baber/WOPTO huggingface dataset:
Patent GB-789752-A (GB)
Title: Improvements in or relating to enclosed electric switches
Inventor: DESMOND ERIC
IPC: H01H13/14
Filed: 1955-06-21
Abstract: 789,752. Retractive switches. SMITH & SONS (ENGLAND), Ltd., S. June 21, 1956 [June 21, 1955], No. 17798/55. Class 38 (5). A microswitch 17 enclosed in a casing 10 is operated by a plunger 14 which passes through and is sealed in a flexible metal element sealed to the casing 10 to render the casing gas tight. As shown a metal bellows 25 is soldered or brazed to the plunger and casing 10, the bellows acting as the restoring spring for the plunger. A screw 15 engages the microswitch blade 18, and stops 16, 23 limit the movement of the plunger. A spring-loaded press button 30 is slidably mounted in the plunger 14 and provides an overtravel safety arrangement. The switch may be filled with an inert atmosphere. In a modification (Fig. 5, not shown) the bellows is replaced by a diaphragm. The switch is suitable for use in machine tools.
Patent GB-756619-A (GB)
Title: Improvements relating to high-voltage electrical apparatus having solid insulation
IPC: H01F38/30
Filed: 1954-06-18
Abstract: 756,619. Transformers. REYROLLE & CO., Ltd., A., and MOSER-GLASER & CO., AKT.-GES. June 18, 1954 [June 18, 1953; April 7, 1954], No. 17904/54. Class 38 (2). [Also in Group XXXVII] High-voltage electric apparatus and assemblies thereof, including power and instrument transformers, comprise at least one component insulated with insulation built up from two or more shaped solid sections of thermosetting synthetic resin of the low-moulding-pressure type that hardens by a polyreaction without the liberation of volatile constituents assembled together with joints between them filled with an insulating medium of high dielectric strength. A voltage transformer having a primary winding 1 surrounding an insulating tube 2 of synthetic resin, ceramic or glass which encloses a magnetic core 3 carrying a secondary winding 4 is enclosed with a paii of dished interengaging moulded housing members 5, 6 of synthetic resin. They meet in a joint 11, form a tapered recess into which is plugged a moulded resin terminal bushing 9 forming a joint 13, and are separated from winding 1 by a space 12, these joints 11, 12, 13 being suitably filled. The housing may be sealed to the tube 2 by a synthetic resin sealing compound, or by a soldered metallized joint. The members 5, 6 may be enclosed in a two-part earthed metal casing, which may be used as a mould for forming these members. The spaces for the joints are produced by removable partition walls e.g. of polyethylene, polytetrafluorethylene, or metal coated with non-adhesive material such as silicone grease, Fig. 2 (not shown). Fig. 3 shows a current transformer, the bushing 25 of which is separated by a suitably filled joint 27 from the ring-shaped member 23 enclosing the primary winding inside a metal tube 21 which links with core 29 carrying the secondary winding 30. The shaped sections may alternately be of ceramic, glazed natural soapstone, or glass. The joint material may be a gas, liquid, semi-liquid, paste, or rubberized paste-like material, retained in position if necessary by sealing the outer edges of the joint with solid insulating material clamped in position, by synthetic resin welds, or adhesive tape. It may be absorbent deformable insulating material impregnated with the insulating liquid or gas; and having non-absorbent edge portions, or impregnated strings the outer ones of which are treated to form sealing gaskets. It may comprise flexible sheet material with surfaces wetted with an insulating liquid. Suitable gases are compressed air, nitrogen, carbon-dioxide, or a halogen gas. Liquids used may be heat-proof, non-inflammable, have constant viscosity over a wide temperature range, low surface tension, high dielectric strength, low dissipation factor, and high chemical stability, examples being silicone oils, pastes or rubbers, fluorethers, fluoro-t-amines, chlordiphenyls, chloro-phenyl-indans and floroindans. To improve cooling, the joints may be interconnected to permit fluid circulation, the fluid also passing through a cooler.
Patent GB-1249755-A (GB)
Title: Apparatus for crimping electrical connectors to wires
Inventor: BREHM R C
IPC: H01R43/01
Filed: 1970-04-16
Abstract: 1,249,755. Making electrical connections, jointing by stamping, shearing. AMP Inc. 16 April, 1970 [28 April, 1969], No. 18111/70. Headings B3A, B3Q and B3W. Apparatus for crimping a substantially U cross-section connector 2 to a wire comprises a crimping die, an anvil 50 having a connector supporting surface 54, means for moving the die and anvil relatively to one another and a cutter bar 60, 60<SP>1</SP> which enters a slot 62, 62<SP>1</SP> in the die to trim the wire before the die and anvil are brought into crimping relationship. The die comprises two jaws 26, 26<SP>1</SP> movable between open and closed positions, the slot extending in the direction of movement of the jaws. The connector is placed on the surface 54 and the wires 20, 22, of the pair to be connected are laid in the connector with their ends in the slots 62, 62<SP>1</SP>. Handles 40, 40<SP>1</SP> are moved towards each other and as the jaws 26, 26<SP>1</SP> close, the cutter bars 60, 60<SP>1</SP>, enter the slots thereby trimming the wire ends. Abutment surfaces 30, 30<SP>1</SP> on the jaws meet and surfaces 32, 32<SP>1</SP> form female die surfaces, which crimp the connector to the wires 20, 22 as a pin 46 reaches the top of a slot 48 to drive the anvil upwardly on continued closure of the handles. In an alternative embodiment two pairs of jaws 98, 102 and 98<SP>1</SP>, 1021 are provided and are pneumatically operated. As a piston 162 is driven upwardly, a cam block 130 acts on toggle mechanisms 120, 124 and 120<SP>1</SP>, 124<SP>1</SP> to close the jaws. The jaw 98 is connected to jaw 102<SP>1</SP> by links 166, (166<SP>1</SP>) and links 164, (164<SP>1</SP>) interconnect jaws 98<SP>1</SP>, 102, to provide simultaneous actuation thereof, Fig. 12 (not shown). As the piston continues to rise the lost motion in a coupling 157 is taken up and anvils 132, 132<SP>1</SP> are driven upwardly, after the wires have been trimmed, to crimp the connectors as in the first embodiment. An alternative form of trimming device comprises cutter bars (190), (192) mounted on opposite sides of and at either end of an anvil (184). The bars enter slots (185), (193) in jaws (188), (186) respectively as they close in the initial part of the work cycle, Fig. 13 (not shown).
Patent GB-421342-A (GB)
Title: A detachable deep sea fishing dredge
IPC: B63C11/50
Filed: 1933-06-26
Abstract: 421,342. Fishing-dredges. PAWLE, A. R., 141, New Street, Brightlingsea, Essex. June 26, 1933, No. 18118. [Class 68 (i)] A detachable fishing - dredge comprises a blade E connected centrally and at its ends to rods A, B, which converge and are bolted together, a further rod D passing intermediately through all the rods and being secured to the rods B. The rod D is also connected to the blade by intermediate supports C. The blade carries teeth F each provided with a flange fitting over the rear edge of the blade, a single rivet fixing each tooth.
Patent GB-1454665-A (GB)
Title: Timedivision-multiplex subscriber circuit
IPC: H04L5/24
Filed: 1974-04-25
Abstract: 1454665 Time division multiplex subscriber circuit INTERNATIONAL STANDARD ELECTRIC CORP 25 April 1974 [27 April 1973] 18125/74 Heading H4M A TDM subscriber circuit is designed to enable either teleprinter characters which are coded bit sequences (e.g. CCITT No. 2 code) or dial signals, which are interpreted as coded bit sequences, to be synchronized with and inserted bit by bit into the time slots of a TDM system and to allow for the tolerances in mark/space ratio and pulse width of the dial signals. Signals received from the teleprinter subscriber line E are stored in a buffer F3 (a D-type flip-flop) when sampled under the control of clock pulses (applied at T) which occur at a frequency appropriate to the cycle time of the TDM system, the effect being to introduce a delay between the time when a bit is first applied to the D input of the buffer and the time at which a corresponding bit passes to the output A and thence to the multiplex distributer (Fig. 1, not shown). A counting arrangement Z1, Z2 is provided, wherein a count of clock pulses is initiated in counter Z1 in response to the start of a signal indicated by a "1"#"0" change in signal level on the line E and is terminated after a preset interval (T). Depending on the direction of the change following this interval, the counter Z2 may be initiated for a further preset interval. It is shown in the Specification that the direction of the change following the first preset time interval (120#T#140 ms.) determines whether a character signal or dial signal is being responded to. When the final count is reached, the sampling of the buffer is disabled until the system is reset on receipt of another character start pulse or dial signal. The system enables sampling to be reduced to once per bit (a dial pulse being regarded as 5 bits) with consequent saving in bandwidth. When channel signals are received a "1"-"0" transition on the line E results in a "0"-"1' transition at the output Q of flip-flop F1, and a "1"-"0" transition at the output Q, the flip-flops F1, F2 not being blocked on their reset inputs at the beginning of a cycle. The "0" output from Q of F1 resets a counter Z1 and enables, via the AND gate U1, a divider T to operate. This divides the multiplex rate to the character repetition rate. The pulses from the divider are fed to the counter Z1, which delivers an output at a certain count, delivering a signal via an OR gate O1 to the reset input of the flip-flop F1. At the same time F2 will be reset via the Q output of F1 and OR gate 02. The output pulses from the divider T are also applied to the clock input of a buffer F3 which receives at its D input the teleprinter characters or dial signals. The buffer delays the individual bits by a delay of about 10 ms. (the length of the pulses from the divider T). When the divider T is blocked by a "1" on its reset input, the character state of the last sampled bit remains stored in the buffer until T is enabled again.
Patent GB-808359-A (GB)
Title: Improvements in or relating to warp stop motions for looms
Inventor: BRACEWELL ALLAN
IPC: D03D51/28
Filed: 1954-06-21
Abstract: 808,359. Electrical warp stop-motions for looms. BRACEWELL Ltd., G. June 21, 1955 [June 21, 1954], No. 18137/54. Class 142(2) To enable a drop wire as used on a mechanical warp stop-motion and having round ends to the slot 29 therein to be used on an electrical stop-motion, the contact bars 13 are inclined between 4 and 8 degrees to the vertical. A fallen dropwire will engage both the central contact 11 and the bar 13 forming the second contact. The contacts are separated by insulating material 15. Brackets 17 in which the bars are mounted are secured by a bolt 21 to a rod passing through a hole 19 in each bracket and semi-circular lips 22 engage warp tension rods to locate the brackets.
Patent GB-1067403-A (GB)
Title: Improvements relating to horticultural cloches, cold frames and the like
Inventor: JAMES WILLIAM
IPC: A01G13/04
Filed: 1965-04-29
Abstract: 1,067,403. Cloches; frames. WILLIAM & H. H. JAMES Ltd. Sept. 8, 1965 [April 29, 1965], No. 18163/65. Heading A1E. A cloche or cold frame comprises sheet metal members 10, 11 joined by angle strips 12 and nuts and bolts 13, and two roof panes of transparent or translucent plastics material secured to strap-like hinges 15, 16 mounted on a hinge bar 14. The cloche or frame is hexagonal or octagonal shape in plan view.
Patent GB-404294-A (GB)
Title: Improvements in mowing machines
IPC: A01D34/34
Filed: 1932-06-29
Abstract: 404,294. Mowing-machines. BAMFORD, J., St. Mary's Mount, and BAMFORD, C. J., The Parks, both in Uttoxeter, Staffordshire. June 29, 1932, No. 18313. [Class 6 (iii).] In a mowing-machine of the type having a reciprocating knife bar driven by a connecting- rod receiving its motion from a crank pin, eccentric or the like, the connecting-rod comprises a bearing of spherical or part-spherical form surrounding the crank pin or the like for allowing a limited amount of universal movement between the parts. Mounted on the crank pin is a sleeve 1, the exterior 2 of which is of part-spherical form and which terminates in flanges 3. The connecting rod end 4 comprises a bearing portion 5 formed internally of partspherical form to engage the sleeve 1 and an I-section attachment portion 6 secured to the connecting rod. The portion 5 and sleeve 1 are retained in engagement by a detachable cap 8 secured in position by screws or bolts 12, the cap transmitting part of the pressure from the crank pin to the connecting rod. A recess in the spherical part 2 of the sleeve is entered by a set screw 14 in the bearing portion 5 of the connecting rod to limit the relative movement. The crank pin 15 is hollow and is provided with a hollow nut holding lubricant, the pin comprising lubricating passages 17, one of which corresponds with a passage 18 in the sleeve.
Patent GB-1186201-A (GB)
Title: The Working of Plastically Deformable Materials.
IPC: B21D3/00
Filed: 1967-04-21
Abstract: 1,186,201. Altering physical structure; making metal articles; twisting; rolling. ROTARY PROFILE ANSTALT. 21 April, 1967 [5 May, 1966], No. 18373/67. Headings B3A, B3E, B3M and B3V. The fibrous inclusions in a material, e.g. steel rod or tube, are fragmented by applying torque to an isolated zone of the heated metal. In one embodiment, Fig. 5, a heated tube 20 is chucked and clamps 28 applied along its length. The chuck 26 is held stationary whilst chuck 24 is rotated and the clamps 28 progressively released so that zones of the tube are progressively isolated and twisted. The clamps 28 may be replaced by a heating coil (32), (Fig. 6, not shown), and a water spray (40) which are traversed along the heated tube. The tube may be simultaneously rolled by skewed rollers (48), (Fig. 7, not shown), traversing the tube, twisting being confined to the zone between the rollers and water spray (50). In another embodiment, Fig. 8, two grippers 62 in each zone 56, 60, 58 co-operate to continuously advance a preheated bar 54, the middle gripper holder 66 being rotated to twist the bar in the middle zone 60. The bar may alternatively be rolled through three pairs of rollers (72, 74, 76), (Fig. 9, not shown), the middle pair (74) of which is caused to orbit; the rollers may be skewed in which case the outer pairs are caused to orbit (Fig. 10, not shown). The bar may be twisted in opposite directions as it is passed between two pairs of skewed rollers (88, 90), (Fig. 11, not shown). Wire (100), (Fig. 12, not shown), may be continuously wound around three side-by-side capstans, the middle of which is caused to orbit. In a further embodiment, Fig. 13, a closed end cylinder 106, e.g. gas pressure tank, is formed by drawing the material between skewed rollers 122 and a sleeve 112 surrounding a movable plunger 110. To effect twisting, one end of the cylinder 106 is clamped at 124 whilst the opposite end is rotated by a headpiece 114 surrounding the sleeve 112. Alternatively, the rollers 122, plunger 110 and clamp 124 may rotate whilst the headpiece 114 is stationary.
Patent GB-422327-A (GB)
Title: Improvements in or relating to carbon sheet holders for typewriting machines
IPC: B41J17/00
Filed: 1934-06-21
Abstract: 422,327. Typewriters. UNITED AUTOGRAPHIC REGISTER CO., 5000, South California Avenue, Chicago, U.S.A. June 21, 1934, No. 18395. Convention date, June 22, 1933. [Class 100 (iv)] Carbon-sheet arrangements.-In manifolding-arrangements comprising a carbon-sheet holder mounted on the platen-carriage and adapted to move forwards with the webs and to be returned by means such as a spring, releasable locking-means is provided for retaining the carbonsheet holder in the rear position while the webs are drawn forwards to strip the carbon sheets. The locking-means may be released by means of a key, or by means of a depressible finger-rest against which the webs are pressed to facilitate severance. In the arrangement shown in the Figure, a bail 26, provided with carbon-holding fingers 20 and guides 22 for the webs 10, is secured to a rock-shaft 14 which is mounted in a yoke 13 on arms 11 on the carriage B. The yoke is provided with fingers 15<a> and rollers 16 engaging a rail 40. The bail 26 is urged rearwards by a spring on the shaft 14, and normally abuts on a yoke 18. When the webs are drawn forwards to strip the carbon sheets, the bail 26 is locked by means of a spring-urged latching-yoke 28 which is pivoted on the arms 11 and has shoulders 31 for engaging pins 32 on the bail. For permitting the bail 26 to move forwards with the webs, the latching-yoke is released by means of a key 47 carried by a bell-crank 45 connected to a rocking bail 42 abutting on an arm 28<a> on the latching-yoke. In an alternative arrangement, the finger-rest 55 is depressibly pivoted and is connected to the bail 42. On release of the latching-yoke, spring-catches 35 engage pins 37 and hold the latching-yoke until the bail 26 is moved forwards by the webs.
Patent GB-278821-A (GB)
Title: Improvements relating to the manufacture of refractories
IPC: C04B35/18
Filed: 1926-07-23
Abstract: 278,821. South Metropolitan Gas Co., and Lamprey, R. H. B. July 23, 1926. Refractory substances-A refractory composition suitable for making gas retorts, &c. comprises tridymitic and quartzitic silica and fireclay which has been purified by elutriation and treatment with acid. The proportion of total silica to clay is such as to produce a desirable reduction of the shrinkage of the clay during drying or burning. The proportion of quartzite is sufficient to counteract the after-shrinkage occurring during use of the product, and the quartzite should be of a kind which undergoes modification into tridymite slowly. To avoid reduction of the softening point the silica should not be too finely divided; #- #" for the tridymite and <1>/8-<1>/40" for the quartz are suitable sizes. A typical composition consists of 40-45 parts of clay, 20-25 of calcined flint (No. 4-No. 8 mesh), 20-15 of calcined flint (No. 8-No. 12 mesh) and 20-15 of sand. Alumina or carborundum may replace the sand.
Patent GB-403450-A (GB)
Title: Improvements relating to the discharging of coal, coke and other solid substances from storage chambers and the like
IPC: C10B31/04
Filed: 1932-06-30
Abstract: 403,450. Shoots; storage chambers emptying from below. BLACKWELL, E. G., 18, Brickfields Road, Worcester. June 30, 1932, No. 18508. [Classes 78 (i) and 78 (iv).] The discharge of material through the delivery aperture b of a storage receptacle a is facilitated by arranging around the aperture a series of bars c of T crosssection. These bars are held together by members d. In a modification the bars are flat and lie radially to the centre of the aperture. Two or more sets of bars may be arranged side by side over a common delivery aperture, and instead of arranging the bars vertically, or at an inclination to the vertical, they may be disposed helically around a cylindrical or elliptical surface. Specification 336,951, [Class 78 (i), Conveyers &c.], is referred to.
Patent GB-843433-A (GB)
Title: Apparatus for moulding or reconditioning pneumatic tyres
Inventor: ADAMS ARTHUR LESLIE
IPC: B29D30/54
Filed: 1956-06-15
Abstract: 843,433. Moulds for tyres. DUNLOP RUBBER CO. Ltd. Feb. 28, 1957 [June 15, 1956], No.18508/56. Class 87(2). A tyre mould, especially for retreads, has a heatable tread ring comprising at least one part for moulding a pattern on the tread and shoulder portions of the tyre ; each part extending the whole of the axial width of the tread ring at any transverse cross-section, and being associated in the mould with heated adjustable plates for contacting the flat mid-wall regions of the tyre and with means for supporting the tyre beads a tread ring 1 comprises a metal band 2, heated by coils 3, and segments 4 having flanges 4a, 4b for moulding the shoulders 13 of tyre 14. Top and bottom plates 5 and 6, heated by coils 7, 8, contact the tyre side walls and are located in a screw press Fig. 2 (not shown). The tyre beads are supported during inflation and curing on a rim 15, and in other modifications the beads are supported by annuli which are forced against the plates or may alternatively be formed integrally with them. Specification 626,316 is referred to.
Patent GB-702290-A (GB)
Title: Interference microscope for the examination of the surface of an opaque body
IPC: G02B21/14
Filed: 1951-08-07
Abstract: 702,290. Interference microscopes. ZEISSOPTON OPTISCHE WERKE OBERKOCHEN GES. Aug. 7, 1951 [Aug. 16, 1950], No. 18540/51. Class 97(1) In an interference microscope a light beam is divided into two by a beam splitter, one of the split beams is reflected at the test object and the other at a comparison surface before being recombined at the beam splitter and each split beam passes through an objective, several pairs of cooperating objectives are provided, the objectives of each pair being of equal focal length and arranged at diametrically opposite parts of a rotatable holder with their optical axes co-inciding and perpendicular to the axis of the rotary holder. As shown a beam from a lamp b is split by the cemented surface of prisms d<SP>1</SP>, d<SP>2</SP>. One split beam passes via prism d3 to a prism d<SP>5</SP> while the other split beam passes via prism d<SP>4</SP> to a prism d<SP>6</SP>. The prisms d<SP>5</SP>, d<SP>6</SP> have a cemented surface inclined at 45 degrees to the plane of Fig. 2 so that the split beams are directed upwardly and downwardly respectively through the objective e<SP>1</SP> of one of several pairs of objectives carried by a rotary holder e. One beam is reflected by the test object h on a stage g while the other is reflected by a comparison surface formed by a mirror in a cap k attached to the other objective. The split beams are recombined at the cemented surface of prisms d', d<SP>2</SP> and interference fringes can be seen through an eyepiece n. The test object may alternatively be supported on a stage i and both stages may be adjustable for focusing.
Patent GB-414886-A (GB)
Title: Improvements in and connected with waste heat boilers and their application in carbonising plants
IPC: F22B1/02
Filed: 1933-06-30
Abstract: 414,886. Indirectly - heated steam boilers. WOODALL-DUCKHAM (1920), Ltd., and REBER, J. W., 136, Victoria Street, London. June 30, 1933, No. 18620. [Class 123 (ii).] A waste-heat boiler associated with a carbonizing plant is longitudinally divided into two sections C<1>, C<2>, with independent draughts one section C<1> receiving heat from hot gases which are derived from the gaseous quenching of hot coke in a chamber A and are afterwards returned to the quenching chamber while the other section C<2> is heated by waste gases from the heating flues B of the carbonizing plant. To enable both sections to be heated solely by gases from either source flues leading to and from the two sections may be crossconnected and provided with dampers.
Patent GB-793058-A (GB)
Title: Improvements in engraving machines
IPC: B44B3/00
Filed: 1955-06-28
Abstract: 793,058. Copy-milling. KUHLMANN, F. June 28, 1955 [June 30, 1954], No. 18657/55. Class 83 (3). In a milling-machine for copying, comprising a pantograph 1 with a stylus 2 movable over a pattern-table 4, the weight of the milling-head 3 is taken by a two-armed lever-system 6, 7 pivotally mounted on the machine-column 9. The arm 6, which is connected to the head 3 through a slide 13 engaging the pantographmember 1a, comprises two relatively-slidable parts 6<SP>1</SP>, 6<SP>11</SP>, whereby the length of the arm can be adjusted, with the aid of a scale 8, according to the size of the required field of coverage. The arm 6 with the head 3 thereon can be disconnected and mounted directly on the column 9 for ordinary milling.