baber/WOPTO huggingface dataset:
Patent GB-1496795-A (GB)
Title: Load extending mechanism for material handling vehicle
IPC: B66F9/14
Filed: 1975-01-24
Abstract: 1496795 Extendable tines EATON CORP 24 Jan 1975 [1 Feb 1974] 3218/75 Heading B8H A fork assembly for a masted lift truck comprises a rotatable platform 12 with a carriage 14 movable therealong and telescopic tines 34, 36 mounted on the carriage and actuated by a drive assembly driven by a shaft 28 common to the drive of the carriage and including a lost motion to delay movement of the tines on movement of the carriage. The drive shaft 28 is mounted on the carriage and drives a sprocket 30 which engages with a chain 22 secured at its opposite ends to the platform 12 such that rotation of the shaft 28 effects movement of the carriage relative to the platform. A further sprocket (38) Fig. 3 (not shown) is also mounted on the shaft 28 and engages a chain 40 which has two driving members 48, 50 for engagement in slots 60, 62 in a plate 54 attached to the movable part 36 of the extendable tines. The driving members, in the fully retracted position of the assembly, as shown in Fig. 5, being spaced from the slots 60, 62 such that upon initial rotation of the shaft 28, the carriage is moved relative to the platform, but there is a lag in the movement of the tines relative to the carriage. Similarly upon retraction of the assembly the tines will reach their fully retracted position in advance of the carriage reaching its fully retracted position.
Patent GB-414135-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03D1/16
Filed: 1933-02-02
Abstract: 414,135. Valve amplifying and detecting circuits. LORENZ AKT.-GES., C., 1, Lorenzweg, Tempelhof, Berlin. Feb. 2, 1933, No. 3221. Convention date, Feb. 15, 1932. [Class 40 (v).] In a screen-grid valve detector or audio-frequency amplifier, radio-frequency currents are prevented from reaching the subsequent stages by inserting a highfrequency choke D in the lead to. the screen-grid E. Screen-grid voltage is taken from a point between resistances W connected across the high-tension source A A. A condenser C is connected between the choke D and the cathode, to reduce the impedance of the screengrid circuit for audio-frequency currents.
Patent GB-1454613-A (GB)
Title: Tape recorder
IPC: G11B15/46
Filed: 1974-01-24
Abstract: 1454613 Automatic control of speed COMPAGNIE INDUSTRIELLE RADIO-  ELECTRIQUE 24 Jan 1974 [23 Feb 1973] 03255/74 Heading G3R [Also in Divisions G5 and H1] In a tape recorder with a take-up and feed reel each driven by a motor, the tape speed is maintained constant by driving the motors according to the comparison of an actual tape speed signal, from a tachometer driven by the tape, and a speed reference. The direction of travel of the tape is also sensed.  As shown, the tape speed is measured optically also Fig. 3 (not shown) using a toothed wheel 7 driven by the tape, lamp 12 and sensor 13 e.g. a phototransistor. The output of sensor 13, which has a frequency dependent upon tape speed, is amplified, shaped and integrated before comparison in differential amplifier 18 with a speed reference voltage 17. Amplifier 18 varies the voltage supplied to reel motors 1, 2 to maintain the tape speed constant. Optical sensor 12, 13 may be replaced by a magnetic sensor. Signals from a switching circuit Fig. 6 (not shown) are supplied to terminals 30 or 31 for fast wind or rewind, and to terminal 32 to stop the tape, with a low voltage supplied to motors 1, 2 to keep to tape taut under non-running conditions. The tape direction may be sensed by a device as Fig. 4 (also not shown), see Division G5.
Patent GB-607398-A (GB)
Title: Improvements in and relating to piezoelectric apparatus
IPC: H03H3/04
Filed: 1946-02-01
Abstract: 607,398. Tuned circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Feb. 1, 1946, No. 3286. Convention date, Feb. 8, 1945. [Class 40 (viii)] [Also in Group XL (c)] The effect of temperature change on the natural frequency of a piezo-electric crystal is compensated by means of a shunt capacity 5 controlled by a thermal switch 6. The crystal 1 is of the type in which the natural frequency is a maximum at the mean operating temperature. The switch 6 comprises a bimetallic strip 13 bearing contacts 8 which are opened when the temperature change exceeds a predetermined amount in one direction. A corresponding change in the opposite sense causes the contacts 9 to open, the effect in either case being to remove the condenser 5 from circuit and restore the frequency to the desired value. The bimetallic strip 13, Fig. 5 (not shown), may be provided with a second pair of contacts, whereby a further condenser is removed from circuit when the temperature change exceeds a greater predetermined value. In an alternative arrangement, Fig. 6 (not shown), the contacts 8, 9 are carried by separate bimetallic elements. The frequency - compensating element may alternatively comprise series capacity or series or shunt inductance.
Patent GB-1254586-A (GB)
Title: Improvements in or relating to phenylhydrazones and the manufacture thereof
IPC: A01N37/52
Filed: 1969-03-03
Abstract: 1,254,586. Benzoyl chloride phenylhydrazones. UPJOHN CO. 3 March, 1969 [4 March, 1968; 26 Nov., 1968], No. 3398/71. Divided out of 1,254,585. Heading C2C.  The invention comprises compounds of the formula  wherein X is halogen, C 1  to C 6  alkyl or N0 2  ; Y is halogen, C 1  to C 6  alkyl or NO 2 ; n is 0 or an integer from I to 5 inclusive; m is 0 or an integer from 1 to 3 inclusive, and providing (1) the sum of m + n is at least 1 but not more than 6, (2) the sum of carbon atoms in the alkyl substituents is not more than 15, (3) there is no more than one NO 2  group in the molecule, (4) X may not be halogen when n is 1, m is 1 and Y is halogen, (5) X may not be halogen when n is 1 and m is 0, and (6) when n is 0, (Y) m  may. not be p-nitro-, o- or p-chloro-, 2,4-dichloro- or 2,4,6-trichloro-. They may be prepared by reacting a benzoic acid phenyl hydrazide of the formula  with PCl 5  and reacting the resulting intermediate with phenol. Examples are given for the preparation of the compounds. They are useful as insecticides, miticides and in anthelmintic compositions.  Benzoic acid phenylhydrazides are obtained by reacting a benzoic acid derivative with the appropriate phenylhydrazine.
Patent GB-782066-A (GB)
Title: Vitamin a product and process for producing same
Inventor: HOCHBERG MELVIN
IPC: A61K31/59
Filed: 1956-02-03
Abstract: High potency Vitamin A-containing products are obtained by rapidly heating a material containing Kitol in the presence of up to 1.0 per cent by weight of antantioxidant therefor to an elevated temperature of at least 215 DEG CC., maintaining it at such elevated temperature for at least five seconds, and subsequently rapidly cooling it to about room temperature.  As starting compounds there may be used liver oils, e.g. whale liver oils, shark liver oils, and lamb liver oils.  As antioxidants there may be used propyl gallate, nordihydroguaretic acid, mixed tocopherols, diphenyl paraphenylene diamine, di-t-butyl-hydroquinone and butylated hydroxy anisole. Synergists, e.g. lecithin, citric acid, and alkyl phosphates, may be added.  The reaction may be effected batchwise or as a continuous process.  Preferably the reaction is effected between 230-280 DEG  C. for a period between 5 secs. and 10 mins.  A mineral oil diluent may be employed.  Examples describe the production of a Vitamin A product starting from oils derived from a variety of sources.
Patent GB-161373-A (GB)
Title: Apparatus for clearing small receptacles
IPC: B65G53/12
Filed: 1920-02-06
Abstract: 161,373. Scott, J. A. Feb. 6, 1920. Strip - perforating machines.- A device for clearing by means of compressed air the receptacle that receives the paper punchings in machines for making typographical recordstrips consists of a curved plate a adapted to cover the receptacle g and having attached to it an outlet pipe c through which passes an air inlet pipe e provided with a nozzle f. At the end of the pipe c is a receiving-box for the punchings, which is made in two parts, the outer part d being formed of wire gauze and detachably secured by means of a bayonet-joint h.
Patent GB-878010-A (GB)
Title: Improvements in or relating to apparatus for driving webs
Inventor: HOLMAN HERBERT EDWARD
IPC: G11B15/44
Filed: 1957-02-12
Abstract: 878,010. Driving record tapes. ELECTRIC & MUSICAL INDUSTRIES Ltd. Feb. 6, 1958 [Feb. 12, 1957; May 14, 1957], Nos. 3723/58 and 15223/57. Divided out of 878,008. Class 40 (2). [Also in Groups XVI and XXIV] In apparatus for driving a record tape such as film or magnetizable tape, in either direction through an operating zone which may comprise an optical or magnetic transducer, wherein the tape passes around a driving capstan of the vacuum type on a shaft 3, Fig. 2 (Prov.) 15223/57, and two take-up spools 9, 10, either one of which is effective according to the direction of rotation, the said take-up spools are driven by the capstan shaft 3, through a toothed belt 15, or through a linkwork coupling, Fig. 2 (Comp.), and the drive to each spool includes a one-way clutch 11, 12, effective in the take-up direction only, and a friction slipcoupling. The slip and one-way coupling comprises a driving toothed wheel 17, Fig. 3 (Prov.) 15223/57, driven by the belt 15, and clamped between discs 20, 23, together with interposed discs 21, 22, by an adjustable spring 25, the plate 20 carrying a pawl 11a engaging a ratchet wheel 11 fast on the spool shaft 7. A jamming ball-ratchet clutch may replace the positive pawl clutch. A magnetic or other brake may be associated with each shaft 7, 8 and momentarily actuated during the reversal period to prevent spool overrun or partiallyactuated during the uncoiling operation to maintain tension in the unwinding run and to prevent any spool rotational oscillation. During reversal the capstan roller vacuum may be released to permit relative movement between the said roller and the tape and allow the tape winding spool to increase in speed, thus maintaining the tape taut. The alternative linkwork coupling, Fig. 2 (Comp.), comprises a driving crank 28 on a shaft geared to the capstan shaft, driven cranks 30, 31 associated with take-up shafts, and a three-armed connecting rod 29. In this form the one-way and slip coupling may be as described in Specification 878,009. The capstan shaft 3 is driven by a reversible electric motor or by a non-reversible motor through worm and reversible friction gearing, Fig. 1 (Comp.) (not shown), which includes further braking means and forms the subject-matter of Specification 878,008.
Patent GB-379976-A (GB)
Title: Improvements in or relating to cables for use for feeding radio and other high frequency electrical energy
IPC: H01B11/00
Filed: 1932-02-08
Abstract: 379,976. C a b l e s . TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Feb. 8, 1932, No. 3759. Convention date, Feb. 7, 1931. [Class 36.] A high-frequency cable comprises an inner conductor L1 carried concentrically within an outer conductor by spaced porcelain or like insulators P, the outer conductor consisting of relatively short rigid sections ball-jointed together. The insulators P may be in the form of rings slitted laterally to enable them to be pushed sidewise on the conductor L1 which preferably consists of a plurality of wires twisted together to space the insulators P. The outer conductor sections may consist of semicylindrical copper shells S1, S2 having interengaging spheroidal ends held together by a copper ring R. The insulators P may be disposed in the spheroidal ends of the outer conductor sections, as shown. To provide a relatively smooth surface over which a protective sheath of lead may be applied, strips of copper foil may be wound in long-pitched helices over the outer conductor. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a flexible outer conductor consisting of helically wound strips of copper foil or of a woven-wire tube which may be insulated from the outer lead sheath. This subject-matter does not appear in the Specification as accepted.
Patent GB-224776-A (GB)
Title: Improvements in fountain pens
IPC: B43K5/04
Filed: 1924-02-14
Abstract: 224,776. Keates, L. A., and Union Pen Co., Ltd. Feb. 14, 1924. Reservoir pens.-In a collapsable sac reservoir pen having no lock for the operating-lever G, and provided with a presser-bar D extending over the whole length of the sac, and a spring A operated by the lever, the presser-bar, which is preferably U-shaped in section, is pivoted to the spring near the centre of the length of the sac to facilitate complete compression.
Patent GB-941907-A (GB)
Title: Improvements in or relating to apparatus for cleaning dust laden air
Inventor: KENNEY ERNEST CHRISTOPHER
IPC: B01D47/02
Filed: 1959-02-04
Abstract: 941,907. Washing air. BRITISH UNITED SHOE MACHINERY CO. Ltd., and E. C. KENNEY. Feb. 3, 1960 [Feb. 4, 1959], No. 3887/59. Heading B1R. An apparatus for cleaning dust-laden air comprises an inlet chamber 4, an outlet chamber 6, a conduit 16, 18 interconnecting the chambers, the inlet part 16 of the conduit being scroll-like in cross-section (see Fig. 2) to provide an inwardly curved upper portion 20 and a lower edge 22 between which is a mouth 24 extending along the conduit. Both chambers are filled with water to a level S which overlies the edge 22 but is below the portion 20 (see Fig. 3, not shown), so that air entering the apparatus at 14 passes via the mouth 24, in contact with the water, to the conduit 16, passing through a sheet of water formed between an edge 32 and the opposite wall of the conduit. Water is removed from the air by a baffle 34 and filter 36 as it passes to an outlet 30 in which is a fan 26. A conveyer having mesh-like plates may remove sludge from the chamber 6.
Patent GB-482542-A (GB)
Title: Improvements relating to sealed shelters, notably those for protection against aerial or other bombardment
IPC: E04H9/10
Filed: 1937-02-10
Abstract: 482,542. Door fastenings. MAIGRET, A. L. E. Feb. 10, 1937, Nos. 3995 and 3996. Convention dates, Feb. 10, 1936 and Dec. 21, 1936. [Class 44] . [Also in Group X] The Specification as open to inspection under Sect. 91 describes a door 4 having locking-bolts 27 which carry racks 33 meshing with pinions 32, the arrangement being such that the bolts are moved simultaneously. The bolts are actuated by a motor 41 which is geared to a rack 36 slidably mounted on a spindle 35 carried by the door hinges 28. A boss 36<1> on the rack engages with a further rack 34 on the spindle, and the rack 34 is geared by a pinion 30 with a rack 31 which meshes with three of the pinions 32. The motor may be dispensed with and the mechanism may then be driven by hand. This subject-matter does not appear in the Specification as accepted.
Patent GB-493188-A (GB)
Title: Improvements relating to washing machines
IPC: D06F39/08
Filed: 1938-02-09
Abstract: 493,188. Washing-machines. TULLIS, Ltd., D. & J., and TULLIS, D. K. Feb. 9, 1938, No. 4020. [Class 138 (ii)] Rinsing water is supplied to the interior of the rotary receptacle 7 of a washing-machine from a stationary chamber 3 arranged within the machine casing 1 and provided with an aperture 5 coaxial with the receptacle trunnion 6. A boss 8 secured to the end wall of the receptacle fits into the aperture 5 and is provided with an annular pocket 9 communicating at one end with the chamber 3 and having apertures 10 at the other end communicating with the receptacle. A perforated plate 11 may be provided within the receptacle. A similar arrangement may be provided at the other end of the machine.
Patent GB-104912-A (GB)
Title: Improvements in or relating to Multi-spindle Lathes.
Inventor: JACKMAN GEORGE
IPC: B23B9/06
Filed: 1916-03-21
Abstract: 104,912. Jackman, G., Langford, W., and Griffiths, E. M. March 21, 1916. Drilling-machines; lathes. -- Multiple-spindle machines, of the type in which tool or work spindles are concentrically arranged round a driving- shaft in a fixed head, have a pillar supported centrally on the head and containing a feed-screw coaxial with the driving-shaft for traversing a work or tool carrier on the pillar. As arranged for boring shells, the tool spindles are driven by gearings F<2>, F<4>, Fig. 1, and the feed-screw D<5> is driven for feed from a shaft D<4> through bevel-gearing and a positive clutch E, and for quick return, from the driving-shaft F<1> through a friction clutch F<5>. The shells are loaded into carriers G' easily securable to the carrier G, which may be balanced by fluid under pressure admitted above the pillar. As arranged for turning, a multiple tailstock is mounted on the pillar, which is slotted to pass a cross-piece G<4>, on the carrier, containing the feed-nut. The tool-slides M<1>, shaped as shown in Figs. 3 and 4, are held by springs in contact with a former sleeve secured on the pillar, but angularly adjustable when worn.
Patent GB-881449-A (GB)
Title: Improvements in or relating to ultrasonic flaw detecting apparatus
IPC: G01N29/24
Filed: 1957-02-07
Abstract: 881,449. Ultrasonic probes. GLASS DEVELOPMENT Ltd., and SPROULE, D. O. Feb. 24, 1958 [Feb. 7, 1957], No. 4265/57. Class 40 (4). A needle-shaped probe 1 carrying a barium titanate crystal element 12 is mounted in a holder 4 by means of two hair springs 2, 3. The hair springs are held between collars 8, 10 and a cylindrical metallic sleeve 9, the assembly being secured by a nut 11. The hair spring hubs are slightly larger than holes in the collars 8, 10 and provide stops to limit the movement of the probe in the holder. A spring pushes the probe forward and serves as one electrical connection to the crystal element. The hair springs serve as the second connection. The probe may be supported by wires or by membranes of metal or rubber in place of hair springs.
Patent GB-552960-A (GB)
Title: Improvements in chimneys, ducts and the like
IPC: E04H12/28
Filed: 1942-03-31
Abstract: 552,960. Chimney linings. STANIFORTH, A. V. March 31, 1942, No. 4284. Addition to 537,307. [Class 25] The gaps between adjacent panels 1 lining the wall 12 of a chimney, duct, or flue are covered by strips or bars 2 of uniform section throughout their length engaging in similarly sectioned side openings 15 in smooth surfaced clamps 3 which are secured to the wall 12 by bolts 5 seated in a central depression 19. The bars 2 may be of arcuate or V- section and be formed with strengthening ribs 8. The clamp 3 may be dome-shaped or of rectangular section and be formed with strengthening ribs 18. The hollow spaces below the bars and clamps and the depression 19 may be filled in with a plastic compound.
Patent GB-536479-A (GB)
Title: Improvements in or relating to a centrifugal speed governor
IPC: G05D13/28
Filed: 1940-03-07
Abstract: 536,479. Speed governor brakes. THORENS SOC. ANON., H. March 7, 1940, No. 4301. Con. vention date, March 21, 1939. [Class 103 (i)] [Also in Group XXVI] A speed-limiting device for talking machines comprises rectangular bent levers 19 with arms carrying weights 30 moved centrifugally outwards against leaf springs 32 thus forcing the other arms against a ring carrying felt and pads 35 which are thus forced against a stationary plate 42. The levers carry noses 23 which act as stops for the movement of the weights, thus protecting the springs against undue strain.
Patent GB-956065-A (GB)
Title: Improvements relating to load-lifting and transporting trucks
IPC: B62B3/06
Filed: 1962-02-05
Abstract: 956,065. Low lift trucks. T. KIKUCHI. Feb. 5, 1962, No. 4334/62. Heading B8H. The U-shaped lifting frame 12 of a low-lift hand truck is connected to a U-shaped chassis 1 by parallel pivoted links 13, 14 and is raised by a foot lever 21, 22 which is pivoted to a rigid handle 9, 10 and which is connected to the links 14 by links 20, and a latch mechanism 36 is provided to lock the frame 12 automatically in its raised position. The mechanism 26 comprises a latch 27, Fig. 3a, having a hook portion 28 and an abutment face 32 and provided with a slot 29 which engages a pin 33 on a bracket 25 secured to the chassis 1. On depressing the foot lever 21, the cross-bar of the lever engages the face 32 and depresses the latch 27 until the pin 33 is at the top of the slot 29 in which position a spring 34 pivots the latch in an anti-clockwise direction about the pin so that on releasing the foot lever 21, the weight of the frame 12 and the load raises the lever 21 to bring the cross-bar into engagement with the hook portion 28 and to raise the latch until the pin 33 is at the bottom of the slot 29, thereby holding the frame 12 in a raised position. To lower the frame 12, the foot pedal is depressed slightly to disengage it from the hook portion 28 of the latch whereupon the spring 34 pivots the latch in a clockwise direction about the pin 33 so that on releasing the foot pedal it is free to rise to its full-line position thereby lowering the frame 12.
Patent GB-924345-A (GB)
Title: Tube coupling structure having combined seal and retaining means
IPC: F16L37/084
Filed: 1962-02-05
Abstract: 924,345. Pipe joints. S. D. WILTSE. Feb. 5, 1962, No. 4341/62. Class 99(1). A tubular member 24 has at one end thereof a radially extending, annular flange 26 provided with a radially extending inner surface and an outer rearwardly inclined surface 28, and an annular one-piece fitting 10 has an integral radially-extending, annular, rigid flange 14 and a radially extending annular channel 18, the flange constituting a rigid abutment for the inclined surface of the flange 26. The inner side wall of the channel 18 extends normal to the axis of the fitting and is disposed substantially in radial alignment with and constitutes an extension of the radially extending inner surface of the flange 26, and a fluid-tight seal between the fitting and the member 24 prevents accidental withdrawal of the member from the fitting, the seal comprising a resilient radially-expansible and substantially axially non-compressible, shearresisting, annular ring 20 of circular crosssection. The inclined surface of the flange 26 is operable during manual insertion of the member 24 into the fitting to expand the ring 20 to a position within the channel 18 to provide clearance for the flange of the member, and the ring contracts when the flanges 26, 14 are in abutment; the radially-extending surfaces of the channel constrain movement of the ring only in a direction normal to the longitudinal axis of the fitting, and the channel is adapted to completely receive the ring to provide clearance for manual insertion and withdrawal of the flange 26. The interior of the fitting between the outer end thereof and the channel is spaced from the member 24 a distance less than the radius of the crosssection of the ring 20. An annulus 70 of sponge or foam rubber, or other cellular elastomer may be disposed within the channel 18, and the ring 20 may have a helical spring ring embedded therein. To facilitate disconnection of the member from the fitting a split, tubular tool 60<SP>1</SP> is slid along the member to expand the ring 20.
Patent GB-232731-A (GB)
Title: A combined saddle cover and carrier for bicycles and the like
IPC: B62J1/18
Filed: 1924-02-21
Abstract: 232,731. Copperwaite, F. G. Feb. 21, 1924. Saddles. - A combined saddle-cover and rigid luggage-carrier for a bicycle &c. is adapted to project horizontally over the rear wheel when acting as a carrier and to be swung up as indicated in Fig. 4, to act as a saddle cover. The carrier platform consists of a central rectangular part and two tapered side parts of sheet-metal, adapted to slide relatively to one another to vary the width. The platform is carried by arms D, D<1>, Fig. 3, attached to sleeves C, C' rotatably mounted on a rod I secured to tubes J, J' adjustable on rods K, K<1>, according to the height of the saddle. The rods K, K<1> are fixed to a member L adapted to be clamped by means of a bolt G<2> to the frame stays under the saddle. The platform, when acting as a carrier, is held rigid by two stay rods secured to the back fork.