baber/WOPTO huggingface dataset:
Patent GB-442450-A (GB)
Title: Refrigerant pump
IPC: F25B31/00
Filed: 1934-08-13
Abstract: 442,450. Refrigerating - compressors. KOPLAR, S. E., Pershing Boulevard, Chicago, U.S.A. Aug. 13, 1934, No. 23348. [Class 8 (i)] A refrigerating- pump comprises a series of pairs of connected pistons 33, 47 reciprocated bv the rotation of their cylinder blocks 24 and receiving and discharging refrigerant through arcuate slots in the heads of the casing enclosing the cylinder blocks and providing an oil chamber 23 between them. To relieve pressure in those cylinders where the pistons are on the compression stroke when the pump is stopped, but are not in communication with the arcuate outlet slot, an auxiliary slot 99, Fig. 8, is provided communicating with the outlet slot 60 by a passage controlled by a spring-pressed valve 103 which allows passage of excess oil during stoppage and remains open, giving a larger delivery passage when the pump is working at low pressure. The pump outlets are connected by pipes 95, 96 to an unloader C from which oil passes to the chamber 23 in the pump casing and refrigerant to a separator B from which oil is fed to the unloader C and refrigerant to the pump.
Patent GB-777916-A (GB)
Title: Improvements in and relating to control apparatus for dirigible craft
IPC: G05D1/00
Filed: 1953-06-19
Abstract: 777,916. Automatic control systems for dirigible craft. BOULY, H. G. (Minneapolis- Honeywell Regulator Co). June 19, 1953, No. 23356/55. Divided out of 777,915. Class 38 (4). Apparatus for controlling the attitude of a dirigible craft about one of its axes comprises a servomotor 10 operated in response to the unbalance in a parallel summing direct voltage balanceable network which includes a D.C. signal generator 40 which generates a signal varying with the rate of change of altitude of the craft about one of its axes and is connected to the summing point 60 of the balanceable network through a passive lag network to apply to the summing point a signal which is a combination of rate and integrated rate components. The balanceable electrical network includes the signal generator 40 responding to the rate of change of attitude about, say, the pitch axis, a manually controlled compensating signal generator 50, a signal generator 30 responsive to change in altitude of the craft about the axis and a signal generator 70 responsive to movements of the output member 16 of the servomotor. Each of the signal generators comprises a potentiometer winding a with an earthed centre tap and a slider b connected to the network. The net signal at the point 60 is applied through a direct current amplifier 62 to the input member 14. The generator 40 is coupled to a rate gyroscope 41 and is connected to the summing point by a lagged network comprising resistors 42, 44, a condenser 46, and a summing resistor 48. The generator 50 has a direct connection to the summing-point 60 through a resistor 32 and also a connection through a modifying network comprising a resistor 54, condensers 52, 56 and a summing resistor 58. A switch may be provided to cut out the generator 30 and also the direction connection of the generator 50 to the summing point so that the system forms a so-called " lagged rate autopilot." The generator 50 generates signals during movement of a manually-operated member 12 also controlling the hydraulic servomotor 10 so as to prevent the generator 40 from opposing movements of the output member 16 of the servomotor responsive to movements of the manual member 12. The hydraulic servomotor 10 is described in Specification 777,915 and has a manually controlled section 18 and an automatically controlled section 20, each of which is operative to control the output member 16.
Patent GB-1528954-A (GB)
Title: Digital attenuator
IPC: G06F5/00
Filed: 1975-05-29
Abstract: 1528954 Digital attenuator POST OFFICE 27 May 1976 [29 May 1975] 23457/75 Heading H4R In a digital attenuator for providing a predetermined attenuation to a companded p.c.m. signal the input signal is fed into a shift register B1, B2, B3, B4, through which the bits are serially shifted, with the original bit sequence sensed and the logical state of at least one bit modified to provide a signal at the shift register output which represents a predetermined fraction of the value represented by the shift register output. As described the input signal is a p.c.m. signal companded according to the A-law and according to the particular segment in which the signal lies at any instant, as determined by the logical state of the second, third and fourth digits of the coded signal, the first digit being a sign digit, the interconnections of the shift register are modified, and/or an extra stage B5 inserted at the register input, to provide an input/output correspondence as indicated in table 1 (not shown).
Patent GB-240009-A (GB)
Title: Improvements in and relating to automatic feeding devices for cut tobacco and other material of a similar character
IPC: A24C1/02
Filed: 1924-10-06
Abstract: 240,009. Bargeboer, A. Oct. 6, 1924. Cigar-making machines.- feeding devices for tobacco and like material comprise a hopper 5, Fig. 2, leading to a wide, shallow chamber 8 through which the tobacco or the like is fed by reciprocating. pusher-bars 7 and by groups of reciprocating bars 27, 28, 31 and 32. As shown applied to cigarillo-making machines tobacco fed forward on a travelling belt is cut by a reciprocating knife into portions which are delivered into the hopper 5. The pusher-bars are spring loaded and are mounted side by side in a flat casing 13 reciprocated by link-work engaging a rod 16. The tobacco is pushed by the bars 7 into engagement with the groups of bars 27, 28, 31 and 32 shown in section in Fig. 4. The bars 27, 28 have their inner edges serrated and are arranged alternately with the plain bars 31, 32 the arrangement further being such that a serrated bar is arranged immediately opposite to a plain bar. Each of the groups of bars is reciprocated in a vertical plane, the groups 27, 28 being also reciprocated longitudinally, themotions of the bars being such that the tobacco is alternately held by the plain and impelled forward by the serrated bars. The bars 31, 32 may also be reciprocated longitudinally in which case they are formed with serrated edges. The casing 13, with the bars 7, may be displaced laterally half the width of a bar after each stroke or a given number of strokes, the outside bars of the system in these circumstances being half the normal width, the total width of the system being greater than that of the chamber 8 by half the width of a bar. The pusher-bars 7, instead of being provided with springs 14, may be pivotally connected together in pairs at their ends within the casing by triangular plates, the plates themselves being linked together in pairs by larger plates which are in turn linked by a still larger plate pivoted at its centre to the casing 13. Specification 234,692 is referred to.
Patent GB-517849-A (GB)
Title: Improvements in or relating to vapour electric converters
IPC: H01J17/24
Filed: 1938-08-11
Abstract: 517,849. Metal-vapour converters. GENERAL ELECTRIC CO., Ltd., and GALLIZIA, E. Aug. 11, 1938, No. 23705. [Class 39 (i)] A vapour converter has within the converter vessel a metallic surface which is knurled, ridged or similarly treated to adapt it to the adsorption of undesired gases. Part or the whole of the inner surface of the vessel is so treated and in the case of a vessel which is fabricated from steel plates all or any of the plates may be deeply knurled. According to the Provisional Specification, a sheet of metal gauze or a grid may be provided adjacent to or may be attached to the wall of the vessel.
Patent GB-929776-A (GB)
Title: Fuel and air supply system
IPC: F02M69/22
Filed: 1960-02-18
Abstract: 929,776. Fuel and air supply systems. ACF INDUSTRIES Inc. Feb. 18, 1960 [April 6, 1959], No. 23794/62. Divided out of 929,775. Class 7(3). A fuel and air supply system for an internalcombustion engine includes a datum pressure system, means for holding pressure in the datum system and means responsive to acceleration of the engine for byepassing the pressure-holding means to reduce the pressure in the datum system. The system is similar to that described in Specification 929,775. Specification 830,305 also is referred to.
Patent GB-753231-A (GB)
Title: Centrifugal compressors
IPC: F04D29/44
Filed: 1953-08-29
Abstract: 753,231. Centrifugal compressors. AUSTIN MOTOR CO. Ltd., and DANGERFIELD, K. J. Aug. 17, 1954 [Aug. 29, 1953], No. 23919/53. Class 110(1) In a centrifugal compressor, the diffuser passages progressively increase in cross-sectional area from the inlet end with progressive reduction in the ratio of the major to the minor axis of the cross-section of the passages. Figs. 7 and 8 show developed views, in transaxial and axial planes respectively, of a diffuser passage 12 and the associated return passage 13, which extend between the first and second stages 10, 16, Fig. 2, of a centrifugal compressor. From the inlet end A at which the passage 12 is of elongated rectangular cross-section, the axial width increases, while the transaxial width remains constant, until at a point B the passage is of square cross-section. Both dimensions increase equally from the point B to the outlet B<SP>1</SP> of the passage 12 and remain constant from the outlet B<SP>1</SP> to a point C in the return passage 13. From the point C to the outlet D of the passage 13, the axial width decreases, the sum of the areas of the outlets D of the several return passages 13 being equal to the area of inlet eye of the following impeller. In a modification, the dimensions may remain constant from the point B to the outlet B<SP>1</SP>. In a further modification, the part AB of the passage 12 extend's up to the outlet of the passage 12, the part BB<SP>1</SP> being omitted. The Provisional Specification states that the diffuser may be provided with separately detachable pieces whereby the rate and variation of rate of diffusion may be controlled.
Patent GB-1039631-A (GB)
Title: Improvements in or relating to the manufacture of wool rugs
IPC: D05C15/06
Filed: 1964-06-10
Abstract: 1,039,631. Sewing, tufted fabrics. J. KNIGHT. June 3, 1965 [June 10, 1964], No. 23997/64. Heading D1G and D1K. A canvas sheet is tufted by forcing folded lengths of yarn between successive threads and cutting the projecting loops so that each inserted length is held in place by friction and leaves four upstanding ends. The tufts may be anchored in position by the application of adhesive, such as rubber latex, to the back of the canvas. A tool for effecting the tufting comprises a shank A having at its respective ends a hook B closable by a latch E, and a handle C. The shank is cranked intermediately as at D, and is provided thereat with a blade G having a cutting edge G set slightly back with reference to the hook B. In use, the shank is thrust under a thread until a stop N engages the preceding thread, a cut length of yarn is folded upon the hook B, and the shank is withdrawn to position the free ends and the looped end of the inserted length equidistant from the canvas. The shank is then thrust forwardly, whereby the looped end opens the latch E and slides over the shank into engagement with the edge G<SP>1</SP> to be severed thereat. A finger guard 0 for the blade G also serves to guide the looped end into engagement with the latter. The latch may be omitted.
Patent GB-1503044-A (GB)
Title: Furniture frame
IPC: F16B12/24
Filed: 1976-06-10
Abstract: 1503044 Furniture frame R H FLOTOTTO 10 June 1976 [10 June 1975] 23999/76 Heading F2M  A knock-down sectional furniture frame incorporates two frame members and a coupling wherein the end of one member 2 abuts the side of the other member 1 and the coupling comprises a metal fitting 7 which fits into the angle between the members and is rigidly fixed to a connector element 8, insertable into transverse hole 6 in member 2, a connector piece 4, preferably a bolt, insertable through aligned bores 3, 5 of the two members and engageable with the connector element 8 and a fixing bolt 11 insertable into transverse bore 10 and engageable with a threaded hole in the arm 16 of the metal fitting. For fixing a third frame member two holes may be provided, longitudinally spaced, in connector element 8 and arm 16 of the metal fitting and in the end of member 2 so that the bolts 4, 11 do not interfere, the holes in the adjacent sides of member 1 being also offset longitudinally as indicated in Fig. 2 (not shown).
Patent GB-694929-A (GB)
Title: Improvements in the preparation of derivatives of 1:4-diamino-benzene-n-sulphonic acid
Inventor: LANTZ ROBERT LAZARE
Filed: 1951-10-16
Abstract: A process for preparing water-soluble salts of the 1 : 4 - diaminobenzene - N4 - sulphonic acids which have the amino group in the 1-position of benzene nucleus substituted with an aryl radical comprises heating in the presence of water an alkali metal bisulphite and a substance to elevate the pH of the mixture with a 4-nitroaminobenzene, the amino group of which is substituted with an aryl radical.  The substance to raise the pH of the mixture may be selected from the caustic alkalies, alkali metal carbonates and alkali metal sulphites.  A solvent such as alcohol, miscible with water, may be present.  In the example N-(4-nitrophenyl)-amino benzene, sodium bisulphite, sodium sulphite, water and alcohol are heated in a closed apparatus.  The alcohol is distilled off after adding sodium carbonate and water and the product, sodium N1-phenyl-1 : 4-diamino-benzene-N4-sulphonate crystallizes out after filtration and cooling.  The products can be used in the dyestuffs, dyeing and printing industries.  Known processes for preparing alkali metal salts of primary arylamines, the amino groups of which are substituted with a sulphonic group by reacting a mixture of sodium sulphite and sodium bisulphite with the corresponding aromatic nitro derivatives and for reacting the corresponding nitro derivatives which carry an amino group either unsubstituted or substituted by a hydrocarbon residue with bisulphite alone are referred to.
Patent GB-1353778-A (GB)
Title: Method of marking and subsequently localizing identifying and recording physical objects and an electronic marking device for use in carrying out the method
IPC: G08B13/24
Filed: 1971-04-19
Abstract: 1353778 Transponders; inductive signalling SVEJSECENTRALEN 19 April 1971 [20 Feb 1970] 24081/71 Headings H4L and H4U In a method of marking and subsequently localizing, identifying and recording individual objects within a group of such objects by marking circuits, each marking circuit comprises a circuit for receiving energy from a surrounding electromagnetic field and a transmitter emitting electromagnetic signals; the receiver and transmitter are so coupled to each other that the received energy produces the emission; the emitted signals are picked up, amplified and processed in further apparatus; and each marking circuit further comprises at least one component designed to be changed in a predetermined manner or destroyed by the current induced when the circuit is subjected to an electromagnetic field of intensity exceeding a predetermined magnitude. The method is characterized by the steps of providing each object with a predetermined set, common to the group of objects as a whole, of mutually independent marking circuits, each individual marking circuit being designed to radiate its own characteristic electromagnetic signals only when subjected to electromagnetic searching fields of specific, characteristic input signals to which the marker receiver has been selectively tuned, subsequently coding each object separately by subjecting it to an electromagnetic coding field supplying a characteristic sub-combination of input signals specific to the object in question and having such a high intensity that a corresponding subcombination of marking circuits sensitive to those signals is changed or made permanently inoperative; and identifying and recording the individual object by an electromagnetic searching field supplying input signals corresponding to the total combination of input signals for the common set of marking circuit whereby the intact marking circuits are caused to emit electromagnetic signals in a predetermined characteristic sub-combination which identifies the object in question. In one embodiment a marking circuit has an internal battery is switched on when a coil-induced and rectified voltage actuates a transistor to thereby energize a radiating transistorized oscillator, Fig. 17 (not shown); an alternative marking circuit needs no battery, Fig. 18 (not shown).
Patent GB-1261658-A (GB)
Title: Improvements in and relating to chairs
Inventor: DRABERT FRITZ
IPC: A47C1/023
Filed: 1970-05-19
Abstract: 1,261,658. Seat adjustment. DRABERT SÍHNE. May 19, 1970, No.24105/70. Heading A4J. The seat part 5 of a chair is adjustable to vary the distance between the front and the backrest. Preferably a gas spring 11 is used to provide a forward bias and a locking handle 13 is then necessary.
Patent GB-1353546-A (GB)
Title: Polymer/polyethylenimine -substituted or unsubstituted- adhesive  compositions
IPC: C09J157/00
Filed: 1971-04-19
Abstract: 1353546 Plywood DOW CHEMICAL CO 19 April 1971 [19 March 1970] 24209/71 Heading B5L [Also in Divisions C3 C4 and B2] A plywood panel is made by coating both sides of a Southern Pine wood panel with an adhesive composition consisting of a styrene/ acrylic acid copolymer, polyethylenimine and water, and pressing a similar wood panel against both coated sides and curing at 300‹ F., for 7¢ min. at 175 p.s.i.
Patent GB-730304-A (GB)
Title: Improvements in side delivery rakes and/or swath turners
Inventor: BAMFORD RUPERT CYRIL
IPC: A01D78/00
Filed: 1951-10-13
Abstract: The subject-matter of this Specification is identical with that of Specification 730,281, but the claims are confined to the displaceable supporting-wheel illustrated therein.  Specification 707,404 also is referred to.
Patent GB-1294605-A (GB)
Title: Circuit arrangement for deriving a direct-current voltage measurable from a reference potential from an alternating-current voltage
IPC: G01R19/22
Filed: 1970-05-20
Abstract: 1294605 Measuring mean voltage LICENTIA PATENT-VERWALTUNGS GmbH 20 May 1970 [22 May 1969] 24327/70 Heading G1U In order to produce a D.C. potential with respect to neutral, MPL, proportional to the halfwave mean potential U3 across a load 3 connected to neutral via thyristors 1, 2, controlled so that each conducts for the same fraction of a half cycle, the load is shunted by a rectifying potential divider, 4, 5, 9, 8, the middle point of which is connected to an RC circuit 6, 7, having a large time constant relative to the main supply P frequency, and a low D.C. resistance relative to the potential divider resistors 5, 9, which are equal to each other. In operation during positive half cycles of the supply P the mean current through resistor 6 is proportional to the half-cycle mean of the supply voltage, irrespective of whether thyristor 2 conducts or not. During negative half cycles of the supply, for those periods that thyristor 1 is not conducting the mean current through resistor 6 is proportional to the mean voltage U2 across the thyristor (which voltage will equal the supply voltage), and for those periods that thyristor 1 is conducting the mean current through resistor 6 is zero. Thus, in positive half cycles of the supply the potential across resistor 6 and capacitor 7 rises towards the mean supply voltage, whilst for those fractions of negative half cycles of the supply during which no load current flows, the potential across resistor 6 falls towards the negative mean supply voltage, so that the net voltage across resistor 6 represents the half-wave mean of the voltage applied to the load 3.
Patent GB-1141474-A (GB)
Title: Improvements in current collecting element
IPC: H01B1/00
Filed: 1966-06-01
Abstract: 1,141,474. Switch contacts. GENERAL ELECTRIC CO. 1 June, 1966 [21 June, 1965], No. 24343/66. Heading H1N. A composite contact has an annular rim 17 of low conductivity, e.g. copper or silver, and a core of higher resistance, low friction material, e.g. graphite, silver/graphite mixture or conductive molybdenum disulphide, the ratio of the area of the core to the rim being in the range of 10: 1 to 1: 3. The use of the contact as an electromagnetically operated abutting contact, and as a fixed sliding contact co-operating with contact segments in a rotating timing disc, are described (Figs. 4, 5, not shown).
Patent GB-223386-A (GB)
Title: Improvements in motor road vehicles tool boxes
IPC: B60R9/02
Filed: 1923-10-01
Abstract: 223,386. Windover, W. L. S, Oct. 1, 1823. Luggage, parcel, and like holders.- A tool-box A, positioned in a recess in or below the platform step B of a motor road vehicle is carried bv two brackets C screwed to the box and to the underside of the step, and a lid D is provided having a deep sleeve F arranged completely to encircle, the box body to shield it from rain, a bead G being arranged around the edge of the lid in such a way as to rest also on the step. The lid is held by locks E or fastenings and a shield H is provided in front of the box to protect it from mud.
Patent GB-358201-A (GB)
Title: Improvements relating to arc extinguishing devices for electric circuit interrupters
IPC: H01H9/44
Filed: 1930-08-14
Abstract: 358,201. Arc-rupturing in switches. HAWORTH, A. N., 1, Shirley Avenue, Stretford, Manchester, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Aug. 14, 1930, No. 24398. [Class 38 (v).] A " drion" structure comprises a series of pairs of plates 4 of magnetic material covered by, or moulded between, layers 5 of asbestos or other refractory insulating-material in the manner used in connection with transformer core lamination. Each plate 4 is assembled with a co-operating filling plate 6 shaped so as to provide a V-notch 7 and narrow channel 8, the channels in adjacent pairs being oppositely-directed so that, as the arc, after rising to the apex of the V-notch 7, enters the channels 8, it is made to describe a continuouslylengthening zig-zag path. Insulating endplates 11, 12 are provided. The magnetic plates are arranged to engage the cheeks of a blow-out magnet, when such is employed, Fig. 5 (not shown). In another form, Fig. 6 (not shown), plates 4, with or without plates 6, are interleaved with insulating plates each having a notch and a saw-cut extending therefrom, the saw-cuts in adjacent insulating plates being oppositely-directed and the slant edge of each plate 4 being aligned, with that of an adjacent insulating plate. To prevent the are horns 41 from burning, Fig. 7, their ends are apertured at 45 and slotted at 46 so that the arc terminals, on arriving at the slots 46, will not cross same but move as shown by the dotted arrows. Magnetic backing plates 47, separated from the horns 41 by insulating protective plates, are correspondingly apertured and slotted, and also recessed at 48, the edges of the plates 47 being bent round, or extended beyond, the arc horns.
Patent GB-998832-A (GB)
Title: Apparatus for manufacturing footwear by injection moulding
IPC: B29D35/00
Filed: 1962-05-07
Abstract: 998,832. Injection moulding footwear. H. LUDWIG, [trading as DEUTSCHE SPEZIALMASCHINEN CO. H. LUDWIG KOMM.-GES.]. May 7, 1962 [May 8, 1961; June 5, 1961], No. 24406/64. Divided out of 982,797. Heading B5A. Apparatus for injection moulding a plastics sole on to an upper mounted on a last comprises two or more lasts 13, 141 mounted on a rotary head 142 and displaceable vertically to co-operate with a stationary mould 12. The rotary head 142 is mounted on a carrier 149 which is displaced vertically by means of a piston 148. When the carrier 149 is raised the axis 145 of rotation of the head 142 is moved to a horizontal position (Fig. 5, not shown). The head 142 is then rotated by a pressure operated motor 155. Each last has a separate heel portion which is movable when the last is in position III (Fig. 3) by means of a piston 156 mounted in the carrier 149.