baber/WOPTO huggingface dataset:
Patent GB-380163-A (GB)
Title: Improvements in rims, wheels and tyres
IPC: B60C5/02
Filed: 1931-06-19
Abstract: 380,163. Wheel tyres. STEVENSON, A. C., Bervie, Wood Lane, Fleet, Hampshire. June 19, 1931, No. 17872. [Classes 144 (i) and 144 (ii).] A pneumatic tyre comprises a flexible casing with its edges vulcanized or otherwise airtightly connected to the peripheral surface of the rim, the major portion of which is exposed to the airspace of the tyre, and means for preventing total collapse of the tyre in use. In the form shown in Fig. 1, the edges of the tyre 7 are vulcanized to the rim 1 which is formed with lugs 4 for attachment to a wheel 3, as described in Specification 4725/12, Class 144 (ii), Wheel tyres, Pneumatic &c.]. The rim is also formed with hollow chambers 6 (which may have cooling-fins 15) communicating through apertures 5 with the interior of the tyre. To prevent complete collapse of the tyre, a built-up ring 12 is fitted to the rim, as shown. The ring 12 may be formed of metal and may be faced with leather or rubber. A separate rubber liner may be fitted within the tyre. Fig. 3 shows twin tyres 19, 20 secured to the rim 17 by means of a detachable side-flange 21 and a spacing-ring 23. The rim is formed with chambers 31, 32 in communication with the tyres and the hollow spacing-ring. Fig. 8 shows a modification in which the tyre is formed with a circumferential partition 55 to provide two air-chambers 58, 60 in communication with rim-chambers 59, 61 respectively. In further modifications, the tyre is divided by a series of oblique partitions to provide a circumferential series of compartments ; or the tyre may be formed by a series of obliquelyarranged sections. In these cases, the rim may be formed in corresponding separable sections.
Patent GB-481095-A (GB)
Title: Improvements in or relating to electromagnetically-operated contactors, circuit-breakers, and the like switchgear
IPC: H01H71/68
Filed: 1937-07-27
Abstract: 481,095. Latching switches; electromagnetic switches. COX, F. B. July 27, 1937, No. 17896/36. [Class 38 (v)] An electric switch or circuit-breaker comprises main contacts, a main contactor for closing the main contacts, and a closing coil for the main contactor, the coil-circuit being opened and closed by an auxiliary switch. A switch operating member in the switch-opening position engages the auxiliary switch to maintain it open, and is movable in switch-closing direction independently of the main contactor to close or permit closure of the auxiliary switch. The main contactor moves to closed position independently of the switch-operating member when the latter is moved to switch-closing position, and has a detent which, when the main contactor is closed engages the operating member to hold it in the auxiliary switch closing position. In Fig. 1, depression of pushbutton 6 moves the operating-member 15 about its pivot 15b against the action of spring 11b, from the dotted to the full-line position shown, so permitting the switch 5 to close and energize the coil 4, which closes the main contactor 3. In the closed position, a detent 12b on the latter engages the end 21 of member 15 a to maintain it in the position shown, so allowing the push-button to be released. A " stop " button 7 and an overload-plunger 13 may be operated to open the circuit controlled by 3, by lifting part 19 of switch 5. The contacts of the auxiliary switch 5 may be shunted by a pushbutton 6a for remote control. When isolating- switches 23, 23a are employed, they may be arranged to trip the contactor 3 during opening, so that the circuit is not broken by them, an extension 29 being provided which engages a trip lever 24 for engaging the part 19 for this purpose. In Fig. 2, the intermediate lever 15 is pivoted at 16 and urged by a spring 11c so that its free end 34 abuts on a stop 35 and holds a contact 5 on the auxiliary switch away from fixed contact 5b. When button 6 is depressed, it moves 15 to full-line position and allows a spring 5a to rotate lever 31 about pivot 33 to engage 5 with 5b. The consequent energization of 4 attracts armature 30 which engages the tail 21 of 15, so holding the latter in its displaced position. Lever 31 may be moved to open 5, 5b by means of stop button 7 and by a bimetal strip 35 heated by coil 8a.
Patent GB-1047974-A (GB)
Title: Letter opener
IPC: B43M7/00
Filed: 1964-04-30
Abstract: 1,047,974. Cutting appliances. N. LIPTON. April 30, 1964, No. 17902/64. Heading B4B. A letter opener comprises a blade-holder block 1 having a slot 10 between rear and forward plates 7, 4, an oblique blade 21 secured to the forward plate with a cutting point 32 projecting below the bottom wall 25 and a horizontal envelope-supporting base 35 beneath the blade having an upright plate 16 which is slidably retained in the slot in the holder block by a retainer plate 3 with pins 19, 20, snap-fitting in sockets in the rear plate 7. As described, a spring 14 is inserted in the slot prior to assembly to urge the base 35 away from the bottom wall 25. In operation, an envelope 26 is inserted in an access opening 23, and the cutter block manually urged downwards against the base 35. The rear plate 7 is slightly deeper than the forward plate 4, so that when it contacts the base 35 the knife cuts only the upper paper layer of the envelope as it is drawn through the gap 23. The bottom corners of the forward plate and retainer plate may be rounded 34 to remove unevenness in the envelope and prevent tearing. When the device is to be taken apart for blade-changing, a coin may be inserted in recesses 33 at each side of the block to loosen the snap-fitting retainer plate. In a modification the detachable retainer plate 3 forms the forward plate of the block. The supporting base 35 and upright plate and spring may be withdrawn to permit remainder of the device to be used as a letter opener.
Patent GB-1259844-A (GB)
Title: Compression of peat and compressed peat as a plant seed carrier
Inventor: ADAMS NELSON WILLIAM KITCHENER FRENCH
IPC: A01G9/10
Filed: 1969-04-09
Abstract: 1,259,844. Treating soil. N.W.K.F. ADAMS. 9 April, 1969 [19 Sept., 1968], No. 18047/69. Heading A1E. [Also in Division C5G] A method of compacting peat into a unitary mass the steps of reducing the moisture content of the peat to between 10 and 20% by weight on a dry basis and compressing this peat at a pressure between 1000 and 2000p.s.i. for 1 to 5 minutes at a temperature between 80‹ and 120‹C. Plant seeds and fertilizers may be admixed with the peat before compression. The peat may be compressed into sheets or blocks and plant seeds may be covered with powdered peat before introduction into the peat to be compressed. Alternatively plant seeds may be secured to the peat after compression.
Patent GB-1090676-A (GB)
Title: Improvements in or relating to the production of foamed material
Inventor: MILLWARD SIDNEY WILLIAM
IPC: C08J9/00
Filed: 1965-04-29
Abstract: A vinyl chloride polymer plastisol is foamed by the incorporation of an inert gas, substantially free from hydrogen, in the form of bubbles with, in addition, a chemical or volatile liquid-blowing agent and blowing effected by heating and the blown plastisol stabilized by cooling.  The plastisols may be plasticized polyvinyl chloride or plasticized copolymers prepared from vinyl chloride and, e.g. vinyl acetate, vinylidene chloride and acrylic esters. The inert gas is introduced in the plastisol in the form of bubbles under pressure or may be injected and distributed in the plastisol by mixing.  When a volatile liquid blowing agent is used its boiling point at atmospheric pressure is preferably not above 50 DEG  C. and is used in a proportion of 2-6% by weight of the plastisol. The chemical blowing agent used in the examples is "Genitron" O.B. which is a Registered Trade Mark for p,p1-oxy-bis-(benzene sulphonhydrazide).  The plastisol with the incorporated inert gas and blowing agent may be deposited in a mould, on a non-adherent moving belt, or on or beneath a moving length of adherent fabric, or between two moving lengths of fabric and heated to effect or complete the blowing. Plasticizers include mixtures of phthalates and tritolyl phosphates.ALSO:A foamed plastisol of a vinyl chloride polymer is produced on a backing, e.g. fabric, by incorporating into the plastisol an inert gas in the form of bubbles with, in addition, a chemical or volatile liquid blowing agent, blowing the composition and stabilising the blown plastisol by cooling.  The vinyl chloride polymer may be polyvinyl chloride or copolymers prepared from vinyl chloride and, e.g. vinyl acetate, vinylidine chloride and acrylic esters.  The inert gas is introduced in the plastisol under pressure or may be injected and distributed in the plastisol by mixing. Plasticisers include mixtures of phthalates and tritolyl phosphates. In an example a plastisol of a vinyl chloride emulsion polymer with a plasticiser containing inert gas and blowing agent is caused to flow under a doctor blade and over a moving length of suitable fabric which is then passed through a conventional air-circulating oven, in which the gas bubbles contained in the plastisol are caused to expand, giving rise to a foam of medium density tenaciously adherent to the surface of the fabric, the whole structure then being stabilised by cooling.
Patent GB-274098-A (GB)
Title: Friction drive
IPC: F16H13/08
Filed: 1927-07-07
Abstract: 274,098. Freuler, K., (Assignee of Schelling, E.). July 7, 1926, [Convention date]. Friction gearing comprises planetary balls 3 driving a central shaft 10 at increased speed from a belt pulley 8. A fixed housing 1 surrounds the gearing and supports upon a projecting boss 7 the pulley 8. The frictional pressure is maintained by a conical spring 5 which presses a conical race member 4 towards a similar fixed race member 2, the balls 3 being thrust inwards against the shaft 10. Pins 9 project from the pulley 8 between the balls communicating planetary motion thereto.
Patent GB-713141-A (GB)
Title: Improved clutch arrangement preferably for presses
IPC: F16D67/02
Filed: 1952-07-17
Abstract: 713,141. Friction clutches. KNOCHL, L. July 17, 1952 [July 17, 1951], No. 18110/52. Class 80 (2) Engagement of an expanding-ring clutch 7 between a driving wheel 2 and a member 1 secured to the shaft 5 of a press or like machine is produced by engagement of an auxiliary friction clutch between the face of wheel 2 and a member 12, which latter has a recess 11 engaging one end 9" of a lever 9 pivoted at 10 in the member 1, the other end 9' of the lever acting on the ring 7. Member 12 is connected by rollers 23 engaged in inclined recesses 24 to a member 25 connected by a spring- loaded friction coupling 29, 30 to a ring 31. When ring 31 is free, an arcuate spring 32 produces relative rotation between member 12, 25 and springs 21 cause engagement of the auxiliary clutch which then moves lever 9 to engage the clutch 7. When rinig 31 is held fast by friction clamps 52,53 tiltably mounted on a pivoted arm 46, member 12 continues to rotate, rollers 23 causing it to be retracted from wheel 2, thus allowing disengagement of clutch 7 until the rollers reach the end of the recesses 24, whereupon member 25 is carried along and the friction coupling 29, 30 brakes the shaft 5 to rest through the lever 9. Arm 46 is normally held by a spring 56 in position to hold ring 31 fast. One arm 65 of a bell crank lever is connected at M to a pedal, the other arm 66 carrying a pivoted catch 44 normally held by a spring 71 in engagement with a projection 45 on arm 46. On depressing the pedal to start the press, catch 44 pulls arm 46 to the left, so freeing the ring 31. During the ensuing revolution of shaft 5 the catch 44 is released from the projection 45 by means of a roller 42 carried by shaft 5 and coacting with a lever 43 which tilts the catch 44 through a rod 72, but the return movement of arm 46 te the right is prevented until the top of the press stroke by a lever 61 co-acting with a cam 40 on shaft 5. Rod 72 may, when required, be tilted, to the left out of the path of lever 43, so as to allow the press to operate until the pedal is released.
Patent GB-662438-A (GB)
Title: Improvements relating to starting means for internal combustion prime movers
Inventor: WARNE EUGENE HAROLD
IPC: F02C7/272
Filed: 1948-07-06
Abstract: 662,438. Starting gas turbine plant. LUCAS. Ltd., J. June 7. 1949 [July 6, 1948], No. 18117/48. Class 110(iii) [Also in Group XI] A starting means for an internal combustion prime mover, e.g. a gas turbine or jet-propulsion engine, comprising an apparatus for electrically-firing a cartridge adapted to supply a quantity of compressed gas, has in combination a fuel pump a driven by an electric motor e, and a switch o responsive to the liquid fuel pressure in the system for controlling the circuit of the cartridge firing means. On closing a switch g the motor e drives the pump a to supply fuel to a main burner tube c through a non- return valve b and to a pilot burner i, the latter being ignited by an electric ignition device energized by an induction coil k. When the fuel pressure in the tube c reaches a predetermined value the switch o closes to fire the cartridge m if a further switch n is closed.
Patent GB-736015-A (GB)
Title: Improvements in or relating to traversing gears for winch drums
Inventor: MARSH JOSEPH BENJAMIN
IPC: B66D1/39
Filed: 1952-07-18
Abstract: 736,015. Converting rotary into reciprocating motion. NATIONAL RESEARCH DEVELOPMENT CORPORATION. July 17, 1953 [July 18, 1952], No. 18171/52. Class 80 (3). [Also in Group XXX] Reciprocatory movement of a winch drum 1 is obtained by mounting the drum 1 for axial movement on a rotatable hollow shaft 3 having a longitudinal slot 8 therein through which a member 7 projects and engages a diamond or return thread 10 on a screw 11. The shaft 11 is adapted to be rotated at a speed different from that of drum 1, so that the drum 1 is moved backwards and forwards along its shaft as it rotates, through variable-speed gearing connecting gears 15, 21 on the shafts 3 and 11 respectively.
Patent GB-574227-A (GB)
Title: Improvements in and relating to x-ray apparatus
IPC: H01J35/06
Filed: 1943-11-03
Abstract: 574,227. R÷ntgen-ray tubes. BRITISH THOMSON - HOUSTON CO., Ltd. (General Electric Co.). Nov. 3, 1943, No. 18183. [Class 39 (i)] Cracking of the rotating tungsten target 41 due to differential expansion between it and the copper supporting base 31 is avoided by providing a groove 35 isolating the active target surface from the base, to which it is connected only at the central non-apertured portion 39. Specifications 542,665 and 556,787, [Group XXXV], are referred to.
Patent GB-1013493-A (GB)
Title: Production of a tobacco filler for cigarettes, cigars or the like
IPC: A24C5/34
Filed: 1961-11-16
Abstract: 1,013,493. Automatic control systems. K. KÍRBER. Nov. 16, 1961 [Nov. 17, 1960], No. 18254/65. Divided out of 1,013,492. Drawings to Specification. Heading G3R. [Also in Division A2] The Specification is identical to that part of the Specification 1,013492 which is concerned with compressing the tobacco stream in advance of trimming by a roller whose pressure is varied by a signal from a measuring device placed at any point in the tobacco stream. Specifications 940,153 and 1,013,494 also are referred to.
Patent GB-497965-A (GB)
Title: Improvements relating to the abrasive treatment of articles
IPC: B24C3/30
Filed: 1937-07-01
Abstract: 497,965. Sand-blast; rumbles. AMERICAN FOUNDRY EQUIPMENT CO. July 1, 1937, No. 18337. Convention date, July 1, 1936. [Class 60] Apparatus for abrasively treating metal articles com prises an abrasive throwing wheel 11, a flexible endless conveyer 8 mounted so as to form a concave trough portion for supporting the articles, means for effecting a travelling movement of the conveyer for tumbling the articles thereon and means for advancing the articles across the belt and through the abrasive stream The abrasive throwing whee comprises throwing blade: 13, a control member 15 and and an impeller to which abrasive is supplied from a hopper 23. Spent abrasive is returned to the hopper by screw conveyers 32, 33 and an elevator 34. The endless conveyer 8 comprises a flexible belt having lugs 91 adapted to engage in corresponding grooves 92 in rollers 39 and 40 by which the belt is supported and driven. Articles are fed into the trough at one end, across the belt and are discharged at the other end of the trough the feeding and discharge openings of the housing being provided with flexible curtains. In order to effect the feeding of the articles along the trough, the bottom of the trough is made sloping by mounting the rollers 39, 40 in non-parallel relation as shown in Fig. 1. The shaft 41 of each roller is connected at its ends by a knuckle joint 46 to a stub shaft 57, the stub shaft at one end of the roller being mounted in a fixed bearing 44 and that at the other end in a bearing 61. The two bearings 61 are adjustable towards or away from each other by a threaded shaft 82. To permit such adjustment each shaft includes a keyed slidable connection 71. The feeding of the articles may be assisted by articulated plates 115, 116 arranged at an angle to the belt. In a modified form, Fig. 7, the conveyer comprises a plurality of bars 250 extending between endless chains 241 each mounted around three sprocket wheels 270, 271 and 272. The bars 250 are formed by angle bars mounted in pairs with their fianges back to back and extending through slots 253, Fig. 8, in lateral extensions 252 of the chain links 260. Lugs 254 may be provided on the bars to assist the feeding of the articles along the trough. A number of abrasive throwing wheels may be provided.
Patent GB-636691-A (GB)
Title: Manufacture of vat dyestuffs of the anthraquinone series
IPC: C09B1/42
Filed: 1947-07-10
Abstract: Vat dyestuffs of the formula <FORM:0636691/IV (c)/1> wherein the two alkyl groups may be linked to form a ring are made by the process of the parent Specification, using components such that ring I contains a substituent different from the sulphonamido group in the above formula.  Substituents specified for ring I are alkyl, alkoxy, aryloxy, alkyl- or aryl-sulphone, sulphonamido groups other than that already present in the molecule, halogen, and fused-on rings.  The products dye wool, silk, cotton, linen, artificial silk, regenerated cellulose, and nylon, and may be converted to their leucosulphuric esters.  In examples: (1) benzene-1- carboxylic acid-4-(N-dimethyl or diethyl)-sulphonamide is converted to its acid chloride and reacted with 1-amino-4-(p-chloro-benzoylamino)-anthraquinone, or the reverse order of acylation may be adopted; (2) 4-phenyl-, methyl-, or ethyl-sulphone benzoic acid chloride is reacted with 1-amino-4-p-(N-dimethyl-sulphonamido-benzoylamino-anthraquinone; (3) 4-(N-dimethyl)-sulphonamido-benzoyl chloride is reacted with 1-amino-4-(m-methylsulphonebenzoylamino) - anthraquinone, 1 - amino - 4-(p - N - diethylsulphonamido - benzoylamino)-anthraquinone, 1 - amino - 4 - (p - methylbenzoylamino) - anthraquinone, or 1 - (p-phenoxybenzoylamino) - 4 - aminoanthraquinone; (4) piperonyl chloride is reacted with 1 - amino - 4 - (p - N - dimethylsulphonamidobenzoylamino) - anthraquinone; (5) naphthalene - b  - carboxylic acid chloride is reacted with 1-amino-4-(p-N-dimethylsulphonamido - benzoylamino) - anthraquinone. A table is given of the properties of dyes having the following substituents in ring I combined with a sulphodimethylamido radical in the other benzene nucleus: 4-methoxy, 4-iodo, 2-chloro, 2.4-dichloro, 4-phenyl, 4-cyano, 3.4.5-trimethoxy, 4-fluoro, 3.4-dichloro, and 3-methoxy.  Also, a 4-chloro-substituent is coupled with a sulphomorpholide radical.  1 - Amino - 4 - (p - methyl or phenoxy-benzoylamino)-anthraquinone is obtained by acylation of 1-amino-4-nitro-anthraquinone and reduction of the nitro group. Specification 635,924 is referred to.
Patent GB-381540-A (GB)
Title: Improvements in low frequency transformers
IPC: H01F19/02
Filed: 1931-06-26
Abstract: 381,540. Transformers ; valve amplifying circuits. POLIAKOFF, J., 14, Sutcliffe Close, Golders Green, London. June 26,1931, No. 18456. [Class 38 (ii).] Comprises a low frequency transformer for intervalve and similar types of coupling, in which the secondary is formed of a number of series connected parts which may assist each other or act differentially, some or all of the parts having different frequency-amplification characteristics, which are so chosen and the effect of each is given such share of the whole as to give the resultant response of the transformer the shape best suited for the particular working conditions. In the form shown in Fig. 1, the part S<1> of the secondary has connected across it a condenser C and resistance r so that it resonates at a low frequency, while the part S<11> of the secondary is designed to resonate at a high frequency, the response curve of the whole transformer thus having two resonance peaks. In a modification, to allow the low frequency resonance peak to be adjusted, the left-hand secondary lead is connected to the slider of a potentiometer bridging the winding S<1>. Several modifications are described in the Specification by means of which various parts of the response curve can be adjusted. The Specification gives constructional details of some transformers together with a number of response curves. The capacities may be obtained by means of bifilar windings.
Patent GB-745798-A (GB)
Title: Improvements in or relating to dictation apparatus comprising a record carrier in the form of a foil
Filed: 1954-06-24
Abstract: 745,798. Magnetic recording and reproducing apparatus. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 24, 1954 [June 27, 1953], No. 18548/54. Class 40(2) In a dictation apparatus employing a magnetic sheet record clamped by its edge along a cylinder, a freewheel or similar non-return device (details of which are not shown) is provided which permits rotation of the cylinder in a winding-up direction of the sheet, as shown by the arrows in Figs. 1 and 2a, but prevents rotation in the opposite direction. The record sheet is clamped' by a bar 7 pivotable about an axis 8, under the influence of an arm 11 and spring 12. Prior to removal and insertion of a record sheet, the cylinder 2 may be turned by hand clockwise, as viewed in Fig. 2a, by knob 6. At the same time, a knob 16 on a shaft 15 is pressed inwards, Fig. 1, against. a spring 23 until at a certain point of the cylinder's rotation the pin 20 on the tip of shaft 15 enters hole 21 and locks its position Counterclockwise rotation, Fig. 2a, of the knob 16 and shaft 15 brings an eccentric cam 14 into contact with the arm 11 to lift the clamping bar 7. A modification is shown in which the knob 16, Fig. 3 (not shown), is held in the inoperative position against the tension of a, spring similar to the spring 23. Fig. 4 shows a stop member which when moved axially to the operative position to lock the cylinder simultaneously releases the clamp 7 by means of a wedgeshaped cam 32.
Patent GB-385619-A (GB)
Title: Improvements relating to radio receiving apparatus
IPC: H03G3/22
Filed: 1931-06-26
Abstract: 385,619. Valve circuits for wireless reception. TOMLINSON, A. V., 65, Victoria Street, London.-(Union Switch & Signal Co. ; Swissvale, Pennsylvania, U.S.A.) June 26, 1931, No. 18583. [Class 40 (v).] Automatic volume control in a wireless receiver, using a dry surface contact type of detector, is provided, by applying the detected energy to an audio-frequency choke and utilizing a direct current potential across a part of this circuit to influence the screen-grid, or control grid, potentials of the valves in the high frequency amplifier. The Figure shows a detector 4 with the output applied to choke 14 and resistace 15. The voltage across resistance 15, after amplification, varies the control grid bias of the amplifying valve 1a. In a modification, Fig. 1 (not shown), the screen grid potential is controlled. Specification 381,206 is referred to.