baber/WOPTO huggingface dataset:
Patent GB-679130-A (GB)
Title: Improvements in or relating to frequency stabilizing systems
IPC: H05B6/04
Filed: 1949-10-28
Abstract: 679,130. Frequency measuring. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. Oct. 28, 1949 [Nov. 2, 1948], No. 27695/49. Class 37. [Also in Group XXXV] The frequency of an R.F. oscillator is measured by combining the outputs of a broadband discriminator and a sharp discriminator, both having the same cross-over frequency. The output of the oscillator 30 (supplying a heating load 32), is applied, via coupling coil 36, to a pair of mixer circuits 15, 18, supplying the broad-band discriminator, and to a pair of mixer circuits 113, 114, supplying the sharp discriminator. Mixer 15 comprises a crystal oscillator having a frequency 2 mc/s. below that of the oscillator 30, and an output circuit 52, 53, tuned slightly above the difference frequency. Mixer 18 is similar but its oscillator operates 2 mc/s. above oscillator 30, hence a change, e.g. an increase, in the frequency of oscillator 30 increases the output frequency of mixer 15 and decreases that of mixer 18. The outputs of the mixers 15, 18 are applied via band-pass amplifiers 16, 19, to the broad-band discriminator 20, the output of which is connected to the output of the sharp discriminator 145. The output of a crystal oscillator 12 (operating at the frequency of oscillator 30) appears across a resistor 109 and is applied to mixer 113 by a capacitor 119 and grid resistor 108 so that the input voltage leads the voltage across resistor 109 by 45 degrees. The voltage across resistor 109 is also applied to mixer 114 by a resistor 121, which together with the input capacity of the valve cause the input voltage to lag that across resistor 109 by 45 degrees. The output of mixer 113 passes via an amplifier 131 to a cathode follower phase splitter 137, the anode and cathode output of which are applied to the anodes of the discriminator 145 by coupling circuits 150, 143, 141, 142. The output of mixer 114 passes via an amplifier 153 to the mid-point of resistors 142, 143, so that it is 90 degrees out-of-phase with both of the other input voltages. Due to the coupling circuits 150, 143; 141, 142, the voltages from the phase splitter change in phase relative to the voltage from mixer 114 upon frequency deviation. Hence a resultant voltage appears across resistors 147, 148; which is added to the output of the discriminator 20 and is used to control the tuning of the oscillator 30.
Patent GB-434855-A (GB)
Title: Improvements in and relating to electric telephone cables for four-wire circuit operation
IPC: H01B11/20
Filed: 1934-09-27
Abstract: 434,855. Cables. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. Sept. 27, 1934, No. 27763. Convention date, Oct. 2, 1933. [Class 36] To reduce crosstalk between conductors of the same group in a telephone cable for four-wire circuit operation of the kind in which the conductors of the two directions of transmission are arranged in separate groups, some or all of the conductors of each group are electrostatically or electromagnetically screened from one another, the arrangement of the screens being the same in both groups. The screens, which may consist of conductive or semiconductive tape wound in open helices around the conductors to be screened, may be applied only to those conductors which have electrical constants different from those of the remainder of the group. Fig. 1 shows a cable having a core 10 of conductors for two-wire working which is surrounded by arcuate groups 13, 14 of conductors arranged for four-wire operation. The groups 13, 14 are separated by conducting screens 15, 16 and the layers of conductors in the group 13 are separated from one another by screens 17, 18. Screens 19, 20 are also provided in the group 14. In a similar construction the arcuate screens 17-20 are replaced by radial screens and the screens 15, 16 are both conducting and magnetic. In another construction the groups 13, 14 each consist of six circular conductor groups which are laid around the core 10, each circular conductor group comprising a central screened pair for long distance traffic, and an outer layer of six ordinary quads. Fig. 3 shows screened pairs 43, 44 constructed for fourwire carrier frequency operation which are disposed respectively in screened core groups 40, 41. The groups 40, 41 may contain additional screens 47, 48.
Patent GB-1429602-A (GB)
Title: Connection network for an automatic electronic time switching pcm exchange
IPC: H04Q11/04
Filed: 1974-06-21
Abstract: 1429602 Automatic exchange systems JEUMONT-SCHNEIDER 21 June 1974 [6 July 1973] 27765/74 Heading H4K  In a connection network for a PCM exchange and which controls switching between incoming highways E1-E3 and outgoing highways S1-S3 each incoming highway is provided with a set A1 of series shift registers R1-R32 in which each code of a time slot is routed to one of the registers under control of a time base circuit B, subsequent routing of the content of a register to the required outgoing highway via one of the multiplexers M11, M21, M31 being controlled by further register sets C1-C3 which store in circulating shift registers N1-N5 address codes supplies by control logic L. The number of registers R is equal to the number of time slots per frame and the circulating time of each reaister is equal to the time slot length. Each register N1-N5 of a register set C1-C3 has as many positions as there are time slots in a frame, and is driven by the time base B such that all its positions are shifted in a time equal to one frame length. Hence each register set, e.g. C2 outputs during each time slot a five-bit address code to its corresponding set, e.g. M21, M22, M23, of multiplexers. The particular multiplexer to be used is controlled by a set C2 in accordance with a complementary address code generated by registers RC21, RC22 and decoder DC2. The outputs from DC2 serve as respective opening inputs for the multiplexers of a set.
Patent GB-1439953-A (GB)
Title: Debris collector ship
IPC: E02B15/10
Filed: 1973-06-13
Abstract: 1439953 Scavenging vessels CHERNOMORSKOE TSENTRALNOE PROEKTNOKONSTRUKT BJURO 13 June 1973 28041/73 Heading B7A [Also in Division B1] Floating matter is removed from water by perforated scoop(s) 15 carried on a double chain conveyer 1 mounted on the hull of a ship, the inlet edge of the scoop being maintained parallel to the water surface by pairs of guide plates 18, 19. Liquid drains from the scoop 15 during its run between sprockets 8 and 6. When the scoop reaches its upper run it topples over, the fall being broken by shock absorber 25, to discharge its contents into receptacle 7 which may be provided with a perforated bottom 23 to allow liquid to drain therefrom. The tension of the conveyer may be adjusted by screw and nut means 10, 11.
Patent GB-206675-A (GB)
Title: Improvement in combined electric switches and plug couplings
IPC: H01R13/707
Filed: 1922-10-16
Abstract: 206,675. Marr, G. Oct. 16,1922. Plug couplings. - A hook 2, shown dotted, which normally projects into the path of a moving member of the switch such as the pin 7 to prevent closure of the switch, is adapted to be displaced when the plug 12 is inserted by the movement of a plunger 10 situated in one of the plug sockets. The hook 2 is mounted on a member 1 having an inclined end adapted to be engaged by the wedge-shaped end of the plunger 10.
Patent GB-805954-A (GB)
Title: Improvements in means for mounting a panel of glass or the like in a frame
IPC: E06B1/38
Filed: 1956-09-13
Abstract: 805,954. Shop fronts; glazing. MIEBACH, K. Sept. 13, 1956, No. 28043/56. Class 20(3) A light weigh beading rib 6 for mounting a glass pane 2 in a window or door frame, e.g. a shop window frame 1, comprises an upper arm 13 having a forked end 14, and a lower shorter arm 15 which is joined to the upper arm 6 by a vertical portion 12 and carries, within an end flange 16, a strongly resilient rib 18 having a wedge shaped tip 19. The beading 6 is firmly engaged to a number of holding angle bars 3 screwed to the frame 1 in iront of the pane 2, the forked end 14 of the arm 13 engaging end flanges 8, and the wedge shaped tip 19 of the rib 18 being tightly pressed into engagement with intermediate flanges 7, formed on the outer faces of the upright members 4 of the holding angle bars 3. The inner end of the resilient rib 18 presses firmly against the horizontal arms 5 of the holding angle bars 3, the end flange 16 engaging beneath the arms 5. In a modification the arm 5 of each holding angle bar is extended inwardly beneath the pane 2 and is screwed to the frame 1.
Patent GB-280768-A (GB)
Abstract: 280,768. Hofmann, A., and Conrad, E. March 7, 1927. Values actuated by explosions acting directly or on retaining-means.- In a safety device for gas burners, a piston 11, arranged in a cylinder 100, or in a tube. 2, containing a catalytic 3 is moved by the explosion produced by the ignition by the catalytic of escaping gas, the piston rod 12 closing the passage through the gas piping or operating a lever to close the gas tap. The tube 2 is sealed or moved awav from the burner by means of a thermostat when the burner is ignited. In the form shown, the tube 2 is provided with a weighted valve 5 connected by a wire 6 with a bimetallic strip 4. A spring book 19 on the piston engages a hook 20 to lock the piston in the closed position. To ensure the full explosion pressure acting on the piston, a wire gauze. or a partition, provided with one or more openings adapted to be closed by light laminated springs or flaps 17, is arranged between the catalytic and the burner. The piston 11 may be provided with openings 11<1> and flaps 17. Openings 15 are provided for the escape of the combustion products. A second catalytic may be mounted in a lateral bracket 18 having an opening provided with a flap 17. One or more of the ribs of a. gas cooking-stove may be made hollow to serve as the tube 2.
Patent GB-187245-A (GB)
Title: Improvements in controllers for electric circuits
IPC: H02J7/00
Filed: 1922-07-27
Abstract: 187,245. Ward Leonard Electric Co., (Assignees of Bullinger, F. H.). July 29, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Electromagnetic switches. - A contactor with shunt and series windings, which may be used as a cut-in and cutout switch in a carlighting system, comprises an E- shaped electromagnet 16 energized by the coils 17, 18 upon its central limb and an armature 20 secured by a spring plate 21 to the lowest pole face so as to move, when attracted, to bring a contact 27 into engagement with a fixed contact 28 against the action of an adjustable control spring 24<a>. The pole-faces project through to the back of the cover plate 3 and are formed with shoulders abutting on the cover plate. The polar structure is secured at the upper end by a plate 33 which projects into a notch in the upper limb and is secured by a screw 34 which secures also the fixed contact and a back stop 32a which may be bent up by pliers to adjust the initial position of the armature. The lower limb is secured in a similar manner by a screw 25 which secures also the phosphor-bronze pivot plate 21 to the pole-face, and a pair of abutments 23<a>, 23<b> into which one end of the control spring is notched, the other end being hooked within the armature. By bending up the abutments, the spring stress may be adjusted. Specification 183,839 is referred to.
Patent GB-1223986-A (GB)
Title: Improvements in or relating to steering systems for marine vessels
IPC: B63H25/28
Filed: 1969-06-04
Abstract: 1,223,986. Controlling speed of rudder operation. SPERRY RAND CORP. 4 June, 1969 [4 June, 1968], No. 28258/69. Heading B7V. [Also in Divisions G1 and G3] A ship's rudder is controlled at a fast or slow speed through an electro-hydraulic system comprising a potentiometer 40, adjusted manually by a helm 5 or automatically by a gyrocompass 6, and a potentiometer 41 mechanically linked to the rudder 4. The algebraic sum of the potentiometer signals and a rate-of-turn signal also derived from the gyro compass 6 is amplified at 7 and fed to switching units 10, 11. The power supply to operate the rudder is developed by a fixed delivery pump 15 and fed through a directional pilot valve 21 and main valve 24 to the rudder actuation cylinders 2, 3. In parallel with the main valve 24 is a dump valve unit 30 which normally by-passes a portion of the fluid flow through valve 24. When the output from amplifier 7 exceeds a preset value the by-pass circuit of valve unit 30 is closed by switch circuit 11, and valve 24 is fed with the total fluid flow from pump 15, causing the rudder to be operated at a higher speed.
Patent GB-1255316-A (GB)
Title: Process for producing multicolour effects on polyamide materials
IPC: C08G69/48
Filed: 1970-06-11
Abstract: 1,255,316. Dyeing polyamides. FARBWERKE HOECHST A.G. 11 June, 1970 [12 June, 1969], No. 28361/70. Addition to 1,176,118. Heading D1B. Multicoloured polyamide textile materials are produced by first treating a polyamide in an aqueous liquor of a water-soluble non- dyeing sulphurized phenol at 60-120‹C and pH 2-9 for 10-60 minutes, followed by mixing the polyamide with untreated polyamide and subsequently dyeing the blend of polyamides in an aqueous dye bath of pH 3-7 which contains an acid dye or any two or three component mixture of an acid dye, a basic dye and a disperse dye. The polyamide is preferably treated for 30 minutes with the sulphurized phenol in boiling aqueous solution and dyeing in presence of an organic acid e.g. acetic acid.
Patent GB-520831-A (GB)
Title: Improvements in or relating to anti-dazzle devices
IPC: B60J3/02
Filed: 1938-09-29
Abstract: 520,831. Goggles. MARTINEK, A. Sept. 29, 1938, No. 28372. Convention date, July 28. Addition to 512,993. [Class 97 (i)] [Also in Group XXXII] An anti-dazzle device for personal wear or vehicle windscreens to shield the eyes from an approaching source of light comprises several transparent screens arranged in a row across the field of vision, and so disposed, or adapted to be so disposed, as regards their distances apart and obliquity to the transverse direction in relation to their dimensions that an approximately straight-ahead ray passes through one screen only, while rays inclined at a substantial angle to the straight-ahead direction, e.g., lying between 10 degrees and 45 degrees thereto, pass through two or more screens. The screens may be of graded opacity, and may be supplemented by a single broad transverse screen. The device may comprise oval &c. screens 94 each mounted on a rod 95 connected by a ball and socket joint 96 to a telescopic rod 91 mounted for universal adjustment in a socket 92 carried by a headband 90. Fig. 5 shows the screens 120 mounted on rods 119 rotatably connected to sleeves adjustable on a frame 116 mounted on a pair of spectacles. The frame may, however, be mounted on a spectacle frame without lenses, or it may be itself in the form of a spectacle frame. The screen may be mounted on a transverse screen 121, Fig. 9, similarly carried by spectacles or a spectacle frame. Other arrangements for use on vehicles are described.
Patent GB-1490735-A (GB)
Title: Method of hardening steel
IPC: C21D1/09
Filed: 1974-06-26
Abstract: 1490735 Pulsed induction hardening F FRUNGEL 26 June 1974 [25 July 1973] 28386/74 Heading C7N [Also in Division H2]  A steel surface is induction-hardened by applying to it a first power pulse of less than 100 milliseconds to produce a temperature of approximately Ac 3 , followed after a time interval by a second pulse which raises the temperature above Ac3, after which the surface is allowed to selfquench. The first pulse width is preferably 20-50 millisecs and the time interval is 50-150 millisecs, while the energy input of the first pulse may be such as to dissolve any carbides present.
Patent GB-209841-A (GB)
Title: Improvements in and relating to electric motor control systems
IPC: H02P1/58
Filed: 1922-10-19
Abstract: 209,841. British Thomson-Houston Co., Ltd., Given, R. D., and James, E. G. Oct. 19, 1922. Charging and discharging; indicators.-An electric motor A which works a skip hoist of a, blast furnace, when reversed by a controller 3, starts an auxiliary motor B which rotates a hopper through a predetermined angle to distribute the charge, and afterwards cuts itself out by camoperated switches 15, 16. Another auxiliary motor D is arranged to run simultaneously and rotate an indicating pointer 10 at a speed proportional to the travel of the hopper.
Patent GB-671077-A (GB)
Title: A process for the manufacture of methyl methacrylate starting from the lactide and/or linear polycondensation products of alpha-hydroxy isobutyric acid
IPC: C07C67/327
Filed: 1949-11-07
Abstract: Methyl methacrylate is produced by effecting transesterification between the lactide and/or linear polycondensation product of a -hydroxy isobutyric acid and 5-15 molar equivalents of methyl acetate, and pyrolysing the product to convert the methyl a -acetoxy isobutyrate to methyl methacrylate and acetic acid.  The transesterification is preferably effected with an acid catalyst, suitably phosphoric, boric or sulphuric acid or an acid phosphate or sulphate.  With boric acid or ammonium bisulphate, temperature is 110-210 DEG  C.  The pyrolysis may be effected at 400-600 DEG  C. at a contact time of 5-60 seconds, using a tube having a length to diameter of 4-10 : 1 with an acidic packing comprising a polymerization inhibitor such as copper.  The methyl methacrylate may be isolated by fractionation, washed with water or brine, and the water frozen out.  The acetic acid may be esterified with methanol for re-use. The lactide and 5-100 per cent by weight of ammonium bisulphate may be kept at 180 DEG  C. while 9 molar equivalents of methyl acetate are passed through at such a rate that, with the vapours passing to a 10 theoretical plate column operating at a reflux ratio of 5-10 : 1, a product fraction temperature of 80-85 DEG C. is maintained.  The product is pyrolysed in a tube packed with, e.g. quartz coated with phosphoric acid and copper powder, and the vapours condensed.  Distillation up to 80 DEG  C. removes methyl acetate.  The residue is treated with 96 per cent H2SO4 at 40-90 DEG C., and methanol then added while removing a methyl acetatemethanol azeotrope.  Steam distillation of the residue isolates the methyl methacrylate.
Patent GB-285444-A (GB)
Abstract: 285,444. Ges. f³r Elektrische Apparate. Feb. 16, 1927, [Convention date]. Range-Keepers.-Comprises devices for indicating the range and angular position of an enemy ship with reference to the observer's ship, in which means are provided for producing a constant velocity and direction of travel of one part of the apparatus and by it automatically adjusting another portion of the apparatus whereby an indication of the range and angular position is given. The principle on which the apparatus is based is indicated in Fig. 1. A ship moving with uniform velocity along the line A0 - - A4 sights a ship moving along the line B0 - - B4 at the successive positions and in the directions indicated. A0 B0 represents the range when first sighted and if lines be drawn through A0 parallel to the successive lines of sight meeting a line B, - - B4<SP>1> drawn through the intersection of these lines with parallels from the successive position of the enemy ship, the lines A<0>, B‹, A<0>, B', etc., which indicate the range and also the relative angular position of the enemy ' ship. A line C0 - - C4 parallel to B0 - - B4<SP>1> will give intercepts which are a sub-multiple of the range. In the apparatus a threaded spindle 1 uniformly rotated by the motor 4 carries a nut 2 having a pin 3 engaging the slotted link 8 upon which ranges are graduated. The spindle 1 and nut 2, together with the driving means are mounted on a carriage 13 displaceable in two directions at right angle by the spindle 15 and the spindle 18. The axis 9 about which the link 8 is. turned is fixed in position and supports a control telescope 20. In use, the link 8 is set to the angle on the scale 11 corresponding to the direction A0 B, and the nut 2 is set to the range measured, being indicated on the scale shown. According to the values found after a determined interval corresponding to the position A, B, Fig. 1, a point 21 is obtained. The spindle 1 is now set so that it lies along the line 3, 21, the motor being started and the rotation of the spindle 1 controlled by friction gearing 5 so that the objective remains sighted in the telescope 20 when coincident with the link 8. The angular direction and range at any moment may then be read off the scales 8. In a modified form an additional link is provided to allow for the time of flight of the projectile. Further modifications are also described in which the slotted links are replaced by grooved cylinders or variable electric resistances.
Patent GB-484878-A (GB)
Title: Improved toast-making device
IPC: A47J37/08
Filed: 1937-10-20
Abstract: 484,878. Toasting-apparatus. CROFT, C. M., and GLADWIN, J. R. F. Oct. 20, 1937, No. 28581. [Class 28 (i)] A toaster comprises plates 18, heated by gas-burners positioned between them and supplied by pipes 5, 11 controlled by a valve handle 6, grids 26 positioned in front of the hotplates to space the bread 31 therefrom, and carrier frames 28 hinged at 27 to side frames which secure the plates 18 in position, the frames 28 being spring-urged towards the grids 26. The side frames each comprise two parts 13, 14 nesting one within the other with an interposed lining of asbestos. The frames 13 have channel-shape recesses 13b in which the edges of the plates 18 are held, and lugs 13a in which the pivot holes 27 are formed. The parts 14 have depending lugs which engage in holes in the base 1, and inwardly projecting top flanges to which the roof member 17 is secured. The whole of the parts are held together by tie rods 20 which pass through the roof 17 and through the base, tightening being effected by nuts 25, 21. The carrier frames 28 have spikes 20 for impaling the bread. The springs 32 of the frames 28 are anchored in holes 33 in the lugs 13a. The grids 26 are made of wire secured to the platen 18. The base 1. and roof 17 are lined with asbestos ; and a lighting aperture 16 is provided in one set of end frames 13, 14.