baber/WOPTO huggingface dataset:
Patent GB-148835-A (GB)
Title: Improvements in or relating to electric flash lights and the like
IPC: F21V21/14
Filed: 1920-07-10
Abstract: 148,835. Diamond Electric Specialties Corporation, (Assignees of Rosenfeld, F. M.). May 2, 1918, [Convention date]. Supporting. - An electric torch or other battery lamp is provided with a spring hook 7 which is pivoted at 6 to the lamp casing to allow the torch to be moved in various directions while remaining fastened to a belt or pocket. The portion 8 of the hook is curved to fit the torch casing to provide sufficient friction when the torch is rotated to retain it in any position. To prevent wear when the torch is made of fibre, a metal washer may be interposed between the portion 8 of the hook and the casing, and also between the head of the pivot 6 and the interior of the casing.
Patent GB-772529-A (GB)
Title: Improvements relating to the projection of stereoscopic images by means of polarisedlight
IPC: G03B35/20
Filed: 1952-08-15
Abstract: 772,529. Stereoscopic projection apparatus. POLA-LUX GES. FUR BLENDSCHUTZ UND RAUMBILDPROJEKTION. Aug. 15, 1952 [Aug. 21, 1951; April 16, 1952], No. 20616/52. Class 97(1) Apparatus for the projection of stereoscopic images by polarized light comprises an interference polarizer, adapted to split up each of the right and left image forming light beams into a pair of light beams plane polarized at right angles to each other and emerging from said polarizer at different exit surfaces at each of which emerges one right image forming beam and one left image forming beam polarized in perpendicular planes, and to superimpose the right and left image forming beams emerging from the said polarizer at the same exit surface, quarter wave plates, positioned adjacent said exit surfaces, the optical axes of said quarter wave plates being at right angles to one another and at angles of 45 degrees to the polarization planes of said plane polarized beams and optical systems for projecting images on to a common screen by means of the circularly polarized beams thereby produced. In the form shown, diapositives 3a, 3b of a stereoscopic pair are illuminated by a lamp 1 with reflector 1a and condenser 2. The transmitted light beams 10, 11 are divided, into plane polarized components 10a, 10b, 11a, 11b, at the surface 5 in a rhomboid block, further reflections occurring at the surfaces 4, 6 as necessary. The components 10a, 10b and 11a, 11b from the respective diapositives are oppositely polarized, as are the pairs of components 10a, 11a and 10b, 11b emerging from the surfaces 12b, 12a. Quarter wave plates 7, 8 are oriented to convert the beams 10a, 10b into beams circularly polarized in one sense and 11a, 11b into beams circularly polarized in the opposite sense. Images' are projected by objectives 9a, 9b and adjustable prisms 13a, 13b, 14a, 14b permit registration on the screen. In modifications the beam splitting block is arranged to provide an angle of incidence of 55 degrees at the polarizing layer to provide more complete polarization. The block may be shaped so that neither the two exit surfaces nor the two entry surfaces are juxtaposed. It may be provided with quarter wave plates at entry and exit surfaces to provide for reversal of direction of light paths. If desired, one objective may be omitted and the projection effected by the single pair of oppositely circularly polarized beams reaching the other or, if the quarter wave plate is also omitted by a single pair of plane polarized beams.
Patent GB-1184569-A (GB)
Title: Improvements in Hydraulic Shock Absorbers.
IPC: F16F9/34
Filed: 1967-05-03
Abstract: 1,184,569. Hydraulic shock absorber. SOC. ANON. ANDRE CITROEN. 3 May, 1967 [28 Sept., 1966], No. 20648/67. Heading F2S. An hydraulic shock absorber of the type comprising a body divided into two compartments filled with a fluid, a main valve slidably mounted in said body between said compartments, a return spring for said main valve and a piston reciprocating in one of said compartments, in which the main valve body has a longitudinal blind duct formed therein and is provided with a socket which acts as a seat for a secondary valve urged against said seat by a calibrated spring, said main valve forming in conjunction with said secondary valve a permanently open annular jet by-passing the main and secondary valve openings and communicating the other of said compartments with said longitudinal duct by means of orifices formed through the lateral wall of said duct and another annular jet opening beneath the seat of said secondary valve. As described there are two similar valve mechanisms mounted in opposite relationship one, 3, controlling loss of pressure in the compression direction and the other 3a controlling the expansion direction. Under compression conditions, while the speed of the piston 22 remains below a predetermined value fluid flows from space 20 to space 2 along two paths viz. duct 18, orifices 11, jets 10, 7, and jets 7a, 10a, orifices 11a duct 18a. If the speed of piston 22 increases sufficiently the secondary valve 6 will lift against spring 5 to allow increased flow. If the speed of piston 22 becomes particularly high the main valve 3 will open.
Patent GB-1185697-A (GB)
Title: Improvements in Hydraulic Machines with Adjustable Valve Timing Adapted to Operate as Pumps or Motors
IPC: F16H39/16
Filed: 1967-05-03
Abstract: 1,185,697. Reciprocating pumps and motors. SOC. ANON. ANDRE CITROEN. May 3, 1967 [May 16, 1966], No.20649/67. Heading F1A. In an hydraulic machine operable as a pump or motor the bridges 18 and 19 of the distributing valve 13 each have a pair of ports 20, 21 and 26, 27 one of each pair of which communicate with one of the main ports 16 and 17 under the control of respective pistons 23 and 31 subject to the pressures in the main ports. The piston 31 has a pair of elbow shaped passages 34 and 35 therein so that the two bridge ports 20 or 21 or 26 or 27 communicating with the main ports each communicate with a different main port. In the described embodiment, the radial cylinder rotary block (1, Fig. 1 not shown), has pistons 4 engaging a track ring (5) mounted for pivoting movement in a casing (7). The distributing valve may have a spherical or flat valving face.
Patent GB-778947-A (GB)
Title: Process for the dehydration of dimethylphenylcarbinol
Inventor: FENOGLIO MAURICE
IPC: C07C1/24
Filed: 1954-07-16
Abstract: Alpha-methylstyrene is obtained by heating dimethylphenylcarbinol in the presence of an organic carboxylic acid which is substantially non-volatile under the reaction conditions and which has an ionisation constant of 1 x 10-4 to 1 x 10-2 measured at 25 DEG  C. The preferred acids are citric acid and phthalic acid, however, lactic acid, citric acid, tartaric acid and salicylic acid may be used.  The acids may be introduced in the solid state, in aqueous solution, or in the form of salts if sufficient mineral acid is present.  The process may be accelerated by the addition of phenol.
Patent GB-1267907-A (GB)
Title: Signal overload compensation circuit for antenna tuning system
Inventor: CHERRY JAMES RALPH
IPC: H03H2/00
Filed: 1970-04-30
Abstract: 1,267,907. Tuning radio receivers; A.G.G. in transistor circuits. MOTOROLA Inc. 30 April, 1970 [15 May, 1969], No. 20914/70. Headings H3Q and H3T. In a wave signal receiver having a voltage variable reactance 41 in series between the antenna 9 and an R.F. amplifier 12, a signal level overload compensation circuit for the voltage-variable reactance has a frequency and voltage-variable impedance 40, 60 exhibiting increased impedance with increasing frequency of signals connected in series with the voltage variable reactance 41 and a control voltage derived from the output of the R.F. amplifier is fed to the variable impedance 40, 60 to further vary its impedance. The R.F. amplifier 12 includes a hyper-abrupt varactor diode 16 as may the oscillator 26 for tuning together with the voltage variable capacitor 41 by adjustment of a potentiometer 20, which may be in the receiver or remotely located. Capacitances 48 and 49 represent the antenna and cabling capacitances and capacitor 50 may be provided to tune the radio to the A.M. band. The input circuit to the R.F. amplifier 12 includes a series tuned L-C circuit 40, 41 and when the radio is used in a car a whip antenna 9 may be used. As the A.G.C. increases the transistor 12 conducts less and this increases the input impedance of transistor 12. As a result of this an increase in R.F. voltage drop is present across the emitter-base path of transistor 12 and the R.F. voltage across the varactor 41 does not increase in proportion to the increase in antenna voltage. The R.F. voltage across the varactor 41 is limited by this A.G.C. to a value below the value at which rectification or partial rectification by the varactor would occur. Also to increase the resistance in series with the varactor 41 to compensate for high frequencies a frequency responsive circuit is included comprising a secondary winding 60 and a field effect transistor 61. FET 61 is controlled so that for low signals the FET is high impedance and for high input signals the A.G.C. causes FET 61 to reduce its impedance and due to the coupling of winding 60 to inductor 40 this increases the resistance in series with the varactor 41 to compensate for the signal overload.
Patent GB-624092-A (GB)
Title: Method of and apparatus for heating dielectric materials electronically
IPC: H05B6/60
Filed: 1946-07-12
Abstract: 624,092. Dielectric heating. RADIO CORPORATION OF AMERICA. July 12, 1946, No. 20940. Convention date, Aug. 30, 1945. [Class 39(iii)] Articles are passed along a pre-set path through an electric field whose heating effectiveness is varied at a relatively low rate between the inlet to the path and an intermediate point, and at a relatively higher rate from this point to the outlet from the path by connecting a variable inductor in parallel therewith. In an embodiment wet rayon cakes 21, Figs. 1 and 2, are advanced through electrode screens 3, 17 by a belt 23 driven by a motor 31. A fixed inductor 19, and a variable inductor formed by conductive portions 39 of copper tubing, and a bridge 41, controlled by a rod 43, are connected across and intermediate the ends of electrodes 3, 17. A capacitor, formed by screens 55 and 5 and varied to tune the circuit to resonance by raising or lowering the framework 53 by a crank 57, is connected across the outlet end of the electrodes as shown in Fig. 5. The power supply is connected by a concentric transmission line 61 to the grounded screen 3 via a strap 63 and to the variable inductor via a strap 65. E2 and E1, Fig. 6, represent the voltage distribution along the electrodes with and without the variable inductor.
Patent GB-995410-A (GB)
Title: Ironing apparatus for the mechanical ironing of insulating material on straight portions of coils and windings of electrical machines and apparatus
IPC: H02K15/12
Filed: 1964-05-21
Abstract: 995,410. Winding coils. MICAFIL A.G. May 21, 1964 [May 21, 1963], No. 20996/64. Heading B3A. [Also in Division B8]  Apparatus for ironing insulating material on coils and windings of electrical apparatus, of the sort having ironing members mounted in a rotatable drum, has means for passing heated gas through the drum in either direction. The drum 1 is substantially the same as in Specification 684,223 in which the ironing members comprise two opposed mutually offset rows 1a. Fig. 2 (not shown), of springy bands and in which the axial length of the drum is varied by adding coaxial ring segments carrying further bands. The air is heated at 14 and is passed by a fan 13 through a valve 16, reversible by a solenoid-actuated switch 23, and through drum 1. End fittings 5 of the drum clamp the coil and have openings, closable by sleeves and through which the ends of the coil protrude.
Patent GB-359010-A (GB)
Title: Improvements in or relating to separable fasteners
IPC: A44B19/06
Filed: 1930-07-11
Abstract: 359,010. Sliding-clasp fasteners. POUX, N. J., 745, North Street, Meadville, Pennsylvania, U.S.A. July 11, 1930, No. 21006. Convention date, Sept. 30, 1929. [Class 44.] The fastening members of a slider-operated fastening have a triangular projection 6, Figs. 2 and 4, or V-shaped projection 22, Fig. 8, on one face, and a correspondingly shaped recess 10 on the other face. The projections and recesses are preferably oppositely disposed as shown so that the members on both stringers are identical and interchangeable. In a modification, Figs. 9 and 10, each member has two projections 25 at its free end, with recesses 26 behind the projections. One face 8 of a projection may be parallel with the free end of the member and adjacent thereto, as in Figs. 2 and 4, or remote therefrom, as in Figs. 9 and 10. The members are bifurcated to provide jaws 5 by which they may be clamped on the edge of the stringer (not shown) in the usual way.
Patent GB-1281310-A (GB)
Title: A lawn mower
IPC: A01D34/81
Filed: 1971-04-19
Abstract: 1281310 Lawn mowers WOLF-GERATE GmbH 19 April 1971 [13 Feb 1970] 21158/71 Heading A1F A hand-propelled motor mower is made predominately of electrically insulating plastics and comprises a bell-shaped casing 18, 20, an inner motor housing 28. and a base plate 10. As shown, the motor 34 is of mains voltage and drives cooling fan 48 and mowing blades 50. The axles 23 of the ground wheels 24 are vertically adjustable in stepped slots 22 which are resilient to allow entry of the axles. A low voltage motor may alternatively be used with the battery stored in the upper part of the casing 18. An I.C. engine may be used. The plastics parts of the mower may be assembled by adhesive or press-fits.
Patent GB-1300505-A (GB)
Title: Preparations of reaction products of epoxides, fatty amines and basic polyamides, processes for their manufacture and their use
IPC: C08L77/00
Filed: 1971-04-19
Abstract: 1300505 Polyepoxide-polyamide reaction products CIBA-GEIGY AG 19 April 1971 [6 Feb 1970 7 Jan 1971] 21168/71 Heading C3B [Also in Divisions D1-D2] Water soluble or water dispersible products are prepared by reaction, in an organic solvent at up to 95‹ C., of polyepoxides (I), fatty amines (II) and basic polyamides (III). I and II are first reacted in an epoxy/amine group equivalent ratio of 1 : 0À1 to 1 : 0À85. The epoxy group containing product is then reacted with III, which is prepared by reaction of a polymeric unsaturated fat acid (IV) and a polyalkylenepolyamine (V), in an equivalent ratio of epoxy groups of 1 : 1 to 1 : 6. Acid is added, not later than on completion of the reaction, so that the product on dilution with water has a pH of 2-8. I may be a polyglycidyl ether of bisphenol A. II may have tne formula in which x=11-23. IV may be dimerized to trimerized linoleic or linolenic acid. V may be (n= 1, 2 or 3). Reaction may take place in an organic solvent which is infinitely miscible with water, e.g. 2-butoxyethanol or isopropanol. Also present in the reaction mixture may be a monofunctional or difunctional compound different from I and III, e.g. epichlorohydrin. Uses.-Treating wool, especially to make it non-felting and for sizing paper.
Patent GB-279368-A (GB)
Title: Aircraft toy
IPC: A63H27/04
Filed: 1927-08-11
Abstract: 279,368. Bing-Werke vorm. Geb. Bing Akt.-Ges. Dec. 31, 1926, [Convention date]. Roundabouts.-In a toy in which model aircraft are carried by a beam adapted to rotate about a stationary threaded spindle, the spiral ascent of the beam is effected by spring mechanism housed within the aircraft. A model aeroplane 5 and airship 6 depend from the ends of a beam 3, which at its centre engages a spiral thread 9 on a spindle 8 and is hinged for removal therefrom. The aeroplane, is provided with a spring motor that actuates a propeller to raise the beam from the base of the spindle 8 to the top. Upon reaching the' top of the spindle, an arm 31, projecting from a longitudinal shaft 27, Fig. 4, in the beam, engages a stop 24 thereby causing a rotation of the shaft, which, through gears 28, 30 turns the aeroplane through 180‹ and allows the beam to return to the base of the spindle. The stop 24 is preferably connected to a spring which is put in tension by the engagement of the arm 31 and reacts to give the beam an impulse in the reverse direction.
Patent GB-979702-A (GB)
Title: Process and equipment for rapid oxygen determinations in metals,in particular steels
IPC: G01N33/20
Filed: 1963-05-28
Abstract: 979,702. Oxygen determination in metals. HUTTENWERK OBERHAUSEN A.G. May 28, 1963 [Aug. 21, 1962], No. 21179/63. Heading B1X. Oxygen in metals, particularly steels, is determined rapidly by placing a specimen in a recessed graphite electrode inside an extraction chamber, melting it by playing an arc on it to extract the oxygen as CO, switching off the arc immediately after extraction, transferring the extracted gas by pressure equalization to an evacuated measuring chamber filled with an inert carrier gas and determining the oxygen content as CO, e.g. using an I.R. absorptiometer. The end of the extraction is determined by observing the molten sample or by preliminary tests on known specimens; 10-30 seconds being disclosed as a suitable period for melting and extracting the sample. Equipment for this process comprises an extraction chamber with an electrode to hold a specimen and a counter electrode together with an evacuatable measuring chamber connected to analytical apparatus. Manually operated apparatus may be used or a programme controller and servomotor can be used for actuating the pumps, valves and other items automatically in timed sequence. In a specific embodiment (see the Figure), extraction chamber 1 has a rotatable plate 2 with recessed graphite electrodes 3 in which are placed specimens 4 of known weight under a current of protective gas. The chamber is evacuated briefly, e.g. for 30 seconds, by backing pump 7 through valve 6 whereafter valve 6 is closed, valves 9 and 26 opened and high vacuum pump 18 further evacuates chamber 1. The pressure in the two lines is-indicated by gauges 10 and 11. The evacuated chamber is filled with an inert gas, e.g. argon, by valve 12, to slightly above atmospheric pressure, the arc is struck, the specimen melted and the current reduced whilst extraction takes place. During this stage measuring chamber 13 having a volume three times that of chamber 1, is evacuated through valve 14 by pump 7. After extinction of the arc the CO cloud passes through valves 15 and 16 and filter 17 to chamber 13 by pressure equalization. Chamber 13 is then filled with pure argon to slightly above atmospheric pressure, valves 19, 20 and 21 is opened and the gas mixed by circulating pump 22. After mixing the pump is switched off and the CO content determined by I.R. absorptiometer 18. The measuring circuit may be purged through valves 24 and 25 with, e.g., argon, and chamber 13 evacuated by pump 7. A valve 26 provides for the introduction of calibrating gases.
Patent GB-584991-A (GB)
Title: Improvements in anti-vibration mountings
IPC: F16F1/373
Filed: 1944-10-31
Abstract: 584,991. Resilient supports. WRIGHT, H. CLAYTON-. Oct.-31, 1944, No. 21225. [Class 108 (iii)] In an anti-vibration mounting, Fig. 5, comprising an outer supporting member 1 to which a rubber ring 3 is anchored at two or more places and an inner supported member 7 anchored to the ring at places alternately spaced with the anchorages to the supporting member 1, the ring also forms a buffer stop limiting the deflection of the supported member. The member 1, Fig. 12, has diametrically-placed hook-shaped parts 4 which engage portions 5<1> of the member 3, Fig 3, to which are alternately disposed portions 10 engaging recesses 9' in the member 7, Fig. 10. The deflection downwards of the member 7 is limited by the engagement of a lug 13 extending transversely to the recesses 9', with projections 5 of the resilient member 3. The deflection upwards is limited by the engagement of sides 1<1> of the member 1 by the portions 10 of the member 3. The member 1 may form the top of a hollow mounting which has a flanged base secured to a panel.
Patent GB-429661-A (GB)
Title: Improvements in or relating to the construction of vehicle bodies
IPC: B62D31/02
Filed: 1934-07-20
Abstract: 429,661. Vehicle bodies. SHORT BROS. (ROCHESTER & BEDFORD), Ltd., and KEMP, W. P., Seaplane Works, Rochester, Kent. July 20, 1934, No. 21264. [Classes 103 (iv) and 108 (i)] In vehicle bodies, particularly buses and tramcars, a rear bulkhead is provided comprising a horizontal girder forming the base of the bulkhead, upright pillars connected to the girder a transverse member connecting the upper ends of the uprights and diagonal or cross bracing members connecting at least one pair of adjacent pillars. As shown the girder comprises upper and lower booms 11, 12 interconnected by bracings 13, upright pillars 15 ... 18 connected to the girder and upper transverse members 26, 28 arranged to suit the upper deck of a double-deck vehicle. The uprights 17, 18 are interconnected by diagonal bracings 24 and the outer pairs of uprights are connected by members 23 so that the parts enclosed by the uprights 15, 16 may be formed as a window and as a "used" ticket box. The upper boom 11 is dipped at the centre as shown to support the central passage of a bus &c., while the lower boom provides a support for the entrance or conductor's space. Gusset plates 30 are provided and the bracings 113, 213 are extended to be connected to the outer uprights 15, 18. The members of the girder and uprights are of cruciform shape as described in Specification 422,642. If desired the members may be of wood interconnected by metal plates.
Patent GB-744460-A (GB)
Title: Improvements in or relating to electrical vibrators
Inventor: HODGSON KENNETH GEORGE
IPC: H02M7/62
Filed: 1952-04-01
Abstract: 744,460. Standby supply systems. STANDARD TELEPHONES & CABLES, Ltd. April 1, 1952, No. 21268/55. Divided out of 744,401. Drawings to Specification. Class 38 (4). [Also in Group XXXVII] The subject-matter is the same as contained in Specification 744,401 but the claims are for the construction of the vibrators and their priming means.
Patent GB-300975-A (GB)
Title: Improvements in and relating to speedometer driving means for vehicles
IPC: B60Q1/54
Filed: 1927-08-13
Abstract: 300,975. Wheaton, A. J., and Yule, V. C. Aug. 13, 1927. No Patent granted (Sealing fee not paid). Speed-indicator transmission mechanism.-A means for driving a speedometer comprises gear wheels enclosed within a brake drum of the vehicle. One of the gear wheels B is mounted on the hub A of a road wheel and meshes with another wheel C carried by an axle D passing through a bearing in the fixed cover plate E of the brake drum, the outer end of the axle being connected to the flexible cable of the speed indicator. Reference has been directed by the Comptroller to Specification 269,318.