baber/WOPTO huggingface dataset:
Patent GB-1286642-A (GB)
Title: Photographic flashlight device
Inventor: BEACH DAVID EASTON
IPC: G03B15/04
Filed: 1969-10-14
Abstract: 1286642 Photographic apparatus EASTMAN KODAK CO 14 Oct 1969 [14 Oct 1968] 50434/69 Heading G2A A photographic flash-light device, as shown a camera, comprises a rotatable socket 8 for receiving a percussion ignitable flash-lamp unit 10, a striker 34 for striking a primer 12 of a received unit 10, and drive means which, as a result of release of the striker 28 to strike the primer 12, will automatically recock the striker. In use, a camera release button (64) Fig.1 (not shown) is depressed, thereby allowing a shutter lever (62) to release a spring tensioned shutter blade driving arm (84), which in turn strikes a shutter blade (72) and drives it through aperture open and closed positions to make an exposure. Movement of the shutter lever (62) also releases a latch lever 50, thereby releasing the end 34 of the spring 28 to allow it to ignite a flash-lamp (14). By virtue of a lost motion coupling 54, 56, 58 between the latch lever 50 and a lever 44, the flashlamp (14) is ignited before the lever 44 is withdrawn from contact with the shoulder 42 of a control cam 40. Thus a drive motor (22), also employed to cock the shutter and advance the film, can rotate gear 18 through 360 degrees. The gearing is such that, for this rotation, gear 24, associated with the socket 8, only rotates through 90 degrees During the revolution of the gear 18, the end 34 of the spring 28 is again engaged by the latch lever 50, the last 135 degrees of rotation of the gear 18 resulting in the spring 28 being energized.
Patent GB-1099053-A (GB)
Title: Methods for changing relative positions of movable conductors for use in electrical inductive devices
IPC: H02K15/06
Filed: 1965-11-30
Abstract: 1,099,053. Electromagnetic forming of coils. GENERAL ELECTRIC CO. Nov. 30, 1965 [Nov. 30, 1964], No. 50842/65. Headings B3A and B3Q. In a method of changing a loose electrical coil 55 into a desired configuration, the coil turns are arranged close to non-magnetic electrically conductive material and at least one surge of current of predetermined magnitude is passed through the coil to effect the change. The coil 55 which is of annular configuration and circular cross-section, is placed over non-magnetic and electrically conductive elements 58, 59 which are connected by a ferromagnetic element 63. The coil is surrounded by non-magnetic and electrically conductive elements 64, 65 and ferromagnetic elements 68, 69. An energy surge source 50 is connected to the coil and when actuated a large current surge is generated in the coil thereby establishing transient eddy current flow in non-magnetic elements 58, 59, 64, 65, so as to create opposing electromagnetic fields of flux thereat. Hence coil sections 55a, 55b, 55c, 55d are repelled by elements 58, 59, 64, 65 respectively and the coil is formed into an elongated configuration (Fig. 6, not shown), this movement being assisted by the magnetic attraction of elements 63, 68, 69. Alternatively, a loosely wound annular coil may be compacted by being placed over a non-magnetic cylinder and enclosed in a rectangular box of magnetic material and non-magnetic lid. Stator windings may be similarly compacted by placing a copper or aluminium cylinder 101 inside a wound stator and passing a series of current surges through the winding, the coil taking up positions A, B, C after each successive surge. Additional compaction may be achieved by placing a non- magnetic sleeve over the end turns of the windings. Armature windings may be compacted by placing a non-magnetic sleeve over the windings and passing a current surge therethrough.
Patent GB-1472906-A (GB)
Title: Electromagnetic focal plane shutter
IPC: G03B9/42
Filed: 1974-11-26
Abstract: 1472906 Focal plane shutters FUJI PHOTO FILM CO Ltd and T KONDO 26 Nov 1974 [27 Nov 1973] 51184/74 Heading G2A [Also in Division H2] A focal plane shutter comprises two blinds which are traversed across an aperture by linear electromagnetic motors. Linear Drive. As shown in Fig. 5 a series of coils L1-L10 are arranged along the path of each blind (only one series shown). Each blind carries a magnet with N and S lobes 16a, 16b facing the coils. Brushes 74, 75 contact bus-bars 76, 77 to supply power to contact pads S1-S10 to which ends of respective coils are connected. All coils are connected at their opposite ends to a common wire 62. When current is supplied to the bus-bars it flows through brush 74 and coil L1 (to establish a S pole ahead of lobe 16a) and returns through coil L4 (to establish a N pole ahead of lobe 16b). The magnet 16 therefore drives the shutter blade in the direction of the arrow, the coils being energized in sequence by the travelling brushes. The coils L1-L10 may be printed and may overlap, and the magnets 16 may be permanent or electromagnetic. The coils L1-L10 may be provided on the blind and the magnets 16 on the camera body. Shutter construction. As shown in side elevation in Fig. 9A an aperture plate 51 has a blind on each side. Each blind comprises two blades 10-20, 30-40, the width of the aperture-obscuring part of each blade being just over half the width of the aperture, such that blades 30-40 are telescoped to one side of the aperture, and blades 10-20 are extended to cover the aperture. On depressing the shutter release the linear motor (see above) for the upper blind drives blade 10 to the right. When the aperture is half open abutments 14-24, 15-25, come into contact as the blades concertina, so that the overlapped blades travel together to completely open the aperture. After a timed interval (see below) the linear motor for the lower blind moves blade 30 to the right. When the aperture is half abscured abutments 35-44 meet as the shutter extends so that blade 40 is dragged extended behind blade 30 to abscure the aperture. Subsequently the motor for the top blind is reversed to return it to the position shown in Fig. 9A, and the bottom blind is then returned. Shutter control. The circuit Fig. 8 (not shown) normally has S 1 , S 3  closed. The shutter release closes switch 7 to energize linear motor M2, top blind Fig. 9A. The opening shutter admits light to photo-cell P which subsequently switches on transistors T 1 -T 3  to energize linear motor M1, lower blind Fig. 9A. Completion of the lower blind movement operates switch S6 to energize relay M3 whereupon S 1  and S 3  open, S 2  closes, and S 4 , S 5  reverses the polarity to motors M1, M2 to restore or cock the shutter.
Patent GB-1096689-A (GB)
Title: Method and apparatus for slow pouring and casting metals
IPC: B22D17/14
Filed: 1964-12-16
Abstract: <PICT:1096689/C6-C7/1> A steel contains 0.22 C, 0.22 Mn, 0.007 P, 0.013 S, 0.025 Si, 1.56 Cr, 3.15 Ni, 0.37 Mo, 0.14 Cu, 0.04 V, 0.007 Al and has a low gas content of 12 ppm oxygen, 41 ppm nitrogen and 1 ppm hydrogen.  In molten state it passes from a funnel 13 into a heated, evacuated ladle 26 to fragment and degas before passing to mould 58 for continuous casting (see Division B3) in a bell cover 43 which is evacuated or contains a non-oxidizing gas.  A fusible diaphragm 45 initially seals the ladle 26. The top of the metal in the mould 58 is heated by heater bars 80 or electron guns.
Patent GB-513056-A (GB)
Abstract: 513,056. Counting-apparatus. FISHBURN, J. E., and DEGEN, A. A. C. Feb. 24, 1938, No. 5815. [Class 106 (i)] Multiple bets, e.g., 10s. bets, are registered on the units (2s.) wheel by means of a rack operated by an electromagnet energized by a single impulse. The rack 37 forms part of a frame 36 swivelled on a rod 34 extending from the armature of the electromagnet 32 and urged by a spring 39 into mesh with the units wheel 11. A stop limits the throw and reversal of the wheel is prevented by a pawl 28. Single bets of 2s. are registered by an electromagnet 13 the armature of which rocks a frame 16 pivoted at 17 and carrying a spring-urged actuating pawl 18. Overthrow is prevented by a pawl 24 drawn by spring 27 into engagement with the wheel but normally held off by a screw-stop 25 bearing on the lever 16. According to the Provisional Specification a rack is driven by an electromagnet but its travel is limited by a number of stops any one of which may be caused to arrest the rack to register the required number of units.
Patent GB-1535176-A (GB)
Title: Bar display with alarm indication
IPC: G01R13/40
Filed: 1975-11-26
Abstract: 1535176 Indicating measurement HONEYWELL Ltd 26 Nov 1975 [27 Nov 1974] 51326/74 Heading G1J [Also in Divisions G3 and H3] A bar display system for indicating as a bar of light the magnitude of a quantity represented by an electrical input signal includes circuitry to cause the entire display to periodically flash on and/or off when an alarm signal is received at 41. The system includes a bar display device 10 in the form of a flat bar-like gas-filled space having a transparent anode 11 on its inner front face and 200 equally spaced cathodes 12 on the back face, the cathodes being connected in three interdigitated sets 13, 14, 15. A clock signal generator 20 drives a display drive circuit 21 for energizing each set of cathodes in sequence. A "keep-alive" anode 18 and cathode 17, and a reset cathode 16 are provided at one end of the space. A ramp signal generator 30 driven by the clock signal generator 20 supplies a ramp signal to a comparator 31 where  it is compared with the input signal from 32. The comparator 31 feeds an anode drive circuit 33 which maintains the anode 11 energized while the ramp signal is less than the input signal, but deenergizes the anode when the ramp signal exceeds the input signal, to extinguish the visible discharge and give the bar of light a length proportional to the magnitude of the input signal. A divide-by-200 circuit 22 sends a reset pulse to the ramp signal generator 30 and the display drive circuit 21 once per 200 pulses from the clock signal generator 20. The alarm circuit comprises a counter 40 fed by the "divide-by-200" unit 22, and logic circuitry 42-46. The counter 40 works to a scale of 128, and has two outputs, one true for counts 1-16 and the other for counts 65-80. An alarm signal at 41 enables AND gates 42, 43. The first signal from counter 40 can then pass, via an inverter 44, to disable a normally enabled AND gate 45 to extinguish the display for 160 ms. Then the value of the input signal is displayed for 480 ms. The second signal from counter 40 then holds OR gate 46 enabled for 160 ms, to hold the display fully on for this period. Finally the input signal value is displayed for another 480 ms. This four-part cycle is repeated so long as the alarm signal continues at 41.
Patent GB-1491726-A (GB)
Title: Powder mixture for the production of alloy steel
IPC: B22F1/00
Filed: 1974-11-28
Abstract: 1491726 Sintered alloy steels HOGANAS AB 28 Nov 1974 [29 Nov 1973] 51685/74 Heading C7D A powder mixture which is pressed and sintered to form alloy steel articles consists of two powders, (1) an atomized pre-alloyed steel powder, and (2) a finely comminuted powder containing alloying elements, wherein powder (2) contains all of the alloying elements whose oxides have a free energy of formation (#G) of > 120 kcal/mole 02 at 1000C (e.g. Cr, Mn, Al, Ti, Si, V) and powder (1) contains substantially all of the alloying elements whose oxides have a #G < 120 kcal/mole 02 at 1000C (e.g. Cu, Mo, Ni, Co), the remainder (less than 0.4%) being contained in powder (2). The mixture preferably comprises 80-99 wt. per cent of powder (1) and 1-20 wt. per cent of powder (2). Powder (1) is preferably formed by wateratomization, and powder (2) by cooling and crushing a melt. Powder (2) may contain up to 10%C as alloying element, and up to 1% of graphite and/ or zinc stearate as lubricant. The Examples refer to sintering a mixture of a water-atomized Mo steel powder and a ferro alloy containing Mn and Cr (Example 1), and mixtures of a water-atomized steel containing Ni and Mo, and Fe-Cr (Example 2).
Patent GB-1387409-A (GB)
Title: Covers
IPC: B65D19/38
Filed: 1971-11-08
Abstract: 1387409 Load handling pallets AIRFLEX CONTAINERS Ltd and C D D HICKEY 3 Nov 1972 [8 Nov 1971] 51827/71 Headings B8H and B8C A cover for a load on a pallet comprises an envelope of flexible sheet material 10 with a peripheral lip with holes 14 therein, through which pins 13 pass for engagement with the pallet. A pair of straps 17 located in sleeves 18 serve to draw the cover about the load. In an alternative embodiment, Fig. 3 (not shown), the lip of the cover has a series of holes (21) to engage complementary pin (20a) on the side of the pallet.
Patent GB-1215471-A (GB)
Title: Method of making transparent panels
Inventor: PLUMAT EMILE
IPC: B32B27/00
Filed: 1967-11-14
Abstract: 1,215,471. Transparent laminates. GLAVERBEL. 14 Nov., 1967 [30 Dec., 1966], No. 51843/67. Heading B5N. [Also in Divisions B2, B7 and E1] A transparent panel-like article, e.g. a vehicle windscreen, is made by applying or connecting a transparent screen to a transparent panel, the resultant combination being less transparent in part of the ultra-violetvisible-infra-red spectrum than the panel alone, and then reducing but not completely eliminating the transparency attenuating effect of the screen in at least one zone of the article. The panel may be of glass and the screen in the form of a coating. The windscreen shown in Fig. 2 comprises glass layers 4 and 9 and layers 7a-7d of polyvinyl butyral. Layer 4 is coated with titanium oxide 5, this coating being semi-reflective and thus reducing the transparency of the laminate. At a zone 3, the windscreen is made more transparent than surrounding areas by coating the titanium oxide coating with silicon monoxide 10a, which is slightly light-absorptive, and by forming aperturees 11a and 12a in polyvinyl butyral layers 7e and 7d. These apertures may be filled with a material having particular optical properties, e.g. good transmission of yellow light. Apertures 11a and 11b are of different sizes to make the change in optical properties across the boundary of zone 3 more gradual. Zone 3 is elliptical and the windscreen may be formed with a further relatively transparent zone; (2) of circular form, but otherwise similar to zone 3, Fig. 1 (not shown). The windscreen shown in Fig. 4 comprises a layer of glass 21 coated with titanium 22. Zone 25, which is to be more transparent than the rest of the laminate, is then coated with a peelable varnish, the upper and lower parts of the windscreen being covered with masks at this time. The masks are then removed and coatings 23 and 24 are applied. Coating 23 reflects ultra-violet radiation and is composed of 70% TiO 2  and 30% Fe 2 O 3 . Coating 24 is of titanium oxide. On peeling the varnish from zone 25, some of the titanium coating 22 is peeled away therewith to leave a thinner and consequently more transparent coating in zone 25. Also, the thin titanium coating left in zone 25 is partly converted into titanium oxide, which reduces its reflective properties. A further glass sheet or a plastics sheet can be applied to the coated side of the windscreen. This further sheet may be spaced from the coated glass layer 21 to form a sealed doubleglazing unit. Zone 25 extends over the whole width of the windscreen, Fig. 3 (not shown).
Patent GB-1532479-A (GB)
Title: Explosive-powered fastener driving tool
IPC: B25C1/14
Filed: 1976-12-13
Abstract: 1532479 Fastener driving tool HILTI AG 13 Dec 1976 [24 Feb 1976] 51861/76 Heading B4C  An explosive powered fastener driving tool comprises an axially-displaceable barrel 2, a firing pin 7 which is cocked by pushing back the barrel against the force of a firing spring 8 and is released by rotation about its longitudinal axis by a lock bolt 11 which is actuated by a trigger 16, the firing pin having a radially projecting tab 7c and the lock bolt having a driving cam lie and a restoring cam 11d, the driving cam contacting the tab 7c only when the firing pin is cocked and serving to rotate the firing pin to drive the fastener, whilst restoring cam 11d contacts tab 7c throughout the rearwards displacement of the barrel and the firing pin and rotates the firing pin back to its rest position after the fastener has been driven. Preferably a barrel 2 carries a cocking pin 2c which bears against a radial projection 7d of the firing pin to tension the pin. Lock bolt 11 receives a guide pin 12 in a slot 11b and can thus be moved vertically with respect to guide pin 12 or be rotated about the longitudinal axis of pin 12. After the tool has been pressed against a workpiece (17, Fig. 2, not shown) to cock the firing pin and receive tab 7c in recess 11e in the lock-bolt trigger it is squeezed causing rotation of lever 13 about axle 15 to lift lock pin 11 against the bias of spring 14 and so cause driving cam 11c to act on tab 7c to rotate firing pin 7 so that projection 7d disengages from cocking pin 2c and is driven forwards by spring 8 to fire a cartridge. Spring 14 then acts via cam 11d to restore the firing pin and lock bolt to their rest positions shown in Fig. 1. If the trigger 16 is squeezed before the tool is pressed against work piece 17 tab 7c is not received in recess lie and hence firing pin 7 is not rotated, so that the tool does not fire (Fig. 3, not shown).
Patent GB-1551348-A (GB)
Title: Method of purifying gaseous mixtures
IPC: C01B3/56
Filed: 1976-12-14
Abstract: In the purification of gas mixtures which contain nitrogen or hydrogen or argon or a nitrogen/hydrogen mixture or a nitrogen/oxygen mixture, and have admixtures of carbon monoxide, carbon dioxide and water, by adsorption of these admixtures on type A or type X zeolites with subsequent regeneration of the zeolite, the adsorption of admixtures on zeolite is carried out in a single stage, more precisely at temperatures between minus 40 and plus 4 DEG C. In such a process, the degree of purification of the gas mixtures from the admixtures can be increased and the treatment of the gas mixture can be simplified.
Patent GB-1171610-A (GB)
Title: Improvements in or relating to Transistor Circuit Arrangements
IPC: H03F3/191
Filed: 1966-11-22
Abstract: 1,171,610. Transistor circuits. TELEFUNKEN PATENTVERWERTUNGS-G.m.b.H. 22 Nov., 1966 [21 Dec., 1965]. No. 52307/66. Heading H3T. In a transistor circuit having a diode 5 interposed in the input lead to the base of a transistor 3 with its current pass direction the same as the base-emitter junction of the transistor, the switching time, determined by the storage time of the diode 5 is shorter than that of the emitterbase diode and/or collector base diode of the transistor. Typical switching off times for the transistor are 32 or 20 nsec. and suitable diodes which have switching periods of 2 nsec. or less are gold-doped PNN+ diodes or Schottky diodes. The diode 5 prevents undesirable feedback. The transistor 3 may be a class B or as shown class C selective amplifier for a transmitter which is fed from a driver stage 1. Overswing and back modulation products are suppressed by oscillatory circuit 4 tuned to the frequency of the driver stage. Alternatively, the tuned circuit 4 may be tuned to a harmonic of the input frequency from the driver 1 and because of the non-linearity of the transistor craracteristics the circuit acts as a frequency multiplier. The load circuit 4 need not be a tuned circuit. The circuit may be formed as an integrated circuit. Also the circuit can operate as an oscillator in which case the diode 5 serves to substantially reduce undesired non-linear feedback from the output to the input of the transistor.
Patent GB-1147178-A (GB)
Title: Improvements in or relating to fences, gates and other barriers
Inventor: LLOYD JOHN MEYRICK
IPC: E04H17/16
Filed: 1966-11-23
Abstract: 1,147,178. Fencing. ALBION BOX CO. Ltd. 20 Nov., 1967 [23 Nov., 1966], No. 52401/66. Heading E1B. A panel 1 for a fence or gate comprises two stile members 2 and two intermediate members 3 each comprising opposed recessed members 4 and 5 secured together by nails 9, the recesses overlapping and receiving horizontal slats 8. The stiles 2 have holes 11 for connection to posts. A bottom rail similar to top rail 10 may be provided. In a modification the recessed members are the top and bottom rails of the fence. Some slats may be omitted to form open panel. May be sold as kit of parts.
Patent GB-1371494-A (GB)
Title: Apparatus and method for handling elongated bodies
IPC: H02G1/08
Filed: 1971-10-19
Abstract: 1371494 Clamps POST OFFICE 19 Oct 1971 [6 Nov 1970] 52951/70 Heading B4W [Also in Division H2]  A grip for hauling elongated members, particularly electric cables, comprises an inflatable rubber hose 2 helically secured to a thin rubber sleeve 1 within a steel ribbon support tube 6. An annular end cap 7 and an externally threaded ring 8 are brazed to the tube 6 and an internally threaded end cap 9 is screwed on to the ring 8. In use the grip is pushed over the end of the elongated member to be hauled, and the hose 2 is then inflated by pumping into it a fluid, e.g. water, air or oil, via a valve 4. The hose expands against the support tube 6 and the sleeve 1 thus gripping the elongated member which is then hauled by hawsers 14, 19 which pass through holes in lugs on the end caps. The hose is then deflated and may be moved to another hauling position and the cycle repeated. In a second embodiment, Fig. 3 (not shown), the support tube 6 is a wire mesh sleeve or a thin mild steel cylinder and the rubber tube 2 has a square outer cross-section. If the end of the elongated member is not accessible sleeve 1 and hose 2 can be wrapped around the cable and tube 6 is in two halves which can be fastened together.
Patent GB-1346978-A (GB)
Title: Delay elements in blasting caps
IPC: F42B3/16
Filed: 1972-11-17
Abstract: 1346978 Blasting caps CANADIAN INDUSTRIES Ltd 17 Nov 1972 [1 Dec 1971] 53183/72 Heading F3A The delay element in a delay electric blasting cap comprises a tube 5 of brass, aluminium or polymethylmethacrylate having a bore 7, cemented in which is an extruded strand of propellant 6 sized to give the required delay. The propellant may be gelatinized nitrocellulose and stabilizer or gelatinized nitrocellulose, nitroglycerine and stabilizer. The cement may be an epoxy resin.
Patent GB-1149270-A (GB)
Title: Non-woven materials
Inventor: CLARKE BARRY HENSON
IPC: D04H1/54
Filed: 1966-11-29
Abstract: 1,149,270. Non-woven fabric. IMPERIAL CHEMICAL INDUSTRIES Ltd. 10 Nov., 1967 [29 Nov., 1966], No. 53437/66. Heading D1R. A bonded non-woven fibrous material has a specific volume greater than 12.5 cm<SP>3</SP>/gm and is composed of filaments (or fibres) comprising two-dimensionally crimped composite filaments each of which consists of two polymers in a sheath/core configuration. The sheaths bond the fibres or filaments together at their points of contact. Crimped homofilaments or side-by-side bicomponent filaments may also be present. The filaments may contain polyamides, polyester amides, polysulphonamides, polyolefins, polyurethanes or combinations thereof. The filaments can be bonded by chemical means or by heating. In the Examples sheath/core filaments are formed into a tow or 83,000 to 162,00 denier, drawn 3.6-4.2X in steam and mechanically crimped to a crimp index of 20-59% with 8-22 crimps per crimp inch with a denier per filament of 4-5.6. These filaments are carded into a web, optionally rollered and heated in air to 140- 180‹C to bond the filaments.