baber/WOPTO huggingface dataset:
Patent GB-904213-A (GB)
Title: Improvements relating to aircraft bomb bay constructions
Inventor: PUTTICK ARTHUR ALFRED
IPC: B64D1/04
Filed: 1958-02-05
Abstract: 904,213. Bomb doors on aircraft. FAIREY CO. Ltd. Feb. 4, 1959 [Feb. 5, 1958], No. 3803/58. Class 4. A bomb bay 11 in an aircraft fuselage 10 is closed by two adjacent doors 16, 18 which are operatively connected to move from positions in which they complete the fuselage contour, through the mid-positions shown in the Figure and back to their adjacent positions, door 16 completing a rotation of 180 degrees. Bombs 12, 13 are mounted on the normally upper surface of door 16 for enclosure within the bomb-bay and when the full door-movement has been completed, with a rotation of door 16 through 180 degrees, the bombs lie outside the fuselage for dropping from bomb slips which are housed within the depth of the door 16. The doors are operated by a jack 40 having a piston rod connected to the common pivot of two rods 41, 42 respectively pivoted at 44 to the fuselage and at 32 to a lever 33 fasf with door 16 for rotation about axis 17, and to a rod 31. The other end of rod 31 is pivoted at 30 to one arm of a bell-crank 25 pivoted at 28 to the fuselage, the other arm of the bell-crank having a connection 35 with an arm 37 fast with door 18 for rotation about a pivot 19. Partial contraction of the jack swings the doors to the positions shown and full contraction rotates door 16 to its inverted position, with the bombs exposed, and door 18 back to its original position. A linkage as shown is provided at each end of the bomb-bay and there may be a jack at one or both ends. A further door 14 is provided to provide access to the bomb bay when the doors 16, 18 are in their normal closing positions.
Patent GB-1395276-A (GB)
Title: Internal combustion engines
IPC: F01N3/00
Filed: 1973-01-26
Abstract: 1395276 Automatic control of exhaust gases ROBERT BOSCH GmbH 26 Jan 1973 [10 Feb 1972] 4061/73 Heading G3R [Also in Division F1] The fuel/air ratio supplied to an internal combustion engine is regulated by the output of an integrating servo amplifier 10 whose direction of integration is changed by a threshold switch 11 in response to a signal from an exhaust gas measuring device 13. (12 is a pre-amplifier), and if no change is signalled for a time related to engine speed the time constant of the integrator is shortened. The operation is shown in Fig: 1, in which the upper line represents the measured variations in exhaust gas composition and hence fuel/air ratio about the desired value represented by the horizontal line and corresponding to the stoichiometric ratio. The resulting output of the integrating amplifier is shown as the lower line, the inclination of which changes at each crossing of the desired value. During a period such as a, a' e.g. during acceleration, no correction would be made, but the time constant is changed at b thereby producing the result shown dotted at c in a shorter time. The time constant is changed by a second threshold switch 16 triggered by the voltage on a capacitor 15 which is charged during the space between constant width pulses whose frequency corresponds to speed, from speed detector 17. Alternatively the pulses may be counted and the time constant changed after a predetermined count. Details of the circuits shown in Fig. 2 are given, Fig. 4 (not shown). They employ operational amplifiers and switching transistors. The servo-amplifier may adjust the air nozzle of a carburetter or the fuel injected in a fuel injection system.
Patent GB-1090105-A (GB)
Title: Improvements in or relating to a.c. current calibrating apparatus
IPC: G05F1/14
Filed: 1965-01-29
Abstract: 1,090,105. Automatic current control. SANGAMO WESTON Ltd. Jan. 29, 1965 [Feb. 17, 1964], No.4091/65. Heading G3R. Apparatus providing a range of stabilized alternating currents, e.g. for calibrating purposes, comprises an oscillator 12 supplying output terminals 30, 32 by way of a transformer 20 and a current divider network 34 constituted by a transformer 80 and magnetic cores 40, 42 on which are wound tapped windings associated with switches the setting of which determines the output current Io applied to a device 86. The output current is sensed by a network 90 which includes a current matching network 94, a reference source 100 and a bridge circuit 102 and which produces an error signal when the output current differs from the desired value. The error signal is applied by way of a null detector amplifier 104 and a filter circuit 106 to control the output of the oscillator 12 in a corrective manner. The bridge circuit may include indirectly heated thermo-junctions Fig. 2 (not shown) and the reference source 100 may include a Zener diode. The output of the current matching network 94 is arranged to be substantially constant at about 10 milliamps regardless of the output current Io which may range from 10 milliamps to 100 amps.
Patent GB-1124330-A (GB)
Title: Improvements in or relating to the epitaxial deposition of crystalline layers
IPC: C30B25/14
Filed: 1966-01-31
Abstract: <PICT:1124330/C6-C7/1> In a process of epitaxial deposition of a material such as a semi-conductor on at least one heated carrier e.g. a semi-conductor, from a reaction gas such as a halide, the gas is supplied from a movable inlet 9 which is moved relative to the carrier 5 in such away that the entry point of the gas follows a continuous path about the centre of the deposition surface such that during a predetermined time the gas entry point passes the same number of times through all points on the path equidistant from the said centre and the velocity of the entry point varies immensely with its distance from the said centre.  The path of the gas entry point may be a circle, an ellipse, an epicyclic or epicycloidal path and is produced by means outside the reaction chamber 1 attached to the pipe 9 which is mounted in an elastic ring seal in the cover 4.  Instead of a single pipe 9 the pipe may divide into several parallel pipes within the chamber 1.  A shield 13 protects cover 4 against excessive radiation and the carriers 5 are heated by heater 6.  The distance between the gas entry point and the plane of the carriers 5 is less than 1.5 times the diameter of the chamber 1 and the reaction gas flow should not exceed a Reynolds number of 50.
Patent GB-140176-A (GB)
Title: Improvements in or connected with safety valves
IPC: F22B37/44
Filed: 1919-02-20
Abstract: 140,176. Ross & Co., R. L., and Hargreaves, W. Feb. 20, 1919. Safety-valves.-A safety-valve, of the kind provided with a liftable secondary area in which holes are drilled and over which a corresponding plate is adjustably mounted, has the valve casing secured to an externally flanged base-ring internally flanged at the bottom to receive the valve set and so reduce the over-all height of the valve. In the form shown, the casing c has a flange c<2> secured to a flange a<2> on the base-ring a. by bolts d, as described in Specification 140,205. The basering has a flange a<1> by which it is secured in position, and is formed or fitted with a ring a<6> adapted to protect the valve seat during transit, and also to take into the aperture in the boiler. The valve seat is formed with an external rib mid-way along its length adapted to be held against a seat a<5> by a separate fitting or by a cylindrical extension c<1> on the casing. In a modification, the base-ring is provided with a cylindrical extension extending into the steam space; and, in a further modification, the lower flange on the base-ring is dispensed with and the upper flange bolted directly to the boiler.
Patent GB-1049211-A (GB)
Title: Process for the production of polymeric boron-nitrogen compounds
IPC: C08G77/398
Filed: 1965-02-01
Abstract: Polymers containing boron and nitrogen and optionally containing silicon, are obtained by reacting a nitrile of formula R1(CN)z where R1 is a hydrocarbon radical which may be substituted and may contain one or more silicon atoms, and z is an integer of at least 2, with a mixture of a borohydride and a boron halide or boron halide addition product at a temperature above 0 DEG  C., e.g. 40 DEG  to 100 DEG  C. Inert fillers may be present in the reaction mixture. In examples polymers are obtained by reacting sodium borohydride and boron trifluoride tetrahydrofuran addition product with a ,o -bis-(g -cyanopropyl) -polymethyl polysiloxanes, with a polymethyl polysiloxane having b -cyanoethyl groups, with adipic acid dinitrile, with 3,4-dicyano-diphenyl, with succinic acid dinitrile, with phthalo-dinitrile and with 1,4-dicyanobutene-(2); in some instances quartz sand and ferric oxide are present.  Other starting materials are listed.
Patent GB-419356-A (GB)
Title: Improvements in and relating to display devices
IPC: G09F7/14
Filed: 1933-02-11
Abstract: 419,356. Signs. GEE, A. K., Benartie, Nunthorpe, Yorkshire. Feb. 11, 1933, No. 4281. [Class 3 (ii).] Sign characters are provided with faced smooth contacting surfaces which are moistened and pressed against a background to secure the characters thereon. The characters are preferably of coloured translucent glass and the colouration of individual characters may be varied by varying the thickness of the character. In the case of large characters, securing feet 5, Fig. 5, are provided. Alternatively, the portions 7, Fig. 8, of the character may be recessed and the edges 8 extended to form a contacting surface.
Patent GB-519616-A (GB)
Title: Improvements in or relating to the concentration of aqueous alkali metal hydroxides
IPC: C01D1/42
Filed: 1938-06-17
Abstract: 519,616. Concentrating alkali metal hydroxides. STEVENS, A. H. (Pittsburgh Plate Glass Co.). June 17, 1938, No. 4335/40. Divided out of 519,416. [Class 1 (ii)] 'Caustic alkalis are concentrated by treatment with a liquid water-solable amine, e.g., ammonia under such conditions of temperature and concentration that three phases are produced, namely a precipitate of solid hydroxide, a concentrated liquid hydroxide layer, and a diluted amine layer. The treatment is preferably effected in counter-current. In the illustrated apparatus the ammonia enters at 52 and leaves at 44. Caustic soda solution is admitted at 46 and flows downwards to form a concentrated layer in the lower part of the apparatus. Solid hydroxide is formed in the upper part of the inclined cylinder 43 and is carried by the scoops 51 into the vertical chamber 54, where it is melted by means of the heating jacket 56 and withdrawn as a liquid. Specification 519,416 is referred to.
Patent GB-526027-A (GB)
Title: Improvements in or relating to spring rollers for use with chair seats
IPC: A47C4/30
Filed: 1939-02-09
Abstract: 526,027. Chair seats. EXPRESS MOTOR & BODY WORKS, Ltd., and CLARK, F. C. Feb. 9, 1939, No. 4340. [Class 52 (ii)] The seat portion of an X-frame chair is formed by a sheet of flexible material attached at one end to a spring roller the end portion of the sheet having a hem or pocket into which the winding member of the roller is inserted and to which it is secured by a strip of rigid material overlying the sheet. In the form shown the upper end of the frame 12, Fig. 1, is provided with a slotted housing or cover 24 for the reception of the a spring roller 28, Fig. 4, comprising a spindle 30, a tubular rotary winding member 32, a bearing member 36, and a coil spring 40. The flexible material 54 is formed with a hem or pocket 52 into which the winding member 32 is inserted and to which it is secured by an outer rigid strip 56 and screws 58. The free end of the flexible material has a metal hook 60 for detachably connecting it to the front rail member 62. In a modified form, as shown in Fig. 7, the winding member is formed as a slotted metal tube 80 with inner and outer bridge pieces 84, 86 connected by screws 88 which secure the hem of the flexible material to the winding member.
Patent GB-1443042-A (GB)
Title: Safety locking mechanisms
IPC: B60N2/235
Filed: 1973-08-07
Abstract: 1443042 Safety locking mechanisms BROSEVERWALTUNGS GmbH 7 Aug 1973 [7 Aug 1972] 04415/76 Divided out of 1443041 Heading A4J [Also in Division E2] The subject matter of this Specification is identical with that described with reference to Figs. 1 to 5 of the parent Specification, 1443041 but the claims relate to the two armed locking latch.
Patent GB-567678-A (GB)
Title: An improved jolting table for use in casting concrete products
IPC: B28B1/087
Filed: 1943-03-20
Abstract: 567,678. Shaking-machines for moulding concrete. DAVIS & SOPER, Ltd. (Salisbury, City Council of). March 20, 1943, No. 4572. [Class 87 (ii)] The shaking table 1 is supported on the outer ends of horizontal levers 5, 8 fulcrumed on rollers 10, 16 mounted in carriages 11, 17. A cam 20 driven by a variablespeed electric motor 25 periodically depresses the inner ends of the levers and so raises the table. When the table descends, the (upward) impact of the levers is taken by adjustable stops 35, 38. The fulcra 10, 16 may be moved, to vary the table lift, by turning a hand wheel 34 secured to a shaft 29 having right- and left-hand screwthreads co-operating with the carriages 10, 16.
Patent GB-963649-A (GB)
Title: Extensible watch strap or bracelet
IPC: A44C5/08
Filed: 1962-02-06
Abstract: 963,649. Expanding bracelets. A. HEINZ. Feb. 6, 1962 [Feb. 15, 1961], No. 4578/62. Heading A3H. An extensible watch strap or bracelet consists of a plurality of flexibly connected links, each link being adapted to be expanded against spring means and consisting of three members telescoped over or into one another, two constituting draw members connected by the member which is inserted between them and is at least partly covered by them. The two draw members are connected by at least one spring. In one form, the first draw member 1 consists of a web with side walls 4 having projecting tabs 5 and inturned tabs 6. The second draw member 3 is U-shaped having an upper web 10 with a projecting tongue 16 and a lower web 11 with bent up side tabs 15. The connector 2 is also U-shaped and has a cut out portion 18 in the top web 7 and back wall 13. and a turned-up edge 17 to the lower web 12. The parts are assembled by passing the upper web 7 of the connector 2 between the tabs 6, sliding the member 3 over the connector 2 and bending the tabs 15 over its edges and the tab 16 into the cutout 18. gearing from a power-driven shaft 18, attached to a tractor, and drives the fan and auger through a sprocket-chain 19. The machine is drawn offset from the tractor (Fig. I, not shown). A leaf spring, a wire spring with a loop, or a pair of leaf springs joined at the centre by a connecting strip is inserted between the tabs 6 and either the end of the tab 16 or the tabs 15 to draw the parts together. In a modification, the lower web of the connector 2 lies below the lower web of the draw member 3, the turned up edge of the lower web of the connector being replaced by side tabs bent inwards over the draw member. The links are united by means of the tabs 5 engaging behind the webs 14 of adjacent links.
Patent GB-707020-A (GB)
Title: Watch strap of leather or other strap material
IPC: A44C5/16
Filed: 1952-02-21
Abstract: 707,020. Attaching watches to wrist LEWA GES. Feb. 21, 1952 [Aug. 18, 1951], No. 4582/52. Class 43 In a watch strap of the type comprising upper and lower strap elements b, a in which one end of the strap'passes round a bar e on the watch and contains a metal fitting or link g consisting of a thin metal sheet one end of which is formed into a hook h and engaged in a slit f in the lower element a and of which the other end o is looped over the bar e and pressed on to the hook e and h so as to form a closed link enclosing the end portion of the lower strap element and the bar, the hook end h is provided with flanges i bent out therefrom which are adapted, when the other end portion o is looped over, to be directed by tongues p through slits q formed in the portion o by the bending outwards of the tongues and to this end the flanges i are curved outwardly at their free ends k and thus after bending close over the strips r resulting from the formation of the tongues p. To render the strip p more flexible at the bending portion, a portion m of the stip is cut away, leaving the two narrow side strips n. The looped over end portion d is glued to the lower surface of the lower element a. Alternatively a tag may be provided on the upper end edge of the part o of the strip g to engage with a slit in the strap portion d laid thereover, which slit may be inclined inwardly to form a pocket.
Patent GB-382833-A (GB)
Title: Improvements in or connected with couplings for railway trucks and the like
IPC: B61G1/36
Filed: 1932-02-16
Abstract: 382,833. Non-automatic couplings for railway vehicles. JORDAN, S. T., 206, Butts Road, Sholing, Southampton. Feb. 16, 1932, No. 4610. [Class 103 (v).] In a non-automatic link-and-hook coupling for railway vehicles of the kind which is operated from the side of the vehicle by means of a transverse rotary shaft, a cradle 4 adapted to engage and support the end link of the chain 3 is pivoted at 6 to a carrier 7 which in turn is pivoted at 8 to levers 9 keyed to the rotary shaft 10, suitable guiding means being provided for causing the cradle to tilt relatively to the carrier as the latter is moved. As shown, the guiding means comprise on the cradle an arm 13 fitted with a roller 14, and on the vehicle cooperating fitted guides 16, 15, 17 and a movable guide or stop 18 that can turn freely in one direction so as to offer no resistance to the return movement of the mechanism. Additional support is given to the carrier by means of pivoted stays 19 or chains or like flexible connections, which are adjustable in length so that the device may be accurately set for effecting the coupling and uncoupling operations. The shaft 10 is rotated by handles 12 fitted at each side of the vehicle.
Patent GB-879928-A (GB)
Title: Improvements in and relating to the speed control of electric motors
Inventor: BABAD LEON
IPC: H02P7/26
Filed: 1957-02-11
Abstract: 879,928. Automatic speed control systems. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 10, 1958 [Feb. 11, 1957], No. 4629/57. Class 38 (4). [Also in Group XXXVII] In a speed control system for a direct-current motor, an armature 1 is supplied from a thyratron control unit EMT in which the grid excitation of the thyratrons is determined by the difference between a voltage representing a speed setting derived from a potentiometer d, e and the output voltage of a tachogenerator TG. A field winding 2 is fed from an alternating-current supply 7 through a half-wave gridcontrolled rectifier 4 having a grid 4a controlled by a phase-shifting unit 5 responsive to the difference between a direct reference voltage 5a and a signal voltage derived from a tapping 8 on a potentiometer 6 connected across the armature. The reference and signal voltages are chosen so that the field excitation is a maximum up to a speed determined by the full load rating of the motor, and at higher speeds, the field excitation is gradually reduced to a minimum value determined by the maximum speed. A diode 3 is connected across the field winding 2 to reduce inductive effects.
Patent GB-720745-A (GB)
Title: Supporting and mounting bearings
Inventor: MORGAN MYLES
IPC: B21B31/07
Filed: 1953-02-20
Abstract: 720,745. Locking nuts. MORGAN CONSTRUCTION CO. Feb. 20, 1953, No. 4770/53. Class 89 (1). [Also in Group XXXIV] A ring 23 is held against a shoulder 22 of a journal 11 by a nut 25 seated on a threaded ring 26, which is divided into two parts and is retained in a groove 27 in the journal by a garter spring 29. The nut 25 is locked by a key 30 engaged in one of a series of notches 33 in the nut, and is held in the notch by a circlip 31. To facilitate its removal the key 30 is provided with a tapped hole into which a tool may be screwed.
Patent GB-601585-A (GB)
Title: Improvements in or relating to methods of making hollow poppet valves, and the improved valves resulting therefrom
IPC: B23P13/00
Filed: 1943-03-24
Abstract: Hollow poppet valves of austenitic alloy steel are made by heating a hollow valve having thicker walls than desired in the finished product, continuing the heating at temperatures in excess of 2,050 degrees F., but below the melting point of the steel until the carbides are dissolved, quenching to retain the carbides in solution, inserting a mandrel in the blank, working the blank round a mandrel to thin down the stem walls and then ageing the worked blank at 1,000-1,600 degrees F., e.g. for twelve hours, to precipitate the carbides along the slip planes of the worked grains in the metal. The first heating may be carried out in a molten salt bath such as barium chloride or borax for ten minutes and the quenching in water, oil or brine solution.  Instead of working the blank between the quenching and ageing, the blank may be cold worked to flatten the head of the valve.  The treatment of a valve made of an alloy steel containing 14 per cent of nickel, 14 of chromium, 2.5 of tungsten, 0.35 of carbon and the remainder iron is referred to.  U.S.A. Specification 1,984,751 is referred to.
Patent GB-641296-A (GB)
Title: Improvements relating to electric switches
IPC: H01H23/16
Filed: 1948-02-19
Abstract: 641,296. Tumbler switches. PARSONS, Ltd., C. H., and HANDLEY, G. B. Feb. 19, 1948, No. 4877. [Class 38(v)] In a tumbel switch for heavy currents, the contact-assemblies are separated from the terminals 18 by two insulating barriers 19 having slots 20, 21 to allow the passage therethrough of laterally-extending parts 15, 17 of the terminals. The dolly 11 is pivoted by trunnions 23 in recesses 23a in the barriers and has two projections 27, one on each side, which engage beneath contact blades 10, which are fixed to the parts 15 and have contacts 13 normally engaging fixed contacts 28 on the parts 17. Movement of the dolly from the Fig. 4 position causes the projections to separate the contacts. The switch may be arranged to close one set of contacts and open the other, simultaneously, by adjustment of projections 27, which may be extended to control any number of contacts. The contact springs 10, which are preferably composed of copper backed by phosphor-bronze strips, may be forked at the contact end, and the contacts 13, 28 may be of silver. The dolly is resiliently retained in its limit positions by a looped wire spring 25 and its movement cushioned by rubber pads 26.
Patent GB-310123-A (GB)
Title: Hose for conveying fluids or fluid pressure
IPC: B29D23/00
Filed: 1928-02-17
Abstract: 310,123. Reddaway & Co., Ltd., F., and Gardiner, W. C. Feb. 17, 1928. Hose pipes.-A hose for conveying fluids or fluid pressure consists of an inner tube a of tough rubber, a braided or open textile reinforcement b, a tube c of soft or adhering rubber, and an external textile wrapping d, the soft rubber c serving to key through the layer b on to the touch rubber a, and to adhere to the outer wrappings. Wire armour e, or an external woven or plaited jacket, or both, may be added. The wrapping d consists of windings of rubbered fabric or material cut on the bias, and the completed hose is vulcanized. Additional layers of soft rubber and textile wrapping may be provided.