baber/WOPTO huggingface dataset:
Patent GB-673121-A (GB)
Title: Improvements in or relating to weighting means for the drafting rollers in textile preparatory and spinning machines
IPC: D01H5/50
Filed: 1949-10-21
Abstract: 673,121. Weighting devices for textile drawing rollers. CASABLANCAS HIGH DRAFT CO., Ltd. June 15, 1950 [Oct. 21, 1949], No. 27109/49. Class 120(ii) A textile drawing roller weighting device of the kind in which a compression coil spring is arranged to exert a downward pull on a roller saddle assembly is provided with a casing 1 housing the spring 5, which bears against a plunger 6, and the casing 1 has an open mouth 8 at its upper end and guide means, preferably in the form of a slotted bridge member 3, at the other end, through which passes a weight transmitting member 11 connected to the plunger 6 and to a weighting hook 12 above the casing 1. The upper end 11a of the weight transmitting member 11 is permitted considerable lateral movement, whilst the lateral movement of the lower end 11b is limited by the guide means 3. The casing 1 is preferably cylindrical and slit down each side to form two portions connected by the bridge member 3; the end remote from the bridge member is partially closed by a bearing plate 7 having an annular boss 9 which passes into an aperture 14 in the roller beam 13. The weight transmitting member 11 is preferably in the form of a flat strip connected at approximately its mid-point to the plunger 6.
Patent GB-504101-A (GB)
Title: An improved device for attaching to and controlling trailer vehicles
IPC: B62D13/04
Filed: 1938-09-19
Abstract: 504,101. Vehicle couplings. INGHAM, S. C. Sept. 19, 1938, No. 27216. [Class 103 (v)] In a towing and steering connection between a tractor and trailer of the kind in which the steering is effected by means of a link 12 pivoted to tho draw-bar 3 and to a steering wheel 9 or bracket 13 thereon, the draw-bar is pivotally connected at 6 to a V- shaped bracket 7 secured to the chassis longitudinals, so that the towing effort is transmitted directly to the chassis without affecting the springs. Preferably the bracket 7 is braced by means of stays 15 attached to a rear portion of the chassis.
Patent GB-946179-A (GB)
Title: Process for the polymerization of conjugated dienes
IPC: C08F136/04
Filed: 1962-07-16
Abstract: A polymerization catalyst for conjugated dienes e.g. butadiene, comprises one or more compounds of cobalt and/or nickel, one or more aluminium halides, and one or more tin compounds of the general formula, SnHxR(4-x) in which R stands for similar or dissimilar hydrocarbon radicals, and x is less than 4. The catalyst is generally made by mixing the components in a hydrocarbon diluent, and optionally in the presence of the diene. A preferred method of making the catalyst is to mix the aluminium halide with the tin compound in the absence of any diluent, and subsequently add the cobalt and/or nickel compound with the diluent. The tin compound may be tin tri-ethyl hydride, tin diethyl dihydride, tin tributyl hydride, or tin diphenyl dihydride.  The aluminium halide may be the chloride or bromide. Exemplified cobalt and/or nickel compounds are cobalt naphthenate and cobalt octoate.  Specification 904,404 is referred to.
Patent GB-143793-A (GB)
Title: Improvements in machines for drying sand
IPC: F26B17/16
Filed: 1919-11-06
Abstract: 143,793. Southall, J. Nov. 6, 1919. Drying-furnaces.-In a sand dryer comprising a series of heated plates over which the material passes, each plate is heated by a Bunsen or other gas burner. Fig. 1 shows a shaft dryer having sloping plates B disposed on opposite sides of the shaft, each plate being heated by a burner C, the gas supply being controlled by taps D connected with the supply pipes E. The ports B are connected by pipes F which allow the heated gases to circulate upwards. The material is fed to the top of the shaft from a boot A by a chain elevator, and leaves at the bottom by a shoot G.
Patent GB-757605-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J25/22
Filed: 1953-10-06
Abstract: 757,605. Cavity resonators. WESTERN ELECTRIC CO., Inc. Oct. 6, 1953 [Oct. 11, 1952], No. 27406/53. Class 40 (8). [Also in Group XL (a)] A secondary cavity 55 of lower Q than the output cavity 51 of a klystron is coupled to that cavity at a point remote from the output iris 66. Cavity 55 is tuned by plunger 57 and its Q is controlled by a resistive vane 59 the extent of the intrusion of the vane through a slot in the cavity wall being adjustable by micrometer screw 60; coupling to the output cavity is by iris 56 the aperture of which is variable by shutter 63. In certain applications (see Group XL (a)) the Q of the secondary cavity may be 0.25 to 0.75 (preferably 0.3 to 0.4) of that of the output cavity and the product of Q and the coupling coefficient K between 0.1 and 1 (preferably 0.8 to 0.9, or in another application 0.13).
Patent GB-1470697-A (GB)
Title: System and apparatus for fabricating welding wires
IPC: F16K7/07
Filed: 1974-06-20
Abstract: 1470697 Making welding electrodes STOODY CO 20 June 1974 [20 June 1973(3)] 27462/74 Heading B3A [Also in Divisions F2 G1 and G3] In a system for joining particulate material with continuously fed solid strip material (e.g. granulated alloy or flux to a mild steel strip to be formed into a welding electrode) the relationship between the flow of particles and the strip drive is controlled in response to measurements of the respective flow rates of the two materials so as to keep their ratio constant. Variations in strip thickness are measured at 12 and added to the nominal thickness at 14, the output of which is multiplied first by a preset width signal (not measured) and then with a speed signal measured at 20, 21. The resulting signal Fs represents strip flow in terms of volume and hence mass if density is constant; this is multiplied by the desired ratio at 22, thereby giving a desired value signal for the flow of particulate material from a hopper 44. The actual flow is measured at 50 by an optical device (see Division G1) whose output is compared with the desired value at 24. Any error is integrated at 26 and given a logarithmic characteristic at 27 to compensate for the logarithmic response of the flow control device. The signal from 27 controls pneumatic pressure to operate the flow control regulator 36; using a pressure feedback signal from transducer 38. The optical flow measuring device is repeatedly calibrated by comparison with a signal derived by differentiating the output of hopper load cells 46. Flow regulator valve, Fig. 5.-This comprises a cylinder of natural rubber 62 having the crosssection shown and arranged in an annular space to which control air pressure is applied. This progressively changes the cross-section from. Fig. 5A, in which the space 73 through which the particulate material flows is fully open, to Fig. 5B in which the space is fully restricted.
Patent GB-616632-A (GB)
Title: An improved plant or seed protector
IPC: A01G13/04
Filed: 1946-09-13
Abstract: 616,632. Plant protectors. RYCOTT, M. Sept. 13, 1946. No. 27499. [Class 6 (ii)] A plant protector consists of arched wires 1 between which is stretched muslin or like material 3 with strengthening flexible wire or cord. Wires 5 or the like act as cross-stays.
Patent GB-1031787-A (GB)
Title: Frame scaffolding
Inventor: HORNBY FRANCIS ALEXANDER
IPC: E04G1/14
Filed: 1963-07-12
Abstract: 1,031,787. Rod couplings. WOODHALLDUCKHAM CONSTRUCTION CO. Ltd. July 7, 1964 [July 12, 1963; Aug. 2, 1963], Nos. 27630/63 and 30681/63. Heading F2G. [Also in Division E1] Scaffolding frames have spigots 5, of cruciform or other ribbed shape in the top of the side tubes 2 adapted to engage sockets of polygonal cross-section, e.g. the lower ends of the square section side tubes 2 of similar frames. A scaffolding is shown built up of these frames with a diagonal brace. Tubes of oblong and hexagonal cross-section are also referred to.
Patent GB-1224165-A (GB)
Title: Improvements relating to temperature compensated crystal oscillators
Inventor: GROVES CHARLES MORLEY
IPC: H03L1/02
Filed: 1967-06-15
Abstract: 1,224,165. Oscillator circuits. PLESSEY CO. Ltd. 11 June, 1968 [15 June, 1967], No. 27632/67. Heading H3T. [Also in Division G4] In a crystal oscillator frequency drift with temperature change is compensated by means of a varactor diode in series with the crystal (Fig. 1, not shown). Control voltages for the varactor diode are developed by means of a temperature sensor comprising an NPN transistor TR1 and PNP transistor TR2 with fixed biases applied to their bases from a potentiometer network of resistors R1-R3. A compensation characteristic (Fig. 3, not shown) which is the inverse of the frequency/temperature characteristics of the crystal is developed by means of a voltage function generator which includes transistors TR3-TR5 each of which has its base connected to the collector of sensor transistor TR1, is provided with an individual emitter resistor R8, 11, 14 respectively and is biased to come into operation in a selected part of the temperature characteristic by means of an individual potentiometer, e.g. R9, R10. A further transistor TR6 similarly arranged, has its base directly connected to the collector of sensor transistor TR2. The transistors TR3- TR6 have a common collector load R20 from which a control voltage is fed to the anode of the varactor diode via emitter-follower TR7. A further portion of the frequency/temperature characteristic is developed by means of transistor TR9, which has its base connected to the collector circuit of sensor transistor TR1. Its collector is connected to the anode of the varactor diode via emitter follower TR10, a clamp potential being derived from a potentiometer comprising resistors R23, R24 via the buffer transistor TR8. Diodes D1-D4 all comprise constant volate dropping devices- Portions of the frequency-temperature charac. teristic of zero slope are generated by means of a potentiometer comprising resistors R30, R31 connected to the cathode of the varactor diode.
Patent GB-318928-A (GB)
Title: Improvements in or relating to electric storage batteries
IPC: H01M50/528
Filed: 1929-09-11
Abstract: 318,928. USL Battery Corporation, (Assignees of Jackson, A. F.). Sept. 12, 1928, [Convention date]. Couplings.-Each plate of a storage battery is provided with a lug and plates of like polarity are connected by their lugs to a strap 31 provided with a post 34 of semicircular cross-section. When the plates are in position in the cell the flat surfaces of the posts 34 abut against the partitions 25 and adjacent posts are connected by burning. The posts at the .end of the battery make contact with and are burned to similar semi-circular posts 37 embedded in the end walls of the container. The end posts 34 and the posts 37 are burned together and shaped to the positive and negative signs by means of a mould.
Patent GB-857332-A (GB)
Title: Improvements relating to electric load-supplying apparatus
Inventor: CALVERLEY HENRY BOLTON
IPC: B60L9/12
Filed: 1956-09-12
Abstract: 857,332. Control of D.C. motors. ENGLISH ELECTRIC CO. Ltd. Dec. 5, 1957 [Sept. 12, 1956], No. 27848/56. Class 38 (3). [Also in Group XXXV] The direct voltage applied to a load such as motors M1, M2 from an A.C. supply 11 through electrode controlled rectifiers such as the bridge arrangement of ignitrons I1, I2, I3, I4, is varied by altering consecutively the control voltage applied to the rectifier electrodes and the alternating voltage applied to the rectifier anodes. When energizing the motors from the zero voltage position by moving a controller, an igniter pulse source 18 is so operated that the igniter pulses are advanced in phase to the maximum igniter voltage position, after which the controller varies the output of supply transformer 10 by operating on load tap changing mechanism. In the low voltage position tapped windings 10c, 10d buck the respective halves of centre-tapped winding 10b. The contactor successively operates contacts T1-T5 and TT1-TT5 in conjunction with the shorting contactors P, PP across auto transformers 13, 14 until the buck is zero. The contacts of change-over switches 15, 16 are then operated so that when further movement of the controller operates the tap switches, windings 10c, 10d boost winding 10b by an increasing amount. The tapped secondary windings 10c, 10d may be replaced by an induction regulator, and the rectifiers may be of the excitron type.
Patent GB-1243622-A (GB)
Title: Improvements relating to sighting means for missiles
Inventor: FORD BRIAN
IPC: F41G7/30
Filed: 1961-08-01
Abstract: 1,243,622. Sighting- devices for missiles. BRITISH AIRCRAFT CORP. (A.T.) Ltd. 30 July, 1962 [1 Aug., 1961], No. 27876/61. Heading F3C. A battery of ground to ground guided missiles, each of which is controlled by electrical signals transmitted from its launching point to the missile while in flight, through electrical leads trailed behind the missile, is guided by signals from a sighting device aimed at the target by an operator. The sighting device, which includes an optical system through which the target is maintained in view by mechanical adjustment, is associated with potentiometers which provide guidance signals which are functions of the instanteous target location corrected for the initial launching position of each missile. The tappings of the potentiometers are coupled together and are moved simultaneously with the optical system while the potentiometer windings, which are fixed, each have an initial setting corresponding to the launching position of the associated missile, The potentiometer signals are applied to pitch- and-yaw programme generators together with signals corresponding to the cross slope of the launching points and the target elevation.
Patent GB-248050-A (GB)
Title: An improved holder for wireless valves and the like
IPC: H01R33/76
Filed: 1924-11-21
Abstract: 248,050. Eastick, J. C. N. Nov. 21, 1924. Vacuum tubes.-The sockets of a valve-holder are in the form of coiled springs mounted on a panel or on one or more insulating plates. Reference has been directed by the Comptroller to Specifications 231,280 and 242,057.
Patent GB-966587-A (GB)
Title: Hydrostatic vehicle drive and control system
Inventor: MCCOURTY WILLIAM DONALD
IPC: B60K17/10
Filed: 1961-08-01
Abstract: 966,587. Motor vehicle hydraulic transmission; controlling vehicles. H. M. HOBSON Ltd. Oct. 22, 1962 [Aug. 1, 1961], No. 27894/61. Heading B7H. [Also in Division F2] In an hydraulic transmission for a motor vehicle comprising two variable output reversible pumps 40 supplying fluid through separate hydraulic circuits to variable stroke reversible motors 26 driving the wheels on each side of the vehicle, a centrifugal governor 36 responsive to the speed of an internal combustion engine driving the pumps 40 regulates the stroke of the motors 26 to vary the engine load and thereby maintain the engine speed constant. Each pump 40 is driven by the engine through gearing 46 and comprises a pintle timing valve 45 and seven axial pistons 42 actuated by a swash-plate 39. The swash-plates 39 of both pumps are adjustable by servo pistons 43, either in unison for forward or reverse selection by means of a lever 8, or oppositely for differential driving of the motors 26 for steering purposes by means of a steering wheel 51. Each pump 40 is connected by interchangeable high and low pressure lines 16, 17 including flow limiter valves 5 for preventing wheel spin to the motors 26 which each comprise a track ring 33 of variable eccentricity and a rotor 30 coupled with its associated road wheel by an epicyclic reduction gear (not shown). Each motor 26 also includes a scavenger pump 31 which returns oil from between the motor casing and the wheel rim to a reservoir 2. Variations in engine speed resulting from actuation of the accelerator pedal are detected by the governor 36 which actuates the control valve 19 of a servo piston 35 connected by cables 34 to the control valves 25 of servo pistons 29 which act on the track rings 33 to vary the stroke of the motors 26 and are supplied with fluid from the high pressure line 16 or 17 through one of non- return valves 27 or 28. For cooling, deaerating and make-up purposes an engine-driven gear pump 37 provided with a relief valve 38 supplies fluid to the high pressure lines 16 or 17 through one of non-return valves 12 or 13, and shuttle valves 11 connect the low-pressure lines 16 or 17 to a relief valve 1 and the high pressure lines 16 or 17 to relief valves 9 and non-return valves 15 supplying the servo pistons 35, 43. Initial operation of a brake pedal 22 actuates valves 21 which restrict fluid flow from the motors 26 to build up a back pressure, flow of fluid to the motors being permitted by non- return valves 20. Further actuation of the pedal 22 increases the stroke of the motors 26 by means of a cable 60 connected to the control valve 19 of the servo piston 35.
Patent GB-512093-A (GB)
Title: Tobacco feeding device
IPC: A24C5/39
Filed: 1938-09-24
Abstract: 512,093. Tobacco-feeding machines. MULLER, J. C. Sept. 24, 1938, No. 27908. Convention date, Oct. 18, 1937. [Class 130] In a cigarette- or cigar-making machine or a tobacco packaging machine tobacco, showered down a vertical channel 9 having a vibrating wall 11, is discharged on to a conveyer band 10. The wall 11 is pivoted at its upper end and vibrated by crank mechanism, 13,14 and as the wall 11 approaches the wall 15, which does not extend to the band 10, the tobacco in the channel is compressed and part is forced past the wall 15 on to the band 10. The tobacco is fed into the channel by a picker roller 8 which removes tobacco from a carded feed roller 2 with which a scraper 3, oscillated rapidly by crank mechanism 4, 6 co-operates. The band 10 delivers a layer of tobacco across a table 18, which may be roughened to increase the compression due to friction. The tobacco forced over the table on to a supporting surface 23 is severed by a rotary knife 20 which co-acts with a cutting edge 19 on the table. When the knives 19, 20 co-act, a cam 47 actuates a lever 48 to release the surface 23 which falls into a vertical position to discharge the severed tobacco into one of a series of containers 27. A spring 50 then returns the lever 48 to maintain a second supporting surface 28 adjacent the table. This surface 28 is moved adjacent the table by a spring 51 on one of the arms, 21, 35 carrying the knife 20. During further rotation of the knife 20 the spring 51 engages the surface,23 and carries it around to the knife 19 where it replaces the surface 28 after another tobacco portion has been severed. A spring 51a prevents the surface 28 from falling towards the knife 19 after the knife 20 reaches its uppermost position. In modified constructions (a) the tobacco is forced over the table 18 on to a smooth rotating roller and a knife which moves vertically downwards co-operates with the knife 19 to sever a charge of tobacco and then moves concentrically with the roller to discharge the severed tobacco, and (b) the tobacco is forced over the table 18 on to a supporting surface formed on the back of one knife and is severed by a second knife, the back of which acts as a supporting surface for the tobacco until the first knife co-operates with the knife 19 to sever the tobacco on the back of the second knife.
Patent GB-1055264-A (GB)
Title: Improvements in and relating to fluid flow control valves
Inventor: WORDSWORTH JACK
IPC: F16K31/10
Filed: 1962-07-20
Abstract: 1,055,264. Vehicle suspensions. ARMSTRONG PATENTS CO. Ltd. Oct. 16, 1963 [July 20, 1962], No. 27942/62. Heading B7D. [Also in Division F2] Two or more fluid spring chambers of equal capacity are connected together, and e.g. to interconnected front and rear wheel suspension mountings of a four-wheel vehicle, to carry the suspension load whereby the stiffness may be varied by the interposition of a solenoid operated fluid control valve (see Division F2), enabling one of the spring chambers to be disconnected whereby the suspension stiffness is doubled. With a heavily laden vehicle, a spring-loaded servo valve, associated with the solenoid operated valve, yields whenever the pressure in the isolated chamber exceeds that in the working chamber, e.g. during rebound movements and the influx of fresh medium into the working side of the system automatically increases the riding height. The valve may be opened and closed at any time as required in order to achieve the desired suspension setting whilst the vehicle is in motion.
Patent GB-483554-A (GB)
Title: Improvements in weighbridges or other weighing machines
IPC: G01G19/02
Filed: 1936-10-15
Abstract: 483,554. Weighing-apparatus. HUDSON, B., and HORSMAN, T. Oct. 15, 1936, No. 27972. [Class 143] The platform of a weighbridge or other weighing-apparatus is supported on the arms a<4> of two main levers a<1> connected by hanging links f to secondary levers b which are in turn connected by a transfer lever y to the indicator. The main levers are fulcrumed on arms a<2> and are prevented from lateral movement by friction screws h. In a modification Figs. 5, 6 (not shown), the secondary levers b are arranged above the main levers, and the platform is slung by links from the main levers.
Patent GB-464051-A (GB)
Title: Improvements in or relating to film spools for photographic cameras
IPC: G03B17/30
Filed: 1935-10-11
Abstract: 464,051. Photographic roll - film spools. KODAK, Ltd. (Eastman Kodak Co.) Oct. 11, 1935, No. 28116. [Class 98 (i)] [Also in Group IX] A spool comprises a hollow sheet-metal core with trunnions at each end, one or each of which is deformed from its cylindrical shape to form a single continuous key slot having two parallel metal edges spaced apart and extending wholly or partially across the trunnion. The core 1 is made from a sheet metal blank rolled up so that the edges 2 abut, leaving slots 3, 4. Trunnions 6 extend beyond the flanges 7 on annular shoulders 5 and the end of one or both trunnions 6 is deformed by bending the metal to form a single parallel-edged slot 8a extending across the end of the trunnion. The metal may also be formed with two rightangled. flanges 10a. The flanges are secured on the shoulders of the spool core by forcing the metal of the flange into indentations in the core. The flanges are accurately located over indentations 12 in the core 1 by a suitable fixture, and the metal is forced by a staking tool applied at 11 to force the metal of the flanges into the indentations.
Patent GB-883198-A (GB)
Title: Improvements in or relating to electric cables
IPC: F41G7/32
Filed: 1959-08-18
Abstract: 883,198. Cables. BOLKOW, L., [trading as BOLKOW - ENTWICKLUNGEN KOMM.- GES.]. Aug. 18. 1959 [Aug. 20, 1958], No. 28200/59. Class 36. A flexible electric cable, for transmitting signals between a control point and a flying object such as a rocket, comprises at least two parallel, spaced apart, longitudinally-extending, lacquer-insulated conductors 1 with a plurality of threads 3 lying between and extending in parallel with the conductors, the threads having sufficient tensile strength to relieve the conductors of most of the tensile strain in the cable, conductors and threads being enveloped in a tightly-coiled helix 4 of fibrous material. The tensile threads may be of silk, plastics material or glass and the fibrous sheath may be of silk or plastics material. The number of tensile threads may be varied at different points along the length of the cable to correspond with the change in tensile stress as the cable is paid out when in use.