baber/WOPTO huggingface dataset:
Patent GB-1442697-A (GB)
Title: Shutter mechanism for a camera
IPC: G03B9/36
Filed: 1974-05-02
Abstract: 1442697 Camera shutters SEIKO KOKI KK 2 May 1974 [2 May 1973] 19325/74 Heading G2A Camera shutter has a pawl 9 for operating a U-shaped spring 15 so that firstly the spring 15 urges a control member 14 towards an electromagnet 16, so that when the electromagnet is energized it holds member 14, and secondly the spring 15 urges the member 14 away from the electromagnet so that when the electromagnet is de-engergized the spring 15 moves the member 14 to close the shutter. A single spring thereby performs operations previously requiring two springs. As shown, initially a flange 9f of pawl 9 engages an arm 15a of spring 15 to urge it and thus member 14 clockwise towards electrogmagnet 16. When a shutter release 13 is manually rotated anticlockwise, it releases a member 12 which rotates clockwise and operates a switch S for energizing the electromagnet, closes flash-synch contacts (not shown), and turns a pawl 11 anti-clockwise to release a cam 10. Cam 10 rotates anti-clockwise and (1) moves pawl 9 clockwise (a) to engage flange 9f with spring arm 15b for urging member 14 away from electromagnet 16, (b) to release a shutter closing actuator 6 which rotates clockwise until arrested by member 12 and (2) moves a retainer 8 clockwise (a) to release an actuator 5 which rotates clockwise to move opening blades 3a-e and initiate exposure (b) to turn a pawl 17 anti-clockwise to release member 14 so that, when electromagnet 16 is de-energized by a photoelectric timing circuit (not shown), spring 15 rotates member 14 anti-clockwise, member 14 rotates member 12 anti-clockwise to release actuator 6, and actuator 6 rotates clockwise to operate closing blades (not shown) to terminate exposure. The shutter may alternatively have a single opening blade and a single closing blade.
Patent GB-187677-A (GB)
Title: Improvements in and relating to chills
IPC: B22C9/10
Filed: 1921-07-18
Abstract: 187,677. Appleyard, K. C., Manners, W. E., Bewicke, P. W., Laycock, Sir J. F., and Portal, M. R. July 18, 1921. Cores; core - bars.- A chill core for casting turbine gear wheels is arranged so that it can be heated internally before casting and cooled and allowed to collapse after. The core comprises a number of hollow members a, two of which are more tapered than the other two, held by rings d, e on a hollow spindle f with conical bearing sleeves g, g<1> and a box j, the whole being secured by nuts i, p. Before casting the core is heated by burning air and gas admitted at the inlet h or k, the latter communicating with the box j which has inspection openings m and a cover n. After casting the gas is cut off and air or water may be circulated through the chills. The inlet-pipe h is then detached and the spindle extracted to allow the members a to contract by reason of slip joints q, Fig. 7, or intervening packing of sand and linseed or core oiJ, or straw rope covered with loam which is destroyed by the heat.
Patent GB-1236599-A (GB)
Title: A device for pulling a slab from a mould of a vertical-type machine for continuous casting of metal
Inventor: NISKOVSKIKH VITALY MAXIMOVICH
IPC: B22D11/128
Filed: 1968-04-24
Abstract: 1,236,599. Continuous casting. URALSKY ZAVOD TYAZHELOGO MASHINOSTROENIA IMENI S. ORDZHONIKIDZE. 24 April, 1968, No. 19347/68. Heading B3F. A continuous slab 1 is drawn from a vertical mould 2 by bars in two groups, which alternately grip the slab to lower it and release it to return upwards, one group lowering while the other rises; the bars each comprising an upper portion 3 or 3<SP>1</SP> connected by a hinge joint 5 or 6 to a lower portion 4 or 4<SP>1</SP> loaded by springs 19 for slab-gripping and being raised and lowered by cam drives 23 and moved to and from the slab 1, for grip and release, by driven crankshafts 7 supported at their ends by rolls 10 urged by springs 22 to bear on vertical guides 11. The bars 3, 4 of one group are interdigitated, Fig. 2, with the bars 3<SP>1</SP>, 4<SP>1</SP> of the other group. The springs 22 also urge end extensions 14 of the bars 3, 4 and 3<SP>1</SP>, 4<SP>1</SP> against rolls 12, 16. The bottom rolls 16 (at least one to each bar) are mounted on two shafts 17 each supported by an adjustable and spring-loaded slide 18 which may also be moved by hydraulic pistons 20 for allowing the springs 22 to draw the lower bar portions 4, 4<SP>1</SP> apart. The hinge joints each include a cylindrical projection on one bar portion and a complementary cavity in the other, Fig. 4 (not shown).
Patent GB-1506629-A (GB)
Title: Tubular electric heating elements
IPC: H05B3/00
Filed: 1975-05-08
Abstract: 1506629 Corrosion protection of a heating element ELPAG AG CHUR 8 May 1975 [9 May 1974] 19503/75 Heading C7E [Also in Division H5] A metal sheathed heating element has the metal sheath 1 protected against stress crack corrosion and pitting by a sacrificial wire anode 2 pressed against the outside of the sheath and including a plurality of parallel lengths of wire. Preferably the sacrificial anode 2 is pressed by means of a die into contact or into the surface itself of the sheath 1. Loops 3 of the sacrificial anode may extend out from the sheath or may inter-connect adjacent limbs of a hairpin shaped element 6. Examples of alloys suitable to be used together for the sheath and sacrificial anode are given. The wire also acts to conduct heat from the sheath.
Patent GB-969325-A (GB)
Title: Information storage equipment
IPC: G06F3/08
Filed: 1960-07-20
Abstract: 969,325. Statistical apparatus; selective signalling. J.HANDLEY. Sept. 23,1960 [July 20, 1960], No.19561/64. Divided out of 969,323. Headings G4H and G4M. In an electro-mechanical data storage equipment flat record members are arranged side by side and each carries a number of parallel tracks of information and means are provided to move a reading head carriage into position to select the desired record, the moving means being adapted to produce a pattern of signals which is compared with the input control pattern to provide an automatic check on its proper operation. The reading head carriage is moved by a series of pistons having strokes in proportion to 1, 2, 4, 8 &c. Each piston is adapted to operate contacts at the opposite ends of its travel. The control signals are applied to relays, one set of contacts being connected to control valves to allow pressure to pass to selected ones of the pistons. At the end of the movement a comparison is made between the positions of the pistons and the positions of the relays. For this purpose the contacts of the pis-  tons and the relays are interconnected and identity provides a path to allow a sequence of operations, to take place. A gripper on the read head descends grips the selected record and lifts it into co-operation with the sensing means and returns it to the initial position. Signals are generated at each operation to control the initiation of the following operation.
Patent GB-1183755-A (GB)
Title: Improvements in or relating to Gaseous Optical Masers.
IPC: H01S3/038
Filed: 1967-04-28
Abstract: 1,183,755. Lasers. SIEMENS A.G. 28 April, 1967 [29 April, 1966], No. 19591/67. Heading H1C. In a gas laser of the kind in which molecules or atoms of the active medium are pumped by collisions of the second kind with electrons having a substantially uniform velocity, a source of free electrons is provided together with means for generating mutually perpendicular electric and magnetic fields. The active medium, e.g. neon is contained in tube 1 containing electrodes 11, 12 for setting up an electric field, and a cathode heater 14 to produce emission of electrons from glow-cathode 12. Magnetic field 13 is generated by means not shown, the tube being flattened in the direction of the magnetic field and having a narrow rectangular or oval crosssection. The electrons proceed along cycloidal paths between the electrodes, the majority having an instantaneous velocity which is approximately double the drift velocity between the electrodes. The latter velocity, is determined by the ratio of the electric and magnetic fields for a given gas pressure and can be varied by adjusting the ratio. The gas pressure is preferably such that an electron has a mean free path length one or two orders of magnitude greater than the distance around a loop of the cycloid. The voltage applied between electrodes 11, 12 should be several (e.g. fifteen) times the voltage necessary to energize an electron sufficiently to raise an atom or molecule of gas to the required excited state.
Patent GB-1437867-A (GB)
IPC: F02B19/12
Filed: 1974-05-06
Abstract: 1437867 IC engines NISSAN MOTOR CO Ltd 6 May 1974 [4 May 1973] 19771/74 Heading F1B The invention relates to an I.C. engine of the spark ignition type in which a combustion chamber 18 is provided in which a turbulent flow of air/fuel mixture is produced. A vent valve 21 is provided, opening from the combustion chamber 18, the valve being opened at the last portion of the compression stroke but closed before ignition whereby a fraction of the air/fuel mixture is discharged from the combustion chamber in order to weaken the turbulent flow. The engine shown in Figs. 3 and 4 comprises an inlet passage 14 controlled by an inlet valve 15, and a combustion chamber 18. The vent outlet 20 from the combustion chamber 18 opens into the inlet passage 14 and is controlled by a vent valve 21. A spark-plug 19 is located in the combustion chamber 18. In a second embodiment the outlet 20 from the combustion chamber 18 opens into the exhaust duct 16, the unburned air/fuel mixture discharged through the outlet burning in the exhaust passage causing any hydrocarbons or CO in the exhaust gas to be oxidized. In Fig.9 a single valve 15A functions as both inlet valve and as vent valve, the valve being opened for inlet of air/fuel mixture from passage 14 as usual and then being opened again for a brief period at the end of the compression stroke for release of a portion of the turbulent air/fuel mixture.
Patent GB-525542-A (GB)
Title: Improvements in the polymerisation of isobutylene
IPC: C08F210/12
Filed: 1938-07-04
Abstract: 525,542. Hydrocarbon polymerization products. JOHNSON, G. W. (I.G. Farbenindustrie Akt.-Ges.). July 4, 1938, Nos. 19775 and 20666. [Class 2 (iii)] Polymerization products are prepared by treating isobutylene, or mixtures of the same with a minor proportion of diolefines, with boron trifluoride as catalyst, at temperatures below - 10‹ C. in the presence of a diluent and of .001 to 1 per cent. (calculated on the weight of the isobutylene) of one of the following accelerators, viz.: sulphuric, nitric, caproic or trichloracetic acid ; formaldehyde, phenol, cresol or a monohydric aliphatic, cycloaliphatic or aromatic alcohol, e.g. methanol, ethyl, isobutyl, octyl or benzyl alcohol, or cyclohexanol, the accelerator being added to the isobutylene or mixture thereof before the addition of the catalyst. Specified diolefines are butadiene,. isoprene and dimethylbutadiene. In examples (1) to (7) liquid isobutylene mixed with liquid ethylene is treated at -103‹ C. with boron fluoride in the presence of one of the accelerators specified above, and in examples (8) to (10) liquid isobutylene containing a small proportion of isobutyl alcohol or cyclohexanol is mixed with butadiene, cooled by the addition of liquid ethylene and/or methane, treated with boron fluoride, dissolved in liquid ethylene or methane. The interpolymers of isobutylene and butadiene may be vulcanized by heating with gas black, zine oxide, sulphur, stearic acid, mercaptobenzothiazole and tetramethylthiuramdisulphide. Specifications 401,297, 432,310, 479,478 and 491,739 are referred to.
Patent GB-1424050-A (GB)
Title: Electromagnetic flow transducers
IPC: G01P5/08
Filed: 1973-04-26
Abstract: 1424050 Electromagnetic flowmeters SYBRON CORP 26 April 1973 [12 June 1972] 19963/73 Heading G1N An electromagnetic flow transducer includes lamina electrodes 12 which are each sealed over a hole 17 in the fluid conduit 1 by a sealant 18 lead wires 13 passing through the holes being also sealed in the holes by the sealant 9. The sealants may both be of glass frit which is applied in an unfused state prior to fusing the platinum foil electrode 12 and lead wire 13 to the conduit section 1 which may be of stainless steel, ceramic, plastics material or fibre glass. Instead of the sealant being in the form of a lamina the electrode may be fused on to a glass frit sealing the hole 12. The lamina 18 may be of a plastics material. Alternatively the lead wire 13 may be sealed in place in the hole 17 and then the lamina electrode 12 printed thereon in the form of a conductive paste. The paste is then fixed to the sealant and lead wire end. The lead wire 13 may be in the form of a twisted, as shown, or straight Figs. 3, 4 (not shown) hairgrip with the ends 14 bent over.
Patent GB-1051502-A (GB)
IPC: H03K17/84
Filed: 1965-05-12
Abstract: 1,051,502. Magnetic storage devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. May 12, 1965 [May 26, 1964], No. 19981/65. Heading H3B. In a magnetic storage matrix 10, Fig. 1, in which information is stored in discrete elemental areas of a continuous thin magnetic film 6, an apertured and non-magnetic conductive sheet 8 is positioned between the magnetic film and the co-ordinate driving conductors 12, 16, the conductor intersections being in register with respective apertures 9. It is stated that the arrangement prevents magnetic interaction and consequential noise between the elemental areas and so permits a higher storage density. The apertures may be round, elliptical or square. The thin magnetic film which may be permalloy is insulated from a conductive substrate 2 of copper, aluminium or silver by a layer 4 of silicon monoxide, the substrate providing a return current path for all the conductor driving currents. The apertures sheet 8 may be formed by an etching process from a copper-clad film 11 of polyethylene terephthalate. A modified construction using several chromium layers to improve adhesion between the various parts is described, Fig. 2 (not shown). A storage matrix is shown in Fig. 4 in which the conductive and non-magnetic sheet 72 has square apertures 75a-75i in register with co-ordinate word lines W5-W7 and grouped bit lines B5a, B5d, B6a-B6d, B7a-B7d. Each group of bit lines provides parallel paths from a bit driver, a sense line 55a-57a being centrally located in each group. To enable noise and intelligence signals to be clearly distinguished, further bit lines and further signal lines B5e, B5f, B6e, B6f, B7e, B7f, S5b, S6b, S7b are located midway between the rows of apertures, the sense lines being associated in pairs with differential amplifiers 80a- 80c. A simpler form of store is also described using single bit and sense lines in each row. Fig. 3 (not shown).
Patent GB-723271-A (GB)
Title: Production of 7-keto steroid esters
IPC: C07J9/00
Filed: 1952-08-08
Abstract: D 5 : 6-7-keto steroid esters of the general formula <FORM:0723271/IV (b)/1> wherein R1 is an alkyl, aryl, aralkyl or heterocyclic group, and X is a substituted trimethyllene chain fused to the 13- and 14-carbon atoms to provide a cyclopentanopolyhydrophenanthrene ring, are prepared by heating the corresponding D 5 : 6-3-ester with an alkyl benzene (particularly toluene, xylene, ethylbenzene, cumene and cymene) in the presence of an oxygen-containing gas and preferably including an alkyl benzene hydroperoxide.  Specified esters are acetic, benzoic, phenylacetic and nicotinic, and specified D 5 : 6 steroids which may be used are sterols, e.g. cholesterol, sitosterol, stigmasterol, campesterol, fucosterol, and sapogenins, particularly diosgenin.  In an example oxygen is bubbled through a heated mixture of cholesteryl acetate, cumene, sodium bicarbonate and cumene hydroperoxide, the product filtered and 7-cholestenone acetate isolated by partial evaporation and treatment with methanol. Diosgenin acetate similarly yields 7-keto-diosgenin acetate.
Patent GB-905748-A (GB)
Title: Improvements in or relating to cable installations for portable electric welding equipment
Inventor: TRIBE THOMAS FRANCIS
IPC: H01R11/12
Filed: 1960-06-08
Abstract: 905,748. Cables; cable terminals. BRITISH FEDERAL WELDER & MACHINE CO. Ltd. June 8, 1960, No. 20192/60. Classes 36 and 38 (1). A cable installation for portable electric welding equipment comprises a kickless cable 14 having two groups of conductors 2 within a protective sheath 21, a pair of mutually insulated complementary elements 23 secured together to form a Y-junction, the stem portion 25 of each of these elements being connected to one of the conductor groups and the cable sheath being secured (e.g. by clip 27) to the stem, and a branch cable 30 connected to each limb 26 of the fork of the Y-junction by means of a coupling 32 telescoped within the limb 26 (or within which the limb is telescoped). The branch cables are intended to be connected to the welding gun to avoid possibility of mechanical damage of the main cable and they each comprise a group of conductors 31 and a protective sheath 30, the latter being connected to the coupling 32 by, e.g., a clip 34. The conductors 20 may contain a flexible cooling fluid pipe 29, the Y-junction and coupling then being tubular with the telescopic connection sealed by an 0-ring. The terminals of the branch cables may be flat connectors 35 with an outlet for coolant fluid 36, or the coupling members 32 may be utilized, these being then fitted into tapered or otherwise shaped adaptors (Fig. 5, not shown).
Patent GB-449119-A (GB)
Title: Improvements in taps, especially for washing-basin, bath and like fittings
IPC: F16K31/60
Filed: 1935-07-15
Abstract: 449,119. Taps. TRITON-BELCO AKT.- GES., 13, Alter Teichweg, Hamburg, Germany. July 15, 1935, No. 20220. Convention date, Aug. 3, 1934. [Class 135] In a tap of the kind having a rotary non- reciprocating spindle d, the lower end of which is screw threaded to actuate the valve member, and a stuffing box around the top of the spindle, the handle c is freely coupled axially, by means of a key f and slot e, to the spindle, and secured to the stuffing box nut b in a freely rotatable manner so that axial movement is prevented. This connection is effected, Fig. 1, by means of a spring ring h engaging in corresponding grooves in a projecting boss of the handle and a central bore of the nut b. In a modified construction, Fig. 2, the stuffing-box nut is split into two halves, b<1> and b<2> and provided with an internally projecting flange m engaging with a groove in a cylindrical bush or boss o of the handle. In a further modification, a bush secured to the handle is formed in two halves with an inwardly projecting flange which engages a groove in the outer surface of the stuffing-box nut.
Patent GB-1458278-A (GB)
Title: Method for forming a silicon electrode
IPC: H01L21/00
Filed: 1974-05-08
Abstract: 1458278 Semi-conductor devices INTERNATIONAL BUSINESS MACHINES CORP 8 May 1974 [28 June 1973] 20265/74 Heading H1K A boron-doped Si electrode 16<SP>11</SP>, e.g. the gate of an IGFET, is provided with gradually sloping edges in order to reduce the risk of open circuits in higher metallization levels 20<SP>11</SP> where they cross the electrode 16<SP>11</SP>. This is achieved by varying the concentration of boron doping through the thickness of the electrode 16<SP>11</SP> from a maximum at its lower surface to a minimum at its upper surface so that when the electrode is etched to shape the dependence of etching rate upon dopant concentration produces the desired sloping edges. In the manufacture of the Si IGFET shown the gate 16<SP>11</SP> is deposited from a gaseous mixture of SiH 4  and B 2 H 6  in H 2 -N 2 , the flow rate of B 2 H 6  decreasing continuously from a maximum at the start of deposition to a minimum at the finish. An HF/ HNO 3 /acetic acid etchant removes the lightly doped Si at the surface more quickly than the deeper more heavily doped material, resulting in the desired sloping edges. At lower B 2 H 6  flow rates, resulting in a less desirable higher resistivity electrode 16<SP>11</SP>, the direction of variation of concentration-dependent etching rate with dopant flow rate is reversed, so it is necessary to increase the flow rate continuously during deposition. Even at relatively high dopant flow rates the electrode resistivity tends to be higher than in prior art devices due firstly merely to the presence of less Si in the electrode and secondly to an aromalous increase of resistivity with increasing dopant flow rate above a certain level. This problem is overcome by appropriate adjustment of dimensions or by additional B-doping of the electrode 16<SP>11</SP> after etching, e.g. during diffusion of source and drains regions 2, 3. The electrode may be evaporated rather than deposited by chemical vapour deposition.
Patent GB-650908-A (GB)
Title: Improvements relating to alternating electric current generators
Inventor: WHITEHOUSE HAROLD ERNEST
IPC: H02J7/14
Filed: 1948-07-30
Abstract: 650,908. Machines with permanent magnets self-contained supply systems. LUCAS, Ltd., J. July 30, 1948, No. 20330. [Classes 35 and 38 (iv)] The output of a small A.C. generator having two generating windings a, b to supply D.C. through a rectifier is controlled by switching arrangement adapted to control the connection between said windings. As shown, the winding a has its mid point permanently connected to the negative of a battery c, while the ends of this winding are connected to the positive of the battery through a rectifier d. The winding b can be arranged as follows : (1) connected in parallel to the winding a ; or (2) open-circuited or (3) short-circuited through a connection h. The machine can be excited either by D.C. or a permanent magnet.
Patent GB-1105550-A (GB)
Title: An acceleration and deceleration control system for a dc motor
IPC: H02P23/00
Filed: 1965-05-13
Abstract: 1,105,550. Control of D.C. motors. FUJITSU Ltd. 13 May, 1965 [13 May, 1964], No. 20353/65. Heading H2J. The armature M of a D.C. motor which drives a magnetic tape is-supplied at voltages V1, V3, and V2 in succession so that the motor is accelerated, operated at rated speed, and decelerated to standstill. To start the motor in a forward direction, transistors T2, T5, are made conductive, and the acceleration current is integrated by network R2, C1 The integrated armature current is clamped to a predetermined magnitude by network D2, R3, and is then differentiated by network C1, R4 to provide a signal at terminal OUT. At the instant where the integrated current reaches the predetermined constant magnitude a control unit connected to the terminal OUT switches transistor T5 to its non-conductive state and renders transistor T7 conductive. This indicates the end of the acceleration period and the beginning of the period of operation at the rated speed. To stop the motor, transistors T7, T2, are made non- conductive and transistors T3, T4, are switchedon so that the armature current is reversed. When the integrated deceleration current reaches the clamped value, the transistors, T3, T4, are rendered non-conductive and the motor comes to rest. In a similar manner, the motor is started in reverse by switching-on the transistors T3, T4. At the end of the acceleration priod, the transistor T4 is rendered non-conductive and the transistor T6 is made conductive for operation at rated speed. To bring the motor to rest, transistors T3, T6, are switched-off and transistors T5, T2, are rendered conductive, the motor being stopped when the transistors T5, T2, are finally switchedoff. In a modification, the motor is accelerated in two stages, and is decelerated in a similar manner.
Patent GB-1268541-A (GB)
Title: Sun visors and methods of manufacturing sun visors
Inventor: LANE ALBERT REGINALD
IPC: B60J3/02
Filed: 1969-10-22
Abstract: 1,268,541. Sun visors. AUTO ASSEMBLIES (BIRMINGHAM) Ltd. 20 July, 1970 [22 April, 1969], No. 20362/69. Heading B7J. A method of manufacturing a sun visor comprises joining together two foamed plastics sheet blanks 17, 18 by means of staples 22, 23, inserting a metal frame 11, 12 between the blanks, and finally covering the blanks and frame with a plastics sheet material such as P.V.C.