baber/WOPTO huggingface dataset:
Patent GB-158119-A (GB)
Title: Improvements in helved hammers
IPC: B21J7/10
Filed: 1919-11-08
Abstract: 158,119. Jensen, J. J. Nov. 8, 1919. Power hammers.-A helved hammer 27 is carried by a frame 6 capable of movement along and rotation about a vertical driving-shaft 3, and the helve 28 itself is capable of axial movement and rotation so that either pane or an edge of the head may strike a blow upon the work &c. at different heights and positions around the machine. The helve is supported in a bearing 26 of a plate spring 25 forming one arm of a bell-crank pivoted to the frame at 21, the other arm being engaged by springs 32, 34 and having a roller adapted to be engaged by the cam 18. This cam. is driven by bevel and spur gears 11, 14 from the shaft 3 and can be raised by link-work 36, 38, 39 to vary the force of the blow or moved axially by treadleoperated mechanism to bring a disc 17 below the roller, thereby stopping the hammer. The frame 6 may be rotated on the pillar 1 or moved vertically by link-work 57, 59. The helve 28 has rings 48, 49 fixed thereon and engaged by a fork 50 which is operated by a lever 54 to move the helve axially, and it is connected by a universal joint 29 to a squared shaft 42 having a sliding gear 43 which can be rotated from the handle 47 to rotate the helve on its own axis.
Patent GB-671649-A (GB)
Title: Improvements in electromagnetic induction devices such as synchro units or alternating current motor or generators
IPC: H02K24/00
Filed: 1947-10-24
Abstract: 671,649. Dynamo-electric machines. BENDIX AVIATION CORPORATION, and CLEVELAND, F. J. (Bendix Aviation Corporation). Nov. 24, 1948 [Oct. 24, 1947], No. 27733/48. Divided out of 671,636. [A Specification was laid open to inspection under Sect. 91 of the Acts, Oct. 24, 1947.] Drawings to Specification. Class 35. One element of a rotary or reciprocating machine has a three-phase star connected winding in three or a multiple of three slots and up to twenty dummy slots are provided between each pair of wound slots, all the slots being equally spaced from one another, the other element having skewed salient poles. Specifications 469,026, 537,514, and 671,632 are referred to.
Patent GB-1268546-A (GB)
Title: Method and apparatus for the determination of the short-circuit current that would flow upon occurence of a short circuit in three-phase electrical supply networks
IPC: G01R29/16
Filed: 1969-06-02
Abstract: 1,268,546. Measuring characteristics of polyphase networks. ASSOCIATION LYONNAISE DES PROPRIETAIRES D'APPAREILS A VAPEUR ET ELECTRIQUES. June 2, 1969 [Oct. 24, 1968], No. 27801/69. Heading G1U. To determine the short circuit current that would flow on occurrence of a short circuit between any two or all three phases of a three-phase network 2, an unbalancing load 2 is connected between two of the phases and measurements are made of the current in this load and of the negative phase sequence component of the network voltage, from which measurements the required short circuit current may be evaluated according to formulae given in the Specification. To determine the current that would flow on occurrence of a short circuit between one phase and neutral 3, an unbalancing load is connected between one phase and neutral and measurements are made of the load current and negative sequence voltage component, as above, and also of the zero sequence component, from which measurements again the required short-circuit current may be evaluated. Preferably in the latter case, the sum of the negative sequence component plus half the zero sequence component is determined directly, since the appropriate formula requires the evaluation of this sum. Apparatus for carrying out the above measurements comprises an unbalancing resistive load Z in series with ammeter 5 and connectible, by means of switches 4, 14, either between two phases or between one phase and neutral. Detectors 6, 7, transformer-coupled to the network provide outputs proportional to the negative phase sequence and zero phase sequence components respectively. A switch 16, ganged to switch 4, selects either the output of detector 6 alone or the combination of the outputs of detectors 6 and 7, according to the measurements to be made, the output of switch 16 being passed via harmonic suppressor 8 and amplifier 9 to a meter 11. A voltage divider 12 is connected between two phases of the network to provide a known calibrating voltage, which may be selected by switch 13 in order to calibrate meter 11, the calibration being altered according to the type of short circuit to be investigated. To compensate for any unbalance in an existing load of the network before switch 14 is closed, a correcting device 15 is provided, which produces an output adjustable in amplitude and phase, enabling the meter reading to be brought to zero initially.
Patent GB-676315-A (GB)
Title: Improvements in or relating to translucent cinematograph projection screens
Inventor: BOWDEN BERTRAM VIVIAN
IPC: G03B21/62
Filed: 1949-10-31
Abstract: 676,315. Projection screens. RANK PRODUCTIONS, Ltd., J. A. Oct. 31, 1950 [Oct. 31, 1949], No. 27812/49. Class 97 (i). A rear projection screen consists of a layer of transparent or translucent plastic material loaded with ground glass. The glass has a refractive index between 1.5 and 1.8, preferably 1.65, is ground to pass through a 200-mesh screen and is used in a quantity between 0.015 and 0.04, preferably 0.025 lb. per square foot of screen. The preferred plastic is ethyl cellulose. It is mixed with thinners to which the glass has been added and sprayed on to a plaster surface and subsequently stripped. The plaster layer is previously prepared by coating with gelatine solution, reheated after spraying to melt it and cause penetration. Successive sprayings are used as necessary. The gelatine may be hardened with formaldehyde. In spraying the screen, layers of plain plastic may be applied before and after that of the loaded layer, successive sprayings being used at each stage to build up the necessary thickness. A dyed layer of plastic or lacquer may be applied instead of a plain outer layer. Two loaded layers, each with a plain layer on one side only, may be stuck together, with their plain faces in contact, or suspended thus without sticking. Fabric reinforcement may be incorporated into the screen margins between the sprayings so as to be buried.
Patent GB-284783-A (GB)
Title: Improvements in nut tapping machines
IPC: B23G1/18
Filed: 1926-11-05
Abstract: 284,783. Spies, P. H. F., and Bliemeister, L. P. Nov. 5, 1926. Tapping; taps; sockets.-In a nut tapping machine the nut blanks pass through a sleeve coaxial with and surrounding the tap, the sleeve having longitudinal inserted projecting portions spaced apart to engage the corners of the blanks and prevent relative rotation thereof, The body 12 of the machine is adjustably secured by a slide 11 and bolt 15 to a support 10 which is preferably a lathe, shaping-machine or other machine in which the blanks are formed, the latter being fed automatically one at a time to the guiding sleeves 40 by means such as a pivoting conveying arm. A fixed arm 58, Fig. 3, serves as a stop for the conveying arm (not shown) and to position the blanks. The tap 55 is. non-rotatably mounted in the sleeve 40 formed integral with a gear 41 rotated by a parallel belt-driven shaft 36, Fig. 4. The front of the sleeve is provided with a pin 49 which coacts with a groove 50, 51, Fig. 9, in a short sleeve 42 knurled at 48 so that it may be disengaged readily, the sleeve 42 having a number of removable axial pins 63, Fig. 3, which project partly into the bore of the sleeve so as to engage the flat sides of the blanks and rotate them on the tap. Three pins are provided for hexagon nuts and the remaining spaces between the blanks and the sleeve allow cuttings to be washed away by oil. Immediately behind the sleeve 40 is a nut guide embracing the curved portion of the tap shank. The guide is formed by two members 19, 20, Figs. 3 and 4, the former being transversely adjustable on the body 12 and locked by a bolt 17 while the latter is transversely adjustable on the former to vary the width of the groove 21 to suit different sizes of nuts, locking being effected by a bolt 31. The straight portion 23 of the guide groove remains the same width during adjustment and is designed to fit the largest nuts dealt with by the machine. A cover 65 encloses the gearing 41 and has a central aperture 66 through which project the hub of the gear and the end of the guide sleeve.
Patent GB-776912-A (GB)
Title: Improvements in or relating to delay devices
IPC: H03K5/13
Filed: 1955-09-30
Abstract: 776,912. Radio navigation. STANDARD TELEPHONES & CABLES, Ltd. Sept. 30, 1955 [Oct. 4, 1954], No. 27896/55. Class 40(7) In an arrangement for subjecting a 400 Ás recurrence period pulse train to a continuously selectable delay, two 400 Ás recurrence period pulse trains A and B, Fig. 2 relatively displaced by 200 Ás are applied respectively to phantastron delay circuits 3 and 4 controlled by ganged potentiometers 7 and 8 operated by a shaft S such that the deviations of the output pulses C and D, Fig. 2, produced by phantastrons 3 and 4 depends on the setting of shaft S as shown in Fig. 3. The output pulses C and D are differentiated at 5 and 6 to give corresponding delayed pulse trains E and F and the pulse train having a delay within the limits 15-215 Ás is selected by an eletronic switch controlled by a switch 9 actuated by a cam 11 controlled by shaft S so that as the shaft S is rotated the output is selected alternatively from pulse trains E and F, the changeover being effected during the period when said pulse trains are coincident as shown in Fig. 3. The delay of the resultant output 400 Ás recurrence period pulse train G thus varies continuously with the setting of shaft S. Alternatively the two potentiometers 7 and 8 may be replaced by a single potentiometer having a double wipe. The invention is described as producing the fine delay in a Loran receiver set to a system recurrence frequency of 25 c/s. A 100kc/s. output from. a master oscillator (not shown) is applied to a frequency divider 1 to give (1) a 5 kc/s. pulse train which triggers a bistable Circuit 2 giving the A and B inputs to phantastrons 3 and 4 and (2) a 25 c/s. pulse train which triggers a coarse phantastron delay 14 giving an output pulse H where duration is variable within the limits 0-16,000 Ás by means of a potentiometer 15 coupled to shaft S through a 40:1 gearing. The output pulse H is differentiated at 17 and the resultant delayed pulse triggers a bistable circuit 16 to to initiate a pulse I which is terminated by the next succeeding pulse P in the pulse train G, the pulse J derived by differentiating I being applied to the indicator. The delay of pulse J is thus determined by the combination of the fine and coarse phantastron delays.
Patent GB-430954-A (GB)
Title: Improvements in the manufacture and production of quinones
Filed: 1934-09-29
Abstract: <FORM:0430954/IV/1> and derivatives thereof are obtained by treating b -naphthalene phenylene oxide with an oxidizing agent, followed by introducing further substituents, e.g. by nitration, halogenation, or sulphonation.  The oxidation may be effected with chromic acid, bichromate in acetic acid, or oxides of nitrogen or air with catalysts.  The quinone may be reduced with zinc dust to the b -naphthalenephenylene oxide.  The nitrated quinone may be reduced, and the product diazotized, alkylated, aralkylated and acylated. Sulphonating agents produce sulphonic acids, hydroxysulphonic acids, or the hydroxyquinones.  Halogen derivatives react with amines to give imides.  According to examples, b -naphthylene phenylene oxide is oxidized (1) with chromic anhydride in glacial acetic acid, and (2) in the form of vapour with air over a catalyst of iron vanadate. The Specification as open to inspection under Sect. 91 refers also to the reduction of the quinone to a hydroquinone and the formation of its diacetate, and contains a further example of the oxidation of b -naphthylene phenylene oxide with nitric oxide in acetic acid, with simultaneous formation of a nitration product. This subject-matter does not appear in the Specification as accepted.
Patent GB-256442-A (GB)
Title: Improvements in apparatus or mechanism for operating lights or ventilators or the like of horticultural houses, buildings, and the like
IPC: E05F17/00
Filed: 1925-11-07
Abstract: 256,442. Roberts, A. Nov. 7, 1925. Valve apparatus, actuating. - Ventilator opening and closing mechanism for greenhouses &c. of the kind in which two rods sliding in opposite directions are connected by levers &c. to the pivoted sashes, is provided with levers 6 pivoted to the frame at 7 to links 8 attached to the window and to the sliding rods, the respective pivots 7. 12, 10 being at the apices of a triangle. The connections between the links 8 and the sashes and levers 6 are ball-and-socket joints as shown in Fig. 4, a ball 14 mounted between hemispherical side checks 15 on a pin secured to the links 8 engaging an eye secured to the sash 1. The levers 6 are pivoted to split sockets bolted on the two rods 3. The levers 6 are bent upwardly and downwardly respectively at their ends to bring the thrust on the links 8 into the same plane.
Patent GB-621513-A (GB)
Title: Improvements in electro-magnetic wave guides
IPC: H01P5/20
Filed: 1946-09-18
Abstract: 621,513. Wave-guides. MILLER, C. W., SAXON, G., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Sept. 18, 1946, No. 28034. Drawings to Specification. [Class 40 (v)] Energy may be fed through the perpendicular limbs of a " Magic Tee " wave-guide junction without appreciable absorption or reflection when the admittances of the aligned limbs are purely imaginary and the products of the admittances is unity. This is achieved by making the aligned limbs differ in length by a quarter wavelength, and terminating them by short-circuits.
Patent GB-358697-A (GB)
Title: Improvements in moulds for casting metals and metal alloys
IPC: B22D27/11
Filed: 1930-09-19
Abstract: 358,697. Moulds ; castings. ERICHSEN, A. M., 5, Elbestrasse, Teltow, Berlin. Sept. 19, 1930, No. 28097. [Class 83 (i).] Mould materials.-Moulds for casting plates or ingots of iron, copper, brass, nickel, aluminium, &c. are formed with one or more side walls which, during cooling of the metal, bend inwards under the influence of external pressure or of inherent tension, due to prior distortion, temperature change &c., to force out segregates, &c. The bending movement may be obtained by external means such as a screw, by flexing the walls outwardly, before casting, by means of screws r, Fig. 3, and hard packing y and then releasing or by forming the walls from two plates w, v, Fig. 4, preferably of metals, such as nickel steel, having low conductivity and of different co-efficient of expansion so that the hot metal makes them bend inwards from the position shown in full lines in Fig. 4. This movement may be restrained until the moment required by a bolt s and wedge t or by a distance piece of easily-fusible metal. The walls may curve outwardly before casting so as to give a finished plate &c. with flat sides. The moulds have water-jackets i.
Patent GB-1512574-A (GB)
Title: N-substituted aminomethyl-methoxy penam and cephem compounds
IPC: C07D501/59
Filed: 1975-07-04
Abstract: 1512574 Aminomethyl-methoxy penams and cephems CIBA-GEIGY AG 4 July 1975 [12 July 1974 7 Feb 1975] 28243/75 Addition to 1482360 Heading C2C Novel penam and cephem compounds of Formula (I) wherein Am is RaN(Rb)- in which one or both of Ra and Rb is optionally substituted C 1-7  alkyl, or one may be hydrogen, or Ra and Rb conjointly denote optionally substituted C 1-7  lower alkylene and X denotes O or S, or -CH = CH-, and -S-A denotes a radical of formula where R 1  is H, etherified hydroxyl or -CH 2 R 2  and R 2  is a free, etherified or esterified hydroxyl or mercapto or quaternary ammonium group, and R represents hydroxyl or etherified hydroxyl, and salts thereof, may be obtained (a) by acylating a compound of Formula (II) in which the amino group may be optionally substituted, with an acid of Formula (III) where Am may be in protected form, or with a reactive functional acid derivative thereof or with a salt of such a compound, or (b) by treating an acylimino compound of Formula (IVa) wherein Am is in protected form and -S-A o - has the same meaning as -SA- and the carboxyl group is in protected form, with methanol, and in the resulting compounds, protective groups and ester groups may be removed, a salt may be converted to the free acid or a different salt, or the free acid may be converted to a salt. Preparation of intermediates is described as follows: 2 - t - butoxycarbonylaminomethyl- 2-thienyl)acetic acid is reacted with MeI to form the N-methyl compound, chloroformic acid isobutyl ester is added and then 3-acetoxymethyl - 7# - amino - 3 - cephem - 4 - carboxylic acid t-butyl ester to form 3-acetoxymethyl- 7# - [2 - (5 - N - t - butoxycarbonyl - N - methylaminomethyl - 2 - thienyl)acetylamino - 3 - cephem - 4 - carboxylic acid t - butyl ester; the N-methyl compound is similarly reacted with 7# - amino - 3 - (1 - methyl - 5 - tetrazolylthiomethyl) - 3 - cephem - 4 - carboxylic acid to form 7# - [2 - (5 - N - t - butoxycarbonyl- N - methyl - aminomethyl - 2 - thienyl) - acetylamino] - 3 - (1 - methyl - 5 - tetrazolylthiomethyl)-3-cephem-4-carboxylic acid and its t-butyl ester. Pharmaceutical preparations useful as antibacterial antibiotics comprise a compound of Formula (I) above in admixture or conjunction with a pharmaceutically suitable carrier, preferably in forms suitable for parenteral administration.
Patent GB-243337-A (GB)
Title: Improvements in and relating to electric heating units and methods of making same
IPC: H05B3/06
Filed: 1925-11-10
Abstract: 243,337. British Thomson-Houston Co., Ltd., (Assignees of Abott, C. C.). Nov. 18, 1924, [Convention date]. Wire resistances, cored, embedded and encased. - In an electric heating unit, such as that described in Specification 153,661, comprising a metal wire wound on an insulating core and packed in powder in a metal sheath which is then reduced in diameter by swaging or rolling the leads pass out through an insulating block which is of less diameter than the body of the unit so that it is not damaged in the reducing process. In the form shown the wire 13 is wound on a lava or like block 14 formed with recesses in which are placed terminals 16, 17 and slots 22, 21 down which one end of the wire is passed to a slot 24 and a hole 23 in the terminal 16. The ends of the terminals 16, 17 are shouldered and bear against a mica or like disc 26, and from these the leads 28, 29 pass through a porcelain or like block 27. The whole is enclosed in a sheath 11, of greater diameter than the block 27, but provided with a reduced portion fitting round and spun over the block. The sheath 11 is filled with magnesia or like powder through a perforated filler 35 fitting into the sheath 11 by means of projections 36. The sheath is then spun over a metal closing disc and swaged or rolled to reduce its diameter and compact the powdered insulation.
Patent GB-498621-A (GB)
Title: Improvements in or relating to fabric winding-down or drawing-off mechanism for knitting machines
IPC: D04B15/88
Filed: 1937-10-18
Abstract: 498,621. Take-up mechanism for knitting-machines. KENT, A. W., HOLMES, H. H., and WILDT & CO., Ltd. Oct. 18, 1937, No. 28310. [Class 74 (ii)] In fabric take-up mechanism for knitting- machines, e.g. circular superposed cylinder machines, of the kind having two rollers 1, 2, one or each of which is pressed, e.g. by a spring (8) towards the other, the rollers being geared together at one or each end, the driving means being associated with one of the rollers and one or each of the rollers being yieldably mounted, a gear 10 associated with the yieldably-mounted roller 2 is mounted independently of said roller and connected therewith by driving means which enable the roller 2 to move relatively to the roller 1 (e.g. as shown in Fig. 6) without affecting the gears 9, 10, which connect the two rollers. The roller 2 has reduced ends 12 engaging blocks 7 which slide in guideways 13. One end of roller 2 is hollow to accommodate a, coupling rod 27 having bored, or, as shown, slotted ends which engage respectively a pin 30 in roller 2 and a pin 33 in gear 10. The slots may be in the same plane as, or, as shown, at right-angles to each other. The gear 10 is journalled in a bracket 22a which surrounds the gear 9. The bracket 22a is removably attached to the rollersupporting bracket 4. Roller 1 is driven by a device (stated to be known) comprising a ratchet-wheel 44 secured to the end thereof and racked around by a pawl 45 on the end of an angle lever 46 which is rocked about a pivot 47 by the engagement of a roller 52 on the lever with a cam surface 34c formed on a fixed bracket 34 on which rotates the take-up assembly. The cam surface may give two or more pawl throws per revolution of the assembly. Adjusting screws 55, 56 limit the throw of the pawl. The invention may be applied to rotary-cylinder or stationary-cylinder machines. Specifications 15008/00, [Class 74], and 24290/12, [Class 74 (ii)], are referred to.
Patent GB-322275-A (GB)
Title: Improvements in or relating to sound reproducing devices
IPC: H04R23/00
Filed: 1928-10-03
Abstract: 322,275. Sumner, E. H. Oct. 3, 1928. Magnetic instruments.-The reed or diaphragm C of a sound-reproducing device is provided with one or more armatures B which move longitudinally, in one or more solenoids A, solely under the dynamic influence exerted by the solenoids, i.e. the solenoids are not provided with iron cores or other magnetic parts between which and the armature attraction or repulsion might occur. A steady flux may be maintained by an auxiliary solenoid E, adjustable relative to the solenoid A, Fig. 2. The Provisional Specification states that a permanent or electromagnet acting upon the armature at either or both ends may be employed.
Patent GB-292828-A (GB)
Title: Improvements in or relating to lawn mowers
IPC: A01D34/84
Filed: 1927-10-25
Abstract: 292,828. Kock. A. E. Oct. 25, 1927. Lawn-mowers.-In lawn-mowers in which internal teeth on the driving wheels gear with pinions on the spindle of the rotary cutter, means are provided for adjusting the driving wheels vertically relative to one another so that they may run on different levels for cutting the grass at the edges of lawns. Each wheel c is mounted centrally on a disc h pivoted on the axis of the rotary cutter. The disc h is adjustable about its pivot, being secured in position by a bolt k passing through a slot e in the fixed side plate or shield b. The gearing is always in mesh and is always covered by the disc.
Patent GB-321291-A (GB)
Title: Fillers for egg cartons
IPC: B65D85/32
Filed: 1928-10-03
Abstract: 321,291. Coyle, J. L. Oct. 3, 1928. Partitioned boxes.-A tilter for an egg carton consists of cross walls 3 slotted at 4 and apertured at 5 to receive a longitudinal partition 12 which engages the slots and locks in the aperture 5 by means of a tooth 16. Further slots 6, 7 are also provided in the cross-walls 3 shaped as shown, with which outer partitions 13, 14 engage so that they may either assume the inclined positions shown, in which the middle part 20 of the partition rests against inclined edges 10 of the slots, or may be turned into the vertical position so that the tilter may be collapsable. In the form shown in Fig. 5, the partitions are adapted to be inclined outwardly and downwardly. Other forms are shown in Figs. 6, 9, 10 and 12.