baber/WOPTO huggingface dataset:
Patent GB-799869-A (GB)
Title: Improvements in or relating to the manufacture of linoleum
Inventor: EVANS CLIFFORD
IPC: D06N1/00
Filed: 1956-06-15
Abstract: The time required for maturing a linoleum composition is reduced by incorporating therein a hydrazide of a carboxylic acid. The preferred hydrazide is a dihydrazide of an aromatic or a saturated aliphatic dicarboxylic acid, e.g., succinic, malonic, adipic, sabacic, terephthalic, or isophthalic dihydrazide, but there are also specified acetic, stearic, benzoic, 2-hydroxybenzoic, p-aminobenzoic, p-carboxybenzoic, and isonicotinic hydrazides.  Up to 5 parts by weight of hydrazide may be mixed with 100 parts of a linoleum cement prepared in a known manner, cork and/or wood flour, and other fillers and ingredients at a temperature of about 100 DEG C.  The composition may then be granulated, calendered, applied to a backing material, and matured at 55 to 90 DEG C.  Several Examples are described in which the linoleum cement is prepared by oxidizing linseed oil containing driers with air at elevated temperature, and then melting the oxidized linseed oil with rosin in the proportion of 85 : 15 by weight.
Patent GB-222985-A (GB)
Title: Improvements in and connected with two wheel trailers for use with tractors
IPC: B62D53/06
Filed: 1923-07-19
Abstract: 222,985. Eagle Engineering Co., Ltd., and Cox, C. H. July 19, 1923. Brakes, arrangement and disposition of.-In a two-wheeled trailer wagon provided with a tipping body, a lever 22 is connected through cables 25 and levers 26 to brakes 27 and is mounted on the draw-frame 3 of the wagon independently of the body to render the action of the brakes independent of the tipping of the body.
Patent GB-598357-A (GB)
Title: Improvements in and relating to laminated electrical insulation materials
IPC: H01B3/06
Filed: 1944-09-29
Abstract: 598,357. Compound sheet materials. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 29, 1944, No. 18688. Convention date, Sept. 29, 1943. Drawings to Specification [Class 140] Compound sheet material for electric insulation is made by subjecting to heat and pressure an assembly comprising a core of asbestos fibrous material impregnated with a thermosetting synthetic resin faced on one or both sides with one or more sheets of asbestos paper treated with an aqueous solution of ammonium orthophosphate or primary aluminium phos. phate, with, if desired, some free orthophosphoric acid. The core may consist of layers of asbestos cloth coated and impregnated with phenol- or urea-aldehyde resin, and united under heat and pressure either before or simultaneously with the application of the surface sheets. The Specification as open to inspection under Sect. 91 describes also a core of heavy interwoven asbestos or asbestos-glass fabric impregnated with phosphate and faced with phosphate-treated asbestos paper, and a laminated material consisting of alternate layers of phosphate-treated asbestos paper and asbestosglass fabric, both forms being moulded under heat and pressure. This subject-matter does not appear in the Specification as accepted.
Patent GB-837543-A (GB)
Title: Improvements in rotary hectographic duplicating machines
Inventor: BROUGHAM LESLIE ERNEST
IPC: B41L11/08
Filed: 1955-06-28
Abstract: 837,543. Operating clutches. BLOCK & ANDERSON Ltd. June 12, 1956 [June 28, 1955], No. 18705/55. Class 80 (2). [Also in Group XVI] A clutch member 28, Fig. 4, is keyed to a driving-shaft 47 which is freely rotatable about driven shaft 5, to which is secured a plate 26 carrying a pivoted pawl 27 urged into engagement with the member 28 by a spring 31. Two pawls 32, 33 are pivoted on a stud 34, the pawl 32 holding the pawl 27 in released position, while the pawl 33 engages in a notch 26a in the plate 26 to hold the shaft 5 in registered position. A manual control member 48, Fig. 2, is actuated to engage the clutch, and acts through a lever 41, rod 42, and lever 43 to rock the shaft 37, whereupon a lever 36 moves a roller 44 to release the pawls 32, 33 and allow the pawl 27 to engage the member 28. An arm 45 of a trip-lever 39 drops over a roller 46 to lock the lever 43 in its right-hand position and prevent release of the clutch after the first revolution of the shaft 5, but during the second revolution a trip-block 38 carried on a chain 12 (see Group XVI) acts on a second arm 40 of the lever 39 to release the roller 46 and disengage the clutch at the end of the second revolution.
Patent GB-1376548-A (GB)
Title: Voltage reduction circuit
IPC: G05F1/577
Filed: 1973-04-18
Abstract: 1376548 Video signal mixer; gain control ROBERT BOSCH FERNSEHANLAGEN GmbH 18 April 1973 [20 April 1972] 18716/73 Headings H4F and H3T A circuit for reducing the sum of a plurality of independently adjustable voltages U 1 -U 3  while preserving their proportionability, (the voltages being arranged to control the amplification of respective video amplifiers (not shown) of a video signal mixer), comprises means for generating a correction current I Korr  when the sum of the voltages (or the magnitude of a signal dependent upon the sum) exceeds a desired threshold, this correction current being divided into a plurality of partial currents I<SP>11</SP> c1 -I<SP>11</SP> c3  whose relative magnitudes are the same as those of the plurality of voltages and which are each arranged to flow through a respective one of the resistances R in the adjustable voltage paths. The partial currents I<SP>11</SP> c1 -I<SP>11</SP> c3  are derived from the correction current supplied to terminal Q by deriving currents I<SP>1</SP> e1 -I<SP>1</SP> e3  from the voltages U 1 -U 3 , whose relative magnitudes are the same as those of the voltages, which are supplied to the emitters of transistors T<SP>1</SP> 1 -T<SP>1</SP> 3 , these emitters being respectively connected to the bases of transistors T<SP>11</SP> 1 -T<SP>11</SP> 3  to the commoned emitters of which the correction current is applied. The correction current may be generated by summing currents whose relative magnitudes are the same as the voltages U 1 -U 3 , the amount by which this summed current exceeds a desired maximum comprising the correction current (Fig. 2, not shown). Alternatively the peak voltage of the mixed (summed) video signals, after they have been amplified by the control voltages U<SP>1</SP> 1 -U<SP>1</SP> 3  respectively, may be compared with a nominal value, the resulting difference comprising the correction current (Fig. 3, not shown).
Patent GB-1283436-A (GB)
Title: Production of detergent alcohols
Inventor: KOEBNER ADOLF
IPC: C07C27/10
Filed: 1970-04-20
Abstract: 1283436 Preparation of sec. alcohols from olefins IMPERIAL CHEMICAL INDUSTRIES Ltd 19 April 1971 [20 April 1970] 18737/70 Heading C2C Mixed sec. alcohols are made from olefin mixtures present in a paraffin stream by reacting the olefins (and paraffin) with a sulphating agent, converting the resulting sec. alkyl acid sulphates to their neutral alkali metal salts, treating the produced mixture with an aryl or alkarylsulphonate hydrotrope, the alkyl substituents, if any, of which contain a total of not more than 8 carbon atoms, whereby the paraffin is separated into an organics phase and the alkyl sulphate into an aqueous phase, hydrolysing the alkyl sulphates without prior removal of the hydrotrope and separating alcohols from the hydrolysis medium.
Patent GB-146866-A (GB)
Title: Improvements in friction clutches
IPC: F16D13/70
Filed: 1920-07-05
Abstract: 146,866. Bugatti, E. Oct. 21, 1918, [Convention date]. Clutches, friction.-In plate clutches for automobiles &c. of the type with one or more plates on one member gripped by two or more plates on the other member, a plate 14 on the driven shaft 2 is adapted to be gripped by friction surfaces on a driving-drum 10 and on a plate 11 sliding on bolts 12 or on keys and bolts on the drum 10 against the action of springs 13. To engage the clutch, a conical operating-sleeve 20 splined to the shaft 2 presses balls 19 between an incline 17 on a cap 16 screwing into the drum cover 15 and an incline 17<1> bearing through a corrugated spring washer 18 on the plate 11. At the end of its travel, the sleeve 20 engages a brake surface 28 on an oil-containing casing 5 which completely encloses the clutch and has a cock (not shown), a plug 8, and a sight-hole 9 for regulating the oil level. To adjust for wear, the cap 16 is screwed into the cover 15 and is locked by a pin 25, which is itself locked by a spring pin 26.
Patent GB-901322-A (GB)
Title: Improvements relating to metal shelving
Inventor: SUDBURY REGINALD GEORGE
IPC: A47B96/02
Filed: 1960-05-27
Abstract: 901,322. Shelving. DEXION Ltd. April 17, 1961 [May 27, 1960], No. 18835/60. Class 52 (1). A metal shelf has downturned flanges 2a, 2b with inturned flanges 3a, 3b along two opposite sides and single flanges 5c, 5d along the other sides cut away at 6a, 6b to facilitate nesting, the inturned flanges 3a, 3b also being cut away at 7a, 7b and corner slots 9 are provided, terminating a short distance below the top panel 1. Holes or slots in the flanges 2a, 2b, 5c, 5d, permit bolting to framework uprights of slotted angle. Specifications 763,045 and 823,786 are referred to.
Patent GB-600918-A (GB)
Title: Improvements in or relating to tab applying mechanism
IPC: B31B1/90
Filed: 1944-10-03
Abstract: 600,918. Guillotine machines. STOKES & SMITH CO. Oct. 3, 1944, No. 18915. Convention date, Feb. 12, 1942. [Class 31(i)] [Also in Groups XV and XVII] Heads 98, 98<1> manually adjustable transversely of a bridge 42 by a threaded rod 99, support rolls R from which strips T are led by guide rolls 123 and adjustable guide members 128 to intermittently rotated feed rolls 17, 18 driven from a shaft 74. Tabs are severed from the strips T by V-shaped cutters 16, 16<1> which are reciprocated from a rock shaft 69 through collars 103 and adjustable links 104. The tabs pass between control plates 107 and a roll 19. The shafts 69, 74 are coupled together by an arm 81 on shaft 69 having a pin-and-slot connection with a ball clutch 78 on shaft 74 which ensures that the cutters clear the strips T before they are fed the next step forward.
Patent GB-274501-A (GB)
Title: Manufacture of condensation products of arylamines
Inventor: HALLER PAUL
IPC: C08G12/08
Filed: 1927-07-16
Abstract: 274,501. Haller, P., and Kappeler, H. July 16, 1926, [Convention date]. Addition to 266,358. Arylamine-formaldehyde condensation products.-The process of the parent Specification, according to which an arylamine or a salt thereof is condensed with formaldehyde (either in an acid medium or first in a neutral or alkaline medium and then in an acid medium) and the product is subsequently treated with an alkali or an alkaline salt, is modified in that the primary condensation product from one molecular proportion of arylamine or arylamine salt, and more than one molecular proportion of formaldehyde is treated with an organic base, a neutral or an acid salt, or an organic acid. Examples describe the treatment of an initial condensation product obtained from formaldehyde and aniline by the method of the parent Specification with (1) methylamine or pyridine or an aqueous solution thereof, (2) an aqueous solution of sodium bisulphite, ammonium chloride, or lead acetate, and (3) acetic acid or tannic acid. The Specification, as open to inspection under Sect. 91 (3) (a) refers, in example 2, to the use of sodium sulphite and ammonium sulphide. This subject-matter does not appear in the Specification as accepted.
Patent GB-1153829-A (GB)
Title: Process for the preparation of 17&alpha:Acyloxy-21-Hydroxy Compounds of the Pregnane Series
IPC: C07J75/00
Filed: 1967-04-25
Abstract: 1,153,829. Preparation of 17α-acyloxy-21-hydroxy steroids. KONINKLIJKE NEDERLANDSCHE GIST - EN SPIRITUSFABRIEK N.V. 25 April, 1967 [25 April, 1966], No. 18936/67. Heading C2U. 17α - Acyloxy - 21 - hydroxy - steroids of the pregnane series are prepared by the action of enzymes from Flavobacterium dehydrogenans on 17α,21-diacyloxy-steroids in an aqueous medium of pH not greater than 6À5. In this process a #<SP>5</SP> - 3# - acyloxy grouping is converted to a #<SP>4</SP>-3-keto grouping.
Patent GB-609603-A (GB)
Title: Improvements in or relating to means for cleaning and humidifying the air supplied to internal combustion engines
IPC: F02M25/022
Filed: 1947-07-16
Abstract: 609,603. Filtering gases. GAZDA, A. July 16, 1947, Nos. 18966 and 18967. Convention dates, Nov. 16, 1943, and July 5, 1944. [Class 8 (ii)] [Also in Groups XII and XXVII] In a device for filtering and moistening the air supplied to a carburetter, the air is drawn through a filter X and passes down a porous, venturi-shaped member 10 forming the inner wall of a reservoir 12. The filter, which may consist of material such as copper filings, glass wool or the like, is supported in a perforated casing held on to the reservoir by clips 22. The reservoir, made wholly or partly of a porous material, has a float 16 indicating the level of liquid. In a modification, the reservoir has an outer case of metal or-plastic material and the porous material is restricted to the inner wall forming the member 10. The filter is placed in an annular space between two cylinders of foraminous material arranged at the top of member 10.
Patent GB-633892-A (GB)
Title: Improvements in or relating to the preparation of derivatives of cyclohexene
IPC: C07C403/00
Filed: 1947-07-16
Abstract: Compounds of general formula R.C­C.C.R1= CH.CH = CH.CHOH.CH3, wherein R is a cyclohex-1-enyl group which is substituted by either one, two or three methyl groups in the 2-and/or 6-positions, and R1 is hydrogen or methyl are obtained by treating carbinols R.C­C.C (OH)R1.CH = CH.CH = CH.CH3 in the presence of water with not more than 25 per cent, preferably 2.5-25 per cent, weight/volume of an acidic substance or substances defined as mineral or organic acids and acid salts, preferably boric, nitric, hydrochloric, sulphuric, formic, acetic and tartaric acids and potassium hydrogen sulphate. The reaction may take place on shaking at ambient temperatures for, e.g. 3 to 100 hours, or at elevated temperatures, e.g. 100 DEG  C., although at higher temperatures the esters corresponding to the acid employed, particularly with hydrochloric acid, may be obtained, as also when the acid, e.g. sulphuric acid, is present in high concentrations.  The reaction is preferably performed in an inert gas, e.g. nitrogen, atmosphere and with an anti-oxidant, e.g. hydroquinone.  The compounds are useful as intermediates in the preparation of compounds having vitamin A activity in which the acetylenic linkage may be hydrogenated to an olefinic bond using a palladium catalyst supported on charcoal or calcium carbonate.  The starting material may be obtained by the consecutive reaction of a Grignard reagent and an aldehyde or ketone on a 1-ethinyl cyclohexene, which may be obtained as in Specification 627,453.  In examples: (1) 2-methyl, (2) 6 : 6-dimethyl-, and (3) 2 : 6 : 6-trimethyl-1-ethynylcyclohexene is treated with ethyl-magnesium bromide and crotonylidene acetone to give 8-(2-methylcyclohex-1-enyl)-, 8-(6 : 6-dimethylcyclohex-1-enyl)- and 8-(2 : 6 : 6-trimethylcyclohex - 1 - enyl) - 6 - methyl - octa - 2 : 4 - dien-7-yne-6-ol respectively, the latter compounds being isomerized with (1) 2.5 per cent, (2) 1.0 per cent, and (3) 0.5 per cent w/v. sulphuric acid in the presence of nitrogen and a trace of hydroquinone to yield the correspondingly substituted 6-methylocta-3 : 5-dien-7-yne-2-ol.  In the Provisional Specification an example is given in which 1-ethynyl-cyclohexanol is dehydrated to 1-ethynyl-cyclohexene, which on treatment with ethylmagnesiumbromide and hepto2 : 4-dien-6-one yields 8-(cyclohex-1-enyl)-6-methylocta-2 : 4-dien-7-yme-6-ol isomerizable to 8-(cyclohex-1-enyl)-6-methylocta-3 : 5-dien-7-yne-2-ol with 0.5 per cent w/v. sulphuric acid under nitrogen in the presence of a trace of hydroquinone.
Patent GB-1277475-A (GB)
Title: Improvements in or relating to circuits for detecting current flow differences in conductors
Inventor: BARRETT JOHN ALBERT
IPC: H04M3/02
Filed: 1969-04-15
Abstract: 1277475 Transistor switch; automatic exchange systems PLESSEY TELECOMMUNICATIONS RESEARCH Ltd 17 March 1970 [15 April 1969] 19189/69 Headings H3T and H4K A differential amplifier such as a longtailed pair of transistors VT1, VT2, gives an output when the currents in equal resistors R10, R11 differ sufficiently, the two inputs to the amplifier being derived from the first and the second ends respectively of R10, R11, such as by dividers R1, R2 and R4, R5. In a telephone application, (Fig. 1, not shown) an exchange battery is connected through an "A" relay (12) and a polarity reversal relay (14) to a hybrid transformer (10) to which a subscriber has access on line (3, 4), and the operator on another line (1, 2) through an "O C" relay (16) constituted by the above differential amplifier. An earth on any section of a line connected between the subscriber terminals (3, 4) which are connected to inputs 5, 6 on the battery side of the differential amplifier does not affect the amplifier output as the current in R11 still equals that in R10. But if an earth is applied to a point on a line connected between the operator's terminals 1, 2 then the currents in R10, R11 become unbalanced and a voltage change can be detected at one or other collector, as the normally on VT1 and normally off VT2 change condition. In a PCM system this arrangement replaces the OC relay which permits an operator to gain access to aline for the purposes of break-in or "howler" calling.
Patent GB-257584-A (GB)
Title: Improvements in and relating to sole-laying presses for boots and shoes
IPC: A43D25/10
Filed: 1926-08-04
Abstract: 257,584. Kallies, T. Aug. 28, 1925, [Convention date]. Sole-laying.-Relates to pressure cushions for sole-laying presses, of the kind formed by an arch-shaped rubber cover a stretched across a frame b, and consists in the provision of members g shaped to the form of the last and disposed against the inner longitudinal side surfaces of the rubber cover, so that, in use, heavy pressure is exerted on the edges of the sole. The rear edge of the cushion is not supported, but is reinforced by a rubber strip f.
Patent GB-655389-A (GB)
Title: Improvements in or relating to electric switches of the push-push type
IPC: H01H13/60
Filed: 1947-07-18
Abstract: 655,389. Snap-action switches. IGRANIC ELECTRIC CO., Ltd. July 18, 1947, No. 19296. Convention date, June 30, 1941. [Class 38(v)] A switch is actuated by a push button 41 which is connected to a tubular member 37 slidable in a bushing 29. Member 37 is normally retained in its highest position by a spring 60. The lower end of the member 37 carries a washer 54 which supports a spring-pressed pin 49 which engages the upper cam-shaped surface 72 of a pivoted member 21 when the button 41 is depressed, the pin sliding down the surface into engagement with a projection 74. The member 21 is thus rocked and carries with it the actuating member 19. The button 41 slides over an extension 33 of the bushing 29 which limits the downward movement of the button. Riding on the pivot pin 64 on opposite sides of the member 21 are two plates 61 of the shape shown in Fig. 3. These plates are pressed downwards by the spring 60 and serve as guides for the pin 49. The lower end 18 of member 19 engages a member 15 secured to a spring 14 which surrounds a part of the contactor
Patent GB-1415929-A (GB)
Title: Youd d lead phthalates and their use as stabilizers for synthetic resins
IPC: C08K5/098
Filed: 1973-04-24
Abstract: 1415929 Lead phthalates and their use as stabilizers for synthetic resins ASSOCIATED LEAD MFRS Ltd D G PEARSON and D YOUD 28 March 1974 [24 April 1973] 19299/73 Heading C2C [Also in Division C3] The invention comprises dibasic lead phthalate of novel crystalline form which, as a stabilizer, imparts increased volume resistivity to polyvinyl chloride and has an infra red absorption spectrum characterized by absence of a sharp absorption peak in the region of 3540 cm.<SP>-1</SP> and a broad absorption in the region of 430 cm.<SP>-1</SP>, the presence of a sharp single absorption peak in the region of 753 cm.<SP>-1</SP> and the presence of sharp absorption peaks in the regions of 3400 cm.<SP>-1</SP>, 797 cm.<SP>-1</SP> and 320 cm.<SP>-1</SP>, and an X-ray diffraction pattern characterized by peaks at d(Š) values of 16À1, 8-0, 3À49 and 3À34. The lead phthalate according to the invention may be prepared by reacting litharge and phthalic anhydride in a kneader in the presence of triethanolamine and a restricted amount of water. The novel phthalate is used to stabilize a P.V.C. compound of the following composition in parts by weight P.V.C. Corvic D 65/8 (Registered Trade Mark) 100 Dioctyl phthalate 50 Novel dibasic lead phthalate 5 Stearic acid 0À5 The novel phthalate increased the electrical sensitivity of the composition.
Patent GB-1179691-A (GB)
Title: Improvements in Apparatus for Missile Guidance Control
Inventor: DENT JOHN
IPC: F41G7/30
Filed: 1959-06-05
Abstract: 1,179,691. Pulse radar. SHORT BROS. & HARLAND Ltd. 1 June, 1960 [5 June, 1959], No. 19398/59. Heading H4D. In a missile command guidance system, the radar receiver includes separate missile and target tracking and gating circuits, which separate the missile and target pulses, and which direct both sets of pulses through a common processing circuit to provide a display of both target and missile. The common circuit is connected to the tracking circuits through a time-sharing switch. The conical scan aerial 43, Fig. 3, tracks automatically and the target and missile signals proceed along the separate channels 46, 51 and 47, 57, respectively. The time-sharing switch 52 routes the signals, separately, to the indicating tube 92. Each of the channels has a pulse stretch detector and automatic gain control. In the static split feed system, Fig. 4, the target and missile elevation signals pass through pulse stretch circuits 107 and 113 respectively to equalize the pulse lengths of the target and missile signals and the bearing signals pass through a similar set of pulse stretch circuits. The outputs of target elevation pulse stretch unit 107 and its corresponding target bearing pulse stretch unit 113 are applied as control signals to the aerial control to effect target tracking. Direct optical viewing of the target and missile is effected by a telescope mechanically coupled to the antenna and the optical and radar images may be superimposed by a semi-silvered mirror. The operator is provided with a joystick to control the missile to home it to the target over a radio command link.
Patent GB-802623-A (GB)
Title: Road construction
IPC: E01C11/16
Filed: 1957-06-20
Abstract: 802,623. Road construction. BAHR, M. June 20, 1957, No. 19489/57. Drawings to Specification. Class 107 A road having a bituminous surface over a concrete or other foundation is reinforced against cracks by the incorporation of synthetic filamentary materials in the bituminout mix, either by mixing them in the surfacing material or by laying them on a first layer of the mix and then superposing a second layer of the mix. The fibres can be loose or worked up into e.g. fabric, net or fleece. Various polymers are specified as examples of the fibres.
Patent GB-1534713-A (GB)
Title: Well instrument containers
IPC: E21B47/01
Filed: 1976-03-17
Abstract: 1534713 Well instrument containers EXPLORATION & PRODUCTION SERVICES (NORTH SEA) Ltd 17 March 1976 [8 May 1975] 19509/75 Heading E1F A container for accommodating instruments required to be run into a well tubing string, e.g. pressure, depth and temperatures gauges, is fitted with a removable landing member adapted to engage a constriction of given diameter in the string. In the form shown, the container includes a perforate cylindrical housing 10, an upper plug 11 with threaded holes 12 for attaching the instruments to that plug, and a lower plug 14 carrying an interchangeable landing ring 16.