baber/WOPTO huggingface dataset:
Patent GB-421706-A (GB)
Title: Improvements in telephone systems
IPC: H04M1/58
Filed: 1933-10-02
Abstract: 421,706. Anti - side - tone circuits. LOWE, J. P., 7, Montpelier, Edinburgh. Oct. 2, 1933, No. 10029/34. Divided out of 408,264. [Class 40 (iv)] An anti-side-tone circuit comprises two transformers one of which has a line winding, the transmitter and receiver being connected in two local circuits, each of which includes a winding on each of the transformers. As shown in Fig. 4, currents produced in the transmitter circuit B, C, T, CT induce currents in winding A which are sent to line but induce opposing currents in the receiver circuit R, D, E, the degree of balance being adjustable by means of a tapped network r. Modifications of this system are shown in which the receiver is in parallel instead of in series with the coils D, E, in which the transmitter is fed from a local battery and in which the system is applied to an operator's set. In a further modification, Fig. 6, the degree of side tone reduction is adjusted by means of tapping points on winding E.
Patent GB-673964-A (GB)
Title: Process for treating textile fibres of substantially uniform length
IPC: D01G99/00
Filed: 1949-04-13
Abstract: 673,964. Treating textile fibres. BARRACLOUGH, A. May 1, 1950 [April 13, 1949], No. 10078/49. Class 120(iii) A process of treating textile fibres of substantially uniform length consists in passing the fibres, which have been previously scoured, through a number of normal gilling operations to separate the fibres and arrange them into a sliver which is then subjected to a series of rotary gilling operations by being passed over rotary swifts so arranged as to open up the fibres still further and arrange them in parallel formation and draft them into a sliver of such weight per unit length that it is suitable for spinning with or. without further drawing. Specification 673,965 is referred to.
Patent GB-1030105-A (GB)
Title: Improvements relating to electric lampholders
Inventor: JONES ALBERT EDWARD
IPC: F21V21/002
Filed: 1964-03-11
Abstract: 1,030,105. Lampholders. FLAGGRAND Ltd. Dec. 17, 1964 [March 11, 1964], No. 10202/64. Heading H2E. After a cable has been positioned in a recess 6 (Fig. 1) provided in a lamp holder 4, a cap 12 with a corresponding recess 13 is placed over the cable and secured to the body portion 4 by means of adhesive, or a second stage curing operation. The body portion 4 may be provided with flanges 7 to co-operate with recesses provided in the cap 12, to give a waterproof joint, and an inwardly projecting lip 11 (Fig. 3, not shown) may be provided at the open end of the body 4, to grip the lamp cap, for a similar purpose. Recesses 17 may be formed at the junction of the two parts for suspension hooks. The body portion 4 may be made of natural or synthetic rubber, or of thermoplastic material by injection or compression moulding processes, and the central portion 8 carrying the contact screws may be made of nylon. In assembling the holder the cable may be attached to the contact screws on the portion 8, before it is secured in the body 4.
Patent GB-365422-A (GB)
Title: Improvements in and relating to methods of forming an insulating layer on metals
IPC: C23C22/70
Filed: 1931-04-07
Abstract: An insulating layer is formed on metal by immersing the metal in a molten fluoride bath, the metal being withdrawn and allowed to cool in a non-oxidizing atmosphere.  Copper wire may be treated in a bath of molten potassium fluoride and withdrawn and allowed p  to cool in an atmosphere of carbon dioxide.  It is stated that the insulating layer consists of a layer of the fluoride of the metal covered by a thin layer of the fluoride used as the bath.  The coating may be effected electrolytically by passing a current through the metal and the fused salt.
Patent GB-449830-A (GB)
Title: Improvements in sight testing apparatus
IPC: A61B3/103
Filed: 1935-04-03
Abstract: 449,830. Sight - - testing apparatus. REASON, R. E., and KAPELLA, Ltd., 104, Stoughton Street, Leicester. April 3, 1935, No. 10312. [Class 97 (i)] In objective apparatus comprising a target system for forming an image on the retina, an observing system for viewing the image, and a fixation system for forming on the retina another image for the purpose of fixing the subject's accommodation or direction of sight, means are provided for illuminating the fixation image with light limited to a particular section of the spectrum and for viewing the target image with light limited to another section of the spectrum, in order to avoid, in the observation field, " ghosts " formed by reflection at any surface common to the observing and fixation systems. The optometer shown consists of a source of light 1 and condensers 3, 4 illuminating a target 2 from which light passes through a small aperture 5 to a mirror 7 and thence through a lens 6 and reversing prism 8 to form a target image at 9, this image being imaged by a lens 10 and the eye lens 11 on the retina. This image is projected for viewing by the lenses 11, 10, 6 through an aperture in the mirror 7 onto an eyepiece graticule 12. A fixation object 15 is illuminated by the source 1 and condensers 17, 18 and a virtual image of this object is formed on the axis of the lens 10 by a transparent mirror 19. To avoid ghosts caused by reflections at the surfaces of the lenses 10, 11, a filter 20 is mounted in the observing system and a filter 21 in the fixation system, these filters being preferably minusblue and blue respectively. Instead of mounting the observing filter at 20, a filter may be provided adjacent the graticule 12, in which case a similar filter 22 is preferably provided in the target system to reduce the brightness of the target image. Specifications 413,029, 430,761, and 437,764 are referred to.
Patent GB-573851-A (GB)
Title: A new or improved guard for power presses and like machines
IPC: F16P3/04
Filed: 1943-06-26
Abstract: 573,851. Machinery guards. HACKETT, A. G. June 26,1943, No. 10386. [Class 80 (iv)] Consists in a guard for power presses and like machines which must be in guarding position before the machine can be started. The press has a body 10 and base 11, and the guard is mounted on two vertical pillars 12, 13 freely mounted at their lower ends on a spindle 14 rotatable in a bracket 15. At their upper ends the pillars are secured by nuts 17 to horizontal rods 16 projecting from the body 10. An upper guard member 20 is keyed to a spindle 19 rotatable in the pillars and may comprise a transparent window 21. When open, the guard is maintained in an inwardly directed position by a spring 22, Fig. 3, and it is brought to closed position by a handle 23, Fig. 2. A link 24 is pivoted to the guard and to a block 25 slidable in the pillar 13 and having a lug 30. A lower guard member 27 is keyed to the bottom spindle 14, to which is also keyed a crank arm 28 adapted to be engaged by a finger 29 on the upper guard. A lever 31 keyed on the spindle 14 is connected by a link 32 to a lever 33 having a stop 34 which projects into the path of a shoulder 35 on a rod 36 which actuates the clutch or a valve. A spring normally holds guard 27 open and the stop 34 in the path of the shoulder 35. In closing the guard 20 by hand, the block 25 is moved downwardly to carry the lug 30 out of the path of the arm 28 which is ultimately engaged by the finger 29 to close the guard 27. The angular movement thus imparted to spindle 14 withdraws the stop 34 and permits starting of the machine. During running, neither guard can be opened. After completion of a stroke, the spindle is allowed to return to open the bottom guard which, as it opens, releases the lug 30 from the arm 28 and permits the top guard 20 to open under spring action. The space at each side of the press may be closed by hinged gates 37 hinged at their rear ends and locked to the pillars 12, 13. To give free access for tool changing or setting, the nuts 17 are removed and the pillars and guards swung outwardly without affecting the safety stop 34. If the rod 36 be actuated by hand, one hand must be used for closing the guard and the other for operating the clutch or valve and therefore both hands are occupied when starting.
Patent GB-559145-A (GB)
Title: Improvements relating to fastening devices
IPC: F16B5/10
Filed: 1942-07-24
Abstract: 559,145. Locking screws &c. SUMMERS, J. M. July 24 1942, No. 10406. Convention date, Nov. 7, 1941. [Classes 44 and 89 (i)] [Also in Group XXII] Members such as sheets forming parts of aeroplanes are connected by screw fastenings having a locking device integral with one of the parts and released automatically on application of the box spanner or other rotating tool. A sodket 21 is secured in a hole in one of the sheets 13 and an elongated socket 16 is secured in the sheet 12. A headed stud 27 is mounted in the socket 21 and carries a sleeve 41 with a two start thread engaged by nut segments 19, 20 on the socket 16. The sleeve 41 is secured in the hollow shank 26 by riveting over at 44 further riveting at 44' securing a disc 37 that confines a spring 29 engaging a crossbar 32 engaging slots in the shank in the sleeve 41 and in the underside of the socket 21 thus locking the screw from rotation. Then the driver 36 is inserted in the recess in the head of the stud to effect rotation the point engages a recess 31 in the crossbar 32 depressing it to clear the slots in the socket. A projection 33 on the crossbar is engaged by the spring to keep the crossbar central. The sockets are each formed with one flange to engage the sheet and with an annular rib such as 18 or 23 which is stamped down into the countersink or counterbore at the other side of the sheet. In a modification the stud is formed with a polygonal extension 67 bearing a box spanner that depresses the crossbar by means of a central stud 68 headed at 69. In a further modification the head of the shank has a polygonal hole to receive a headed polygonal member fitted with cross wings for hand manipulation the polygonal member being first depressed axially to release the crossbar.
Patent GB-913954-A (GB)
Title: Improvements in the propulsion of outboard engine-driven boats or other marine craft
Inventor: DOWTY GEORGE HERBERT
IPC: B63H11/00
Filed: 1959-03-26
Abstract: 913,954. Outboard hydraulic jet propulsion apparatus. DOWTY TECHNICAL DEVELOPMENTS Ltd. March 23, 1960 [March 26. 1959], No. 10669/59. Class 114. An outboard jet propulsion apparatus, in which water is expelled as a jet at 7, has a lower plate 11 extending rearwardly from the stern of the boat which can be set at a predetermined height with respect to the boat and which accommodates the entry 9 through which water is drawn into the pump 4. The plate 11 is arranged to be continuous with the bottom of the boat and by adjustment of the brackets 14 and 15 its angle may be varied in the vertical plane. The apparatus carries a steering deflector 18 and reversing deflector 22. The apparatus may be pivotally mounted on the boat with a suitable flexible coupling to the plate or it may be permanently attached to the boat, the plate 11 forming part of the boat structure. Specification 913,953 is referred to.
Patent GB-1030423-A (GB)
Title: Electrodes for alkaline storage batteries
Inventor: ACKERMANN KARL
IPC: H01M4/28
Filed: 1963-03-19
Abstract: 1,030,423. Batteries. BADISCHE ANILIN- & SODA-FABRIK A.G. March 19, 1963 [March 23, 1962], No. 10744/63. Heading H1B. A process for producing a battery electrode includes the step of allowing a porous metal grid to be acted on by an ammonium compound under oxidizing conditions to form the active material. A grid of sintered nickel powder is impregnated with ammonium chloride and then exposed to an atmosphere of ammonia, water vapour and air or oxygen at elevated temperature to precipitate the hydroxide. Alternatively ammonium nitrate is used, and additional active material is deposited by adding nickel nitrate before, during or after the treatment with the ammonium compound. Tetra-ammine nickel nitrate is alternatively used. The activation takes place in a weakly acid to weakly alkaline medium (pH 4 to 10), acetic acid, propionic acid, citric acid, glycine, aluminium nitrate or other aluminium or zinc salts having amphoteric properties being added.
Patent GB-969373-A (GB)
Title: Improvements in brick making machines
Inventor: WHITTAKER NORMAN
IPC: B28B7/18
Filed: 1962-03-21
Abstract: 969,373. Machines for moulding perforated bricks. C. WHITTAKER & CO. Ltd. March 13, 1963 [March 21, 1962], No. 10770/62. Heading B5A. A machine for moulding perforated bricks comprises a mould box A, within which is movable a lower hollow piston B, and an upper piston C, a transverse bar D, having upwardly projecting prongs E, being arranged to move in the lower piston B upwardly and downwardly. The ends d of the bar D project through vertical slots in the piston B, and are attached to compression brackets d<SP>1</SP> which are slidable over rods F and retain compression springs G. A charge is placed in the mould box when the piston B is at the bottom of its stroke, then the piston B is moved upwardly and the piston C downwardly, the latter engaging the ends of the prongs E and moving the bar D against the action of the spring G. When the perforated brick has been formed it is moved out of the mould box A by the continued upward movement of the lower piston B.
Patent GB-987420-A (GB)
Title: Improvements in apparatus for the stretching of webs of material
IPC: B65H23/028
Filed: 1962-03-21
Abstract: A draw chain for use in apparatus for continuously stretching webs of fabric longitudinally, and preferably also transversely, comprises link rods hinged together in series to be foldable in zig-zag fashion one independently of the other like a folding rule, and which carry tentering clamps and also carry two sets of guide attachments which are adapted to bear respectively against two guide faces to limit stretching of the chain and thus limit the distances between adjacent clamps.  The link rods may extend beyond their hinge points and the extensions may carry guide pins for bearing against one of the guide faces to limit stretching of the chain.  The guide attachments may be rollers which are mounted on pins inserted in the link rods and the rollers may be mounted with intermediate roller bearings.  The rods may be equally long between their hinge points.
Patent GB-551627-A (GB)
Title: Thread severing device for sewing machines
IPC: D05B65/00
Filed: 1941-08-26
Abstract: 551,627. Sewing-machines. FAIRWEATHER, W. C. (Singer Manufacturing Co.). Aug. 26, 1941, No. 10897. [Class 112] A cutter-block 55 on the presser foot and a cutting edge 39 at the front of the feed-dog are normally kept apart by the work. When the work passes from between them, the thread chain extending from the work is engaged and cut by them. The cutter block has a step 63 which co-operates with the cutting- edge of the feed-dog. The cutter-block is mounted in a slide in a part 53 pivoted on the presser bar, being adjustable by means of an eccentric pin 57 which enters a transverse slot in the cutter block. The pivot of the part 53 is provided by a pin 51 in that part mounted in an arcuate slot struck from a centre substantially at the thread-cutting point. The pivoted sole-plate 40 of the presser-foot has a tongue 48 extending near to the cutting point. The feeddog has three feed surfaces side by side, and the cutting edge 39 is formed on a widened portion of the middle surface. One of the surfaces has a narrowed portion which does not extend so far forward as the other surfaces do. In a modification, in place of the lengthwise adjustable block 55, a block having four differently dimensioned faces 88, 89, 90, 91, Fig. 10, is pivotally secured in a pivoted part 80. Specification 541,131 is referred to.
Patent GB-116595-A (GB)
Title: Improvements in and relating to Floors.
Inventor: PHILLIP RICHARD GEORGE
IPC: C04B28/02
Filed: 1917-07-31
Abstract: 116,595. Phillip, R. G., and Poole, W. H. July 31, 1917. Concretes and mortars, cement.-A floor is formed of a bottom layer composed of 14 parts of cement, 2 parts of sawdust, 1 part of saturated solution of magnesium chloride, and 4 parts of iron pyrites residue obtained in the manufacture of sulphuric acid. The composition may be coloured with any suitable oxide, for example, that obtained by adding sodium ferrocyanide to a dilute solution of copperas acidified with sulphuric acid, and oxidizing the white precipitate with nitric acid. The above composition is faced with a composition of 14 parts of cement, 1 part of sawdust, 1 part of magnesium chloride solution, and 1 part of pyrites residue with oxide colouring. Oil may be added to the composition, or the surface may be finished with oil or with an acid-proof composition of 7 parts of paraffin and 10 parts of vaseline heated to about 104‹ F., and applied whilst warm.
Patent GB-511620-A (GB)
Title: Improvements relating to gas burners
IPC: F23D14/12
Filed: 1938-04-11
Abstract: 511,620. Gas burners. RADIATION, LTD., YATES, H. J., and BROOKS, G. W. April 11, 1938, No. 10998. [Class 75 (i)] A gas burner fitting comprises a body part a adapted at one end for attachment to a gas supply connection d, which may contain or form part of a regulator or tap, and at the other end for telescopic detachable connection with a mixing-tube r and fitted at the ends with a nipple g and a slidable choke h, formed with a rack i for adjustment by means of a pinion j, the intermediate portion of the body part being shaped as a hood to allow access of air. As shown, the part a is provided with a flange b secured by screws c to the gas connection d, a flanged nipple g being held by the latter in an aperture in the flange b.
Patent GB-1467501-A (GB)
Title: Apparatus for activity sampling
IPC: G06F15/02
Filed: 1974-03-12
Abstract: 1467501 Checking timing of human activities; random pulse generators SYSTEM FREKVENSOR AB 12 March 1974 [12 March 1973] 11011/74 Headings G4D and G4T Apparatus for collecting time related data in activity sampling (as described in Specification 1,316,691) comprises a data store such as a cassette tape recorder; a pulse generator which produces pulses at randomly varying intervals; a call signal generator responsive to the random signal to alert an operator; a character generator such as a keyboard operable by the operator in response to the call signal; and transfer means operable to convert the random pulses and the generated characters into recording signal for the data store. In Fig. 2 a counter 10 counts from zero to a first preselected value from a low speed clock 8 and then causes an electronic switch to change over for a period, e.g. 1 second to receive high speed random pulses from a noise generator 7 (Fig. 4, not shown) employing a Zener diode as noise source. The counter cycles rapidly ending the period at a random value whereupon it recommences counting from the low speed clock until it reaches a second preselected value when it triggers the call generator 6 which issues an audible or visible alarm signal. The apparatus which somewhat resembles a pocket calculator displays the random number reached by the counter and then displays the response of the operator as it is keyed in. Both are read into the cassette store by logic circuitry (Fig. 6, not shown). The tape drive is started and stopped automatically, only running for the minimum time necessary to record the data.
Patent GB-829405-A (GB)
Title: Process for the concentration of lactam oils
Inventor: MEIER GERHARD
Filed: 1956-04-12
Abstract: A process for the concentration of the aqueous lactam oil obtained in the Beckmann rearrangement of oximes of cyclic ketones after subsequent neutralization with ammonia or other alkali and prior to solvent extraction of the oil comprises passing an inert gas in a finely-divided state through the oil at an elevated temperature with stripping-off of water and ketone impurities, the lactam content of the so-treated oil not being thereby increased to more than 80% by weight.  Any ammonia present is also removed.  The treatment prevents emulsion formation in the subsequent extraction and increases the yield.  The expression "inert gas" denotes a gas which is unreactive towards the lactam under the reaction conditions and does not include any form of steam.  The gas may be nitrogen but is preferably air which oxidizes impurities in the oil, thereby further increasing its purity; this oxidation may be aided by the presence of small amounts of a metal salt oxidation catalyst, e.g. cobalt or manganese acetate. In examples: (1) an aqueous lactam oil obtained by rearrangement of o-methyl cyclohexanone oxime and subsequent neutralization with ammonia and comprising 68% lactam is treated with N2 at 100 DEG  C. until the lactam content is raised to 77% and the lactam free from ammonia and ketone is then extracted in a 5-stage extractor; (2) a similar oil obtained from cyclohexanone oxime is treated analogously with air in the presence or absence of manganese acetate at 110 DEG C.  Specification 736,196 is referred to.
Patent GB-315734-A (GB)
Title: A piston for internal combustion engines
IPC: F02F3/28
Filed: 1928-04-16
Abstract: 315,734. Kondo, R. April 16, 1928. Pistons, packing. - In a piston of the type in which the head is provided with a packing flange 2, the flange is made of aluminium alloy, and may be integral with the piston, or detachahly secured to it.
Patent GB-1401919-A (GB)
Title: Coating compositions
IPC: B29C48/08
Filed: 1973-03-08
Abstract: 1401919 Polyethylene compositions EASTMAN KODAK CO 8 March 1973 [9 March 1972] 11257/73 Heading C3P [Also in Division B5] Extrusion coating compositions comprise (1) 99À5 to 70 weight per cent of polyethylene having a melt index at 190 C. of 0À5 to 50, a density greater than 0À910 g./ml. and a melt index recovery of greater than 50%, and (2) 0À5 to 30 weight per cent of DAC-B (debutanized aromatic concentrate-B) hydrocarbon resin. The compositions may also contain pigments, e.g. titanium dioxide, stabilizers, slip agents and colorants. The hydrocarbon resin may be prepared by polymerizing DAC-B in the presence of aluminium chloride in a two stage process at 50 to 100 C. and subsequently 125 to 150 C., followed by low pressure and high pressure hydrogenations. The compositions may be used for extrusion coating papers and paperboards. Examples describe compositions of polyethylene, DAC-B resins and optionally titanium dioxide, pentaerythritol tetrakis(3,5-di-t-butyl-4- hydroxyhydrocinnamate), 2 - benzylthioimidazole, poly[4,4<SP>1</SP> - isopropylidene dicyclohexanol pentaerythritol phosphite, 2,2<SP>1</SP>- thiobis - (toctylphenol) -n - butylamine, octadecyl 3,5- di - t - butyl - 4 - hydroxyhydrocinnamate and stearated oleamide.