baber/WOPTO huggingface dataset:
Patent GB-797951-A (GB)
Title: A process for the continuous or discontinuous bleaching of natural or regenerated cellulose fibre and products manufactured therefrom by means of alkali or alkaline earthmetal chlorite solutions
IPC: D06L4/24
Filed: 1955-05-18
Abstract: A process for bleaching natural or regenerated cellulose fibres, such as pulp, cotton, rayon staple, or products manufactured therefrom, comprises steeping the material to be bleached in an activated cold or heated alkali or alkaline earth metal chlorite solution having a pH of less than 7, freeing the material from excess solution, for example by squeezing or pressing, and then treating the material, in the form of a closely packed mass, with steam which is blown through the mass to raise it to a temperature of 95-100 DEG  C., and then maintaining this temperature either by good insulation or by repeated brief blowings of steam for a period of 30-60 minutes after which time the process is completed, either by washing with hot sodium carbonate solution followed by rinsing with water, or simply by rinsing with water.  The process may be performed as either a continuous or discontinuous operation.  In examples, sodium chlorite solution is activated with sodium pyrophosphate and the pH adjusted to 3.8-4.2, for example with acetic acid.  Wetting agents, for example, an alkyl sulphate, may also be present, and the steaming treatment is carried out in a J-box, bleaching tower, or other insulated container.  Specification 608,547 is referred to.
Patent GB-1536733-A (GB)
Title: Transfer carriers and process for dyeing and printing
IPC: D06P5/13
Filed: 1976-04-08
Abstract: 1536733 Transfer printing with azoic dyes SUBLISTATIC HOLDING SA 8 April 1976 [9 April 1975] 14394/76 Heading D1B Transfer carriers are characterised is that they carrying at least one azo dye precursor which is sublimable or vaporisable at a temperature between 120 and 240‹C and of formula D-X or H-A in which D is an aromatic or heteromatic radical of a diazo component preferably free of water-solubilising groups, X is a diazonium group in the form of a salt or a radical known per se to be convertible into a diazonium group and A is the radical of a compound which is capable of coupling. Preferred coupling components are phenols, amines and compounds having activated methylene groups, diazo components D-X may be in the form of anti-diazotate, diazosulphonate, or diazoamino compounds. Natural and synthetic textile substrates may be dyed or printed.
Patent GB-388030-A (GB)
Title: Improvements in and relating to methods of making artificial resins
IPC: C08G12/08
Filed: 1931-05-15
Abstract: A condensation product soluble in an organic solvent and capable of being rendered insoluble and infusible by the addition of heat is prepared by adding formaldehyde to a heated solution of aniline in alcohol acidified with phthalic acid.  The resin which separates out insoluble in benzene, acetone, and benzene-alcohol and the solution may be used for impregnating or otherwise treating filling materials paper, or fabrics.  Known contact substances may be employed.  In an example formaldehyde is added to a heated solution of aniline, phthalic acid and zinc chloride in alcohol.  The resin which separates out is dissolved in a benzene-alcohol mixture and dried with magnesium sulphate.  A filling material such as asbestos, wool-meal, paper, or fabric may be impregnated with the solution. The impregnated materials have electrical insulating properties. Specification 290,327, [Class 2 (iii), Dyes &c.], is referred to.
Patent GB-675967-A (GB)
Title: Improvements in or relating to gear wheels
IPC: F16D3/76
Filed: 1949-05-30
Abstract: 675,967. Universal joints. SILENTBLOC, Ltd., and HUTTON, P. C. May 25, 1950 [May 30, 1949], No. 14433/49. Class 80 (ii). A bevel gear wheel comprises a toothed ring B resiliently connected by rubber or the like to a hub member. A boss A has a rim comprising axial and radial flanges A', A<SP>5</SP>, the flange A<SP>4</SP> having a circumferential.groove A<SP>5</SP>. The ring B is recessed at B<SP>3</SP> and provided with a chamfer or radius B<SP>2</SP>. The annular rubber member C, C' is of L-section and is radially compressed between the ring B and the flange A<SP>4</SP>, the groove A<SP>6</SP> and chamfer B<SP>2</SP> cooperating with the flange A' so the ring B is resiliently keyed against axial displacement on the hub. It is stated in the Provisional Specification that the rubber may have a double convex or a V-section and that the ring and rim may be provided with circumferential grooves. It is also stated that the hub and ring may be formed in two or more annular parts to facilitate assembly.
Patent GB-296463-A (GB)
Title: Improvements in brake mechanism for wheeled vehicles
IPC: F16D51/34
Filed: 1927-05-30
Abstract: 296,463. A. C., (Acedes) Cars, Ltd., and Pitt, H. W. May 30, 1927. Applied by running axle or wheel; blocks and .shoes acting on drums. - In a brake comprising a fixed and a floating pair of expanding shoes separate operating cams and mechanism are provided for each pair of shoes and one of the floating shoes is provided with a slot engaged by an extension of the cam of the fixed shoes, whereby the fixed shoes are operated by the floating shoes and the fixed shoes can be operated without operating the floating shoes. The brake shown comprises a pair of shoes 2, 3 pivoted at 4 upon a plate 7 fixed to the axle casing 8 and adapted to be applied to the drum 1 by a cam 5 also pivoted to the plate 7. A second pair of shoes 10, 11 is pivoted at 12 upon a plate 23 freely mounted upon the axle casing 8 and adapted to be applied by the cam 13 also pivoted on the plate 23. A projection 16 on the cam 5 passes through a slot in the shoe 10. The spindle of the earn 13 has an arm 12 connected to a hand or foot lever and when this is actuated to apply the shoes 10, 11 to the drum, these shoes with the carrier 23 rotate to a limited extent causing the end of the slot in the shoe 10 to exert pressure on the projection 16 of the cam and thus to apply the shoes 2, 3 to the drum. The spindle of the cams may be provided with an arm 9 connected to a hand or foot lever for operating the shoes 2, 3 independently of the shoes 10, 11. The two pairs of shoes instead of being disposed in the same plane as shown may be arranged side by side.
Patent GB-493219-A (GB)
Title: Flexible shaft coupling
IPC: F16D3/28
Filed: 1937-05-26
Abstract: 493,219. Universal joints. HARDY, SPICER, & CO., Ltd., and DANIELL, J. A. May 26, 1937, No. 14575. [Class 80 (ii)] Flat external surfaces 12, of an intermediate coupling- member 11, are engaged by rubber or like flexible pads 13, the outer surfaces of which are engaged by members 16 secured alternately to coupled shaft - members 22. The faces of the pads 13 are provided with cup-shaped pressings, the inner 14 of which have out-turned flanges 15 for locating them on the coupling-member 11, whilst the outer pressings 17 may be welded or otherwise positively secured in openings in the shaft-members 16. Studs 20, Figs. 1 and 2, or bolts 20, Fig. 4, positively secure the shaftmembers 16 to the coupling-member 11 and pass with clearance through the rubber pads and cupped pressings. In Fig. 4, additional outer rubber pads 26 are provided, both pads 13, 26 being located on the shaft-members 16 by out-turned flanges 18 on their cupped pressings 17, 25. In Figs. 1 and 2, the studs 20 act on the outer cupped pressings 17 through spring-washers 19.
Patent GB-529065-A (GB)
Title: Improvements in carriage stop mechanism for typewriting machines
IPC: B41J29/50
Filed: 1939-05-16
Abstract: 529,065. Typewriters. ROYAL TYPEWRITER CO., Inc. May 16, 1939, No. 14578. Convention date, June 3, 1938. [Class 100 (iv)] A carriage-stop mounted on a bar on the carriage and provided with a latch is releasable by means of a member which is normally out of contact with the bar and latch and is adapted, on operation, to release the latch, and then interlock therewith to permit of the carriage being adjusted to set. the stop. In the case of a linelock stop, the means for operating the latchreleasing. member is arranged also to release the line-locking device and thereby permit use of the space-bar for adjusting the carriage. The carriage B of the. machine shown in Figs. 1 and 4 is provided with a rack 25 supporting margin and line-lock stops F<SP>1</SP>, F which are secured by latches 29', 29 and co-operate with a counterstop 16 and a line-locking member 38 pivoted thereon respectively. The machine is now provided in proximity to the typeguide E, with vertically movable fingers 39<SP>1</SP>, 39 which engage guide-screws 40<SP>1</SP>, 40 and have notches 44<SP>1</SP>, 44 for engaging lugs 34<SP>1</SP>, 34 on the latches 29<SP>1</SP>, 29. Margin-setting keys 57', 57 are connected by links 55', 55 to bell-cranks 51<SP>1</SP>, 51 engaging lever 49', 49 which are pivoted to depending parts 45<SP>1</SP>, 45 of the fingers 39<SP>1</SP>, 39. To set the stop F', the carriage is moved to the right until it is arrested by the counterstop 16, the key 57' is operated, and the finger 39 raises the latch 29'. The carriage is then adjusted into the required margin position, the stop F<SP>1</SP> being returned by co-operation of the notch 44<SP>1</SP> and lug 34<SP>1</SP>, and on release of the key, the latch re-engages the rack and secures the stop. The key 57 is operated and the carriage is adjusted in a similar manner to set the stop F. To permit employment of the space-bar for adjusting the carriage, the key 57 is arranged to rock rearwardly the counterstop 16 and thereby render ineffective the line-locking member. For this purpose, the bell-crank 51 is connected to a link 62 having a slot 65 engaging a pin 66 on a rock-arm 67 which is connected by a link 70 to an extension 72 of the counterstop 16. The fingers 39, 39' are formed with inclines 84, 85, 84<SP>1</SP>, 85<SP>1</SP>, for releasing the latches 29, 29<SP>1</SP>, and merely preventing damage if the fingers are raised inadvertently. Instead of the key-buttons 57, 57', the projecting ends of the links 55, 55<SP>1</SP> may be arranged under indicia on the framework. A tabulating-stop 18, connected by a link 20 to the stop 16, is operated by a tabulating-key-lever 73 having a lug 80 which abuts on the rock-arm 67. A rock-arm 81 in the path of the extension 72 releases the carriage. The slot 65 in the link 62 prevents the tabulating-mechanism from being operated by the margin-stop mechanism and vice versa.
Patent GB-450512-A (GB)
Title: Improvements in electric switch apparatus for the automatic control of temperature or fluid pressure
IPC: G05D23/275
Filed: 1934-12-11
Abstract: 450,512. Automatic control systems. JONES, C. E., Victory Works, East Parade, Bradford, Yorkshire. Dec. 11, 1934, No. 14610/36. Divided out of 450,446. Drawings to Specification. [Class 38 (iv)] Temperature; pressure.-The subject-matter described in this Specification is the same as that described in Specification 450,446, but the claims differ. Specifications 344,013 and 344,060, [both in Group XXIX], also are referred to.
Patent GB-1006742-A (GB)
Title: Cutting tool
IPC: B23B27/16
Filed: 1964-04-09
Abstract: 1,006,742. Cutting tools. W. J. GREENLEAF. April 9, 1964 [Feb. 6, 1964], No. 14669/64. Heading B3B. A cutting tool having an indexable bit comprises a shank 1 with a formed heat 2 having an anvil 9 which provides a seating 8 for the bit 3 which is secured by a clamp 15. The shape of the clamp is such as to effect a wedging action between the shoulder 17 of the shank 1 and the rear face of the bit 3 to securely hold the bit on the seating 8. The clamp 15 is secured by a screw located in a T-slot in the shank. In an alternative embodiment the clamp is located on a screw by a spring clip, the screw being engageable with a threaded bore in the shank. Other polygonal forms of bit may be used other than the triangular form shown.
Patent GB-1405898-A (GB)
Title: Cyanine dyes
IPC: C09B23/06
Filed: 1972-03-29
Abstract: 1405898 Methine dyes ILFORD Ltd 21 March 1973 [29 March 1972] 14744/72 Heading C4P [Also in Division C2] Symmetrical dyes for sensitizing silver halide emulsions and electrophotographic layers comprising zinc oxide are of formula (in which R 1  is H, halogen, aryl or 1-4 alkyl or alkoxy; R 2  is optionally substituted alkyl; R 3  is H or 1-4 C alkyl; X is anion; p is 1 or 2). The dyes are prepared by condensing a 5-styryl benzoxazolium salt with an orthoester. The examples relate to dyes in which R 1  is H, methoxy or phenyl; R 2  is methyl, ethyl or sulphopropyl; R 3  is H, methyl or ethyl.
Patent GB-1066082-A (GB)
Title: A device for performing conversion with a non-linear conversion characteristic between a digital and an analogue signal
IPC: H03M1/00
Filed: 1964-04-10
Abstract: 1,066,082. Analogue-to-digital and digital-toanalogue converters. NIPPON ELECTRIC CO. Ltd. April 10, 1964 [April 12, 1963], No. 14879/64. Heading G4H. A digital-to-analogue converter with a non- linear companding characteristic comprises two series-connected voltage sources (21, 22) with two parallel networks connected across them, the first network comprising first (23) and second (24) weighted-resistor switch circuits which have equal sets of resistors but are controlled inversely by the digital input, and the second network comprising third (27) and fourth (28) weighted-resistor switch circuits which have equal sets of resistors, are controlled inversely by the digital input and are connected together via two non-linear resistors, the converter output being taken from between the first and second switch circuits and from between the non-linear resistors. Each bit (a 1 , a 2 ... a k ) of the digital input, if it is " 1," connect a corresponding binary-weighted resistor in each of the first (23) and fourth (28) networks into a parallel circuit and disconnects a corresponding binary-weighted resistor in each of the second (24) and third (27) networks from a parallel circuit. If the bit is '' 0," the opposite holds. The first (23) and third (27) switch circuits are fed by a positive voltage and the second (24) and fourth (28) by a negative voltage. The companding characteristic may be approximately logarithmic, with improved S/N ratio. The converter output may be compared with an input analogue voltage (11) to produce an error signal which controls the digital input to the converter. The system is capable of handling positive and negative analogue input voltages indifferently.
Patent GB-128807-A (GB)
Title: Improvements in Grinding Plates for Corn and like Grinding Mills.
Inventor: PELL HENRY WILLIAM LEACH
IPC: B02C7/13
Filed: 1918-09-13
Abstract: 128,807. Pell, H. W. L. Sept. 13, 1918. Disk mills.-A grinding-disk for corn and like mills is made from a thin disk a of mild steel which is formed on one face b with grooves, and is then hardened on that face, the remainder of the disk remaining tough. Or, the disk may be formed with grooves and hardened on both faces. The grooves may be formed by pressing, stamping, or milling.
Patent GB-802419-A (GB)
Title: Improvements in or relating to electrical counting equipment
IPC: H03K23/82
Filed: 1957-05-10
Abstract: 802,419 Electronic counting - apparatus. STANDARD TELEPHONES & CABLES, Ltd. May 10, 1957 [May 11, 1956], No. 14923/57. Class 106 (1). In electric counting equipment comprising cascaded bistable multivibrator stages 1-4, each stage having a pair of alternately conducting and non-conducting current-controlling devices, input pulses 3 are applied via a diode 4 to the first stage, and when another stage (4) is switched, current in device 16 causes a diode 19 to become conductive to cause diode 4 to be blocked while the non-conductive state of device 6 causes a diode 8 to be unblocked whereby the next input pulse is transmitted to the other stage, the counting sequence then commencing again. In the zero condition of the scale-of-9 counter shown, all the right-hand triodes, such as 6, are conductive. The counter steps in normal binary fashion until the 8th input pulse switches stage 4. The 9th pulse cannot reach stage 1 but is applied over line 10 to reset stage 4 and produce an output from the anode of triode 6.
Patent GB-200784-A (GB)
Title: Improvements in boot or shoe rough rounders and channelling machines
IPC: A43D43/02
Filed: 1922-02-15
Abstract: 200,784. Johnson, L. E., Peterson, 0. T., and Popp, L. A. Feb. 15, 1922. Trimming ; channelling.-Relates to sole roughrounding and channelling machines of the type described in Specifications 3497/96 and 13301/10, in which the work is fed by being gripped between swinging members comprising an abutment for the tread of the scle and moving with the channelling knife, and a member engaging the opposite face of the sole margin. The invention consists in a work-feed mechanism of this type in which the abutment and co-operating gripping member swing in parallel planes substantially perpendicular to the plane of the sole. An abutment 71 for the tread of the sole carries a channelling knife, and is swung about a pivot 28 by an eccentric 15. The other face of the sole is engaged by a presser foot 54 adjustably secured to a shaft 55 guided by a bearing 57 pivoted on stud 58 and operated by an eccentric 17 to descend and engage the work during the feed stroke and rise clear of the work on the return stroke. The machine shown is fully described in Specification 200,540.
Patent GB-1022457-A (GB)
Title: Change-over gas dispensing valve
Inventor: BAXTER LEONARD CHARLES
IPC: F17C13/04
Filed: 1964-04-13
Abstract: 1,022,457. Valves. PATERSON ENGINEERING CO. Ltd. Feb. 2, 1965 [April 13, 1964], No. 15077/64. Heading F2V. A change-over gas dispensing valve comprises two pressure-reducing valves 1, 2 arranged in axial alignment on either side of a cam 6. Each valve has an inlet to separate gas supplies and an outlet leading to a common outlet 15. Each valve comprises a valve closure carried by a diaphragm which is loaded by a spring 10 or 11 to the open position and subjected to the pressure in the common outlet urging the valve in the closed position. The cam 6 is movable between two positions in which it alternatively increases the spring loading. With the cam in the position shown, gas flows through the valve 2 to the outlet 15 and acts to hold the valve 1 closed. When the supply to the valve 2 is exhausted or drops below a preset pressure, the valve 1 opens to supply gas at this pressure to the outlet and the valve 2 is then held closed. The cam is then rotated to increase the loading of valve 1 which valve then allows delivery at a higher pressure.
Patent GB-1276614-A (GB)
Title: Fuel injection system
IPC: F02D41/36
Filed: 1970-03-31
Abstract: 1276614 Fuel injection systems BENDIX CORP 31 March 1970 [14 April 1969] 15082/70 Heading G1N [Also in Division H3] In an I.C. engine fuel injection control system pulses released in accordance with the engine crank angle are used to sequentially apply signals to AND gates 422 of respective injectors and to initiate pulses of the required injection duration from a device 26, which pulses are also applied to all the AND gates 422. The device 26 includes a generator which provides a signal having a time varying characteristic and a threshold detector which detects when the characteristic reaches a selected valve which is set in dependence upon engine operating parameter e.g. intake pressure, engine temperature &c. During the period the characteristic is below the selected value a pulse is applied to each of the AND gates. In one embodiment, Fig.4 (not shown), the generator comprises a ramp voltage generator (222) and the threshold detector (224) includes an emitter coupled transistor pair (248), (250), the base of one transistor having applied thereto the ramp voltage and the base of the other a voltage dependent on the engine parameters. A switching device is connected in the emitter circuit such that when the ramp voltage is below the engine parameter voltage an output is applied to the AND gates. In an alternative, Fig.5 (not shown), a capacitor which is connected to the gate electrode of a F.E.T. is charged, and the F.E.T. has applied to its base electrodes a voltage dependent upon engine parameters, such that the F.E.T. becomes conductive when the charge on the capacitor reaches a value sufficient to overcome the voltage. Any number of AND gates may be provided and each AND gate may be arranged to operate a group of injectors. Fluctuations in battery voltage which effect energization of the injectors automatically vary the time-varying characteristic of the generator.
Patent GB-580965-A (GB)
Title: Improvements in the manufacture of piezo-electric crystals
IPC: H01L41/22
Filed: 1943-09-14
Abstract: 580,965. Piezo-electric crystals. GENERAL ELECTRIC CO., Ltd., WOOSTER, N. A., WOOSTER, W. A., and FIELDING, E. A. Sept. 14, 1943, No. 15090. [Class 40 (v)] In a quartz plate, electrical twinning is reduced or removed by heating the plate to a temperature above the alpha-# inversion temperature (about 573 C.) and then cooling while the plate is maintained in a strained state. The sense of the optical activity of the crystal is unchanged by the treatment. One way of producing strain in the crystal is by maintaining a temperature gradient in the crystal while it cools down through the inversion temperature. This is done by placing the crystal in a hollow metal rod heated at one end by a coil to produce a temperature gradient along the rod, and the whole is placed in a muffle furnace and heated slowly to about 600 C. and allowed to cool. Fig. 15 shows a method of producing a mechanical torque in a crystal bar 27 which is held fixed at one end in a slot 28, while the other end is engaged in a slot 32 in a metal member 31 having knife edges 29, 30 engaging V-slots in a trough-shaped member 23. A bar, not shown, is engaged in a hole 33 and suitably weighted to rock member 31 and maintain an adequate torque on the crystal 27. The whole apparatus is then placed in a muffle furnace and heated slowly to about 600 C. and allowed to cool. The Specification describes those crystal cuts which are most suitable for using the invention and points out the limitations. For example, where the plane of a crystal plate is parallel to either the major or minor apex faces, the electrical twinning is completely removed by applying a mechanical torque during cooling. With some other cuts no effect is produced. The temperature gradient method of producing a strain does not completely remove electrical twinning but may be used to reduce the amount of the crystal subject to twinning. When repeated several times, the method results in a stable pattern of twinning which enables smaller homogeneous plates to be cut from the untwinned parts of a large plate after such treatment. Figs. 16 (a-g) show the characteristic electrical twinning patterns of a number of cuts of crystal obtained by the temperature strain method, the twinned portions being shaded. Homogeneous plates of a useful size may be cut from the plates as indicated by the dotted lines. Figs. 16 (f) and (g) are special cases where the plane of the crystal plate is at right angles to the optical axis of the mother crystal. In these cases, the twinning pattern may be used to cut a number of smaller plates or the plates may be used entire with suitable electrodes for natural modes of vibration.
Patent GB-475891-A (GB)
Title: Improvements in or relating to pressure gauges and air chucks for use with compressed air or similar fluid
IPC: B60S5/04
Filed: 1936-05-28
Abstract: 475,891. Pipe couplings. SCOVILL MANUFACTURING CO., and WINTER, W. J. May 28, 1936, No. 15112. Addition to 336,518, [Class 106 (ii)]. [Class 99 (i)] [Also in Group XIX] A disconnectible coupling to enable a pressure gauge or inflating nozzle to be used with twin tyres com prises a double foot ir which the main axis of the double valve member makes an acute angle witl the stem of the gauge or inflating nozzle. A casting 1 fitted with the usual valves 2, 2a has an offset portion 3 or its wall screwed to receive the straight stem 4 of a pressure gauge or air nozzle entering at an acute angle.