baber/WOPTO huggingface dataset:
Patent GB-1198839-A (GB)
Title: Improvements relating to Roof Supports for Mine Workings
Inventor: GROETSCHEL KARL MARIA
IPC: E21D23/00
Filed: 1967-11-16
Abstract: 1,198,839. Advancing mine roof supports. K. M. GROETSCHEL. 16 Nov., 1967 [16 Nov., 1966; 15 March, 1967], No. 52128/67. Heading E1P. In an advancing mine roof support assembly comprising an outer frame disposed on either side of an inner frame with an advancing jack 55 interconnecting some for selective advance is parallel the roof structure 27 of the outer frame is of rectangular configuration with at least its forward portion downwardly cranked to accommodate the roof structure 32 of the inner frame and both roof structures project forwardly. of the base to support  the mine roof overlying the conveyor. The assembly is also provided with shields 16, 17, guide devices 40, 41 and a steering device 44 operable by a jack 47, 48 acting on a lever 50 having retaining means 52, 53. The inner frame is connected by rods 60 to conveyor which is advanced by a ram 90 pivotally connected to the outer frame. In a modification, see Figs. 4 and 5, (not shown), the roof structure of the inner frame is provided at least at the forward end thereof with a pivotal, roof-engaging plate adapted for relative longitudinal advancement and, if desired, predetermined angular positioning. Specifications 1,037,920, 1,168,792 and 51724/67 are referred to.
Patent GB-1182010-A (GB)
Title: Improvements in or relating to high pressure gear pumps
IPC: F04C15/00
Filed: 1967-11-16
Abstract: 1,182,010. Gear pumps. MAAG GEAR WHEEL & MACHINE CO. Ltd. Nov.16, 1967 [Dec.23, 1966], No.52154/67. Heading F1F. A gear pump comprising inter-meshing gears 2, 3, Fig.1, whose opposite faces are sealed by laterally displaceable sealing surface means having surfaces remote from the gears subjected to hydraulic pressure wherein the sealing surface means comprise flexible sealing plates 10, 11 disposed against each lateral surface of the gears between the gears and bearing plates, 8, 9 and formed with recesses 17, 18, Fig.2, connected by a passage 19 to the high pressure chamber of the pump and extending around those areas of the toothed peripheries of the gears subjected to high pressure.
Patent GB-1326720-A (GB)
Title: Vibratory massaging method and device
IPC: A61H23/00
Filed: 1971-11-10
Abstract: 1326720 Massaging device G F KOLBEL 10 Nov 1971 [10 Nov 1970] 52256/71 Heading A5R A vibrator for massaging folds of skin fingers &c comprises massaging components 1 and 2 in the form of curved tongs, the component 1 being vibratable towards and away from the component 2 by means of a vibrator drive. The position of the component 2 may be adjusted to alter the size of the gap between the operating ends 3 and 4 of the components which are easily removable.
Patent GB-1450052-A (GB)
Title: Electric pulse generating equipment
IPC: H03K3/57
Filed: 1972-11-14
Abstract: 1450052 Transistor pulse generators AEC ELECTRIC FENCING Ltd 13 Nov 1973 [14 Nov 1972] 52602/72 Heading H3T A capacitor 13 is charged by an oscillator 8-9-10-11, and discharged into a pulse transformer 16 by a thyristor 17 at intervals determined by a unijunction oscillator 2-3- 4-5-6-7. The transformer 16 secondary provides high voltage pulses to a protective fence. A neon 14 indicates if the device is working. A diode 12 provides the rectified current to charge C13.
Patent GB-1469970-A (GB)
Title: Process for purification of argon from oxygen
IPC: B01D53/00
Filed: 1974-12-05
Abstract: 1469970 Argon LENINGRAD TEKHNOL INST KHOLODIL PROMYSHLENN 5 Dec 1974 [6 Dec 1973 26 April 1974] 52749/74 Heading C1A Oxygen is removed from argon by passing a liquid mixture thereof at 1À5-30 kp./cm.<SP>2</SP> through synthetic A-type zeolites having a pore size of 2À8-4À2  and a temperature of 87-140 K. and thereafter desorbing the oxygen from the zeolite by reducing the pressure to atmospheric and finally evacuating to a pressure of 1-10<SP>-2</SP> mmHg to remove residual traces of oxygen. The zeolite may be heated to 250- 300 K. between the desorption and evacuation steps. Stepwise changes in temperature during the adsorption stage are described.
Patent GB-1427838-A (GB)
Title: Invalid car hoist
IPC: A61G7/10
Filed: 1973-11-14
Abstract: 1427838 Invalid lifting device on cars T PARRY 30 Jan 1975 [14 Nov 1973] 52773/73 Headings B8E and B8H A hoist for lifting invalids into and out of a car 18 comprises a guide tube 10 adjustably securable by stirrups 15, 16 and clamps 19 to the gutter 17 of a car roof in which slides a bearer tube 25 by means of rollers 22, 27. The tube 25 supports by way of a drop arm 30 and a scissors-jack 38 a beam 32 to a swivel bolt 34 of which a harness 35 can be attached. Fig. 1 shows the scissors-jack 38 actuated by a handle 39 to raise an invalid from the car seat from which position the bearer 25 can be withdrawn from the guide 10 by way of rollers 22, 27 until the invalid is withdrawn to a position over a chair on to which he can be lowered by actuation of the jack 38. A reverse procedure is used to put an invalid into the car. When not in use the beam 32 is swung in the direction P until the hoist can be retracted in the guide 10 so that the arm 30 can drop behind a rest 40.
Patent GB-1281369-A (GB)
Title: Improvements in and relating to logic units and analog to digital converters comprising the same
IPC: H03M1/00
Filed: 1969-10-28
Abstract: 1281369 Logic units for analog/digital converters TELEFONAKTIEBOLAGET L M ERICSSON 28 Oct 1969 [29 Oct 1968] 52846/69 Heading G4H In an analog/digital converter of the type in which reference levels are successfully compared with the analog input in a discriminator (D, Fig. 1, not shown), the reference level at each comparison depending on the result of the previous comparison, the reference levels are selected under the control of the logic circuitry of Fig. 3. As described bi-stables V4, V3, V2, V1 are successively set, the first V4 by a clock pulse KO and the remainder by the "1" output of the next higher bi-stable sequentially enabling AND gates A33, A23 to prime AND gates A31, A21 so that succeeding clock pulse passes the enabled gate to set the associated bi-stable. If after, for example, the second comparison the discriminator output is "1", bi-stable V3 remains set since gate A32 is disabled. If however the discriminator output is "0" gate A32 is enabled so that at the next clock pulse primed gate A30 is enabled to reset the bi-stable V3. The bi-stables control binary weighted reference sources which are accordingly fed to a summer (S, Fig. 1, not shown), when the associated bistable is in its "one" state.
Patent GB-1165983-A (GB)
Title: Improved Thermosetting Resinous Articles
IPC: B32B27/00
Filed: 1967-11-21
Abstract: 1,165,983. Epoxy resins. DOW CHEMICAL CO. 21 Nov., 1967 [21 Nov., 1966], No. 52965/67. Heading C3B. Synthetic resins which pass through a " B- stage," i.e. a partially cured stage at which they are still softened by heating (especially epoxy resins) are stretched whilst still in the " B-stage " before curing to a rigid infusible state. The stretching which may be monodirectional or biaxial may be achieved by applying sufficient pressure, e.g. fluid pressure, to cause the partially cured resin to flow and maintaining such pressure until the body no longer flows or deforms. The resin may be first applied to a film of synthetic resin, e.g. polyethylene terephthalate, before stretching.
Patent GB-1404079-A (GB)
Title: Vice assembly for a key cutting machine
IPC: B25B1/06
Filed: 1973-11-20
Abstract: 1404079 Key-cutting machine; workholders COLE NATIONAL CORP 20 Nov 1973 [20 Nov 1972] 53833/73 Headings B3K and B3B A workholder 20 for a key-cutting machine 11 comprises a first vice 21 for holding a master key 31, and a second vice 22 for holding a key blank 32, the vices being mounted on a frame 23, and each vice comprises a first jaw 36, Fig. 4, movable relative to a second jaw 39, a beam spring 43 extending between the first jaws and means 48, Fig. 7, adapted to deflect the spring so as to move jaws 36 towards jaws 39. Means 48 comprises a toggle 50, Fig. 7, actuated by a handle 51 to urge spring 43 against springs 44 so as to move jaws 36 to clamp the master key and blank, and a handle 67, Fig. 4, with cam and follower 65, 66, actuates gauges 64 mounted on pins 41 so as to set the keys 31, 32. Further shoulder gauges 70, Fig. 3, are provided and each of these gauges is pivoted about a pivot 71 so as to engage a shoulder on the key, by a spring 74 and the gauge is retracted when handle 51 is moved downwardly, Fig. 3, to raise a plate 55 which pivots a retract lever 77 to engage a ledge 78 on the gauge. A stylus 33 is provided and a cutter 16 and burr-removing brush 18 are rotated by a motor (15), Fig. 1 (not shown).
Patent GB-1239801-A (GB)
Title: Production of alk-1-en-6-ones and cyclised derivatives thereof
IPC: C07C49/203
Filed: 1968-11-15
Abstract: 1,239,801. Unsaturated ketones. BADISCHE ANILIN- & SODA-FABRIK A.G. 15 Nov., 1968 [17 Nov., 1967], No. 54206/68. Heading C2C. Alk - 1 - en - 6 - ones and cyclized analogues thereof in which pairs of valencies are linked to form rings are prepared by heating alk-l-en- 4-ols or cyclized analogues thereof at 100- 400‹ C. with a ketone which bears at least one hydrogen atom on a carbon atom adjacent to the carbonyl group. Examples prepare 2- methylhept - 1 - en - 6 - one from acetone and 2 - methylbut - 1 - en - 4 - ol, hept - 1 - en - 6- one from acetone and but - 1 - en - 4 - ol, and 2,5 - dimethyloct - 1 - en - 6 - one from diethyl ketone and 2 - methylbut - 1 - en - 4 - ol.
Patent GB-1487238-A (GB)
Title: Corrugated horn with a device for extracting divergence-measuring modes
IPC: H01Q13/02
Filed: 1974-12-17
Abstract: 1487238 Waveguides THOMSON CSF 17 Dec 1974 [20 Dec 1973] 54502/74 Heading H1W [Also in Division H4] A corrugated horn for use within an antenna arrangement mounted, e.g. on a space craft, is excited in multimode fashion, to produce divergent radiated beams which may be used for monopulse tracking radar, by propagating a hybrid fundamental mode and conveying odd inodes derived therefrom. In Fig. 3, the circular or rectangular horn has circumferential grooves 2 having depth of the order of a quarter of the wavelength of operating frequency of the horn, the grooves being spaced apart predetermined distances not exceeding ¢ the wavelength of the operating frequency. The fundamental hybrid mode HE 11  propagates as at 3, and a series of probes 5, 6, &c. are arranged circumferentially and symmetrically in grooves 2 to couple with higher order difference signal measuring modes, e.g., TE 21 , TM 0  in the guide. The probes may be current loops whereby it is stated that the TE 01  may be excited. Probes may be connected into a short circuited coaxial feed lines 13, positioned symmetrically around the horn 4 to form a directional radiating array. Since longitudinal wall currents are suppressed, coupling into the horn may be made by slots A, B, C and D, Fig. 8.
Patent GB-1476250-A (GB)
Title: Vehicle having a body incorporating an energy absorption installation
IPC: B60R19/00
Filed: 1974-12-23
Abstract: 1476250 Collision protection in vehicles DR ING hcF PORSCHE AG 23 Dec 1974 [22 Dec 1973] 55476/74 Heading B7B Hollow components of a vehicle body contain explosive charges which are automatically detonated in the event of a collision to deform the hollow components in a way which increases their capacity to absorb energy. As illustrated, a rectangular bearer 7 and hollow wall components 8 and 9 contain charges 17, 25 and 26 which are connected via an ignition device 20 to trigger mechanisms 18 and 19. Mechanism 18 is actuated by severe deceleration, whereas mechanism 19 is actuated by movement of a bumper 5.
Patent GB-1399877-A (GB)
Title: Solderability testing
IPC: B23K1/00
Filed: 1972-12-02
Abstract: 1399877 Testing solderability HONEYWELL INFORMATION SYSTEMS Ltd 3 Dec 1973 [2 Dec 1972] 55755/72 Heading G1S The solderability of a through plated hole in a printed circuit board is measured by applying solder to one end of the hole and measuring the time taken for the solder to travel to the other end of the hole. The circuit board 20 is centred on a platform 11 using a stainless steel probe 22 and clamped in position. The probe is then positioned with its tip level with the top of the circuit board. A stainless steel piston 33 is secured to the platform 11 with its tip adjacent the circuit board and is provided with a heater 35 controlled according to the output of sensor 34. Molten solder is maintained in a pot 30 having a heating coil 31 and a thermostat 44. To start the test, a hydraulic actuator 12 raises the pot 30 to force solder up through the piston 33 into contact with the circuit board. When the solder reaches a contact 45, which contact may be separate from the board or part of the printed circuit thereon, the actuator is halted, and a timer 40 is started. When the solder contacts the probe 22, the timer is stopped and the actuator lowers the pot 30. The timer may be arranged to lower the pot 30 and provide an "unsolderable" indication if the solder does not contact probe 22 within a predetermined time. Pneumatic means may be provided for blowing the solder out of the hole. The probe 22 may be mounted on a spring spider which automatically positions the tip of the probe at the correct height but which allows the probe to move vertically for centering the circuit board. The piston 33 and pot 30 may be fixed relative to each other, a piston being provided at the bottom of pot 30 for raising the solder.
Patent GB-1072164-A (GB)
Title: Improvements in or relating to agricultural vehicles
IPC: A01D90/02
Filed: 1964-05-25
Abstract: 1,072,164. Collecting cut crops. JOSEF DECHENTREITER MASCHINENFABRIK G.m.b.H. May 25, 1964 [May 27, 1963; July 5, 1963], No. 55890/66. Divided out of 1,072,162. Heading B8E. Loader 4 is towed by a tractor and gathers cut crops by means of pick-up device 2 which feeds the crop to feeding device 3 which discharges it into machine 4, in the manner set forth in Specification 1,072,162.
Patent GB-1397788-A (GB)
Title: Arrangement of panels for constituting display units and  similar
IPC: G09F1/00
Filed: 1972-12-06
Abstract: 1397788 Display stands GLORY CARPEL 6 Dec 1972 56394/72 Heading G5C Double-walled display panels have a cut 4 in the rear sheet 2 at each corner to define tongues 5 which may receive a blade 10 of a component by which two or more panels may be interconnected to form an extended surface. Grooves 8 in each component receive and support a panel corner, and a hook 11 on each blade 10 engages behind bottom 4a of a cut 4. Supports 13 for the connected panels have lugs which are received and held by holes 14 in components such as B and D.  In another form, the rear sheet of each panel has a central cut-out tongue apertured to receive supporting upright posts 24 formed collapsibly from folded cardboard.
Patent GB-1150179-A (GB)
Title: Electrostatic Recording Method and Apparatus.
IPC: G03G15/32
Filed: 1966-12-19
Abstract: 1,150,179. Electrostatic signal recording; transistor pulse circuits. RANK XEROX Ltd. 19 Dec., 1966 [27 Dec., 1965], No. 56661/66. Headings H3T and H4F. In the electrostatic recording of signals, Fig. 2, during the relative movement between a stylus and insulating record medium, e.g. in facsimile or alphammeric apparatus, a loss of resolution occurs due to the finite size of the stylus as a consequence of which a signal pulse of duration t produces a recording of width vt + W, as illustrated in Fig. 3, where v is the velocity of the relative movement and W is the width of the stylus. In accordance with the invention the recordings are arranged to be of the correct width vt, Fig. 5 (corresponding to a stylus of infinitely small dimension) by causing the trailing edge of each record pulse to be followed immediately by a pulse 40 of reversed polarity, Fig. 4, which substantially neutralizes the charges due to the record pulse which are still under the stylus. In the example disclosed the record pulse has an amplitude of 1200 volts, i.e. an amplitude greater than a threshold amplitude sufficient to effect charge transfer, whilst the neutralizing pulse has an amplitude of 200 volts which is less than the threshold amplitude. In practice, the neutralizing pulse, although of less amplitude than the threshold, may produce a residual charge opposite to the record charge. A circuit for adding the neutralizing pulse to the record pulse, Fig. 6, comprises a pulse transformer T-1 which is energized from the record pulse via transistor Q-5 and which "rings", when the transistor ceases conduction at the termination of the pulse, to add a reverse polarity overshoot. To permit the translation of record pulses which have durations too great to be transmitted by transformer T-1, the record pulses are applied to modulate on and off a multivibrator Q-2, Q-3 and the output from the multivibrator drives transistor Q-5 via transistor Q-4. Each record pulse produces a train of multivibrator pulses, the spacing between the multivibrator pulses being such that the resulting recordings cannot be resolved, only the neutralizing pulse of the last pulse in the train being effective. The multivibrator is normally inoperative with transistor Q-2 cut off by bias obtained from diode network CR-1, CR-8. The record pulses are applied via transistor Q-1 to back bias the diodes and allow the multivibrator to oscillate. An alternative circuit is referred to in which a one-shot multivibrator is triggered on the trailing edges of each record pulse and supplies a reverse polarity pulse to the stylus.
Patent GB-1212187-A (GB)
Title: Improvements in or relating to hydraulic transmissions for vehicles
Inventor: HUGGINS JOHN
IPC: F16H39/00
Filed: 1966-12-21
Abstract: 1,212,187. Hydrostatic transmissions. LANSING BAGNALL Ltd. 11 Dec., 1967 [21 Dec., 1966], No. 57259/66. Heading F2D. An hydraulic transmission for an industrial lift truck has a variable displacement pump feeding a fixed displacement motor, the high pressure system 12 connecting the pump and motor being loaded or unloaded by a by-pass valve 10, 11 controlled by the low-pressure oil system of the truck I.C. engine whereby, on starting the vehicle engine, the pressure in the low-pressure oil system is increased, in line 22, to force a piston 20 and an integral plunger 14 against a spring 15 so that ball 10 can seal its seat 11 to close the high pressure system 12 and load the transmission, stopping of the vehicle engine allowing the spring 15 to move the piston and plunger to unseat ball 10 and unload the transmission. The reversible transmission unit is controlled by a hand throttle for the engine and a combined pedal-operated speed and direction controller connected by a link (30), Fig. 1 (not shown), and servo-valve (27) to the transmission. The transmission may be loaded when the engine is stopped by a manually operated lever 16 linked to the piston 20 by a pin and slot connection 18, 19 to withdraw the piston and close the valve 10, 11 to lock up the transmission for part braking. A micro-switch 24 incorporated in the starter motor circuit is actuated by the lever 16 when it is operated, to prevent engine starting with the transmission loaded.
Patent GB-1368247-A (GB)
Title: Timer systems
IPC: H03K3/64
Filed: 1971-12-03
Abstract: 1368247 Transistor pulse generators ANDERSON MAVOR Ltd 3 Dec 1971 [4 Dec 1970] 57659/70 Heading H3T  A timing circuit L1 controls the period for which a pulse generator L2 supplies pulses to a switch Tr2 controlling a transformer Tx1. A capacitor C1 is charged by R2 via a relay contact RL1A controlled by switch S, and subsequently connected through contact RL1B to energize a unijunction oscillator Tr1 whose output produces pulses until C1 has discharged. A monostable L3 shapes the pulses before supplying them to Tr2 and Tx1. A rectifier in the transformer secondary keeps a relay RL2 energized until the pulse train ends. Thus failure of any transistor can only produce a shorter time of operation of RL2 than the intended time.
Patent GB-1284467-A (GB)
Title: Diesters of bis-hydroxyethyl terephthalate
Inventor: WINNICK CHARLES NATHAN
IPC: C07C69/82
Filed: 1969-11-26
Abstract: 1284467 Diesters of bis-hydroxyethyl-terephthalate HALCON INTERNATIONAL Inc 26 Nov 1969 [29 Nov 1968] 57798/69 Heading C2C Diesters of formula wherein R is hydrogen or an alkyl group having 1-3 carbon atoms, are prepared by reacting terephthalic acid with a diester of formula R-COO-CH 2 -CH 2 -OCO.R, wherein R is same as above, in the presence of an acid catalyst. The preferred catalyst is a Bronsted or Lewis acid and the reaction is suitably carried out at a temperature of from 100‹ to 275‹ C.
Patent GB-1286868-A (GB)
Title: Conveyor device for sheet materials
IPC: B65H29/70
Filed: 1969-12-01
Abstract: 1286868 Delivering sheets TELEFUNKEN PATENTVERWERTUNGS GmbH 1 Dec 1969 [30 Nov1968] 58522/69 Heading B8R A device which imparts a curvature to sheets 2 being delivered to a table 1 comprises a guide plate 12 having a ribbed central portion 12<SP>1</SP> and two sprung guide members 16. A relatively thin sheet forwarded by rollers 13 and 14 is forced to adopt the shape depicted at 2a with the guide members in positions 16a whilst a relatively thick sheet adopts the shape 2b with the guide members in positions 16b. Extensions 12<SP>111</SP> serve to impart an upward curvature to the edges of the sheets. Table 1 is lowered as the sheets accumulate as detected by feeler 5 and light barrier 6.