baber/WOPTO huggingface dataset:
Patent GB-417373-A (GB)
Title: Improvements in and relating to centrifugal separators
IPC: B04B11/02
Filed: 1934-05-18
Abstract: 417,373. Centrifugal machines. AKTIEBOLAGET SEPARATOR, 8, Fleming- gatan, Stockholm. May 18, 1934, No. 15110. Convention date, May 18, 1933. [Class 23.] In a centrifugal bowl 2 on the shaft 3 the separated solids are brought to peripheral discharge openings by means of a conveyer mounted on the spindle 5, and liquid is prevented from reaching the bearing 6 by means of a chamber 9 formed round the conveyer spindle. This chamber is formed between a flanged collar 8 on the spindle 5 and the internal lip 11 on the base of the bowl. A narrow opening 7 between the collar 8 and the base of the bowl connects the chamber 9 to the bowl space while the discharge outlets 10 are sufficiently large to prevent the liquid from reaching the top of the lip 11. In a modification the narrow opening 7 is formed between a flange on the bowl and the spindle 5, and the flanged collar 8 is arranged beneath the opening. In the further modification shown in Fig. 3, the sleeve 17 and the flanged collar 16 are arranged above the ball bearing 15, and a collar 21 projects into the space between them. The narrow opening 18 is formed between the flanged collar 16 and the bowl wall and channels 20 of large cross-section form outlets from the chamber 19.
Patent GB-653920-A (GB)
Title: Apparatus for guiding tapes
IPC: D07B7/14
Filed: 1948-06-04
Abstract: 653,920. Unwinding ; armouring. WESTERN ELECTRIC CO., Inc. June 4, 1948, No. 15118. Convention date, June 6, 1947. [Class 83 (iv)] [Also in Group XVI] In order to keep the tension of steel tape approximately constant in spite of a varying angle of supply when feeding the tape from an elongated reel 15 over a fixed guide pulley 21 and on to a cable, the variation in the angle of supply is lessened by passing the tape over a crowned roller 19 so as to lengthen the path between the reel and guide pulley, the shape of the roller allowing the tape to make substantial line contact therewith and so move freely along the surface thereof. A serving head 55, Fig. 1, carries two reels 15 from which tape 10 passes in an approximately triangular path, over the path-lengthening rollers 19 and over guide pulleys 21 on to a cable 12. The shape of the rollers is shown in Fig. 2, the ends 33 are flared to prevent the tape from sliding off when not under tension and the centre part is flat to facilitate manufacture and reduce wear on the rollers. Each reel is mounted on an arbor provided with a brake controlled by a spring biassed arm 42 carrying a feeler roller 41 bearing on the tape on the reel so that the braking force is lessened as the supply of tape on the reel is reduced.
Patent GB-672765-A (GB)
Title: Improvements in or relating to television transmitting tubes
IPC: H01J29/08
Filed: 1947-06-09
Abstract: 672,765. Cathode-ray tubes. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ. June 9, 1947 [Sept. 5, 1946], No. 15164/47. Class 39 (i). A method of reducing the formation of spurious signals in a television tube of the kind employing a beam of fast moving electrons for scanning a target electrode consists in scanning an auxiliary electrode with the beam of electrons at the termination of the frame traverse for the purpose of liberating secondary electrons, the auxiliary electrode being juxtaposed with that edge of the target electrode which is arranged to be scanned at the termination of the frame traverse so that secondary electrons liberated from the auxiliary electrode are collected by the marginal region of the target adjacent to the auxiliary electrode. The rectangular photo-sensitive mosaic M has a narrow strip secondary electron emitting auxiliary electrode A, B juxtaposed with the edge of the mosaic M which is scanned at the termination of the frame traverse V, the scan being adjusted so that the cathode-ray beam strikes at frame frequency the electrode A, B before being suppressed. The steady potential applied to the electrode A, B is positive with respect to that of the final accelerating anode of the tube and is adjustable for control purposes by manual means. The potential applied to the electrode A, B may be positive with respect to that of the final accelerating anode for only a fraction of the scanning time, a voltage of appropriate wave form being introduced between the electrode A, B and the final accelerating anode. Another secondary emitting strip electrode may be juxtaposed with the side B, C of the mosaic M at the termination of the line traverse H.
Patent GB-517167-A (GB)
Title: Improvements in and relating to methods of regulating the amplitude of electric waves
IPC: H04L27/08
Filed: 1938-05-21
Abstract: 517,167. Automatic volume control. STANDARD TELEPHONES & CABLES, Ltd., and TERRY, V. J. May 21, 1938, No. 15179. [Class 40 (iv)] [Also in Group XL] A circuit for responding to impulses, e.g. successive half-cycles of alternating current, in telegraphy, rejects impulses of an amplitude below a certain value, this value being variable with the rate at which impulse energy is being received and being equal to half the peak value of the incoming signals, and limits the amplitude of the accepted impulses to a value which is the same for positive and negative half-cycles. As shown the first function is performed by a bridge rectifier 3 ...6 having its input terminals in series in the transmission circuit and its output terminals bridged by a circuit comprising a condenser 15 and leak 14. In a modification, Fig. 2 (not shown), a similar rectifier has its input bridged across the transmission circuit and its output connected to a circuit comprising an inductance and resistance in series. The impedance of the bridge and consequently the level below which signals are rejected depends on the charge on condenser 15 (or the current in the inductance). The second function is performed by a full-wave current limiter comprising a battery 18 and a rectifier 12 for one direction. The other direction is looked after by the battery 19 and either the valve 10 which passes the signals on or another rectifier 11. Since the batteries 18, 19 are equal the output is free from even harmonics when the input is sinusoidal and since the level below which signals are rejected is made equal to half the peak value of the alternating input impulses the output is, for large values of signal, free from third harmonic also.
Patent GB-571485-A (GB)
Title: Improvements in or relating to fuel injection apparatus
IPC: F02M45/06
Filed: 1943-09-16
Abstract: 571,485. Fuel-injection pumps. BENDIX AVIATION CORPORATION. Sept. 16, 1943, No. 15232. Convention date, Sept. 16, 1942. [Class 7 (iii)]. [Also in Group XXVIII] In a fuel-injection pump, pilot and main - injections are terminated by two byepassing operations effected independently by separate ports 42, 43 in the cylinder 37 and passages 45, 60 in the plunger 44. The pump is cooled by fuel continuously circulated by means of supply passages 41 and an annular chamber 40 feeding the inlet port 39, and the plunger 44 is angularly adjusted by a gear sleeve 48. The passage 60 is connected to an axial groove 59 which co-operates with a port 58a connected by a passage 58 in communication with the pressure chamber of the pump. The lower edge of the groove 59 and the edges of passage 60 may be helical. In a modification, the passage 60 is in continuous communication with the pressure chamber of the pump by an extension of radial passage 47 communicating with the groove 59, or by an extension of the axial passage 46 communicating with the passage 60. The pump may be constructed as a unit with an injection valve 27 and nozzle 21. As shown, the pressure chamber of the pump is connected by passages 35, 36, 29 to an injector pressure chamber 28 with a conical seat 26b for the tapered lower end of needle valve 27. The latter is normally held in its closed position by a spring 30, spindle 31, and a pin 27a. Fuel leaking past the valve 27 escapes through passage 61 to the chamber 40.
Patent GB-202442-A (GB)
Title: Improvements in and relating to cylindrical cutters of the type employed in boot and shoe manufacture for trimming the edge of lasted uppers
IPC: A43D49/00
Filed: 1922-05-31
Abstract: 202,442. Pochin, F. H., and Pochin, H. S. May 31, 1922. Trimming.-A cylindrical cutter for trimming the edges of lasted uppers has grooves D on the side opposite to the bevel C. Additional grooves F may be formed on the other side. The grooves may be at an angle to the axis of the cutter.
Patent GB-353144-A (GB)
Title: Improvements in or relating to weighing machines
IPC: G01G23/06
Filed: 1930-05-20
Abstract: 353,144. Weighing-apparatus. SCHMIDT, 0. and FUESS, R., (trading as FUESS, VORM. J. G. GREINER JR. & GEISSLER, R.), 8, Duntherstrasse, Steglitz, Berlin. May 20, 1930, No. 15426. [Class 143.] Pendulum-weight apparatus ; vibration, preventing and neutralizing.-In a precision pendulum weighing-machine having a load pan pivotally mounted on a pendulum lever by means of a pan support and maintained in a substantially horizontal position by means of a counterweight adapted to oscillate with the pan in one plane only, the pan support is provided with one or more damping plates disposed parallel to the plane of oscillation of the pan support for engagement by resilient brake members so that the oscillations of the pan and the pendulum lever are damped simultaneously. The pan support f is mounted on a wide knife-edge e on one arm of the pendulum lever d and is loaded with a counterweight i of sufficient magnitude to prevent inconvenient tilting of the pan g by a load placed on the edge thereof. Two parallel damping plates k are secured to the pan support f and may be frictionally engaged by a light spring n when the operator depresses a lever o, thus damping the oscillations of both the pendulum lever d and the pan support f. A weight p returns the lever o after release and the return is rendered gradual by a dashpot q. In a modification, a single damping plate k is provided and two light springs may be caused to engage opposite sides simultaneously to damp the oscillations.
Patent GB-105037-A (GB)
Title: A New or Improved Reversible Steam or other Fluid Pressure Turbine.
Inventor: BOAD GEORGE WILLIAM
IPC: F01D1/30
Filed: 1916-10-30
Abstract: 105,037. Boad, G. W. Oct. 30, 1916. Circular-flow type; reversing.-A reversing-valve e admits motive fluid through one or other of the nozzles f, fl to guide-channels n in the casing d for impact on the rotor pockets c. The fluid exhausts through ports l in the opposite end walls of the casing into annular exhaust chambers. The channels n are formed by segments m projecting from one of the casing end covers.
Patent GB-294343-A (GB)
Title: Improvements in shackles for ropes or chains
IPC: F16G15/06
Filed: 1927-06-10
Abstract: 294,343. Marine & Factory Suppliers, Ltd., and Stevenson, W. June 10, 1927. Shackies.-The shackle pin acts as a strut as well as to close the shackle, preventing the limbs from being pressed together and from spreading apart. For this purpose screwthreads 5, are provided at both ends of the pin to screw into both eyes of the shackle.
Patent GB-515936-A (GB)
Title: Improvements in and relating to a tripod head for mounting cameras and the like
IPC: F16M11/12
Filed: 1938-06-17
Abstract: 515,936. Stand for camera. SHIRTCLIFF, S. June 17, 1938, No. 15454. [Class 52 (iii)] In a tripod head comprising a casing mounted at its lower end to a tripod containing a core the movements of which in two vertical planes at right angles are controlled by adjusting screws, the core is provided with a rotatable cap which may be locked in any desired position. Between seatings 30 and 31 in the core 15 is mounted a ball 32 through which the adjusting screw 13 is threaded. A lug 33 depends from the core 15 and is provided with a vertically elongated slot 34 in which is arranged a pin 35 outstanding from a nut 36 threaded on the other adjusting screw 14. Rotation of either screw 13, 14 affects a rocking movement in a vertical plane about the other screw as fulcrum. The cap 17 is rotatably mounted on a boss 16 in the core 15 and may be locked by a spring fillet 22 attached to the cap and carried in a groove 18 on the boss 16 by pressing the fillet against this boss by a sliding rod 24. Specification 435,318, [Group XX], is referred to.
Patent GB-315525-A (GB)
Title: Improvements in and connected with pipe couplings
IPC: F16L19/06
Filed: 1928-05-26
Abstract: 315,525. Simpson, W. May 26, 1928. Stuffing-box joints.-A pipe E is jointed to a coupling member B by means of a ring C of white-metal, lead, &c. which is positioned within a recess A in the coupling member to surround the pipe and is adapted to grip same when compressed by a wedge-shaped washer D provided within a securing nut G. The coupling member may be formed internally with a pipe-positioning ledge H.
Patent GB-1293005-A (GB)
Title: Registration mechanisms
IPC: B41B7/04
Filed: 1970-04-01
Abstract: 1293005 Typewriters; embossing machines &c ADDRESSOGRAPH MULTIGRAPH CORP 1 April 1970 [21 April 1969] 15523/70 Heading B6F An aligning device for character embossing discs comprises a toothed member 32a, 32b notched in accordance with characters on the embossing discs which is engaged by a double pawl rocker. One pawl 54a, is the alignment pawl, but if it is directly in line with the tip 32a entry into a space may be prevented. The second pawl 64 acts as a sensing pawl in such cases and gives sufficient movement to the notched disc so that continued movement of the rocker will easily effect alignment by the alignment pawl 54a.
Patent GB-199583-A (GB)
Title: Improvements relating to hovers or brooders employed in the rearing of chicks
IPC: A01K31/19
Filed: 1922-06-02
Abstract: 199,583. Ashworth, E., and Ashworth, E. June 2, 1922. Rearing-appliances.- A brooder or hover, such as that described in Specification 187,440, is provided with hinged or pivoted members upon the cover or upper structure which take into staples or locking devices on the base to maintain the cover in a raised position, in order to allow the chicks to pass in and out or lowered to confine the chicks. The sloping sides b and roof a enclose the chick - compartment which has a double floor c. Supports e inserted in sockets k maintain the upper structure in its raised position but are hinged at h so that they can be folded when the cover is to be lowered. In modified forms the supports e can be jointed to bend laterally and used with sockets open at one side. The hinged supports may be attached to the base and the sockets to the upper part of the structure. According to the Provisional Specification a rim attached to the edge of the sides b and surrounding the floor c may be formed with bayonet joints engaging pins on the side of the floor c, or the upper structure may be permanently fixed in the raised position.
Patent GB-349765-A (GB)
Title: Twist-grip controls for cycle handlebars and the like
IPC: B62M25/04
Filed: 1930-05-21
Abstract: 349,765. Bowden mechanism. ROBINSON, F. J., 11, Warwick Row, Coventry. May 21, 1930, Nos. 15612 and 32614. [Class 80 (iii).] In a twist-grip control for cycle &c. handle-bars, the flexible transmission member passes through a guide on the handle-bar and is secured to the interior of the rotatable sleeve or grip, so that when the grip is actuated, the transmission member is wound in a single helix about the handle-bar, and thus drawn through the guide. In the form shown in Fig. 1, the rotatable sleeve or grip 2 is spaced around the handle-bar 3 and secured to a control cable 4 passing through a guide or eye 5 on a collar 14 supporting the inner end of the sleeve at 15, so that when the grip 2 is rotated in either direction, the cable 4 is wound helically around the handlebar 3 as shown. The outer end of the grip 2 is inwardly flanged at 6 and retained by a flanged split sleeve 8 adapted to be sprung &c. within the open end of the handle-bar. The cable 4 is attached to the grip 2 by means of a tubular nipple 9 fitting within a ferrule 10, which engages a recess in the grip and is longitudinally slotted at 11 to facilitate detachment of the cable. The guide 5 consists of an apertured peg, which may retain the collar 14 on the handle-bar and may form an abutment for the casing 16 of a Bowden transmission. In order to reduce friction, the cable 4 may be wound on a loose tube 50, instead of directly on the handle-bar. In another form, Fig. 2, the grip 17 has a longitudinal bore 18 to receive a longitudinally-slotted screwed ferrule 22 for the nipple 9 of the cable 4, the end portion of which is thus held away from the handle-bar to reduce friction, a helically-disposed guide 20 leading the cable around the handle-bar during winding. Two divergent guides 20 may allow operation of the grip in either direction. The ferrule 22 may be turned, for adjustment and removal, by means of a key engaging its longitudinal slot. The guide peg 28 may pivot in a hole 29 in the handle-bar. In a further modification, the longitudinal bore 18 and guides 20 are formed on the exterior of a rotatable liner, which is secured inside the grip and is provided with an extension of reduced diameter, on which the cable is wound. The rotatable grip may actuate two cables arranged diametrically opposite to one another.
Patent GB-855169-A (GB)
Title: Preparation of new antibiotics designated demethyltetracyclines
Filed: 1957-05-17
Abstract: Demethyltetracycline, chlorodemethyl-tetracycline and/or bromodemethyltetracycline are produced by aerobically fermenting an aqueous nutrient medium containing an assimilable source of carbon, nitrogen and mineral substances and having a controlled chloride and bromide ion content with a demethyltetracycline-producing strain of streptomyces aureofaciens.  Demethyltetracycline is produced in a substantially chloride-free and bromide-free medium. Chlorodemethyl-tetracycline is the predominant antibiotic in a medium containing at least 50 parts per million of chloride ions and less than 50 parts per million of bromide ions. Bromodemethyltetracycline is the predominant antibiotic in a medium containing at least 50 parts per million of bromide ions and less than 50 p.p.m. of chloride ions.  The micro-organisms are mutants of streptomyces aureofaciens NRRL 2209, the examples given are ATCC 12551-2-3 and -4.  The antibiotics are precipitated as alkaline earth metal salts by adding alkaline earth metal ions to the medium and adjusting to pH 6 to 10. Specified are the calcium, barium, magnesium and strontium salts. Salts may be produced with hydrochloric, sulphuric, phosphoric, acetic, boric and other inorganic and organic acids.  Complexes may be produced with boron, zirconium and other polyvalent metals.  The demethyltetracyclines are converted to their isomeric forms by adjusting the hydrogen ion concentration of a solution to pH 3,0 to 5,0 and allowing to stand until the isomerization has reached equilibrium.  Alternatively, demethyltetracycline is produced by dehalogenating chloro- or bromodemethyltetracycline by catalytic hydrogenation preferably using palladium on charcoal as the catalyst.
Patent GB-356108-A (GB)
Title: Improvements in or relating to electric order telegraphs
IPC: G08B9/00
Filed: 1930-05-22
Abstract: 356,108. Electric signalling systems. WARREN, T. R., Beechwood, Gaskell Road, Altrincham, ROSS, T. W., 10, Broadoaks Road, Sale, both in Cheshire, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Bush House, Aldwych, London. May 22, 1930, No. 15791. [Class 40 (i).] In an electric order telegraph, a motor at the receiver drives a contact arm into a position determined by the transmitter to short-circuit the motor armature and thereby bring the motor to rest. In this manner a receiver pointer is positioned in accordance with the movements of the trans. mitter. As shown, the transmitter comprises a rotatable drum having segments 2, 3 connected respectively to the supply leads and an insulated segment 1 connected through a resistance 18 to one terminal of the receiver motor armature 11. The drum co-operates with brushes 6 connected to corresponding terminals 7 of a controller 8 the contact arm 9 of which is driven by the motor. Normally the arm 9 engages a contact corresponding to the brush which at the transmitter is in engagement with the segment 1. Upon operation of the transmitter, the armature circuit is completed over arm 9 and the motor is operated to drive the arm until the normal relationship between the arm and the transmitter segment 1 is established. When this occurs the armature is disconnected from the supply and is short-circuited over the resistance 18 and the motor is brought to rest. Means for acknowledging the receipt of an order comprise a manually operated pointer 19 connected to alarms 21, 22 at the receiver and transmitter respectively. The alarms are operated until agreement between the pointers 9, 19 is established.
Patent GB-1037235-A (GB)
Title: Flame detector
IPC: F23N5/08
Filed: 1964-04-16
Abstract: 1,037,235. Mounting and cooling discharge tubes. COMBUSTION ENGINEERING Inc. April 16, 1964 [April 22, 1963], No. 15901/64. Heading H1D. [Also in Division G1] A flame detector tube mounted longitudinally in a tubular casing welded to one side of the nozzle tip of a furnace burner is cooled by air bled from the normal air supply to the furnace. If, under furnace low-load conditions, the air supply differential drops below a prescribed minimum, a booster fan is switched in. Should the booster fan fail, a differential pressure switch operates a valve to supply cooling air temporarily directly from the high pressure air lines. The tube 76 comprising electrodes 78 in an envelope 80 is supported by a base 82 in a tubular member 40 having a bushing 44 at one end. A spring 90 bearing on a washer 86 urges the base 82, a washer 88, a corrugated sleeve 74 acting as a heat sink, a wire 72 bent into a triangle, and a quartz window 66 against pins 70 secured in the member 40. Air from a flexible conduit secured to the bushing 44 passes through a central passage 96 in the base 82, around the tube 76 and window 66 and is formed by a washer 98 into a cylindrical annulus having sufficient energy to deflect particles in the furnace from the window 66. The washer 98 may be replaced by a collimating tube 102, Fig. 4 (not shown). The tubular member 40 is telescoped within ribs of a tubular casing 16, Fig. 1 (not shown), welded to a nozzle tip 12. Leads from the base 82 pass through the bushing 44 and are connected to the circuit described in Specification 1,037,234 which states that the tube is a glow discharge tube operating on Townsend avalanche.