baber/WOPTO huggingface dataset:
Patent GB-1357948-A (GB)
Title: Method of manufacturing saw blades
IPC: B23D63/00
Filed: 1971-09-28
Abstract: 1357948 Making saws; grinding S TAKIGAWA and M TAKIGAWA 28 Sept 1971 [20 Oct 1970] 45230/71 Headings B3A and B3D [Also in Division B5] A saw blade is made by forming four differently oriented series of cuts a-d extending inwardly from one edge of a blank 1, the cuts in each series being parallel to each other and spaced from each other by double the pitch of the teeth formed. A first series of parallel cuts (a) (Fig. 4, not shown) are formed in a chromium plated and hardened tool steel blank 1 of wedgeshaped cross-section by a single or number of grinding wheels 2a, each of which is sprayed by an oil or soap solution. Further series of cuts b, Fig. 5, c, Fig. 6 and d, Fig. 7, are made by grinding wheels 2b, 2c and 2d. The angle α between the cuts and a line x in the surface of the blank 1 may be 18 degrees for the cuts (a) and b and 8 degrees for the cuts c and d or vice versa, or of equal magnitude for all of the cuts a-d. The angle # between the cuts and the surface of the blank 1 may be 45 degrees for all the cuts. The sharp points of the teeth are removed by a grinder to form cutting edges (6) (Fig. 2, not shown). The saw blades may alternatively be formed by forming the teeth in a continuous band of material and cutting the band to required lengths.
Patent GB-1061539-A (GB)
Title: Improvements in or relating to glass furnaces and their operation
Inventor: BUSBY TERENCE STANLEY
IPC: C03B5/167
Filed: 1964-11-11
Abstract: Corrosion at the upper surface 1 of a throat at the foot of a bridge between the melting chamber 5 and working chamber 7 of a continuous tank type furnace is prevented by forming facers 2 and 3 with transverse lips 6 and 8 respectively, and supplying air or nitrogen through ports 9 in the intermediate <FORM:1061539/C1/1> cover block 4. Lips 6 and 8 are rounded, and have a protective cladding of Pt alloy or Mo or one or more coatings of noble metal paint fired on. The molten glass level 11 may be controlled by making lip 6 shallower, and allowing leakage of gas into the melting chamber. Alternatively, Pt probes 12 forming part of a control circuit for the gas supply, extend through holes 13 in the cover block 4, and complete the circuit through the glass itself. The bottom surface of the throat may be in a sump, Fig. 5 (not shown), or raised above the hearths of chambers 5 and 7, Fig. 6 (not shown). The facers 2 and 3 may be stepped to receive the cover block 4, or the latter may extend across the throat in which case it may be stepped itself, Figs. 7-9 (not shown).  The lip 6 may be formed in the melting end facer 2, lip 8 being formed in the cover block 4 which may be stepped to receive facer 3, Figs. 10 and 11 (not shown).
Patent GB-1173568-A (GB)
Title: Rhodium Complexes as Oxo Catalysts
Inventor: FOSTER GORDON
IPC: C07C45/50
Filed: 1966-10-14
Abstract: 1,173,568. Square planar rhodium complexes as Oxo catalysts. BRITISH PETROLEUM CO. Ltd. 6 Oct., 1967 [14 Oct., 1966], No. 45988/66. Heading C2C. Aldehydes with substantially no alcohols present are prepared in an Oxo process which comprises hydroformylation of an olefin using CO and H 2  at a temperature of between 60‹ and 150‹ C. and a pressure less than 1300 psig. in the presence of a catalyst comprising a square planar complex of a monovalent Rhodium salt of an inorganic acid or pseudo halogen, i.e. cyanide, cyanate or thiocyanate. The complexing ligands preferably co-ordinate through phosphorus, arsenic, nitrogen, antimony, bismuth, oxygen or sulphur such as triaryl and trialkyl phosphines, pyridine, 2-methyl pyridine, 2,2<SP>1</SP>-dipyridyl, arylamines such as aniline or p-toluidine, diamines such as ethylene diamine or alkyl substituted diamines, dimethyl sulphoxide, trialkyl or triaryl phosphites, trialkyl or aryl arsines or stibines. The complex also preferably contains a Cl, Br or I ligand. The reaction may be carried out in an alcoholic solvent in which case the acetal is the product.
Patent GB-1416120-A (GB)
Title: Fuel injection pump
IPC: F02D1/18
Filed: 1974-02-13
Abstract: 1416120 Fuel injection pumps STANADYNE Inc 13 Feb 1974 [28 Feb 1973] 45993/74 Divided out of 1416119 Heading F1A Fuel for eventual filling of the pumping chamber 38 of a fuel injection pump is supplied by a feed pump 22 through a centrifugal governor controlled metering valve 134, the valve 134 being operable variably to restrict flow through a metering port 32 to an annular chamber 34 and being arranged to open a by-pass port 149 when the metering port 132 is nearly closed. Opening of the by-pass port 149 prevents over-heating by allowing the output from the feed pump 22 to return to a tank via a passage 150, an annular chamber 152, an axial passage 154 and a passage 158. The metering port 32 is triangular. The feed pump 22 is of the rotary vane type having an inlet fitting 20 provided with a strainer 104 and a pressure regulator 116. Fuel delivered from the feed pump enters an annulus 24 and flows through a passage 26 and past an electrically operated shut-off valve 28 before entering, via a passage 30, the inlet port 130 of the metering valve. The centrifugal governor includes a flyweight assembly 139 working against springs 142, 144, the latter being adjustable by a movable seat 146. Feed pump delivery is also bled through an orifice 182 to an axial passage 162 in the valve 134. From the axial passage 162 fuel spills to the annular chamber 152 past a closure 166 and because this closure 166 is subjected to the balancing forces of the flyweights and springs 142, 144, a control pressure is established in the passage 162 which is proportional to the square of the driven speed of the governor. This control pressure is used to adjust the timing and quantity of fuel delivered from the pumping chamber 38 as described in Specification 1416119.
Patent GB-1440493-A (GB)
Title: Dictation machines
IPC: G11B27/024
Filed: 1973-10-05
Abstract: 1440493 Dictation machines V STUZZI [trading as RADIOTECHNISCHER BETRIEB VIKTOR STUZZI SPEZIALUNTERNEHMEN FUR ELEKTRONIK AKUSTIK UND MAGNETTON 5 Oct 1973 [14 Nov 1972] 46672/73 Heading G5R A dictation machine is operable to record two parallel tracks on a record medium, one track HS being used for normal text and the other NS being used for text corrections and amendments, a changeover device 6 being operable to selectively connect an input signal, e.g. from a microphone 3, to a recording head 1 of track HS or to a recording head 2 of track NS, the head 1 being connected to an audio frequency signal source 8 when head 2 is connected to the input signal 3. Source 8 is preferably intermittent and is connected to an acoustical and/or optical indicator 9 when connected to head 1. An electronic time switch may disconnect source 8 from head 1 after a preset time. To find the start of an incorrect passage on track HS a switch 4 is moved from the record position shown to a replay position in which head 1 is connected via an amplifier 5 to a loud-speaker or headphones 7. Switches 4 and 6 and indicator 9 may be mounted on a hand-held microphone. A replay only unit, Fig. 3 (not shown), may be used with the completed record, the unit having two replay heads (H1), (H2) for tracks HS, NS respectively, the heads being connected via normally-disabled preamplifiers (11), (12) to a replay amplifier, a first position of a foot switch (18) enabling the preamplifier (11) for the main track HS. When the audio frequency signal superimposed on the text on track HS is heard, indicating an error and the presence of a correction on track NS increased pressure on the switch (18) moves it to a second position in which preamplifier (11) is disabled and preamplifier (12) for track NS is enabled. Similar replay facilities may be provided on the dictation recording machine. The recording may be effected by a stylus or magnetically on tape, foil, discs, rigid cylinders or sleeves.
Patent GB-1280384-A (GB)
Title: Sliding ventilator with seal
IPC: E06B7/02
Filed: 1970-10-02
Abstract: 1280384 Ventilators GRETSCH-UNITAS GmbH 2 Oct 1970 [7 Oct 1969] 46894/70 Heading F4V  A ventilator mounted over an opening 2 in a window frame comprises a frame 3 secured to the window frame and a slidable shutter 4 pressed against the frame 3 by a seal 10, which seal comprises three interconnected bars each two immediately adjacent bars forming an acute angle with one another. The centre bar of the seal 10 includes a thickened edge portion which is received in a slot 15 in the frame 3. The two outer bars may be joined to the same or opposite edges of the central bar of the seal 10, and portions of the seal may be formed of material of different elasticity. A grille 7 is provided with apertures 8. A fly screen is supported between two bars of the seal 10.
Patent GB-1098010-A (GB)
Title: Pilot governed control valve mechanism
IPC: F15B13/04
Filed: 1965-11-08
Abstract: 1,098,010. Hydraulic control circuits. HYDRAULIC UNIT SPECIALTIES CO. Nov. 8, 1965 [June 30, 1965], No. 47267/65. Heading F1P. A circuit for controlling the direction and speed of a double acting hydraulic piston 4 Fig. 1 comprises a closed centre spool valve 12 having an inlet 21, connected to the outlet of a pump 9, a return passage 33 connected to a reservoir 10, service passages 28, 29, connected to opposite ends of the cylinder 4, a main valve-controlled by-pass 74, 87, 16, 100, 31 Fig. 2 connecting the inlet passage 21 to the reservoir 10 and an auxiliary by-pass 82, 98, 97, 99, 47, 48, 49, 50 connecting said inlet 21 to reservoir 10 and including restriction means e.g. the spool 44 of a manually adjusted open centre pilot valve 13; the valve member 70 controlling the main by-pass being subjected at one side to the inlet pressure and at the opposite side to back pressure in the auxiliary by-pass generated by the restriction and which controls the degree of opening of valve 70 in accordance with the displacement of spool 44 whereby flow through valve 12 in one or other end position to the cylinder 4 is variably controlled. In operation and on moving the spool 44 to the right so as to block passage 48 and completely close valve 70, pressure in passage 47 opens a check valve 45' and gains access to a service passage 51 and to a line 53 leading to outer end of an actuator 17 which displaces the main valve spool 19 from its neutral position to its "raise" position thereby connecting the inlet 21 through a bridge passage 25 to the service passage 28 and to the head end of cylinder 4, whilst the rod end thereof is connected through passage 29 to the return passage 33; the piston 5 and rod 6 being moved at maximum speed. Reduced speed of operation is effected by so positioning the spool 44 that limited flow occurs from inlet 47 to outlet 49 through metering slots in the associated land of spool 44. Valve 70 has a skirt position 71 in which is housed a poppet valve 92 through which auxiliary by-pass portion 98 passes and which opens at an unduly high back pressure thereby venting the skirt interior to reservoir and allowing valve 70 to be unseated to relieve pressure from inlet 21. The valve 70 also acts as a "void" control valve in that it opens when pump delivery pressure falls below reservoir pressure. In a modification the main valve spool (190) Fig. 3 (not shown) may be hydraulically shifted to the left of neutral beyond its load lowering position to a "float" position at which both service passages 28, 29 are connected to the return passage; the left hand actuator 17 having a hydraulically actuated stop (109) which is withdrawn when the spool is to be moved to the "float" position. In a further modification the main valve spool (290) Fig. 4 (not shown) is movable by the pilot valve (230) to positions wherein the load is lifted at slow and fast speeds and is lowered at said speeds.
Patent GB-1482523-A (GB)
Title: Sealed containers
IPC: A61B19/02
Filed: 1973-10-11
Abstract: 1482523 Closing containers MATBURN (HOLDINGS) Ltd 2 Oct 1974 [11 Oct 1973] 47519/73 Heading B8C A container for surgical instruments or other articles comprising a body, a cap fitted to the body and closing an end thereof, a self-adhesive band wound at least twice around the container and overlying a portion of the outer surface of both the cap and the body to seal the container in a sterile manner, overlying portions of the windings being welded together so that tampering can be detected. The band has a free end folded over on itself to provide a pull tab.
Patent GB-1019636-A (GB)
Title: Heat-insulating compositions and their use
Inventor: INGHAM ANTHONY JOHN
IPC: C04B18/24
Filed: 1962-12-17
Abstract: A refractory composition comprises 50-94 parts by weight of a granular refractory material, 0.1-15 parts of an inorganic fibrous refractory material, 5-35 parts of granulated or powdered cork and 1-20 parts of a binder. The refractory material may be grog, fly ash, crushed slag, alumina, silica, titania or furnace aggregate.  The fibrous material may be asbestos, rock wool, slag wool or fibre glass.  The binder may be a clay, silicate or synthetic resin e.g. urea/formaldehyde and polyvinyl acetate or urea/phenol/formaldehyde.
Patent GB-1478810-A (GB)
Title: Detection circuits for monitoring current changes
IPC: G01R15/20
Filed: 1975-11-20
Abstract: 1478810 Monitoring rate of change of current STANDARD TELEPHONES & CABLES Ltd 20 Nov 1975 47767/75 Heading G1U In a circuit that detects the rate of change of current I c , Fig. 1, the current is repeatedly sampled by a Hall plate HE having a pulsed supply P1, T, each sample is stored on a capacitor C during the second half P3 of the sample duration P1, and each sample is compared, during the first half P2 of the sample duration, with the immediately preceeding sample already stored on the capacitor C. As shown in Fig. 1, the comparison is effected in both directions, by two amplifiers VC1, VC2, and if a sufficiently large change between two successive samples is detected a latch L is set into the corresponding one of its two states. A circuit Fig. 2 (not shown) shows the amplifier A of Fig. 1 constituted by a long-tailed pair (T1, T2), the switch SW constituted by further transistors (T3 to T6), and the comparator constituted by another longtailed pair (T7, T8) having its output stored on a further capacitor (C2) so that an output voltage equal to the difference between successive pairs of samples is available.
Patent GB-479769-A (GB)
Abstract: 479,769. Light-current relays. AUTOMATIC ELECTRIC CO., Ltd., (in Liquidation). and WOODLAND, C. R. Aug. 10, 1936, No. 22037. [Class 38 (v)] In a telephone relay, the armature 12 is arranged to engage directly the outer end of the fixed core 15, but in order to prevent sticking between the armature and core, a spring-pressed plunger 20 carried by a member 17 attached to the armature engages the coil cheek 23 just prior to the operation of the relay contacts so producing a substantial increase in the retractive force at this time. Owing to the fact that the magnetic circuit is completely closed when the armature is attracted except for the protective plating on the armature and that a copper slug or shortcircuited winding is mounted on the fixed core at the end remote from the armature a slow release of the armature takes place when the operating coil is de-energized and adjustment of the compression of the spring acting on the plunger 20 enables a consequent variation of the time period of release to be made. The winding may, alternatively, be shunted by a non-inductive resistance to delay the release of the armature.
Patent GB-1200658-A (GB)
Title: Improvements in or relating to liquid applicators
Inventor: MOORS HAROLD BERNARD
IPC: B65H1/06
Filed: 1967-10-25
Abstract: 1,200,658. Coating apparatus. INTERNATIONAL PAPER CO 25 Oct., 1967, No. 48426/67. Heading B2L. A continuous stream of flat blanks in stack form is advanced from an inlet position to an exit position at which the blanks are removed one 'by one, means are provided at a first intermediate position for pre-heating selected edge portions of the blanks, and means are provided at a second intermediate position downstream of the first intermediate position for applying water-repellant coating to said heated edge portions. An applicator roller 9, made from felt or other absorbent resilient material, is fast with a shaft 10 journalled in bearings 11 slidably mounted in apertures 12 formed in respective side walls 8. Springs act on bearings 11 to bias roller 9 against a vertical surface of a stack E of flat blanks. Roller 9 is partially immersed in a trough 7 of wax-like repellant coating material maintained in liquid form by heating elements 38 controlled by a thermostat 39. A block 18, slidably mounted above roller 9 on rollers 19 carried by walls 8, is heated by elements 40 controlled by a thermostat 41, and partly encloses roller 9. Block 18 is connected by a lug 22 to the piston rod 25 of an air motor 23 carried by a bar 24 interconnecting the walls 8. During operation, when blanks are withdrawn one by one from the bottom of stack E, motor 23 is energised to shift block 18 rightwards for engaging a vertical surface 20 of block 18 with said vertical surface of stack E in advance of roller 9. The edges of the blanks are thereby preheated before being coated by contact with roller 9, to which rotation is impparted by the downward movement of the blanks. On cessation of operation, motor 23 is energised to shift block 18 leftwards into engagement with a stop screw 27, when an extension 21 of block 18 engages stop screws 35 carried by arms 31 rigid with the respective bearings 11. Roller 9 is thereby also moved leftwards to close a microswitch for energising a motor to rotate a driving wheel, and a friction wheel on shaft 10 is engaged with said driving wheel for rotating roller 9. Said friction wheel is coupled to shaft 10 by an overload connection allowing independent rotation of the friction wheel if roller 9 is held stationary by solidified wax in trough 7.
Patent GB-1079232-A (GB)
Title: Manufacture and use of labels for bottles, containers, and the like
Inventor: HOFE GEORGE WILLIAM VON
IPC: B65C9/46
Filed: 1963-12-09
Abstract: 1,079,232. Labelling machines. NEW JERSEY MACHINE CORPORATION. Dec. 9, 1963, No. 48478/63. Heading B8P. [Also in Division B6] A device is provided to verify a label before it is applied to an article to ensure that the contents are correctly identified. A label web 10 is mounted on a roll at a station A and is fed by rollers 60, 61, as described in the divisional Specification 1,079,233, past a printing station B, a verification station C and a punching station D. The rollers 60, 61 effect dwell periods in the feed and any reverse feed is controlled by rollers 105, 106 so that the printed label is accurately positioned for severing by a cutting blade and die 120, 121 at a station F before it is engaged by an applicator 172 for application to an article 14. The verification markings are applied at the station B and their disposition is unique for each product label and verification is effected by photo-electric cells acting through masking plates provided with holes in corresponding positions only. Other identifying information may be printed and all such information and markings may be removed during label severing. It may be desirable to supply pre-printed label rolls also provided with identification markings. In a modification, Fig. 19 (not shown), draw rolls (56) feed the web to form a loop between rolls (59) subjected to an air jet (49) while the feed is controlled by electric sensing means (82), (83) to keep the tension free loop within high and low limits. An imprinter (15) is controlled by an interlock switch (16) momentarily opened after each feeding cycle by a cam (18) and provides registration and verifying markings. Step-by-step feeding to the cutting station is effected by rolls (60) intermittently engaging a segment (175) oscillated by a cam (180) under the control of a solenoid (186) actuated by a switch (197) opened by a cam (196) on the main drive shaft to cause feeding which is stopped when registration markings are sensed by a scanner (39). A severed label is transferred by a drum (189) to a drum (193) which applies it by rotating the article (191).
Patent GB-1006222-A (GB)
Title: Improved yarn separator for knitting machines
IPC: D04B15/38
Filed: 1963-12-10
Abstract: 1,006,222 Knitting machines. GEORGES LEBOCEY & CIE. Dec. 10, 1963 [Dec. 11, 1962], No. 48783/63. Heading D1C. A yarn separating device particularly for a multi-feed circular knitting machine comprises plates 15 arranged on each side of the paths of yarns 6, 7 from spools 1, 2 mounted on the ring 3 to needles 4, 5 through hooks 8, 9, 10 and guides 11, 12. The plates 15 of wood, metal or plastic prevent the yarns from becoming tangled and may be fixed to an upper ring 14 of the machine.
Patent GB-1450781-A (GB)
Title: Process for the manufacture of 9,10-seco-oestrane derivatives
IPC: C07C69/01
Filed: 1973-10-22
Abstract: 1450781 9,10 - Seco - estrane derivatives SCHERING AG 22 Oct 1973 [25 Oct 1972] 49103/73 Heading C2C 9,10-Seco-estrane derivatives of the formula wherein n is 1 or 2; R 1  is C 1-4  alkyl; R 2 , R 3  and R 4  are each H, alkoxy or acyloxy; X is free or ketalized carbonyl or free, esterified or etherified -CH(OH)-; and Y is carbonyl or dialkoxymethylene (which are novel when n is 1) are prepared by condensation of compounds of the formulae where Z is Cl, Br or I, in the presence of a base. If X in the starting material is free hydroxymethylene it is advantageous to react that group which ethyl vinyl ether before the reaction to give a 1-ethoxyethyl ether which is hydrolysed to the free OH group after the condensation. Products wherein Y is carbonyl may be ketalized. Specification 1,450,782 is referred to.
Patent GB-1259936-A (GB)
Title: Cooling of a dynamo-electric machine rotor
IPC: H02K9/02
Filed: 1970-10-16
Abstract: 1,259,936. Cooling dynamoelectric machine rotors. SIEMENS A.G. 16 Oct., 1970 [17. Oct., 1969], No. 49361/70. Heading H2A. At each end of a salient pole rotor for a dynamo-electric machine the radially innermost . but not outermost portions of the air gaps 4 between the poles 1 are closed by separate shields 5 whereby in each gap air can flow along the rotor and then away from its axis. Intermediate partitions 7 may also be provided, and the shields and partitions, of brass, plastics or non-magnetic steel, are notched into extensions 3 of the winding 2, and are adjustable along the rotor by means of their radial securing bolts not shown. Surrounding the rotor is a stator whose winding and/or core may be liquidcooled.
Patent GB-1469263-A (GB)
Title: Potentiometer
IPC: H01C10/28
Filed: 1974-11-14
Abstract: 1469263 Potentiometers XEROX CORP 14 Nov 1974 [10 Dec 1973] 49373/74 Heading HIS An insulating part-spherical member 3 and a relatively fixed insulating ball 12 have spiral resistive strips 5, 13 on their inner and outer surfaces respectively, the strips being contacted by conductive ball bearings 21, 51 carried by a second part-spherical member 8, so that when member 8 is rotated the resistances of the strips between bearings 21, 51 and respective terminals 14, 6 can be varied either together or independently. As shown, member 8 is conductive and earthed, and is positioned by insulating bearings 22, 31, 32, 41, 42, 52 in addition to conductive bearings 21, 51. The ball 12 is supported by a centering compression spring arrangement 17. The potentiometer may be used in association with the X and Y co-ordinate positions of a marker on a CRT screen.