baber/WOPTO huggingface dataset:
Patent GB-248459-A (GB)
Title: Improvements in or relating to crystal rectifiers for wireless reception
IPC: H01L29/00
Filed: 1924-12-03
Abstract: 248,459. McLeod, R. G., and McLeod, W. J. Dec. 3, 1924. Crystal detectors.-Relates to crystal holders of the type in which the crystal and catswhisker are rotably mounted at opposite ends of a containing cylinder or barrel, and wherein one element is mounted eccentrically to the other to facilitatesearching, and wherein provision is made for micrometer adjustment of the pressure of the catswhisker against the crystal. The invention. comprises the following features. The end-plate 22 makes a friction-tight fit into the barrel instead of being screw-threaded. The crystal 31 is held between a push-on cap 30 and a spring 32 carried by a stem 26, which is friction held in the end plate 22, rotation being, allowed by a spring plate 29 and an operating-knob 28. Similar frictionheld end fittings are provided for the end-plate 25 and the eccentrically-mounted catswhiskerholder, the wire contact 40 being carried by a crank-arm 39. The micrometer pressure device 37, 41, 43 is characterized by the fact that the screw 43 works in the metallic end of the cylinder 33 which is screw-threaded for this purpose. Pins 21, 24 on the flanges of the barrel determine the proper position of the end plates 22 and 25 to give the desired eccentric setting. Legs 12, 13 extend through the insulating base 11 and the panel mounting 10 and constitute terminals 19 for - the circuit wiring.
Patent GB-791016-A (GB)
Title: Improvements in feed mechanisms for the sliding supports of machine tools and the like
IPC: B23Q5/34
Filed: 1955-10-13
Abstract: 791,016. Machine-tool details. AKTIE-BOLAGET JOHANSSONS PRESS- & HEJARVERKTYG. Oct. 13, 1955 [Oct. 22; 1954], No. 29189/55. Class 83 (3). Feed mechanism for the slide of a machine tool comprises an externally-threaded feed screw arranged for axial but non-rotatable movement relative to a frame part, an internally threaded, axially displaceable and rotatable inner member engaging the threads of the feed screw, a first feeding device connected to the inner member to rotate it, an outer non-rotatable axially-slidable sleeve connected with the inner member for axial movement therewith, and a second feeding device connected to said outer sleeve for effecting axialmovement thereof and hence axial displacement of the inner member and feed screw. The first feed device, for hand operation, comprises a handwheel 1 and shaft 3 rotating a gear 5 through a pinion 4. The gear 5 consists of a hollow bush with a key 6 engaging a bush 7 secured by a nut 8 to a first sleeve nut 9. The latter engages for a part of its length with a non-rotatable feed screw 24. This feed screw is splined at its forward end to a part of the frame on which the table 43 slides, and its rear end is secured to a piston sliding in an hydraulic cylinder forming part of the slide. The piston and cylinder are used to effect a rapid traverse of the slide. The second automatic feeding arrangement comprises a driven transverse worm shaft 28 (a rack may be used), which rotates a nut 13 having a ball thread connection with an outer non-rotatable sleeve 12. The latter is moved axially and thus, through ballthrust-bearing 11, moves the inner sleeve 9 and feed screw 24 axially to feed the slide. Gauging.-A dial gauge 33 indicates movement of the outer sleeve 12, and thus slide movements, during automatic feed. Preventing backlash.-Play between the moving parts of the system is taken up by a spring 19, acting between a thrust-bearing 21 on bushing 23 screwed to feed screw 24 and the frame.
Patent GB-779226-A (GB)
Title: An improved electric direction indicator for vehicles of all types
IPC: B62J6/00
Filed: 1955-10-13
Abstract: 779,226. Road traffic signals on vehicles. TESSITORE [nee DOGA], G. Oct. 13, 1955 [Oct. 13, 1954], No. 29213/55. Class 118 (2). A direction-of-turn indicator for a motor vehicle comprises an elongated inner movable member 1, having arrow-head shaped ends capable of illumination from within by lamps 6, mounted inside a housing 4 provided with a reversible electric motor for driving the member 1 to project out of the housing on one or other side thereof. The member 1 is provided with grooved top and bottom sides and mounted between spaced ball bearings 5 so as to reduce friction. The motor 9 carries a resilient drive wheel 10 on the outer extremity of its rotor shaft 9<SP>1</SP> which engages the upper groove of the arrow to move it as required. The motor 9 itself is mounted in a central enlarged projection on the front of the housing which also contains certain control switches and may be provided with the brake stop light 25 behind a reflecting lens 24 and the number plate illuminating lamp 26. In the operation of the indicator a manual control switch 14 (Fig. 10) is moved over to its extreme right-hand or left-hand position so that current from a battery 11 or rectified A.C. source is applied to leads 15a, 16a in the appropriate polarity to cause motor 9 to drive member 1 in the required direction. When the member reaches the limit of its travel contacts 8 on it touch similar fixed contacts to complete the lamp circuit at the projecting end and projection 17<SP>1</SP> or 18<SP>1</SP>, as the case may be, opens contacts 17, 18 in the motor circuit. Movement of the member 1 from its central rest position causes arm 21, pivoted at 22 and carrying a roller 23 co-operating with a central clip 1‹ and track 1<SP>1</SP> on the underside of the member, to close contacts 16x, 16y and 15x, 15y (see also Fig. 9, not shown). This prepares a circuit for the cancellation of the indication. To effect this cancellation the switch arm is returned to its central position as shown in full line on Fig. 10 and on its way applies electrical energy through contacts 12b, 13b or 12b<SP>1</SP>, 13b<SP>1</SP> and closed contacts 16x, 16y and 15x, 15y to motor 9 to drive the member 1 back to its central position. When it reaches it roller 23 fits into clip 1‹ and opens the motor circuit.
Patent GB-1475622-A (GB)
Title: Variable pitch axial flow fan
IPC: F04D29/36
Filed: 1975-07-11
Abstract: 1475622 Axial-flow fans WESTERN ENG & MFG CO 11 July 1975 [17 July 1974] 29269/75 Heading F1C A variable-pitch axial-flow fan comprises an axially movable actuator 78 connected by arms 62 to the stems of the blades 52, the axial movement being effected via an axially movable actuator shaft 26 and a pivoted lever 28 which projects through an opening in the fan housing 14 and may be operated by an air cylinder 30 in accordance with air-pressure or flow. The blades 52 are pivotally mounted in bearing sleeves 50 carried in openings 48 formed partly in a hub disc 54 and partly in an annulus 56 bolted to the hub disc. A spherical roller bearing 96 accommodates the slightly non-linear movement of the actuator shaft 26. Each lever 62 is connected to its blade 52 by a bolt 64 and two pins 60 and carries a stub shaft 68 which is journalled in a bearing 72. The bearings 72 are held in place by a clamping ring 80. The actuator 78 is guided in its axial movement by sliding engagement with a cylindrical stub 88 projecting from a member 90 bolted to the impeller hub.
Patent GB-216052-A (GB)
Title: Improvements in or relating to feed control apparatus for conveyers, elevators or the like
IPC: B65G47/00
Filed: 1923-11-20
Abstract: 216,052. General Electric Co., Ltd., and Marshall, C. H. Nov. 20, 1923. Discharging and feeding devices for endless belt conveyers.-When the shoot a, a<1>,which conveys material from a conveyer c to a conveyer d, becomes choked, the hinged part b of the inclined portion a becomes displaced and moves the arm n of the switch k to cut off the supply of current to the motor m driving the conveyer c. The part b is normally maintained in the upper position by a counterweight j.
Patent GB-1224923-A (GB)
Title: Scanning systems for reading code data from record members
Inventor: MCMILLEN LAWRENCE R
IPC: G06F11/10
Filed: 1968-06-19
Abstract: 1,224,923. Sensing records. ADDRESSOGRAPH MULTIGRAPH CORP. 19 June, 1968 [19 June, 1967], No. 29309/68. Heading G4M. The outputs of elements 30-37, e.g. photocells sensing data marks on a card, are blocked at gates 70-77 for one character interval if a parity condition is satisfied, and are blocked for a shorter interval if parity is not satisfied, so as to allow multiple sensing to take place. At the start of a card feed cycle, one-shots 131, 135 are set to enter a first special code into the first stage 101-107 of a shift register. One-shot 136 provides shift pulses on the setting of 131 and the subsequent relapse of one-shot 135, a second special code being entered.in the shift register from one-shot 131 alone. The passage of the card leading edge past photo-cell 30 sets bi-stable 149 to gate the output of a synchronizing disc photo-cell 42 which selects the card data fields. Sensing of a data character sets selected triggers 80-87, OR gate 117 and one-shots 118, 119 produce an interrogation pulse for gates 121, 126 and a short blanking pulse for gates 70-77. A non-parity condition determined by gates 111, 112 causes gate 126 to reset triggers 80-87 so that a further sensing attempt can be made when one-shot 119 relapses. A parity condition causes gate 121 to set one-shots 122, 123, the former providing a long blanking pulse for gates 70-77 and the latter producing a shift pulse via one-shots 136, 141. When the last character has been sensed, photo-cell 42 resets 129 to hold triggers 80-87 reset. As the card trailing edge nears the sensing station, a cam switch resets a card feed flip-flop so that one shot 133 is set to enter a further special code in the shift register. Subsequently a clock source is gated to shift out the data in the shift register to an output device, e.g. a printer or punch, and on completion of its cycle, the output device initiates a new card feed cycle. Since non-parity characters are not entered in the shift register, the number of characters stored at the end of a card-sensing operation will be incorrect, and this condition may be detected as described in detail in Specification 29310/68.
Patent GB-464979-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
IPC: H04N5/16
Filed: 1935-10-23
Abstract: 464,979. Television. BAIRD TELEVISION, Ltd., and WILLANS, P. W. Oct. 23, 1935, No. 293r3. [Class 40 (iii)] Recurrent maxima or minima are introduced in a complex signal while the directcurrent component is still present, the signal is amplified in an amplifier 1, which suppresses the direct-current component, and the directcurrent component is reinserted by rectifying the pulses produced, by the introduced maxima or minima. Two valves V1, V2 with screening- grids have their anode-cathode paths in parallel, and the control grid of V1 receives the complex signals, while the screening-grids receive pulses which render the valves alternately operative, thus mixing periodic impulses of constant peak value with the television signal. The valve V2 has a source of bias for the controlling- grid, which is varied to match the valves. After reinsertion of the direct-current component, a filter or compensating circuit 2 eliminates the recurrent maxima or minima, which were artificially introduced in the signal. Specification 406,672 is referred to in the Complete Specification and Specification 464,828, [Group XXXVI], in the Provisional Specification.
Patent GB-262106-A (GB)
Title: Improvements in or relating to internal combustion engines provided with exhaust turbines and precompressors
IPC: F02B37/02
Filed: 1926-11-22
Abstract: 262,106. B³chi, A. Nov. 30, 1925, [Convention date]. M o t o r power plant.-In an internal - combustion engine having a precompressor and an exhaust turbine, the dimensions of the exhaust conduit between the engine and the turbine, the entrance cross-sections of the turbine, and the control of the discharge of the exhaust gases are such that after the start of the exhaust period the pressure in front of the turbine rises to a high value which is maintained during the greater part of the exhaust period of the cylinder in question and falls to its lowest value only at the end of the exhaust or the beginning of the following inlet period. At normal loads the lower pressure limit is lower than the charging air pressure. The moment of discharge of the next cylinder must be sufficiently delayed to allow of the low pressure being reached. For this purpose in the eight-cylinder engine shown the exhausts are arranged in two sets, each set comprising the cylinders with cranks at 180‹ or parallel, and exhaust to two separate turbines 23, 24. The inlet and exhaust valves of a cylinder are both open during the low pressure period to give a scavenging effect. The turbine may drive the precompressor.
Patent GB-238116-A (GB)
Title: Improvements in reciprocating electro-magnetic motors
IPC: H02K33/00
Filed: 1924-12-09
Abstract: 238,116. Japolsky, N., and Kostenko, M. Dec. 9, 1924. Addition to 214,393, [Class 35, Dynamo-electric generators &c.]. Percussive hand tools.-In a reciprocating electromagnetic motor of the type described in the parent Specification, the reciprocating element is operated synchronously, i.e. its velocity is substantially equal to that of the moving magnetic field. The stator core 2 consists of an iron or steel tube provided with peripheral slots A for the polyphase windings 3 and axial slits B, Fig. 4. The slits B, of which one B' is cut through the tube, serve to damp out eddy currents. Alternatively, the core may consist of rings of flat and angular sections made of laminated iron. The armature consists of a part 7 which strikes the tool 13, magnetic parts 5, and non-magnetic pieces 6 spaced apart at distances corresponding to the pole-pitch of the magnetic field produced by the stator winding, and axial slits 14 may be formed therein. In a modification, the moving element is provided at the rear with a piston so that on the return stroke the air under the piston is compressed. The armature may comprise a flat board moving between two stators and having magnetic pieces thereon displaced by a pole-piece.
Patent GB-773487-A (GB)
Title: Centrifugal apparatus for separating solid particles out of a liquid
IPC: C01D3/00
Filed: 1955-10-17
Abstract: 773,487. Centrifugal separators. LAGUILHARRE. P. R. Oct. 17, 1955 [Nov. 9, 1954], No. 29591/55. Class 23 In a centrifugal separator for separating solids from liquid comprising two or more rotary drums 1, 2, 3 arranged in series and in which rotate at a different speed con-- veyer screws 4, 5, 6, washing liquid is introduced into the last drum 3 and passes through the drums in counter flow to the movement of the solids to be discharged with the liquid separated in the first drum 1 or, alternatively, where there are more than two drums to be discharged from the second drum 2. The suspension to be separated is, fed from a pipe 8 to thedrum 1. Liquid is discharged from the drum 1 through an outlet 12 which may be provided with a baffle to prevent discharge of solids. The solids are discharged from the drum 1 to the drum 2 to be mixed with and separated from washing liquid discharged from the drum 3. Washing liquid is introduced into the drum 3 by a pipe 9 to mix with solids discharged from the drum 2. The solids separated from the washing liquid in the drum 3 are discharged through an outlet 15. The washing liquid is discharged from the drum 3 by a tube 11 into the drum 2, and passes from the drum 2 to the drum 1 through a tube 10 to be finally discharged with the separated liquid through the outlet 12. The drums may be of different diameters and lengths, the length of the drum 1 preferably being greatest.
Patent GB-876242-A (GB)
Title: Improvements relating to arc-control devices for high-voltage oil circuit-breakers
Inventor: SIMPSON GEOFFREY KENDALL
IPC: H01H33/75
Filed: 1957-09-23
Abstract: 876,242. Liquid blast switches. REYROLLE & CO. Ltd., A. Dec. 19, 1958 [Sept. 23, 1957], No. 29853/57. Class 38 (5). The arc-control chamber of a small-oilvolume circuit-breaker comprises a stack of separate superimposed insulating discs . . . . 17 clamped between an insulating moulding 18 and a bottom plate 20, the arc drawn between a fixed contact 19 and a moving contact 22 being expelled through lateral vents 25. Each disc comprises a number of laminations of compressed vulcanized fibre, each in the range 0.005 to 0.1 inch thick, bonded together by intervening layers of epoxy resin adhesive, each layer being in the range 0.0005 to 0.005 inch thick, the exact values chosen for a particular disc being uniform. The resin is of high dielectric strength and the proportion of resin to fibre is graded down the stack to correspond with the electrical stress between contacts 19, 22, being a maximum in discs 10, 11, and a minimum in discs 14 . . . 17. Also the thickness of the individual fibre laminations in discs 10 . . . 13 is less than that in discs 14 . . . 17 to reduce the burning effect on the fibre in the hottest regions of the arc.
Patent GB-412091-A (GB)
Title: Improvements in a process of obtaining cement, concrete or compounds thereof containing arsenical combinations
IPC: C04B22/06
Filed: 1933-10-27
Abstract: Arsenic is added to cement, when the cement is being ejected, e.g. from a cement gun, at the place of deposit, to cause it to set rapidly with evolution of heat.  As2O3 is an example given of a compound which may be used in this connection and 2, 3 or 4 parts of this compound with 10 of cement and 30 of sand are the proportions in which the ingredients for the mixture are used.
Patent GB-336089-A (GB)
Title: Improvements in boilers for heating water
IPC: F24H1/34
Filed: 1929-10-03
Abstract: 336,089. Russell, E. Oct. 3, 1929. Block-form boilers.-The bottom e of the boiler or the surface impinged on by the flames is corrugated, the recesses c of the corrugations being inclined upwards and away from the point where the flames first impinge and the ridges of the corrugations being provided wtih inclined ribs d. Condensed moisture runs along these ribs and is thus caused to drop clear of the burner b.
Patent GB-865383-A (GB)
Title: Adhesive tapes
IPC: C09J7/21
Filed: 1957-09-24
Abstract: An adhesive is made by curing a composition comprising a curable natural or synthetic rubber, a tackifier which is liquid at and above 25 DEG C. in an amount from about 50 to about 500 parts by weight per 100 parts by weight of the elastomeric polymer, and a phenolic resin for curing said polymer in an amount from about 5 to about 75 parts by weight per hundred parts by weight of elastomeric polymer, said liquid tackifier being in an amount at least equal to that of the phenolic curing agent.  Specified elastomeric polymers are natural and reclaimed rubber, butadiene-styrene copolymers, isobutylene-isoprene copolymers and polychloroprene.  Specified tackifiers are liquid polyisobutylenes, broken chain butene resins, liquid polyterpenes, liquid p-coumarone-indene resins, liquid rosin derivatives, hydroabietyl alcohol, liquid petroleum polymers and liquid styrene derivatives.  Specified phenolic resins are condensates of formaldehyde with p-butyl phenol, p-t-amyl phenol or p-phenyl phenol.  Reinforcing pigments or fillers which may be included in the compositions are zinc oxide, calcium carbonate and calcium hydroxide.  Various formulations are exemplified.  The cured compositions are used in adhesive tapes.  U.S.A. Specifications 1,800,295, 1,800,296, 1,996,069, 2,058,797, 2,079,210, 2,101,944, 2,112,022 2,123,898, 2,139,081 and 2,211,048 are referred to.
Patent GB-1512446-A (GB)
Title: Internal combustion engines having exhaust gas reaction chambers
IPC: F02M31/08
Filed: 1975-07-17
Abstract: 1512446 I C engine exhaust passages and reactors HONDA GIKEN KOGYO K K 17 July 1975 [22 July 1974] 30098/75 Heading F1B The exhaust passages from the valve ports to a thermal reactor B have heat resistant liners of stainless steel, pairs of exhaust passages in the head having liners 17 converging to a single outlet communicating with a single exhaust collection pipe having a liner 15.
Patent GB-1056440-A (GB)
Title: Apparatus and process for the decomposition of a metal amalgam
Inventor: COTTAM RONALD GEOFFREY
IPC: C25B1/42
Filed: 1964-07-29
Abstract: <PICT:1056440/C1/1> In a process for the reaction of water or an aqueous solution and an alkali-metal amalgam, the apparatus comprises an intersticed layer of a metal, wettable by, but not attacked by, the said amalgam in combination with a layer of material promoting decomposition of amalgam, the apparatus being adapted to allow the amalgam to permeate the intersticed layer of metal while flowing in the plane of the said metal and also being adapted to provide electrical contact between the material promoting decomposition and amalgam distributed within the intersticed layer.  The intersticed layer may be built up of a plurality of perforate or reticulate plates, or of one or more intersticed sheets. The amalgam-decomposing material may be graphite, titanium, zirconium, vanadium, chromium, molybdenum, tungsten or alloys of one or more of these metals. Electrical contact between the layer of amalgam-decomposing material and the amalgam may be achieved by connecting electrical conductors to the metal from the said material such that the amalgam flows over the said conductors, or conducting elements may be embedded in the material and project into the amalgam.  Alternatively, a layer of conducting material such as wires, strips or mesh may separate the said amalgamdecomposing material from the metal layer. The temperature of the reaction may be 80-150 DEG  C. In the diagram 1 is a graphite plate and 2 is a sheet of expanded metal.  Amalgam passes into a trough at the top of 1 and overflows over the plate 2.  Water enters at 6 and aqueous sodium hydroxide leaves via 7 and amalgam via 8.
Patent GB-173649-A (GB)
Title: Improvements in the magnetic circuit of electrical motors and dynamos
IPC: H02K1/14
Filed: 1920-10-25
Abstract: 173,649. Robinson, H. Oct. 25, 1920. Pole-pieces, cores, and yokes.-A field magnet for dynamos and motors comprises a number of C-shaped elements c each formed of several thicknesses of sheet metal and with magnetizing coils e slipped over the ends and on to the yoke portion. The C-shaped elements are assembled together on a circular housing so that the polepieces of the same polarity are adjacent and form a single pole. The poles are provided with integral pole-tips embracing a substantial percentage of the pole arc. The elements c are positioned within the housing by means of ribs h.