baber/WOPTO huggingface dataset:
Patent GB-804459-A (GB)
Title: Improvements in or relating to a device with an angularly adjustable stop, particularly for a control shaft of a machine tool
IPC: B24B47/26
Filed: 1957-04-09
Abstract: 804,459. Locking rotary elements. MIPSA S.A. April 9, 1957 [April 11, 1956], No. 11515/57. Class 80 (4). [Also in Group XXIII] A device with an angularly-adjustable stop, particularly for the control shaft 3 of a machine tool, comprises a projection 13 on a disc 11 which is coaxial with and rotatable by the shaft when the projection engages a finger 14 secured in a fixed angular position to the shaft, and a locking mechanism which enables the angular position of the disc to be fixed and the projection 13 to form a stationary stop for the finger. The finger 14 is carried by a flange 4 rigidly fixed to a hub 5 secured to the shaft by rings 7 forced between the hub and shaft by a member 8 and screws 9. The projection 13 is secured to a drum 12 on the disc 11, which is rotatable on the hub 5, and may be driven by the finger 14 engaging the projection 13. The projection can also act as a stop for the finger 14 and shaft 3 when a split ring 15 is clamped on to the drum 12 by conical jaws 20, 21 which engage with lugs 18 on the ring and are urged together by a piston-and-cylinder device 22, 23; the split ring also acts as a spring to separate the jaws when the device 22, 23 is inoperative. The angular position of the ring can be adjusted by a micrometer screw 30 in the housing 1 of the machine co-operating with an arm 26 on the ring. A graduated drum 34 is frictionally held on the hub 5 by a spring-urged disc 35 and can be adjusted by a gear device. A window 38 is provided in the housing to enable the graduations to be observed. The locking mechanism, which may be of some other form, such as drum brakes or discs used on automobile vehicles, may be operated by other hydraulic, pneumatic or electric means.
Patent GB-1306293-A (GB)
IPC: C09K19/36
Filed: 1970-03-11
Abstract: 1306293 Cholesteric liquid crystals WESTINGHOUSE ELECTRIC CORP 11 March 1970 [30 April 1969] 11656/70 Heading C2U [Also in Divisions C4 and G1] Dicholesteryl esters of C 2-27  α,#-dicarboxylic acids are prepared by reacting cholesterol with an appropriate diacyl halide in the presence of an acid-binding agent. Specified esters are the oxalate, malonate, succinate, glutarate, adipate, pimelate, sebacate, maleate, fumarate, citraconate and mesaconate. The compound cholesteryl p-nonylphenyl carbonate is also disclosed.
Patent GB-678854-A (GB)
Title: An appliance for forming cavities in soil for planting, or for removing cores of soil from the ground
IPC: A01C5/02
Filed: 1950-05-10
Abstract: 678,854. Soil-removing dibbles. GRUNDY, H. L. May 10, 1951 [May 10, 1950], No. 11636/50. Class 6(ii) An appliance for forming cavities in and removing cores of soil from the ground, comprises a plunger 8 slidable in a tube 1, one half 4 of the lower part of the tube being pivoted to the remainder. A stud 9 projects from the plunger through a slot in the part 4 and is provided with a head 12, and a similar stud projects through a slot in the part 3, thus keeping the halves 3, 4 together during the first part of the penetration into the ground. The shank 1 may be less in diameter than the parts 3, 4.
Patent GB-104670-A (GB)
Title: An Improved Steel Alloy.
IPC: C22C38/22
Filed: 1916-08-17
Abstract: 104,670. Stahlwerke R. Lindenberg Akt.-Ges. Feb. 26, 1916, [Convention date]. Alloys.-A steel alloy for use as a high-speed steel contains 0.6 to 1.2 per cent of carbon, 1 to 2 per cent of manganese, 0.1 to 0.3 per cent of silicon, 3 to 10 per cent of chromium, and 1 to 5 per cent of cobalt. 0.15 to 2 per cent of vanadium may be added. Specifications 103,809 and 103,810 are referred to.
Patent GB-130947-A (GB)
Title: Improvements in or relating to Mixing Machines particularly applicable to the Mixing of Dough, Pastry, Confectionery and the like.
Inventor: HALL JOHN
IPC: A21C1/02
Filed: 1919-05-09
Abstract: 130,947. Hall, J. May 9, 1919. Stationary batch-mixers with stirrer having complex motions.-A mixing-machine for dough, pastry, confectionery, and the like has means for varying the speed of rotation of the mixer, and a universal joint between the driving shaft and the mixer to enable the latter to be inclined at various angles to the axis of the mixing pan. The mixer 38, Fig. 1, is rotated by a vertical shaft 1 which is driven by a friction disk 15 that can be moved into engagement with a wheel 14 feathered on the shaft 1. The wheel 14 can be moved along the shaft 1 by means of a handle 31, thus permitting the speed of rotation of the shaft to be varied. The shaft 1 can also be moved vertically by a rack and pinion controlled by a lever 11 which can be locked in any position by means of a screw 12 and a slotted quadrant 13. The lower end of the shaft 1 is provided with a cross pin 34, Fig. 3, which engages in a slotted quadrant 35. The quadrant has its lower end formed as a bearing for the upper end of the shaft 37 of the mixer 38, the shaft being formed with a ball 43 which rests in a socket 40. By moving the shaft 1 vertically, the mixer shaft 37 can be tilted at various angles with the shaft 1 while the bear. ing 36 allows the mixer to rotate about its own axis by the drag of the material as well as revolving about the line of the shaft 1. In order to prevent the mixing pan 54, Fig. 1, from moving, clips 57 are provided which are attached to rods 55 that can be locked by screws. A lever 60 on a pedal may be provided for raising and lowering the pan 54, and a gas burner 65 may be provided for keeping warm the contents of the pan.
Patent GB-557348-A (GB)
Title: Method and apparatus for the continuous heat treatment of rosin
IPC: C09F1/00
Filed: 1941-09-15
Abstract: 557,348. Heat treating rosin; distilling. HERCULES POWDER CO. Sept. 15, 1941, No. 11807. Convention date, Sept. 16, 1940. [Classes 32 and 95] A method for the continuous heat treatment of rosin includes continuously flowing molten rosin, without causing distillation thereof, into a heating zone maintained at a temperature sufficient to heat the rosin to a temperature within the range 250‹ - 350‹ C, then continuously flowing the heated rosin into a second heating zone maintained at a temperature within the range 250‹-350‹C, holding the rosin in said second heating zone at the aforesaid temperature until its characteristics have been substantially altered while simultaneously removing the small amount of volatile products formed in the second heating zone, and then continuously flowing the heated rosin into a cooling zone and continuously discharging heat-treated rosin from said cooling zone. Heating of the rosin in the second zone should preferably be for a time sufficient to eliminate its property of forming an acid abietate salt on treatment with alkali, but insufficient to change its crystallizing character. An apparatus, suitable for carrying out the method, comprises a pump 11 for pumping molten rosin into the heat exchanger 13. Rosin, heated to 250‹-350‹ C. leaves 13 and enters the heat treating vessel 14 provided with internal baffles, and maintained at 250‹-350‹ C. Volatile matter is condensed at 22, and the heat-treated rosin is run off through one of the valves 15-21, and is cooled in the heat-exchanger 12. Specification 298,214, [Class 95], is referred to.
Patent GB-639536-A (GB)
Title: Improvements in and relating to mercury vapour lamps
IPC: H01J61/073
Filed: 1946-04-17
Abstract: 639,536. Metal-vapour lamps. GENERAL ELECTRIC CO., Ltd., and POWER, E. B. April 17, 1946, No. 11869. [Class 39 (i)] In a high-pressure mercury vapour lamp in which the greater part of the light comes from the positive column of the discharge of the compact source type operating on D.C. and in which the anode is more massive than the cathode, the end 17, Fig. 1, of the cathode adjacent the anode 14 is separated from the remainder of the cathode by a neck portion 19 of reduced cross-section so as to obstruct heat flow; as a consequence the portion 17 is hotter and the arc is less likely to "wander." The cathode comprises a tungsten pillar 15 and a bentover portion 18 of reduced diameter in which the constriction 19 is ' formed; the portion 17 is of substantially spherical shape. The diameter of the constriction 19 is less than half that of the portion 17. The anode comprises a tungsten pillar 11 carrying a block 13 with a hemispherical active face 14. For starting purposes a rod of activating material enclosed in a tungsten helix is located in a hollow in the cathode and is held in place by a further tungsten helix surrounding the cathode itself, Fig. 2 (not shown). " High pressure " is defined as a pressure equal to or greater than one atmosphere, and the " compact source type " as the type in which the arc length is less than the distances of the active electrode faces from the walls of the envelope.
Patent GB-580503-A (GB)
Title: Improvements in emergency-exit fastenings
IPC: E05C9/14
Filed: 1944-06-22
Abstract: 580,503. Emergency exit fastenings. NEWMAN & SONS, Ltd., W., and SHEAD, H. C. June 22, 1944, No. 11879. [Class 44] In an emergency exit fastening having upper and lower bolts 1 withdrawn by a transverse crush-bar, an angularly movable bolt-operating member 11 pivoting in a vertical plane parallel to the crush-bar has arms, 15 engaging the ends of the bolts, the ends of the arms and the bolts being shaped to form cooperating surfaces which when the bolts are in fastening position lock the bolts against, endwise movement. The arms 15 engage slots 16 in the ends of the bolts which have concave arcuate surfaces 17 having the centres of curvature, in fastening position, coincident with the centre of the member 11, the ends 18 of the arms 15 being adapted to move over and mate with these surfaces. The member 11 is provided with a, slot engaged by the end of an arm 10 operated by the crush-bar. A handle may be fitted in the hole 19.
Patent GB-1026314-A (GB)
Title: Universal joint
IPC: F16D3/26
Filed: 1964-03-20
Abstract: 1,026,314. Universal joints. BETEILGUNGSUND PATENTVERWALTUNGS GESELLSCHAFT. March 20, 1964 [March 23, 1963], No. 11905/64. Heading F2U. In a universal joint for driving rollers or drums wherein one shaft head 1 is forked to receive trunnions 3 carried transversely on the other shaft head 6, the free ends of the arms 8 of the forked head are connected by one or two rigidity ties 9, integral therewith or welded thereto. As shown, the trunnions 3 are carried on a transverse pin 4 passing through a flatsided block 5 received in an open-ended slot in the shaft head 6. In Figs. 3 and 5 (not shown), the trunnions turn on pins carried by a block splined directly on the end of the shaft. In Figs. 6 and 7 (not shown), the fork ends are connected by an H-shaped tie welded to them.
Patent GB-830079-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B7/083
Filed: 1956-04-19
Abstract: 830,079. Integrating apparatus. SOC. DE CARTONNAGES D'ECHANTILLONNAGE ET DE RELIEURE D'AUBERVILLIERS (SCERA). April 19, 1956 [April 21, 1955; April 18, 1956], No. 12017/56. Class 106 (4). [Also in Group XL (b)] In order to determine the exposure time in photographic apparatus the apparatus is provided with a light-sensitive cell so placed as to receive illumination bearing a definite relationship to that falling on the emulsion and the cell associated with integrating means. When the amount of light entering the apparatus reaches the desired value the integrating means may automatically close a shutter to complete the exposure of the emulsion. The cell may be mounted inside a camera body and as close as possible to the plane of the film or plate. Integrator and control arrangements.-In one embodiment (Fig. 3) operation of press-button P closes a circuit at P<SP>1</SP> to charge a capacitor C to a given potential and applies a (negative) potential to G 1  to render triode T 1  non-conductive and triode T 2  conductive, thus causing relay R to connect line l<SP>2</SP> to line l<SP>12</SP>. Release of the button P opens the circuit at p<SP>1</SP> and closes p<SP>2</SP> to cause shutter control T to be energized to open the shutter. Light falling on the cell A controls the discharge of capacitor C and when the potential of G 1  rises sufficiently T 1  conducts and T 2  is cut off, causing the relay R to operate contact I to connect line l<SP>2</SP> to l<SP>22</SP> and energize control T to close the shutter. The potentiometers V 1  and V 2  adjust the charge applied to the capacitor C and V 2  is adjusted to bring the discharge curve to a level at which the changeover in the double triode is well defined. In a second embodiment (Fig. 5) the cell A<SP>1</SP> and a capacitor C 1 <SP>1</SP> are used to control the frequency of a blocking oscillator. The peak level of the potential applied to C 1 <SP>1</SP> is determined by potentiometer K which thus provides a setting adjustment. When the shutter is opened the light falling on the cell determines the rate of discharge of C  1 <SP>1</SP> and each oscillation results in an impulse in the plate circuit of the valve P which can be derived across R 1 <SP>1</SP> and applied to a counter circuit. When the counter reaches a predetermined number it operates means for closing the shutter and applies negative bias to G 3 <SP>1</SP>.
Patent GB-438254-A (GB)
Title: Press for pressing of plates, especially for use in the manufacture of radiators
IPC: B21D53/04
Filed: 1935-04-23
Abstract: 438,254. Dies for making radiators &c. MOHR, E., 65, Sondre Fasanvej, Frederiksberg, Copenhagen. April 23, 1935, No. 12150. Convention date, April 24, 1934. [Class 83 (iv)] Radiator units &c. are pressed from plates welded together at their edges, by internal fluid pressure, while in top and bottom dies 3, 4, held in position by channel rails 2, the dies being sectional so that they can be lengthened by inserting more intermediate pieces 7 between end pieces 5, and each set being attached to a common rail 8 or 9.
Patent GB-985511-A (GB)
Title: Improvements in and relating to a method of manufacturing self-closing bags
Inventor: SWINBANK COLIN
IPC: B31B19/84
Filed: 1960-04-06
Abstract: 985,511. Making valve bags. IMPERIAL CHEMICAL INDUSTRIES Ltd. April 6, 1961 [April 6, 1960], No. 12165/60. Heading B5D. [Also in Division B8] A self-closing bag is manufactured from a tube of thermoplastic material by sealing one end of the tube to form a bag, and shaping and sealing the other end of the bag to form an access through an integral outstanding sleeve, which is subsequently inturned within the bag to form a self-closing valve. The bags are preferably made from lay flat tubing, P. C., polythene, nylon &c., and two valve ends are. shaped simultaneously. Thus bags X, Y, Fig 1, have their sleeves FHIL, and GEDK, respec tively, formed by simultaneous cuts LIJ, CKD, CFHJ and seals DK, EG, FH, LI. Bay Y has its base MN sealed during the previous bagmaking operation, and a seal AB is formed which serves both for the bag X, and the next bag Y. The sleeve is inserted in the bag as shown in Fig. 3. Fig. 6 shows one of two bags formed by a Z-shaped cut in the tube which does not result in any waste. The tube is sealed along line EF before separation, and a second seal DH made after the sleeve was tucked into the bag. Various other minor modifications are described.
Patent GB-1500861-A (GB)
Title: Process for preparing acetic acid
IPC: B01J31/40
Filed: 1976-03-26
Abstract: 1500861 Acetic acid HOECHST AG 26 March 1976 [29 March 1975] 12243/76 Heading C2C A process for the preparation of acetic acid comprises a first oxidation stage in reactor 1 in which acetaldehyde is reacted with oxygen or an oxygen-containing gas in the presence of a manganese acetate catalyst, a second oxidation stage in after-reactor 2 in which the crude liquid product of the first stage, optionally together with the vaporous product, is treated with oxygen or an oxygen-containing gas, distilling off from the second-stage product the acetic acid and low-boiling by-products in columns 11 and 14, and recirculating at least part of the residue, which comprises manganese acetate and highboiling materials via conduit 16, to serve as catalyst in the first oxidation stage.
Patent GB-910872-A (GB)
Title: Method and apparatus for the extrusion casting of films of organic thermo-plastic polymeric materials
IPC: B29C43/24
Filed: 1960-04-06
Abstract: A process for high speed extrusion casting of normally solid organic thermoplastic polymers into films, including moving a molten film of a normally thermoplastic polymer through a nip formed by a rigid smooth-surfaced driven roll maintained at a temperature below the solidification temperature of the polymer and by a contra-rotatable resiliently surfaced roll, comprises drawing the molten film in the form of an unsupported material into the nip between the rolls at a substantially high speed, the resiliently surfaced roll being adapted to exert sufficient pressure at the nip to prevent occlusion of air and the film, following passage through the nip, being retained on the driven roll for part of a revolution until the film is substantially quenched or cooled, thereby producing high quality uniform film. The polymers may be polyethylene, polypropylene, polybutylene, polyvinyl chloride and copolymers of ethylene and propylene and styrene with isobutylene.  The driven roll may be made of highly polished chromium plate, steel or aluminium and the resilient roll is preferably made of polytetrafluoroethylene but silicone rubber, natural rubber, inflated rubber rolls or neoprene may also be used.  Extrusion is effected at 195 DEG -325 DEG F. with a pressure of 0,2 to 250 lbs. per inch on the film in contact with the roll.ALSO:A process for high speed extrusion casting of normally solid organic thermoplastic polymers into films, including moving a molten film of a normally thermoplastic polymer through a nip formed by a rigid smooth-surfaced driven roll maintained at a temperature below the solidification temperature of the polymer and by a contrarotatable resiliently surfaced roll, comprises drawing the molten film in the form of an unsupported material into the nip between the rolls at a substantially high speed, the resiliently surfaced roll being adapted to exert sufficient pressure at the nip to prevent occlusion of air and the film, following passage through the nip, being retained on the driven roll for part of a revolution until the film is substantially quenched or cooled thereby producing high quality uniform film. The polymers may be polyethylene, polypropylene, polybutylene, polyvinyl chloride and copolymers of ethylene and propylene and styrene with isobutylene.  The driven roll may be made of highly polished chromium plate, steel or aluminium and the resilient roll is preferably made of polytetrafluroethylene but silicone rubber, natural rubber, inflated rubber rolls or neoprene may also be used.  Extrusion is effected at 195 DEG -325 DEG F. with a pressure of 0,2 to 250 lbs. per inch on the film in contact with the roll.
Patent GB-1436913-A (GB)
Title: Motion control syem for direct current motors particularly in sewing machine uses
IPC: H02P3/12
Filed: 1974-03-20
Abstract: 1436913 Automatic control KOLLMORGEN CORP 20 March 1974 [3 April 1973] 12304/74 Heading G3N [Also in Division H2] A braking control system for a D.C. motor comprises mechanical braking means, means responsive to the back emf. of the motor when unenergized to develop a speed representative signal, means responsive to de-energization of the motor and to the speed representative signal for dynamically braking the motor to slow it to a given speed level, and means for driving the motor at the said speed level for at least a limited period of time prior to energization of the braking means, and braking control means responsive to the speed representative signal for energizing the braking means at a time after the motor has attained said given speed level and has been operating at said speed for at least said limited period of time. A drive means includes a manually variable transformer 15 coupled via a bridge 14 across the motor 10 via normally open contact 13, and a braking circuit is coupled across the motor and enabled via a normally open contact 20. When treadle 18 is released, power to the motor 10 is decreased and switch 12 changes position. This closes the braking circuit via resitor 22 and transistor 24 which is on by a logic 1 signal from the Q output of flip-flop 27. The voltage, and hence the motor speed, across resistor 22 is monitored at comparator 30 and an output and an output from negative-going detector 33 sets flip-flop 27 when the speed decreases to a reference level. This setting causes transistor 24 to be turned off and amplifier 38 to be enabled. The signal from amplifier 38 together with that through Zener 44, which is derived from the back emf. of the motor, turn on a transistor 40 to pass a regulated voltage to the motor 10 to maintain it at a speed equal to the reference level. In the particular example, the motor drives the needle assembly in a sowing machine and an electromagnetic pick-up device 50, 52 provides pulses through either AND gates 57, 58 indicative of instants where the needle is at its bottom or top point of its travel. In normal operation, the gate 57 is enabled and a "bottom" pulse passes via OR gate 62 to reset the flip-flop 27 which turns off transistor 40. The restoration of 1 to the Q output of flip-flop 27 is detected at 75 to activate monostable 76 to cause mechanical brakes to operate. If the "top" position is required, a switch 78 is operated to set the flip-flop 27 via gate 35 to apply a regulated voltage to the motor 10 via transistor 40 until the next "top" pulse is detected.
Patent GB-1462731-A (GB)
Title: Method of and apparatus for the electrolytic desulphurization of liquid metals
IPC: C22B9/10
Filed: 1975-03-25
Abstract: 1462731 Desulphurizing electrolytically INSTITUT DE RECHERCHES DE LA SIDERURGIE FRANCAISE 25 March 1975 [27 March 1974] 12333/75 Heading C7B Molten metal e.g. steel is electrolytically desulphurized by passing a direct current between a cathode in contact with the metal and an anode in contact with a particulate solid electrolyte on the surface of the metal. The electrolyte is made up of one or more oxides of alkali or alkaline-earth metals (e.g. lime or dolomite) and contains one or more halides of said metals (e.g. CaF 2 ). The anode may contact the metal via a pulveralent non- reactive conductor, the anode and cathode contact regions being separated by a refractory partition. Contact of each electrode may be improved by an upper layer of graphite. The electrodes may be supported above a vessel, (e.g. a ladle which may or may not be heated e.g. inductively), on a common raisable gantry. Cooled electrodes may be used. Reference has been directed by the Comptroller to Specification 1409401.
Patent GB-547360-A (GB)
Title: Improvements in and relating to refrigerator cabinets
IPC: F25D23/00
Filed: 1941-09-24
Abstract: 547,360. Refrigerators. BRITISH THOMSONHOUSTON CO., Ltd. Sept. 24, 1941, No. 12350. Convention date, Sept. 27, 1940. [Class 29] A motor-compressor unit 25 of a machinecooled domestic cabinet is arranged at the top or bottom rear corner of the cabinet, with the evaporator 23 at one side at the top, the unit being beyond the back of the inner liner 18 and below the bottom or above the top of the liner. It may be in a sealed casing with cooling fins 34. The unit is suspended by springs 27 from brackets 26 secured to a back plate carrying the condenser 24 and spaced from the back wall to provide an air flue 30. The back plate and back wall may be lined with sound deadening material. Air admission louvres 32 may be provided at the front below the storage space, which may be fitted with receptacles 37a supported slidably on rail tracks 50. The Specification, as open under Sect. 91, comprises also an arrangement in which the motor-compressor unit is arranged in an open-ended cylindrical casing with the condenser coiled around it, and air may be circulated over and through the casing by a fan driven by a separate motor. This subject-matter does not appear in the Specification as accepted.