baber/WOPTO huggingface dataset:
Patent GB-706368-A (GB)
Title: Improvements in or relating to thermistor circuits for thermometry
Inventor: SHEPARD STANLEY CARDEN
IPC: G01K7/24
Filed: 1951-12-14
Abstract: 706,368. Temperature measuring bridges. STANDARD TELEPHONES & CABLES, Ltd. Dec. 14, 1951. No. 29347/51. Class 37 [Also in Group XXXVIII] A thermistor bridge calibrated against a first thermistor is so designed and arranged as to accommodate replacement thermistors of the same type without recalibration. As shown a first thermistor r15 is permanently connected with its own shunt resistance R to form one arm which is permanently connected with a resistance R1 forming an adjacent arm and each of the stock or replacement thermistors is similarly associated with its own characteristic resistances R, R1 so that to substitute another thermistor for r15 an entire half or branch of the bridge is replaced as at 7-9. The value of R for each thermistor is selected in accordance with a formula given in the specification so that over a required temperature range e.g. 0-40‹C. the resistance value P of the parallel combination varies linearly with temperature. The value of R1 for each thermistor is made equal to the value P at the mean temperature of the range covered. In the permanent half of the bridge the arm 1-2 comprising the temperature calibrated rheostat R3 also comprises a fixed resistance R2 and with R3 at the setting corresponding to the mean temperature of the range covered the fixed resistance R4 in the adjacent arm 2-3 equals R2 + R3 and the ratios R2 + R3/R4 and P/R1 both equal unity and the bridge is balanced for the first thermistor r15 and any replacement thermistor. The maximum value of R3 is made equal to or near the value p which corresponds to the total amount of resistance change of the parallel combination R + r15 over the chosen temperature range and R2 has a value equal to or k times the minimum resistance P of R + r15 over the chosen temperature range where k is the ratio of the maximum value of the R3 rheostat actually used to the value p. The value k differs normally from unity since the R3 rheostat actually used is normally a commercial variable resistor having an upper value' as near as possible to the value p. The ratio of P to R1 for each thermistor is substantially a constant at each point of the temperature range covered so that e.g. a 0-40‹C. scale on R3 against the first thermistor unit or bridgehalf r15 + R + R1 also serves for any replacement combination. ' Each thermistor unit or bridge-half may be mounted on a conventional base for a thermionic valve with three pins connected to the resistances R1, R2 as at 7, 8, 9. The main apparatus comprises the permanent bridge-half and galvanometer ' 6 connected to corresponding sockets in a valve holder from which may thus be readily detached any thermistor unit or bridge-half to be replaced. Specification 558,299 is referred to.
Patent GB-206688-A (GB)
Title: Improvements in and connected with cigar cutters and the like
IPC: A24F13/26
Filed: 1922-10-27
Abstract: 206,688. Watts, W. W. Oct. 27, 1922. Cigar cutters and piercers.-A tubular cutter f is attached to or formed integral with a screw e having a central cylindrical bore and engaging a nut b formed integral with a cup a to receive the end of the cigar. An ejecting-rod i, of square or other section, passes through a corresponding hole in a collar g attached to the upper end of the screw e, and is attached at its upper end to a milled head h formed with lugs k which are bent over a flange d at the upper end of a casing c attached to the nut b. On rotation of the head h, the nut e is rotated and the cutter f screwed downwards, its motion being limited by the collar g. On reverse rotation of the head h, the cutter f is withdrawn and the cuttings are ejected by the rod i.
Patent GB-579561-A (GB)
Title: Improvements relating to the distillation of solid carbonaceous substances
IPC: C10B7/14
Filed: 1939-11-03
Abstract: 579,561. Carbonizing apparatus ; retort furnaces. LOW TEMPERATURE CARBONISATION, Ltd., and CARTWRIGHT, J. Nov. 3, 1939, Nos. 29359/39 and 17174/40. [Classes 51 (ii), 55 (i) and 55 (ii)] Apparatus for the distillation of coal and the like comprises tubes or retorts which are caused to travel through a heating chamber but distillates being withdrawn through outlet pipes leading into an hydraulic main running parallel with the path of the retorts, each outlet pipe dipping into the liquor below a wall extending downwardly from the main. The gases may be taken off from the top of the retort or, as shown in Fig. 3, from the bottom, and pass through an outlet l<3> of inverted U-shape below a depending wall c<2> into the gas space of a main c. The retorts are raised on leaving the heating chamber so that their outlet pipes are clear of the hydraulic main. The retorts a may be provided in pairs, connected by upper and lower fittings k, l, their upper ends being sealed by closure plates a<4>, surrounded by sand luting k<1>. Their lower ends are closed by a perforated plate m pivotally mounted at l<1> and secured by a lug m<1> on a spindle m<2>. The retorts are supported from a rail i<2> by wheeled carriers n and suspension rods j, and are moved through the heating chamber by an endless chain o, the slot h<4> at the upper end being closed by flanged plates j<2> which dip into sand seals h<5> on each side of the slot. The retorts are heated by passage through open box-bricks g<2> which separate the heating chamber from the combustion chambers. In Fig. 6, the reduced upper parts a<6> are each surrounded by an outer jacket a<7> forming an annular space for sand luting after a cap a<4> has been fixed. An inverted cap a<9> closes the lower end, and a perforated cast iron weight may create pressure on the charge. Figs. 9, 10 and 11 show a furnace for heating the retorts comprising a narrow combustion chamber h<14> with burners at the lower end, and connected by an opening h<16>, with a heating flue h<15>, an interconnecting passage h<17> permitting of re-circulation of the combustion gases. The hot gases pass out by passage h<18> and vertical flue h<19> to a number of tubular members p constituting a radiator which extends along the interior of the heating chamber g within a recess h<21>, the hot gases being exhausted through a flue h<22>. Fig. 11 shows a number of heating chambers g in one setting, the retorts passing on an endless track to a discharge station q, where they are emptied and passed to a charging station r before being returned to the heating chambers g.
Patent GB-738134-A (GB)
Title: Packing sleeve for rock drills
IPC: E21B21/00
Filed: 1953-10-23
Abstract: 738,134. Percussive drills. SANDVIKENS JERNVERKS AKTIEBOLAG. Oct. 23, 1953 [Oct. 23, 1952], No. 29393/53. Class 124. A packing sleeve for drill steels having a clearing channel is formed with a resilient reinforcement and is held in position within the channel by the outward pressure of the reinforcement. As shown, a shank 11 of a drill steel has a clearing channel 15 into the rear end of which is inserted a packing 14 comprising a sleeve of elastic material, e.g. latex rubber; and a reinforcement 16 which may be a spiral spring, flat spring, or slotted metallic ring, or may be formed of a harder elastic material than the remainder of the packing. The reinforcement may be the same length as or longer than the sleeve. In a modification, Fig. 5, ribs 19 at the ends of the sleeve engage the sides of the cbannel and form a pocket between the sleeve and the channel, the suction effect produced preventing movement of the sleeve. The internal bore of the sleeve may have a part of smaller diameter to ensure a good fit between the sleeve and the tube 12.
Patent GB-1269810-A (GB)
Title: Improvements in the gas-flushing of metal melts
Inventor: JOSEFSSON ERIK ANDERS AKE
IPC: F27D27/00
Filed: 1969-06-10
Abstract: 1,269,810. Ladles. STORAKOPPARBERGS BERGSLAGS A.B. 10 June, 1969 [13 June, 1968], No. 29428/69. Heading F4B. [Also in Division C7] A shaking ladle for treatment of molten metal with gas comprises a ladle body 1 tiltably mounted in a frame 2 which is itself supported on three crank-shafts or eccentric shafts 5, 6, 7, the last-named being driven by a motor 8 while the other two are freely rotatable. In the bottom of the ladle there is a gas-distributing insert 13 consisting of two elements 14, 15 providing a slit-like passage through which gas is supplied through line 18. The elements are surrounded by metallic ferrule 17 to prevent gas leakage.
Patent GB-262102-A (GB)
Title: Improvements in or relating to combined buffer and draw gear for railway vehicles
IPC: B61G9/12
Filed: 1926-11-22
Abstract: 262,102. Knorr Bremse Akt.-Ges. Nov. 27, 1925, [Convention date]. Combined buffer and drawgear.-In order to convert a railway vehicle having side buffers to one having central buffers without strengthening the underframe, a tubular member i is arranged longitudinally in the centre of the vehicle with a support h at each end adapted to engage the rear spring plate e of the draw and buffer springs d, so that buffing shocks are transmitted to both springs and the central longitudinal girders f are consequently subjected to tensional stresses only. Each end h is bifurcated and supports the rear spring plate e, and the front spring plate c abuts a stop g. In buffing, one spring d is compressed against the end of the tubular member i which moves longitudinally and compresses the other spring d against the end stops g so that the longitudinal members f are placed in tension.
Patent GB-845993-A (GB)
Title: Preparation of anhydrous solutions of acrylonitrile vinylpyridine copolymers
Inventor: HAM GEORGE EDLOE
IPC: C08J3/09
Filed: 1956-09-27
Abstract: Substantially anhydrous organic solvent solutions of acrylonitrile-vinyl pyridine copolymers are prepared by mixing aqueous dispersions of such copolymers with a water miscible organic solvent for the copolymers and distilling off substantially all the water from the mixture.  "Vinyl pyridine" includes methyl and ethyl derivatives such as 5-ethyl-and 5-methyl-2-vinyl pyridine and the solvent may be dimethylformamide, dimethylacetamide, gamma-butyrolactone, ethylene carbonate, acetonitrile, succinonitrile, dimethyl sulphane, dimethyl sulphoxide, ethylene cyanate or trisdimethylaminophosphine oxide.  A spinning solution may be prepared by mixing a solution, obtained by the above method, of 1 to 50% by weight of a copolymer obtained from at least 30% by weight of a vinyl pyridine and not more than 70% of acrylanitrile, with a solution, in the same solvent, of 50 to 99% by weight of a copolymer obtained from at least 80% of acrylonitrile and not more than 20% of another mono-olefinic monomer/polymerisable therewith, such as vinyl acetate, vinyl chloride, an acrylate or methacrylate, styrene, methyl vinyl ketone or isobutylene.
Patent GB-373047-A (GB)
Title: Improvements in and relating to protective apparatus for electric circuits
IPC: H02H7/16
Filed: 1931-10-26
Abstract: 373,047. Protective cut-out arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. -(Assignees of Belt, T. A. E.; 144, Waverly Place, Schenectady, New York, U.S.A.) Oct. 26, 1931, No. 29671. Convention date, Oct. 25, 1930. [Class 38 (v).] A circulating-current arrangement 12, 13 is used in parallel conductors containing impedances, for example and as shown, condensers 7 used for power-factor improvement across a system which may be fed from either machine 3, 4. On a predetermined degree of unbalance occurring, due to a breakdown of dielectric or other cause, the contactor 8 is opened by the coil 11 to cut out the condensers. If the condenser circuits are connected in series with the mains, a contactor is arranged to shortcircuit them on a fault occurring. The condensers are preferably all of equal capacity and a wattmetric indicator 18 and scale 19 are operated by a further current-unbalance coil 15 and a voltage coil 17, the reading depending on the magnitude and direction of out-of-balance current in 15, so that it can be easily seen how many condensers have broken down and in which circuit. In the limiting position, contacts 20, 21 are engaged to close the circuit to indicator lamps 22, 23 and/or alarms. Specification 286,693, [Class 38 (v), Electric switches &c.], is referred to.
Patent GB-1188028-A (GB)
Title: A Method of Electroslag Remelting of Consumable Electrodes and Apparatus for Effecting Same.
Inventor: PATON BORIS EVGENIEVICH
IPC: C22B9/18
Filed: 1967-06-28
Abstract: 1,188,028. Casting processes. INSTITUT ELEKTROSVARKI IMENI E.O. PATONA. 28 June, 1967, No. 29748/67. Heading B3F. [Also in Divisions H2 and H5] In order to produce smaller drops of molten metal dropping from the consumable electrode 1 of an electroslag refining apparatus 2, short pulses of electric current are superimposed on the working current to hasten detachment of the drops. A pick-up 7 detects the current change as a drop forms and through a time relay 9 actuates a control 6 of an ignition contactor 5 for producing the pulses (see Division H2).
Patent GB-606694-A (GB)
Title: Steam generator for steam pressing irons
IPC: D06F75/02
Filed: 1945-11-09
Abstract: 606,694. Electric immersion heaters. COOPER, H. P. Nov. 9, 1945, No. 29900. Convention date, March 8. [Class 39(iii)] [Also in Group XIII] Pressing irons are supplied with dry steam from a boiler which is mounted on a tubular column 11 and comprises a lower steam generating drum or chamber 17 fitted with an electric heater 37, an upper steam collecting drum 25 having a steam outlet valve 34, and an intermediate feedwater and condensate drum 20, the drums being connected to one another by tubular junction nipples 22, 23, 26, 27. A pipe 28 is threaded into the nipple 23 to project through the nipple 27 to a point a slight distance above the axis of the drum 25 and on the side of a downwardly-extending baffle 30 remote from the steam outlet 34, the arrangement being such that steam generated in the drum 17 will flow through the pipe 28 to the drum 25 where any suspended moisture is caused to fall to the bottom thereof by the said baffle 30 and pass through the nipple 26 to the feedwater drum 20. The heater 37 may comprise a pair of internal elements of such form that the heat produced thereby is more intense at their free ends 38 immediately below the pipe 28, and it is preferably controlled by a pressure-operated switch 61 mounted on the steam drum 25.
Patent GB-1471124-A (GB)
Title: Machines for loading electric components into a carrier strip
IPC: H01G13/00
Filed: 1975-07-17
Abstract: 1471124 Transporting components on a carrier strip ILLINOIS TOOL WORKS Inc 17 July 1975 [19 Julyl974] 29972/75 Headings B8A and B8C Small components 14 (Fig. 2) (e.g. ceramic chip capacitors) are handled by being pressed into apertures 12 in a carrier strip. The latter is drawn off a reel 22 (Fig. 1), and fed through a guide 24 past devices 38 and 40 (Fig. 6) which punch the apertures 12. A gripper arrangement 42, 44, grips the strips and moves upwardly to feed it past a component feed station at the beginning of a second guide 26. The strip feed action only occurs if a preceding component is sensed by a probe 60 (Fig. 7). The probe position may be adjusted by a micrometer 70. The strip 10 with the positioned components is wound on a reel 32 and is covered by a further strip 36 from a reel 34. When the components have been transported to their point of use, the reel 32 is put into a mechanism (Fig. 10, not shown) and the components are punched out as the reel is unwound.
Patent GB-484572-A (GB)
Title: Improvements in or relating to sewing machines
IPC: D05B69/12
Filed: 1936-11-04
Abstract: 484,572. Sewing-machines. ROBERT, R. C. Nov. 4, 1936, No. 30068. [Class 112] [Also in Group XXIV] A pivoted key 19, Fig. 1, housed in a groove in the shaft 9 of an electric motor is urged outwardly by a spring 20 so as normally to engage a notch in the hub of a belt pulley 16 driving a sewing-machine, whereby the pulley is normally driven by the shaft. When, however, an accessory part, such as a bobbin, is pushed on to the end of the shaft, the key 19 engages a groove in the accessory part, so that the latter is driven, but cannot engage the notch in the pulley, so that the latter is freed. For this purpose, the free end of the key is made of reduced depth, or the diameter of that part of the shaft within the pulley is greater than that of the part within the accessory. The accessory part may be a speed-reduction gear set comprising a casing 23, Fig. 5, housing meshing gears 21 and 22, the gear 21 being adapted to be pushed on the shaft 9 while the gear 22 is adapted to engage on a fixed pin 29 and is integral with a gear 27 adapted to mesh with a gear 17 integral with the pulley 16. The gear set is adapted to be retained in position by a spring detent carried by the gear 22 and co-operating with a groove 30 on the pin 19.
Patent GB-1441376-A (GB)
Title: Press having opposed rams and control means for the rams
IPC: B30B15/18
Filed: 1974-07-08
Abstract: 1441376 Presses; compression moulding WEAN UNITED Inc 8 July 1974 [30 Aug 1973] 30157/74 Headings B5A and B5F A press with opposed rams 30, 40 which advance towards each other simultaneously has a control for the rams to stop one ram if it starts to lead the other ram, the control comprising at least two position detectors for each ram. The separation of the detectors is adjustable. In one embodiment a set of limit switches LS-1A to 6A and LS-1B to 6B, Fig. 2, are associated with the respective rams. The separation of the switches is adjustable and the separation of adjacent parts decreases towards the end of the working strike. The switches are of the roller-arm cam type. Initially switches 2A, 2B, 4A, 4A, 6A, 6B are open, Fig. 3, and the other switches closed. The rams continue to advance unless one ram fails to close one switch of a limit switch pair before the other ram has opened the other switch of the pair in which case the leading ram is stopped until the lagging ram catches up. The press may be used to compact loose material in a container, a number of which containers 44, 46 are mounted on a turntable 42.
Patent GB-1107338-A (GB)
Title: Stabilized polyurethane compositions
IPC: C08J9/00
Filed: 1965-07-16
Abstract: Polyurethane foams are prepared by reacting a polyether polyol with an organic polyisocyanate in the presence of a tertiary amine and/or other catalysts, a stabilizing amount of phenothiazine, and water as the blowing agent. Suitable polyether polyols are linear polyoxyalkylene polyols, reaction products of alkylene oxides with e.g. glycerol, 1,1,1-trimethyolpropane, 1,2,6 - hexanetriol, pentaerythritol, sorbitol, glycosides and sucrose, reaction products of alkylene oxides with mono-nuclear polyhydroxy benzenes, or polynuclear polyhydroxy compounds or with di-, tri- and tetraphenyol compounds or reaction products of phenolic resins with alkylene oxides.  Saturated aliphatic polyols may also be blended with the polyethers.  The tertiary amines utilized may be reactive or unreactive with isocyanate groups. The preferred polyisocyanates are a mixture of 2,4- and 2,6-tolylene diisocyanates but many more suitable diisocyanates and triisocyanates are mentioned.  Other catalysts are organotin compounds such as stannous acylates or alkoxides, dialkyl tin salts of carboxylic acids, and alkyl tin hydroxides, oxide or chlorides. Emulsifiers such as siloxane oxyalkylene copolymers may be added to the reaction mixture. The preparation of the foams may be by the one-shot, semiprepolymer or prepolymer techniques.
Patent GB-1477891-A (GB)
Title: Automatic pistol
IPC: F41A13/00
Filed: 1974-07-08
Abstract: 1477891 Pistol J H Z SAFIE 8 July 1974 [24 Oct 1973] 30222/74 Heading F3C An automatic pistol comprises a safety latch 16, a release lever 18 which is connected to the safety latch 16, is carried by a handgrip of the pistol and is engageable with a disc 15 integral with a hammer 14, a main latch 7 which is lockable by a safety ratchet 21 and releasable by a control lever 11, a strut member 5 which is connected to a trigger 23 and co-operates with the control lever 11, a breech mechanism 3, an extractor 8 and heat exchanging means for cooling the barrel. The control lever 11 is pivotally mounted on the breech mechanism 3 and has a radiused end engageable with the strut member 5, the latter being positioned by a member 4 so as to be engageable or not engageable with the control lever 11 according to whether the pistol is intended to provide burst-firing of cartridges or not. In use the latch 16 is moved from a safety position by pressing the lever 18, the trigger 23 is actuated causing the strut member 5 to contact end 11<SP>1</SP> of the lever 11, the other end of which disengages the main latch 7 to release the hammer 14. The latter is driven by the disc 15, which is urged by a spring 19, and the hammer hits a percussion pin 12 to fire a cartridge 6 in pistol barrel 1. Rearward movement of the breech mechanism 3 extracts the cartridge case by the extractor 8, re-sets the hammer 14, re-loads the barrel with a cartridge and, having air-intake apertures 2, helps to cool the barrel. Cooling of the barrel 1 is also facilitated by fins mounted thereon. To fire another cartridge the trigger is released so that the strut member 5 can return and then be positioned by a spring 22. To effect burst-firing of cartridges, the member 4 is rotated 90 degrees in the anticlockwise direction so as to move the strut member 5 to the position shown in Fig. 3 and to retain said strut member in this position. This ensures that the lever 11 will engage the strut member 5 at each stroke of the breech mechanism. The lever 11 repeatedly releases the safety ratchet 21 and actuates the main latch 7 so as to free the disc 15 hammer 14 and effect burst-firing.
Patent GB-299459-A (GB)
Title: Improvements in and relating to electric meters
IPC: G01R11/56
Filed: 1928-10-22
Abstract: 299,459. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Oct. 27, 1927. [Convention date]. Void [Published under Sect. 91 of the Acts]. Special quantities, registering.-A meter for registering energy at low tariff is provided with fertomagnetic laminae b inserted in the armature a to hold it stationary until the energy consumed is sufficient to produce a torque which overcomes the attraction between the parts c, b and causes the meter to register.
Patent GB-280597-A (GB)
Title: An improved method of and apparatus for making pencils
IPC: B43K19/16
Filed: 1927-11-14
Abstract: 280,597. Daniels, C. E. Nov. 13, 1926, [convention date]. Extrusion machines. - Pencils are formed by extruding a pulp mass through a shaping-nozzle, applying heat to the mass as it emerges to dry and harden it, and utilizing the movement of the extruded mass to insert a core of lead or crayon. As shown, a horizontal cylinder 5, supplied with a pulp mass 13 through a hopper 7, is furnished with a nozzle 8 through which the mass is extruded by a plunger 9 actuated by a screw 10 and handwheel 12. Lead or cores 17 are inserted into a tube 15 secured to the nozzle by webs 16 and supported within a bore 14 of the screw 10, the forward end of the core engaging a socket 24 in a head 21 carried by a member 20 furnished with a pair of sleeves 23 engaging guides 18. Adjacent to the nozzle is a heater comprising a cylindrical casing 25, having a lower perforated portion below which is housed a gas burner 27, and an inner concentric portion 29 perforated at 30. In operation, the head 21 is brought up to the nozzle and a cork 17 inserted through the tube 15 after which the screw 10 is operated to force the mass 13 through the nozzles where it becomes heated and hardened and forces back the head 21 together with the core 17.