baber/WOPTO huggingface dataset:
Patent GB-1127073-A (GB)
Title: Dynamo-electric machines
IPC: H02K19/36
Filed: 1965-11-20
Abstract: 1,127,073. Control of A.C. motors. HERIOTWATT UNIVERSITY and K. D. STEPHEN. 9 Dec., 1966 [20 Nov., 1965], No. 49416/65. Headings H2A and H2J. A dynamo electric machine has an armature winding connected to an A.C. supply through first control means which allow unequal half cycles of current to flow in the armature winding and a co-operating field winding which is connected to second control means to vary the current flow in the field winding. The control means are operated to provide in the air gap a field travelling at synchronous speed and a second magnetic field either stationary or travelling at a desired speed with respect to the armature as well as a magnetic field either stationary or travelling at a desired speed with respect to the field winding. Armature windings 11 are connected in star or delta to a 3-phase supply a, b, c and the current flowing in alternate half cycles is controlled by S.C.R.'s 12, 13 connected in parallel opposition. In alternative embodiments, Fig. 4 (not shown), a diode may be connected in parallel opposition with either an S.C.R., or a diode in series with a variable resistor. In a further modification two diodes in series with resistors may be used and the supply selectively applied to one series circuit or the other, Fig. 4 (c) (not shown). The field windings S1-13 may be connected in series and shunted by a control circuit including diode 71, controlled rectifier 72 and variable resistance 74 which controls the operation of the S.C.R. and by this means the current induced in the field windings can be varied to alter the rotor magnetic field. In alternative connections the individual field windings may be connected to controllable rectifiers for varying the current, Fig. 6 (not shown). The desired speed is obtained by sequentially varying the setting of the control means, i.e. firing angle or resistor value.
Patent GB-1416220-A (GB)
Title: Waveform producing device
IPC: H03M1/00
Filed: 1973-10-25
Abstract: 1416220 Digital-to-analogue conversion NIPPON GAKKI SEIZO KK 25 Oct 1973 [25 Oct 1972 (4)] 49827/73 Heading H3H [Also in Divisions H1 and G5] A waveform is produced by deriving a sequence of voltages from taps on a potentiometer formed as a diffused resistive layer on a semi-conductor substrate. The potentiometer may thus be small and the ratio between voltages at taps independent of variation of specific resistance from sample to sample. The arrangement described is for generation of tones or the envelopes of tones in electronic musical instruments. Fig. 1 shows an overall arrangement comprising a potentiometer formed on a semiconductor substrate by three resistive layers 2a, 2b, 2c, connected together at 11a, 11b and connected at tapping points to output connections P0 to P63 by vacuum formed aluminium stripes. The sequence of connection is controlled by a reading switch under the control of a digital-to-digital decoder. As shown the resistance between each tap is the same but by adding shunt resistors and by shorting together terminals in appropriate sections of the resistance layer exponential leading and trailing edges of the output waveform may be produced to provide desired attack and decay rates, e.g. for percussion sound (Figs. 9, 10, 16, 17 and 18 and 20, not shown). The circuit arrangement (Fig. 2) comprises a D-A converter controlled by a stepping circuit 21. From the output of the latter are produced erect and inverted signals j, j which are connected row-wise to the gates of MOS field-effect transistors having their collectors connected column-wise to switching transistors U0-U63 connected between the resistor taps and the output terminal, the transistors in each column serving to earth the gate of the associated transistor U and thus to by-pass the 16 V gate supply derived through load transistors L0- L63. The transistors U are formed in pairs (Fig. 3) having a common source region S and respective gate and drain regions G, D. The field effect transistor matrix (Fig. 5) is likewise formed having a common region S for two adjacent columns and respective gates and drains. Connection to the 16 V supply is effected via transistors L0-L63 at the foot of the column. The circuit is covered by an insulating layer.
Patent GB-1211356-A (GB)
Title: Process for the production of 17-ketosteroids
IPC: C12P33/00
Filed: 1967-11-02
Abstract: 1,211,356. 17-Keto steroids by fermentative degradation of cholestanes and sitostanes. G. D. SEARLE & CO. 2 Nov., 1967 [3 Nov., 1966], No. 49830/67. Heading C2U. 17-Keto steroids are obtained by subjecting steroids having a cholestane or sitostane 17- side chain to the fermentative action of an organism of the genus Brevibacterium in an aqueous nutrient medium. By this process, preferably effected with Brevibacterium sp. A.T.C.C. 19653, steroids of the formulµ wherein R is H or C 2 H 5 ; the A and B rings in Formula (II) have one of the structures in which R<SP>1</SP> is H or alkanoyl, or can be a 19- hemisuccinate ester or a 19-ester derived from an amino acid of the #<SP>4</SP>-compounds, and Formula (V) contains an acetoxy radical in the 5-position give, respectively, 19-hydroxyandrost - 4 - ene - 3,17 - dione, 3 - hydroxyestra - 1,3,5(10) - trien - 17 - one and 6#,19- epoxyandrost-4-ene-3.17-dione.
Patent GB-1268519-A (GB)
Title: Toy cash register
Inventor: STAUCH HELMUT
IPC: A63H33/30
Filed: 1969-10-10
Abstract: 1,268,519. Toy cash register. PIKO SONNEBERG VEB. 10 Oct., 1969, No. 49904/69. Heading A6S. A toy cash register comprises a plurality of levers (1), each lever carrying a series of numbered keys (15) and being mounted on a common fulcrum (12) and supported by a separate arm (2) which carries a rack (14) which engages with a pinion (3), one of the pinions being drivably engageable with a single disc (4) bearing numbers on both sides and the other pinions being drivably engageable with a pair of discs bearing numbers on their outer faces only, the associated sequences of numbers being disposed at an angle to one another, and a plurality of locking rods (7) which can engage with notches in the peripheries of the discs to lock them in position. The amount rung up can be seen from both sides of the register. Preferably the discs are mounted on hollow concentric shafts, with the single disc at the centre and the pairs of discs are disposed alongside in decreasing order of size. The locking rods may be disconnected by operation of a cancelling key (10) or by the register drawer.
Patent GB-1012761-A (GB)
Title: Apparatus for forming packets from blanks in packaging machines
IPC: B31B1/74
Filed: 1963-12-18
Abstract: 1,012,761. Packaging-machines. O. NIEPMANN, and F. NIEPMANN, [trading as MASCHINENFABRIK FR. NIEPMANN & CO.]. Dec. 18, 1963 [March 27, 1963], No. 49935/63. Heading B8C. [Also in Division B5] Apparatus for making bags and depositing them in the path of packaging means advancing their contents, e.g. wrapped batches of cigarettes, comprises a series of formers mounted on a chain conveyer extending vertically or horizontally above a packaging track, blanks being fed into the former path and carried past folding and bottom sealing means to a draw-off device which lays them on the track. The conveyer moves intermittently. The blanks are fed by conventional means including a glue applicator 14 and reciprocating finger 15 to overlie each former 6. Known brushes and tuckers 16 tube the blank about the former and a spring-located member 21 is released to clamp the seam. Conventional folders 17, 18, 19 form the end closure which is sealed by a heated element 20. At the draw-off position a finger 23 intercepts a slide 24 to push back the member 21. The former is in two halves 6c, 6d and the latter is movable by a fixed obstruction 28, Fig. 7, to reduce the former width so that a vertically reciprocable suction gripper 29 may pull the bag downwards off the former. The gripper 29 is rotated to turn the bag through 90 degrees about its longitudinal axis, Fig. 1, and further grippers 33 pivot clockwise downwards to lay the bag in the path of an oscillatable stop 5. The stop retains the bag while a conveyer dog 2 forces in the contents and carries the package through the machine. Several bag forming devices and packaging tracks may be arranged side by side (Fig. 2).
Patent GB-1395990-A (GB)
Title: Preparation of flame retardant cellulosic materials
IPC: D06M15/673
Filed: 1972-10-30
Abstract: 1395990 Flame proofing HOOKER CHEMICALS & PLASTICS CORP 30 Oct 1972 [10 Nov 1971] 49982/72 Heading D1P Cellulosic materials are rendered flame retardant by treatment with an aqueous solution of a polymerisable methylol phosphorus compound obtained by reacting a tetrakis (hydroxymethyl) phosphonium acid salt with from 0.5 to 1.5 mole proportion of ammonia in the presence of urea, thiourea, biuret, guanidine, cyanamide, dicyanamide or ethyleneurea and contacting the treated material with an aqueous solution containing ammonia or a functional equivalent thereof to cure the methylol phosphorous compound.  The cellulosic material may be cotton cloth, regenerated cellulose, a blend of cotton and/ or regenerated cellulose with polyester, wood or paper.  The tetrakis (hydroxymethyl) phosphonium salt may be the chloride, bromide, sulphate, phosphate acetate or propionate. Preferably it is mixed with aqueous urea or thiourea (0.25 to 2 molar proportions) and ammonium hydroxide (0.5 to 1.5 molar proportions) added over 30 minutes with vigorous agitation whilst the temperature rose to 74C. After standing for 24 hours the pH fell from 2 to 1. The pH is reduced to from 4 to 7 by addition of triethanol amine, tributyl amine, trihexylamine, triisopropanolamine, tripentanal amine, sodium acetate NaOH or KOH. The aqueous solution is applied by dipping spraying or padding and the fabric squeezed to produce 100% pickup. The fabric is dried in a 120 to 200C oven without fixing the resin and then passed for 1 to 5 minutes through a 3 to 10% aqueous solution of ammonia, of a source of ammonia such as ammonium formate, ammonium acetate, ammonium sulphate or an amino compound containing at least two reactive hydrogen atoms such as primary amines, hydrazine or an alkyl hydrazine, plus alkali metal carbonate and bicarbonate to cure the resin and regenerate the urea or thiourea. The resin is fast to bleaching with hydrogen peroxide or alkaline perborate and to home washing.
Patent GB-1249653-A (GB)
Title: A shot pattern control device
Inventor: ASHBROOK CLIFFORD LOGAN
IPC: F41A21/40
Filed: 1968-10-22
Abstract: 1,249,653. A shot pattern-control device. C. L. ASHBROOK, and W. G. WING. 22 Oct., 1968 [15 Nov., 1967], No. 50070/68. Heading F3C. A shot pattern-control device for mounting on and forming an extension of the barrel of a shotgun comprises a body defining a bore which is shaped along a length thereof to consist of two pairs of wall surfaces, the walls of each pair facing each other. The walls of one pair are each disposed at an angle to a first plane containing the longitudinal axis of the tubular body and the walls of the other pair are each disposed at an angle to a second plane perpendicular to the first plane and containing the longitudinal axis of the tubular body (Figs. 5, 6, not shown), the angles being such that the cross-section of the said length of the bore has a major axis and a minor axis. The bore may be provided along said length with shot diverting ridges which decrease in height towards the rear of the length. In the construction shown the device comprises two parts 3, 5 screwthreadedly connected, the rear part 3 being provided with apertures the forward corners 23 of which are curved to enhance turbulence during firing of the shotgun to attenuate the noise of the shot. The forward walls of the apertures and the rearward end of the forward part 5 which coincides therewith are angled with respect to the vertical plane through the device to deflect explosion gases.
Patent GB-1001858-A (GB)
Title: Improvements in and relating to 17ª‡-alkoxy-steroids
IPC: C07J7/00
Filed: 1963-12-19
Abstract: The invention comprises steroids of the formula <FORM:1001858/C2/1> (wherein R1 is hydrogen, methyl, fluorine or chlorine and R2 is methyl, ethyl or propyl) and the corresponding 1,2-and/or 6,7-unsaturated steroids; and their preparation by (1) etherifying a corresponding 17a -hydroxy steroid; or (2) liberating the 3- and/or 20-keto groups of a corresponding steroid in which the 3- and/or 20-keto groups are functionally modified; or (3) oxidizing and/or isomerizing (by the action of acid or alkali) the corresponding D 5-3-hydroxy-or D 5-3-keto-steroids; and, if desired, isomerizing 6b -substituted products to corresponding 6a -compounds; and dehydrogenating in the 6,7-and/or 1,2-positions by microbiological or chemical means.  In the course of acid isomerization keto groups may be liberated from their functional derivatives. Suitable etherifying agents for use in (1) are alkyl halides. Suitable starting materials for use in (2) are ketals, thioketals, enamines, enolacylates, enol ethers and thioenol ethers, and the free keto groups may be liberated from them with acidic agents. In (3) oxidation may be effected with chromium trioxide, by the Oppenauer method, with a p-benzoquinone (when a 6,7-double bond is also introduced) or microbiologically, for example with micro-organisms of the species Flavobacterium dehydrogenans; and isomerization may be effected with acid or alkali; functionally modified keto groups also being liberated when acid is used.  For D 1 and D 6 dehydrogenation an extensive list of reagents and micro-organisms is provided.  The above methods may also be used for the preparation of starting materials. Examples are given.  17a -methoxy - 6a  - methyl - 16 - methylene - 5 - pregnene - 3,20 - dione bis - (ethylene - ketal) is prepared by ketalization and subsequent methylation of 6a -methyl-16-methylene-17a -hydroxyprogesterone. Other ketal starting materials are prepared similarly.  The steroids of the invention, which are progestational agents, may be made up into pharmaceutical compositions with suitable carriers.  Tablets, pills, emulsions and solutions are mentioned. They may contain preserving, stabilizing or wetting agents.
Patent GB-1211245-A (GB)
Title: Improvements in or relating to wall plugs
Inventor: MORTENSEN LOUIS AACKERSBERG
IPC: F16B13/02
Filed: 1967-11-07
Abstract: 1,211,245. Wall plugs. L. A. MORTENSEN. 7 Nov., 1967 [9 Nov., 1966], No. 50530/67. Heading F2H. A wall plug made of an elastic or plastically resilient material e.g. polyvinylchloride having a hardness in the range 59-69. Shore hardness 0À2 at 20‹ C. room temperature has longitudinal recesses on both the inside and outside; it may comprise two portions, the inner portion being of harder material.
Patent GB-1262033-A (GB)
Title: Improvements in wide-band frequency-converting and amplifying circuits
IPC: H03F3/24
Filed: 1970-10-23
Abstract: 1,262,033. Frequency changers; automatic phase control. THOMSON-C.S.F. 23 Oct., 1970 [24 Oct., 1969], No. 50569/70. Headings H3A and H3F. A frequency converter and amplifier comprises: an input 7 coupled to one input of an adder 9; a variable phase shifter 10 coupled to the output of the adder; a first mixer 2 having one input coupled to the output of the phase shifter; an amplifier 1 coupled to the output of the mixer; a second mixer 5 having one input coupled to the output of the amplifier 1, and an output coupled to a second input of adder 9; and an oscillator 16 feeding the second inputs of both mixers. The feedback loop ensures linearity of the system, the phase shifter being automatically adjusted to ensure that the two inputs to the adder 9 are in antiphase, by a control loop comprising phase comparator 13. If the phase relationship is correct, the output from comparator 13 opens gate 61 to apply the feedback signal to the adder 9, and inhibits gate 65. If the phase relation is incorrect, gate 61 is inhibited, and gate 65 is enabled to feed clock pulses from generator 66 to step counter 63. The output from the counter is converted to a control signal which adjusts the phase shifter 10. Closure of a switch 67 ensures maintenance of phase conditions corresponding to a period of operation at a given frequency.
Patent GB-507144-A (GB)
Abstract: 507,144. Television ; kinematograph projectors. KOLSTER-BRANDES, Ltd., and SMYTH, C. N. Dec. 3, 1937, No. 33555. [Class 40 (iii)] [Also in Group XX] A television receiver is combined with a film projector so that the same lens projection system and/or the same light source are used both for television and for film projection. A cathode-ray tube receiver CR, Fig. 1, may be adapted for film projection by moving a film between the CRT and its normal projection lens L by means of a pivoted frame, Fig. 2 (not shown). The film is fed intermittently from feed drum D1, Fig. 1, through the gate G to the take-up drum D2 by means of sprockets S1, S2, S3. The CRT is made to function simply as a light source and is preferably defocused during film projection. The cathode ray may be displaced after each obturation to obtain interlaced scanning. The film feed mechanism may include a contact device to obturate the light source during movement of the film. Sprocket S2 is driven from shaft P, Fig. 3, by means of the Geneva stop mechanism G, H, a cam C mounted on shaft P controlling the switch CB. The latter closes during each advance of the sprocket S2 and also closes at intervals during the projection of each frame to reduce flicker. This system may be adapted for the recording of the television image on a film.
Patent GB-1211094-A (GB)
Title: Improvements in or relating to air filter plants
IPC: B01D46/04
Filed: 1967-11-08
Abstract: 1,211,094. Air filter. H. NIELSEN & SON MASKINFABRIK A/S. 8 Nov., 1967 [8 Nov., 1966], No. 50901/67. Heading B1T. A filter for removing solids from smokeladen air comprises a plurality of open-ended, outward flow fabric filter tubes 5 extending from air inlet chamber 4 to solids outlet hoppers 17 and enclosed by a chamber which is divided into sections 10. Each section communicates with a downstream fan 14 by a passage 11 or 12 which is selectively closable by a pivoted or sliding damper (Figs. 3, 4, not shown) which also controls an opening to atmosphere. By closing one passage at a time and allowing ambient air to be drawn into that section by the generally sub-atmospheric pressure in the filter, the tubes therein are cleaned and shaken by the reverse flow. Dampers may be operated manually or mechanically from a central point, and may each be shifted several times to shake tubes repeatedly. Before restoring normal filtering flow to a section, other dampers 28 are opened so that ambient air carries any dust from the downstream sides of sections 10 up into inlet chamber 4. Dust passes from hoppers 17 into bags 18 or onto a conveyor belt. The temperature of incoming air is boosted by hot air from an oil burner 8. Filtered air is discharged into chimney 16.
Patent GB-1573572-A (GB)
Title: Tube-plates for glass tube bundle heat exchangers
IPC: F28F19/04
Filed: 1977-12-09
Abstract: The shell-and-tube heat exchanger consists essentially of glass and has a tube plate (4) which is provided with a plastic coating (5) against aggressive media. The tube plate (4) is preferably made from steel. In order to meet the requirements for pressure and temperature in the case of large nominal diameters, the plastic coating (5) expediently consists of a thermoplastic tetrafluoroethylene copolymer. This shell-and-tube heat exchanger therefore has a tube plate (4) which does not sag but which permits the separate sealing of each individual glass inner tube and facilitates the exchange of heat between two aggressive media. <IMAGE>
Patent GB-1157960-A (GB)
Title: Reinforcement of Concrete Roads
Inventor: BURKS ALBERT EDWARD
IPC: E01C23/04
Filed: 1965-12-02
Abstract: 1,157,960. Positioning slab reinforcement. NATIONAL RESEARCH DEVELOPMENT CORP. 30 Nov., 1966 [2 Dec., 1965], No 51274/65. Heading E1G. In laying reinforced concrete road slabs, the longitudinal reinforcing members 13, which are not laterally interconnected, are raised to position within the thickness of the slab while the slab is conformed to its desired profile. The reinforcing rods 13, which the of ribbed, or like deformed section, are laid on the road bed and secured at the commencing end of the slab preferably to the joint dowel bars. Concrete is poured and the rods are lifted by the engagement of transverse feet on vertical shafts 11. The shafts 11 are carried by a paver having a conforming, or screed, plate 15 which moves to render the slab to the desired profile. The shafts are rotatable to engage and disengage the rods at the ends of travel and may have one or two transverse feet. The feet may be replaced by a transverse bar having lower loops for the reception of the reinforcing rods and upper loops for hooks carried by the slip-form paver.
Patent GB-1522380-A (GB)
Title: Sewing machines
IPC: D05B57/14
Filed: 1975-12-16
Abstract: 1522380 Sewing machine, bobbin case support MEFINA SA 16 Dec 1975 [19 Dec 1974] 51538/75. Heading D1G The bobbin carrier 1 of a sewing machine is suspended (Fig. 3) relatively to a plate 2 by pins 3 which are urged into contact with the carrier but allowed to retract therefrom in succession by a cam face 10 on the rotating dish 6 which comprises the rotary hooks of the machine. In another embodiment each pin is controlled by a multiarmed lever (21, 22 Fig. 5). As shown, two levers 21 have followers 28 which abut an upper cam profile 29 while the two levers 22 are controlled by a lower cam 30, the cams being out of phase and, in a modification, adjustable angularly relative to each other. The pins forming the joining members, can be replaced by levers and the control of such members may be electromagnetic. The pins 3 could in a spinning or wire drawing machine be retractably mounted in the bobbin case and controlled by a cam acting on the inner ends of the pins.
Patent GB-1210378-A (GB)
Title: Sequencing valve, more particularly for air-conditioning plants with induction apparatus
Inventor: FACKLER REUDI
IPC: F16K11/16
Filed: 1967-11-13
Abstract: 1,210,378. Heating and cooling systems. FR. SAUTER A.G. 13 Nov., 1967 [11 Nov., 1966], No. 51591/67. Heading F4U. [Also in Division F2] An air-convector 5, forming part of an airconditioning plant provided with induction apparatus is supplied with cold water or hot water or is isolated, depending upon the external conditions desired, by two valves 9, 10 of which the first serves to control and direct the flow of hot water from an inlet 17 to a return 18, the inlet 17 and return 18 being connected to a heat converter, and the second serves to control and direct the flow of cold water from an inlet 19, to a return 20, the inlet 19 and return 20 being connected to an evaporator. In operation, and when the system is in the position shown, hot water from the inlet 17 enters chamber 2, line 6, convector 5, line 8, chamber 1 and finally return 18, the cold water system being closed upon itself with water from the inlet 19 passing directly to the outlet 20. Upon depression of an actuator 14 and due to the uneven tensioning of springs 15 and 16, valve 10 remains in the position shown but valve 9 is moved downwardly to close the hot water system upon itself, the convector thus becoming isolated (Fig. 1b, not shown). Upon further depression of actuator 14, valve 9 remains in its new position and valve 10 moves from the position shown to its second position in which cold water from inlet 19 enters chamber 1, line 8, convector 5, line 6, chamber 2 and finally outlet 20, so cooling the convector (Fig. 1c, not shown).