baber/WOPTO huggingface dataset:
Patent GB-1267725-A (GB)
Title: Improvements in band saws
IPC: B27B31/08
Filed: 1969-10-09
Abstract: 1,267,725. Band saws. FUJI SEISAKUSHO K.K. 9 Oct., 1969 [9 Oct., 1968; 29 Dec., 1968; 1 April, 1969], No. 49567/69. Heading B5L. A band saw includes a conveyer for automatically returning a portion of the sawn wood to the saw for further sawing, two feed rollers 17, 21, Fig. 3, mounted on horizontal shafts 16, 20 respectively, one feed roller being in front and the other at the rear of a band saw 22, and means for raising or lowering the shafts 16, 20 in unison. As described the rollers 17, 21 are supported from links 15, 18, 19 and are vertically movable by an air cylinder 24. In operation of the machine, wood 13 is advanced over idle rollers 12 until its leading end operates a limit switch 23a controlling a cylinder 26, Fig. 2. The cylinder causes a guard roller 25 to be moved against one edge of the wood and press its other edge against a guide 23. Means are also provided which enable the roller 25 to be lowered below the level of rollers 12 when the wood 13 is of great width. The rollers 12 may slope towards the guide 23. The wood 13 is then engaged by roller 21 and fed thereby to the band saw 22, the cut wood then being further fed by the roller 17. A guide plate 30, Fig. 3, supported from swingable arms 29 enters the kerf formed by the saw to guide the sawn wood until it engages and is advanced by driven rollers 34. The sawn wood is carried by rollers 34, Fig. 6, to a position above dividing means. The dividing means comprises arms 42, 42<SP>1</SP> carrying nails 41, 41<SP>1</SP> which are moved by linkwork into the kerf of the sawn wood and then moved apart to push part 13a of the sawn wood off the rollers 34 and the other part 13b on to driven rollers 44 which feed it back to the feed end of the machine.
Patent GB-1116154-A (GB)
Title: Improvements in or relating to sealing means for electrolytic condensers
Inventor: JONES JAMES
IPC: H01G9/12
Filed: 1964-12-07
Abstract: 1,116,154. Electrolytic capacitors. PLESSEYUK Ltd. 13 Oct., 1965 [7 Dec., 1964], No. 49629/64. Heading H1M. Rubber or like elastic disc 3 of the end-seal of an electrolytic capacitor is held under compression between the outer head 7 of rivet 6 and metal sleeve 8 surrounding the rivet stem, the compression determining the internal gas pressure which when exceeded will deform the disc and allow vapour to escape between it and the rivet, as illustrated by Fig. 2 (not shown). A cup-shaped member 10, having a gas inlet 11, and an end wall clamped between the sleeve 8 and inner rivet head 9, prevents the rivet and sleeve from being ejected through the extended aperture 5.
Patent GB-1099887-A (GB)
Title: Switching circuit
IPC: H03K17/58
Filed: 1966-11-07
Abstract: 1,099,887. Semi-conductor switching circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 7, 1966 [Nov. 12. 1965], No.49755/66. Heading H3T. A tunnel diode switching circuit feeding a transistor amplifier is provided with means, e.g. backward diode 4 to isolate the tunnel diode from the input 10 when the tunnel diode is in its high voltage state. Switching of the tunnel diode 1 occurs when the input signal is equal and opposite to a reference signal 5. Transistor 15 is biased to operate in its linear region, and in order to ensure that an output signal is produced at the time that the tunnel diode switches, and not at the, less determinate, time that the input exceeds the circuit threshold, a hot carrier diode 16 is included in the coupling between the tunnel diode and the transistor. This hot carrier diode has a high impedance when the tunnel diode is in its low voltage state, and a low impedance when the tunnel diode is in its high voltage state. A number of circuits may be connected to give AND or OR operation.
Patent GB-1446733-A (GB)
Title: Soil-cultivating implements
IPC: A01B33/08
Filed: 1973-06-19
Abstract: 1446733 Soil-cultivating implements C VAN DER LELY NV 19 June 1973 [23 June 1972] 50111/75 Divided out of 1446731 Heading A1B The subject matter is identical with that disclosed in Specification 1446731 but the claims relate to the attachment of the rotary supporting members, i.e. the roller (26A) and wheel (35) to the machine frame, Fig. 1 (not shown).
Patent GB-1413534-A (GB)
Title: Coded record method of encoding and method of and system for interpreting the record
IPC: G06K7/01
Filed: 1972-11-02
Abstract: 1413534 Coded record and reading system MONARCH MARKING SYSTEMS Inc 2 Nov 1972 [16 Nov 1971] 50595/72 Heading G4M Bar codes on a record are arranged with alternating characteristics with each bar having three possible widths. Pairs of'bars of the same characteristic are used to represent bits and seven bars are used to represent a character (Fig. 2, not shown) in a three out of five code. A record is read using a hand held reader (Fig. 1, not shown) and data from the reader feeds an A/D converter 506 to set or reset a flip-flop 508 depending on whether a black or white bar is read. The black signal sets or resets a flip-flop 521 to alternately enable AND gates 528, 537 and resets counters 531, 533. For the duration of a black bar clock pulses are counted in one of the counters and for the duration of the following black bar are counted in the other counter. The contents of one counter and the inverted contents of the other counter are added to determine relative width and an indication of the result is fed to an exclusive OR gate receiving the reset output of flip-flop 521. The output of the exclusive OR is fed to shift register 522 via AND gate 550 enabled by the white output of flip-flop 508. A similar circuit, Fig. 5B, measures and compares the width of the white bars. Data is preceded by a START code and followed by a STOP code. If these are read in reverse the contents of the shift register are inverted and supplied in reverse to provide the correct signal. Overflow of the counters is detected to signify an error and the number of bars and the correct coding are checked to determine errors.
Patent GB-1419262-A (GB)
Title: Electromagnetic actuator
IPC: F16K31/08
Filed: 1972-11-02
Abstract: 1419262 Valves FLUID DEVICES Ltd 2 Nov 1973 [2 Nov 1972] 50624/72 Heading F2V [Also in Division H1] A magnetic actuator (Figs. 1, 2) comprises a slidable armature 1 in a diamagnetic tube 6 sealedly attached to stationary polepieces 2, 3; the armature movement being transmitted to, e.g. a valve by a diamagnetic thrust pin 5 and the base-plate 7 attaching the assembly to, e.g. a casing. A steel sleeve 8 with endpieces 9 surrounds the tube and polepiece assembly and also a bobbin 10 with separate windings on parts of the bobbin interconnected by four webs 12 which retain four sector shaped ceramic radially magnetized machined permanent magnets 13 generating a total field radial to the assembly axis; the magnets previously being magnetized while closely fitted to a long central mandrel forming one pole and an outside annulus forming the other. Series energization of the coils is applied over connector 14 with terminals 15, 16 and earth pin 16, and the coil assembly is removable by detecting retaining nut 17. Integral rectifiers may be inserted in cavities of connector 18 for A.C. operation. On de-energization, the armature 1 is as shown in upper position and the flux of the magnet 13 circulates as shown over double and single arrow paths to retain the armature against upper polepiece 2. On D.C. energization of windings 11a, 11b a flux is developed along a triple arrowed path to oppose the holding flux and impel the armature downwards to the opposite polepiece 3. On de-energization the armature is retained magnetically in the lower position by the excess flux therein, and is reversible by further energization of windings 11a, 11b in reverse polarity. For A.C. operation, the windings are series energized through alternately switchable opposed pole rectifiers (Fig. 3, not shown) and for D.C. operation the windings are separately switchably energized using one for each sense of movement with a common return (Fig. 4, not shown). In a modification to actuate a bi-stable pilot valve (Fig. 5) polepieces 31, 32 extend from each end into the armature tube 6 and have valve orifices; that of polepiece 31 being a bore 33 in a central projection communicating with a first fluid connection 34 while polepiece 32 has axial bore containing an, e.g. ferromagnetic adhesively retained coaxial tube 35 whose lower end 36 exceeds the remainder in diameter. The upper end is connected to a second a fluid connection 37 over transverse bore 38, and the tube is also surrounded within the polepiece by annular duct 39 connected to a third fluid connection 40 over transverse bore 41. Armature 42 has a stepped central bore with a rubber valve seat 43 at each end and is radially grooved in its end faces and longitudinally grooved of its periphery, so that connection 40 and annular duct 39 communicates with the space within which the armature moves, and alternatively with connections 34, 37 dependently on the armature position.
Patent GB-1393520-A (GB)
Title: Method of and composition for raising the protein content of green fodder
IPC: A23K3/02
Filed: 1972-07-25
Abstract: 1393520 Protein enrichment of green fodder AGROBOTANIKAI INTEZET 25 July 1972 50688/74 Addition to 1390378 Headings A1F and A2B The subject matter of this Specification is substantially the same as that in Specification 1390378 but benzimidazole, 2 amino-benzimidazole N-methyl urea or N-isobutyl urea are disclosed and claimed as the stimulants of protein synthesis in amounts of p.p.m.
Patent GB-1208184-A (GB)
Title: Microwave transmission line and related devices
Inventor: LIND JAMES NORRELL
IPC: H01P3/08
Filed: 1968-10-28
Abstract: 1,208,184. Strip lines. NORTH AMERICAN ROCKWELL CORP. 28 Oct., 1968 [11 March, 1968], No. 50986/68. Heading H1W. In order to prevent radiation of energy from a microstrip line, the line is bordered along either side by a quarter-wave choke. The line comprises a ground-plane 16, a dielectric layer 12 and a metallic strip 44 preferably of width b = #/2. Two further strips 50 are deposited on either side of the strip 44 and two elongated dielectric layers 48 are laid so as to partially overlap the conductive strips 50 and to fill the gaps 48a between strip 44 and strips 50. The construction is completed by an overall layer 52 of conductive material which connects the strips 44 and 50 and encloses the dielectric layers 48 which thereby form L-shaped quarterwavelength short-circuited sections. The layer 12 may comprise a monocrystalline material e.g. sapphire, spinel, BeO, MgO upon which semi-conductor devices may be grown epitaxially. The layer 48 may consist of e.g. SiO, MgO, BeO, CaF or Al 2 O 3 .
Patent GB-1469091-A (GB)
Title: Liquid processing apparatus for elongate flexible elements
IPC: D06B3/28
Filed: 1975-12-12
Abstract: 1469091 Liq. treatment of textiles THIES AG 12 Dec 1975 [16 Dec 1974] 51014/75 Heading D1L Textile rope is treated with a liq. by deposition within a series of perforated drums 4, 5, 6 disposed within a pressure vessel 1 using a jet device 11, 12 or 13 fed with treatment liq., the jet introducing the textile through a control aperture in a sidewall of the drums and causing rotation of drums which are freely mounted on grooved rollers 7 located at the bottom of the vessel. The textile is withdrawn from a further aperture in the other sidewall of each drum and delivered to a succeeding drum by winches 14, 15 and 16 in front of each jet. For the treatment of continuous textile the vessel is provided with an inlet and outlet comprising a liq. head 31a, 31b and a liq. lock formed by partitions 32, 33. The lower end of each head is provided with a jet device 39, 40, receiving lock liq. from pump 36, to increase the pressure therein. The textile may be passed through successive interconnected vessels operating at different pressures. For the treatment of endless textile the rope is recycled from the last drum 16 to the first 14 via a central tube 19 passing through the apertures of each drum.
Patent GB-1510049-A (GB)
Title: Tumbler drying apparatus
IPC: D06F58/02
Filed: 1976-12-10
Abstract: 1510049 Tumbler dryer RINNAI KK 10 Dec 1976 [15 April 1976 19 April 1976] 51761/76 Heading F4G A tumbler dryer comprises a casing 1 enclosing a tumbler drum 2 and heating means, e.g. combustion chamber (4) in the base of the casing, see Fig. 2 (not shown), the casing having an apertured door 23, and an air inlet 19 remote from the heating means. The air passes down round the drum, some entering a mixing chamber 30 at 14 and the rest entering it via the chamber (4) and a duct 15. The air mixture is then passed via 16, 18 to the drum at openings 17, leaving the apparatus at 23. A motor 26 drives the drum and a fan 5, and it is stated that the respective flows of heated and unheated air into the chamber 30 may be controlled to adjust the temperature. Sealing engagement between the drum 2 and the casing 1 at 9, and the mounting of the drum 2 by a ballbearing 13 in the rear wall 12 of the casing, are described in detail with reference to Figs. 3, 5 (not shown).
Patent GB-1359138-A (GB)
Title: Electrical switches
IPC: H01H19/58
Filed: 1970-10-31
Abstract: 1359138 Mechanical switches; retractive switches JOSEPH LUCAS (INDUSTRIES) Ltd 18 Oct 1971 [31 Oct 1970] 51896/70 Heading H1N A four position switch, Fig. 1, for use with a key-operated mechanism, comprises an arcuate base 12 carrying trapezium-shaped fixed contacts 13-16, three of which may be engaged simultaneously by the movable contact 19. The fixed contacts have associated terminal pins extending through the base, an arcuate rotor plate 17 having an operating finger 17a extending through the centre of curvature of the arc along which the contacts lie and a movable contact member 19 carried by a holder 18 on the rotor, the holder being provided with a spring 21 and roller 22 arrangement which engages detents in an arcuate track formed in the body 11 of the switch to retain the rotor in the contact positions. The contact member 19 is formed with three projections arranged at corners of a triangle and so spaced as to be capable of engaging three contacts at once. The switch is secured to a key mechanism with the member 17a passing through a slot in the casing and into a recess formed in the key barrel so that the rotor plate is turned by the key, Fig. 7 (not shown). The assembly may be used as an ignition switch or in a combination of gear-box lock, ignition switch and starter switch. In the latter case, a return spring is provided and the detent omitted in the fully rotated position so as to allow the switch to return to the previous contact position after operating the starter. In the "off" position the movable contact engages only fixed contact 13 and an insulating pad may be provided next to this contact so that the movable contact is maintained level.
Patent GB-1198306-A (GB)
Title: Image Reproduction Method and Apparatus
IPC: G03G15/22
Filed: 1967-11-17
Abstract: 1,198,306. Electrostatic printing. RANK XEROX Ltd. 17 Nov., 1967 [21 Nov., 1966], No. 62322/67. Heading B6C. [Also in Divisions G2-3] A method of xerographic duplicating comprises forming an electrostatic latent image of an original on a photo-conductive surface, developing the image, transferring the developed image by heat and pressure to a support and thereafter successively redeveloping the latent image and transferring the developed image to further supports. As shown, a latent image, formed on a drum 19 by charging and exposure in known manner, is cascade developed with two-component developer material 42. A web 50 is advanced over a heating unit 54 and pressure roller 56, such that toner particles in contact with the heated web tackify and adhere to the web. The toner cools and becomes fixed before being rewound. The charging and exposure stations are rendered inoperative, such that during duplicating only development and transfer takes place. The motor 24 driving the drum 19 may run at a higher speed during duplicating. When the required number of copies have been produced the drum is cleaned at station 65 and discharged by illumination from a lamp 81 before recharging and exposure to a further original. The heating unit 54, Fig. 5, has an infra-red lamp 107 within housing 101. Pressure roller 56 is mounted in a frame 132 pivoted on a shaft 134. The roller has a resilient layer 136, e.g. a 40 Durameter siliconized rubber on a metal core, e.g. of aluminium. A spring 140, tensioned by a screw 146, urges the roller 56 against the drum surface 19. Alignment rollers 160 mounted on members 16 adjustable by screws 170 ensure proper contact of the pressure roller with the drum surface. A manually actuated cam-shaft 185 carries a cam (186), Fig. 3 (not shown), which restrains pressure roller 56, Fig. 5, against pivotal movement about shaft 134 when the drum 19 is removed. In a modification, Fig. 7 (not shown), roller (56) houses a heating lamp (107).
Patent GB-1153909-A (GB)
Title: Improvements in and relating to Spark-Gap Devices
IPC: G06K1/12
Filed: 1966-11-23
Abstract: 1,153,909. Spark gaps. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 23 Nov., 1966 [26 Nov., 1965], No. 52383/66. Heading H1X. A spark gap punching or printing device comprises ring-shaped or disc-shaped electrodes 1-4 mounted on a rotatable shaft W with intervening annular or disc-shaped insulators 8-13 providing spark tracks between the electrodes, and stationary means 31, 32, 33 for fixing the place of spark discharge between successive electrodes independently of the angular position of the shaft W. The means 31, 32, 33 shown are ignition electrodes embedded in stationary insulating bars 34, 35, 36. Capacitors 5, 6 and 7 connected between adjacent electrodes by conductive coatings 28, 29 may be omitted if the inter-electrode capacitance is sufficiently large. Connection to the electrodes 1-4 is by way of slip rings 18-21. Alternative methods of fixing the place of discharge comprise immersing the movable electrodes in an insulating liquid so that they emerge only at the desired place of discharge, or mounting the electrodes in a reservoir of compressed gas, e.g. air, having an outlet aperture providing a region of reduced pressure at which the electrodes emerge. The gas may be pre-ionized at the desired. location of discharge by a radioactive preparation or by a corona discharge. The device may be associated with a mould to enable the sparks to be used for perforating paper (Fig. 2, not shown)
Patent GB-1437996-A (GB)
Title: Thermodynamic system including vortex separating means in  combination with a pair of feedback loops
IPC: F25B9/04
Filed: 1973-11-13
Abstract: 1437996 Vapour power plant R D HAWKINS 13 Nov 1973 52523/73 Heading F1Q [Also in Division F4] Vortex tubes are employed in a thermodynamic system including a heat engine to separate input gases into a pair of relatively low-pressure flow components having higher and lower temperatures than the input flow, the components passing through a first feedback loop including the heat engine and a second feedback loop, respectively, to the vortex tubes inlet. As shown in Fig. 1, the first feedback loop comprises a primary heat exchanger 11, in which gas from the high temperature pump 15 is heated by an external source, a heat engine 12 and an adiabatic compressor 13. The pump and compressor are driven by the output shaft of the heat engine, the primary load of which may be an electrical induction machine utilized as a motor or generator of a vehicle. The second feedback loop includes a low temperature pump 16 and a low temperature heat exchanger 17. The system, apart from the heat exchanger 17, may be located in a refrigerator and the heat withdrawn therefrom is used as the input Q s  of the heat exchanger 17. In the embodiment shown in Fig. 2, the system is applied to a turbine 25 and a second vortex bank is included in the first feedback loop to provide relatively hot gas flows for vapourizing and heating the working fluid after it has been condensed into a liquid, the latent heat of vapourization being supplied as one of the scavenged heat inputs to the heat exchanger of the second feedback loop. The working fluid may be dichordifluormethane. A two-stage turbine system is described with reference to Fig. 4 (not shown).
Patent GB-1402125-A (GB)
Title: Process for the production of a devitrified glass material
IPC: C03B13/04
Filed: 1972-11-14
Abstract: 1402125 Producing devitrified glass GOSUDARSTVENNY NAUCHNO - ISSLEDOVATELSKY INSTITUT STEKLA 14 Nov 1972 52583/72 Heading C1M A devitrified glass material is produced by: forming a melt comprising CaO, MgO, Al 2 O 3 , SiO 2  and, optionally, Na 2 O, the total CaO + SiO 2  being 90-92À8% by weight and MgO, Al 2 O 3  and Na 2 O (if any) each being present up to 3% by weight; working and forming the melt to cause opacification and to yield a glass; cooling the glass to 870-900‹ C.; and thereafter, without allowing the glass to cool below 870‹ C., crystallizing the glass by heating (from 870-900‹ C.) at 5-10‹ C./minute to a temperature in the range 1050-1080‹ C., maintaining the glass at said temperature for up to 1 hour until crystallization is complete, and then cooling to ambient temperature. The melt may be worked and formed into a glass at 1410- 1450‹ C. The glass is preferably formed into a continuous ribbon, which preferably is crystallized while supported on a gas cushion or molten metal. The devitrified material may be white, or may be coloured by inclusion of one or more of MnO, FeO, NiO, CoO, Cr 2 O 3  and Fe 2 O 3  in the melt.
Patent GB-1220729-A (GB)
Title: Improvements relating to typewriting machines
Inventor: MARUM HELMUT
IPC: B41J19/70
Filed: 1968-11-07
Abstract: 1,220,729. Typewriters. VARITYPER CORP. 7 Nov., 1968 [8 Nov., 1967], No. 52883/68. Heading B6F.  A typewriter platen carriage is positioned at its left-hand margin position by returning the carriage beyond the required position and stepping the carriage forwardly to the required position. A margin stop catch 44 is releasably locked on a rack 43 bearing a scale and fixed to the platen carriage 12, and during carriage return movement engages an abutment 53 carried on a frame 51. The frame 51 is thereby moved to the right against a spring 58, rotating a shaft 60 through a crank arm 62. A second crank arm 70 is thereby pivoted, urging a rod 66 to the left after lost motion of a pin borne by the crank arm 70 within a loop 68 of the rod 66. Leftward movement of the rod 66 draws a latch arm 84 out of engagement with a rocker arm 74, permitting the arm 74 to pivot counterclockwise owing to a spring 76, and causing an eccentric wheel 78 to engage a continuously rotating wheel 79, thus causing the rocker arm 74 to oscillate about a shaft 75. A link 86 thereby oscillates a crank arm 88 which acts through a rod 90 to reciprocate a link 37 of an escapement mechanism which includes a pawl 34, a ratchet wheel 33, selectable multiple pinions 28 for variable letter spacing, and a rack 26. The escapement mechanism permits the carriage to move incrementally in the letter space direction under spring drive means (not shown) until the catch 44, which remains in contact with the abutment 53, permits the spring 58 to return the frame 51 to a position whereby the rod 66 urges the latch arm 84 back to the position preventing pivotal motion of the rocker arm 74, thereby stopping escapement action, and stopping the carriage in the left-hand margin position. The carriage stops in the position at which the catch 44 and abutment 53 first make contact. Carriage return is effected by a motor (38, Fig. 1) driving a spool (40) through a clutch (39), the spool (40) carrying a wire connected to the left-hand end of the carriage. The abutment 53 can be lowered through a rod 56 for margin release purposes.