baber/WOPTO huggingface dataset:
Patent GB-613586-A (GB)
Title: Improvements in or relating to blasting cartridge containers
IPC: F42B3/02
Filed: 1946-06-19
Abstract: 613,586. Blasting-cartridges. ASHCROFT, D. G., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 19, 1946, No. 18408. [Class 9 (i)] Relates to metal containers for blasting-cartridges used to build up a columnar charge by assembling the containers end to end. Containers having forward male and rearward female portions are provided with inwardly projecting tongues in the rearward portion which hold the cartridge on the seating formed at the forward end and further tongues engaging, with the obstruction. on the forward portion of an. adjoining container to lock the assembled containers together. The tongues 4 and 5 are stamped out of a sheet of tinned iron and the sheet rolled into a tube 1, the overlap being seamed. Into the forward portion of the tube 1 is inserted a metal cup 3 having a base of reduced diameter from which a hole is punched out, the cup 3, being fitted within a cup 6 also having a hole in its base. Protuberances 7 are provided on the cup 3 to prevent relative rotation of the containers after assembly. The base of the cup 3 forms a seating for an inserted cartridge and the tongues 5 are bent inwards over the cartridge to hold it in position. When the forward portion of a container is inserted in the rear portion 2 of a second container the tongues 4 fit between the cup-6 and the cup 3 to prevent the containers being pulled apart.
Patent GB-1484543-A (GB)
Title: Process for the preparation of a frost resistant concrete or mortar
IPC: C04B28/02
Filed: 1976-05-05
Abstract: 1484543 Frost-resistant concrete or mortar AKZO NV 5 May 1976 [12 May 1975] 18470/76 Heading C1H Frost-resistant concrete or mortar is prepared by incorporating into a fresh concrete or mortar mixture, which is subsequently allowed to cure, gas-filled spheres of a synthetic polymer which is inert under the curing conditions, the spheres having a diameter of 10 to 100 microns and being added in an amount of 0À01 to 0À1% calculated on the weight of the dry cement. The spheres may comprise a polymer or copolymer of ethylene, propylene, methylmethacrylate, o-chlorostyrene, vinyl chloride, vinylidene chloride, acrylonitrile or styrene, e.g. a copolymer of vinylidene chloride and acrylonitrile or a copolymer of vinyl chloride and vinylidene chloride. The spheres may be incorporated into the mixture in the form of a wet composition, e.g. 8 wt. per cent spheres, 13 wt. per cent sodium gluconate and 79 wt. per cent water.
Patent GB-824325-A (GB)
Title: X-ray apparatus having means for ascertaining the temperature of the anode of the x-ray tube
IPC: H05G1/54
Filed: 1956-06-15
Abstract: 824,325. Measuring radiation. OPPELT, J. June 15, 1956, No. 18600/56. Class 40 (3). In order to ascertain the instantaneous temperature of the anode of an X-ray tube 1, an ionisation chamber 2 is exposed to the X-ray beam and the resulting ionisation current passed to a resistor-capacitor network RC whose timeconstant equals the time-constant of cooling of the anode. The instantaneous voltage E across the network thereby indicates the instantaneous temperature of the anode irrespective of whether the tube is operated continuously or switched on and off to make a succession of exposures. The voltage E may simply furnish an indication of temperature, or may be employed to trigger a discharge tube, Figs. 2 and 3 (not shown), when it exceeds a critical level and thereby operate a relay which controls a signal or switches off the X-ray tube. The timeconstant of cooling of the anode depends on both its construction and manner of support and the resistor-capacitor network employed in practice, Fig. 4 (not shown), consists of several series and parallel branches. Non-linear resistors may be employed. Networks corresponding to different types of X-ray tubes may be formed as units which can be connected in the ionisation chamber circuit as required.
Patent GB-225795-A (GB)
Title: Improvements in and relating to folding tables
Filed: 1924-08-05
Abstract: 225,795. Buffington, C. A. Aug. 5, 1924. Folding and collapsable tables; table frames; table tops.-A folding table comprises a frame 3, legs 9 pivoted to the frame, springs 11 coiled about the pivots of the legs and adapted to move the legs 9 to a folding position and yieldingly retain them. The bars of the frame are rabbeted at their inner upper corners and a top 1 is seated in the rabbet, and angle strips 30 permanently connected to the top 1 have pendent portions at the inner side of the frame, detachably connected thereto by beads 32. The legs are moved to the extended position by flexible steel strips 17 passing round rollers which are rotated by means of a lever 21 flexibly connected to the rollers 16 and extending through a slot 20 in the table frame. The legs are retained in the extended position by a movable latch 25 on the frame which detachably engages the lever.
Patent GB-384599-A (GB)
Title: Improvements in packing for wrapping up sides of pork and the like
IPC: B65D75/14
Filed: 1932-07-01
Abstract: 384,599. Wrapping meat. FLEISCHER, P. E., 2, Strandgade, Roskilde, Denmark. July 1, 1932, No. 18704. [Classes 94 (i) and 94 (ii).] To facilitate the wrapping of sides of pork &c., a sheet 1 of hessian or the like is bent up at 2, and endpieces 3 are sewn in the angles thus formed. The meat &c. is placed in the angle of the parts 1, 2 and the loose edge is carried up over the contents and secured by tightening twine 5 which has been disposed in holes 4. The remainder of the twine is used to sew the part 1 to the top edges of the parts 2, 3. In a modified form, shown flattened in Fig. 5, the end-pieces 6, 7 are arranged at diagonally opposite corners of the sheet 1 so that two upstanding pieces 2a, 2b may be formed. The wrappers may be lined with gauze, oiled paper, or the like.
Patent GB-514085-A (GB)
Title: Improvements in dart flights
IPC: F42B6/06
Filed: 1939-02-18
Abstract: 514,085. Darts. SHILSTON, L. E., and SHILSTON, H. E. Feb. 18, 1939, No. 18730. Divided out of 514,079. [Class 132 (iii) ] In a dart flight composed of a pair of light rigid laminar half-flights, Figs. 1 and 2, slit to interfit crosswise as described in Specification 496.381, one or each half-flight is provided with one or more pairs of projections x, y located on each side of a line in continuation of the slit and so spaced as to provide a sliding fit for the complementary half-flights. The halfflights are stamped from sheets of aluminium or other light material and, to enable a single set of dies to be used, the two. half-flights of each pair may be identical and symmetrical about an axis passing at right angles to, and through the inner end of the slit. The trailing edge of the flight may be indented or pointed, and the projections x, y may be elongated or stud-shaped. Specification 514,079 also is referred to.
Patent GB-729697-A (GB)
Title: Apparatus for separating mixtures of particles into fractions according to specific gravity
IPC: B03B5/36
Filed: 1953-07-06
Abstract: 729,697. Washing granular material; sink- and-float apparatus. STAMICARBON N.V., [formerly MAATSCHAPPIJ VOOR KALENBEWERKING STAMICARBON N.V.]. July 6, 1953 [July 7, 1952], No. 18730/53. Class' 82 (2). " Sink-and-float " separation apparatus comprises a wash-box having two compartments in communication with each other through an opening at the bottom region of the box, one compartment being adapted to be fed at one side with raw material and having a discharge device for floats from the opposite side of the compartment and a worm conveyer for moving particles transversely of the direction of travel of the float particles and through the opening into the other compartment, and the said other compartment having a device for raising and discharging therefrom, in the same general direction as the float discharge, the settled particles supplied thereto by the worm conveyer. The material to be separated is fed into the separation compartment 1 through a feed trough 3 and there separates in the heavy medium. A worm conveyer 5 and paddle-wheel 6 are both mounted on spindle 4 and the paddle serves to transport the floats to a second paddle 8 driven by a chain 10. The blades of this paddle project into the spirals of the worm 5 and expel the floating particles via a discharge trough 11. The settled particles are pushed under partition walls 12 into a compartment 14 and discharged at 16 by a paddle-wheel 15. The paddle 6 and worm 5 may be driven separately at different speeds to speed up the discharge of the light fraction, and the partition 12 moved about a pivot to allow adjustment of the working to suit the material supplied to the box.
Patent GB-627298-A (GB)
Title: Plasticized ethyl cellulose and methods of making the same
IPC: C07C51/00
Filed: 1946-06-21
Abstract: Ethyl cellulose compositions are plasticized with a liquid or solid dimer or liquid trimer of alpha-methyl-para-methyl styrene or a hydrogenated liquid dimer of alpha-methyl-para-methyl styrene in which only the normally unsaturated side chain of the dimer is completely saturated with hydrogen.  The ethyl cellulose may have an ethoxy content of 43.5 to 50 per cent.  The plasticizer may be present to the extent of 2 to 60 per cent based on the weight of the ethyl cellulose, but is preferably used in proportions of 20-40 per cent.  Such compositions have good flexibility at low temperature, resistance to heat, tensile strength, and impact strength.  The mixture of ethyl cellulose and plasticizer may be heated until solution or dispersion takes place and the plasticized composition may then be cooled.  In an example, ethyl cellulose and trimeric alpha-methyl-para-methyl styrene are mixed and heated to 300-350 DEG F. until a uniform mass is obtained.  The composition then placed in pans or calendered or milled, and then cooled to room temperature. It may then be comminuted to form a moulding powder.  Specifications 586,090, 606,085, 613,219, [both in Group IV (b)], and 617,342 are referred to.
Patent GB-468992-A (GB)
Title: Improvements in or relating to float-operated valves for allowing intermittent supply of liquid
IPC: F16K31/18
Filed: 1936-07-06
Abstract: 468,992. Ball and float valves. LUND, H.H.B. July 6, 1936, No. 18748. [Class 135] A float-actuated valve device particularly adapted for intermittently supplying fertilizer liquid to the trays of a soil-less cultivation cabinet for the germination of seeds is adapted to open and close with a snap action. The bifurcated arm 5 of the actuating float is mounted on a pivot 4 passing through the ears 3 of a stand 2. The valve 17 which co-operates with a seat 18 is suspended by a chain 16 from one end of a lever 9 also mounted on the pivot 4. An eyebolt 20 is pivoted to the other end of the lever 9 and slidably engages a plate 8 pivoted between the arms of the lever 5. A weighted arm 18<a> is secured to the lever 9 between the pivot 4 and the eyebolt and a compression spring is arranged between the plate 8 and the shoulder formed by the head on the eyebolt. As the water level rises, the spring is gradually compressed reaching a maximum compression when the float arm and lever are in line. Beyond this point the spring tends to move the lever against the action of the weighted arm. At a certain point, the movement exerted by the spring is sufficient to overcome the weighted arm causing the lever to move rapidly to its valve opening position. The weighted arm now bends to hold the lever in its new position. Specification 472,873 is referred to.
Patent GB-446795-A (GB)
Title: Improvements relating to the repair and anchorage of telegraph poles and the like
IPC: E04H12/34
Filed: 1935-07-01
Abstract: 446,795. Repairing posts. McMAHON, B., 27, Avenel Road, Malvern, Victoria, Australia. July 1, 1935, No. 18802. [Class 20 (i)] A method of repairing posts consists in supporting the upper part of the post by means of a temporary lifting device, severing the post near the ground level, removing the stump, and substituting therefor a metal base to which the pole is connected. A temporary framework 2 is erected near to the post which is supported on the framework by pulley gear 7, and the post is severed at 12, the old stump 3a being removed. A metal pedestal comprising base 17, ribs 18, pillar 16 and sliding sleeve 19 is then positioned beneath the suspended post and resilient material 23 is interposed between the post and the pillar. The sleeve is then slid upwards to receive the post to which it is secured by bolts 21. The lower end of the post may be reduced in diameter to provide a drip edge 3c over the upper end of the sleeve.
Patent GB-1069446-A (GB)
Title: Vapour phase oxidation of isopropanol
Inventor: FETTIS GORDON CHEYNE
IPC: C07C57/05
Filed: 1964-05-06
Abstract: A process for the manufacture of acrolein and/or acrylic acid comprises interacting isopropanol and oxygen in the vapour phase at an elevated temperature in the presence of an oxidation catalyst comprising molybdenum, tellurium and oxygen, particularly one comprising molybdenum, tellurium, phosphorus and oxygen or one additionally containing nickel. The reaction mixture may also contain propene.
Patent GB-1418573-A (GB)
Title: Ac motor and control circuit
IPC: H02P27/04
Filed: 1973-04-19
Abstract: 1418573 Control of electric motors H FORSSELL 19 April 1973 [21 April 1972] 18920/73 Heading H2J A polyphase A.C. motor M is energized by a control circuit comprising a static converter 1 which includes controlled rectifiers commutated in dependence on the amplitude of flux in the motor. A step switch 3, which may be a ring counter, receives inputs from a pulse generator 2 and provides outputs for commutating the converter rectifiers in the desired sequence. The step switch 3 is stepped on by a digital output discriminator 7 whenever the amplitude of flux in any direction in the motor exceeds a reference value set by a potentiometer 6. The flux sensor 4 may comprise Hall plates but in a preferred embodiment comprises a circuit producing an output indicative of the growth of magnetizing current in the motor and hence of the growth of flux. This circuit comprises reactances 11, Fig. 2, so chosen that the growth of current in them corresponds to the growth of current in the motor windings, the reactances being connected to the supply voltage through resistances 10 and current transformers 9 which compensate for the resistive drop in the motor windings. The growth of current in reactances 11 is monitored by current transformers 12 feeding a diode bridge 13 which in turn feeds to the summation device 5 the signal indicative of flux amplitude. The converter 1 is also controlled by a current regulator 17 connected to a diode bridge 16 supplied from additional windings in current transformers 9. Speed and/or torque control may be achieved by altering resistances 14, 15 associated with reactances 11 and current transformers 12, or by altering the setting of potentiometer 6, or by altering the output of a device 40 which may be used to feed a speed indicative signal from tachogenerator T to the summation device 5. Alternatively, current regulator 17 may be controlled by a device 41 which compares the tachogenerator output with a reference value set by potentiometer 42. Variation of the potentiometer setting alters the motor speed. The control circuit may also be operated to provide regenerative braking.
Patent GB-530199-A (GB)
Title: Improvements in or relating to electric circuit interrupters having arc extinguishingstructures
IPC: H01H9/34
Filed: 1939-06-30
Abstract: 530,199. Arc-rupturing in switches. WESTING- HOUSE ELECTRIC INTERNATIONAL CO. June 30, 1939, No. ,19045. Convention date, July 1, 1938. [Class 38 (v)] An arc-extinguishing structure of the deion " type employs insulating plates, preferably of the non-gas evolving type, which are provided with aligned slots 45 tapering upwards, in which the arc is drawn and blown upwards by magnetic plates 47 arranged in pairs as spacers between the insulating plates. In the group X, Fig. 2, the insulating plate 43 has a rounded cutaway edge to each side of the slot 45 so as to fit over the fixed contact. Fig. 1 (not shown). The next insulating plate 49 is shorter, so as to accommodate a cross-magnetic plate 51, whereas the next and following insulating plates 53 have smooth slot-edges as in Fig. 3. The structure is closed below by plates 79 and at the sides by plates 63, and bars 67 retain the cross-plates 51 in position. A front support 41 and cover 71 are provided. as also a back plate 39 suitably cut away at 77 registering with a support on the switch base (not shown). The Specification gives suitable thicknesses for the various plates and suitable shapes for the slot-edges, and also specifies dimensions for the cross-section of the vents to atmosphere formed by the magnetic plates. Modifications in details are also described and illustrated, Figs. 6- 13 (not shown).
Patent GB-1421877-A (GB)
Title: Flow measuring apparatus having a colourimetric urine indicator
IPC: G01F1/52
Filed: 1974-05-01
Abstract: 1421877 Detection of urine level; measuring fluid-flow KENDALL CO 1 May 1974 [14 May 1973] 19138/74 Headings G1B and G1R Apparatus for measuring the approximate peak flow-rate of urine discharge comprises a vessel 22 having an inlet to receive the discharge and an outlet, a compartment 28 for passage of the urine, the level of the urine in the compartment rising with the rate of urine discharge into the vessel, and within the compartment an indicator 62 providing a colour change in the presence of urine and positioned to be wetted by the urine to an extent determined by the maximum level of urine in the compartment, the indicator comprising an absorbent carrier bearing an indicating chemical which undergoes an irreversible colour change on exposure to one or more of the ions present in urine, the indicator shown having indicia 66 calibrated to read volume and/or height. The apparatus generally comprises vessel 22 and container 24 which may be detachable, vessel 22 being divided into compartment 28 and channel 30 by upright wall 26, the lower end of compartment 28 being closed by bottom wall 31. In use, urine discharged into compartment 28 fills the lower part of the compartment then flows through vertical slot 52 in wall 26 into channel 30 and passes into container 24, compartment 28 holding its maximum amount of urine when the rate of flow of urine into the compartment is at its greatest. Slot 52 is protected by shield 54 from urine flowing into compartment 28. The indicator strip may comprise an absorbent carrier of paper or cardboard, impregnated, coated or printed with a chemical undergoing an irreversible colour change on exposure to ions present in urine, the strip optionally being fixed to a plastics film or metal strip. The chemical may be silver chromate,  dichromate, phosphate, carbonate, oxide, per-  borate, periodate or fluoride (all responding to the presence of chloride ions) or sodium cobalti-nitrite (responsive to the presence of potassium ions). Silver chromate may be used when the strip is to be packaged and sold for use in apparatus to be sterilized with ethylene oxide.
Patent GB-705992-A (GB)
Title: Improvements in or relating to rules, more particularly for ruling lines on paper
IPC: B43K23/012
Filed: 1952-07-29
Abstract: 705,992. Rulers. ELLISON, P. A. July 29, 1952 [Jan. 12, 1952], No. 19175/52. Class 97(3) [Also in Group VII] A drawing ruler 1 has a rolled-over or bevelled portion 2a with a straightedge 2 and is integral with or attached to a resilient clip on a tubular sleeve 5 fitting around a finger of the hand which is to use the ruler. Extension rods (not shown) may be screwed to the ruler or may form a telescopic combination with the portion 2a.
Patent GB-1004894-A (GB)
Title: Automatic pistol
IPC: F41G1/16
Filed: 1964-05-08
Abstract: 1,004,894. Automatic pistols. HECKLER & KOCH G.m.b.H. May 8, 1964 [May 8, 1963], No. 19231/64. Heading F3C. An automatic pistol comprises a grip member 2, a breech carrier 1 slidably movable thereon, a separately produced breech head 9, a striker pin 12 guided in the breech head, a barrel assembly 3 fixedly attached to the grip member, means to feed the cartridges in succession to the barrel and a trigger released hammer 13 operable upon the pin 12. The carrier 1 is formed of a U-shaped steel sheet the lower edges of which are slidably guided in grooves in the member 2. The carrier has a holder member 7 welded thereto to which is attached by means of a screw 8 the breech head 9. The breech head when attached, holds in place the back sight 11 which is slidably received in a dovetail transverse groove. The barrel 3 has a lip which engages in a recess 4 of the grip member and is releasably held therein by a pivoted holder 5 having a roughened surface 26 for manipulation. The barrel and breech head can thus be easily changed so that the pistol can be used with different calibre ammunition.
Patent GB-640521-A (GB)
Title: Improvements in cooler systems for generator electric locomotives
IPC: F01P5/04
Filed: 1947-07-18
Abstract: 640,521. Automatic, temperature control systems. GENERAL MOTORS CORPORA.- TION. July 18, 1947, No. 19250. Convention date, Oct. 5, 1945. [Class.38 (iv)] A cooler system for a generator electric locomotive having an engine with radiators through which an engine coolant is circulated, comprises an engine-driven alternator interconnected with a plurality of induction motors adapted to drive fans for the respective radiators. A sequential start-up of the fan motors as the coolant temperature rises above a predetermined minimum, and a simultaneous shut-down of the fan motors as the coolant temperature falls below the minimum is caused by relaycontrolled switches under the control of a coolant-temperature responsive device. The electric locomotive comprises a power-generating unit including an internal-combustion engine 5 (Fig. 1) connected to a traction generator 7 in turn connected to a three-phase alternator 9 for supplying power at frequencies proportional to the engine speed to four induction motors Ml-M4 driving cooling fans 29. The motors draw air through shutter vanes 37 (Fig. 2), and engine cooling radiators 25, and expel the air through air exhaust stacks 27 in the roof of the locomotive. The shutter vanes are controlled by an electric pneumatic shutter valve 43 (Fig. 4) included in a control circuit together with a temperature switch 77 responsive to the temperature of the water circulating in the radiators and which includes a thermally-expansible element 95 secured at one end to a stationary member 96 and at the other end to a stepped contact 97 adapted to engage successively fixed contacts 101, 103, 105, 106, 107 and 108. If the temperature of the cooling water reaches a given value slightly below the minimum value for which cooling is applied, the bar 97 engages the contact 101, thus setting up a holding circuit for the winding of a current relay 81. If the temperature of the cooling water further increases to the minimum value, the bar 97 engages the contact 103, thus energizing the relay 81 which in turn completes a circuit through the windings of two sequence relays, 83, 85, and energizes the valve 43 causing the shutters 37 to open. A holding circuit is also made ready for the motor contactors 87, 89, 91 and 93. Further increases in temperature cause contacts 105-108 to be engaged successively by the bar 97, causing successive energization of fan motors M4, M2, M3 and M1, respectively. Due to the holding circuits of the various relays all the motors continue to operate until the temperature of the cooling water falls below the minimum when the relay 81 is released, causing the motors to shut down simultaneously. The sequence relays 83, 85 are adapted on release to be rocked so that the next time the temperature rises the fan motors are operated in the reverse sequence to ensure even wear.