baber/WOPTO huggingface dataset:
Patent GB-1045823-A (GB)
Title: Improvements relating to multiple magnetic reed switch
IPC: H01H36/00
Filed: 1965-03-29
Abstract: 1,045,823. Magnetic switches. INTERNATIONAL BUSINESS MACHINES CORPORATION. March 29, 1965 [April 28, 1964], No. 13163/65. Heading H2B. A multipole manual switch comprises a permanent magnet 40 slidable in a channel 32 between two extreme positions in one of which it closes a sealed magnetic contact unit 38 and opens a similar unit 37 and in the other of which it closes unit 37 and opens 38. The magnet is movable at an angle to the contact units so that in the centre position one of the reeds of one unit shunts flux away from the operative air gaps. The contact units 37, 38 are mounted in recesses 28, 30 of one half 11 of the switch body, and two further units are mounted in recesses in the other identical half 10 of the body. A lever 46, pivotally mounted in recesses such as 23 in the body halves 10 and 11, bears on the magnet 40 which is biased up. wardly by spring 44 and is actuated by a dolly 22 pivoted in a bracket 18 clipped to the switch body. The dolly is guided in a resilient detent which is designed either to ensure that it cannot dwell between its extreme positions (Fig. 4, not shown) or to provide a centre position (Figs. 7 and 8, not shown) in which all the contact units are open. The dolly may be replaced by a pushbutton which is retractable by the spring 44.
Patent GB-118889-A (GB)
Title: Improved Automatic Telephone Sub Station Mechanism.
Inventor: STEVENS ALTON EMERSON
IPC: H04M1/32
Filed: 1917-09-14
Abstract: 118,889. Stevens, A. E. Sept. 14, 1917. Automatic exchange systems; impulse-transmitters; desk sets.-Prior to the removal of the receiver from its switch-hook, the selecting-disk of an impulse - transmitter may be moved manually beyond and then back to the position required for calling any desired station, but the removal of the receiver locks the dial against any forward movement and allows its return to normal position by a spring under control of a centrifugal brake. As the dial reaches normal after sending the last impulse, a ringing-circuit is momentarily closed, and in the normal position, a circuit is prepared for rendering operative a manual ringing-key. The impulsetransmitter is mounted on the base of a disk set, the base containing the usual induction coil, terminal connexions, and hook-switch springs. The transmitter is designed for use in the system described in Specification 118,691. The dial 7, Fig. 2, rotatable by the knob 6, is secured to a shaft 8 carrying a wheel 20 geared to the impulse-wheel 21, Figs. 6, 7, and 10, which has cam-projections 23 adapted to engage a V- shaped bend 38, Fig. 6, on the impulse spring 36. The impulse-wheel 21 is provided with ratchet teeth 24 engaged by a spring-controlled pawl 28 pivoted on an arm 27, itself pivoted to a shaft 26. The teeth of the impulse-wheel 21 co-operate with a locking-pawl 29, also pivoted to the arm 27, the arrangement being such that, when the receiver is on its hook, the shaft 26 is in a position such that the pawl 29 is out of engagement with the wheel 21 while the pawl 28 engages the ratchet teeth 24 to hold the wheel 21 in its set position, but owing to the pivotal connexion of the pawl 28 on the arm 27, the wheel 21 can be turned forwards and backwards by hand. When the receiver is removed, the shaft 26 is rocked, thus bringing the locking-pawl 29 into action to prevent forward movement of the dial and withdrawing the pawl 28 so that the dial and impulse-wheel are returned to normal by a coiled spring, under control of a centrifugal brake, Fig. 9, comprising a frame 15<1> wherein are pivoted at 18 two levers 17 having weights 16 and upturned ends 19 engaging the outer surface of the spring drum 14, Fig. 6. The frame 15<1> carries a pawl 12 whereby the brake mechanism is driven from a pinion 11, loose on the shaft 8 and geared to the impulse-wheel. The shaft 26 carrying the pawls 28, 29 has at its other end a V-shaped arm 32, Fig. 7, carrying a cam 33 engaged by one end of a lever, the other end of which operates the usual switch springs, and is engaged by the lower end of a rod pressed upwards by a spring and pivoted to the switch hook. The impulse-sending mechanism, including the shaft 26, is mounted on a frame 15, which is readily removed from the standard, connexions being made by springs 42 - - 45, Fig. 6, engaging corresponding springs in the base of the standard.
Patent GB-1457964-A (GB)
Title: Articulated railway wagons
IPC: B61D3/18
Filed: 1974-03-25
Abstract: 1457964 Articulated railway wagons SOC NOUVELLE DES ATELIERS DE VENISSIEUX 25 March 1974 [10 May 1973] 13220/74 Heading B7L An articulative railway wagon comprises a plurality of chassis e.g. 1, 2, adjacent chassis being articulative by an articulation 3 permitting movement about horizontal and vertical axes and situated in the central longitudinal vertical plane of the chassis, the free end of each end chassis each being supported by conventional suspension 5 or 7 and wheeled axles 4 or 6 supported on a railway track, the coupled-ends of two adjacent chassis e.g. 1, 2 each resting by slide blocks 12 on smooth faces 13 or a common supporting frame 8 supportable by suspension 10 and a wheeled axle 9 on the railway track wherein the friction between the slide blocks 12 and the faces 13 is adjustable by a respective connecting rod 15 articulated at 16 to an element 17 of the chassis 1 and 2 which tie rod 15 passes with clearance through the frame 8. Tension of the rod 15 is adjusted by a nut 18 with the interpositioning of a washer 19. There may be more than three chassis.
Patent GB-785688-A (GB)
Title: Fuel feed and power control system for gas turbine engines
IPC: F02C9/16
Filed: 1954-05-06
Abstract: 785,688. Gas turbine plant. BENDIX AVIATION CORPORATION. May 6, 1954 [May 27, 1953], No. 13258/54. Class 110 (3). [Also in Group XXIX] Compressor surge in a gas turbine engine during acceleration is prevented by producing pulsations in the pressure of fuel supplied to the burners and providing means responsive to the resulting pulsations in the compressor discharge pressure to control the amount of fuel delivered to the engine. The fuel flow is reduced in response to diminution of the amplitude of the pulsations which occur as the surge condition is approached. In an embodiment fuel passes from a pump 22 to a primary fuel control unit 24 and thence through a normally open valve 110, conduit 30 and device 32 for producing the pulsations, to the burners 18. The device 32 consists of a rotor 58 driven by an hydraulic motor 60 powered by pressure fuel and governed by a constant head regulator 66. A valve 134 maintains a constant pressure drop across the valve 110. A diaphragm 94 is tuned to vibrate at the frequency of the pulsations in the compressor discharge pressure and actuates an armature 100 to produce electric signals which are amplified, rectified and compared with a reference voltage and then fed to a torque motor 108 which actuates a piston valve 116 controlling a servo-piston 112 connected to the valve 110. As the surge condition is approached and the vibration of the diaphragm 94 diminishes the piston valve 116 is raised to admit pressure fuel to the upper side of the piston 112 and exhaust the lower side to move the valve 110 towards closure. A feedback connection from an armature and coil assembly 159 actuated by the servo-piston to an amplifier 106 in the circuit between the armature 100 and the torque motor 108 prevents over-shooting of the valve 110. A second diaphragm 168 tuned to vibrate at the acoustic frequency of the engine when operating in the surge region becomes operative should the diaphragm 94 &c. fail. The diaphragm 168 operates an armature 174 to produce an electric signal which, after amplification &c., energizes the torque motor 108. In a modification, the fuel pressure pulsations are produced by an electrically oscillated valve and the diaphragms 94, 168 operate valves instead of the armatures 100, 174. These valves control pressure of fuel acting on diaphragms which coact with a lever connected to the piston valve 116. The feedback connections 159 is omitted. Specification 785,687, [Group XXXVIII], is referred to.
Patent GB-769811-A (GB)
Title: Improvements in or relating to methods of producing selenium rectifier plates
IPC: H01L21/14
Filed: 1955-05-09
Abstract: 769,811. Selenium rectifiers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 9, 1955 [May 12, 1954], No. 13342/55. Class 37. Selenium rectifier plates are produced by applying a selenium layer and a counter electrode layer of an alloy containing cadmium successively to a supporting plate, which is first heated in a protective environment, for example a gas such as argon, helium, nitrogen, hydrogen or other reducing gas or mixture, without an appreciable electric voltage being applied, after which the electric formation is effected. Heating is preferably effected to a temperature of between 75‹ C. and the melting point of the alloy.
Patent GB-253101-A (GB)
Title: Electric discharge tubes and apparatus for producing flashes
IPC: H05B41/34
Filed: 1926-05-26
Abstract: 253,101. Seguin, L., and Seguin, A. June 4, 1925, [Convention date]. Addition to 248,743. Controlling lighting systems.-In apparatus for producing flashes in a discharge tube at predetermined intervals, as described in the parent Specification, the tube is connected in series with a spark-gap and a condenser, the voltage across which is insufficient to produce a discharge, and a synchronizer controls the passage of a current of high tension but small energy through an auxiliary circuit in parallel with a part of the main circuit, so as to start the discharge. As shown in Fig. 1, a terminal of the condenser A and a terminal of the tube 3 are earthed and the spark-gap 2 or the tube is shunted by a circuit comprising a condenser 6 and the secondary 5 of a transformer, the primary 7 of which is connected in series with a contact-breaker 10. In the arrangement shown in Fig. 4, the secondary 5 is shunted with condensers 6, 6<1> across the tube and spark-gap respectively, and the primary 7 is energized by a condenser 11, the charge and discharge of which are controlled by a contact-breaker 12; or the condenser 11 may be charged continuously and discharged through a resistance and the primary. The Specification as open to inspection under Sect. 91 (3) (a) comprises also arrangements in which the winding 5 is connected in series with the tube and arranged as an auto-transformer. This subject-matter does not appear in the Specification as accepted.
Patent GB-134729-A (GB)
IPC: B23B29/03
Abstract: 134,729. Clarke, G. Feb. 26, 1919. Cutter-bars.-In a cutterbar A with self-centring cutter F passing through a slot in the bar, the cutter F has an enlarged central portion engaging an internally-coned surface G of the sliding collar D, and may also have a pin H engaging a central hole K in the cutter-bar. Removable guidecollars L may be fitted on the front of the bar.
Patent GB-1015452-A (GB)
Title: Manufacture of thermoplastic polyamide ureas
IPC: C08L75/02
Filed: 1963-04-04
Abstract: A polyamide-urea is made by the condesation of at least one amine of the formula (I) <FORM:1015452/C3/1> where R1, R2 and R3 are divalent hydro-carbon residues and x is a number from 1 to 5, or a mixture thereof with a bifunctional amine and carbonic acid or a reactive substitution product thereof.  When the carbonic acid substitution product is urea an o -amino-alkylene urea or o : o -alkylene-bis urea the reaction is effected in two stages firstly at 120 DEG  to 140 DEG C. and then at 160 DEG  to 300 DEG C.  Specified reactive substitution products of carbonic acid (under superatmospheric pressure) phosgene e.g. by the interfacial method) carbonic acid esters, diimidazolyl carbonyls and the above specified ureas.  The compounds of the formula (I) may be made by reacting 1 mol. of dicarboxylic acid (e.g. dimerized fatty acids) with more than 1 mol. of diamine, e.g. tetramethylene, pentamethylene, hexamethylene, heptamethylene, octamethylene, nonamethylene, decamethylene, undecamethylene, dodecamethylene and m- and p-xylylene diamines, 9-aminostearylamine, 10 - aminostearylamine, 10 - aminomethylstearylamine, 9 - aminomethylstearylamine, 4:41 - diaminodicyclohexyl methane; ethane and propane, 1:4-bis-[amino-methyl] - cyclohexane, 1:3 - and 1:4 - diaminocyclohexane, 4:4 - and 3:31 - diaminodicyclohexyls 1:1 - bis - (p - aminocyclohexyl)-cyclohexane and 4:41-diamino-3:31-dimethyl-dicyclohexylmethane, the specified diamines also being suitable for use as co-reactants in the formation of the polymers.
Patent GB-816925-A (GB)
Title: Colouring cellulosic textiles
Inventor: RATTEE IAN DURHAM
IPC: D06P3/66
Filed: 1956-05-02
Abstract: Cellulosic textile materials are dyed or printed by applying an aqueous solution of a phthalocyanine dyestuff of the formula <FORM:0816925/IV (c)/1> wherein (Pc) represents a phthalocyanine radical, Y represents a direct link or a divalent bridging radical and the system (Pc)-Y-contains at least one solubilizing group, R represents hydrogen, alkyl, aralkyl or cycloalkyl, A represents chlorine or O-B, where B is a hydrocarbon radical which may be substituted and n is a whole number, and also applying before, during or after the application of the dyestuff, an aqueous solution containing up to 3 per cent by weight of an acid-binding agent such as caustic soda, caustic potash, sodium carbonate or bicarbonate, trisodium phosphate or sodium metasilicate.  A subsequent heat or steam treatment may be applied.  The usual adjuvants such as sodium sulphate or alginate, cellulose ethers, urea, starch and locust bean gum may be added to the dyebath or paste.  Numerous dyestuffs are specified, and numerous examples are given.  Specifications 515,637, [Group IV], and 805,562 are referred to.
Patent GB-135303-A (GB)
IPC: B41J3/38
Abstract: 135,303. Spencer, A. P. Nov. 22, 1918. Medals.-Apparatus for embossing, specially designed for stamping names &c. on medals, is constructed after the manner of a typewriter, the type bars or levers 2, Fig. 1, being weighted at 3, according to the size or style of the characters, to secure uniform depth of impression. The medal is supported in a lead casting 15, Fig. 2, cast around the medal to secure a proper bearing and afford complete protection to the design. The bed 15 is carried by a frame 10 fed by rack and pinion 8 actuated by ordinary typewriter spacing- mechanism. Line spacing is obtained from the screw 13. When the edges are to be embossed, the medal or other article is held by a rubber pad 38, Fig. 3, in a recessed head 20 apertured at 22 to admit the type-bars. Spacing is effected by a ratchet-wheel and pawl 25 actuated by the ordinary spacing-mechanism. The pad 38 is carried by a ball-bearing head from a cam and spring- controlled spindle 30.
Patent GB-135358-A (GB)
IPC: B21J7/44
Abstract: 135,358. Homersham, T. H. C., and Berk, F. W. Jan. 4, 1919. Band.-A pair of band brakes of the differential type employed in a drop hammer have the leverages of the controlling arms so adjusted that one of the brakes, that on the drum D, applies itself automatically. The control lever of the hammer is linked to the lever L on a rock shaft C common to both brakes. When the lever L is raised a cam L<8> lifts the lever L<6> and frees the band on the drum D. A projection L<5> adjustable on a lever arm L<4> controls the other end of the band. When the lever L is depressed, a link L<10> applies the brake on the drum D'. The fulcra L' are spring-controlled to prevent too sudden an application of the brakes and avoid friction of the bands.
Patent GB-369783-A (GB)
Title: Improvements in or relating to liquid levels
IPC: G01C9/30
Filed: 1931-05-07
Abstract: 369,783. Spirit levels. AKT.-GES. C. P. GOERZ OPTISCHE ANSTALT, (known as ACTIOVA SPOLECNOST K. P. GOERZ OPTICKY USTAV), Pressburg, Czecho- Slovakia, HOFE, C. VON and SCHIER, J., 5, Sonnleithnergasse, Vienna. May 7, 1931, No. 13577. [Class 97 (ii).] To reduce the alterations in size of the bubble due to variations in temperature, a spheric level, such as a focusing level, communicates with a resilient chamber containing an air space having a volume greater than that of the bubble. In the form shown, the liquid 6 and bubble 6a are enclosed between lenses 3, 5 separated by the ring 4 and supported in the telescope tube 1. A slit 4a in the ring 4 communicates with a resilient chamber 9 partly filled with air 9c. A plate 10 fitting on the centre stud of a cap 12 bears on the chamber 9. By turning the cap 12 which is threaded on the cover 13 the size of the bubble may be controlled. The plate 10 and stud 11 are made of material of small coefficient of expansion, e.g. steel, and the cover 13 and cap 12 of material of high coefficient of expansion, the differential expansion of the parts then causing a pressure on the chamber 9 sufficient to keep the size of the bubble constant.
Patent GB-213873-A (GB)
Title: Method of manufacturing framed enamelled writing tablets
IPC: C23D5/00
Filed: 1923-05-23
Abstract: 213,873. Leeuwenburg, J. P. April 4, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Writing tablets. - In the manufacture of enamelled sheet metal writing tablets, the edges of the metal sheet are shaped mechanically to form a frame before submitting it to the enamelling process, the frame sections being so shaped as to enable the internal stresses caused by the mechanical and enamelling operations to equalize themselves. In one construction, the longer sides are formed with a more or less rounded flange 2, and variouslyshaped indentations 4, 5 are formed in the shorter sides. Alternatively, the flanges are formed around the whole sheet and portions of the flanges, preferably at the corners, are removed.
Patent GB-412390-A (GB)
Title: Improvements in or relating to the manufacture of hollow metal rods, bars and the like, especially for the production of hollow drill steel
IPC: B22D19/00
Filed: 1933-05-11
Abstract: 412,390. Making cased hollow bars. GEJROT, C. J., Bofors, Sweden. May 11, 1933, No. 13663. [Class 83 (ii).] In making hollow metal bars, such as drill steels, composed of three or more layers, metal is cast round a tube in different casting operations and the composite blank produced in each operation is subjected to a reducing operation, such as rolling or drawing, before effecting the next casting operation. After the final casting operation a final reducing operation is effected. The layers may be of the same or different materials. Thus the innermost layer may be of stainless iron or steel, e.g. containing 0À1 per cent of carbon and 12-14 per cent of chromium, and the second layer of common straight carbon steel, or the innermost layer may consist of straight carbon steel and the second layer of stainless iron or steel or other alloy. The remaining layer or layers may consist of steel of the required hardness and toughness.
Patent GB-651544-A (GB)
Title: Improvements in or relating to the preparation of enzymes
IPC: C12N9/26
Filed: 1948-05-20
Abstract: Hyaluronidase is prepared from finely-divided mammalian testicular tissue by adding water thereto, adjusting the pH of the aqueous mixture to 4.5-4.7 (preferably 4.6), separating the solid material after prolonged stirring (preferably for at least 12 hours), adjusting the pH of the liquid to 7.5-9.2 (preferably 8.0-8.2), separating the resulting precipitate of inactive solid material, adjusting the pH of the liquid to 5.9-6.3, again separating precipitated inactive solid material, adjusting the pH of the liquid to 4.6-7.0 (preferably 4.6-4.8), adding alcohol in such amount that the volume percentage thereof in the liquid is 20-30 (preferably 27-30), separating the further precipitate of inactive solid material, and adding more ethyl alcohol to the liquid to increase the volume percentage thereof to 45-55, thereby producing a precipitate containing hyaluronidase, which is separated from the liquid and may be redissolved in water and the solution diolysed against running water, filtered and evaporated to dryness, the whole process being conducted at a temperature below 5 DEG  C.  An example describes the application of the process to bull testes, which are prepared for treatment by freezing in dry ice, removing the outer membrane, grinding to powder in the presence of dry ice, allowing the dry ice to evaporate and further grinding the material in a Waring blender.
Patent GB-562550-A (GB)
Title: Improvements in or relating to ship construction
IPC: B63G8/00
Filed: 1942-10-02
Abstract: 562,550. Ships' hulls. GUNNING, M. F. Oct. 2, 1942, No. 13824. [Class 113 (ii)] The hull of a submarine or other vessel is made in at least three longitudinal parts A, B, C, of circular section, the longest part lying above and between two others disposed side by side, and projecting beyond them both fore and aft ; all of them are able to withstand water pressure. The uppermost compartment A may have loading and discharge openings at the ends. Plating F encloses the hull compartments, which communicate by passages. The upper compartment A provides living room and opens to the conning tower G. The lower compartments B, C, which have fore and after extensions B<1>, B<2>, C<1>, C<2> of less diameter, contain the engines, &c. propelling the screws J. Auxiliary compartments D, E contain the batteries and stores. Fuel tanks K extend over the midship section, and ballast tanks are disposed between and fore and aft of the lower hulls B, C. The bulkheads of the fuel tanks may be arranged to minimize the free surface of the ballast water during filling and emptying.
Patent GB-1504922-A (GB)
Title: Pressure-operated dispensing nozzle
IPC: F04F5/46
Filed: 1975-04-04
Abstract: 1504922 Jet pumps SRC LABORATORIES Inc 4 April 1975 [18 April 1974] 13834/75 Heading F1E In a pressure-operated dispensing nozzle, a secondary fluid is entrained in two stages by a flow of pressurized fluid which enters a housing 11 by a port 14, entrains a flow 19 secondary fluid in passing into a first passage 17 in a first annular member 18, and entrains another flow 22 secondary fluid in passage from the first passage into a second passage 21 in a second annular member 20 and then the combined fluid leaves via exit 21b in passage 21. The distance between the two annular members may be varied on releasing screw 23 and moving member 20, which allows adjustment of flow 22 in response to changes in the pressure difference between the ambient atmosphere and the secondary fluid. Screw 23 may be replaced by a spring-loaded plunger fitting into a series of indentations in member 20 to provide distance settings for the members, Fig. 2 (not shown). Either or both fluids may be air.
Patent GB-710947-A (GB)
Title: Improvements relating to couplings between tractors and trailers
IPC: B60D1/38
Filed: 1951-06-12
Abstract: 710,947. Vehicle couplings. JEFFES, R. H. F. July 30, 1952 [June 12, 1951], No. 13874/51. Class 103(5) To facilitate coupling a trailer to a tractor the latter is provided with three sleeves 11 which accommodate the coupling elements 30 provided with a coupling eye 31. The inner end of the part 30 is secured to a flexible cable 23 acted on by means such as a hydraulic ram and when coupling has been effected the part 30 is retained in position by the spring-pressed plunger 32. To couple up, the plunger 32 is raised by the lever 36, 37 and the part 30 withdrawn until the eye 31 can be connected to the trailer. Actuation of the hydraulic ram on the cable 23 pulls the part 30 back into the sleeve 11 where it is automatically retained by the plunger 32.