baber/WOPTO huggingface dataset:
Patent GB-861918-A (GB)
Title: Preparation of polycarbonate in particulate form
Filed: 1959-04-28
Abstract: A macromolecular polycarbonate of bisphenol-A (i.e 2,2-(4,41-dihydroxydiphenyl)-propane) in particulate form is obtained from a solution of the polycarbonate in di- and/or trichloromethane by mixing the solution with water and with a dimethylbenzene, evaporating the organic solvents and recovering the precipitated polycarbonate.  If the solution is stirred during the evaporation, the polycarbonate is obtained in the form of granules, otherwise it is obtained in the form of a powder, or (if a large amount of dimethylbenzene is used) is obtained in the form of a coarsely-divided mass which can be triturated to a powder. Evaporation of the organic solvents may be effected by direct heating or by passage of steam through the solution ; in the latter case it is unnecessary to add water to the polycarbonate solution before the evaporation.  The polycarbonate particles, after drying in vacuo, may be used in the manufacture of threads, fibres, films, foils or injection moulded or extruded articles.  In examples, the polycarbonate solution is obtained by (1) and (2) adding phosgene to a stirred mixture of bisphenol-A, dichloromethane, sodium hydroxide, water and sodium dithionate, then adding first triethylbenzyl ammonium chloride and dichloromethane and later additional dichloromethane, and finally washing the dichloromethane layer with dilute sulphuric acid and water ; (3) adding phosgene dissolved in trichloromethane to a stirred mixture of bisphenol-A and pyridine, then adding successively dichloromethane, further phosgene solution and then further dichloromethane, and lastly washing the organic solution with dilute hydrochloric acid and water ; (4) adding a solution of bisphenol-A in pyridine and trichloromethane to a stirred solution of the bis-chlorocarbonate of bis-phenol-A in trichloromethane and washing the organic solution with dilute hydrochloric acid and water.  Specification 772,627 is referred to.
Patent GB-330107-A (GB)
Title: Improvements in weighing apparatus
IPC: G01G1/06
Filed: 1929-05-10
Abstract: 330,107. Fitzpatrick, H. D., (Naamlooze Vennootschap Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen). May 10, 1929. Pendulum-weight apparatus.-A weighing-apparatus of the type employing duplex load-counterbalancing devices is provided with a distributing member which carries or supports an element for operating the indicator and is connected to at least one of the duplex load-counterbalancing devices by a plate or blade spring or similar elastic member in such a manner that lateral oscillation of the distributing member will be resisted. As shown, duplex pendulous members 2 suspended by flexible bands 3, 4 are actuated to balance the load, by the upward thrust of a push rod 10<2>, and the movement is transmitted to the indicating pointer 23 by arms 12 adjustable as described in Specification 330,108, blade springs 15 pivoted to the arms and secured to a distributing bar 17, a rack 18, and a pinion 22. The blade springs 15 resist the tendency of the distributing member to oscillate in a lateral direction. Tn a modification, the springs 15 extend upwardly from the arms 12 and the rack 18 is adjustably attached to the distributing bar 17 by a bolt and spring.
Patent GB-1571712-A (GB)
Title: Accumulator casings
IPC: H01M50/262
Filed: 1977-04-07
Abstract: The construction of the lead-acid accumulator is intended to make the known attachment types possible for vehicles by means of attachment strips. The lead-acid accumulator is intended to be capable of attachment to different vehicles without further modifications. The plastic housing (2) of the lead-acid accumulator (1) is provided in the region of its base, on the side walls (4, 5, 6, 7), with in each case one attachment strip (9, 11) of integral construction. These attachment strips (9, 11) supplement one another to form a continuous attachment strip, only the edge regions being cut out. On the two narrow sides (4, 6), the attachment strips are provided centrally with a notch which is used to improve retention. The upper surface of the projecting attachment strips (9, 11) is bevelled in a roof shape. The upper surface of the attachment strip, which is bevelled in a roof shape, merges on the narrow sides (4, 6) of the housing (2) at right angles into a bevelled lower surface or supporting profile (14) of an upper attachment strip (15, 16), in each case on a narrow side (4, 6) of the housing (2). The upper surface of the upper attachment strips (15, 16) is likewise of bevelled construction and is in each case provided with a notch (12, 13) which is aligned with the notch mentioned above. <IMAGE>
Patent GB-1534311-A (GB)
Title: Load-reducing control
IPC: H02P9/14
Filed: 1976-04-12
Abstract: 1534311 Automatic control of generators CATERPILLAR TRACTOR CO 12 April 1976 [25 Aug 1975] 14856/76 Heading G3R In a generator set driven by an internal combustion engine, a load signal is produced representing a function of the output voltage and the load current of the set. If the load signal exceeds a predetermined level, the output voltage is reduced so as to prevent engine lug, by varying the input impedance of a voltage regulator. As shown in Fig. 1, a wattmeter circuit 18 is responsive to the current and voltage on output buses 12 of an alternator 10 to produce a load signal on lines 32, 34. The load signal is compared in a differential amplifier 40, 42 with a Zener diode voltage 46. When the load signal is less than the Zener voltage, a transistor 50 conducts fully and a voltage regulator 70 maintains the alternator output voltage at a rated level. When the Zener voltage is exceeded by the load signal, the impedance of the transistor 50 increases, and the impedance of the sensing circuit of the regulator 70 is increased. As a result, the regulated voltage level is reduced by controlling the energization of the alternator field winding 72. By adjusting a potentiometer 17, a constant power or other desired characteristic can be produced above the level at which voltage reduction is begun. This level is determined by the setting of a potentiometer 38. Voltage reduction can be prevented altogether by closure of a switch 56 connected across the transistor 50.
Patent GB-1173548-A (GB)
Title: A Sporting Target Rifle.
Inventor: SEMENOVYKH IVAN EFIMOVICH
IPC: F41C23/06
Filed: 1968-03-28
Abstract: 1,173,548. A sporting target rifle. IZHEVSKY MASHINOSTROITELNY ZAVOD. 28 March, 1968, No. 14866/68. Heading F3C. A sporting target rifle comprises a barrel 1 secured to a cartridge receiving means 2 and an elongated portion 6 mounted with clearance in a butt 3 and connected at its ends to the cartridge receiving means 2 and a shoulder piece 4. In the construction shown a forearm 5 in screwed to a bracket 10 of the cartridge receiving means. The shoulder piece 4 is connected to the elongated portion through a flange and split holder assembly, the split holder being clamped about the recoil assembly by screws 17. The rifle is also provided with a rear sight 8 and a foresight 7.
Patent GB-560064-A (GB)
Title: Improvements relating to stoves for drying foundry moulds and cores, and for other analogous purposes
IPC: B22C9/14
Filed: 1942-10-23
Abstract: 560,064. Drying foundry moulds and cores. NEUSTADIER, D. Oct. 23, 1942, No. 14908. [Classes 34 (ii) and 64 (i)] [Also in Group XII] A stove for dry ing foundry moulds and cores or for other analagous purposes, comprises a chamber c for articles to be treated, a combus tion chamber b burning solid liquid or gaseous fuel situated adja cent one side of the chamber a and provided with one or more openings g for the passage of radiant heat from the combustion chamber b to the chamber a and a mixing-chamber f in which gases from the combustion chamber are mixed with air or with gases returned from the chamber a before being supplied to the chamber a. A fan m draws gases from the chamber a through openings such as j and flues k and delivers them through an inlet to the mixing-chamberf where they induce gases from the combustion chamber and deliver them through .opening i to the chamber a. The fan may supply fresh air through the inlet h.
Patent GB-675206-A (GB)
Title: Improvements in or relating to manifolding apparatus
Inventor: GRIFFITHS WILLIAM HAROLD
IPC: B41L3/02
Filed: 1949-06-03
Abstract: 675,206. Manifolding apparatus. MANIFOLDIA, Ltd. June 5, 1950 [June 3, 1949], No. 14911/49. Classes 16 and 146 (i). In apparatus particularly for copying entries made in vertical columns on one form 32 on to an underneath form 31 by means of an intermediate transfer layer and wherein a bar 11 mounted on a base 10 carries two independent clamping-devices each adapted to engage an edge of one of the forms, and the base has means for locating the lower form in a fixed position, the bar 11 is adjustable transversely of its length relatively to the lower-sheet locating means so that the position of the upper sheet can be adjusted to bring the vertical columns on both sheets into exact alignment. The clamping-devices consist of two longitudinally - extending sets of pins 16, 17 attached to bars 14, 15 respectively pressed downwardly by springs 18 and mounted within the bar 11. Secured centrally to each bar 14 or 15 is a vertical arm 19 attached to one end of a lever 20 or 21 pivoted at 22 whereby either or both sets of pins may be raised. Two spaced threaded studs 26 fixed to the bar 11 slide within sleeves 27 mounted on plates 29 fixed to the base 10; the edges 30 of the plates 29 serve to locate the lower form 31 on the base 10. Knurled nuts 28 mounted in slots in the sleeves 27 engage the studs 26 and by their rotation effect adjustment of the bar 11 relatively to the edges 30. A single centrally-situated adjustment 26, 30 may be employed. In use, both clamping devices are released and the form 31 placed in position. The pins 17 are then lowered and the form 31 located against those pins. If the columns on the two forms do not coincide, the nuts 28 are turned to adjust the bar 11 until the columns are in alignment, whereupon the pins 16 are lowered. During adjustment of the bar 11, the sheet 31 remains stationary due to friction between it and the base 10. To obviate handling of the carbon sheets, a clamping-device for such sheets is provided on the opposite side of the bar 11 to the pins 16, 17. It comprises a spring-loaded pivoted member 35 operated by a thumb-piece 36 and having rollers 37 for engaging the sheets.
Patent GB-1339868-A (GB)
Title: Vehicle brake actuating system
IPC: F16D65/28
Filed: 1972-03-30
Abstract: 1339868 Brake actuators BENDIX CORP 30 March 1972 [16 April 1971] 14939/72 Heading F2F A vehicle brake actuating system includes a tandem spring and service brake actuator 10 in which the service brake actuator portion 14 is provided with a fluid pressure-receiving chamber 18 having a brake-applying diaphragm 22 therein, and the spring brake fluid actuator portion 16 is divided into a fluid pressure control cavity 36 and a spring cavity 40 by a piston 34 having a shaft 44 connected thereto and arranged to actuate the diaphragm to apply the brake and a spring 42 within the cavity 40 for operating the piston under predetermined operating conditions, a breathing valve 65, within the actuator 10, providing for opening communication between the chamber 18 and the cavity 40 during spring operation of the piston; the valve includes a valve element actuated by movement of the piston during spring operation thereof for closing the communication after the brake has been spring-applied. As shown, during spring operation of the actuator 16 the piston and rod 44, moves to the right, as seen in the Figure, and during such movement the valve plate 66 and valve element 68 move away from the seat 70 whereby the end 46 of the rod remains separated from the element 68 due to action of a conical dished spring 82, and the spring chamber 40 is connected with the chamber 18 by way of the port 60, annular passage 56, cavity 58 and ports 86; clean air is conducted from the vehicle brake system at atmospheric pressure to the chamber 40 to prevent vacuum being formed therein. The valve 65 also functions to close communication between the chambers 18, 40 after the brake has been spring- applied. In the event that the chamber 18 is charged by operation of the usual brake valve after the brake has been spring-applied, service brake pressure is prevented from entering the cavity 40 and acting on the piston 34; in this case the spring 82 is compressed to allow the end 46 of the rod 44 to sealingly contact the valve element 68. As seen in Fig. 4, a valve 88, connected to a brake valve, is movable to a first position to supply fluid pressure to the chamber 18 and a second valve 90 is movable to supply fluid pressure to the control cavity 36 to move the piston 34 in a direction to compress the spring 42 within the cavity 40, the valve 90 being movable to exhaust the cavity 36 to allow spring operation of the piston and brake applying element; the valves are interconnected to supply fluid pressure to the cavity 36 when the valve 88 is moved to the first position thereof and the valve 90 is moved to the said second position.
Patent GB-816457-A (GB)
Title: Device for the electrolytic protection of a ship's metal skin against corrosion
IPC: C23F13/00
Filed: 1957-05-10
Abstract: 816,457. Preventing corrosion. KONINKLIJKE ROTTERDAMSCHE LLOYD N.V. May 10, 1957 [June 12, 1956], No. 14992/57. Class 123(1) Corrosion of a ship's hull 1, the rudder post 2, the rudder 3 and propellor 4 is prevented by trailing a wire or a metallic tape or ribbon 6 astern of the vessel, the wire being connected to the positive pole of a d.c. generator 11 whose negative pole is connected to the hull by a conductor 15. The connection between the propellor shaft and the hull is made by brushes- 16 engaging slip rings on the shaft. The wire 6 which is carried on a winch 5 from which it is unwound as the submerged portion is consumed, is of soft metal such as aluminium or aluminium alloy and has a low breaking strength so that no damage will be caused if it should foul the propellor.
Patent GB-126014-A (GB)
Title: Improvements relating to the Heating of Boiler Feed Water and its Treatment with a View to Preventing Corrosion in the Boilers.
IPC: F22D3/00
Filed: 1916-10-24
Abstract: 126,014. Weir, G. & J., and Weir, W. Oct. 24, 1916. Feed-water, supplying and controlling. - Relates to apparatus for condensing steam and heating boiler feed-water of the kind described in Specification 125,149, and comprising a condenser a, condensate pump c, steam-jet air ejector g, surface feedheater m, feed-tank t and a feed-pump r, with or without a main surface feed-heater q. The invention consists in (1) using a combined feed-heater m and condenser n, such as described in Specification 15884/05, the residual air being discharged to the atmosphere through a pipe p, and the condensate being led to the feed-tank t through a pipe o; (2) providing a reserve feed-tank 12 to which water overflows from the feed-tank t through a pipe 11, and which communicates by a pipe 16 with the pipe u returning water to the condenser, a three-way cock 13 being fitted at the junction of these pipes in such a manner that under the control of a float in the feed-tank t it allows of the withdrawal of water from either of the tanks t, 12 upon the opening of the automatic valve w; (3) providing a filter 5 through which the condensate derived from the exhaust steam used in the feed-heater q is discharged into the feed-tank t; and (4) providing a pipe 8 returning water to the condenser a from a point on the feed-pipe f between the heater q and the feed-pump r.
Patent GB-150842-A (GB)
Abstract: 150,842. Meaten, F. F. June 19, 1919. Instruments with sonorous bars &c.-Apparatus for damping the sound in glockenspiels &c. consists of a spring-held damper frame A slidably mounted over the sound-producing bars H in end uprights C having inclined slots, so that the frame is moved forwards and downwards by actuating the button G, lever E and cord or wire E<2>, so as to lower the frame on to the bars. The frame A carries on its underside strips of thick felt, rubber, &c. The springs or elastic bands F return the frame to its position of rest above the bars.
Patent GB-593830-A (GB)
Title: Improvements in or relating to hand trucks and wheelbarrows
IPC: B62B5/04
Filed: 1945-06-14
Abstract: 593,830. Locking vehicle wheels. TURNER, J. June 14, 1945, No. 15094. [Class 103 (i)] The wheels of a truck or wheelbarrow are prevented from rotation when tipping the load by means of a ratchet wheel and gravityactuated pawl. As shown, the wheel 1 is provided with ratchet teeth 2 engaged by a pawl 3 provided with a counterweight 6 such that when the load is tipped the pawl engages with the ratchet teeth. The pawl may be disengaged by a hand lever 7 connected by a link 9 to a lever 10 hinged to the side rail 4 of the truck, the lever being connected to a cranked shait 13, pivoted to the side rails and engaging the pawl 3.
Patent GB-641860-A (GB)
Title: Improvements in or relating to coupling coils for video amplifier circuits
IPC: H03F1/50
Filed: 1948-06-04
Abstract: 641,860. Inductances. PLESSEY CO., Ltd. June 4, 1948, No. 15136. Convention date, June 6, 1947. [Class 38 (ii)] [Also in Group XL (c)] An inter-valve coupling for a video amplifier comprises an insulating former 10 on which are wound two coils 11 and 12, one end of each coil being led to a common terminal 14 and the remaining ends of the coils bearing terminals 15, and coil 12 is wound from wire of appreciable resistance, which thus reduces its " Q " value. Coil 11 is connected between the anode of one valve of the amplifier and a grid of a succeeding valve and forms a series peaking coil. The terminal 15 of coil 12 is connected to a hightension source and coil 12 forms a shunt peaking coil.
Patent GB-957964-A (GB)
Title: Device for automatically feeding food for caged birds and poultry
IPC: A01K39/012
Filed: 1962-04-19
Abstract: 957,964. Animal feeding appliances. U. BAENSCH, [trading as TROPENHAUS DR. RER NAT. BAENSCH]. April 19, 1962 [April 19, 1961], No. 15175/62. Heading A1M. A device for automatically feeding food to caged birds and poultry comprises supporting means 4 of transparent material attached to the cage by hooks 7, a package 2 containing the food and inserted into the supporting means to form a detachable unit therewith, and an open trough 8 adapted to project into the cage. The supporting means 4 comprises side walls 5, 5<SP>1</SP> and end walls, 6, 6<SP>1</SP>, the wall 6 projecting beyond the side walls and being provided with a perch 10 and an aperture 9 at which the trough 8 is secured. The package 2 has incisions 2<SP>1</SP> at its lower end along which a corner of the package is torn off so that food drops into trough 8. A window is provided in the package so that the food level therein may be observed. In a further embodiment the supporting means comprises a rectangular frame and the feeding trough is inserted into the opening formed by tearing off the corner of the package.
Patent GB-1507563-A (GB)
Title: Catalytic composition suitable for the polymerization of alpha-olefins its use and its production
IPC: C08F4/00
Filed: 1975-04-14
Abstract: 1507563 Olefin polymerization catalyst SNAMPROGETTI SpA 14 April 1975 [17 April 1974 10 Jan 1975] 15302/75 Heading C3P A catalyst for the polymerization of alpha-olefins comprises (A) a hydrocarbyl halide, hydrocarbide hydride halide, hydrocarbyl hydride, or hydride of a Group I to III metal, and (B) a combination or association of TiCl3 and the chloride of another transition metal dispersed on, (C) a carrier of a alkali metal or alkaline earth metal halide. In the examples, the carriers (C) were NaCl, KCl and MgCl2, while the component (B) was generated by the in situ reduction of TiCl4 with, variously, Mn(CO)10 or Mn(CO)5Cl. Component (A) was Al(iC4Hg)3. Ethylene was polymerized using the catalyst in the presence of H2.
Patent GB-270512-A (GB)
Title: Improvements in kiln stilts
IPC: F27D5/00
Filed: 1926-06-18
Abstract: 270,512. Arrowsmith, H. T., and Arrowsmith & Sons, Ltd., T. June 18, 1926. Saggers.-To prevent twisting of kiln stilts during the stacking process, the type of stilt comprising a Y-shaped frame provided with an edgeengaging projection b, an upper face-engaging projection d and underside - engaging projections e, is provided with additional side arms f approximately midway of the length, which carry additional projections g giving a 3-point support on the upper surface of the article prior to the tilting movement caused by the weight of the plate above.
Patent GB-351193-A (GB)
Title: Improvements relating to the construction of ships' hulls
IPC: B63B3/00
Filed: 1930-05-19
Abstract: 351,193. Ship construction. LAMBERT, W. and GERMAN, H. H., 315, St. Sacrament Street, Montreal, Canada. May 19,1930, No. 15324. [Class 113 (ii).] The hull construction comprises a continuous keelson 59 and side stringer 56, the side framing comprising web frames 40 with intermediate ordinary frames 40. Below the main stringer 56, the framing is also carried inwards and downwards these portions being plated over to form inclined sides of the hold 6 at the same time form triangular outer compartments which provide a double skin below the bottom. The transverse bulkhead may be continued across these longitudinal compartments and manholes are provided to facilitate access. Reference has been directed by the Comptroller to Specifications 10088/97 and 17224/05, [both in Class 113, Ships &c. Div. I.].
Patent GB-593349-A (GB)
Title: Improvements in gun turrets
IPC: F41A27/18
Filed: 1945-06-16
Abstract: 593,349. Gun turrets; sights. RICE, E. A. B., ROSE, A. G., NICHOLLS; K. H., CURTIS, S., and ROSE BROS. (GAINSBOROUGH), Ltd. June 16, 1945, No. 15371. [Classes 92 (i) and 92 (ii)] Relates to gun turrets in which, as in Specification 577,904, the movements of a. gun or guns 11 in elevation and of the turret platform 13 in training are effected by power means under the control of a sighting arm 33 which can be moved about an axis coincident with that of the turret and about an elevating axis parallel with that of the gun or guns. According to the invention, the sight 51 is mounted on a sight-carrying arm 52 which is mounted independently of the arm 33 for movement with the turret in training and which is connected to the gun or guns for parallel motion therewith in elevation. In the construction shown, the arm 33 is connected to a valve 19 for the elevating motor of the guns through linkwork, and is pivoted at 136 to an overhead member 137 which controls the valve 41 of the training motor 43 substantially as described in Specification 577,904, Thus, movement of the arm in elevation about axis 136 and of member 137 about a vertical axis coincident with the axis of platform 13, causes the guns or turret to move in the required direction. The arm 33 does not, however, carry the sight 51 as in the earlier Specification, the sight being on the arm 52 whichpivots on an axis coincident with axis 136 and which carries arms 56 connected by links 57 to each of the carriers 16 of the guns. By this means the sight moves in unison with the guns. Specification 577,922, [Group XXIX], also is referred to.