baber/WOPTO huggingface dataset:
Patent GB-1060799-A (GB)
Title: Elastomeric fibre-forming copolyamides
Inventor: COWELL CLIFTON DOUGLAS
IPC: C08G69/36
Filed: 1964-11-21
Abstract: N - Monoisobutyl hexamethylene diammonium sebacate is prepared from N-monoisobutyl hexamethylene diamine and sebacic acid. N,N1 - Diisobutyl hexamethylene diamine is prepared adding isobutyraldehyde to hexamethylene diamine in water, and reducing the Schiff's base so formed.ALSO:Elastomeric fibre-forming copolyamides are produced by heating a lactam with an N-substituted or N,N1-disubstituted aliphatic diamine and an aliphatic a , o -di-carbonylic acid containing at least 5 carbon atoms in the chain or a salt of such a diamine and acid, in the presence of a polymerization catalyst, the ratio of reactants being such that 10-34% of the nitrogen atoms in the products are substituted. Lactams specified are S -caprolactam, o -enantholactam and o -capryllactam.  The diamine may be of formula RNHXNHR1, where R is a hydrocarbon or substituted hydrocarbon radical, e.g. an alkyl, or aralkyl radical, R1 is a hydrogen atom or one of the radicals specified for R and X may be an alkylene radical of at least 6 carbon atoms.  Diamines specified are N-hexadecyl and N N1-diheptyltrimethylene diamine, N - ethyl-, N - isobutyl - N - lauryl, N,N1 - diethyl- and N,N1 - diisobutyl - hexamethylene diamine, N-isobutyl-, N-ethyl-, N - cyclohexyl-, N,N1 - dicyclohexyl-, N,N1-diisobutyl-, and N,N1 - diethyldecamethylene diamine, N,N1 - dipropyldodecamethylene diamine and N,N1 - diethyloctadecamethylene diamine.  Acids specified include sebacic, adipic and dodecanedioic.  Catalysts specified are acid or neutral catalysts including o -aminoundecanoic acid, metaphosphoric acid, orthophosphoric acid, water and aminocaproic acid. 0.01-2% catalyst may be used.  Other additives present may be pigments, plasticizers, delustrants, stabilizers and chain branching agents of which examples are given.  The reactants may be contacted in any order, e.g. the lactam may be added to an equimolar mixture of the acid and diamine or to a salt of the acid and diamine during polymerization.  The reaction may take place at 250-300 DEG  C. under an inert atmosphere. e.g. N2, and optionally latterly under reduced pressure.  The products are used to make fabrics for pyjamas, swimwear and foundation garments. In examples, the polymerization is carried out under autogenous pressure in a sealed vessel or under a superatmospheric pressure of nitrogen.  In Example (8) the final product is immersed in boiling water to remove any unreacted lactam.
Patent GB-1521488-A (GB)
Title: Two component diazo compositions and diazotype materials prepared from same
IPC: G03C1/58
Filed: 1975-11-18
Abstract: 1521488 Diazotype compositions SCOTT PAPER CO 18 Nov 1975 [26 Nov 1974] 47522/75 Heading G2C [Also in Division C2] In a light-sensitive two component diazotype composition comprising at least one light-sensitive dialyonium compound and an acidic stabilizer, the azo coupling component is of the general formula wherein R is an alkyl group containing from 1 to 6 carbon atoms and R<SP>1</SP> is an aralkyl group wherein the aryl portion of the group is either unsubstituted or is substituted with a halogen atom, an alkoxy group containing from 1 to 6 carbon atoms or an alkyl group containing from 1 to 6 carbon atoms. Examples of such compounds are 2-methyl- 4-benzyl resorcinol, 2-methyl-4-(4<SP>1</SP>-methyl) benzyl resorcinol, 2-methyl-4-(4<SP>1</SP>-chloro) benzyl resorcinol and 2-methyl-4-(4<SP>1</SP>-methoxy) benzyl resorcinol. The azo coupling compound may be used in a lightsensitive diazo composition which includes at least one other azo coupling component and more than one diazonium compound to give a so-called black-line diazotype composition. The diazotype material may be bonded to a polyester film by means of a cellulose acetate propionate layer. Tributyl citrate may be used in the diazotype material as a development-accelerator. In a comparative example 2,2<SP>1</SP>,4,4<SP>1</SP>- tetrahydroxy-3,3<SP>1</SP>-dimethyldiphenyl sulphide; 2,2<SP>1</SP>,4,4<SP>1</SP>-tetrahydroxy-3,3<SP>1</SP>-dimethyldiphenyl sulfoxide or 1-hydroxy-2-naphthoic acid piperidide was used instead of an azo coupling component of Formula I above. These compositions yielded prints which were initially plum coloured but eventually colour-shifted to a neutral black upon standing.
Patent GB-1094712-A (GB)
Title: Aircraft landing mat
Inventor: CLAYTON WILLIAM ALBERT
IPC: E01C9/08
Filed: 1964-11-23
Abstract: 1,094,712. Temporary roadways; structural members and joints. HARVEY ALUMINUM (Inc.) Nov.23, 1964, No. 47641/64. Headings, E1G and E1K. An elongated hollow metallic .extrusion has flat. and imperforate top and bottom plates spaced by imperforate perpendicular webs, the top plate being thickened at the web junctions and at the mid-points between such junctions. A temporary runway, for aircraft, comprises a plurality of extruded light metal planks P each having at one side a channel section 41 and at the other side a depending tongue 46 engageable with the channel when the planks are inclined, the ends of the planks are formed with respective engageable upward and downward facing double channels 50, adjacent planks being locked together by a key K. The edges of the planks may engage a strip B provided with ground anchors or with a central channel for a take-off catapult. Reference has been directed by the Comptroller to Specification 1,004,439.
Patent GB-1163991-A (GB)
Title: Immiscible Liquid Separator
IPC: B01D17/04
Filed: 1966-10-24
Abstract: 1,163,991. Separating liquids by coalescing and settling. MIDLAND-ROSS CORP. 24 Oct., 1966 [29 Oct., 1965], No. 47699/66. Heading B1D. Immiscible liquids are separated by coalescing and settling, in which the coalescing elements 34 are horizontally disposed and the flow rate therethrough is limited to 0.08 to 0.1 inches per second. The lighter dispersed phase collects in domes shown on both the upstream and downstream side of elements 34. The housing is in sections so that additional sections 38, with additional elements 34a may be added between the inlet and outlet sections 36, 39, and downstream of the elements 34, 34a and clamped between the housing sections are screens 65, 65a of stainless steel wire, textiles or plastics with 40 to 80 meshes per inch. Elements 34 may comprise two batts of glass or stainless steel fibre, each one inch thick and of different densities, supported on foraminous screens (51), or a wound cord of stranded stainless steel or textile (Fig. 6, not shown) also on a screen (51). In Fig. 2, assemblies of three hollow elements 34 are clamped on a common plate (50) which is clamped between housing ports. In Fig. 3 (not shown) single elements are used, and in Fig. 1 (not shown) the coalescing element is a horizontal flat wall of fibres or particles. Fig. 1 illustrates a heat exchanger which cools or heats the mixture to facilitate subsequent separation. The flow rate in the housing may be 0.75 to 1.1 inches .per second downstream and not more than 2 inches per second upstream of coalescing elements.
Patent GB-1501637-A (GB)
Title: Axis definition apparatus
IPC: G01C9/20
Filed: 1974-11-05
Abstract: 1501637 Producing optical reference lines INDUSTRY SECRETARY OF STATE FOR 24 Oct 1975 [5 Nov 1974 19 May 1975]  47777/74 and 21314/75 Heading G1F An apparatus for producing a reference direction comprises a point source of light 10, an optical image forming device 14, an optical axis 19 defined by the line through the point source 10 and the optical centre 18 of the image forming device, a control member 12 freely suspended from a rotatably mounted portion 5, to pivot about a pivot point, and means for adjusting the position of the optical axis relative to the control member to render the optical axis vertical. The output of a laser 1 is focused by a lens 9 to form the point source 10 to coincide with the centre of a universal joint about which the control member in the form of a tube 12 pivots; adjustment of the focusing is by screw 3. The image forming device 18 may be a grating Fig. 2 (not shown) lens, mirror or zone plate and is mounted in the tube 12 by adjustment screws 15, 15A. In use, to render the optical axis vertical, the tube 12 together with the laser 1 are rotated in their housing 8 through bearings 7; the axis 19 and image system from the device 14 sweep out a cone surface if the optical centre 18 is not vertically below the point source 10 and the screws 15, 15A are adjusted until the image formed by the device on a card or screen (not shown) stays in one place during the rotation. The tube 12 may be damped by a dashpot. In another embodiment Fig. 3 (not shown) the laser output is directed vertically upwards and the point source is formed at a pinhole (25) in the control tube (12). In Fig. 4 (not shown) the laser output enters through the side of the control tube where it is reflected at the pivot point by a plane mirror (44) along the tube to a concave mirror (42) serving as the image forming device. Figs. 5-7 (not shown) illustrate mirrors, prisms which can be fitted to the control tube to produce a light beam in a horizontal or other chosen direction inclined to the vertical.
Patent GB-1372572-A (GB)
Title: Electro-acoustic transmitters for operation in air or underwater
IPC: H04R3/04
Filed: 1971-10-15
Abstract: 1372572 Electro-acoustic transducer circuits; resonant circuits ELECTROACUSTIC GmbH 15 Oct 1971, [17 Oct 1970] 48176/71 Headings H4J and H3U In an air or underwater electro-acoustic transducer arrangement energized by an oscillator 8 (Fig. 1) and in which the reactive component 5 of the transducer 1 is compensated by means of a conjugate reactance 7 in parallel with the transducer 1, a series-resonant circuit 9, 10 tuned to the fundamental frequency of the oscillator 8, which is also the fundamental frequency of the transducer, is connected between the oscillator 8 and transducer 1. As depicted in Fig. 1 the transducer 1 is of electromagnetic type and the reactance 5 is an inductance and is compensated by a conjugate reactance consisting of a capacitor 7. Alternatively (Fig. 2, not shown) the transducer 1 is piezo-electric or electrostrictive and has a capacitative reactance (12) compensated by a conjugate reactance consisting of an inductor (11). The arrangement prevents the short-circuiting effect which the capacitor 7 (Fig. 1) [or (12) Fig. 2 (not shown)] represents for harmonies of the oscillator 8. Such short-circuiting would reduce the efficiency of the arrangement. In the case of a transistorized oscillator such short circuiting could easily damage the transistors. References 2, 3, 4 represent the equivalent circuit of a diaphragm or other member producing mechanical oscillations. Preferably the inductance 9 is of greater value than the inductance 5 in order to protect the oscillator 8 from switching current surges during keying. The capacitor 10 must then have a smaller value than the capacitor 7. Similar criteria apply for the inductance 9 and capacitor 10 of Fig. 2.
Patent GB-1411274-A (GB)
Title: Foldable crane
IPC: B66C23/68
Filed: 1972-10-19
Abstract: 1411274 Luffing arm apparatus UNIC KK 19 Oct 1972 [20 Oct 1971] 48238/72 Heading B8H A foldable crane which comprises booms 7, 10, 11 is mounted on the chassis 2 of a truck 1 and also comprises a cradle 4 having an opening (15) extending therethrough for receiving the second and third booms 10, 11, Fig. 3 (not shown), when the crane is in its folded condition (full line position in Fig. 2). The first boom 7 which is U-shaped in cross-section is pivotally mounted at 8 to the top of a swivel post 5 which is mounted on the cradle 4, the boom 7 being rotatable by means of an hydraulic ram 9 to its raised position, the second boom 10 being rotatable relative to the boom 7 about a pin 12 by means of an hydraulic ram 13 while the third boom 11 which carries a hook 16 at its outer end is slidably received in the boom 10 and extendable relative thereto by means of an hydraulic ram 14. The swivel post 5 is rotatable about the vertical axis by means of an hydraulic ram 6. The opening (15) in the cradle 4 is defined by opposed side walls and a top wall connecting the upper ends of said side walls, Fig. 3 (not shown).
Patent GB-1026828-A (GB)
Title: Piston ring
IPC: F16J9/20
Filed: 1964-12-01
Abstract: 1,026,828. Producing piston rings. MUSKEGON PISTON RING CO. Dec. 1, 1964 [Jan. 25, 1961; March 19, 1962; May 14, 1962; Jan. 13, 1964], No. 48779/64. Heading B3A. [Also in Division F2] A piston ring is made from a blank, Fig. 1, which, after perforating and scoring at 12, is roll-formed to the strip form shown in Fig. 2, heated and then quenched to make it brittle. The score marks 12 are then cracked to separate the edges of each flange. After heat treating, the strip is stretched and cut-off to the required length to make the ring.
Patent GB-1421395-A (GB)
Title: Coated steel member
IPC: E04C5/01
Filed: 1973-10-19
Abstract: 1421395 Extruding lubricant onto steel members JAPANESE NATIONAL RAILWAYS and OILES KOGYO KK 19 Oct 1973 [19 Oct 1972] 48955/73 Heading B2E [Also in Divisions B5, C5 and El] A layer of lubricant e.g. oil is formed either between a steel member and a plastics coating or between a plastics coated steel member and an outer plastics coating as a result of extruding a lubricant-containing plastics material onto a steel or plastics-coated steel member fed through a cross-head extruder. Double coated steel members may have an inner coating of lubricant-containing plastics material and an outer coating of lubricant-free plastics material or vice versa. The steel member is suitable for embedding in prestressed concrete and may comprise wire or rod. The lubricant may be miscible or immiscible with the host plastics material, may be present in an amount of from 3-15% by weight and may comprise a mineral, vegetable, animal or synthetic oil. The layer of lubricant may be up to 10Á thick. The plastics coatings may be polyacetal, polyamide, P.V.C., polyvinylidene chloride, polyvinylacetate, polyacrylonitrile, H.D. polythene, polypropylene, polybutene or co-polymers thereof.
Patent GB-1493573-A (GB)
Title: Vehicles having a raisable deck
IPC: B60P1/02
Filed: 1974-10-21
Abstract: 1493573 Car transporters ANTHONY CARRIMORE (SALES) Ltd 21 Oct 1974 [20 Oct 1973] 48970/73 Addition to 1389236 Heading B7B An upper deck 20 is raised and lowered by a single ram 13 acting through cables 25, 26. The cables pass over pulleys 9, 12 at the tops of pillars 18, 19 and are connected to runner blocks (27), Figs. 2-5 (not shown), which support the upper deck and which slide in the pillars 18 and 19. The top of each pillar is provided with a catch mechanism, Figs. 2-5 (not shown), which retains the deck 20 in its upper position and which is released by slightly raising the deck.
Patent GB-1453286-A (GB)
Title: Locking fastenrer
IPC: F16B39/04
Filed: 1973-10-22
Abstract: 1453286 Locking threaded fasteners V E TIKHONOV N I ANDRIANOV and P S SMIRNOV 22 Oct 1973 [20 Oct 1972] 49126/73 Heading F2H A bolt-and-nut fastener 4, 5 for securing a removable panel 9 of an aircraft automatically locks when a screwdriver used to tighten it is removed from the driving socket 16 of the bolt. The bolt 4 is hollow and has a short four-start thread 17. A locking member comprises a rod 21 axially slidable in the bolt and carrying a transverse bar 22 the ends of which project through longitudinal slots 19 in the bolt and are shaped as thread portions having the same pitch as the thread 17 but a greater depth. A stop 25 is secured in the bolt tip by a swaged-on collar 28. A spring 24 urges the locking member towards the bolt head. The bolt 4 is captive in a sleeve 1 secured in the panel 9 and having a thread 29 matching the thread portions on the bar 22. The nut 5 is secured in a skin panel 10 by a sleeve 11 threaded on its outer surface, and has thread portions 36, 37 separated by a shoulder 39. Portion 36 has a thread depth corresponding to the thread on the ends of bar 22, while portion 37 has a thread depth equal to the difference between the depths of the portion 36 and the bolt thread 17. The portion 37 has four longitudinal slots 38 each capable of receiving an end of the bar 22. When a screwdriver bit is inserted into the socket 16, it forces the locking member into the bolt to a position in which the thread portions on the bar 22 are continuous with the main thread 17 so that the bolt can be screwed into the nut 5. When the thread 17 has passed through the nut thread portion 36, further axial movement of the bolt is prevented, and the fastener is in a tightened condition with an end face 18 of its thread 17 bearing on the nut shoulder 39 and the projecting ends of the bar 22 engaging in slots 38 of the nut. Removal of the screwdriver allows the spring 24 to move the locking member axially so that the thread on the bar 22 is out of alignment with the bolt thread 17, preventing loosening or unscrewing of the bolt.
Patent GB-1368760-A (GB)
Title: Windscreen wiper assembly for motor vehicles
IPC: B60S1/40
Filed: 1971-10-22
Abstract: 1368760 Windscreen wipers ROBERT BOSCH GmbH 22 Oct 1971 [26 Oct 1970] 49167/71 Heading A4F A windscreen wiper arm and blade assembly comprises a holder 14 pivotally attached to a wiper blade yoke 12 Fig.1 (not shown) and having a longitudinal channel 16 receiving an end of the wiper arm 15, and a retaining spring 23 in the channel 16 having two abutments 29, 30 engaging two longitudinally spaced opposed abutment faces on the arm 15, whereby the spring 23 is longitudinally retained with the wiper arm 15, and a third abutment 28 engageable with an abutment 25 on the holder 14 to retain the spring 23 in the channel 16, the abutment 29 limiting the entry of the wiper arm 15 into the channel 16 and being located between the abutments 28, 30. A fourth abutment 31 engages lugs 26 on the holder 14 to latch the end of the wiper arm 15 in the latter, the end 32 of the spring 23 being movable to release the latch.
Patent GB-1377710-A (GB)
Title: Process for the preparation of 1,3,3-trialkyl-2-methylene-indolines  and derivatives thereof
IPC: C07D209/08
Filed: 1972-10-26
Abstract: 1377710 Preparation of 1,3,3-trialkyl-2- methylene indolines and derivatives thereof FARBWERKE HOECHST AG 26 Oct 1972 [30 Oct 1971] 49399/72 Heading C2C A compound of formula wherein each of R 1 , R 2  and R 3 , which may be the same or different represents a (C 1-4 )alkyl radical, and A represents an aromatic radical is prepared by alkylating with an alkylating agent (e.g. dimethyl sulphate, diethyl sulphate; methyl, ethyl or propyl ester of benzene sulphoric acid or of p-toluenesulphonic acid) a compound of formula wherein each of R 1 , R 2  and A is defined as above, in the presence of a basic reagent.
Patent GB-1509627-A (GB)
Title: Pinch roll unit and strip processing lines incorporating such units
IPC: B21D43/09
Filed: 1976-11-19
Abstract: 1509627 Feeding webs LOEWY ROBERTSON ENG CO Ltd 19 Nov 1976 [4 Dec 1975] 49857/75 Heading B8R [Also in Division B3] A pinch roll unit comprises a pair of rollers 46, 50 at least one of which is adapted to be power driven, means such as a fluid cylinder device 72-76 and lever 56 for displacing one roll, as shown roll 46, towards and away from the other and means, such as a fluid cylinder device 78- 82 and a fluid-cylinder operated wedge (88) (Fig. 3, not shown), for rapidly displacing the rolls 46 and 50 respectively away from each other. Two pairs of such roll units in a strip process line are associated with a strip thickness detector, the upstream roll pair being held open and the downstream pair closed until the detector detects a thickened joint portion when the detector causes the upstream roll pair to close after the joint has passed between them and the downstream pair to open rapidly before the joint reaches them.
Patent GB-1316179-A (GB)
Title: Power-operated acoustic means
IPC: G10K9/04
Filed: 1970-11-26
Abstract: 1316179 Warning horns FALCON SAFETY PRODUCTS Inc 26 Nov 1970 [20 March 1970] 49931/72 Divided out of 1316178 Heading G5J The subject matter of this Specification is identical to that described in Specification 1,316,178, but the claims are concerned with the mounting of the diaphragm at the throat of the trumpet by means of a cap to produce a sealed chamber by resilient engagement of cap and body.
Patent GB-1278009-A (GB)
Title: Microphone
Inventor: CRAGG WILLIAM DONALD
IPC: H04R17/02
Filed: 1970-10-22
Abstract: 1278009 Piezo-electric microphones STANDARD TELEPHONES & CABLES Ltd 22 Oct 1970 50130/70 Heading H4J A pressure gradient microphone includes a piezo-electric disc transducer element, comprising a composite disc of piezo-electric material polarized through its thickness and attached to a second disc having equal acoustic stiffness, mounted within a hollow cylinder with its major surfaces normal to the longitudinal axis of the cylinder. The disc 1, made of a mixture of lead and zirconium titanate is bonded to a disc of aluminium, brass or nickel iron or alternatively to a further piezo-electric disc and is mounted within housing 2 on a flexible membrane or a taut woven gauze 5 which is peripherally secured to the housing. Alternatively a rubber seal may be used to mount the disc in the housing, Fig. 1 (not shown). In a further embodiment, Fig. 3 (not shown) the housing is of greater diameter and is provided with a centrally mounted diaphragm which drives the disc through a centrally disposed driver element. The disc in this case is provided with edge weights to lower its resonant frequency. The ends of the cylinder are covered by gauze 17. The piezo-electric disc has gold, nichrome or silver electrodes applied by evaporation and when two discs are used they may be polarized in the same or opposite directions.
Patent GB-1364995-A (GB)
Title: Static inverter for converting dc power to multiphase ac power
IPC: H02M7/48
Filed: 1972-10-31
Abstract: 1364995 Inverting BENDIX CORP 31 Oct 1972 [7 Dec 1971] 50131/72 Heading H2F An inverting system comprises at least two inverters 1, 3 having a common commutating circuit 123, 125, 135, 137 arranged to turn off thyristors of the two bridges 1, 3, bridge 1 supplying primary windings 23 of a transformer 15 connected bridge 3 supplying primary windings 25 of a transformer 17, the secondary voltages of the transformers 15, 17 being combined, the phase relationship of the bridges 1, 3 being adjustable so as to reduce the output in the event of overload. As described, the thyristors of bridges 1 and 3 and the commutating thyristors are controlled by a logic circuit (Fig. 9, not shown) comprising ring counters driven by a crystal oscillator via frequency dividing circuits. The supply to the bridges 1 and 3 is 280V. D.C. derived by rectifying A.C., whilst the commutating supply is only 25V. D.C. but which is increased to 375V. by inductor 125 resonating with capacitor 123. A detailed description of the sequence of triggering and commutating the bridge thyristors is given. Fig. 1 (not shown) relates to a further pair of bridges feeding further respective transformers, one in star and the other in delta, the secondary windings of all four transformers being connected in series to provide a stepped sine wave output (Fig. 2B, not shown). A further commutating circuit (Fig. 6, not shown) may be connected in series with the D.C. supply to the system, the circuit being turned off in the event of overload and arranged to give a'soft re-start via a resistor. Alternatively similar protection may be provided by deriving the D.C. for the system from a three-phase semi-controlled bridge (Fig. 7, not shown).