baber/WOPTO huggingface dataset:
Patent GB-1525324-A (GB)
Title: Battery saver circuit for use with personalised radio apparatus
IPC: G08B3/10
Filed: 1976-05-24
Abstract: 1525324 Selective signalling MOTOROLA Inc 24 May 1976 [26 June 1975] 21457/76 Heading G4H A battery saver circuit for use with personalized radio apparatus powers receiver means to look for a first signal for a first time duration and in response to detecting it powers the receiver means to look for a second signal for a second, shorter, time duration. A plurality of personal paging receivers can be called up by radio by sending a sequence of tones (modulated on to a carrier), the sequence consisting of a long first (preamble) tone common to the plurality (though not in general to other receivers) followed by a gap followed by, for each receiver in turn, 2nd-6th tones and the presence or absence of a longish additional tone. In each receiver, the sequence is demodulated and fed to a switchable tone filter and detector which is controlled to look for the preamble tone. If this is detected three times, the remaining tones appropriate to the receiver are looked for in turn but if one is not detected, the receiver returns to looking for the second tone. If all the tones, with the possible exception of the additional tone, are detected, an audible alert signal is generated, having one of two frequencies according to the presence or absence of the additional tone. Detect time windows for the tones have durations according to: "preamble" greater than "additional" greater than each of the others. Power (battery) is switched to the (demodulator) receiver circuits prior to the filter and to the filter and detector during spaced time periods only, until the preamble tone is detected when the period is repeatedly extended with each detection until following the third detection it is extended sufficiently to consider the first two "second" tones and on detecting the relevant "second" tone is extended further by a duration sufficient to extend over the next two "second" tones.
Patent GB-627574-A (GB)
Title: Improvements in water boilers and heaters
IPC: A47J27/08
Filed: 1947-08-15
Abstract: 627,574. Band clips. STOTT & CO. (ENGINEERS), Ltd., J., and STOTT, R. E. Aug. 15, 1947, No. 21463/46. [Class 44] [Also in Group XIII] In a hot water boiler of the type having co-axial and aligned tubular parts 1, 2 with an inner tubular member b<SP>1</SP> within one of such parts, the said coaxial parts are provided externally with jointing rings a, b one of which is formed so as to locate and support the inner tubular member b<SP>1</SP>. The complementary flanges of the rings are embraced by a plurality of elements c each having a wedge-shaped groove c<SP>2</SP> adapted to receive and engage said flanges, the elements forming a ring and means being provided for drawing them together. In one form the clamping ring comprises two semi-circular parts hinged together at one end and drawn together at the other end by a bolt which either passes through a lug in each part or is pivoted in one part and engages a forked lug on the other. The elements of the clamping, ring may alternatively be embraced and held together by a chain having a turn-buckle for drawing its ends together. The chain is located in an external groove formed in the ring elements and may be covered by a masking ring. The outer faces of the flanged rings a, b may be inclined as shown or they may be parallel.
Patent GB-153717-A (GB)
Title: Improvements in machines for cutting and shaping hat sweatbands or other leathers
IPC: C14B5/00
Filed: 1919-09-03
Abstract: 153,717. Ruttenau, W., Hahlo, C., and Ruttenau, S. W., (trading as Ruttenau & Co., W.). Sept. 3, 1919. Traversing-cutter type for cutting rectilinearly. -Relates to a machine for cutting hat sweatbands and similar bands either straight in shape or curved somewhat as required. A head is intermittently brought down on the leather or fabric to be cut and a knife carried by an endless band passes along a slot formed partly in the head and partly in the table to sever the material. The width of the strip cut is determined by a fence, and after each cut a flap beneath the table opens and allows the strip to fall down a delivery shoot. The timing of the head and flap is controlled by cams. The drive is frictional and the machine can be stopped by foot mechanism which separates the friction wheels by swinging one of the bearings of the main shaft out of its driving position. The head b with slot c<1> co-operating with a slot formed by the edge of a flap d, which, in the cutting position, bears against the underside of the table, normally presses on the material to be cut, but is lifted after each cut by the rod q, lever p<1>, cam-disk o<1> and worm n' on the spindle n driven by friction wheels j, j<1>. When the cams o<2> rock the lever p<1> to raise the head, the link r rocks the flap d, which then allows the cut strip to fall. The knives m are carried by the chain l which passes round pulleys k, k<1>, k<2>, k<3>. The tension of the chain is controlled by set-screws l<1>. The pulleys k, k<1>, have lateral play to allow the knife to follow the slot when this is curved. The fence e can be adjusted by rack-and-pinion mechanism, a pointer moving over a scale enabling it to be set with accuracy. The friction pinion j is driven by fast and loose pulley mechanism and can be withdrawn from contact with the pinion j<1> by the foot lever s which rocks the bell-crank lever t<3>, the upper arm of which carries the inner bearing of the shaft h<2>.
Patent GB-1267994-A (GB)
Title: Carbon fibre products and production thereof
Inventor: OTANI SUGIO
IPC: D01F9/21
Filed: 1969-04-29
Abstract: 1,267,994. Spinning yarns. KUREHA KAGAKU KOGYO K.K. 29 April, 1969 [30 April, 1968], No. 21684/69. Heading D1F. [Also in Division Cl] A twisted carbon yarn is produced by twisting carbon fibres together, holding the twisted yarn while subjecting it to a temperature of at least 100‹C higher than the temperature used to carbonise the fibres in a non-oxidising atmosphere. A suitable atmosphere is nitrogen and the fibres may be heated up to 1000‹C above the carbonising temperature.
Patent GB-840839-A (GB)
Title: Improvements in and relating to moulds for the manufacture of shoes
Inventor: SCHLEICHER HANS PREM AND ERNST
IPC: B29D35/00
Filed: 1958-07-07
Abstract: 840,839. Moulding footwear. SCHNEIDER G.m.b.H., J. & C. A. July 7, 1958, No. 21692/58. Class 87(2). On a base plate a is arranged a frame b which has a rounded profile on the inside which merges at the top into a sealing nose b<SP>1</SP> and at the bottom has a vertical edge b<SP>2</SP>. This vertical edge b<SP>2</SP> surrounds an outer pre-formed sole c lying on the base plate a for part of, e.g. the lower half of two-thirds, of the thickness of the same whilst the upper half of the sole c is surrounded by a rubber mixture d. An insulating layer of felt e may be provided and the mould is closed by a last h carrying an insole f and an upper g. The mould is heated to vulcanise the rubber mixture.
Patent GB-261318-A (GB)
Title: Improvements in or relating to cylinders for internal combustion engines
IPC: F02F1/04
Filed: 1926-09-03
Abstract: 261,318. Napier & Son, Ltd., D., and Hutchinson, R. Sept. 3, 1926. Addition to 194,855. Cylinders, mounting heads of.-A conical ring D, which, according to the parent Specification, clamps together a cylinder barrel A and its head B which are made of dissimilar metals, is fixed to the head B by bolts E or set screws screwed into the ring. The ring and the barrel are made of metals having approximately the same coefficient of expansion. The bolts E may be vertical or inclined as shown, and are preferably made of a metal having a lower coefficient of expansion than that of the head; bosses B<2> may be separate from and have a higher coefficient of expansion than the head.
Patent GB-588292-A (GB)
Title: Improvements relating to wide frequency band radio amplifiers
IPC: H03F3/54
Filed: 1943-12-28
Abstract: 588,292. Electric impedance networks ; thermionic valves. STANDARD TELEPHONES & CABLES, Ltd., and MONTGOMERY, W. A. Dec. 28, 1943, No. 21765. [Classes 39 (i), 40 (iii) and 40 (v)] An impedance-transforming filter is designed for coupling, particularly at ultra - high - frequencies, a pair of valves having earthed grids and consequently low input impedances, the capacitances of the valves being taken into account and their impedances matched by the filter at the geometrical mid-band frequency. Coaxial resonators may be used as inductance elements in the filter, which may terminate in shunt trimming condensers. The valves may be of the kind having parallel plane electrodes and described in Specifications 585,448, 585,449, 585,450 and 585,456. The network is taken to include the valve capacitances as terminal shunt arms C2, C3, Fig. 5, but these arms may be adjustable by means of trimming condensers Qt, Qi, Fig. 7. The arms are calculated by means of known formulae so that the image admittances of the network match the real parts of the valve admittances at the geometrical mid-band frequency. In a modification in which the inductance L8 is infinite, an asymmetrical pi-section comprising the elements Ct, Qt, L5, L7, Qi, Ci, Fig. 6 (not shown), and Fig. 7, is designed to be equivalent to a symmetrical pi-section together with a step-down transformer. The delta L8, L5, L7, Fig. 5, may be replaced by star-derived meshes. Mutual inductance between the elements L5, L7 is prevented by forming the latter as coils at right angles to one another. The heater chokes Lh may be open-wound solenoids and each byepass condenser K may comprise a small plate fixed to but insulated from the screen of the amplifier. An alternative impedance-transformer comprises a simple transformer whose windings are shunted by the capacitances Ct, Qt, Ci, Qi, Fig. 9 (not shown). The inductance elements shown in Fig. 5 may be composed, Fig. 10, of short lengths of coaxial line as described in Specification 541,634, and the valves and condensers may be located inside the outer conductor 1. Each grid may comprise a perforated partition across the latter. The anode of valve V1 is connected to the cathode of valve V2 by the inner conductor 2 which is divided at the centre by a blocking- condenser H and constitutes the inductance L5. The anode supply for valve V1 passes through the inner conductor of a branch coaxial pair 3, 5 which forms the inductance L8, Fig. 5, while a plate 6 forms with the end of the outer conductor 3 a byepass conductor. A branch coaxial pair 4, 7 forms the output shunt inductance L7, and the heater supply enters through the inner conductor 7 and returns through a lead 8 inside the latter. Several pairs of valves may be similarly housed in the tube 1. A coaxial system analogous to the circuit shown in Fig. 7 is described with reference to Fig. 11 (not shown).
Patent GB-1202753-A (GB)
Title: Pyrophoric lighters
Inventor: KARRAN FREDERICK JAMES
IPC: F23Q2/10
Filed: 1968-05-08
Abstract: 1,202,753. Lighter flints. ALFRED DUNHILL Ltd. 8 Aug., 1969 [8 May, 1968], No. 21793/68. Heading F4F. In a pyrophoric lighter a disc of cerium or other suitable spark producing material is mounted for rotation by the actuating mechanism of the lighter, and a stationary striker element of hard metal is spring-urged into rubbing engagement with the disc so that as the latter is rotated a spark will be produced to ignite a wick or gas jet.
Patent GB-678092-A (GB)
Title: Improvements in or relating to adjustable mechanisms
IPC: B65B59/00
Filed: 1949-08-23
Abstract: 678,092. Wrapping-machines. MASON, J. A., and MOLINS MACHINE CO., Ltd. Aug. 22, 1950 [Aug. 23, 1949], No. 21862/49. Class 94(i) In a wrapping machine, partially-wrapped cigarette cartons are delivered by a conveyer (not shown) on to a lifting platform 4 comprising two parts 5, 6 each carrying part of a folder member 7 which folds up an extending portion of the wrapper when the platform rises. The part 6 is adjustable towards and away from the part 5 to accommodate cartons of different sizes, and the parts 8 and 9 of the member 7 are bridged by a slidable plate, see Fig. 2 (not shown), so that the member presents an unbroken upper edge. The part 5 is carried by a support 18 mounted on pivoted arms 20 and 21, and the part 6 by a support 19 mounted on pivoted arms 22 and 23, the arm 20 being secured to a hollow shaft 24 and the arm 22 to a shaft 25 which is slidable within the shaft 24 and coupled thereto by a key 26. The arms 23 and 21 are secured to stub shafts 27. A cam 28 is secured to a hollow shaft 29 driven through gearing from the main drive of the machine and co-operates with a roller 33 on the arm 20 to raise the platform at intervals. A shaft 30 slidable within the shaft 29 and coupled thereto by a key 32 carries a cam 31 which co-operates with a roller 34 on an extension 35 of the arm 22 to lower the platform to its original position after each rising movement. The arrangement of the shafts 24, 25 and 29, 30 allows the part 6 and associated mechanism to be adjusted bodily towards and away from the part 5 and its associated mechanism. Specifications 259,094, [Class 94(i)], and 617,125 are referred to in the Provisional Specification.
Patent GB-235059-A (GB)
Title: A shaving kit
IPC: A45D27/22
Filed: 1924-09-17
Abstract: 235,059. Qualls, F. A. Sept. 17, 1924. Shaving-appliances. - A combination shaving outfit consists of a brush 1 mounted in a base having a central knurled section 3 with threaded sections 4, 5 on each side; a tubular casing 6 having a screw-cap 7 at one end provided with means for holding a stick of shaving soap or a can of powder and adapted to be screwed on to the threaded section 4 of the base of the brush; and a tubular section 8 with an internal thread at one end, by means of which it may be screwed to the threaded section 5 of the base of the brush, and with threads 9 at its outer end by means of which a section 20 having a removable cap 21 and intended to hold a razor 22 may be screwed to the section 8. The cap 7 of the casing 6 is preferably provided with a sleeve 10 having a roughened inner surface by which a stick of soap or a can of powder 12 may be held. The cap 7 may be perforated and provided with a rotatable perforated disc 14 pivoted thereto.
Patent GB-705318-A (GB)
Title: Improvements relating to sterols and sterol esters of the cyclopentanodimethylpolyhydrophenanthrene series
IPC: C07J75/00
Filed: 1951-09-19
Abstract: Sterols and sterol esters having the formula <FORM:0705318/IV(b)/1> are obtained by heating the corresponding D 5,7 -pregnadienes with mercuric acetate and acetic acid in the presence of a lower aliphatic alcohol containing from 1 to 6 carbon atoms per molecule, separating the product, and if desired hydrolyzing any ester groups in the 3 and/or 21 positions.  The reaction may be effected at 50-125 DEG C. In the above formula, R is hydrogen or an acyl or aroyl radical, R1 is hydrogen or a hydroxyl radical and R11 is hydrogen, hydroxyl or an acyloxy radical.
Patent GB-1449356-A (GB)
Title: Ventilation of sinter machines developing and fixing device for an electrostatic copyingppar  apparatus
IPC: C22B1/02
Filed: 1974-05-17
Abstract: 1449356 Air curtains; sintering machines ISC SMELTING Ltd 6 May 1975 [17 May 1974] 22001/74 Heading F4B In a sinter machine used for sinter roasting sulphidic ores, such as lead or zinc sulphides and comprising a moving sinter strand 1, a sinter gas collection hood 3 and a ventilation hood 4 covering the discharge end of the machine, the sinter gas and ventilation gas are kept separate by means of one or more air curtains provided between the hoods 3 and 4. The curtains can be formed by blowing air downwardly through longitudinal slits in pipes 6 running across the width of the machine. Since suction is higher in the ventilation hood 4 than it is in collector hood 3, the gas from the air curtains tends to be sucked into the hood 4 from where it can be recirculated or cleaned before being discharged to atmosphere.
Patent GB-531714-A (GB)
Title: Improvements in and relating to boots or shoes with ventilated soles
IPC: A43B7/06
Filed: 1939-07-29
Abstract: 531,714. Ventilating boots. CARRARO, A. July 29, 1939, No. 22103. Convention date, Aug. 16, 1938. [Class 17 (ii)] A boot is provided with a perforated insole 4 beneath which are arranged conduits 2 open at the top and of substantially square section, and housing resilient brass spirals 6 to prevent the flattening of the conduits under pressure. These conduits lead to a rigid walled chamber 7 connected to a conduit 8 which houses a similar spiral 9 and is connected to a plate 10, perforated at 11 to receive a closing plug. A suitable filter may be arranged in the conduit 8.
Patent GB-399959-A (GB)
Title: Carburettors
IPC: F02M3/055
Filed: 1932-08-06
Abstract: 399,959. Spray carburetters. AMAL, Ltd. and BROWN, C., Holford Drive, Perry Barr, Birmingham. Aug. 6, 1932, No. 22109. [Class 7 (iii).] A suction - actuated piston 2 or the equivalent controls the admission of air into the main fuel jet system 13 of a carburetter when the depression in the induction pipe exceeds a predetermined amount, and at a predetermined greater depression air is admitted into the fuel passage for use during slow running. The depression in the induction pipe 5 above the throttle valve 6 is communicated to the underside of the piston 2 through a passage 7, to open a spring-pressed valve 9 which controls the admission of air from a port 12 to the main fuel jet. A sliding sleeve 16 is attached to the stem of the valve 9 and when the higher depression value is attained it depresses a sleeve valve 17 to permit air to pass from a port 20 through a passage 21 to the slow running fuel passage 14.
Patent GB-531715-A (GB)
Title: Improvements in drying and airing racks
IPC: D06F57/04
Filed: 1939-07-31
Abstract: 531,715. Clothes sirers. DONSON, E. H. July 31, 1939, No. 22116. [Class 52 (v)] A clothes airer comprises a hollow upright C for housing the arms A when not in use, feet F which may be folded along the upright C and arms A which, when removed from the upright, may be inserted horizontally in sockets S.
Patent GB-1103176-A (GB)
Title: Railway vehicle truck
IPC: B61F5/30
Filed: 1966-05-18
Abstract: 1,103,176. Springs. MIDLAND-ROSS CORPORATION. 18 May, 1966 [24 May, 1965], No. 22130/66. Heading F2S. [Also in Division B7] Relates to spring units 145, 160, Fig. 3, for supporting a bogie pedestal frame 5, from a saddle 6 carrying an axle journal bearing (see Division B7). Each spring unit 145 or 160 comprises a pair of concentric helical compression springs 146, 147, Fig. 4, each having a free height less than the distance between upper and lower opening seats 137 or 25 and 71, under no-load conditions. The inner spring 146 is longer and stronger than the more flexible short outer spring 147. The lower end of the spring 146 rests on the bottom of a load-transferring cup-shaped member 150 and the latter has an upper outwardly extending annular flange 154 supported on the top of the spring 147. The depth of the cup is greater than the solid height of the spring 147. Such an arrangement provides a variable spring rate characteristic, the lower spring 147 providing the required soft riding characteristic under light loads and the upper spring 146 providing sufficient capacity for fully loaded vehicle conditions.
Patent GB-1120608-A (GB)
Title: Improvements in or relating to land mines
IPC: F42B23/00
Filed: 1966-07-18
Abstract: 1,120,608. Land-mines. INDUSTRIE WERKE KARLSRUHE A.G. 19 May, 1966 [19 June, 1965], No. 22238/66. Addition to 1,005,388. Heading F3A.  A land-mine of the type described in parent Specification 1,005,388, wherein the arming member is formed from a screw cap 10a, Fig. 1, and a longitudinally displaceable slider member 10b on which acts a coiled pressure spring 10c, covered by a sealing diaphragm 10e, which is held under stress by a safety pin lOd. The arming member is flush with the surface of the pressure cover 3 and a diaphragm sealing element 5a is provided between the outer resilient ring body 5 and the mine casing 1. Lateral displacement of pressure cover 3, as the mine strikes the ground, is prevented by the raised edge la, which is strengthened with a ring 1b. On withdrawing the safety pin 10d the slider member 10b moves downwardly, under the action of spring 10c, to a stop 10g where it is retained by a spring ring 10h catching into a groove 10i Meanwhile the pressure ball 11a, Fig. 3, is trapped in the recess 10f and is moved downwardly through a definite amount in conjunction with slider sleeve 11. The motion is transmitted to striker pin 13 through the partly cylindrical locking elements 14. The clookwork mechanism 18 then rotates sleeves 19 and 23 and locking balls 25a enter the recesses (23b), Fig. 4 (not shown), in sleeve 23. Sleeve 26 is thus released and moves downwards under the action of spring 16 to produce a recess between the lower and upper edges of shoulder 44 and sleeve 23 respectively. The mine is now armed and the locking elements 14 are adapted to be displaced and slide into the recesses 43/44 to free the pin on application of further pressure to ball 11a. Undesired detonation is prevented by a safety pin 39. The clockwork fuse 18 may again be loaded by rotating the shaft 19 by means of a coin inserted in a slot 14. Protection against removal of the detonator by unscrewing cover 10e is provided by removing screws 45 to free a slider ring 43. If the cover is now removed, spring 16 lifts the sleeve 46 and a rubber ring 47 lifts the slider ring 43 away from the collar 44. The cylinder 14, lifted from the collar 44, then expands into the gap 43/44 to free the striker pin and detonate the mine. A screw cover 1d of synthetic material having a m.p.of, for example, 120 C. which is below the detonation point of the explosive filling the mine is fitted to the bottom of the mine.
Patent GB-1072784-A (GB)
Title: Electrically actuated squibs
Inventor: TURNER GEORGE GARNHAM
IPC: F42B3/12
Filed: 1964-05-29
Abstract: 1,072,784. Gas generators. HI-SHEAR CORPORATION. May 29, 1964, No. 22260/64. Heading F3A. An electrically actuated squib comprises a hollow body (10) open at two places with an insulating plug (20) at one opening carrying electrical conductors (25-27) leading to bridgewires (34, 35) positioned in a first charge (48) which is held in a tapered ring (42) secured to the body and separated from a second charge (60) by an insulating barrier (51), there being a flash barrier (63) adjacent the second charge on the side opposite to the first charge, and the second opening being hermetically sealed by a rupturable closure plate (65) welded to the body. The body has threads (12) for mounting the squib and a recess (13) for receiving a plug to supply current to the conductors which are set in the ceramic plug (20) by means of glass beads (32) and spot-welded to the bridgewires (34, 35) in contact with the first charge (48) which consists of an initiator portion (49) and a sustainer portion (50) compressed into the tapered retainer ring (42) joined to the body (10) and plug (20) by cement (19). The laminated insulating barrier (51) is cemented to the retainer ring (42) and contacts the second charge (60) comprising a tightly compressed portion (61) and a less compacted portion (62), the charge being enclosed by a flash barrier (63) identical with the barrier (51). A resilient ring (64) is placed on the flash barrier (63) and held by the closure plate (65) which is spot-welded to a lip (67) in a counter bore (66) in the body. A washer (69) is positioned next to the closure plate (65) and the end of the body is formed into a crimp (71). The closure plate (65) has a cruciform shaped area (68) of reduced thickness which ruptures after ignition. Closure of the opening with the conductors is accomplished by use of a resin (72). The plug (20) may be of 94-99À5% pure alumina and the conductors gold plated.