baber/WOPTO huggingface dataset:
Patent GB-719976-A (GB)
Title: Improvements in or relating to circuits for producing current of saw-tooth waveform
IPC: H03K4/28
Filed: 1952-08-28
Abstract: 719,976. Saw-tooth generating circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Aug. 28, 1952 [Aug. 31, 1951], No. 21643/52. Class 40 (6) In a saw tooth generator which feeds deflection coils through a transformer connected to a driver valve and in which the H.T. voltage for the anode of the valve is in part supplied by a capacitor in series with the anode and charged through a rectifier, an alternating voltage from a secondary winding of the transformer is fed to the screen grid to increase the screen grid voltage during the long stroke of the saw tooth wave. The Figure shows a conventional saw tooth generator feeding deflection coils 8 but modified in that voltage across the secondary winding is added to the H.T. supply to the screen grid. This connection in addition to providing a substantially constant increase of screen grid H.T. voltage, serves to damp out ringing in the deflection coils and reduces the screen-grid H.T. voltage during the flyback, thus avoiding the necessity of a negative pulse in the control grid input wave. The screen grid can alternatively be connected to a separate secondary on the transformer (Fig. 3, not shown) and a parallel connected resistor and capacitor in series with the screen grid may reduce the voltage to the desired value. It is suggested that an increased screen grid voltage could alternatively be derived from a separate rectifier and condenser network connected to an auxiliary winding on the transformer.
Patent GB-444625-A (GB)
Title: Improvements relating to the manufacture of footwear
IPC: A43B13/00
Filed: 1934-07-24
Abstract: 444,625. Insoles and soles for boots and shoes; cutting. MACCARONE, F., 2084, Ocean Parkway, Brooklyn, New York, U.S.A. July 24, 1934, No. 21677. Convention date, April 4. Addition to 440,874. [Class 17 (ii)] [See also Group VIII] An outsole and a complementary insole are formed from a single thickness by depressing a sole-shaped blank over a predetermined area, by subjecting it to a pressure roll in contact with a recessed die, and, as the blank leaves the roll, splitting it above the level of the depressed area. The sole-shaped blank 15 is fed between presser rolls 16, e.g. of a leather splitting machine, together with a recessed die 10, and, as the blank leaves the rolls, it is split by a knife 17 above the level of the depressed portion. The undepressed portion of the blank 15 is allowed to re-expand after compression between the rolls 16 and before it is split. The blank 15 is held against a stop 13, which may be reversible, so that the same die 10 may be used for both right and left soles. The die 10 is of incompressible material such as hard rubber, and the recess therein may extend . through its thickness to form an aperture 11 with bevelled sides. The depressed portion of the blank may be permitted or caused to be restored to its normal undepressed condition.
Patent GB-726042-A (GB)
Title: An adjustable reclining chair or the like article of furniture
IPC: A47C1/0355
Filed: 1953-08-06
Abstract: 726,042. Seats. LORENZ, A. Aug. 6, 1953 [Aug. 15, 1952], No. 21701/53. Class 52 (2). An adjustable reclining chair, settee, &c. having its rocking movements controlled by a constrained linkage including the seat and back or extensions thereof is provided with a leg rest in operative connection with the linkage such that when the chair &c. is moved, by the occupant, to fully reclined position the leg rest is not only brought up to support the occupant's legs but is moved forwardly from the seat so that full support of the legs of a tall person may be assured. As shown in Figs. 1 and 2, the seat 36 and back 30 are mounted on fixed pivots 34 on the support 20 and the movable links comprise back extension 32, lower link 42, guiding link 48 pivoted to the support 20 at 52. The leg support 54 is carried by an extension 58 of the link 42 and by a link 64, the extension 58 and link 64 being pivoted to a lever or link 60 having an extension 38 pivoted to the seat at 40. Fig. 2 shows the chair in fully reclined position, wherein the leg rest 54 is substantially horizontal and moved forwardly from the seat 36. Fig. 12 shows a chair having integral seat and back 530, 536 pivoted to the support 520 at 534. In this case the lower link is in two parts 542, 586, their adjacent ends being pivoted as shown to the guiding link 504 which is pivoted on the support 520 at 506. The action and linkage of the leg rest 554 is similar to that shown in Figs. 1 and 2. Various other modifications of the mounting and linkage of the chair with its leg rest are described in the Specification.
Patent GB-191700-A (GB)
Title: Improvements in the arming of aeroplanes
IPC: B64D7/02
Filed: 1922-08-09
Abstract: 191,700. Schneider, J. J. M. A. E. Jan. 13, 1922, [Convention datel. Mountings for use on aircraft. - Relates to mountings arranged in fixed gun-houses on aircraft. According to the invention, the gun F and its cradle are swivelled on vertical pivot pins p in an encircling vertical frame P provided with elevating trunnions P<1> mounted in bearings in a rectangular horizontal frame I, which is traversible on a roller race c by means of a worm-gear I<1>, I<2>, I'. The frame is guided by flanges i and by one or more rollers, additional to the rollers n, supported by lateral arms on the frame and engaging fixed arcuate slotted guides. Elevating-gear P<2> P<5> and a supplementary training-gear f, f<1>, f<5> are provided. The latter gear, which is operated through a flexible shaft f<4>, rocks the gun and cradle about the pivot pins p. The Specification as open to inspection under Sect. 91 (3) (a) describes the invention as an improvement in the invention described in Specification 158,525. This description does not appear in the Specification as accepted
Patent GB-575430-A (GB)
Title: Improvements in and relating to high frequency antennae
IPC: H01Q21/10
Filed: 1943-12-29
Abstract: 575,430. Aerials. BRITISH THOMSONHOUSTON CO., Ltd. Dec. 29, 1943, No. 21778. Convention date, Dec. 31, 1942. [Class 40 (v)] In a colinear aerial array, the half-wavelength phase-inverting section, formed as shortcircuited quarter-wave lines, and also the quarter-wave matching transformers coupling the aerial to the feed lines, are so disposed by forming them into loops, that substantially no current producing undesired radiation flows in them, as a result of induction from the radiating elements of the array. The array shown in Fig. 1 comprises two radiating assemblies 10 and 11, each having five half-wave colinear elements 12, coupled by phase-inverting sections 13 which are composed of conductors approximately one half-wavelength long, folded to provide adjacent parallel members which are formed into substantially circular loops so that voltages induced in diametrically opposite portions of the loops cancel out. Each assembly 10 and 11 is energized at its mid-point, from interconnecting lines 14, 15 through impedance matching sections 17, 18 which are also formed into loops as shown in Fig. 5, the spacing of the conductors 17, 18 being adjustable by means of suitable joints 21, 22 and 24, 25, 26 in the radiating elements 12a, 12b and the bars 23 which terminate the coupling lines. The loops formed by the inverting and matching sections are preferably so disposed that a line drawn through the centre of a loop and the axis of the aerial element, to which it is connected lies at an angle of 45 degrees to the horizontal. The radiating assemblies 10, 11 are spaced three-quarters of a wavelength apart in a horizontal plane and the interconnecting. lines 14, 15 which are disposed out of the plane of the assemblies, to substantially eliminate reflection by the lines in the horizontal direction, are fed at such a point that assembly 10 is energized 90 degrees in advance of assembly 11 and acts effectively as a director, maximum radiation being in the direction of arrow 31. In order to provide matching between the transmission line 30 and the array, the transmission line is terminated in conductors 32, 33 which are adjustably connected to the lines 14, 15 by means of suitable straps or bars 34, 35 similar to bars 23 shown in Fig. 5. A housing 38 preferably of conducting material encloses the end of line 30 and the impedance matching means and couplings to lines 14, 15 and an earthed quarter-wave sleeve 36 connected to the outer conductor of line 30 at its lower end provides a balanced output from the line to the impedance matching device.
Patent GB-613025-A (GB)
Title: Improvements in and relating to electric heaters and the manufacture thereof
IPC: H05B3/06
Filed: 1945-08-24
Abstract: 613,025. Electric resistance heaters. CALDWELL, P. G. Aug. 24, 1945, Nos. 21821 and 27083. [Class 39 (iii)] [Also in Group XXXVI] An end-construction for a heating element mounted in a support comprises a terminal rod 2 which is connected to the resistor 1 and passed through a tough deformable insulator 7 swaged in the sheath 4 which is deformed by a metal ring 20 to secure it tightly to the insulator. A nut 6 on the terminal rod positions the insulator which is shouldered to receive the sheath and a cap 9 secured on the terminal rod by a nut 10. The end construction is held in a passage 15 in the support which has a chamber 16 provided with an abutment against which the ring 20 is forced and thereby tightened around the sheath by a plug 18 screwing into the chamber threads 17. Compound 30 forms a leak-proof seal on the plug. Alternatively (Fig. 2, not shown) the sheath has two securing rings spaced apart by a sleeve. The plug may be brazed or soldered to the sheath. According to the Provisional Specifications the insulator may be screwed into the sheath.
Patent GB-1307561-A (GB)
Title: Electrical circuit  arrangements in motor vehicles
IPC: F02N11/08
Filed: 1970-05-06
Abstract: 1307561 Starter motor control BAYERISCHE MOTOREN WERKE AG 6 May 1970 [6 May 1969] 21831/70 Heading H2H  A device for actuating a starter motor ensures that the starter motor is automatically disconnected when the engine, being started, starts to drive a generator. The starter motor 15 is connected to its source of power by means of relay contacts 3. In series with the relay coil 2 is a transistor 4 and a switch 16. When switch 16 is depressed relay 3 connects the starter motor 15 to the source 12 of power. When the engine starts and turns generator 14 sufficiently fast, an E.M.F. is produced which biases transistor 4 to the off condition thereby releasing relay 2, and switching off the starter motor 15.
Patent GB-1341152-A (GB)
Title: Filtering pipette
IPC: B01L3/02
Filed: 1972-05-10
Abstract: 1341152 Pipette; filtering pipette WARNERLAMBERT CO 10 May 1972 [12 May 1971] 21844/72 Headings B1X and BID A filtering pipette comprises a resilient cylindrical body 10 tapered at one end to form a narrow opening 12, and a detachable, generally cylindrical cap 15 attached to the tapered cylindrical body at the end opposite to the tapered end, seating means being formed between the body and the cap when joined together and a filter disc 21 mounted in said seat and held in position by the mutual action of the body and the cap. The body and cap may be of polyethylene, polypropylene, nylon or cellulose acetate, propionate or butyrate. The filter disc may be of filter-paper or woven glass fibres.
Patent GB-1105573-A (GB)
Title: Foamed plastics materials and process for making them
IPC: C08F8/32
Filed: 1965-05-24
Abstract: Foamed synthetic resins are produced by reacting together a telomer having a low softening point and containing units of a monomer which has a hydrogen atom which is directly bonded to carbon and is activated by two electron-attracting groups and units of a copolymerizable monomer, and the condensation product of an aldehyde and a polyfunctional amine, or a mixture of the aldehyde and the polyfunctional amine or a salt thereof, in the presence of an inert volatile liquid which is vaporized during the course of the reaction. Suitable telomers include as the reactive component units of an allyl or vinyl ester of a b -ketocarboxylic acid, e.g. acetoacetic acid, or of malonic acid, cyanoacetic acid, an alkylmalonic acid, p-nitrophenylacetic acid, benzoylacetic acid, o-nitrophenyl-a -hydroxyacetic acid, pyruvic acid, benzoylmethylmalonic acid, an a -alkylacetoacetic acid or 2,3-dicarboxypropanoic acid.  Suitable monomers copolymerizable therewith include vinyl esters, e.g. vinyl acetate, styrene, acrylic and methacrylic esters, ethylene and vinyl chloride.  Specified polyamines are ethylene, propylene and butylene diamines, hexamethylene diamine, piperazine and its derivatives and ethylene glycol bis g -aminopropyl ether.  The preferred aldehyde is formaldehyde, but acetaldehyde or crotonaldehyde, or a mixture of one of these with formaldehyde, may be used.  A surface-active agent, e.g. a siloxane/ethylene oxide or ethylene oxide/propylene oxide block copolymer may be used.  The preferred blowing agents are halogenated alkanes.
Patent GB-575121-A (GB)
Title: Improvements relating to gas fires
IPC: F24C3/04
Filed: 1944-11-08
Abstract: 575,121. Gas fires. RADIATION, Ltd.. STRINGER, W. L., and EVANS, U. C. L. Nov. 8, 1944, No. 21985. [Class 126] An interception chamber located between the fire and the chimney is fitted with means to secure a non - turbulent draught in order to minimize "chimney - pull." As shown, the chamber a is incorporated with the rear of the fire outlet. Air from the room enters the chamber through a front opening e and the chamber is divided into shallow passages to prevent turbulence by plates g; a protuberence h is provided to produce a venturi effect. In a modification, the chamber is separate from the fire.
Patent GB-461950-A (GB)
Title: Improvements in flooring units for swimming bath dressing rooms and cabins
IPC: E04H3/16
Filed: 1936-08-11
Abstract: 461,950. Floor blocks. TYLDESLEY, F., and COCKRELL, J. H. Aug. 11, 1936, No. 22056. [Classes 20 (i), 20 (iv), and 87 (i)] A quick-drying floor unit for swimming-bath dressing rooms is provided beneath with tubelike passages d for the transmission of a heating medium, and in its surface with drainage holes which lead to a cavity air space e. The temperature at the surface of the unit may be varied by means of a shutter-type regulator which is provided at one end of the unit and which controls the amount of cool air admitted to the air space. Drilled flanges are provided at the ends of the passages d whereby units can be connected end to end. Where passageways are arranged beneath the dressing rooms as shown, the units rest with their side flanges upon the masonry h and with their under surfaces upon rollers g which are mounted on tie rods f.
Patent GB-409180-A (GB)
Title: Improvements in electrical fixture supporting and connecting devices
IPC: F21V21/03
Filed: 1933-08-05
Abstract: 409,180. Electric light fixtures; electric-lamp holders. KELSO, S., 25, Sorauren Avenue, Toronto, Canada. Aug. 5, 1933, No. 22075. [Classes 39 (ii) and 75 (iii).] A lighting fixture comprises a disconnectible electric coupling 6, 15, one part 6 of which is mounted in a housing 2 secured to a ceiling or wall and the other part 15 attached to the lamp fitting 9. The part 6 is carried by a removable member 5 which, after attachment of the leads 3, 4, is secured in the housing 2 by means of projections 18 and bayonet slots 17, the slack of the leads being accommodated in the housing. The fitting leads 11, 12 are attached to the contacts 13, 14 in the part 15 and the slack received in a canopy 10 which, after the two parts of the coupling are engaged, is fastened to the housing 2 by pins 19 that enter the slots 17. The coupling may be of any type, e.g., the Edison screw socket and centre contact type, by means of which a temporary light may be obtained by inserting a lamp in the part 6 of the coupling.
Patent GB-429714-A (GB)
Title: Improvements in or relating to means for discharging fluid pressure containers
IPC: F17C7/02
Filed: 1934-07-30
Abstract: 429,714. Fluid - pressure containers. JACKSON, L. MELLERSH-, 28, Southampton Buildings, Chancery Lane, London.-(C-OTwo Fire Equipment Co. ; 560, Belmont Avenue, New Jersey, U.S.A.) July 30, 1934, No. 22181. [Class 8 (ii)] A container for fluid under pressure, e.g. liquefied carbon dioxide, is sealed by a disc 14 in which a flap is cut by a tubu. lar cutter 90 for release of the fluid, and bent up by the fluid pressure against a shoulder formed on the cutter. The stem of the cutter is formed with a screw-threaded portion 42 by which the cutter is advanced and turned ; the advance uncovers a transverse bore in the threaded portion which allows fluid to pass up the stem and escape above a piston 35 the pressure on which assists the advance. A shoulder 93 on the cutter forms a stop-limiting the motion. A valve 21 is located above the outlet tube 18 in the container and is held in open position by the fluid pressure on cutting the disc ; should the neck break below the shoulder 24 which normally engages vanes 22 on the valve, the valve is forced against a shoulder 25 preventing escape of fluid.
Patent GB-1519927-A (GB)
Title: Wrist joint prosthesis
IPC: A61F2/00
Filed: 1977-05-26
Abstract: 1519927 Endoprosthesis wrist joint LAURE PROSTHETICS INC 26 May 1977 [12 Oct 1976] 22365/77 Heading A5R An endoprosthetic wrist joint comprises a socket 1; a cup 2 snap-fitted into the socket and pivotal in one plane by virtue of the engagement of a cup stem 12 in a socket bottom slot 9; and a ball 3, snap fitted into the cup and pivotal in a plane at right angles to the first plane by virtue of the engagement of a ball stem 18 in a cup bottom slot 17. The socket and ball are provided with prongs 7, 22, 23 for engagement in the arm and hand bones.
Patent GB-317218-A (GB)
Title: Apparatus for opening tins and the like
IPC: B67B7/46
Filed: 1928-08-02
Abstract: 317,218. Sanders, A. Aug. 2, 1928, Opening by cutting.-Relates to openers comprising a rotary arm carrying an adjustable cutter, the arm being simultaneously given an axial movement by screw means, so that a drawing cut is produced. In the construction shown in Fig. 1 a supporting frame 1 carries a crank 13 which effects through gears 10, 11, 12 rotation of a gear-wheel 8 which supports a verticallymovable spring-controlled cutter 4, laterally adjustable by a screwed spindle 7. The tin 3 to be operated upon is held in a clamping device composed of levers 2, Fig. 2, pivoted to a ring 15 rotation of which, relative to a series of slotguides 16, by means of a crank 18, causes adjustment of the clamping levers in iris diaphragm fashion. In operation, the wheel 8 being lowered until the knife rests just above the tin, the cutter is driven in to the end by a blow on the knob 19 and held down by means of a catch 21. By turning the crank the cutter is rotated to out out the end at the same time gradually raised owing to the hub of the wheel 8 being mounted on the stationary screw-spindle 9. The cutter is freed from the catch after opening the tin, and the wheel 8 descends to its original position owing to the idle movement of pinion 10, which is driven only in one direction by the crank. The construction shown in Figs. 3 and 4, intended particularly for removing the projecting edges of already opened tins, comprises a frame supporting a crank 29 turning a screwed spindle 28 carrying a rotary arm on which a cutter 31 is adjustably mounted. The cutter may be hookshaped or outwardly cranked, as shown. The tin is held in clamping-jaws 23, 24 held closed by fastening-means 25; a form is described in which adapter-rings may be inserted between the jaws and the tin to enable smaller tins to be treated.
Patent GB-512087-A (GB)
Title: Improvements relating to means for securing curtain rails to supporting brackets
IPC: A47H1/124
Filed: 1938-07-28
Abstract: 512,087. Curtain rail brackets. HARRISON (BIRMINGHAM), Ltd., and HARRISON, S. C. July 28, 1938, No. 22441. [Class 52 (v)] A curtain rail f is secured to its bracket by a clamping member a slotted to receive the rail, slidable on the bracket arm c and provided with a screw g which engages the arm c to rock the member a about a fulcrum h.
Patent GB-317473-A (GB)
Title: Improvements in or relating to grinding or abrading machines
IPC: B24B5/10
Filed: 1929-07-22
Abstract: 317,473. Cincinnati Grinders, Inc., (Assignees of Harrison, R. E. W., Haas, F. S., and Binns, G. W.). Aug. 17, 1928, [Convention date]. Chucks.-An internal grinding machine for grinding brake drums &c. consists of a bed having mounted thereon a head for the grinding-wheel 28, the work being mounted in a carrier 57 on a slide 200 movable on the bed towards and from the wheel 28. The work 73 is carried in a chuck 700 having a draw-in collet 74 to engage the hub 76 of the work, the chuckbeing carried by a spindle 67 mounted in antifriction bearings 66 in a part 65 of the carrier 57 and driven through worm-gearing 68, 69. The collet 74 is actuated by a rod 75 connected to a piston 78 in a cylinder 77, the piston being moved by compressed air. A modified chuck has pivoted clamp-fixtures, in place of the collet, to engage with a flange on the hub of the work.
Patent GB-816274-A (GB)
Title: Knife sharpener
Inventor: SPEAR WALTER A
IPC: B24B3/54
Filed: 1957-07-16
Abstract: 816,274. Universal joints. NUTONE Inc. July 16, 1957, No. 22531/57. Class 80 (2). [Also in Group XXIII] A flexible coupling 31 for connecting the driven shaft 18 of a knife-sharpener (see Group XXIII) to a drive-shaft 13 comprises a drive cup 32 which may be secured to the shaft 18 by swaging over a square end on the shaft after its insertion into a corresponding aperture in the cup. A resilient collar 33 and a drive coupler 34 formed with a flange 35 are both mounted within the drive cup 32 and a rim 36 thereon is swaged into engagement with the flange. The coupler 34 may be formed with a hexagonal socket for engagement with the drive-shaft 13.
Patent GB-912948-A (GB)
Title: Improvements in and relating to driving mechanisms for electric circuit breakers
IPC: H01H3/30
Filed: 1961-06-22
Abstract: 912,948. Switches held set and freed mechanically. COQ, N. V. June 22, 1961 [July 2, 1960], No. 22676/61. Class 38 (5). In a switch similar to that of Specification 753,754, operation of the opening button 33a is prevented unless the opening spring 9 is tensioned and the switch is closed. Similarly, operation of a closing button 40 is prevented unless the closing spring 14 is tensioned. The button 33a acts to release a spring biased lever 28, movement of which to open the switch is prevented by links 41 ... 43 unless the contacts are closed. The button 40 likewise acts to release a lever 34, movement of which to close the switch is prevented by links 46...48 unless the spring 14 is strained and an intermediate member 10 connected thereto is latched at 26, 27. The member 10 is moved to its latched position to tension the springs by a piston 17.
Patent GB-1412529-A (GB)
Title: Image-receiving material for a silver salt diffusion- transfer process
IPC: G03C8/28
Filed: 1973-05-11
Abstract: 1412529 Photographic material FUJI PHOTO FILM CO Ltd 11 May 1973 [11 May 1972] 22695/73 Heading G2C An image-receiving material for the silver salt diffusion transfer process comprises (a) an unhydrolyzed cellulose ester layer which contains at least one fluorescent whitening agent and (b) a superposed cellulose ester layer which is substantially free of fluorescent whitening agents and of which at least a surface stratum is hydrolyzed and contains physical development nuclei. Layer (a) may be on a support. An unhydrolyzed cellulose ester layer free from fluorescent whitening agents and/or an acidic layer may be between layers (a) and (b). A silver halide emulsion layer may be coated on layer (b).