baber/WOPTO huggingface dataset:
Patent GB-850343-A (GB)
Title: Improvements in or relating to high voltage supply sources
Inventor: QURAISHI ABDUL HAMEED
IPC: G01N27/04
Filed: 1957-07-30
Abstract: 850,343. Transistor oscillator circuits. MARCONI INSTRUMENTS Ltd. June 9, 1958 [July 30, 1957], No. 24039/57. Class 40(6). [Also in Groups XXXV and XXXVI] A high voltage for supplying a moisture meter is obtained from a voltage multiplier arrangement connected to a D.C. transistor converter comprising a battery E, an oscillating transistor TRI and a transformer T having a feed back winding C. To start the oscillations the base of TRI is given (temporarily or continuously) a negative bias. The voltage is stabilized by transistor TR2 which is normally biased off by battery F but passes a heavy current when voltage across winding B becomes excessive, so limiting further voltage rise For moisture measurement or control the high voltage is applied to the circuit shown in Fig. 2, the test specimen being inserted at T, P and meter A<SP>1</SP> being graduated in ohms or in moisture content. For automatic control of moisture content A<SP>1</SP> is replaced by a relay, an astable flip-flop circuit or the split field of a servo-motor. The current passing through the test specimen may be amplified by a transistor (Fig. 3, not shown). According to the Provisional Specification the oscillator arrangement can be a class C, a ringing choke or a transformer coupled oscillator with grounded emitter or grounded base. Two transistors in a push-pull circuit can be used or a separate transistor oscillator can be used to feed a single-ended or push-pull output stage. Transistor TR2 can be replaced by a diode and voltage stabilization can also be provided using a diode and a condenser in a saw-tooth oscillator circuit across one or more voltage multiplication stages.
Patent GB-674402-A (GB)
Title: Improvements in devices for emptying dustbins
IPC: B65F1/10
Filed: 1950-10-02
Abstract: 674,402. Dustbin emptying devices. LINDE, H. Oct. 2, 1950, No. 24071/50. Class 26. A device for the dust-free emptying of dustbins into a refuse collecting container comprises a substantially vertical emptying plate 2, having an opening corresponding to the mouth of the dustbin and which is pivoted at 3, and a cover plate 5 hinged to the emptying plate at 4 which is loaded by a spring or like biassing device towards the emptying plate. An upper extension 6 of the cover plate is hinged at 7 to rocking arms 8 which are mounted on shafts 9. Each shaft carries, outside the side wall 1, a lever 10, connected by a spring 11 to a fixed bracket 12. The members 10, 11, 12 are enclosed by a cover 13.
Patent GB-466322-A (GB)
Title: Improvements in and relating to the moulding of articles from thermoplastic materials
IPC: B29C51/10
Filed: 1936-09-04
Abstract: 466,322. Moulding articles of acetylcellulose &c. HEILBERG, A. Sept. 4, 1936, No. 24203. [A Specification was laid open to inspection under Sect. 91 of the Acts, March 5, 1937.] [Class 87 (ii)] Articles such as lamp shades are moulded from a sheet of acetyl cellulose or other thermoplastic material by clamping the sheet in a holding device in such a manner that, when immersed in a heated water bath, an air space is enclosed under the sheet the volume of which expands and forces the sheet upwards, the sheet being then pressed against a mould, situated below it, to take the shape of the mould. A cross-member E carrying two columns h rests in a water container provided with heating means. A thermoplastic sheet a is clamped between two rings b, i which are attached to tubes d sliding on the columns h. When the sheet is immersed in the water a layer of air is enclosed within the ring i which layer expands and forces the sheet upwards into a hemispherical shape. The cross member E is raised by lifting the columns h so as to press the mould g against the sheet a causing it to take the shape of the mould. The sheet is then cooled outside the bath.
Patent GB-1475439-A (GB)
Title: Ball joints
IPC: F16C11/06
Filed: 1975-06-06
Abstract: 1475439 Ball and socket joints GULF & WESTERN MFG CO (MICHIGAN) 6 June 1975 24348/75 Heading E2F In a ball and socket joint a plastics bearing retainer 18 is housed within a housing member 14 of the ball and socket joint, the retainer having an annular wall with an inner generally spherical peripheral surface 46 surrounding the ball 16 formed on the end of a stud 12, the annular wall of the retainer being provided with a circumferentially extending groove 50 and a plurality of circumferentially spaced resilient webs 52 in the groove. The webs 52 terminate in a series of resilient tabs 54 which, in a free state, extend beyond the outer edge of the retainer 18, but in the assembled position illustrated in Figure 1, are deformed. The retainer 18 is formed of a pair of interlocking rings 30, 32.
Patent GB-518274-A (GB)
Title: Improvements in or relating to electro-magnetically controlled hydraulic reciprocating mechanism
IPC: B23Q5/26
Filed: 1938-08-18
Abstract: 518,274. Sawing. WADKIN, Ltd., GODDARD, J.,H., and SIMS, W. L. Aug. 18; 1938, No. 24351. [Class 145 (i)] [Also in Group XXIX] An electromagnetically-controlled hydraulic reciprocating mechanism of the type comprising a pump 20, Fig. 2, supplying fluid under pressure to pipes 18, 19 leading to opposite ends of a cylinder 15 in which works a ram 16 arranged to operate limit switches to control electromagnetic means operating valves controlling the supply of fluid to the cylinder is so constructed that on operation of the limit switches 34a, 34b one electromagnet is de-energized and movement of a rocking armature permits reversing of one piston valve 26 and the armature operates a switch in the circuit of a second magnet and the energization of this operates the second valve 27 so that the movement of the ram 16 is reversed. The invention is shown as applied to a sawing- machine in which an electrically driven saw 12, Fig. 1, is carried by a slide 13 operated by the ram 16. At the end of the forward stroke of the slide 13 an adjustable stop 41 on the slide operates a limit switch 34a which de-energizes coil 32b and so effects an operation of the valves 26, 27. At the end of the rearward movement of the slide 13, a stop 42 actuates the limit switch 34b but reversal may be delayed by a time switch 37 which, can be set to delay the forward movement so as to give time for the operator to make adjustments. A hand or foot operated main switch 36 is arranged in the circuit of the forwarding control devices, and as shown in Fig. 4 the circuits of the two controlling magnets are in parallel. A choke valve 38, Fig. 2, may control the pressure of the supply fluid, and in the pipe 39 leading back from the pressure side of the pump to the reservoir 21 a loaded relief valve 40 may be arranged: Two valves may be operated by one electromagnet only, and the operation of the stops 41, 42 on the switches 34a, 34b may cause a circuit to be closed instead of opened and an electromagnet to be energized, instead of de-energized.
Patent GB-498124-A (GB)
Title: Improvements in typewriting machines
IPC: B41J35/22
Filed: 1937-06-29
Abstract: 498,124. Ink - ribbon mechanism. ROYAL TYPEWRITER CO., Inc. June 29, 1937, No. 24385/38. Convention date, July 23, 1936. Divided out of 498,039. Drawings to Specification. [Class 100 (iv)] A carbon-strip spool is mounted on a shaft secured to the carriage of a typewriter, a pawl for preventing unwinding of the spool is mounted on another shaft, and a two-armed latch for retaining the spool is mounted on the carriage and engages the shafts. A series of spools having the above-described latch-device may be provided. The description in the Specification is identical with part of that in Specification 498,039, but the claims are restricted to the subject-matter set out above. Specification 498,039 is referred to.
Patent GB-865622-A (GB)
Title: Improvements in vacuum wells
IPC: F04F1/02
Filed: 1957-08-01
Abstract: 865,622. Raising liquids. DEGEN, W. Aug. 1, 1957, No. 24416/57. Class 102(2). The ground surrounding a well pipe 8 is subjected to vacuum maintained in the pipe. A reservoir 10 is alternately subjected to vacuum and pressure under the control of electrodes 15, 16 to raise the liquid to the surface.
Patent GB-1060062-A (GB)
Title: Improvements in temperature sensing devices
IPC: G01K7/02
Filed: 1963-06-19
Abstract: 1,060,062. Two-part couplings. HONEYWELL Inc. June 19, 1963 [June 19, 1962], No. 24422/63. Heading H2E. [Also in Division H1] An electrical coupling for connecting a thermocouple to a recorder consists of a first portion including a fibreboard or cardboard tube 32, stapled to a sleeve 33 which supports the thermocouple, and a second portion including a metallic tube 23<SP>1</SP> enclosing a male plug 27. The female connector has ribbon leads wrapped around 90-degree sectors of tube 32 at longitudinally spaced regions, the leads passing between tube 32 and sleeve 33 and directly to thermocouple 49. The male connector consists of a moulded epoxy resin base member 24 in which are moulded terminals 25, 26 and plug member 27. Member 27 has separate conducting portions 28, 29 separated by insulation 30. The two parts of the coupling are held together frictionally, tube 32 being deformable. Reference has been directed by the Comptroller to Specifications 883,629; 883,630; 883,631; 921,026 and 921,027.
Patent GB-481361-A (GB)
Title: Improvements in or relating to fastening devices for aeroplane cowlings and like covers
IPC: F16B5/10
Filed: 1936-09-07
Abstract: 481,361. Cowling &c. fastenings. BINKS, C. L., and AMAL, Ltd. Sept. 7, 1936, Nos. 24428/36, 12299/37, and 24055/37. [Class 44] A fastening device for detachably securing a cowling 1 to an aircraft fuselage 14 comprises a longitudinally 'slotted tubular member 2 rotatably carried by the cowling, and shown as having a countersunk head seating in a washer 11, a cross-member 9 being slidable in the slots and urged towards the inner face of the cowling by a spring 10 housed in member 2. The member 9 is adapted to pass through an elongated slot 16, members 2, 9 then being rotated through a right-angle by screw-driver or like tool to dispose member 9 transversely across slot 16, member 9 being retained against accidental release movement by projections 17. As shown slot 16 and projections 17 are provided on a fitting 13 secured to the fuselage 14. Member 9 has a recess 12 engaged by the end of spring 10 to prevent lateral withdrawal from the slots in member 2. In a modification the cross member comprises a central boss slidable in the bore of member 2 and having radial arms projecting through the slots. A stud, screwed into the boss and riveted, serves to fill the outer end of the box, the outer end of the stud being flush when the fastener is in securing position but projecting slightly in the release position. The slot 16 may be open-ended, Fig. 9, to allow lateral disengagement of the cowling &c., and the fastening device may be mounted on a hinged member biassed by spring to move away from cowling and fuselage when released.
Patent GB-654548-A (GB)
Title: Improvements in and relating to circular-saw benches
IPC: B27B5/24
Filed: 1948-09-17
Abstract: 654,548. Circular saw mounting; grinding. EGERTON TOOL & INSTRUMENT CO., Ltd., and BROWNE, C. E. Sept. 17, 1948, No. 24468. [Classes 60 and 145(ii)] A circular saw bench having a table 6 through a slot in which the saw 19 projects is characterized by the saw spindle 18 and the driving shaft being parallel and interconnected by a belt and pulley mechanism 21, 31, 33, each being carried by a pivoted framework 10. 27 arranged to be moved in parallelism with one another. The frameworks are interconnected by tie-rods 34, 35 and are clamped in arcuate slots 14, 24 by locking nuts 15, 25. A spring 37 secured at one end to the main frame and at the other end to the cross-bar 23 tends to counteract the weight of the motor. The table top may be pivoted and a sanding disc or plate may be attached to the end of the saw spindle which projects through the side casing.
Patent GB-1151234-A (GB)
Title: Method and apparatus for Expanding Tubular Articles
Inventor: FUCHS FRANCIS JOSEPH
IPC: B21D26/033
Filed: 1966-06-02
Abstract: 1,151,234. Stamping. WESTERN ELECTRIC CO. Inc. 2 June, 1966 [3 June, 1965], No. 24538/66. Heading B3Q. A method of forming a tubular article, Fig. 2 (not shown), comprises applying opposed fluid pressure to the inside and outside of a tube 10 to increase its ductility, and establishing a difference between the opposed fluid pressures to expand the tube, whilst compressing the tube longitudinally to reduce variations in its wall-thickness. A tube of copper, brass, aluminium, molybdenum or steel is supported on a perforated mandrel 46 in a telescopic die 41, 51, the inner part of which is carried by a cylinder 31 resting on a press-table 21. Fluid is poured into the part 51 and die-sections 56, 61 inserted, the part 51 being closed by a plug forced into position to a variable extent by screws 74 in an end-cap 73. A pressure regulator (28), Fig. 3 (not shown), and a valve (29) are now operated to lower a plunger 19 against the cap 73 and carry a cam (24) on the plunger against a pressure controller (26). A further valve (27) directs hydraulic pressure beneath a ram (20) bearing on a piston 37 in cylinder 31. Pressure within the tube 10 and in a chamber 72 surrounding it increases and the tube expands until the part 51 expands away from the plug 71, allowing fluid to escape from the chamber 72, past die-section 61 and into radial passages in the cap 73. This allows the article to complete its expansion against the die-walls, Fig. 5 (not shown).
Patent GB-163627-A (GB)
Title: Improvements in sewing machines
IPC: D05B51/00
Filed: 1920-08-24
Abstract: 163,627. Willcox & Gibbs Sewing Machine Co., Ltd., (Willcox & Gibbs Sewing Machine Co.). Aug. 24, 1920. Multiple-needle machines; thread-end holders. -Thread-end holders are carried by a continuously rotating part of the machine, but are operative only on reversal of the machine. As applied to the rotary take-ups described in Specifications 6036/12 and 6037/12, the thread-end holders are forks with flared ends 40, 41, 42, 43 secured on the cam part 35 of the take-up. In the normal rotation in a clockwise direction, the forks pass rearwardly between the threads, but when the machine is reversal by hand the flared ends gather the threads 17 in pairs and cause them to be carried into the narrow grooves between the arms of the forks where they are held, as shown in Fig. 2. The machine is given half a revolution in the reverse direction, and this is sufficient to pull-off enough thread for the commencement of the next seam. When the machine is re-started in the forward direction, the forks release the threads. The cam-part 35 of the takeup is adjustable by means of screws 37, 38. Fig. 2.
Patent GB-503607-A (GB)
Title: Improvements in the hardening of fats and oils
IPC: C11C3/00
Filed: 1937-09-09
Abstract: 503,607. Hardening oils and fats. IRMEN, P. Sept. 9, 1937, No. 24590. Convention date, Sept. 14, 1936. [Class 91] Oils and fats are hardened and stabilized with accompanying purification and deodorization by heating to 76-110‹C. in presence of water, one or more salts of phosphoric acid, higher alcohols, and esters of high molecular fatty acids with high molecular monohydric or polyhydric alcohols. Oils treated include olive, rapeseed, soya, fatty mustard, ground nut, castor, sweet almond, cottonseed, and coconut oils, and mixtures thereof. Phosphates suitable are tri-sodium or tri-potassium orthophosphate or pyro-phosphate, or mixtures thereof. Higher alcohols are aliphatic alcohols containing at least 16 C atoms, e.g. cetyl, octadecyl, arachyl, carnaubyl, ceryl, montanyl, and melissyl. The esters are of fatty acids containing at least 16 C atoms, e.g. palmitic, carnaubic, cerotic, montanic and melissic acids, with fatty alcohols, preferably monohydric containing at least 16 C atoms. Waxes, e.g. beeswax, carnauba wax,' Ghedda wax, Chinese insect wax, or artificial waxes derived from the oxidation of paraffin, are preferably used for both the mono and/or polyhydric alcohols and esters. In an example, a solution of 70 gm: of beeswax in 1000 gm. of olive oil at 95-100‹ C.. is stirred into a boiling solution of 30 gm. of a 1 : 1 mixture of trisodium and tri-potassium orthophosphate in 2000 gm. of water; on cooling, the oil solidifies as an upper layer, which is washed with warm water after the lower emulsion layer has been run off.
Patent GB-420766-A (GB)
Title: Improvements in electrically operated thermal relays
IPC: H01H61/02
Filed: 1933-09-05
Abstract: 420,766. Thermal switches. GENERAL RAILWAY SIGNAL CO., Rochester, New York, U.S.A.-(Assignees of Field, O. S.; 473, Seneca Parkway, Rochester, New York, U.S.A.) Sept. 5, 1933, No. 24623. Convention date, Sept. 20, 1932. [Class 38 (v)] A thermal relay comprising an evacuated or gasfilled container has disposed therein an electric contact system in which a moving contact located between two relatively stationary contacts is carried into alternative engagement therewith by the action of a bimetallic member, which bimetallic member is heated in accordance with the operating current of the relay, there being also located in the container, but substantially shielded from the heat generated by the operating current o fthe relay, another bimetallic member or bimetallic members acting when heated to vary the respective distances between the moving contact and the relatively stationary contacts inversely as the first - mentioned bimetallic strips varies these distances, so compensating the relay for variations in ambient temperature. As shown in Figs. 2 and 3, the elements of the thermal relay are placed within a glass envelope 1 which is evacuated or filled with inert gas, the container 1 being fitted to an insulating base with contact pins in a manner similar to that employed in thermionic valve construction, the contact pins serving to conduct current to the different parts of the relay. Three bimetallic elements are provided, a central one 7 and two outer ones 17, 20, the central element carrying a contact 8 normally engaging a contact 18 on the right-hand element 17. A coiled heating filament 13 is provided adjacent to the central bimetallic strip which on heating is deflected so that its contact 8 is drawn away from the contact 18 and engages a contact 21 on the left-hand strip 20. The heating effect of the filament is shielded from the outer relatively fixed bimetallic strips by curved metal plates 10, 12 which also serve to support and conduct current to the heating filament 13. By reason of the mounting of the contacts 18, 21 on the bimetallic strips 17, 20, the relay is compensated in its action for changes in ambient temperature. In a modified arrangement (Fig. 4, not shown) current is led directly through a U-shaped strip which is directly connected by an insulating plate to a compensating strip and a centrallydisposed contact plate, the latter acting as a shield between the two bimetallic strips.
Patent GB-1203991-A (GB)
Title: Improvements in or relating to the bending of sheet metal
Inventor: PARKER RAYMOND BARRY
IPC: B21D37/10
Filed: 1967-05-26
Abstract: 1,203,991. Angular bending; corrugating. PRECISION PRESSWORK CO. Ltd. 9 Aug., 1968 [26 May, 1967], No. 24632/67. Heading B3E. A method of bending or corrugating a sheetmetal blank comprises forcing the blank with a punch against two spaced-apart portions provided by two separate blocks of resilient material, e.g. polyurethane, to bend the metal at predetermined positions while leaving the metal unsupported by resilient material between said positions at least during the initial part of the bending or corrugating. A press tool for carrying out the method comprises two separate rods 15 of, e.g., polyurethane, mounted in adjustable holders 14 slidable in a bolster 10. A punch 12 provided with a head 13 is mounted for vertical reciprocation. The blank 24 is centrally supported on a spring-loaded plate 22 which is depressed as the punch descends and presses the blank into the resilient rods to form the flanges 25, 27. In a modification the rods are of square cross-section with the side facing the punch inclined to the vertical axis. For forming corrugations in a blank 47 (Fig. 4) spaced rods of polyurethane are provided in the punch and in the lower die. The initially flat blank is supported on anvils 51 and the base of the corrugation is engaged by a pressure-pad 50. In another modification the resilient rods are provided with longitudinal V-grooves (Fig. 6) of different sizes the rods being rotatable to present the required groove towards the punch. Clearance volumes are arranged between the resilient rods and their holders to allow for expansion. For forming a V-bend in a metal sheet a punch 64 (Fig. 5) co-operates with two cylindrical polyurethane blocks 61 located in a bed 62.
Patent GB-405370-A (GB)
Title: Improvements in and relating to erasing devices
IPC: B43L19/00
Filed: 1932-09-05
Abstract: 405,370. Erasers. MACCULLOCH, J. M., 534, Sauchiehall Street, Glasgow. Sept. 5, 1932, Nos. 24681/32 and 11837/33. [Class 146 (iii).] An eraser is provided with a yoke or clip by which it can be secured frictionally to a holder mounted on a typewriter. In one form, a disc eraser 1, Fig. 1, is secured, by means of a rivet 3, between two metal or vulcanite links 2 connected by a rivet 5 and distance piece to form a yoke such that the tongue 6 of a holder, Fig. 3, may enter between the eraser and the sides of the yoke and removably support the eraser. The holder is secured to a part of a typewriter, such as the paper tray or the hinged scale bar, by means of a clamp 7, a spring clip, or by screws. In a modification, the eraser 1 is provided with a hollow stud 14, Fig. 8, one end of which is enlarged to form a flange 15 between which and the eraser sufficient clearance is allowed to receive a tongue consisting of tapered prongs ; alternatively, a separate disc or a double flange may be provided in place of the flange 15. Specification 946/07, [Class 146, Writing-instruments &c.], is referred to.
Patent GB-189580-A (GB)
Title: Improvements in cinder sifters
IPC: F24B15/00
Filed: 1921-09-17
Abstract: 189,580. Milne, M. L. Sept. 17, 1921. No Patent granted (Sealing fee not paid). Rotary sieves.-A cinder-sifter consists of a bin 1 formed with slots 3 at the upper edge, and a rotatable cylindrical sieve 5 having solid ends 4 supporting an axle 7 which rests in the slots 3 so that the riddle projects partly out of the bin, a hinged door 6 for the sieve and a hinged or detachable lid 9 for the bin being provided. The rim 10 of the lid 9 is slotted at 11 to fit over the axle 7 so as to provide a tight joint. Rotation is effected by a handle 8 on the axle 7 which may be horizontal or inclined. The Provisional Specification also states that in the case of an inclined axle, charging and discharging shoots may be provided, and the ends of the sieve may be open. Further the bin may be provided on the inside with guides for the ends of the axle 7 instead of being slotted. Reference has been directed by the Comptroller to Specifications 2538/90 and 2315/06.
Patent GB-650598-A (GB)
Title: Drawing appliance for drawing board use
IPC: B43L13/06
Filed: 1948-09-22
Abstract: 650,598. Draughting-machines. HORNIG, V. Sept. 22, 1948, No. 24739. [Class 97 (iii)] A drawing appliance comprises a clamp 7 attachable at a selected position to an edge of a drawing board, a parallelogram linkage consisting of two pairs of links of which one pair 1 is pivoted at one end to the clamp 7 and at the other end to a jointing member 5 and of which the other pair 2 is pivoted at one end to the member 5 and at the other end to a pointed instrument holder 9 and a graduated setsquare 15 turnably mounted on the holder 9 so that it can be adjusted relatively to the point of the holder, means being provided for fixing the set-square 15 to the holder 9 in its adjusted position. The clamp 7 may consist of an angle bracket screwed to an outer edge of the board or may be of channel section and provided with a clamping screw. As shown, the set-square is fixed in position by the clamping action of a nut 16 on a screw-threaded shank secured to the set-square and passing through the holder 9.