baber/WOPTO huggingface dataset:
Patent GB-179929-A (GB)
Title: Improvements in automatic weighing machines
IPC: G01G13/00
Filed: 1922-05-06
Abstract: 179,929. Jagenberg-Werke Akt.-Ges. May 11, 1921, [Convention date]. Automatic-feed weighers.-In an automaticfeed weigher of the kind employing a weigh-pan which contains two equal and alternately operating compartments mounted on an horizontal axis, a stop lever pivoted above the pan on one of its suspension rods retains the compartments in their filling positions. by engaging a pair of stop pins projecting laterally from the pan, the release of the compartments after charging being effected by contact of the stop lever with a stationary abutment. The material from a supply hopper 22 passes down a fixed shoot 21 terminating in a feed-gate 23, and falls into a scale pan 5 divided into two compartments by a diagonal partition 6, Fig. 4. When sufficient material has entered the scale pan, the weighbeam displaces a catch 24, thus allowing the feedgate 23 to fall and cut off the feed. At the same time a stop lever 7, 9, Fig. 4, carried by one of the suspension rods 4 of the scale pan, is rocked by a stationary abutment 8, thereby withdrawing the arm 9 from beneath a stop pin 10 on the scale pan and allowing the scale pan to rotate and discharge its contents. The second compartment of the scale pan then occupies the filling position, the rotation being checked by contact of a projection 29 with a spring-pressed brake lever 12. The effect of the brake lever may be adjusted. Specification 193,858 is referred to.
Patent GB-898512-A (GB)
Title: Improvements in or relating to electric heating units
Inventor: ALTASS GEOFFREY WALTER
IPC: F24C7/04
Filed: 1960-04-11
Abstract: 898,512. Electric heating units. A. & R. ELECTRIC CO. Ltd. Dec. 20, 1960 [April 11, 1960], No. 12840/60. Class 39(3) An electric heating unit comprises a mounting plate 10 carrying at least one tubular heater formed by a helical resistance element 12 in a tube (e.g. glass) 14, and terminal carrying connection blocks 18 arranged on the plate 10 adjacent the ends of the tubular heater; a cable connection 19, capable of forming a power supply circuit between the blocks and means for connecting the ends of the heating tube to the adjacent blocks so that the two ends of the element are connected via the blocks to two wires of the supply circuit, is provided so that when the supply circuit is energized from a supply at one of the blocks, the element is in shunt across the supply and the supply is available at the other block. A plurality of such units may be arranged end to end and energized from a single mains supply cable extending to one of the blocks, each unit being in shunt across the supply. The heating tube preferably comprises a helical resistance wound on a glass rod or tube which is centrally located by end caps within the glass tube 14. Alternatively the wire is a free-standing helix extending between metal end.caps 17.
Patent GB-594832-A (GB)
Title: Improvements in and relating to the treatment of castings and other metal parts to render them non-porous
IPC: B22D31/00
Filed: 1945-05-23
Abstract: 594,832. Proofing metal castings. SYMMONS, A., and HITCHCOCK, N. E. F. May 23, 1945, No. 12849. [Class 140] Porous metal castings are immersed in a heated liquid substance or composition in which wax or wax-like material predominates, the immersion being continued to ensure that the material is absorbed into the pores of the metal so that when the metal is withdrawn and cooled the pores are sealed. The casting may be preheated to a temperature near that of the liquid bath and after removal may be kept at a temperature above or near the melting point of the treating material. Waxes specified are paraffin wax, ozoherite, ceresin, beeswax and carnauba wax. Solid fat may also be used alone or with these waxes. Bitumen, asphaltic bitumen, oxidation products of natural and synthetic rubbers, oils, benzene, petroleum spirit, plasticisers such as tri-cresyl phosphate and oleic acid, and ethyl acetate may be present in the composition. According to the Provisional Specification, bitumens, resins, synthetic rubbers and liquid fats may be used alone or together for treating the metal castings.
Patent GB-708105-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
Inventor: KELLER PATRICK ROBERT
IPC: H03F3/28
Filed: 1952-05-21
Abstract: 708,105. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 5, 1953 [May 21, 1952], No. 12892/52. Class 40 (6) In a class B push-pull screen grid valve amplifier in which the screens are fed through a common voltage-dropping resistance R1, the screen voltage is maintained constant by means of a variable shunt load comprising an auxiliary valve V3. The current in the valve V3 is varied in accordance with the signal level by means of a variable grid bias, which is derived from the signal over a rectifier D and a level adjuster, e.g. a potentiometer L. The arrangement may also be used to obtain over-compensation, i.e. a screen potential which rises with rising screen current.
Patent GB-1389488-A (GB)
Title: Racket grip
IPC: A63B49/08
Filed: 1972-03-20
Abstract: 1389488 Grips for rackets J DESLAGE 20 March 1972 [18 March 1971] 12954/72 Heading A6D A racket grip has a series of laterally arranged grooved imprints 4, 5, 6, 7 and 8 to accommodate the digits of a person's hand and defining between them a series of corresponding profiled rib portions which serve to provide position guides for consecutive digits of the hand, a groove 5 for the index finger extending substantially peripherally of the grip to groove 4 for the upper portion of the thumb and widening longitudinally of the grip as at 9 to accommodate the base portion of the thumb said groove being of a depth which provides between it and the upper end of the grip a radially thickened projecting portion 13 to act as a guard. In a second embodiment (Fig. 2, not shown) the grip is restricted to the upper part for the thumb and index finger only the lower lateral edge then being provided with a protruding portion (15) which is of sufficient length and height for engagement between the index finger and the second finger. The grip may be formed of a low-density metal or of plastics material with sufficient resistance so as not to warp under the holding stress. The grips can be fitted directly on a handle, or can be formed independently and attached e.g. by screw means, such that they assume a correct position in relation to a specific face of the racket.
Patent GB-1490669-A (GB)
Title: Velocity modulation electron discharge tube
IPC: H01J23/20
Filed: 1976-03-31
Abstract: 1490669 Klystrons NIPPON ELECTRIC CO Ltd 31 March 1976 [3 April 1975J 12994/76 Heading H1D A Klystron includes, in succession, an input cavity tuned to a frequency higher than the upper band edge of the operating pass band; a first prebuncher cavity tuned to a frequency lower than that of the input cavity and in the vicinity of the upper band edge; a second prebuncher cavity tuned to a frequency in the vicinity of the lower band edge; one or more buncher cavities tuned to a frequency higher than that of the input cavity; and an output cavity tuned to a frequency within the pass band, the Q value of the input cavity being lower than that of the first prebuncher cavity, and neither the second prebuncher cavity nor any of the buncher cavities being loaded by an external circuit. The arrangement is stated to improve the combined values of bandwidth and gain of the Klystron. As described, the Klystron includes two buncher cavities; the downstream one having the higher resonant frequency. The cavities are preferably provided with adjustable tuning means, and may be of distributed interaction type, with helical resonators.
Patent GB-220377-A (GB)
Title: Golf practising apparatus
IPC: A63B63/00
Filed: 1923-05-15
Abstract: 220,377. Smith, F. S. May 15, 1923. Outdoor games; golf-practising appliances.- Relates to golf-practising appliances of the type in which a shoot is arranged beneath an inclined table being adapted to guide a ball falling through a hole in the table into position to be replayed, and consists in positioning the hole on the longitudinal centre line of the table and curving the front edge of the table to form a tangential juncture with the floor upon which the table rests. In playing the game, a ball is driven along the floor with the object of causing it to ascend an inclined table 10 and enter a hole 20. The table 10 is covered with felt or similar material 14 and is curved at its front edge 10<a> to receive the ball. If the ball enters the hole 14 it passes down a shoot 21 and is returned to the player. Alternatively, if the ball misses the hole, the slope of the table is sufficient to return it. The hole 20 may be decreased in size by the insertion of one or more rings 20<c>, Fig. 10.
Patent GB-703840-A (GB)
Title: Improvements in or relating to dispensers for ice cream or the like
IPC: A23G9/28
Filed: 1950-05-24
Abstract: 703,840. Positive clutches. BERRY, T., and BERRY, S. May 28, 1951 [May 24, 1950], No. 13047/50. Class 80 (2) [Also in Group V] A dispenser for ice cream, mashed potato &c. of the type comprising a bowl 1, a pivoted ejector 14 carried by a spindle 5 having a pinion 6 meshing with a rack 7 on a quadrant pivoted at 8 on a stem 2, includes a clutch mechanism for disengaging the ejector from the rack at will, whereby the ejector can be freely rotated independently of the rack not only within but also outside the bowl, and the ejector can be readily cleaned. The pinion 6 is freely rotatable on the spindle 5, except when it is clutched to the spindle by means of a sleeve 10 having a slot 25 in which engages a projection 12 on the pinion, this sleeve being connected to the spindle by key 15 and keyway 26. The sleeve is normally held up in the engaged position shown in Fig. 2 by a spring 16. To disengage the sleeve a cam 20 is turned so that its end 19 forces down sleeve 10 against the resistance of the spring, whereby the key 15 is disengaged from its keyway and the slot 25 from the projection 12. In normal circumstances each operation of the rack to dispense a portion of ice cream actuates the driving member 23 of a counting mechanism 3, by means of a projection 22 on sleeve 10, but when the sleeve is disengaged actuation of the rack will not affect the counter. Specification 639,975, [Group V], is referred to.
Patent GB-912757-A (GB)
Title: Improvements relating to the polymerisation of olefines
IPC: C08F10/00
Filed: 1961-04-11
Abstract: Aluminium fluoride for use as a catalyst in the polymerization of olefines is activated by heating to a temperature of at least 120 DEG C. for at least one hour.  It may then be mixed with an aluminium trialkyl in which the alkyl groups contain 1 to 8 carbon atoms. Heating for one to 100 hours is usually adequate for the aluminium fluoride.  The heating may be performed in an inert atmosphere or in a vacuum or in air, but in the latter two cases the activated fluoride is transferred to an inert atmosphere, i.e. a dry non-oxidizing atmosphere, e.g. N2, while still at a temperature of at least 120 DEG C., prior to cooling and storage. Specification 478,601 is referred to.ALSO:Olefines are polymerized by treatment, in the presence of a solvent at a temperature between 20 DEG  and 100 DEG C. and a pressure between atmospheric and 100 p.s.i.g., with a catalyst of aluminium fluoride activated by heating to a temperature of at least 120 DEG C. for at least 1 hour (see Group III) and preferably, in addition also containing an aluminium trialkyl in which the alkyl groups contain 1 to 8 carbon atoms.  In general mole ratios of aluminium fluoride: aluminium trialkyl of 1:0,1 to 1:10 are used and the amount of catalyst used per gram of propylene is generally 0,001 to 10 g.  As a reaction medium substantially any inert material can be used which is liquid under the conditions of temperature and pressure used and which has a solvent action on the olefine. Preferably inert liquid hydrocarbons are used and these should be substantially free of materials that react with or deactivate the catalyst, e.g. H2O, O2, CO2, C2H2, NH3, ethers, ketones and similarly reactive organic compounds.  Suitable solvents include pentane, hexane, heptane, cyclohexane, octane, benzene, xylene, toluene and mixtures of two or more of these.  The aluminium trialkyl may be aluminium triethyl, trimethyl, tripropyl, triisopropyl, tributyl, triamyl, triisoamyl, trihexyl, triisohexyl, triheptyl or trioctyl. The invention can be applied to the production of other olefine polymers, including copolymers in which propylene is one component, and homo- and copolymers from other olefines for example butadiene, ethylene, butene-1 and styrene.  Specification 478,601 is referred to.
Patent GB-1236383-A (GB)
Title: Penicillanic acid esters, their preparation and their conversion into penicillins
Inventor: BAMBERG PETER
IPC: C07D499/00
Filed: 1968-03-18
Abstract: 1,236,383. Penicillin derivatives. AKTIEBOLAGET ASTRA. 4 Oct., 1968 [21 July, 1967; 18 March, 1968], Nos. 33734/67 and 13102/68. Heading C2A. Novel compounds of the general Formula (I) wherein R<SP>1</SP> is an unsubstituted or halo-, azido-, alkyl-, hydroxy-, alkoxy-, aryloxy-, acyloxy-, carboxy-, carbethoxy-, carboxamido-, mercapto-, alkylmercapto, nitro-, amino-, substituted amino-, or (alkyl- or aryl-) substituted sulphoxy-substituted aliphatic, cycloaliphatic, araliphatic, aromatic or heterocyclic acyl group, a triphenylmethyl, o-nitrophenylsulphenyl, or p - methoxy - o - nitrophenylsulphenyl radical and R<SP>2</SP> is a nitro- or halo-substituted benzyl or monocarboxylic arylsulphonyl ethyl group or, when R<SP>1</SP> is H, an acid addition salt thereof, and those compounds of the above general formula wherein R<SP>2</SP> is H, are prepared by acylating a compound of the general Formula (III) and if required, cleaving the ester linkage to give compounds wherein R<SP>2</SP> is H. The starting materials of general Formula (III) may be prepared by enzymatically or chemically cleaving a compound of the general Formula (IV) wherein R<SP>3</SP> is a monosubstituted acetyl group. The compounds of general Formula (IV) are prepared by esterifying the corresponding acid.
Patent GB-225782-A (GB)
Title: Automatic feeding device for polishing machines
IPC: B24B57/00
Filed: 1924-05-28
Abstract: 225,782. Soc. Anon. le Progres Industriel Namurois. March 25, 1924, [Convention date]. Supplying abrading-materials.-Abrading-material is automatically fed to the surface to be polished from a receptacle 1 having its bottom constituted by overlapping angle-irons 7 mounted on shafts or pivots 10, 11, 13 and rotated to open the bottom of the receptacle by an arm 18 on the vertical shaft 2 of the machine contacting with an arm 15 fixed to the shaft 13 of the central angle-iron. The shaft or pivots of the angle-irons are geared together and the angle-irons are kept normally in contact with the two end angle-irons engaging bevels 9 on the walls of the receptacle by a spring 28 connected to the receptacle and to an arm 29 projecting from the shaft 13; an arm 26 at the opposite end of the shalt 13 contacts with a fixed stop 27 on the receptacle when the angle-irons are closed. The shafts of the angleirons carry hooks 31 which agitate the abrading- material as the angle-irons are rocked.
Patent GB-549504-A (GB)
Title: Improvements in or relating to setting gauges for milling machine operations
IPC: B23C3/30
Filed: 1941-10-14
Abstract: 549,504. Milling; gauging-devices. LAMBOURNE, A. Oct. 14, 1941, No. 13212. [Class 83 (iii)] A setting gauge particularly for milling key ways, gear teeth or ratchet teeth comprises two V-grooves C, D perpendicular to each other and a testing face E parallel to both grooves. The gauge is placed with the groove C, Fig. 7, over the work piece G to be slotted at H and with the cutter K aligned along the groove D; the face E is set square to the table by a square J. The device may also have an extension F with a face F<SP>1</SP> lying in the same plane as the centre lines of the two grooves and serving to locate a cutter with one face set radially of the work. The face E may be shorter than that shown in Fig. 7 for use with work fixed close to the table.
Patent GB-132279-A (GB)
IPC: F41A9/83
Abstract: 132,279. Bennie, J., and Norman, G. Dec. 5, 1917. Cartridge magazines.-Relates to machines for filling Lewis gun magazines and of the type in which the feed movement of the pan relatively to the hopper is transmitted through the medium of the cartridges already placed in the pan. The invention consists in providing between the hopper and the magazine. a rotary feed-wheel having radial vanes between which the cartridges are received, in combination with a spring-pressed lever, oscillated by. each cartridge as it is delivered to the pan, to engage the grooves of the pan and act as a stop to prevent movement of the pan relatively to the hopper, except when the lever is displaced by a cartridge being delivered. In the form shown in Fig. 3, the hopper 2 carries the hand-operated rotary feed-wheel 5, the spigot 8 to which the centre block of the magazine is keyed, and the spring-pressed stop-lever, one end 142 of which lies in the path of the cartridges as they pass down the guide 10 into the magazine, and the other end 141 of which engages the usual grooves in the periphery of the pan. Modifications are described in which (1) the pan is used as a fixed base, the hopper rotating round the pan, and (2) the hopper is incorporated in a stand having an horizontal spigot to carry the magazine, the feed-wheel carrying a pulley for rotating it by power instead of by hand. Specifications 15220/15 and 117,908 are referred to.
Patent GB-313272-A (GB)
Title: Improvements in or relating to safety appliances for motion picture projecting machines
IPC: G03B21/18
Filed: 1928-05-04
Abstract: 313,272. Withers, J. S., (Sentry Safety Control Corporation). May 4, 1928. Kinematograph apparatus.-In a projector, a centrifugal switch having contacts urged inwardly by springs operates, upon reduction of speed of the mechanism, to complete a circuit causing a cut-off shutter to be released and the driving motor to be stopped. In the construction shown in Figs. 3 and 4, the switch comprises a gear 17, meshing with a gear on the shutter shaft, and secured to a sleeve 18 rotatable on a fixed shaft 12. The gear 17 is secured to a circular member 21, of insulating material, carrying a conducting ring 26 having two contact arms 28 pivoted to it. The arms 28 are urged into engagement with contact rings 39, 41 by leaf springs 32, secured to them at one end, and engaging eccentrics 33 which are carried by the member 21 and are adjustable to vary the spring pressure. The rings 39, 41 are carried by a flange 38 integral with a member 37 of insulating material which is forced on to the shaft 12. Terminals 44, 46, respectively secured to the ring 39, 41, are provided for the circuit leads. In a modification, Fig. 7, a saddle 87 secured to a gear 83 carries pivoted angular contacts 92 urged into engagement with fixed semicircular contact plates 73 by springs, the plates 73 being separately connected in circuit. The spring pressure may be varied by relative rotation of the shaft 12 and the casing 11, the hub 71 of the casing being threaded on to a threaded part of the shaft 12, and being normally held to it by a set screw. A further modification is described comprising angular contacts pivoted on a member carried by the gear, and pressed by springs as in the construction shown in Fig. 7, the pressure of the springs being adjustable by varying the separation, of the gear and casing by means of a screw provided for the purpose. Circuits for connecting the centrifugal switch and the shutter &c. are described in the Specification. Specifications 279,306, 291,946, 299,760, and 306,719 are referred to.
Patent GB-132442-A (GB)
IPC: H04L7/00
Abstract: 132,442. Automatic Telephone Manufacturing Co., and Harrison, H. H. Feb. 26, 1919. Type-printing telegraphs; duplex and multiplex telegraphs.-The contact-arms of transmitting and receiving distributors are driven intermittently by a single electric motor, the arm of the receiver being driven at a slightly higher speed than that of the distributor. The motors at two stations are synchronized by the use of a strobscopic indicator. Distributors. A motor M, the speed of which is controlled by a governor G1 drives the contactarm CBA1 of the receiver distributor RD through gearing P, G<1> and a friction clutch C', and the contact-arm CBA2 of the transmitter distributor TD through gearing P, G<2> and a friction clutch C<2>, the gearing being such that the arm CBA1 revolves about 5 per cent faster than the arm CBA2. Intermittent rotation of the arms CBA1, CBA2 is obtained by means of latches L', L<2> and magnets RM1, RM2, the circuits of which are controlled in the manner described in Specification 121,914. Synchronizing. To synchronize the motors at two stations, the distributor TD at one station is allowed to run continuously to energize periodically a polarized relay at the other station controlling a lamp illuminating a disk provided with black and white sectors mounted upon the face of the wheel G<2>, so that when the disk appears to be stationary, the two motors are in synchronism.
Patent GB-913398-A (GB)
Title: Industrial trucks
IPC: B62B3/06
Filed: 1961-04-13
Abstract: 913,398. Castors. YALE & TOWNE MANUFACTURING CO. April 13, 1961 [May 12, 1960], No. 13286/61. Class 52 (1). A castor has wheels 18 mounted, for tilting movement about an axis Z-Z by means of a wheel support 19 having integral shaft portions 20, 21 journalled in bearings 22, 23 carried in arms 24, 25 of a fork member 26 having a vertical shaft portion 27 journalled in bearings 29 carried by the leg 12 of a truck. In a modification, Fig. 5, a single wheel 40 is mounted between flanges 41, 42. Specifications 809,554 and 880,057 are referred to.
Patent GB-132890-A (GB)
IPC: A43D8/00
Abstract: 132,890. Ramsay, J. Sept. 27, 1918. Uppers, machines for.-An apparatus for block. ing, crimping, or shaping leather, particularly for boot uppers, comprises blocking-mean.s E working between movably supported jaws G with straight or curved edges or pronles and projections e forming recesses immediately behind these edges for the reception of co-operating retarders N' adapted to clamp the leather on top of the jaws to prevent wrinkling. The jaws may be adjusted towards each other by lock-nuts d<1> and can yield apart against springs b. The retarders N' are carried by plates N pressed down by springs Q, the compression being adjusted by a hand-wheel. The plates N can yield outwardly against springs F. Fig. 9 shows a modified form of jaws and block for shaping toe portions. The block H is secured to the blade E, and correspondingly curved jaws G and retarders are substituted for those shown in Fig. 3.
Patent GB-133026-A (GB)
IPC: H05B3/66
Abstract: 133,026. Collins, E. F. Sept. 21, 1918, [Convention date]. Resistance furnaces.-The heating-element for a furnace for heating large objects such as guns and engine-shafts consists of resistance strip wound around insulators carried by segmental frames mounted at different heights on the inner wall. As shown in Figs. 1 and 3, the strip 7 is wound around insulating spools 13 preferably of alundum, threaded on bolts between frames 11, 12 which are bolted to columns 5 built into a fire-brick lining 4. The furnace is preferably of circular shape with an outer metal shell 2, a brick wall 1, and an interposed layer 3 of pulverulent heat-insulating material. Insulated leads 16 pass through the wall. The strip is made of an alloy containing 64 to 65 parts of nickel, 18 to 22 parts of chromium, 10 to 16 parts of iron, and 1 to 2 parts of manganese. In the modification shown in Fig. 6, the columns 5<1>, embedded in the furnace lining, are U-shaped with bridges 8 to which the frames are bolted. The turns of the strip 7 may be spaced by notched insulators 25, Fig. 8, with rectangular blocks 26 fitting into the notches. A cover 21 has a central aperture 23 for a chain supporting the work.