baber/WOPTO huggingface dataset:
Patent GB-508754-A (GB)
Title: Improvements in or relating to compressed powder electromagnetic cores
IPC: H01F17/04
Filed: 1938-09-24
Abstract: 508,754. Inductances and transformers. LORENZ AKT.-GES., C. Sept. 24, 1938, Nos. 27900 and 27901. Convention dates, Sept. 24, 1937 and Jan. 15, 1938. [Class 38 (ii)] To enable a magnetic core, comprising a metal powder and insulating binding, to be supported, it is wholly or partly encased in an insulating material having a lower softening point than that of the insulating binder. This avoids the difficulty of mounting due to the brittle character of the core. Fig. 1 shows a core 1, for a variometer, mounted by means of insulating material 2 in which the pivot pins 3 are embedded. In a modification shown in Fig. 3, to permit of cooling, the core 1 is in the form of a ring and is mounted in a ring 2 of insulating material and supported therefrom by spokes 4 which may be integral with either the ring 2 or core 1, or may be formed partly of each. The Specification refers to a hardened alkaline-condensed phenol-formaldehyde product as being suitable for the core binder and for the insulating support, the material for the latter having a lower softening point.
Patent GB-771472-A (GB)
Title: A magnetic voltage stabiliser
IPC: G05F1/32
Filed: 1952-11-05
Abstract: 771,472. Automatic voltage control systems. LICENTIA PATENT - VERWALTUNGS - GES. Nov. 5, 1952 [Nov. 5, 1951], No. 27908/52. Class 38 (4). In an automatic A.C. voltage control system of the type in which a saturable reactor is connected in series with the load and controlled in accordance with load voltage, and in which this voltage is detected by a non-linear resistance bridge the output of which is amplified by a self-saturating magnetic amplifier, it is stated that the highest value of the control current is so chosen that the operational range of the reactor lies between the linear unsaturated range and the saturated range of the magnetization curve. The load 12 is supplied from a source UN via an auto-transformer 1 and the reactor 2. The load voltage is rectified at 9 and applied to a bridge consisting of linear resistors 8 and rectifiers 7. The output of the bridge is amplified by the self-saturating magnetic amplifier 5 to control the reactor 2. A current component is obtained from the rectified output of a current transformer 13 and also applied to the amplifier 5 to effect current limiting. A three-phase version of the system is disclosed in Fig. 3 (not shown).
Patent GB-1436745-A (GB)
Title: Machine having a reciprocating punch
IPC: B21D28/14
Filed: 1973-06-12
Abstract: 1436745 Nibblers TRUMPF MASCHINEN AG 12 June 1973 [13 June 1972] 27912/73 Heading B3W A nibbling or like punching machine coinprises a die 3 and a reciprocable punch 2, the die or a holder therefor being connected to a drive head 4 of the punch by an elongated support member 5 positioned directly adjacent the punch in the head 4 and in a gap between the head and the die when the punch is carrying out a punching stroke, the element and the punch then having a circular cross-section in the gap. As shown, Fig. 1, the lower portion of the member 5 is of circular cross-section and is located in a bore 7 of the die by a pin 8. The working end 24 of the punch 2 is a little more than a semi-annulus and with the member 5 forms a circular cross-section. At the upper end of the member 5 is a semi-annular portion 14 located on a shoulder 15 in the drive head 4 by means of a sleeve 16 which also centres the punch. The lower portion 17 of the sleeve 16, the punch 2, the member 5 and the portion 14 together form a circular cross-section. The sleeve 16 is retained in the head 4 by a pin 18. The punch is screwed to a connecting rod (not shown) for reciprocation by an electric motor. In an alternative embodiment, Fig. 3 (not shown), the sleeve and the support member are integral and the crosssection of the working end of the punch is semicircular plus triangular extensions to give the working end an arcuate periphery extending over more than 180 degrees.
Patent GB-1212783-A (GB)
Title: Photographic silver halide material
Inventor: STONHAM JOHN PETER
IPC: G03C1/30
Filed: 1968-06-12
Abstract: 1,212,783. 783. Photographic silver halide material. ILFORD Ltd. June 6, 1969 [June 12, 1968], No.27947/68. Heading G2C. [Also in Division C2] A photographic material comprises a support having coated on one side thereon, in order, a gelatine layer which is partially cross-linked by the presence therein of disulphide linkages and an unhardened gelatino silver halide emulsion layer. An inert pigment e.g. carbon black is preferably present in the partially cross-linked gelatine layer. The said photographic material may be prepared by coating a layer of thiolated gelatine on a support and subjecting the layer to aerial oxidation to affect cross-linking of thiol groups to form disulphide linkages, and thereafter coating a layer of a gelatino silver halide emulsion thereon, or by treating an aqueous gelatine solution with a gelatinecrosslinking agent of the formula R-S-S-R<SP>1</SP> where R and R<SP>1</SP> are each groups capable of reacting with gelatine so as to cross-link the gelatine and coating the mixture on a support thereby to affect partial cross-linking of the gelatine layer by the formation therein of disulphide linkages, and thereafter coating a layer of a gelatino silver halide emulsion thereon. When the photographic material of the present invention after exposure is treated with an aqueous alkaline solution of a mercaptan compound for a predetermined period of time a selective decross-linking reaction of the gelatine occurs and the gelatine may easily be removed by washing. Negative or direct positive photographic records may be obtained. If the exposed material is kept in the presence of the mercaptan compound either during or after development for a relatively short time a negative image is obtained; a longer period of time in a mercaptan compound which is also a silver halide solvent a direct positive image is obtained; but if the material is kept in the presence of a mercaptan compound for too long no image at all is obtained as all the gelatine becomes de-crosslinked and removed during the washing step. A negative image may also be obtained by developing the exposed material in a non-tanning silver halide developing solution, removing the undeveloped silver halide by fixing it out, bleaching the developed silver to silver halide, treating the material with an aqueous alkaline solution of a mercaptan compound and washing the material in water thereby to remove the silver halide emulsion from the material and the gelatine from the unexposed areas of the material. The mercaptan compound may be cysteine, cysteine hydrochloride, thiomalic acid (mercapto-succinic acid), N-acetyl-homocysteinethiolactone, 2 -mercaptoethylamine hydrochloride, 2-mercaptoethanol or 1-thioglycerol.
Patent GB-849562-A (GB)
Title: Improvements in or relating to devices for the lateral displacement of material lying on the ground
IPC: A01D78/00
Filed: 1957-09-04
Abstract: 849,562. Side-delivery rakes. VAN DER LELY N. V., C. Sept. 4, 1957 [Feb. 9, 1957], No. 27969/57. Class 6(3). A side-delivery rake comprises a frame 4 carrying rake-wheels 24, 25, 33, 34 and being turnable about a horizontal axis to change the function of the device from side-delivery to tedding, the distance between the rake-wheel planes being correspondingly adjustable by rotating each wheel-mounting through 180 degrees about another horizontal axis inclined to the rake-wheel axis. In the form shown, the frame comprises a beam 8 having a shaft 6 attached to it by a vertical pivot 7 and secured by an adjustable stay 9. The shaft is mounted within a tube 5 carried on a structure 3 supported by tractor lift-links 2. When the structure 3 is lifted the frame 4 can be turned through 180 degrees about the axis of the tube 5. The beam 8 at its ends carries bearings 13, 14 in which are journalled further beams 17, 26 also terminating in bearings 18, 19, 27, 28. Stubshafts 20, 21, 29, 30 are locked in these bearings in either of two diametrically-spaced positions. The outer ends of the stub-shafts are cranked through about 170 degrees from the axes of the bearings and constitute axles for the hubs of the rake-wheels. Rotation of the stub-shafts in the bearings alters the spacing between the rake-wheel planes. In the inverted position the device operates as a tedder. The beams 17, 26 may also be turned, about the bearings 13, 14, through 180 degrees, to convert the device into a swath-turner, Fig. 5 (not shown).
Patent GB-390813-A (GB)
Title: Improvements in or relating to electrically insulated parts with metal inserts and to the manufacture thereof
IPC: H01R13/405
Filed: 1931-10-08
Abstract: 390,813. Binding-posts; mounting terminals. BELLING & LEE, Ltd., DAVIES, F. E., and HASLAM, A. G., Queensway Works, Ponders End, Middlesex. Oct. 8, 1931, No. 27984. [Class 38 (i).] A method of affixing in a piece of insulating- material 12 an insert of metal 15 harder than the insulating material, consists in forcing it against a fixed abutment 14 of metal harder than the insert, to expand the inner end portion of the latter so that it bites into the insulating material. The inner end portion 17 is made conical and the insert may be recessed as at 18 to assist the outward expansion. The fixed abutment may be in the form of a washer, a ring of round steel wire or a steel ball, whilst, in some cases, the abutment may be made removable and can itself be tapering or conical and so avoid the necessity of shaping the insert.
Patent GB-534866-A (GB)
Title: Improvements relating to telephone and like signalling systems
IPC: H04Q1/36
Filed: 1939-10-16
Abstract: 534,866. Automatic exchange systems. SIEMENS BROS. & CO., Ltd., CLAY, D. L., and BARTLETT, C. J. C. Oct. 16, 1939, No. 27986. [Class 40 (iv)] In an impulse repeater, the first impulse of each train is suppressed, an additional impulse being sent at the end of each digit received. In the arrangement shown in Fig. 3, line relay A which bridges the outgoing junction is followed by release relay B, metering relay J and a relay HA. On its first relapse in response to a dialled digit, A energizes a relay X and dialling relay C but does not repeat the impulse since the impulse contact is shunted at b4, y4. At the end of the impulse Y is energized so that subsequent impulses, if of normal duration, are repeated in the ordinary way, relays X and Y holding throughout the digit on account of their short-circuited left-hand windings. If the make periods are too long X falls back during each to shorten them as far as the repeated impulses are concerned. The character of the repeated impulses is further improved by a spark-quenching circuit across the impulse contacts. At the end of the received digit relays X, Y, C fall in turn and a further impulse is then sent over the junction. The reply signal energizes D whereupon MD pulls up sluggishly to apply a booster impulse to the test wire and is released to terminate the impulse. MD also energizes reversing relay DD. During release the relapse of B initiates the release of the local switches and the temporary re-operation of C guards the repeater for a further period to allow the release of the switches ahead. In a modification, Fig. 2 (not shown), a similar arrangement is provided in a repeater in which the impulses are repeated as bursts of voicefrequency current. In this case two high speed relays of the kind described in Specification 405,436, [Group XXXVII], connected in series act as the impulse relay and the relay Y has two helping relays of the high speed type which ensure proper functioning of the circuit of the "make" part if the incoming impulses is shorter than the operating time of Y.
Patent GB-669441-A (GB)
Title: Improvements relating to safety pins
Inventor: WOOD ARTHUR HOWARD
IPC: A44B9/18
Filed: 1949-11-03
Abstract: 669,441. Safety pins. EDMONDS,. Ltd., G: Aug. 1, 1950 [Nov. 3, 1949], No. 28136/49. Class 43. In a safety pin of the normal type a part-circular locking member 7, rotatable within the C- shaped point guard 2, is movable from a position in which the pin point can be inserted through the gap 8 in said member 7 to engage a notch 3 in the free end of the guard, to a locking position in which the pin point is received in a slot 9 at one end of said member 7. A finger piece 11 is formed by bending opposed lugs 10 of the member 7 round the edges of the guard 2, the member 7 however being prevented from sliding off by the provision of splayed out ends on the guard 2. After engagement of the pin point in the notch 3, the member 7 is rotated so that the gap in the guard is closed, the pin point being engaged by the end 9a of the slot 9. On movement of the locking member 7 to the releasing position the nicked rear end 7a thereof forces the point 4 of the pin 5 downwards out of the guard piece slot 3.
Patent GB-369874-A (GB)
Title: Improvements in spark plug testers
IPC: F02P17/00
Filed: 1931-10-10
Abstract: 369,874. Ignition testing. KRANZ, A., 8E, Badstubenvorstadt, Zeitz, Germany. Oct. 10, 1931, No. 28226. [Class 7 (iv).] Vacuum tubes dare mounted on supporting springs e, f and are visible through openings c in the casing front. A rocking bar k is carried in end brackets and provided with fixed terminals h connected to the sparking plugs with flexible connections n and with springs o which, by an operative rod or the like, may be made to engage the tube supports f. Insulating partitions on the casing and on the bar k separate adjoining springs and tubes: Resilient washers are placed between the casing and the dashboard.
Patent GB-1456312-A (GB)
Title: Method for moulding string-mounted plastics members
IPC: B29C45/14
Filed: 1974-01-16
Abstract: 1456312 Injection-moulding beads &c I LEVINE 16 Jan 1974 [1 Oct 1973] 28301/76 Divided out of 1456311 Heading B5A The disclosure is substantially identical with that of Specification 1,456,311, but the claims are directed to a process rather than to apparatus.
Patent GB-283701-A (GB)
Abstract: 283,701. Marks, E. C. R., (U.S. Industrial Alcohol Co.). Nov. 29, 1926. Alcoholic liquids, distilling.-Alcohol, distilled from weak alcoholic liquids such as beer, by the process described in Specification 278,211 is, without cooling, dehydrated by distillation in presence of a liquid such as benzol which forms an azeotropic mixture. The dehydrated alcohol is distilled to separate solid impurities. The distillation of the alcoholic liquid is carried out in a rectifying column 4 and the separation of aldehydes &c. in a column 49. The purified alcohol from the base of this column is passed into a dehydrating column 72 together with benzol from a tank 73. Dehydrated alcohol from the base of the column 72 is passed into a still 102 the vapours from which pass to a condenser 105. The mixture of vapours from the top of the column 72 is passed through a dephlegmator 81 and condenser 86. Part of the condensate is returned to the column for reflux and the remainder passed into a settling chamber 94, where it separates into two layers. The upper layer of benzol is returned to the column, and the lower layer mixed with water forms two layers in a settling chamber 96. The lower layer from this chamber consisting of dilute alcohol is either passed into the column 4 or is treated together with the liquid containing fuel oil withdrawn from the column 4 by a pipe 10. This liquid is passed into a column 14 heated by steam injected through a pipe 15 at its base so as to maintain a temperature of about 91‹ C. just above the feed pipe 10. Water passes out from the pipe 16, and alcohol vapours pass from the top through a dephlegmotor 18 and condenser 22. Condensed alcohol, not required as reflux, is passed by a pipe 27 to the dehydrating column 72. Fusel oil accumulates on the plates just below the inlet pipe 10 and is withdrawn by a pipe 30 having valved connections 31, 32, 33, to a scrubber 34 where it is washed with water. Fusel oil settles out as an upper layer and is withdrawn and the water layer which contains alcohol is passed into the column 4.
Patent GB-827872-A (GB)
Title: A method of and means for feeding workpieces in sheet form
IPC: B65H29/04
Filed: 1956-09-17
Abstract: 827,872. Metal sheet feeds. SCHROTER, F. Sept. 17, 1956 [Oct. 21, 1955; Jan. 2, 1956], No. 28400/56. Class 83 (4). [Also in Groups XVI and XXX] Sheets, plates, &c. are fed into and out of processing stations such as stamping and embossing machines 6, Fig. 1, by gripper bars 18 which are intermittently carried forward by continuously-moving means such as endless chains, ropes, belts 7 and are uncoupled and decelerated to zero speed for the processing operations and are then accelerated and recoupled. To provide accurate location the gripper bars 18 are also moved a small amount transversely to the normal feed path on to accurate locating means. The gripper bars 18 are supported at each end on carriages 16, Fig. 9, running on wheels 17 along a pair of continuous tracks 8 in which the chains 7 also slide. Coupling between the chains 7 and carriages 16 is provided by hooked arms 14, Fig. 2, pivoted to the carriages 16 and engaging projecting pins 13 on the chains. At the positions at which the bars 18 are to be disconnected from the chains 7, portions 20 of the tracks 8 have a cam 21 which disengages the arms 14 from the pins 13. In each of these positions, toothed segments 23, 54, 58 engage racks 22 on the carriages 16 and are oscillated by cams 27 through followers 26 and rack and pinions 24, 25 so that the carriages 16 are gradually brought to rest. Further cams 29 lower the track portion 20 through pushrods 31 so that the carriages 16 complete with the gripper bars 18 are lowered on to conical or wedge-shaped pins 33, Fig. 10, which provied accurate location for the bars 18 in recessed bushes 36. Spring grippers 19 on the bars 18 are automatically opened by rotation of a camshaft 49 through an arm 48 when the carriages 16 are brought to rest on the entry side (right of Fig. 1) of the machine 6 so that the sheets 52, Fig. 5, can be inserted into the opened grippers 19 from a table 50. At this position the arm 48 is engaged by a hooked member 47 actuated by a further cam 45 to open and close the jaws 19. At the next position, while the gripper bar 18 is accurately located on the lefthand side of the machine 6, it holds the sheet in the correct position for the stamping &c. operation. After the operation has been completed, the removal of the sheet 52 from the die platen 3 is eased by the raising of the carriages 16 in the tracks 20 so that the sheet 52 is lifted from the die 3 before it is withdrawn. At a third position of the carriages 16 (extreme left of Fig. 1) a cam-actuated arm 59 engages the arm 48 to release the sheet and allow it to drop on to a stacking table 67.
Patent GB-360129-A (GB)
Title: An anti-skid device for use on mechanically propelled road vehicles such as motor cars and the like
IPC: B60B39/00
Filed: 1930-09-23
Abstract: 360,129. Preventing skidding. DONOVAN, F. D., 6, Raisen Hall Place, Southey, Sheffield. Sept. 23, 1930, No. 28401. [Class 108 (ii).] In an antiskid device for road vehicles a trailing wheel g is mounted in a fork b pivoted to a ring which is rotatably mounted on a vertical shaft a, the fork b passing between the legs of a fork d which carries eccentrically pivoted quadrants f for arresting the skid which quadrants are raised and lowered through the medium of fixed cams e and rotatable cams d<1>, d2 integral with the fork d. A spring-pressed non- rotatable cam c is provided for taking the thrust. The quadrant f and the fork b and the ring j and the fork bare respectively connected by springs. The wheel g acts like a castor in the event of a skid and rotates the cams d, d<1> thus lowering the quadrants into contact with the ground, further lateral movement of the vehicle rotating the quadrants, the eccentricity of which. increases the pressure on the road until a stop d<3> on the fork d is engaged. The quadrants may have plain or serrated faces.
Patent GB-689408-A (GB)
Title: Improvements in or relating to radio lenses
IPC: H01Q15/02
Filed: 1950-11-21
Abstract: 689,408. Aerials. COMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. Nov. 21, 1950 [Dec. 3, 1949; July 13, 1950], No. 28401/50. Class 40 (vii). A lens for electromagnetic waves comprises a plurality of parallel thin metal plates each bearing a large number of perforations having dimensions small compared with the operating wavelength. Fig. 1 illustrates such a lens arranged at the mouth of a horn. The central plate 3 of the lens contains fewer perforations than either of the outer plates 2 and 4. In a modification, Fig. 5 (not shown), the lens is spaced from the mouth of the horn. In several embodiments for use in large aperture systems account is taken of the fact that with a plane lens, the projected areas of the apertures upon the wavefronts on the two sides of the lens differ so causing the transmission coefficients of the plates on opposite sides of the lens to differ. In the arrangement shown in Fig. 6, corresponding apertures in the plates 2, 3, 4 are made of different sizes, those in plate 2 being the largest and those in plate 4 the smallest. Alternatively, Fig. 9 and 10 (not shown), the lens may be curved or have a polyhedral contour in such a manner as to maintain the incident and emergent angles at all points on the lens substantially equal to one another. Fig. 15 shows a plate wherein the sizes of the apertures are greatest at the centre and decrease towards the edges. A lens comprising a plurality of such plates having different curvatures its shown in Fig. 14. Fig. 12 illustrates a plate similar to that of Fig. 15, but comprising a number of different zones which operate to bring different respective wavefronts in the incident wave into coincidence in the emergent wave. Fig. 17 shows an aerial system where an aerial element is mounted at F before a reflector 10 which is housed within a horn 1 having a lens 11 in its mouth.
Patent GB-506067-A (GB)
Title: Improvements in or relating to means for reducing torsional oscillations in transmission systems
IPC: F16F15/24
Filed: 1937-10-20
Abstract: 506,067. Power plant. PAINE, H. SCOTT-, (trading as BRITISH POWER BOAT CO.), and WILSON, W. K. Oct. 20, 1937, No. 28629. Drawings to Specification. [Class 7 (ii)] [Also in Group XXXIII] Two 6-cylinder 4-stroke-cycle single-acting internal-combustion engines are connected through clutches, reversing-geltrs and flexible couplings to a gear box, from which a drive is taken. The clutches and reversing-gears may be practically rigid with the appropriate gears at the gear box, in which case the flexible couplings are placed between the masses and the prune movers. The Specification contains an analysis concerning the torsional oscillation of the system. Specification 168,979, [Class 114], is referred to.