baber/WOPTO huggingface dataset:
Patent GB-516575-A (GB)
Title: New or improved means for ensuring unidirectional rotation of a shaft
IPC: B60T7/12
Filed: 1938-06-23
Abstract: 516,575. Preventing reverse rotation. HACKETT, A. G., and EDWARDS, J. L. June 23, 1938, No. 18617. [Class 103 (i)] In means for preventing reverse rotation of a vehicle or other shaft comprising balls f arranged to wedge between inclined recesses e in a fixed disc c and a collar b on the shaft, an angularly movable gapped ring d is provided, one end h of each gap being inclined so that in one position of the ring, the adjacent ball is displaced from the collar and held at the wider end of the gap as shown. Noise due to the rotation of the balls in contact with the collar is thus prevented. The ring may be moved by hand but is preferably coupled lightly to the collar b as by a spring-pressed shoe j so that the balls automatically engage the collar when the shaft tends to rotate in the clockwise direction. The movement of the ring d is limited by a stop m. Where the device is fitted to a vehicle transmission shaft means actuated by the gear selecting mechanism may hold the ring in the position of Fig. 1 to enable the vehicle to be driven in reverse. On a trailer vehicle, the ring may be spring urged to the operative position but be normally held in the position of Fig. 1 by a latch which is released by a cable extending to the tractor when the coupling breaks.
Patent GB-1061233-A (GB)
Title: Strain gauges
IPC: G01L1/22
Filed: 1964-05-05
Abstract: A strain gauge comprises a wire or foil of an alloy of Pt and Pd or Pt and Rh or a ternary alloy of Pt, Pd and Rh., the composition falling within the area Pt 25% + Rh 75%; Pt 55% + Rh 45%; Pt 85% + Pd 15%; Pd 85% + Pt 15%; Pd 85% + Rh 10% + Pt 5% and Pt 5% + Pd 20% + Rh 75% in the atomic percent ternary diagram. Examples of composition are given in which the atomic percent of Pt varies from 10 to 80% of Rh from 0 to 70% and Pd from 0 to 80%
Patent GB-906040-A (GB)
Title: Sintered photo electric resistance
IPC: H01L31/08
Filed: 1960-05-27
Abstract: 906,040. Photo-electric resistances. CESKOSLOVENSKA AKADEMIE VED. May 27, 1960 [June 5, 1959], No. 18745/60. Class 37. In a method of producing a sintered photoelectric resistance the sintering is carried out with the resistance material in contact with two conducting bodies which afterwards serve as supply electrodes, the material being ensleeved in a protective tube between the electrodes. In the preferred embodiments, a glass capillary tube 6 mm. (O.D.), 1.2 mm. (I.D.) and 15 mm. long has inserted in one end to occupy one-third its length, a copper supply electrode, the tube being filled from the other end with cadmium sulphide activated with silver nitrate to form a column 1 to 1.5 mm. long, the assembly being completed by the insertion of a second electrode in this end of the tube. The assembly is then placed in a ceramic holder and heated to 540 ‹ C. for 40 minutes then allowed to cool to 200‹ C. over a period of 60 minutes. The unequal thermal expansion of the copper electrodes and the ceramic holder produces a compression of the CdS while the heating takes place. Intermediate electrodes may be provided to form differential photo-resistances by providing a bore transverse to the axis of the capillary tube for the insertion of the intermediate electrode.
Patent GB-166147-A (GB)
IPC: B41J1/32
Filed: 1921-07-11
Abstract: 166,147. Allgemeine Elektricitõts-Ges. July 10, 1920, [Convention date]. Index type-wheel machines; caseshift mechanism.-In machines having the type-wheel connected to a pointer movable over an index plate, and to an impression key, shift mechanism for the type-wheel is operated by one or more additional impression-keys. The shaft 1 of the type-drum 2 is revoluble in a frame 3 which can rock on yoke 4 pivoted to the base 7. A rod 16 mounted to slide in the frame 3 is formed with teeth engaging a pinion 18 provided with a pin 19 engaging a cam slot 20 in the shaft 1. The rod 16 is secured to a flat spring having ball-and-socket connection with a pointer 9 which is movable over an index plate 13 and is formed with a head 10 entering a stationary socket 11. For printing small letters, impression is effected by depressing a key-lever 21 connected by a link 24 to the frame 3. For printing capitals, impression is effected by depressing a key-lever 27 which is pivoted at 28 to the key-lever 21 and is connected by a link 30 to a bell-crank 32 pivoted to a plate 34 on the frame 3 and engaging a circumferential groove 36 in the pinion 18. On depressing the key-lever 27, the pinion 18 is moved axially to the position shown, and the pin 19 co-operates with the slot 20 to rotate the type-drum for shift; the key-lever then depresses the type-drum for impression. The keylever 27 is formed with a lug 39 engaging a spring 37 abutting on a stud 38 on the key-lever 21. In a modification, the pinion 18 is secured to the shaft 1 and imparts axial shift to the typedrum. By providing one, two, or three additional impression-keys, the index-plate can be reduced to one-half, one-third, or one-quarter the usual size respectively.
Patent GB-427935-A (GB)
Title: Improvements in couplings for connecting together a pair of shafts lying on the sameaxis
IPC: F16D1/10
Filed: 1934-06-25
Abstract: 427,935. Shaft couplings. NAAMLOOZE VENNOOTSCHAP MACHINERIEEN - EN APPARATEN FABRIEKEN MEAF, (formerly NAAMLOOZE VENNOOTSCHAP MACHINERIEEN-EN APPARATEN FABRIEKEN), 30, Croeselaan, Utrecht, Holland. June 25, 1934, No. 18768. Convention date, March 16. [Class 80 (ii)] [See also Group XVIII] Means for coupling the coin mechanism shaft G and the counting mechanism shaft H of a gas meter comprise a sleeve A, pinned to the shaft H, and a ring B which is slidable in or on the sleeve under the control of a spring F and which carries a pin C engaging longitudinal slots D in the sleeve, the pin C co-operating with a slot K in the end of the shaft G.
Patent GB-140361-A (GB)
Title: Process and apparatus for rendering wood impermeable and recovering liquids contained therein
IPC: B27K3/06
Filed: 1919-07-29
Abstract: 140,361. Roy, C. March 15, 1919, [Convention date]. Addition to 130,981. Wood, treating with liquids.-In modified apparatus for carrying out the process of impregnating logs claimed in the parent Specification, an annular disk-head h, with a circular cutting-edge h<1> forming a seating h<2> for a rubber or like packing-washer h<3>, is interposed between the recessed surface of the cylindrical body f and the end of the log, so as to form a tight joint to resist the pressure of the liquids delivered to the pivoted cylinder e. Fig. 2 shows also the means for clamping the end of a log i of medium diameter to the apparatus, the clamp consisting of a ring 1 having screw-operated radially sliding gripping-shoes 3 for gripping the log, and bolts 5 for securing it to the flange f<2> of the body f. Logs of large diameter are secured to the apparatus by the arrangement shown in Fig. 3, comprising hooked bolts 8, rods 9 engaging therewith, and rods 11 with adjustable spiked claws 12 engaging the end of the log, the ends of the rods 9, 11 threading into tightening- sleeves 10. For logs of great length and small diameter, such as telegraph poles, the head h, as shown in Fig. 4, is extended to form a sleeve h<4> in which the end of the log is engaged, and the clamping-arrangement comprises hooked bolts 8, cables or rods 13, collar 15 with hooks 14, 17 screwed rods 18, 20, spiked claws 21, and tightening-sleeves 19.
Patent GB-343858-A (GB)
Title: Improvements in and relating to carriers for pneumatic despatch systems
IPC: B65G51/06
Filed: 1930-06-19
Abstract: 343,858. Carriers for pneumatic dispatch apparatus. LAMSON PNEUMATIC TUBE CO., Ltd. and BURL, H., 132, Cheapside, London. June 19, 1930, No. 18776. [Class 116.] A carrier particularly for transferring fragile cylindrical articles such as phonograph records, comprises a central mandrel or support 6 and a detachable buffer lid 10 adapted to engage and to be secured to the mandrel to hold the article in position. The carrier 4 is closed at one end bv the circular felt buffer 5, to which is secured the preferably cylindrical central mandrel 6, which is provided with two bayonet grooves 13 engaging pins 12 on the cap 11, which depends from the felt buffer 10. Linings 7, 8 and washers 14, 15 of felt are provided. The mandrel may be secured to the underside of the lid and may be detachably locked to the bottom of the cylinder, and if hollow may be used to accommodate papers &c., while the bayonet joint 13 may be replaced by any alternative fastening.
Patent GB-352695-A (GB)
Title: An improved egg-tester
IPC: G01N33/08
Filed: 1930-06-20
Abstract: 352,695. Testing eggs. MILNE; J. S., Lilburn, Beechgrove, Whickham, and NICHOLSON, E., Coppy, Beamish, both in Durham. June 20, 1930, No. 18811. [Class 28 (ii).] An egg tester consists of a scoop-shaped portion into which the egg is scooped, an aperture being provided in the scoop to pass the rays from a testing light. The light may be an electric lamp supplied with current from dry or wet cells, or an accumulator, and the lamps may or may not be associated with a lens or reflector. As shown, the lamp C is illuminated by a dry cell in the handle D of the scoop A. The scoop A may be blackened internally, and the light may be controlled by a switch.
Patent GB-1108637-A (GB)
Title: Brake actuator
Inventor: DOBRIKIN HAROLD LAURENCE
IPC: B60T17/10
Filed: 1965-05-04
Abstract: 1,108,637. Brake actuator; pistons. BERG MFG. & SALES CO. 4 May, 1965, No. 18849/65. Headings F2F and F2T. A brake actuator comprises a housing 1 divided by a flexible diaphragm 4 positioned between a brake operating member 8 and a piston 15, conduits 12 and 13 being provided for supply pressure fluid to actuate the member 8 by the diaphragm for service braking and by. the piston for emergency braking respectively. The rod 8 may be connected to a slack adjuster. Hydraulic or pneumatic fluid may be employed. The piston 15 has internal ribs 16a and a convex head, while tapers 22, 23 and 24 and a land 25 permit the piston to float on its seal ring 21 during operation and recentre itself in its cylinder as it is returned to the cylinder 3, after operation, by the spring 11.
Patent GB-797641-A (GB)
Title: Improved means for effecting fine adjustment of a signal transducing element
IPC: G11B5/004
Filed: 1956-06-19
Abstract: 797,641. Magnetic recording and reproducing apparatus. NATIONAL CASH REGISTER CO. June 19, 1956 [June 24, 1955], No. 18892/56. Class 40 (2). In a magnetic record apparatus employing a cylindrical signal storage medium 5, the position of the record and reproduce heads 14, 13, respectively, are finely adjusted with regard to each other, or in relation to a record head producing a timing track 7 such as may be used in a digital computer, by means of adjustable eccentric mounting sleeves 10, 11. The said sleeves are friction tight in a rigid supporting member 1 and are provided with set-screws 17 which enable the head mounts 2, 3 to be accurately secured in an axial direction relative to the cylinder 5. Adjustment of the sleeves 10, 11 may be effected by a key spanner which engages holes 31 in the said sleeves.
Patent GB-420922-A (GB)
Title: Improvements in street lighting apparatus
IPC: F21V5/00
Filed: 1933-07-05
Abstract: 420,922. Prismatic refractors for street lamps. HOLOPHANE, Ltd., and ENGLISH, S., Holophane House, Elverton Street, Vincent Square, London. July 5, 1933, No. 19089. [Class 75 (ii)] A dish-refractor 1, shown in Fig. 1 and adapted to be positioned beneath the light source of a street - lamp, is provided with a series of radial prisms 5 arranged about predetermined axes to produce an asymmetric distribution of light in horizontal planes, combined with concentric horizontal prisms 4, which are so arranged and of such strength that light which would normally fall in the region of the lamp, is spread to greater distances from it. Similar light distribution may alternatively, as shown in Figs. 5 and 8, be effected solely by series of arcuate lenticular lenses 6, which lie in parallel planes and are provided on one surface of a dish refractor. When radial and horizontal prisms are used, the two sets may be formed, as shown, on one piece of glass, or separately on two pieces. In the case of a refractor used in a gas lamp, a slot 7 shown in Fig. 7, is provided to facilitate the removal of the refractor. The refractor shown in Fig. 8 may be used in combination with the dome refractor 8 of Specification 380,318. Specifications 235,797 and 285,327, [both in Class 75 (ii)], also are referred to.
Patent GB-350256-A (GB)
Title: Improvements in controllers for direct current motors
IPC: H02P1/20
Filed: 1930-06-23
Abstract: 350,256. Master control of D.C. motors. IGRANIC ELECTRIC CO., Ltd., 147, Queen Victoria Street, London.- (Cutler-Hammer Manufacturing Co. ; Milwaukee, Wisconsin, U.S.A.) June 23, 1930, No. 19117. [Class 38 (iii).] Field control; armature control.-A motor is accelerated by repeatedly including and excluding a resistance in the armature or field circuit by means of a vibrating relay actuated by induced current according to the variations of the motor current. In Fig. 1, switches 1, 2, 3 are closed successively by the movement of a master switch 4 to its third position. Upon movement to its final position the switch 4 energizes an opening coil 25 of a vibrating relay 5, a closing coil 24 of which is repeatedly energized by currents induced through a transformer T by the surges of motor current. The relay 5 is thus vibrated to include and exclude a resistance r2 in the field circuit. When the motor reaches full speed the final surge is insufficient to energize the coil 24 and the relay 5 remains open. In Fig. 2 (not shown) the vibrating relay controls a resistance in the motor armature circuit.
Patent GB-334643-A (GB)
Title: Improvements relating to electrostatic telephone receiving instruments
IPC: H04R19/00
Filed: 1929-06-21
Abstract: 334,643. MachÚ, G. April 30, 1929, [Convention date]. Condenser telephones; diaphragms. - In an electrostatic loud-speaker comprising a vibratory diaphragm and at least one fixed electrode, the diaphragm surface is of wave formation or consists of a number of separate curved portions presenting abrupt changes in direction at their junction lines or points so that upon variation in the driving potential, a flattening or rolling out action of the diaphragm takes place. The fixed electrode may also be in the form of corrugated strips or troughs. Fig. 1 shows a construction employing a flat perforated fixed electrode a, whilst the movable electrode b is given the shape of a series of trough-like strips, the central line of each trough being separated from the fixed electrode by a layer of solid dielectric c. According to a modified construction (Fig. 2, not shown), the movable electrode is of wave formation whilst the fixed electrode is in the, form of corrugated strips or troughs. Fig. 3 shows a further modification in which the movable electrode b, shaped as in Fig. 1, is disposed between a flat perforated fixed electrode a and a second fixed electrode a<1> in the form of corrugated strips or troughs.
Patent GB-625677-A (GB)
Title: Improvements in or relating to a stably tacky pressure-sensitive adhesive and methodof producing the same, and an adhesive tape or sheet including the improved adhesive
IPC: C09J7/02
Filed: 1946-06-27
Abstract: A pressure-sensitive adhesive is produced by vulcanizing a rubber composition which is less cohesive than adhesive to a stage at which the product is more cohesive than adhesive but still tacky, the vulcanization being substantially completed at this stage so that after-vulcanization and tack-loss will not occur. The rubber may be brought into the condition where it is less cohesive than adhesive by subjecting it to an oxidative breaking down by prolonged heating and mechanical working, e.g. for 2 hours with steam at 20 lbs. per sq. in. pressure in the presence of air until the rubber is pasty and sticky, preferably in the presence of 0.25 to 5 per cent of an oxidation catalyst such as a zinc chloride double salt of phenyl hydrazine or a mixture of aryl mercaptans, or may be liquified without mechanical working at higher temperatures, e.g. by heating for 16 hours with steam at a pressure of 50 lbs. per sq. in.  The rubber is preferably vulcanized by heating with a self-vulcanizing organic accelerator of the thiuram-polysulphide type in the presence of a zinc compound as activator, the presence of free sulphur being preferably avoided, although a small amount may be used in the presence of a very powerful ultraaccelerator of a type that does not yield sulphur.  Selenium, preferably in combination with a thiuram-polysulphide type accelerator, may be employed as vulcanizing agent, and the rubber may also be transformed from the adhesive to the cohesive state by use of an oil-soluble heat-advancing rubber-reactive phenol-aldehyde type resin in conjunction with zinc oxide as catalyst.  Fillers, such as zinc oxide, whiting, clay and carbon black, pigments, plasticizers and softeners may be added. Tack-producing resins, such as a low-acid type ester gum or a hydrogenated indene type resin may be incorporated preferably before vulcanization.  Methods of utilising the product in the production of adhesive tapes or sheets are described (see Group VIII).
Patent GB-937135-A (GB)
Title: Improvements in the production of melamine
Inventor: POMOT JEAN LOUIS EMILE
Filed: 1960-05-31
Abstract: Melamine is prepared by heating urea with cyanuric acid in molecular proportions of at least 3 : 1 at a temperature between 300 DEG  and 400 DEG . in a closed vessel.  The cyanuric acid may be fed to the reaction zone in powder form and the urea in a solid or fused form. Alternatively, the cyanuric acid may be admixed with the urea, either as a fine suspension in fused urea or in the form of grains or pellets of a homogenous mixture with urea, prior to feeding into the reaction zone.  The melamine produced is preferably removed from the reaction vessel as vapour in a stream of a hot inert gas and is preferably removed from other reaction products by extraction with hot water.  The reaction is preferably conducted in the lower part of a reaction vessel in which the upper part is equipped with obstacles on which melamine formed in the lower part will condense, such melamine being removed at the end of the reaction by means of a current of heated inert gas. Specification 937,136 is referred to.
Patent GB-1179701-A (GB)
Title: Improvements relating to Automatic Gain Control Circuits
Inventor: WHITE LAWRENCE MARCEL
IPC: H03G3/30
Filed: 1966-05-03
Abstract: 1,179,701. Automatic gain control. SPEMBLY Ltd. 28 April, 1967 [3 May, 1966], No. 19348/66. Heading H3T. In a transistor amplifier automatic gain control is provided by a further transistor so connected as to vary the impedance of a resonant circuit being in a saturated condition when no signal current flows in the resonant circuit. Common emitter amplifier VT1, Fig. 1, is fed from a series resonant circuit comprising inductance L1 and capacitance Cl, in series with which is the collector-emitter path of auxiliary transistor VT2. Transistor VT2 is normally biased into a saturated condition via resistors R1, R2, but derives a positive base bias from detector D1 which biases it back, so increasing its impedance, as the signal level increases. In a second embodiment amplifier VT3, Fig. 4, is in common base connection, the emitter being fed from series resonant circuit L1, C1 via the collector-emitter path of auxiliary transistor VT4 and diode D2. Normally the transistor VT4 is biased to the saturated condition and diode D2 is conductive, but as the signal level rises a bias applied from the detector diode to the base of a further transistor VT5 biases the latter back. The fall in potential across resistor R8 biases transistor VT4 back, increasing its impedance and in the limit diode D2 becomes non-conductive and reduces the gain still further.
Patent GB-242232-A (GB)
Title: Improvements in machines for sewing on buttons
IPC: D05B3/14
Filed: 1925-07-30
Abstract: 242,232. Haenicke, A. Oct. 29, 1924, [Convention date]. Button - attaching machines. -A machine for sewing buttons in rows on to cords or material is provided with means for automatically starting a new row at the finish of the one completed. A card 22 to which buttons are to be attached is mounted be. tween guides 21 forming part of a frame provided with slides 2 which are traversed in the direction of a row by a cam 9 engaging a roll 8 on a linkage 5, 7 connected to the slide. The cam is actuated step-bystep by a pin and star wheel drive 12, 11 geared to the driving wheel 16. The device for shifting the card laterally after a row of buttons has been attached comprises a pair of toothed wheels 25, 26 fixed on a shaft 23 and adapted to grip and advance the card when rotated. A long union 24 is rotatably mounted on the shaft and has a clutch member at each end adapted to engage alternatively with clutch members 27, 28 on the shaft 23. The pinion is moved to engage the clutches by an arm 29 held normally in disengaging position by springs 30, 31. The pinion 24 is oscillated idly, during the stitching of a row of buttons, by a toothed sector 32 driven from a cam 34 but when the end of a row is reached the arm 29 strikes against a stop 35 or 37 which causes one of the couplings to be engaged and the card to be moved through the space between two rows. The position of the stop members is adjusted by means of a bar 41. A button holder 43 raised and lowered by a cam 44 bolds each button in position for stitching. A button is fed into position beneath the holder by an arm 46 which is actuated by a rod 48 to engage a button manually placed in position against a gauge 45 and transfer it to the holder, points 47 on the arm entering the holes in the button. It is stated in the Specification that means are provided to prevent the feeding of a button unless the points 47 are properly engaged in the holes in the button.
Patent GB-516625-A (GB)
Title: Improvements in or connected with press tools for the production of dust-pressed tiles and such like
IPC: B30B15/00
Filed: 1938-06-30
Abstract: 516,625. Moulding dust-pressed tiles &c. WRIGHT, G., and ADAMS, B., [trading as POTTERIES VENTILATING & HEATING CO.]. June 30, 1938, No. 19384. [Class 87 (ii)] To prevent portions of the dust in the die cavity of a press for moulding dust-pressed tiles &c. from escaping into the atmosphere, the pressure punch 5 is provided with a hood 13 preferably of bellows form which is connected to a suction pipe 14 and the lower edge of which is adapted to make contact with the upper edge of the bed-plate 7 containing the mould cavity 6 and the ejector plunger 8. The hood may be made in two parts. Specification 508,598 is referred to.