Class 94 (1). [Also in Groups VI and IX] Suture or ligature material 18 is wound on a resilient reel 12 and enclosed, with or without sterilizing liquid 24, in a sealed container 22, e.g. a glass tube. The reel, which may be made of cardboard, paper or plastic, is of tubular form having a longitudinal slot extending the full length thereof and tabs 14 between slits at either end, the ends 16, 17 of the material 18 being passed under the tabs and through the slits. After the reel has been removed from the container it is placed on a sterilized dispensing spool 26, Fig. 6, which has an enlarged end 28 and a reduced end 30 screw-threaded to receive a cap 34.
Patent GB-1426204-A (GB)
Title: Apparatus for assembling hull modules
IPC: B63C5/02
Filed: 1973-04-26
Abstract: 1426204 Bridge cranes MITSUI SHIPBUILDING & ENG CO Ltd 26 April 1973 [28 April 1972] 19816/73 Heading B8B [Also in Division B7] Apparatus for assembling a hull module 14 comprises supports 1 which are pivoted to the ground at 2 and which carry rails 8 and detachable cross-beams 9. A beam 11 runs on the rails and carries a lifting trolley 12. After removal of the beams 9 and 11, auxiliary supports 3 can be moved from their solid to their dotted positions thereby moving the supports 1 further apart to accommodate a larger module. The auxiliary supports 3 are provided with devices 6 for adjusting their lengths.
Patent GB-1285238-A (GB)
Title: Disazo dyes
IPC: C09B35/34
Filed: 1970-04-24
Abstract: 1285238 Disazo dyes HODOGAYA CHEMICAL CO Ltd 24 April 1970 [20 May 1969] 19859/70 Heading C4P Disazo dyes have the general formula wherein R is an alkyl radical having 1-4 carbon atoms or a benzyl radical; Z# represents an anion and B represents either (i) where A is a phenylene or naphthylene radical which may have a C 1 -C 4  alkyl, C 1 -C 4  alkoxy, acylamino or halogen atom as substituent; R 1  and R 2  represent the same or different H, C 1 -C 4  alkyl, C 1 -C 4  alkoxy, C 1 -C 4  cyanoalkyl, C 1 -C 4  alkoxyalkyl, C 1 -C 4  halogenoalkyl or C 1 -C 4  aralkyl radical, an optionally substituted phenyl group or R 1  and R 2  may be bonded together directly or linked with a nitrogen or oxygen atom to form a ring; or B represents (ii) where X is a radical containing at least 2 carbon atoms which forms a 5- or 6-membered ring with the nitrogen atom and the benzene ring and Y is C 1 -C 4  alkyl, alkoxy, cyanoalkyl, alkoxyalkyl, halogenoalkyl or aralkyl. The dyes may be obtained by tetrazotizing guanazole and coupling with the required amine B and thereafter quarternizing the obtained disazo compound with an alkylating or benzylating agent to introduce the radical R. The dyes give blue and reddish-blue shades on paper, cotton, silk, leather and synthetic fibres.
Patent GB-370280-A (GB)
Title: Means for controlling the internal combustion engines of motor vehicles
IPC: B60K26/00
Filed: 1931-07-13
Abstract: 370,280. Controlling motor vehicles. COLELL, R., 7, Richard Wagner Strasse, Karlsruhe, Germany. July 13, 1931, No. 20066. Convention date, Oct. 1, 1930. [Class 79 (v).] The fuel supply to the internal-combustion engine is automatically interrupted whenever the throttle is closed and the engine is driven by the vehicle, the control members for the throttle, clutch and change-speed gears being so connected to the means for stopping the fuel supply that even when the throttle is closed the fuel is again supplied to the engine if the clutch is disengaged or the gears put in neutral position. In the construction shown in Fig. 1 the accelerator pedal 2 is drawn by its spring 5 into the " idling " position in which the throttle 3 is closed, the pedal lever having an arm 6 bearing on a slidable stop 7 shown in a raised position. When the stop is lowered the arm 6 and pedal 2 move beyond the throttle-closing position and a projection 9 on the throttle rod'4 closes a valve 10 which may control either the supply of fuel to the carburetter jets or the slow-running mixture. The stop 7 is lowered by a spring 27 and is raised, to ensure the supply of fuel to the engine, either by an arm 8 which rises to the position shown when the gears are in " neutral or by an arm 16 which rises when the clutch is disengaged. In the construction shown in Fig. 3 three valves 251, 261, 271 are respectively controlled by the accelerator pedal, the clutch pedal and the gear lever ; when these valves are all open atmospheric air is admitted at 30 and passes through the valves in series to a pipe 34 leading to the slow-running jet so as to destroy the suction effect there and stop the supply of fuel. The three valves are open only when the throttle is closed, the clutch engaged, and one or other of the gears engaged as soon as any valve is closed the slow-running jet works normally. In a modification the clutch and gear controls act on a single valve.
Patent GB-715626-A (GB)
Title: Improvements in or relating to packets, e.g. for cigarettes
IPC: B65D85/10
Filed: 1951-08-27
Abstract: 715,626. Wrappers; packages. MOLINS. D. W., HARVEY, V. P., and MOLINS MACHINE CO. Ltd. Aug. 25, 1952 [Aug. 27, 1951], No. 20192/51. Classes 94 (1) and (2) A composite blank for forming a blockshaped packet by folding around the contents, e.g. cigarettes, comprises a single layer of metal foil 1 and either a single portion or two separate portions, of paper 2A, 2B, which extend beyond the foil at 4 and are secured by adhesive to the foil at 3. When two separate portions of paper are used an exposed portion 1A of foil is left in the middle.of the blank. The blank is folded as shown into U-form, the exposed portions 4 providing paper-topaper adhesion at opposite narrow sides of the packet, and the foil being exposed at the bottom and top of the packet. Alternatively, Fig. 1 (not shown), a single portion of paper may be used instead of the two portions 2A, 2B.
Patent GB-1163080-A (GB)
Title: Colour Video Signal Generating Device.
Inventor: TAKAGI TOSHIHIKO
IPC: H04N9/077
Filed: 1966-07-29
Abstract: 1,163,080. Colour television. NIPPON COLUMBIA K.K. 29 July, 1966, No. 20222/69. Divided out of 1,160,232. Heading H4F. The image of a coloured object recorded on a monochrome film 105<SP>111</SP>, Fig. 2, via a striped filter 105<SP>11</SP>, Fig. 1, having strip filter elements W, R, G and B sequentially arranged which transmit all colours, red, green and blue respectively, is converted into time-divisional signals E<SP>1</SP> w , E<SP>1</SP> R , E<SP>1</SP> G  and E<SP>1</SP> B  by means of a pick-up tube 50 on to which the striped image recorded on the film is projected and transversely scanned thereby. The time-divisional signals are amplified 51, and output E<SP>1</SP>w separated therefrom by waveform separating circuit 60 controls the production of gate pulses in multiphase pulse generator 61 which are used to gate the output of amplifier 51 in gate circuits 62, 63 and 64 to obtain output signals proportional to E<SP>1</SP>R, E<SP>1</SP>G and E<SP>1</SP>B at terminals 65R, 65G and 65B respectively. To avoid the production of moire fringes on a receiver screen a glass plate having a rough surface is located between the optical filter and the object to be televized when the film is exposed.
Patent GB-1527327-A (GB)
Title: Facsimile scanning systems
IPC: H04N1/12
Filed: 1977-05-13
Abstract: 1527327 Facsimile systems KOKUSAI DENSHIN DENWA CO Ltd 13 May 1977 [25 May 1976] 20249/77 Heading H4F A facsimile system comprises a carrier 1 which is reciprocable along a predetermined path to cause a reading head and a writing head to scan, both in a forward and reverse direction, an original paper 12 and a heat sensitive copy paper 31 respectively, and a flexible optical fibre assembly which forms part of the reading and writing heads and which has one end mounted on said carrier. The reading head comprises a plurality of optical fibres 8 having their ends remote from the carrier positioned adjacent a light source 11 and a thinner fibre having its end which is remote from the carrier positioned adjacent a light detector 13, the fibres of the reading head having their other ends positioned adjacent the original paper so that, in operation, the scanned paper is illuminated by light from source 11 and detector 13 receives light reflected from the paper. The writing head comprises an optical fibre 100 having its end which is remote from the carrier positioned adjacent the output of a laser beam source 101 which is arranged to provide a laser beam modulated in accordance with the pattern to be reproduced by the writing head. The other end of the fibre 100 is carried by carrier 1 adjacent the heat sensitive copy paper 31. A pulse motor 2 is operative to drive a belt 3 on which the carrier is supported. An alternative supporting arrangement for the carrier and wherein the drive is effected by electromagnetic means is described with reference to Fig. 5, not shown. The facsimile system is operative in receiving, transmission and local modes. The transmission operation is initiated by the insertion of the original paper 12. The receiving operation is initiated on reception of a synchronization signal at input terminal 22.
Patent GB-280635-A (GB)
Title: Improvements in or relating to the ventilation and cooling of dynamos, electric motors and similar machines
IPC: H02K5/20
Filed: 1926-08-17
Abstract: 280,635. Chitty, H. Aug. 17, 1926. Casings. - The casing of a dynamo-electric machine is formed with a number of peripheral slots separated by ribs forming cooling-surfaces. The casing may be of approximately square section, as shown, and the ribs c may extend into the spaces b in the angles of the square to increase the cooling-surface.
Patent GB-692723-A (GB)
Title: Liquid fuel injection pumps
Inventor: EVANS FRASER MACKIE
IPC: F02D1/12
Filed: 1950-08-16
Abstract: 692,723. Fuel-injection pumps. C.A.V., Ltd. July 18, 1951 [Aug. 16, 1950], No. 20311/50. Class 102 (i). In a fuel-injection pump, delivery commences when the top of the piston closes the inlet ports j and ceases when the pump chamber g is connected to the spill chamber o by a groove w emerging from the sleeve r; the groove w communicates with ports u, v, a non-return valve x being placed in the port u. The sleeve r is pressed by a spring t against a stop q and the spill chamber o is connected to the inlet side of the pump through a port y controlled by a throttle valve 2. When, due to the increase in speed of the pump, the pressure in the spill chamber increases, the sleeve r is moved downwards against the spring t to cause a reduction in the pump delivery. The throttle valve 2 or the spring t may be adjusted to adjust the pressure at which the sleeve is moved. Alternatively a spring-loaded piston may be subjected to the pressure in the spill chamber and connected to the sleeve. The pump may be of the type wherein the piston rotates and acts as a distributer to the engine cylinders.
Patent GB-499385-A (GB)
Title: Improvements in and relating to the automatic control of washing and other machines
IPC: D06F33/02
Filed: 1937-07-22
Abstract: 499,385. Valve-control in washing- machines. BROCKBANK, A. P., TANQUERAY, D. Y. B., and BAKER PERKINS, Ltd. July 22, 1937, No. 20369. Addition to 469,408. Drawings to Specification. [Class 138 (ii)] In an automatic control for the valves supplying various detergent and other liquids to a washing-machine through a common pipe or manifold and a measuring device such as a meter or pump, the opening of the valves being controlled by a timing element, a quantity of flushing water is passed through the pipe or manifold and the measuring device immediately after each liquid delivery operation has taken place, whereby no detergent &c. solution is left in the manifold and meter so that precisely the intended predetermined amount of detergent &c. is always admitted to the washing- machine and no admixture between the various solutions occurs. To prevent reverse flow of air through the meter and manifold after passage of the detergent &c. solutions, a valve is positioned adjacent the outlet from the meter and is arranged to be opened only when liquid is being passed through the manifold. The invention is described with special reference to the controller described in Specification 469,408 wherein the timing device is driven by a motor until a valve is opened, whereupon the motor is switched out and the timing device is driven by the measuring device until after the predetermined quantity of liquid has been passed, when the motor again takes up the drive. The additional valve adjacent the outlet of the meter may be controlled directly from the timing device or indirectly therefrom upon the establishment, by the timing device, of the circuits controlling the flushing or supply valves.