baber/WOPTO huggingface dataset:
Patent GB-407711-A (GB)
Title: Improvements in and relating to control systems for the field windings of dynamo-electric machines
IPC: H02P7/34
Filed: 1932-08-22
Abstract: 407,711. Control of D.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.- (Assignees of Eaton, J. ; Rosendale Road, Schenectady, New York, U.S.A.) Aug. 22, 1932, No. 23492. Convention date, Aug. 21, 1931. [Class 38 (iii).] Varying electromotive force.-The rates of rise and decay of the field of a generator, such as is used in a Ward-Leonard elevator system are reduced by exciting the field partly from the generator and partly from another source. The generator 10 supplies a load (not shown) and its field 11 is connected to the armature through a resister 12 of such magnitude that the generator fails to self excite. Closure of a switch 14 causes the field 11 to be excited from an exciter 17 through a current-limiting resister 13, most of the current being bye-passed by the armature. As the E.M.F. of the generator builds up, less current is bye-passed through the armature until finally the armature supplies a component of exciting current. When switch 14 is opened, the generator fails to maintain its excitation and the field decays, but at a rate less than that due to its self-inductance alone. The invention is shown embodied in an elevator control system in Fig. 3. The generator 26 supplies the elevator motor 24, and its field 28 is separately excited over reversing contactors 33, 34 and resister excluding contactor 43 controlled by car-switch 41, and is shunt excited through resisters 38<a> and 44. In addition there is provided an exciter machine 36, the field 39 of which is traversed by the load current, and the armature of which is in series with a resister 35 and the field 28 when a switch 37 is closed. The exciter compensates for the I<2>R lower in the load circuit. When the switch 37 is opened, a suicide connection is formed through the exciter 36, resister 40, field 28 and resisters 38 and 35, thus killing the residual magnetism of the generator 26.
Patent GB-788331-A (GB)
Title: Hopper for discharge of potatoes or other root crops
IPC: B65D88/58
Filed: 1955-08-16
Abstract: 788,331. Potato hoppers. REEKIE, J. M. Aug. 16, 1956 [Aug. 16, 1955], No. 23560/55. Class 78 (1). A hopper for discharge of potatoes to a conveyer 10 includes two spaced side walls 1, 2, a back wall 3 joined to said side walls, and a grill 4 which slopes downwardly towards the hopper outlet 5 and has its lower edge portion pivotally and horizontally mounted on the front edge 6 of the hopper and at least one leg 7 depending from the upper edge portion of said grill and adapted to sustain said upper edge portion at a predetermined height from the ground. As shown, the hopper is provided with two adjustable legs 7 so as to accommodate the hopper to the elevator 10, the potatoes being charged into the hopper and delivered by the elevator to a waiting truck.
Patent GB-1120955-A (GB)
Title: Improvements in or relating to ground effect machines or like movable bodies
Inventor: GUIENNE PAUL FRANCOIS
IPC: B60V1/00
Filed: 1966-05-26
Abstract: 1,120,955. Air cushion vehicles. BERTIN & CIE. 26 May, 1966 [26 May, 1965], No. 23560/66. Heading B7K. An air cushion vehicle has a base platform 2 provided with one or more cushion-containing skirts 1 each having the profile of a frustum of a cone, with the larger diameter adjoining and secured to the platform by attachments 6, 7 and the smaller diameter 3 in close proximity to the surface 4 over which the vehicle operates. The axis AA and both forward and aft faces as viewed in side elevation are inclined rearwardly and downwardly and angular limits for such inclinations to ensure stability of'the skirt are specified.
Patent GB-835068-A (GB)
Title: Improvements in or relating to windows
Inventor: BUTLER ROY THOMAS
IPC: B60J1/14
Filed: 1957-07-25
Abstract: 835,068. Vehicle windows. FORD MOTOR CO. Ltd. May 6, 1958 [May 25, 1957], No. 23566/57. Class 20(3) [Also in Group XXV] A vehicle ventilator window is triangular in shape with the apex mounted in a rubber pocket forming a universal bearing. Preferably the pocket is integral with an L-section triangular draught excluder 2. The lower edge of the window is mounted in a channel 4 connected to the frame by a single link 5. The window thus may be moved to air scoop or extraction positions or to a position in which the lower edge is spaced parallel to the frame
Patent GB-1105940-A (GB)
Title: Improvements in or relating to data processing machines
IPC: G06K1/00
Filed: 1965-06-03
Abstract: 1,105,940. Selecting records. ROBERT BOSCH G.m.b.H. 3 June, 1965 [4 June, 1964], No. 23658/65. Heading G4M. A paper tape has a thin film of metal applied to one surface, the film being burnt away at selected positions to record characteristics of items such as documents. The tape may be sensed photo-electrically, light passing through the translucent paper where the metal foil has been removed.. The characteristics sensed from the tape are compared with desired characteristics set up on switches, a matching item causing print-out of the corresponding document identity.
Patent GB-333385-A (GB)
IPC: B22C1/16
Filed: 1929-08-01
Abstract: 333,385. Stahn, A., (Assignee of Michaelis, K.). April 16, 1929, [Convention date]. Cores; core materials. -Cores of a porous material such as sand are made superficially gas tight by impregnating or coating with an inorganic substance which will melt at the casting and preferably at the drying temperature. An 8 to 25 per cent solution of boric acid, phosphoric acid, or borax with sodium thiosulphate may be used or the same percentage may be mixed with a finely ground refractory material and sufficient water to enable the mixture to he spread.
Patent GB-586816-A (GB)
Title: Improvements in or relating to the locking of nuts on bolts
IPC: F16B39/04
Filed: 1944-11-28
Abstract: 586,816. Locking nuts. GODFREY, W. T. Nov. 28, 1944, No. 23711. [Class 89 (i)] Nuts locked by pins passing through transverse holes in the bolts have the pins retained in place by clips surrounding the nuts. A clip 1, Fig. 6, is bent up from spring strip metal and it has an upstanding lug 2a in which the pin 2 is riveted. The side having the lug is cranked at 1b to engage the nut near the corners only and it is longer than the side of the nut so that the other sides, bent to the shape of the nut, engage only at the out-turned ends 1a. The pin may be integral with the clip being formed from an extension of the lug, bent up and rolled to circular form. In a modification, the pin is carried at 1c, Fig. 3, by a loop formed in a spring wire which may be double, as shown and welded at 1d, or may be single. The clip may surround all the sides of the nut and have diametrically opposed. lugs to engage the ends of a pin separate from the clip. The nuts may be castellated or plain. The clips may be of circular shape for use with a range of nut shapes.
Patent GB-339239-A (GB)
Title: Improvements in or relating to chain driving gear
IPC: B62D55/096
Filed: 1929-08-02
Abstract: 339,239. Link-Belt Co., (Assignees of Brandt, W. F.). March 30, 1929, [Convention date]. Driving and like chains with separate joint pins. - To ensure constant angular velocity and tangential entry and departure in silent chain gearing, the opposed working surfaces of the teeth of chain and sprocket are conjugate and are so formed by generating the teeth of one element with .respect to the arbitrarily chosen other element. " Chordal action," i.e. transverse wave motion of the chain, is thereby overcome and correct tooth relation is independent of increase in pitch due to stretching the. chain. The links may be of the outside as shown, of the inside contact type and in the preferred form shown the inside contacting teeth A<7> are generated with respect to existing sprocket teeth A<1>. Clearance is provided by increasing the distance between the working surfaces of a link and by deepening the pockets. This may be done by generating each working surface independently with reference to centre lines spaced apart by the required amount of clearance. The outer link surfaces A<6> are cut away, and the arrangement is such that there is never simultaneous contact between a sprocket tooth and the working surface of two teeth on the same link. The clearance B between a following tooth on the entry side of the chain, Fig. 2, and a tooth A<1> on the driving sprocket decreases as at B<1> &c. progressively around the periphery of the sprocket until a transition point is reached whereafter there is a gradually increasing clearance B<4> &c. on the departure side Fig. 4, between the leading teeth of the chain and the sprocket teeth until at the part 6, the chain is free to move in its tangential path. The reverse occurs on the driven sprocket. The position of the transition point, at which there may or may not be a floating chain link may vary within the total angle of contact. A method of obtaining the required link-tooth form by drawing in the trace of the profiles of an arbitrarily chosen sprocket tooth on transparent paper is also shown and described. The pivot pins A<8>, which are upset against holding washers, may be solid, hollow or built-up.
Patent GB-866964-A (GB)
Title: Improvements relating to automatic washing machines and methods of operating them
IPC: D06F35/00
Filed: 1959-07-10
Abstract: 866,964. Washing-machines. MASCHINENFABRIK P. PFENNINGSBERG G.m.b.H. July 10, 1959 [Aug. 25, 1958], No. 23811/59. Class 138 (2). A process for operating an automatic washing- machine comprises two stages, in the first of which the amount of washing water in the machine is reduced continuously or step by step, and in the second of which the amount of water remains constant. The first stage provides a rapid temperature rise for a given heat supply rate, and a substantially constant concentration of washing agent in view of the dependence on time and temperature of the solubility of the agent. In Fig. 4 an elbowshaped overflow pipe 10 is rotated by a worm drive 12, 13 to continuously lower its inlet end, by means of a motor controlled by a programme switch. In place of the pipe 10 a centrallymounted disc with an eccentric overflow opening may be used (Fig. 5, not shown). Fig. 7 shows a further modification comprising a number of outlet pipes 19, 20, 21, and valves 22, 24 controlled by a programme switch: The invention can be applied to machines to which fresh water is supplied continuously or intermittently provided that the quantity flowing in is smaller than the quantity removed during the first stage of the process.
Patent GB-952749-A (GB)
Title: Improvements in or relating to fishing reels
IPC: A01K89/015
Filed: 1960-07-07
Abstract: 952,749. Fishing reels. A. TOPERCZER, and J. GONCZ. July 7, 1960 [March 4, 1960], No. 23825/60. Heading A1A. A fishing reel comprises a line drum 3 driven in winding-in direction by a coil spring 5, a stopping lever 17 and adapted to engage wedges 11 on the drum to prevent rotation thereof and a release lever 13 adapted to be moved by the pull of a fish on the line to disengage the stopping lever 17 from the wedges 11. The lower end of the release lever 13 is pivoted to the stationary frame 2 of the reel and its resistance to pivoting is adjusted by a nut adapted to clamp the lever to the frame. The upper end 19 of the release lever 13 is cone shaped and has a groove for the line. The stopping lever 17 is pivoted at 14 to the frame 2 and is urged to disengage the wedges 11 by a spring 23. A roller 15 on the stopping lever 17 engages a semi-circular cam 12 formed on the lower end of the release lever and shaped so that when the release lever is upright (as shown) the brake is applied but when the release lever is displaced by the pull of a fish the stopping lever is moved by its spring to disengage the wedge 11 and to cause the release lever 13 to swing into a horizontal position. In this position the line slips from the groove in the cone shaped end 19 of the release lever. The coil spring 5 is attached at one end to the frame 2 of the reel and at its other end to a spring barrel 4 which is connected by a ratchet wheel 7 and pawl 8 to the reel frame and by a ratchet wheel 9 and pawl 10 to the line drum. After winding up the spring the pawl 8 is disengaged from its ratchet wheel 7 by rotating a knob 21 so that the drive of the spring is transmitted through the other pawl 10 and ratchet wheel 9 to the line drum. The other pawl 10 can be disengaged from the wheel 9 by rotating a knob 25.
Patent GB-463409-A (GB)
Title: Improvements in carrier signalling systems
IPC: H04B1/68
Filed: 1935-08-26
Abstract: 463,409. Multiplex transmission. GENERAL ELECTRIC CO., Ltd., FARREN, L. 1., and WESTELL, E. P. L. Aug. 26, 1935, No. 23861. Drawings to Specification. [Class 40 (iv)] In a multiplex carrier system in which carrier frequencies are harmonics of a fundamental wave which is outside the transmission range of the system, (e.g. outside the range of the repeaters), two pilot waves differing in frequency by the fundamental frequency are sent over the system and used at the receiving end for deriving a wave of the fundamental frequency for the control of a harmonic generator for demodulation. The pilots may be used in addition for the purpose of automatic volume control. They may be derived from a square wave generator which supplies odd harmonics for use as signal carriers and in practice always includes even harmonics in its output, or may be obtained by modulating a carrier not corresponding to any harmonic with the fundamental frequency. Filters of the kind employing piezo-electric elements may be used. Specification 389,917, [Group XL], is referred to.
Patent GB-891337-A (GB)
Title: Marine bearing
IPC: F16C33/22
Filed: 1958-07-24
Abstract: 891,337. Bearing bushes. BORG-WARNER CORPORATION. July 24, 1958 [Aug. 16, 1957], No. 23896/58. Class 12 (1). A light marine bearing, for supporting the propeller shaft e.g. of a boat and composed of non-conductive materials which eliminate corrosion and electrolytic action, comprises concentric supporting and bearing sleeves 1, 2 which are made respectively of moulded plastic material, e.g. phenolic resin reinforced with a fibreglass fabric 5, and rubber or synthetic rubber. The heat and pressure to which the rubber is subjected during pressure moulding displaces a certain amount of rubber into the interstices of the fibre glass projecting from the inner surface of the supporting sleeve to provide a mechanical bond between the two materials. Preferably a chemical cement, or bonding agent, is also employed to enhance the bond of the rubber to the plastic resin. The bearing sleeve 2 has a series of longitudinally extended grooves 3 for the passage of water through the bearing.
Patent GB-148264-A (GB)
Title: Process for the production of pure phenolic resins, basic phenolic resins or phenol esters with a view to obtaining plastic insulating materials, lacquers, enamels and dressing preparations
IPC: C08G8/28
Filed: 1919-09-30
Abstract: Purified phenolic resins obtained from the crude condensation products of phenols and aldehydes by successive washing with hot water, dilute mineral acid, and cold water, may be dissolved in alcohol, acetone, amyl acetate, &c. to form varnishes or lacquers; by adding dyestuffs they give preparations suitable for finishing fabrics.ALSO:Purified phenolic resins are obtained from the crude condensation products of phenols and aldehydes by successive washing with hot water, dilute mineral acid, and cold water.  The products are converted into insoluble products by heating to 100 DEG  C., or they may be dissolved in alcohol, acetone, amyl acetate, &c. with or without addition of mineral colours to form varnishes or lacquers; or by adding dyestuffs they give preparations suitable for finishing fabrics.  The purified phenolic resins combine with bases, such as lime, baryta, iron oxide, &c. or with polyvalent alcohols such as glycerine, or with mixtures of bases and glycerine; the resulting products are hardened by heating to 100 DEG  C.  Examples are given of mixtures of the purified resin with aluminium hydrate, or with glycerine and ferrous hydrate.
Patent GB-891411-A (GB)
Title: Improvements relating to the frames of belt-type conveyors
IPC: B65G21/06
Filed: 1959-07-13
Abstract: 891,411. Endless belt conveyers. PIEMONT, G. July 13, 1959 [Jan. 23, 1959], No. 23964/59. Class 78 (1). A frame for an endless belt conveyer comprises a plurality of identical sections, each section comprising a pair of side members 1 spaced apart at intervals along their length by upper and lower cross members 2 which are connected directly to the side members by means of bolts 3, the sections being connected together with the side members abutting endto-end by cross members 2A, Fig. 4, which are each bolted directly to the side members of two adjacent sections.
Patent GB-976991-A (GB)
Title: Apparatus for passing articles thro gh a wall opening
Inventor: MCMANUS ROBERT DAVID
IPC: E05G7/00
Filed: 1962-06-21
Abstract: 976,991. Delivery receptacles. WESTMINSTER GUILD Ltd. June 21, 1963 [June 21, 1962], No. 23992/62. Heading A4T. Apparatus for passing articles through a wall opening comprises a drawer 1, 2 having a hinged bottom 16 and sliding on rollers 7 from a position in which space 2 is open on the outside of the wall as in Fig. 5 to a position where it is open on the inside of the wall as in Fig. 1, and means for automatically emptying the drawer on the inside, the drawer being movable from the inside to the outside by actuation of outside release means, although a clerk may actuate a selector means whereby the drawer movement may be controlled from inside or outside. During the day when a clerk is on the inside, a customer operates a key switch so that an electric motor via gears 12, 13, 14 moves the drawer outside, a slot 6 in the drawer eventually engaging a pin 21 to pull a panel 19 off a counter 10 and cover a drawer contents extraction opening. On extracting the key, the drawer moves inside, shifts panel 19 and the clerk removes the contents through the opening. At night a safe is moved below counter 10 so that an abutment 29, Fig. 5, rotates levers 27, 19 whereby a bar 25 locks panel 19 over the extraction opening and lifts pins 21 out of the path of the drawer. On inward movement of the drawer, a solenoid, or a lever 30 engaging safe abutment 31, releases catch 18 and opens the drawer bottom 16 to discharge the contents through a hole in the top of the safe.
Patent GB-917635-A (GB)
Title: Improvements in or relating to zone melting apparatus
IPC: C30B13/28
Filed: 1959-07-13
Abstract: <PICT:0917635/III/1> <PICT:0917635/III/2> A rod of semiconductor material is zone refined in an apparatus which comprises a high-vacuum metal housing of which the base and roof are non-detachably connected at the side walls, said side walls having an opening closed by an air-tight door with an observation window and a second opening providing a connection between the apparatus and a high pressure pump.  As shown, the apparatus comprises a water-cooled metal housing 2 and hinged closure plate 3 having an observation window comprising a hard glass pane 23 interposed between a readily removable thin glass screen 24 to provide protection against soiling and a screen 27 of non-splinterable glass, which may be of polymethacrylate and may be coloured, to protect the observer.  The housing is connected to a high vacuum pump (not shown) via an opening 4.  A rod 6 to be zone-refined is held by holders 7 attached to shafts 8 which may, be moved longitudinally and/or rotated.  The rod may in addition be held by gripper arms 15 having protective quartz collars 16. Heating is effected by a water-cooled induction heating coil 11 conveyed by a longitudinally movable device 13 comprising spaced concentric current lead tubes.  A heat shield 14 separates the device 13 from the heating coil 11.  A liquid air cooled cooling trap (not shown) may be situated in a vacant corner of the housing. Specification 775,986 is referred to.
Patent GB-773283-A (GB)
Title: A multi-duty hand truck
IPC: B62B1/12
Filed: 1955-08-20
Abstract: 773,283. Hand trucks. ETHERIDGE, J. H. Oct. 26, 1955 [Aug. 20, 1955], No. 24050/55. Class 108(1). A collapsible hand truck has main frame members 11 to the upper ends of which are pivoted main support members 18, 20 for supporting a tray or bin. The members 18 are retained in the horizontal position by struts 22 pivoted together and to members 24 at 23. The ends of the members 24 are secured to a transverse bar 25 carried by radius rods 26 pivoted to the frame members 11 so that when the rods 26 and bar 25 are rotated upwardly the framework will collapse until all the members lie close to the main frame. The members 24 may support a tray and another tray may be carried by the transverse member 35 and axle 13.
Patent GB-721407-A (GB)
Title: Improvements in or relating to locking latches for doors and like closures
Inventor: KEUSKAMP FRANSISCUS
IPC: E05B15/02
Filed: 1952-09-25
Abstract: 721,407. Door latches. PRETORIA METAL INDUSTRIES, Ltd. Sept. 25, 1952, No. 24092/52. Class 44, [Also in Group X] A locking latch construction for doors or the like includes in combination a fixed door surround frame member 1 of hollow sheet material and generally channel cross section which is formed with a longitudinal rebate 2 along an edge thereof adjacent one side (referred to hereafter as the inner side) to receive the free edge of the door, the part of the frame member which constitutes the surface of the rebate which lies adjacent to the edge surface of the door when in its closed position (referred to hereafter as the edge surface) having a cut away 3 over part of its longitudinal length for substantially the full width of this edge surface, a hollow open-sided box like attachment 7 secured (e.g. by welding within the frame member behind this cut-away aperture 3 with its open side facing towards the aperture, and having a flange or side wall 7a lying in a plane generally parallel to the inner side of the frame 1 but on the outer-side of the door when in its closed position, this flange or side wall 7a being formed with a longitudinal slot 11, and a striking plate 4 arranged to be adjustably secured substantially flush with the edge surface of the rebate, and formed of sheet material of generally channel cross section and having outwardly turned flange extensions at the free edges of the channel, one of such flange extensions 4b being arranged to lie against the edge section 2a of the inner side of the frame member which defines one edge of the cut-away aperture, with the channel portion lying within the cutaway aperture to form a locking recess or latching slot when the other flange extension 4c extends through the slot 11 in the flange or side wall of the box like attachment, so as to permit the position of the striking plate to be adjusted on the plane of the edge surface of the rebate. The contacting surfaces of the flange 4b and edge 2a are roughened. In addition to being fixed to the member 7 by the tongue 4c the plate 4 is also secured to the member 7 by two screws which pass through elongated apertures 5 in the base of the channel into tapped holes 10 in the member 7. The screws pass through a washer plate positioned in and fitting the bottom of the channel, the washer plate having two elongated holes at an angle to those in the channel so that the position of the striking plate can be adjusted. Two circular washers each with an eccentrically positioned hole may be used instead of the single washer plate. The door flange may also have a screw passing through it which engages a tapped hole x in the side of the channel to adjust the position of the striking plate.