baber/WOPTO huggingface dataset:
Patent GB-1264076-A (GB)
IPC: F02P3/08
Filed: 1970-05-27
Abstract: 1,264,076. Ignition systems. PAL MAGNETON NARODNI PODNIK May 27, 1970, No. 25376/70. Heading F1B. In a capacitor ignition device for engines with spark ignition having a storage capacitor 11 and a control circuit connected to the control electrode of a controlled rectifier 10, the control circuit which is directly fed by a battery 16 comprises a control capacitor 1 co-operating with the control electrode of the controlled rectifier 10, a Zener diode 3 and series resistors of such values that through the control circuit a current flows which is no larger than that corresponding to the inverse current through a controlled rectifier in the control circuit, the control circuit controlled rectifier 102 being controlled from the shaft of the engine for example by an optical or electromagnetic device 106, 107. An embodiment including a photothyristor is described.
Patent GB-1264456-A (GB)
IPC: A44B18/00
Filed: 1970-06-24
Abstract: 1,264,456. Cutting pile loops. W. BINDER [trading as GOTTLIEB BINDER], 24 June, 1970 [27 June, 1969], No. 30660/70. Heading D1S. Apparatus for cutting pile loops 2 of a fabric 1 into two parts 3, 4 of unequal length comprises comb-like teeth 12 onto which the loops 2 are capable of being pushed by relative movement between the fabric and the teeth, the free ends of the teeth 12 being bent so that each forms a hook 14 the curved part 16 of which has a cutting edge 17, and a knife 21 having a cutting edge 22 which extends transversely of the teeth 12 for cooperation with the row of cutting edges 17.  In one embodiment, Fig. 1, the teeth 12 are constituted by flat steel springs either integral with, press-fitted to or soldered to a back 8 to form a comb 9. The fabric 1 passes through a slot 18 in a base 5, over a guide member 6 adjustable relative to the base 5, and is removed through a slot 19 after loop cutting. The fabric may be fed either intermittently or continuously so that the springs 12 pass between the rows of loops 2 and the relevant hook 14 engages in each loop. The knife 21 reciprocates parallel to the length of the springs 12 to cut the arms of the loops 2 which are in the hooks 14, Figs. 3 and 4 (both not shown), to form hooks 3 and residual portions 4. Adjusting means (not shown) is provided for adjusting the position of at least the rear reversal point of the stroke of the knife. In a second embodiment, Fig. 5, a knife 25 rotates about an axis 20 and has a cutting edge 26 to cut the arms of the loops 2 in the hooks 14. A deflecting rod 27, adjustable in position, holds back the loops 2 before they are engaged by the hooks 14 to prevent them being cut by the edge 26.
Patent GB-1265122-A (GB)
IPC: B60P3/12
Filed: 1970-01-29
Abstract: 1,265,122. Towing trailers. TOTER Inc. 29 Jan., 1970, No. 4342/70. Heading B7B. The draw bar 2 of a tow trailer is pivotally connected to an axle 1 and to wheels 8, 10 via a linkage 16, 18, 26, 19 which causes the wheels to swivel on pivotal movement of the bar, and the support arms 28, 30 for a vehicle to be towed are pivotable about pins 40, 42 to a stowed position wherein they are connected at 44 to the bar to prevent pivotal movement thereof. Pins 40, 42 are carried by brackets 36, 38 which have inner surfaces bevelled at 56, 58, the surfaces allow arms 28, 30 to be inwardly inclined in the stowed position.
Patent GB-1265563-A (GB)
IPC: E21D9/00
Filed: 1969-08-11
Abstract: 1,265,563. Tunnelling. M & H TUNNEL & CIVIL ENG. Ltd. 9 Nov., 1970 [11 Aug., 1969], No. 34929/69. Heading E1F. A method of driving and lining a tunnel comprises jacking lining rings 24 and a shield 16 through the ground, an air-lock chamber 18 being provided immediately behind the shield and compressed air being supplied to the tunnel face 6 which is excavated. The back of a shaft 1 provides a face against which the hydraulic jacking rams 8 bear, their thrust being transmitted to the lining through a circular wheel-mounted cross head 13. The air-lock chamber 18 has doors 27, 28 and it is connected at its front to the shield by bolted flanges 21, 22 having a rubber seal 23 disposed between them, and at its rear to the foremost lining ring by bolted flanges 25, 26. Rails 29, 30, 31 are provided for skips 32, the rails 30 being movable to allow for operation of the door 28. The compressed air: is supplied through a hose 33, 37, 39, 41 having a shut-off valve 40 and a flap valve 35, a length of hose being provided for each lining ring. A pressure-relief hose and valve is also provided for the shield. The shield is guided by rams 44. Two sets of the rails may extend along the tunnel and converge at a point outside the air-lock chamber to facilitate operation of the skips.
Patent GB-1265887-A (GB)
IPC: H01H50/04
Filed: 1969-06-27
Abstract: 1,265,887. Electromagnetic sealed contact relays. C. P. CLARE & CO. 27 June, 1969 [9 July, 1968], No. 32676/69. Heading H1N. The sealed magnetic reed contact unit of an electromagnetic relay has an elongated insulating envelope 18 shaped in cross-section (Fig. 3) to extend in one direction for a greater distance than in a second direction normal thereto, and the contact unit is mounted between walls 30, 32 of a bobbin 14 so that the coil 16 on the bobbin is adjacent the housing between the walls. This provides close magnetic coupling for the contacts 20A and the coil and minimum relay dimensions in the direction of the minor axis of the elliptical cross-section of the envelope 18. The walls 30, 32 are rounded to receive the coil and recessed to accommodate the contact unit between them. Grooves 34 in the end cheeks 22, 24 of the bobbin 14 receive bent terminal members (36) which are secured to the coil ends. The relay may be mounted on a pivoted-circuit board (not shown) with longer edges of cheeks 22, 24 engaging the board.
Patent GB-1288583-A (GB)
IPC: C08J9/28
Filed: 1969-11-17
Abstract: 1288583 Vericulated polymer granules and polymer composition based thereon BALM PAINTS Ltd 17 Nov 1969 [28 Nov 1968] 56081/69 Headings C3B C3C C3P and C3R [Also in Division D2] Vericulated polymer granules have a mean diameter of at least 1 Á, the maximum diameter of the vericles is less than 20 Á, the ratio of the granule diameter to mean vericle diameter is at least 5 : 1 and the volume of the vericles is 5- 95% of the total volume of the granules. The vericles may contain up to 60% by volume of particulate solid or a liquid. The granules may be dispersed in a proportion of 5-95% by volume of total solids in a mixture of a filmforming vehicle and 0-85% of a pigment. In Examples (1-15) the granules consisted of polystyrene, styrene/divinylbenzene copolymer, a styrene/hydroxyethyl methacrylate copolymer reacted with maleic anhydride, a polyester (fumaric acid, phthalic anhydride and propylene glycol) cross-linked with styrene, an epichlorohydrin/polyamide resin, cellulose acetate butyrate; cyclohexylmethacrylate, methyl methacrylate or styrene/dimethylaminoethyl methacrylate copolymer quaternized with benzyl chloride, a chlorinated rubber and/or a vinylidine chloride/acrylonitrile copolymer: the vericulated granules were made by polymerizing monomers in aqueous media and/or organic liquids, or by dispersion of water into solutions of the polymer in organic solvents: the vericles contained aqueous liquid and rutile TiO 2  (in Examples 2, 4 and 6) and sodium pentachlorphenate (in Example 15); and the polymer of the granules was pigmented with TiO 2  (in Examples 5 and 6). In Examples (16-30) the granules were compounded with TiO 2 , propylene-glycol, a sodium aryl sulphonate, water, ethylene glycol mono-butyl ether, di-octadecyl sodium sulphosuccinate, sodium hexametaphosphate, hydroxyethyl cellulose, silica, a vinyl acetate/2-ethyl hexyl acrylate copolymer, a styrene/acrylic acid/ acrylate copolymer, petrol, ethyl acrylate/ methyl methacrylate copolymer, soya bean oil/ glycerol phthalate alkyd, xylene, styrene/butyl acrylate/hydroxyethyl methacrylate copolymer, butanol, butylated melamine formaldehyde resin, toluene, acetone, methyl methacrylate/ methacrylic acid copolymer, styrene-butadiene copolymer, benzyl butyl phthalate, sand, saturated polyester, glycol monoethyl ether acetate, a hexamethylene diisocyanate adduct, ethylene glycol acetate, an epoxy resin, a polyamide, methyl isobutyl ketone, wood pulp and/or polyethylene.
Patent GB-1288633-A (GB)
IPC: B23Q11/00
Filed: 1969-08-13
Abstract: 1288633 Spray producers MOLINS MACHINE CO Ltd 12 Aug 1970 [13 Aug 1969] 40435/70 Heading B2F [Also in Division B3] A spray apparatus for the removal of swarf from machined workpieces consists of a plurality of spaced upstanding flexible tubes 8 mounted on and supplied with fluid under pressure from a manifold 9. The manifold is moveable transversely by slides 10 sliding along rods 12, sliding movement being effected by an endless band 11 passing around pulleys such as 13 and driven by an electric motor. Limit switches at the ends of travel of the slide members can automatically reverse the direction of movement of the manifold. The tubes can be of neoprene and the fluid, air.
Patent GB-1290298-A (GB)
IPC: A61C1/18
Filed: 1971-04-19
Abstract: 1290298 Dental handpieces KALTENBACH & VOIGT 19 April 1971 [2 March 1970] 22773/71 Heading A5R [Also in Division F2] A straight or angle dental handpiece contains a driving shaft mounted in a plain bearing, the plain bearing comprising two concentrically arranged sleeves 1, 2 connected to one another, there being a thin-walled inner sleeve 2 and a larger outer sleeve 1, wherein the outer sleeve is formed of sintered metal alloy and the inner sleeve of rolled and/or drawn metal alloy e.g. copper-beryllium, and wherein the inner sleeve is provided with at least one inner axial groove 3. From the bottom 4 of the groove 3 there extend radial apertures 5 onto the inner wall 6 of the outer sleeve 1 which constitutes an oil supply chamber and allows adequate lubrication of the bearing. The plain bearing may be secured in the handle (7) of the dental handpiece or spaced apart from another plain bearing in a housing sleeve (11), the housing sleeve itself secured in an intermediate sleeve (8) between elbow (9) and head (10) of a dental handpiece. Bearings (15), (16) support an intermediate shaft (12), which at each of its ends has toothed wheels (13), (14) engaging corresponding toothed wheels of the respective connecting shafts.
Patent GB-1295298-A (GB)
IPC: H02M5/27
Filed: 1969-12-29
Abstract: 1295298 Converting GENERAL ELECTRIC CO 29 Dec 1969 [3 Jan 1969] 63033/69 Heading H2F  A frequency changer, e.g. for supply of power to an induction heating coil L comprises means 30 for developing a feedback signal representing the actual margin angle of the.main converting elements, the signal being compared at 37 with a reference signal representing the desired margin angle and capacitor switching mechanism 13 responsive to variation of margin angle for changing the capacitance of the output circuit so as to restore the margin angle to within a desired range. As described, the converter 11 comprises a 3-phase bridge (Fig. 2, not shown) of thyristors, ignitrons or thyratrons bridged by an inductor (17), the centre tap of which is connected to point X (Fig. 1) so as to supply a triple-frequency sine wave to the induction heater L. The margin angle detector 30 (of unspecifiedform) provides a pulse during the margin angle of each of the sixmain converting elements. After differentiation at 45 (Fig. 3) the resulting short pulse corresponding to the beginning of the margin period is delayed at 46 andtriggers a monostable circuit 47 which provides a pulse corresponding to the minimum desiredmarginangle. An inhibited AND circuit 37a produces a pulse at 32 only if the actual marginangle is less than the sum of the delay T1 and the period T2. This pulse is fed to a holding circuit 33 which commands a mechanical switching mechanism 13 to increase the value of capacitor C2...C4 connected across the output. A further monostable circuit 49 and a gate 37b provides an output at 42 which reduces the capacitance should the margin angle be excessive. The gate control circuits 27 for the main converting elements may be suppressed at 40 during change of capacitance. A retroactive control loop 50 is included.
Patent GB-1295863-A (GB)
IPC: A24D3/02
Filed: 1969-11-20
Abstract: 1295863 Tobacco-smoke filter manufacture HAUNI-WERK KORBER & CO KG 20 Nov 1969 [22 Jan 1969] 56864/69 Heading A2C [Also in Divisions D1 and G3] Filter plugs 14 are produced by forming a continuous filter rod 12 from a filter tow strip 6 which is stretched and enclosed in a wrapper strip 8, cutting the rod 12 into filter plugs 14, measuring the air resistance of the filter plugs 14 in the axial direction and controlling the stretching of the filter tow strip 6 dependantly on said measurement. The tow strip 6 is opened by air jets 21, 24, passes between two pairs of rollers 27, 28 which constitute a stretching device 26, is sprayed with softener in a wetting device 31, and is then wrapped and the wrapped rod cut to form plus 14. The roll pair 28 is driven at constant speed, but the roll pair 27 obtains its drive via a variable speed drive 38 adjustable by a servo motor 40. After being cut off the filter plugs are fed to a delivery drum 16 which transfers them to a checking drum 41 on which they are connected, preferably several simultaneously, to a responder device 53 whereby changes in suction pressure dependant on the air resistance of the plugs 14, when suction is applied to one end of the plugs 14, are used to vary the capacity of a measurement capacitor 64 that forms part of an oscillator circuit 67. The circuit 67 is connected to a power amplifier 68 which controls the operation of the motor 40 and hence the speed of the roll pair 27 and the tension applied by the stretching device 26.
Patent GB-1295923-A (GB)
IPC: B24C3/26
Filed: 1970-09-11
Abstract: 1295923 Blasting CARBORUNDUM CO 11 Sept 1970 [22 Sept 1969] 43570/70 Heading B3D [Also in Division B8 A conveyer for an abrasive blast cleaning device 10 comprises interconnected slats 28 forming an endless belt 14, each slat 28 extending perpendicular to the direction of conveyor movement and having arcuate-section grooves 34 disposed at an acute angle e.g. of about 55 degrees to this direction. Each slat 28 includes a flange 30 arranged to be driven by sprockets 16-20, and a series of pipe segments of part-circular cross-section may form the grooved slat surface. The conveyor may be located in a housing 12 having a door 12 and an abrasive blast wheel 24 for batch treatment, or may form part of a continuous treatment apparatus (not shown).
Patent GB-1297652-A (GB)
IPC: C07D249/10
Filed: 1969-12-23
Abstract: 1297652 Triazole-selenols ILFORD Ltd 22 Dec 1970 [23 Dec 1969] 62679/69 Heading C2C Novel 1 ,2,4-triazole-3-selenols wherein the 5- carbon atom carries a substituent selected from H, alkyl, aralkyl, aryl and heterocyclic groups, and one of the nitrogen atoms carries a substituent selected from H, alkyl, aryl or aralkyl, are prepared by ring closure of acylated selenosemicarbazides or by reacting a selenosemicarbazide with a carboxylic ester in alcoholic medium in the presence of an alkali metal alkoxide or hydroxide. The products are used as photographic bleach-fix accelerators, stabilizers for silver halide material and anti-bronzing agents.
Patent GB-1301851-A (GB)
IPC: G01M3/32
Filed: 1969-04-03
Abstract: 1301851 Leak testing COSMOPOLITAN ASSURANCE CO Ltd 31 March 1970 [3 April 1969] 17644/69 Heading G1S, G1N In testing a container 29 for leaks, the container and a reservoir 18 are both pressurised from a source 11 with valve 25 open and valve 24 closed, and then valve 25 is closed and valve 24 opened and any fluid-flow between the reservoir and the container as a result of a leak in the latter is detected by the flow detector 23. The reservoir is chosen to have the same capacity and thermal diffusion characteristics as the container, and is preferably a container identical with container 29 but known to have no leaks. Valves 24, 25 may be operated automatically by a pressure differential switch connected to source 11 and port 30, and valve 19 may be controlled automatically so that it is open only when valve 25 is open and valve 27 closed. Exhaust valve 27 may be connected to conduit 15 instead of in the position shown. As shown in Fig. 3, the flow detector comprises a thermistor 53 acting as a heater, and two sensing thermistors 54, 55 which are connected in a bridge measuring circuit Fig.4 (not shown), the output of which is amplified and applied to a meter. In an alternative flow detection arrangement (Fig. 5) a pair of sensing thermistors 70, 71 are located side by side in a flow detection chamber and a potentiometer 77 is adjusted such that the output therefrom is independent of pressure variations in the detection chamber. Fig. 2 shows an arrangement for protecting the flow detector from excessive fluid-flow. Two generators produce a high and low voltage respectively, the former corresponding to the maximum permitted flow through the flow detector. The output from the flow detector is compared with the high and low voltages in comparators 45 and 46 respectively. When the flow detector output voltage exceeds the high voltage, bistable 49 is set by a signal from comparator 45 to the state in which it opens solenoid valve 43. When the flow detector output voltage is below the low voltage, bistable 49 is set by a signal from comparator 46 to the state in which it closes solenoid valve 43.
Patent GB-1319037-A (GB)
Title: Transistors
IPC: H01L27/07
Filed: 1971-03-26
Abstract: 1319037 Semi-conductor devices FERRANTI Ltd 24 March 1972 [26 March 1971] 8719/71 Heading H1K A multi-emitter NPN transistor 10 (Figs. 1, 2) having high inverse current gain value and forming part of an integrated circuit comprises a body with a P-type substrate 12 overlain by a shallow P-type epitaxial layer 13; a N+ layer 14 being buried at the interface and a N+  isolation barrier surrounding the transistor and extending to the buried layer. Two N+ emitters 16, 17 and a further feedback emitter 18 are diffused into the P-type epitaxial base 19 and the surface is covered with a SiO 2  layer (not shown). Contacts 20, 21, 22 are provided to the collector and the emitters 16, 17 with a contact 24 common to base 19 and further emitter 18 spanning the PN junction therebetween. Emitters 16, 17 lie within a first base region 25, and contact 24 and emitter 18 lie within a second region 26 of the base connected to 25 over resistor portion 27 defined between collector region 28 and a tongue 29 of the collector region extending between base regions 25, 26. The part of the collector-base PN junction adjacent emitters 16, 17 is biased off to reduce the number of charge carriers reinjected from the collector into the base region adjacent emitters 16, 17 and to reduce the inverse current leakage when the PN junction is forward biased and one of emitters 16, 17 is at high potential. Also the resistor base portion 27 reduces parasitic transistor leakage between emitters 16, 17, and the feedback emitter 18 reduces stored charge in the saturated condition and shortens the switching time. In a modification (Figs. 4, 5, not shown) the base resistor is interposed between the buried layer and the additional emitter encircling the base contact, which spans the PN junction and contacts the additional emitter.
Patent GB-1327814-A (GB)
Title: Anchorages for track rails
IPC: E01B9/34
Filed: 1970-02-20
Abstract: 1327814 Securing railway rails G MOLYNEUX and G W MOLYNEUX 19 April 1971 [20 Feb 1970] 8276/70 Heading E1G A flanged railway rail 10 is clamped on a metal or other surface 12 by the central portion 35 of a U-shaped clip whose legs 36 are looped back at 37 and have their free ends engaged under and interlocking with convergent or cam-like locating formations at the sides of a body 13 fixed to the surface 12, the camming arrangement resisting the movement of the clip away from the rail. As shown the body 13 is trapezium in plan, its convergent sides providing the camming arrangement and having overhanging shoulders (30), Fig. 2 (not shown) locating the convergent leg ends. Alternatively or additionally the body 13 may have formations engaging notches or turned-up ends, Fig. 5 (not shown) on the legs to provide the camming action. As shown the body 13 abuts the rail flange edge and is laterally adjustable on a fixed stud 21 by rotation of the top flange 18 of an eccentric plug 16 engaging a bore 15 in the body.
Patent GB-1328165-A (GB)
Title: Rotary assembly apparatus for gold-needle-semiconductor diodes  with an automatic insertion of the needle
IPC: H01L21/50
Filed: 1970-12-29
Abstract: 1328165 Semi-conductor devices EGYESULT IZZOLAMPA ES VILLAMOSSAGI RESZVENYTARSASAG 29 Dec 1970 [29 Dec 1969] 61696/70 Heading H1K In a semi-automatic machine with a plurality of assembly heads for fabricating gold-bonded semi-conductor diodes, each assembly head comprises a gripper 10 for gripping a diode casing 9 and a gripper for gripping a first electrode 15 connected to the semi-conductor wafer 8 in the casing, a heating coil 13, a grooved prismatic holder 16 for holding at an angle of between 10-45 degrees to the vertical, a second electrode 6 to which is soldered a gold wire 7, and a magnet 17 for holding the second electrode in the prismatic holder. During fabrication, the diode casing 9 with its wafer 8 and the first electrode 15 are held in the grippers 10 and 11 respectively, and the second electrode 6 is placed in position on holder 16 where it is held under the attraction of a magnet 17. This second electrode has a glass bead 14 bonded to it and a gold wire 7 soldered to it. When the assembly head rotates the holder 16 moves away from the magnet 17 and this second electrode slides out so that the gold wire comes into contact with and bears on the semi-conductor wafer in the casing. The bearing pressure is constant and dependent upon the angle of inclination of the prismatic holder. A signal voltage passes between the wire and the wafer to indicate when contact is made. A voltage is then applied between the electrodes 6 and 15 to form the diode, and the heating coil is activated to bond the glass bead 14 to the casing 9 and solder the diode. After this process the grippers open and the completed diode falls out of the assembly head.
Patent GB-1330198-A (GB)
Title: Speed planting machine
IPC: A01C7/10
Filed: 1971-11-19
Abstract: 1330198 Seed planting machine WISSENSCHAFTLICH - TECHNISCHES ZENTRUM FUR LANDTECHNIK 19 Nov 1971 53939/71 Heading A1D In a seed planting machine the discharge of seed is electronically controlled. A seed from dispensing tube 1 drops between open grabs 2, 3 onto the ground off seed receiving member 8 which is provided with a transmitter that transmits a pulse, whenever a seed falls on member 8, to the electronic control system 13 which causes electro-mechanical actuators 6, 7 to close the grab members 2, 3 after a given time lag chosen to allow the next seed to fall between them, and hold this seed just below tube 1, thereby blocking it. After a delay governed by travelling speed sensor 14 another transmitted impulse to control system 13 causes grab members 2, 3 to be opened and the seed they have been holding is dropped onto member 8 and then falls onto the ground. The process is repeated continuously. Potatoes or other seeds may be planted, the members 2, 3 having an appropriate form.