baber/WOPTO huggingface dataset:
Patent GB-1079173-A (GB)
Title: Improvements in or relating to transistor multivibrator circuits
Inventor: ARNOLD JOHN SPENCER
IPC: H03K3/282
Filed: 1963-05-02
Abstract: 1,079,173. Transistor multivibrators. AUTOMATIC TELEPHONE & ELECTRIC CO. Ltd. May 1, 1964 [May 2, 1963], No. 17438/63. Heading H3T. A transistor multivibrator has a two-stage amplifier inserted in one only of the crosscoupling paths, between the collector of one transistor and its coupling capacitor. This may prevent inequality of the two timing periods due to the loading of the output transistor. In the Figure (not shown), the additional amplifier comprises two common emitter stages in cascade, the second stage also being used as an emitter follower to feed an output transistor.
Patent GB-1152682-A (GB)
Title: Apparatus for Simultaneously False Twisting Two Yarns
IPC: D02G1/02
Filed: 1965-12-28
Abstract: 1,152,682. Finishing and guiding yarns. DEERING MILLIKEN RESEARCH CORP. 28 Dec., 1965 [28 Dec., 1964], No. 17476/68. Divided out of 1,152,681. Headings DID and D1F. In apparatus for simulating false-twisting, heating and finally separating two thermoplastic yarns initially supplied in adjacent side-by-side relationship e.g. as described in the parent Specification, the angle of separation of the yarn is a function of, and varies inversely as, the length of the yarn path between the false-twisting and separating means: the provision of yarn guide pulleys on an adjustably movable arm or of an adjustable guide bar Figs. 13 and 14 (not shown) therefore enables a selective determination of such angle.
Patent GB-1061513-A (GB)
Title: A folding device for box making machines
IPC: B31B50/54
Filed: 1965-04-26
Abstract: 1,061,513. Making folding boxes. E. DORING, J. S. FERDECKE, and M. PROPPER, [trading as DORING u. A. ARBEITSGEMEINSCHAFT f. ENTWICKLUNG VON PAPIER. VERARBEITUNGSMASCHINEN]. April 26, 1965 [April 24, 1964], No.17528/65. Heading B5D. A folding device for folding down the rear flap of folding boxes comprises a chain 40 with swivel mounted hooks 41 above the belts conveying the blanks 1 and moving at a speed greater than the speed of the belts, the lower run of the chain being inclined upwardly in the direction of movement and the folding hooks being free to swing backwards during the first part of their movement in the lower run, and unable to swing during the latter part of the movement.
Patent GB-1096185-A (GB)
Title: Improvements in or relating to methods of making metal kettles, teapots or like utensils and to metal utensils made thereby
Inventor: PATEL BABUBHAI RAMBHAI
IPC: B21D51/22
Filed: 1965-04-26
Abstract: 1,096,185. Making hollow-ware; seaming. B. & J. ALUMINIUM MANUFACTURERS Ltd. Feb. 9, 1966 [April 26, 1965], No. 17577/65. Headings B3A and B3J. A method of forming a double seam between two parts 4, 8 of an aluminium kettle, teapot &c. comprises providing flat annular flanges 2, 9 on the parts and folding the flanges to form the seam 9, Fig. 12. The parts 4, 8 are formed by pressing operations, followed by a rolling operation to form the flange-radius (3), Fig. 1 (not shown), into a sharp angle (6) (Fig. 2, not shown), and flange-trimming operations. The double-seam is formed by rolling the cylindrical margin 10 of the top flange 9 beneath the lower flange 2 and then turning the seam against the lower part. An opening is formed for a lid. In other forms a spout and a handle are fitted, Figs. 13, 14 (not shown). A kettle or teapot may be formed with a rolled, rather than flattened, seam, Fig. 16 (not shown).
Patent GB-542189-A (GB)
Title: Improvements in starters for electric motors
IPC: H02P1/20
Filed: 1940-12-13
Abstract: 542,189. Electric motor control systems. BRITISH THOMSON -HOUSTON CO., Ltd. Dec. 13, 1940, No. 17626. Convention date, Dec. 14, 1939. [Class 38 (iii)] In a motor starting arrangement comprising sequentially operated contactors 16b, 17b, 18b operating to cut out steps of resistance 14 in the armature circuit, the contactors have separate magnetic cores linked by a common operating winding 19 into which a decaying current from a condenser 20 is fed, the cores being adjusted so that the contactors operate at different flux values. Starting is effected by a push-button 21 which establishes a charging circuit for condenser 20, the resistance 28 being short-circuited; coil 19 is energized and the contactors are opened. Contacts 29a, 29b are closed to energize winding 22 which closes contact 22c to complete the armature circuit through resistance 14. The circuit of coil 19 and the charging circuit of condenser 20 are interrupted at contacts 22b whereupon the condenser discharges through resistance 28 to produce a decaying energization of coil 19 which allows the contactors to close in succession to cut out resistance steps in the armature circuit. The necessary adjustment of the contactors is effected by using shims to provide different air gap settings, or by different settings of the closing springs 16c, 17c, 18c. Specification 518,391 is referred to.
Patent GB-384320-A (GB)
Title: Improvements in or relating to hollow steel screw propeller blades and the method of
IPC: B21D53/78
Filed: 1931-04-16
Abstract: 384,320. Making screw propellers. SQUIRES, J., The Terrace, Hagerstown, Maryland, U.S.A. April 16, 1931, No. 17661/32. Divided on 383,958. Drawings to Specification. [Classes 83 (ii) and 83 (iv).] Stamping ; working at specified temperatures. -A cylindrical tubular blank with closed tip end is formed into a propeller blade by being heated to a temperature above the critical point, pressed externally into the blade shape whilst simultaneously subjected to internal fluid pressure, then reheated and pressed into final shape in cold dies until the blank is below the critical temperature. The tubular blank is subjected to a preliminary forming operation according to Specification 383,958.
Patent GB-145583-A (GB)
Title: Improvements in de-gumming textile materials
IPC: D06L1/14
Filed: 1920-06-29
Abstract: In an amylolytic process for degumming textile materials, such as fabrics, a bath which may be prepared from ordinary hard water is employed containing animal amylase, such as pancreatin, neutral salts of alkali or alkaline-earth metals such as sodium or calcium chloride, and biliary salts, such as purified ox gall, whereby the amylase is protected and the bath may be used at a temperature of 58 DEG  C.
Patent GB-477409-A (GB)
Title: Improvements in devices for extracting pats of butter and the like from bulk
IPC: B26D1/25
Filed: 1936-06-27
Abstract: 477,409. Butter &c. cutters. ALLEN, M. H. June 27, 1936, No. 17880. [Class 87 (ii)] Apparatus for extracting portions of butter &c. of predetermined weight from a block comprises in combination the following devices. A gauge plate 1 is adapted to be placed on the block with the lip D resting against the front face. A knife 2 is placed against the gauge and is pressed into the butter flush with the top. The gauge is removed and a guide plate, Fig. 3, is plated flat against the side of the butter with a projection A engaging a slot C in the knife. An extractor, Fig. 4, rests on a projection E of the guide plate and is pushed into the butter as far as the knife 2. The extractor comprises two blades F, G at right angles attached to handles H, J sheathed one over the other. The blade F is withdrawn first leaving the severed pat resting on the blade G. When a row of pats have been extracted, the knife 2 is pressed down again its own depth and the operations are repeated.
Patent GB-334618-A (GB)
Title: Improvements in apparatus for quantitative spectrum analysis
IPC: G01J3/28
Filed: 1929-06-11
Abstract: 334,618. Hilger, Ltd., A., and Twyman, F. June 11, 1929. Spectroscopes.-The relative proportion of an element in a specimen is determined by comparing the intensity of a line corresponding thereto with that of a line corresponding to another element by means of apparatus in which spectrum parts are brought side by side and means are provided for relatively moving the spectrum parts so as to bring predetermined lines into juxtaposition for comparison. The comparison of the intensity of the lines is effected by equalizing their intensity, e.g. by means of a tint wedge. In one example, a tube T slides in the eyepiece end of a spectroscope S and is fitted with two glass prisms G, G<1> having sloping faces. One of the prisms G<1> is tilted forward and projects in front of the other. The prism G is pivotally mounted and is operated by a handle H so as to adjust the relative position of the parts A, B of the spectrum, seen in the eyepiece, so that the predetermined lines, e.g. 1, 3 are in juxtaposition. A tint wedge W is mounted in the path of one of the spectra and may be rotated until the apparent intensities are equal. The calibration of the wedge gives the relative intensity of the spectra and the relative proportion of the elements. In a modification one part of the spectrum may be separated perpendicularly to the slit and the movable part of the spectrum adjusted between them so that widely separated lines may be compared with one another. The apparatus may be used with photographic, photo-electric or thermal apparatus.
Patent GB-936570-A (GB)
Title: Improvements in or relating to hearing aids
IPC: H04R25/02
Filed: 1962-05-08
Abstract: 936,570. Hearing aids. SIEMENS-REINIGER-WERKE A.G. May 9, 1962 [May 12, 1961], No. 17913/62. Class 40 (4). All the electrical components are contained in a housing 1 which is worn behind the ear, supported by a hook-like member 7 which rests on top of the ear; a first sound passage runs from the receiver through the housing 1, the supporting member 7, and a flexible tube 11 to an ear-plug 13, and a second sound passage runs from the microphone through the housing 1 and the supporting member 7 to a forwardfacing aperture 32 in the wall of the supporting member 7.
Patent GB-1382924-A (GB)
Title: Method and apparatus for making animated cartoons
IPC: G03B21/00
Filed: 1972-04-18
Abstract: 1382924 Animated cartoons; optical projection apparatus OPTICAL SYSTEMS CORP 18 April 1972 [21 April 1971] 17967/72 Headings G2E and G2J Apparatus for use in making animated cartoons includes a projector by means of which images at windows 1, 2 on a drawing table 3 can be projected in superimposition on to a larger, similarly proportioned, window 17. A light source 6<SP>1</SP> locatable above one of the windows 1, 2 projects an image drawn on either of films 4, 5 via light paths 18, 20 to the window 17. Lap dissolve may be achieved by polarizing screens 23, 24, 25, screen 25 being rotatable. In cartoon making the enlarged projected image permits more accurate drawings to be made and the parts 11, 12, 13, 14, 16, 19, 23, 24, 25 may be slid away so direct superimposition of the image on one of the films 4, 5 on to the other can be achieved by prisms 7, 9 and lens 8. Alternatively, Fig.3 (not shown), the mirrors 11, 19 may be replaced by beam-splitters, which permit direct superimposition without having to slidably mount the above mentioned parts. A second light source 28 may be provided to episcopically project an opaque object laid on window 17 on to the films 4, 5 located at windows 1, 2; this could provide the background to the animated foreground being drawn at window 1 or 2.
Patent GB-153941-A (GB)
Title: Improved variable stroke reversible rotary pump and means for controlling same
IPC: F04B1/10
Filed: 1919-07-21
Abstract: 153,941. Shepherd, F. W. H. July 21, 1919. Eccentric-actuated pumps; stroke, varying; revolving-cylinder pumps; waste liquid, catching.-A variablestroke reversible rotary-cylinder pump comprises a rotor 2 mounted on a central valve 1 and carrying a number of radial cylinders in which pistons 3, 3a are reciprocated by an adjustable eccentric two-part track 6, 7 engaging rollers 5 carried by the pistons. Leakage liquid collecting in the vessel 10 is thrown by the cylinders against plates 14, 15 from which it falls into the tank portion 8 of the casing 9. The leakage is returned to the pump bv a pipe 16 connected to the valve 1. The stroke of the pistons may be varied from zero to a maximum by moving the eccentric 6, 7 transversely of its axis by means of stroke-controlling pistons in cylinders 23, 24 connected by pipes 17, 18 to the valve ducts. A lever 25 is pivoted on a slidable member 32 connected by rods and brackets 37 to the eccentric. One end of the lever 25 is connected to a telemotor &c., and the other end to a part of the apparatus operated by the pressure liquid of the pump, such as the tiller of a rudder, to act as a cut-off. The pump is started from zero stroke position by moving one end of the lever 25 slightly, thereby moving the member 32 and the eccentric against the action of one or other of the springs 33, 34. The pump now delivers pressure liquid to one or other of the cylinders. 23, 24, according to the direction of rotation of the pump, and the consequent movement of the piston 23a against the action of the spring 35 completes the movement of the eccentric. The stroke is automatically adjusted so that the power delivered from the pump never exceeds the pre. determined power of the motor driving the pump. The central valve 1 is axially adjustable.
Patent GB-1006155-A (GB)
Title: Pyrimidine derivatives and their manufacture
IPC: C07D239/553
Filed: 1964-05-01
Abstract: The invention comprises compounds of the formula <FORM:1006155/C2/1> in which R is a hydroxy or amino group, R1 is a hydrogen atom or a C1-4 alkyl or C2-4 acyl group, X is a halogen atom and the bond shown as a broken line indicates that the substituent attached thereby is optional.  The compounds may be prepared by additively reacting a 4-substituted 2-oxo-5-fluoro-pyrimidine of the formula <FORM:1006155/C2/2> with an agent yielding the atom X and the radical OR1, e.g. a hypohalous acid or a C1-4 alkyl ester thereof, and, if desired, dehalogenating the resulting compound of the formula <FORM:1006155/C2/3> to yield the corresponding compound in which the substituent X is absent.  The agent yielding the atom X and the radical OR1 may be prepared in situ.  The 6-alkoxy or 6-acyloxy compounds may also be prepared by etherification or esterification, respectively, of the corresponding 6-hydroxy compounds.  The 6-butoxy compounds may also be prepared by reacting the corresponding methoxy compound with a butanol in the presence of a catalyst, e.g. HBr. The optically active forms of the compounds of the invention may be prepared by oxidation of the optically active forms of the corresponding l-nucleosides.  Dehalogenation of compounds of the formula III may be carried out by means of chemical reducing agents, e.g. on alkali metal hydrosulphide, or by catalytic hydrogenation. Pharmaceutical compositions for enteral or parenteral administration comprise a compound of the invention together with a pharmaceutical carrier.  The compositions, which have germicidal, antimetabolic and antineoplastic activity, may be formulated as tablets, dragees, suppositories, capsules, solutions, suspensions or emulsions.
Patent GB-1493242-A (GB)
Title: Polyurethane-coated fabric and processes of providing the coating
IPC: D06N3/14
Filed: 1976-05-04
Abstract: 1493242 Polyurethane foams W R GRACE & CO 4 May 1976 [5 May 1975] 18189/76 Heading C3R [Also in Division B2] A process for coating a fabric comprises spreading a composition comprising a polyamine, e.g. an aliphatic diamine or triamine, carbamate and a liquid, free isocyanate group containing reaction product of a polyisocyanate with a polyhydroxy compound, e.g. a polyether polyol, on to a release surface; heating the coating to liberate carbon dioxide and polyamine from the carbamate and to cause gelling and partial foaming; placing the fabric over the gelled coating; heating the coated fabric to complete the foaming and cure and finally removing the release surface from the coated fabric. In other embodiments the composition may be fully foamed and cured before applying to the fabric which is secured to the coating by a conventional adhesive or the composition may be coated directly on to the fabric. An unfoamed skin coating may be applied to the release surface before the composition is spread on to it. In an example a composition comprising diethylene triamine carbonate and a reaction product of isophorone diisocyanate with a mixture of polypropylene diol, triol and diethylene glycol was used to coat a nylon velour fabric. The composition may be used to coat cotton knitted fabric and other thin fabrics.
Patent GB-332361-A (GB)
Title: Improvements in or relating to shock absorbers
IPC: F16F9/26
Filed: 1929-06-13
Abstract: 332,361. Stevens, A. H., (Delco Products Corporation). June 13, 1929. Fluid - friction vibration - dampers. - Vehicle shock-absorbers of the type in which an operating lever projects through the side of a cylinder having two closed ends and reciprocates a double piston is fitted with a unitary valve mechanism one for each part of the piston comprising two valve members acting in opposite directions with different resistance to the flow of liquid and is also provided with a metering pin which varies the resistance according to the position of the double piston. The double-ended cylinder is bolted to the vehicle frame and an operating lever connected to the axle is mounted on the spindle 35 which carries a short lever 44 adapted to reciprocate the double piston element 51, 52 through rollers 54, 55. Each piston is formed with a hole into which is pressed the hollow stem 61, of the valve unit. On the outside of the stem is mounted a valve 62 which is kept up to its seating on the piston by a light-spring and allows pra.ctically unrestricted now of liquid from the central chamber 32 through the passage 59 into the cylinder. Inside the hollow stem is arranged a one-way valve 63 held on to its seat by a strong spring 67 so as to impose considerable resistance to the passage of liquid from the cylinder into the central chamber 32. The piston 51 thus resists movement to the left and piston 52 movement to the right. Additional leakage orifices are provided by the metering pin 70 which passes through openings in the pistons and is held against endwise movement by the ends of the cylinder. The pin is formed with tapered or other shaped parts 71, 72, 74 which impose varying resistance to the flow of liquid according to the position of the double piston.
Patent GB-1312685-A (GB)
Title: Wheel-slip sensing arrangements
IPC: G01P3/50
Filed: 1970-04-17
Abstract: 1312685 Sensing wheel slip electrically ROBERT BOSCH GmbH 17 April 1970 [19 April 1969] 18351/70 Heading G1N [Also in Division F2] In a wheel slip sensing arrangement a pulse train the pulse frequency of which is dependent upon the angular velocity of the wheel is applied to a monostable trigger circuit via a pulse shaper. The output 118 from a pulse or A.C. generator 18 of the variable reluctance type, electromagnetic, fluidic or light generator coupled to the vehicle axle of each wheel is squared by Schmitt trigger  34 and then differentiated by circuit 35 to produce a train of sharp pulses 135 which trigger a monostable trigger circuit 36. The output 136 from the monostable circuit 36 is averaged, 137, by low pass filter 37 and fed to integrating member 38 provided with an adjustable reference voltage from circuit 39, the output of the integrator 38 controlling the relaxation time of the monostable circuit 36. During unbraked periods the output from the low pass filter 37 is constant as shown on the left hand side of Fig. 3 and the circuit controlling the activation of the brakes, Fig. 1 (not shown) is unenergized. If the brakes of the vehicle are applied fiercely and the wheels begin to slide so that the frequency of pulses 135 decrease the output voltage 137 of the filter 37 decreases in the first instant. When the voltage 137 falls below the lower threshold of a hysteresis circuit 42 i.e. level-b the hysteresis circuit switches and triggers monostable circuit 43 having a natural relaxation period of 200 ms. The output of circuit 43 acts on a solenoid valve by way of gate 44 and amplifier 47 to reduce the pressure in a braking system and release the brakes. When the wheel is subsequently accelerated again the frequency of pulses 135 increases and the output voltage 137 increases again so that the upper threshold of the hysteresis circuit 42 is exceeded which then switches off prematurely the output 143 from monostable circuit 43 thus resulting in the brakes being applied again. If the sliding wheel should not be accelerated sufficiently e.g. on a very smooth road, the interval between pulses 136 is also not reduced again and the output voltage 137 of the filter does not increase sufficiently to trigger the hysteresis circuit and in this case monostable circuit 43 terminates automatically after 200 ms and the brakes are applied again momentarily. In order to prevent the circuit being activated at very low speeds AND circuit 44 is included input 45 of which is supplied with a signal from a gate circuit common to all the wheels, Fig. 4 (not shown) only when the peripheral speed of all the wheels is above a speed of 7 km/h, the gate circuit being supplied with the signals at terminals 48 from integrators 38 of all the wheels.
Patent GB-152788-A (GB)
Title: Improvements in washing machines
IPC: D06F15/00
Filed: 1919-07-24
Abstract: 152,788. Coleman, C. J. July 24,1919. Washing-machines with clothes carried upon moving frames.-The frame 1 is reciprocated by a lever 2 operated by a steam piston 3, and the exhaust steam from the cylinder 4 passes through a coil 9 in the track.
Patent GB-485714-A (GB)
Title: Improvements in or relating to fastener-applying implements
IPC: B25C5/02
Filed: 1937-07-02
Abstract: 485,714. Stapling. BOSTON WIRE STITCHER CO. July 2, 1937, No. 18476. Convention date, Nov. 11, 1936. [Class 89 (iii)] A hand tool for stapling comprises two telescoping sections 3, 4 pivoted together at 5. The section 3 includes a finger-grip 20 and a fixed anvil 17 with clinching dies 18 and a longitudinal recess 19. A magazine arm 31 pivoted to the section 3 at 37 comprises a core 35, Fig. 6, to support arched staples S and a channel casing the side walls 33 of which are, at their forward ends, inturned as at 42 to define, with the front end of the core and the inner face of a gate member 46, a driver passage 53. The driver 60 is guided in upward extensions 40 of the sides 33. The gate 46, Fig. 13, is pivoted by a pin 45 in slots 44 in the extensions 40 and is held latched in closed position by a spring 51 secured to a driver-operating lever 61. The lever 61 has hooks 66 to engage, and retain detachably, the driver 60, and is pivoted at 64 to brackets 62 on the arm 31. It also comprises extensions 67 with a cam surface 68, and it is held spaced above the arm 31 by the spring 51. The arm 31 and lever 61 are rocked,. as a unit upwardly about the pivot 37 by a spring 72. The staples are fed by a pusher 78 and elastic cord 80, the pusher having an ear 83 at its forward end adapted to engage the driver when the magazine is empty, and lateral ears at its rearward end to prevent its escape from the magazine when the gate is opened. A stapleretainer 85 pivoted between the extensions 40 is urged by a spring 88 to wedge against, and so retain, the staples in the magazine when the gate is opened, as for reloading. A member adapted to grip and support a workpiece W, Fig. 8, during stapling, consists of a resilient strip 91 which is pivoted at 37 by ears 38, has an upward extension 93 at its rear end, and is bent at its forward end so as normally, under pressure of a spring 95, to lie in the slot 19 of the anvil 17. Two rollers 98 and 100 are mounted in the section 4. In use, a workpiece W is placed between the arm 31 and support 91, and the sections 3 and 4 are pressed together. The roller 98 rocks the support 91 so that its forward end rises to grip the workpiece. The roller 100 then rocks the lever 61 downwardly, causing a staple to be driven through the work, as shown in Fig. 8. The arm 31 and support 91 are then forced together towards the anvil 17, so that the support enters the slot 19 and the staple legs are clinched by the dies 18, a flat clinch being produced.