baber/WOPTO huggingface dataset:
Patent GB-579675-A (GB)
Title: Improvements in the manufacture of n-butyl vinyl ether
Filed: 1943-11-22
Abstract: n-Butyl vinyl ether is prepared by contacting acetylene and n-butyl alcohol with a potassium alkoxide dissolved or suspended in a medium consisting solely or mainly of a secondary or tertiary aromatic amine at a pressure not exceeding 9 lbs. per square inch above atmospheric and a temperature of about 150-200 DEG  C.  The reaction is preferably effected in an oxygen-free atmosphere and in the presence of N : N1-diphenyl - p - phenylenediamine as an anti-oxidant.  In the example, a mixture of a solution of potassium in n-butyl alcohol, and diethyl aniline together with a little N : N1-diphenyl-p-phenylenediamine is placed in a reaction tower fitted with a fractionating column, a stream of nitrogen being passed through the tower.  The contents of the tower are heated and the nitrogen flow gradually replaced by a preheated mixture of n-butyl alcohol vapour and acetylene under slight pressure.  The reaction products pass into the fractionating column and an azeotrope containing mainly n-butyl vinyl ether separated from unreacted n-butyl alcohol which is recycled.  The ether may be purified by long refluxing over sodium followed by fractional distillation.  The process may be rendered continuous by replacing the catalyst as it becomes spent. Other specified amines which may be used as media are methylaniline, dimethylaniline, ethylaniline, benzylaniline or dibenzylaniline.
Patent GB-500931-A (GB)
Title: Improvements in seed drills and like distributors
IPC: A01C15/16
Filed: 1938-07-02
Abstract: 500,931. Distributers for seeds. INTERNATIONAL HARVESTER CO. OF GREAT BRITAIN, Ltd. (international Harvester Co.) July 2, 1838, No. 19634. [Class 6 (i)] A seed distributer comprises a hopper 1 having a slotted bottom 3 leading to a chamber 20 containing a rotary wheel 6 which delivers the seed to a tube 8. In order to prevent seeds from blocking the upper part of the chamber 20 the hopper 1 is provided with a rotary agitator consisting of arms 11 having resilient extensions 12 which are of sufficient length to pass through the slots in the bottom of the hopper and to extend to a point near the wheel 6. As the arms rotate the extensions become bent against the sides of the hopper and then straighten out as they pass through the slots in the bottom and dislodge any seeds that have packed together in the chamber 20. A separate chamber 20 with a delivery wheel 6 may be provided beneath each slot in the hopper, and a series of arms 11, one for each slot, may be provided on the shaft 10. The extensions 12 may consist of short lengths of rubber tubing or of coiled springs or of flat, blades having collars to fit the arms 11. Alternatively the ends of the arms 11 may be pressed or hammered to form thin resilient blades. The hopper openings may be regulated by sliding plates 9.
Patent GB-228458-A (GB)
Title: Improvements in and relating to automatic poultry trap-nests
IPC: A01K31/16
Filed: 1924-08-19
Abstract: 228,458. Morgan, F. S. Aug. 19, 1924. Trap nests.-The laying compartment is provided with counterweighted entry and exit doors 3, 5, mounted on pivots 9, 23 near their upper and lower ends respectively. The entry door is normally maintained in the open position, Fig. 1, by a pin 12 on it engaging in a recess 10 on an arm 11 projecting vertically from the bottom 4 of the compartment which is mounted towards its front end on a pivot 13. After the fowl has entered the nest the door 3 is released by the movement of the bottom 4 and takes up a vertical position closing the inlet. The door is locked in the closed position by a pin 17 engaging a catch 18 on a rod pivoted at 19 on the bottom of the compartment. On an egg being laid it rolls into a skeleton cup 20 carried by a counterweighted lever 6 which then tilts, freeing a projection 15 on the counterweight of the exit door 5. The fowl then moves towards and against the exit door, which is of skeleton formation, pressing it down, permitting the egg cup lever 6, which has been held by a stop 32, to tilt and to deposit the egg in a compartment 7, and also pulling up the door 3 into its normal position by a link 25 having a lost motion connection with the upper end of the door. After the fowl has escaped the door 5 swings back to its closed position. In a modification the catch 18 is dispensed with, the door 3 beng locked by the pins 12 engaging the front of the arm 11. The device may be used as an ordinary trap nest by putting the exit door 5 out of operation by removing the stop 32. or as an ordinary nest by removing the door 3.
Patent GB-337024-A (GB)
Title: Improvements in or relating to gramophones and the like
IPC: G11B3/08
Filed: 1929-06-26
Abstract: 337,024. West, C. F. M. June 26, 1929. Raising, positioning. and lowering sound-boxes. - The stylus of a gramophone, particularly intended for educational purposes, is raised and lowered when desired by a rod 3 located directly above and spaced parallel to the turntable. As shown, the rod 3 is mounted eccentrically in discs carried by bearings fixed to the top of the gramohone casing. The rod 3 is screwthreaded along its length and one of the supporting discs has a handle 6. Each time the letter is rotated, the rod 3 engages a member 2 fixed to the tone-arm so that the stylus is raised from the record and then replaced on the record at an earlier point. A word, or a short phrase, may thus be repeated as often as desired. A nut 7 upon the rod 3 forms a marker to facilitate restarting at any desired point. In a modification, the rod 3, is cam-shaped and the backward motion of the tone-arm each time the rod 3 is operated is obtained by sliding the rod 3 axially against spring action. Alternatively, the backward movement may be obtained by cam action between the parts 2, 3.
Patent GB-189173-A (GB)
Title: Improvements in or relating to the vaporization or gasification of fuel for internal combustion engines
IPC: F02M21/10
Filed: 1921-07-22
Abstract: 189,173. Pickard, W. July 22, 1921. Vaporizers, external.- In a carburettor for internal-combustion engines, hot exhaust gases are led from the engine and supplied to a tank a, provided with water and liquid hydrocarbon, by means of a pipe b and a tubular worm e, the mixture then passing to a spray nozzle, i connected to the induction pipe of the engine. The liquid hydrocarbon and water supplies to the tank a are controlled by float chambers, not shown, and the tank a is also provided with a gauze diaphragm g. If desired, compressed air may also be led to the casing a below the level of the water in addition to the exhaust gases.
Patent GB-1263205-A (GB)
Title: Improvements in or relating to double-chain-stitch sewing machines
IPC: D05B65/00
Filed: 1970-04-24
Abstract: 1,263,205. Sewing machines. G. M. PFAFF A.G. 24 April, 1970 [26 April, 1969], No. 19746/70. Heading D1G. A double-chain-stitch sewing machine includes a thread-carrying oscillating looper movable in a straight or elliptical path and having a support 3 with a thread guide bore 7 therein and a beak 4, preferably with a thread guide bore 5 and thread guide groove 6; extending therefrom, a thread catcher 16 forming part of a cutting device and operable from a rest position to a cutting position, when the catcher 16 engages a cutting edge, for drawing out of the looper thread, a spring urged thread clamping plate 17 pivoted at 10 to the support 3 about an axis which is parallel to the axis of the bore 7 and having a thread guide bore 11 registering with the bore 7 during normal operation of the machine but being displaced relative thereto to clamp the thread 20 between the plate 17 and the support 3 when the plate is deflected, as by the action of the camming edge 15 on the abutment 14, as the thread catcher is displaced from its rest to its cutting position. The end positions of the plate 17 are determined by a slot 12 in the plate through which passes a screw 19 for adjusting the tension of the spring 18. In operation after the thread 20 has been cut a length of thread is retained on the looper of a sufficient length to sew a number of starting stitches after which the tension in the thread 20, between the plate 17 and a thread take up before the bore 11, pivots the plate 17 to its position with the bores 7 and 11 aligned.
Patent GB-983823-A (GB)
Title: Electric analog multiplier
IPC: G06G7/163
Filed: 1963-05-17
Abstract: 983, 823. Electric analogue calculating. ROBERTSHAW CONTROLS CO. May 17, 1963 [June 15, 1962], No. 19774/63. Heading G4G. An analogue multiplier comprises a voltage dividing network connected between an input terminal (to which a potential representing one variable is applied) and a reference terminal and having an intermediate output terminal, at least part of the network consisting of a radiant energy responsive variable impedance device disposed so as to receive radiant energy from a source, and a circuit whereby the intensity of radiant energy by the source may be varied in accordance with the value of another variable to be multiplied, whereby the potential on the output terminal represents a multiplicative function of the variables. In Fig. 1 a voltage divider comprising a fixed resistance R1 and a photosensitive resistance Rp is supplied with a square wave derived from R. F. generator 22 and clipper circuit 24. The junction 12 of the two resistances is coupled via capacitor C1 to a rectifying and integrating circuit and to an input terminal 40 of a D.C. amplifier 30. The other input terminal 42 of amplifier 30 is at a potential proportional to one of the input variables supplied at terminal 48, and the output of amplifier 30 controls the intensity of a neon bulb 60 which illuminates the resistance Rp. This circuit is self-adjusting so that the ratio of the voltage divider is made proportional to the input variable supplied at terminal 48. The second input variable is supplied at terminal 68 and the output, proportional to the product of the two inputs, is taken from terminal 64. Terminals 68 and 64 are coupled to the voltage divider through low pass filters which prevent the square wave from interfering with the input and output signals. In an alternative circuit, Fig. 2 (not shown), resistance R1 is replaced by a photosensitive resistance illuminated by a second neon bulb controlled by the output of amplifier 30 through an inverter so that its resistance changes in the opposite sense to the change in resistance of Rp.
Patent GB-576482-A (GB)
Title: Improvements in forced feed lubrication systems
IPC: F16N29/00
Filed: 1943-11-26
Abstract: 576,482. Fire-extinguishing sprinklers. TECALEMIT, Ltd., and LE CLAIR, C. C. S. Nov. 26, 1943, Nos. 19809 and 20887. [Class 47 (ii)] [Also in Groups XXIX and XXXIV] In a system for supplying liquid under pressure to a number of points through restricting orifices, means are provided in each line for indicating the pressure drop caused by the restricting orifice. Each control device, Fig. 6, has an inlet 8 with a port 11 engaged by the bevelled end 14 of a screwed plug 13 having a squared end 16 and lock-nut 15, a hollow cap 17 being provided. The port 11 leads to a passage 20, which connects with a pressure gauge 22 and an orifice 9. The control devices are mounted together on one panel of a casing 4, the panel being apertured to receive the faces of the gauges and the caps 17. In a modification, Fig. 7, the plug is replaced by a screwed spindle 27 having a cruciform stem 33 on which are loosely mounted thick flat washers 39 and alternate thin, resilient, corrugated washers 38 so as to provide a large number of passages, the total areas of which are varied by adjustment of the spindle 27. In the limit, the washers 38 may be so flattened as to completely seal the inlet 30. The restricting orifice may also take the form of a flat disc 43, Fig. 9, opposite the inlet port 42, or the disc may have a conical tip as shown at 45.
Patent GB-949423-A (GB)
Title: Radio receiving system for biaural and monaural signals
IPC: H04B1/16
Filed: 1962-05-23
Abstract: 949,423. Stereophonic broadcasting systems. MOTOROLA Inc. May 23, 1962 [June 14, 1961], No. 19873/62. Heading H4L. Relates to a radio receiver for binaural signals of the type in which the L+R signal frequency modulates a main carrier and the L - R signal amplitude modulates a subcarrier which in turn frequency modulates the main carrier, the subcarrier being suppressed and a pilot frequency of half the subcarrier frequency transmitted. As shown, the limited I.F. signal from 13 is supplied to a conventional frequency discriminator 14 whose output signal is supplied via traps 35, 36, which remove any higher frequency signals which may be present for other purposes, to the stereophonic signal deriving circuit. A filter 39 to 43 selects the pilot signal which is amplified at 44 and supplied to a frequency-doubler 46. In the absence of an input signal the valve 46 is biased to cut-off so that a neon bulb 54 shows when a stereophonic transmission is received. The reconstituted subcarrier is supplied to terminal 57 for combination with the suppressed carrier L - R signal and this signal is demodulated by oppositely poled diodes 59, 60. Thus in diode 59 the L - R signal is detected and combined with the L+R signal across load resistor 61 giving the L signal, and in the diode 59 the - (LR) signal is detected and combined with L+R giving the resultant R signal across load resistor 63. The L and R signals are supplied via respective de-emphasis circuits 67, 68 and 71, 72 and amplifiers 69, 73 to the load-speakers 70, 74. Monaural reception is provided without switching by ensuring that the diodes 59, 60 are biased to be conducting. In a modification, Fig. 2 (not shown), push-pull detector circuits are used for the L and R channels and the regenerated subcarrier is supplied in opposite phases to each diode of the push-pull detector. This arrangement ensures that subcarrier components are balanced out in the output stage. In a further arrangement, Fig. 3 (not shown), triode detectors replace the diodes 59, 60 and are fed with the regenerated subcarrier in opposite phase. This provides high level signals sufficient to drive pentode power amplifiers, with consequent simplification of circuitry.
Patent GB-257087-A (GB)
Title: Improvements in means for support of aero engines
IPC: B64D27/04
Filed: 1925-08-08
Abstract: 257,087. Royce, F. H., and Elliott, A. G. Aug. 8, 1925. Propelling. - An aircraft engine, particularly one with a cruciform arrangement of cylinders is secured to the front of an aeroplone by brackets connected at their apices by trunnions on the crank case. There may be a trunnion on each side and one above or below the engine, or both above and below, or there may be one on each side and a tubular projection on the back to take torsion. Three triangular brackets c, c' are shown connected to the tapered ends of three trunnions b, bb by nuts b<2>. The rear members g of the brackets c are secured to the aeroplane frame by split clips h and tapered tubular extensions on the members g engage tapered sockets in forgings f on the bracket c<1>.
Patent GB-886217-A (GB)
Title: Process for the manufacture of reaction products from phosphoric acid and sodium carbonate
IPC: C01B25/30
Filed: 1960-06-07
Abstract: Sodium phosphates are prepared by adding a portion of sodium carbonate to an aqueous solution or suspension of disodium orthophosphate (from a previous batch or prepared by neutralizing phosphoric acid with sodium carbonate while adding water), neutralizing the sodium carbonate with phosphoric acid containing at least 40% H3PO4, adding a second portion of sodium carbonate, neutralizing this with a second portion of phosphoric acid, and so on, the amount of the final portion of phosphoric acid determining whether the product is wholly disodium orthophosphate or a mixture of mono-and di-sodium orthophosphates. The neutralization is carried out at 80 DEG  to 95 DEG C. and with constant stirring.  The crystalline magma so obtained may be cooled to yield disodium orthophosphate or a mixture of mono- and di-sodium orthophosphates, containing water of crystallization; alternatively, when the product is disodium orthophosphate, it may be heated to above 200 DEG C. to obtain tetrasodium pyrophosphate, and when it contains monosodium and disodium orthophosphates in a molar ratio of 1 :2 it may be heated to above 300 DEG C. to obtain sodium tripolyphosphate.  Examples are given.
Patent GB-151440-A (GB)
Title: Improvements in or relating to pulverizers
IPC: B02C13/00
Filed: 1919-08-16
Abstract: 151,440. Davis, A. E. Aug. 16, 1919. Impact pulverizers.-Pulverizers of the rotating-beater type are provided with one or more separate chambers divided by a screen into two compartments one of which is open to the pulverizing-chamber and the other to a box &c. in connexion with suction-producing apparatus. As shown, the open bottoms of the two compartments of the chamber c containing the screen d are situated over slots e, e<1> opening into the pulverizing-chamber a and the suction-box a<1> respectively. The frame d<1>, d<2> of the screen engages in grooves in the narrower sides of the chamber c, the top d" of which is secured by nuts g so that it can be readily detached when it is desired to withdraw the screen. The chamber c may be connected to the chamber a so that it can be attached thereto and detached therefrom by a sliding motion. A depending baffle f near the slot e prevents particles of coal &c. from being driven directly against the screen d. Angleiron bars d<3> secure the top bar d<1> of the screen frame to the cover d<4>. Or the top of the chamber c may be closed and one of the narrower sides of the chamber be detachable. The pulverizing- chamber a has a sliding bottom n operated by a handle i to allow the chamber to be emptied.
Patent GB-1096777-A (GB)
Title: Improvements in rectifying semi-conductor bodies
IPC: H01L29/10
Filed: 1965-05-13
Abstract: 1,096,777. Semiconductor devices. ALLMNNA SVENSKA ELEKTRISKA A.G. May 13, 1965 [May 15, 1964], No. 20219/65. Heading H1K. A PNPN structure for use in a controlled rectifier comprises heavily doped P and N outer zones separated by a more lightly doped middle section comprising a central layer for which the product of thickness and impurity concentration is less than 10<SP>12</SP> atoms/cm<SP>2</SP> with layers at its opposite faces, between 1 and 20% of the thickness of the central layer, for which the same product lies between 2 x 10<SP>11</SP> and 2 x 10<SP>12</SP> atoms/cm<SP>2</SP>. If the intermediately doped layers are of opposite conductivity types the three layers alone constitute the middle section but if they are of the same type a fourth layer is disposed between one of the intermediately doped layers and the outer zone. A typical device (Fig. 5) comprising such a structure is made by epitaxially depositing N-type silicon layers 34, 35, 50Á thick on opposed faces of an N type silicon wafer doped with 4 x 10<SP>12</SP> donor atoms/cc., diffusing gallium into the layers to form P regions 36, 38, and forming the outer N+ and P+ zones 37, 40 by alloying gold-antimony 39 and aluminium 40 respectively to these regions. In the last mentioned process a molybdenum electrode 42 is attached. Epitaxial deposition is from a mixture of hydrogen, silicon tetrachloride, and the tri- or pentachloride of phosphorus. The zone dimensions and doping of this and other suitable structures are detailed in the Specification.
Patent GB-1503886-A (GB)
Title: Nonalcoholic beverages
IPC: A23L2/52
Filed: 1976-05-17
Abstract: 1503886 Non-alcoholic beverages containing galactose ROUSSEL UCLAF 17 May 1976 [16 May 1975] 20311/76 Heading C6E A non-alcoholic beverage consists essentially of galactose, riboflavin, nicotinic acid and mineral compounds exemplified by potassium chloride, monopotassium phosphate, dipotassium phosphate, potassium L-aspartate, potassium glutamate, sodium chloride, disodium phosphate, sodium glycerophosphate, sodium glutamate, monobasic magnesium phosphate and/or magnesium chloride. Preferred beverages contain 35 g/l galactose, 15-65 Ág riboflavin and 35-50 Ág nicotinic acid per gram of galactose, 480-1800 mg/l potassium, 48-480 mg/l sodium, 128-1080 mg/l phosphorus and 40-144 mg/l magnesium in an aqueous carbonated diluent. The following ingredients may be included: fructose, sucrose and/or maltitol, apricot or bilberry extract as source of riboflavin or nicotinic acid, L-aspartic acid and/or glutamic acid (as the free acids or salts of sodium or potassium), and flavouring agent (citric acid). The beverage may be prepared from the solid ingredients by mixing them with a small quantity of water to produce a concentrated solution and subsequently diluting the concentrated solution to the volume desired.
Patent GB-222458-A (GB)
Title: Improvements relating to deoxidizing apparatus for tanks for containing electrical or other apparatus
IPC: H01F27/14
Filed: 1924-08-28
Abstract: 222,458. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of Rodman, C. J., and Hill, L. H.). Sept. 28, 1923, [Convention date]. Oil-switches; cases.-A deoxidizing apparatus for tanks for electrical and other apparatus comprises a casing 10 provided with a perforated container 13 filled with deoxidizing material, the arrangement being such that any fluid exchanged between the space 9 above the oil and the atmosphere must traverse the container. The container is disposed longitudinally in the casing and serves as a partition dividing the casing into compartments 16, 17, the former of which communicates with the space above the oil in the tank through a screened opening 18, while the compartment 17 communicates with the atmosphere through a relief valve 19. The valve comprises a receptacle containing liquid, such as mercury, constituting a liquid seal, and inlet and outlet tubes 22, 23, the latter which communicates with the atmosphere, extending below the surface of the liquid. With this arrangement, air may be drawn into the tank at a lower pressure than that at which it is expelled from the tank. In a modification the container for the deoxidizing material is provided with a hollow bore which communicates with the opening in the tank. Two such containers may be provided in the casing 10.
Patent GB-1138307-A (GB)
Title: Improved coking impregnant for carbon
Inventor: GREIDER CLARENCE EDWIN
IPC: C04B35/52
Filed: 1966-05-09
Abstract: 1,138,307. Liquid furfural solutions. UNION CARBIDE CORP. 9 May, 1966, No. 20441/66. Heading C3P. A liquid solution at 21‹ C. consists of furfural, 10-70% by wt. of coal tar pitch of m.p. below 110‹ C. and/or coal tar of S.G. not less than 1À1, the pitch and/or tar containing not more than 5 % of materials insoluble in furfural, and an acid catalyst in amount which provides thermosetting of the liquid on heating to elevated temperatures. The solution is used as a carbonizable impregnant for lowering the permeability of carbon, e.g. graphite articles. The catalyst may be diethyl sulphate benzene or toluene sulphonyl chloride or methyl toluene sulphonate.
Patent GB-261102-A (GB)
Title: Improvements in apparatus for treating fish offal for the preparation of fish meal
IPC: A23K1/10
Filed: 1925-08-14
Abstract: 261,102. Phillips, E. B., West, W., and Parr, W. S. Aug. 14, 1925. Doors.-A steam cooker has a conical bottom e provided with discharge apertures for two compartments adapted to be closed alternately by a flap door f actuated by a shaft g, The door is clamped in the one or the other closed position by a wedge at the end of a travelling screw i engaging one or other of two wedge surfaces f<1> on the door. Specifications 103,493, 238,720, and 247,437, [all in Class 28 (i), Bread-making &c.], are referred to.