baber/WOPTO huggingface dataset:
Patent GB-1256663-A (GB)
IPC: G01G11/00
Filed: 1970-03-02
Abstract: 1,256,663. Weighing electrically. COMPAGNIE GENERALE D'AUTOMATISME. March 2, 1970 [Feb.28, 1969], No.9822/70. Heading G1N. A weighing conveyer includes means whereby a signal indicative weight of an unladen conveyer belt is measured over a given time period and the integral of this signal is utilized to compensate for the unladen weight of the belt during weighing operations. As shown in Fig. 1 a conveyer belt 11 passes over sensing rollers which are pivotally mounted at 16 and counterbalanced by a mass 14 whose position is variable on the arm 13. A rod 7 on the arm 13 actuates a strain gauge transducer 10. The strain gauge resistances 17 Fig. 2 are arranged in a bridge circuit 18 whose diagonal points B, C are fed with voltages which are equal and opposite with respect to earth and derived from an arrangement 24. The size of these voltages is dependent on the speed of the belt as determined by a tachometer generator 25. The out-of-balance voltage of the bridge obtained between diagonal points AD amplified at 20 and fed to a differential circuit 26 and thence to a display voltmeter. The second input of the circuit 26 is connected to a switch 33 which in one position is connected to earth so that the output on 27 is indicative of the uncompensated load. In the other position the switch is connected to a circuit 34 whose output gives a measure of the unladen belt load which is to be subtracted from the measured value obtained from amplifier 20. To determine the average unladen belt weight a pre-run is made while the belt is unladen the output from amplifier 20 being fed via switches 30 and 45 to a integrator 28 for a given number of cycles by a counter 31. The integrator output is fed to a centre-zero meter 32 and if the reading lies outside given limits a manual adjustment of the counterweight 14 is made. For smaller readings automatic correction is effected, the  integrator output being fed to a store 29 (which may be combined with the integrator). The output of the store is fed to the amplifier circuit 34 which determines the mean value of the output from amplifier 20 for a unladen belt, the gain G of the circuit being arranged to be G = 1/NT = V/NL where N is number of test cycles, T is the period, V is the velocity of the belt and N its length. The gain is controlled in dependence on V by a signal v derived from the tacho-generator 25. Fig. 3 (not shown) discloses an automatic method for adjusting the counterweight position during the pre-run. The output of the integrator 28 and the output of a potentiometer (which is indicative of the counterweight position) are fed to a differential amplifier 42 whose output is fed to a motor to vary the counter weight position, and consequentially the potentiometer output until a null reading is obtained. The mechanical arrangement is disclosed Fig. 4 (not shown).
Patent GB-1257454-A (GB)
IPC: F21V17/00
Filed: 1970-02-19
Abstract: 1,257,454. Clips. NOVELECTRIC A.G. 19 Feb., 1970 [20 Feb., 1969], No. 8035/70. Heading E2B. A coupling element for releasably coupling two flat superimposed members by engaging and registering slots therein comprises a resilient U-shaped member the legs of which are split and each has a groove 5 and a nose 6 spaced therefrom whereby in use edges of the slot in one member engage in the grooves 5 and the noses 6 abut the other member. The element may be made of plastics material and have projecting teeth 7 for aiding release of the clip from the members.
Patent GB-1259122-A (GB)
IPC: B23Q35/42
Filed: 1968-10-18
Abstract: 1,259,122. Draughting aid. MOLINS MACHINE CO. Ltd. 7 Jan., 1970 [18 Oct., 1968], No. 49576/68. Heading B4X. A draughting aid comprises a transparent template carrying markings defining the parameters of the cutting tool or tools and the associated gripping means (e.g. a chuck) on the spindle of a machine tool so that the non- essential dimensions of a workpiece can be set to ensure that during machining of a workpiece fouling does not occur between the workpiece and a non-cutting part of the machine tool.
Patent GB-1259296-A (GB)
IPC: G05G9/047
Filed: 1968-12-10
Abstract: 1,259,296. Valves. LANCER BOSS Ltd., and G. N. BOWMAN-SHAW. 5 Dec., 1969 [10 Dec., 1968], No. 58709/68. Heading F2V. [Also in Division H1] A control device for load moving apparatus is operated by means of a joystick 20 mounted on a universal ball joint 13 and biased by the spring 17 into its neutral position. Each operating position of the joystick is associated with a respective electrical switch or valve, the joystick being positively guided into each position e.g. by means of slots (11), Fig. 1 (not shown). In Figs. 3 and 4 each of a plurality of parallel bores 31 in a block 30 of insulating material, have a reed switch 33. The joystick 20 has an electromagnetic coil 34, which when energized, via switch 35 in the tiltable knob 36, operates the adjacent reed switch. The coil may be replaced by one or more permanent magnets whilst in Fig. 1 (not shown) the reed switch arrangements are replaced by microswitches or other make/ break electric contacts. A further embodiment replaces the electrical switches with hydraulic valves.
Patent GB-1259559-A (GB)
IPC: E21B15/00
Filed: 1969-06-17
Abstract: 1,259,559. Percussive drill supports. CESKOSLOVENSKY URANOVY PRUMYSL GENERALNI REDITELSTVI. 17 June, 1969 [19 June, 1968], No. 30684/69. Heading B4C. [Also in Division B3]  Means for supporting a mobile reciprocating hammer rock drill 2, comprises a first pattern 3 having the required arrangement of holes 14 to be drilled, a second pattern 4 adjustably supported on a pillar 10, a continuous slot 15, 18 in each pattern, cut-outs 16, 19, in the slots aligned with the holes, and a drill support 1 having members 5, 6 for engagement in the cut-outs. Each of the holes 14 has a sleeve 24 fixed therein, and the drill steel 21 is guided in the sleeves by a bushing 23. In operation, two holes are first drilled into the rock face, pattern 3 is fixed thereto by bolts 8, and is prevented from turning by stops 9. Member 5 of support 1 is inserted into a hole 17 and moved along slot 15 up to the first cut-out 16. Member 6 is similarly inserted in slot 18 of template 4, and the latter is positioned on pillar 10 by a bolt. 12 which is located in one of the openings 11. The first hole is drilled, whereafter the. support is moved to the next cut-out and the next hole is drilled.
Patent GB-1264142-A (GB)
IPC: H03J1/02
Filed: 1969-02-05
Abstract: 1,264,142. Indicative apparatus. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. Feb.5, 1969 [March 18, 1968; April 15, 1968(2)], No.6294/69. Heading G1J. [Also in Divisions G2 and G5] An arrangement for illuminating a dial plate 12 comprises alight guide 13, and a light source 14, the guide having a rear inclined side face 22 which diffusely reflects light from the source to illuminate the dial plate. Coloured filters mounted in a frame 15 may be arranged between the light source and the guide and the relative positions of the source and frame may be varied to change the colour of the light illuminating the dial. The frame 15 may be mounted on a shaft 16 pivotally mounted at 17 and which carries a pin 21 fitted into a cam slot in a disc 18 mounted on a shaft 19. On rotating the shaft 19, which for example may be the wavelength control shaft of a radio, the cam slot and pin coact to move shaft 16 and change the colour of the illuminating light. In another embodiment Fig.4 (not shown) the light guide is formed as a re-entrant prism having a first side face parallel to the dial plate, two end-faces each adjacent a light source, and two inclined diffusely reflective surfaces which reflect light from the sources through the first side face on to the dial plate.
Patent GB-1264937-A (GB)
IPC: C07D233/92
Filed: 1970-07-02
Abstract: 1,264,937. Imidazole derivatives. KRKA TOVARNA ZDRAVIL. 2 July, 1970 [3 July, 1969], No. 32202/70. Heading C2C. 1 - Carbmethoxyalkyl - 2 - methyl - 4 - nitroimidazoles of the general formula in which n is an integer from 1 to 3 are prepared by reacting an imidazole of formula with methanol at reflux temperature and drying the crude oily product under nitrogen at 80‹ C. and under 0À3 mm. Hg. The product may be recrystallized from ethyl acetate.
Patent GB-1265419-A (GB)
IPC: C07C51/50
Filed: 1969-08-22
Abstract: 1,265,419. Acrylic acid. BP CHEMICALS Ltd. 13 July, 1970 [22 Aug., 1969], No. 41998/69. Heading C2C. The polymerization of acrylic acid during distillation is minimized by distilling the acrylic acid in the presence of nitrous acid in the gas phase and phenothiazine in the liquid phase.
Patent GB-1266697-A (GB)
IPC: E04F11/18
Filed: 1969-06-05
Abstract: 1,266,697. Making railings; riveting. LIPS N.V. 5 June, 1969 [5 June, 1968], No. 28451/69. Headings B3A, B3J and B3U. A hollow member 1 for attachment to a second member 2 comprises grooves 4, 5 of triangular section leaving a thin wall 6 which breaks as the member 1 is pressed against member 2. Thus separated, the end of member 1 acts as a setting pin over which the new end of the member is expanded, Fig. 3 (not shown), and secured in the second member. A balcony &c. railing may be made by securing a number of anodized members 1 between upper and lower rails 2.
Patent GB-1266737-A (GB)
IPC: F16K17/10
Filed: 1969-12-17
Abstract: 1,266,737. Fluid-pressure servomotor systems. CROSBY VALVE & ENG CO. Ltd. Dec. 17, 1969 [Dec.26, 1968], No. 61578/69. Heading G3P. A fluid relief valve has a seat 20 connecting an inlet 22 and an outlet 24 and a sleeve 26 aligned with the seat, the sleeve being of greater inner diameter than the seat, a valve member 34 slidable in the sleeve and forming a control chamber 44, the valve member having a passage 42 connecting the inlet and the control chamber, and a fluid-pressure actuated pilot valve so having a connection 52, 58 with the passage. When the pilot valve is lifted by a rise in pressure at the inlet, fluid escapes through an outlet 56 at a rate sufficiently restricted to raise the pressure in a passage 90 communicating with a spring-loaded bellows 74 which opens a valve 76 and connects the control chamber 44 with a vent 86. An annular clearance 64 allows liquid to drain from chamber 44. The closure face 38 of the valve is pivotally mounted for self-alignment with the seat.
Patent GB-1267092-A (GB)
IPC: G03G5/00
Filed: 1969-05-19
Abstract: 1,267,092. Photochromic materials and uses thereof. CORNING GLASS WORKS. 19 May, 1969 [27 May, 1968], No. 25310/69. Heading C4S. [Also in Division C1] A photochromic glass article contains silver halide crystals dispersed in a glass matrix in an amount of at least 0.005% by volume and has an interior tensile stress zone and a surface compressive layer of depth at least 5 Á such that at least the surface layer contains 0À3-1À5% by weight Ag, the glass containing Li and/or Na ions which in the surface layer have been at least partially replaced by larger Na, K and/or Ag ions, the interior portion of the article comprising, by weight, 55-65% SiO 2 ; 15-25% Al 2 O 3 ; 3-15% R 2 O, where R 2 O consists of 0-5% Li 2 O and/or 0-10% Na 2 O; and 0À3- 5% C1 and/or 0-1% Br. The silver halide crystals may be dispersed only in the surface layer. Such an article may be prepared by ionexchange reacting the base glass with molten Ag or Ag-salt at from 100‹ C. below the strain point to 100‹C. above the softening point, for, e.g. 10 minutes to 6 hours to introduce Ag into the glass and to cause the Ag to form halide crystals. Alternatively, when the halide crystals are dispersed throughout the glass, a glass may be prepared from an Ag-containing batch, and an article shaped therefrom is heated in an inert atmosphere between the strain and softening points for, e.g. ¢-12 hours to cause halide crystal formation, before carrying out ion-exchange with Na, K or Ag at, e.g. 50-150‹ C. for 1-8 hours. Up to 3% F may be included and less than 0À1% by wt. of CuO while Mg, CaO, SrO, BaO, ZnO; ZrO 2 , B 2 O 3 , and PbO improves the photochromic behaviour and other physical properties, e.g. BaO and/or PbO adjust the refractive index although, additions should not individually exceed 5% by wt. and, in sum, 10% except for B 2 O 3 . Many examples are disclosed, some with Sb 2 O 3  additions. Silver chloride and/ or bromide crystals smaller than 0À1 and 0.01   micron diameter may comprise at least 0.005% by vol. of the article. Applications are to windows, automobile windscreens and opthalmic lenses.
Patent GB-1289021-A (GB)
IPC: C22C19/00
Filed: 1970-08-03
Abstract: 1289021 Alloys TOYOTA CHUO KENKYUSHO K K 3 Aug 1970 [2 Aug 1969 8 May 1970] 37434/70 Heading C7A An Ni-Al-Be alloy has a composition within the polygonal area BCIJK shown on the Figure, in which the proportions are expressed as atom per cent and B represents Ni 87, Al 11, Be 2 C represents Ni 48, Al 50, Ba 2 I represents Ni 48, Al 0À1, Be 51À9 J represents Ni 50À1, Al 0À1, Be 49À8 K represents Ni 61, Al 11, Be 28 Not more than 50 atom per cent of the Ni may be replaced by Fe and or Co. Impurities such as Si, Cu may be present in amounts such as 0À2-0À4 weight per cent. In order to minimize oxidation of Be the alloys may be melted in a vessel using electromagnetic levitation. Among the uses referred to are atomic heat engine parts, parts of jet propulsion motors, gas turbine blades, high temperature valves.
Patent GB-1290636-A (GB)
IPC: B60P3/03
Filed: 1971-05-28
Abstract: 1290636 Security vehicles FORD MOTOR CO Ltd 28 May 1971 [28 Aug 1970] 17753/71 Heading B7B A security vehicle is made by conversion of a delivery van or lorry by fitting premanufactured detachable armour plates. The drivers cab 1 and a second cab 2 are separated by a wall 5 and an armoured glass frame 6 which can pivot downwardly to provide access between the cabs. A bullet proof partition 7 separates cab 2 from a load carrying space 3. A sliding door 10 provides access to the cap 2, while a rear door 11 provides access to the space 3. A console 12 is fitted beside drivers seat 14 controls electromagnetic locks and other electrical equipment used in the conversion.
Patent GB-1296522-A (GB)
IPC: H03M5/00
Filed: 1968-08-21
Abstract: 1296522 Digital transmission; coding L C JESTY 20 Nov 1969 [21 Aug 1968] 24073/68 Heading H4P \ The Specification relates to a method of coding to increase the information content or the rate of which information can be transmitted through a channel. It is also stated that system can increase the storage capacity of memory systems using magnetic tape or photofilm, or be used for simultaneous transmission of sound and vision signals, RYB signals for colour television or dual signals for stereophonic sound. Considering known binary N = 4 bit code system having bits xxxx where x=0 or 1, 16 combinations are possible, e.g. 0000 to 1111 which may be considered as the corners as a four dimensional hypercube and each corner may be considered as being the centre of a hypersphere of radius ¢ which will touch tangentially other spheres at the mid-point of each side and have middle space along each. diagonal of length 1 in which a further sphere may be fitted which will touch all the corner spheres. From this it is deduced that one additional message of 4 bits of amplitude ¢ having as it centre co-ordinates ¢, ¢, ¢, ¢, may be transmitted without increasing band width. Pairing pulses of amplitude 1¢ to each of ¢ allows a further 16 combinations to be added to the original, which gives a message content equivalent to a 5 bit combination. Values of other than ¢ may be selected and the middle space will be increased for values N greater than 4. For example it is stated that for groups of 8 binary pulses giving 2<SP>8</SP> messages, 225 additional messages may be sent. Although the simplest method of decoding a received signal is to store a complete series of messages and compare each unit with everyone of the possible states this is tedious and time consuming even with a computer hence a more sophisticated method is suggested in which the hyperspace is systematically and progressively searched away from the region in which the received message point lies thus eliminating the necessity for comparing received message points with those which are obviously remote from it. In another method the received message is divided into pulse sequences according to the pulse amplitudes. Pulse amplitudes need not be in the ratios 1, 2, 4, 8 but may have other ratios, e.g. 3, 9, 27 or 5, 25, 125 &c. Instead of additional messages, an error correcting code may be incorporated.
Patent GB-1296913-A (GB)
IPC: B29D30/00
Filed: 1970-02-19
Abstract: 1296913 Cutting tyres W E JENSEN 19 Feb 1970 [13 March 1969] 8122/70 Heading B4B A replaceable blade 28 for a rotatable tyre peeler used in preparing worn tyres prior to retreading comprises a body portion 52 having an array of cutting teeth 48 each tooth having side cutting edges 66, 68. The blades are formed from sheet metal and provided with an inclined surface 54, Fig. 4, from which the teeth 48 extend. The teeth may be separated by partcircular cutouts 65 thereby causing the cutting edges 66, 68 to diverge outwardly to form sharp prongs 72, 76; the circular cutouts may be replaced by ones of substantially dove-tail shape, Figs. 14 and 15 (not shown). The teeth may have one or both of their side cutting edges set outwardly as shown in Fig. 5 and such edges, together with their top edges 70, may be sharpened, Figs. 6, 7, 13 and 16 (not shown); alternatively only every other tooth may be set, Fig. 11 (not shown). The blades are mounted on a plate 22, Fig. 1, and are located thereon by pins 36 engaging holes 32, 34, Fig. 3, provided in the blades, the blades being clamped between plates 24 and 26 by means of a nut N screwed on to a shaft M. As shown in Fig. 1, a number of rasping blades 30 are also clamped between the plates 22 and 26. In a modification, the rasping blades may be dispensed with.
Patent GB-1302180-A (GB)
IPC: F01D17/14
Filed: 1969-03-31
Abstract: 1302180 Turbines ROTAX Ltd 18 March 1970 [31 March 1969] 16672/69 Heading FIT The effective flow area of the nozzle blades 10 of a turbine can be varied by radially movable shutter plates 13, 14 disposed upstream thereof. The plates 13, 14 include leg portions 15 mounted at 16 upon spaced pivots carried on a fixed member 17, the latter also pivotally supporting at 19 a cross link 18 having slotted ends 20 within which engage pins 21 mounted on the legs 15. An actuating member 22 engages via a curved link 23 with the pin 21 associated with plate 13 so that movement of member 22 causes angular movement of link 18 and thus radially inward or outward movement of plates 13, 14 to vary the flow area. (For Figures see next page)
Patent GB-1315482-A (GB)
Title: Method of moulding articles having patterned or textured surfaces
IPC: B29C33/38
Filed: 1969-07-15
Abstract: 1315482 Moulding configured articles BRITISH INDUSTRIAL PLASTICS Ltd 2 July 1970 [15 July 1969] 35605/69 Heading B5A [Also in Division C7] A configured resin moulding auxiliary is made by locating a mass 3 of thermosetting resin, preferably a reinforced polyester, a parting sheet 2, and a sheet having the desired surface configuration, between a pair of dies, closing the dies to compress the resin, heating the resin to cure it and finally removing the auxiliary thus formed from the mould and stripping therefrom sheets 1 and 2. In use, articles are moulded against the auxiliary which is covered with a separating film of plastics or metal to facilitate easy release. In one example, thermosetting moulding material is compression moulded between dies carrying negative and positive auxiliaries made by the above process. A release sheet is interposed between the moulding material and one auxiliary, the other auxiliary being covered with a decorative paper for incorporation into the finished article. The configured sheet may be linen or the like and the parting sheet and separating film may be aluminium foil, " Cellophane " (Registered Trade Mark) or cellulose acetate.
Patent GB-1316139-A (GB)
Title: Animal feeder
IPC: A01K5/02
Filed: 1970-06-29
Abstract: 1316139 Animal feeder E PARSONS & SONS Ltd 21 June 1971 [29 June 1970] 31432/70 Heading AIM [Also in Division G3] An animal feeder comprises a poweroperated feed distributor controlled by a timing mechanism. The feed distributor may have a variable outlet. As shown in Fig. 1, the distributor comprises a plate 20, having radial vanes 22 and an off-centre agitator 26, which is rotated by a motor 24 controlled by a timing mechanism 30. Grain from a hopper 10 is thereby flung over a wide area. A bell 34 is also activated by the timer mechanism 30 during, or just before, feed distribution. Timer mechanism A pin on a clockwork timer closes a microswitch activating the motor 24 for a time determined by an adjustable resistance-capacitance circuit. This circuit supplies, after a predetermined delay, a triggering voltage to a thyristor thereby opening relay contacts causing the current to the motor to be cut off.
Patent GB-1319241-A (GB)
Title: Shoe manufacture
IPC: A43D87/00
Filed: 1969-10-10
Abstract: 1319241 Boots &c SHOE & ALLIED TRADES RESEARCH ASSOCIATION 8 Jan 1971 [10 Oct 1969] 49966/69 Heading A3B [Also in Division B5] An apparatus for transferring a pre-cut blank for a shoe upper to the peripheral clamp of a pre-forming machine, comprises a platform 1 with raised side walls 2 to support the blank in a definite curved form, and a shaped support plate 4 which, with a gripper 6, can be reciprocated to engage the blank andtransfer it to the preforming machine. The platform can be lowered out of the path of the members 4 and 6 before they move. The plate 4 has a roughened surface 5.
Patent GB-1320322-A (GB)
Title: Support jacks
IPC: E21D15/20
Filed: 1969-08-19
Abstract: 1320322 Telescopic support jacks BIRMINGHAM ALUMINIUM CASTING (1903) CO Ltd 12 Aug 1970 [19 Aug 1969] 41360/69 Heading EIE A support jack comprises a body 11 with a series of longitudinally offset formations such as recesses defining shoulders 19 which are selectively engageable with a relatively displaceable plunger 12 having equi-angularly displaced projections 21 provided with flanges 23 to straddle the shoulder 19 and prevent inadvertent disengagement therefrom.
Patent GB-1330831-A (GB)
Title: Pressdown taps or valves
IPC: F16K31/60
Filed: 1969-09-26
Abstract: 1330831 Valves U B ROYLANCE [trading as SHEARDOWN ART VALVES] 23 Sept 1970 [26 Sept 1969] 47523/69 Heading F2V A press-down tap has an operating knob 5 rotatably secured to a spindle 4 by a set screw 9 and washer 10 and formed in two parts, the lower of which has a skirt 6 and a boss 7 to which the upper part 13 is screw threaded. The skirt has a longitudinal groove 14 extending along the internal periphery from the bottom edge which groove can be aligned with a complementary one 15 on the body so that a key 17 may be inserted into the aperture so formed to lock the lower knob portion against rotation while the upper portion is unscrewed. The complementary groove may be formed in the gland nut or a washer trapped between the nut and the body. The grooves may be part circular, triangular, or rectangular in cross-section. The upper knob portion may be formed of plastics and have a skirt completely covering the lower portion.