baber/WOPTO huggingface dataset:
Patent GB-713108-A (GB)
Title: Improved method and means for making slide fasteners
IPC: B29C45/14
Filed: 1951-12-11
Abstract: 713,108. Moulding. sliding-clasp fasteners. RI-RI-WERK AKT.-GES. Dec. 11, 1951 [Dec. 14, 1950], No. 28981/51, Class 87 (2) [Also in Group XXV] In a method of moulding sliding-clasp fasteners in which a stringer tape is clamped in a dieblock and fastener elements are injectionmoulded in a row along one edge of the tape, that portion of the tape that is disposed outside the cavities in which the elements are moulded is stretched prior to and during the moulding by means disposed in the die-block. This stretching compensates for shrinkage of the tape after moulding. Figs. 1, 2 and 3 show a die block comprising mating dies 1, 2 having shallow recesses 11, 12 which receive the flat parts of two stringer tapes. These recesses have rack-shaped parts 16, 17 which, when the dies 1, 2 are pressed together, clamp the tapes and stretch them. In a modification, Fig. 4, the rack-shaped parts are replaced by undulating parts 16<1>. 17<1>. The parts 16, 17 are separate from the dies, the part 16 being secured to die 1 by screws 18 and the part 17 to the die 2 by grub-screws 19 and springs 20. As shown in Fig. 3, the parts 17 have been pushed, against the action of their springs, towards parts 16 to clamp the tape. This pushing is effected by studs 25 forming part of an injection-moulding machine. In modifications both parts 16, 17 may be resiliently mounted or may be fixed to or integral with the dies. The tape beads are accommodated in channels 15 in the dies. The plastic material is injected through gate 7, sprue 8 and runners 9 into the mould cavities 5, 6.
Patent GB-225857-A (GB)
Title: Improvements in or relating to fret-saw machines
IPC: B23D49/00
Filed: 1924-12-03
Abstract: 225,857. Nicaise, L., (Assignee of Cromps, L.). Dec. 3, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Reciprocating-saw machines. - The return stroke is effected by an adjustable spring 18 engaging a lever 16 attached to an arm 13 which is connected to the upper end of the blade by a leather strap 12 or the like. The ends of the blade are notched at 11<1>, bound with wire 11<2> and held by hooks 10 attached to slides 8 guided on the frame. A blade guide 19 is mounted as shown and can be lowered on to the work to hold it on the table.
Patent GB-429239-A (GB)
Title: Improved method for the reproduction of photographic multi-colour screen images
IPC: G03C7/04
Filed: 1934-10-10
Abstract: 429,239. Colour photography. SOC. LUMIERE, 82, Rue de Rivoli, Paris. Oct. 10, 1934, No. 29047. Convention date, Oct. 14, 1933. [Class 98 (ii)] Multi-colour screen images are reproduced by performing the exposure in three monochrome lights each corresponding to the maxima of transparency of the respective coloured elements of the screen, these lights being obtained by the use of monochromatic filters of the same tints as the screen elements. The orange screen may be dyed with a mixture of rose bengal and hydrazine yellow O, the green screen with a mixture of xylene blue VS and hydrazine yellow O, and the blue-violet screen of xylene blue VS and xylene red B. Specification 4932/07, [Class 98], is referred to.
Patent GB-159299-A (GB)
Title: Air- and water-mattresses and the like
IPC: B63C9/04
Filed: 1919-11-22
Abstract: 159,299. Stone, C. R. Nov. 22, 1919. Mattresses.-An air or water mattress comprises compartments, each separately inflatable. Fig. 1 shows the mattress divided into longitudinal compartments 1, each compartment being provided with a closed rubber tube 2 fitted with a valve 3. The tubes 3 are retained in place by the flaps 4 and buttons 5.
Patent GB-1220157-A (GB)
Title: Improvements in or relating to aircraft capable of horizontal, vertical and hovering flight
IPC: B64C11/00
Filed: 1968-06-18
Abstract: 1,220,157. V.T.O.L. aircraft. NORDAVIATION SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. 18 June, 1968 [19 June, 1967], No. 29068/68. Headings B7G and B7W.  An aircraft has two propulsion units 19, 20 mounted on tilting wings 21, 22 which are interlinked rigidly and tilt simultaneously about the pitch axis YY<SP>1</SP>, and hinged flaps in the discharge stream of each unit so arranged that the units are tilted by movement of the flaps. The flying controls for climbing and diving are connected to the flaps (Fig. 2, not shown), the linkage being arranged so that tilting of the units consequent to the movement of the flaps returns the flaps to the zero incidence position relative to the discharge stream. Differential action of the flaps 23, 24 causes them to differentially deflect the discharge streams, giving rise to the forces F6, F7 which act as a couple to turn the aircraft about the roll axis XX<SP>1</SP>; the angle of incidence α<SP>1</SP> of the wing and propeller combinations remains unchanged by the differential action on the flaps 23, 24.
Patent GB-154790-A (GB)
Title: Adjustable timber supporter for use in mines
IPC: E21D15/20
Filed: 1919-11-24
Abstract: 154,790. Griffiths, W. J. Nov. 24, 1919. Shoring.-An adjustable support for mine timbers consists of two members a, b, preferably of steel or iron, each having a band riveted thereto and embracing the other. The members are extended and fixed by means of a pawl d, and a series of notches e, e<1> at intervals of 3 inches. One member is forked at f to fix into the ground and the other end has a prong g to engage the timber.
Patent GB-1450035-A (GB)
Title: Mixing and or comminuting apparatus
IPC: B05B1/26
Filed: 1972-06-22
Abstract: 1450035 Mixing apparatus, comminuting apparatus TWEEDY OF BURNLEY Ltd 21 Sept 1973 [22 June 1972] 29215/72 Headings B1C and B2A A mixing and/or comminuting apparatus comprises a chamber 10 housing means, such as rotor 12, for mixing and/or comminuting material fed thereto and two or more waterinlet nozzles 40-44 arranged near the top of the chamber to direct jets of water into the chamber so that the jets collide to create a water spray which cleans the inside surfaces of the chamber including that of lid 30. Any number of the nozzles may be fixed or angularly adjustably mounted in the chamber wall which may be frusto conical, or in a cylindrical extension collar 26 to desirably provide jets which are angled slightly downwardly with respect to the horizontal. A water supply pipe 64 is connected to a manifold 60 secured directly to one nozzle and indirectly via pipes 66, 68 to. the other nozzles in the preferred embodiment. Lid, 30 which may have a flat, convex or concave undersurface and a handle 39, is hinged at 36 and has a seal 32.
Patent GB-298615-A (GB)
IPC: G03B21/00
Filed: 1928-10-11
Abstract: 298,615. K÷hler, W. Oct. 12, 1927, [Convention date]. Optical - projection apparatus.-In the projection of assemblages of image to form a single picture on one screen, the images are projected with vignetted edges which overlap. As shown, the picture on the screen comprises three images 9 projected by projectors 10 along axes oblique to the screen. The images on the diapositives have overlapping fields and masks 11 may be so placed as to produce vignetted projected images, and secure uniform lighting of the picture. Alternatively, the diapositive images, may be vignetted. In projecting stage scenery, two pictures may be projected on to two screens spaced apart to provide a passage for actors, and the projection beams may be diverted by mirrors so that. the actors do not pass through them. According to the Specification as open to inspection under Sect. 91 (3) (a) the diapositives may be normal to the projection axis, and may be produced by means of a camera placed in a position relative to the original picture corresponding to that to be occupied by the projector relative to the screen. This subject-matter does not appear in the Specification as accepted.
Patent GB-926770-A (GB)
Title: Electric arc welding
IPC: B23K9/007
Filed: 1960-08-26
Abstract: 926,770. Control of D.C. motors. WESTINGHOUSE ELECTRIC CORPORATION. Aug. 26, 1960 [Sept. 4, 1959], No. 29481/60. Class 38 (3). [Also in Group XXXV]  An arc-welding system for use in spot-welding has a consumable electrode E which is driven towards the work W by a motor M the duration of the welding operation being timed by a timer 2TD, operation of which timer is initiated by the striking of an arc between the electrode E and the work W. In the standby condition of the apparatus the A.C. supply conductors L1-L3 and the auxiliary conductors 2L1, 2L2 are energized. Should it be necessary to advance the electrode E into a position ready for welding an inching switch S1 is closed whereby the motor M is energized from a lowvoltage supply DL1, DL2. After a control switch SW1 has been placed in the " spot weld " position Sp a spot weld is initiated by operation of a starting switch SS to actuate a relay 1TD. Relay 1CR is then energized over contact 1TDc to close contact ICRa whereupon potential appears on the welding conductors LE, LW. Closure of contact 1TDa energizes the motor M from the conductors DL1, DL2 so that the electrode E is driven on to the work W at a slow speed. When the electrode contacts the work relay 3CR is energized and when an arc appears between electrode and work a relay 4CR is energized. Closure of contact 4CRa energizes relay 5CR to close contact 6CRc which energizes relay 2CR to open contact 2CRb whereby the motor is removed from the conductors DL1, DL2 and connected across the arc to feed the electrode to the arc at a rate depending on the arc voltage. A network N having a capacitor 2C charged from conductors 2L1, 2L2 by the grid current of a thyratron 1TU in the timer 2TD is connected between grid and cathode of the thyratron by closure of contact 4CRa to begin the timing out of the weld operation by the discharging capacitor C. After discharge thereof thyratron iTU conducts to energize relay 6CR. Contact 6CRb opens to de-energize the motor M and contact 6CRc opens to de-energize relay 1TD. A capacitor 1C maintains relay 1TD energized for a period to allow burn-back of the electrode E whereupon relays 1TD and 1CR drop out to remove the supply from conductors LE, LW. The system is such that it cannot reset for a further spot weld unless switch SS is released and release of switch SS does not affect the welding operation once it has been initiated. The supply unit fed by conductors L1-L3 may be either a constant current type, as in Fig. 1, or a constant voltage type as in Fig. 2 ( not shown), in which apparatus the motor M is supplied independently of the arc both during starting and welding. Specifications 687,819 and 876,864 are referred to.
Patent GB-1148510-A (GB)
Title: Process for the production of flame resistant polyols for use in preparing polyurethane foams
IPC: C07F9/141
Filed: 1966-06-30
Abstract: 1,148,510. Cyclic phosphite esters and phosphite ester intermediates therefor. MITSUI KAGAKU KOGYU K.K. 30 June, 1966 [3 July, 1965 (2)], No. 29486/66. Heading C2C. [Also in Division C3] Phosphorus-containing polyols of the projected formula in which R is -CH 2 CH 2 OCH 2 CH 2 , -CH 2 CH 2 - OCH 2 CH(CH 3 )- or -CH 2 CH(CH 3 )OCH 2 CH- (CH 3 )-, n is 0 or an integer from 1 to 3 and m is an integer from 1 to 8 are prepared by the intermolecular condensation of a tris-dialkylene glycol phosphite P(OROH) 3 . The condensation may be carried out at 90-180 C. under a pressure not greater than 10 mm. Hg using as catalyst from 0À01 to 0À2% by wt. of an alcoholate, hydroxide, carbonate or acetate of an alkali metal. The tris-dialkylene phosphite starting material may be prepaerd by reaction of PCl 3  with a dialkylene glycol monoalkalialcoholate or by condensation of a dialkylene glycol with triphenyl phosphite.
Patent GB-891379-A (GB)
Title: Improvements in safety locking means for amusement ride cars
IPC: A63G1/00
Filed: 1960-08-26
Abstract: 891,379. Amusement apparatus. BARTLETT, M. Aug. 26, 1960, No. 29516/60. Class 132(1) [Also in Group XXV] In an amusement ride car, a safety closure is releasably locked in closed position by a first locking member mounted on the car and a second locking member is moved, at a predetermined speed of the car, by centrifugal force to lock the safety closure in closed position. As shown, a roundabout comprises a circular track with spaced raised parts over which car 1 on the end of an arm 2 passes as it proceeds round the track supported on a sprung undercarriage wheel 3. A tubular member 7 pivoted to the inner side of car 1 forms with a parallel member 8 a safety bar device biased to its open position by a spring 9. On the outer side 11 of car 1 is a device 12 consisting of a guide 13 with an open-ended recess 14 to receive a fixed bushing 15 on the end of member 7. A latch plate 16 pivoted adajcent guide 13 has a spring biased nose 18 which is deflected by bushing 15 as it enters the latch and returns to hold the bushing being manually releasable by means of handle 19. Premature release of the latch is prevented by a plate 20, with a circular aperture 21, secured externally of guide plate 13, and a rod 25 sliding in bushing 15 with a nose 26 which engages aperture 21. Rod 25 slides in bearings 24 in a liner 22 secured in rod 7, its movement being limited between a position where a plate 27 on its inner end engages the end of liner 22 and its outer end 26 projects and an inner position with a ring 28 on the rod engaging a ring 29 on the liner where end 26 is within the liner 22. Rod 25 slides outwards so that end 26 engages aperture 21 under the influence of centrifugal force and returns under the influence of gravity or some other restoring force when the centrifugal force is reduced.
Patent GB-1377440-A (GB)
Title: Vehicle suspension systems for tandem axles
IPC: B60G5/047
Filed: 1973-06-21
Abstract: 1377440 Tandem axle suspensions CHRYSLER UNITED KINGDOM Ltd 21 June 1973 [28 June 1972] 29593/73 Heading B7D In a tandem axle suspension comprising leaf springs 15, 16 and a balance beam 17 interconnecting the rearward ends of the springs to equalize the axle loads, an additional balance beam 21 is connected to the forward ends of the springs. The balance beams 17, 21 are mounted by pivots 18, 22 on a chassis side member 10, the beam 17, the springs 15, 16 and the balance beam 17 being located on the outside of the side member 10 and the beam 21 on the inside. The balance beam 17 is connected by links or shackles 19, 20 to the springs 15, 16 and the balance beam 21 is connected by links 24, 26 to first arms of bell crank levers 23, 25 each comprising a shaft rotatably mounted in the side member 10 and a second, longer arm connected to the spring 15, 16. The balance beams 17, 21 are pre-loaded by tie rods 27 to lower the maximum stresses occasioned in the beams during operation thereby enabling the weight of the beams to be reduced.
Patent GB-704459-A (GB)
Title: Improvements in or relating to guides or runways for sliding window panes
Inventor: HAWKINS FREDERICK WILLIAM
IPC: B60J10/04
Filed: 1950-12-04
Abstract: 704,459. Window frames. SILENT CHANNEL CO., Ltd. Nov. 26, 1951 [Dec. 4, 1950], No. 29639/50. Class 20 (3) The channel frame 1 of a runway for a sliding window 12 accommodates a guide groove strip 2 which by means of a strip spring 9 is afforded a limited displacement to maintain it in close contact with the edges of the pane, the resilient sides of the guide strip being urged into contact with the limbs of the channel frame. The groove strip shown has a rubber coated spring steel core 4 and beaded ends 6 reinforced with wire 13, the inner faces being .lined with moquette 7 the fabric of which extends to the outer faces of the strip. The strip spring is riveted to the base of the guide strip and its bowed free ends 9' ride smoothly against the base of the frame channel. Corner angles 11 may be located in the channel.
Patent GB-210516-A (GB)
Title: Improvements in or relating to ribbon-feeding mechanism for typewriters
IPC: B41J33/518
Filed: 1922-10-31
Abstract: 210,516. Brougham, F. J., (Addograph Co.). Oct. 31, 1922. Ink-ribbon mechanism; driving-mechanism.- In typewriters having a power-driven actuator for the type-bars, the actuator is connected to ratchet-mechanism for feeding the ink ribbon; the feeding-mechanism may comprise a shaft movable axially to reverse, the feed by means of an automatic snap-over device. A type-bar actuator, preferably driven by the mechanism described in Specification 25038/13, is connected by a link 16 to an arm 19 carrying a pawl 20 co-operating with a ratchet-wheel 21 on a revoluble and axiallymovable shaft 22 provided with two crown-wheels 24 for engaging crown-wheels 25 on the spoolshafts 26. Rocking arms 27 in the path of buttons on the ink ribbon are connected by a link 29 which is connected to a snap-over device by means of a link 30. The snap-over device consists of a U-lever 32 pivoted at 35 to a bracket 33, and connected by a spring 40 to a U-lever 36 which is pivoted at 36<1> to the bracket, and is formed with a fork 37 engaging a collar 38 on the shaft 22. 'When either of the arms 26 is rocked, the lever 32 carries the spring 40 from one side to the other of the pivot 36<1>, and the lever 36 snaps over, and moves the shaft 22 axially.
Patent GB-1037576-A (GB)
Title: Waste disposal unit
IPC: B65F1/06
Filed: 1964-07-24
Abstract: 1,037,576. Refuse receptacles. ALUMASC Ltd. and E. C. LEWIS. May 24, 1965 [July 24, 1964; Aug. 28, 1964; Jan. 2, 1965], Nos. 29787/64, 35276/64 and 206/65. Heading A4A. [Also in Division B5] The mouth of a plastic refuse bag 2 is permanently closed, e.g. by a heating strip 15, prior to removal of the filled bag from a container having a rear part 3, which may be wall mounted, and a hinged front cover 4, which is opened to a limited extent for the insertion of refuse into the bag, by a handle 14 against the action of spring 13. The bag is suspended in the container by studs 9 engaging eyelets in the bag, clips or pivoted locking catches 10 being provided. The cover 4 is detached for removal of a filled bag by disengagement of the pivot pins 31 and limit studs 27 from the slots 32 and 29 and disengagement of one end of the spring 13. To seal the bag the cover 22 is opened, automatically clamping the mouth of the bag between a heatresistant pad 17 and the heating strip 15 carried by a heat-resistant pad 16, and exposing a manually-operated time switch 19. An indicator lamp 20 and transformer 21 to obtain low voltage current from a mains supply, are included in the circuit. In modifications the mouth of a paper refuse bag is sealed by a heat-responsive adhesive or by stapling.
Patent GB-1479932-A (GB)
Title: Device for use in performing tests to determine the blood type of a donor
IPC: B01L3/14
Filed: 1974-07-05
Abstract: 1479932 Test tube mounting for centrifuge MEDICAL LABORATORY AUTOMATION INC 5 July 1974 [5 July 1973] 29949/74 Heading B2P [Also in Division G1] A receptacle 60 for mounting on a hub 61 of a centrifuge is formed to accept an integral member which comprises a plurality of testtube like elements or which is formed to receive a plurality of test-tube like elements disposed in parallel spaced apart relationship (see Group G1), cavities 62 in receptacle 60 receiving the test-tube like elements or test-tube receiving elements of the integral member.
Patent GB-981525-A (GB)
Title: Process for the manufacture of partially saponified polyvinyl esters
IPC: C08F8/12
Filed: 1961-08-18
Abstract: In a process for the manufacture of partially saponified polyvinyl esters by alcoholysis, a polyvinyl ester of a monocarboxylic acid which is dissolved in a solvent mixture containing at most 0.5% by weight of water, based on the total reaction mixture, and consisting of an alcohol and the ester formed by alcoholysis in a weight ratio of ester to alcohol of 50: 1 to 2.5: 1, is partially saponified by stirring at a temperature between 0 DEG  C. and the boiling-point of the mixture in the presence of 0.1 to 2% by weight, based on the weight of polyvinyl ester, of an alkali metal hydroxide and/or alcoholate. The polyvinyl ester may be polyvinyl acetate, formate, propionate, butyrate, stearate or benzoate; copolymers of vinyl acetate and vinyl propionate; or graft copolymers of vinyl acetate on polyethylene glycol or hydroxyethylated polypropylene glycol.  The preferred alcohol is methanol.  The preferred catalyst is sodium hydroxide.  Examples describe the partial saponification of (1 to 11) polyvinyl acetate and (12 to 15) graft polymers of vinyl acetate on polyethylene glycol in the presence of methanol, methyl acetate and sodium hydroxide; (16 to 18) polyvinyl acetate in the presence of ethanol, ethyl acetate and sodium hydroxide; and (19) polyvinyl acetate in the presence of isopropanol, isopropyl acetate and sodium hydroxide. In Example 6 a small proportion of water is present. Specifications 692,324 and 725,717 are referred to
Patent GB-520254-A (GB)
Title: Improvements in or relating to oscillation generating circuits
IPC: H03B5/10
Filed: 1938-10-17
Abstract: 520,254. Valve generating, modulating, and relaying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 17, 1938, No. 30067. Convention date, Oct. 16, 1937. [Class 40 (v)] An additional electrode is provided in a self excited oscillator valve which serves no function in the production of oscillations and has a biasing potential applied to it to maintain the amplitude of the oscillations constant, the biasing potential being produced from the oscillations in the tuned circuit. Fig. 1 shows an oscillator having the tank circuit 5 connected between the grid 3 and the anode with a bias derived from the grid leak 6 applied through a filter to the grid 10. A modulating source 14 may also be connected to the grid 10 and will not affect the controlling bias, the speed of control of which is determined by the time constant of impedances 7, 13. Instead of the valve'cathode being earthed the anode or the grid may be earthed, Figs. 2 and 3 (not shown), and a fixed bias source may be provided in series in the controlling circuit, Fig. 2a (not shown). A pentode may be used instead of a pentagrid type valve and the system used as a burglar alarm, Fig. 5, the antenna-ground capacity 21 and the consenser 22 forming a variable potentiometer across the tank circuit and controlling the energy fed to a remote carrier-operated relay. The controlling bias may be produced by amplifying the oscillations generated. Fig. 6 shows an amplifier 24 the output from which is applied to an attenuation network and to a rectifier 30 in the load circuit of which a resistance 31 is provided across which the controlling bias is taken. Modulation may be effected through condenser 13'. Fig. 7 shows an alarm comprising an oscillator 1 the bias of the grid 10 being controlled by the diode electrodes 36, 37. The anode supply is AC and the valves are so arranged that in one half of the cycle the valve 1 oscillates and determines the bias on the grid 37 which, in the next half cycle, controls the operation of relay 56. In a modification a three grid oscillator valve is used, Fig. 8 (not shown). Modulation by a condenser microphone may be effected by arranging the microphone as part of a potentiometer across the tank circuit and feeding the modulated direct current voltage to an output amplifier, Fig. 9 (not shown). Specification 454,059 is referred to. Reference has been directed by the Comptroller to Specification 498,807.