baber/WOPTO huggingface dataset:
Patent GB-347043-A (GB)
Title: Improvements in or relating to the blades of radial rotors of centrifugal blowers and compressors
IPC: F04D29/28
Filed: 1930-06-02
Abstract: 347,043. Centrifugal compressers. RATEAU, L. A. J., NOBLEMAIRE, M. A. G. MARGOT-, and RATEAU, A. J. A., 10 bis, Avenue ElisÚe Reclus, Paris. June 2, 1930, No. 17073. Convention date, June 7, 1929. [Class 110 (i).] Means for preventing vibration of the blades of centrifugal blowers comprise a star-shaped disc to which the blades are secured at points remote from the hub. In the construction shown in the Figure the blades a are secured to the disc d by tongues which engage slots e and the disc is keyed to the hub b. Alternatively the blades, disc and hub may be formed in one piece. The arms i of the disc may extend to the extremity of the blades.
Patent GB-515835-A (GB)
Title: Improvements relating to baling and other presses
IPC: B30B9/30
Filed: 1938-06-09
Abstract: 515,835. Baling presses. MILLS & SON, Ltd., E. and BLEASDALE, F. June 9. 1938, No. 17122. [Class 94 (i)] In a baling or other press, the press K, K<1> is arranged diagonally between angle iron supports B, which carry supports C for the pressing plate actuating apparatus. One short side K and one long side K<1> is hinged at k to the supports B, and are adapted to be fastened, when in the closed position, by devices such as are described in Specification 515,836, [Group XXV]. The pressing-plate F is diagonally mounted to conform with the box, and is provided with projections f passing between the supports B to prevent rotation. A screw E, fixed to the plate. passes through a tapped bush in a wheel G rotated by a motor g<3>. A switch g<5> provides for automatic starting or stopping. A part of one of the sides K<1> may be hinged to allow access for filling, In a modification, the sides K, K<1> may be formed as one, each part being hinged to one upright and being adapted to be clamped to the other. In this form, the plates F, H have their corners removed to form flat edges which conform to the uprights.
Patent GB-477042-A (GB)
Title: Guiding device for webs of materials such as printed webs in rotary printing machines
IPC: B41F22/00
Filed: 1936-06-19
Abstract: 477,042. Feeding webs; printing- machines. VOMAG-BETRIEBS-AKT.-GES. June 19, 1936, No. 17136. Convention date, June 20, 1935. [Classes 100 (i) and 100 (ii)] A fixed hollow web guiding bar, e.g. a web turning bar for a printing-machine, to which a gaseous pressure medium is supplied, is provided with discharge orifices for the pressure medium in the form of slots extending in the direction of travel of the web and opening into recesses in the surface of the bar so that the web is held in a floating condition as it passes round the bar. A hollow cylindrical bar 1, Figs. 1 and 2, secured to the machine frame by brackets 8, is provided with rows of slots 2 opening into recesses 3, the slots and recesses extending in the direction of travel of the web 4. The recesses merge into the surface of the bar at the ends toward which the web approaches and have substantially radial ends 12 at the other ends. The slots 2 are shaped so that the air &c. under pressure emerges in a substantially tangential direction and a spin may be imparted to the air by providing one or more helical guides within the bar. The margins of the web may be guided by fillets 6 and, when a narrow web is being guided, those slots 2 not covered by the web may be closed by an internal or external sleeve. A loiigitudinal strip may also be secured to the bar where the web leaves the bar. When used for guiding freshly printed webs, the pressure fluid may be heated to dry the ink and the drying may be assisted by the provision of a suction device 9.
Patent GB-1087378-A (GB)
Title: Control device for a remote display system
IPC: G09F11/06
Filed: 1966-04-19
Abstract: 1,087,378. Electric synchronizing. SOLARI & C. UDINE S.p.A. April 19, 1966 [April 23, 1965], No. 17146/66. Heading H2L. A number of indicators for relaying information at a railway station are controlled from a remote position to move in synchronism, each indicator being driven by a step-by-step motor 20 which is advanced sequentially by receiving pulses of opposite sign, the several motors being connected in parallel. If one of the motors falls out of step, the arrival of the next pulse of opposite sign is prevented so that the motors are halted and receive a series of pulses of the same sign, in an attempt to bring the faulty motor into step. If this attempt fails, a time delay circuit actuates an alarm. A multi-vibrator 22 emits a short pulse to actuate relay CS and energize self-holding relay P, after which the unit 22 provides a long pulse to actuate relay I 1 . The motors 20 are energized thereby to make a first step and to change-over contacts 21. At the end of the driving pulse, the unit 22 emits a short pulse to re-actuate relay CS and to complete a circuit for relay D. The next driving pulse energizes relay I 2  whereby the motors 20 each receive a pulse of opposite polarity to the previous pulse and make another step forward, the contacts 21 being restored to the former position. If one of the motors falls out of step, the associated contact 21 remains in its previous position so that the motors now receive a driving pulse of the same polarity as the previous pulse and are stopped, the faulty motor being urged to synchronize with the other motors. If the fault persists, either relay P or D remains energized beyond a predetermined time limit to provide an alarm signal, and to open contacts al 3 , al 4 . The device is started by moving a switch at the central control station to a selected one of a series of contacts, a circuit being completed through a conducting surface of a disc mounted on each of the indicators to energize relay T 1  which closes contacts t 11 , t 12 . This relay is de-energized when a contact associated with the disc reaches an insulated sector. The contacts 21 may take the form of a disc having a printed conductor on its surface. The unit 22 may comprise two transistors forming a bi-stable multivibrator and an amplification stage consisting of a further transistor for energizing a relay which in turn controls a time delay relay. Contacts of the relays form a network connected to the terminals E, F, G which receive short or long pulses of the same sign. The timer for signalling an alarm comprising a capacitor which is discharged to render a transistor conductive for energizing a relay.
Patent GB-223181-A (GB)
Title: Improvements in or relating to methods of and means for neutralising capacity coupling between thermionic valve circuits
IPC: H03F1/16
Filed: 1923-04-05
Abstract: 223,181. Jackson, W. J. Mellersh-, (Independent Radio Manufacturers, Inc.). April 5, 1923. Thermionic amplifiers and generators; receiving sets, construction of.-Relates to particular applications of the general methods described in Specification 222,894 for neutralizing the inherent capacity coupling between the grid and plate circuits of a thermionic valve. As shown in Fig. 1, the interelectrode capacity, represented by C<1>, is neutralized by a balancing condenser C<2> inserted in series with a coil L<2> between the filament and grid. Although the coil L<2> is shown as connected to one end to the positive H T terminal, this is approximately at the same alternating current potential as the filament for the purposes of the invention. The coil L<2> has a coefficient of coupling substantially equal to unity with a coil L<1> in the plate circuit, the common terminals of the windings being so arranged as to have opposite polarities. The ratio of the number of turns in L<2> to those in L<1> is the ratio of the capacity value of C<1> to C<2>. As applied to a multivalve set, Fig. 3, the coil L<2> serves both as the secondary winding of an intervalve transformer 4, and as a balancing coil in series with the balancing condenser C<2> which connects the grids of two successive valves. Each unit or stage of the set is enclosed in a separate compartment screened by conducting walls 8 .. 11, the various leads being further screened by tubes such as 16. Fig. 4 shows the neutralizing system applied to a power amplifier 18 separately excited from an input coil 25. As in Fig. 1 the auxiliary coil L<2> is tightly coupled to the plate coil L<1>, and is in series with the balancing condenser C<2> between the grid and filament.
Patent GB-821280-A (GB)
Title: New reserpine derivatives and the manufacture thereof
IPC: C07D459/00
Filed: 1957-05-30
Abstract: The invention comprises esters of a di-lower alkyl-4-lower alkoxy-benzoic acid with a lower alkyl reserpate, raujemidate, deserpidate or raunescate, e.g. compounds of the formula <FORM:0821280/IV (a)/1> the expression "lower alkyl" meaning alkyl radicals of from one to six carbon atoms, inclusive, and also processes for the preparation of di-(lower alkyl) 4-lower alkoxybenzoates of lower alkyl reserpates, raujemidates, deserpidates and raunescates by (a) esterifying the lower alkyl reserpate or its analogue with a di-(lower alkyl) 4-lower alkoxy benzoic acid acylating agent, preferably an acid halide, or (b) catalytic hydrogenation of the corresponding di-(lower alkyl) 4-lower alkenyloxy benzoic acid ester.  The esters may be converted to their acid addition salts, e.g. sulphate, hydrohalide, phosphate, acetate, propionate, benzoate citrate, maleate, succinate, salicylate, phenylacetate, a - and b -phenylpropionates, and b -cyclopentyl-propionate.  In examples: (1) a di-(lower alkyl)-4-lower alkoxybenzoyl chloride is added to a stirred solution of methyl reserpate in pyridine, the mixture extracted with chloroform yielding a methyl reserpate O-di(lower alkyl)-4-lower alkoxybenzoate; (2)-(4) and (6)-(10) thus methyl reserpate O-(2,6-dimethyl-4-propoxy benzoate), O - (2,6 - dimethyl - 4 - methoxybenzoate), O - (2 - methyl - 6 - ethyl - 4 - propoxybenzoate), O - (2 - methyl - 3 - ethyl - 4 - propoxybenzoate), O - (2 - methyl - 5 - isopro - pyl - 4 - ethoxybenzoate), O - (2 - methyl - 5 - isopropyl - 4 - ethoxybenzoate) and similarly methyl deserpidate O-(2,6-dimethyl-4-propoxybenzoate), methyl raunescate O-(2,6-dimethyl-4-propoxybenzoate), and methyl raujemidate O - (2,6 - dimethyl - 4 - propoxybenzoate) are prepared; (5) methyl reserpate O(3,5-dipropyl-4-allyloxybenzoate) is hydrogenated over palladium charcoal, giving methyl reserpate O-(3,5-dipropyl - 4 - propoxybenzoate); many other esters are listed.
Patent GB-1223745-A (GB)
Title: Device for metering and dispensing plastic materials
Inventor: HAYASHI TORAHIKO
IPC: A23P10/00
Filed: 1968-04-10
Abstract: 1,223,745. Dispensing measured quantities. T. HAYASHI. 10 April, 1968 [10 April, 1967], No. 17214/68. Heading B8N. [Also in Division F1] A device for metering measured quantities of a plastic material, e.g. cream and jam, comprises a chamber 8, means for supplying the material to the chamber, two parallel shafts 2 in the chamber one on each side of a discharge opening 12 and each provided with a pair of radially extending vanes 4 inserted into slots 3 in the shafts so that the vanes can slide radially along the slots by engagement of the vane extremities with an internal contoured wall 9 of the chamber, and a swinging cam 13 which in use comes into contact with the vanes and causes each vane to recede as far as the circumference of its respective shaft just before said vane reaches the discharge opening. As illustrated, material is introduced via an opening 7 and is carried by a pair of screws 1 to the chamber 8 via openings 10. The shafts 2 are attached to the screws.
Patent GB-826561-A (GB)
Title: Improvements in or relating to polymerization process
IPC: C08F2/00
Filed: 1956-06-04
Abstract: Ethylene is polymerized by a process characterized by continuously (including incrementally) and simultaneously adding ethylene, Ziegler-type catalyst and solvent to a reaction zone and continuously withdrawing polymer slurry.  Optionally the catalyst may be formed in situ from the components and, if desired, liquid residue remaining after separation of polymer may be recycled. The polyethylenes obtained are of restricted molecular weight distribution, as may be determined by fractionation using toluene/butanol.  Specifications 815,161 and 826,563 are referred to.
Patent GB-754361-A (GB)
Title: Improvements in stators for dynamo-electric machines
Inventor: DOLENC ANTON
IPC: H02K1/18
Filed: 1954-06-11
Abstract: 754,361. Core constructions for dynamoelectric machines. RADE KONCAR TVORNICA ELEKTRICNIH STROJEVA. June 11, 1954, No. 17271/54. Class 35. A stator core comprises a number of packets of laminations angularly staggered, the corners of the laminations having salient portions with teeth and/or perforations, a casing being cast or moulded in situ about parts of the laminations. Fig. 5 shows an assembly of angularly staggered laminations in stack 14 between end pressure rings 18 and then an aluminium jacket 31 is centrifugally cast in such manner that the lamination crests 15, as well as, teeth 21 of the rings 18 become embedded in the casting. The latter may be reinforced by cylindrical steel members 33. A conical cylinder 27 surrounds the casting and finally a removable jacket is provided over the cylinder 27. Instead of aluminium, spelter or cement may be used. Specification 754,430 is referred to.
Patent GB-971813-A (GB)
Title: Improvements in direct-current amplifiers
IPC: H03F1/34
Filed: 1962-05-07
Abstract: 971,813. Amplifying circuits. GENERAL ELECTRIC CO. May 7, 1962 [May 12, 1961],' No. 17388/62. Heading H3W. The invention relates to a directcurrent amplifying arrangement comprising a pre-amplifier 5 of the type in which the signal is modulated on a carrier frequency which is then A.C. amplified and demodulated. This is followed by a direct-coupled operational amplifier 6 and negative feedback is applied around the whole arrangement by means of a resistive network. To prevent transmission of the carrier frequency used in pre-amplifier 5 round the feedback loop, the loop gain at higher frequencies is reduced by means of internal negative feedback from output to input of the operational amplifier 6 via a capacitor. The main feedback network can be switched to vary the gain of the arrangement and takes the form of a potentiometer comprising resistors R1, R6 and adjustable resistor R7; the gain is varied by shunting resistors R2-R5 either individually or in conjunction across resistor R1 or resistor R6 by means of relays K1-K4. Zero offset may be effected by means of a source B which is connected into the network over high-value resistors R10, R12 or R14 by means of relays K5-K7, the back-contacts of which bring into circuit compensating resistors R11, R13 and R15. In order to allow the output terminal 4 to be grounded while input terminal 2 is floating, the feedback network is arranged to charge up a capacitor C6 which is alternately discharged by vibrating switch K11 into a further capacitor C7; this introduces negative feedback in series with the input circuit, over resistive potentiometer R8, R9. In such an arrangement the use of a single capacitor shunting the operational amplifier would mean that the loop gain at the carrier frequency of the pre-amplifier 5 would vary as the overall gain is switched and might become high enough to cause instability. According to the invention, this is prevented by also switching the feedback capacitor, each of the relays K1-K4 including additional contacts K1b- K4b which bring into circuit, either individually or in conjunction, capacitors C2-C5, which provide negative feedback across operational amplifier 6 at the higher frequencies.
Patent GB-545331-A (GB)
Title: Improvements in oil filters
IPC: B01D29/00
Filed: 1940-12-10
Abstract: 545,331. Filters. GENERAL MOTORS CORPORATION. Dec. 10, 1940, No. 17485. Convention date, Jan. 12. [Class 46] The filtering element of an oil filter comprises cylindrical screens 26, 28, spaced by a corrugated member 30. The element at the lower end engages a groove 36 formed in a ribbed plate 38, so that the space between the screen is closed below. Ribbed plates 42, 48 close the upper ends of the screens 26, 28 respectively. The plate 48 has a neck portion 54 which engages in a chamber 22 formed in a cap 6 which closes the casing 4. The cap has inlet and outlet passages 16, 18 for the oil, part of which enters the space within the screen 26 through apertures 40 in the plate 38. The oil filters through the screens to the space between them and passes between the plates 42, 48 to the chamber 22 and outlet 18. A spacer 62 with a neck entering the neck 54 may be arranged between the plates 42, 48. The cap and casing are held together by a bolt 72 which screws into a socket 80 on the cap and is threaded at the lower end to receive a stud 68 which projects through the bottom of the casing. A spring. 78 causes the element to seat against the cap. Modified apparatus is described in which a grooved ring is used instead of the plate 38 to close the lower end of the space between the screens and the bolt 72 is bored at the upper end to receive a short headed bolt which projects inwardly through the cap. the spring bearing against the plate 42. The filter may be provided with a bypass fitted with s spring-pressed ball check valve adapted to open in the event of the filter becoming clogged.
Patent GB-1170633-A (GB)
Title: Drive for the Rollers of Roller Type Straightening Machines
Inventor: BLUMENTHAL HELMUTH
IPC: B21D1/02
Filed: 1967-04-17
Abstract: 1,170,633. Straightening. WISSENSCHAFTLICH - TECHNISCHES - ZENTRUM AUSRUSTUNGEN FUR DIE SCHWERINDUSTRIE UND GETRIEBEBAU VEB. 17 April, 1967, No. 17537/67. Heading B3E. A drive for the rollers of a roller straightening machine includes motors 2 for driving rollers 1 with a constant torque, irrespective of their speed, and a motor 6 for driving a roller 3 at constant speed irrespective of the load on rollers 1. The tensile load on the material being straightened is thereby kept constant.
Patent GB-119851-A (GB)
Title: Improvements in and connected with Inlet Valves for Internal-combustion and other Engines.
IPC: F01L7/00
Filed: 1917-11-28
Abstract: 119,851. Chinese-American Co., (Assignees of Whaley, W. B. S.). Dec. 21, 1916. [Convention date]. Valves. - A mechanically-actuated admission valve of the piston type for internal-combustion or other engines is combined with an automatic lift valve which opens only when the pressure of the entering gas exceeds that in the engine cylinder. The device is particularly applicable to engines working on the retarded combustion system as described in Specifications 112,430, 112,930 and 113,432 for admitting compressed air for completing the combustion of the fuel, stratifying, or scavenging. The piston 24, operated by an eccentric or other means, moves in a ported sleeve 21 and controls the supply of air &c. passing from a pipe 32 to a chamber 20, from which the air enters the engine cylinder 12 past a spring-pressed poppet valve 38 mounted in a removable sleeve 33. The piston 24 has a perforated web 25 to prevent compression in the valve casing. The Specification as open to inspection under Sect. 91 (3) (a) describes also washers 43 for adjusting the position of the sleeve 21. This subject-matter does not appear in the Specification as accepted.
Patent GB-373803-A (GB)
Title: Improvements relating to the treatment of the nasal cavities
IPC: A61N1/02
Filed: 1931-06-17
Abstract: 373,803. Electrotherapeutic apparatus. HAMBLIN, Ltd., T. and WINGATE, G. H., 15, Wigmore Street, Cavendish Square, London. June 17, 1931, No. 17603. [Class 81 (ii).] An apparatus for treatment of the nasal cavities with an electric current, particularly for nasal ionization, comprises a head attachment, such as a strap, adjustably carrying an electrode or electrodes. As shown in the Figure, the strap 10 is provided with a leather pad 6, on which are mounted hooked electrodes 1 held in position by set screws 5 and capable of vertical and angular adjustment for insertion in the nostrils. A metal connection 9 between the electrodes is provided. The electrodes are partly covered by rubber tubing 2, and contact at the extremities with absorbent material saturated with zinc or other salt solution. The negative electrode for attachment to the knee or other part of the body consists of a zinc or other metal plate in a bag provided with a hand loop 16 and formed with a waterproof bottom 14 and a flannel top 15 moistened with an electrolyte. The strap 10 may be replaced by a cap or a frame, provided if desired with ear pieces.
Patent GB-517514-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J31/50
Filed: 1938-06-14
Abstract: 517,514. Image intensifiers. BAIRD TELEVISION, Ltd., and CHAPTER. C. F. June 14, 1938, No. 17612. [Class 39 (i)] The image to be intensified is projected on to a photoelectric screen and the electron image thus formed focused on to a fluorescent screen which also emits secondary electrons with an emission ratio of slightly less than unity ; the secondary beam is re-focused on to the fluorescent screen without reaching the photo-electric screen. For this purpose a grid 4 is arranged near to the photo-electric screen 2 and maintained at a considerable positive potential with respect to it by means of a battery 6. The fluorescent screen 5 is formed with a conductor backing and connected with the grid 4 by a source 7 of alternating potential. The period of the source 7 is such that secondary electrons emitted by the screen 5 can be attracted to the grid 4 and, after they pass through it and their motion has been reversed by the potential on the screen 2 they are attracted to the screen 5 by the reversed potential of the source 7. A focusing coil 8 secures the return of the electrons to the appropriate points of the screen 5.
Patent GB-268279-A (GB)
IPC: B64C39/02
Filed: 1926-07-14
Abstract: 268,279. Lutsch, A. March 25, 1926, [Convention date]. Void [Published under Sect. 91 of the Acts]. Screw and like propellers.- Each propeller 2, 3 of a flying apparatus for attachment to a person's back consists of a blade having a single or, as shown, a double helical surface diverging from the axis as the upper end of the blade is approached. The end of the blade may be wedge-shaped.
Patent GB-176654-A (GB)
Abstract: 176,654. Riedel, F., and Floth, B. Feb. 24, 1921. Kitchen dressers. - A board b with apertures for washing-up pans e is mounted on strips c beneath the drawer a of a cupboard or kitchen dresser, and when drawn out is supported on the open doors f of the cupboard &c. by strips g, to which it may be detachably connected by hooks and eyes &c. The board is prevented from being entirely withdrawn by projections which come up against the rear edges of the doors f when open. The strips c, g may be fitted with rollers.
Patent GB-884712-A (GB)
Title: New derivatives of the antibiotic lagosin
Inventor: FLETCHER DEREK LAWRENCE
Filed: 1959-05-22
Abstract: Relates to complex compounds of lagosin (see Specification 884,711) with halides of metals of Group IIa of the Periodic Table, particularly the chlorides, bromides and iodides of magnesium, calcium, strontium and barium.  The compounds may be prepared by mixing the metallic halide with lagosin in an organic solvent such as methanol, ethanol or propanol and then separating by means of an organic liquid which is a non-solvent for the complex, such as isopropyl ether.  The lagosin may be recovered from the complexes by treatment with water.