baber/WOPTO huggingface dataset:
Patent GB-1230941-A (GB)
IPC: F16D67/06
Filed: 1969-05-08
Abstract: 1,230,941. Sewing machines. ENGINS MATRA S.A. 8 May, 1969 [24 May, 1968], No. 23628/69. Heading D1G. [‡lso in Division F2] In a driving and stopping mechanism for a sewing machine wherein an electric motor 10 drives a flywheel 32 directly and a pinion 27 through a toothed belt reduction gear 15, 16, 17, 19, 23, 25, 26, and a driven disc 61 fast with an output pulley 100 is selectively connected to the flywheel 32 and pinion 27 or is held by a brake under the control of an electromagneticaly operated clutch-brake unit 98 and a manual control 85, the clutch-brake unit comprises co-axial electromagnets 75, 76 in an axially slidable housing 72 which respectively control clutch disengagement and brake engagement. Initial depression of an operating pedal (not shown) pivots an arm 105 relative to a bellcrank 87 to operate a micro switch 109 which de-energizes the electromagnets 75, 76 whereupon a spring 96 moves the output shaft 55 and driven disc 61 right to engage the latter with the pinion 27 for low speed drive. On additional depression of the pedal the bellcrank 87 turns abouts its pivot 106 and acts through a sleeve 82, cap 90, ball bearing 81, strut 80, plate 57 and ball bearing 56 to move the shaft 55 and driven plate 61 left to engage it with the flywheel 32 for high speed drive. On release of the operating pedal the spring 96 moves the driven disc 61 right into engagement with the pinion 27 for low speed drive and thereafter the electromagnets 75, 76 are energized. Energization of the electro magnet 75 draws the magnet housing 72 left into engagement with a plate 79 and the housing acts through the plate 57'and' bearing 56 to move left the driven disc 61 to a position in which it is disengaged from both the flywheel 32 and pinion 27. Energisation of the electromagnet 76 clamps a disc 68 fast with the plate 57 against a friction facing 102 fast with the magnet housing 72 to brake the driven disc 61. In Fig. 3 (not shown) the radially outer electromagnet is spring urged to the left for clutch disengagement and is energized to move the magnet housing right during drive. Stopping control circuit. The driven shaft is stoped in a predetermined position by engaging the braking electromagnet when the driven shaft speed has fallen to a predetermined value. When the control pedal is released a switch II is closed and supplies current to a switch 229 or 231 depending on the position of a manually operated switch l2 The switches 229, 231 are closed by a magnet rotating with the driven shaft to produce a pulse at a point D during each rotation of the driven shaft. As the driven shaft speed decreases the length of the pulse increases to provide increasing voltage pulses to the gate 251 of a controlled diode T. When the voltage of the pulses applied to the gate 251 exceeds a threshold value the diode becomes conducting to energize a relay 256 which energizes the braking electromagnet. The switches 229,231 are arranged 180‹ apart so that by operation of the switch 12 the sewing machine needle may be stopped in either the needle up or needle down position.
Patent GB-1231691-A (GB)
IPC: G01K1/22
Filed: 1969-02-26
Abstract: 1,231,691. Bourdon tubes; thermometers. VDO TACHOMETER WERKE ADOLF SCHINDLING G.m.b.H. Feb. 26, 1969 [March 2, 1968], No. 10221/69. Headings G1D and G1L. A Bourdon tube comprises an inner tube 2 and an outer tube 1 of similar cross-section arranged one within the other to define between them a space forming a pressure chamber for a pressure medium from a capilliary inlet tube 6 connected to temperature responsive elements and the inferior of the inner tube 2 is in free communication with the ambient atmosphere.
Patent GB-1231913-A (GB)
IPC: B28B11/08
Filed: 1969-01-21
Abstract: 1,231,913. Cutting slots in aerated concrete. YTONG INTERNATIONAL A.B. 21 Jan., 1969 [26 Jan., 1968], No. 3346/69. Heading B5A. A device for making slots in plastic blocks of aerated concrete comprises a cutter with two spaced cutting devices, each defining a slot wall and means for removing concrete from between said slot walls. As shown, the cutter, viewed from above comprises two cutting elements 14, 15 and two cutter wires 18, 19 arranged just outside and below the cutting elements The cutting elements are held at a slight angle to each other by end members 16, 17 and the cutter wires are mounted on bars 20, 21 which are resiliently mounted via sliding rods 22, 23 on end members 16, 17. In operation, the cutter is forced downwards into block 10, the cutter wires 18, 19 providing clean edges to the cut. When the base of the block is reached, by the cutting wires, they are stopped, but the cutting elements continue downwards until they reach the base, the relative motion being permitted by the resilient mounting. The cutting device is then moved to the right; the end member 16 removing the cut concrete.
Patent GB-1232541-A (GB)
IPC: B21D3/05
Filed: 1969-03-01
Abstract: 1,232,541. Straightening; curving. MANCO MFG. CO. 1 March, 1969, No. 11044/69. Heading B3E. Apparatus for applying a straightening or bending force to a workpiece 22, Fig. 1, which moves along a predetermined path of travel through the apparatus comprises adjacently disposed bending roll support members 42, 44, 46, 54 and 56 located at least partly at opposite sides of the path of travel, a plurality of bending rolls 62, 64, 66 and 68 disposed on each of the support members, and means 96 and 98 for moving the support members for selectively positioning certain of the rolls e.g. 62 thereon for engagement with a workpiece moving along the path of travel while the other rolls e.g. 64, 66 and 68 thereon are disposed for avoiding engagement with the workpiece. To facilitate the initial insertion of the workpiece 22, structures 12 and 14 are shifted by cylinder piston means 24 and 26 between an open position and a closed workpiece processing position. In the position shown in Fig. 1 the rolls 62 achieve maximum over-bending of the workpiece. However, the turntables are adjustable for shifting the position of the rolls 62 between radii 86 and 88 (see Fig. 5). A pneumatically operated reversable indexing and adjusting motor 96 drives the turntable 44 which in turn drives the turntables 42 and 46 while a similar motor 98 drives the turntable 56 which in turn drives the turntable 54. The rolls 62, 64, 66 and 68 are driven by hydraulic motors 134 and 136 via chain drives (see Fig. 3) and sleeve members 152, 160, 164. The sleeve 160 is rotatably supported by bearing units 166 and 168 for rotation around an intermediate position of the shaft 48. The sprocket 158 is secured on the sleeve 160 adjacent a lower end thereof. An upper end portion of the sleeve 160 is provided with a gear 170 which meshes with and drives identical gears 172 respectively secured to the lower ends of the roll shafts 70, 72, 74 and 76 so that all the rolls on the turntable 42 are driven in unison. The rolls on the remaining turntables 44, 46, 54 and 56 are driven in a similar way to that described above.
Patent GB-1233453-A (GB)
IPC: F16J12/00
Filed: 1968-07-08
Abstract: 1,233,453. Metal forming apparatus. WESTERN ELECTRIC CO. Inc. 8 July, 1968 [10 July, 1967], No. 32420/68. Heading B3H. A pressure vessel stated as being used in the metal forming art comprises an inner high pressure chamber 130 whose walls 124 are surrounded by an outer fluid chamber 136 supplied with pressurized fluid through a passageway 152 in the walls of the inner chamber. The chambers are defined by a pair of coaxial cylinders closed by end caps 126, 127. The inner chamber is pressurized as high as 250,000 p.s.i. either through a passage 141 in one end cap or by inwardly movable pistons 343, 344. In the latter case the outlet from the passageway 152 is positioned centrally of the walls to apply an inward pressure at this position and prevent bowing of the walls. The pipe 150 to the passageway 152 is spaced from the end cap to prevent stress transmission to the outer walls 122. The pistons are each moved by fluid motors (261), (262), Fig. 5 (not shown), driven by fluid from a pressure source which is also supplied to a proportioning valve (265) which supplies fluid directly or through an intensifier (267) to the outer support chamber. The inner chamber walls may be made up of segments with inner and outer sleeves (414), (416), Fig. 6 (not shown).
Patent GB-1238539-A (GB)
IPC: B60V1/00
Filed: 1968-10-08
Abstract: 1,238,539. Power transmission for air cushion vehicle; driving marine propellers. VOSPER Ltd. 29 Sept., 1969 [8 Oct., 1968], No. 47742/68. Headings B7K and B7V. In an air-cushion vehicle one or more engines drive both the means producing cushion air and the propulsion means, either or both of these means being driven via a variable-ratio transmission. In the embodiment illustrated engine 15 runs at a substantially constant speed so that the fan 14, driven via bevel gears 17 and 18, provides a substantially constant lift; at the same time the engine drives a swash-plate pump 23 via helical gears 20 and 21. The pump 23 is connected to a swash-plate motor 25 and the two together constitute a hydrostatic transmission serving to drive water screw 28. The speed of the propeller can be varied by varying the angle of the swash-plate of the pump 23 and/or that of the motor 25. The propulsion means may alternatively be an air screw or a water-jet pump.
Patent GB-1238983-A (GB)
IPC: H02K17/08
Filed: 1969-04-24
Abstract: 1,238,983. Induction motors. DANFOSS A.S. 24 April, 1969 [27 April, 1968], No. 21040/69. Heading H2A. A single phase capacitor motor has a main winding 2 and two auxiliary windings 3, 4 connected in series via the capacitor 5, the auxiliary windings and the capacitor being shunted by impedances 7, 6, respectively, which carry little or no current after a start-up period whereby the windings 3, 4 are connected in parallel for starting and in series for normal running. Preferably, the impedances are positive temperature coefficient resistors which are maintained in their high resistance states by locating them close to the main winding.
Patent GB-1250856-A (GB)
IPC: A24C5/42
Filed: 1970-03-18
Abstract: 1,250,856. Cigarette-making machines. J. L. PAYNTER. 18 March, 1970, No. 13031/70. Heading A2C. A manually-operated machine for making filter cigarettes comprises a housing composed of parts 11, 12 joined together by screws in holes 14, 15 and recessed to provide a chamber 16 for a slide 24 which has projections 26 extending through a slot 27. The slide has a slot 34 to receive a pin 49 which is connected by links 47 and a pin 48 to a lever 39 pivotally mounted on the housing by a pin 43 which passes through holes 41 in the lever and through a hole 46 in a block 44 fastened to the part 12. The arrangement is such that upward movement of the free end of the lever 39 raises the slide 24 to enable a charge of loose tobacco to be inserted through a slot 17 in the part 11. A filter receiver 18 is secured at either end of the slot 17, as shown at the end 20, and has a partition 22 to separate the tobacco charge from the filter. When the free end of the lever 39 is depressed the slide 24, which has a slot 28 to pass over the partition 22, urges the filter and tobacco downwardly below the partition 22 to compress the tobacco on a plunger 61 which has an upwardly-open portion 62 of arcuate cross-section, the linkage 39, 47, 48, 49 passing through an over-centre position so that the slide is withdrawn slightly at the end of the movement of the lever 39. A lever 67 pivotally connected by a pin 68 to a projection 65 on the plunger is then operated to disengage a lock 71, 72 and slide the plunger to the right to convey the tobacco and filter through a tubular nozzle 57 located in a slot 55 into a paper wrapper tube which has been placed over the end of the nozzle 57. The portion 62 of the plunger 61 may have inner projections to assist the conveyance of the tobacco. Modifications are described in which the means for operating the slide 24 comprises a rotary cam, an eccentric, or a crank and curved link arrangement, and a gripper is provided for holding the paper tube on the nozzle 57.
Patent GB-1251440-A (GB)
IPC: B01D9/00
Filed: 1969-11-14
Abstract: 1,251,440. Reflux crystallization. H. SCHILDKNECHT and K. MAAS. 14 Nov., 1969 [15 Nov., 1968], No. 55890/69. Heading B1G. Components of different m.p.'s are separated from a mixture using a column C as shown. A rotatable spiral 4 extends across the annular gap between the inner wall of the column and a rotatable bar 3 arranged on the axis of the column. The spiral has at least one counter turn 5 at its lower end and a heater 7 is arranged adjacent the junction of the turns and counter-turn(s). In use the mixture (e.g. crude caprolactam) is supplied centrally at 1 and the spiral and bar are rotated, preferably in opposite senses. A component of high m.p. is recovered at 8 (e.g. pure caprolactam) and the remainder, of lower m.p., at 9.
Patent GB-1256909-A (GB)
IPC: B01J3/06
Filed: 1969-03-04
Abstract: 1,256,909. Synthetic diamonds. T. KURATOMI. 4 March, 1969 [4 March, 1968], No. 11349/69. Heading C1A. Synthetic diamonds are produced by subjecting a mixture of non-diamond carbon (defined) and nickel and magnesium or a nickel/magnesium alloy to a temperature of from 1095‹ to 1150‹ C. and a pressure of from 45,620 atms. to 49,000 atms. and cooling the resultant product. Free or chemically bound carbon i.e. inorganic and organic compounds which decompose to yield free carbon under the reaction conditions, may be used as the carbon source.
Patent GB-1266270-A (GB)
IPC: H04N5/84
Filed: 1970-09-09
Abstract: 1,266,270. Colour television recording system. COLUMBIA BROADCASTING SYSTEM Inc. 9 Sept., 1970 [9 Sept., 1969], No. 43198/70. Heading H4F. In a recording system of the type described in Specification 1,131,772 in which brightness information 30a, Fig. 2, and colour information 30b are recorded in adjacent portions of each frame of a monochrome film, the colour information comprising two colour signals (e.g. I and Q) amplitude modulated 32, Fig. 1, in phase quadrature on a suppressed carrier to which is added 38 a pilot carrier having a frequency harmonically related to that of the suppressed carrier frequency, e.g. half, a pedestal signal having an amplitude and polarity such as to reduce the asymmetry of the above composite colour signal is added thereto so as to permit better utilization of the dynamic range of the film. In the embodiment described the pedestal signal comprises the inverse of the I colour difference NTSC signal i.e. "-I". The waveform resulting from the addition of "-I" to the composite signal from adder 38 then has symmetrical peak excursions and occupies approximately 15% less dynamic range than when it is not added. As in Specification 1,131,772 the monochrome film is exposed by means of an electron beam recorder (although a laser may be used). In reproduction the chroma pictures are scanned independently of the luminance pictures of the film, and the chroma plus pilot plus "-I" is filtered to remove the "-I" signal.
Patent GB-1266305-A (GB)
IPC: F16K35/10
Filed: 1970-02-18
Abstract: 1,266,305. Valves. CRANE Ltd. 18 Feb., 1970 [10 March, 1969], No. 7786/70. Heading F2V.  Valve operated by a handle 18 on a stem 14 extending from a valve body 1, is locked by a device which comprises a spreadable clamp 27 adapted to encircle a portion of the valve body such as the tubular bonnet 8. The free ends 28a, 30a of the clamp are brought together so that the clamp locates on one or more lugs 24 projecting from the body to prevent rotational and axial movement. A locking member such as a padlock 51, 52 secures the handle 18 to these free ends. As shown, oppositely flanged sides of the arms engage the lugs. The padlock hasp 51 goes through a selected pair of aligned holes in the overlapping free ends. In another embodiment, the clamp is in one piece with ends riveted together, and the hasp engages a notch in the ends.
Patent GB-1288034-A (GB)
IPC: F16L59/14
Filed: 1968-09-03
Abstract: 1288034 Thermally insulated pipes K K G DURR 2 Sept 1969 [3 Sept 1968] 41769/68 Headings F2P and F2X  Heat insulation between a heat conducting wall and a second wall, spaced from the first, is provided by covering the surface of the first wall adjacent the second with a heat barrier layer and then setting an insulating foam material in situ between the barrier layer and the second wall. The foam material may be foamed in situ or introduced in a foamed condition. The first and second walls may be in the form of inner and outer coaxial pipes. The barrier layer may be of fibrous material, e.g. glass wool and may be impregnated or coated with phenolic resin before being applied to the first wall. The phenolic resin may be cured by the heat evolved during foaming and/or setting of the insulating material, which may be polyurethane. The fibrous material may not be applied to end portions of the inner pipe.
Patent GB-1288759-A (GB)
IPC: B60R21/26
Filed: 1968-09-27
Abstract: 1288759 Protecting devices CUSHION CAR Ltd 26 Sept 1969 [27 Sept 1968 29 Oct 1968 8 Nov 1968 9 April 1969 30 April 1969 20 May 1969 28 May 1969 (2) 29 May 1969 16 June 1969] 46129/68 51332/68 53173/68 18190/69 22142/69 25641/69 27111/69 27112/69 27366/69 and 30465/69 Addition to 1215803 Heading B7B A rigid or semi-rigid frame 3 positioned in front of a driver (7) of a vehicle is covered with layers of crushable material such as foamed isocyanate of increasing stiffness towards the support 3.
Patent GB-1290438-A (GB)
IPC: F21V7/08
Filed: 1970-04-10
Abstract: 1290438 Optical reflectors CCT THEATRE LIGHTING Ltd and R J DEICHEN 19 April 1971 [10 April 1970] 17277/70 Heading G2J An optical system comprises a reflector 1, a gate 3 and a light source 2 said reflector being such that light reflected thereby gives a substantially even field of illumination at the gate and being constructed to meet the equation where Ymax is the radius of the gate, Wmax is the angle between a line passing through the source and the centre of the reflector and a line passing through the source and a point on the edge of the reflector, light reflected from said point passing through the gate at a distance Ymax from the centre thereof, W is the angle between a line passing through the source and the centre of the reflector and a line passing through the source and any other point on the reflector, light reflected from said any other point passing through the gate at a distance Y from the centre thereof. The reflector may be manufactured by determining the edge of the intended reflector, determining a first plane reflecting surface which includes a point on the intended edge and which is positioned so that a first ray of light from a point source located at 2 would pass through the gate, following reflection by the first plane surface at the said point at a distance Ymax from the centre of the gate, and determining a plurality of second plane reflecting surfaces each of which includes a point on a previously determined plane reflecting surface and is so positioned that a ray of light from the point source would pass through the gate, following reflection by that second plane surface at the said point on a previously determined surface at a distance Y from the centre of the gate and forming a reflector in the shape of a smooth curve approximation to the plurality of plane reflecting surfaces.
Patent GB-1290564-A (GB)
IPC: B22F3/12
Filed: 1970-08-12
Abstract: 1290564 Vacuum chambers COMMISSARIAT A L'ENERGIE ATOMIQUE 12 Aug 1970 [12 Aug 1969] 38850/70 Heading FIX A receptacle in which a negative pressure can be established to e.g. degasify and sinter pulverulent or finely divided material, comprises a cylinder 1 into which fits with clearance one or two closure devices, the embodiment shown in Fig. 1 having two such devices which each comprise a piston 2 formed with a chamfer 3 which defines a groove for a packing ring 4 held in place by projections 11, Fig. 2, of a resilient plate 5, the plate being secured to each piston by a screw 9, detachable stop means 6 retaining each piston within the cylinder 1. The receptacle containing material is placed within an enclosure 7 which is evacuated through an aperture 8. This causes the plates 5 to bend with consequent unseating of the packing rings 4. The pressure inside the cylinder 1 thus drops until equal to that in the enclosure 7 when the plates 5 return the packing rings 4 to seal the cylinder 1. A rod 12 is provided to limit movement of the pistons 2 if it is not required to subsequently compress and so sinter the material by placing the receptacle in an enclosure of higher pressure than that in the cylinder 1. (For Figures see next page)
Patent GB-1290820-A (GB)
IPC: B23K3/02
Filed: 1971-07-08
Abstract: 1290820 Soldering PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 8 July 1971 [11 July 1970] 32167/71 Heading B3R A soldering tool comprises a closed hollow soldering element 6 which is mounted in a holder 1 and contains a vaporizable heat transmitting medium, a part 7 of the wall of the element 6 being arranged adjacent a heat sourc e 3; in use heat received from the source 3 vaporizes the heat transmitting medium which condenses at the soldering tip 8, thereby heating the tip, and returns to the area 7 by capillary action in a porous mass 10 within the soldering element 6. The porous mass may be a ceramic lining or system of grooves, ducts, wires &c. and the vaporizable medium may be, e.g. sodium in which case the element 6 is of chromium-nickel steel. Other metals or salts are referred to as possible heat transmitting media the selection depending upon the soldering temperature. Various alternative configurations of the tool are referred to (Figs. 2-9, not shown) including some in which the soldering element has a plurality of spaced soldering tips or in which a plurality of soldering elements are provided and operated from a single heat source. The tool is stated to be of particular utility in soldering components in electronic circuits.
Patent GB-1296798-A (GB)
IPC: G11C15/04
Filed: 1971-10-25
Abstract: 1296798 Transistor storage cell MULLARD Ltd 25 Oct 1971 49451/71 Heading H3T An associative memory cell has double emitter transistors 1, 2 and two pairs of transistors 11, 12 12 2 18, 19 all interconnected substantially as shown. To compare the cell state (e.g. T2 on) with the bit line signals (e.g. 7 high 8 low), the word drive line 6 is held at the lower of its two potentials and T18, T19 are therefore off. Because T2 collector is low and bit line 7 high, the potential at e 2  enables T11 to conduct and the resulting voltage across R15 holds T16 off; this indicates equality. If bit line 7 were low, T11 would not conduct; and bit line 8, being correspondingly high, would not cause T12 to conduct because T1 collector is also high. Thus T16 would conduct to indicate inequality. To write, the word line 6 goes high to turn on T18, T19 which divert the R3, R4 current from T1, T2, and the bit line potentials determine which of the emitters e 2  of T1, T2 conduct to produce an extra current in R3 or R4. The different potentials thus produced at the collectors of T1, T2 determine the cell state as the word line 6 is taken low again to turn off T18, T19.