baber/WOPTO huggingface dataset:
Patent GB-442246-A (GB)
Title: Improvements relating to the mixing of concrete mortar and the like
IPC: B28C7/04
Filed: 1934-10-26
Abstract: 442,246. Knitting-machines. BLACKBURN & SONS, Ltd., G., Kirkewhite Street, Nottingham, and START, F., 136, Gordon Road, West Bridgford, Nottinghamshire. Oct. 25, 1934, No. 30580. [Class 74 (ii)] Prior to knitting the heel tabs of a stocking, on a Cotton's machine, the central part B of the lower sinker sley in each division of the machine is moved back, taking with it a corresponding length of presser bar out of range of the instep loops. The part B is locked in extreme positions by a rod G carrying inclines acting on a projection H or a plate L respectively. The joints between the fixed and movable parts of the sley are bridged by projections F passing into clearance recesses.
Patent GB-951437-A (GB)
Title: Improvements in and relating to plastic bags and the manufacture thereof
Inventor: COOK SYDNEY
IPC: B65D30/20
Filed: 1959-09-09
Abstract: 951,437. Making plastic bags. DALE PRODUCTS (PLASTICS) Ltd. Sept. 8, 1960 [Sept. 9, 1959], No. 30824/59. Heading B5D. [Also in Division B8] Bags are fabricated from a flattened tubular blank of plastic material, e.g. extruded polythene, having oppositely disposed side gussets throughout its length in which the medial folds of the gussets are either disposed back-to-back approximately at the centre line of the blank or at equi-distant points spaced therefrom, two severing cuts of straight or arcuate form which completely remove parts from the blank being made at an angle to one another, either one in each oppositely disposed gusset, or both in the same gusset, at that part of the blank which is to become the bottom of a bag, the open edges resulting from the severing cuts being subsequently welded. A blank 20 in which the medial folds 25, 26 of the gussets 23, 24 are approximately at the centre line 27, Fig. 1, forms a bag as shown in Fig. 3 when the open edges C resulting from the cuts A are heat-sealed together. Similarly, a blank 20a in which the medial folds 25a, 26a are spaced apart, Fig. 5, and cuts are made at A<SP>1</SP> forms a bag as shown in Fig. 7. Fig. 11 shows a blank in which there is a large space between the medial folds and the gussets are narrow, and from this blank a number of smaller blanks 32 are cut. A<SP>3</SP> being the cuts across the gussets 31, A 4  being transverse cuts and A 5  a central longitudinal cut. The cut edges are heat-sealed together as before, except those at A 5  which define the bag opening, the resulting bag being shown in Fig. 12. When the cuts through the gussets are arcuate the base of the bag is dome-shaped, e.g. if the cuts C in Fig. 1 are arcuate the resulting bag is as shown in Fig. 10.
Patent GB-1401080-A (GB)
Title: Semi-permeable membrane assembly
IPC: B01D/
Filed: 1972-06-30
Abstract: 1401080 Semi-permeable membrane assembly RHONE-POULENC SA 30 June 1972 [1 July 1971] 30837/72 Heading B1X A method of forming a semi-permeable membrane assembly comprises the steps of providing first and second rigid frame plates 3, 1, the second frame plate having first and second mutually parallel faces and at least one orifice 15 which extends between the said first and second faces, the wall of the or each orifice diverging in the direction from the said first face to the said second face along at least part of the length of the orifice, locating a stack 7 of plane membranes and interposed plates between one face of the first frame plate and the said first face of the second frame plate; locating within the or each orifice the free end 13 of a respective tiebar 23 which extends substantially perpendicularly from said one face of the first frame plate and deforming that portion of the or each tiebar extending through the divergent portion of an associated orifice, while compressing the first and second frame plates and interposed stack in a press, to form a head which fits snugly into said divergent portion 19, thereby to interconnect the first and second plates and to limit relative movement therebetween, the clamping force exerted by the press compressing the assembly to between 0.95 and 1.0 times a predetermined operational thickness of the assembly. The tie-bars may be integral with the first plate or the first and second plates may be identical, the tie-bars being deformed at both ends in the same way. The plates and tie-bars may be of metal or plastics.
Patent GB-193157-A (GB)
Title: An improved packing device for use between a fixed and a rotating part
IPC: F16J15/447
Filed: 1921-11-19
Abstract: 193,157. English Electric Co., Ltd., and Chittenden, J. P. Nov. 19, 1921. Stuffing-boxes, substitutes for; connected to source of high or low pressure.-Packing for a turbine shaft or similar rotating part comprises rings 7 on the shaft or on the stationary part secured between spacing rings 6 and carrying thin tongues 8 projecting towards rings 10 of carbon or other soft material carried by the stationary part or by the shaft. The tongues 8 may be turned on the rings 7 and are preferably eccentric to the shaft, or otherwise formed to prevent grooving of the carbon rings. The latter are housed in casing-rings 11 of U-section formed in halves and having longer limbs at the low-pressure sides. The periphery of each carbon ring communicates with the high-pressure side by perforations 13 in its casing-ring and its outer side communicates with the lower pressure by perforations 14. A passage 5 at the outer end of the packing-box leads to the atmosphere. The carbon rings are in segments held together by spring rings 12 or radial springs. The casing-rings 10 may be carried by a box which is adjustable axially in the casing to vary the clearance. The outermost ring 7, which packs against the casing, is allowed a larger clearance than the other rings 7.
Patent GB-468623-A (GB)
Title: Improvements in and relating to electron multipliers
IPC: H01J25/76
Filed: 1935-11-08
Abstract: 468,623. Electron multipliers. KEYSTON, J. E. Nov. 8, 1935, No. 30989. [Class 39 (i)] An electron multiplier arrangement has means arranged outside the electron multiplier for producing a variation of the direction in which, or the position from which, input electrons enter the multiplier, by which variation the effective number of targets between the electron source and the output terminals of the multiplier is varied and hence the output thereof is varied. In one form the multiplier comprises two plates P1, P2, Fig. 1, between which an oscillatory voltage is applied. An electron beam from cathode C enters the multiplier through an aperture in plate P1, and travels in zigzag fashion between the plates with multiplication at each impact, until collected by the anode A. Deflecting plates D are provided which vary the angle at which the primary beam enters the multiplier and hence the number of impacts. The dotted lines show two positions of the deflected beam. In another form a number of targets E1, E2, E3, Fig. 3, are maintained at successively increasing positive potentials. An electron beam from cathode C strikes the first target E1 and, under the influence of accelerating electrodes F1, F2, and an external magnetic field, hops along the targets multiplying at each impact until collected by electrode A. The deflecting plates D enable the primary beam to be variably distributed between targets E1, E2, which are provided with inclined adjacent edges as shown in Fig. 4, and the effective number of targets is thereby varied. Upon extreme deflection the beam may be caught by anode F1, the output dropping to zero, and an apertured diaphragm in the tubular part of F1 may assist this action. In a modification, the multiplier comprises a continuous cylindrical electrode of resistive material along which a potential difference is maintained, and a central rod-like accelerating electrode. An electron beam is directed into one end at an angle which can be varied by deflecting plates and the variably multiplied beam is collected on a disc anode closing the other end. In a multiplier of zigzag type, two of the targets may comprise a photoelectric layer and a fluorescent layer on opposite sides of a glass plate. The primary electron beam can be deflected so as to fall on either of the fluorescent surfaces, producing a photoelectric beam which is multiplied. By this means the position at which the beam enters the multiplier may be varied. The fluorescent surfaces may be dispensed with and a deflectable beam of light substituted for the primary electron beam. The fluorescent and photoelectric surfaces may be continuous resistive coatings along which a potential difference may be maintained. The path of the primary electron beam may be varied by mechanical movement of part of the apparatus. Specification 465,144 is referred to.
Patent GB-519098-A (GB)
Title: Improvements in or relating to internal combustion engines using dust fuel
IPC: F02B45/02
Filed: 1938-10-27
Abstract: 519,098. Powdered-fuel engines. HANNOVERSCHE MASCHINENBAU AKT.-GES. VORM. G. EGESTORFF (HANOMAG). Oct. 27, 1938, No. 31052. Convention date, Jan. 17. [Class 7 (ii)] For supplying dust fuel to an admission chamber or working space of an engine cylinder, a compressor 0 which draws in air through a port G and valve T and receives part of the air compressed in the engine cylinder from a passage H supplies highly compressed air through a valve F into the admission chamber or working space, the air carrying with it a mixture of dust fuel and air drawn from a mixing-chamber R. The crankshaft L of the compressor may rotate at several times the speed of the engine crankshaft and the compressor may supply additional combustion air through a mixing-chamber D to the cylinder before the working stroke has ended. The air drawn in through the port C passes around the outside of the mixing-chamber and cools the same. The compressor may be arranged adjacent the cylinder in other positions than that shown.
Patent GB-845002-A (GB)
Title: Improvements in and relating to lighters of the kind employing a removable reservoir
IPC: F23Q2/16
Filed: 1956-10-12
Abstract: 845,002. Liquefied gaseous fuel lighters. SOC. D'ETUDES ET DE RECHERCHES TECHNIQUES. Oct. 12, 1956 [Oct. 12, 1955], No. 31227/56. Class 75(3). In a liquefied gaseous fuel lighter in which a fork of a lever 5 engages beneath a collar 7 on a stem 4 of a valve provided on a removable reservoir 3 and the lever 5 is pivoted about a line perpendicular to a plane passing through the axis of the valve and lever the spacing of the fork arms 5a, 5b is variable so that in a closed position the arms engage beneath the collar 7 and in an open position the collar 7 can pass between the arms 5a, 5b and means are also provided for maintaining the arms in the closed position at least during the pivotal movement of the lever 5. In the arrangement shown in Figs. 1 and 2 the lever 5 comprises two arms 15a, 15b pivoted about a pin 8 and joined at one end 15c and at the other end formed with curved portions 5a, 5b which engage beneath the valve collar 7 and spring 13, either wrapped round a fixed stop 16 or the spindle 8 in which case its helical turns replace the stop 16, not only holds the lever 5 in the inoperative position but also presses laterally against the lever arm 15a adjacent the end 15c. When the outer casing 1 of the lighter is removed, Fig. 3 (not shown), a boss 17 and the lever arm 15b move outwards and the spring 13 tilts the other lever arm 15a about the spherical end of the boss 16 to move the lever ends 5a, 5b from beneath the collar 7 thus allowing the reservoir 3 to be removed. In a further arrangement, Fig. 4 (not shown), the bosses are both slidably mounted on the spindle 8 to allow the lever arms 15a, 15b to be moved apart by a spring 23 arranged between the arm when the outer casing 1 is removed. In the modification, Fig. 6 (not shown), separate spring arms are connected at one end by screws and a spacer. The spacer can be made fast with operating rod 12. In a further modification, Fig. 7 (not shown), the separate arms of the lever are connected by a U-shaped spring member. A scissors arrangement of the lever arms 30, 31 are shown in Fig. 9 in which the ends 5a, 5b are biassed to the closed position by a spring 32. In a modification of the scissors arrangement of the arms 30, 31 the spacing of the ends 5a, 5b is determined by a screw 33. If the screw 33 is threaded with each end of each arm 30, 31 the spring 32 is not necessary.
Patent GB-156982-A (GB)
Title: Improvements in carburetters for internal combustion engines
IPC: F02M7/18
Filed: 1919-12-13
Abstract: 156,982. Vogel, J. Dec. 13, 1919. Spray carburettors.-The carburettor comprises a casing a, a laterally-disposed float chamber d, a fuel chamber c communicating with and disposed between the casing a, and the float chamber c, a spring-supported tubular valve-member g in the fuel chamber c, provided at the upper end with an air-valve r and at the lower end with an integral fuel-valve k, and an horizontal port w leading from the float chamber to the valve k. The air-valve r is provided with a central passage leading to radial ports s, and the tubular member g has radial air-outlet ports h at its lower end. The member g is pressed by the spring o against a collar p on the screwed sleeve m, the adjustment of which controls the position of the fuelvalve k relatively to its seat l. The collar p carries a casing x provided with air inlets and with a shaft v on which is mounted an eccentric u bearing against the upper end of the adjustable air-valve r; by rotating the eccentric u by an arm y, the member g may be depressed against the spring o to reduce the fuel supply, for example when used on aircraft at high altitudes, or to cut off the fuel supply entirely, in which case, when the throttle is open, air is supplied to the engine for braking and cooling.
Patent GB-1521985-A (GB)
Title: Speed monitoring apparatus
IPC: G01P3/487
Filed: 1975-07-25
Abstract: 1521985 Frequency switch SPERRY RAND CORP 25 July 1975 31286/75 Heading H3T In an apparatus suitable for monitoring the speed of a rotating member e.g. a magnetic record disc or drum, a bistable flip-flop 50 is set by an index counter 30, 40 counting pulses from the member and on reaching a first, pre-set count and reset by a counter 10, 20 counting clock-pulses and on reaching a second pre-set count and the counter which first reaches its pre-set count is arranged to actuate a zeroising circuit 60 which zeroises both the counters. In operation, the bistable flip-flop 50 is periodically reset by the output of the clock counter 10, 20 to provide an unsafe speed indication until the speed and hence the repetition rate of pulses produced by the member exceeds a desired minimum when the counter 30, 40 provides an output earlier than the counter 10, 20 to set the bistable 50 and provide a safe signal. To prevent chattering of the bistable output the setting of the bistable indicative of a safe speed is arranged to effectively increase the preset count of the clock counter.
Patent GB-336435-A (GB)
Title: Improvements in micrometer calipers
IPC: G01B3/18
Filed: 1929-10-15
Abstract: 336,435. Joriot, C. Oct. 15, 1928, [Convention date]. Linear-dimension gauges. - In a wide range micrometer caliper of the type in which one of the heads is movable on the beam to any of several predetermined positions, the beam has spaced slots out of the plane of the heads, in which pairs of adjustable coned members are seated, a setting finger on the movable head engaging these members. In the form shown the head D bearing the micrometer screw d has a setting finger i which is pressed into contact with the pairs of coned members f by a leaf spring k. To move the head a locking collar m provided with a cam surface engaging a stop in the head to retain it in locking position, is turned to the position shown to release the finger i and the head D is then turned through a right angle, raising the finger i clear of the coned members f and can then be slid into a new position. The members f<1> can be adjusted by turning them in the threaded part of the beam by means of a tommybar engaging in holes f<2> in the members.
Patent GB-341117-A (GB)
Title: Improvements in or relating to lifting jacks
IPC: B60S9/04
Filed: 1929-10-15
Abstract: 341,117. Lifting-jacks. SESSIONS, D. W., 3, Broughton Avenue, Finchley, London. Oct. 15, 1929, No. 31310. [Class 78 (iii).] A lifting-jack which may be attached to a vehicle has incorporated therewith a casing comprising separable portions adapted to enclose the jack when collapsed. As applied to a jack adapted to be secured to a motor vehicle, a screwed spindle P engages nuts F to which the ends of the toggle links D, G are connected by pivots d3. The upper ends of the links D are connected by pivots d to a plate E adapted to be secured to the vehicle and have engaging teeth d<2>. The lower ends of the links G are pivoted to a plate G<3> carrying a ground engaging foot G<5> and also have engaging teeth. The plate E carries a casing A open underneath and adapted to receive the jack when collapsed. The lower surface of the casing is closed by cover pieces C, C<1> secured to the lower links G and by the foot G<5>. The plate E is secured to the vehicle spring J, Fig. 5, by bolts engaging brackets K, K<1> having inclined and slotted lugs, and to an axle J<1>, Fig. 7, by bolts engaging slots E<7> in the plate E and slotted straps K<1>.
Patent GB-790219-A (GB)
Title: Variable reactance circuit elements and applications thereof
Inventor: FAIRHURST HAROLD ALFRED
IPC: H04N5/46
Filed: 1954-10-29
Abstract: 790,219. Phase measurement. MURPHY RADIO, Ltd. Oct. 27, 1955 [Oct. 29, 1954], No. 31332/54. Class 37. [Also in Group XL (b)] Incoming waves, the phase relation of which is to be determined, are supplied to lines 21, 22 both connected to a phase discriminator 23. A delay line 6 whose delay may be varied by a D.C. excitation current from a source 25 (see Group XL (b)) is inserted in the .line 22. By variation in the exciting current controlled by a rheostat 26 the wave in line 22 may be brought into phase with that in line 21 and the output of the discriminator reduced to zero. The rheostat 26 may be calibrated in terms of phase difference.
Patent GB-1377777-A (GB)
Title: Regulated voltage supply apparatus
IPC: H02M3/338
Filed: 1972-07-05
Abstract: 1377777 Transistor pulse circuits WESTERN ELECTRIC CO Inc 5 July 1972 [6 July 1971] 31389/72 Addition to 1322009 Heading H3T [Also in Divisions H2 and G3] A D.C.-D.C. converter as disclosed in the parent Specification 1,322,009 and consisting of an inverter 10, a ferroresonant regulator 11 providing the output voltage at 36, 37, and a feedback circuit 13 controlling the inverter frequency to maintain the output voltage constant, is modified by selection of circuit values such as R43, R44 and winding 29 to cause the output voltage at 36, 37 to fall abruptly, 21, 22, Fig. 2, when a certain frequency is reached. Thus in the event of a fault such as short circuiting of T54 which makes the frequency increase due to reduction of the time constant 43, 44, 45, the circuit acts to further increase the frequency, and therefore the output voltage, until the point 21 is reached and protection effected. The normal operating region of the inverter is zone A. The characteristic of Fig. 2 is explained by the fact the capacitor 32, which times the leakage inductance of winding 29 to enhance the output voltage, will normally discharge through winding 29 when the latter saturates and falls to a low impedance. At a sufficiently high frequency however, the core fails to saturate before the input voltage reverses, and no low impedance discharge path is provided for C32 which then opposes the secondary voltage for a portion of each cycle, and the output voltage falls appreciably. In a modification (Fig. 4, not shown) the winding (46) of the frequency controlling circuit (13), which is shorted by an inductance 47, Fig. 3, during a portion of each cycle to simulate core saturation in the inverter transformer 30, is only loosely coupled to the primary (58) and the resulting leakage inductance is used to replace the inductance 47.
Patent GB-230897-A (GB)
Title: Improvements in and relating to mechanically operated changeable signs
IPC: G09F11/02
Filed: 1923-12-14
Abstract: 230,897. Evans, W. V. G. Dec. 14, 1923. Prisms, rotating; illumination, changing advertisements by controlling.-A mechanically operated sign comprises two series of revolubly mounted elements 4, 5 of triangular cross-section constructed of transparent or translucent material bearing components of the adv,ertisement. The series are arranged back to back within a casing 1 having view openings. 1<a>, 1<b> at back and front. Each element contains a lamp at each end carried upon a fixed stub shaft 9 through which the leads pass. Intermittent motion is imparted to the elements from an electric motor by pinion, worm, pin and slot, and pawl and ratchet gearing. The elements are aligned by rods' &c. 34 at one or both ends, the rods being pivoted to links 35 which are under the influence of springs 37. Springs 37 also draw the upper ends of the :rods 34 to press them against the faces of the elements 4, 5. The lamps may be extinguished during the rotation of the elements, and are then illuminated in succession by a rotating switch. Means may be provided by suspending the sign.
Patent GB-617849-A (GB)
Title: Improvements in the manufacture of articles from ferrous metal powders
IPC: C22C33/02
Filed: 1946-10-22
Abstract: A method of obtaining an article from iron or steel powder which may be mixed with alloying substances such as tungsten, vanadium, copper, cobalt, tantalum, molybdenum, silicon, nickel, chromium, manganese, titanium, aluminium or combinations thereof, comprises forming a compact and heating it in the presence of gaseous chromous chloride so as simultaneously to sinter the compact and to effect diffusion of chromium into the surface layers.  In one example of the method the compact is sintered at between 1000 DEG C. and 1200 DEG C. in a chamber through which is passed a mixture of gaseous chromous chloride and an inert or reducing gas preferably hydrogen.  If desired, the gaseous chromous chloride may be generated within the chamber by surrounding the compact with pieces of chromium or of a chromium compound and by passing gaseous hydrogen chloride through the chamber, preferably mixed with an inert or reducing gas.  A more uniform distribution of the gaseous chromous chloride may be obtained by including among the pieces of chromium or chromium compound, pieces of ceramic material capable of absorbing the gas and subsequently giving it up again.  The ceramic material may have been previously impregnated with chromous chloride.  In a further modification, the compact may be sintered in an inert or reducing atmosphere in the presence of pieces of chromium or a compound thereof and of the chloride of any metal other than an p  alkali metal or an alkaline earth metal.