baber/WOPTO huggingface dataset:
Patent GB-1496947-A (GB)
Title: Electronic antiskid braking control unit
IPC: B60T8/1761
Filed: 1975-07-08
Abstract: 1496947 Electronic antiskid braking control unit SOC ANON DBA 8 July 1975 [1 Aug 1974] 28698/75 Heading F2F An electronic antiskid braking control unit 10 operable to supply a relief signal to a brake applying means (M) to relieve braking pressure at a wheel (R) comprises a speed signal generator 12 to supply a voltage signal V1 representing the speed of the wheel (R), a speed reference signal generator 14 for supplying a wheel speed reference voltage signal V2 derived from voltage signal V1, a generator 16 for supplying a further voltage signal and a switching unit 18 to receive and select the signals for supply to a relief signal generator 20 whose output signal is the relief signal; the further voltage signal from generator 16 comprises first, second and third phases (t 1 -t 3 , t 3 -T, T-t 2 ) as illustrated in Fig. 3. Initially signal V1 is greater than signal V2, and the output signal of a comparator 60 of the switching unit 18 is at a "low" level as is the output signal of a comparator 110 of generator 20 with a transistor 80 and transistors 70, 100 on. At an instant t 0  when V1 falls below V2 comparators 60, 110 react so that comparator 110 supplies the relief signal. A transistor 104 previously conductive turns off and a capacitor 40 of signal generator 16 effectively acts to store the value of voltage V2 at the instant t 0 . If signal V1 again exceeds signal V2 at instant t 1 , the output signal from comparator 60 returns to a "low" level, transistor 100 is turned off and input terminal 112 of comparator 110 is supplied with the signal from generator 16. The generator 16 in fact tends to generate an exponential signal V3 termed the base signal but actually delivers the signal in three phases. During a first phase (t 1 -t 3 ) the signal corresponds with signal V3. During a second phase (t 3 -T) the signal is parallel to the wheel speed voltage signal but for each instant value of the signal from generator 16 it tends to resume an exponential trend identical to base signal V3 but prevented from doing so by a diode 52. During a third phase (T-t 2 ) the signal is parallel to and delayed with respect to signal V3 by a value dT.
Patent GB-776755-A (GB)
Title: Electrical filter network
Inventor: DAVIDSON IAN ARTHUR
IPC: H03H7/48
Filed: 1954-10-06
Abstract: 776,755. Filter networks. BELLING & LEE, Ltd. Dec. 8, 1955 [Oct. 6, 1954], No. 28747/54. Class 40 (8). [Also in Group XL (c)] A network for coupling two transmission lines carrying signals of different frequencies to a common transmission line consists of two sections, either of which is a " T " or " # " network, having a common series or shunt limb, each section having either an open circuiting element in a series limb thereof or a short-circuiting element in a shunt limb. In one embodiment the higher frequency signal passes to the common transmission line via connections C, D and a " T " network comprising series capacitors C4, C5 and a shunt (which is inductive at the higher frequency) formed by a capacitor C2 in series with an inductance L2. The lower frequency signal is fed to the common line via connections A, B and a " # " network comprising a condenser C3, an inductance L1 in parallel with a condenser C1 to form a combination which is inductive at the lower frequency and an open circuit at the higher frequency, and the condenser C4 which is connected to the point D through the combination C2, L2 which is a short circuit at the lower frequency. In further embodiments the coupling network comprises, respectively, (a) a lower frequency " T " network and a higher frequency " # " network; (b) two " T " networks; (c) two " # " networks having a common series capacitor-inductance combination; and (d) two " # " networks having two common series capacitor-inductance combinations. The network may be used for the passage of signals from television or radio aerials operating at different frequencies to a common receiver, or it may be used to separate two signals of different frequencies.
Patent GB-834077-A (GB)
Title: A lathe attachment for performing two sequential operations on a workpiece
IPC: B23B29/04
Filed: 1957-09-12
Abstract: 834,077. Lathe-attachments. WICKMAN Ltd., and WILSON, D. H. Sept. 3, 1958 [Sept. 12, 1957], No. 28748/57. Class 83 (3). A lathe-attachment for performing two sequential operations on a workpiece g, comprises a rotary circular-tool e, Fig. 4, rotated by contact with the work, and a second non- rotary-tool i, both tools being mounted on a base a, Fig. 3, which is attached to a lathe cross-slide b. In operation, the tool e is brought into contact with the work and rotated thereby to impress an inscription thereon, until a gap h is adjacent to the work and a plunger K, bearing on the periphery of tool e, enters a notch n. During this rotation, a spring r attached to the base a and the tool e is tensioned. The slide b is then moved to the right and the tool i parts off the workpiece. The slide is then withdrawn until a fixed-stop q actuates a lever o and withdraws the plunger k from the notch n and the tool e is rotated to its initial position by the spring r.
Patent GB-387292-A (GB)
Title: Improvements in or relating to opaque illuminators for microscopes
IPC: G02B21/00
Filed: 1932-10-15
Abstract: 387,292. Microscopes. LEITZ GES., E., Optical Works, Wetzlar, Germany. Oct. 15, 1932, No. 28800. Convention date, Jan. 29. [Class 97 (i).] In an opaque illuminator, particularly for use in investigating doublyrefracting media in polarized light, the reflecting element of the illuminator is so arranged as to provide two consecutive reflections at such angles as substantially to eliminate the errors due to elliptical changes in the condition of polarization of the incident light. In the form shown the reflecting element E has one surface E<2> providing total reflection and a second surface E<3> which is metallically coated so as to provide mirror reflection. The entrance and exit faces E<1>, E<4> of the element E are at right-angles respectively to the incident ray F and the emergent ray F<1>. In another form each reflecting face of the element E is polished so as to provide simple reflection. In this form there is preferably provided in front of the face E<1> a parallel plate at such an angle that the refractions of the light at the two surfaces of the plate take place under large angles of incidence.
Patent GB-922451-A (GB)
Title: Corrosion inhibitor
Inventor: RIGGS OLEN LONNIE
IPC: C23F11/12
Filed: 1961-08-09
Abstract: Hydrocarbon oils, e.g. gasoline, have added thereto to inhibit corrosion a mixture of an acid of formula <FORM:0922451/III/1> wherein n varies from 10 to 42 and x varies from 6 to 10, and a quaternary ammonium compound of formula <FORM:0922451/III/2> wherein R1R2 represents an alkyl-substituted aryl group, R1 being an alkyl group of 6 to 15 carbon atoms, and R2 being an aryl group, and R3 is an alkyl group of 1 to 4 carbon atoms, and Y is a halogen atom.  The acids are dimers of di- and tri-enoic acids, the dimers of sorbic, palmitolic, linoleic, humoceric, eicosinic, eleostearic, and octadecadienoic acids being mentioned.  Many quaternary ammonium compounds are specified in which R1R2 is dodecylbenzyl, heptylbenzyl, octylnaphthyl, octylbenzyl, nonylbenzyl, nonylnaphthyl, or tridecylbenzyl, R3 is methyl, ethyl, propyl or butyl, and Y is chlorine or bromine.
Patent GB-985616-A (GB)
Title: Polyoxymethylene esters
IPC: C08G2/32
Filed: 1963-07-22
Abstract: Esterified highly crystalline polyoxymethylenes are cooled from esterification temperature to crystallization temperature by mixing with a cooler liquid.  The cooler liquid may contain aliphatic, cycloaliphatic, or axomatic hydrocarbons, ethers, esters or ketones. The process may take place continuously and acetic anhydride may have been the esterification agent. Apparatus for carrying out the process is described.
Patent GB-1060673-A (GB)
Title: Improvements in the production of tyres having endless treads
Inventor: LADEMAN MANFRED
IPC: B29D30/58
Filed: 1964-07-14
Abstract: 1,060,673. Moulding and applying treads to tyres. REIFENWERK FURSTENWALDE VEB. July 14, 1964, No. 28955/64. Heading B5A. A tyre-tread is made by forcing heated plastic material, e.g. by using an injection moulding machine, into a space 3 defined by annular mould halves 1a, 1b and a ring 2, and is subsequently bonded to a tyre carcass (5), Fig. 2 (not shown), either to make a new tyre or in a retreading operation, by removing ring 2, closing mould halves (7a), (7b), applying pressure internally of the carcass, e.g. by steam, compressed air or water pressure, and heating the whole mould (1a), (1b (7a), (7b), see Fig. 3 (not reproduced). Reinforcement 4, Fig. 1, e.g. cording of steel or textile, may be incorporated by overlaying ring 2 before moulding the tread. Mould halves 1a, 1b (7a), (7b) may be formed from a plurality of radially movable arcuate sections.
Patent GB-967161-A (GB)
Title: Loom
IPC: D03D47/00
Filed: 1963-07-22
Abstract: 967, 161. Weft measuring devices. MACHINEFABRIEK L. TE STRAKE N. V. July 22, 1963 [Aug. 24, 1962], No. 28967/63. Heading D1E. To prevent slack weft between the supplying rolls 4 and the suction tube weft storer 5 the weft 2 is blown into the tube 5 by a nozzle 10. Specifications 915,521 and 960,453 are referred to.
Patent GB-519614-A (GB)
Title: Improvements in and relating to machine tools particularly gear generating machines
IPC: B23F5/16
Filed: 1938-06-28
Abstract: 519,614. Gear-cutting. MILLER, E. W., and FELLOWS GEAR SHAPER CO. June 28, 1938, No. 28984/39. Divided out of 516,480. Drawings to Specification. [Class 83 (iii)] A machine tool such as a gear generator of pinion-cutter type has a reciprocating spindle mounted on a saddle carrying a stop member which coacts with an abutment, the abutment being arranged so that it may be reversed in situ to adapt the machine for cutting either internal or external gears. The machine embodiment is the same as that described in Figs. 1-3 and 6-10 of Specification 516,480 which is referred to. Specification 432,475 also is referred to.
Patent GB-1047585-A (GB)
Title: Hearing aids
IPC: H04R25/02
Filed: 1963-07-23
Abstract: 1,047,585. Spectacle frame with hearing aid. DANAVOX A. S. July 23, 1963 [Sept. 20, 1962], No. 29020/63. Heading G2J. [Also in Division H4] The side piece of a spectacle frame comprises an upper wall 6 and two side walls 7, 8 which together define a cavity. The cavity is closed by a metal cover on which are mounted a microphone 19, a coil 20 for inductive coupling with a telephone receiver, components 22, a switch having "off", "microphone" and "coil" positions, a volume control 24, a battery holder 25, a tone control, and a sound emitter 27 and outlet duct 28. A portion 1 of the frame may be inverted for use as a left hand or right hand end piece. A cover carrying components may be provided on one or both sides of the spectacle frame. The side pieces may be of the plug-in type. A rear portion of the side piece may be heated and then bent for adjustment purposes. Alternatively, a hearing aid (Fig. 5 not shown) for use behind the ear, and comprising a cover 34 carrying electrical components and a housing 33, may be mounted at the rear of a spectacle side bar. In this event the side bar carries a downwardly projecting sound tube.
Patent GB-299306-A (GB)
Title: Process for the electrolytic production of protective coatings of peroxide of lead on electrical conductors
IPC: C25D9/06
Filed: 1928-10-10
Abstract: 299,306. Siemens & Halske Akt.- Ges. Oct. 22, 1927, [Convention date]. Lead peroxide, obtaining.-A protective coating of lead peroxide is deposited on an electric conductor connected as anode from an alkaline solution of a lead salt to which is added an organic compound of one of the following classes viz. (1) compounds containing oxygen only in a hydroxyl, carbonyl or hydroxyl and carbonyl grouping e.g. phenol, resorcin, hydroquinone, pyrogallol, phloro, glucine, glycerine, sugar or fluorescein (2) those containing oxygen in a carboxyl grouping only e.g. acetic acid or succinic acid (3) cyanides, thiocyanates and oximes e.g. dimethylglyoxime. In an example 700 gms. of glycerine are dissolved in 10 litres of water and 50 gms. of caustic soda added. When this is dissolved 1000 gms. of yellow oxide of lead are added gradually. The oxide may be previously mixed with water. Solution is accelerated by heating. A circuit density of 1 amp per sq. dcm. is employed. According to the Specification as open to inspection under Sect. 91 (3) (a) tannin and alizarine-bordeaux may be used as additions. This subject-matter does not appear in the Specification as accepted.
Patent GB-184406-A (GB)
Title: Improved device for pouring liquids from cans or other vessels
IPC: B65D47/06
Filed: 1921-11-02
Abstract: 184,406. Edwards, J. H. Nov. 2, 1921. Spouts; filters.-A pouring-spout for petrol tins &c. comprises a tube a, Fig. 1, provided at one end with a screw-threaded collar b or equivalent means, with which may be associated a washer, for securing it to a tin, and at the other end with a valve d normally held closed by a spring e but adapted to be opened when the spout is inserted into the filling opening of a tank &c. by the cranked stem d<1> contacting with the wall of the filling opening and so causing the valve to open. The valve illustrated comprises a pair of oval plates separated by felt or like packing- material d<2>. The spout embodies a conical filter g, Fig. 2, formed with a flattened tubular venting-orifice g<2> which serves to admit air to the tin being emptied but prevents the passage of liquid. Pouring ceases when the level of liquid in the tank covers the valve d, and upon withdrawing the tin the valve closes automatically. Stops f<1> limit the extent to which the tube can be inserted into the filling-opening of a tank &c. and may also serve for the manipulation of the device.
Patent GB-652515-A (GB)
Title: Improved arrangement for the control of a variable-speed mechanism
IPC: F16H63/46
Filed: 1948-11-10
Abstract: 652,515. Operating change-speed gearing. SOC. ANON. DES ATELIERS DE CONSTRUCTION DE JAMBES NAMUR, ANCIENS ETABLISSEMENTS THEOPHILE FINET. Nov. 10, 1948, No. 29248. Convention date, Aug. 12. [Class 80(ii)] Control mechanism for a changespeed gear comprises selector forks 25, 37, Figs. 3, 4 moved by pins thereon engaging cam grooves in a plate 41 normally held against rotation by a catch 45 which co-operates with notches 44, 44<SP>1</SP>, 44<SP>11</SP>, 44<SP>111</SP> and 44<SP>1111</SP> corresponding to first, neutral, second, third and fourth gears respectively but which is released by a cable 106 when the main clutch is disengaged. A shaft 47 carrying a preselector control lever 46 has secured thereto a pair of discs 56, 80, Figs. 3, 9, 10, between which are arranged a pair of oppositely - wound initially - stressed spiral springs 57, 78, the inner ends of which are secured to the discs while their outer ends are secured to a pair of arms 60, 69 which cooperate with abutments 61, 86 on the discs and which are loose on, but co-operate with abutments 77, 74 on a shaft 64 connected to the plate 41. Thus, as the lever 46 is moved from one gear position to another, one of the two springs is further stressed while the tension of the other spring remains unchanged, the further stressed spring acting to move the cam plate 41 to a position corresponding with the new position of the lever 46 immediately the catch 45 is released upon disengagement of the main clutch. A second abutment 62 on the disc 56 prevents the lever 46 from being moved through two stages in changing up, while not preventing such movement in changing down. Alternatively, the discs 56, 80 may be secured to the shaft box, the arms 60, 69 then co-operating with abutments on the shaft 47. The output member of the gear is a sleeve loose on the input shaft 11 and carrying a sprocket wheel. The main clutch is disengaged by a rod extending through the shaft 11 and operated through a thrust bearing by a rod 13 actuated by a fork 104 which is turned by an arm 102 operated by a cable 100. The cable 106 controlling the catch 45 is connected to an arm 105 of the fork 104.
Patent GB-1107133-A (GB)
Title: Improvements in or relating to breathing mask installations
Inventor: TREMAIN JOHN KEITH
IPC: A62B7/14
Filed: 1965-07-09
Abstract: 1,107,133. Stowage of breathing masks. WESTLAND AIRCRAFT Ltd. 5 July, 1966 [9 July, 1965], No. 29329/65. Heading AST. An emergency breathing mask stowage means comprises a stowage chamber and a breathing mask integral with or secured to the cover or lid of the stowage chamber, said cover or lid being separable from the stowage chamber. As illustrated with reference to Figure 1, the breathing mask 6 is attached to the closure member 9 of a stowage chamber 1 in a flight vehicle. Means may be provided for causing the flow of oxygen to the mask to be manually or automatically controlled dependent on therapeutic or emergency use.
Patent GB-960867-A (GB)
Title: Improvements in or relating to guide means for doors
Inventor: WHITE MAURICE WILLIAM
IPC: E05B65/32
Filed: 1959-08-29
Abstract: 960,867. Releasable fastenings; door stops; preventing sagging of doors. WILMOTBREEDEN Ltd. Aug. 29, 1960 [Aug. 29, 1959], No. 29344/60. Divided out of 960,866. Headings E1J, E2A and E2X. Guide means for a door comprises a guide roller 8 with an outer rolling surface which is a surface of revolution, a guide member 1 with which the roller engages during door closure to lift the door if the latter has dropped, a spring-loaded wedge 12 which provides vertical restraint for the door when fastened, and a wedging surface 16 against which the guide member is wedged so that the roller is not subject to the wedging load. The guide roller 8 is cylindrical as shown and is made of nylon. It is mounted on a pivot pin 9 fixed between a shroud 4 and a back plate 3 of a latch mechanism. The guide member 1 is the striker for the latch mechanism and the roller engages its upper edge if the door has dropped. An auxiliary guide pin 10 is also provided between the back plate 3 and the shroud 4 and this engages the striker if the door is too high and lowers it. The wedge 12 is slidable and engages the lower edge of the striker to provide the vertical restraint and to prevent rattle of the door when fastened. The striker is U-shaped and in the event of a collision which tends to distort the body and allow the door to burst open the free limb 6 of the striker engages the inside of the shroud 4 to prevent the door opening.
Patent GB-730411-A (GB)
Title: Improvements in or relating to wide-angle optical objectives
IPC: G02B13/04
Filed: 1952-11-20
Abstract: 730,411. Optical objectives. COOK, G. H., and TAYLOR, TAYLOR & HOBSON, Ltd. Nov. 16, 1953 [Nov. 20, 1952], No. 29347/52. Class 97 (1). A corrected wide-angle objective comprises four components of which the outer two are each of strongly meniscus form with their surfaces concave to the diaphragm, whilst the inner two are each compound with a dispersive internal contact surface concave towards the diaphragm, the arithmetic mean of the focal lengths of the outer components lying between F and 4F, whilst that of the inner components lies between 2F and 12F, where F is the equivalent focal length of the whole objective. Preferably the arithmetic mean of the focal lengths of the outer components lies between 1.5F and 3F, and that of the inner components between 3F and 9F. Numerical data are given for one example of the objective shown.
Patent GB-1163046-A (GB)
Title: Fluid System for Independent Operation of Two Fluid Motors.
IPC: G05D11/02
Filed: 1967-06-26
Abstract: 1,163,046. Controlling hydrostatic transmission. JAEGER MACHINE CO. 26 June, 1967 [24 Aug., 1966], No. 29357/67. Heading F2D. In an hydraulic transmission in which an engine-driven variable-displacement pump 16 supplies pressure fluid to two independently controlled fixed-displacement motors 11, 14, driving, for example, the mixer drum D and a centrifugal pump 10 supplying water thereto, respectively, on a mobile cement mixer, the displacement of the pump being controlled by a piston 17 spring-biased to a maximum flow position and operated by a fluid pressure differential sensed across a manually adjustable restrictor 30 in the return line of the motor 11, a further manual forward/reverse and by-pass valve 29 controlling the motor 11, the control 35 for the motor 14 includes a sequence valve 36 which normally allows flow to line 31 but is responsive to fluid flow requirements of motor 14 to restrict or prevent flow to the motor 11 when the combined flow through motors 11 and 14 exceeds the output of the pump 16. With motor 11 operating, if a valve 40 is opened to initiate operation of motor 14, the valve 36 tends to close causing the motor 11 to slow down or stop until the pump output is increased sufficiently to bring the motor 14 up to its operating speed, when the valve 36 again opens. As shown, the control 35 for the motor 14 also includes a manually operated, shut-off valve 40, e.g. of the needle valve type, which effects the selective operation of the motor 14, a flow control valve 39 being preset to limit the maximum speed of the motor 14, e.g. to limit fluid flow through the motor to a maximum of seven gallons/minute. Again, Fig. 2 (not shown), the shut-off valve 40 is replaced by a second sequence valve (43) and an electric solenoid-operated, shut-off valve (44) included in the control line (46) of the valve (43), which line also communicates with the motor 14 return line (20a). The line (46) is also connected to the input port of the sequence valve (43) through a restrictor (47) so that, with the shut-off valve (44) closed, pressure builds up in line (46) to close valve (43) and prevent operation of motor 14 and, on opening valve (44), control pressure (46) falls allowing valve (43) to open and motor 14 to operate.