baber/WOPTO huggingface dataset:
Patent GB-641020-A (GB)
Title: Improvements in and relating to high tension windings for transformers
IPC: H01F27/32
Filed: 1947-12-23
Abstract: 641,020. Transformers. AKT.-GES. BROWN, BOVERI, & CIE. Dec. 23, 1947, No. 34044. Convention date, Nov. 8, 1938. [Class 38 (ii)] A transformer H.T. winding has insulation on all sides such that the winding is enclosed in two insulating cylinders provided with reinforced flanges embracing the end faces of the winding so that an annular gap is formed between the flanges for the inflow and outflow of a coolant. The H.T. winding is wound in two parts b1, b2 arranged concentrically so that an annular gap c exists between them. Two insulating cylinders el, e2 are arranged around the windings, the ends of the cylinders forming flanges f1, f2, f3, f4, thus completely surrounding the winding except for the annular spaces c1 c2 between the flanges which spaces form the inlet and outlet for the coolant occupying the space c and the radial spaces x between the coils of the winding. g1 to g4 are metal rings or of metallized insulation forming a protective device for the transformer in known manner, The L.T. winding is also formed in two parts d1, d2 which are concentric with the H.T. winding. In an embodiment wherein the H.T. winding is the outer one, the outer surface of the insulating cylinder e2 is metallized to reduce the electrostatic stresses so that the distance between the winding and the transformer casing may be reduced.
Patent GB-1395625-A (GB)
Title: Reciprocating piston internal combustion engine
IPC: F16C9/02
Filed: 1972-07-20
Abstract: 1395625 I C engine crank-cases MASCHINENFABRIK AUGSBURGNURNBERG AG 20 July 1972 [22 July 1971]  34072/72 Heading FIB [Also in Division F2]  The generally U-shaped in cross-section crankcase portions have a crank-shaft 3 supported against bearing surfaces in the bars of the portions by bearing caps 6 and each cap is connected to the depending arms 4, 5 of the respective portion by screws 13, 14 which extend perpendicular to the crank-shaft axis. The screws 13, 14 extend into the cap 6 immediately adjacent and substantially parallel to the plane 9 between the cap and the bar of the portion and apply tensioning forces to the cap. Pairs of screws (13, 13' and 14, 14'), Fig. 2 (not shown), extend one on each side of the screws 7, 8 securing the cap 6 to the bar of the portion 2. The screws 13, 14 have axial bores 17, 18 aso as to be yieldable to transverse forces. The portions 2 are prestressed by spacer members 21 and screws 22, 23 under tension. The caps 6 may be additionally connected to the arms 4, 5 by tensioning screws extending approximately to the centres of the caps in the regions of the abutting surfaces 19, 20 of the caps and arms. Brass bearing shells 10 surround the crank-shaft journals.
Patent GB-854505-A (GB)
Title: Improvements in control mechanisms for combine harvesters
IPC: B60P1/02
Filed: 1956-11-08
Abstract: 854,505. Valves. RANSOMES SIMS & JEFFERIES Ltd., and JARVIS, J. S. Nov. 8, 1957 [Nov. 8, 1956], No. 34225/56. Class 135. A valve 1 controlling an hydraulic ram which actuates a variable-speed pulley arrangement as e.g. in Specification 840,859 to control the overland speed of a combine harvester is adapted to be actuated by a hand lever 3 mounted on the steering column or, in the speed reducing direction only, by a pedal 20. The lever 3 rotates a shaft 4 to the lower end of which is fixed an arm 7 connected through a link 9 and lever 10 with the valve stem 2. The lever 10 is pivoted at 11 on a block 12 which is loaded by springs 13, 14 so as to provide a self-centring action for the lever 3, the arrangement being such that when a desired vehicle speed has been attained the lever may be released so that it returns to a neutral position. The pedal is connected by a link 17 to an arm 8 which is loosely mounted on the shaft 4 and carries an abutment 21 for engagement with the arm 7. A pedal return spring 22 is fitted.
Patent GB-778689-A (GB)
Title: Improvements in or relating to bellows
IPC: F16J3/04
Filed: 1953-12-09
Abstract: 778,689. Making bellows. YOWELL, J. W., and MINER, D. B. Dec. 9, 1953 [Dec. 26, 1952], No. 34326/53. Classes 83 (2) and 83 (4). Stamping; corrugating.-A method of making an overpressure-resistant metal bellows comprises subjecting the exterior of the corrugated walls of the conventional bellows to sufficient fluid pressure to permanently curve inwardly the flat portions of the walls and cause said permanently curved portions to constitute continuations of the curves of the inner semicircular portions of the corrugations. A metal bellows 10 comprising a corrugated cylindrical wall 13 and a conical end wall 11 is placed on a mandrel 20 and rollers 21 are advanced radially to flatten the outer wall portions 15 and so form narrow cylindrical bands 18. The mandrel is removed and the open end of the bellows is soldered to a mounting ring 22 which is clamped to the mouth of a container 23. A cam-operated rod 25 extends into the bellows and engages the end wall 11 thereof. Pressure fluid is introduced into the container through a pipe 29 and as the pressure in the container increases a cam 27 slowly rotates and raises the rod 25 as the bellows contract and the flat and the inner semi-circular wall portions 14 and 16 respectively of the corrugations are formed into shapes of arcuate cross-section. Specification 778,688, [Group XXVI], is referred to.
Patent GB-1476819-A (GB)
Title: Tape transport system of video tape recorder with longi tudinal recording
IPC: G11B5/48
Filed: 1975-08-19
Abstract: 1476819 Recording television signals I A KRYLTSOV 19 Aug 1975 34389/75 Heading G5R A moving magnetic tape 3 runs round at least part of the circumference of a rotating drum 1 having at least one slot 22 parallel to its axis, one or more magnetic heads 20 being driven to and fro along the or each slot 22 by the drum drive motor 8, e.g. by means of a cam 25, Fig. 2, or 37, Fig. 3, driven either continuously as shown or intermittently through a Geneva mechanism, Figs. 5 and 6 (not shown).
Patent GB-1438036-A (GB)
Title: Automatic pilot
IPC: G05D1/02
Filed: 1973-07-19
Abstract: 1438036 Automatic control of course R O CHAPMAN 19 July 1973 [27 July 1972] 34415/73 Heading G3R An autopilot system (e.g. marine) includes a multi-vibrator associated with the steering mechanism arranged so that corrections cannot be made at a greater frequency than that of the multivibrator. The object is to reduce wear of the steering gear. Course error is determined by a magnetic compass whose card 24 has an arcuate slot 25 through which a lamp can illuminate a pair of photo-resistors R1, R2 whose azimuth position is set at the desired course. Thus deviation from a middle value of a voltage VM from the junction of R1, R2 represents course error. This is applied to a "characteristic controller" 7 which has two paths, one directly via R7 and the other via a dead band circuit in which VM switches one or the other of transistors Q1, Q2 at upper or lower threshold values respectively, thereby connecting the lower end of a potentiometer RV2 to a supply VCC or to earth. The setting of RV2 determines the width of the dead band and is adjusted to suit weather conditions. The output of 7 is taken from potentiometer RV3 connected as shown, the setting of this determining the maximum value of rudder control voltage VC and hence maximum rudder movement. Switches 27 ... 29 apply fixed voltages for manual control. Voltage VC is compared with a rudder position voltage from RV4, Fig. 2A, biased by potential divider R9 ... R11 to produce a further dead band effect, in differential amplifiers A3, A4 whose outputs are gated to rudder motor relays 21, 22 when a flipflop F1 is placed in a set condition by a signal from A3 or A4 via gate G6. F1 is reset by the multi-vibrator 20 which operates at 2Hz and this arrangement is to prevent successive alternate operations at greater than this frequency. The error voltage V0 is also applied to threshold circuits A1, A2, R4 ... R6, Fig. 2 to operate "error" and "on course" indicator lamps 16 ... 18; an alarm 26 is given if an error persists for a prescribed time. If the error is so great that neither photoresistor is illuminated V0 is maintained at correct polarity by a positive feedback circuit 6 being gated in by a switching transistor Q3.
Patent GB-1403989-A (GB)
Title: Electrical connector
IPC: H01R43/22
Filed: 1972-07-24
Abstract: 1403989 Two part couplings BOWTHORPEHELLERMANN Ltd 24 July 1972 [29 July 1971] 34489/72 Addition to 1371916 Heading H2E The connector is generally similar to that described in Specifications 1,371,916 and 1,371,917, but the shoulder on the contacts is undercut (55) to enhance gripping by the fingers.
Patent GB-1122746-A (GB)
Title: Conveyors for cylindrical objects
Inventor: STILES JOHN BARRINGTON
IPC: B05B13/02
Filed: 1966-08-02
Abstract: 1,122,746. Roller conveyers. METCO Ltd. 25 July, 1967 [2 Aug., 1966], No. 34525/66. Heading B8A. A conveyer comprises a number of drivable rollers for contacting, rotating and conveying a cylindrical object, the longitudinal axis of each roller being tiltable by rotating that axis through segments of a circle about a line which is formed by a diameter of the roller extended in a straight line through the point of contact with the surface of the object by way of a radius of the object to the centre of the object. As shown, roller carriers L are pivoted at M to mountings J, N, and may be tilted about lines ST, UT respectively by bars K, each of which connects a group of two or more rollers. The rollers are driven by a belt R. Fig. 8 (not shown) indicates how the rollers may be adjusted to suit differing diameters of cylindrical objects. Other drive means are specified and some of the rollers may be idlers. The rollers may be of rubber, plastic or metal and may be fitted with pneumatic or other tyres. An object, during its movement along the conveyer, may operate sensing means to control the tilting of the rollers or for starting treatment apparatus for the object. The tilting may be used to control the speed of the object or to stop it or reverse its direction. The treatment of gas cylinders is specified.
Patent GB-939774-A (GB)
IPC: E21B10/24
Filed: 1961-09-26
Abstract: 939,774. Lubricators &c. HUGHES TOOL CO. Sept. 26, 1961, No. 34533/61. Class 12 (3). [Also in Group XXI] A bearing assembly for earth boring drills of the rolling cutter type wherein lubrication means comprises a.chamber 25 provided in a bit leg 3, counterbored, 30, at its open end to receive plug 31 which may be secured by pin 32 which serves as a breather. The plug 31 is reduced externally at its lower end 34 and a peripheral groove 35 is formed therein. The annular space between the plug 31 and the wall of the counterbore 30 receives the end of a sheath 36 of impervious flexible material, the sheath being held in place by an elastic ring 37 which also forms a seal between chamber 25 and the exterior of bit head 2. The lower end of the chamber 25 communicates with a cut-away portion in pin 16, the pin being further contoured or drilled to provide lubricant passages to selected points in the assembly. When the plug 31 is installed in the chamber 25, the assembly, having been prior filled with lubricant 26, the sheath 36 assumes the configuration shown and forms a flexible barrier between the lubricant and the space in the upper portion of bore 33. This construction permits ebb and flow of lubricant throughout the bearings 8 and 9 and to and from chamber 25 upon any movement of cutter 7 relative to shaft 4, giving rise to a volumetric charge within the bearing. An annular frusto-conical sealring 20 forms a seal between surface 22 at the base of the cutter 7 and shoulder 21 at the base of the shaft 4 to retain the lubricant and prevent extraneous matter from entering the bearing assembly.
Patent GB-1146369-A (GB)
Title: Improvements in or relating to electrical capacitors
IPC: H01G9/12
Filed: 1967-07-28
Abstract: 1,146,369. Electrolytic capacitors. SIEMENS A.G. 28 July, 1967 [29 July, 1966; 5 July, 1967], No. 34754/67. Heading H1M. A pressure-release valve for a capacitor particularly an electrolytic capacitor comprises an aperture in the capacitor housing covered by a sealing element controlled by a spring return element. As shown in Fig. 1, spring 1 fixed in slots 2 urges hemispherical resilient sealing member 3 against aperture 4. Spring 1 may be plate shaped (Fig. 2, not shown) or star-shaped (Fig. 3, not shown) and may be perforated (Fig. 4, not shown). It may be fixed at one end only with the sealing member at the opposite end (Fig. 7, not shown) and in this case it may be curved (Fig. 8, not shown). In Fig. 9, the sealing element is a layer 3 of e.g. rubber on the spring 1 which may be a plate of resin-bonded paper. The sealing element bears on a raised part 13 surrounding aperture 4, the spring is fixed by turned-over edge 2 and baffles 11 prevent escape of electrolyte or impregnating fluid. Aperture 8 allows escape of the gases. The sealing element may alternatively be a surface layer or a disc of synthetic material which layer has been treated with a softener. In a modified arrangement (Fig. 10, not shown) the sealing member is a portion upstanding from the e.g. aluminium spring member and urged against a resilient sealing plate.
Patent GB-397736-A (GB)
Title: Improvements in and relating to twin fountain pens
IPC: B43K5/16
Filed: 1932-12-09
Abstract: 397,736. Fountain pens. CHELAZZI, M., 2, Piazza Verdi, and FRULLI, D., 8A, Via della Liberta, both in Genoa, Italy. Dec. 9, 1932, No. 35024. Convention date, Dec. 9,1931. [Class 146 (iii).] A fountain pen is provided with two units, each comprising a nib section C, Fig. 1, a collapsable sac D for self-filling purposes, and a rigid sheath E for the sac, and the sheaths E are provided with oppositely - directed helical grooves co-operating with corresponding grooves crossing one another in the outer shell, so that by rotating the shell relatively to the units one is projected and the other retracted. The shell may be formed of two relatively rotatable parts A, Beach provided with the helical grooves and arranged to engage with the grooves F, G on each sheath E, the grooves F, G being oppositely directed and arranged at opposite ends of the two sheaths. The sheaths are of semicircular cross section so as to prevent rotation with the shell parts. Rotation of the shell parts in opposite directions results in the reciprocation of the pen units. In the form shown in Fig. 4, the shell is formed in one section with the crossing grooves and the two units are formed with one set of grooves each. The units are separated by a strip J actuated by a rotatable operating-head H in the rear end of the barrel.
Patent GB-430089-A (GB)
Title: Improvements in measuring instruments equipped with electrically-controlled follow-up relay devices
IPC: G01R13/00
Filed: 1933-12-13
Abstract: 430,089. Control of motors. ELECTROFLO METERS CO., Ltd., ENGEL, F. V. A. E., and BARTON, A. T., Abbey Road, Park Royal, London. Dec. 13, 1933, No. 35124. [Class 38 (iii)] In a follow up relay device for a low torque measuring instrument, the displaceable instrument element is normally coupled mechanically to a pivoted contact carrying member so that the actual contact thereof makes an amplified displacement and is adapted to co-operate with one or other of a pair of contacts on an angularly displaceable carriage to control circuits of a reversible electric motor of high torque so that the carriage is displaced by the motor in a direction and to an extent dependant on the displacement of the instrument element. After a predetermined movement of the element relative to the pivoted contact device, the element is uncoupled. The torque of the motor may vary in accordance with the displacement, and high and low limit switches may be provided. By the use of suitable gearing, any required law relating the relayed displacements to the original displacements may be obtained. As shown in Figs. 1 and 2, the spindle 2, whose movements are to be followed, drives a disc 3 which is coupled by a pin and slot device to a disc 12 pivotally mounted on a support 4<a> on a carriage 9 mounted on the shaft of a reversible motor 30 which is coaxial with the spindle 2. The disc 12 carries an arm 4 having a contact roller 5 adapted when moved from neutral position to engage one or other of a pair of arcuate contacts 7, 8 in order to make a circuit for driving carriage 9 in one or other direction. When disc 3 moves clockwise, arm 4 moves counter-clockwise to engage contact 7 and member 9 is driven clockwise until disc 3, arm 4 and carriage 9 assume their normal relative positions. The disc 3 has pins 14, 15 on each side of the slot which lie between pin 11 and two short pins 17, 18 on disc 12, which has two longer pins 22, 23 so that when the angular movement of 3 in either direction exceeds a predetermined amount, the disc 3 is uncoupled from and moves on independently of the contact arm 4 see Fig. 3, but the arrangement of the pins causes the two parts to be properly coupled again when the follow-up movement takes place. Modified couplings having the same effect comprise " Geneva " motions and also a gear wheel replacing disc 12 and having some of its teeth cut away to perform the functions of the long and short pins on disc 12. Each of the contact members 7, 8 may be replaced by a pair which are pressed into engagement or bridged by the roller 5, and in the modification shown in Fig. 9, contacts 61, 60 are engaged successively so that for small movements of arm 4, resistance 62 is in circuit while for larger movements the resistance is cut out, as shown, or reduced. The follower 9 may be arranged to operate mercury or other switches in limiting positions so as to open the driving circuits.
Patent GB-351743-A (GB)
IPC: A61B7/02
Abstract: 351,743. Stethoscopes. PHILPOTT, E. W. and HOPKINS, J. A., 8, Meredith Street, Clerkenwell, London. July 1, 1930, No. 19926. [Class 81 (ii).] A stethoscope is formed with a flat bell-shaped cheat-piece c, having a diaphragm e, and a funnel b formed integral therewith, the double chestpiece being rotatable upon a valve tube i having apertures f, g at rightangles to one another. The tube i is connected to ear piece tubes h. The construction enables either chest-piece to be used, to the exclusion of the other, in positions in, and at right-angles to, the plane of the tubes h respectively. The operative positions may be determined by a snap-action fastener such as a spring blade on the chest-piece engaging any one of four recesses in an adjacent portion of one of the tubes h.
Patent GB-209289-A (GB)
Title: Improvements in or relating to gas and like cooking stoves
IPC: F23D14/46
Filed: 1922-12-27
Abstract: 209,289. Geslain, O. L. Dec. 27, 1922. Gas cooking-stoves.- A gas and like cooking-stove comprises an oven b surrounded by a tubular burner d, the bottom and upright portions of which are perforated and which is situated between the oven and an outer insulated casing c. At the top of the oven is a grill burner consisting of two perforated tubes d<2> connected at their ends by a cross tube d<4> and by a tie-plate to form a removable frame on which is placed a grill-plate p. In the top of the oven is a sliding damper e'. By closing the air apertures y of the burner d by the fingers luminous flames are produced which light the oven through mica or glass covered holes z, allowing the interior to be viewed through an inspection opening in the door. The hot-plate g<1> is removable, and the ends of the hot-plate burners are formed as shown in Fig. 13 to engage in recesses l, by which means the burners are removably supported. Gas is supplied to each burner through a separate chamber s to which is attached the cock r and on which is the injector nozzle t, controlled by the needle u, Fig. 6.
Patent GB-777270-A (GB)
Title: Improvements in electric batteries
Inventor: HONEY ERIC MAURICE O'CONOR
IPC: H01M10/10
Filed: 1954-12-06
Abstract: 777,270. Batteries. PRITCHETT & GOLD & E.P.S. CO., Ltd. Nov. 14,1955 [Dec. 6,1954], No. 35225/54. Class 53. The electrolyte space of a battery is filled with powder absorbent 12, e.g. diatomaceous earth, by mounting the plate element 5 in the inverted position within a box 6 so that the plate lugs pass through retaining plates 3, 4, permeable to air but impermeable to powder, and applying compressed air from a cylinder 11 to the powder. The box may be lined with paper or plastic foil 7 and the retaining plates 3, 4 may be of perforated ebonite and glass wool respectively. After filling, the box 6 is removed and the plate element and powder filling together with the foil 7 and the retaining plates 3, 4 are inverted and inserted in the battery casing. Ribbed microporous separators may be mounted between the plates before filling, the spaces between the ribs then being filled by the powder absorbent.
Patent GB-1152392-A (GB)
Title: Human Body Scanner
Inventor: DONATO LUIGI
IPC: A61B6/00
Filed: 1966-08-05
Abstract: 1,152,392. Radio-diagnostic apparatus. EUROPEAN ATOMIC ENERGY COMMUNITY (EURATOM) and UNIVERSITA DEGLI STUDI DI PISA. Aug.5, 1966 [Aug.17, 1965], No.35236/66. Heading G1A. Radio-diagnostic apparatus for scanning the body of a patient to determine body radio-activity at points or zones, or the activity of the whole body, includes a number of pairs of scintillation counters, each pair mounted on a respective carriage which is movable longitudinally and transversely with respect to the bed on which the patient is lying. Each carriage 7, 8, 9, Fig.2, supports two detectors, one above and one below the level of the bed 4. The collimators for each pair of detectors are axially aligned and the pairs of collimators aligned transverse to the bed 4. The carriages can move longitudinally with respect to the bed on respective levels of a pair of three-level rails and transversely on individual guides. A motor 6 with a screw drive is provided for simultaneous movement of all three carriages 7, 8, 9 longitudinally. Respective motors are provided for the transverse and longitudinal movement of an individual carriage. Thus various measurement procedures are possible. For example, the carriages may be fixed at predetermined positions and simultaneous measurements taken at these three different points on the body. The output of each detector pair is fed to multi-channel recorder via an analyzer and digital integrator, Fig. 6 (not shown). By moving the carriages simultaneously according to a predetermined programme, a scan over the whole bed plane can be carried out Fig. 7 (not shown). In this case, a summator may be used to integrate the detector outputs and obtain a measurement of body activity, Fig. 8 (not shown). By connecting the top detectors separately from the bottom ones, the activity relationship between the top and bottom of the body may be determined. An individual carriage moving by itself may be used to scan a predetermined zone of the body, Fig. 9 (not shown) A photo-electric system may be incorporated to measure the body layer thickness examined so as to relate the activity with this thickness.