baber/WOPTO huggingface dataset:
Patent GB-1116557-A (GB)
Title: Improvements in or relating to electric switching assemblies
Inventor: WARD PETER WILLIAM
IPC: H02B1/056
Filed: 1965-08-12
Abstract: 1,116,557. Electromagnetic relays. GENERAL ELECTRIC CO. Ltd. 5 Aug., 1966 [12 Aug., 1965], No. 34584/65. Headings H1L and H1N. A plurality of centre-stable relays similar to those described in Specification 1,083,596 have two groups of contacts, one of which is operated in each of the extreme positions of its armature to connect the circuits of one path of a matrix to the circuits of another path. The rows and columns of paths are formed of printed circuit connectors on opposite sides of a board on which the relays are detachably mounted by resilient lugs or a spring strip engaging the ends of a mounting bracket extending through the board. The optionally energizable coils of the relays are in series with rectifiers or the contacts of further relays to prevent simultaneous energization. The construction of the relays is as described in Specification 1,116,556.
Patent GB-1478670-A (GB)
Title: Sweep generators
IPC: H03K4/72
Filed: 1974-08-06
Abstract: 1478670 Sweep generator AMERICAN OPTICAL CORP 6 Aug 1974 [6 Aug 1973] 34644/74 Heading H3T A sweep generator has an integrator to derive a voltage which changes smoothly and continuously from a first to a second level as a function of a source of current, a driver to generate a sweep current as a function of the voltage, sensing means to develop a voltage proportional to the sweep current and means responsive to this voltage to control the source of current such that the current is constant when the absolute magnitude of the sweep current is less than a predetermined value and such that the current changes in a manner which causes the voltage from the integrator to be exponential in form when the absolute magnitude of the sweep current exceeds the predetermined value. The source of current I 1  to charge C 1  and hence derive the voltage ramp is constant current so long as the voltage appearing across R5, D3 and R6 is constant. This occurs for the parts of the ramp near zero volts. The integrator is self resetting via amplifier 14 which acts as a switch with two trigger levels set by R2 and R1 and transistor Q1. The voltage ramp at the output of 10 is turned, by a known circuit, into a current ramp applied to the yoke 34. The ramp is linearized by sampling the yoke current in RY. With zero volts at the non-inverting input of 30, zero current flows in yoke 34, Q2 and Q3 both conduct, their current set by the constant current flowing in Rb. For small voltages either Q2 or Q3 is partially turned off and the diverted current flows in the yoke. The voltage appearing between the collectors of Q2 and Q3 remains constant. For larger signals either Q2 or Q3 is turned off and so the voltage between the collectors is no longer constant, falling as the voltage applied to the non-inverting input of amplifier 30 rises further. This change in voltage acts on Q4 which ceases to act as a constant current source and gives a smaller current, and a less rapidly rising ramp. Thus S correction is obtained. An approximate relation between yoke current Iy and source current I 1  is given in Fig. 7. (not shown). Another embodiment Fig. 10 (not shown) has extra components to stabilize the operation to prevent RF oscillation. The change from a linear to curved current ramp can be set also by a Zener diode in series with R5 (Fig. 10) or by using separate resistor 39 and coupling diode D4 (Fig. 9) instead of the direct connection between R5 and R3 (Fig. 6). More complicated diode networks (not shown) can be used to give several points of control in the current ramp.
Patent GB-828753-A (GB)
Title: A process for the production of alpha, alpha-spiro-heptamethylene-succinic acid imides
IPC: C07D209/54
Filed: 1957-11-07
Abstract: The invention comprises compounds of the general formula <FORM:0828753/IV (b)/1> (wherein R is hydrogen, or an aliphatic (including alkenyl and alkynyl), cycloaliphatic, aryl, or heterocyclic radical which may be substituted by a halogen atom or a nitro, alkoxy or hydroxy group), and their preparation by reacting an alkali metal cyanide with a cyclo-octylidenecyanoacetic ester (e.g. ethyl ester), saponifying and decarboxylating the resulting ae,ae-heptamethylenesuccinodinitrile - b  - carboxylic acid ester by heating with a strong acid, and converting the ae,ae-heptamethylene-succinic acid so formed into its imide, preferably via the anhydride, by reaction with ammonia, urea, or a primary amine.  In examples, cyclo-octylidene-cyanoacetic acid ethyl and methyl esters, respectively, are treated with potassium p cyanide in aqueous ethanol, acidified, and the resulting ae,ae - heptamethylenesuccinodinitrile - b  - carboxylic acid ethyl and methyl esters are heated with 62% sulphuric acid and worked up in the usual way to give ae,ae-heptamethylenesuccinic acid.  This, heated with acetyl chloride yields the corresponding anhydride, which gives, with urea, ae,ae-spiro-heptamethylenesuccinimide. (The latter is also obtained by reacting the anhydride in ether with ammonia and heating the resulting ae,ae-heptamethylenesuccinic acid half-amide with acetyl chloride).  With methylamine, n-butyl-amine, allylamine, m-chloroaniline, p-ethoxyaniline, ethanolamine and 2-aminopyridine, the anhydride yields the corresponding half-amides which are converted, either by heating alone or with acetyl chloride, into the N-substituted imides.  Propyl and butyl esters may also be used in the first step of the synthetis, and the hydrochloride of ae,ae-spiro-heptamethylene-succinic acid N-(2-pyridyl)imide is described.  The products possess antiepiletic and antispasmodic properties, their efficacy in relieving cramp being compared with with that of analogous compounds, unsubstituted at the nitrogen atom, containing cyclopentane, cyclohexane and cycloheptane rings. Specification 756,471 is referred to.
Patent GB-512212-A (GB)
Title: Improvements in or relating to the manufacture of socketed steel pipes
IPC: B21C37/29
Filed: 1938-11-29
Abstract: 512,212. Making socketed pipes. DEUTSCHE EISENWERKE AKT.-GES. Nov. 29, 1938, No. 34725. Convention date, Dec. 13, 1937. [Classes 83(i) and 83(ii)]. Casting.-Socketed steel pipes are made by centrifugally casting pipes having the diameter of the required finished pipes and the socketed end portions are subsequently formed mechanically, for example by expanding, forging or compressing. The casting is carried out in a mould lined with loose granular material.
Patent GB-369648-A (GB)
Title: An improved pressure tester for pneumatic tyres
IPC: B60C23/00
Filed: 1930-11-19
Abstract: 369,648. Pneumatic tyre pressure gauges. KELLENDORFER, R., 4, Erzgiessereistrasse, Munich, and MECANO GES. SPECIALARTIKEL FœR KRAFTFAHRZEUGE, 48, Bockenheimer-Anlage, Frankfort-on-Main, both in Germany. Nov. 19, 1930, No. 34812. Convention date, Nov. 19, 1929. [Class 106 (ii).] Comprises a tubular part k which is screwed to the tyre nipple and over which the cap part a enclosing the gauge parts can slide. The cap a has a window b through which a mark n on a tube c can be observed through a transparent tube d fitted between the parts a, b A tyre-valve depressor h<1> on a perforated disc h is surmounted by a diaphragm g and spring- pressed thimble e provided with a mark o. A spring q normally holds the parts in the position shown and when the cap a is depressed the tyrevalve is opened and the diaphragm is moved up, the correct pressure being indicated by the mark o aligning with the mark n. A nipple l normally closed by a cap m serves for charging.
Patent GB-1385409-A (GB)
Title: Process for the resolution of d,l -phenylpropanolamine
IPC: C07C/
Filed: 1972-07-26
Abstract: 1385409 Resolution process DEUTSCHE GOLD-UND SILBER SCHEIDEANSTALT 26 July 1972 [30 July 1971] 34874/72 Heading C2C Phenylpropanolamine is resolved using an optically active acid of the formula (R<SP>1,2</SP>=H, C 1-8  alkyl, cycloalkyl, aryl; Ac= acyl).
Patent GB-1444955-A (GB)
Title: Device for positioning a mobile object along a given path
IPC: G05B19/12
Filed: 1973-07-23
Abstract: 1444955 Position encoding G SELAM 23 July 1973 [31 July 1972 7 Dec 1972] 34976/73 Heading H3H [Also in Division G3] A device for determining the position of a mobile object movable along at least one path comprises a position encoder attached to the object and a position information support extending along the path so that it can be read by the encoder. The information support may be a girder 34 with position codes on 3 faces. The reading heads may sense the information optically, magnetically, capacitatively, piezoelectrically or by direct electrical contact. As shown, the reading heads 39, 40, 41 are mounted in a case 32 which nearly surrounds girder 34 and is spaced therefrom by spring mounted wheels 44. The position along the girder is encoded in 12 track binary with 4 tracks on each face 34a, 34b, 34c of the girder and each reading head has four heads, e.g. 39a-39d. The encoder may be used for driving the movable object to the desired position by setting the desired position on three comparators (4 lines each) feeding the signals from heads 39, 40, 41 to the respective comparators and using the comparator outputs to control speed, direction and braking.
Patent GB-507604-A (GB)
Title: Improvements in or relating to electric condensers
IPC: H01G4/35
Filed: 1937-12-17
Abstract: 507,604. Condensers; wireless receiving-apparatus. STANDARD TELEPHONES & CABLES, Ltd., LENO, J. A., and EDWARDS J. C. Dec. 17, 1937, No. 35043. [Class 37] [Also in Group XL] A condenser casing 1 is cylindrical with sides cut away from the top to form two shelves as at 3 by means of which it can be secured either to screws 5 to a base as shown or direct to a panel &c. Leads from the condenser may pass downwards and out through the sides of the base as at 22, 23, 24, or laterally from the flattened sides of the casing 1. The under side of the casing 1 may be constituted by a plate which can carry fuses in clips, connection to terminal posts mounted in the base being effected by spring clips. The cylindrical form enables it to be combined with a coil-for example to form an interference suppressor-by mounting within the coil former.
Patent GB-1194923-A (GB)
Title: Spray Cleaning Device for Containers, Tanks, Barrels, Pots and like Vessels
Inventor: HAMMELMANN PAUL
IPC: B05B3/04
Filed: 1967-08-01
Abstract: 1,194,923. Spray-producers. P. HAMMELMANN. 1 Aug., 1967 [2 Aug., 1967], No. 35176/67. Heading B2F. A spray cleaning device for containers and like vessels comprises a stationary support 1 on which a rotatable housing 3 is mounted, an inlet opening 16 in the stationary support 1, an inlet pipe 18 rotatalbly mounted on the stationary support 1 in communication with the inlet opening 16, a piston assembly 24, 25 mounted for rotation about an axis 81 and axial motion in a cylinder chamber 65 defined by the stationary support 1, coupling means comprising lugs 28 engaging helical grooves 27 for transforming reciprocating motion of the piston assembly 24, 25 into rotary motion of the inlet pipe 18, a nozzle head including a shaft 39 connected for rotation with the housing 3 and piston assembly 24, 25 about the axis 81, and a one-directional clutch 17 connecting the inlet pipe 18 with the stationary support 1 so that on a first stroke of the piston assembly 24, 25, the inlet pipe 18 is permitted to rotate freely, whereas on a return stroke of the piston assembly 24, 25, the inlet pipe 18 is held against rotation relative to the stationary support 1, and the piston assembly 24, 25 and rotatable housing 3 are rotated. The nozzle head is therefore rotated stepwise about the axis 81. Reciprocation of the piston assembly also acts to rotate the nozzle shaft 39 about its axis perpendicular to the axis 81, by means of racks (35, 36, Fig. 2) on the piston assembly, engaged by pinions (37, 38) on the shaft 39. The piston is reciprocated by the cleaning liquid, the inlet 16 being connectable to the cylinder chamber 65 by operation of a slide member 51 of a reversing slide valve in response to reciprocation of the piston assembly 24, 25. In a modification, (Figs. 4-6, not shown) the racks (114) are formed on the rotatable housing (85) and a different type of slide valve is provided. The nozzle head includes nozzles directed in directions perpendicular to each other; in the modification the nozzles are rotated in opposite directions about the axis of the nozzle shaft (109).
Patent GB-1082436-A (GB)
Title: Improvements in or relating to the preparation of metal salts
IPC: C01D7/16
Filed: 1965-08-17
Abstract: An alkali metal or ammonium salt is prepared by reacting an acid (including acid salts) with the alkali metal or ammonium chloride in the presence of H2O and a water-immiscible amine, agitating the mixture and then separating the organic phase which contains the amine hydrochloride. The amine may be an alkyl or aralkyl amine, which may contain 8-22 C atoms, or mixtures thereof.  The amine may be dissolved in an inert solvent, e.g. xylene, nitrobenzene, methylamyl alcohol or a petroleum solvent. Exemplified acids are H3PO4, CH3COOH, CO2/H2O, HNO3, H2SO4, KH2PO4 and NaHSO3. The chloride may be present as a saturated soln. or a slurry.  The process may be carried out continuously by regenerating the amine with alkali, e.g. CaO, CaOH, and recycling.ALSO:An alkali metal or ammonium salt is prepared by reacting an acid (including acid salts) e.g. acetic acid with the alkali metal or ammonium chloride in the presence of H2O and a water-immiscible amine, agitating the mixture and then separating the organic phase which contains the amine hydrochloride.  The amine may be an alkyl or aralkyl amine, which may contain 8-22 C atoms, or mixtures thereof. The amine may be dissolved in an inert solvent e.g. xylene, nitrobenzene, methylamyl alcohol or a petroleum solvent.
Patent GB-864320-A (GB)
Title: Automatic photo-electric exposure control device
IPC: H03K17/288
Filed: 1958-11-05
Abstract: 864,320. Photo-electric exposure control. ZEISS-STIFTUNG, C., [trading as ZEISS, C. [firm of]] Nov. 5, 1958 [Nov. 7, 1957], No. 35468/58. Class 40(3) A photographic exposure is timed by a condenser charged through a photo-resistor. In the arrangement shown in Fig. 3 part of the exposing light is deflected by a beamsplitting plate 7 on to a light-variable resistor 9 which may be of cadmium sulphide. To make the resistance variation not nearly dependent on the light intensity, the intensity of light reaching the cell is reduced by a grey filter 10 consisting of a rotatable polarizing disc or a variable diaphragm and the spectral sensitivity of the photo resistor may be corrected by means of a colour filter. In the circuit arrangement shown in Fig. 4, the photo resistance 9 is connected in series with resistors 14, 15 the value of which corresponds to that of the photo resistor with medium illumination. This adopts the resistance variation more nearly to the Schwartzchild's constant. The series resistor may also be variable. In the arrangement shown a different one of condensers 16-22, is selected according to the sensitivity of the photographic material. In operation closure of the main supply causes the left-hand side of the bi-stable circuit to conduct operating relay 28 and preparing relay 29. Press button 32 operates relay 33 and, in turn, relay 35 to switch on the exposing light and removes a short circuit from the selected charging condenser. The voltage across the condenser increases at a rate determined by light intensity incident on the photo-resistor 9 until it is sufficient to change over the bi-stable circuit de-energizing relay 35 and ending the exposure.
Patent GB-1094704-A (GB)
Title: Improvements relating to pulse generating circuits
Inventor: SUNDERLAND RONALD FREDERICK
IPC: G01S7/282
Filed: 1963-09-09
Abstract: 1,094,704. Pulse generating circuits. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Sept. 1, 1964 [Sept. 9, 1963], No. 35518/63. Heading H3P. In a circuit of the type in which a charged pulse forming network PFN is discharged via a load so as to generate recurrent pairs of pulses, the pulse amplitude is maintained constant by triggering a switching device such as thyratron V1, in the charging circuit at regular intervals so that the PFN always charges to the same voltage irrespective of variations in the triggering time of the discharge thyratron V2. The invention is preferably applicable to a double pulse radar system in which the first pulse of each pair is triggered from a sync pulse unit without delay whilst the second pulse is delayed at D3. The charging thyratron V1 is triggered at a time after the first pulse determined by delay D1 and at a time after the second pulse determined by delays D1 and D2. The load K may be a magnetron oscillator or a klystron oscillator or amplifier. Diode V3 removes reverse voltage under fault conditions.
Patent GB-1027980-A (GB)
Title: Apparatus for classifying particulate solids
IPC: B07B7/08
Filed: 1964-08-31
Abstract: 1, 027, 980. Classifying solids. POLYSIUS G.m.b.H. Aug. 31,1964 [May 13,1964J, No. 35532/64. Headings B2H and B2P.  An air classifier:Fig. 1 (not shown) which is substantially of the type described in Fig. 1 of Specification 934,424, is modified by having the outer tapered wall 1a of the diffuser 11, Fig. 3, bent at its outlet end 1a<SP>1</SP> in a direction towards the separating wall 5 (of the funnel) between the collecting chambers 12 and 13 for coarse or heavy and fine or light particles respectively. This arrangement reduces the surface contact between the main flow of air drawn through the chamber 13 and the air in the chamber 12 thereby reducing the strength of the secondary swirl 15 due to this contact and hence reducing the possibility for the coarse or heavy particles reentering the main flow and of being entrained thereby into the chamber 13. Entrainment of the coarse or heavy particles is further reduced by a guide plate 16 which defines with the diffuser end wall 1a<SP>1</SP> an annular gap 17 through which secondary air, fed tangentially to an annular channel 18, passes and prevents the coarse or heavy particles from entering the chamber 13. The secondary air also cleans coarse or heavy particles which enter the chamber 12 in the direction of the arrow 20 from adhering fine or light particles. The chamber 12 may be extended upwardly as shown by the dotted lines to further reduce entrainment. The funnel 5 is adjustable lengthwise of the classifier.
Patent GB-1326665-A (GB)
Title: Method of and apparatus for testing the authenticity of pieces of paper
IPC: G01N21/64
Filed: 1971-07-29
Abstract: 1326665 Photo-electric testing NATIONAL REJECTORS Inc GmbH 29 July 1971 [30 July 1970] 35588/71 Heading G1A In a method or apparatus for monitoring an inclusion of fluorescent material in a sheet of paper 1 Fig.3 moved past a light source 2 capable of exciting the material which may be particles into fluorescence for the purpose, for example, of currency validating, the fluorescence emitted from the side of the paper remote from the irradiating lamp is photo-electrically monitored Appropriate filters 6, 7, 10, 13 are included whereby a narrow band width of the incident light is applied for irradiation, and a narrow bandwidth of the fluorescent light is applied to the detectors 8 and 11. Photo-detectors 14 is provided to measure the transmissivity of the paper and its output is applied through an amplitude discriminator to provide an additional validating factor. The output of fluorescence detecting cells 8, 11 is applied to a coincidence circuit and the pulses are counted to produce an accept or reject signal. The investigated areas may be narrow strips along or across the sheet and the particles may be fibres. The period of afterglow may be monitored.
Patent GB-358067-A (GB)
Abstract: 358,067. Actuation of switches. SUBIRA, C. V., 242, Rue Diputacion, Barcelona, Spain. April 4, 1930, No. 10721. Convention date, April 18, 1929. [Class 38 (v).] A switch for breaking the ignition circuit of an internal combustion engine on failure of oil pressure or stoppage of the engine comprises a cylinder 2 having a piston 7 urged upwardly by a spring 8 and connected by a rod 12 to a beam 13 pivoted on a spindle 14. Another cylinder 2<1> has a piston 7<1> connected to the beam 13 by a rod 12<1>, and a spring 8<1> urges the piston 7<1> downwards. A valve 11 on the piston 7<1> fits in a seating 10 in a plug 61 which closes the upper end of the cylinder 2<1>. The spindle 14 carries an insulating disc 18, Fig. 2, having a metal strip 19 around the greater part of its periphery, which strip co-operates with two contact springs 21, 21<1> to which ignition leads 23, 23<1> are connected. The lower ends of the cylinders 2, 2<1> connect respectively with the induction pipe and with the oil-pressure system. When the engine is started, the reduction of pressure in the induction pipe and the increased pressure in the oil system act together to tilt the beam 13 against the action of the springs 8, 8<1> thus rotating the disc 14 and bridging the contacts 21, 211 to complete the ignition circuit. A wing-nut on the spindle 14 is provided for manual operation. Modifications are described in which either or both of the cylinders are replaced by Bourdon tubes.
Patent GB-394393-A (GB)
Title: Improvements in or relating to mechanism for and method of governing the speed of electric motors
IPC: H02P7/06
Filed: 1931-12-29
Abstract: 394,393. Maintaining defined speeds of motors ; interrupters. BURROUGHS ADDING MACHINE CO., 2nd Avenue, Detroit, Michigan, U.S.A.-(Assignees of Pasinski, W. J.; 1988, East Grand Boulevard, Detroit, Michigan, U.S.A.) Dec. 29, 1931, No. 35872. Convention date, Jan. 12. [Classes 38 (iii) and 38 (v).] A series-wound motor is maintained at constant speed by the periodic opening and closing of contacts 16, 18 in circuit therewith, the relative duration of the open period to the closed period being varied by a centrifugal device. The motor shaft 50 carries a disc 51 to which is pivoted at 53 a spring-restrained centrifugal weight 54 having a crank-pin 60. Until the motor attains a predetermined speed the pin 60 is coaxial with the shaft 50, as the speed increases further the pin becomes eccentric to the shaft, the eccentricity increasing with speed. The pin oscillates a lever 44, the shaped end of which engages a roller 46 on a spring 14 carrying the contact 16, and thus the contacts 16, 18 are separated twice during each revolution of the motor, the period of separation depending on the eccentricity of the crank. The motor is stopped by holding the contacts 16, 18 open by operation of a. lever 30. In a modification the roller 46 engages a slot in the end of the lever 44 and is thus positively moved to the contact-closing position as well as to the contact opening position.
Patent GB-1351688-A (GB)
Title: Chair or the like seating unit
IPC: A47C7/02
Filed: 1971-07-30
Abstract: 1351688 Adjustable chairs A R J LJUNGGREN 30 July 1971 [4 Aug 1970] 35889/71 Heading A4J [Also in Division F2] A chair with a tubular metal frame is provided with a seat 13 the front end of which rests on a front cross-bar 5 and the rear end of which is selectively located between adjacent cross-bars of a plurality of rear cross-bars 3, 5, 11 and 12. The rear cross-bars may be replaced by pairs of coaxial pegs mounted one on each of two rear legs. The seat is prevented from slipping backwards by a set screw 14 on one of the front legs 1 or by using a seat which decreases in thickness towards its rear end. A back rest support carrying a vertically adjustable back rest pad 15 is pivotally mounted on the upper end of the rear legs 2, the pad being locked in position by a clamp (19), Fig. 2, (not shown), which comprises a flat body attached to the pad and slidable between two vertical bars (18) forming part of the support and a further flat body which abuts the bars on the rearside thereof and is securable to the bars and the first flat body by a wing nut. A head rest 20 may be pivotally mounted on the upper ends of support bars 21 which project from the back rest and are vertically adjustable with respect to the back rest.