baber/WOPTO huggingface dataset:
Patent GB-1479289-A (GB)
Title: Engines
IPC: F01B7/20
Filed: 1974-10-14
Abstract: 1479289 Two-stroke I C engine C W THOMSON 14 Oct 1974 [16 Oct 1973] 48169/73 Heading F1B A reciprocating piston I.C. engine comprising a cylinder with a piston axially reciprocable therein has a cavity intermediate the ends of the piston, within which cavity a shuttle member is guided to slide diametrically of the piston and coupling means between the cylinder and shuttle permitting relative movement between the cylinder, the shuttle and the piston, fluid ports being provided in a wall of the cylinder and the piston, the fluid ports of the piston being in communication with said cavity therein. The piston and shuttle each operate on a two-stroke cycle and there is 90 degrees phase displacement between the cycles. In the I.C. engine shown, the piston head Al is at top dead centre. Arranged between the heads Al, A2 is a rectangular slot T forming a diametral guide for a shuttle member B which is bored to receive a disc C eccentrically mounted on a shaft D, journalled in bearings on the cylinder on an axis normal to the cylinder axis. When the piston A is at one extreme end of its stroke, chambers Kl, K2 are formed in the slot T above and below the member B. When ignition takes place, the piston moves axially and rotates eccentric cam-shaft D. This causes the member B to force air from space Kl through connected ports F3, F4 to scavenge cylinder H2. As the same time air is drawn through port Gl to space K2. Further movement of piston A closes ports F3, F4, Gl, and E2. Compression then takes place in cylinder H2. At the same time, member B reaches top dead centre. Further movement of the piston A opens the ports G2, F2, F1, El and causes the member B to move downwards and suck air through port G2 into space K1 and discharge the air in space K2 through ports F2, F1, El. Following ignition in chamber H2, ports El, Fl, F2 and G2 are cut off and member B reaches the bottom of its downstroke. The completion of this stroke will return the piston A and shuttle member B to the position shown. The construction can be modified to operate as a two-stage compressor.
Patent GB-1292892-A (GB)
Title: Volumetric infant feeding unit
IPC: A61J15/00
Filed: 1970-10-09
Abstract: 1292892 Feeding bottles ABBOTT LABORATORIES 9 Oct 1970 [5 Nov 1969] 48199/ 70 Heading A5X [Also in Division B8] A feeding bottle comprises a calibrated container 11 having a screw-on cap 40 with an inclined hollow boss 44 to which a catheter 50 is attached by means of a hollow cap 51. The feeding bottle may be supplied as a kit with a conventional teat and retaining ring which can replace the cap 40; see Fig. 1, (not shown).
Patent GB-1423959-A (GB)
Title: Regulated power supply for non-sacrificial anode
IPC: G05F3/22
Filed: 1974-11-07
Abstract: 1423959 System for cathodic protection RHEEM INTERNATIONAL Inc 7 Nov 1974 [21 March 1974] 48214/74 Heading C7E A corrosion prevention system comprises a non-sacrificial anode 12 in an electrically conductive fluid 11 in contact with corrodible metal 10 which forms the cathode (e.g. a water tank), and an electrical bridge system as shown having a semi-conductor 24 connected to 12, a resistor 26, and a constant voltage source (e.g. the conductor between resistors 28 and 30, as shown). The semiconductor may be a PNP transistor, and there may be a light-emitting diode between either the DC source and the bridge Fig. 5 (not shown) or the transistor and the anode Fig. 6, (not shown) to monitor operation of the system. Resistor 28 may be replaced by a Zener diode, to hold the voltage level of the base of the transistor constant. The system delivers constant current through the anode, regardless of variations in the resistivity of the anode-liquid-cathode system.
Patent GB-1133603-A (GB)
Title: Shielded electrical cable
IPC: H01B11/00
Filed: 1965-11-15
Abstract: 1,133,603. Cables. GENERAL CABLE CORP. 15 NQV., 1965 [22 Jan., 1965], No. 48391/65. Heading H1A. In a shielded electric cable plastics sheathing 13 adheres strongly to the periphery of tubular metal shield 12 within the strip between A and B which includes the overlap of the shield and has a controlled lesser adhesion to the rest of the periphery, indicated by 15, to facilitate stripping the plastic from the shield in regions removed from the overlap. To achieve this the strip of metal, prior to being folded round the insulated conductors 11, is coated with a strongly adhesive copolymer of ethylene with a monomer containing carboxyl groups and a region of lesser adhesion is produced by heating with preferably an oxidizing flame. Alternatively, only the outer edges of the strip are coated with the strong adhesive and the centre is coated with a polyethylene of lesser adhesion. In another method the strip coated with strong adhesive is wrapped round the conductors and before the polyethylene sheath 13 is extruded, a release agent such as talc or a silicone is applied to the region requiring lesser adhesion. Reference has been directed by the Comptroller to Specification 977,038.
Patent GB-1400598-A (GB)
Title: Apparatus for tossing disc-shaped objects
IPC: F41J9/30
Filed: 1972-10-20
Abstract: 1400598 Clay-pigeon projectors I S HANSEN 20 Oct 1972 [26 Oct 1971 23 May 1972] 48463/72 Heading A6D A clay-pigeon projector has an ejector arm 5 extending from a main shaft 4 mounted in frame members 1, 2, 3 and also supports a crank arm 20 connected to one end of an ejector spring 21. The main shaft 4 is driven by a motor (10) (Fig 3 not shown) through a worm gear (9) and worm wheel which is coupled to the shaft 4 by a one-sided overrunning clutch and a releasable clutch in a coupling arrangment 8 operated when a pin 11 contacts a pawl 12. The ejector arm 5 starts 180 from the position shown. The motor (9) drives the shaft 4 in the direction 34 until the pin 11 reaches a hook 15 on the pawl 12 when the releasable clutch is disconnected, the shaft 4 being retained with the spring 21 fully tensioned and the crank arm 20 in dead centre. The ejector arm 5 collects a clay pigeon from a platform 24 below a magazine 22. The platform is raised and lowered as a roller 30 on its support arm 28 rides on the rim 32 of a wheel 31 fast with the shaft 4. The clay pigeons 23 remaining in the magazine are retained by rollers 41 which move in response to rotation of a guide wheel 37 on the shaft 4 to allow one pigeon per cycle to drop on the platform 24. When the pawl 12 is disengaged from the pin 11 by a push-rod (19) (Fig 3 not shown) or a magnetic coil (17) the onesided overrunning clutch engages and the shaft is again driven by the motor so that the crank 20 moves off dead centre and the spring 21 then accelerates the shaft and ejector arm 5 to project the day pigeon which rolls along a side wall 6 on the arm. A brush (56) (Fig 4 not shown) may be positioned on the arm to delay projection of the clay pigeon to compensate for a side wind (Figs 5-8, not shown).
Patent GB-975130-A (GB)
Title: Improvements in machine tool-holder slides and cutting tool-holders
IPC: B23B29/24
Filed: 1962-12-21
Abstract: 975,130. Tool-holders. A. DIEFENBACH. Dec. 21, 1962, No. 48477/62. Headings B3B and B3T. A tool-support comprises a slide a located vertically by a bolt 3, and a tool-holder b having a shank 10 retained in the slide by at least one clamping bolt 7. The shank 10 engages a bore 5 having a V-recess into which the shank is clamped by the bolt 7. A similar recess 14 is formed in the tool-holder b in which the tool 15 is clamped by screws 13 bearing on a chip breaker 16.
Patent GB-978910-A (GB)
Title: Improvements in or relating to sail slides
Inventor: OAKELEY JOHN DIGBY ATHOLL
IPC: B63H9/08
Filed: 1962-12-27
Abstract: 978,910. Sail slides. IAN PROCTOR METAL MASTS Ltd. Dec. 20, 1963 [Dec. 27, 1962], No. 48660/62. Heading B7V. A sail slide comprises a channel-shaped portion adapted to receive and engage therein the bolt rope 9, luff or foot of a sail 6, and a male (or female) track engaging portion 8 adapted in use slidably to engage a female (or male) track 2 on a mast, boom or spar 1 of a boat. The track 2 is secured to, or integral with, the mast 1.
Patent GB-1281379-A (GB)
Title: Improvements in or relating to textile doubling and twisting machines
Inventor: SHAW ROBERT
IPC: D01H13/16
Filed: 1969-10-03
Abstract: 1281379 Stop motions TMM (RESEARCH) Ltd 26 Oct 1970 [3 Oct 1969] 48686/69 Heading DID Yarn forwarding rollers 6, 7 in a doubling and spinning machine comprise a detector 4 responsive to the absence or reduction in tension in each of the yarns to be doubled (only one yarn is shown in the view of Fig. 1) and a detector 8 responsive to the absence or reduction in tension of the doubled yarn in a region following the rollers, the detectors responding by disengaging the drive (roller 19) acting on at least one of the rollers 6, 7 and applying a brake to one of the rollers. As shown, upon detection of the yarn break by either detector 4 or 8, pneumatic valve 26 is operated to cause the arm 10 supporting rollers 6, 7 to be lifted away from the driving roller 19. As the rollers move upwardly roller 7 engages braking arm 45. The rollers 6, 7 are kept in the raised position by latch 43, 44. The detectors may also apply a brake to the take up spindle.
Patent GB-1355492-A (GB)
Title: Flexible heater assemblies
IPC: H05B3/84
Filed: 1973-10-19
Abstract: 1355492 Laminates SMITHS INDUSTRIES Ltd 19 April 1971 [11 Sept 1970 5 Feb 1971] 48851/73 and 48852/73 Divided out of 1355491 Heading B5N [Also in Division H5] The disclosure is included in the main Specification 1,355,491 but the claims are directed to a flexible heater assembly comprising a heating element in the form of a strip 4 which has a plurality of limbs in planar array and which has an adhesive coating on one surface by which it is to be secured to a surface, e.g. a window, a first covering layer 2 removably secured to the adhesive coating, and a second covering layer 10 removably secured to the opposite surface of the heating element 4 by a second adhesive coating, the first covering layer 2 being more readily detachable than the second covering layer 10.
Patent GB-1012291-A (GB)
Title: Improvements in or relating to sampling apparatus
Inventor: RICHARDSON GEORGE DICKINSON
IPC: G01N1/20
Filed: 1963-12-12
Abstract: 1,012,291. Sampling apparatus. BABCOCK & WILCOX Ltd. Dec. 11, 1964 [Dec. 12, 1963], No. 49123/63. Heading B8N.  An apparatus for sampling pulverulent material, such as coal, from a chamber 6 at superatmospheric pressure comprises a rotatable carrier 18 slidable in a sleeve 10 and having at its inner end a receptacle 16 which may be oriented to bring an opening therein into line with falling material and also may be withdrawn into the sleeve and rotated to deliver collected material through an aperture 9 in the sleeve; The carrier is provided with guide plates 24 adapted to run on rods 33 secured between opposite walls of the chamber 6. In operation, the carrier is moved, by means of handle 20, from the position shown in which material has fallen into the receptacle 16, to a position wherein the receptacle is within the sleeve; upon rotation of the carrier, the material in the receptacle falls through the aperture 9 in the sleeve.
Patent GB-1408640-A (GB)
Title: Catalyst recycle
IPC: C07D301/19
Filed: 1972-10-26
Abstract: 1408640 Recovering epoxidation catalysts; film evaporation HALCON INTERNATIONAL Inc 26 Oct 1972 [27 Oct 1971] 49414/72 Headings BIB and B1E Epoxidation catalysts comprising Mo, W, Ti or V are recovered from the heavy liquid fraction obtained from the reaction mixture by thin film evaporation of the fraction until at least 60 wt% of the fraction is evaporated overhead. When the product is liquid it can be re-used directly as an epoxidation catalyst together with fresh catalyst. Solid products are first reacted with t-butyl hydroperoxide in t-butanol and propylene glycol and filtered to give a catalyst solution. In one embodiment the heavy liquid fraction is first evaporated in a fixed clearance rigid blade evaporator and the product is then evaporated further in a swinging blade evaporator.
Patent GB-1161409-A (GB)
Title: Improvements in or relating to Focussing Means
Inventor: HALLSWORTH JAMES STERLING
IPC: G03B27/52
Filed: 1965-11-25
Abstract: 1, 161, 409. Lens focusing devices. GNOME PHOTOGRAPHIC PRODUCTS Ltd. Feb. 1, 1967 [Nov.25, 1965], No.50176/65. Heading G2J. The lens of a slide projector or other photographic apparatus is axially shifted for focusing by engagement with the lens barrel 3 of a lug 6 on a lever arm 8 pivoting at 9, the angular movement of the arm being damped by the device 16. This device consists of an element (19, Fig. 3, not shown), rotatable between fixed discs (17) and (18), and having an extension (20) connected to the lever arm through a slot and pin (23). A viscous grease or plastics wafer fills the space between the discs and element (19). Lever 8 may be manually operated through end 10, or through two opposed solenoids 14, 15 having a common armature 12 whose plunger 13 engages the rubber-covered pin 23.
Patent GB-1355900-A (GB)
Title: Household oven
IPC: F24C15/02
Filed: 1972-11-01
Abstract: 1355900 Spits MOULINEX S A 1 Nov 1972 [2 Nov 1971] 50400/72 Heading A4D [Also in Divisions E2 and F4] An oven comprises a pivotably mounted door 20 which is movable to a partly open position in which it lies parallel to the plane of the oven opening 18. The door is mounted on at least one hinge including a pivot pin 26 on a slide 28 which is held in a guide 30 by a spring 32. The spring 32 is mounted on a rod 36 which is integral with the slide 28 and is guided by a slot 38 in a bracket 34. A locking device (40) Fig. 3, (not shown) for the door 20 includes two catches (42) for the closed and partly open positions of the door. The oven is heated by electrical resistance elements 12, 14 and includes a rotary driving device (16) for a spit.
Patent GB-1369598-A (GB)
Title: Railway communication systems
IPC: B61L3/22
Filed: 1970-10-23
Abstract: 1369598 Automatic train control BRITISH RAILWAYS BOARD 7 Oct 1971 [23 Oct 1970] 50520/70 Heading B7N [Also in Division G4] In a railway communication system, a transmitter selects the contents of one of a plurality of read-only memories according to the identity of a prevailing one of a plurality of signal aspects and transmits them continuously for as long as the prevailing aspect is showing. Fig. 1 shows trackside equipment in a track-to-train communication system. One or more relays HR, HHR, DR are energized to light one or more coloured signal lamps Y1, G, Y2, R and connect the output of one of clock-pulse driven readonly memories ROM1, ROM2, ROM3, ROM4 to a modulator 7 from which the information (including parity bits) from the memory is inductively coupled via track conductors to the train to control train speed or indicate maximum permissible speed visually to the driver. As a modification the relays could control supply of power or the clock pulses to the memories. The system could be applied to telemetry instead. Read-only memory (Fig. 2).-A clock pulse input 26 drives a counter 16 which selects successive columns of a 16 x 16 diode matrix at 11, 12, 23, 24 and drives a counter 32 via line 20 to select successive rows of the matrix via decoder 30, 31. The positions of each column of the matrix are connected to an input of 11 or 12 respective to the column via two NANDs 13, 14 and a NOR 15 (which thus act as an AND). Thus the memory is read out completely, serial by bit, at 25, repeatedly.
Patent GB-1160626-A (GB)
Title: Coin-Freed Mechanisms
Inventor: FOUFOUNIS JEAN
IPC: G07F5/04
Filed: 1967-11-08
Abstract: 1,160,626. Coin freed mechanism. J. FOUFOUNIS. 8 Nov., 1967 [10 Nov., 1966], No. 50862/67. Heading G4V. A coin-freed mechanism comprises a manually operable member 50 driving a rod 40 cooperating with an apertured member 70 through an inserted coin 10. The member 50 may be operated a plurality of times to advance the rod 40 and member 70 step-by-step through pawl and ratchet mechanisms 42, 54 and 72, 76, until the coin 10 falls from the support 30. On operating the member 30 following discharge of the coin, the rod 40 passes through aperture 90 whereby a slide 44 carried by the rod trips pawl 72 to release the member 70. The pawl 54 is tripped by a stop 58. The support 30 may be stepped whereby coins of different diameter permit operation of the mechanism a different number of times. In a modification, the manually operable member (5) is connected directly to the rod (4) and pivots a two-armed lever (12) to latch the member (7) in its depressed position, Fig. 1 (not shown). A coin falling from the support (3) resets the lever (12) to release the member (7). The mechanism may be incorporated in a juke-box.
Patent GB-1362294-A (GB)
Title: Photographic colour process and materials therefor
IPC: G03C8/08
Filed: 1971-11-02
Abstract: 1362294 Photographic dye diffusion transfer process EASTMAN KODAK CO 2 Nov 1971 [3 Nov 1970] 50869/71 Heading G2C A photographic assemblage comprises (I) a photo-sensitive element comprising a support having thereon at least one photo-sensitive silver halide emulsion layer which contains or which is contiguous to a layer containing a quinone-coupling dye (i.e. a dye which in alkaline aqueous medium forms a -CH 2 - group and is diffusible therein and which is capable of coupling in the medium with the quinone,  formed by oxidation of the hydroquinone or catechol silver halide developing agent, to form a non-diffusible product), (II) a dye imagereceiving layer and (III) a rupturable container containing alkaline processing liquid positioned so that during processing the container's contents are discharged within the assemblage, the assemblage containing a hydroquinone or catechol silver halide developing agent. The invention also comprises a photosensitive element as defined at (I) above containing a hydroquinone or catechol developing agent. The quinone-coupling dye may be a ketomethylene containing compound e.g. a 3- methyl-5-pyrazolone having a dye molecule  attached to a N in the ring system and is preferably a compound of the formula:- or where dye is a dye group; n is 0 or 1; Z completes a non-metallic heterocyclic nucleus; X is an anion; and R is H, alkyl, aryl, substituted alkyl or substituted aryl. The hydroquinone or catechol may have one of the formulae: - where R<SP>3</SP> is H, alkyl, alkoxy, halogen or optionally substituted aryl. The photosensitive element may comprise red-, green- and blue-sensitive silver halide emulsion layers each containing or having in a contiguous layer a cyan, magenta and yellow quinonecoupling dye respectively. The assemblage may contain a polymeric acid layer and a timing layer to delay the reduction in pH caused by the polymeric acid layer. The silver halide emulsions may be negative or direct-positive.
Patent GB-1056051-A (GB)
Title: Improvements in or relating to nestable trays
Inventor: RUDD GERALD ARTHUR
IPC: B65D85/32
Filed: 1963-12-24
Abstract: 1,056,051. Egg flats- HARTMANN FIBRE Ltd. Dec. 11, 1964 [Dec. 24, 1963], No. 50935/63. Heading B8P. A moulded egg flat or the like having rows of support posts alternating with rows of cups is characterized in that the posts are connected by hollow ribs 24 having a thickened or bulbous top 25 which minimizes contact when the flats are nested.
Patent GB-1171909-A (GB)
Title: Photosensitive Element.
IPC: G03G5/082
Filed: 1966-11-24
Abstract: 1,171,909. Electrophotographic materials. RANK XEROX Ltd. 24 Nov., 1966 [30 Nov., 1965], No. 52611/66. Heading H1K. [Also in Division C1] A binderless xerographic plate is made by the deposition from the vapour state on to a substrate of one or more A<SP>III</SP>B<SP>V</SP> compound semiconductors. The resitivity of these materials is raised to at least 10<SP>10</SP> ohm. cms. by doping with iron, cobalt, nickel, copper, silver, gold, chromium, manganese, or oxygen-or by removal of impurities from the material. Suitable supports are aluminium, steel, nickel, copper, engraver's copper, brass, bronze, or high-melting point glass. In specific examples hydrogen is passed through phosphorus trichloride and passed over heated gallium, aluminium; boron, or boron and aluminium to deposit the corresponding single or mixed phosphide on to a relatively cooler aluminium substrate. Water vapour may be incorporated in the gas stream to provide oxygen doping in the deposited material. Alternatively the heated deposit may be exposed to water vapour. Copper is the other preferred dopant. Gallium arsenophosphide is a suggested photo-conductor. It is stated that additives such as dyestuff sensitizers may be incorporated in the plates in amounts of up to 20% of the photo-conductor composition.
Patent GB-1335210-A (GB)
Title: Fermentative production of l-leucine
IPC: C12P13/06
Filed: 1970-11-05
Abstract: 1335210 L-Leucine by fermentation AJINO. MOTO CO Inc 5 Nov 1970 [6 Nov 1969] 52661/70 Heading C2C L-Leucine is produced by culturing a bacterium able to produce L-leucine and which is resistant to 2-thiazolealanine, on a medium containing carbon and nitrogen sources, inorganic salts and organic nutrients. Specified strains belong to Brevibacterium flavum and Corynebacterium acetoacidophilum.
Patent GB-1135378-A (GB)
Title: Improvements in or relating to electric circuits
Inventor: REYNOLDS JOHN SPACKMAN
IPC: G01R23/00
Filed: 1966-11-25
Abstract: 1,135,378. Frequency comparators. GENERAL ELECTRIC CO. Ltd. 21 Nov., 1967 [25 Nov., 1966], No. 53020/66. Heading H3A. Two frequencies are compared by generating two signals having a frequency equal to the difference between the input frequencies, the first signal representing the magnitude of the difference and the second the sense, the negative or positive excursion of the magnituderepresenting signal being inverted selectively in dependence upon the sense of the difference, to produce a D.C. output representing both sense and difference. As shown, an input and a reference signal are passed through frequency dividers which provide square waves of equal mark-space ratio. These waves pass to a coincidence circuit which produces a pulse train modulated in width by the difference frequency. This is filtered at 6 to produce the D.C. component of triangular waveform and this in turn is differentiated at 7 to produce a square wave the amplitude of which is proportional to the slope and thus the difference frequency but which is independent of the sense of the difference. The output of the divider 2 is also passed to a bi-stable circuit 10 so that successive half cycles allow respective sides of the bi-stable circuit to receive pulses from the divider to set the circuit to the corresponding state if it is not already there. The resulting output of the bi-stable circuit has a phase sense which represents the sense of the frequency difference and has a frequency equal to the difference. This, at 8, inverts one or other half cycle of the square wave from the differentiator 7 so that the output of 8 is a direct current having a magnitude and sense equal to the difference between the frequencies. The specification also describes a reversing switch suitable for block 8 (Fig. 3, not shown).
Patent GB-1139957-A (GB)
Title: Improvements in and relating to sprung vehicle seats
Inventor: WITTMANN JOSEF
IPC: B60N2/54
Filed: 1966-11-28
Abstract: 1,139,957. Resiliently mounted seats. GEORG FRITZMEIER K.G. 28 Nov., 1966, No. 53091/66. Heading A4U. In a mounting for resiliently supporting a tractor seat on a rearwardly inclined guide column 4, having a guide arm 3 for the front of the seat, guide tracks 7, for rollers 5 secured to the rear of the seat back, are positioned vertically in the column 4. The seat is detachably secured to roller carrying support slide (6), having an extension 29 attached to the lower ends of damper 20 and coil springs (23). The upper end of the damper 20 is attached to fixed ears 26 and the upper ends of springs (23) to inverted T-bar (24), which is vertically adjustable by means of nut 9. On removing the seat from the slide (6), it can be supported in a raised position by the engagement of projection 30 with the top of column 4.