baber/WOPTO huggingface dataset:
Patent GB-785355-A (GB)
Title: Substituted pteridine derivatives
IPC: C07D475/04
Filed: 1954-01-29
Abstract: The invention comprises 2-acylamino-10-formyl-pteroyl-glutamic acids and their preparation by the following methods:-(1) reacting an N - {p - [(2 - acylamino - 4 - hydroxy - 6 - pteridylmethylene) imino] benzoyl} glutamic acid with formic acid, or with a tri-(lower alkyl) ammonium formate at an elevated temperature; (2) reacting a 2-acylamino-4-hydroxy-6-formylpteridine with L( - )N-(p-aminobenzoyl) glutamic acid in presence of formic acid, or with L( - )N-(p-formamidobenzoyl) glutamic acid, or with L( - )N - (p - aminobenzoyl) glutamic acid and a tri-(lower alkyl) ammonium formate at an elevated temperature; (3) reacting a 2-acylamino-4-R1-6-di-R-pteridine (R being alkoxy or aralkoxy and R1 being hydroxy, alkoxy, aryloxy or aralkoxy) with L( - )N-(p-aminobenzoyl) glutamic acid and formic acid. The above processes in which a tri-(lower alkyl) ammonium formate, i.e. one containing at most 5 carbon atoms in each alkyl radical, is used are advantageously performed at 150 DEG  C. at superatmospheric pressure in an excess of the formate, the other processes being advantageously performed at an elevated temperature, e.g. at reflux, in presence of a solvent such as a lower alcohol, dioxan, ether or an inert chlorinated hydrocarbon, or in an excess of formic acid, preferably with addition of a small amount of acetic anhydride.  The invention further comprises the preparation of 10-formyl pteroylglutamic acid by the following methods:-(1) reacting a 2-amino-4-R1-6-di-R-methylpteridine with L( - )N-(p-aminobenzoyl) glutamic acid and an excess of formic acid at an elevated temperature, preferably in an excess of substantially pure formic acid, which may contain a small amount of acetic anhydride, at about 70-80 DEG  C.; (2) reacting 2-amino-4-hydroxy - 6 - formyl - pteridine with L( - )N-(p-aminobenzoyl) glutamic acid and a trialkyl ammonium formate, e.g. triethylammonium formate, at an elevated temperature, advantageously at 150 DEG  C. under superatmospheric pressure in an excess of the formate.  Lastly the invention also comprises the process of hydrolysing a 2-acylamino-10-formyl-pteroylglutamic acid to produce pteroylglutamic acid.  The hydrolysis may be effected with an inorganic or organic acid or base, and advantageously with an inorganic acid or base in water or an inert organic solvent at elevated temperatures.  In examples 2-acetamido-10-formyl pteroylglutamic acid and 10-formyl pteroylglutamic acid are prepared by each of the above methods. Other 2-acylamino-10-formyl pteroylglutamic acids in which the acyl substituent is alkyl-, aryl-or aralkylcarbonyl are also referred to. Starting material.  L( - )N - (p - formamidobenzoyl) glutamic acid is prepared by heating L( - )N-(p-aminobenzoyl) glutamic acid with concentrated formic acid.  Specifications 785,353 and 785,354 also are referred to.
Patent GB-502997-A (GB)
Title: Improvements in devices for temporarily binding loose leaves or cards
IPC: B42F13/28
Filed: 1938-06-21
Abstract: 502,997. Loose-leaf binders. EDLER, F. June 21, 1938, No. 18474. [Class 146 (i)j A, loose-leaf binder is provided with two sets of filing prongs 3, 4, each made by suitably bending a length of wire as shown, and secured to a cover 1 by a single strip of material 2, so that one or both of the sets may be swung from the closed to the open position and vice versa. In the arrangement shown in the Figure, which is for holding a number of leaves in stepped order, the prongs 3 are complete semicircles in shape and project through holes in the strip 2. They can be pivoted about the axis of the wire 3 and are secured in the closed position by a sheet-metal strip 7 which engages a recess in the tip of the end prong. The prongs 4 are of half the length of the prongs 3 and the ends 5, 6 of the wire carrying them are turned-in to prevent rotation of these prongs. In order to facilitate the insertion and removal of sheets, slots 19 may be provided in the strip 2 to allow of longitudinal movement of the prongs 4. Halfprongs may be formed on the rod 3 opposite to the prongs 4. Instead of the locking-strip 7, a plate extending the full depth of the cover may be employed so as to engage the ends of all the prongs 3.
Patent GB-1036007-A (GB)
Title: Improvements in pneumatic conveying apparatus for handling dust
Inventor: GARBETT GEORGE CYRIL
IPC: B65G53/00
Filed: 1963-05-09
Abstract: 1,036,007. Pneumatic conveyers; counterbalancing. BABCOCK & WILCOX Ltd. May 8, 1964 [May 9, 1963], No. 18476/63. Headings B8A and B8B. Pneumatic discharge apparatus for delivering dust to enclosed railway wagons 19, Fig. 3, comprises a flexible bellows pipe 17 having a flexible pervious lining 21 and means for delivering air to the annular space between the wall and the lining for cleaning the internal surface. The lining may have reinforcing rings 22. The upper end of the pipe 17 has an annular chamber 27 for the supply of air and the lower end has a suction chamber 39 shaped to seal in the container aperture 47 and is adapted to evacuate the container. The pipe 17 is arranged below a fluidized dust discharge hopper 13 (not shown) having a discharge valve followed by a fluidized bed conveyer. A level sensing device 55 in the container 19 may control the closing of the hopper discharge valve. An automatic control system is described in which the air supplies are shut off after a time delay so that the pipes may be cleared of dust. Counterbalancing.-The pipe nozzle 37 is supported by a counterweight 75, Fig. 1 (not shown), acting through cables 81 passing over fixed pulleys 83, 85 and means is described whereby the weight 75 may be lifted and supported by action of ratchet held lever so that the nozzle 37 seats under gravity after being lowered into position.
Patent GB-1008737-A (GB)
Title: Liquid fuel pumps for internal combustion engines
Inventor: KEMP KENNETH ALBERT WALTERS
IPC: F02M41/14
Filed: 1961-05-23
Abstract: 1,008,737. Fuel injection pumps. C. A. V. Ltd. July 10, 1962 [May 23, 1961], No. 18534/61. Heading F1A. A shuttle 32 is movable in a longitudinal bore 29 of a rotary distributer 28 having a radial cylinder pump head 23, between stops 33, 34 such that liquid discharged by the radial pump causes the shuttle to discharge liquid to the distributer outlet 30 until the shuttle clears a by-pass 39. Liquid is fed to the radial pump and outlet side of the shuttle by pistons 46, 47 respectively which are connected by grooves (not shown) in one position of the distributer to a feed pump 21; subsequently the feed pump is connected to the upper end of the pistons 46, 47 which discharge liquid into the bore 29 through passages 36, 35. The quantity of liquid discharged by the piston 46 controls the outward movement of the radial pump pistons and hence the time of injection and the quantity of liquid discharged by the piston 47 is the quantity to be discharged to the injectors. The strokes of the pistons 46, 47 and hence the timing and fuel quantity is regulated by a rotary face cam 53; in addition the stroke of the piston 46 (and timing) is further controlled by a wedge 55 connected to a piston 56 subjected to the speed variable outlet of the feed pump 21.
Patent GB-1438425-A (GB)
Title: Electrical terminal and brush housing
IPC: H01R39/40
Filed: 1974-04-29
Abstract: 1438425 Brushgear; two part couplings FORD MOTOR CO Ltd 29 April 1974 [21 May 1973] 18590/74 Headings H2A and H2E A terminal member 50 which releasably fits into a brush holder 72 for conveying current to or from a brush 34 via a conductive pressure spring 36 includes a relatively wide end section 52 having elements 56, 58 for receiving a conductor lead (86, Fig. 11, not shown), and a relatively narrow end section 54 having a folded part 64, 68, 66 for making contact with the spring 36, the section 54 also having finger elements 70 extending in opposite directions away from the terminal whereby to engage with the inner surfaces of walls 76 of the holder when the terminal is inserted therein. The terminal also includes a pair of shoulders 60 with elements 62 perpendicular thereto for locating in notches (78, Fig. 10, not shown) in side walls 74 in the holder 72. When the terminal is in position, the end of section 54 is received in a slot 84 in a mounting plate 10 of a machine in which the brush 34 operates.
Patent GB-146542-A (GB)
Title: Improvements in and relating to gate controlling mechanism for cookers for oil bearing material
IPC: C11B1/04
Filed: 1920-07-05
Abstract: 146,542. Buckeye Iron & Brass Works, (Assignees of Trace, R. A.). April 19, 1917, [Convention date]. Fats and fatty oils, extracting.- In the apparatus described in Specification 146,541 for opening and closing the outlets of the upper kettles in proper sequence, the driving belt B is moved back to the active pulley 5 automatically instead of by hand, and this return is prevented until the cotton seed or other material in the lowest kettle 2 has been removed to a certain level. The belt-shifting means comprise a fork 7 on a sliding rod 8, connected through a bell-crank lever 10 and a link 11 with a pivoted lever 13, having pivoted on a pin 15 a weighted pawl 16 with a flange 17 engaging the edge of the lever. A spring 9 tends to keep the belt on the active pulley 5. Before the lug 37 on the chain 24 contacts with the arm 40 to open the outlet 43 of the kettle 3, it meets a lug 36 and raises a weighted lever 32 about a pivot 33, so that the end 35 rooks and drops below the pawl 16, which returns to the position shown. When the lug 37 has passed the lug 36, the weight 34 returns the lever 32, but as the flange 17 prevents rocking of the pawl 16, the lower end of the arm 13 is pushed to the right and the belt is forced on to the idle pulley 6. During this movement a pin 20, mounted in a slot 47 in the lever 13, moves beneath a finger 18 turning freely on a shaft 21 mounted in the wall of the cooker until, if the material in the kettle 2 is above the determined level, the pin is engaged by the notch 19, and so the lever 13 is held and the belt is returned on the idle pulley. As the material in the kettle 2 is removed, a blade 22 fast to the shaft 21 and resting on the material falls and turns the shaft, bringing an attached pin 22<1> against a lug 23 on the finger 18 and turning the latter until the pin 20 is released from the notch 19. The belt is then returned to the active pulley by the spring 9. Should the pan 2, after having been emptied, receive from the pan 3 during the next circuit of the chain 24 material insufficient to raise the level to the height necessary to disengage the pin 22<1> and lug 23, the pin 20 is not engaged by the notch 19 and the driving belt is pushed on to the idle pulley and at once returned. A spring 46 or other shock-absorber is preferably provided for each weighted arm 38 of the outlet gates 42, and a pin 30 on the guard 31 of the chain 24 to limit the drop of the lever 32.
Patent GB-237436-A (GB)
Title: Improvements in and relating to machines for harvesting potatoes
IPC: A01D17/12
Filed: 1924-08-08
Abstract: 237,436. Chapman, J. Aug. 8, 1924. Potato - harvesters. - The potatoes and soil are lifted from the ground by a scoop A having a front V-shaped projection a and turned-up sides a', its rear portion being either straight or inclined downwardly. Buckets C carried on an endless chain D driven by chaingearing from the travelling wheels L lift the potatoes and discharge them on to an inclined sieve M through which the soil falls, the potatoes travelling down the sieve to a sack or other collecting device.
Patent GB-147007-A (GB)
Title: Improvements in filing wrappers
IPC: B42F13/02
Filed: 1920-07-06
Abstract: 147,007. Battisti, E. Aug. 1, 1917, [Convention date]. Void [Published under Sect. 91 of the Act]. Cord files; sheets.-In a cord file, the papers, such as letters or deeds, are attached to devices which can be hooked over two strings or tapes passing through holes in a sliding clamp-strip and a strip attached to a bottom sheet. In the file shown in Fig. 1, the hooked devices consist of a strip 11 of cardboard or parchment which is gummed on the part 17 to the back of the paper 10 and is formed with lugs 12 which are brought to the front of the paper, the strings 1, 2 being slipped over the lugs and engaging the notches 13, 14. The strings pass through holes in a strip 4 of cardboard gummed to the bottom sheet 9, and pass also through holes in a metal clamp-strip 6 formed with lugs 18 round which the ends of the string are wrapped. The attachment-device shown in Fig. 2 consists of a wire 19 which is formed with hooks 15, 16 for engaging the strings and is secured to the paper 10 by means of a gummed strip 20.
Patent GB-303874-A (GB)
Title: Improvements in and relating to the creels of spinning frames and the like
IPC: D01H1/18
Filed: 1928-06-29
Abstract: 303,874. Eclipse Textile Devices, Inc., (Assignees of Hasbrouck, L. B.). Jan. 12, 1928, [Convention date]. Creel arrangements.-In spinning-frames the roving bobbins are suspended by means of a short rotatable holder from the upper board or the like of the creel, thereby dispensing with the step beatings required by skewers and regularizing the back draft normally caused by the irregular resistance to rotation of the bobbin. The holders comprise a sleeve 31 adapted to engage the bobbin Band connected to an upper sleeve 30 supported by balls 15 on a spherical race 13 carried by a bolt, 10 secured in the top rail C. The centre of curvature of the race is in the axis of the bobbin and well above the middle of the bobbin. The sleeve 31 is provided with a conical collar 37, preferably loose thereon, to centre the bobbin, and with a spring gripper 36. The bearing is protected from dust by a cap 23 and a disc 33 on the sleeve 31.
Patent GB-223650-A (GB)
Title: Improvements in vacuum electric tube devices
IPC: H01J1/13
Filed: 1923-07-24
Abstract: 223,650. Robinson, E. Y. July 24,1923. Thermionic valve circuits. - A filament heated by alternating current is provided with means for leading in the space current at more than two points so that unequal heating of the filament is reduced without appreciable impedance being offered to the space current. For this purpose one or more inductances are connected across the filament so as to prevent short-circuiting of the parts of the filament, and the corresponding connections to the inductances and filament are made at points at the same potential. As shown in Fig. 1, the mid-point 11 of a filament is connected with the mid-point 12 of an inductance 13 connected across the filament, and the point 12 is connected through a load circuit 4 with the anode. The filament may be of hair-pin or zig-zag shape, and the connections may be made at the bight or bights of the filament through one or more tensioning springs. In the arrangement shown in Fig. 5, the mid-point 11 is connected with the mid-point 12 of two inductances 13 through two inductances 30. which are coupled with the inductances 13 so that the space current at the tapping is twice that at either of the ends of the filament; or any other ratio of the space currents may be, produced. An arrangement of inductances for use with a filament having three tappings is also described. Small impedances such as variable inductances or resistances may be inserted in one or more of the space current connections so as to provide a fine adjustment of the space current flowing at any part of the filament. The filament may be mounted inside a tunnelled anode, and supported by cross-members on a frame as described in Specification 223,293, [Class 39 (i), Electric lamps, Arc &c.], and intermediate connections with the filament may be made by means of hooks mounted on the cross-members. Specification 195,691, [Class 39 (i), Electric lamps, Arc &c.], also is referred to.
Patent GB-796251-A (GB)
Title: Improvements in or relating to apparatus for magnetic recording and reproduction
IPC: G11B21/04
Filed: 1956-06-19
Abstract: 796,251. Magnetic recording and reproducing apparatus. TOCHIHARA, S. June 19, 1956 [June 20, 1955], No. 19010/56. Class 40 (2). Apparatus for magnetic recording and reproducing comprises a record sheet 1 with a magnetic coating on one side and visual information, such as a language translation, on the other, a glass plate 2 superposed over the latter side, and relatively moving transducer heads pressed against the magnetic coated side. In one embodiment a continuous record is made by four separate transducers a, b, c, d which are mounted on a turntable 5 and perform parallel record traces a<SP>1</SP>, b<SP>1</SP>, c<SP>1</SP>, d<SP>1</SP>, respectively, on a relatively moving record sheet 1, one trace commencing at the same instant as the previous one finishes. Straight traces of a similar kind may be made by transducers mounted as in Fig. 3. A zig-zag trace may be obtained by a reciprocating movement of the transducer, or a spiral one by moving the transducer relatively along a spiral path.
Patent GB-766586-A (GB)
Title: Arrangement for regulating the voltage-current characteristic of alternating currentapparatus, particularly for stabilising the current apparatus, particularly for stabilising the current and reducing the open-circuit voltage of welding transformers
IPC: B23K9/10
Filed: 1954-06-29
Abstract: 766,586. Wleding supply systems. NIFTRIK, J. W. J. VAN, and VRIES, A. DE. June 29, 1954, No. 19024/54. Class 38 (4). The invention relates to a welding supply system having a saturable reactor 2 in series with the welding transformer 6 and the reactorcontrol-winding 3 energized by the rectified welding voltage. According to the invention the secondary of a current transformer 7 is connected in series with the welding voltage supply to the rectifier 5 feeding the reactor-controlwinding 3, to cause an increase in welding voltage when the load circuit is closed. The current transformer is arranged to saturate, so that as the welding current increases, the voltage characteristic assumes the normal droop, after the initial rise, Fig. 4 (not shown). On open-circuit the current transformer secondary acts as a reactor in the control circuit and only its magnetizing current flows through the reactor-control-winding 3 so that the reactor 2 has a very high no-load impedance. This magnetizing current may be eliminated by applying an opposing voltage to the current transformer from a tertiary winding 8 on the welding transformer, Fig. 5 (not shown).
Patent GB-223962-A (GB)
Title: A new and improved apparatus for sterilizing horticultural bulbs
IPC: A01M17/00
Filed: 1923-07-25
Abstract: 223,962. Martel, E. July 25, 1923. Stoves for disinfecting.-Portable apparatus for sterilizing bulbs by means of hot water comprises a receptacle A for the water, a stand B for the receptacle, means for heating the water, and cages F, G, H to receive the bulbs. The receptacle A is provided with a cover N, a thermometer L, and a draining-off tap M. The water may be heated by oil heaters GO, an oil store J being provided for automatic feeding; or it may be heated by gas. The sides and bottom of the cages may be of perforated zinc, or copper, &c. An overhead track fitted with runners, pulleys, and chains may be provided to facilitate movement of the loaded cages into and out of the receptacle.
Patent GB-572348-A (GB)
Title: Improvements in or relating to safety devices for presses, punches and like machines
IPC: F16P3/04
Filed: 1943-11-16
Abstract: 572,348. Machinery safety devices. FRENCH & SONS, Ltd., T., and WILDE, C. E. Nov. 16, 1943, No. 19067. [Class 80 (iv)] Relates to safety devices for presses, punches and like machines in which a feeler member movable with and in advance of the ram, punch &c. is adapted, when obstructed by an operator's hand, to produce relative movement between the ram and feeler to actuate means such as a catch-pawl to check the movement of the ram. According to the invention, the feeler member and stop means are resiliently coupled by means arranged positively to move the stop means. The ram b carries a cross-head a from each end of which depends a bracket d located near a rack e secured to the side of the ram guides c. In each bracket is pivotally mounted a lever g movable between stops h, i and adapted to act on a pivoted pawl f so as to bring it into engagement with a rack e. Carried from the end of each lever by rods j is a feeler k in the form of a plate closely surrounding the tool or ram b. The rods j are guided at l and pass loosely through the levers g, a spring m being interposed between each lever and a nut on the rod. Obstruction of feeler k tilts the levers g to throw the pawls into engagement with the racks. In a modification, the levers g may actuate a check valve of a hydraulic system wherein the cylinders would be on the cross-head a and the pistons connected to brackets fixed to the guides c. Means may be provided, e.g. a clutch or switch, to cut off the power when the movement of the ram is checked. Visual or audible indication means may be provided to indicate when the safety device has been brought into operation.
Patent GB-974705-A (GB)
Title: Process for producing oriented silicon steel
IPC: C21D1/76
Filed: 1962-05-17
Abstract: (100)[001] orientated silicon iron (1-8% of silicon) is made by etching the surface of the cold reduced sheet to remove a significant amount of material but not above 1% by weight thereof and then annealing the etched sheet in a single uninterrupted step at 1100-1425  DEG C. in a non-carburizing atmosphere free from oxygen water vapour and oxidizing substances which is capable of reducing silica on the surface of the sheet at the annealing temperature, e.g. dry hydrogen with or without nickel vapour, or high vacuum.  The etching step is carried out as described in Specification 882,810. The annealing may be carried out on a coil or a stack the sheets being separated by a layer of an inert inorganic refractory material, e.g. zirconia, alumina or magnesium oxide. Specification 945,581 also is referred to.
Patent GB-1141865-A (GB)
Title: Improvements in or relating to prefabricated double walled masonry
IPC: E04C2/04
Filed: 1966-05-02
Abstract: 1,141,865. Brick panels. A. BRANDESTINI. 2 May, 1966 [3 May, 1965], No. 19126/66. Heading E1B. A prefabricated double-skinner wall panel comprises an inner skin of checker-bricks or hollow blocks, which are laid against a supporting surface which is fitted backwards slightly from the vertical, and reinforced by bars, and an outer skin of facing bricks or expanded clay plates, which is either screwed to the inner skin via wood screws and nylon plugs, with an interposed mat of rock wool or expanded polystyrene, or is bonded to the inner skin by a layer of foamed polyurethane. The screw heads may be covered with a synthetic plastic material to avoid discolouration of the outer panel surface, and the outer skin may be plastered.
Patent GB-1532582-A (GB)
Title: Method of tempering a glass product
IPC: C03B27/03
Filed: 1977-05-06
Abstract: 1532582 Tempering glass ASAHI GLASS CO Ltd 6 May 1977 [7 May 1976] 19130/77 Heading C1M A method of tempering glass product comprises quenching the product from a temperature higher than the strain point and lower than the softening point by dipping it into a liquid coolant and applying ultrasonic vibration, preferably of a frequency higher than 16 kHz, to said liquid coolant or to the glass product during the quenching operation. The ultrasonic vibration may be applied with a different intensity to different parts of the glass product to impart a differential tempering to selected parts of the glass product. The glass product may be in the form of a plate which is dipped edgewise into the coolant, the surfaces adjacent the first edge of said glass product to contact the liquid coolant when it is dipped being covered or masked with a layer of heat insulating protective material.