baber/WOPTO huggingface dataset:
Patent GB-1485393-A (GB)
Title: Scratch strain cassette recorder
IPC: G01B5/30
Filed: 1974-11-11
Abstract: 1485393 Scratch strain gauge and recorder; recording apparatus LEIGH INSTRUMENTS Ltd 11 Nov 1974 [19 Nov 1973] 48681/74 Headings G1J and G1M A workpiece 36, Fig. 1, in which strain is to be measured, has blocks 12 and 34 fixed to it which support separate plates 10, 30 which are relatively movable in a longitudinal direction. The plate 10 mounts a double linkwork bifurcated beam 22 having extension 24, 26 each adapted to engage with an out-turned end of a two coil spring arrangement wound around a grooved disk on the end of a shaft 40 rotatably mounted in a housing 28 screwed down on to the plate 30. As the plate 10 in strain operation slides relatively to the plate 30 the end 16 mounting the beam 22 is caused to lift or fall slightly so that the ends 24, 26 of the beam in Fig. 2 lift or lower the ends 94, 96 of two single coil springs wrapped around and seated in grooves 100, 102 in a disk 98 fixed to the shaft 40. The springs are arranged to tighten and loosen respectively on the disk so that up or down motion of the ends 24, 26 produce rotation of the shaft 40 in one direction only. As the shaft rotates, a tape in an assembly 50 locked to an end-plate 52 of the housing 28 is rotated and unwound by a capstan roller 64, Fig. 3, fixed to the end of the drive-shaft 40. A stylus 20 fixed to the strain recording plate 16 may make a zig-zag trace D such as that shown in Fig. 4, the transverse distance between any two points being proportional to the change in strain, whilst a further stylus 48 on the housing 28 produces a datum line E to indicate what unwanted transverse movement of the tape has taken place. Fig. 5 (not shown), illustrates a slightly modified form of bifurcated beam.
Patent GB-1245483-A (GB)
Title: Condensed soluble hydrogensilsesquioxane resin
IPC: C08G77/12
Filed: 1969-10-06
Abstract: 1,245,483. Hydrogen silsesquioxane. DOW CORNING CORP. 6 Oct., 1969 [4 Nov., 1968], No. 48903/69. Heading C1A. [Also in Division B2] A fully condensed hydrogen silsesquioxane is prepared by adding a solution of trichlorosilane, trimethoxysilane or triacetoxysilane in a hydrocarbon or halohydrocarbon solvent to a two-phase system comprising concentrated sulphuric acid and an aromatic hydrocarbon, while mixing the medium, at a rate slow enough to avoid gelation, then separating and washing the hydrocarbon phase of the mixture until it is neutral and recovering the silsesquioxane. Yields are improved by addition of fuming sulphuric acid or an arylsulphonic acid to the sulphuric acid, and the proportion of lower oligomers by the addition of glacial acetic acid. In Examples, trichlorosilane in benzene is slowly added to a stirred mixture of concentrated H 2 SO 4  and fuming H 2 SO 4  and benzene. This procedure is varied by using: in Example 3, acid from a previous preparation; in Example 5, trimethoxysilane; in Example 6, H 2 SO 4  and benzene-sulphonic acid; in Example 7, H 2 SO 4  only; and in Example 8, by adding glacial acetic acid to the acid mixture. The products contain volatile oligomers (Si 8-16) and non- volatile resins. They may be used in textile treating, coating and anti-corrosive compositions and as cross-linking agents for silicone elastomers.
Patent GB-1447527-A (GB)
Title: Apparatus for regulating the voltage of an electric source
Inventor: RYM CHRISTIAN
IPC: G05F1/62
Filed: 1973-10-19
Abstract: 1447527 Automatic voltage regulation ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI 19 Oct 1973 [20 Oct 1972 19 March 1973(2)] 48935/73 Heading G3R A power source comprises a number of cells producing current from incident radiation and grouped into modules which are connected in parallel to a common distribution conductor. The conductor voltage is regulated by comparison with a reference to form an error signal which can effect coarse regulation by connecting or disconnecting one of the modules, or fine regulation by actuating a circuit connected to the conductor. As shown in Fig. 1, solar cells are grouped in modules M1-8 supplying a satellite power conductor B through diodes D1-8. The conductors voltage is compared with a Zener diode reference in a differential amplifier AD which supplies an input signal to a conventional A-D converter C. Binary outputs C2-8 control transistors T2-8 which, when turned on, short-circuit respective power modules to provide coarse regulation, and further binary outputs b1-5 control transistors t1-5 which can connect shunt resistors W1-5 to the conductor B to provide fine regulation. In another embodiment, Fig. 5 (not shown), that part of the error signal corresponding to fine regulation is used in analogue form to control the conduction of a transistor connected in series with a single shunt resistor. A similar arrangement, Fig. 7 (not shown), may be used to control a buck-boost circuit connected to the conductor B and supplies by additional solar cell modules and by an auxiliary battery.
Patent GB-1000886-A (GB)
Title: Splicing apparatus
Inventor: HERZIG LEONARD ADAIR
IPC: G03D15/04
Filed: 1963-12-13
Abstract: 1,000,886. Slicing record tapes. PRESTOSEAL MANUFACTURING CORPORATION. Dec. 13, 1963, No. 49296/63. Heading G5R. [Also in Divisions A4, B5 and G2] Magnetic tapes, cinematograph films and like elongate records are spliced by welding a thermoplastic bonding tape to both sides of the join. Record strips A and B are held during trimming and splicing in clamps 9, 10 and 7, 8, respectively. The clamps are pivotally mounted for 180 degrees movement about shaft 3. In the forward horizontal position (Fig. 6), the clamps locate the ends of the strips A and B on a stationary blade 2 so that they can be trimmed by a pivoted blade 6. Bonding tape dispenser.-Reels of tape, one of which is in a dispensing position, are mounted in a casing 63. Initially, the leading end of the tape is brought over guide groove 93 and placed between the leaf-spring arms of gripper 95 (Figs. 2 and 6). A similar gripper 97 is carried on a slider having an actuating knob 85, riding in a guide slot 78, and a spring return means. The slider is returned by the spring so that gripper 97 strikes gripper 95 which passes between its arms. The arms of gripper 97 come together again on the tape S behind gripper 95. On moving knob 85 forwardly, gripper 97, towing the tape S, is moved successively between the arms of grippers 95, 138, 139 and 140. As the slider reaches the end of its stroke, an abutment separates the arms of gripper 97 to release the tape S, blade 102 severs the tape immediately in front of gripper 95 and latch 127 is operated to release a tape carrying member 123, 133 (Figs. 6 and 12) on which grippers 138- 140 are mounted. Member 123, 133 is rotated by spring 125 about pivot 124 and is thereby folded about pivot 135 to the inclined position shown in Fig. 12. Tape S is thereby positioned directly over mica hot-plate 20 and, on release of knob 85, the slider is returned by its spring into the initial position. Record-splicing arrangements.-Clamps 7, 8 and 9, 10 are turned back separately to bring the record strip into the splicing position. The downward movement of clamp 9, 10 completes the folding action of arm 133 by engagement with projection 134, so that the trimmed abutted ends of the strip lie in the fold of the tape S. Lever 22 (Fig. 1) is brought down and latched by engagement of member 25 with bar 24 and a safety switch in the heater circuit is simultaneously closed. On rotation of lever 30 about pivot 32, shoe 27 is forced into engagement with the sandwiched strip and tape by cam action. The heater circuit is completed on pressing button 45 and the heating period is controlled by adjustable timer 41. An ammeter 43 and rheostat are used to control the heater current. On completion of the welding process and on pivoting lever 30 back, lever 22 is released by pulling knob 52 and springs back to release the tape S from grippers 139. The splice may be inspected over illuminated window 37 and the excess tape trimmed off by knife 56. An illuminated transparent window is also provided at 39.
Patent GB-1451344-A (GB)
Title: Imaging system for an imaging device
IPC: H01L27/148
Filed: 1973-10-24
Abstract: 1451344 Semi-conductor devices GENERAL ELECTRIC CO 24 Oct 1973 [30 Oct 1972] 49551/73 Heading H1K [Also in Division H4] An imaging device having a solid-state target comprises means for storing the sum of the image and background charges and means for separating the image charge from the background charge before the signal charge is detected. The target consists of a plurality of cells, each having a MOS structure with two plates 91, 92 over an oxide layer covering an N- doped silicon substrate. The charges are stored in depletion regions under the plates 91, 92 and are separated as follows. With the plates 91, 92 at - 20 V. and -10 V. respectively the total charge is stored under plate 91, Fig. 4B, which is then raised to 0 V. whereupon the stored charge is transferred under the plate 92, Fig. 4D. The plate 92 is then raised to the voltage corresponding to the background charge, e.g. - 6 V., Fig. 4E, and this causes the signal charge to be injected into the substrate. The plate 92 is returned to - 10 V., Fig. 4F, and then raised to 0 V. to inject the background charge into the substrate, Fig. 4G. A circuit for sequentially addressing the cells in an array is described. In an alternative embodiment a cell having four storage plates (150, 152, 154, 156), Fig. 6 (not shown) and an isolation plate (150a) is used to separate the image and background charges.
Patent GB-1093567-A (GB)
Title: Protection of silicon surfaces from silicon carbide deposition
IPC: H01L21/00
Filed: 1965-11-23
Abstract: 1,093,567. Semi-conductor devices. DOW CORNING CORPORATION. Nov. 23, 1965 [April 9, 1965], No. 49703/65. Heading H1K. In order to protect portions of a silicon surface against silicon carbide deposition they are provided with a layer of silicon oxide which is removed by etching after the deposition process has been completed so that any silicon carbide deposited thereon is also removed. In a preferred embodiment a silicon body is treated in an oxidizing atmosphere and the oxide layer so formed is removed from those portions of the surface on which silicon carbide is to be deposited. After the deposition the remaining protective oxide layer is removed with hydrofluoric acid. If the oxide is entirely covered, a hole must first be made through the overlying silicon carbide, e.g. by using a chlorine-oxygen etch, to allow the hydrofluoric acid to reach the oxide layer.
Patent GB-1487766-A (GB)
Title: Aromatic diisocyanates and polymers thereof
IPC: C08F20/36
Filed: 1974-11-20
Abstract: 1487766 Polymers containing blocked isocyanate groups B F GOODRICH CO 20 Nov 1974 50255/74 Heading C3P [Also in Division C2] A polymer comprises from about 0À1 to 100% by weight of polymerized units of an ethylenically unsaturated blocked aromatic diisocyanate of the formula wherein R is hydrogen or a methyl or ethyl radical; A is a carbonyloxyalkylene radical containing 2 to 8 carbon atoms or an aralkylene radical; B is a bivalent aromatic radical selected from arylene, naphthalene, and the structure where R is defined as above; Y is O, S, or -(-CH 2 -)- n ; n=0 to 3; X is the radical fragment remaining after a hydrogen atom is removed from the nitrogen atom of an oxime, benzimidazole, pyrazole, benzotriazole, caprolactam, thiocaprolactam, or p-nitroaniline, and up to 99À9% by weight of polymerized units of a copolymerizable vinylidene monomer.
Patent GB-1260147-A (GB)
Title: Guillotine cutting machine
Inventor: CHAPMAN CHARLES WALTER
IPC: B26D1/04
Filed: 1968-10-23
Abstract: 1,260,147. Cutting apparatus. HALLITE HOLDINGS Ltd. 15 Sept., 1969 [23 Oct., 1968], No. 50402/68. Heading B4B. A guillotine machine for cutting sheets from a web of tacky or like material provided with a backing strip comprises a pair of rollers 7, 8 for stripping the backing strip from the web as it is fed through the machine, and means 11, 12 and 27, 28 adapted to operate in synchronism in order to hold and feed the web through the guillotine, when open, to a predetermined point in the path of travel of the web. The stripping rollers 7, 8 are rotatably mounted on an arm 9 so that the roller 7 contacts the periphery of a roll 1 of material, thereby driving both rollers. The web-feeding means comprises a pair of rollers 11, 12 drivingly coupled by gears 13, 14, the roller 11 being driven by means of a rack 16 via a gear 15 and a one-way clutch connected therewith. The rack is connected to a block 31 which is fastened to a sleeve 33 slidable on a stationary shaft 34, the sleeve being driven by means of a pneumatic or hydraulic piston. The shaft is supported in block (36, Fig. 1) which is adjustable along the bed of the machine. The block 31 also supports one end of a bar 29 which is connected at its other end to a slidable rod 30, the bar carrying a pair of gripper jaws 27, 28. The guillotine includes a pair of blades 20, 21, the blade 21 being mounted on a bar which is movable vertically on bars 23, 24; the cutting edges of the blades are urged together by springs (21<SP>1</SP>, 2111, Fig. 3). In operation, the jaws are actuated pneumatically to grip the end of the web and the sleeve 33 then moved by its actuating piston so that gripper pulls the web and the rollers 11, 12, driven by the rack, tend to push the web. At the end of a stroke determined by the setting of the shaft 34, the blades are pneumatically actuated to cut the web and a switch 39, 41 actuated to cause the rack to be returned.
Patent GB-1352672-A (GB)
Title: Process and apparatus for dewatering suspensions
IPC: D21F9/02
Filed: 1972-11-02
Abstract: 1352672 Paper-making apparatus O BRAUNS 2 Nov 1972 [3 Nov 1971] 50636/72 Heading D2A During the formation of a web on a wire 6 from a suspension fed to the wire at 4 white water drained from the web is used to dilute the suspension entering at 1 and is also discharged at 20 onto the web, whereby fine material in the white water is returned to and retained by the web. The wire is supported on members 7, 9 which may be rollers, suction boxes or foils. The water discharged at 20 may be an inclined jet having substantially the speed of the wire or it may create turbulence in the web, and the water may be drained from and dischargedto the web at -any position along the wire including before or after the water line. The discharge means 20 may be movable along the wire, and white water collecting troughs may be insertable at different locations along the wire. White water fractions withdrawn from different parts of the system may be returned to different locations along the web, and two fractions may be returned to the same location. White water fractions may be deposited on the wire side of the web while the web is on a press felt subject to suction drainage. Substances for varying the chemical or structural properties of the web may be added to the white water discharged onto the web.
Patent GB-1087085-A (GB)
Title: Slide-changing mechanism
Inventor: BOSLEY DENIS VERNON
IPC: G03B23/04
Filed: 1964-12-14
Abstract: 1,087,085. Slide projector. ALDIS BROS. Ltd. Dec.10, 1965 [Dec.14, 1964], No. 50728/64. Heading G2J. The slide changing mechanism for a projector described in Specification 1, 087, 084 is fitted with means for returning slides to the input guide 12, if the carrier bar 14 is not fully inserted into the projector. This is effected by providing an abutment 20 on the bar 14 which returns a slide which has not been fully inserted, i.e. which is not prevented from returning by a detent 19a. In order to ensure that the slide is not prevented from returning due to obstruction by the leading slide in the input guide, two arms 21 of a spring 22 are provided which engage cam surfaces 23, 24 on the carrier bar (Fig. 3) and which thus prevent the leading slide from contacting the bar 14 until the latter has been returned to its extreme outward position.
Patent GB-1419662-A (GB)
Title: Catalytic oxidation of ammonium sulphite and bisulphite
IPC: C02F1/72
Filed: 1973-11-05
Abstract: 1419662 Catalytic oxidation of ammonium sulphite and bisulphite PRODUITS CHIMIQUES UGINE KUHLMANN 5 Nov 1973 [13 Nov 1972] 51232/73 Heading C1A Aqueous solutions of ammonium sulphite and/or bisulphite are oxidized to provide ammonium sulphate by contact with air containing N 2 O 4  at 0‹ to 50‹ C. and 1 to 5 atmospheres pressure, the N 2 O 4  concentration being 700 to 4000 p.p.m. by volume.
Patent GB-1314352-A (GB)
Title: Bituminous products containing polyurethanes
IPC: C08L95/00
Filed: 1970-10-28
Abstract: 1314352 Bituminous composition NAPHTACHIMIE 28 Oct 1970 [29 Oct 1969] 51251/70 Heading C3N. A thermoplastic bituminous product comprises a petroleum bitumen and a quantity of polyurethane not exceeding 5% by weight, preferably 0À5-4% by weight, the polyurethane being made from a polyhydroxy compound containing more than four hydroxy groups in the molecule or two or more polyhydroxy compounds of which at least one contains more than four hydroxy groups in the molecule and an organic polyisocyanate. The polyurethane components are incorporated into a previously fluidized petroleum bitumen. The polyhydroxy compound preferably contains 5-8 hydroxyl groups per molecule, e.g. polyether polyols prepared by condensing sorbitol or sucrose with an alkylene oxide. The organic polyisocyanate is preferably an aromatic polyisocyanate, e.g. toluene diisocyanate, diphenylmethane diisocyanate or polymethylene polyphenylisocyanate. The number of isocyanate groups present in the organic isocyanate to the total number of hydroxy groups present in the polyhydroxy compound may be 1 : 1 to 2 : 1, e.g. 1À1 : 1. The polyhydroxy compound and polyisocyanate may be introduced into the bitumen simultaneously or alternatively they may be introduced separately, e.g. the polyhydroxy compound added first and then subsequently the polyisocyanate to the intermediate product. Alternatively before the polyhydroxy compound and the organic polyisocyanate are incorporated into the bitumen, all of the polyisocyanate is reacted with a portion of the polyhydroxy compound to produce a pre-polymer, the pre-polymer being incorporated into the bitumen before the remainder of the polyhydroxy compound. Suitable bitumens employed are direct distillation bitumens and oxidized bitumens. Fillers such as chalk, silica, dolomite, talc and kaolin, and polyurethane cross-linking catalysts such as dibutyl tin laurate may also be incorporated. The product of the invention finds particular application in road surfacing.
Patent GB-1356693-A (GB)
Title: Torque limiting device
IPC: H02K5/24
Filed: 1971-11-05
Abstract: 1356693 Torque limiting device R POSTHUMUS 3 Nov 1972 [5 Nov 1971] 51483/71 Heading G1W A device for limiting the torque of a motor comprises a base-plate 12, a frame 16 pivoted at 14 to the base-plate, the frame consisting of side members 18 and a cross-member 20 and having motor mounting studs 28, a pair of bolts 34 each passing through a hole in cross-member 24 and each having a fixed nut 36 at its lower end in abutment with the base-plate 12, a pair of precompressed springs 40, and a member 44 threadably engaged by bath bolts 34, the arrangement being such that when the motor torque exceeds the value required to overcome the precompression of springs 40, the frame pivots relative to the base-plate and operates a switch 46 Fig. 1, (not shown) to shut off the motor. The precompression of springs 42 may be varied by rotating the bolts 34, and washers 54 may rotate with the bolts and carry scales. The pivoting of the frame is limited by nuts 52 on a stud 50. A further spring arrangement may be provided above cross-member 24 to limit the torque in the other direction.
Patent GB-1253316-A (GB)
Title: Hopper craft
IPC: E02F7/04
Filed: 1969-10-23
Abstract: 1,253,316. Hopper craft. INDUSTRIEELE HANDELSCOMBINATIE HOLLAND N.V. 23 Oct., 1969 [1 Nov., 1968], No. 51943/69. Heading B7A.  In a hopper craft having a central hopper 4 with air chambers 5, 6 on each side, branch pipes 9 load dredged material into the air chambers and pipes 18 discharge the material from them. In the embodiment of Fig. 3 overflow 11 of the central hopper and overflow 13 of air chamber 5 lead into pipe 14 which passes through the air chamber to the side of the craft.
Patent GB-1533847-A (GB)
Title: Dyeing methods
IPC: D06P1/60
Filed: 1974-12-02
Abstract: 1533847 Dyeing natural polyamides L B HOLLIDAY & CO Ltd 2 Dec 1975 [2 Dec 1974] 52094/74 Heading D1B Natural and mixed natural and synthetic polyamide fibre yarns and fabrics are dyed by (i) pretreating with an amphoteric auxiliary as defined, in a bath brought to the dyeing temperature within a period of 10 to 30 mins., and maintained at that temperature for a further 10 to 30 mins, (ii) adding at least one reactive dye to the dyebath, (iii) completion of the dyeing. The pretreatment may be at pH 4 to 7 with weakly anionic amphoteric auxiliary, the dyeing being at 70 to 100C using azo or anthraquinone reactive dyes. Preferably the substrate is a machine washable wool which has been chlorinated and resin-treated.
Patent GB-1116148-A (GB)
Title: Manual override clutch
IPC: F16B1/04
Filed: 1965-12-08
Abstract: 1,116,148. Clutches. FORMSPRAG CO. 8 Dec., 1965 [10 Feb., 1965], No. 52147/65. Heading F2C. A clutch arrangement for controlling an aircraft engine throttle by the conventional servo mechanism of an automatic pilot system and providing over-riding manual control, the automatic servo mechanism resuming control on cessation of the manual adjustment, comprises an output pulley 16 fast with a member 49 having pairs of oppositely oriented sprags 18, 19 urged by a garter spring 64 into engagement with a race surface 23 of an automatic servo input drive disc 12. A manually operated pulley 14 has fingers 84, 85 disposed on either side of each pair of sprags 18, 19 and on operating the pulley 14 the fingers 84 or 85 first engage the sprags 18 or 19 and tilt them out of engagement with the race 23, continued movement of the fingers causing them to engage the sprags 18 or 19 at their base portions 60 which are mounted in sockets 58 in the member 49 which is thus driven. The fingers 84, 85 are maintained out of contact with the sprags when pulley 14 is not operated by means of a spring 82 between the pulley 14 and the member 49. The driving disc 12 is connected to the servo input by means of a slip clutch comprising axially slidable driving flanges 30 urged apart by a Belleville spring 40 into engagement with friction rings 31, 36 fast with the disc 12.
Patent GB-1214090-A (GB)
Title: A sluice valve
Inventor: ISHIGURO KAZUO
IPC: F16K3/18
Filed: 1968-11-05
Abstract: 1,214,090. Valves. K. ISHIGURO. 5 Nov., 1968 [10 Nov., 1967], No. 52309/68. Heading F2V. A sluice valve has the bottom of a valve seat 26a positioned higher than the bottom plane 24a of the inlet 24 and has the bottom plane 21a of the valve chamber below the closure member 23 forming the same plane as the bottom plane 25a of the outlet 25 to prevent the collection of solids below the closure member. The inner surface of the seat is parallel to the inner surface of a guide plate 27 and holds the closure member against the seat during its vertical movement by a rotary screwed shaft 30a and a nut portion 23d. Inclined surfaces on projections 23e and 31 provided on the closure member and casing respectively force the closure member against the seat on valve closure.