baber/WOPTO huggingface dataset:
Patent GB-1435064-A (GB)
Title: Rotor for a miniature or small-size electric motor
IPC: G04C3/16
Filed: 1974-08-20
Abstract: 1435064 Electric motors DIEHL 20 Aug 1974 [25 Aug 1973] 36542/74 Heading H2A An annular permanent magnet rotor 1 for a small electric motor is radially magnetized at its outer periphery to produce north and south poles and is axially magnetized adjacent its inner periphery, the axial magnetization being located on one axial side of the rotor and being non-uniformly spaced about the rotor axis so that, in use, unbalanced axial forces are exerted on the rotor causing the rotor to tilt. The tilting of the rotor is intended to reduce motor noise by compensating for any play between the rotor and a stationary shaft 5 and between the shaft and the bearings, where the rotor is fixed to the shaft. The rotor shown has a north pole 13 adjacent its inner periphery 2, and an adjacent south pole 14, Fig. 2 (not shown). The magnetic circuit for the poles 13, 14 is completed by a soft iron ring 6 which, in the embodiment shown, is a part of the motor stator carrying pole teeth 7.
Patent GB-930422-A (GB)
Title: Process of the encapsulation of particulate material
IPC: B01J2/00
Filed: 1959-10-28
Abstract: Capsules formed by coating particulate materials with a substance comprising a gelable hydrophilic colloid by a process involving liquid-liquid phase separation are rendered less permeable by spray drying a dispersion of the coated material in a liquid having a pH between 4 and 6.  The coating material may be a single gelable colloid, e.g. gelatine or it may additionally comprise other colloid material, e.g. partially or completely hydrolysed styrenemaleic anhydride copolymer, gum acacia, sodium alginate, sodium carboxymethyl cellulose or carbohydrate acetate phthalates.  The particulate material may be a lipophilic solid, an oil, or an oil-in-hydrophilic liquid or hydrophilic liquid-in-oil emulsion. Prior to spray drying, the capsules may be hardened, e.g. by treatment with formaldehyde, a dicarbonyl compound, tannic acid or an alum.  Specific examples refer to the spray-drying of capsules including those containing: (a) an aqueous suspension of caffeine-in-mineral oil emulsion (sustained action oral stimulant), (b) aqueous sulphanilamide solution-in-lanolin emulsion (ointment ingredient); (c) particles of mercuric oxide coated with glyceryl mono-stearate (veterinary anthelmintic), and (d) aqueous chloral hydrate-in-mineral oil (sustained action sedative).  Specifications 751,600, 911,483, 929,402, 929,404, 929,405, 929,406, 929,407, 929,408 and 929,409 are referred to.
Patent GB-302287-A (GB)
Title: Speed changing gear
IPC: F16H3/66
Filed: 1928-12-12
Abstract: 302,287. Jeunehomme, D. Dec. 13, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Variable - speed gearing comprises arrangements of nested planetary spur gearing for driving a shaft E on a drum A from a shaft D at different speeds in both directions. Planet gears li, L fast on a shaft J carried by loose discs I, I<1> mesh respectively with an internal gear G fast on the shaft E and with gears H, M, the former fast to drum A and the latter fast to shaft D. A driving crank is shown at N. By multiplying the pair KG, the pair LH and the pair ML, and bringing resulting trains into operation alternatively, different speed combinations forward and reverse are obtainable. This might be effected by sliding the planet shafts j.
Patent GB-330911-A (GB)
Title: Improvement in insecticides
Filed: 1928-12-13
Abstract: 330,911. Marks, Sir G. C., (Rohm & Haas Co.). Dec. 13, 1928. Insecticides.-Insecticides comprise monochloracetyl compounds having a vapour pressure lower than that of butyl monochloracetate, dissolved or dispersed in liquids at dilutions ranging from about 1/75 to ¢ gram-molecule per litre. Monochloracetyl derivatives of alcohols higher than butyl may be used, but it is preferred to employ compounds containing more than one toxic group, for example, those containing additional chlorine atoms or nitrogen atoms. Suitable diluent liquids are hydrocarbon oils or water. Examples of suitable monochloracetyl compounds are sodium monochloracetate, chloracetamide, glyceryl trimonochloracetate, dichlor- #-chloracetophenone, nitrophenyl-chloromethylketone. cyclohexanol monochloracetate, ethyleneglycol dimonochloracetate, trimethyleneglycol dimonochloracetate, and dichlorisopropyl monodichloracetate. Examples of suitable compositions are given.
Patent GB-310499-A (GB)
Title: Improvement in valve for rock drills
IPC: B25D9/24
Filed: 1928-12-13
Abstract: 310,499. Ingersoll-Rand Co., (Assignees of Slater, F. M.). April 27, 1928, [Convention date]. Percussive drills.- The distributing- valve f of a percussive drill is housed in a chamber z formed between a cylinder end washer H and a plate W which forms a seat for the head L of the rifle bar. The valve which surrounds the bar, is rotated by a ratchet P, has opposed flat surfaces p, o and tapered ends, and is reversible end for end and upside down. It engages raised seats x, y around the inlet passages c, d, and its flat sides are slightly reduced to provide clearance for the supply fluid. The pointsu, v of the valve act as fulcra upon which it turns to effect the distribution and it is reversed by the compression when the piston C passes the exhaust port D and by the suction created by the passage of the supply fluid over its edge. A hollow throttle valve S with a port T is arranged in the back head R.
Patent GB-1248668-A (GB)
Title: D.c. voltage regulator
Inventor: HOWLETT DONALD LANE
IPC: G05F1/56
Filed: 1969-07-23
Abstract: 1,248,668. Automatic voltage regulation. TEXACO DEVELOPMENT CORP. July 23, 1969, No.36933/69. Heading G3X. A D.C. voltage V 2  is maintained constant irrespective of variations of input voltage and/or load and/or temperature by the circuit shown, which comprises two operational amplifiers 10, 12 respectively receiving the input voltage and providing the output voltage V 2  , and four feedback loops consisting of a Zener diode 16 in parallel with the amplifier 10, fixed and variable resistors 32, 34 in parallel with the amplifier 12, a resistor 52 connected between the output of amplifier 12 and the input of amplifier 10 and a resistor 22 also connected between this output and input. The circuit parameters are chosen so that the overall gain of the cascaded amplifiers 10, 12 is approximately unity whilst the Zener current is maintained to provide a stable voltage for reducing the effect of the offset voltages of the amplifiers, of which the amplifier 12 is preferably transistorized to improve temperature stability. Since the regulator has two stable states, a resistor 30 is provided to ensure stabilization in the correct state when power is first turned on. A discussion is given of the choice of the various circuit components, of the adjustment of certain of them and of the mathematical basis of the circuit operation.
Patent GB-1020138-A (GB)
Title: Money handling devices
IPC: G07F5/20
Filed: 1962-10-22
Abstract: 1,020,138. Coin-freed mechanisms. NATIONAL REJECTORS Inc. Oct. 22, 1962 [Oct. 26, 1961], No. 36946/64. Divided out of 975,744. Heading G4V. The description is taken from that of Specification 975,744 and the claims differ in that they do not refer to the transfer plate.
Patent GB-1075089-A (GB)
Title: Improvements in and relating to shaving heads for dry-shaving apparatus
IPC: B26B19/14
Filed: 1964-09-10
Abstract: 1,075,089. Dry shavers. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 10, 1964 [Sept. 13, 1963], No. 37061/64. Heading B4B. In a shaving head for a dry shaver comprising a shear plate 1 and a cutter 2 which are together depressible against spring pressure into a terminal position determined by a stop, the spring pressure is provided by springs 9, 10 of unequal strengths. The springs bear against opposite sides of the bottom 14 of a cup 15 engageable with a pivot 16 after a given compression of the spring 9. The cutter 2 is driven from a spindle 13, mounted on a shaft 17, through a coupling 3, the cup 15 being engageable with a collar 19 under the pressure of the spring 10. When the plate 1 is pressed lightly against the user's skin, the plate moves inwardly and the spring 9 is compressed, the spring 10 remaining extended. When the plate is pressed more heavily against the user's skin, the cup 15 comes into contact with the pivot 16 and the spring 9 ceases to be effective. As the pressure of the plate is increased, the coupling 3 slides past the cup 15 and the spring 10 is compressed. The compression of spring 10 can be continued until the lower edge of the plate 1 comes into contact with a fixed stop 21 of the shaver housing.
Patent GB-775269-A (GB)
Title: Improvements in or relating to electromagnetic contactors
IPC: H01H50/32
Filed: 1955-12-28
Abstract: 775,269. Electromagnetic switches. VAPOR HEATING CORPORATION. Dec. 28, 1955 [Jan. 7, 1955], No. 37149/55. Class 38(5)  An armature 18 carrying spring-loaded bridging contacts 50, 55 at its ends and pivoted on a magnetic support 16 upstanding from a magnetic base plate 13 is held in the position shown by a permanent magnet 25, the contact 50 bridging a pair of fixed contacts (Fig. 2, not shown), whereby the contact spring 56 is compressed. To open contact 50 and close contact 55 a coil 32 surrounding a core 30 is energized with current having.a polarity such that the flux therefrom opposes that due to the magnet 25 in the support 16 whereupon the magnet 25 releases the armature which is moved by the spring 56 into the field of the core 30. The contact spring 57 is compressed upon closure of contact 55 and serves to restore the armature upon de-energization of the coil 32.
Patent GB-1084906-A (GB)
Title: Boring or tunnelling apparatus
IPC: E21D9/087
Filed: 1964-09-11
Abstract: 1,084,906. Tunnelling machines. SMITH INDUSTRIES INTERNATIONAL Inc. Sept. 11, 1964 [Sept. 13, 1963], No. 37219/64. Heading E1F. The boring means of a shield type tunnelling machine consists of two or more cutter heads that are oscillated by means within the shield about the axis of the projected tunnel being formed by the machine. In one of the two embodiments described in detail the heads conform to quadrants of the conical end surface of the tunnel formed thereby and the quadrants are each oscillated through 90‹ about a common axis by pairs of hydraulic rams associated with each quadrant. In the other embodiment the heads are arranged in a concentric association.
Patent GB-880733-A (GB)
Title: Interlocked trigger and reversing electric switches
IPC: H01H9/06
Filed: 1959-11-03
Abstract: 880,733. Retractive switches; mechanical switches without quick action; latching and unlatching switches. ARROW ELECTRIC SWITCHES Ltd. Nov. 3, 1959 [Nov. 7, 1958], No. 37227/59. Class 38 (5). A combination of an on-off control switch with a reversing switch, for mounting in a portable tool for example, is arranged so that the reversing switch is latched in each of its positions and can only be operated when the control switch is off. A retractive trigger 12 carries a sheet metal actuating member 18 coupled by an over-centre spring 78 to a yoke 80 pivoted at 81 and mechanically interconnecting two insulating plates 74, 74<SP>1</SP> which carry metal pieces 72, 72<SP>1</SP> for bridging contacts 69, 39 and 69<SP>1</SP>, 39<SP>1</SP> respectively, with a snapaction. The reversing switch comprises a slidable thumb-piece 56 carrying two spring- loaded balls 40, 41 which respectively interconnect terminal strips 20, 201 with crossedover strips 32, 32<SP>1</SP> continuous with switch contacts 39, 39<SP>1</SP>. A hump 46 of insulation is seated on the cross-over point of strips 32, 32<SP>1</SP>. Secured to thumb-piece 56 is a springy strip 90 having ears 94 which latch in recesses 16a or 16b in a cover 16 and prevent operation of the thumb-piece. A finger 18i is provided on the actuating member 18 of the control switch and in the off position of this switch (Fig. 5, not shown), the finger 18i lifts the strip 90 such that ears 94 rise above the cover 16 and the thumb-piece 56 is free to be moved.
Patent GB-1200076-A (GB)
Title: Improvements in or relating to electrical connectors
IPC: H01R13/426
Filed: 1967-08-14
Abstract: 1,200,076. Two-part couplings. PYLENATIONAL CO. 14 Aug., 1967 [3 March, 1967], No. 37295/67. Heading H2E. A contact-retaining spring collet 26 comprises a rear sleeve 28 and forwardly-projecting fingers, e.g. 32, each finger having an axiallyextending rear post 38, an inwardly-inclined part 39 and an end portion 40 with a shoulder 49 which snap-fits behind a complementary shoulder on a contact 21 inserted from the rear of the collet. Forward movement of the contact 21 is prevented by engagement of its lead wire (not shown) with rear face 12 of connector body 10. Annular flanges 55, 30 on the collet engage a ridge in the body 10, the rearward flange being formed on the sleeve 28 (as shown) or, alternatively (Fig. 9, not shown) on the axially-extending parts (138) of the collet fingers.
Patent GB-800253-A (GB)
Title: Improvements in or relating to the application of jointing material to spigot and socket piping
Inventor: BOOTH JOHN FREDERICK
IPC: B29C70/76
Filed: 1955-12-30
Abstract: 800,253. Lining pipe sockets &c. HEPWORTH IRON CO., Ltd. Sept. 6, 1956 [Dec. 30, 1955], No. 37367/55. Class 87(2). A mould 6 for the reception of jointing compound when applied to the spigot end of a spigot-and-socket pipe 1 is provided with a concentric pilot 22 adapted to enter the bore of the pipe, the pilot having radial plungers 26 with rounded protruding outer ends 27 and tapered inner ends 30, together with a plunger 32 coaxial with the pilot and having a tapered end 31 of angle complementary to the angle of the tapered ends of the other plungers, a spring 34 urging this plunger axially into contact with the other plungers. The pilot comprises a short cylindrical block 23 and a long cylindrical boss 24 screwed on a spindle 9 rotatable in a block 11. The block 11 has lugs 12 by which it may be bolted to a chain conveyer and a sprocket 14 on the end of the spindle 9 enables the mould 6 and pipe 1 to be rotated. The plunger 32 has a bore in which the spring 34 is housed and the block 23 has three radial bores 25 for the plungers 26, the ends of which protrude through a sleeve 29, encircling the block 23 and welded to a cover plate 37, with shoulders 40 engaging the inside of the sleeve whereby their rounded ends 27 cannot lie outside a circumference of diameter slightly greater than the nominal bore of the pipe 1. The included angle of taper for the ends of the plungers is 90 degrees with the result that centring of the pilot 22 can only result from radial movement of all the plungers 26, which can accommodate themselves to slight variations in the shape of the bore. A core 16, hollow for lightness and provided with a hook 21, is lowered into the socket end of the pipe and centred by a similar pilot 22A. At some point in the path of the chain conveyer the mould and pipe are rotated and jointing compound 42 is supplied from spouts 43 into the annular spaces between the mould and core and the pipe. The invention may be applied to multi-bore pipes.
Patent GB-1121903-A (GB)
Title: Apparatus for testing tubes or rods by ultrasonics
Inventor: CHATTAWAY MAURICE DAVID
IPC: G01N29/26
Filed: 1964-09-14
Abstract: 1,121,903. Ultrasonic inspection devices. S.T.D. SERVICES Ltd. 13 Sept., 1965 [14 Sept., 1964], No. 37457/64. Heading H4D. In an ultrasonic pulse-echo system for detecting flaws in rods or tubes, angular adjustment of the or each transducer relative to the surface of the workpiece permits adjustment of the angle of incidence of the ultrasonic energy at workpieces of different diameter to the requisite angle. In the embodiment of Fig... 1, crystal transducers 24 to 27 are mounted axially in tubes 20 to 23 rotatable in and removable from bores in a rotor assembly 14, 16, 17, 18, 19. The rotor assembly is supported on bearings 12, 13 within a housing 10 and is driven by a V-belt on a pulley section 15. Rod or tube workpieces are positioned in an axial passage of the rotor assembly by guide members 71 and by seals 66 which allow relative longitudinal movement of the workpiece and the testing apparatus and which retain water (acting as a coupling medium) within the rotor passage and bores. Transducers 24 and 25 act as transmitters and are inductively coupled to a pulse generator by coils 31 on tubes 20, 23, by coils 39, 47 on the rotor, and by coil 50 on the housing 10. Transducers 26, 27 act as receivers and are inductively coupled to flawindicating or recording instruments by respective coils on tubes 21, 22, by coils on the rotor, and by coils on the housing 10. Individual angular adjustment of tubes 20 to 23 within the bores is possible, and the adjustments may be made simultaneously by means of a linkage 53, 54 and threaded adjuster (58-62), (Fig. 2). Seals 66 and guide members 71 may be changed to accommodate workpieces of different diameter.
Patent GB-1532837-A (GB)
Title: Apparatus for use in measuring differential fluid pressures
IPC: G01L13/02
Filed: 1976-09-09
Abstract: 1532837 Measuring pressure FUJI ELECTRIC CO Ltd 9 Sept 1976 [9 Sept 1975] 37520/76 Heading G1L In a differential pressure sensor an auxiliary diaphragm 71 is arranged in parallel with the measuring diaphragm 61 to prevent damage to the latter due to excess pressure. The pressures are applied through inlets 45, 46 to insulating diaphragms 54, 55 and are communicated to the respective sides of diaphragms 61, 71 via passages 58, 59, 65, 75, 77, 78 and annular spaces 80, 81. The flexibility of diaphragms 61, 71 and the sizes of the chambers on each side of the diaphragms are such that when excess pressure occurs and diaphragm 54 or 55 is deflected towards or reaches the wall of the casing 50, 51 the auxiliary diaphragm deflects sufficiently to absorb enough expelled fluid to prevent damage to the measuring diaphragm This diaphragm is of metal and its displacement is measured using induction coils or metal foils on the adjacent chamber walls. In the latter case capacity changes are measured
Patent GB-523173-A (GB)
Title: Improvements relating to the construction and mounting of instruments for demonstration and instructional purposes
IPC: G09B23/00
Filed: 1938-12-28
Abstract: 523,173. Models. HARRIS & CO. (1913), Ltd., P., and WATSON, A. Dec. 28, 1938, No. 37574. [Class 146 (ii)] A demonstration or instructional model comprises a stand a, support c, and a universal joint e carrying a representation k of the machine, such as an aeroplane, or appliance on which the instrument n is to be used. The joint has a lock ring i securing the ball against one or more leather washers or cups. The blank k may be secured between the socket h and the instrument n, and the socket may have a lip to accurately locate the blank. The casing of a sealed instrument may have windows to observe the operation of the instrument.
Patent GB-1407431-A (GB)
Title: Electric motor
IPC: B41J23/32
Filed: 1972-08-11
Abstract: 1407431 Electric motors with permanent magnet rotors PAPST-MOTOREN KG 11 Aug 1972 [1 Sept 1971] 37589/72 Heading H2A In an electric motor suitable for a record player or tape recorder, the rotor 54 comprises a ceramic magnetic ring 44 which is alternately polarised in opposite axial directions around its periphery, as in Fig 1, and the disc shaped stator 55 comprises a two layer arrangement of planar coils, one layer being as in Fig. 2. The rotor also comprises a field return plate 43 and a yoke plate 49 which is attracted by ring 44 into contact with a shoulder 48 of a member 42, the latter having bores 47 for use in rotor balancing, and the rotating assembly is supported with the rounded portion 24 of the lower end of the central spindle 23 resting on an adjustable plastics plate 28 (a screwthread arrangement is described with reference to Fig. 1a, (not shown). An output gear 34 on the spindle 23 is mounted in a housing part 17. The stator coils 60<SP>1</SP>, 60<SP>111</SP> etc. are wound around triangular structures 59<SP>1</SP>, 59<SP>111</SP> etc. which are positioned in one of two planes relative to a plastics base, and the two layers of coils are energised in phase quadrative in order to produce the required rotating field; the series-connection of the coils in each layer, and the winding of a second wire 125 in each layer to provide means to control the motor, is as in Fig. 9, (not shown). The method of controlling, (not detailed) makes use of Hall generators such as 79, Fig. 2.
Patent GB-1380702-A (GB)
Title: Apparatus for determining the processing characteristics of plastic type materials
IPC: B29B7/28
Filed: 1971-08-11
Abstract: 1380702 Compression mixers RUBBER & PLASTICS RESEARCH ASSOCIATION OF GREAT BRITAIN 10 Aug 1972 [11 Aug 1971] 37654/71 Heading B1C [Also in Division G1] The characteristics of a plastic material during a mixing process are established from measurements of the temperature of the material and the torque applied to the mixing rotors. The material is fed into a chute 70 (Fig. 3) leading through a passage 68 (Fig. 2) to a mixing chamber 10 formed between two valves 36, 38 of the housing, the latter being hinged at 40 in a slot 50, whereby part 38 can be drawn forward and swung down to allow cleaning. The two halves are normally clamped together by hand wheels 42, 44 (Fig. 4) of heat insulating material. Mixing chamber 10 is surrounded by a chamber 61, formed in part 38, which contains oil at a controlled temperature. The material is pushed into the mixing chamber by a plunger 72 attached to a pneumatic piston. Mixing is effected by two rotors 52, 54 driven in opposite directions at different speeds, each rotor having a circular flange 82 to prevent leakage of material into the drive mechanism.  The assembly constitutes a miniature Banbury mixer.
Patent GB-983819-A (GB)
Title: Inflatable faltboat
IPC: B63B7/08
Filed: 1962-10-05
Abstract: 983,819. Inflatable craft. M. GARRETTI. Oct. 5, 1962 [Oct. 5, 1961], No. 37695/62. Heading B7A. An inflatable falt boat comprising an inflatable body 1 integral with a transom 2 has two detachable folding reinforcements 3-4 (Figs. 3 and 5) and 2<SP>1</SP>-2<SP>11</SP> (Fig. 7) for stiffening the bow and stern respectively. Said reinforcements are held in place by an assembly of levers and plungers 25-29 (shown being moved to the operative position in Fig. 9).
Patent GB-1017834-A (GB)
Title: Improvements in or relating to electric motors
IPC: H02K17/06
Filed: 1962-10-05
Abstract: 1,017,834. Control of A.C. motors. HOBART MANUFACTURING CO. Oct. 5,1962 [Oct. 6, 1961], No. 37770/62. Heading H2J. A split-phase motor driving a food-mixing machine is started by actuating switch 30 to complete the circuits to main windings T 1 -T 2 , T 3 -T 4 , and starting windings T 5 -T 6 , T 7 -T 8 , through normally-closed contacts of relays R 1 , R 2 . The windings T 1 -T 2  are connected across lines L 1 , L 2 , through contacts R1D, whilst windings T 3 , T 4  are connected across the supplylines through contacts R2C, R2D, and R1D. The starting winding circuit is connected across the supply-lines through contacts R1C, R2C, and comprises the windings T 5 -T 6 , T 7 -T 8 , in series, capacitor 28, and contacts K 2  of a motor-driven centrifugal switch. When the motor reaches a predetermined speed, the contacts K 2  open, and, at the same time, centrifugal contacts K 5  open and contacts KH close. Low-speed operation of the motor is afforded by manual switch 35 which is only closed under maintained pressure by the operator. The relays R 1 , R 2 , are energized, through switch 35 and contacts K 4 , whereby the pole-number of the motor windings is increased. The starting windings are now in parallel with each other, and are in turn connected in series with the parallel-connected main windings of the motor. The low-speed motor circuit is completed when the rotor decelerates to re-close contacts K 5 , the contacts K 4  being shunted by relay contacts R 2 E. The contacts K 2  and capacitor 28 are not included in the low-speed circuit.