baber/WOPTO huggingface dataset:
Patent GB-692010-A (GB)
Title: Improvements in receptacle tilting and unloading device
Inventor: WHITE FRANK JOHN
IPC: B65G65/00
Filed: 1951-10-26
Abstract: 692,010. Tipping apparatus. TOTE ENGINEERING, Inc. Oct. 26, 1951, No. 25127/51. Class 21 [Also in Groups II and XXX] An unloading device for receptacles comprises a tiltable hopper 8 and a support 15. The receptacle rests on a resilient pad 28 on the support and one side makes contact with a gasket 13 surrounding the open side of the hopper, an end roller 31 urges the receptacle into close contact and is assisted by an abutment on the forward edge of the receptacle which slides into a groove on the support. A vibrator 29 is provided on the support. The receptacle may be of the kind described in Specification 674,091. Legs 25 on the receptacle engage in apertures 24 on the hopper, the receptacle being centred by side rollers 32. The hopper has a curved bottom in which is mounted a discharge screw 53 in trunnion bearings 18. At the discharge end to prevent choking a single arm holding the bearing for the screw may be used or for abrasive material at the discharge end the screw is edged with hard wearing material which bears against the surface of the hopper. The hopper has an opening 52 through which the discharge door 27 of the receptacle can be opened. The hopper engages the ground on members 22 or can be raised on supports and tilted to discharge by a hydraulic ram engaging lug 35. As shown in Fig. 7 the receptacle is raised by chains 37 and the receptacle is supported by links 41, 42 which are locked in the extended position. More than one receptacle can be discharged at the same time and the screws each feeding the same or different quantities lead to another discharge screw conveyer.
Patent GB-681951-A (GB)
Title: Process for prestressing cement products
IPC: C04B28/02
Filed: 1950-10-17
Abstract: 681,951. Prestressed reinforced cement products. SOURWINE, J. A. Oct. 17, 1950, No. 25259/50. Class 20(iv) A prestressed metal reinforced cement unit is formed by moulding a methyl-benzene cementitious mix about metal reinforcements precoated with a material capable of being slowly dissolved in the methyl-benzene constituent of the mix, allowing the mix to harden, prestressing the reinforcement in tension and the hardened cement mass in compression, and fianlly securing the ends of the reinforcements to the hardened cement. Methylbenzene is defined as comprising toluol and xylol and diluents of either of these liquids with other suitable organic liquids, and the methyl-benzene soluble material comprises substances such as resinous, waxy, and other plastic materials which can be placed or moulded into the form of a thin coating over a metal rod and which are dissolved at least in part by the methyl-benzene present as a mixing liquid in the cement. The thin space left between the metal rods and the hardened cement inhibits the entrance of water. In one method the reinforcing wires &c. are fastened at one end to a bearing plate or the like on the end of the unit and at the other end pass through a second plate at the other end of the unit and are secured to a spaced third plate, tension being applied by means of jacks acting between the second and third plates and the jacks later replaced by chucks which are filled around with cement &c. Alternatively steel frames may be used as temporary stress blocks in place of the chucks and arranged outside the space to be filled in with cement and removed when the latter has hardened. In a further method the second and third bearing plates are dispersed with and the jack applied against the hardened unit. The wires may be initially tautened and anchored to remove sag. The reinforcements, which are preferably of uniform cross-section, may for example, be of steel, magnesium, alloys of magnesium, or alloys of magnesium and alumininum.
Patent GB-600166-A (GB)
Title: Improvements in or relating to gain-controlled electrical transmission systems
IPC: H03G3/22
Filed: 1945-09-28
Abstract: 600,166. Automatic gain control. SPERRY GYROSCOPE CO., Inc. Sept. 28, 1945, No. 25314. Convention date, Sept. 29, 1944. [Class 40 (v)] In a signal transmission system, an automatic gain control voltage is derived in such a way that its magnitude is dependent upon the frequency at which the signal level exceeds a predetermined level. The invention is shown in a gated pulse receiver comprising a frequency changer 12, I.F. stages 13, 24, detector 24<1>, wide band amplifier 26 and utilization circuit 31. A gating circuit 27 renders amplifier inoperative except for the short periods during which pulses may be received. The output from amplifier 26 in the form of negative pulses is fed to a triggered multivibrator 34, 35 arranged so that in the absence of a signal, valve 34 is conducting and valve 35 is cut off. Any of the negative pulses that have an amplitude greater than a predetermined threshold cause valve 34 to cut off and valve 35 to conduct. Thus, the potential of anode 37 of valve 35 varies between the fixed potential of H.T. source 40 when the valve is cut off, and a lower fixed potential when the valve is conducting. This varying potential is fed to an integrating network 58, 59 to produce a control potential, the value of which depends on the frequency with which the pulses from 26 exceed the predetermined amplitude threshold. The average voltage across condenser 59 is fed through a cathode follower 65 to provide an A.V.C. voltage which is applied to the screen grids of the I.F. stages 13 and 24.
Patent GB-794272-A (GB)
Title: Improvements in or relating to apparatus for coupling a tractor to a trailer vehicle
Inventor: GRANT KENNETH ALEXANDER
IPC: B62D53/08
Filed: 1955-09-03
Abstract: 794,272. Vehicle couplings. BROCKHOUSE & CO., Ltd., J. Aug. 30, 1956 [Sept. 3, 1955], No. 25360/55. Class 103(5) A tractor is provided with conventional ramps 12 for engagement with semi-trailer jockey wheels or rollers and towing forces are taken by catch plates 22 mounted on bars 18 rotatable about a longitudinal axis of the tractor. When coupling is taking place the trailer rollers depress links 13 thereby rotating the catch-plates 22 inboard via the pins 23 secured to the plates. When the rollers have passed over, the plates 21 engage the rear surfaces of the rollers to retain the trailer in coupled position. Uncoupling is effected from the driver's cab by link 32 which rotates the shaft 29 and lever 28 to pull on links 27 pivotally attached to crank members 20 on the bars 18.
Patent GB-384626-A (GB)
Title: Improvements in or relating to luminous electric discharge tubes
IPC: H05B41/06
Filed: 1932-09-13
Abstract: 384,626. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent- Treuhand-Ges. fur Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin.) Sept. 13, 1932, No. 25476. Convention date, Sept. 16, 1931. [Class 39 (i).] In the method of starting discharge lamps described in Specification 353,372 wherein the heated electrodes are connected in series in a common heating circuit, the connection is broken by means of the discharge current which flows through a heating winding to operate a thermal switch. The electrodes 2, 3, Fig. 1, are connected in series through a resistance 11 and a switch 16 which consists of a gas-filled glass envelope containing a bimetallic strip 17, contacts 18, 19 and a heating winding 15. In a modification, the heater 15, Fig. 2, is adapted to expand gases in a tube 21 to move a mercury column 22 to break the connection between contacts 23, 24 in the cathode-heating circuit. If high-frequency apparatus is used for starting, the high-frequency circuit may contain switch contacts situated below the contacts 18, 19, Fig. 1, or may contain the contact 23, Fig. 2, and an additional switch contact' situated below the contact 24 so that the operation of the thermal switch causes the high-frequency circuit to be interrupted after the series connection of the electrodes has been broken.
Patent GB-1311108-A (GB)
Title: Slotted core lifter apparatus
IPC: E21B25/12
Filed: 1970-05-27
Abstract: 1311108 Boring earth &c E J LONGYEAR CO 27 May 1970 [2 June 1969] 25494/70 Heading E1F In a core bit having an inner tube 17 carrying a core lifter case 18, the core lifter 19 comprises a split ring having slots 30, 31. (For Figure see next column)
Patent GB-728740-A (GB)
Title: Improvements in or relating to trigger circuits
IPC: H03K3/313
Filed: 1951-11-01
Abstract: 728,740. Multi-stable state circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 1, 1951 [Dec. 7, 1950], No. 25562/51. Class 40 (6). A two stable state trigger circuit comprises a crystal diode having a positive resistance value in one stable state and a negative resistance value in the other, and an electron discharge device in series with the diode, switching being effected by application of a pulse to a control electrode of the discharge device. In Fig. 1, a germanium or silicon semi-conductor block 13 having a base electrode 18 and whisker electrode 19 has a voltage/current characteristic as shown in Fig. 2 having portions of positive and of negative resistance. A voltage from source 10 is applied across diode 13 in series with resistance 14, and the position of the load line corresponding to resistance 14 in Fig. 2 shows that the arrangement has two positions of stability indicated at OFF and ON. When the circuit is in the small current, OFF condition, triggering is effected by applying a negative pulse from source 15 to the junction of the diode and the resistance, so that the circuit jumps to the high current ON position, where there is a small potential across the diode and a larger potential across the resistance. Triggering from the ON condition to the OFF condition is effected by applying a positive pulse from source 15. According to the invention (Fig. 4) resistance 14 is replaced by a valve 22, the trigger pulses being applied to the grid of the valve.
Patent GB-1322604-A (GB)
Title: Window assemblies
IPC: E06B7/28
Filed: 1971-04-19
Abstract: 1322604 Extruded window panel CENTRE SCIENTIFIQUE ET TECHNIQUE DU BATIMENT 19 April 1971 [19 March 1970] 25691/71 Heading B5A [Also in Division E1] A transparent polycarbonate window panel, e.g. 2, is extruded as a section including ribs 3, 4 projecting from the same face and each adjacent an edge, and a raised portion 5 on the other face adjacent an edge and terminating thereat at a beaded rim 6. A pair of the panels 2, 2a are located within a frame 1 as sliding window panels, the ribs 3, 4 and 3a, 4a comprising hand holds, and the beaded rims 6, 6a in the closed position of the panels respectively locating against the raised portions 5, 5a as seals. The panels engage, in their closed position, within profile sections 15, 15a at the edge of the frame and are mounted for sliding movement, at the top of the frame between sealing brushes 13, 14 of profile sections 12, 12a, and at the bottom of the frame within profile sections 7, 7a, e.g. of plastics or elastomer, each located within a channel of the frame 1 and comprising raised portions 8, 10, 11 which contact and form a seal with the panel. The upper and lower edges of the panel may be formed to a smaller standard thickness, to permit the use of different thickness panels in frames of the same size. The panels are cut from a continuously extruded section by a circular saw mounted on a carriage which reciprocates lengthwise of the extrudate and which also carries, on either side of the saw, a cutter for milling the edges of the panels and the edge which comprises the bottom slide is polished, e.g. by a train of wheels of increasing fineness which may be included on the carriage.
Patent GB-251173-A (GB)
Title: Improvements in or relating to cramps, vices or the like mechanism
IPC: B66C1/48
Filed: 1925-10-14
Abstract: 251,173. Boadle, S. C. Oct. 14, 1925. Vices: clamps.-A clamp, vice, &c. comprises a circular serrated jaw 3 integral with a member 1 and bifurcated at 2 to receive the end of the pivoted jaw 9. The jaw 9 is provided with a ratchet 10 engaged by a spring-pressed pawl 11 for rough adjustment while grip is effected by turning screw 7. The pawl is provided with a trigger 14 for release. A shackle 15 may be attached to the part 1 for haulage purposes.
Patent GB-320483-A (GB)
Title: Improvements in cylinder grinder
IPC: B24B33/08
Filed: 1928-09-07
Abstract: 320,483. Hutto, M. C. Sept. 7, 1928. Round holes, enlarging and trueing; rotating-tool apparatus. -A cylinder grinder is provided with means for effecting radial adjustment of a number of grinding-stones so as to vary the grinding diameter during the operation. The body 1 is bored to receive a shaft 5 carrying a pair of cones 3, 4, which coact with pins 34 on the grinding- stones 33, the shaft 5 being screwed into the lower cone so that rotation of the shaft varies the distance between the cones to adjust the grinding diameter. The upper end of the body is slotted to receive a driving member 10 whose upper end has a floating connection with a head 12 having a shank 43 driven by a chuck 44 and is retained therein by a pivoted member 16 mounted in a member 18 keyed to the head 12. The member 18 is fitted with stop 22. A sleeve 24 rotatable on the head 12 carries a gear ring 26 connected through an idler 27 to a gear 29 through which passes a square extension 32 of the shaft 5. The sleeve is provided with a toothed rim 36 coacting with teeth 38 on a ring 37 which may be moved longitudinally and then adjusted around the sleeve. The lower end of the ring carries a projection coacting with the stop 22. The sleeve 24 is keyed to a drum 41 having a braking surface which may be engaged by a band brake 45 actuated by pinching together the arms 51. The brake band may be secured to a member 48 and a number of such members may be arranged along a tube 49 to form an assembly, Fig. 1, suitable for grinding out an engine cylinder block, which is mounted for vertical reciprocation over the grinding devices. In order to enable the grinders to enter the cylinders, the ring 37 is rotated back away from the stop 22, thus rotating the sleeve 24 to operate the shaft 5 and contract the head. During operation, the gears 26, 27, 29 rotate together and the shaft 5 is not actuated, but to expand the heads when required, the operator applies the brake 45 thus checking the sleeve 24 and gear ring 26. This causes the shaft 5 to be rotated so as to draw the cones together and move the grinding-stones outwardly. This radial adjustment may be continued by successive periodical operations of the braking- arms 51 until the projection 39 engages the stop 22 and prevents further relative movement between the sleeve 24 and head 12. The device may be set for different maximum and minimum diameters by adjusting the ring 37 in different angular positions on the toothed rim of the sleeve 24.
Patent GB-502460-A (GB)
Title: Improvements in and relating to radio aerials
IPC: H01Q9/32
Filed: 1938-09-02
Abstract: 502,460. Aerials. MONGE, G. DE. Sept. 2, 1938, No. 25764. Convention date, Oct. 30, 1937. Drawings to Specification. [Class 40 (v)] An aerial conductor carried at the upper end of a supporting pole comprises a metallic coating deposited on a rod by electrolysis, by spraying the rod, or by applying metal paint. The coating is preferably applied to the upper part of a tapered bamboo supporting pole, the surface of which may be roughened to retain the coating. When a single pole is not sufficiently high, a coated rod may be supported at the upper end of a separate pole. Specification 14086/00, [Class 40 (v)], is referred to.
Patent GB-617794-A (GB)
Title: Improved means for indicating fault locations on electric transmission lines
IPC: G01R31/08
Filed: 1946-08-28
Abstract: 617,794. Locating faults; impedance measurements. BRITISH THOMSONHOUSTON CO., Ltd., and BAKER, W. S. GRAFF-. Aug. 28, 1946, No. 25832. [Class 371 A fault in a transmission line 1, 2 is located by feeding into the line oscillations of variable frequency constant amplitude from an oscillator 4 and indicating the impedance of the line, the frequency at which the impedance is a maximum or minimum indicating the length of the line in quarter-wavelengths to the open- or short-circuit. Preferably the impedance is indicated on a cathode-ray tube 7, the Y-plates being fed from a transformer 10 in the line, and the X-plates being fed from a time base 8 which controls the frequency of oscillator 4 so that the cathode-ray trace has a maximum or minimum at the frequency corresponding to the length of the fault. The oscillator 4 is adjusted to have a minimum value corresponding to a wavelength of four times the length of the line, and a maximum value corresponding to a wavelength equal to four times the minimum distance along the line under which a fault can be visually detected.
Patent GB-360099-A (GB)
Title: Improved means of controlling regeneration in electrically propelled vehicles
IPC: B60L7/12
Filed: 1930-08-30
Abstract: 360,099. Control of D.C. motors. STEVENS, W. A., Castlemaine, London Road, Maidstone, Kent, and GUY MOTORS, Ltd., Fallings Park, Wolverhampton. Aug. 30, 1930, Nos. 25916/30, 30445/30, 766/31, and 6293/31. [Class 38 (iii).] Regenerative braking.-During regeneration, the series field-winding of a compound traction-motor is reversed. Reversal of the winding 2 may be effected by a bridge arrangement of four rectifiers 17, and only part of the winding is used during regeneration. These four rectifiers may be replaced by a pair of double-pole contactors. Complete circuits are disclosed in Figs 3. and 4 (not shown) and include a brake controller for rheostatic braking with means for varying a shunt across the series field and a safety device to weaken the series field upon excessive braking. According to the first Provisional Specification, an oppositelywound series field may be substituted for the field 2 during regeneration. Specifications 278,073, 330,269, 338,259, [all in Class 38 (iii), Electric motor control systems &c.], 340,003, 340,405, and 341,679 are referred to.
Patent GB-731508-A (GB)
Title: Improvements in rubber treatment
IPC: C08K5/07
Filed: 1953-09-22
Abstract: A vulcanized rubber is obtained by mixing a synthetic rubbery polymer of an aliphatic conjugated diene with a relatively large amount of carbon black and a relatively small amount of hexachloro-2,5-cyclohexadien-1-one, heating the mixture at a temperature above 275 DEG  F., thereafter incorporating vulcanizing and other ingredients, shaping the mass, and vulcanizing it.  The carbon black is preferably used in an amount of 40 to 100 parts and the hexachloro-2,5-cyclohexadien-1-one from 0.5 to 3 parts per 100 parts of rubber.  The synthetic rubber may be a polymer of isoprene or butadiene, or a copolymer of one of these monomers with styrene, acrylonitrile, mono-vinyl pyridine, methyl acrylate or methyl methacrylate; or butyl rubber.ALSO:A vulcanized rubber is obtained by mixing natural rubber with a relatively large amount of rubber-reinforcing carbon black and a relatively small amount of hexachloro - 2, 5 - cyclohexadien - 1 - one heating the mixture at a temperature above 275 DEG  F., thereafter incorporating vulcanizing and other ingredients, shaping the mass, and vulcanizing it.  The black is preferably used in an amount of 40 to 100 parts per 100 parts of rubber and the hexachloro - 2, 5 - cyclohexadien - 1 - one from 0.5 to 3.0 parts.  In example 1, 100 parts of natural rubber, 50 parts of medium processing carbon black and 5 parts of stearic acid are mixed, and from 0.5 to 3.0 parts of hexachloro - 2, 5 - cyclohexadien - 1 - one added and the mix heated up to 300 DEG  F. and masticated for 10 minutes.  After cooling to 200 DEG  F., 3 parts of pine tar, 2 parts of zinc oxide, 1 part of antioxidant, 1 part of accelerator and 3 parts of sulphur are added, and the whole vulcanized for 45 minutes at 287 DEG  F.
Patent GB-631294-A (GB)
Title: Improvements in or relating to a container and method of making the same
IPC: B65D65/14
Filed: 1947-09-26
Abstract: 631,294. Seaming non-metallic sheet material. SHELLMAR PRODUCTS CORPORATION. Sept. 26, 1947, No. 26132. Convention date, March 20, 1939. Drawings to Specification. [Class 42 (i)] [Also in Group XVII] The overlapping edge portions of a sheet of non-fibrous cellulose material folded into container formation, carry marginal lines of a lacquer and are secured together by a thermoplastic adhesive by means of heat and pressure, the lacquer ensuring a good seal between the sheet material and the adhesive at low temperatures. The sheet material may be regenerated cellulose and may be provided on both sides with marginal lines of lacquer by means of two pairs of rollers, one roller of each pair dipping into a bath of the lacquer. The thermoplastic adhesive is applied on the lines of lacquer on one side only of the sheet and discontinuously so that when the sheet is subsequently cut up into blanks the adhesive extends over slightly more than half the length of the blank.
Patent GB-949846-A (GB)
Title: Pyrothiophosphoric acid ester product having pest-combating properties
IPC: C07F9/165
Filed: 1960-07-27
Abstract: A mixture of compounds of formulae: <FORM:0949846/C2/1> and <FORM:0949846/C2/2> is obtained by reacting at elevated temperature an O, O-diethyl phosphorohalidothioate, (C2H5 O)P(S) Hal, in the presence of an N, N-dialkylformamide, specifically dimethylformamide, and a basic substance, specifically sodium bicarbonate, carbonate or hydroxide. An inert solvent may be used. The mixture is insecticidal (see Division A5).ALSO:A pest-combatting agent comprises a mixture of compounds of formul  <FORM:0949846/A5-A6/1> and <FORM:0949846/A5-A6/2> (for preparation of the mixture see Division C2).  Aqueous emulsions are specified.
Patent GB-1494802-A (GB)
Title: Bipolar transistors
IPC: H01L21/225
Filed: 1975-06-20
Abstract: 1494802 Semi-conductor devices SIEMENS AG 20 June 1975 [16 Aug 1974] 26264/75 Heading H1K An emitter electrode 10 on a bipolar transistor consists of initially undoped polyerystalline silicon which has been doped by diffusion or ion implantation. The very thin emitter region 16 of Fig. 2 may be formed by the dopant penetrating through the electrode 10.
Patent GB-482584-A (GB)
Title: Improvements in miners' safety lamps
IPC: F21L23/00
Filed: 1936-09-29
Abstract: 482,584. Miners' safety lamps. HAILWOOD, E. A. Sept. 29, 1936, No. 26339. [Class 75 (iv)] Air inlet and combustion product outlet means for miners' safety lamps comprises relatively long non- radial passages or slots extending through rings R which cool the combustion products, give a whirling motion to the air supply and replace the usual gauze rings. In the form of lamp shown in Fig. 1, an air inlet ring R is mounted on the usual locking ring L and in turn supports the glass G. The ring R, shown in detail in Figs. 7 and 8, is formed with non-radial air inlet slots R<2> communicating with the atmosphere through an annular recess A in the ring. Above the glass G, the usual bonnet may be replaced by a number of superposed rings R<1> each having upper and lower non-radial slots R<2>. These rings are separated by cooling or guard rings D with serrated edges. The top of the bonnet comprises inner and outer rings R<5>, R4 each having peripheral slots. When an ordinary bonnet is used, an air admission ring R is inserted between the glass G and the bonnet.