baber/WOPTO huggingface dataset:
Patent GB-600254-A (GB)
Title: Improvements in or relating to multiplex electric pulse communication systems
IPC: H04J3/00
Filed: 1944-10-18
Abstract: 600,254. Impedance networks. STANDARD TELEPHONES & CABLES, Ltd. Oct. 18, 1944, No. 20197. Convention date, Oct. 19, 1943. [Class 40 (viii)] [Also in Group XL (c)] In a multiplex signalling system, for the transmission of speech over a common medium such as a coaxial cable, a train of pulses is produced for each channel, the pulses being paired off so that when unmodulated there is a time interval between the pulses of each pair different from the time interval between the succeeding pairs of the same channel, and the pulses in the various channels are intercalated in time forming groups of pulses with a given mo itoring time interval between the groups. Modulation is effected by a push-pull time displacement of the pulse pairs. In its simplest form, the system comprises an east and west terminal, Fig. 1, including terminal sta ions 1, 2 ... n, and an operator's supervisory unit 26 which comprises a ma ter frequency source 27 and monitoring visual indicator 28. Each terminal station has a substation 31 of known type for switching telephone lines, a modulator 33, a demodulator 34, a hybrid connection 32 between the substation, the modulator and the demodulator and two control circuits 35, 36 from the unit 26. The circuit 35 from the master source 27 includes a phase-shifter 37 to control the timing of the channel pulses generated in modulator 33 and the control circuit 36 includes phaseshifter 38 and timer circuit 39 to generate gate pulses to control demodulator. 34. The phaseshifters PH or PH of Fig. 1 are introduced at various points of the system to produce the correct phase for the timing wave at these points. The simple type PH for introducing small range adjustments may consist of a transformer shunted by a variable resistance and variable condenser in series, the output being taken across the resistance, Fig. 9 (not shown). The type PH, Fig. 10, consists of a number of sections 370 fed in parallel through a common phase-shifting variable inductance 282 and with their outputs brought out to a selector switch 276. Each section 370 includes a transformer across which two arms 265, 266, each containing a variable condenser and variable resistance, are connected, the output being taken between the intermediate points. The sections are adjusted to give the correct phase, one for each channel timing wave. The master oscillator, 27, Fig. 1, is applied to phaseshifter (PH) 278 which feeds buffer amplifier 280 and line 35 leading to individual phaseshifters PH, e.g. 37 for west terminal station No. 1, for the modulator circuits. A further phase-shifter (PH) 279 and buffer amplifier 281 feed individual phase-shifters, PH, e.g. 38 for the demodulators.
Patent GB-427304-A (GB)
Title: Automatic coin-freed release for billiards or other games
IPC: G07F17/38
Filed: 1933-07-18
Abstract: 427,304. Coin-freed game apparatus. FLORSHEIMER, S., (trading as ETERNA BILLARD-GES. FLORSHEIMER & CO.), 11, Ritterstrasse, Berlin. July 18, 1933, No. 20217. Void [Abridged as open to inspection under Sect. 91 of the Acts, June 20, 1934]. [Class 27] Hiring billiard and like tables.-In a coinfreed device for allowing play on a billiard or like table for a predetermined time controlled by a clockwork, and as shown applied to a " Russian billiards " table, a control disc 12, Figs. 1 and 3, on a shaft 13 is rotated in the direction of an arrow 27, after the insertion of a coin, by an outside handle 15 until a nose 43 on the disc engages one end 17<1> of a locking-pawl 17, 18. The handle is then released and the shaft 13 with disc 12 is returned to initial position with a lug 25 on the disc engaging the rear side of the pawl end 17<1> as shown in Fig. 3, by a spring 16. In this return movement, the front abrupt edge 45 of a bevelled lug 44 on the rear face of the disc 12 engages the bent end 7<1> of a rotatable and slidable pin 7 to depress this pin, which engages the rearwardly extending end 6 of a lever carrying a blocking device which engages in the return track of the billiard balls in known manner. The depression of the pin 7 raises the blocking device to release the balls for play. The first rotation of the disc 12 rotates a pinion 28 gearing with clockwork 32, the pinion being carried by a sleeve 29 which has a tooth 30 projecting into a semi-circular slot 31 in the disc. The pinion 28 winds up the clockwork which, after the disc 12 has returned to its initial position, rotates the pinion 28 back to cause the tooth 30 to return along the slot 31. When the tooth reaches its initial position it meets and rotates the pin 7 to free this from the disc 12. The pin 7 accordingly returns to its upper position and further play on the table is obstructed. The speed of the clockwork may be adjusted by a nut 33. Coin action, with stationary coin forming abutment.-A coin inserted through a slot 24 travels along a coin testing shoot and drops to a coin receiver 21 and on to the end 52 of the locking-pawl 17, 18 which projects through a slot into the coin receiver. The coin prevents the pawl from being moved by a spring 20 into engagement with a notch 26 on the disc 12. Coin - discharging mechanism.-A cam 42 on the periphery of the disc 12 tilts the lever 17, 18 further to discharge the coil at the end of the first rotation of the disc. Registering.-A pin 34 on the pinion 28 actuates a counter 36 at each forward rotation of the disc 12. Clearing - apparatus ; returning coin.- The shaft 13 of the disc 12 carries a notched disc 37 which rocks a bell-crank lever 38, 39 to open a hinged slide 23<1> of the coin-testing shoot. This allows any coins stopped in the shoot to drop out to a return shoot, and also any coins inserted before the first is discharged. Fraud, preventing.-A pawl 47 coacting with notches 51 ensures a full stroke of the disc 12.
Patent GB-516749-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03C1/22
Filed: 1938-07-08
Abstract: 516,749. Valve modulating circuits. SCOPHONY, Ltd., and DODINGTON, S. H. M. July 8, 1938, No. 20277. Class 40 (v)] The effects of variations in the grid impedance of a gridmodulated amplifier are overcome by feeding the carrier to the grid from a tapping on a potentiometer connected across the carrier source. The potential divider 12, 13 is in parallel with, and resonates with a coil 14 which is connected to the carrier-source over condenser 15. The grid' of the modulated amplifier 9 is connected to the junction of condensers 12, 13 and also to the output of the " cathode follower " valve 3 which amplifies the modulating signals. A choke 16 between the cathode of valve 3 and the load impedance 17 prevents carrier-frequency from reaching the modulation-frequency circuits. In conjunction with condenser 13 it may also be arranged to give a " boost " to the higher modulating-frequencies. Resistances may be used in the potential divider, and the " cathode follower " valve may be replaced by any suitable modulation-frequency amplifier.
Patent GB-572275-A (GB)
Title: Improvements in or relating to the manufacture of rubber bonded articles
IPC: B29C35/00
Filed: 1943-07-05
Abstract: 572,275. Moulding and vulcanizing rubber articles having metal &c. components. METALASTIK, Ltd., WOODCOCK, W. J., and GOODMAN, L. T. July 5, 1943, No. 20332. Divided out of Complete Specification of 572,261. [Class 87 (ii)] The invention is concerned with the vulcanization of articles comprising components of a rigid material such as metal, the components having been previously connected to one another (and being held in approximately their final spatial relationship to one another) by unvulcanized rubber which has been filled, in the plastic state, between the rigid components, the rubber being partially enclosed by the components and the unenclosed surfaces of the rubber being already in approximately their final shape, whilst a substantial part of the surfaces of the components is left uncovered by rubber. The invention is described in connection with the vulcanization of annular rubber-filled bushes comprising rings 78, 79, Fig. 1, and U-type mountings comprising strips 60, 61, Fig. 3, which have been filled with rubber 40, 40a, e.g. by the method described in Specification 572,261. According to the invention, the rigid components are held, during vulcanization and bonding of the rubber to the components in a vulcanizing press, by means which completes the enclosure of the rubber and engages the components over an area of contact which (to minimize the likelihood of undesired bonding of escaping rubber to the components) is the minimum required to hold them firmly. Thus, in Fig. 1, the pins 93 engage the rings 78, 79 to the least extent compatible with holding them firmly in position between plates 92 detachably carried on the hot platens of a hydraulic press which includes rigid spacing pads 95 and a stripper bar 98. Fig. 3 is a plan view showing the U-strips 60, 61 held in position by a jig comprising a central bolt 62 and blocks 63, 64 which also engage the strips over the minimum area required to hold them firmly.
Patent GB-332046-A (GB)
Title: Improvements in or relating to wood working machines
IPC: B27F4/00
Filed: 1929-07-03
Abstract: 332,046. Wilson &. Pearce, Ltd., and Williams, K. A. July 3, 1929. Drilling-machines. - In a machine for trimming and end-boring lengths of wood stock, the lengths are fed from the bottom of a hopper L by means of cam-actuated reciprocating slides N to each of which is attached an adjustable bar N<4> carrying spring fingers 0, 0<1>. The piece of stock is engaged and held by clamping arms U mounted on a lever T actuated by a cam R<1>, and the ends of the stock are trimmed by circular saws F. The cut ends are then drilled by pairs of motordriven drills D<2> which are fed and retracted by cams G<2> through adjustable quadrant arms J, by which adjustment the stroke of the drills may be given any value from a maximum to zero. The left-hand standard B is adjustable on its base by means of worm gear C<4>, and the drills are mounted on cross slides for centering.
Patent GB-1480970-A (GB)
Title: Apparatus and method for applying lids to containers
IPC: B65B7/28
Filed: 1975-05-14
Abstract: 1480970 Applying lids to containers R S CAWRSE 14 May 1975 20374/75 Heading B8C To apply lids 20 having a layer of heatactivated sealing material to containers A, the containers are moved stepwise on a conveyer B to a position below a polygonal-section mandrel C which rotates stepwise about a horizontal axis and around which lid-forming material 76, e.g. aluminium foil, is wound with the heatactivated layer outermost, the material 76 being held by vacuum to the mandrel and being heated by a heater 246 to soften the heat-activated material, a knife 88 cuts the material 76 to form separate lids, each container A is lifted in turn e.g. by reciprocating plates 98 so that its open end engages the heated lid on the bottom face of the mandrel, and then the heated lid is forced against the open end by air at superatmospheric pressure so that the lid adheres to the container as it is lowered, the air also serving to cool the heat-activated material. As shown containers A are fed from a magazine 50-54 four-abreast past a filling hopper 58 before arrival at the lidding position, additional knives 90 in this case being provided to cut the material 76 lengthwise into four strips. Depending on the rotary position of the mandrel faces, a manifold either connects passages 206, 212 in the mandrel C to a vacuum source, to maintain the material 76 on the mandrel, or to air at superatmospheric pressure to subsequently force the lids on to the containers. The sealed containers are subsequently extracted from the conveyer B on to a discharge table 108 by reciprocating extractor plates 102 and a pusher plate 106. Drive means for synchronizing operation of the apparatus is described, the drive means also controlling a slide valve (Fig. 10, not shown) for controlling the supply of vacuum and superatmospheric pressure to the passages 206, 212 via the manifold D.  As shown in Fig. 1 the container A may have rounded corners 14 such that when a square or rectangular lid is applied, four pull tabs 24 are defined at the corners of the lid. The container A may be of paper, metal or plastics, e.g. polyurethane, PVC or polystyrene, and the lid 20 is preferably aluminium foil coated with a thermoplastic adhesive such as polyvinyl acetate, polyvinyl alcohol, acrylic or polyamide.
Patent GB-148444-A (GB)
Title: Improvements in multiplex telephony
IPC: H04J1/00
Filed: 1920-07-10
Abstract: 148,444. Ges. f³r Drahtlose Telegraphie. May 27, 1919, [Convention date]. Addition to 147,837. Electric oscillations in line wires, telephoning by; electric oscillations, producing.-Relates to systems in which high-frequency oscillations, modulated by speech currents, are superposed on ordinary telephone circuits. Speech currents from a sub-station 3 are connected by a transformer 4 to a long-distance line 1, 2, while substation 5 is connected by transformers 6, 10, 11 to high-frequency generating and receiving sets 12, 13. The windings 7, 8, 9 of the transformers may bo in series or in parallel, the resistance of winding 7 being low in the former case and high in the latter case so as to absorb little of the received energy. The high-frequency current is modulated by connecting the secondary of transformer 10 across a condenser in the grid circuit of the valve 12. A coupling 14 is arranged to pevent inter-action between the transmitting and receiving sets 12, 13.
Patent GB-1012684-A (GB)
Title: Streptonigrin antibiotics and preparation thereof
Inventor: MARSH WILLIAM STEPHEN
Filed: 1962-05-28
Abstract: <PICT:1012684/C2/1> <PICT:1012684/C2/2> The antibiotics Streptonigrins F, A1, A2, P1 and P2 are produced by cultivating a microorganism selected from S. botttropensis ATCC 13854, S.fungididicus ATCC13853, S. flocculus ATCC 13852, 13851, 13850, 13855 and 13857-62 and an unidentified organism ATCC 13856 or a Streptonigrin (hitherto called BA-163)-producing mutant thereof, in an aqueous nutrient <PICT:1012684/C2/3> <PICT:1012684/C2/4> <PICT:1012684/C2/5> medium under submerged aerobic conditions, recovering the antibiotics from the fermentation broth and separating them. Cultivation at 28 DEG  C. for up to 80 hours is preferred.  The antibiotics are recovered by (i) solvent extraction from the filtered broth, preferably at pH 3.5-7.2 using a water-immiscible organic solvent such as n-butanol, ethylacetate or benzene and from the mycelial cake by using an alkanol of 1 to 4 carbon atoms or a 1:4 mixture of 3% phosphate buffer pH 4.0 and ethylacetate or (ii) absorption of the filtered broth on fuller's earth and extraction with methanol acetone or ethylacetate.  The Streptonigrins are separated as follows: (a) a crystalline mixture thereof on contacting a chloroform solution thereof with silicic acid-cellulose (2:1) in chloroform and elution with chloroform containing increasing amounts of ethylacetate gives Streptonigrins F, P1 and P2.  A non-crystalline mixture gives Streptonigrins A1 and A2; (b) a crystalline mixture thereof on contacting a pyridine-methanol (1:3) solution thereof with diethylaminoethyl-cellulose and elution with methanol containing increasing amounts of 0.1% acetic acid gives Streptonigrins F, P1 and P2.  A non-crystalline mixture gives Streptonigrins A1 and A2 or (c) counter-current distribution in the system ethylacetate-3% of aqueous phosphate buffer (pH 7.5) gives Streptonigrins F, P1 and P2. Streptonigrins F, P1, P2 are all weakly acidic substances which crystallize as red-brown crystals from acetone-ethylacetate (1:4). Streptonigrins F, P1, P2, A1 and A2 have the same solubility characteristics and colour reactions as Streptonigrin (see Specification 898,936).  They have the following further characteristics:-  <TABS:1012684/C2/1> The antibiotics form metal salts with metal hydroxides, e.g. Ca, Mg, K, Na, and Li salts, and react with diazomethane or methyl alcohol to form the methylester. Other esters are formed with alkanols.  The antibiotics are used as medicines (see Division A5).ALSO:A pharmaceutical and veterinary composition for oral or parenteral administration comprises a carrier and at least 0.0001% of streptonigrins F, P1, P2, A1 or A2, a metal salt thereof or ester thereof (see Division C2). The compositions may contain carcinostatic agents e.g. 6-mercapto purine, 8-azaguanine, urethane, 6-diazo-5-oxo-l-norleucine, azaserine, triethylenemelamine, mitomycine, triethylenephosphoramide, 1, 4-dimethyl sulphonyl-oxybutane or folic acid analogs.  The streptonigrins may also be used as disinfectants.
Patent GB-805296-A (GB)
Title: Optically active 7-carboethoxy-3-acetylthioheptanoic acids and their salts
IPC: C07D339/04
Filed: 1955-07-14
Abstract: The invention comprises (+) and (-)-7-carboethoxy-3-acetylthioheptanoic acids, their salts, both separately and as a mixture, with d- and l-ephedrine and the salt of the (+)-enantiomorph with benzhydrylamine; and the processes of producing these compounds by the following methods. 7-Carboethoxy-3-acetylthioheptanoic acid is contacted with l-ephedrine, preferably in equimolecular amounts, in an inert liquid reaction medium such as a lower ether, dioxan, a lower alcohol, benzene, toluene or aqueous mixtures thereof and the (+)- and (-)-l-ephedrine salts of the acid, thus formed, are separated by contacting the mixture with a suitable solvent, preferably ethyl ether, either by adding the mixture to the ether or by conducting the initial reaction in the presence of ether, whence the (-) salt precipitates and the (+) salt remains in solution, separation then being effected by filtration or decantation.  The corresponding (+) and (-) salts of 7-carboethoxy-3-acetylthioheptanoic acid with d-ephedrine are similarly prepared except that here it is the (+) salt which precipitates in ethyl ether and the (-) salt which remains in solution.  The (+) and (-) l-ephedrine and d-ephedrine salts may be converted to the free acids by treatment with an acid, preferably an excess of a non-oxidizing mineral acid such as hydrochloric acid and conveniently in an aqueous or organic solvent such as a lower alcohol, benzene, chloroform or mixtures thereof with subsequent recovery of the desired (+)- and (-)-7-carboethoxy-3-acetylthioheptanoic acids by conventional methods, whereby the (-) acid is obtained pure, the (+) acid being purified by reacting it with benzhydrylamine to form a salt thereof in a solvent which is preferably isopropyl ether and subsequently liberating the free acid again by acidification of a solution of the salt.  Examples are given.  Specifications 805,295, 805,297, 805,298, 805,299 and 805,300 are referred to.
Patent GB-672577-A (GB)
Title: Improvements in or relating to retainers and spacers for roller bearings
IPC: F16C33/54
Filed: 1950-08-17
Abstract: 672,577. Cages for roller bearings. AETNA BALL & ROLLER BEARING CO. Aug. 17, 1950 [Sept. 1, 1949], No. 20468/50. Class 12 (i). A cage for a rollerbearing comprises two hardened sheet-metal shells 20, 22, the second fitting within the first. Fingers 24, 32 with shaped rollerretaining flanges 26, 27, 34, 35 define rollerreceiving spaces 25, 25<SP>1</SP>, the fingers 32 being joined at their ends by a ring 33. Return lip flanges 28, 37 form channels 29, 38 which receive the fingers 32, 24 respectively. When the assembly is completed, the lip flanges are crimped or indented to fix the two shells 20, 22 together. The form shown is particularly suitable for a bearing having an inner race with a channel to receive the rollers. In a modification, the ends of the fingers of the outer shell are connected by a ring, instead of the fingers of the inner shell; this form is particularly suitable for a bearing having an outer channelled race-ring. In a further modification, for bearings having channelled inner and outer races, the ends of the fingers 24, 32 are not joined by rings.
Patent GB-242380-A (GB)
Title: An improved non-slipping horse shoe
IPC: A01L1/02
Filed: 1924-09-01
Abstract: 242,380. Lynes, A. J. Sept. 1, 1924. Integral treads.-A horseshoe of the kind having ribs or blades 2, 3 on the lower surface forming recesses 4 is provided with additional ribs 3<x> at the toe portion. Heel studs 6 may also be provided and be formed with recesses 7.
Patent GB-151446-A (GB)
Title: Improvements in or relating to electric relays
IPC: H01H50/02
Filed: 1919-08-22
Abstract: 151,446. Automatic Telephone Manufacturing Co., and Hudd, A. E. Aug. 22, 1919. Electro-magnetic switches designed as " track circuit " relays for railway signalling systems are constructed with an horizontal electro-magnet 1 and an horizontally pivoted armature 8 attracted by iron cheeks 2 at the ends of the electro-magnet and retracted by gravity. The armature carries a number of spring contacts 9 connected by flexible wires to terminals 11, and there are corresponding stationary contacts attached to terminals 13. The armature pivots about screws 6 carried on brackets 5. The electro-magnet, armature brackets, and terminals are attached to a suitably shaped cover-plate 3 which fits with rubber packing upon the edges of a rectangular glasssided box 20, and is held tightly in place by screwing into corner pillars 19.
Patent GB-835979-A (GB)
Title: Improvements in or relating to travelling stokers for shell type boilers
Inventor: WRAY JOHN WILLIAM
IPC: F23H11/10
Filed: 1958-06-27
Abstract: 835,979. Travelling grates. INTERNATIONAL COMBUSTION (HOLDINGS) Ltd. June 27, 1958, No. 20721/58. Addition to 828,681. Class 51 (1). In a shell-type boiler having a travelling grate supplied with air from an inlet 6 between the runs of the grate, a hole is formed in a plate 10 sealing the top of an ash pit 11 extending below the grate, so that air leaking past the seals between the runs of the grate flows through the return run of the grate to the ash pit, thus removing dust and ashes from the grate.
Patent GB-1352464-A (GB)
Title: N-alkyl-alpha-3,5-substituted phenoxy-alkyl amides and their use as herbicides
IPC: C07C233/00
Filed: 1972-05-04
Abstract: 1352464 Alkyl amides STAUFFER CHEMICAL CO 4 May 1972 [25 June 1971 (2)] 20748/72 Heading C2C The invention comprises compounds having the general Formula (I) where R<SP>1</SP> and R<SP>2</SP>, which may be the same or different, are halogen atoms or alkyl groups having 1 to 4 carbon atoms; R<SP>3</SP> is an alkyl group having 1 to 4 carbon atoms, and R<SP>4</SP> is an alkyl group having 1 to 7 carbon atoms. They may be prepared by reacting a compound of the Formula (II) with an amine of the Formula (III) The compounds of the invention may be used as herbicides.
Patent GB-960234-A (GB)
Title: New esters of acetion and process for their manufacture
IPC: C08K5/15
Filed: 1961-06-08
Abstract: The invention comprises esters of acetoin with aliphatic carboxylic acids containing 6 to 18 carbon atoms, and a process for their preparation comprising reacting at 50 to 200 DEG C. 3-chlorobutanone-(2) with the appropriate carboxylic acid in the presence of an alkali, or with an alkali metal salt of the carboxylic acid. Esters of acetoin exemplified are the caprylate, laurate, myristate, palmitate, undecylenate, oleate, adipate, pimelate, suberate, azelate and sebacate.