baber/WOPTO huggingface dataset:
Patent GB-1127764-A (GB)
Title: Improvements in or relating to machines for blow-moulding plastics
Inventor: O'FIELD JOHN WILLIAM
IPC: B29C49/42
Filed: 1964-08-13
Abstract: 1,127,764. Blow-moulding machine. SEDDON BROS. INVESTMENTS Ltd. 22 Sept., 1965 [13 Aug., 1964], No. 33113/64. Heading B5A. A blow-moulding machine includes a die head, a mould therebelow, a blowing mandrel also below the die head, means to extrude a plastics tube down into the mould, which opens to receive it and closes about it and the upper part of the mandrel, the mandrel entering the leading portion of tubing prior to mould closure to maintain the tubular form thereof by an upwardly moving gas stream, which also flows over the upper surfaces of the mandrel and issues therefrom, and means to inject gas through the mandrel into the tube after mould closure for blow-moulding. Gas preferably issues from openings spaced preferably equally around a shoulder on the mandrel, a distance from the upper end thereof, the openings preferably being inclined such that the gas stream forms part of a cone, tip uppermost, the tip lying on the longitudinal axis of the mandrel. The shoulder is preferably formed at such a position on the mandrel that it remains outside the mould when it is closed.
Patent GB-508470-A (GB)
Title: Improvements in switch-frogs for the overhead conductors of electric traction systems
IPC: B60M1/14
Filed: 1937-12-01
Abstract: 508,470. Switch - frogs for overhead electric conductors. BRITISH INSULATED CABLES, Ltd., LONDON PASSENGER TRANSPORT BOARD, BROOM, T. C., and POWELL, H. J. Dec. 1, 1937, Nos. 33223/37, 20258/38, and 27806/38. [Class 104 (iii)] A switch-frog for overhead conductors comprises a body 1 on the underside of which is pivoted at 10 a switch 9 having two tongues 11, 12, of which the former connects the main conductor 5 to the branch in position, while 12 connects 5 to 6 in Fig. 3 position. The switch is moved by a pulley 15 operated by a chain 17 and connected by a crank-pin 22 and rod 23 to a pivot 21 on the switch. The switch is normally kept in Fig. 1 position by a spring 18 which resists the pull of the chain 17, and in this position the rod 23 is dead-centred, so that the switch cannot be moved by a thrust of a passing collector. The pulley 15 is mounted on a bracket 14 fixed to either side of the body 1. In another form, the crank pin 22 engages a slotted plate on the switch. As applied to a cross-over, a single tongue is centrally pivoted on the frog and is moved by the pulley, crankpin, and rod as above, the movement being controlled by pins on the tongue guided in slots in the frog.
Patent GB-369539-A (GB)
Title: Improvements in or relating to boot and shoe trees
IPC: A43D3/14
Filed: 1931-12-01
Abstract: 369,539. Boot &c. trees. WILLIAMS, F. J., (trading as VAUGHAN & WILLIAMS), 7, St. George's Terrace, Brearley Street, Birmingham. Dec. 1, 1931, No. 33235. [Class 17 (iii).] Relates to boot and shoe trees of the kind in which toe and heel parts are carried by two toggle links 3, 4 which are adjustably connected by a slide 11, one link 3 being formed with teeth 7 adapted to be engaged by a spring- pressed transversely-movable catch member ; and consists, primarily, in wholly housing the catch member 15 within the slide. The link 3 is of inverted channel form, and the slide 11 is of tubular form, the link 4 being secured between ears 13 of the slide by a pivot pin 14. The catch men.ber 15 is a flat plate formed with teeth 16 for engagement with the teeth 7, and carrying an operating pin 17 which extends outwardly through one wall of the slide. The catch plate is held normally in engagement with the link 3 by a blade spring 19 which is mounted on the pivot pin 14, and which has ears 21. 22 adapted to engage the edges of the catch plate to prevent rotation of the latter. In a modification the teeth 7 are formed at one edge of a slot provided in the link 3, and the teeth on the catch plate project laterally.
Patent GB-1016222-A (GB)
Title: Improvements in or relating to acoustic ear-protectors
Inventor: COLLINS GEOFFREY
IPC: A61F11/08
Filed: 1963-08-22
Abstract: An acoustic ear protector comprises a tube closed at one end and curved in a plurality of dimensions to fit in self-supporting manner in the concha of the auricle with the open end of the tube located loosely within the external auditory meatus to form a filter producing attenuation of unwanted sounds over a band of frequencies determined by the dimensions of the tube.  The closed end is sealed by a plug 2 slidable in the tube to vary the length of the resonating column of air in the tube.  The length of the tube is approximately equal to a quarter of a wavelength of the frequency to be attenuated. The tube is shaped over a mandrel, heated and removed from the mandrel after cooling.
Patent GB-761331-A (GB)
Title: Improvements in or relating to impulse-converting circuit-arrangements employing transistors
IPC: H03K3/26
Filed: 1954-11-17
Abstract: 761,331. Transistor pulse circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Nov. 17, 1954 [Nov. 20, 1953], No. 33293/54. Class 40(6) In a circuit for converting a train of pulses of the same sign into a train of positive and negative pulses, the pulse train is fed to a transistor frequency divider which returns pulses of larger amplitude but of opposite sign to produce the desired pulse train in the input circuit. Positivegoing pulses a from generator 1 are applied to point contact transistor 4 having a circuit 5 tuned to a subharmonic in the base lead to provide positive feedback, the incoming pulses synchronizing the oscillations. The amplitude of the generated pulses b is such that when added to the pulses a, the desired train c is obtained. These pulses may be converted by transistor 7 to the waveform d. The transistor 4 need not be in an oscillatory state but may be arranged to be triggered into an unstable state by the pulses a. The circuit 7 may be self-oscillatory and synchronized by the pulses c. If the frequency of circuit 5 is a lower subharmonic, equal numbers of positive pulses will occur, separated by single negative pulses, the output wave d having long and short pulses in alternation.
Patent GB-985008-A (GB)
Title: Static switching circuits
IPC: H03K17/72
Filed: 1963-08-23
Abstract: 985,008. Switching systems; electric converting systems. BROOKHIRST IGRANIC Ltd. Aug. 23, 1963 [Nov. 23, 1962], No. 33451/63. Headings H2F and H2H. A control circuit for an A.C. load connected across a supply L1, L2, or a D.C. load connected in series with a controlled rectifier SCR comprises an AND circuit requiring two D.C. input voltages across terminals 18, 20. A full-wave D.C. supply is given by a rectifier BRT2 which is clipped at 10 v. by a Zener diode ZD and applied across terminals 18, 20 through resistors R3-R5. Another D.C. 10 v. supply 16 normally maintains a transistor T1 conductive, which renders another transistor T2 non-conductive. To energize the load voltages must be applied to both terminals 18, 20 for example by energizing transistors T3, T4 which causes voltages of 10 v. to appear across resistors R8, R10, hence resistors R3-R5 become currentless each halfcycle when each half wave from rectifier BRT2 reaches 10 v. At this cycle point T1 blocks rendering T2 conductive, energizing a transformer 12 which fires the SCR. An indicator lamp 14 is energized at the same time as the load.
Patent GB-1508266-A (GB)
Title: Wooden building having the appearance of a log cabin with corner joints formed by crossed interlocking logs
IPC: E04B1/10
Filed: 1976-08-11
Abstract: 1508266 Joints in mock log cabins ARCA HOLDING SA 11 Aug 1976 [14 Aug 1975] 33487/76 Heading E1W [Also in Division F2] A mock log cabin has corner joints comprising short log members 8 formed with upper and lower oppositely directed rebates in which the members 8 are engaged in alternating superadjacent crossed - over configuration. The corner has outwardly directed @save ends 9 and inwardly directed stubs. Horizontally extending boards 7 are provided with end tenons 14 which are engaged in cavities formed by outwardly directed lateral rebates in the log members and which are clamped in place by adjacent log members. An inner skin of plasterboard 2 may be fixed to noggins 3 and glass or mineral fibre mats or foamed in situ plastics incorporated between the skins 1, 2. A further skin 5 may be sprung between the noggins to provide an air gap behind the boards 8 for ventilation. Bolts in bolt holes 17 are tightened after drying of the timber. The boards 7 and logs 8 may be prefabricated as a single unit by glueing.
Patent GB-300903-A (GB)
Title: Method of treating the product of reaction resulting from the treatment of raw phosphates or other phosphate containing substances with acids
IPC: C05B11/04
Filed: 1928-11-15
Abstract: 300,903. Stockholms Superfosfat Fabriks Aktiebolag. Nov. 19, 1927, [Convention date]. Manures.-In the treatment of a solution of monocalcium phosphate with alkali or ammonium sulphates to precipitate the calcium as sulphate, and of the resulting solution of alkali or ammonium dihydrogen phosphate with excess of ammonia to precipitate triammonium phosphate or a mixture thereof with trisodium or tripotassium phosphate, the solution is cooled during the treatment with ammonia, say to O‹C, if desired under pressure, whereby precipitation is substantially complete, and the mother liquor for re-use consists almost solely of ammonia. The solution for treatment is obtained by the action of acids or acid mixtures on raw phosphates, and therefore alkali &c. salts of the acids used will also be formed during the treatment and will appear in the final precipitate.
Patent GB-212614-A (GB)
Title: Improvements in differential feeding mechanisms for sewing machines
IPC: D05B27/02
Filed: 1922-12-08
Abstract: 212,614. Thompson, W. P., (Union Special Machine Co.). Dec. 8, 1922. Sewing-machines; duplex feed; feed by dogs.-A differential feeding mechanism specially adapted for use in a small work-arm comprises a main feed-bar with an auxiliary feed-bar slidably mounted therein and given vertical reciprocation by a lever pivoted in the feed arm, feeding movements being simultaneously transmitted from the same operating shaft, while the differential movement is produced by a link on the main feed-bar connected to a lever pivoted to the auxiliary feed-bar and fulcrumed on the lifting-lever. The feed-bar 26 has sliding pivotal mounting at 27 and an adjustable link connection 43 with a rocking lever 36 actuated by an eccentric-rod 41 from the shaft 2. The vertical reciprocation is effected by a lever 45 mounted on an adjustable pivot 50 and connected to the bar 26 by links 54 while at its other end it is pivoted to an eccentric-rod 57. A bar 59 carrying the auxiliary feed-dog 25 is mounted in a slot in the bar 26 and is pivotally connected to a lever 63 by a pin 66 passing through a slot 65 in the side of the bar 26. The lever 63 has a slot 70 wherein is adjustable a link 71 pivoted at 73 to the bar 26. The lever 63 also is formed with a slotted fork 68 which embraces the lever 45 and engages a fulcrum pin 69 therein. This arrangement causes the dog 25 to have a slightly longer feeding stroke than the dog 24 and produces falling of the work. Stitchforming mechanism of known type is described comprising a threaded looper 8 mounted on a shaft 9 which is given needle -loopengaging reciprocation by mechanism comprising a link 10 connected to a ball-ended arm on the shaft, a bell-crank lever 12, a link 14 and a lever 16 actuated by an eccentric-rod 17 mounted on the main shaft 2. Endwise needle-avoiding movement is given to the shaft 9 by a rock-lever 19 connected to an eccentric rod 20 and having a forked arm connected to a collar 21 freely mounted on the shaft 9 between fixed collars 22.
Patent GB-1362011-A (GB)
Title: Phosphorous esters stable to hydrolysis and processes for producing the same
IPC: C07F9/145
Filed: 1971-07-16
Abstract: 1362011 Phosphite esters UGINE KUHLMANN 16 July 1971 [17 July 1970] 33594/71 Heading C2P The invention comprises esters of Formula I where x is 1, 2 or 3, the C 3 H 7  is isopropyl and R is either C 6-30  aryl or alkylaryl (this term includes alpha-methylbenzylphenyl) optionally containing a hydroxyl group or C 2-30  aliphatic, cycloaliphatic, cycloaliphatic-substituted aliphatic or arylaliphatic optionally containing 1 or 2 Cl atoms, a Br atom and 1 to 6 O atoms. The invention also comprises a mixture of two or more esters of Formula I and a mixture of one or more esters of Formula I and less than 5% by weight of an amine having a boiling temperature higher than 150 C. The esters of Formula I may be prepared by transesterifying an aryl phosphite in which the aryl group is R is transesterified with a phenol AOH in which A is triisopropylphenyl. Esters of Formula I in which x is 3 may be prepared by transesterifying aryl phosphites in general with AOH. Esters of Formula I in which x is 1 or 2 may be prepared by transesterifying a mixed aryl and triisopropylphenyl phosphite with ROH to effect selective substitution of R for aryl. Esters of Formula I may also be prepared by reacting a triisopropylphenol, alone or associated with one or more compounds ROH, with PCl 3 , the triisopropylphenol and ROH being used simultaneously or successively and any chlorophosphite intermediate formed optionally being isolated. Esters of Formula I or mixtures thereof may be prepared by reacting an epoxy compound with a triisopropylphenyl chlorophosphite, alone or mixed with esters of Formula I. The esters of Formula I, mixtures thereof and mixtures thereof with amines are stable to hydrolysis.
Patent GB-857554-A (GB)
Title: Improvements in or relating to tandem axle suspension units
Inventor: CHAMBERS HARRY DONALD
IPC: B61F5/30
Filed: 1957-10-29
Abstract: 857,554. Mounting bodies on, and springs for, road and rail vehicle axles. EATON AXLES Ltd. Oct. 31, 1958 [Oct. 29, 1957; Feb. 4, 1958], Nos. 33697/57 and 3590/58. Classes 103(6), 108(2) and 108(3). At least two axles 3, 4 of a vehicle have associated ram and cylinder units 12, 11 connected in a common hydraulic system in which a body of gas 24 is enclosed. As shown in Figs. 1 and 4, the axles 3, 4, are connected respectively by leading and trailing sets of links 7, 9, and 8, 10. Each lower link 7, 8, is connected to a respective ram member 12 which has a rubber-bush resilient connection with a piston 31 slidable in one end-portion of the cylinder unit 11. Liquid is contained in spaces 25, 32, on either side of each piston, and is retained by a rolling type seal 29. A partition 26 separates the liquid spaces 25 from the air space 24. The pistons 31 are each rigid with a respective plunger 28 both of which operate in a common oil-filled cylinder 39. Vehicle height is controlled by a valve assembly 53 (Fig. 5) which governs the admission of liquid to the spaces 25 from a pump 50. When the vehicle is at rest, liquid remains under pressure between the plungers 28 and is connected by a passage 22 and conduit a with the space above a floating piston 62 in the valve assembly 53. This causes a piston valve 57 to be depressed into a position which permits flow from the pump 50 via a conduit b to pass via a conduit c to one of the spaces 25 (there is a connection-not shown-between the two spaces 25 internally of the cylinder unit 11). When the vehicle commences to run, the pump 50 commences and liquid thereby forced into the spaces 25 acts on partitions 26 to pressurize the pneumatic space 24. The plungers 28, with pistons 31, then move apart, and pressure acting on the piston 62 (of valve assembly 53) is relieved. Compression damping is afforded by a valve assembly 68 and rebound damping by a valve assembly 70. A solenoid 69 may be operated to increase the damping of the assembly 68. A supplementary hydraulic accumulator 72, embodying an air spring, may be normally isolated from the system, but may be cut in when the volume in the space 24 is reduced below a predetermined minimum. In a modification, (Figs. 6 and 7, not shown), the partitions 26 are replaced by a flexible bag form of air spting.
Patent GB-861512-A (GB)
Title: Improvements in or relating to the vacuum forming of synthetic resin materials
Inventor: HILL ALAN CHARLES
IPC: B29C51/32
Filed: 1958-10-22
Abstract: 861,512. Switch covers. PRESSED STEEL CO. Ltd. Dec. 3, 1959 [Oct. 22, 1958], No. 33728/58. Class 38 (5). [Also in Group V] A switch-box cover 11 of plastic material having side-walls 12, 13, 14, 15, a back wall 16, and a rim 17, is produced by a vacuum-forming operation between dies carrying complementary knife-edge parts which form sharp depressions 18, 19 which are later cut around with a penknife to produce cut-outs a to permit the passage of electric cables.
Patent GB-619240-A (GB)
Title: Improvements in or relating to picture frames or the like
IPC: A47G1/00
Filed: 1946-11-14
Abstract: 619,240. Flower vases. BARRINGTON, W. J. Nov. 14, 1946, No. 33830. [Class 128] [Also in Group XV] A flower vase 4 for attaching to a picture-frame, etc. is made of wood, plaster-board, pressed steel, plastic, china, or ceramic or cementitious material and has a flat rear face and a hook 4b engaging a slot 16 ; alternatively a hook on the frame engages a slot in the vase.
Patent GB-1270687-A (GB)
Title: Improvements in or relating to a process for the preparation of a porous plastics material and the product resulting therefrom
IPC: C08J9/26
Filed: 1969-07-04
Abstract: 1,270,687. Porous plastics materials. ETABS. PENNEL & FLIPO. 4 July, 1969 [22 July, 1968], No. 33835/69. Headings C3C and C3R. Porous plastics materials are prepared by mixing, in any order, a polymer capable of forming hydrogen bonds between its molecules, a liquid which is at least partially non-miscible with the polymer, and an organic acid salt metal capable of forming a gel with the liquid under the mixing conditions and removing the liquid. The polymer is one which preferably contains amino, hydroxy, keto, carbaldehyde, amido, carbamido, allophanate, carboxy and/or most preferably urethano groups. The organic  acid salt is suitably a metal salt of an acid of the formula R(COOH) n  where n is an integer and R is a hydrocarbon radical containing at least 4 and preferably 6 to 20 carbon atoms. Salts of acids containing the stearyl, octyl or lauryl sarcosinyl radicals are particularly useful. Hydrocarbons and in particular paraffins are suitable as the non-miscible liquid. The organic acid salt preferably represents 10 to 30% of the weight of the non-miscible phase and the non- miscible liquid and the organic acid salt preferably represent 50 to 100% of the weight of the polymer. The organic acid salt and the non- miscible liquid may be premixed to form a gel which may be mechanically divided and introduced into the polymer. Removal of the non- miscible liquid may be carried out by solubilisation, evaporation or washing of the product. The polymer may be used in the form of a solution in an organic solvent or may be composed of reactive molecules capable of forming the final polymer.
Patent GB-1312992-A (GB)
Title: Automatic cooking cycle control system for microwave ovens
IPC: H05B6/68
Filed: 1970-07-14
Abstract: 1312992 Programmed control BOWMAR/TIC Inc 14 July 1970 [24 July 1969] 34013/70 Heading G3N [Also in Divisions H2 H4 and H5] A micro-wave oven comprises a magnetron 30 for supplying micro-wave energy, a network 40 for controlling the operation of the magnetron according to a selected one of a number of modes of operation and program input apparatus 42 for selecting the desired sequence of operations of the magnetron. The network 40 comprises a timing network 52 consisting of a number of motor driven time switches and relay circuits 54, 56 connected to a switching network 18 controlling conventional heater elements 12, 14 and a micro-wave power control network 32 respectively. In one form the input apparatus comprises push buttons 45-49, each of which selects a different cooking cycle such as "thaw", "bake", "roast" "crisp" or "broil" during which the thermal and micro-wave heating is switched on according to the selected cycle and for a total cooking time set by a selector 50. Antennas 20, 22 radiate the microwave energy in the oven and cooling air is blown over the magnetron and into the oven from a source 60. Holes in the top of the oven allow passage for the cooling air. A thermostat 58 is connected to the network 40 and enables the oven to be initially heated by one of the heaters 12, 14 until a predetermined temperature is reached whereupon the network 40 then controls the periods of time in a selected cooking cycle for which the micro-wave and thermal heating is switched on. An alarm 59 signals the end of a cooking cycle. The input apparatus 42 may comprise magnetic, punched or embossed card readers and in a modification the micro-wave antennas also act as the thermal heating elements.
Patent GB-1121834-A (GB)
Title: Improvements in and relating to bimetal-controlled instruments
IPC: H01H37/52
Filed: 1965-08-09
Abstract: 1,121,834. Temperature responsive actuating elements. DANFOSS A. S. Aug. 9, 1965 [Aug. 7, 1964], No.34077/65. Heading G1D. [Also in Division H1] A switch-controlling bi-metallic strip 7 is shaped as a double hairpin forming a loop (see also Figs. 3-5 not shown) so as to be ambient temperature compensated, the strip 7 being fixed at one end 13 and having a laterally displaced free end 14 Fig. 2 (not shown) which is movable in a direction normal to the strip surface to cause actuation of a switch when the strip 7 is heated by a resistor 15 in the bend 11 near its fixed end 13. Changes in ambient temperature only cause negligible movement of free end 14 Figs.4,5 (not shown), the legs 8 and 9 of strip 7 bending out opposingly. Movement of free end 14 when heated by resistor 15 releases arm 16 of a spring biased lever 17 pivoted at 18, lever 17 then actuating a contact spring-set 20, 21, 22, via an insulating plate 19. The switch is reset via a stem 26, which returns lever 17 to its original position, and which lifts contact member 22 directly and moves support member 2 of the bi-metallic strip 7 via an adjustment screw 31 to vary the reset time. Support member 2 is pivoted at 3 and is rotatable by an adjustment screw 5 to vary the height of the free end 14 of the strip 7 supported on member 2, thus setting the operating temperature.
Patent GB-998346-A (GB)
Title: Improvements relating to book ends
IPC: A47B65/00
Filed: 1963-08-28
Abstract: 998,346. Book ends. D. M. JAMES. June 16, 1964 [Aug. 28, 1963], No. 34111/63. Heading A4U. A sheet metal book end has a flat base 1 for projecting beneath a row of books, a flat upstanding support portion 2 and means 3 arranged on the support portion 2 to hook around and hold closed the cover of an end book which is arranged to enclose the support portion between its leaves or covers. The means 3 may, as shown, comprise a bent back channel or alternatively may comprise a spring clip. Protection rubber or like layers 4 or strips may be attached to the undersurface of the base.
Patent GB-192254-A (GB)
Title: A new or improved annealing stand
IPC: C21D9/00
Filed: 1921-12-19
Abstract: 192,254. Clement, W. E., and Thomas & Clement, Ltd. Dec. 19, 1921. Annealing-boxes. - An annealing-stand A is provided with supporting - elements B which consist of transverse ridges pressed out from the metal of which the stand is made.