baber/WOPTO huggingface dataset:
Patent GB-1175502-A (GB)
Title: Improvements in Hydraulic Circuits for Torque Transmissions
IPC: F16H61/02
Filed: 1968-02-05
Abstract: 1,175,502. Change-speed gear and control. TWIN DISC Inc. 5 Feb., 1968 [13 Feb., 1967], No. 48570/68. Divided out of 1,175,501. Heading F2D. The subject-matter of this Specification is identical with that of the parent Specification but the claims relate to the hydraulic control circuit.
Patent GB-1405478-A (GB)
Title: Reciprocating piston pump
IPC: F01B3/04
Filed: 1972-10-23
Abstract: 1405478 Reciprocating pumps DANFOSS AS 23 Oct 1972 [3 Nov 1971] 48688/72 Heading F1A     In a pump in which pistons 18, Fig. 1, are reciprocated by a cam-track 14 when a cylinder block 16 is rotated with respect to a valve-plate 4, the face of the cam 14 is shaped as shown in Fig. 2, i.e. portions a-b and b-c are parabolic and of opposite curvature and b-c is longer than a-b, preferably 1.5 to twice as long. Portions o-a, c-d and f-o are flat. Nine pistons 18 1 -18 9  are preferably provided. Alternatively, Fig. 3 (not shown), seven pistons may be provided.
Patent GB-1443968-A (GB)
Title: Trailer vehicle brake control valve units
IPC: B60T15/24
Filed: 1973-10-19
Abstract: 1443968 Trailer brake relay valve assembly ROBERT BOSCH GmbH 19 Oct 1973 [20 Oct 1972] 48807/73 Heading F2F A trailer vehicle brake control valve unit is operable to control the pressure in a trailer brake line 26 in dependence upon the brake pressure in at least one of two tractor brake lines 5, 10 or in dependence upon the pressure in a spring-loaded brake-operating mechanism circuit. The valve unit comprises two brake pistons 2, 3, a brake pressure chamber 6 above the piston 2 being connected to brake line 5 and a brake pressure chamber 11 located between the pistons 2, 3 being connected to brake line 10. An atmospheric air chamber 15 is located on the other side of piston 3 and within chamber 15 is arranged a stressed spring element comprising springs 17 acting on the outer piston part 20 of a two-part retroactive piston 20, 21. Inner piston part 21 which is acted upon by a spring 22 is mechanically connected to piston 3 by axial extensions 19. The piston 20, 21 forms the movable wall of a pressure charge chamber 27 connected to the trailer brake line 26 and a fixed wall 28 of the chamber 27 carries an inlet valve seat 29 of a double-seat valve 29, 30, 31 whose outlet valve seat 30 is formed on the piston part 21. The valve closure member 31 of the double seat valve 29, 30, 31 has a sealing lip 31<SP>1</SP> by means of which the closure member 31 slides on a tubular member 32. The tubular member 32 has at least one radial opening 37 for connecting the chamber 27 to atmosphere; the tubular member 32 has a flange 33 by means of which it can act upon the piston part 21, and the tubular member 32 carries a piston member 34 one side of which is subjected to the supply pressure of air supplied to a chamber 35 and the other side of which is subjected to the pressure of air in a chamber 36 connected to the spring-loaded brake operating mechanism circuit. In use, pressurization of one or both brake lines 5, 10 causes piston 3 to move (with or without piston 2) and via axial extensions 19 the piston part 21 is moved to close outlet valve 30, 31 to cut off communication between the atmospheric air and the trailer brake line 26, and thereafter open inlet valve 29, 31 to connect chamber 27 to chamber 35 to cause compressed air to flow to trailer brake line 26. The pressure in the trailer brake increases steeply relative to the increase in pressure in the tractor brake until the brake piston 3 abuts an annular shoulder 23 on the outer piston part 20 whereafter the piston 20, 21 acts as though it were one piece and the lead of the trailer brake pressure is terminated. In response to a drop in pressure in the spring- brake operating mechanism as caused by a defect or deliberately by a parking brake valve or auxiliary brake valve the piston 34 and tubular member 32 move downwardly; the flange 33 pulls piston part 21 downwardly to change over the double seat valve 29, 30, 31. The reactive effect upon the piston member 34 is effected solely by the inner piston part 21: this reduces the lead of the trailer brake pressure.
Patent GB-1433188-A (GB)
Title: Apparatus for packaging a material
IPC: B65B31/02
Filed: 1973-10-19
Abstract: 1433188 Vacuum packaging STANDARD PACKAGING CORP 19 Oct 1973 [29 Jan 1973] 48844/73 Heading B8C Vacuum packaging apparatus comprises means for depositing material in a recess 40 of a first package member, means partially sealing a closure member 52 to the first member, means for evacuating the package through an unsealed portion, means 102 for sealing that portion, and means venting the evacuation means. A plastics web is fed on to a chain conveyer, heated, and then vacuum formed into dies 14 in the conveyer, each die having two cavities 64. After filling and partially sealing a cover web to each recess 40 each die passes under a vacuum chamber 80 which is lowered on to the die. Air is evacuated through channels 94 in opposite sides of the chamber 80, and also through the base of each die 14 and a small amount through an opening 82 in the top of the chamber. Passage of liquid from the package is thus prevented over the sealing means 102. The chamber is vented by air passing in through the opening 82 and flowing into the channel 94 to carry any liquid therein to a trap.
Patent GB-1429203-A (GB)
Title: Air conditioning
IPC: F24F11/00
Filed: 1973-10-22
Abstract: 1429203 Ventilating unit TEMPERATURE Ltd 22 Oct 1973 49042/73 Heading ASA [Also in Divisions F3 and F4] A ventilating unit comprises a housing 1 having a fresh air inlet, an outlet 2 for delivering the fresh air to a reversible cycle heat pump unit of an air conditioning installation described in UK specification 992621, a room air inlet and a room air outlet 4 to the external atmosphere, two ducts respectively connecting the fresh air inlet and outlet and the room air inlet and outlet, a filter in the fresh air duct, a fan 14 common to both ducts, and electrically operated dampers actuable to permit intake of fresh air and to prevent extraction of room air, or vice versa. In the form shown, pivoted flaps 6, 17 are spring biased to positions closing the fresh air inlet, and the room air inlet and outlet respectively. Actuation of a solenoid 11 moves the flap 6 to a position opening the fresh air inlet and actuation of a solenoid 19 moves the flaps 17 to a position opening the room air inlet and outlet. Room air extraction may be begun automatically in response to detection of fire or smoke. The casing 1 is lined with sound absorbing material which like the filter (12, Fig. 2) is an expanded plastics material treated so as to have flame-retarding properties.
Patent GB-1129265-A (GB)
Title: Improvements in graphite brick structures
Inventor: TRIGGS GEOFFREY WILLIAM
IPC: G21C5/16
Filed: 1964-12-04
Abstract: 1,129,265. Moderator structures. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 24 Nov., 1965 [4 Dec., 1964], No. 49530/64. Heading G6C. In a nuclear reactor moderator brick 11a the projection 19 fits within the groove 20 of the upper brick 11b. Relative angular movement of the bricks is accommodated by the curved surfaces, 24, of 19, Fig. 2. The surfaces 24 meet the plane surface 22 at the parallel straight edges 23 above which the blocks may rotate. The intersticial bricks 13a, 13b, Fig. 3, have a similar supporting face 28 on tile 25.
Patent GB-1172698-A (GB)
Title: New 1,2alpha-Methylene-Steroids
IPC: C07J53/00
Filed: 1966-11-07
Abstract: 1,172,698. Steroids. SCHERING A.G. 7 Nov., 1966 [9 Nov., 1965], No. 49779/66. Heading C2U. The invention comprises compounds of the general formula in which R represents a hydrogen atom or an acyl group and C 6  = C, represents a single or double bond and a process for preparing the #<SP>4</SP> and #<SP>4,6</SP> compounds from the corresponding pregnane compounds by introducing double bond(s) therein, e.g. with selenium dioxide, or with 2,3-dichloro-5,6-dicyanobenzoquinone or by forming a 4-bromo compound and dehydrobrominating. The pregnane compounds may be obtained by hydrogenating #<SP>5</SP>-pregnene-3#, 17α, 19-triol-20-one-17-acetate to obtain 5α- pregnane-3#, 17α,19-triol-20-one- 17-acetate, oxidizing the latter to obtain 5α-pregnane -17α, 19-diol-3,20-dione-17-acetate, treating the latter with acetic anhydride to form 5α-pregnane-17α, 19-diol-3,20-dione-17,19-diacetate, brominating the latter to form 2#-bromo-5α-pregnane-17α, 19 - diol - 3,20 - dione - 17,19 - diacetate, dehydrobrominating the latter to form #<SP>1</SP>- 5α - pregnene - 17α,19 - diol - 3,20 - dione - 17,19-diacetate, treating the latter with an ion exchange resin to form #<SP>1</SP>-5α-pregnene-17α, 19 - diol - 3,20 - dione - 17 - acetate, oxidizing the latter to form #<SP>1</SP>-5α-pregnene-17α-ol 3,20 -dion-19-al-17-acetate, treating the latter with sodium hydroxide to form 19-nor-#<SP>1</SP>-5α-pregnen-17α-ol-3,20-dione 17-acetate, hydrolising to form 19-nor-#<SP>1</SP>-5α-pregnen-17α-ol-3,20-dione, treating the latter with trimethyl #sulphoxonium iodide and sodium hydride to form 1,2α- methylene - 19 - nor - 5α - pregnan - 17α - ol - 3,20-dione and acylating the latter to form the corresponding 17-acylate. Pharmaceutic compositions having gestagenic action and containing the above #<SP>4</SP> and/or #<SP>4,#</SP> unsaturated compounds are administered orally or parenterally.
Patent GB-1294768-A (GB)
Title: 2-PHENYLAMINO-Delta<1>-PYRROLINES AND THEIR USE AS ACARICIDES
Inventor: ENDERS EDGAR
IPC: A01N43/36
Filed: 1970-10-21
Abstract: 1294768 2 - Halophenylamino - #<SP>1</SP> - pyrrolines BAYER AG 21 Oct 1970 [23 Oct 1969] 50005/70 Heading C2C Novel 2 - halophenylamino - #<SP>1</SP> - pyrrolines of the general formula wherein X and Y are each a halogen atom or a C 1-4  alkyl group, provided that at least one of X and Y is a halogen atom, and R is a C 1-8  alkyl or C 1-8  alkenyl group, and salts thereof are prepared by condensation of a haloaniline of the general formula with pyrrolidone-(2) in the presence of an agent which splits off water, followed optionally by salification of the product. Acaricidal compositions comprise, as active ingredient, a 2-halophenylamino-#<SP>1</SP>-pyrroline of the first general formula above or a salt thereof, in admixture with a solid or liquid diluent or carrier and optionally a surfactant.
Patent GB-1493585-A (GB)
Title: Method and apparatus for sorting cards with coded vertical edge
IPC: G06K21/00
Filed: 1974-11-20
Abstract: 1493585 Edge-coded-card selector GAF CORP 20 Nov 1974 [30 Nov 1973] 50248/74 Heading G4M Cards having regularly spaced notches and tabs along an edge which, in use, is vertical has selected tabs removed to code the card. A set of cards is placed in a selector mechanism with their lower edges resting on supports 20, 21 and with their coded rear edges aligned. A bar 25 which in the initial position has its lower edge below a line A corresponding to the lower edges of the cards is raised to engage the lower surface 15 of a notched portion of the cards and to raise the cards. The cards pivot about corner 23 and when raised the coded edge is parallel to line B-B (Fig. 2A) and the notches are aligned with selector bars CB 101-150. Selected bars are moved to engage in the notches. Bar 25 is lowered and a brush 35 is rotated to lower the cards in which the tab above the moved selector bar has been removed until the so-selected cards rest on supports 21, 20. Bar 25 is then moved to the left to engage edge 14 of the notch 13 and move the selected cards to the left. Bar 25 engages the lower surfaces of the raised cards so that the selector bars can be retracted. In an alternative embodiment (Fig. 7) support 120 is tilted to raise the cards and bar 125 is raisable to the dotted position and movable to the left to eject the selected cards. Support 21 or 121 is movable with the ejected cards.
Patent GB-1243521-A (GB)
Title: Improvements relating to sealing tube ends
Inventor: ALLEN PETER GEORGE WILLIAM
IPC: B21D26/14
Filed: 1968-11-13
Abstract: 1,243,521. Pipes and tubes. A. REYROLLE & CO. Ltd. 12 Feb., 1970 [13 Nov., 1968], No. 50265/68. Heading F2P. [Also in Divisions B3 and H1] A method of sealing the end of a tube 10 connected to a vessel 12 comprises inserting a plug 27 in the end of the tube within an enclusure 20 and necking the tube on to the plug by a process controlled from outside the enclosure. The exhaust tube of a vacuum switch, Fig. 1 (not shown), may be sealed or the filling tube of a bottle containing air or other gas under pressure, e.g. a switch bottle containing SF 6  gas. Apparatus for performing the method may have an electromagnetic forming coil for each of the vessels in the enclosure, capacitor banks being discharged simultaneously or in succession through the coils. As shown, the apparatus has a single forming coil 28 and the vessels 12 are indexed beneath the coil on a turntable 21. With the chamber 20 housed in an oven to ensure de-gassing, it is evacuated by a pump. Atop the chamber 20 is an indexable turret 23 containing hydraulic rams 24 which carry the plugs 27. After the forming coil 28 has been lowered, the aligned ram inserts a plug 27 and holds it in position during the necking operation. The ram and forming coil are then retracted and the turntable 21 and turret 23 indexed for sealing the next vessel. Instead of hydraulic rams 24, a solenoid may attract the plugs 27 out of a magazine in the turret and hold them in position. If the switch bottles are to be gas-filled, a lower degree of evacuation is used and a lower temperature for removing moisture. After cooling, SF 6  gas is introduced under pressure. The necking operation may be performed hydraulically or mechanically.
Patent GB-1247699-A (GB)
Title: Photographic apparatus handle adapted to contain a battery
Inventor: TAYLOR WALTER EDWARD
IPC: G03B17/56
Filed: 1968-10-25
Abstract: 1,247,699. Battery cases. EASTMAN KODAK CO. 25 Oct., 1968 [30 Oct., 1967], No. 50830/68. Heading H1B. [Also in Division G2] A battery case/handle 12 for photographic apparatus 10 is formed of two complementary recessed ports 14, 16 into which the cells 42, 44, 46, 48 can be inserted when the handle is open and which contain, in the recesses, contacts for connecting the cells to form a battery, and terminals 82, 84 for providing external connections to the battery. As shown the cells are connected in series, cells 42, 44 being connected by member 62. Closure of the halves 14, 16 of the handle makes contact between contacts 100, 102 on insulating post 104 and extension pieces 106, 108 (Fig. 2, not shown) on contacts 58, 60 thereby connecting cells 42, 48 and 44, 46 respectively. Terminal 82 makes sliding contact with a conductor 114 (Fig. 6, not shown) surrounding but insulated from conductive shaft 110 mounted on conductive cover wall 26. Shaft 110 is received by hole 40 in bosses 34, 36, 38 of the handle which rotates thereon between two locked positions, and is contacted by terminal 84 (Fig. 5). The motor of the apparatus is connected via the body of the apparatus and shaft 110 to terminal 84 and via an extension piece 118 to conductor 114 to terminal 82 (Fig. 6, not shown). The apparatus may be a motion picture camera or projector.
Patent GB-1468390-A (GB)
Title: Method and device for controlled cooling of rolled stock
IPC: C21D1/00
Filed: 1974-11-25
Abstract: 1468390 Cooling rolled stock STAHL-UND WALZWERK WILHELM FLORIN 25 Nov 1974 [10 April 1974] 50878/74 Heading B3M Rolled stock is cooled by passing it axially through a tube 2 which is fed with cooling water from inlets 1, the water then passing through a centre drain 3 and to valves 6 which control the flow to baffled chambers 4. In an example, rolled steel bar of 12 mm. diameter and containing 0À12 to 0À20% carbon was cooled from 960‹ to 620‹ C. in 0À5 sees. using 50 m.<SP>3</SP>/hr. of cooling water.
Patent GB-1332804-A (GB)
Title: Knitting machine accessories
IPC: D04B9/46
Filed: 1970-10-28
Abstract: 1332804 Knitting-machines L BENVENUTI and V MORELLI [trading as MANIFATTURA DI STABBIA DI BENVENUTI LAMBERTO E MORELLI VITALIANO Snc] 28 Oct 1970 [6 Nov 1969] 51097/70 Heading D1C In a method of knitting a stocking toe of a closed welt construction the binding yarn F1 is engaged by a recess 23A of a hook 23 moved radially between the cylinder and welt dial. Provision of the hook obviates the need for raising the dial to clear the yarn. The hook may alternatively comprise a rotatable flat plate. The toe may be closed at the commencement or termination of the stocking.
Patent GB-1072290-A (GB)
Title: Control circuit for heat exchange unit with auxiliary electric heater
IPC: G05D23/19
Filed: 1965-12-02
Abstract: 1,072,290. Automatic temperature control. TRANE CO. Dec. 2, 1965 [May 7, 1965], No. 51226/65. Heading G3R. An automatic temperature control system for an air conditioning unit comprises a single heat exchange coil through which a hot or cold fluid may be circulated to provide heating or cooling of a space in winter or summer respectively, the system also comprising an electric heating device which is operative only during the summer should the temperature of the space fall below a desired minimum value. An air conditioning unit 1 comprises a fan 4 which blows air over a heat exchange coil 2 and an electric heater 22 the air from the conditioned space entering the unit 1 by an opening 8, passing over a temperature sensing bulb 46 and returning to the space by an opening 10. Fluid is supplied to the heat exchange coil 2 from a supply pipe 12 by way of an electrically operated control valve 16, the supply pipe 12 having a temperature sensing bulb 58 associated therewith and operative by way of a diaphragm 64 to position a switch 50 in either its 50 (summer) or 80 (winter) position according to whether cold or hot fluid is being circulated in the pipe 12. The bulb 46 sensing the temperature of the air entering the unit 1 from the conditioned space is operative to control a switch 24 by way of a diaphragm 42. With the switches 24, 50 in the positions shown - that is with the bulb 58 sensing cold water in the pipe 12 under summer conditions and the bulb 46 sensing less than a minimum temperature, say 70F., a relay 71 is energized by way of switch arms 26, 52 and a safety device 68 to close contacts 72 thereby energizing the electric heater 22 to cause warmed air to circulate in the conditioned space. When the temperature sensed by the bulb 46 is between 72-75F. the diaphragm 42 operates to move switch arm 26 from contact 28 to contact 30 without movement of switch arm 32 the movement of switch arm 32 de-energizing heater 22. When the temperature sensed by the bulb 46 is above 76F. the diaphragm 42 operates to move the switch arm 32 to contact 36 whereupon the control valve 16 is energized by way of switch arms 26, 32, 52, so as to admit cold water to the heat exchange coil 2. In winter with hot water in the supply pipe 12 the bulb 58 causes the diaphragm 42 to move the switch 52 to its 80 position whereupon the heater element 22 is disabled and the heating control is by way of switch arm 26 only through control of the valve 16. If desired the switch 50 may be manually operated. A controller 74 may be provided to give the fan 4 two speeds.
Patent GB-1210406-A (GB)
Title: Acquisition technique for time division multiple access satellite communications system
IPC: H04B7/212
Filed: 1967-11-13
Abstract: 1,210,406. Multiplex pulse signalling. COMMUNICATIONS SATELLITE CORP. 13 Nov., 1967 [16 Nov., 1966], No. 51500/67. Heading H4L. In a pulsed time division multiplex system in which a plurality of ground radio stations intercommunicate via an orbital satellite relay station, each ground station being assigned a particular time slot in the satellite's time frame a ground station commences operations by sending to the satellite a train of access pulses each of which is of lower power and longer duration than an information pulse. Said access pulses are received at each ground station after relaying and are separated from the information pulses by means of a narrow band filter 10, Fig. 2, the output of which is applied to the vertical input of an oscilloscope 12. The received signal input is also applied through a phase shift keying demodulator 14 to a decoder 16, which detects the repetition in each time frame of the preamble signal of a master station, and controls the horizontal scanning of the oscilloscope. Consequently, the access pulse 18, Fig. 3, appears brightly on the oscilloscope display against the fainter information signals from other stations D, F. Its phase is then adjusted until it is at the beginning of the assigned time slot E, when normal transmission may be commenced.
Patent GB-1145870-A (GB)
Title: A semiconductor laser device
IPC: H01S5/026
Filed: 1966-11-17
Abstract: 1,145,870. Semi-conductor diode lasers. HITACHI Ltd. 17 Nov., 1966 [26 Nov., 1965; 24 Oct., 1966], No. 51607/66. Headings H1C and H1K.  In a semi-conductor junction diode laser comprising a PN junction formed in a block of semi-conductor material a further PN junction is formed in the block for forming a variable depletion layer thereabout so as to establish a light attentuating region lying in the path of the laser beam. By varying the voltage across the variable depletion layer modulation of the laser beam may be obtained. Such a laser is as shown in Fig. 2 and comprises an N-type gallium arsenide wafer 1 into which zinc is diffused to provide two P-type regions 2a, 2b forming junction planes 3a, 3b. During the manufacture a plurality of P-type regions 2a, 2b are formed on a single wafer which is split up into the devices shown in Fig. 2 by first cleaving in a direction perpendicular to the P-type regions and then in a direction parallel thereto. Nickel and indium are then electroplated on the lower surface to form electrode 8 and nickel is electroplated on the regions 2a, 2b to provide electrodes 8a, 8b. The junction 3a is forward biased to produce a laser beam which oscillates in the cavity formed by polished faces 4, 5, the faces 6, 7 being roughened to suppress oscillations, and the junction 3b is reverse biased to form a depletion layer, the effect of which is to introduce losses into the cavity and attenuate the laser light. By varying the bias on junction 3b the amount of modulation produced can be changed. In the arrangement of Fig. 8 the laser junction region 2a, 3a is surrounded on two sides by an L-shaped depletion layer 9<SP>1</SP>, 9<SP>11</SP>. The depletion layer 91 lies between faces 4, 5 forming the laser cavity and is much narrower than the length of the laser region 2a and is used to modulate the laser output. The other region 9<SP>11</SP> of the depletion layer is equal to or larger than the lateral width of the laser region 2a and since the absorption loss in region 911 is greater than the gain provided by the laser region 2a oscillations between faces 6, 7 are suppressed. This construction eliminates the problem of roughening surfaces 6, 7. In the arrangement of Fig. 9 the light modulating junction 3b is in the shape of a U and surrounds the laser region 2a. Oscillations between surfaces 6, 7 are suppressed and those between surfaces 4, 5 are modulated by the reverse bias across junction 3b<SP>1</SP>.