baber/WOPTO huggingface dataset:
Patent GB-847972-A (GB)
Title: Improvements in or relating to indicator means
Inventor: EVANS MEURIG HILL
IPC: G09F9/46
Filed: 1958-01-22
Abstract: 847,972. Visible signalling apparatus. K.G.M ELECTRONICS Ltd. Jan. 12, 1959 [Jan. 22, 1958; March 31, 1958; July 28, 1958], Nos. 2215/58, 10259/58 and 24276/58. Class 118 (2). A stacked indicator for the selective showing of any one of a set of numbers or letters &c. comprises a stack of plates arranged with their adjacent faces substantially in contact, a totally internally-reflecting light transmitting passage arranged at the rear of each one of the plates and a distinctive source of light associated with each passage to provide for trans-illumination of the plates and of the symbols on them. Fig. 1 of the Provisional Specification 2215/58 shows an indicator comprising stacked plates 1, for example of " Perspex " (Registered Trade Mark), which are bent to provide portions 2 substantially at right-angles to the plane of the operative portions of the plate on which the symbols, for example letters or numbers, are engraved. A festoon lamp 3 is associated with each of the plates so that they may be selectively illuminated total internal reflection of the light being provided at the bend in the plate. In the modification shown in Fig. 2, of the Provisional Specification 2215/58, the perspex plates 1 are stacked and bent so that their end portions 2 are mounted in slots in a block 5 of opaque material each being associated with a pea lamp 6 housed in bores in the block. As shown in Fig. 3 of the Provisional Specification 2215/58, the slots 4 are such that the portions 2 of the plate do not reach the end of their slot and the lamp 6 penetrate into it a short distance. The edge of the plate remote from the lamp 6 may be cut at an angle, polished and coated with reflective material to provide for transverse internal reflection at this face to direct the light at other angles into the engraving which forms the symbol on the face of the plate. The symbol on the plate may be in the form of discrete dots or the like separated by a distance small compared with the diameter of the dots. As shown in the Figure of the Provisional Specification 24276/58, a solid block 20 of Perspex or similar transparent material illuminated by a lamp 17 has one edge in contact with one Perspex plate of a stacked indicator, the block and the edge of the plates 11 may be coated with an opaque or silver finish to ensure total internal reflection.
Patent GB-1039617-A (GB)
Title: Gas separator
IPC: F04D9/00
Filed: 1964-01-17
Abstract: 1,039,617. Centrifugal pumps. BORG-WARNER CORPORATION. Jan. 17, 1964 [Feb. 12, 1963], No. 2241/64. Heading F1C. [Also in Division B2] A submersible separator 10 for separating gas from liquid before it is pumped by a submersible multi-stage pump 12 comprises a housing 11, 20 provided with an inlet 23 and an outlet 36, an impeller 26 for moving the liquid from the inlet towards the outlet while subjecting it to centrifugal force in a separator chamber 33 to separate the gas therefrom and a slinger 35 which diverts the gas and gas-containing liquid collecting near the centre of the chamber 33 away from the outlet 36, the gas being bled off via tubes 38 and the substantially gas-free liquid being discharged through the outlet 36 towards the pump inlet 43. The impeller 26 is mounted on a shaft 16 which also carries the slinger and the impellers 15 of the pump. The housing part 20 is connected to a seal 13 located between the housing and a motor 14 coupled to the shaft 16. The bled off gas and any entrained liquid pass from the tubes 38 through apertures 40 in the housing to return to the liquid being pumped.
Patent GB-585156-A (GB)
Title: Improved mountings for observation instruments
IPC: F16M11/14
Filed: 1944-02-07
Abstract: 585,156. Range-finder mountings. BARR & STROUD, Ltd., and FRENCH, SIR J. W. Feb. 7, 1944, No. 2269. [Class 97 (i)] [Also in Group XXI] A mounting for a range-finder or other observation apparatus A in a turret or cupola B comprises a support 3, as shown, of ball-andsocket form, at one end and a support 6 forming a guide for the other displaceable end. The end is frictionally held in adjusted position by pressure of resilient anti-vibration elements 2 in which the ends of the casing A are rotatably mounted. In a modification, Fig. 3, not shown, the ends of the casing may protrude from the turret B and the displaceable end may have serrations or teeth which mesh with similar parts on the support, the resilience of the antivibration elements allowing longitudinal displacement. In another modification, Fig. 5, not shown, the fixed support may be in the' form of a removable plate, primed in position, for ease in assembling or removing.
Patent GB-1496881-A (GB)
Title: Moulding of transparent synthetic resin sheets
IPC: B29C51/42
Filed: 1975-03-12
Abstract: 1496881 Moulding transparent panels HAWKER SIDDELEY AVIATION Ltd 12 March 1975 [17 Jan 1974] 02292/74 Heading B5A [Also in Division E1 A shaped transparent sheet, e.g. an aircraft window is made from a blank prepared from stretched acrylic sheet by heating the blank to a temperature below its softening point, forming the sheet between dies 51, 52 heated to the softening point of the sheet under high pressure, e.g. 1¢ tons/in.<SP>2</SP>, and cooling the formed sheet to ambient temperature while clamped between the dies to prevent contraction of the stretched sheet. The blank is cut to shape, cleaned and given an anti-static treatment before being heated between platens 41, 42 (Fig. 4, not shown) with a surrounding spacer (44) forming an air space. The blank is transferred to the electrically heated dies 51, 52 and pressed in three stages of increasing pressure with pressure release in between to allow escape of trapped air through vents 53, 54. Cooling water is then passed through both dies. A frame 55 prevents excessive lateral spread of sheets of incorrect thickness.
Patent GB-659174-A (GB)
Title: An oscillation generator for frequency-modulation transmission systems
IPC: H03C3/09
Filed: 1949-01-28
Abstract: 659,174. Frequency modulation. COMPAGNIE INDUSTRIELLE DES TELEPHONES. Jan. 28, 1949, No. 2357. Convention date, Feb. 25, 1948. [Class 40 (v)] A frequency-modulated oscillator comprises a valve with its anode circuit back-coupled to its grid circuit by two networks in series, the first giving a phase shift which varies with frequency, the second producing a phase shift which varies with the modulating current or voltage applied to it. As shown in Fig. 3, the anode circuit of the valve L is transformercoupled to the first phase-shifting network. P, the output of which is coupled to the second network M and thence to the grid circuit. The network M comprises a balanced modulator, and when the modulating input applied at terminals 3, 4 is reversed in polarity, a relative phase shift of 180 degrees is produced by the network. The valve is thus caused to oscillate at a different frequency such that a compensating phase shift of 180 degrees is produced by the network P. In a modified circuit, Fig. 5, arranged to produce gradual frequency charges as the modulating-voltage varies, the network P is arranged as in Fig. 3, but the balanced modulator comprises two separate paths between its oscillatory input 7, 8 and its oscillatory output 5, 6. One of these includes resistors R/2 and supplies unmodulated current without phase shift. The other includes capacities 2c and supplies amplitude-modulated current with approximately 90 degrees phase shift. The resultant current has a phase shift which varies proportionately to the modulating-voltage, thus causing the valve to generate oscillations with equivalent frequency deviation. Specification 606,408 is referred to.
Patent GB-607059-A (GB)
Title: Improvements in or relating to amplifier circuits
IPC: H03F3/02
Filed: 1946-01-24
Abstract: 607,059. Valve amplifying circuits. RAYTHEON MANUFACTURING CO. Jan. 24, 1946, No. 2360. Convention date, Jan. 27, 1945. [Class 40 (vi)] An amplifier, particularly for audio frequencies uses a double valve having a common cathode and a common space charge grid, the two control grids and two anodes being situated on opposite sides of the cathode. The two sections of the valve are connected in cascade as a resistance capacity coupled amplifier. In the Figure, the signal is applied through a resistance capacity biassing circuit 56, 58 to control grid 10. The associated anode 4 is resistance capacity coupled to the second control grid and the output voltage is developed across resistance 34 in the second anode. Common space charge grid 8 is connected to the H.T. supply through resistance 38 which may or may not be byepassed. Using a valve as described in Specification 607,058, [Group XL (a)], and the values of components given, a gain of 250 may be obtained.
Patent GB-840956-A (GB)
Title: Switching matrices employing radiation-emissive and radiation-sensitive devices
IPC: H03K17/78
Filed: 1959-01-22
Abstract: 840,956. Photo-cell circuits. NATIONAL CASH REGISTER CO. Jan. 22, 1959 [Jan. 23, 1958], No. 2361/59. Class 40(3). [Also in Groups XL(a) and XL(c)] Fig. 1 shows a switching matrix for selectively connecting rows 43, 44, 45 to columns 40, 41, 42 the junctions between which are provided by photo-emissive elements such as 46 associated with each column and optically coupled to photoconductive elements such as 47 each of which is associated with a row. If, for example, an alternating current signal derived from the secondary of transformer 56 is applied to column 40 by closing switch 50 the associated photo-emissive units 46-90 will cause the associated photoconductive units such as 70 to pass to their low impedance condition so that if an input signal is applied to row 45 by closing switch 55 an output signal appears across load resistor 79 and may be derived between terminals 82, 83. Thus by selective energization of given rows and columns output signals may be derived from any given photoconductive device. The matrix may function as a logical circuit, Fig. 4 (not shown), various combinations of input signals being associated with other combinations of output signals. Fig. 3 shows a switching device having three sets of input conductors and a plurality of planes containing the optical coupling elements. If for example input signals are applied to conductor 98 and to one of the conductors 95 or 103. both electro-luminescent elements 101, 108 will be optically coupled to photo-conductive cell 102 radiation from either of the elements being sufficient to produce an output signal on the terminal 102a so that the circuit functions as an OR gate, an output being produced when an input signal is applied at the same time to terminal 121 and either of terminals 120, 122. Alternately, the circuit could function as an AND gate in which the output is obtained only when input signals are supplied to all three of the input conductors.
Patent GB-701348-A (GB)
Title: Improvements in or relating to dividing devices for machine tools
IPC: B23F23/08
Filed: 1952-01-30
Abstract: 701,348. Milling. AKTIEBOLAGET SVEAEXPORT. Jan. 30, 1952 [Feb. 21, 1951], No. 2514/52. Class 83 (3). [Also in Group XXIII] An indexing device for a machine tool comprises a helically-grooved shaft 5 reciprocable in a sleeve 4 to rotate it, the degree of rotation being determined by the length of stroke of the shaft. The shaft is reciprocated by a flywheel 10 rotated by a pinion 9, a shaft 11 carrying a pinion 16 engaging a stationary internal gear 13, and a crank pin 17 engaging a slot in a member 18 fast with the shaft. The length of stroke and hence the degree of indexing, which may be (nx360+α) degrees, is determined by adjustment of the gear 13 by means 25, 26. The work 31, on which straight teeth are milled or ground, is reciprocated oppositely from the shaft 5 by a crank 35 on the wheel 10 and is indexed by a gear 40 connected to the sleeve 4 by a gear 39. On a working stroke, a clutch 42 holds fast the gears 39, 40 and, on the return stroke, a clutch 37 transmits the rotation of the sleeve 4 to the work to index it. The clutches are actuated by stops 43 on the wheel 10. In a modification, a gear mounted on a swinging frame may be engaged between the gears 39, 40. In a further modification for grinding twist drills, reamers &c., a helical motion is given to the work by a second helical shaft 52, Fig. 4, which reciprocates in time with the work and transmits a helical motion via a sleeve 51 and gears 63, 40. The indexing shaft 5, the shaft 52, and the workshaft 28 are reciprocated by adjustable cranks 57 on a common shaft 60, or by means similar to that of the first embodiment. The controlling clutches such as 37 may be electromagnetically operated. The device may be so arranged that only a portion of the working crank movement is effective and the cutting then takes place at approximately constant speed, which is desirable when a grinding disc speed of 100 metres/second and a feed of 1 metre/second is employed. In yet another modification for grinding straight teeth, the work is reciprocated by a hydraulic piston 73, Fig. 6, and is indexed by a helical shaft 75 whose rotation is controlled by clutches 78, 82 actuated by dogs 87, 88 and levers 84 ... 86. The work may also be reciprocated pneumatically or electrically.
Patent GB-225420-A (GB)
Title: Improvements in feeding troughs for pigs and other animals
IPC: A01K5/02
Filed: 1924-02-01
Abstract: 225,420. Angier, R. A. Feb. 1, 1924. Feeding appliances for animals.-A feeder for pigs &c. having a hopper 1 by which troughs 11, 12 are supplied with food is fitted with a measuring-device consisting of a valve having longitudinal vanes 8, 9 radiating from a shaft 4 mounted above the hopper outlet 3 and turned by hand to bring the cavities 10 between the vanes alternately into the charging and discharging positions. Four vanes at right angles or three as shown may be employed. The shaft 4 is rocked by a crank handle at one end. A single trough may be employed.
Patent GB-988761-A (GB)
Title: Improvements in or relating to disc brakes
IPC: F16D55/224
Filed: 1963-01-22
Abstract: 988,761. Disc brakes. H. TEVES, E. A. TEVES, and M. TEVES, [trading as ALFRED TEVES MASCHINEN UND ARMATURENFABRIK KOMM. GES.]. Jan. 22, 1963 [March 21, 1962], No. 2697/63. Heading F2E. In a spot-type disc brake comprising two arms 2, 3 pivotally secured to a brake carrier 1 and adapted to be actuated by means of an hydraulic cylinder 6 which engages the free end of the arm 3, the piston rod 5 being pivotally connected to the free end of the other arm 2, a restoring and centring compression spring 15 is arranged to act on both arms 2, 3 at different distances from their respective pivotal points 10, 11, the point of connection of the spring with the arm 3 adjacent the actuating device 6 being at a greater distance from the pivotal point with the brake carrier 1 than that on the other side of the disc 12. This arrangement ensures that the moment exerted by the weight of the actuating device 6 acting on one side of the disc is balanced.
Patent GB-230028-A (GB)
Title: Improvements in electron discharge apparatus and methods of operating the same
IPC: H03F1/08
Filed: 1925-01-30
Abstract: 230,028. British Thomson-Houston Co., Ltd., (Assignees of Warner, J. C.). Feb. 29, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Thermionic amplifiers.-In an amplifier having a cathode 2, an anode 3, a control grid 4, and a space-charg grid 5 mounted be tween the cathode and control grid, an impedance, such as a resistance 7, is connected between the space-charge grid and a source 6 of potential in the anode-cathode circuit, so that the grid 5 is maintained at a positive potential less than that of the anode. An increase in the potential of the control grid causes an increase in the anode-cathode current, and a decrease in the current in the circuit of the space-charge grid. The potential drop across the resistance is thereby decreased and the potential of the grid 5 increases with the result that the space-charge grid assists the control grid.
Patent GB-936267-A (GB)
Title: Improvements in or relating to endless conveyors
IPC: B65G17/12
Filed: 1962-01-25
Abstract: 936,267. Endless conveyers. MAIG MUEHLENBAU UND INDUSTRIE G.m.b.H. Jan. 25, 1962 [Feb. 1, 1961], No. 2781/62. Class 78 (1). Perforated plates 3 are pivoted on pins 2 of endless chain links 1 and are provided with angle members 31 which are engageable by weights 6 pivotally mounted on a flange 51 of a chain wheel shaft 5. In use, the weights 6 bear on the angle members 31 and pivoting of the plates 3 to the position shown in the lower run of the chains is delayed until the chains leave wheels 4. The apparatus may be used in the treatment by hot gas of raw material for cement. Springs may be used in place of or to assist the weights 6.
Patent GB-687621-A (GB)
Title: Improvements in or relating to a positive ion microscope
IPC: H01J37/27
Filed: 1951-02-05
Abstract: 687,621. Heavy-ion-beam tubes. COLTERJOHN, W. L. Feb. 5, 1951, No. 2792/51. Class 39(i) In a " shadow " microscope utilizing a positiveion beam, a highly divergent beam is produced by reflecting a collimated ion beam from a rounded point. An ion-source 15 of known type, supplied with a flow of krypton or mercury vapour by tubes 16, 18, produces a beam which is focused by lens 21, through holes in container 22 and object-holder 26 on to positive point 31. Lens 21 may be dispensed with. An exhaust tube 13 keeps the tube continually exhausted. As shown to enlarged scale in Fig. 3 the rounded tip 33 reflects a highly divergent beam back through the object 27 to give an enlarged shadow picture on fluorescent screen or photographic plate 30. Point 31 is adjustable externally by screws 35, and this end of the tube is removable by releasing demountable joint 14. In a modification, Fig. 4 (not shown), the object is actually supported on the point and its structure modulates the reflected ion beam which approaches or touches the object without actually penetrating it.
Patent GB-976864-A (GB)
Title: Improvements in cooling bed arrangements for rolling mills
IPC: B21B43/00
Filed: 1962-01-25
Abstract: 976,864. Rolling. F. MOELLER, and K. NEUMANN, [trading as VERWALTUNGSGESELLSCHAFT MOELLER & NEUMANN oHG]. Jan. 25, 1962 [Jan. 25, 1961], No. 2819/62. Heading B3M. [Also in Division B8] A transfer device for moving work from a reciprocating feeder cooling bed to a roller cooling bed includes rocking levers which impart a turning and lifting movement to the work during transfer. Pivotally attached at 4 to reciprocating feeders 2 of a first cooling bed are rocking levers 3, to which are attached rollers 5. As the feeders 2 perform a circular movement to lift a workpiece 8 to the rollers 1, a second cooling bed, the levers 3 move with the feeders until the rollers 5 contact a stationary stop 6. At this point the levers 3 are forced to rotate and the workpiece 8 is moved into a vertical position on the rollers 1. The levers 3 return by torsion springs or, more desirably, by gravity to their initial positions, abutting stops 2b on the feeders 2. For transferring work without rotation, the stops 6 are rotated on levers 12 out of the path of the levers 3.
Patent GB-1259731-A (GB)
Title: Pressure sensitive adhesive tape
Inventor: KARASS THOMAS JOHN
IPC: C09J7/21
Filed: 1970-01-21
Abstract: 1,259,731. Pressure sensitive adhesive tape. T. J. KARASS. 21 Jan., 1970, No. 2828/70. Heading B2E. A pressure sensitive adhesive tape comprises a backing strip 1 in which a plurality of strands 2 made of filaments 3 are bonded together in close side by side parallel relationship with a film forming adhesive material 4 so that the strands are incapable of independent longitudinal movement, a pressure sensitive adhesive 5 on one face of the strip 1 and a release coating 6 e.g. wax, silicone resin which does not adhere to the adhesive. The strands 2 may comprise 1 to 3 filaments 3 twisted or cabled together which may be of rayon, cellulose acetate or triacetate nylon, polyesters, polyolefins, acrylics or glass. The film forming adhesive 4 may be a cellulose ester or ether, gelatin, casein or a resin such as nylon, vinyls, acrylics, polyesters or natural or synthetic rubber latices. A number of suitable commercial pressure sensitive adhesives are specified. The tape may be made by contacting the backing strip 1 with a wick 9 which applies the release coating 5, drying said coating, applying the adhesive coating to the other face by means of a roller 12, drying the adhesive coating and preferably applying a further coating(s) of adhesive by means of a roller 17 and drying the coating(s). In an embodiment a wax rod 25 is used to apply the release coating and a further release coating may be similarly applied immediately before the take up roll 8. The rolled tape may also be coated with wax so as to provide a release coating on the 'edges' of the tape.
Patent GB-1532699-A (GB)
Title: Low-velocity electron excited fluorescent display device
IPC: C09K11/08
Filed: 1976-01-26
Abstract: 1532699 Luminescent materials and uses thereof DAI NIPPON TORYO CO Ltd 26 Jan 1976 [7 June 1975] 2878/76 Heading C4S [Also in Division H1] Flow velocity (a few tens to less than 100 volts) electron excited fluorescent display device comprises a vacuum tube with an anode plate having a fluorescent screen comprising a gallate based phosphor of formula where 0À6#A#1À2; 0#B#5Î10<SP>-2</SP> and 0 #x #1À0 the Mn being divalent (e.g. ZnO.Ga 2 O 3  and MgO.Ga 2 O 3 ). Unactivated, the emission is blue, otherwise it is green blue to green. The anode plate (11) in the diode and triode devices of Figs. 1 and 2 (not shown) is supported by a ceramic plate (13), and there may be one, two or more cathodes. Phosphor preparations and sedimentation procedures are detailed, and vacuum pressures, and phosphor coverages exemplified. Mesh grid (15) diverges the electrons from the line cathode and should be fine to reduce light loss (dimensions are specified). Plate (11) may comprise selectively excited partitions of character or numeral form, or may be dots or lines coated with different phosphors for multi-colour display. Emissions are discussed w.r.t. Fig. 4 (not shown) and C.I.E. coordinates w.r.t. Fig 5 (not shown). Detailed examples are included and pocket calculator and measuring instrument applications are exemplified.
Patent GB-1466558-A (GB)
Title: Additives for functional fluids
IPC: C10N40/08
Filed: 1975-01-23
Abstract: 1466558 Benzotriazole, benzimidazole, naphthotriazole and naphthimidazole derivatives CIBA-GEIGY AG 7 Jan 1976 [23 Jan 1975] 2929/75 Heading C2C [Also in Division C7] Novel compounds of Formula I in which X is N or CR wherein R is H or C 1 -C 4  alkyl; A is a benzene or naphthalene radical, unsubstituted or substituted by one or more C 1 -C 12  alkyl, or C 7 -C 9  aralkyl radicals; R 1  and R 2  are independently either a radical of formula R 3 O[(alkylene)O] x (alkylene)- wherein R 3  is H or C 1 -C 20  alkyl, "alkylene" is straight- or branched-chain C 2  or C 3  alkylene and x is 0, 1, 2, 3, or 4, or are C 2 -C 20  alkenyl or C 2 -C 5  cyanoalkyl; or R 1  is as defined above and R 2  is H, C 1 -C 20  alkyl, C 6 -C 10  aryl, C 5 -C 12  cycloalkyl, C 7 -C 9  aralkyl, a heterocyclic radical or a radical of formula are prepared by reacting a compound of formula with formaldehyde and an amine of formula R 1 -NH-R 2 . They are used as corrosion inhibitors or metal passivators in a wide range of functional fluids.