baber/WOPTO huggingface dataset:
Patent GB-1476586-A (GB)
Title: Fork lift truck for driving over profiled surfaces
IPC: B62B3/06
Filed: 1975-05-12
Abstract: 1476586 Fork lift trucks STEINBOCK GmbH 12 May 1975 [11 March 1975] 19879/75 Heading B8H A fork lift truck includes parallel fork arms 3 which have supporting roller mechanisms 4a adjacent their free ends, each supporting roller mechanism comprising a support lever 7 pivotally mounted on a shaft 9 extending between the side walls of a hollow fork arm and a rocker device 14 pivotally mounted on a shaft 12 extending between the sides 10, 11 of the support lever. A central roller 13 is mounted on the shaft 12 and spaced rollers 19, 20 are mounted on the rocker device. The central roller may be offset relative to the rollers mounted on the rocker device or mounted on a shaft below the pivot axis of the rocker devise. In another embodiment, the rollers 19, 20 are each replaced by two spaced rollers on the shafts 17, 18 respectively.
Patent GB-1348102-A (GB)
Title: Extrusion of macrocrystal scintillation phosphors
IPC: G01T1/202
Filed: 1972-04-28
Abstract: 1348102 Luminescent materials and uses thereof KEWANEE OIL CO 28 April 1972 [30 April 1971 13 Sept 1971] 19928/72 Heading C4S A polycrystalline scintillator of doped alkali alkaline earth metal halide or thallous chloride is formed by extruding under pressure a macrocrystal at a temperature lower than the melting point but greater than either 200‹ C. or half the melting point temperature. The temperature is preferably 100‹ C. below the m.p.: extrusion at lower temperatures results in inferior scintillators. Materials include NaI : Tl, CsI : Tl or Na, KI : Tl, LiC : Eu, CaF 2  : Eu and TlCl 2  (Iodides). Melt grown multiple crystal ingots or monocrystals are extruded; pressure being applied by a plunger, orifice or a screw feed. Pressures are 800-4000 psi for alkali metal halides and 13-45,000 psi for CaF 2 . The extrusion cross-section is cylindrical, rectangular, triangular, semicircular or annular. The extrusion is cut and polished or pressed at elevated temperature to form camera plates, windows, domes and lenses for use in geophysical surveys, clinical measurements, radiation monitoring and spacecraft.
Patent GB-1380730-A (GB)
Title: Waveform generators
IPC: H02M7/527
Filed: 1971-06-10
Abstract: 1380730 Controlling inverters INDUSTRIAL INSTRUMENTS Ltd 9 June 1972 [10 June 1971] 19936/71 Heading H2F In or for an inverter of the type in which switching elements are controlled so as to generate a pulse width modulated substantially sinusoidal waveform, a stepped, waveform X 2  is first generated having a frequency twice that of the required output, each step being compared with the instantaneous value of a triangular wave X 1  so as to derive a pulse width modulated sine wave X 3  of double frequency from which is derived a pair of push-pull waveforms X 4 , X 5  which are used to control the switching elements in two arms of a bridge so as to provide the required inverter output X 6 . As described, an astable circuit, which runs at 2 x 64 fo where fo is the required output frequency, triggers a J-K flip-flop and a monostable which enable a gate to provide 5 microsecond clock pulses at 64 fo as input to a reversible counter. The counter counts up to 15, the 16th pulse reverses the count and the 17th pulse begins to count down to the 31st pulse. The cycle is then repeated. A BCD decoder produces outputs which are fed to a summing amplifier S 1  via weighted resistors which provide a 16-step substantially sinusoidal waveform X 2  which is compared at A 11  with a triangular wave X 1  from an integrator A 1  thus producing the pulse width modulated wave X 3 . A bi-stable B 1  provides pushpull waveforms Q, # which are fed to transistors in adjacent arms of the bridge inverter (Fig. 1, not shown) and which thus periodically reverse the connections between the D.C. input and one side of the load. The transistors feeding the other side of the load are fed with push-pull pulse width modulated waveforms X 4 , X 5  derived from a logic circuit and switch the transistors so as to provide the required output X 6 .
Patent GB-729052-A (GB)
Title: Improvements relating to fireplaces
Inventor: AULD ANDREW BISSETT
IPC: F24B1/183
Filed: 1952-08-08
Abstract: 729,052. Fireplaces. BROOMSIDE FOUNDRY CO. (1922), Ltd. Aug. 20, 1953 [Aug. 8, 1952], No. 19995/52. Class 126. In a back-boiler fireplace the side and back walls are formed from interfitting refractory bricks and define a front flue and fireplace whilst a back boiler flue is prefabricated from metal and positioned behind the back wall the boiler being mounted between the flues. In the embodiments shown the front flue and fireplace are bounded by nine interfitting refractory bricks a', a<SP>2</SP>, a<SP>3</SP>, b<SP>1</SP>, b<SP>2</SP>, b<SP>3</SP>, c<SP>1</SP>, c<SP>2</SP>, c<SP>3</SP> whilst the back flue, which rests on a seating 14 provided with legs 13, is formed (Fig. 4) by a metal plate 12 covering a metal channel member 11 the area of outlet at the the top being adjusted by a damper plate 17. The boiler 15 is mounted below the brick. b<SP>2</SP> a duct 23 leading from the fireplace to the back flue being provided. In Fig. 2 the parts 11, 12, 13, 14 are shown combined as one unit. The need for the heat insulant filling 16 between bricks a<SP>2</SP>, b<SP>2</SP>, and the back flue may be obviated by suitably, cutting and bevelling the back bricks.
Patent GB-1144099-A (GB)
Title: Process for hardening the surfaces of organic synthetic resins
Inventor: DIETZEL KARL
IPC: C08J7/046
Filed: 1967-05-01
Abstract: 1,144,099. Vapour deposition of silicon oxides. FARBENFABRIKEN BAYER A. G. May 1, 1967 [April 29, 1966], No.20010/67. Heading C7F. Synthetic organic materials such as resins are coated with SiO x  (x = 1 to 2) by evaporating SiO 2  in a high vacuum by means of an electron beam source at an energy density of 5-15 KW/ sq. cm. with an effective evaporating surface of 0À3-0À6 sq.cm. and a partial SiO x  pressure of at least 1 x 10<SP>-2</SP> mm. Hg, the object to be coated or the electron beam vaporizer source being moved during deposition so that at least 40 successive layers are vapour deposited at a mean condensation rate of SiO x  of 90-110 A /sec. The organic material may be electrostatically discharged and also heated to a minimum of 120 C. in a high vacuum prior to vapour deposition. The vapour deposition is carried out at 10<SP>-4</SP> to 10<SP>-6</SP> mm. Hg and oxygen may be supplied to the vacuum chamber. The organic materials must not soften at temperatures up to 120 C. and examples of the materials coated are: - terephthalic acid ethylene glycol polyester; polycarbonates; linear thermoplastic polyarylene polyethers; cross-linked materials such as epoxide resins hardened by acid anhydrides or amines, and polymeric diethylene glycol - bis - alkyl carbonate. The substrate may be the solid organic material or any material coated with a lacquer film such as polyurethane lacquer, ricinene/alkyd resin/ aminoplast combination lacquers, epoxide resin lacquers, melamine resin and isocyanate, silicone resin lacquers, epoxy esters, cyclized rubber lacquers and acrylic resin lacquers.
Patent GB-718661-A (GB)
Title: Improvements in the air-cooling of two-stroke internal combustion engines
IPC: F02F1/06
Filed: 1952-08-08
Abstract: 718,661. Casings; ports; passages; cooling. KLOCKNER-HUMBOLDT-DEUTZ AKT.- GES. Aug. 8, 1952 [Aug. 11, 1951], No. 20063/52. Class 7(2) In an air-cooled two-stroke engine in which a number of cylinders are arranged in a line and in which exhaust manifolds 3, Fig. 1, are directed transversely of the longitudinal axis of the line of cylinders, and wherein cooling fins 4 are provided in the cylinder below the inlet and exhaust ducts and the lower ends of-the cylinders extend within the crank case 6 and are surrounded in the latter by a scavenging air chamber 7 extending longitudinally of the line of cylinders, the chamber 7 is connected with the inlet ports 1 by passages 8, Fig. 4, led upwardly and externally of the cooling fins. The engine comprises two lines of cylinders arranged in V-formation which are suspended by their heads 9, Fig. 1, and so supported in the crankcase 6 as to be capable of movement relative thereto due, for example, to thermal expansion whilst walls 10 extend from the crankcase 6 to support the cylinder heads; the walls 10 form the passage 8 and serve as guide means for the cooling air that enters and issues from a space 11, the latter being disposed between the lines of cylinders and connected to the cooling blower. The chambers 7 communicate with a receiver 12, disposed between the cylinders, that is directly connected to a scavenging blower; the scavenging and cooling blowers are arranged at opposite ends of the engine. The invention may be applied to an engine with a single line of cylinders.
Patent GB-170083-A (GB)
Title: Improvements in show cards or holders
IPC: G09F1/04
Filed: 1920-07-09
Abstract: 170,083. Johnson, Riddle, & Co., Ltd., and Speller, J. July 9, 1920. Cards for displaying; show cards.-A show card or holder comprises a plate A having an aperture B and a part C bent over wholly in one direction along the bottom line of the aperture B to form a support. An article is to be displayed in the aperture B, the height and breadth of which may be equal to, but are preferably less than, those of the article. The holder may be made of cardboard, metal, or wood. Reference has been directed by the Comptroller to Specification 1905/01.
Patent GB-1135596-A (GB)
Title: High current radio frequency switch
IPC: H01H33/66
Filed: 1966-05-06
Abstract: 1,135,596. Vacuum switches; electromagnetic switches. JENNINGS RADIO MFG. CORP. 6 May, 1966 [7 May, 1965], No. 20133/66. Heading H1N. A vacuum switch comprises a pair of fixed contacts 18, 26 arranged in a common plane by being mounted on members 13, 24 attached to ends 21, 54 of a housing 2, the movable contact 32 being arranged to bridge the fixed contacts. The contact 32 is annular and has inner and outer resilient fingers 34, 33, being loosely carried by a conical member 37 itself loosely carried by a plunger 56 extending through a bellows 48. The plunger may be solenoid operated and the switch may be spring-biased open. The members 13, 24 assist in cooling the fixed contacts and in shielding the interior of the housing 2.
Patent GB-266217-A (GB)
Title: Improvements in or relating to road vehicles
IPC: B62D7/14
Filed: 1925-11-16
Abstract: 266,217. Cooke, A. T. S. Nov. 16, 1925. Steering-gear and steering; - deflectable axleends and intermediate connections therefor ; locking - apparatus for steering-gear.-Relates to means for steering motor vehicles in which the front and rear wheels are adapted to be turned either simultaneously or separately. According to the invention, drop arms 9, 10, independently pivoted on the wormwheel shaft 3 of the usual steering gear, are connected the one to the front pair of wheels and the other to the rear pair, and clutch mechanism enables the shaft 3 to be coupled to either or both of the drop-arms. Either drop-arm is automatically locked when out of engagement with the clutch so as to fix the wheels not being steered in mid position. In the form shown, a clutch arm 8 fixed to the shaft 3 is moved laterally about a pivot 7 to one of three positions. In the mid position shown, projections 19 on the clutch arm engage both drop-arms. In each of the side positions of the arm 8 one drop-arm only is engaged and a spring catch 22 is released into a recess 23 to lock the other drop-arm. The clutch arm during steering moves through a slot 16 having side gates so that clutching and declutching can only take place when the wheels are in mid position. In a modification, separate clutch levers are employed to connect each drop-arm with the shaft 3. Specification 266,042 is referred to.
Patent GB-784304-A (GB)
Title: Improvements in side delivery rakes
IPC: A01D78/00
Filed: 1954-04-29
Abstract: The subject-matter of this Specification is included in Specification 784,303, but the claims differ.
Patent GB-973671-A (GB)
Title: Wrapped joints
IPC: H01R4/14
Filed: 1962-05-25
Abstract: 973,671. Direct connections between conductors. STANDARD TELEPHONES & CABLES Ltd. May 25, 1962 [May 31, 1961], No. 20205/62. Heading H2E. In a wrapped joint of the type in which a wire is wrapped tightly round a terminal, one or more further wires, each provided with a roughened or sharpedged surface between it and a smooth face of the terminal, are bound to the terminal by the first wire. As shown, a terminal 1 and a wire 2, between which is placed a serrated sheet metal insert 3, are bound together by wrapping a wire 4 round them. In a modification, the plate 3 takes the form of a threequarter or full sleeve placed round the wire 2. In a further modification serrations are formed on the wire 2 and the plate 3 is omitted.
Patent GB-201033-A (GB)
Title: Improved window control mechanism
IPC: E05F11/38
Filed: 1922-07-24
Abstract: 201,033. Marks, E. C. R., (Dura Co.). July 24, 1922. Sliding vehicle win. dow opening and clos. ing apparatus.-A raising and lowering device for sliding windows particularly of vehicles consists of a rod H rotatablv attached to a bracket F on the bottom channel member of the glass panel C and provided with an operating handle I. The window is retained in any position by engagement of the handle I and a rack formed on a slotted tube which houses the rod and is fixed to the frame. Engagement of the handle and rack is maintained by a spring spirally wound on the rod and having its end secured in a slit thereof. In a modification the rod is secured to a bracket and maintains the handle in engagement with the rack by torsion, the rod being preferably looped near its end to increase its flexibility. The window is preferably balanced by means of a lever R and springs S.
Patent GB-239689-A (GB)
Title: Improvements in clutches for transmitting power
IPC: F16D41/06
Filed: 1924-08-28
Abstract: 239,689. Pitter, W. C. Aug. 28, 1924. Ratchet gearing.-In frictional ratchet devices having rotary driving and driven members, the driving-member carries one or more tiltable pawls operating on the sides of an annular groove in the driven member, one end of each pawl being hinged to one end of a separate link, the other end of which is directly pivoted eccentrically t'o the driving-member. A toothed rim 37 or other transmission member is secured to discs 140, 141 bearing on the driving-shaft 36 and having bosses 158, 159 which form with the rim 37 grooves 161, 162. Links 147 are pivoted to the driving-member 146 and to the trailing ends 149 of the frictional pawls 150, which engage the grooves 161, 162 and are biassed by springs 153 anchored to arms 155 on the member 146. The links 147 are in compression during drive, and their ends may be formed with rounded abutment surfaces co-operating with the parts 146, 150 to relieve the pivot pins of shear. Renewable semi-circular bearing-blocks 168 may be rockably mo mted in the pawls 150. One groove and set of pawls only may be used. The Provisional Specification describes also forms in which the driven member is centrally split along a plane at right-angles to the shaft, and in which the driven member is secured to a shaft.
Patent GB-734782-A (GB)
Title: Process of manufacturing phenol resins
IPC: C08L61/34
Filed: 1952-08-13
Abstract: A thermoplastic phenol-aldehyde condensate (a novolac) is mixed with a salt of a methylolated aromatic amine and heated at 100-300 DEG  C. until a homogeneous reaction product is formed.  The product has a higher melting point than the initial novolak and is useful for moulding or in varnishes.  The preferred aromatic amine salt is aniline hydrochloride and this is reacted with one mol. of formaldehyde or a homologue to form the monomethylol compound or with two mols. to form the dimethylol compound or with an intermediate quantity to form a mixture.  Sulphates or formates may be used instead of hydrochlorides.  Methylolketones, e.g. mono- and/or di-methylol acetone, may also be incorporated in the reaction mixture.  Other modifications are to mix methylolphenol with the methylolaniline, and to mix anhydroformaldehyde-aniline with the phenol-aldehyde condensate before or together with the methylolaniline salt.  The products are acid-free.  Acid combined with the amino group can be eliminated by treatment with bases such as Ca(OH)2, MgO, or ZnO.  The phenol-aldehyde condensate may be prepared from phenol or cresol and formaldehyde or a homologue, e.g. acetaldehyde.  The products of the invention may be vacuum distilled or hardened with hexamethylenetetramine.
Patent GB-479027-A (GB)
Title: Apparatus for regulating voltage or other electrical quantities in alternating current systems
IPC: H02J3/26
Filed: 1936-07-22
Abstract: 479,027. Supply systems ; automatic control systems. ALLGEMEINE ELEKTRICITATS-GES. July 22, 1936, No. 20345. Convention date, July 24, 1935. Addition to 460,996. [Class 38 (iv)] Electromotive force ; balancing ; running generators in series.-In the arrangement of negative of zero phase sequence compensation set forth in the parent Specification, voltages corresponding to one or other of these components are applied together with reference voltages to one or more pairs of push - pull valve amplifiers biassed so that they work on the curved part of their grid volts and anode current characteristic. A push - pull amplifier is controlled by a voltage Em corresponding to the negative or the zero phase sequence component and by a reference alternating voltage E which may be the positive phase sequence component. The output is applied across one excitation winding of a generator compensating the negative or zero phase sequence component as the case may be. A second pair of valves in which the reference voltage E is 90‹ phase displaced supplies a second excitation winding on the generator at right-angles to the first excitation winding. The voltage from the push-pull amplifiers may be further amplified in preliminary amplifiers and a power amplifier before application to the corresponding windings of the respective compensating generators.
Patent GB-210731-A (GB)
Title: Improved key-controlled driving-mechanism for typewriting or like machines
IPC: B41J23/12
Filed: 1923-08-10
Abstract: 210,731. Polygraphische Ges. Feb. 3, 1923, [Convention date]. Relay actions. - In actions comprising cams adapted, when released by the keys, to engage a driving-member, the cams receive an initial impulse from the keys and are thereby rapidly brought into engagement with the driving-member. Cams 7, mounted on action-slides 8, are retained by latches 4 and the keys 1 operate links 2 having projections 11 for engaging projections 12 on the cams. On depressing the keys, the links release the latches, and then cause engagement of the cams with a rotary-member 6. the slides being thereby moved to the right. The latches are retained by means of springs 9, and arrest the cams after they have performed one revolution. The cams raise the links 2 to permit return of the latches. Two banks of cams may co-operate with separate driving-members.
Patent GB-896316-A (GB)
Title: Improvements in or relating to semi-conductor devices
IPC: H01L21/60
Filed: 1960-06-10
Abstract: 896,316. Transistors. SIEMENS & HALSKE A. G. June 10, 1960 [June 12, 1959], No. 20462/60. Addition to 886,561. Class 37. A method of producing a semi-conductor device includes the steps of alloying a piece of significant impurity metal to a body of semiconductor material, thereafter maintaining that part of the metal outside the alloy zone in a molten state at a temperature lower than that required for alloying, removing a large proportion of the said molten metal by means of suction, and attaching a member of good heat conductivity to that surface from which the molten metal has been removed. Thus the metal body of good heat conductivity may have an aperture and be connected to the remaining metal by the method described in the parent Specification. Fig. 2 shows a plate 1 of ntype germanium having an annular base contact 2, and indium emitter and collector electrodes 3, 4, alloyed to the plate 1 at about 500‹ C. The device is subjected to streams of nitrogen at about 250‹ C., and the molten indium forming the collector electrode is sucked away via a glass pipe 7. A small piece of solder, e.g. 60/40 Sn/Pb with flux core, is then melted on the collector area and a disc-shaped contact member 9, Fig. 3, of good heat conductivity material, e.g. copper, is placed on the solder layer and thereby attached to the alloy zone, in an atmosphere of nitrogen. The disc 9 may then be soldered to a larger plate of good heat conductivity. The suction step may take place in a reducing atmosphere.
Patent GB-1002120-A (GB)
Title: Improvements in or relating to type cylinders
IPC: B41K3/08
Filed: 1964-05-15
Abstract: 1,002,120. Type cylinders. MITE CORPORATION. May 15, 1964 [June 4, 1963], No. 20466/64. Heading B6F. A type cylinder, which is movable axially and circumferentially to select a type to be printed and is particularly adapted for printing on a thick body such as a book or stiff cardboard, comprises a series of rings 14, 16, 18 &c., each of one character width and having characters, four as shown, on the periphery, a sleeve 20 splined to a shaft 22, spiders 34, 36 fixed to the ends of the sleeve, and helical springs 38, 40 stretched between the spiders to support the rings and to permit radial movement of a ring relative to the sleeve 20 under the impact of a hammer 26 to effect printing. Alternate rings such as 28 have slots 44 engaging two diametrically opposite springs 38 and are cut away to provide clearance at 50 where they engage the other two springs 40. The intermediate rings have slots to engage the springs 40 and are cut away where they engage the springs 38, the arrangement ensuring that little or no movement of rings adjacent to a hammerimpelled ring takes place. End plates may be fixed on the sleeve 20 to hold the rings against axial movement relative to the sleeve. The hammer has inclined surfaces 56 engaging similar surfaces 54 on a ring to effect alignment.
Patent GB-1011064-A (GB)
Title: Improvements in or relating to suspension filing systems
IPC: B42F7/14
Filed: 1962-05-28
Abstract: 1,011,064. Filing papers. RUD FURRER SOHNE A.G. May 28, 1962 [May 31, 1961], No. 20514/62. Heading B6E. A collapsible container for use in a suspension filing system has a bottom wall 3<SP>1</SP>, two substantially parallel side walls 1<SP>1</SP>, 2<SP>1</SP>, and a rear wall, the rear or bottom wall being formed from two separate wall portions 22a, 22b, which lie in substantially the same plane in non-overlapping relationship when the container is erected and are held together by a connecting member 12<SP>1</SP>. The connecting member is provided with semi-circular flaps 13<SP>1</SP> and tongues 14<SP>1</SP>, which engage in apertures 28<SP>1</SP> and recesses 24, respectively, in the rear wall portions; and a channel-shaped portion 151 to receive the upper edges of the rear wall portions. The connecting member has a hook 16<SP>1</SP> by means of which the container is suspended from a rail. The container may be closed at the front by two addition wall portions secured together by a further connecting member and closed by a lid.