baber/WOPTO huggingface dataset:
Patent GB-1474403-A (GB)
Title: Multiple-frequency signal receiver
IPC: H04Q1/453
Filed: 1974-07-11
Abstract: 1474403 Automatic exchange systems; V.F. receivers INTERNATIONAL STANDARD ELECTRIC CORP 11 July 1974 [12 Sept 1973] 30697/74 Heading H4R [Also in Division G4] A receiver for n/m frequency signals has, for each possible frequency, a channel circuit containing a series resonant filter feeding a parallel resonant filter which feeds two detector circuits also responsive to the two filters respectively, via respective threshold circuits, and an evaluator responsive to the series filter can enable an output circuit fed from one detector circuit and can be disabled by the other detector circuit. In Fig. 1, a signal at IN consisting of 2 out of 5 frequencies is band-pass filtered BF and amplified A1 before passage to 5 channels IRi (one shown) in parallel, each channel having a series resonant filter F2i in series with a parallel resonant filter F1i, tuned to the same respective one of the frequencies, the parallel filter F1i having 3 outputs 2i, 3i, 4i of progressively greater amplitude (tapped from the same inductor). The output from 3i is compared in a detector DET1i with a threshold from a circuit THR4 and if great enough provides a signal through an OR1i to an input EVI1 of an evaluating circuit EV. The output of amplifier A1 is rectified Re1 to enable evaluating circuit EV to check whether precisely 2 of the channels IRi are providing outputs from their OR1i circuits. If so, a bi-stable BDT is set to set a bi-stable BDi in those channels having an output from DETli (via AND1i), BDi sustaining the EVI1 input to EV via OR1i. The output from 4i of filter F1i is compared in a detector DET2i with a threshold from a circuit THR1 and if great enough in any channel, evaluating circuit EV is disabled at input EVI2, except that those channels with an output from OR1i have the recpective detectors DET2i disabled via inverters INZi. While the bi-stable BDT is set, the filters F1i are shorted via diodes D7i to prevent double detection of a frequency before and after a noise signal. The circuits THR4, THR1 provide their threshold voltages in proportion to rectified outputs of the filters F2i, F1i using rectifier Re2i, Re3i, the threshold from THR4 being the larger by about 10 db. THR4 includes a circuit to adjust for impulsive noise. The outputs of the bi-stables BDi go to a computer for recognition. The receiver signals the transmitter which then removes its signals. Application to telephone systems is mentioned.
Patent GB-903060-A (GB)
Title: Improvements in or relating to electric cable glands
Inventor: LAWMAN WILLIAM EDWARD
IPC: H02G3/06
Filed: 1958-09-26
Abstract: 903,060. Mechanical couplings for cable sheathing. BRITISH ENGINES Ltd. Sept. 25, 1959 [Sept. 26, 1958; Jan. 30, 1959], Nos. 30753/58 and 3497/59. Class 38 (1). A cable gland comprises a pair of members adapted to be secured together, at least one of said members having a lining or filling of soft material, such as lead, which is contracted on to the cable by the action of securing the members together. The drawing accompanying the first Provisional Specification (Fig. 1), shows one embodiment in which bush 10, tapered at one end at 16c has a lining 1 of soft material keyed therein by a thread 14b and expanded into an undercut portion 16a, 16b in the portion 16c. The co-operating nut 11 also has a lining 1 keyed therein by a thread 23a and terminating at a tapered surface 22 which contracts the portion 16c and hence the lining 1 of bush 10 on to the cable when the bush and nut are screwed together. The bush and nut may be completely filled with soft material and bored out to size on site. The material in this case may be cast in plain bores in the bush and nut. Alternatively, the lining may be omitted from the nut 11, the bore in the outer end thereof corresponding to that of the lining in the bush. Fig. 4 of the drawing accompanying the Complete Specification shows a gland embodying the latter alternative. Also the nut 19 has an outer portion of uniform diameter instead of being tapered to receive the cable armouring, an outer clamping member 28 in this case contracting collet members 40 on to the cable armouring. Specification 852,132 is referred to.
Patent GB-1026021-A (GB)
Title: Improvements in spark-gap type of surge arrestor for a d-c system
IPC: H01T4/16
Filed: 1964-08-04
Abstract: 1,026,021. Spark apparatus. GENERAL ELECTRIC CO. Aug. 4, 1964 [July 31, 1963], No. 30758/64. Heading H1D. [Also in Division H2] A surge diverter for a low voltage D.C. circuit comprises electrodes 22, 24 forming an arc initiating gap 25a widening out to an arc extinguishing gap 25, and a trigger electrode 32 which sparks across to the electrode 24 from which it is separated by an insulating member 34 of high dielectric constant. The electrodes are held between insulating plates 45 secured to an end cap 48 of a sealed gas-filled envelope 21, magnetic blow-out coils 28, 30 being provided to facilitate arc extinction. Preferred materials are copper-tungsten or stainless steel for electrodes 22, 24, barium titanate for member 34, and aluminium silicate for plates 45. Preferred gas is hydrogen at a pressure of 10 to 20 inches of mercury. Spacing between plates 45 should be between 1/32 and 3/16 inch. For higher voltage applications air may be used instead of hydrogen.
Patent GB-805225-A (GB)
Title: Improvements in or relating to boilers and the like
Inventor: PROCTOR HARRY
IPC: F23L9/00
Filed: 1955-10-28
Abstract: 805,225. Solid fuel fired boilers. PROCTOR Ltd., J. Oct. 17, 1956 [Oct. 28, 1955], No. 30851/55. Class 51 (1). A boiler 10 with a mechanical stoker which includes a hopper 14, ram box 16, ram 13 and a mechanical shovel has an inclined plate 18 in the hopper to provide a space 17 into which air is led by a flexible metal pipe 22 from an air duct 26. The pipe 22 is connected to an opening 21 in the ram box 16 by a coupling 20, and a butterfly valve 28 housed in a pipe coupling 24 on the duct regulates the amount of air passing through the pipe 22. A damper may be inserted in the coupling 20 instead of the valve 28 and a rigid pipe may replace the flexible pipe 22.
Patent GB-228121-A (GB)
Title: Improvements in or relating to endless track vehicles
IPC: B62D55/24
Filed: 1924-12-24
Abstract: 228,121. Kegresse, A. Jan. 23, 1924, [Convention date]. Endless-track vehicles.- The endless-track comprises a flexible band of trapezoidal section having two parts 4, 5 joined or cemented together, the part 4 on which the rollers run being constructed of flat canvas pieces or rubbered cloth and having sides 2 engaged by a pulley, while the part 5 which forms the tread and is in contact with the ground consists of blocks of semi-resilient material such as rubber. Gaps and notches are formed in the blocks 5 to give better ground adhesion and to make the band more flexible. Specification 164,321 is referred to.
Patent GB-1011528-A (GB)
Title: Braking system
IPC: B60T11/28
Filed: 1963-08-06
Abstract: 1,011,528. Hydraulic brakes. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHIN-UND ARMATURENFABRIK KOMM.-GES. Aug. 6, 1963 [Sept. 8, 1962], No. 30946/63. Addition to 1,011,527. Heading F2F. A braking system particularly for motor vehicles in which pressure medium supplied by a source 9 operates the brakes connected to port 23 and in which pressure medium from a master cylinder 3 acts on a brake valve control piston 28 to permit pressure medium from the source to operate the brakes and a piston 49 spring-loaded in a casing 7 is characterized in that the chamber 47 communicates with the chamber 20 of the master cylinder via passage 46 and with a reservoir 14 via passages 48, 15 in the piston and casing, while the chamber 50 communicates with the chamber 53 which is pressurized by the master cylinder to actuate the piston 28. As shown, two sets of brake valves and control pistons actuating separate brake lines are provided, fluid pressure from the master cylinder moving both pistons 28 to the right to move valve piston 26 and thereby allow fluid pressure from the pumpfilled reservoir 9 to flow via passage 36, open valve 34, chamber 38 and passages 39, 40 to the brakes. If the pressure fails to build up in the chamber 53 by the master cylinder a tappet 56 rigidly connected to the master cylinder piston strikes a surface 61 on a cut-away tube 57 to rotate the same which through surface 62 moves the control pistons 28 to open the brake valves and so actuate the brakes.
Patent GB-173658-A (GB)
Title: Improvements in gear shifting or changing mechanism
Filed: 1920-11-02
Abstract: 173,658. Stevens, W. C. Nov. 2, 1920. Controlling variable-speed gearing. - Gear-changing mechanism suitable for vehicles comprises one electric solenoid for moving gears to neutral position, and another to bring into operation a pre-selected gear change. These solenoids 7, 8 respectively, Figs. 1 and 2, act on a plunger 9, which operates a lever 3. Two selector bars 1, 2 are moved to right and to left from neutral position, to effect four changes in a box 99, Fig. 10. The lever 3 is connected by gear teeth 6 to a companion lever 4, so that these levers close in or open out together. When the solenoid 7 is energized, the plunger 9 moves to the left, the levers 3, 4 close in, and, striking lugs 16 on the bars 1, 2, bring these bars to the neutral position of Fig. 1. The levers 3, 4 carry pairs of spring pawls 20, 21 and 22, 23, respectively adapted to engage snugs 14, 15 on each of the bars 1, 2. An independent selector cam 32, Figs. 4 and 7, which engages heels 30, 31, 33, 34 on the pawls, is then moved so as to tilt one of the pawls such as 23, Fig. 1, into engagement with a snug 15. On energizing the solenoid 8, the levers 3, 4 move apart, and the selected bar &c. moved. The solenoids 7, 8 are modified to give an increased initial pull on the plunger 9. To this end, an independent core 80, 81 is provided in each coil of greater diameter than the plunger so that as the plunger moves out of the coil, the core is arrested by a shoulder 84. 85 on a non-magnetic sleeve 83. This makes an air-gap between the core and the plunger. Buffers 86, 87 cushion the shock. The solenoids are controlled by the main clutch pedal 100, Fig. 10, connected to a rod 69, Figs. 1 and 2. The rod 69 is connected by a trip-latch 70 to a switch-rod 57, the arrangement being such that as the pedal 100 is depressed, the neutralizing-coil 7 is energized, and then de-energized. Continued movement energizes the coil 8 to separate the levers 3, 4. A lug 78 on the lever 3 strikes a trip lever 76 which releases the catch 70, when the switch rod 57 springs back to its extreme left position. For the coil 7 to be energized, a contact 54 must touch a contact 49, Fig. 9, while an insulated contact 55 must also bridge across between separated contacts 50, 51. For the coil 8 to be energized, a contact 56 must touch a contact 52. The pedal 100 may stop when the contact 55 has left the contacts 50, 51, the coil 7 being de-energized, before the contact 56 has touched the contact 52. The plunger 9 can be locked by a pin 90 released by a cam 91 on the switch-rod 57.
Patent GB-478421-A (GB)
Title: Improvements relating to automatic steering devices for ships
IPC: G05D1/02
Filed: 1936-04-14
Abstract: 478,421. Automatic control systems. SPERRY GYROSCOPE CO., Inc. April 14, 1936, No. 30999/37. Convention date, April 13, 1935. Divided out of 478,344. [Class 38 (iv)] Steering.-An electric steering device for ships comprises a pilot-house controller and auxiliary limit switches at the controller operated from the rudder and capable of adjustment to determine the limits of rudder throw regardless of the amount of turn desired. Means for changing over to manual control of the rudder may be incorporated In one form a self synchronous transmission 90, 91 drives a shaft 62 in the pilot house from the rudder R. Reversed worms 63, 63<1> drive cams 64, 64<1> co-operating respectively with limit switches 77, 77<1> normally engaging contacts 80, 80<1> in series with the rudder motor 65. A knob 66 engages a screw 68 to cause longitudinal motion of the shaft 62 whereby the relation between the cams and the switches may be changed to set the limits of rudder throw as desired. The cams shown are, by the provision of back contacts on the switches, designed to effect reversal of the rudder motor if the rudder should lie beyond such limits. Manual control of the rudder may be obtained by operating switches 83, 86. In an alternative arrangement the worm wheel 31, which is operated jointly by compass and manual means as described in Specification 478,344 and operates the main controller 33 at the rudder through a self-synchronous transmission, in the arrangement according to Fig. 1, operates the main controller, which is placed in the pilot house, by a mechanical connection comprising a cam groove and rack bar, the follow-back connection from the rudder being a self-synchronous transmission. In this form the limit switch cams are driven by the main controller shaft and the switches are mounted on toothed discs loose on this shaft so that they may be operated by pinions simultaneously actuated by an adjusting knob.
Patent GB-305306-A (GB)
Title: Means for mechanically cutting rubber or the like or material treated with rubber orthe like
IPC: B26D1/00
Filed: 1927-11-19
Abstract: 305,306. Macintosh & Co., Ltd., C., and Campbell, J. D. Nov. 19, 1927. Stationary - cutter machines; guillotine machines. -In a machine for cutting longitudinally and transversely a web of rubber or material treated with rubber in which the pieces are not completely severed, the web is fed by a conveyer 2 over a bed roll 6 co-operating with slitting discs 10. The discs are mounted on antifriction bearings on shafts vertically adjustable by wedges in holders 23 transversely adjustable on a beam 11. The workpiece is carried by a conveyer 13, moved intermittently by a pawl mechanism 38, beneath a transverse cutter 17 vertically reciprocated in guides 19 by a cam mechanism 35. The cutter 17 co-operates with a bar round which the conveyer 13 is guided by pulleys 14. The parts are driven from an electromotor 9 through appropriate gearing, and the cutters are adjusted so that the pieces are not competely severed.
Patent GB-648525-A (GB)
Title: Thermally sensitive resistor suitable for controlling an electric circuit
IPC: H01B1/00
Filed: 1948-12-01
Abstract: 648,525. Non-metal resistances; wire and ribbon resistances; casings, enclosures and mountings for resistances; temperature variable resistances. INCANDESCENT HEAT CO., Ltd., and HOWARD, J. R. Dec. 1, 1948, No. 31105. [Class 37] A flame or heat-sensitive resistor comprises helical electrodes of heat-resisting wire embedded within a resistance element of titanium dioxide and bonded thereto by thorium dioxide. Two platinum wires are formed as separate helices around a refractory tube having a wire-free part secured within an enclosing tube. The projecting element thus formed is immersed in a warm solution of thorium nitrate and fired. The coating of thorium dioxide so formed constitutes a bond or flux between the platinum coils and a solution of titanium dioxide into which the coils are dipped whilst still warm. Further treatment includes dipping the element in a sillimanite or alumina solution and firing at 900-1000‹ C. and then dipping in a sillimanite paste. The completed resistor is mounted in a tubular holder. In use as a furnace control element the resistor is incorporated within the main or pilot jet whereby should flame extinction occur the resistance of titanium dioxide abruptly increases to such an extent as to cause the operation of safetydevices.
Patent GB-169112-A (GB)
Title: Improvements on or in connection with brushes
IPC: A47L13/12
Filed: 1920-11-03
Abstract: 169,112. Butler, A. N. Nov. 3, 1920. Scrapers, pan and like.- A scraper fitting for attachment to a brush comprises two triangular sides a meeting along a forwardly - situated edge b so as to produce a forwardly and outwardly - directed elongated doubleedged scraper. The fitting may be formed from a single blank of sheet metal or may be constructed of rubber.
Patent GB-228675-A (GB)
Title: Improvements in or relating to receiver supports for telephone, wireless or analogous apparatus
IPC: H04R1/10
Filed: 1923-12-11
Abstract: 228,675. Hayward, E. Dec. 11, 1923. Head-sets.-Telephone receivers are supported on a yoke piece adapted to be fitted over the shoulders of the user. Two arched strips a, Fig. 1, engage over the shoulders and are connected in a resilient manner by a third arch c. The front portion of each shoulderarch shown in dotted lines in Fig. 2 may be omitted. The three arches may be formed from a single strip bent as shown in Fig. 2, and a transmitter h may be mounted on the middle of the strip. A spring g attached to a screwed rod g<1> fixed by means of a nut g<2> serves to regulate the position of the arches. The shoulder arches may be joined by a strip lying over the back of the user and the receivers be supported on an arch fixed to a bracket on this rear portion. Each receiver d is mounted on an arm e having a slot e<1> through which a pin having a clamping nut f is passed, but it may be mounted on a spring arm. Each receiver d may be carried by a rod d', Fig. 8, adjustable back and forth in a bulb b<1> which can turn in slots in brackets b. The rod d' is surrounded by a spring d<2>. In another form, Fig. 5, the shoulder strips a carry an arched support a<1> from which is suspended a carrier I for the receivers d. The carrier l is adjustable by means of a stem carrying a head m<2> and a ball m<1> which passes through a slot a<3> in the support a<1> and a slot l<1> in the carrier l. The head m<2> is attached to opposed springs n, and frictional engagement of the parts is ensured by a spring arm pressing together the ball m<1>, the carrier l and the support a<1>. The strips or yokes in all modifications may be covered with leather or similar material, and if they are made of two wires, these may be kept apart by inserting them in the edges of a leather covering. The yoke may be shaped to engage under the arms of the user instead of over the shoulder.
Patent GB-857732-A (GB)
Title: Pressure relief blow-out device
IPC: F16K17/04
Filed: 1958-09-30
Abstract: 857,732. Preventing bursting. WHITING, J. C. Sept. 30, 1958 [Dec. 2, 1957], No. 31198/58. Class 99(2). [Also in Group XXIX] A pressure-relieving device, e.g. for a compressed air line, comprises a length of pipe 10 with spaced apart collars 11, 12 and a circumferential row of holes 13 therebetween. Each collar is formed on its inner face 15 with an annular groove 14 from which leads a tangential groove 18 opening into the periphery of the collar. The grooves 18 are opposite to each other to receive the end of a strip of sheet metal &c. 19 which is slid around the grooves 14 to cover the holes 13. The material width equals the spacing of the bottoms of the grooves 14 and its length is greater than the circumference of the pipe so that its ends overlap. On excess pressure in the pipe, the strip buckles and curves in a direction normal to its direction of curvature so that its edges move towards each other and ultimately spring out of the grooves 14 to relieve the pressure in the pipe.
Patent GB-1177409-A (GB)
Title: Improvements in or relating to Liquid Heaters
Inventor: MANSFIELD HENRY
IPC: F24H1/20
Filed: 1967-07-07
Abstract: 1,177,409. Water heaters. H. MANSFIELD. 8 July, 1968 [7 July, 1967], No. 31320/67. Heading F4A. A water heater comprises a cylindrical water container 12 of glass-fibre reinforced plastics material closed by a stainless steel plate 13 which supports tubes 14 for heating the water, burners 20 associated with the tubes, inlet and outlet water pipes 24, 25, and thermostats 28, 28<SP>1</SP>. The tubes 14 are U-shaped and each has its lower limb connected to an appropriate opening 16 ... 18 in plate 13 and its upper limb connected to an opening 16<SP>1</SP> ... 19<SP>1</SP> connected to a flue box 22. The inner ends of the pipes 14 are supported on struts 15 and the burners 20 are received in the openings 16 ... 19. The plate 13 has a cylindrical projection 35 which supports the end of the cylinder 12 and plates 36 act as stiffeners.
Patent GB-1199346-A (GB)
Title: Process for Producing [D-(-)-alpha Aminobenzyl] Penicillin Trihydrate
IPC: C07D499/68
Filed: 1968-07-01
Abstract: 1,199,346. [D- (-) α-Aminobenzyl] penicillin trihydrate. FERMENT CHIMICA S.R.1.. 1 July, 1968 [8 April, 1968], No. 31358/68. Heading C2A. [D - ( - ) α - Aminobenzyl] penicillin trihydrate in pure form is obtained from a reaction mixture containing it, an impure specimen or [D-( - ) α-aminobenzyl] penicillin having a lower hydration degree by (a) dissolving said [D-( - ) α-aminobenzyl] penicillin in an organic or inorganic base at pH 7 to 12 in a watermiscible organic solvent having a water content of from 10 to 60% and removing any of the insoluble impurities which are present; (b) acidifying the solution with an organic or inorganic acid at pH 3 to 7 while bringing the water content to or maintaining it at 20 to 60%; and (c) recovering [D-( - ) α-aminobenzyl] penicillin trihydrate in crystalline form. The organic solvent may be dimethyl-formamide, acetone, dioxane or tetrahydrofuran. Specification 902,703 is referred to.
Patent GB-1068237-A (GB)
Title: An improved method of and means for straightening rolled bars
IPC: B21B43/08
Filed: 1964-08-04
Abstract: A method of straightening lengths of hot rolled bars in which the bars are held by grippers at their ends whilst passing over a cooling bed is substantially the same as that disclosed in Specification 974,994 but the ends of the bars are subjected to an upsetting operation prior to being lowered into engagement with fork shaped conveyer mounted members which replace the gripper units.  In operation each bar coming off the shoot (7a) takes up a position on a reciprocable support (66), the ends being supported by arms (48), the jaws are closed the bar ends upset after the arms (48) have been lowered by the advancing ram (46) and the upset bar released to fall and engage "V" grooved forks (55). The bars are supported along their lengths by a plurality of similarly constructed intermittently operated endless chain conveyer units.  After cooling each bar is removed from the forks (55) by ejectors (61) and passed over a shoot (62) to a clamping means (63) of a sawing plant (64).  After upsetting the upset ends of the bars may be water cooled.
Patent GB-188224-A (GB)
Title: Improvements in or relating to laminated springs
IPC: F16F1/18
Filed: 1921-11-24
Abstract: 188,224. Woodhead & Sons, Ltd., and Woodhead, G. A. Nov. 24, 1921. Laminar springs.-In laminar springs for vehicles in which lateral displacement of the leaves is prevented by the use of clips of the stirrup or yoke type, the free ends of the clips are rigidly attached direct to the spring. This is effected by providing the ends of one or more of the leaves with integral lugs 6 which are perforated at 7 to receive the screwed ends 8 of the clip 9, nuts 10 being provided to secure the clip in position. The clip 9 is preferably of triangular section, and the lugs 6 may be reduced in thickness to form seatings 11 for the nuts.