baber/WOPTO huggingface dataset:
Patent GB-497591-A (GB)
Title: Improvements in corsets
IPC: A41C1/08
Filed: 1937-06-21
Abstract: 497,591. Corsets. RYALL, S. D. June 21, 1937, No. 17191. [Class 141] A corset, which can be worn under a bathing costume, is made of waterproof material and provided with a crotch piece 3 which may be detachable, and with detachable suspenders 6.
Patent GB-273496-A (GB)
Title: Improvements in and relating to helicopters
IPC: B64C27/00
Filed: 1926-07-09
Abstract: 273,496. Calvert, G. W. July 9, 1926. Screw propellers.-A helicopter is provided with elevating propellers driven normally by one or more engines, but adapted to. be driven in the event of failure of the engines by means actuated by air pressure. The elevating propellers 16, constructed with upturned blades, are mounted on vertical spindles 19 driven through change-speed gearing 22, 24 from the main drive spindle 26 disposed axially of the machine. A collapsable fan-like propeller 78, 79 is also provided on a vertical spindle 66 and is adapted to drive the shaft 26 and hence the elevating propellers through bevel gearing 71, 72 which is normally disengaged. This auxiliary driving propeller is mounted with its lower portion on the tabular shaft 66 while its upper end is secured to a spindle 65 which is capable of limited longitudinal movement bv screw and nut gear 65<1>, 66', Fig. 8, to expand the fan propeller on the gears 71 and 72 being engaged. The propelling propellers 39 are also driven through variable-speed gearing from the main shaft 26.
Patent GB-547708-A (GB)
Title: Method of producing cast iron and compositions therefor
IPC: C21C1/00
Filed: 1940-12-04
Abstract: 547,708. Treating cast-iron; alloys. ELECTRO METALLURGICAL CO. Dec. 4, 1940, No. 17264. Convention date, Feb. 6, 1940. [Classes 72 and 82 (i)] To decrease the sensitivity of cast iron to variations in the rate of cooling during casting, a composition containing 25-85 per cent. of silicon, less than 65 of iron, either vanadium or titanium or both up to a total of 1-25 and 1-16 of calcium is added to a molten cast iron, the amount used being such as to increase the silicon content of the iron by about 0.05 to 1 per cent. The composition may also contain 1-25 per cent. of .manganese, part of the calcium, preferably less than half, may be replaced by one or more of the metals barium, strontium, magnesium and beryllium and a minor part of the titanium by cerium or thorium. In one method of making the cast iron, an iron containing less silicon than is desired is produced in a cupola and there are added shortly before casting, ferrosilicon and, simultaneously and in intimate association therewith, vanadium and calcium in an amount not exceeding 25 per cent. of the total addition of silicon, vanadium and calcium. Alloyed cast iron containing additions such as chromium. nickel and molybdenum may be similarly treated, and one or other of these elements may be added to the composition set out above. Specification 525,706 is referred to.
Patent GB-595576-A (GB)
Title: Improvements in the manufacture of artificial flowers
IPC: A41G1/00
Filed: 1945-07-06
Abstract: Artificial flowers are formed by injection moulding from a thermoplastic synthetic resin, e.g. polyvinyl chloride.  The flower may be moulded in one piece or as several connectible parts, which may be of different suitably coloured plastic materials.
Patent GB-1377928-A (GB)
Title: Camera shutter control system
IPC: G03B19/18
Filed: 1973-04-11
Abstract: 1377928 Cinematography BELL & HOWELL CO 11 April 1973 17353/73 Heading G2E A cine camera includes a motor driven rotary shutter 40 and a switch ( movable plate 60 and contact 62) which when closed by depressing trigger 30 energizes the shutter motor. When the trigger is released a device mounted on the shutter 40 ensures that the shutter stops with the film shielded by it. As shown depressing the trigger 30 raises the plate 60 to touch contact 62, the trigger being connected to the plate 60 through a linkage Fig. 2, which includes a spring 85 which positively urges the plate 60 into its raised and lowered positions. On releasing the trigger 30 the plate 60 will fall only if the sector 47 of the shutter 40 is located as in Fig 4. Otherwise tooth 66 will engage rim 46 and the switch will remain closed so permitting the shutter to rotate until the sector 47 arrives in the Fig. 4, position. The sector 47 is located wholly within the opaque sector 42 of the disc 40. Arm 70 pivoted on pin 71 and attached to tension spring 73 is used to absorb the momentum of the shutter 40. The shutter 40 rotates clockwise, as viewed in Fig.4. If the tooth 66 enters section 47 to the right of the arm 70 the shutter momentum is absorbed by the arm 70. If the tooth enters to the left then the momentum of the shutter 40 is sufficient for the tooth 66 to engage the bent end 48 of rim 46 and so lift up the plate 60 to close the switch. The shutter therefore completes a further revolution so that tooth 66 can re-enter the sector 47 to the right of the arm 70.
Patent GB-529970-A (GB)
Title: Improvements relating to power transmitting mechanisms
IPC: H02K7/10
Filed: 1939-06-14
Abstract: 529,970. Clutches; toothed gearing. ARCHDALE & CO., Ltd., J., and WILSON, G. R. June 14, 1939, No. 17369. [Classes 80 (i) and 80 (ii)] In a power transmission the driving shaft a has a quick thread e co-operating with a nut f having dogs h which selectively engage dogs i on the gears c according to the direction of rotation of the shaft a. The gears c are loose on the shaft a and drive wheels d. Shaft a is driven by a reversible electro-motor. Specification 12569/13, [Class 80 (ii)], is referred to.
Patent GB-852598-A (GB)
Title: Improvements in or relating to the production of semi-conducting layers from semi-conducting compounds
IPC: H01L21/203
Filed: 1958-05-30
Abstract: A layer of a semi-conducting compound composed of two elements, e.g. indium arsenide, is produced by directing separate vaporous streams of the elements on to a surface maintained at a temperature above the condensation temperature of the more volatile <PICT:0852598/III/1> element and below the condensation temperature of the compound and the less volatile element, the more volatile compound being in excess.  The surface may be maintained at a temperature of 200 DEG C. for the production of indium arsenide.  The jets may be of varying density in cross-section, decreasing in density from the centre towards the periphery, and may partially overlap (as shown), thus ensuring a desirable region in which the compound is obtained pure. This region may be cut out.  The resulting layer may be heated at a temperature just below the m.p. of the compound in the vapour of the more readily volatile element at a pressure less than the v.p. of the solid element and greater than the partial v.p. of the element over the compound.
Patent GB-858888-A (GB)
Title: Improvements in or relating to automatic frequency control systems
Inventor: FEWINGS DAVID JOHN
IPC: H03L7/107
Filed: 1959-05-21
Abstract: 858,888. Automatic phase control systems. MARCONI'S WIRELESS TELEGRAPH CO. Ltd. Oct. 29, 1959 [May 21, 1959], No. 17370/59. Class 40(5). A variable frequency oscillator 1 is frequency locked with one of a spectrum of equally spaced frequencies derived by a frequency dividing and harmonic generating circuit 3 from a crystal reference oscillator 2 by a phase detector 4 whose output through a reactance tube 5 controls the oscillator frequency, but the output is shortcircuited by a relay 12, closing contacts 12<SP>11</SP>, until a predetermined nearness to the required frequency exists. Thereupon the relay 12 is released by a decrease in output of phase detector 4 (normally through an amplifier 13 energizing the relay 12) to remove the short circuit and de-energize a relay 6 which, after a short delay due to shunt condenser 15, then releases to close contacts 6 and render effective a further shunt capacitor 9 with series damping resistance 10 in the A.F.C. control circuit, so that the frequency response and pull-in range of the latter is then reduced.
Patent GB-494600-A (GB)
Title: Improvements in and relating to roller squeezing machines
IPC: D06F45/28
Filed: 1937-06-23
Abstract: 494,600. Wringers. LITHGOW, J., and CROMPTON, H. June 23, 1937, No. 17420. [Class 138 (ii)] For protecting the hands of an operator feeding work to a wringer each roller 1 carries one or more endless belts 6 which pass over separated tension rollers 3 at the feeding side, the goods being fed into the converging space between the belts. The frame 5 carrying the upper tension rollers 3 is pivoted at 7 and is drawn by a spring 8 into yielding engagement with an adjustable stop 9. The belts may pass round the rollers as shown, in full lines or around back rollers, as shown, in broken lines.
Patent GB-130853-A (GB)
Title: Cloth Folding or Cuttling Apparatus.
Inventor: THORNBER JOHN
IPC: B65H45/101
Filed: 1918-10-25
Abstract: 130,853. Thornber, J., and Henshilwood, A. B. Oct. 25, 1918. Cuttling.-Relates to apparatus for folding cloth, in which the cloth received from other machines is folded in vehicles, and consists in the provision of means whereby the delivery may be made in various positions, under the control of the attendant. As shown, the cuttling-arms 12 are carried loose on a shaft 13 of a carriage running on rails 2 and driven by a hand-controlled belt on the pulley 9, which drives the pulley 5 through an endless rope 6 passing over a guide-pulley at the other end of the rails 2. The gears 10, 10<a> drive the shaft 4d of one pair of wheels 4b of the carriage. The shaft 13 carries the cloth roller 14 driven by a rope 15 as shown from a cloth delivery roller 16<a>. The arms 12 are oscillated through cranks 18 on a shaft driven by a belt 20a from the shaft 13. More than the two positions shown for the arms 12 may be provided. In a modification, the endless rope 6 is hand-driven by the attendant through a hand-lever, a geared quadrant, and gear-wheels, while the arms 12 are also oscillated by gearing from the shaft 13, driven from the main-shaft, acting through a telescopic shaft, by bevel gearing. In another modification, the travelling carriage is replaced by adjustable lever arms by throwing over which, through worm gearing, the position of the arms 12 may be changed.
Patent GB-1345269-A (GB)
Title: Acrylic urethane composition
IPC: C08G18/10
Filed: 1971-05-27
Abstract: 1345269 Acrylic urethane coatings LORD CORP 27 May 1971 [8 July 1970] 17459/71 Heading B2E [Also in Division C3] Solutions comprise a mixture of (A) a urethane prepolymer containing isocyanate groups and (B) a copolymer of an acrylic monomer and an adduct of an organic diisocyanate and a hydroxyalkyl acrylic monomer, the copolymer having the formula: wherein R is hydrogen or methyl, R 1  is a C 1-10  alkyl group, R 2  is hydrogen or methyl, R 3  is a C 2-4  alkylene chain, the total number of carbon atoms in R 2  plus R 3  being at least 3, R 4  is a divalent organic radical, X is 0.70 to 0.99, y is 0.01 to 0.30, and the relative proportions of A and B are 30 to 99% of A to 1 to 70% of B based on the combined weight of both. The urethane prepolymer is prepared in a conventional manner by reacting excess of a polyisocyanate with, for example, a poloyether or polyester polyol generally in the present of an inert solvent. The adduct used in the preparation of copolymer (B) may be prepared by reacting, for example, hydroxypropyl acrylate, hydroxybutyl acrylate, hydroxypropyl methacrylate, hydroxybutyl methacrylate and particularly hydroxyethyl methacrylate with a diisocyanate which is preferably 4,4'-methylene bis(cyclohexyl isocyanate). The adduct may then be reacted with a conventional acrylic monomer, preferably n-butyl acrylate, in the presence of a free radical polymerization catalyst and a solvent to prepare the copolymer (B). Prepolymer (A) and copolymer (B) are then simply mixed in solution. In use the polymers cross-link by reaction with moisture in the atmosphere or by reaction with added active hydrogen-containing material, e.g. a polyol or by heating or by various combinations of these. There is described the coating of wood, metal, plasticised polyvinyl chloride and styrene-butadiene rubber sheets, e.g. by spraying.
Patent GB-970821-A (GB)
Title: Variable oscillator system
IPC: F16H37/12
Filed: 1962-05-07
Abstract: 970,821. Utilizing inertia to obtain movements. N. L. DEAN. May 7, 1962 [March 13, 1962], No. 17539/62. Heading F2X. A slide 22 is reciprocated with harmonic motion by the rotation of an arm 28 carrying a weight 34 mounted on the slide 22, and a cam 40 is adapted to engage an equilibrium point 38 on the arm 28 to restore the centre of the harmonic motion to its former position if the centre becomes displaced. A segmental cam element 56 constitutes an amplitude control device. A shaft 64, driven by a motor 62, carries bevel gears 70, 92, 72 which transmit drives to cam 40, arm 28 and cam element 56, respectively, the bevel gear 92 being slidably mounted by means of splines 90 on the shaft 64. In a modification, the arm 28 and weight 34 are replaced by eccentric mass elements 110 mounted on shafts 108 carried by a transverse member 104 and driven in opposite directions.
Patent GB-1510286-A (GB)
Title: Planing tool
IPC: B27G17/02
Filed: 1976-04-29
Abstract: 1510286 Planing tools A ANDERSSON 29 April 1976 [30 April 1975] 17540/76 Heading B4B An elongate hand planing tool comprises two parts 1, 2 releasably connected together in a transverse plane defined by a respective plate 4, 5 on each part, the plane being inclined to the longitudinal direction of the tool, and a cutting blade 6 clamped between the two plates by means of a releasable locking device 7, 10. As shown the two parts are hinged together and the blade is located on the plate 5 by means of pins 5a. The parts of the tool are clamped together by means of a lever 10 having a key-hole shaped opening (11) Fig. 4 (not shown) for co-operation with a grooved pin 7 screwed into the plate 4. In a modification, the pin 7 may be omitted and the lever co-operate with grooves formed in both pins 5a, Fig. 6 (not shown).
Patent GB-1151747-A (GB)
Title: Mail Sorting Code Printer
Inventor: SHERLOCK BRIAN LEONARD
IPC: B07C3/18
Filed: 1967-04-17
Abstract: 1,151,747. Selective printing. TELEPHONE & ELECTRICAL INDUSTRIES PTY. Ltd. 17 April, 1967, No. 17556/67. Heading B6F. Type on the end of sliding rods: printing marks in selected positions.-A printer transferring luminescent material, e.g. on a tape 8, on to postal letters 1 comprises a number of sliding punches 21 which are heated continuously and which transfer the heat to the tape at the moment of impact. Letter-feeding and guiding arrangements.- Letter 1 to be printed with code marks from the tape are first fed to a flap 2 where the letter is viewed and which is energized by a rotary solenoid 23 so that the letter drops down to a second viewing position 4. A further rotary solenoid 20 trips the letter from a belt 5 upon which it rests into a printing position adjacent a platen 27 and the tape 8 of luminescent material. After printing, the letter is released from the printing position by a withdrawing sliding movement of a flap 23 attached to a rack 24 which is moved by a toothed sector 25. The letter is removed sideways by an endless band 45. Printing unit.-The punches 21 arranged in staggered formation, Fig. 7, are spring actuated to impress the tape 8 against the letter and are selectively released by electromagnets 22, which withdraw their armatures 37 from stops 36 on rods 40. Rubber buffers 39 are placed between the rods 40 and the punches 21. Adjustment of impression.-The springs 38 may be individually accurately and delicately adjusted. Restoration of punches.-The punches are restored by mechanical or pneumatic means. Platen construction and movement.-The platen 27 is urged into contact with the reverse side of the letter by a rotary solenoid having a quadrant 29 moving a rack 30. Heating punches.-An electrical unit (32, Fig. 6) heats and forces warm air into a box 33, Fig. 7, through which the punches move. A labyrinth seal 34 allows air to escape slowly. Tape feeding mechanism.-The luminescent tape 8 is fed from a supply reel 7, Fig. 1, across the printing position, where it is guided by rollers 10, 11, and then to a driving roll or capstan 13 and thence to a take-up reel 14. Both the reels 7 and 14 are driven continuously by a motor 16 and reduction gearing 17 but an intermittent motion of the tape is introduced by the capstan 13 and a spring-loaded pressure roller 18 which jerks the tape so that it remains stationary during printing. The tape has a band of electrically conducting material at the end, so a pair of contacts are bridged to give an alarm.
Patent GB-1173375-A (GB)
Title: Raschel warp knitting machine having a fall plate
IPC: D04B23/22
Filed: 1967-04-17
Abstract: 1,173,375. Knitting-machines. TAKEDA KIKAI SEISAKUSHO K.K. 17 April, 1967 [7 Oct., 1966], No. 17592/67. Heading D1C. A Raschel machine comprises two yarn guide hangers rockable about independent axes, the front hanger carrying a fall plate 58. The arrangement permits the front pattern yarn guides e.g. 62 to be swung to the front in advance of the rear ground yarn guides, and along a path b which allows those yarns 71 which are to be influenced by the fall plate to be laid lower down the needle. Pattern yarn guides may also be mounted on the rear hanger.
Patent GB-1062841-A (GB)
Title: Improvements in and relating to circuits for developing electrical signals having a predetermined magnitude
IPC: G05F3/04
Filed: 1964-04-29
Abstract: 1,062,841. Transformer circuits; voltage dividers. CONSOLIDATED ELECTRODYNAMICS CORPORATION. April 29, 1964 [May 23, 1963], No. 17669/64. Heading H3U. [Also in Division H2] A circuit for producing a signal having a predetermined magnitude relative to an input signal comprises two transformers across whose secondary windings in series the desired signal is produced, one primary winding receiving the input signal and the other primary being supplied by a " control signal " which is obtained from the first transformer (e.g. by a tertiary winding) but is smaller than the input signal. The second transformer thus steps up the control signal and adds it to the input signal so that the input/output ratio can be set accurately by adjusting the turns ratio of the second transformer. This adjustment is facilitated by threading the windings through toroidal cores. For greater precision, a second control signal can be fed from the second to a third transformer whose secondary is in series with the other two. A plurality of output voltages of different magnitudes can be obtained by providing a corresponding number of secondary windings on the transformers. These can be used as sources of independent reference voltages or can be applied to a selector switch to give an output variable in steps. The arrangement can be used as a stable source of reference voltages for comparison with an unknown voltage in a difference amplifier (Fig. 2, not shown). If the unknown voltage is D.C. an intermittently operating switch is included in the primary circuit of the first transformer (Fig. 3, not shown).
Patent GB-714890-A (GB)
Title: Improvements in or relating to tools for inserting and extracting bushes and the like
Inventor: DENNIS DENIS BENJAMIN
IPC: B25B27/06
Filed: 1952-07-14
Abstract: 714,890. Removing and inserting bushes. BRITISH TRANSPORT COMMISSION. March 25, 1953 [July 14, 1952], No. 17762/52. Class 61 A 'tool for inserting and removing bushes such as those connecting the links of an escalator step chain comprises a stem 24 adapted to pass through the bush 28 and carrying a bush engaging abutment nut 26, and an annular abutment member 19 movable along the stem towards the nut 26 by hydraulic means. As shown a cylinder 10 connected to a liquid supply has an end wall 13. provided with a screw threaded hole to receive the screwed end 25 of the stem 24, and two arcuate slots 15 to receive the two longitudinally extending legs 18 of a piston 16. The annular abutment member 19 is bolted to the legs 18. In operation a dummy bush 30 is fitted on the stem 24 which is then passed through the bush 28 and screwed into the end wall of the cylinder thus bringing the member 19 into engagement with the chain side plate 29. The piston 16 on being moved to the left causes the bush 28 to be pushed from the chain through the abutment member 19. The stroke of the tool is equal to the length of the bush 28 'the maximum spacing between the abutments 19 and 26 being twice the length of the bush. In a modification the stem is permanently secured to the end wall of the cylinder. In another modification the legs 18 of the piston are replaced by rods or pillars which pass through holes in the end wall of the cylinder.
Patent GB-869846-A (GB)
Title: Fibrous cellulosic sheet and filter and process therefor
IPC: A24D3/02
Filed: 1959-05-25
Abstract: 869,846. Paper-filters. OLIN MATHIESON CHEMICAL CORPORATION. May 25, 1959 [June 3, 1958], No. 17766/59. Class 96. [Also in Group VI]  An elongated strip of fibrous material is corrugated longitudinally (Fig. 4) to form ridges with projecting fibres resulting largely from discontinuous tearing, the corrugating rollers being dimensioned not to produce sharp cuts, the ridges then being compressed so that the corrugations overlap (Fig. 5). The strip may then be formed into cigarette filters by gathering in a forming cone and encircling with wrapping paper the edges of which are joined by pasting. The filter rod so formed is cut into lengths. The paper used may contain a melamine-formaldehyde or urea-formaldehyde resin to increase its wet strength. Specification 795.534 is referred to.
Patent GB-406182-A (GB)
Title: Connection and supporting device for electric lamps provided with a screw cap
IPC: F21V19/00
Filed: 1933-06-23
Abstract: 406,182. Electric - lamp holders. ESQUIROL, P., 23, Cours de la RÚpublique, Castelnaudary, Aude, France. June 23, 1933, No. 17953. Convention date, July 13, 1932. [Class 39 (ii).] A connecting and supporting device for a series of lamps of the screw-cap type comprises a wire coiled to form a helical socket 1 to receive the lamp cap 7, one end 2 of the wire forming a feeder connection which may take the form of a socket 4 attached to or formed from the wire, and the other end of the wire forming a resilient arm 3 that carries a plate 5 and abuts upon the centre contact 6 of an adjacent lamp. Lamps inserted through plain holes 11 in a panel 12 are secured in the panel by the helix 1. At one end of a series of lamps where a feeder is to be connected to the centre contact, an elongated helix 8 is employed to receive an insulating block 9 with an axial socket 10 that abuts resiliently against the contact 6. If the lamps are to be connected in parallel the sockets 4 are connected alternately to opposite poles of the supply.
Patent GB-406183-A (GB)
Title: Improvements in or relating to fastening devices
IPC: A44C11/02
Filed: 1933-06-24
Abstract: 406,183. Sleevelinks. VIDAL, A. J., 7, Rue d'Argout, Paris. June 24, 1933, No. 18083. [Class 43.] A cuff-link consists of a cross-piece 7 having two eyelets 1 to receive pins 4 which can be inserted from either side and with either end foremost and are retained by spring-pressed bolts 2 engaging with notches 5; one pin may be permanently fixed to the cross-piece. The pin, which may be of circular cross-section to cooperate with a circular or square eyelet or of square cross-section to co-operate with a circular eyelet, is released by partial rotation.
Patent GB-722145-A (GB)
Title: Improvements relating to nickel-chromium alloys for electrical resistances
Inventor: BETTERIDGE WALTER
IPC: H01B1/02
Filed: 1952-07-17
Abstract: A nickel-chromium alloy for electrical resistance wires has the following composition Cr 10-25 per cent, Ca 0.005-0.05 per cent, Ce 0.025-0.06 per cent, Si 1.15-2.0 per cent and the balance (except for impurities) Ni.  The alloy may contain one or more of the following elements Fe up to 2 per cent, Al up to 1 per cent, C up to 0.3 per cent, Cu up to 0.16 per cent, Mn up to 3.0 per cent and Co up to 15 per cent.  The Provisional Specification refers to alloys containing 0.01-0.1 per cent Ce, but otherwise of the above composition.