baber/WOPTO huggingface dataset:
Patent GB-1028591-A (GB)
Title: Improvements in or relating to capacitor microphone amplifiers
IPC: H04R19/04
Filed: 1964-06-05
Abstract: 1,028,591. Transistor amplifying circuits; microphone circuits; frequency modulation. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. June 5, 1964 [June 7, 1963], No. 23411/64. Headings H3R, H3T and H4J. [Also in Division H2] In a head amplifier for a capacitor microphone of the type in which oscillations from a high-frequency generator are frequency-modulated from the microphone, the modulation is not effected directly but through the intermediary of a voltage variable capacitor. Transistor 1 is connected as a Clapp oscillator, the emitter being connected to the join of capacitors 2, 3 which are connected in series and tune inductor 4 which is between base and ground. Chokes 5, 6 allow the passage of D.C. to respectively the emitter and a pair of voltage-variable capacitor diodes 8, 9 oppositely connected in series with inductor 4. The capacity of diodes 8, 9 is varied by the audio signal from microphone 10, which is fed with D.C. over a highvalue resistor 10 and coupled to the join of diodes 8, 9 via D.C. blocking capacitor 11 and H.F. choke 12: the diodes are provided with a standing bias from source 14, via resistor 15. The source 14 may comprise a decoupled resistor in the emitter circuit of transistor 1. The choke 5 may comprise the primary of a step-up transformer, the secondary of which feeds a rectifier 21 supplying the D.C. to microphone 10. The frequency-modulated output from the oscillator is applied to a discriminator 16; negative feedback may be obtained by using the output as source 14. Choke 12 may also be replaced by a resistor: in addition, terminal a may be connected to earth or a small negative potential and a high negative potential applied to the lower electrode of the microphone, in which case source 14 and resistor 15 may be omitted.
Patent GB-1520734-A (GB)
Title: Electrically powered sirens
IPC: G10K7/04
Filed: 1974-05-28
Abstract: 1520734 Sirens THOMAS ASHWORTH & CO Ltd 23 May 1975 [28 May 1974] 23497/74 Heading G5J An electrically powered siren has components which are snap-fitted together (i.e. motor 40 to plate 39, plate 39 to cover 13, cover 13 to body 12); in assembly, the motor being brought up to, and then rotated with respect to, the plate 39 to effect the snap-fit. Screws may be inserted into slots 28 for added security. The casing may be formed of plastics material. There may be an additional body part, snap-fitted or screwed to the main body, and containing additional equipment, e.g. transformer 58. The motor may be battery driven. Reference has been directed by the Comptroller to Specification 1,300,905.
Patent GB-415266-A (GB)
Title: Improvements in or relating to portable radiators
IPC: F24H3/00
Filed: 1933-08-23
Abstract: 415,266. Radiator stoves. SKINNER, G. W., 343, Jersey Road, Osterley, Middlesex, and LARDNER, M., 59, New Oxford Street, London. Aug. 23, 1933, No. 23500. [Class 126.] A radiator comprises a plurality of radiating sections 1, 2 through which fluid circulates from a central heater formed of tube coils 4, 5, the coils being connected at their upper ends to a heater 6 leading to the tops of the radiating sections, and the bottom ends of the coils being connected each to one of the radiator sections. A separate circulation path is thus provided for each section. The coils shown are in the form of conical helices, and are heated by an oil lamp. The coils, heating means, and header may be surrounded by a casing 13. Gas or electric heating means may be employed.
Patent GB-476517-A (GB)
Title: Improvements in and relating to oil cans
IPC: F16N3/08
Filed: 1936-08-28
Abstract: 476,517. Pumps. KAYE & SONS, Ltd., J., and DIGGLE, H. Aug. 28, 1936, No. 23605. [Class 102 (i)] [Also in Group XVII] A force-feed lubricating-can comprises a pump cylinder C receiving a spring-controlled plunger A and having at one end an oil inlet suction valve C<1> protected by a filter F. On the down stroke the plunger engages and forces inwardly the rounded stem V<3> of a spring- controlled valve V disposed in a thimble T communicating with an opening in the wall of the cylinder, allowing oil to be forced into the spout N. A cross-bar D may be provided to restrict the stroke of the plunger.
Patent GB-360942-A (GB)
Title: Improvements in or relating to television and like apparatus
IPC: H04N7/06
Filed: 1930-08-06
Abstract: 360,942. Television transmitters. BAIRD, J. L. and TELEVISION, Ltd., 133, Long Acre, London. Aug. 6, 1930, Nos. 23608/30 and 11354/31. [Class 40 (iii).] Relates to television transmitters employing a mirror drum simultaneously scanning an object in a plurality of contiguous zones. According to one feature of the invention, a lens 19, Fig. 3, is placed at a distance equal to its focal length from the mirrors 14 so that should the distance between the object 10 and the drum 13 alter, no alteration need be made in the distance between the screen 17 and the drum 13, or in the size and the distance apart of the apertures 18 associated with the cells 15. The lens 19 may be placed between the drum and the screen. The object 10 may be floodlighted or, according to another feature of the invention, spots 20, 21, 22 or strips 25 of light may illuminate the elemental areas being scanned by the drum 13. This may be achieved by using a second drum rotating synchronously with the first to reflect light on to the picture, or, as illustrated, the scanning drum may be employed in conjunction with a suitably shaped light source 24. According to a further feature of the invention, the object may be scanned by a plurality of mirror drums, preferably synchronously rotated, each associated with a lens, a cell, and an apertured screen. A practical embodiment of apparatus according to the invention comprises a mirror drum 13, Fig. 4, partially enclosed by a shield 29 ; a lens 19 mounted in an adjustable casing 30 containing the apertured screen 17 and the cells 15; and a mask 34 limiting the solid angle over which exploration is effected. The individual mirrors may be adjustably mounted between suitable springs and three screws, Figs. 6 and 7 (not shown). According to the first Provisional Specification the object may be spot-lighted by a rotating disc. Specification 348,638 is referred to.
Patent GB-1423996-A (GB)
Title: Entry equipment for a rolling mill
IPC: B21B39/02
Filed: 1972-05-19
Abstract: 1423996 Rolling mills DAVY-LOEWY Ltd 19 April 1973 [19 May 1972] 23666/72 Heading B3M [Also in Division B8] Entry equipment for a rolling mill stand comprises two coil supporting devices for paying out strip to the stand, each device having a separate feed mechanism for directing the leading end of a strip to the stand. As shown, strip from a coil 21B is being fed to the rolls 10 of the stand through pinch rolls 14B and a roller leveller 15B. The leading end of a strip from coil 21A has been fed through pinch rolls 30 and 14A and roller levellers 31 and 15A to a point 34A, ready for subsequent insertion between the mill rolls 10. When the end of coil 21B has passed through the stand, the assembly of levellers and pinch rolls 14 and 15 is lowered in a framework 18 until the point 34A is aligned with the mill pass line 12. The leading end of coil 21A can then rapidly be fed through the mill. The leading end of a further coil located on spool 20B will then be prepared in a similar manner by feeding it to rolls 14B and leveller 15B. Peeler aprons 34 and 25 assist in peeling and guiding strip from the coils. In an alternative arrangement (Fig. 2, not shown), the coils are disposed one above and one below the pass line, and a common, pivotable pinch roll is used in the feeding of strip from both coils.
Patent GB-186900-A (GB)
Title: Improved manufacture of methane
IPC: C07C1/02
Filed: 1922-08-31
Abstract: The process described in the parent Specification for the production of methane from carbon monoxide and hydrogen is modified by introducing carbon dioxide into the gas mixture either before the reaction starts or before it is completed.  The theoretical proportions of carbon monoxide and hydrogen, namely, 1 : 3, may then be employed.  According to the examples, (1) a mixture of carbon dioxide, carbon monoxide, hydrogen and nitrogen is passed over heated nickel, prepared by reducing precipitated nickel carbonate; water is then eliminated and the resulting gases are passed over a second nickel contact; after removal of water and carbon dioxide, the product consists of methane and nitrogen; (2) ordinary illuminating gas, completely desulphurized and freed from cyclic hydrocarbons, is mixed with a little carbon dioxide and circulated over reduced nickel with periodic separation of the water formed; the gas is then conducted over a further nickel contact and after cooling, the carbon dioxide is removed; a mixture of methane and nitrogen remains. Specification 161,924 is referred to.
Patent GB-145317-A (GB)
Title: Miners' and like safety lamps
IPC: F21L23/00
Filed: 1919-09-26
Abstract: 145,317. Rees, D. W. Sept. 26, 1919. Miners' safety lamps.-In a miner's safety lamp, light is obtained from an incandescent mantle heated by a combustible mixture of oil vapour and air, compressed air from a reservoir A being used to vaporize and inject oil from a container B through a burner tube j to beneath the mantle G. A pump b having a filter H compresses the air in the reservoir A and forces it through a heating- coil c and pipe t to an injector comprising the tubes f and g having holes i<1>, i for the entry of air and oil and a needle valve h, the tube g being rotatable. The combustible mixture from the tube f passes up the burner tube j and is controlled by cones Q, Q<1> held on a wire k adjustable by a thumb-screw l, the lower cone Q<1> preventing flooding of the burner and stopping excessive gas pressure from reaching the mantle. The mantle is supported on a spiral spring z and may be raised from the burner when testing for gas, which is done by admitting air through apertures in a ring v which may be rotated to register with apertures in a ring O. If ga.s near the roof is to be tested for, the external air may be admitted through a pipe y. An insulated wire P is provided to light the lamp when assembled, the passage of an electric current rendering a fine platinum wire close to the burner incandescent. The holder ring may be secured in position by a magnetic lock consisting of a spring- pressed iron bolt engaging in recesses in the ring and released by application of a magnet.
Patent GB-1035010-A (GB)
Title: Filtering devices for gaseous media
IPC: B01D46/18
Filed: 1965-06-03
Abstract: The two ends of a length of filter mat, used in a gas filter of the type in which a filter mat is fed continuously or intermittently from a storage roll to a take-up roll across a gas conduit, are fitted with the two halves of a zip fastener, whereby a joint is made between the trailing end of a used length and the leading end of a new length, to maintain continuous filtration. The mat is a compressible medium, impregnated with sticky tricresyl phosphate and entrained round staggered rollers across the conduit.
Patent GB-406695-A (GB)
Title: Welding methods and tools particularly for dental purposes
IPC: A61C13/20
Filed: 1932-08-25
Abstract: 406,695. Couplings. ROBERTSON, F. I., 17, Harley Street, London. Aug. 25, 1932, Nos. 23807 and 30324. [Class 38 (i).] One terminal of a battery 13 for supplying current to a hand welding tool 1 is connected through resistances 18 of different value and a copper strap 17 to lead blocks 15. The circuit is closed by tapping or wiping the selected block with the end of electrode 4.
Patent GB-682481-A (GB)
Title: Improvements in and relating to apparatus for applying a film of fluid material to the surface of an article
Inventor: KERMODE ERIC MARSDEN
IPC: B65C9/22
Filed: 1950-11-12
Abstract: <PICT:0682481/III/1> <PICT:0682481/III/2> An Apparatus for applying a film of a material such as gum to, for example, labels in a labelling machine, comprises a plate, to collect a film of the material on its upper surface, mounted to be reciprocated relatively to a supply of liquid material in a bath, and a transverse scraper mounted to be oppositely reciprocated away from and into the operative position whereby to operate only during the outward movement of the plate. Referring to the drawings, the plates 10 with longitudinal curved surfaces are carried on arms 10a locked to transverse shaft 11 mounted for rotary reciprocation in blocks 12 to displace the plates into and out of gum bath 13.  Locked to each shaft 11 is an arm 16 carrying spaced lugs 16a.  A lid 17 for the bath carries studs 18, nuts 18a and springs 18b forming a mounting for scrapers 19, while a pair of pawls 20 are pivotally mounted on a side of bath 13.  Rotary reciprocation of shafts 11 causes plates 10 to move into and out of bath 13 and corresponding movement is given to arms 16 so that at end of outward stroke lugs 16a raise pawl 20 which raise scrapers to inoperative position and at end of inward stroke lugs 16a depress pawl to allow springs 18b to force scrapers back into operative position.
Patent GB-632370-A (GB)
Title: Signal transmission systems incorporating volume limiters
IPC: H03G3/22
Filed: 1946-08-12
Abstract: 632,370. Automatic volume control. WESTERN ELECTRIC CO., Inc. Aug. 12, 1946, No. 23859. Convention date, Sept. 18, 1945. [Class 40 (iv)] [Also in Group XL (c)] A volume limiter comprises two directlyheated thermistors, one being more sensitive than the other or being situated where the energy level is higher than at the other, the time constant of the combination thus being less than one alone. The thermistors may be arranged in parallel or across input and output circuits of an amplifier. Alternatively,' the thermistors T1, T2 may be connected, as shown, in the negative feed-back path of successive stages of an amplifier. This has the additional advantage that the feed-back voltage from the second stage appears across the output of the first stage and modifies its feedback characteristic.
Patent GB-1395061-A (GB)
Title: Line spacing mechanism for a printer
IPC: B41J11/42
Filed: 1972-05-22
Abstract: 1395061 Selective printing KUROSAWA TELE-COMMUNICATIONS Ltd 22 May 1972 23939/72 Heading B6F Line spacing is controlled by an endless tape 47 with control perforations 49 sensed photoelectrically The tape 47 is driven by a sprocket 46 which is connected via gears 44, 40, 11 and 12 and a clutch 42 to the shaft 13a of platen 13. The drive is from the motor (3, Fig. 2) of the selective printer (Fig. 1) which also drives the type selection mechanism of a type wheel. The drive is transmitted via a belt 4 to the input side 6a of a clutch. A rotary clutch magnet (7, Figs. 5 and 6) controls the sliding motion of the output side 6c of the clutch along the shaft 10. A pin 9a mounted on the free end of a lever (8) fixed to the magnet shaft (7a) engages a groove formed between the output side 6c of the clutch and the gear 11, to cause this sliding motion. Manual adjustment of the platen 13 is achieved by pressing knob 18 axially inward to disengage clutch 42 against the bias of spring 43. Rotation of knob 18 whilst clutch 42 is disengaged causes rotation of the platen 13 which is disconnected from the gear train 12, 11, 40, 44 and clutch 6b.
Patent GB-657326-A (GB)
Title: Improvements in or relating to cranes for motor trucks and like vehicles
IPC: B60P1/54
Filed: 1948-09-13
Abstract: 657,326. Jib cranes; loading and unloading vehicles. PETERSON, S. E. Sept. 13, 1948, No. 24032. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 21, 1949.] [Class 78 (iv)] A crane for a vehicle consists of a mast and a pivoted jib built-up of telescopic members 1, 2 and 5, 6, respectively, the jib being suspended from a beam 16 on the mast by a chain 8 which divides into two parts at 8a, which are connected to the ends of the beam. The members 1, 2 and 5, 6 are locked in the desired relative position by pins 3, 7, respectively. The hoisting wire 9 is connected to a drum 11 driven through a gear-box 10.
Patent GB-718607-A (GB)
Title: Improvements in or relating to installations for heating buildings
IPC: F24H3/06
Filed: 1951-10-15
Abstract: 718,607. Ventilation. FOWLER, L. J., and WEATHERFOIL HEATING SYSTEMS, Ltd. Oct. 15, 1952 [Oct. 15, 1951], No. 24042/51. Class 137. [Also in Groups XIII and XXI] In a heating installation for a building, an antechamber 15 having openings 21, 23 between its lower and upper parts and a room or rooms 11 to be heated contains an oil-fired stove 16 with a flue 20 to carry away combustion products so that they do not enter the antechamber, and a fan 22 to circulate air between the antechamber and the room or rooms. In the form shown, the stove 16 is surrounded by an open-ended metal cylinder 24 which extends through a horizontal partition 25. The stove has an oil burner supplied through a thermostatically or manually controlled valve 28 from a fuel tank 18 in a separate store room. The outlet opening 23 has a hinged steel flap 35 normally propped open by a strut 36 which includes a fusible link, so that the flap will close if there is a fire. The part of the antechamber containing the stove may be shut off by a door which has a sheet metal lining and an air space between the door and the lining. If one stove heats two or more rooms, the antechamber may have a single air inlet from one room only and a separate air outlet to each'room to be heated. Specification 681,651 is referred to.
Patent GB-1224943-A (GB)
Title: Novel derivatives of zearalane, zearalenone and zearalenol and processes for their preparation
IPC: A23K1/16
Filed: 1969-05-12
Abstract: 1,224,943. Zearalane derivatives. COMMERCIAL SOLVENTS CORP., and MERCK & CO. Inc. 12 May, 1969 [15 May, 1968], No. 24122/69. Heading C2C. Zearalane derivatives of the general formula (in which T is -CH=CH- or -CH 2 .CH 2 -, Z is > CH 2 , > C: O or > CHOR; R is hydrogen, a substituted or unsubstituted alkyl group of from 1 to 15 carbon atoms, an acyl group of from 1 to 25 carbon atoms or a monocyclic aralkyl group containing up to 10 carbon atoms; X and X<SP>1</SP> are hydrogen, -OR, or -OR<SP>1</SP>; R<SP>1</SP> is benzoxazolyl, benzthiazolyl or phenyltetrazolyl; each Y is independently hydrogen, amino, nitro, or hydroxyl; with the proviso that at least one of X and X<SP>1</SP> is benzoxazolyloxy, benzthiazolyloxy or hydrogen, and provided that X and X<SP>1</SP> are not both hydrogen when Y is hydrogen, Z is -CH 2 - and T is -CH 2 .CH 2 -) may be prepared by selectively etherifying at least one of the 2- and 4-etherifying at least one of the 2- and 4-positions (OR's) of compounds of general formula (R, T, Y and Z are as above defined) with 2- chlorobenzothiazole, 2 - chlorobenzoxazole, or 1 - phenyl - 5 - chlorotetrazole, and if desired hydrogenolysing the heterocyclic ether group to replace it by a hydrogen atom. The novel compounds exhibit estrogenic activity or aid the growth rate in meat producing animals. They can be administered orally or parenterally, e.g. in an injection medium such as peanut oil, or in animal feed compositions comprising carbohydrates, proteins, minerals and vitamins. Intermediate compounds of the first formula above in which X<SP>1</SP> is tetrahydropyranyloxy are prepared by use of dihydropyran as the etherifying agent.
Patent GB-715830-A (GB)
Title: Improved sectional warping-machine having a vertically-adjusted guide reed
IPC: D02H3/00
Filed: 1951-10-16
Abstract: 715,830. Warping machines. MASCHINENFABRIK BENNINGER AKT.-GES. Oct. 16, 1951 [March 1, 1951], No. 24141/51. Class 142(1) During the winding of each conical section on a warp drum, a reed 11 is raised and lowered as it reciprocates along the drum, the raising and lowering being controlled by the reciprocation. The reed is mounted on an arm 9 pivoted at 8 to a slide 4 which reciprocates along a frame 3. The slide is reciprocated by a spindle 5 which meshes with a worm wheel 6. A sprocket 16 on the slide engages a chain 17 fixed to the frame 3 and rotates a ratchet mechanism 18 when the slide moves in one direction. The mechanism 18 turns a worm 24 meshing with a wheel 29 and turns a shaft 14. A guide arm 13, having a guide track 13a, and mounted on the shaft 14, is thereby oscillated and a stirrup 12 secured in an adjusted position on the arm 9 and having a roller thereon engaging the track 13a, is, in turn, moved to raise or lower the reed. When the reed reaches one end of its vertical movement, a lever. 25 engages a stop 31 and the ratchet mechanism 18 is disengaged. A ratchet mechanism 19 moves the reed in the opposite direction when the slide travels in the reverse direction and is subsequently disengaged by the lever 25 engaging a second stop.
Patent GB-226621-A (GB)
Title: Improvements in head lights for vehicles
IPC: F21V7/04
Filed: 1923-09-28
Abstract: 226,621. Strange, A. L. Sept. 28, 1923. Vehicle lamps. - In a vehicle lamp of the type described in Specification 13791/15, in which the reflector is formed of upper and lower half paraboloids A, B having a common axis E G, the focus b of the lower half paraboloid being in front of the focus a of the upper half paraboloid, the source of light consists of a horizontal transverse filament arranged above the common axis and between the transverse vertical planes through the two foci, and preferably below a straight line joining the lowest point B<1> on the front edge of the lower half paraboloid and its focus, and preferably below a straight line joining the highest point A<1> of the front edge of the upper half paraboloid and its focus.
Patent GB-190230-A (GB)
Title: Improvements in fasteners for detachably fastening loose sheets
IPC: B42F1/08
Filed: 1921-09-13
Abstract: 190,230. Steinmetz, G. Sept. 13, 1921. Clips, spring-wire; clips and clamps, sliding-jaw.- A device for fastening loose sheets together along a folded edge in a readily detachable manner comprises members, between which the fold in the bundle of sheets is inserted, connected together by one or more portions against which the outside of the fold is adapted to bear, and one or more parts adapted to be inserted into the fold and bear against the inside crease thereof, said part or parts being connected to one of the members between which the fold is inserted so as to be capable of movement substantially in the plane of, and in a direction transverse to, the longitudinal direction of the fastener, so that the fastener can be adjusted to suit the thickness of the bundle of sheets. Figs. 1 and 2 show a spring-wire device comprising members 1, 2, between which the fold in the bundle of sheets is inserted, connected by portions 3 adapted to bear against the back of the fold, and parts 4 adapted to be inserted in the fold and bear against the inside crease thereof, the parts 4 being connected to the members 2 by members 5. The parts 4 may be extended to form loops 8, which are adapted to be passed round the fold and bear against the back thereof. In a modification, Fig. 4, the device comprises two strips 9, 10, having a cross-section approximating to that of a V of small angle with a rounded apex, the fold of the bunch of sheets being inserted between the arms 12, 13 of the strip 10, the arm 14 of the strip 9 being the part which is inserted in the fold to bear against the inside crease thereof, the other arm of the strip 9 being slidable on the arm 13 of the strip 10 and adapted to be clamped thereto by a wing nut 11 so as to adjust the fastener to suit the thickness of the bundle of sheets.