baber/WOPTO huggingface dataset:
Patent GB-665378-A (GB)
Title: An improved pick-box for coal cutter chains
IPC: E21C35/193
Filed: 1949-03-08
Abstract: 665,378. Mining-machines. HOPKINSON, & CO., Ltd., A. and SIDEBOTTOM, T. March 31, 1950. [March 8, 1949] No. 6247/49. Class 68 (i). In the centre portion of a pick box for coal cutter chains is a tapered socket 1 that is either vertical or forwardly inclined relative to the line joining the connecting pivot pin axes of the box and in the socket is positioned one or more picks P, the shank or shanks of which have a taper corresponding to that of the socket and the lateral position of the pick or picks relative to the box can be varied by menas of distance pieces 4. In one form of box the distance pieces are separate and movable within the socket, whilst in another form the distance pieces are integral with the centre portion to subdivide the socket so as to provide a separate socket for each pick. Screw holes in the outer face of the centre portion penetrate into the socket at an angle thereto so that a set screw 2 can engage the pick in each lateral position to lock it in the socket. When the socket is forwardly inclined with respect to the line joining the pivot pin axes, the set screws are at right angles to said lines. A hole 3 is formed through the side of the box so that it intersects the inner ends of the pick shanks so enabling a drift to free the picks from the sockets. The box may have bossed side ribs or a central rib.
Patent GB-229868-A (GB)
Title: Improvements in or relating to vacuum producing devices for player pianos
IPC: G10F1/02
Filed: 1924-03-12
Abstract: 229,868. Hanson, C. H. March 12, 1924. Casings; noise, reducing; pumping-machines and fan apparatus.-A vacuum producing device for player pianos comprises a motor driven centrifugal fan enclosed within a housing and with sound insulating material such as cork sawdust or rubber disposed between the fan and the housing through which material the air is discharged. The housing of wood is formed in sections 20, 21 each having sound insulating material 25 disposed therein which supports inner muffler members 30, 35. The fan unit is secured to the upper muffler member 30 which is formed with an inlet opening 52 flexibly connected by a tube 53 with an inlet 50 in the exterior of the housing section 20. Blocks 36 of sound . insulating material support the fan unit on the lower muffler member 35 which has an opening 38 covered by a removable straining screen 40 through which the air passes to the insulating material and out by openings 70. Fabric packing 62 is used to prevent contact between metallic parts and the housing. Spring pressed flapvalves 45 may be fitted on the discharge side of the fan casing 15.
Patent GB-537356-A (GB)
Title: Improvements relating to contacts for electric circuit breakers
IPC: H01H1/42
Filed: 1940-04-10
Abstract: 537,356. Arc-rupturing in switches; contacts. ELLISON, Ltd., G., and PRUDHOE, W. W. April 10, 1940, No. 6444. [Class 38 (v)] When the contacts j, a first engage arcing-tips m, press apart arcing-tips e, further movement causing the main contact-part k to press apart the main contact-parts d and by further rotation of the latter about pivots c, separate the arcing tips. In opening the circuit, the reverse process takes place under the action of the spring f. Either contact-assembly may be the movable one.
Patent GB-896740-A (GB)
Title: Improvements in or relating to selective ion-exchange membranes
IPC: C08J5/22
Filed: 1958-06-03
Abstract: Selective ion-exchange membranes are obtained by introducing ionic groups with a dissociation constant of at least 10-5 in an amount of at least 0,15 milliequivalents per gram of membrane to a solid polyalkylene polymer base material obtained as described in Specification 896,739.  The membranes which may be in the form of sheets or tubes may be used in electrodialysis processes for the treatment of fluids, and the removal of mineral components from aqueous solutions.  Specification 778,001 also is referred to.
Patent GB-917751-A (GB)
Title: Improvements in fork lift trucks
IPC: B62B3/065
Filed: 1960-02-24
Abstract: 917,751. Pallet trucks. STEINBOCK G.m.b.H. Feb. 24, 1960 [April 22, 1959 (2); April 25, 1959], No. 6538/60. Class 78 (3). A pallet truck comprises a unit 10 having steerable wheels 14 and an hydraulic ram 26 which is connected to an arm 36 by a universal joint 30, and a pair of tines 44 which are interconnected solely by shafts 48, 50 passing through arm 36 and which are supported at their free ends by wheels 88 adapted to be raised and lowered through linkages 58, 68, 74 and 80 simultaneously with movement of arm 36 by ram 26. In a modification (Fig. 5), the shaft 50 is universally jointed to the tines at 90 and is supported in the arm 36 by a resilient bush 94. In a further modification (Figs. 6 and 7, not shown), the ram is provided with a pair of telescoping pistons.
Patent GB-991186-A (GB)
Title: Improvements in or relating to magnetic cores
IPC: H01F30/10
Filed: 1962-02-20
Abstract: 991,186. Transformers; electromagnets. F. KNOBEL. Feb. 20, 1962 [Feb. 21, 1961], No. 6587/62. Headings H1P and H1T. A magnetic core, which is magnetized by a longitudinal winding 4, consists of an inner rodshaped part 1 and an outer tubular part 2, the latter being formed by coiling a strip of ferromagnetic material. The coil 2 may be formed continuously or in a plurality of portions and its cross-section may be circular, oval or square with rounded corners. The inner core part may be formed of a stack of longitudinal laminations 1 (Fig. 4) the thickness of the stack being double the width of the strip used for the outer part and the width of the individual laminations being such that a substantially uniform air gap 8 is left between the edges of the laminations and the inside of the outer core part. The inner core part may alternatively consist of a stack of transversely extending laminations. A fine adjustment can be made to the electrical characteristics of the coil by inserting ferromagnetic wires 7 in the cavities 6 in the core. Insulation 5 is provided between the inner core part and the winding and plastic members 3 are used to hold the laminations of the inner core together.
Patent GB-660483-A (GB)
Title: Improvements in machines for separating water from sand and like material
Inventor: GUISE CHARLES
IPC: B01D33/27
Filed: 1949-03-11
Abstract: 660,483. Gravity-separation apparatus. HARDY & PADMORE, Ltd. March 13, 1950 [March 11, 1949], No. 6661/49. Class 46 In a machine comprising a tank and bucket wheel for separating water from sand and like material of the type described in Specification 478,612 a feed compartment open at top and bottom is disposed substantially in the centre of the tank, is fed by a chute or the like with the sand-and-dirtladen water, and operates in conjunction with a surrounding weir. The mixture to be separated passes down a chute d, Fig. 1, into a compartment c, the open bottom of which is spaced well above the bottom of a flared settling-tank a. One side of the compartment c is constituted by part of a sidewall a<SP>1</SP>, Fig. 2, of the tank a. The water with suspended dirt overflows weir plates a<SP>6</SP>, Fig. 4, which are secured to the ends and parts of the sides of the tank a by slots a<SP>7</SP> and screws a<SP>8</SP> so as to be adjustable to a truly horizontal position, as shown in Fig. 1. The water is collected in an effluent channel a<SP>9</SP> having a sloping bottom in contact with the tank walls, and is discharged at a<SP>5</SP>. The middle portion of the side-walls a' are stepped up to a height equal to that of channel walls a<SP>4</SP> surrounding the tank ends, (see Fig. 1), and the middle part of the channel a<SP>9</SP> on each side of the tank is offset and reduced in height to avoid the supporting members; (see Fig. 2). Each bucket b<SP>1</SP> Fig. 5, has a perforated rear wall and bottom and is secured to a plate b<SP>3</SP> which in turn is secured to the horizontal part of one of the arms b of the bucket frame. An additional grid device b<SP>5</SP>, secured to the vertical wall assists in the separating step and in the deposition of sand into a shoot e. The plate b<SP>3</SP> serves to deflect water back into the tank away from any particular bucket beneath the one in question. The angle of discharge of the bucket may be varied by incorporating suitable spacing pieces between the bucket b<SP>1</SP> and plate b<SP>3</SP>.
Patent GB-1515591-A (GB)
Title: Process for vegetable tissues and derivatives thereof
IPC: A23J1/14
Filed: 1976-02-19
Abstract: 1515591 Extracting phenols and oligosaccharides from vegetable matter SNAMPROGETTI SpA 19 Feb 1976 [21 Feb 1975 14 Jan 1976] 06676/76 Heading A2Q Phenols and oligosaccharides are removed from vegetable tissue or a protein - containing product of such tissue, for example sunflower seed flour, cottonseed flour or soybean flower by extraction with (a) an alcohol, ketone or ester and (b) an aqueous solution of an electrolyte what is an acid or an acid salt. The alcohol (a) may be n-butyl alcohol and the electrolyte (b) may be HCI.
Patent GB-1373263-A (GB)
Title: Switch actuating mechanisms
IPC: H01H13/14
Filed: 1973-01-24
Abstract: 1373263 Switch handles BURGESS MICRO SWITCH CO Ltd 24 Jan 1973 [14 Feb 1972] 6804/72 Heading H1N An actuator lever 29, Fig. 3, pivotally mounted at 20 on a casing 8 for operating one or two microswitches 12 attached to one or both sides of the casing has an abutment portion 32 engageable with the or each switch button 16 and may be resiliently urged in one or both directions of movement. A coil spring (34), Fig. 1 (not shown) may be engaged on a hook portion 28 on the lever 29 and held at its opposite end within the casing. Alternatively, the lever 29 may be urged in both directions on opposite sides of a dead-centre position by a C-spring (40), Fig. 2 (not shown) located in compression between projections (36) (46) on the lever and casing respectively.
Patent GB-627338-A (GB)
Title: Improvements in or relating to insecticidal compositions
IPC: A01N59/10
Filed: 1947-03-11
Abstract: The uniform distribution of cryolite in dust form, as an insecticide is improved by intimately mixing it with between 0.2 and 5 per cent by weight of a finely-divided metallic resinate, preferably sodium, calcium or zinc.  The composition is in such a state of sub-division that at least 90 per cent of it is in the range of about 1-10 microns particle size.  Specification 571,596 is referred to.ALSO:The uniform distribution of cryolite in dust form as an insecticide is improved by intimately mixing it with between 0.2 and 5 per cent by weight of a finely divided metallic resinate, preferably sodium, calcium or zinc.  The composition is in such a state of subdivision that at least 90 per cent of it is in the range of about 1-10 microns particle size.  Specification 571,596, [Group III], is referred to.
Patent GB-491937-A (GB)
Title: Method and device for reducing and multiplying acoustic frequencies
IPC: G11B5/00
Filed: 1937-03-10
Abstract: 491,937. Band - width reduction. GABRILOVITCH, L. March 10, 1937, No. 7023. Convention date, March 10, 1936. [Class 40 (iv)] A system in which the frequencies of a speech band are reduced to submultiple frequencies at the sending end and are restored at the receiving end makes use of recording and reproducing apparatus in which the recording and reproducing operations take place at different speeds. The frequency reducer comprises a magnetic or other ribbon record MN co-operating with pick-up magnets or other elements a ... d carried by a disc D, which moves in the same direction as the record but at a smaller speed. The record may be regarded as made up of elements of length equal to the pick-up area AB, only a fraction of each element being effective, and the component frequencies are each reduced by that fraction. In order to avoid the loss or distortion of sounds of different character, two or more pieces of apparatus may be employed having different values for the length AB and different numbers of pick-up elements, the speeds of the record and disc being the same. Instead of a ribbon record, a disc record may be employed in co-operation with pick-up elements carried by a disc or by a flexible band.
Patent GB-678673-A (GB)
Title: Refrigerator
IPC: F25D23/06
Filed: 1951-03-27
Abstract: 678,673. Refrigerators. MOTOR PRODUCTS CORPORATION. March 27, 1951 [July 10, 1950], No. 7085/51. Class 29 The inner and outer spaced casings A, B of a refrigerator are permanently sealed to prevent communication between the inter-space P and the atmosphere by an annular flexible gas-impervious member G extending between the casings and cemented by plastic sealing means to ledges C<SP>3</SP>, F on the casings. The evaporator tubes K are secured to the outer surface of the inner casing B by hook strips K', and the condenser tubes L are secured to the inner surface of the outer casing A by vertical channel members M with flanges M' spot welded to the casing and having notches M<SP>2</SP> for the tubes. A channel member C with inwardly projecting flanges C<SP>2</SP>, C<SP>3</SP> is welded to the top of the outer casing A, and Z-shaped brackets D depending from the flange C<SP>3</SP> support wooden strips E upon which rest angle bars F secured to the inner casing B. The sealing member G formed of paper impregnated with thermoplastic material such as asphalt has a flange G' overlapping the brackets D and flange C<SP>3</SP> and an inner flange G<SP>5</SP> resting upon the angle bar F the flanges being sealed by hot asphalt. To ensure maintenance of the seal short round wooden bars H are wedged between the flanges C<SP>2</SP>, C<SP>3</SP> before the asphalt has set. The usual breaker strip I of moulded plastic material extends from flange C<SP>2</SP> to overlap the inner casing B. The vertical channel members M at one side carry reinforcing members supporting the hinge of the lid.
Patent GB-1029575-A (GB)
Title: Improvements in or relating to rotary piston internal combustion engines having a composite rotor
IPC: F02B53/00
Filed: 1963-02-21
Abstract: 1,029,575. Rotary-piston internal combustion engines. CURTISS-WRIGHT CORPORATION. Feb. 21, 1963 [March 26, 1962], No. 7088/63. Heading F1F. A rotor or piston of composite construction for use in a rotary piston I.C. engine, e.g., of the n and n+1 lobe type, comprises a splined annular inner part 52 of a material having a low thermal coefficient of expansion, e.g. steel and a splined outer part 50 of a material having a high thermal coefficient of expansion and light in weight, e.g., aluminium or magnesium alloy. As shown, alternate splines on the inner part 52 which acts as a bearing sleeve are larger to facilitate attachment of a gear by means of screws 68. Alternatively the gear may be splined to part 50 (see Fig. 6, not shown). During manufacture of the rotor the part 50 may be cast on to the inner part 52 to ensure a good fit between the splines. Alternatively, the inner part 52 is made to size but with a cutting edge at one end of the splines and the part 50 is made with oversize splines; the splines of inner part 52 being forced between the splines of part 50 to trim the side surfaces thereof to obtain a close fit.
Patent GB-364420-A (GB)
Title: Thermally-operated electric switch
IPC: H01H37/66
Filed: 1931-03-07
Abstract: 364,420. Thermal switches. HADDAN, R., 31, Bedford Street, Strand, London.- (Moffats, Ltd. ; Dennison Avenue, Weston, Ontario, Canada.) March 7, 1931, No. 7185. [Class 38 (v).] A thermal switch for controlling temperature comprises a bimetallic coil 18 which rotates a spindle 12 till a projection 20 on the spindle engages a lug 19 on an armature 11 pivoted on the spindle, whereupon the armature is rotated away from a horseshoe permanent magnet 2 and a contact 10 carried by the armature is moved out of engagement with a fixed contact 9. The amount of lost motion between the spindle and the armature may be regulated by rotating a tube 17, to which one end of the coil 18 is fixed, in its clamp 21.
Patent GB-839922-A (GB)
Title: Improvements relating to window or screen wiper arrangements in vehicles
IPC: B60S1/34
Filed: 1958-03-06
Abstract: 839,922. Windscreen wipers. DAIMLERBENZ A. G. March 6, 1958 [March 7, 1957], No. 7293/58. Class 138(1). A windscreen wiper arrangement on a vehicle whose windscreen is substantially cylindrical or conical about a vertical or substantially vertical axis has the wiper blade carried and driven'by a radially extending part movable around a vertical or substantially vertical axis. This radial part may be a circular and revolvably mounted roof 5, Fig. 1a, carrying a blade 6, or an arm, such as 40, Fig. 4a. The arm may carry an additional wiper such as 26 for cleaning a transparent roof portion, Fig. 3a, and may be hinged as at 23, Fig. 3a and 75, Fig. 6a, to allow the wiper to be swung up away from the screen. The axis of rotation of the arm need not coincide with that of the conical &c. windscreen (see Fig. 3a, axes 21, 19 respectively). Two or more wipers may be mounted for rotation about a common axis, Figs. 5a, 5b, or about their respective axes, Fig. 6b (not shown) ; their radial arms may be a fixed angle apart, Fig. 5b, or may contain a particular angle only when wiping, being together or spread far apart when at rest, Fig. 5a, and Fig. 5c (not shown). A main wiper arm 45 may also have subsidiary arms 46a, 46b rotating about their respective axes, Fig. 5a. right hand side.
Patent GB-538783-A (GB)
Title: An improved mechanical torque-conversion mechanism
IPC: F16H33/08
Filed: 1940-04-24
Abstract: 538,783. Variable-speed gearing. ISHERWOOD, N. April 24, 1940, No. 7342. [Class 80 (ii)] In torque conversion mechanism of the type in which driving and driven members 7, 8 are interconnected by a swashplate and one or more masses which oscillate (or reciprocate) with constant amplitude but at a rate proportional to the difference in speed of the driving and driven members, an inertia mass is provided which under minimum load conditions is retained automatically by centrifugal action in the position for transmission of direct drive. As shown, one member 9 of the swashplate mechanism is fixed to the driving shaft 7, and the other member 27 is journalled in a casing 21 pivoted at 25 to the driven shaft. The casing 21 has integral weights 26, and when the shafts 7, 8 rotate at different speeds it oscillates between the full line and dotted line positions. Under minimum load conditions when the two shafts 7, 8 are rotating solidly the weights 26 occupy the dotted line position, centrifugal force acting on the weights tending to keep the weights in this position. In a modification oscillating weights are pivoted to the driven shaft and linked to the swash-plate. In another modification weights which reciprocate on the driven shaft are used. In the latter modification centrifugally acting weights are also mounted on the swash-plate at the connection of the links joining the swash-plate to the reciprocating weights. The driving and driven shafts may be locked together for direct driving by a clutch of known type.
Patent GB-793537-A (GB)
Title: Transistor oscillators
Inventor: FOUGERE GUY LLOYD
IPC: H03B5/36
Filed: 1955-03-14
Abstract: 793,537. Transistor oscillator circuits. NATIONAL RESEARCH DEVELOPMENT CORPORATION. March 12, 1956 [March 14, 1955], No. 7363/55. Class 40 (6). An oscillator comprises a point contact transistor T having its collector effectively earthed and a piezo-electric overtone crystal connected to the base in series with a reactor which at least partly counteracts the reactance of the transistor at the frequency of operation. As shown, the reactance is in the form of a variable inductor L1 and may be supplemented by a further inductor L2 in the emitter circuit. When the phase lag increases beyond #/2 radians a capacitive reactance is used (Fig. 3, not shown), the capacitor being shunted by a choke to provide a D.C. path.
Patent GB-512635-A (GB)
Title: Improvements in and relating to valves and to means for the cleaning thereof
IPC: F16K3/30
Filed: 1938-03-09
Abstract: 512,635. Cleaning valves. HOLMES & CO., Ltd., W.C., and HENSHAW, D. M. March 9, 1938, No. 7398. [Class 99(ii)] [Also in Group XXIX] A cleaning means for the interiors of valves comprises a flexible fluid-proof sleeve 1 with means, such as a flange 2, whereby it may be secured to a handhole in the casing, and with a cleaning implement 3, or implements, secured to the sleeve for manipulation by inserting the hand and arm into the sleeve. Clips or valve nipples may also be provided for securing collapsible grease or cleaning agent containers to the sleeve, and the latter may be turned inside out when not in use to rest in a housing outside the casing.
Patent GB-117062-A (GB)
Title: Improvements relating to Braiding Machines.
Inventor: HORN GUIDO
IPC: D04C3/00
Filed: 1917-01-17
Abstract: 117,062. Horn. G. Jan. 17, 1917. Braiding-machines.-Comprises means for tensioning and clamping the thread in circular braiding-machines The thread spool spindle 14 carries a brake-drum 15 encircled by a band secured at 17 and connected at its free end to a lever 27 under the influence of a spring 29 tending to apply the brake. The thread passes through a guide 34 and an eye 31, which is mounted upon a shaft 30 having an eccentric portion 32 engaging the lever 27, and under the influence of a spring tending to turn the eye 31 towards the spool. The thread also passes beneath a pin 38 on a clamping-member 37 mounted upon a shaft 35 cut away at 36 for the passage of the thread, and against which bears an adjustable spring 39. The parts 27, 31 control the tension of the thread. Upon failure of the thread, the member 37 moves under the in fluence of centrifugal force to clamp the thread between the shaft 35 and spring 39 and also stops the machine. In slow-moving machines, the member 37 is connected to the eye 31.
Patent GB-199437-A (GB)
Title: Improvements in regulating means for compression refrigerating apparatus
IPC: F25B41/06
Filed: 1922-03-15
Abstract: 199,437. Henderson, J. J. March 15, 1922. Fluid-actuating mechanism.-In an expansion valve ior compression refrigerating apparatus the diaphragm 81 forming one side of the chamber 63 is separate and disconnected from the oppositely placed stem of the poppet valve 72 controlling the supply of high pressure fluid through the inlet pipe 26, the stem 73 of the valve and the valve closing spring 76 being coaxial with the centre of the diaphragm. Between the stem 73 of the valve and the diaphragm is a separate bearing plate 77 with a front convex surface 78, which is pressed into engagement with the diaphragm by a spring 80. The valve is kept closed by the spring 76 until sufficient fluid has been drawn through the low pressure outlet pipe 62 for the diaphragm to be flexed, when the disc 77 is moved to press open the valve 72. The valve stem 73 is formed with a series of flats thereon and beyond the tapered valve seat 71 a series of radiating spaced ports 74 extends towards the interior of the chamber; this arrangement is stated to avoid the valve freezing as the refrigerant rushes in. The diaphragm is secured in position on the casing 63 by an annular ring 82, and the edges C of these members 63, 82 are curved instead of being sharp.
Patent GB-521138-A (GB)
Title: Improvements in goggles, eye-shields or the like for conserving vision
IPC: G02C7/16
Filed: 1939-03-09
Abstract: 521,138. Eye-shades and goggles. MARY, E. March 9, 1939, No. 7657. Convention date, March 11, 1938. [Class 97 (i)] Each shade comprises a dark chamber 1, shaped to fit tightly around the orbital cavity, and having a circular or elongated aperture 4 in alignment with the optical axis of the eye. The front of the chamber may be flat or curved. The chambers may be connected by a bridge 2 with or without nose-pieces, and side pieces 3 may be provided.