baber/WOPTO huggingface dataset:
Patent GB-1253776-A (GB)
Title: Traction motor control system
IPC: B60L9/04
Filed: 1970-04-02
Abstract: 1,253,776. Chopper control arrangement. WESTINGHOUSE ELECTRIC CORP. 2 April, 1970 [21 April, 1969], No. 15641/70. Heading H2J. [Also in Division G3] Traction motors M1-M4 with fields F1-F4, controlled in both motoring and braking modes by a chopper circuit 20 receiving ON and OFF signals from a control network via leads 74, 66 respectively, are switched between modes by relays A, B, C, such that A1 closes and A4 opens, or vice versa, while A8, B1, A9 and B2 co-operate to ensure that a gate 68, which transmits the ON pulses to the chopper only if opened by a voltage from 92, remains non- conductive throughout the change of mode. The arrangement is shown in the braking mode, and when relay B is energized by switch S, contacts B2-B4 close after B1 opens, and switches A1-A3 close before A9 closes, whence C1, C2 close. The enabling signal to the gate 68 travels via A8 and B1 in the braking mode and via C1, A9 and B2 in the motoring mode. For motoring the motors M1, M2 and M3, M4 are in series pairs, the pairs connected in parallel, and in series with the chopper 20, smoothing reactor 26, and current detector 91, and for braking, armatures 1 and 2, in series with fields 3 and 4 are in parallel with armatures 3 and 4 in series with fields 1 and 2, all shunted by resistor 24, and resistor 22 intermittently shunted by the chopper to control the braking effort. The chopper comprises thyristors 38, 40 and 42, reactor 46 and thyristor 42 providing a by-pass circuit for the initial current, and 40 being operative for quenching. Pulses are supplied via transformers 52 and 54, 52 having mutually isolated secondaries for thyristors 38 and 40. Diode 28 by-passes the back e.m.f. of the motors when their current is switched off. Oscillator 62 provides OFF pulses Pf to the chopper, on lead 66 at regular intervals, and, after a controlled time delay provided by delay 70 in response to control system 86-88, 90, and comparator 80 which may be a differential amplifier, comparing the desired with the actual motor current, a series of ON pulses P n  is supplied on lead 74, provided the gate 68 is open. The control scheme of pulses may alternatively be of the variable frequency or ripple control type. Circuit 88 limits the allowable rate of change of the delay, and shapers 72, 64 may be differentiating circuits. Overcurrent protection 98, 100, 102, OL-1, OL-2 may be provided, although C2 may be operated directly by relay A, and overcurrent protection omitted.
Patent GB-579019-A (GB)
Title: Improvements in or relating to electric plug connectors
IPC: H01R13/68
Filed: 1944-08-17
Abstract: 579,019. Two-part couplings. WANDSWORTH ELECTRICAL MANUFACTURING CO., Ltd., and BATCHELOR, T. Aug. 17, 1944, No. 15699. [Class 38 (i)] In a plug connector, a cartridge fuse 19 is located in an internal pocket 14 and is connected electrically between a terminal post 18 and one of the two current-carrying pins 4. Sleeve contacts 12, 16 receive the fuse 19, the contact 12 being integral with a lug secured to the base 1 by the nut 9 on the pin 4, and the contact 16 being housed in the cover 2 together with its associated terminal 18. A finger plate 11 pivoting on the pin 4 in a shallow recess in the base 1 normally covers the pocket 14 and retains the fuse 19 ; this plate being moved aside to enable a spring 15 to eject the fuse for replacement. The terminals for the second, unfused, current-carrying pin and for the earth pin 6 are housed in the base 1. A removable flex grip is provided in the base, and semi-circular grooves in the base and cover locate the flange of an insulating bush 25 when the connector is clamped together.
Patent GB-1109193-A (GB)
Title: Improvements in or relating to overpowder wads for shot gun cartridges
IPC: F42B7/08
Filed: 1966-04-07
Abstract: 1,109,193. Cartridge wads. HIRTENBERGER PATRONEN-, ZœNDHœTCHEN- und METALLWARREN-FABRIK A.G. 7 April, 1966 [26 Jan., 1966], No. 15752/66. Heading F3A. A shot cartridge over-powder wad comprises upper and lower tubular members 1, 2 of plastics material, preferably a polyolefin. Each member is divided by a respective partition 3, 4. The upper part 5 of the lower member fits inside the upper member 1 and locates against the partition 3. The upper part 5 also has a waisted or constricted shape as shown and the wall thickness is chosen so that further narrowing of the constricted portion by compression during firing ensures uniformity in reduction of recoil according to requirements. In a modification, the upper tubular part of member 1 is extended to form a sleeve (6), Fig. 2 (not shown) for the shot charge. This sleeve is slotted at (7) and serves to protect the gun barrel and improve the precision of the shot.
Patent GB-979319-A (GB)
Title: Method and apparatus for texturing yarns
IPC: D02G1/00
Filed: 1962-04-25
Abstract: 979,319. Curling fibres. MONSANTO CO. April 25, 1962 [May 1, 1961], No. 15789/62. Heading D1F. Apparatus for coiling yarns comprises a non- rotatable tapered member 32 about which yarn is coiled and a yarn heater 34 for heating the yarn during part of its movement along the member towards the smaller end. Yarn, from a supply package 21, Fig. 1 (not shown), passes through an axial passage 15 in a fixed shaft 9, to a tubular element 28 fixed to a casing 1 which is rotated by a belt 38. An opening 2 separates the casing into two cylindrical parts 3, 4 joined by a strip 5 (Fig. 4 not shown) to which a member 25 is connected. The yarn from the element 28 passes through a bore 30 in the casing and is wound around the tapered pin 32 which is joined to a shaft 8, fixed to the other stationary shaft 9 by gearing 22, 24, 23 mounted in the member 25 and rotatable about gears 13, 14. The coils in a relaxed state pass through heater 34, where the yarn contracts, and are then cooled at the end of the pin before being wound on a bobbin.
Patent GB-741166-A (GB)
Title: Improvements in or relating to the conversion of continuous rotational movement into oscillatory rotational movement
Inventor: DELGADO PATRICIO EUSTACE
IPC: F16H37/12
Filed: 1953-06-09
Abstract: 741,166. Converting rotary into oscillating motion. BRITISH VACUUM CLEANER & ENGINEERING CO., Ltd. June 3, 1954 [June 9, 1953], No. 15872/53. Class 80(1) Oscillating movement is imparted to a shaft 7 from a continuously rotating shaft 2 by. means of a crank 3 on the shaft 2 which reciprocates an arm 1 of channelsection. Secured at its ends to the arm 1 is a chain 5 which passes over a sprocket 6 on the shaft 7. A boss 14 of the sprocket bears against a curved face cam 13 supported on the arm 1 against a resilient pad 16 in order to maintain the chain tension.
Patent GB-495302-A (GB)
Title: Improvements in and relating to apparatus for the production of curved, elongated profiled sheet-metal members of channel cross section
IPC: B21D5/06
Filed: 1938-05-27
Abstract: 495,302. Sawing. JUNKERS FLUGZEUG-UND-MOTORENWERKE AKT.-GES. May 27, 1938, No. 15884. Convention date, May 31, 1937. Drawings to Specification. [Class 145 (ii)] [Also in Group XXII] Saws for severing tubes longitudinally are resiliently mounted and fitted with side discs which act as depth stops.
Patent GB-912504-A (GB)
Title: Improvements in vehicle lighting and turn signalling systems
Inventor: HOLLINS JESSE RICHARD
IPC: B60Q1/38
Filed: 1959-05-08
Abstract: 912,504. Road traffic signals on vehicles. SIGNAL - STAT CORPORATION. May 8, 1959, No. 15930/59. Class 118. In a vehicle lighting and turn-signalling system, movement of the control lever 15, of the turn-signalling switch 13 closes either contacts 41, 43 or 41, 44 to complete the circuit from battery BA via flasher FL to either the right RFSL, RRSL or left LFSL, LRSL turn indicators, and also operates one of the members 25 to open one of the sets of contacts 30, 31 and so disconnect the associated tail lamp (LTL on RTL) from the battery. As shown, an additional switch 20 having the two control members 25 is mounted on the steering column 10 behind the switch 13, so that the lever 15 lies between the members 25. Movement of the lever 15 to signal a turn causes it to engage with a projection 26 on one or other of the members 25 to operate it.
Patent GB-121149-A (GB)
Title: Improved Method of and Means for Applying Letters, Numerals, Designs and the like to Glass and other Surfaces.
Inventor: GUNNILL ERNEST
IPC: G09F7/16
Filed: 1917-11-05
Abstract: 121,149. Gunnill, E. Nov. 5, 1917. Labelling and stamp-applying.-To enable paper and like letters, numerals, designs, &c. to be affixed to shop windows, signboards, and other surfaces for advertising and other purposes, or to enable stamps or labels to be affixed, a separate pile A is made of each letter, numeral, &c., and each pile is held together by means of a thin coating a<1> of paraffin wax or other readily fracturable material, which allows the end unit of the pile, when its adhesive surface is wetted and pressed upon the surface to which it is to be affixed, to be separated by merely lifting the pile. A coat of collodion may be applied to the wax coating. To enable the piles to be manipulated they are glued to handles B, which may be provided with interlocking joints b<2>, b<3> to enable words to be set up and all the letters thereof to be affixed in one operation. To facilitate forming signs, templets C, Fig. 6, may be secured to the surface by means of rubber suction disks C<1>.
Patent GB-259518-A (GB)
Title: Improvements in umbrella construction
IPC: A45B25/02
Filed: 1926-06-26
Abstract: 259,518. Evans, S. W., Evans, W. S., and Evans, M. E., (trading as Evans & Son, S. W.). Feb. 2, 1926, [Convention date]. Stretchers comprise inverted members 9 of U-section the ends being formed by revers. ing the channel formation before bringing the sides together to form the pivotal connections 15 with the ribs 6 and runner respectively. By these means smooth parts 16, 17 of the stretcher are formed which prevent injury to the cover when the umbrella is' closed, and to the fingers when the runner is grasped.
Patent GB-722256-A (GB)
Title: Preparation of symmetrical triamino-benzene compounds
Inventor: KRUEGER JOHN
Filed: 1951-07-09
Abstract: Salts of symmetrical triaminobenzene compounds are obtained by treating a symmetrical trinitrobenzene compound with a defined excess of the stoichiometric amounts necessary for reduction, of iron particles and a strong mineral acid, which is non-oxidizing, the iron being converted wholly to ferrous salts.  The "free acid" must be maintained about 3 gms. or more per 100 c.c.  The amine salts are salted out by means of the ferrous salts. Examples are given of the preparations of symmetrical triaminobenzene hydrochlorides, sulphate and base, triaminotoluene hydrochlorides and base, and triaminophenol hydrochloride, by reduction of the corresponding trinitro compounds and in some cases the carboxylic acids thereof, using the considerable excess of acid and iron defined.  Specifications 137,529, 166,934, [both in Class 2 (iii)], and 693,752 are referred to.
Patent GB-882658-A (GB)
Title: Improvements relating to apparatus for manufacturing profiled metal sheet and strip
IPC: B21D5/06
Filed: 1959-05-12
Abstract: 882,658. Drawing; corrugating. ALUMINIUM-INDUSTRIE A.G. May 12, 1959 [May 12, 1958 ; Oct. 21, 1958], No. 16260/59. Class 83 (4). A method of longitudinally corrugating sheet or strip comprises drawing it through a plurality of drawing dies arranged one after another and having die openings of corrugated or wavy form, the corrugations in each drawing die being successively more pronounced in that the height of the corrugations is greater and the width of the corrugations in each die is smaller than in the preceding die, the width of the sheet or strip gradually decreasing as the corrugations become more pronounced. Metal strip is gripped between eccentrically mounted discs 24, 25 on shafts 26, 27 on carriage 19 moved by pinions 21 engaging rails 22 to pull the strip from a supply roller 6 in an oil bath 8 over oil stripping and distributing rollers 10 and an adjustable strip guide 11 and through a succession of corrugating dies 12-17. The upper part 32, Fig. 5, of each die may be swung upwardly and is a positioned on stops 34, 35 while the lower part 33 is moved up or down by an hydraulic ram 36a. The gap between the upper and lower parts of the dies is more pronouncedly corrugated from the die 12 to the die 17. The top part 17a of the die 17 may be movable horizontally to assist in forming undercut corrugations. The corrugated strip is delivered on to arms 45, Fig. 7, swung into supporting position by linkages 43 operated by hydraulic pistons 42. In a modification, Figs. 9, 10, strip 52 from an oil bath 53 is drawn between a guide 60 which centres the strip and distributes the lubricant, through corrugating dies 56 through a die 61, similar to that of the last die 56, and between strips of felt 62, to remove the lubricant, by a carriage 54 pulled by a cable 58, wound on to a drum 59. Each die comprises, Fig. 10, upper and lower die members 66 of steel or having a central part of wood or plastic, the upper member being supported on a pivotable and counterweighted cross member 64. Means for trimming the edges of the strip may be provided at the sides of the dies. The die members may each consist of adjustable sections. The last two drawing dies may be movable up or down out of the horizontal plane of the other dies and may be concave or convex. Strip of artificial material may be corrugated. The strip may be heated between the dies which may be vibrated. The strip may be coloured while being drawn through the dies.
Patent GB-1373067-A (GB)
Title: Well logging apparatus and method
IPC: G01V3/32
Filed: 1972-04-07
Abstract: 1373067 Nuclear magnetic resonance borehole logging CHEVRON RESEARCH CO 7 April 1972 [9 April 1971] 16267/72 Heading G1N In free precession nuclear magnetic resonance borehole logging; using a sonde having crossed polarizing and pick-up coils in a slanted borehole in which the Earth's magnetic field is substantially perpendicular to the borehole axis, the free precession signal is strengthened by applying a weak direct current to the pick-up coil during the exponential collapse of a relatively strong polarizing field generated by the polarizing coil, to slowly rotate the polarization to a more favourable direction before precession about the Earth's field. In Fig.5, relays 36a, 36b, 36c, 37a, 37b and 37c are actuated cyclically by a programmed controller (not shown). First, relay 36a is closed to energize the polarizing coil 13 to generate a relatively strong polarizing field Hp. Relay 37a is then closed to energize the receiving coil 14 to generate a field HI stronger than the Earth's field but weaker than Hp, Relay 36a is then deenergized and relays 36b and 36c simultaneously closed to establish an R-L circuit so that Hp collapses exponentially and the resultant of Hp and H I  rotates slowly compared with the Larmor frequency of protons in H I . Relay 37a is then de-energized and relays 37b energized to damp out switching transients. The relay 37b is deenergized and relay 37c energized to connect the receiving coil 14 to the recorder. 41 denotes a thyrite resistor. A slightly modified circuit is described with reference to Fig.6 (not shown). Structural details of a sonde including elongated polarizing and receiving coils are described with reference to Figs.7A, 7B and 7C (not shown). The polarizing coil extends beyond the receiving coil in the direction of logging so to produce polarization in formations before they are reached by the pick-up coil, thereby increasing the logging rate. The coils have non-magnetic cores. Interstices are filled with thermoplastic polymer filler.
Patent GB-889826-A (GB)
Title: Improvements relating to lasts
Inventor: HOLLEY FRANK HARRY
IPC: A43D3/02
Filed: 1958-05-21
Abstract: 889,826. Lasts. STRODE COMPONENTS Ltd. April 29, 1959 [May 21, 1958; March 24, 1959], Nos. 16293/58 and 10119/59. Drawings to Specification. Class 17(1) The subject matter of this Specification is substantially the same as that described in Specification 889,838, but the claims are concerned with lasts incorporating the hinge plates claimed in Specification 889,838 so that the heel part of the last pivots relatively to the forepart about a centre located outside the last.
Patent GB-349775-A (GB)
Title: Propeller for submerging and steering subaqueous and floating vessels
IPC: B63G8/16
Filed: 1930-05-28
Abstract: 349,775. Vibrating fin propellers. ANTONI, U., 7, Via Francesco Carrara, Viareggio, Italy. May 28, 1930, No. 16429. Convention date, May 28, 1929. [Class 114.] Vibrating plate propellers for manoeuvring submarines and other floating vessels comprise a rigid plate or fin a of tapered thickness supported on a baseplate d by flexible arms b which taper in breadth from the axis m to the fin and are parallel as regards thickness. The axis is adapted to be rotated through an angle to new mean positions for manoeuvring purposes.
Patent GB-314794-A (GB)
Title: Improved machine for sharpening razors, lances and the like
IPC: B24D15/08
Filed: 1929-05-28
Abstract: 314,794. Sneddon, J. July 2, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Stropping-apparatus ; cutting-edges, shaping and treating. - A machine for sharpening razors, lances, &c. consists of a base 1 provided with brackets 3, 4 having therein holes of elongated O-form to carry the spindles 7, 8 of abrasive rollers 5, 6, the rollers being pressed together by springs 9, 10, carried by sleeves 11 - - 14 on the spindles. The rollers are driven, through gearing 19 - - 24, by a handle 25. The razor blade is supported, with its edge between the rollers, by guides 17, 18 formed on the edge of plates 15, 16, and the top of the bracket 4 may be shaped to accommodate the blade and to limit lateral movement thereof.
Patent GB-767401-A (GB)
Title: Improvements in or relating to an adjustable wrench
IPC: B25B13/46
Filed: 1953-06-16
Abstract: 767,401. Wrenches. MAYER, E. June 16, 1953 [June 16, 1952; March 3, 1953], No. 16550/53. Class 61  An adjustable wrench comprises a head which carries a fixed jaw and a jaw which is movable in relation thereto by means of a lever pivoted in the wrench head, the movable jaw having a guide, tongue extending longitudinally into the wrench head, and wherein a part of the wrench is arranged to subjected to spring actions which operate in opposed directions so that longitudinally opposed spring loads are exerted on the guide tongue. As shown in Fig. 4, the movable jaw 3 is provided with a guide tongue 3<SP>1</SP> which extends into the cylindrical guide-way 4 of the spanner head 1. Cylindrical spiral springs 5, 6 are disposed at both sides of the guide tongue. A lever 8 pivoted at 9 to the head of the wrench has a bifurcated end 8<SP>1</SP> which engages with a tooth 3<SP>11</SP> on the guide tongue of the movable jaw. In a modification, Fig. 5, a worm 12 is rotatably mounted in the head on the shaft 11, the worm engaging a rack 13 cut in the guiding tongue 3' and the worm being longitudinally movable on the shaft 11. A sleeve 16 slidably mounted on the shaft 11 adjacent the worm is engaged by a tooth 17 on the lever 8. The worm and sleeve are disposed between spiral pressure springs 5, 6 which surround the worm shaft and bear against the head of the wrench. In another modification, Fig. 8 the circular disc-shaped head 19 of the pivoted lever 8 engages a circular cutout 20 in the guide tongue 3<SP>1</SP>. A locking lever 22 pivoted at 23 in a recess in the fixed jaw 2 has a locking pin 25 which engages a rack provided on the guide tongue 3<SP>1</SP> on the movable jaw. The lever is spring loaded on each side by springs 26, 27 respectively. In another modification, Fig. 13, a leaf spring 22<SP>1</SP> is clamped to the fixed jaw 2 and engages a rack 31 on the tongue of the movable jaw which is thereby subjected to spring actions in opposite directions depending on the direction of displacement of the guide tongue from its normal position. Any of the spring actions may be provided by a resilient mass of rubber or the like.
Patent GB-555473-A (GB)
Title: Improvements relating to the connection of electrical networks
IPC: H02J3/34
Filed: 1942-11-24
Abstract: 555,473. Multiplex systems. SIEMENS BROS. & CO., Ltd., and MOSS, S. H. Nov. 24, 1942, No. 16607. [Class 40 (iv)] [Also in Group XL] Arrangements for the connection of a common circuit to a number of networks such as the filters of a multi-channel system employing an impedance of a certain value associated with each network, the impedance of all the networks being connected or coupled together, as described in Specification 552,163, are modified to meet the case in which the networks are asymmetrically connected, that is to say, the insertion loss is not necessarily the same for each network. The problem is discussed mathematically and several embodiments are described which are generally similar to those of the prior Specification. A simplified arrangement for two networks, Fig. 7, which is useful when one of two channels requires a very close coupling, employs a single impedance Z12 connected between the junction point of the secondary windings of transformer T and that of the primary windings of transformers T1, T2, the value of the impedance and the transformer ratios being interrelated.
Patent GB-691285-A (GB)
Title: Portable rubbing machine
IPC: B24B23/04
Filed: 1951-07-13
Abstract: 691,285. Rubbing machines. SYMONS, P. E. July 13, 1951, No. 16702/51. Class 60. [Also in Group XXVI] A portable rubbing machine has a single rubbing shoe actuated by a pneumatic opposed piston type motor, the pistons being mechanically interconnected to permit both pistons simultaneously to transmit mechanical pressure in the same direction to the rubbing shoe, one piston being attached to move in fixed relation with the rubbing shoe and the combined mass of the other piston and the parts attached to move in fixed relation therewith being adapted to promote dynamic balance of the combined mass of the rubbing shoe and parts attached to move in fixed relation therewith. The body 1 comprises a cylinder 12 in which reciprocate opposed pistons 37, 38; the piston 37, which is hollow, is connected by driving post 49 to a slide 87 and the piston 38, which is solid, is connected by driving post 50 to a slide 88. A shoe supporting plate 6 is secured by countersunk screws to the slide 87 and to an auxiliary slide 89; to minimise weight the slide 87 has a cut-away portion 124 and the auxiliary slide 89 has circular holes 125, 126 formed therein; a pad 8 of rubber or felt is secured to the slide plate 6 and sheet material 9 such as sand paper is removably secured on the shoe by manually releasable clips 10. Parallel arms 92, 93 projecting from adjacent ends of the slides 87, 88 have projections 96, 97 fitting correspondingly shaped slots 98, 99 in a disc 100 secured to one end of an oscillator shaft 101 journaled in a sleeve bearing 31 extending across the mid-portion of the cylinder 12. The other end of shaft 101 operates an oscillating distributing valve in a valve cavity 27 above the cylinder. In a modification, Fig. 13, toothed rack extensions 142, 143 of the slides 87, 88 engage a pinion 144 on the oscillator shaft 101. The supply of compressed air to the motor is controlled by a valve 64, Fig. 6, normally closed by a spring 65 and opened by a manually operated actuator 3 comprising a shell 69 having an exposed wall 69a and side walls 70 which extend into aligned recesses 4, 59 in the tool body. A leaf 71 adapted to press against the lower surfaces of the side walls 70 of the actuator has a curved portion 72 engaging a cross pin 73 so as to support the actuator for limited rocking movement within the recess. The free end of the leaf engages the projecting end of valve stem 68. To lock the actuator in the depressed position, the part 69 is slidable relatively to the leaf 71 to bring a cross pin 75 into locking notches 74a of bayonet slots 74 provided in the side walls; by providing multiple bayonet slots the actuator may be held in either a depressed or partially depressed position, the latter corresponding to a slower rate of operation.