baber/WOPTO huggingface dataset:
Patent GB-661410-A (GB)
Title: Improvements in and relating to current pulse generating circuit arrangements
Inventor: CARRUTHERS ROBERT
IPC: H03K3/55
Filed: 1949-01-31
Abstract: 661,410. Condenser arrangements. MINISTER OF SUPPLY. Jan. 16, 1950 [Jan. 31, 1949]. No. 2675/49. Class 38 (iv). [Also in Group XL (c)] A high voltage pulse generator comprises a capacitor which is charged from a power source and discharged into an inductive load by means of an ionizable switching path, a first rectifier being connected in parallel with the switch and a second rectifier connected in series with the load and an auxiliary inductor connected in parallel with the series circuit of the second rectifier and load, the time constant of the circuit formed by the auxiliary inductor, the capacitor and the second rectifier being long compared with the de-ionization time of the switch. The Figure shows a capacitor C2 which is charged from the D.C. source of voltage V via the resistor R and is periodically discharged into the inductive load L1 and the auxiliary inductor L2 when the ignitron V1 is fired. The pulse of current which flows during the discharge is approximately a half sinusoid and has a duration t determined by the resonant frequency of capacitor C2 and the inductance of the load L1. At the end of time t the voltage across capacitor C2 has reversed but reversal of current through the load L1 is prevented by rectifier D1. Rectifier D2 presents a low resistance path for reverse current flow and thus effectively shorts ignitron V1 when the direction of current flow through capacitor C2 reverses. At the end of interval t therefore current flows through the circuit D2, C2, L2 for a time T which is determined by the resonant frequency of C2 and L2 and which may be made approximately equal to the interval between successive current pulses. The impulse voltage across the ignitron VI can be made such that a voltage which would otherwise result in back-firing is not reached within its de-ionization time.
Patent GB-307824-A (GB)
Title: Improvements relating to apparatus for establishing the correct position of the typecarriers on the type levers of type-writers
IPC: B41J1/00
Filed: 1929-01-26
Abstract: 307,824. Rheinische Metallwaarenund Maschinenfabrik S÷mmerda Akt.-Ges. March 14, 1928, [Convention date]. Addition to 305,203. Types.-In the apparatus described in the parent Specification for forming bends in typelevers and aligning type-blocks thereon, a frame adapted to be clamped on the head of each type-lever is provided with means for adjusting the type-block. The frame c shown in the Figure is clamped by means of a wedge g on the head of the type-lever a and is provided with screws f<1>, f<2> and a slide d operated by a micrometer screw e for adjusting the type-block b vertically and horizontally. A locking-pin h co-operating with the wedge engages a spring- urged lever h<1>. The frame is formed with an opening c<1> permitting the passage of a beam of light for projecting an image of the type-block on a screen.
Patent GB-1059878-A (GB)
Title: Terpolymers of dialkyl fumarates, vinyl esters and alkyl vinyl ethers
IPC: C08F16/12
Filed: 1965-01-21
Abstract: A lubricating composition comprises a major proportion of a lubricating oil and a minor proportion, e.g. 0.01-3% of a terpolymer. A-lubricating oil solution of the terpolymer, e.g. 10-80% may be used as a concentrate (pour point depressant) for lubricating compositions. The terpolymer has a specific viscosity of 0.090-0.800 in a 5% solution in benzene at 30 DEG  C. and is prepared by polymerizing at 25-150 DEG  C. in the presence of an organic catalyst a mixture of (A) 1 mole of a dialkyl fumarate containing 10-18 C atoms each in the alkyl radical and 0.5-1 mole of a mixture of (B) a vinyl ester of a C2- 10 fatty acid and (C) a C1- 10 alkyl vinyl ether, the mole ratio of (B) to (C) being 9:1 to 1:9.  The lubricating oil may be a mineral, vegetable or animal oil or dioctyl sebacate, di-nonyl adipate, polymerized cracked paraffin wax or alkylated diphenyl ethers.ALSO:A terpolymer having a specific viscosity of 0.090-0.800 in a 5% solution in benzene at 30 DEG  C. is prepared by polymerizing at 25-150 DEG  C. in the presence of an organic catalyst a mixture of (A) 1 mole of a dialkyl fumarate containing 10-18 C atoms each in the alkyl radical, and 0.5-1 mole of a mixture of (B) a vinyl ester of a C2-10 fatty acid and (C) a C1-10 alkyl vinyl ether, the mole ratio of (B) to (C) being 9:1 to 1:9. The terpolymer may comprise (A) the esters of fumaric acid and a mixture of decyl, dodecyl, tetradecyl and hexadecyl alcohols, (B) vinyl acetate and (C) ethyl vinyl ether. The catalyst may be azobis-isobutyronitrile together with chlorobenzoyl peroxide, or benzoyl peroxide and polymerization may be carried out in bulk.
Patent GB-903666-A (GB)
Title: Improvements in or relating to a control arrangement for a conveying system
IPC: B66B1/50
Filed: 1959-01-26
Abstract: 903,666. Magnetic tests. SIEMENSSCHUCKERTWERKE A.G. Jan. 26, 1959 [Jan. 24, 1958; Sept. 9, 1958; Sept. 25, 1958], No. 2772/59. Class 37. [Also in Group XXX] A magnetic sensing arrangement for detecting the passage of two relatively movable parts in a conveying, lift or railway system, comprises a magnetic transmitter on one of the relatively movable parts and a receiver including a Hall voltage generator on the other part. A permanent magnet 16 mounted on a moving part influences in passing a magnetic receiver which is mounted adjacent the path of the magnet and comprises a Hall wafer 11 which is positioned in the air gap of a magnetic circuit 12, 13, 14 and 15 and is supplied with central current from a power unit 18. During passage one of the permanent magnet poles (north shown) is always closer to the receiver than the other pole. The output of the Hall wafer acts on a switching amplifier 19, e.g. a transistor flip-flop circuit.
Patent GB-538801-A (GB)
Title: Improvements in or relating to electric couplings
IPC: H01R13/11
Filed: 1940-02-15
Abstract: 538,801. Two-part couplings ; thermionic valve holders. METCALFE, C., and SPENCER, R. E. Feb. 15, 1940, No. 2875. [Class 38 (i)] A socket contact is formed from a sheet metal blank 3 by cutting one end into three legs 10 and bending them at 13 in opposite directions so that the inner face of the central leg 12 and the edges of the two outer legs form a contact to receive an ordinary plug pin such as a thermionic valve leg. The central leg may be recurved so as to form a flared mouth. The contacts are retained in recesses 2 in a valve holder base 1 by the shanks 11 that are bent after being passed through slots 8 at the bottom of the recesses 2.
Patent GB-831028-A (GB)
Title: Machine for embossing material and colouring embossed surfaces thereof
IPC: A23G9/04
Filed: 1958-01-29
Abstract: 831,028. Moulding ice cream. HELLIWELL, M. W. Jan 29,1958 [June 22, 1957], No.2964/58 Class 87(2). [Also in Group XVI] Objects such as blocks 23 of ice cream are carried by an endless belt 18 under a rotary embossing die 34 and then under a rotary colouring stamp 40, the belt 18 being supported by a table surface 20 and by driving and driven pulleys 10, 13, and being provided with transverse locating plates 24 for the blocks 23. As shown, two embossing dies 34 and two colouring stamps 40 are detachably secured to cylinders 26, 35 respectively which are driven in synchronism with the belt 18 by an electric motor. The cylinders 26, 35 are mounted on blocks 30, 37 vertically adjustably mounted in slots 29, 38 by means of screws 32, 39. Colouring liquid is fed to the stamp 40 by a squeegee, or by a hopper 42 and roller 43. Additional locating stops 25 are provided on the belt 18..
Patent GB-1377365-A (GB)
Title: Fixture for locating a hollow article
IPC: B23B31/12
Filed: 1972-01-19
Abstract: 1377365 Work holders ASSOCIATED ENG Ltd 19 Jan 1972 [22 Jan 1971] 3000/71 Heading B3B A fixture for locating a hollow article, e.g. for holding a piston for machining, comprises a body 14, one or more plungers 33 carried by the body and movable towards the article being held to a position where the plunger presses against the article, and wherein the plungers 33 are moved in flexible walled cylinders 21 by a first fluid pressure and are gripped in an article engaging position by pressurizing with a second fluid pressure a space 22 surrounding the cylin. der wall 21 to radially deflect the said wall. In the embodiment described three equally spaced plungers 33 grip internally the piston skirt and a tongue portion 44 includes two pairs of oppositely acting plungers to engage between the gudgeon pin bosses 12. The fixture may be constructed to grip externally a workpiece. A fluid pressure control system controls, through a timing device, the supply of fluid to the plungers 33 and space 22, and includes air actuators that operate a series of hydraulic plunger pumps to feed the plungers 33. A further air actuator operates through an intensifier to produce high pressure oil to grip the plungers 33. The supply of oil to the plungers 33 may be individually metered to ensure centralizing of the article on the device.
Patent GB-448400-A (GB)
Title: Improvements in and relating to copper alloys
IPC: C22C9/00
Filed: 1936-01-31
Abstract: Copper alloys contain 0,5-3 per cent of cobalt, and a combined content of 0,25-1 per cent of beryllium and aluminium, the beryllium being preferably at least equal to the aluminium. In making the alloy, the beryllium and aluminium may be introduced as an alloy of 50-90 per cent of beryllium and 10-50 per cent of aluminium, preferably 80 per cent of beryllium and 20 per cent of aluminium. The cast or forged alloy may be heated for 1-2 hours at 750-950 DEG C., quenched, and reheated for 1-4 hours at 400-600 DEG  C. Specification 385,652 is referred to.
Patent GB-462207-A (GB)
Title: Improvements in or relating to coin-operated and coin-freed gas meters
IPC: G07F15/02
Filed: 1936-01-31
Abstract: 462,207. Prepayment mechanism for gas meters. BINGHAM, J. H., and METROPOLITAN GAS METERS, Ltd. Jan. 31, 1936, No. 3047. [Class 27] A plural-coin prepayment coin-operated gas meter comprises separate coin slot units A, B, Fig. 2, for pennies and shillings respectively, disposed non-coaxially upon the front of the meter and a single quantity mechanism C common to the units and operatively connected thereto so that when one of the units is actuated the coin driven wheel of that unit drives the coin wheel of the other through the quantity mechanism. At least one of the units is adjustable so that the quantity of gas supplied for each coin insertion therein may be varied without corresponding variation in the other unit. Each unit is of known form and comprises a coin pocket 3, Fig. 3, rotated by a knob 13, the coin engaging between teeth of a coin wheel 2 to drive this. A price-change plate 11 with coin slot 10 is locked in adjusted position by a locking dog 20 and is set to vary the point of insertion of a coin and therefore the amount of rotation given to the wheel 2 according to the price of gas, the coin being discharged through a slot 17 in a surrounding casing 1 to a receiver. When the coin reaches the slot 17, it engages a tail 42 of a pawl 41 and rocks this into engagement with the wheel 2 to prevent binding of the coin in the teeth of the wheel. The quantity mechanism is of the known type comprising a valve operating nut 22 travelling on a screw 23 which is rotated by prepayment. The nut moves along a guide rod 24 which is rotated about the screw by the meter mechanism to move the nut 22 to valve closing position. The coin wheels of the units A, B are fixed to spindles 4, the spindle of the penny unit A being operatively connected to one end of the screwed spindle 23 by a reduction gear 36, 35 giving a 4 : 1 ratio while the spindle 4 of the shilling unit is connected to the other end of the spindle 23 by a multiplying gear 5, 6 giving a 1 : 3 ratio. The knobs 13 of the two units are arranged to be rotated in opposite directions. In a modification, the two units are arranged in a common casing with the change plate of one unit tangential and slightly to one side of the other, so that a single locking- dog 20 locks both change plates and the coins are discharged into a common receiver. In this modification, the shaft 4 of the shilling unit is geared to the shaft 4 of the penny unit, this latter shaft driving through a pair of gearwheels a spindle which is operatively connected by worm gearing to one end of the screwed spindle. According to the Provisional Specification, the connections between the coin slot units and the screw of the quantity mechanism include a free-wheel mechanism permitting independent operation of the screw by the two units.
Patent GB-433754-A (GB)
Title: Improvements in or relating to frames for bicycles, tricycles and the like
IPC: B62K19/08
Filed: 1935-01-30
Abstract: 433,754. Cycle frames. GIORDANI, R., 32, Via S. Nicolo dell-Arca, Bologna, Italy. Jan. 30, 1935, Nos. 3063, 3064, and 3065. Convention dates, Jan. 30, 1934, April 26, 1934, and Nov. 30, 1934. [Class 136 (iii)] In a frame for bicycles, tricycles, &c. comprising two similar complementary parts formed from sheet metal by a shaping, stamping, or like operation, and secured together by welding, folding, riveting, &c., the frame consists of three radially-directed members united at a central part near the crank bracket, each of the radially-directed members being preferably tapered in section from the central part towards the outer end. The frame also comprises a front steering-fork the limbs of which are similarly formed from complementary sheet-metal parts. The main frame, Figs. 1 and 2, is formed of two complementary stamped metal parts A, B having longitudinal grooves and edge flanges 1, 2, which are welded, folded, or riveted together. The limbs 4 of the rear fork comprise grooved outer parts and flat inner parts, similarly secured together. The saddle-supporting member 8 may alternatively be constructed separately and then bolted, welded, &c. to the remainder of the frame. In a modification, the rear part of the frame is stiffened by struts or back stays between the top of the member 8 and the ends of the fork limbs 4, and the front part is strengthened by a curved strut between intermediate parts of the members 8, 11. The frame members themselves may be stiffened by longitudinal ribs. The limbs of the front fork are formed of stamped, pressed, &c. sheet-metal parts having central channelled portions 20, Fig. 9, and flanges 21 welded &c. together, the upper ends of the flanges 21 being widened at 25 and riveted to flanges 26 on a bridge or crown member 24.
Patent GB-942801-A (GB)
Title: Memory system having superconducting bistable elements
IPC: H01L39/06
Filed: 1960-01-28
Abstract: 942,801. Superconductive circuits. RADIO CORPORATION OF AMERICA. Jan. 28, 1960 [Feb. 24, 1959], No. 3145/60. Heading H3B. A memory system comprises a sheet 14 of superconductive material with pairs of holes 16 arranged in a matrix of rows and columns, the material in the region 17 between the two holes of a pair constituting a storage element. Row and column selector condensers 20, 24 are arranged on one side of the sheet 14 and a sensing conductor 26 common to all the storage elements is arranged on the other side. The conducting layers are separated by insulating layers 12, 18, 22. Reading is non-destructive. Writing.-At an intersection, selected row and column cnductors together produce a magnetic field sufficient to drive the corresponding region 71 resistive. Flux is linked with the pair of holes and is trapped when the selector currents fall to zero and allow the region 17 to become superconductive again. The direction of current in the region 17 represents the digit stored, I1 representing " 1 " and I0 representing " 0." Reading.-Reading currents in the selector windings are sufficient to draw resistive a region 17 of a storage element storing " 1 " but are insufficient if the digit stored is " 0." An output signal is induced in the sense winding 26 only if the stored digit is " I." Construction.-A sheet of the tin is evaporated or plated on a backing 12 of quartz or glass. Alternatively, tin or tantalum foil may be attached to the backing. The holes 16 are punched or etched. The sheet 14 is painted with a thin coat of insulating lacquer and row conductors 20 of lead are evaporated or plated thereon. The column conductors 24 are deposited on a further coating 22 of insulating lacquer. The row and column conductors are of " para " material which remains superconducting throughout the operation of the system. Lead may be used for the sheet 14 with techtnetium for the row and column conductors.
Patent GB-161746-A (GB)
Title: Improvements in or relating to submarine telegraphy
IPC: H04L5/14
Filed: 1920-02-02
Abstract: 161,746. Cox, K. C. Feb. 2, 1920. Inductances; variable resistances. - In a duplex telegraph system, each inductance coil 6, 7, Fig. 7, comprises enamelled wire wound upon an insulating tube 13, Fig. 8 surrounding an iron core 14. The cores 14 are mounted in recesses in yokes 15, 16, Figs. 6 and 7, and are held in position by a brass bolt 18. Gaps may be placed in the magnetic circuit by interposing brass caps between the ends of the core and the yokes. The enamel is removed from the turns along a narrow strip 20 after the coil is wound in order that the adjustable contacts 4, 5, 21 and 22 may contact with the coils. One end of each of the coils is connected to terminals 23, 24 and the contacts 21 and 22 are connected to terminals 25 and 26 respectively. The contacts 21, 22 each consists of metal rings 27, Fig. 8, covered with insulating material and a contact 28 mounted on a spring 29 and connected to the external circuit by a block 30 and screw 31. The ring 27 is adapted to slide over the coil and the contact 28 is caused to engage the coil by means of a screw 44. The ring 27 may be replaced by a slidable block. The adjustable contacts 4 and 5 each comprise a plunger contact 32, Figs. 6 and 9, having an arc or V-shaped end in order that it may engage one turn only of the coil. The plunger is mounted in socket 33 having a slot 36 in which a pin 35 on the plunger slides. The pin 35 is soldered to a head and the plunger is pressed into engagement with a turn of the coil by means of a spring 34. The socket 33 is mounted upon a slider 4<1> upon a bar 39.
Patent GB-572064-A (GB)
Title: Improvements relating to grinding and like machines
IPC: B24B33/10
Filed: 1944-02-21
Abstract: 572,064. Grinding-machines. MARX, E. Feb. 21, 1944, No. 3196. [Class 60] In a grinding-machine in which combined rotary and reciprocating motion is imparted by a power drive to the tool spindle, a clutch is provided to allow of disconnection of the reciprocating drive without disconnecting the rotary drive, and means is provided by which the spindle can be reciprocated by hand. The spindle 3, Fig. 2, having thereon a socket 4 for a honing-tool, is splined in a sleeve 5 rotated, through belt and worm gearing by an electric motor 10 mounted on the frame 1. The spindle 3 is also reciprocated axially by the motor 10 through gearing 18 ... 23, the gear 23 being fixed on a shaft 24 carrying a crank disc 25 having therein a diametral slot in which is adjustably secured a pivot pin 27 ; the pin engages one end of a connecting-rod 28, adjustable in length, and engaging a crank 30 which carries one part of a spring clutch, the other part of which effects the operation of a gear segment 42 meshing with a toothed wheel 43 on a shaft 44, which also carries a pinion 45 engaging a rack formed on a sleeve 47 slidable in a bearing 48 on the frame 1 and adapted to move the spindle 3 axially by means of ball bearings 49, 50. When the clutch is disengaged by turning a knob 38, the power reciprocation ceases, and the sleeve may be reciprocated by hand through a clutch on the end of the shaft 44; the clutch is engaged by pressure on the operating arms against a spring. The machine may be reset to the position obtaining before disconnection of the power drive by hand operation of the clutch members in the power train.
Patent GB-1420052-A (GB)
Title: Dialkyl thionocarbamate method
IPC: C07C333/04
Filed: 1974-01-23
Abstract: 1420052 Dialkyl thionocarbamates MINEREC CORP 23 Jan 1974 [13 July 1973] 03221/74 Heading C2C [Also in Division B2] Dialkyl thionocarbamates of the formula R-O-CS-NHR<SP>1</SP>, wherein R and R<SP>1</SP> are alkyl groups, and R<SP>1</SP> contains 1 to 6 carbon atoms are obtained by reacting C 1-6  alkylamines with alkali-metal alkyl xanthates in the presence of palladium ions or, when R is an isopropyl group, nickel ions.
Patent GB-280755-A (GB)
Title: Roll top desk with movable sides for typewriters and the like
IPC: A47B17/04
Filed: 1927-02-05
Abstract: 280,755. Marston, R., and Baker, W. H. Feb. 5, 1927. Roll-top desks.-In a roll-top desk of the type which has a base 1, a roll-top 4, a casing to house the roll-top and side wings 6, the side wings are removable and are capable of occupying a vertical position, as shown in full lines, or a horizontal position, as shown in broken lines. The wings are adapted to drop down into grooves formed between vertical runners 7 and end pieces 8, dowel pins 9 maintaining them in position by engaging holes in the base. The base is also provided with holes with which the dowels engage when the side wings are horizontal struts 10 hinged to the side panels being also brought into operation for supporting purposes. A projection on the strut engages a groove 12 on the underside of the wings.
Patent GB-490209-A (GB)
Title: Improvements in or relating to sound cameras for recording sound upon film strips
IPC: G03B31/02
Filed: 1937-02-04
Abstract: 490,209. Optical sound recording apparatus. BRITISH OZAPHANE. Ltd., and WENDER, E. J. Feb. 4, 1937, No. 3384. [Class 40 (ii)] [Also in Group XX] In a sound-film camera wherein recording is effected on the film at a point where it passes over a drum 32 constituting or on the same shaft as a flywheel which is driven by the film and is otherwise entirely free, and wherein the film engages opposite sides of a main feed sprocket 13 situated directly above the member 32, there are provided further feed sprockets 30, disposed laterally and symmetrically with reference to the main sprocket 13 and the drum, over which sprockets 30 the film is passed via loops 45 to and from the sprocket 13. The arrangement is such that the film passes from a magazine or casing 5 on one side of the apparatus, and over the sprockets and drum in the path shown to a magazine 5 on the other side, the film embracing at least half the periphery of the drum 32. The apparatus is housed in a casing comprising a long hollow base 1, which may contain an amplifier, a central hollow pillar 2 with a vertical partition 3, and wings 4 for receiving detachable casings 5 containing film spools. The casings 5 axe provided with opposed slides forming lighttraps which are automatically opened by pawls abutting against the sides of the pillar 2, to allow the film to pass, when the casings 5 are clipped in position. A motor 6, Fig. 2 mounted behind the partition 3, has a shaft 7 which carries a flywheel 8 and drives through a worm and wheel 10, 11 a shaft 12 carrying the main feed sprocket 13. A flywheel 18 is driven from the shaft 12 through friction wheels 14, 16, 17, the intermediate wheel 16 being supported by spring-connected levers 20, the free ends of which engage in guides 21 on the pillar 2. Inclined shafts 23 are driven indirectly, through skew gearing, by the motor shaft 7 ; these shafts.extend into the wings 4, and drive shafts 25 which are coupled to the film spools through friction clutches (not shown). The lateral feedsprockets 30 are mounted on shafts 29 which are driven by the inclined shafts 23 through skew gearing 28. A stub shaft 31, carried bv the partition 3, has freely mounted on it the combined drum and flywheel 32, which is rotated by the film. The flywheel preferably comprises a body of tungsten enclosed between flanged plates. A recording head 37 is mounted vertically below the drum 32, and is adapted to be adjusted by hand in a direction parallel to the shaft 31. A reproducing head 40 may also be provided as shown.