baber/WOPTO huggingface dataset:
Patent GB-225554-A (GB)
Title: Improvements in or relating to the de-excitation of electric generators
IPC: H02P9/12
Filed: 1924-11-25
Abstract: 225,554. Siemens - Schuckertwerke Ges. Nov. 26, 1923, [Convention date]. Exciting; protective or safety devices, auxiliary.-For effecting rapid de-excitation of an electric generator, a system of connections is employed whereby the field energy of the generator is returned into the exciting-machine, there being o subsequent short-circuiting of the generator field winding. Fig. 1 shows an alternator the field winding of which is energized by a shunt-wound exciter e. Between the exciter armature and the branching-off point of the two field windings b, c there is placed a resistance r with a normallyclosed switch s arranged in parallel. When it is required to de-excite the generator quickly, the switch s is opened, and the field energy of the generator surges back into the exciting-machine which will have its polarity reversed. The resistance r in conjunction with the other resistances and inductances makes the exciting circuit capable of oscillating. The shunt regulator d may be adjusted or a separate resistance may be introduced into the field circuit of the exciter simultaneously with the opening of the switch s. The field of the exciter, demagnetized or reversed, may be re-established from a separate source of continuous current; the exciter may be permanently excited by a separate source. Specifiation 148,625 is referred to.
Patent GB-242676-A (GB)
Title: Universal wood working machine
IPC: B27C9/04
Filed: 1925-11-10
Abstract: 242,676. Rozier, H. Nov. 10, 1924. [Convention date]. Planing ; mortising; tenoning.-In a combination wood-working machine a frame 1 which may be fixed to a carpenter's bench or other support carries pulleys 8, 11 with rubber-faced rims, over which a band saw may be stretched, passing also round a jockey pulley 9. The lower pulley 8 is driven through gearing by a treadle 3 or a motor 4. A grease holder 13 is used with the saw. A jig saw blade may be attached between rods 15, 16, the upper one being retained by a spring 17 and the lower one driven from the gearing. A bevel wheel attached to the pulley 11 rotates a vertical shaft 25 which may carry a mortising tool, a planing or moulding cutter, a polishing tool or inclined saws for cutting tenons. For mortising purposes a plate 30 is fixed to the bed by means of a screw 31, and is provided with guide rolls 41 and a ratchet feed roll 42. A half disc 34 is provided below the plate 30. movable on guides 33. An adjustable fence 54 is provided for use when planing, and a fan 55 for blowing dust away.
Patent GB-716046-A (GB)
Title: Ceramic dielectric material
IPC: C04B35/468
Filed: 1951-12-05
Abstract: A ceramic composition consists of less than 98.5 per cent. but more that 96 per cent. barium titanate and more than 1.5 per cent. and less than 4 per cent. zirconia and is polarized to exhibit permanent electro-mechanical transducing properties at normal ambient temperatures.  Compositions, for comparison, outside the invention are given containing, e.g. lead titanate, barium zirconate, and barium stannate.
Patent GB-307694-A (GB)
Title: Rotatable air or gas filter of the plate type
IPC: B01D45/08
Filed: 1928-10-05
Abstract: 307,694. Schirp, A. March 15, 1928, [Convention date]. Dust-collectors. - An air-filter comprises a series of corrugated plates a parallel to the air stream, mounted in a thin chill-cast frame, a number of such frames being mounted in chain form so that they lie together when on the sides and spread out at the bottom for cleansing in the moistening liquid in the bath s. The frame edges are tongued and grooved to fit into one another, and are mounted with alternate chain links c. In Fig. 3 the frames have lateral extensions u<1> to fit into the grooves of the side frames, or these extensions may be replaced by rollers.
Patent GB-534709-A (GB)
Title: Improvements in or relating to clutch mechanism
IPC: B64C25/24
Filed: 1939-10-25
Abstract: 534,709. Clutch and brake mechanisms. CROYDON ENGINEERING CO., Ltd., and CARTER, J. E. Oct. 25, 1939, No. 28656. [Class 80 (ii)] A clutch and brake mechanism comprises a positive clutch 3, 4, and a friction clutch 5, arranged in series between driving and driven shafts 1, 2, and a brake 6 which is applied to the driven shaft 2 and is adapted to be engaged when the clutches are disengaged. In the construction shown the shaft 1 may be driven by an electric motor and the shaft 2 mav drive the retractable undercarriage of an aircraft. The clutch member 3 is driven by a spider 19 keyed to the shaft 1. The shaft 2 carries a sleeve 21 having a flange 9, on one side of which is the friction clutch 5 and on the other side the brake 6. The member 4 of the positive clutch is freely carried by the sleeve 21. The mechanism is actuated bv the movable armature 8 of an electromagnet. Upon energization of the latter the armature 8 moves to the left and the clutch 3. 4 is first engaged. Upon further movement the friction clutch is engaged and the brake 6 is disengaged by the action of an adjustable sleeve 16 on a rod 14 connected to the armature 8 the sleeve 16 engaging an arm 15 on a presser plate 12. Upon de-energization of the electromagnet the clutches are disengaged by a spring 20 and the brake is engaged by springs 13, the movement of the armature 8 being limited by an adjustable stop 17. The motor driving the shaft 1 is de-energized at the same time as the electromagnet.
Patent GB-645196-A (GB)
Title: A portable elevator
IPC: A47C3/40
Filed: 1947-10-28
Abstract: 645,196. Load - handling machines. RUNDLE, L. A. Oct. 28, 1947, No. 28737. [Class 78 (iii)] [Also in Group X] A portable elevator comprises telescopic tubular members 9-12 which are screwthreaded internally substantially throughout their lengths and externally at their lower ends, all the screw threads being terminated, and the elevator being adapted to be extended from the collapsed position in which the members are all contained, one within the other, in the outermost member 12, to the elevated position by treadle means 27, 28 operated from a seat 1 carried by the innermost member 9 and which affects successively the rotation and extension of each tubular member, and the tubular members it contains, with respect to its adjacent outer member. The outermost member 12 is keyed to a collar 13 integral with the upper face 14 of a hollow base 15, the face 14 being in screw-threaded engagement with the annular portion 15A of the base. A rubber rim 16 provides substantially airtight contact of the base 15 with the ground. A footboard 28, Fig. 4, is secured to a rod 27 having at its upper end a spring controlled toothed rack 24 adapted to engage a bevelled gear-wheel 32, in turn engaging a gear-wheel 6 keyed by ratchet action to a collar 8 secured to the innermost member 9. Depression of the footboard 28 therefore causes rotation of the collar 8 and two stub rods 7, 7A on the collar engage spring- controlled trip levers 17-17E pivoted on the upper ends of the members 10, 11, 12 to effect their rotation. The arrangement is such that with the elevator in the collapsed position, the rods 7, 7A on rotation engage all the trip levers which are then in alignment and first cause the rotation of the outer member 12 and the other members it contains together with the collar 13 and face 14 with respect to the annular portion 15A of the base 15, causing a partial vacuum within the base. On reaching the upper termination of the screw thread of the portion 15A, continued rotation of the rods 7, 7A depresses the trip levers 17, 17A on the member 12, the rods then engaging only the levers 17B-17E of the members 10, 11, thus causing rotation and consequent elevation of the member 11 and the members 10, 9 inside it with respect to the now stationary member 12. When the upper termination of the internal thread of the member 12 is reached, the trip levers 17B, 17C are depressed and the rods subsequently engage the levers 17D, 17E only, to cause the rotation and extension of the member 10 and the member 9 inside it with respect to the member 11. Similar action results in the complete elevation of the tubular members. The elevator is collapsed by a handcrank which rotates the gear wheels 32, 6 in the opposite direction, the wheel 6 for this purpose being keyed temporarily to the collar 8 by a pin inserted in coincident holes in the wheel 6 and collar 8. The tubular members are collapsed successively, the arrangement of the trip levers being such that they offer no resistance to the rods 7, 7A.
Patent GB-1093992-A (GB)
Title: Improvements in or relating to a method of and apparatus for drawing wire and other filamentary material from a bin
Inventor: LEA FRANK
IPC: B65H49/34
Filed: 1965-05-07
Abstract: To prevent wire that is coiled in a bin from whipping against the upper edge of the bin as it is being withdrawn therefrom, the bin is rotated in such a direction and at such speed that during withdrawal of the wire from the bin the size of the balloon formed by the wire is suitably restricted.  The bin may be mounted on a turntable driven by a variable speed motor, electric or fluid, via a variable speed gear.  The motor may also drive a wire haul-off device.  There may be a pair of said rotating bins supplying wire to a high speed wire twinning machine.
Patent GB-890024-A (GB)
Title: Improvements in or relating to electric welding machines
Inventor: BEGG JAMES CADDIE
IPC: B23K11/10
Filed: 1958-09-09
Abstract: 890,024. Welding by pressure. AVIATION, MINISTER OF. Dec. 8, 1959 [Sept. 9, 1958], No. 28871/58. Class 83 (4). In a welding head for making circular welds an electrode wheel has a work-contacting peripheral edge of the same circumference as that of the weld path, the wheel is inclined over the area which will be enclosed by the path and is carried so that its axis will generate a cone about the axis of the weld path and the plane of the wheel will rotate but no relative rotation will take place between the wheel and the weld path. A steel shell case 11 is supported in a housing 10 with a circular base plate 13 thereon beneath and axially aligned with a main shaft 14 carrying a gear-wheel 19 in engagement with a wheel 20 on a driving shaft 21. The shaft 14 carries at its bottom end a plate 24 having a dovetail slot 25 adjustably carrying an inclined head 27 in which is rotatably mounted a shaft 31 supporting an electrode roller 28. Current is fed to the roller through a flexible conductor 39 and cooling water by a pipe 40. By rotation of the shaft 21 the roller is caused to roll around the plate 13 to stitch or seam weld the latter to the case. The roller which may be hollow may be frusto conical.
Patent GB-324032-A (GB)
Title: Improvements in or relating to supporting devices for use in connection with sound reproducing apparatus
IPC: G11B3/00
Filed: 1928-10-08
Abstract: 324,032. British Electrical Reproduction Co., Ltd., and Moulton, C. Berrage-. Oct. 8, 1928. Pick-ups, supporting.-An electrical pick-up or the like is adapted to be secured to a plate 9 attached to one end of a beam 1 formed from a metal strip bent upon itself at 6 so as to provide a pair of parallel spaced members, the beam being pivoted by a screw 2 at an intermediate point to the end of an arm 3 which is accommodated between the parallel members of the beam and which is carried by a vertical spindle and rotatably mounted in a fitting 5 fixed to the motor board or other suitable part of the gramophone or the like. The other end 6 of the beam extends beyond the spindle and is provided with an adjustable weight 11 to counterbalance the pick-up to a suitable extent. Reference has been directed by the Comptroller to Specification 143,883.
Patent GB-1471474-A (GB)
Title: Apparatus for producing suitcase frames
IPC: A45C5/02
Filed: 1974-07-01
Abstract: 1471474 Pressing material on to a rotating mandrel DANALET KUFFERTFABRIK AS 1 July 1974 [16 July 1973] 29117/74 Headings B8G and B8R Apparatus for winding suitcase frames comprises means for pressing the wound material on to a mandrel comprising a bodily movable, pivotable, common support, and two roller supports pivotably mounted on the common support and each mounting two rollers, the rollers being spaced circumferentially of the mandrel, and the pivot axis of the rollers, roller supports and common support being parallel to one another. Pneumatic jack 19 pivots arm 17 to cause rollers 11 to press glued strip 3 on to rotating, possibly heated, mandrel 2. Roller supports 12 are pivoted at 13 in support 14 which is pivoted at 15 in arm end 16 which may oscillate around its longitudinal axis. The strip is tensioned by spring- or weight-biased roller 5 and glued by applicator 8. Knife 20 cuts the strip to form two wound frames which are incorporated in a suitcase body and lid.
Patent GB-276200-A (GB)
Title: Improvements in the recovery of copper, zinc and other metals from solutions containing chlorides and sulphates
IPC: C22B3/44
Filed: 1926-11-18
Abstract: 276,200. Johnson, J. Y., (Duisburger Kupferh³tte). Nov. 18, 1926. Precipitating.-From the liquor obtained by leaching chlorinated pyrites cinder, after removal of the bulk of the copper, any remaining copper,. together with nickel, cobalt, and precious metals, may be precipitated by zinc or zinc dust.
Patent GB-832420-A (GB)
Title: Improvements in straight bar knitting machines
Inventor: START ERNEST
IPC: D04B11/00
Filed: 1957-09-17
Abstract: 832,420. Knitting-machines. COTTON Ltd., W. Sept. 15, 1958 [Sept. 17, 1957], No. 29188/57. Class 74 (2). To ensure that where longer loops than normal are being drawn on a straight bar (particularly a rib) machine they shall still be sunk by only one sinker at a time, a slurcock 2 has, in addition to its normal cam surfaces 2a, 2b, a steeper cam surface 2c formed on a slide 4 carried by the slurcock and controlled to be effective only during formation of such longer loops. During normal knitting, the slide yields to the pressure of the sinker jacks and slides under the slurcock until the jacks ride on the surface 2a; but when the main cam-shaft 29 is shogged in preparation for long loop formation (e.g. in a slack course) a disc cam 28 thereon acts through linkwork to interpose the end of a lever 11, carried by the slurcock body, in the path of a tail 9 on the slide 4, to hold the slide in position with the surface 2c effective during a traverse in the appropriate direction.
Patent GB-1095039-A (GB)
Title: Scan award system for a vending installation
IPC: G07F17/30
Filed: 1965-07-09
Abstract: 1,095,039. Coin-freed luke-boxes. SEEBURG CORPORATION. July 9, 1965 [July 10, 1964]. No. 29304/65. Heading G4V. Coin-freed apparatus includes a system which randomly offers an " award " at a given price less than that normally required. As particularly described with reference to a juke box, a long-playing record may be played for the price of three single plays when the award system is activated. Fig. 6 (not shown) illustrates a juke box with a panel SP bearing facsimiles 13 of LPs lit in apparently irregular manner via a rotary switch (RS) (see circuit diagrams of Figs. 1-4, not shown) as asynchronous motors (TCM, SCM) rotate. Insertion of money and selection of an ordinary record play causes credit switches (CS1, CS2) to activate via power discharge (P1) a start relay (SR1) (Fig. 1, not shown) which in turn activates a relay (SCR2) to condition the juke box for an " award." To indicate that an award is imminent, a gong (9) sounds and an indicia-bearing panel P1 is lit by a flashing lamp (CFL) (Fig. 4, not shown). When cam followers (TCF, SCF) are both adjacent a dwell area of their rotary cams (TC, SCC) (Figs. 3, 4, not shown) respectively associated with motors (TCM, SCM) the motors and rotary switch (RS) stop, and an LP facsimile 13 is " spotlighted." Gong (G) sounds again and a panel P2 is lit to indicate that the associated LP may be played for a reduced price. Simultaneously a thermal relay (TR) (Fig. 2, not shown) is activated to de-activate the award system after a time delay if the record is not played. Insertion of the correct money, however, activates a relay (CR3) which, in turn, after a button AB is pressed by the customer, causes activation of a select relay (SR4). This simultaneously deactivates power discharge (PD); activates a pricing motor (APUM); and cuts out the customer-operated record selection device, the " spotlighted " LP being selected by rotary switches coaxially rotating with switch (RS). While the selected LP is being played motor (APUM) removes the established credits and extinguishes the " award " conditioning status.
Patent GB-726816-A (GB)
Title: Bituminous composition
Inventor: SPERLING REUBEN
IPC: C08L95/00
Filed: 1952-11-20
Abstract: A homogeneous composition is prepared by adding 1-100 parts of a paste of polyvinyl chloride in a plasticizer to 100 parts of a melt containing at least 50 per cent of coal tar pitch, and stirring. Specified plasticizers are tri-tolyl and tri-cresyl phosphate, and di-butyl and di-octyl phthalate.  The melt can contain road tar, creosote oil, anthracene oil, heavy naphtha, or a low melting coumarone or indene resin.  Fillers, e.g. slate powder, asbestos fibre, china clay, whiting, cotton linters and slag wool, can be added.ALSO:A homogeneous bituminous composition is prepared by adding, in parts by weight, 1-100 of a paste of polyvinyl chloride in a plasticizer to 100 of a melt containing at least 50 per cent. of coal tar pitch, and stirring.  Specified plasticizers are tri-tolyl and tri-cresyl phosphate, and di-butyl and di-octyl phthalate.  The melt can contain road tar, creosote oil, anthracene oil, heavy naphtha or a low melting coumarone or indene resin.  Addition of the paste is at a temperature at least 50 DEG  C. higher than the softening point of the melt.  Powdered or fibrous fillers can be added, e.g. slate powder, asbestos fibre, china clay, whiting, cotton linters and slag wool.
Patent GB-1498961-A (GB)
Title: Printed transfer sheets for use in transfer printing
IPC: D06P1/642
Filed: 1975-06-27
Abstract: 1498961 Transfer printing process BEMROSE TRANSFER PRINTS Ltd 27 June 1975 [2 July 1974] 29349/74 Heading D1B A printed transfer sheet carries an image formed from one or more sublimable dyes and a sublimable organic azide, the azide group of which is thermally decomposable to a nitrene radical. Preferred organic azides are aromatic organic sulphonyl azides, aryl azides, organic carbonyl azides or heterocyclic azides, particularly 4-azidosulphonyl-phthalic anhydride. Sheet materials, particularly textile fabrics are transfer printed by contacting with the above transfer sheet and heating to a temperature above the dye sublimation temperature and above the temperature at which thermal decomposition of the azide occurs. Preferred textile materials are formed from polyamide, proteinaceous, cellulosic, polyester or acrylic fibres.
Patent GB-1397305-A (GB)
Title: Semiconductor light source
IPC: H01L33/34
Filed: 1972-06-22
Abstract: 1397305 Electroluminescence I V VALTERMASLOKOVETS J A VODAKOV GALOMAKINA E N MOKHOV I I KRUGLOV I V RYZHIKOV V I PAVLICHENKO T G KMITA G F KHOLUYANOV and E E VIOLIN 22 June 1972 29356/72 Heading C4S [Also in Division H1] A semi-conductor light source comprises a first N-type region in a SiC substrate, having an uncompensated majority donor concentration lying in the range 0À8 x 10<SP>18</SP> to 5 Î 10<SP>18</SP> cm.<SP>-3</SP>, a thin low resistivity surface P-layer 0À1 to 3 Á thick doped with an acceptor impurity with a low activation energy and having a solubility in SiC lying in the range 2 x 10<SP>18</SP> to 2 Î 10<SP>20</SP> cm.<SP>-3</SP>, and a central layer, 0À05 to 1 Á thick, with donor and acceptor dopants to a concentration of 0À1 Î 10<SP>18</SP> to 2 Î 10<SP>18</SP> cm.<SP>-3</SP>, the central activated and compensated layer having a resistivity > than the first region by at least three orders of magnitude. Donors and acceptors are specified combinations of O, B, N, Be, Al, Ga and Sc, P-type layers may be Al or Ga, and the substrate may be doped with N or N and O to provide the first region. Specific light sources and low temperature operation are detailed. The P-N junction may be formed by Al diffusion in an inert atmosphere including rare earth vapours. Diffusion techniques are preferred with an inert atmosphere including a small addition of activator to reduce outward diffusion. Epitaxial or liquid phase growing is also mentioned. Fabrication details and applications are included.
Patent GB-926052-A (GB)
Title: Coal-cutting machine
Inventor: HODKINSON ALEC
IPC: E21C35/06
Filed: 1960-08-25
Abstract: 926,052. Mineral-mining machines. DOWTY MINING EQUIPMENT Ltd. Nov. 27, 1961 [Aug. 25, 1960; Dec. 15, 1960], Nos. 29403/60 and 43248/60. Class 68 (1). Means are provided between the body of a mineral-mining machine and a track such as a conveyer along which the machine moves during a mining operation for tilting the body with respect to the track about an axis parallel to the length of the track. The means are preferably single-acting jacks 10 acting between a sledge 3 slidable along the conveyer and the underside of the body of the machine which is pivotally mounted at 9 on the sledge.
Patent GB-940339-A (GB)
Title: Apparatus for expanding a tubular web of knitted fabric
Inventor: LAGE HERBERT SCHATTON
IPC: D06C5/00
Filed: 1961-08-15
Abstract: 940, 339. Stretching tubular fabrics. BENTELER-WERKE A.G. Aug. 15, 1961, No. 29451/61. Heading D1S. Apparatus for expanding a tubular web 1 of knitted fabric comprises a ball ring 3 succeeded by a roller rectangle 5 over which the web is gradually drawn and widened, and two stirrups 11 over which the web passes in flat condition, the web being stabilized by guiding over rollers 14 pressing it into grooves 15 in counter-rollers 16 and then being continuously passed on for further processing. The ring 3 preferably consists of twelve wooden balls strung on a circular wire and the web is opened thereby to a substantially circular crosssection 4. The roller rectangle 5 comprises four rollers 8 mounted on a frame 7 and supported by four driven rollers 10 so that the web is opened into rectangular cross-section 6. The fabric then passes over rollers 12 on the stirrups 11 pivoted at 20 and which are urged apart by lazy tongs 18, Fig. 1, having tension springs 19 or rubber or synthetic plastic bands causing them to extend outwardly. The rollers 14 are mounted on holders 17 attached to the lazy tongs 18 and are pressed thereby into the grooves 15 in the driven counterrollers 16 to stabilize the fold lines of the flattened tube. Rollers 30 mounted on arms 29 which may be spring urged outwardly retain the web 1 in the stretched condition. The bearings of the rollers 16 are connected to bearings 23 each having a threaded nut engaged on right-hand and left-hand screw threads on a spindle 24 to adjust the position of the rollers 16 driven by bevel wheels which are axially displaceable either by bearings 23 through a fork or by spring pressure. In a modification, Fig. 5, variable weights 19' are provided on the lazy tongs 18 connected by ball rings 40. In a further modification, Fig. 4, a cylinder 32 having a piston 33 loaded by an adjustable spring 34 is connected by a cylinder 45 to cylinders 36, 37 having piston rods 38a, 39a connected to the holders 17 to urge the rollers 14 outwardly.