baber/WOPTO huggingface dataset:
Patent GB-1326932-A (GB)
Title: Method and apparatus for manufacturing pipe ends provided  with an extreme end having an enlarged thickness of wall
IPC: B29C57/02
Filed: 1970-09-03
Abstract: 1326932 Moulding pipe grooves INDUSTRIELE ONDERNEMING WAVIN NV 3 Sept 1970 [4 Sept 1969] 42269/70 Heading B5A [Also in Division F2] The widened end of a polyvinyl chloride pipe 5 for joining to an unwidened pipe end, for the conveyance of a pressurized medium, is provided with an internal groove and a thickened wall. The pipe end may be widened prior to the formation of the groove, but in the described embodiment the groove and widened end are simultaneously formed when the pipe 5 is plasticized by heating to 100, or 120 to 180‹ C., e.g. 140‹ C., and slid on to a mandrel 3 within the cavity 16 of a split die 1a, 1b, heated to 30 to 70‹ C., e.g. 55‹ C. and provided with vents 15, within which the pipe end is thickened upon displacement thereof against the cavity wall, by axial movement of a member 7 and/or a ring 4 which grips the pipe 5 against the mandrel 3 under the action of an hydraulic pressing ring 6. The mandrel 3, may comprise loose mandrel segments around a mandrel core, and an annular mandrel member 12 which may be rotatably mounted or may comprise inflatable rubber ring, or elements expansible by a conical core.
Patent GB-1043439-A (GB)
Title: Diolefin polymerization
IPC: C08F36/04
Filed: 1964-10-19
Abstract: Polymers of conjugated dienes are made by effecting the polymerization of the diene in the presence of a catalyst system selected from TiCl4, TiB4, and TiI4, and at least one organo-aluminium aromatic thioetherate of the formula Al(R1,R2,R3)S(R4,R5) where R1 is selected from alkyl, cycloalkyl, aryl, aralkyl, halogen, and hydrogen, R2 and R3 are selected from alkyl, aryl, and aralkyl radicals, R4 is an aromatic radical, and R5 is selected from saturated and unsaturated aliphatic, or alicyclic radicals, and aromatic radicals.  The Specification contains lists of organoaluminium compounds and aromatic thioethers.  The catalyst exemplified is aluminium triisobutyl thiodiphenyletherate and TiCl4. The catalyst may be preformed or formed in situ.  The polymerization is preferably effected in a hydrocarbon diluent.  The reaction is terminated by adding a solution of di-tertiary amyl hydroquinone in isopropyl alcohol.  The diene may be butadiene or isoprene.
Patent GB-983963-A (GB)
Title: Improvements in or relating to vibratory conveyors
IPC: B65G27/00
Filed: 1961-11-28
Abstract: 983,963. Oscillating sieves. CARL SCHENCK MASCHINENFABRICK G.m.b.H. Nov. 28, 1961 [Dec. 2, 1960], No. 42513/61. Heading B2H. [Also in Division B8] A vibratory conveyer for feeding and/or screening a hot granular feed comprises two screening plates 1, 2, the gap between being covered by a sealing member 3 (see also Fig. 5, not shown). The plates 1, 2 are attached to a hollow cross-member 6 by bolts 4 and keys 5 which permit movement of the plates due to thermal stresses. The cross-member 6 connects side plates 8, 9 and has open ends to permit the keys 5 to be observed whilst the conveyer operates and to be retightened if required. The interior of the cross-member 6 is cooled by cold air as indicated by arrows 16. Figs. 2a, 4 show how a plate 21 (corresponding to the plate 1 in Fig. 1) is attached to a cross-member 37 (corresponding to cross-member 6) so as to prevent longitudinal movement of the plate relative to the cross-member at the point of attachment. A locating plate 35 is attached by a spacer 36 to the cross-member 37, the plate 21 being locked by a wedge 33 between an abutment 31 and the locating plate 35 against an abutment 32.
Patent GB-1121854-A (GB)
Title: Electricity meters and like instruments of induction type
Inventor: DRANSFIELD DESMOND
IPC: G01R11/02
Filed: 1964-10-20
Abstract: 1,121,854. Electric meters. UNITED GAS INDUSTRIES Ltd. Oct. 20, 1965 [Oct. 20, 19641, No.42648/64. Heading G1Q. The main voltage pole 1 of an induction motor meter, consisting of a rotor disc or the like (not shown) driven by voltage and current electromagnets 1, 5 and 2 respectively, has a pair of spaced seatings in the so-called forward face of the pole close to the polar surface 3 which faces the rotor. In one or both of these seatings (as shown, both) is set an axially movable pin or screw (as shown, a screw). The screws have enlarged beads so that when one of them projects further than the other from the forward pole face a significant degree of magnetic assymetry is imparted to the pole - especially in the limiting case where one of the screws is completely removed. This assymetry provides a bias torque sufficient to compensate for such error-producing effects as bearing friction and magnetic hysteresis. Phase errors may also be compensated for by including in the screw head 9, Fig.4, an insert 10 of non- magnetic material. This insert may either be in the form of a non-magnetic filling in an annular groove in the otherwise magnetic screw head or be a non-magnetic washer fitted under the screw head. In the latter case a second, and magnetic, washer may be fitted in addition. If, as shown, the movable members are screws the seatings for them may simply be screw threaded holes in the pole. It is preferred however to provide seatings in the form of inserted sleeves or bushes and the two sleeves may be linked by a common connecting head piece, e. g. of resilient plastics. The apertures in this head piece may be fitted with internally directed ribs or the like which grip the pins or screws.
Patent GB-973219-A (GB)
Title: Semiconductive negative resistance circuit elements and devices
IPC: H01L29/00
Filed: 1960-12-14
Abstract: 973,219. Semi-conductor devices. WESTERN ELECTRIC CO. Ltd. Dec. 14, 1960 [Dec. 17, 1959], No. 43011/60. Heading H1K. A device operating by the tunnel effect comprises a degenerate region of one conductivity type forming a PN junction with a nearly degenerate region of opposite conductivity type and means for producing " hot " electrons in the nearly degenerate region adjacent the junction to move the imref level in the region into the conduction band if the region is N-type or into the valence band if P-type, so that the junction will exhibit a tunnel diode I-V characteristic. In the Fig. 1 embodiment comprising an N-type monocrystalline silicon wafer 11 with a degenerate P-type zone 12 formed by alloying acceptor material to a narrowed portion 17 thereof " hot " electrons are produced by the high field in the narrowed portion. The value of the negative resistance obtainable with a forward bias between electrodes 13 and 15 varies with the position of the imref level in the narrow portion and can therefore be modulated by varying the voltage applied between ohmic contacts 15, 16. As an alternative the hot electrons are produced in a diode 21 (Fig. 2) comprising degenerate P body 26 and nearly degenerate N zone 25 by placing the body in a unidirectional magnetic field and supplying to it R.F. energy at the cyclotron resonance frequency of the free electrons in the N-type zone, by placing it in a cavity 22 fed by oscillator 30. In this case the negative resistance may be modulated by varying the amount of R.F. energy supplied. A further alternative, Fig. 3, is for the " hot " electrons to be produced by avalanche breakdown across a further reverse biased PN junction 48. In this arrangement the tunnel junction 49 must be within a few mean free electron paths of junction 48. Region 41 which is of comparatively high resistivity is preferably non-uniformly doped so that the avalanche breakdown is restricted to the part of junction 48 facing junction 49. In this embodiment the negative resistance of junction 49 may be modulated by the bias across the other junction.
Patent GB-1410549-A (GB)
Title: Automatic coverslipper apparatus
IPC: G01N33/48
Filed: 1973-09-13
Abstract: 1410549 Microscope slide cover-slipper MILES LABORATORIES Inc 13 Sept 1973 [4 Oct 1972] 43114/73 Heading J Apparatus for adhering face-to-face two flat faced members e.g. microscope slide 22 and coverslip 12, comprises means applying a predetermined amount of liquid, e.g. resin 68, Fig. 6 on one face, and means positioning the members in closely spaced opposed relation so that the liquid contacts only a portion of each flat face, the surface tension and capillary action of the liquid drawing the faces together with the liquid substantially filling the reduced space therebetween. A dispensing rod 10, Fig. 2 has a lower curved forward surface 28 and a flat upper surface 26 on which is pivoted pawl 30 loaded by spring 40. Forward longitudinal movement of the rod allows the pawl to displace the lowest cover-slip 12 out of a stack in magazine 14 on to rails 18, 19, Figs. 1, 2 after a quantity of liquid from nozzle 16 has been deposited on the slip, curved rod surface 28 depressing cross-arm 82 of spring 90 to lower slip elevating means 24. A slide 22 is placed on pivoted arms 96, 97 abutting lips 98,99 thereon and the arms move the slide along rails 92, 93 until the slide is positioned above the slip. On withdrawing rod 10, means 24 lifts an edge of the slip as in Fig. 6 so that the liquid contacts both faces and draws them together. Movement of the rod, pivoting arms and dispensing from the nozzle may be sequentially controlled at 76 manually or by a switch operated by placing a slide on the pivoting arms. If the slide is precoated with resin, the liquid may be a solvent. The apparatus may receive slides at the outlet of a slide staining apparatus and the pivoting arms move further to convey the cover-slipped slides to a further treating, e.g. drying, station.
Patent GB-925098-A (GB)
Title: Improvements in or relating to glass feeders
Inventor: BROADLEY JEFFREY
IPC: C03B7/10
Filed: 1960-12-14
Abstract: 925,098. Glass feeders. BRITISH HARTFORD-FAIRMONT Ltd. Dec. 1, 1961 [Dec. 14, 1960], No. 43122/60. Class 56. A glass feeder of the kind comprising means for discharging molten glass downwardly in a suspended column, shear blades 14 and 15 mounted on the ends of shear arms 5 and 6 for swinging about vertical pivot axes, and a mould charge guide 18 and arm 22 carried by the shear arm 5, has adjustable controls mounted on a stationary part of the feeder connected by mechanical transmissions for adjusting the angular position of the charge guide arm 22 relatively to the shear arm 5 and for adjusting a lever 19, to which the charge guide 18 is secured, in the transverse direction. The shear arms are geared together by intermeshing spur gears 11 and 12 and are opened by mechanism connected to one of the arms and closed by a coilspring or air cylinder acting on a lever 13 integral with the arm 6. By means of a hand wheel acting through a geared universal joint 31, a screw 24 is rotatable in a threaded stationary mounting 25, 26 and abuts against a roller 28 mounted on the guide arm 22. Contact between the roller 28 and the screw 24 is maintained by a spring 30. Rotation of the screw 24 adjusts the charge guide 18 by adjusting the position of the arm 22 about its pivot bolt 23. Horizontal adjustment of the charge guide 18 is effected by a hand wheel acting through a geared universal joint 50 rotating a spindle 35 connected via a universal joint 34 to a screwed rod 32. Rotation of the rod 32 by the spindle 35 causes it to be screwed into or out of a threaded bore 33<1> of a universal joint 33 and rocks the lever 19 about its pivot pin 21. Two modifications of the horizontally adjusting mechanism are described.
Patent GB-1369982-A (GB)
Title: Containers
IPC: B65D88/60
Filed: 1971-12-03
Abstract: 1369982 Discharging containers GLOVER WEBB & LIVERSIDGE Ltd 3 Dec 1971 [9 Sept 1970] 43142/70 Heading B8E A container, e.g. a vehicle load carrying body, includes a discharge barrier 2, horizontally movable to displace and eject material from the container, the barrier 2 being movable along the container by repeated strokes of a double acting ram 4, which through rails 10 and latching arrangements 20, 26, moves the barrier along in steps. The rails 10 are disposed one along each side of the container and are horizontally reciprocable by the ram 4 through a frame 8, each rail having pairs of oppositely inclined slots 20 spaced at intervals corresponding to the ram stroke. A control bar 28 is associated with each rail and is movable relative to its rail to block either all the slots facing in one direction or the other, depending on which way the barrier 2 is to be moved by reciprocation of the ram. The sets of slots 20 that are blocked by the bar 28 is controlled by a relay lever 32 which is selectively pivotable to place either the lug 34a or 34b in restricting co-operation with a recess 38 in the underside of the bar 28, whereby the position of the bar 28 relative to the rail is determined upon movement of the rail. The slots are engaged by pins on levers 26 pivoted to a carrier 24 secured to each side of the barrier and the incline of the slots provides for driving the barrier in one direction of rail movement and releasing the drive in the other direction whereby the barrier is moved stepwise along the container.
Patent GB-1359725-A (GB)
Title: Fluidized beds
IPC: B05C19/02
Filed: 1972-09-15
Abstract: 1359725 Coating apparatus JIDENCO MACHINES Ltd 15 Sept 1972 [17 Sept 1971] 43462/71 Heading B2L In a fluidised bed coating apparatus the fluidised powder into which articles to be coated are dipped is maintained at a relatively low level for coating and at a higher level during replenishment of powder in the bed. In the coating chamber 15 gas is fed in through pipes 19, 20 one of which has a larger flow restricting orifice 22, 23 than the other. These pipes are selectively operable by means of a valve 21. The pipe with the larger orifice maintains the level at 29 and the other one maintains the level at 30. A similar system obtains for the reservoir 16. When the bed 15 is to be replenished both levels are raised (as at 29 and 32) and powder passes over the weir 17 into the bed 15, and when coating takes place the levels are lowered (as at 30 and 31). The apparatus may be vibrated. Two reservoir tanks may be provided. In a modification (not shown) a single bed is provided which is loaded from an inlet pipe and excess powder falls over a weir to an outlet chute. The fluidising gas may be cooled.
Patent GB-1088930-A (GB)
Title: Polymerization catalyst
IPC: C08F136/06
Filed: 1965-10-15
Abstract: Butadiene 1:3 is polymerized to high molecular weight (at least 10,000) polybutadiene having more than 80% of the monomer units with cis 1:4 structure in the presence of a catalyst comprising the reaction product of [(C6H5)3P]2CdCl2, aluminium powder, HgX2, where X=Cl or Br and R3Al, where R=C1- 8 alkyl. The polymerization may be effected in an aromatic solvent, e.g. benzene, at 75-90 DEG  C. Subsequent to polymerization, the product may be coagulated with methanol.ALSO:A polymerisation catalyst comprises the reaction product of [(C6H5)3P]2. CdCl2, Al powder Hg X2 where X = Cl or Br and Al R3 where R = C1 to C8.  Preferred are Hg Cl2 and terisobutyl aluminium. The polymerisation may be effected in an organic solvent.
Patent GB-1450603-A (GB)
Title: Process for the preparation of aliphatic dialdehydes
IPC: C07C67/00
Filed: 1974-10-09
Abstract: 1450603 Aliphatic dialdehydes RHONEPOULENC SA 9 Oct 1974 [10 Oct 1973] 43831/74 Heading C2C Aliphatic dialdehydes are prepared by reducing the corresponding acid chloride with hydrogen and a palladium catalyst, in the presence of a tertiary amide, specifically of formula in which: R<SP>1</SP> and R<SP>2</SP>, which may be identical or different, each represents a straight or branched, saturated aliphatic group having at most 6 carbon atoms, a cycloaliphatic group having 5 or 6 ring carbon atoms, or a phenyl, phenylalkyl or alkylphenyl group, the alkyl substituent of which phenyl group contains at most 4 carbon atoms, or R<SP>1</SP> and R<SP>2</SP> together form a saturated or unsaturated divalent radical having 4 or 5 carbon atoms, and R is as defined under R<SP>1</SP> and R<SP>2</SP> or represents a hydrogen atom or forms together with one of the radicals R<SP>1</SP> and R<SP>2</SP>, a divalent radical having from 3 to 5 carbon atoms. Examples prepare glutaric acid, adipic acid, suberic acid and dodecanedioic acid using dimethylacetamide or N-methylpyrrolidone as amide.
Patent GB-1023824-A (GB)
Title: Improvements in and relating to variable or adjustable pitch fans
Inventor: WALSHAW DENIS JAMES
IPC: F04D29/36
Filed: 1961-12-07
Abstract: 1,023,824. Axial-flow fans. AEREX Ltd. Nov. 15, 1962 [Dec. 7, 1961], No. 43838/61. Heading F1C. [Also in Division G3] An axial-flow fan blade pitch control mechanism comprises a piston 3 having a flange 2 for connection to the hub 16, and a cylinder 7 rotatable with the piston and sliable on the piston. Axial movement of the cylinder varies the pitch of the fan blades through L-shaped leaf springs 14 connected to a knuckle-jointed arm 23 which is connected to a lug 22 on the stub shaft 19, the spring 14 having a backing plate 15 which prevents flexing in one direction. As shown the cylinder 7 is double acting and is loaded by a spring 9. A valve 25 has lands 37, 38 controlling ports 34, 35 leading to opposite ends of the cylinder, fluid pressure being supplied through a bore 39 to the space between the lands. Passages 40, 42 connect the spaces outside the lands to exhaust. The valve is moved by fluid pressure, in response to temperature, manual or some other factor, supplied to an inlet 13 which pressure acts on a diaphragm 26 to position the valve 25 against a spring loading 30. The cylinder moves in response to movements of the valve until the lands 37, 38 again close the ports 34, 35. In a modification, a spring-loaded single-acting cylinder is used.
Patent GB-1191475-A (GB)
Title: Reciprocating Hydraulic Pump or Motor.
IPC: F16C33/30
Filed: 1967-09-26
Abstract: 1,191,475. Reciprocating pumps and motors. SUNDSTRAND CORP. Sept. 26, 1967 [Oct. 10, 1966], No. 43850/67, Heading F1A. The cam plate 43 of an axial piston pump or motor is supported for pivotal movement on a roller bearing assembly 75 which comprises rollers 88 which engage tracks in the housing cover 13 and on the cam plate. The rollers 88 are mounted in cages 89 which carry pinions 96 which engage with segments 98 on the cover and spring loaded segments 100 on the cam so that the rollers 88 may roll during adjustment but are retained in the tracks. The piston rods 36 are secured to a ring 41 engaging the cam 43 which ring is secured to a member 50 engaged by a spring loaded member 67 slidable on an extension of the block 21, the member 50 having slots 60 accomodating the rods 36 which are engageable therewith to transmit rotary motion.
Patent GB-438748-A (GB)
Abstract: 438,748. Colour photography. OPTICOLOR AKT.-GES., Glarus, Switzerland. Sept. 7, 1934, No. 25805. Convention date, Sept. 8, 1933. Addition to 421,084 and 435,859. [Class 98 (ii)] In copying from a lenticular film onto a lenticulated blank as in the parent Specification, the objective aperture is made small both in the direction parallel to the lenticular elements and at right angles thereto. Preferably a screen having a small circular aperture is placed in the objective. In the apparatus shown, the picture 1 on the original film is illuminated by the light source 5 and condenser system 99, 100 and is copied on the blank film 13 by the objective 2. The light path is formed by the system of oscillating mirrors 83, 84 the latter being formed as an angular mirror for producing laterally correct copies. A screen 20 having a small circular aperture is inserted in the objective. Specification 349,267 is referred to.
Patent GB-1205840-A (GB)
Title: Material handling equipment
Inventor: RICCIARDI RONALD JOSEPH
IPC: B65D88/66
Filed: 1968-09-16
Abstract: 1,205,840. Discharging from a hopper. R. J. RICCIARDI. 16 Sept., 1968 [19 Sept., 1967], No. 43913/68. Heading B8S. Bin 10 is carried by frame 26 and is provided at its bottom with hopper 14 which is connected to the bin 10 by rubber strip 18 and is supported from the frame 22 by shaft 38 which carries agitator 50 as shown. When the hopper 14 is reciprocated about shaft 38 by motor 44 via rod 46 the material is agitated and discharged by the hopper 14 from bin 10.
Patent GB-1369876-A (GB)
Title: Elastic fabric
IPC: D03D15/56
Filed: 1971-09-21
Abstract: 1369876 Elastic fabrics JOHNSON & JOHNSON 21 Sept 1971 44012/71 Heading D1K An elastic warp narrow fabric is woven under tension with bands of different pick density so that, when relaxed, some bands contract and others do not, to provide a fabric that is stretchable in parts. Different weaves may be used in the different bands and plain woven cutting bands may be provided. Monofil weft may be inserted to provide stiffened portions utilised as "bones" in foundation garments, trouser bands. &c. The different pick densities are obtained by varying the take-up.
Patent GB-1357390-A (GB)
Title: Cylinder heads for spark-ignition internal combustion engines
Inventor: HENAULT C
IPC: F02B1/04
Filed: 1971-09-21
Abstract: 1357390 I C engine cylinder heads REGIE NATIONALE DES USINES RENAULT and AUTOMOBILES PEUGEOT 21 Sept 1971 [23 Sept 1970] 44046/71 Heading F1B A cylinder head 3 defining a part-spherical combustion chamber 4 has an inlet passage 5 which approaches the chamber substantially parallel to the cylinder abutment face of the head and which is curved towards the abutment face to lead into the chamber obliquely to the abutment face. A spark-plug duct 9 is inclined to the abutment face in a direction opposite to that of the passage 5 and forms an obtuse angle with the axis of the inlet valve 7. In use, fuel particles in the passage 5 are concentrated towards that wall of the passage on the outside of the curve and are then deflected by the valve 7 to be preferentially directed into the duct 9. The spark-plug 10 may have electrodes (10b), Fig. 2 (not shown), located in a pre-combustion chamber (13) forming an extension of a duct (9a) located in a boss (11) projecting into the combustion chamber. The duct 9 may have a diameter between 5À5 and 6 mm. and a length of about 4 mm. The volume of the duct 9 or of the duct and pre-combustion chamber (9a, 13), Fig. 2, (not shown) is preferably between 4 and 6%, with a minimum of 3%, of the total combustion chamber volume.