baber/WOPTO huggingface dataset:
Patent GB-1188187-A (GB)
Title: Improvements in or relating to Electrical Gating Circuit Arrangements
Inventor: CHAPLIN MICHAEL EDWARD
IPC: H03K17/60
Filed: 1967-06-08
Abstract: 1,188,187. Gating circuits; keying carrier frequencies. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 7 June, 1968 [8 June, 1967], No. 26521/67. Headings H3R and H3T. A transistor gating circuit, more particularly for radio-frequency signals, comprises a first differential amplifier having gating means to interrupt an energizing path therefor and a second amplifier having a transistor constant current supply circuit, the second amplifier being arranged to cancel in-phase gating components appearing at the output of the first. As shown the gating is effected by switching the constant current tail transistor Tr3 of the first amplifier circuit. In Fig. 2, not shown, a gating transistor Tr7 diverts the constant current away from the transistors of the first amplifier.
Patent GB-1422588-A (GB)
Title: Multiplier for delta coded signals
IPC: G06F7/60
Filed: 1973-06-04
Abstract: 1422588 Multiplying delta-modulated signals INTERNATIONAL BUSINESS MACHINES CORP 4 June 1973 [20 June 1972] 26538/73 Heading H3H Apparatus for forming the product Z=XY where X, Y are encoded in delta form having bit streams x, y, comprises first and second integrators In1, In2 for receiving the bit streams and switches S1-S4 connecting the outputs of the integrators to an output terminal where control means are provided for activating the switches according to the values of the deltacode bits of the first and second signals. The basis of the multiplication lies in the assumption that if the two signals are sampled at a high frequency, the delta bit derived at each sampling may be considered to represent the derivative of the signal and if x= 1, dX/dt= + 1; if x=0, dX/dt=- 1 and similarly for y. When these values are inserted in the equation dZ/dt= X(dY/dt) + Y(dX/dt), the value of dZ/dt at time t is obtained from a combination of ŒX and ŒY values at time t. As shown, the outputs from integrator In1 are +X and - X and are selectively applied to an adder via switches S1, S2 controlled by the true and inverse bits y. Similarly, the output from integrator In2 which is + and - Y is controlled by bits x to derive dZ/dt from the output of the adder. In a first modification, Fig. 2 (not shown), the provision of the adder is obviated by the implementation of a circuit which solves the equation: dZ/dt = (X + Y)(x.y - #x.#y) + (X - Y)- (x.y-y.x) which is equivalent to the above, only one of the terms on the right hand side being non-zero at any sampling instant, wherein each integator receives both input signals and the first provides the sum of X and Y in true and negative form and the second the difference of X and Y in true and negative form, the switches being controlled in response to the values of the product of corresponding bits x, y. In a second modification, Fig. 3 (not shown), the value z being the P.C.M.-delta encoded bit at time t of the signal Z is derived by implementing the equation: Z n =(X n +Y n-1 )(x n .y n -#x n .#y n ) + (X n - Y n-1 )(#x n .y n -x n .#y n ), where the suffixes mean the value of the bits and signals at the nth sampling instant and the (n - 1)th instant. The integrators in this event are counters and are responsive to delta coded bits of the first signal and of the second signal delayed by 1 sampling interval, the control means being responsive to the product of corresponding bits of the first signal and undelayed second signal.
Patent GB-1248816-A (GB)
Title: Improvements in or relating to carrying poles for stretcher-bearing
Inventor: STOLLENWERK HANS
IPC: A61G1/052
Filed: 1969-05-27
Abstract: 1,248,816. Stretcher poles. H. STOLLENWERK. 27 May, 1969 [4 June, 1968], No. 26772/69. Heading ASX. [Also in Division F2] A hollow stretcher carrying pole of reinforced synthetic plastics material such as polyester resin or polyamide reinforced with glass fibres, has a plurality of longitudinal inwardly or outwardly directed ribs 1. The ribs are hollow and disposed internally or externally for the full length of the pole. The pole is circular, triangular or rectangular in cross section and the ribs may be used as guides or attachments for stretcher canvas, stretcher feet, or sledge runners.
Patent GB-806297-A (GB)
Title: Improvements in the production of half-ethers of cycloaliphatic glycols
Filed: 1956-09-03
Abstract: The invention comprises ethers of the formula <FORM:0806297/IV (b)/1> where R is an alkyl, alkenyl, alkinyl, aralkyl, or cycloalkyl radical which may be substituted by hydroxy groups and/or alkoxy groups or halogen atoms, and a process for making them by reacting epoxy-cyclo-octane in the presence of an acid catalyst with a hydroxy compound of the formula R-OH, where R is as above. The reaction may be effected at temperatures of 10 DEG  to 100 DEG  C. in excess of the hydroxy compound and/or an inert solvent such as petroleum ether, benzene, ether, tetrahydrofurane, dioxane or carbon disulphide, and the reaction mixture then neutralized by addition of the equivalent amount of an inorganic or organic base such as sodium or potassium hydroxide or carbonate, or mono- or di-ethanolamine.  The acid catalysts are Lewis acids such as sulphuric acid, aluminium chloride, tin tetrachloride, boron trifluoride or its etherates or alcoholates. Hydroxy compounds specified are methanol, ethanol, propanol, butanol, 2-ethylhexanol, n-octanol, isopropanol, isobutanol, isoamyl, decyl, allyl, crotyl and propargyl alcohols, butinol, geraniol, phenyl ethyl alcohol, cyclopentanol, cyclohexanol, cycloheptanol, cyclo-octanol, ethylene, propylene and butylene glycols, glycerine, pentaerythritol, glycol monoethyl ethers, diglycol, ethylene chlorohydrin and glycerinealpha- or beta-chlorohydrin. Examples are given.
Patent GB-743947-A (GB)
Title: Optical scanning of record bearing member
Filed: 1953-09-30
Abstract: 743,947. Photo-electric devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Sept. 30, 1953 [Oct. 3, 1952], No. 26834/53. Class 37. [Also in Groups XIX and XL (b)] A photo-electric cell for use in a record sensing device is of a size comparable with that of the characters on the record. A light-sensitive crystal may be used and such a crystal may be formed as laminae 1.5 mm. wide, 2 mm. high and having a thickness of 0.3 mm. The light-sensitive element may be sulphides selenides and tellurides of lead, thallium and cadmium. Such an arrangement is shown in Fig. 6 where a thin semi-conductive layer 13 is applied to an insulating base 12 for example of glass or quartz, supply electrodes 14, 15 being mounted at opposite ends. A semi-conductor element consisting of for example selenium or cuprous oxide may be arranged on an electrically conducting base plate, the layer being covered by a thin electrically conducting layer. A further arrangement is shown in Fig. 7 in which a disc-shaped body 17 consists of a semi-conductor (e.g. zirconium or silicon) with a spherical indentation in which a point contact 19 is mounted. The other contact 20 is arranged on the peripheral surface of the disc.
Patent GB-236798-A (GB)
Title: Improvements in or relating to spill-makers
IPC: B31C1/00
Filed: 1924-11-11
Abstract: 236,798. Shelly, C. E. Nov. 11, 1924. Addition to 205,222. Spills. - A support 2 is provided for the spill-maker 8 described in the parent Specification to enable it to be rotated by a handle 1. The spearhead of the spill-maker may be secured by a pin in a slot in the boss of the handle or it may be slipped over and fixed to a rod protruding from the handle. A pasting device 3 may be provided for applying adhesive to the end of a paper strip, and an adjustable pointer 5 acts as a guide for the angle at which a given length of paper should be applied for winding spills of different length.
Patent GB-324086-A (GB)
Title: Improvements in and relating to pawl and ratchet mechanisms
IPC: B60T7/12
Filed: 1928-09-19
Abstract: 324,086. Wilson, G. Sept. 19, 1928. No Patenb granted (Sealing fee not paid). Locking vehicle wheels by positive detents.-Spragging devices for motor vehicles, of the kind described in Specification 290,320, are arranged for use with a four speed gear box, being controlled by a pair of superposed cam plates with slots so arranged that either plate may be stationary whilst the other is moving with the gear control lever. The spragging action is effected by pivoted detents adapted to engage a. ratchet wheel on the tail shaft of the vehicle, such engagement being controlled by the cam plates and being effective in neutral or neutral and first gear positions of the control lever. In the arrangement shown in Figs. 1 and 3, the detents 9 are mounted in a rotatable carrier 3 with an arm 3<a> engaging one of the cam plates 13 whilst a concentric mask or shield 4 apertured as at 4a for the passage of the pawls is connected through a lever 14 both to the plate 13 and to a second cam plate 16. Engagement of the ratchet wheel 6 by the pawls is controlled by relative rotation of the pawl carrier 3 and mask 4. The cam plate 13 is elastically connected to the gear control lever for first and second forward speeds and reverse, the cam plate 16 coming into operation for third and fourth speeds. The arm 3<a> on the pawl carrier engages a slot 12 in the plate 13 whilst the lever 14, operating the mask, engages slots 15, 17 in both cam plates, these slots being provided with transverse portions 15a enabling either plate to be operative whilst the other is stationary. Fig. 1 shows the arrangement with the gears in neutral, the spragging device, Fig. 3, being in operation and remaining in operation when the plate 13 moves with the control lever to first speed position. On movement through second neutral to reverse, the arm 3<a> is rocked as it enters the raised end 12b of the slot 12 thereby disengaging the pawls, the lever 14 remaining stationary in the straight part of the slot 17. On passage from first, through neutral, to second forward speed, the arm 3a remains stationary whilst the lever 14 is rocked by the raised end of the slot 17. For third and fourth speeds, the plate 16 moves with the control lever, rocking the lever 14 whilst the plate 13 remains stationary. In a modification, the pawls are mounted on a fixed carrier and are provided with tail pieces engaged by a. rotary cam member to effect disengagement, the cam member being rocked in the requisite manner by a single lever engaging slots in a pair of superposed cam plates 36, 37, Fig. 6, functioning in a similar manner to the arrangement already described.
Patent GB-675347-A (GB)
Title: Timer particularly for automatically defrosting electric refrigerators
Inventor: MORRISON DAVID
IPC: F25D21/00
Filed: 1950-11-03
Abstract: 675,347. Time switches. PARAGON ELECTRIC CO. Nov. 3, 1950. No. 26903/50. Class 38 (v). A time switch, specially suitable for periodically opening the circuit to a refrigerator motor for defrosting purposes for a predetermined time every 24 hours say, comprises a motor driving a shaft carrying two adjustable cams 31, 32 which respectively engage the ends 28, 29 of two strips carrying contacts 30 normally in engagement with each other. The cams 31, 32 are identical in shape but are relatively displaceable by means of a finger piece 46 which rotates a sleeve carrying the cam 31, the finger piece 46 moving in a slot 50 in an adjusting knob 48 formed with a pointer 21, and the knob 48 being fixed to the shaft. The motor drives the shaft through a one-way clutch allowing the shaft to be adjustably rotated by hand in a clockwise direction by the knob 48 for setting purposes. In operation, the wide part of the cam 32 moves the strip 29 to the left and the strip 28 is carried along with it, the contacts remaining closed. Later the wide part of the cam 31 comes up behind the strip 28 so that when, still later, the nose of the cam 32 releases the strip 29 this moves to open the contacts which remain open till, later on, the nose 36 of cam 31 releases the strip 28.
Patent GB-184403-A (GB)
Title: Improvements in gas masks
IPC: A62B18/08
Filed: 1921-10-12
Abstract: 184,403. Kops, W. Oct. 12, 1921. Respirators. - In the insertion of eyepieces into gas-masks of the fabric type, a hole 16 is cut in the fabric of considerably smaller perimeter than the flange 12 of the eyepiece 10. On forcing the eyepiece flange into position it is constrained by the bulging of the fabric to stand in raised relationship to the body of the mask. The preferred shape of the hole is an oval, as shown in Fig. 2, in which view the eyepiece is shown just before it is forced into position.
Patent GB-173297-A (GB)
Title: Improvements in furnaces for burning ceramic and refractory products
IPC: F27B9/22
Filed: 1920-09-22
Abstract: 173,297. Loy, G. Sept. 22, 1920. Tunnel kilns; charging and discharging.-In a kiln for burning ceramic articles, the articles are carried on a bed of burnt refractory materials 3 which is advanced intermittently by a pusher 1. The roof of the preheating zone M rises to the burning zone N, and air, admitted to the cooling zone P through openings 7, assists the combustion of the fuel gases supplied through openings 5 in the burning zone.
Patent GB-1011860-A (GB)
Title: Improvements in or relating to methods of treating hot glass containers and supportstherefor
IPC: C03B35/06
Filed: 1962-07-13
Abstract: <PICT:1011860/C1/1> <PICT:1011860/C1/2> <PICT:1011860/C1/3> A support for hot glass containers (e.g. bottles) comprises a plurality of rotatable, like-size cylindrical rollers mounted between support members in a common plane, with spaced raised peaks of equal height radially extending from the cylindrical surfaces of said rollers, the peaks being so dimensioned and spaced from each other circumferentially and axially of the rollers that the combined area of the tops of the peaks supporting the bottom of a container is less than 5% of the area of the bottom of the container.  Figs. 7, 8 respectively show an enlarged sectional view of the peaks of a preferred coarse knurled roller, and a fine knurled roller.  Fig. 10 shows a side elevation of a portion of a roller.  The rollers are preferably made of a carbon bearing steel and case hardened.  The rollers may be mounted for use as a dead plate support (Fig. 1, not shown) or a link conveyer (Fig. 9, not shown).
Patent GB-483040-A (GB)
Title: Improvements in or relating to straight bar knitting machines
IPC: D04B15/64
Filed: 1936-10-06
Abstract: 483,040. Knitting - machines. COTTON, Ltd., W., and WILDERS, G. Oct. 6, 1936, No. 27099. [Class 74 (ii)] A straight-bar machine has a device for selecting each of a number of yarn carrier rods for operation in turn for at least one course to produce a repeating series of course and means for interrupting or disabling the device to allow any one of the rods to remain operative for a period longer than that provided for by the selection. As shown, the selection of yarn carriers a, b, c for ringless work is effected by a slide 14 that is movable transversely of the rods under control of rocking arms 19 and a rod 20 actuated by a cam 31. The cam 31 has a number of lobes each provided with three steps or levels which, during the rocking of the cam by a clawker 32 operated from a cam 33 on the main shaft, move the slides 14 over the rods a, b, c in turn. Over-rocking is prevented by friction and by spring catches 44, 45 which engage notches on a wheel moving with the cam. The rocking of the cam may be interrupted, to allow any one of the rods to remain operative, by inserting a prop 51 beneath the truck lever 36 to hold the truck 35 out of operation. The prop 51 may be controlled by a pattern chain, drum or Dawson wheel.
Patent GB-1327312-A (GB)
Title: Hererocyclic compounds
IPC: A01P3/00
Filed: 1971-07-05
Abstract: 1327312 Tetrazoloquinolines ELI LILLY & CO 5 July 1971 [8 July 1970] 27117/72 Divided out of 1327311 Heading C2C Novel tetrazolo (1,5-a) quinoline compounds of the general formula wherein each R<SP>5</SP> independently represents H, halo, CN or C 1-3  alkyl; each R<SP>6</SP> independently represents R<SP>5</SP>, R<SP>8</SP>, C 1-3  alkoxy, or -CH 2 Y, where Y represents amino, C 1-3  alkylamino, CN, OH, halo or C 1-3  alkoxy; R<SP>7</SP> represents R<SP>6</SP>, amino or acetamido; and R<SP>8</SP> represents C 2-3  alkenyl or C 2-3  alkynyl; subject to the limitation that no more than one R<SP>6</SP> or R<SP>7</SP> substituent represents R<SP>8</SP>, and that at least 5 but not more than 7 of the R<SP>6</SP>, R<SP>6</SP> and R<SP>7</SP> substituents represent hydrogen; and those phytologically acceptable mineral acid addition salts of those compounds wherein R<SP>7</SP> represents amino or R<SP>6</SP> represents -CH 2 Y, where Y = amino or C 1-3  alkylamino, are prepared by one of the following methods: (i) catalytic hydrogenation of a 4,5- unsaturated compound; (ii) reacting a 2-thione compound with hydrazine to provide a compound of formula and reacting this compound with HNO 2  to provide the tetrazoloquinoline compound; or (iii) by halogenation to form, e.g., a 4,5-dihalo compound from a 4,5-unsaturated compound.
Patent GB-187136-A (GB)
Title: Improved flexible armour shield for pneumatic tyres
IPC: B60C19/12
Filed: 1921-05-16
Abstract: 187,136. Birkinshaw, E. May 16, 1922. Jackets and covers. - A protector for use between the air-tube and cover a of a pneumatic tyre consists of narrow transverse metal strips b the overlapped edges of which are secured by pairs of rivets f to a central circumferential band d. In the construction shown, the protector is formed in sections, the ends of the strips d having interengaging tongues c and slots e.
Patent GB-1281319-A (GB)
Title: A chlorophenyl derivative and a process for the manufacture thereof
IPC: C07D303/22
Filed: 1971-04-19
Abstract: 1281319 Epoxyether F HOFFMANN LA ROCHE & CO AG 19 April 1971 [17 April 1970] 27224/71 Heading C2C 6,7 - Epoxy - 3 - ethyl - 7 - methyl - 1 - (pchloro - phenoxy) - 2 - nonene is prepared by reaction of 1 - bromo - 3 - ethyl - 7 - methyl- 2,6 - nonadiene with p - chloro - phenol to give 3 - ethyl - 7 - methyl - 1 - (p - chloro - phenoxy)-2,6-nonadiene, followed by epoxidation. The product is an insecticide.
Patent GB-174678-A (GB)
Title: Dirigible headlights for automobiles
IPC: B60Q1/124
Filed: 1920-09-27
Abstract: 174,678. Spencer, J. F. Sept. 27, 1920. Vehicle lamps, directing.-In means for directing the head-lamps of motor vehicles with the steering-gear, the lamp spindles 5 are rotatably mounted in bearings 4 secured to the chassis, the lower end of the one spindle being of square section and fitting into a square hole in an L-member 25 and being secured thereto by a nut 22 screwed to the other end of the spindle. The other end of the L-member is pivotally connected to a sleeve 33, which is internally screwed to receive the screwed shank 32 of a slotted member 31 engaging an arm 35 secured to the cross-rod 36 of the steering-gear of the car. Movement of the cross-rod 36 is transferred to the lamp spindles by the vertically-disposed arm 35, which is held in engagement with the slot 33 formed in the member 31 by the member 40 working in slots 34 formed in the side of the member 31. The spindles 5 are interconnected by arms 14, 15 and a rod 17, and are adapted to carry at their upper ends a bar 8 on which the lamp-supporting stems 10 are mounted so as to permit adjustment along the bar to suit different sizes of head-lamps. When it is required to support the lamp on a single stem, the spindle 5 is disconnected from the L-member 25 and turned through 90‹ so that, on reconnecting, the bar 8 extends rearwardly. In this case the arm 14 is adjusted to extend rearwardly and a single stem is used to carry the lamp as shown in Fig. 5.
Patent GB-533105-A (GB)
Title: Improvements in or relating to the manufacture of elastic knitted fabrics
IPC: D04B1/18
Filed: 1939-10-09
Abstract: 533,105. Knitted fabrics. MORLEY, Ltd., I. & R., and DICKERSON, L. Oct. 9, 1939, No. 27486. [Class 74 (ii)] An elastic fabric with a ruched appearance is produced by incorporating the elastic thread A, B at spaced points in spaced wales composed of a series of ordinary loops alternating with a series of tuck loops or float stitches, the elastic thread being incorporated in the spaced wales at the commencement of each series of loops. As described in connection with a ribbed fabric knitted upon a multi-feeder cylinder-and-dial machine, in which five dial needles are disposed between each pair of cylinder needles, the elastic thread A is fed at one feeder so that odd cylinder needles take and knit it. The even cylinder needles tuck, while the dial needles are out of action; at the second to the sixth feeder all the dial and the odd cylinder needles knit an ordinary yarn C, while the even cylinder needles tuck; at the seventh feeder the elastic thread B is fed to the needles so that odd cylinder needles tuck and the even cylinder needles knit, all the dial needles remaining out of action, and at the remaining feeders the ordinary yarn C is knitted by all the dial needles and by the even cylinder needles, while the odd cylinder needles tuck. A ruched fabric in which depressions are uniformly disposed over the whole of the fabric is obtained. In another form, the cylinder needles are divided into groups each of two needles, and the elastic forms in effect a net having a somewhat hexagonal mesh.
Patent GB-903073-A (GB)
Title: Electrostatic charging method and apparatus
IPC: G03G15/02
Filed: 1958-08-27
Abstract: 903,073. Charging with static electricity. KOLB, O. K. (Haloid Co.). Aug. 27, 1958, No. 27510/58. Class 35. Apparatus for electrostatically charging an insulating surface comprises means for causing successive elemental areas of the surface to come between a counter-electrode or virtual counter electrode and a charging member which has a contacting material, the resistivity of which is between 10<SP>5</SP> and 10<SP>9</SP> ohm-cms. and the resistance of which is chosen to ensure an adequate charging rate yet prevent an excessive reduction of charging potential in the contact area should the insulating surface include spots of high conductivity when a potential of 200 to 400 volts in excess of the measurable potential required on the insulating surface is created on the contacting surface of the material. The insulating surface may be the selenium photo-conductive surface 12 of a xerographic recording medium 10 which may have a conductive backing member 11, and as shown, the charging member is a roller 16 having a conductive core 18, and the contacting material is a covering layer 17 of resilient rubber having a thickness of # inch and a resistance of 200 megohms between the core 18 and a metal plate against which it is placed. The means comprises a variable speed motor 32 driving a chain 35 having spaced arms 37 which impel at a uniform speed the plates 10 along guide and support rails 13 which with the member 11 form the counter-electrode; in alternative embodiments, the plate may be placed on a wooden table which forms the virtual counterelectrode, and the plate may be held stationary and the roller traversed across it. The charge to be used is placed on the covering layer 17 by corona needles 22 fed over an adjustable taped resistor 28 from a power supply 27. The core 18 and counter-electrode 11, 13 are earthed and the needles 22 are at a high potential, but in an alternative circuit the voltage may be reversed.
Patent GB-1474352-A (GB)
Title: Display device
IPC: G04C10/00
Filed: 1975-06-30
Abstract: The liquid-crystal display device includes electrodes (2a and 3a) deposited in the form of transparent layers on the internal faces of the upper and lower plates (2 and 3). The electrodes (2a and 3a) serve, for example, to show a day of the week indication at a location which corresponds to the current day. The area occupied by these electrodes is delimited by the frames (5) affixed to the external faces of the two plates (2 and 3). These frames are permanently visible impressions. Affixing them to the two external faces of the device has the effect of avoiding, as far as possible, parallax when reading the indication of the day of the week. <IMAGE>