baber/WOPTO huggingface dataset:
Patent GB-613854-A (GB)
Title: Improvements in and relating to repeater systems for high frequency electric waves
IPC: H04B7/155
Filed: 1946-01-21
Abstract: 613,854. Two-way transmission. GENERAL ELECTRIC CO., Ltd., and GLADWIN, A. S. Jan. 21, 1946, No. 1972. [Class 40 (iv)] [Also in Group XL (c)] The invention relates to radio-repeater stations which handle in separate circuits two signals travelling in the same or in opposite directions, in which each of the received signals is converted to an intermediate frequency for amplification and is then reconverted to a new frequency for retransmission, the transmit and receive frequencies differing by a relatively small amount f1. According to the invention one or more of the beat oscillators associated with the frequency conversion is made common to both circuits. The Figure shows an arrangement in which one of the received signals fc is mixed with a frequency fo from oscillator 2 to produce an intermediate frequency of fo-fc which after passing through amplifier 5 is mixed with a frequency f1 from oscillator 5. The resultant product f1 -fo+fc is mixed with fo to produce the transmit frequency fc+f1. The other signal fc+f2 received at E is converted to a frequency fc+f1+f2 in the second circuit in a similar manner. Oscillators 2 and 5 are common to both circuits. In systems where the two received signals are of the same frequency (i.e. f2=0) a further simplification results from making amplifiers 3 and 6<SP>1</SP> and 31 and 6 identical. The invention may also be applied when the arrangement referred to in Specification 613,902, [Group XL (c)] is used.
Patent GB-671244-A (GB)
Title: Improvements in or relating to devices for facilitating book-keeping
IPC: B41L3/02
Filed: 1950-01-25
Abstract: 671,244. Book-keeping appliances. RUFBUCHALTUNG AKT.-GES. Jan. 25, 1950 [Dec. 20, 1949], No. 1979/50. Classes 16 and 146 (i). A device for facilitating book-keeping of the type comprising a pivoted clamping bar 3 to releasably hold a sheet of the journal and carbon paper, and another such bar 12 pivoted on the bar 3 serving to releasably clamp a sheet of the ledger is characterised by the bar 12 being moved by a knob 18 or the like controlling an eccentric 16 which acts upon a stud 15 on arm 14 forming part of the bar 12 and projecting beyond the axis of rotation 13 and on the opposite side to the bar 12 in such a manner that the bar 12 can be held in its open position. The bar 3 is pivoted as by hinges 2 to the back plate 1 and is secured in position for clamping the journal and carbon sheets by a self-closing spring-loaded catch 8. A locating pin 7 is preferably provided and a spring 5 in a recess 6 in the bar 3 serves to damp the impact of the bar 3 on the back plate 1 and raise the bar when the catch 8 is drawn back. The eccentric 16 is fixedly mounted on the shaft 17 of the knob 18, and rotation of the eccentric 16 by the knob 18 causes the bar 12 to rotate about its axis of rotation 13 ; stops may be provided to limit the rotation in both directions. A spring 20 holds the arm 14 in contact with the eccentric 16. A pointer 21 may be slidably mounted on the bar 12.
Patent GB-971472-A (GB)
Title: Improvements in or relating to metal extrusion presses
Inventor: ELGER RONALD JOHN
IPC: B21C23/21
Filed: 1962-01-19
Abstract: 971,472. Extruding; billet-piercing. LOEWY ENGINEERING CO. Ltd. Jan. 18, 1963 [Jan. 19, 1962], No. 1983/62. Headings B3H and B3P. In a metal working press, particularly an extrusion or billet-piercing press, having a number of billet containers 16 movable successively into the press axis, a cooling fluid is applied to the pressing tool when it is retracted from the container. A pair of containers are mounted on a carrier 13 rotatable about one of the press tie-rods 12 and during extrusion the operative container is pressed against the extrusion die 19 by a sealing platen 14 actuated by a pair of hydraulic cylinders 17. These are disposed in the main platen 10 carrying the main cylinder 15 driving the pressing stem 20 within which slides a mandrel 21. After the extrusion the sealing platen and container are moved rearwardly, the mandrel 21 is withdrawn, the discard is severed by a saw between the die and container and the carrier is rotated to bring the discard opposite an ejector ram 25. Immediately upon its withdrawal the mandrel is cooled by gas, air or water jets from a U- shaped device 40 supplied through pipe 42 and mounted to be moved radially of the press axis by an hydraulic motor 45 mounted on the platen 14. The device may also cool the pressing stem 20. A fresh hollow billet 32 heated to extrusion temperature, and a pressing disc 33 are then raised by an hydraulic motor 29 and pushed into the container 16 by the ram 25. In another embodiment, Fig. 7 (not shown), the container is pressed against the die by a pair of plungers and the cooling device is carried by a ram mounted on the press base. The supply of coolant may be controlled automatically by the movement of the device 40. Reference is made to the hot extrusion of copper, steel, nickel and their alloys.
Patent GB-748244-A (GB)
Title: Improvements relating to couplings for tubes and rods
IPC: F16L19/10
Filed: 1954-01-22
Abstract: 748,244. Pipe and rod joints. WURZ BURGER, P. D. Jan. 22, 1954 [Jan. 23, 1953], No. 2011/54. Addition to 737,556. Class 99(1). In a joint of the kind in which a securing and sealing ring E is deformed to grip a pipe or rod T by compression between coupling members such as a fitting B and nut N, the ring comprises a main body 10 having an internal, frontal cutting edge 12, a front face 14 sloping rearwardly, at an angle of 75 to 80 degrees to the axis of the ring, and a conical surface 7 adapted to be engaged by the nut, and comprises also a forward extension 11 adapted to yield under pressure applied by the members B, N to permit inward radial and forward axial movement of the edge 12. The extension is one quarter as thick as the ring body 10 ; its thickened end 8 and the pipe abut the end surface 2 of the fitting B. The surface 7 is inclined to the joint axis at 45 degrees and the surface 6 of the nut at 10 to 20 degrees less. In a preferred form the rake of the face 14 is half the angle between the faces 6, 7. The surface 6 first engages the edge 3 of the ring, moving the edge 12 'forwards and inwards to dig into the pipe. The ring part 10 is then tilted, buckling the web 11, until the faces 6, 7 engage, and a short extension 17 of the ring is forced into the pipe. The mean length of the ring body 10 is equal to its thickness. The bore of the ring is surface hardened at 16. In a modified form of joint the pipe is preformed with a buttress-shaped groove 21, Fig. 4, to receive the edge 12. The thickened end of the web 11 has an internal flange 28 against which the pipe abuts. The surface 6 of the nut terminates in a rounded shoulder 23 which engages the outer extremity of the surface 7.
Patent GB-690069-A (GB)
Title: Improvements in or relating to refining furnaces
IPC: F27B3/19
Filed: 1951-01-26
Abstract: 690,069. Tilting furnaces. DUFOUR, J., and BISTOS, A. Jan. 26, 1951 [Feb. 8, 1950], No. 2035/51. Class 51(ii) In the tiltable furnace shown material to be melted and refined is fed through an opening 18b into a chamber 1 through the top of which depends a gas outlet tube 5 formed with a depending lip 6 such that combustion gases from the burner 18, and, possibly one placed at 18a, are caused to effect a circuit within the chamber before escaping through the outlet. When the material is molten refining is effected by tilting the furnace (Fig. 2) and blowing air or oxygenated air into the chamber 1 from a blowing box 15. The refined material is discharged through an opening 17.
Patent GB-161720-A (GB)
Title: Spark plugs
IPC: H01T13/46
Filed: 1920-01-22
Abstract: 161,720. Hachmann, F. Jan. 22, 1920. Sparking. - plugs; external spark-gaps.-The plug comprises a casing 1, an insulator in three parts 14, 19, 22, a central electrode in two parts 15, 27 forming an external gap at X, and an electrode 11 carried by an aluminium sleeve 10 in the casing. The insulators 19, 22 are assembled together with the electrode 27 and with a nut 18 as a single unit which is held together by a nut 30 on the electrode and can be inserted or removed bodily from the casing by means of the nut 18. The aluminium sleeve 10 becomes hotter than the casing and consumes oil and promotes rapid combustion in the cylinder.
Patent GB-116074-A (GB)
Title: Method of and Apparatus for Automatic Control.
Inventor: CARLSTEDT RAGNAR
IPC: F01B25/00
Filed: 1918-02-05
Abstract: 116,074. Carlstedt, R. May 14, 1917, [Convention date]. Valves controlled by pilot or relay valves.- A device for regulating a current of liquid, steam, or gas, an electric current, or the speed of machinery &c. comprises a cylinder 4 connected to a casing 12, which is provided with an inlet pipe 13 for fluids, an exhaust pipe 19, a valve 14 connected to a spring controlled diaphragm 16, a pipe 20 connecting a chamber on one side of the diaphragm with a pipe 13, and a pipe 21 leading to a nozzle 23. An inverted cup or shield 31 is mounted above the nozzle in such a manner as to be sensitive to variations in the element to be regulated. When the cup is moved so as to alter the resistance to flow through the nozzle, the valve 14 is operated through the diaphragm 16 so as to vary the throttling of the pipe 11 leading to the cylinder 4, the piston 5 being thereby moved to effect the necessary regulation. The cup 31 may be carried by a counterweighted frame 30 carrying a drum 25 rotating in contact with a pulp sheet 1 in a paper-making machine or by a corrugated pressure box connected to a steam or gas conduit, the piston 5 in these cases being caused to operate a regulating-valve 3 in the pulp or steam conduit by means of a weighted rope 8.
Patent GB-1113404-A (GB)
Title: Drive for a four-roll mill stand
Inventor: SCHULZE WERNER
IPC: B21B35/12
Filed: 1966-01-17
Abstract: 1,113,404. Rolling mills. SCHWERMASCHINENBAU ERNST THALMANN VEB. 17 Jan., 1966, No. 2108/66. Heading B3M. Each of the horizontal rolls 25, 28, Fig. 1, and the vertical rolls 26, 27 of a rolling mill are driven through gear mechanisms 17-20, and a clutch, a single motor I driving all of the mechanisms 17-20. Motor 1 drives a shaft 3, Fig. 3, having bevel gears 4, 5 and a spur gear 6 mounted thereon, and the gear mechanism 17-20 are driven from shaft 3 through clutches 13-16. The output shafts of the gear mechanisms drive the rolls 25-28, Fig. 1, through clutches 21-24, which clutches permit radial displacements of the rolls.
Patent GB-648787-A (GB)
Title: Improvements in and relating to incubating apparatus for eggs
IPC: A01K41/00
Filed: 1948-01-24
Abstract: 648,787. Hatching appliances. FOSTER F., and BLOOMFIELD, C. W. Jan. 24, 1948, No. 2214. [Class 5(ii)] An incubating apparatus comprises a chamber 1 and an open ended container 7 for egg trays rotatably arranged within the chamber and means for supplying conditioned air to the chamber to pass through the container from end to end. As shown, air is drawn in by a motor-driven fan 21 through adjustable apertures and is heated by resistance elements 24. The air is humidified by means of absorbent screens 27 dipping into a water container 25. The upper end of the screen is carried by a chain wound on a spindle 28 so that the amount of exposed screen may be adjusted. The container 7 has a conical duct 13 fitted at one end and extending through an opening in wall 5, a handwheel 15 mounted on the protruding part 14 of the duct serving to rotate the container 7. Egg trays 17 of open construction are supported in the container and the eggs are retained in position by a partition of corrugated form shaped to locate the eggs in rows. Alternatively a series of bars preferably of triangular cross-section are used and are secured to the ends of the tray. In a modification air is heated and humidified in a separate chamber, the humidifying means comprising immersion heaters in an open tank of water. The air is drawn through adjustable openings in the chamber by a fan and passes over the egg trays, an adjustable air outlet being provided in a conical end door.
Patent GB-172268-A (GB)
Title: Improvements in and connected with control valve devices for air and gas purifiers
IPC: F24F8/90
Filed: 1921-01-17
Abstract: 172,268. Halbergerh³tte Ges. Dec. 1, 1920, [Convention date]. Filtering.-A control valve for air and gas purifiers through which in one position of the device the crude. air or gas passes to be purified, while in the other position a current of clean air or gas is passed through the apparatus, for example in the reverse direction, to restore its efficiency, comprises a single slide valve within a casing, designed so that one of the air or gas ducts must be shut off before the other is opened. Fig. 1 shows a filter or cleaner for air or blast furnace gas provided with a casing 2 containing a slide valve 5 large enough to cover simultaneously the ports of a connection 3 leading to the suction fan and a connection 4 leading from the fan that supplies clean air or gas to renovate the filter. The valve allows one only of these ports to be open to the filter at a time. Fig. 5 shows a piston slide valve comprising two cylindrical portions 12, 13 formed with ports 6, 7 through which the filter is connected either with the suction duct 3 or with the cleaning-gas duct 4 in its two portions; enlargements 8, 9 on the cylindrical portions engage the seating flanges 10, 11. According to the Specification as open to inspection under Sect. 91 (3) (a), Fig. 5 (Cancelled) shows a sliding sleeve valve 5, and Fig. 6 (Cancelled) shows an oscillating segmental valve 5 similarly controlling the connections 3, 4; these constructions do not appear in the Specification as accepted.
Patent GB-1087461-A (GB)
Title: Improvements in mechanism for cutting crops or like growth
IPC: A01G3/053
Filed: 1963-01-18
Abstract: 1,087,461. Mowing machines. P. L. CULLIMORE. April 17, 1964 [Jan. 18, 1963], No. 2328/63. Heading A1F. A reciprocating crop-cutter of the type comprising co-operating sets of fixed and reciprocating elements 12, 5, is characterized in that the fixed elements 12 are mounted on the cutter-bar 1 so as to be adjustable towards or away from the reciprocating elements 5 which are carried by a bar 4 guided in a channel 2 formed on or by the cutter-bar, the mounting including means for urging the two sets of elements into contact. In Fig. 1 the channel 2 is formed in the bar 1 and the fixed elements 12 comprise spring-steel rods each sharpened at one end 14 and having the other end sandwiched between upper and lower plates 8, with spacers 9. The plates are mounted on bolts 16 secured to the cutter-bar 1, the pressure between the ends 14 and the blades 5 being adjustable by wing-nuts 18 on further bolts 7. In Fig. 6, the guiding channel is formed between a ledger plate 26 and a cranked part 32 of the fixed fingers 31 which are mounted below the cutter bar and are pressed upwardly by bolts 34, against the downward pressure exerted by clips 27.
Patent GB-806705-A (GB)
Title: Improvements in or relating to a method of treating bones
IPC: C09H3/00
Filed: 1956-01-25
Abstract: In the treatment of bones with superatmospheric steam the formation of disagreeable odoriferous and nauseous substances in the product is prevented by removing as much as possible of the free oxygen from the autoclave containing the bones prior to the introduction of steam. The oxygen is preferably removed by evacuating the atmosphere from the autoclave.  In order to facilitate milling of the bone product excess water may be removed therefrom by passing heated air and/or unsaturated steam through the autoclave at the conclusion of the treatment with superatmospheric steam.ALSO:In the treatment of bones with superatmospheric steam the formation of disagreeable odoriferous and nauseous substances in the product is prevented by removing as much as possible of the free oxygen from the autoclave containing the bones prior to the introduction of steam.  The oxygen is preferably removed by evacuating the atmosphere from the autoclave.  In order to facilitate milling of the bone product excess water may be removed therefrom by passing heated air and/or unsaturated steam through the autoclave at the conclusion of the treatment with superatmospheric steam.
Patent GB-787882-A (GB)
Title: Desdimethylaminotetracyclines and pharmaceutical preparations containing same
IPC: C07C233/00
Filed: 1956-01-25
Abstract: The invention relates to desdimethylaminotetracycline and desdimethylaminobromo-tetracycline of formula <FORM:0787882/IV (b)/1> wherein R represents hydrogen or bromine.  They are prepared by reducing tetracycline hydrochloride or bromotetracycline hydrochloride by zinc in the presence of glacial acetic acid and sodium acetate.  The reaction takes place at 30-32 DEG  C. in an atmosphere of nitrogen and is completed in 5 hours.  The product is filtered, evaporated to dryness, suspended in methyl alcohol and treated with hydrochloric acid.  Desdimethylaminotetracycline may also be prepared by treating bromotetracycline or chlorotetracycline with hydrogen at ordinary pressures with 5 to 10 per cent palladium catalyst on charcoal in the presence of a solvent such as methoxyethanol, diluting with water and precipitating by acidifying to a pH 2.0.  The compounds have antibacterial activity and are used in pharmaceutical compositions (see Group VI).  Specifications 690,381 and 772,149 are referred to.ALSO:Therapeutic compositions comprise a desdimethylaminotetracycline of formula <FORM:0787882/VI/1> wherein R denotes hydrogen, chlorine or bromine and a liquid or solid pharmaceutical carrier.  The composition may be in the form of a tablet, granule, capsule, powder, solution or suspension for oral or parenteral use.  Tablets are prepared with excipients such as starch, talc, stearic acid, magnesium stearate, sucrose, p  lactose, sodium benzoate, carbowax and "Tween 80" (Registered Trade Mark).  Suspensions are prepared with a suspending agent such as gum arabic.  Suppositories are prepared by incorporating the medicament in cocoa butter.  An anti-infective drying powder contains desdimethylaminobromotetracyline, tyrothricin, chloramphenicol, boric acid and lactose.  Specifications 690,381 and 772,149, [both in Group IV (b)], are referred to.
Patent GB-230960-A (GB)
Title: Improvements in holders for fire extinguishers
IPC: A62C13/78
Filed: 1924-01-31
Abstract: 230,960. Morris, C. Jan. 31, 1924. Extincteurs; port able pressure reservoirs. -A stand for portable fire-extinguishers com prises an annular base A with an upwardlv ex tending flange a to fit inside or outside the recess at the base o the extinguisher, the flange having L-shaped slots which are en gaged by a cross-bar b or by projections from the base of the extinguisher. One end b<2> of the bar b<1> engages an upright C and is locked in position by a pivoted lever c. The extinguisher seats on a rubber ring D and may be engaged by studs on the flange a. The top of the flange may be bevelled to facilitate removal of the extinguisher. The stand is fixed in position by lugs a<3>.
Patent GB-345405-A (GB)
Title: Manufacture of artificial silk of dull lustre from viscose
IPC: D01F2/12
Filed: 1930-01-24
Abstract: Artificial silk of dull lustre is made by spinning viscose to which an acid amide, substituted or unsubstituted but insoluble in water and in viscose, has been added at any stage of the manufacture.  The amide is soluble in the acid spinning bath or in the washing water used for removing the acid, and is accordingly dissolved away from the thread during the manufacturing process. The amide may be added in solution in a water-insoluble organic solvent, and to assist emulsification, a wetting may be added also, e.g. an alkylnaphthalene sulphonic acid.  Crude mixtures of acid amides may be used.  Carbonic acid dianilides or dialkylanilides, e.g. diethyl-di-o-tolyl-urea, are mentioned as suitable amides.
Patent GB-752801-A (GB)
Title: Improvements relating to brown tetrakisazo dyestuffs suitable for dyeing leather
IPC: D06P3/32
Filed: 1954-01-28
Abstract: The invention comprises tetrakisazo dyes of formula:-<FORM:0752801/IV(c)/1> wherein A is a p-phenylene, radical methyl substituted if desired, one X is hydrogen and the other X hydrogen or methyl and Y is the direct linkage or a bridging member of the formula -NH-CO- or NH-NH-CO-NH-.  The dyes are prepared by reacting the monoazo dyestuff from diazotized 1 - amino - 8 - hydroxynaphthalene - 3 : 6 - disulphonic acid and 1 : 3 - dihydroxybenzene in an alkaline medium, on the one hand with an equimolecular amount of the diazo compound of a monoaminonaphthalene disulphonic acid (I) and on the other hand with an equimolecular amount of the unilateral coupling product obtained from a tetrazotized 4 : 41 - diaminodiphenyl compound from the diphenyl, benzanilide and diphenyl urea group which can be methyl substituted (II) and 2 - -hydroxybenzene - 1 - carboxylic acid coupled parato the hydroxyl which may also be substituted in the 3- or 4-position by methyl (III).  The dyes dye leather in brown shades.  In Examples (1-3) the following components are specified: (I) 1 - aminonaphthalene - 3 : 6 -, - 3 : 8 -, - 4 : 6 -, - 4 : 7 -, - 4 : 8 - and - 5 : 7 - disulphonic acids and 2 - aminonaphthalene - 3 : 6 -, - 4 : 7 -, - 4 : 8 -, - 5 : 7 -, and - 6 : 8 - disulphonic acids; (II) 4 : 41 - diaminodiphenyl, 4 - (41 - aminobenzoylamino) - 1 - aminobenzene, 3 : 31 - dimethyl - 4 : 41 - diaminodiphenyl, and 4 : 41 - diaminodiphenyl urea; (III) 2 - hydroxybenzene - or 3 - or 4 - methyl - 2 - hydroxybenzene - 1 - carboxylic acids.
Patent GB-741233-A (GB)
Title: Improvements in and relating to collecting and baling presses for straw, hay or the like
IPC: A01F15/10
Filed: 1953-01-29
Abstract: 741,233. Step-by-step conveyers. WELGER, O., NESTLER, H., and WELGER, K., [trading as WELGER, GEB.]. Jan. 29, 1953 [Sept. 12, 1952], No. 2620/53. Addition to 707,594. Class 78(1). [Also in Group XVII] A pick-up baler as claimed in the parent Specification and wherein the conveying rake is moved over the collecting table by a crank mounted near the baling chamber has the conveying rake controlled by parallel linkage mechanism so that the rake moves parallel to itself. A rake 12, Fig. 1, having three prongs 14, 15 and 16, is reciprocated over a collecting table 9 by a crank 13 above a baling chamber 11 having a lateral feed opening 10, through which the rake feeds material to be baled and the rake 12 is controlled by parallel linkage means 21, 22, 23 so that it moves parallel to itself. The link 22 is pivotally connected at one end to an arm 24 projecting from the rake and at the other end to a carriage 21 running on the rail 26, the link 23 being pivoted to the carriage 21 and to the rake. In another embodiment, Fig. 3, the rake 12 is controlled by a link 18 pivoted at one end to the arm 24 on the rake and at the other end to an arm 17 pivoted to the machine frame and by a link 19 pivotally connecting the arm 17 and a crank return. A plurality of rakes side-by-side may be provided.
Patent GB-138692-A (GB)
Title: Improvements in and relating to walls
IPC: E04B2/28
Filed: 1919-02-03
Abstract: 138,692. Coggan, W. H. Feb. 3, 1919. Moulds. - A number of slabs are moulded, simultaneously in a mould box provided with partitions m and removable sides l, the inner surfaces of which are provided with tongues and grooves to mould end grooves and tongues g, and with tapered bars n for forming grooves in the upper and lower edges of the slabs. The bars n engage with notches o in the sides of the box, and those for forming the grooves in the upper edges of the blocks are placed in position after the mould box has been filled with concrete and while the latter is still soft. A similar mould box is described for moulding angled slabs.