baber/WOPTO huggingface dataset:
Patent GB-269789-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B19/04
Filed: 1926-09-29
Abstract: 269,789. Duhamel, F. X. A., and Martel, N. Sept. 29, 1926. Identification and descriptive marks, producing on negatives by exposure.- The inscriptions are written on a sheet of paper 22 secured as by pins 23 to a plate 16 which, together with the paper, is inserted through an aperture 9. closable by a door 33, in the rear wall of the camera, and is slidable in the direction of a second aperture 10, so that the paper may be fed across this aperture through sinuous tunnels 11, 12. A roll-film in the camera is backed by opaque paper having, adjacent to each picture-section, a transverse slot adapted to register with the aperture 10. A blade spring on the plate 16 carries a pin adapted to engage in turn a series of holes 15 alongside the aperture 9; and the spring also carries a knob, whose shank slides in a slot 14. Inward pressure on the knob releases the pin, and permits the plate to be moved stepwise to feed successive inscriptions across the aperture 10. Over this aperture is a door 24 having spring hinges which tend to open it. The door is held closed by a latch 27, and has an opening 28 covered inside by a red transparency 32 and outside by a smaller door 29 similarly spring-hinged. In operation, the door 29 is first opened to ascertain that the inscription and the slot in the film backing are in register with the aperture 10, whereafter the door 24 is opened to cause the inscription to be printed on the film.
Patent GB-299158-A (GB)
Title: Improvements in and relating to flexible track vehicles
IPC: B62D55/24
Filed: 1927-09-14
Abstract: 299,158. Legros, L. A. Sept. 14, 1927. Endless - track vehicles.- Comprises a flexible track drive for a vehicle wherein a detachable ring- shaped member is fixed to the resilient tyre of a road wheel and is provided with teeth to engage apertures in the flexible track. The track may be constructed as described in Specification 234,657. In the construction shown in Figs. 1 and 2 each ring comprises segments 1 coupled together by hooks or links and provided with sloping sides 10, 11 embracing the tyre of the road wheel. The teeth 2 on the segments are preferably formed as truncated pyramids with slightly convex sides. One of the connections joining the links together is made adjustable so that the ring can be tightened on the road wheel so as to grip the tyre. The segments may be formed with overlapping side plates 12 on the outer side of the wheel. In the case of road wheels having pneumatic tyres the rings may each be made in one piece and applied to the wheel when the tyre is deflated. In the construction shown in Fig. 9 the ring segments are shaped to fit over a road wheel having twin tyres.
Patent GB-329580-A (GB)
Title: Improvements in or relating to flat work ironers
IPC: D06F67/06
Filed: 1929-08-08
Abstract: 329,580. Hamilton, C. E. Aug. 8, 1929. Ironing-machines with rollers rotating against concave surfaces.-To keep the padding 12 which is wrapped around the roller of an ironing- machine in position, substantially semi-circular guard members 15 are arranged at intervals along the roller over the exposed portion thereof. The guard members are preferably of resilient material and each may be yieldingly urged towards the roller by means of a spring 19 confined between the guard and an overhead rod or tube 17 through which pass pins 16 rising from the guard and passing through the springs 19. The lower portion of the guard at the delivery side may be formed with an integral or pivoted toe 20 for directing the goods to an adjacent. roller. When the toe is pivoted it is pressed away from the guard by a spring 23 to a position limited by a stop 24. Stripper members 30 are loosely carried on and depend from the rod or tube 17 and alternate with the toes 20. To allow the strippers to be raised without fouling an adjacent roller they may be formed in two portions pivoted together as shown. A weight may be carried on the strippers which coact with the earlier rollers of a series. Each stripper may comprise a single finger or two fingers secured to a yoke pivoted to the upper part, and in the latter case the guiding toes 20 instead of being formed on the guards 15 may be formed on the yoke or may be supported on a stiffening cross piece connecting the two fingers. The final rollers of the series may be of slightly greater diameter than the earlier rollers, whereby they rotate with a greater peripheral speed so that tension is put on the goods passing through the machine.
Patent GB-913919-A (GB)
Title: Production of allyl ethers
Inventor: STEPHENSON ROBERT JAMES
IPC: C07C69/02
Filed: 1960-07-13
Abstract: Allyl ethers, defined as any ethers containing the <FORM:0913919/IV (b)/1> moity, are prepared by reacting an allyl alcohol with itself or with another alcohol in the presence as catalyst of a cuprous salt and as co-catalyst of a trivalent inorganic acid, a Lewis acid, an acid ion-exchange resin or a sulphonic acid, i.e. any compound, organic or inorganic, containing a sulphonic acid group SO3H.  The invention also comprises the monoallyl ethers of neopentyl glycol. Preferred allyl alcohol starting materials are those of formula R1-CH=CH-CHR2-OH where R1 is hydrogen, hydrocarbyl or substituted hydrocarbyl, R2 is hydrogen or alkyl or R1 and R2 join to complete an alicyclic ring.  Many are specified.  Other, non-allylic, alcohols specified include aliphatic, alicyclic, and aralkyl alcohols, glycols, polyglycols, higher polyhydric alcohols and sugars. Specified sulphonic acids include sulphuric acid, sulphamic acid, organic sulphonic acids and sulphate esters.  The proportion of curprous salt is preferably within a range of 0.00001 mol to 0.5 mol per mol of allyl alcohol and of co-catalyst in the range of 0.1 to 50 equivalents per mol of cuprous salt.  The reaction is generally carried out under azeotropic distillation conditions, if necessary in the presence of an inert azeotrope former.  The reaction may be terminated by removing or neutralising the co-catalyst.  Examples describe the preparation of: diallyl ether; allyl n-butyl ether; allyl s-butyl ether; allyl benzyl ether; allyl cyclohexyl ether; allyl 2-chloroethyl ether; neopentyl glycol monoallyl ether; glycerol diallyl ether; mannitol triallyl ether; and mono- and di-allyl ethers of a polyethylene glycol.
Patent GB-1263559-A (GB)
Title: A method of determining the composition of a steel melt and apparatus for performing the method
Inventor: MITSCHE ROLAND
IPC: G01N23/222
Filed: 1969-05-13
Abstract: 1,263,559. Analysis by neutron bombardment. OSTERREICHISCHE STUDIEN GES FUR ATOMENERGIE G.m.b.H. May 13, 1969 [May 27, 1968], No.24424/69. Heading G1A. Analysis of a material involves bombarding it intermittently for short periods with neutrons having discrete energy levels and during the lifetime of the excited nuclei or intermediate nuclei produced thereby, measuring the prompt gamma radiation produced. The method of the invention may be applied to the determination of the amount of a wide variety of element in a steel melt. Fig.1 shows apparatus for steel refining by oxygen blowing through water-cooled lance 15. The lance is also fitted with a tube (31) Fig.3 (not shown) for conducting ions from an ion generator 3 to a target 5. The tube may be in the water cooling channel or on the axis of the lance. Neutrons produced from the target 5 are slowed down e.g. by the water acting as a moderator before they reach the melt. Collisions with the nuclei of atoms in the melt to produce excited nuclei from which the y-rays emitted are detected by a detector 11 via window 10. In other arrangements, Figs.4 and 5 (not shown) the neutron source and moderator are separate from the lance. In the former arrangement, the source is on one side of the melt surface and the detector on the other and separate windows are provided for each. The latter operates with a back-scatter configuration. The neutrons are of a specific energy level to correspond with particular atoms in the melt to produce specific y-ray spectra. The detector is a semi-conductor device e.g. Ge (Li), Si (Lb), InSb or CdIe. The output is amplified and investigated by analog or digital computer techniques to control the oxygen blowing. The slag itself may be investigated if the oxygen blowing is stopped. Instead of direct y-spectroscopy, pair production (electron and positron from each y-quantum) may be effected to enable more accurate measurement of the y-energies. Alternatively an integrating Compton spectrometer may be used for y-ray measurement.
Patent GB-183067-A (GB)
Title: Improvements in and relating to pumps
IPC: F04B33/00
Filed: 1921-09-14
Abstract: 183,067. Imrie, H., (Reece-Hilton Inc.). Sept. 14, 1921. Cylinders; pistons; piston packing.-In a motor-car pump the cylinder body 1 and cover 4 are of pressed sheet metal. A strap 26 secured to the bottom of the cylinder is pivoted on a clamp 29 on the running board, and extensions 22 of a second clamp are pivoted on a pin 25 in the cover. The link 15, to which the pumpoperating lever is pivoted, is also mounted on the pin 25. The piston consists of a wood block 53, saturated with lubricant, and end plates 50, 54 with notched peripheries. The cup-leather packing 52 is distended by a spring 57 and is moistened by the lubricant in the block 53.
Patent GB-921544-A (GB)
Title: Improvements in devices for applying paste to wallpaper and the like
IPC: B44C7/04
Filed: 1960-07-14
Abstract: <PICT:0921544/IV(a)/1> <PICT:0921544/IV(a)/2> A device for applying paste to wall paper comprises a support 1, 2 on which is a trough 7 to contain paste, a pasting roller 8 dipping into the paste, guide means 9 and 10 arranged on each side of the pasting roller, at least one of the guide means being supported in L-shaped slots the inner arm of which extends towards the pasting roller, and paste spreading means 18 positioned adjacent the pasting roller and adjustable towards and away from the periphery thereof.  The guide means 9 and 10 are preferably rollers having stub axles 9a and 10a located in L-shaped slots 5 the lower arms of which have a restriction 11 past which the stub axles have to be forced.  The spreading means is preferably a rod 19 carried by levers 20 pivoted at 23 to the ends of the trough. The trough has a lug 6 at each end which fit corresponding slots 3 in the ends 2 of the support means and the pasting roller is provided at its ends with spindles which rest in bearings in lugs 6.  The pasting roller 8 consists of a light metal or wooden core 8a and a sleeve 8b of resilient material-foam rubber or foam synthetic plastic material.  The roll of paper to be pasted is supported on a spool 13 the spindle of which rests in U-shaped lugs on the inside of the walls 2.  The spool 13 has movable end flanges to adjust its length for different widths of papers.  In operation paper is pulled from spool 13 through the pasting apparatus as indicated in Fig. 4.
Patent GB-1157520-A (GB)
Title: Improvements in or relating to Electronic Amplifier Arrangements.
IPC: H03F3/343
Filed: 1968-05-23
Abstract: 1,157,520. Amplifiers. HONEYWELL Inc. 23 May, 1968 [29 May, 1967], No. 24584/68. Heading H3T. An electronic amplifying arrangement comprises a differential amplifier 10, Fig. 1, first and second impedance networks, i.e. resistors 19, 21 and 26 respectively coupling the input 25 of the arrangement to the first and second inputs 12, 14 respectively of the amplifier, a feedback network, i.e. resistors 32, 40 from an output 16 of the amplifier to the second input 14 and means coupling the output of the arrangement to an output of the amplifier, the gain of the arrangement being determined by selection of the magnitude of an element of the second impedance network, i.e. resistor 26. It is shown in the Specification that by suitable choice of this resistor the gain can be varied and made either positive or negative, or alternatively zero. The resistor 40 may be omitted (Fig. 2, not shown). The resistor 26 may comprise the source to drain path of a field-effect transistor 51, Fig. 3, the gate potential of which is determined by the collector potential of a junction transistor 56, the base bias of which is variable. In a modification, using this latter arrangement, the amplifier input comprises an A.C. signal and also a fixed D.C. potential and the A.C. and D.C. components in the output are separated out by filter networks, the D.C. component being utilized as an indication of the gain (Fig. 4, not shown).
Patent GB-1516172-A (GB)
Title: Electrical contact assembly for a switching device
IPC: H01H1/50
Filed: 1975-06-09
Abstract: 1516172 Switch contacts ELMEG ELEKTROMECHANIK GmbH 9 June 1975 [21 Sept 1974] 24599/75 Heading H1N A contact spring blade 1, 2 is covered at least partially on one side(s) with a polysulphone or polyethersulphone plastics film 12, 13, 14 which acts as a resilient damping member. In one embodiment, two movable contacts 5, 6 mounted on an insulating support 7 co-operate with contacts 3, 4 mounted on spring blades 1, 2 covered on one or both sides with the plastics film 12, 13, 14. The blades 1, 2 are clamped between insulating members 8, 9, 10 by a rivet or screw 11, compression of the films 12, 13, 14 allowing a precise predetermined distance between the contacts 3, 4 to be obtained. The moving contacts 5, 6 may alternatively be attached to spring blades covered with plastics films. The spring blades are manufactured by punching them out of a bronze sheet covered on one or both sides with the plastics film.
Patent GB-1344136-A (GB)
Title: Voltage regulator circuits
IPC: G05F3/18
Filed: 1971-04-19
Abstract: 1344136 Limiters GENERAL ELECTRIC CO 19 April 1971 [20 March 1970] 24605/71 Heading H3T [Also in Division G3] An arrangement operating as a limiter with adjustable limiting level comprises a pair of terminals 2, 3, to which the voltage to be limited is applied, across which is connected the collector to emitter path of a transistor 9. Transistor 9 is connected as a Darlington pair with transistor 5, the base of which is connected by means of a resistor 13 to the terminal 3, and by way of a Zener diode 15 to the centre point 17 of a potentiometer comprising resistors 18, 19 connected across the terminals 2, 3. The resistors 18, 19 may be replaced by an adjustable potentiometer (Fig. 1A, not shown). In a modification, the Darlington pair is replaced by a single transistor, and an emitter follower is connected between the potentiometer centre point and the Zener diode (Fig. 4, not shown). The Specification also discloses integrated circuit constructions of the arrangements of Figs. 1, 4 (Figs. 3, 5, not shown).
Patent GB-518494-A (GB)
Title: Improvements in or relating to blowpipes and methods of producing jets
IPC: F23D14/54
Filed: 1938-08-22
Abstract: 518,494. Nozzles. SHORTER PROCESS CO., Ltd. Aug. 22, 1938, No. 24651. Convention date, Aug. 24, 1937. [Class 69 (iii)] [Also in Groups XI and XXII] In a blow pipe burner a combustion supporting gas such as oxygen and a fuel gas such as acetylene are supplied through a mixer to a passage 23 in a blowpipe head H. The passage 23 leads to a chamber 25 where the mixture is expanded and is then conveyed through a relatively wide and thin passage 27 arranged at or nearly at 90 degrees to the passage 23, to an elongated orifice 28 where the gases issue for ignition as a jet having an equalized velocity front. The blowpipe head H comprises a front block 20, a rear block 21 and a V- shaped gasket 22 secured together by bolts 39, the passage 23 and chamber 25 being formed in the block 21 and the passage 27 being formed by the opening in the gasket. The shape of the chamber 25 is preferably that of a cylinder. The Specification as open to inspection under Sect. 91 states that a similar construction may be utilized for producing jets having equalized velocity fronts of gaseous fluids other than combustible mixtures. This subject-matter does not appear in the Specification as accepted.
Patent GB-339620-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: C09B29/20
Filed: 1929-07-10
Abstract: 339,620. Groves, W. W., (I. G. Farbenindustrie Akt.-Ges.). July 10, 1929. Divided on and addition to 336,938. Samples furnished. Azo dyes; azo dyes, forming on the material.- Azo dyes, insoluble in water, are made in substance or on a substratum, e.g. the fibre (including regenerated cellulose and esters and ethers of cellulose) by coupling a diazo, tetrazo or diazoazo compound free from COOH, S03H and OH groups with an arylide of the formula wherein one Y = hydrogen and the other Y = OCH3. In examples, (1) cotton is impregnated, with 2<1> : 3<1> - oxynaphthoyl-4-amino-1: 2-dimethoxybenzene and developed with diazotized 2 : 5- dichloraniline. Other diazo components specified are 4-, 5- and 6-chlor-2-toluidine, 4-chlor-2- nitraniline, 2-chlor-4-nitraniline, o- and mnitraniline, 3-nitro-4-toluidine, 4- and 5-nitro-2- toluidine, 4- and 5-nitro-2-anisidine, o-aminoazotoluene, 1-aminoanthraquinone, m-chloraniline, 2- phenetoleazo-a-naphthylamine and the 1 : 3-dimethoxy derivative as coupling component. Specifications 6379/12, and 17279/13, [Class 15 (ii), Dyeing, Processes &c. for], are referred to. 2<2> : 3<1> Hydroxynaphthoyl - 4 - amine-1-alkoxymethoxybenzenes of the above formula are made from 2 : 3-oxynaphthoic acid and the corresponding 4-amino-1-alkyloxy-methoxybenzene.
Patent GB-252961-A (GB)
Title: Improvements in and relating to gearing for operating wireless instruments
IPC: H03J1/08
Filed: 1925-10-05
Abstract: 252,961. Newey, J. G., and Jerred, C. B. Oct. 5, 1925. Wireless tuning-apparatus, adjustment devices for.-In gearing of the type in which a driving-wheel meshes with two or more toothed segments or wheels which are rotated simultaneously for adjusting wireless instruments, a spring engages each driven member with opposite turning moment for preventing backlash in the gearing. The springs d are coiled around the gear spindles b, one end of each spring engaging the segment or wheel at a point g remote from the spindle, the other end being anchored in a fixed frame part e.
Patent GB-1154988-A (GB)
Title: Photographic Flashlamp Unit
Inventor: HARTMAN DONALD W
IPC: F21K5/08
Filed: 1968-05-23
Abstract: 1,154,988. Photo-flash lamp. SYLVANIA ELECTRIC PRODUCTS Inc. May 23, 1968 [June 1, 1967], No.24744/68. Heading G2L. A reflector for a photo-flash lamp is made of a thermoplastic material having sufficient residual stresses to produce readily visible distortion of the reflector when heated by the flashing of the lamp. In the embodiment, the material may be bi-axially oriented polystyrene or rigid polyvinyl chloride. A flash-cube incorporating the alumized reflector contains filamentary zirconium and oxygen at super atmospheric pressure.
Patent GB-321999-A (GB)
Title: Improvements in or relating to universal joints
IPC: F16D3/78
Filed: 1928-08-29
Abstract: 321,999. Gray, C. H. Aug. 29, 1928. Universal joints.-A coupling member comprising a flexible disc connected to the driving and driven shafts by spiders engaging stud holes in the disc is reinforced by non-metallic cords lying within the disc and so arranged that each connecting point is at least half encircled by the reinforcing members. In the form shown in Fig. 1. the cords are in the form of plain loops 10 which encircle adjacent connecting points 12, 13 and are embodied by vulcanization in the moulded rubber disc 11. Alternatively, figureof-eight loops may be employed between the connecting points or other special forms of winding. so arranged that each connecting point is at least half encircled by the reinforcing cord or cords. Specification 188,191 is referred to.
Patent GB-685085-A (GB)
Title: Improvements in or relating to substituted ammonium compounds
Inventor: CAMPBELL NORMAN ROBERT
Filed: 1950-10-11
Abstract: The invention comprises new alkane-a ,o -bis-trimethylammonium methosulphates of general formula: <FORM:0685085/IV (b)/1> where n is an integer from 4 to 10 inclusive.  They may be prepared by treating dimethyl sulphate with an a ,o -bis-(dimethylamino) derivative of a saturated straight chain aliphatic hydrocarbon containing from 4 to 10 carbon atoms in the molecule, in the presence of an inert solvent. Alternatively, the dimethyl sulphate may be treated with an a ,o -diamino or a ,o -bis-(methylamino) derivative of a saturated straight chain aliphatic hydrocarbon containing from 4 to 10 carbon atoms in the molecule, in the presence of an inert solvent and an alkali.  The alkali is preferably an alkali metal carbonate.  In the examples: (a) 1,6-diamino-n-hexane dissolved in light petroleum and sodium carbonate is added; dimethyl sulphate is added and n-hexane-a ,o -bis-trimethyl ammomium methosulphate is separated from the mixture; (b) 1,6-bis-(dimethylamino)-n-hexane dissolved in benzene is added to a mixture of dimethyl sulphate, methyl alcohol and acetic; n - hexane - 1,6 - bis - trimethylammonium methosulphate crystallizes from the mixture (c) 1,10-bis-(dimethylamino)-n-decane dissolved in benzene is added to a mixture of dimethyl sulphate and alcohol; n-decane-1,10-bis-trimethylammonium methosulphate is separated from the mixture.  The bis-(dimethylamino) compounds used in examples (b) and (c) are prepared from the appropriate diamino compound by interaction with a boiling mixture of formic acid and concentrated aqueous formaldehyde.
Patent GB-668211-A (GB)
Title: Diversity receiving system for single-sideband signals
IPC: H04B7/08
Filed: 1949-09-28
Abstract: 668,211. Diversity receivers. SOC. FRANCAISE RADIO-ELECTRIQUE. Sept. 28, 1949 [Oct, 5, 1948], No. 24933/49. Class 40 (v). A diversity system for receiving single sideband reduced carrier amplitude radio signals, comprises two receiving channels connected to a common utilization circuit, a cut-off device in each channel, a filter connected to each channel allowing only the carrier to pass, a detector connected to each filter, the detectors being differentially connected so as to compare their outputs in a common resistor, and means controlled by the voltage across the resistor for actuating the cut-off devices. As shown, aerials 1, 1<SP>1</SP> feed respectively R.F. amplifiers 2, 2<SP>1</SP>, and I.F. amplifiers 3, 3<SP>1</SP> and 6, 6<SP>1</SP>, the amplifiers 6, 6<SP>1</SP> each having a stage which may be cut-off by a control potential derived from the channel providing the strongest carrier and being connected to a common demodulator 7 and L.F. amplifier 8. Band-pass filters 4, 4<SP>1</SP> pass only the frequencies corresponding to the respectivel carriers through the amplifiers 5, 5<SP>1</SP> to a differential detection circuit D, D<SP>1</SP>, the voltage across resistor 10 being positive or negative according to whether the voltage supplied by channel 1 is lower or higher than that of channel 1<SP>1</SP>, and being supplied through a time constant circuit 11, 12 to the grid of a triode 13. The amplified D.C. voltage across the cathode resistor 14 is fed to the grid of a triode 15 forming part of a trigger circuit 15, 16, arranged so that when there is no detected signal the triode 15 is a conductor and the triode 16 a non-conductor, a negative potential on the grid of 13 causing triode 16 to conduct and triode 15 to become a non-conductor. The cut-off voltages for the respective channels are fed from the anodes of valves 15 and 16 via potentiometers 29, 30 and 29<SP>1</SP>, 30<SP>1</SP>, and time constant circuits 31, 32 and 311, 321. Limiters 33, 33<SP>1</SP> are provided to reduce parasitic noise and deformation of the signal during switching, the control voltage varying between the potential of the slider of potentiometer 34 for the channel cut off, and earth potential for the channel in use.