baber/WOPTO huggingface dataset:
Patent GB-333967-A (GB)
Title: Improvements in copyholders especially for typewriters
IPC: B41J29/15
Filed: 1929-06-01
Abstract: 333,967. Balbi, G., and Bortolozzi, N. June 1, 1929, Copy-holders.-In copy-holders of the kind in which the copy is held between two rollers, one of which can be rotated by means of a key-lever, means is provided for rotating the roller in either direction, so as to move the copy upwards or downwards. The copy-holder comprises two uprights 1 of channel section, mounted on a base 17 and connected at the top by angle-bars 21, 25. In the uprights is mounted a roller 2, covered with india rubber &c. and having at each end a ratchetwheel 9, the teeth of the two ratchet-wheels pointing in opposite directions. Each ratchet-wheel is engaged by a pawl 11, pivoted on a plate 10, which can turn about the shaft of the roller 2. The pawl is spring-pressed towards the ratchet, and is retracted at the lower end of its stroke by a fixed stop 13. The plate 10 can be rotated, in order to feed the copy, by a rod 14, operated by a key-lever 16 against the pressure of a spring 15. A key-lever is provided at each side of the device, one being adapted to feed the copy upwards, and the other downwards. The copy is held in contact with the roller 2 by a spring-pressed roller 3, and passes between the angle-bars 21, 25 and over a support 22.
Patent GB-573119-A (GB)
Title: Improvements in or relating to web guiding mechanism
IPC: B65H23/02
Filed: 1943-10-15
Abstract: 573,119. Feeding webs. GOSS PRINTING PRESS CO., Ltd. Oct. 15, 1943, No. 16997. Convention date, Oct. 17, 1942. [Class 100 (i)] Mechanism for guiding a travelling web transversely comprises a pair of parallel rollers over which the web passes in a substantially Z-shaped course, each roller being mounted at one end in a fixed position, means being provided to move the other ends of the rollers simultaneously to adjust the rollers angularly in relation to the run of the web while maintaining them parallel to each other. In one form. Fig. 3, the movable ends of the rollers 20, 21 are adjustable both vertically and horizontally and for this purpose the rollers are mounted in bearings 37, 38 adjustable horizontally on guide rods 56 by screws 60, 61, interconnecting gearing 65, 68, 70, 69, 67 and a hand wheel 64. The rods 56 are carried by a frame 50 slidable vertically on guide rods 45 carried by a fixed bracket 40 and operated by means of a screwed rod 47 and hand wheel 48. In a second form, Fig. 9, the rollers are adjustable in one plane only, the movable ends being mounted in bearing 73, 78 adjustable by screws 74, 79, interconnecting gearing 82 .. 86 and hand wheel 81.
Patent GB-611989-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H03G11/00
Filed: 1946-06-04
Abstract: 611,989. Radio receiving circuits. P.R.T. LABORATORIES, Ltd., and FELDMANN, P. A. June 4, 1946, No. 17000. [Class 40 (v)] A voltage derived from an interference signal at -the post-detector stage of a receiver suppresses a pre-detector stage valve during the time of the interference. In the television receiver described, the output of an R.F. or I.F. amplifier V1 is demodulated by the diode D1, the video-frequency output being amplified by V3 and fed both to the output terminal t3 and to the cathode of diode D2. This cathode also has an adjustable positive bias tapped off bias resistor 8; and the anode is connected to the suppressor grid g3 of V1, which grid is earthed through a resistor 7. A signal applied to the cathode of D2 of amplitude sufficient to overcome the bias voltage, causes the diode to conduct; the resulting current through resistor 7 reduces the voltage on g3 so that V1 cuts off, during the occurrence of the interference signal.
Patent GB-171050-A (GB)
Abstract: 171,050. Stringfellow, J. Dec. 13, 1920. Matches.-The end that is to be dipped into igniting-material is provided with two or more slots about half an inch long so that the igniting- material forms a bridge between the divided end portions. Double-headed matches are slotted in the same way at both ends.
Patent GB-612908-A (GB)
Title: Improvements in or relating to the manufacture of double-shuttle cut-pile moquettes and like fabrics
IPC: D03D39/16
Filed: 1946-06-06
Abstract: 612,908. Jacquards; weaving pile fabrics. WALKER, E. S., (trading as WALKER & SONS, J. H.), and HARRISON, L. S. June 6, 1946, No. 17151. Drawings to Specification. [Classes 142(i) and 142(iv)] In weaving fabrics face to face with pile ends of several colours in each dent of the sley, the ends not in use for making pile are distributed equally between the upper and lower fabrics by a jacquard in which half the uprights have an extra hook for engagement by an extra griffe working between the middle and top of the double shed. The double hooks control either half the pile ends in each dent or all the ends in alternate dents.
Patent GB-330138-A (GB)
Title: Improvements in and relating to car air brake releases
IPC: B60T15/58
Filed: 1929-06-04
Abstract: 330,138. Meadows, C. L. June 4, 1929. Fluid pressure.-The brakes on cars which fail to release on increase of train pipe pressure arereleased by opening the bleed cock E of the auxiliary reservoir B by means of a cylinder 2 connected by a branch line 7 with an auxiliary air line 1, a valve 8 in the branch line being opened by an arm 10 when the brake piston moves to apply the brake. Air is admitted by a driver's valve to the line 1, and if the brake piston has not moved to release position, can pass through the valve 8 and operate the valve E by means of the cylinder 2. When the brake pistons move to release position the valve 8 will close and the branch 7 will be connected by a bleed passage to atmosphere in order to bleed the cylinder 2 and reclose the valve E. Each section of the main line A is connected to the line 1 by a pipe 17 so that by opening a valve 18 in this pipe main line air may operate the bleed valves. Cocks 19, 21 on the auxiliary and main lines respectively are connected by a link 20.
Patent GB-544114-A (GB)
Title: Improvements in and relating to the production of metal articles by extrusion
IPC: B21C25/08
Filed: 1940-12-04
Abstract: 544,114. Metal bars. HIGH DLTTY ALLOYS, Ltd., and HERON, J. A. Dec. 4, 1940, No. 17254. [Class 20 (ii)] [Also in Group XXII] A profile section bar, such as a light alloy spar for aircraft, ships, &c., is extruded with integral portions of different cross section. The billet may be forced through a divided die 8 followed by another 3 of reduced aperture, the die parts 3 being separated when intermediate portions of larger section are required. The end portion E is of enlarged section in any case. In a modification the die 2, Fig. 5, may include sliding segments 11 which are displaced by fluid-operated pistons 13 to vary the extruded section. Specifications 518,037 and 524,189, [both in Group XXII], are referred to.
Patent GB-623023-A (GB)
Title: Improvements in and relating to carriers, holders, frames and the like
IPC: A47G1/14
Filed: 1946-06-06
Abstract: 623,023. Stands. BENNET, L. G., and BENNET, W. S. June. 6, 1946, No. 17277. [Class 52 (iii)] In a stand for calendars, date pads, &c. of the kind comprising a base and upright supporting members in which members grooves, are provided for reception of the 'side edges of the date pad means are provided to keep the lower edge-of the pad clear of the base to permit the attachment of a slidable indicator. , The stand shown in Figs. 1 and 3 comprises a base 10 and two uprights 11 the inner opposing face-of each of which is provided with a groove 12 for the reception of the side edges of the date pad &c. The uprights 11 may be integral with or attachable to the base 10 which may be provided with a groove 13 for the reception of the bottom edge of the date pad the groove 13 being provided at its ends with steps 17 so that the date pad &c. is kept clear of the bottom of the groove 13 to give clearance for a sliding indicator. The top of the uprights 11 may be connected by a member 14 having a corresponding groove and steps 18. The grooves for the reception of the date pad may be provided at the front with a beading 16. In the form shown in Fig. 6 the base is of sheet metal and the superstructure 23 is formed as a metal sheet the side edges of which are turned inwardly to provide grooves 27 which are closed at 28. The superstructure 23 is secured to the base by means of the bent lower end 24, 25 being passed through a slot in the base and clamped in position. The back may comprise an opening for viewing the back of the date pad &c.
Patent GB-987592-A (GB)
Title: Low noise amplifier, especially for use with a signal source having an impedance comprising a reactive component
Inventor: WIN JOHN LEWIS EDWIN BALD
IPC: H03F1/34
Filed: 1962-05-07
Abstract: 987,592. Valve and transistor amplifying circuits. RANK-BUSH MURPHY Ltd. May 6, 1963 [May 7, 1962], No. 17427/62. Headings H3T and H3W. Negative feed-back is used to introduce a reactive component into the input impedance of an amplifier. The arrangement is more particularly intended for matching the input of the amplifier to a device whose output impedance includes a similar reactive term. In one embodiment a device 1, Fig. 2, whose output impedance comprises resistance R, in series with inductance L feeds via a D.C. blocking capacitor 4 and bias resistor 5 into the emitter circuit of a transistor 18 in common base connection; alternatively it may feed into the cathode of a valve in grounded grid connection (Fig. 1, not shown). The output across the collector or anode load impedance 7 is amplified in an amplifier 10 and applied to either a transistor 19 in emitter follower connection or to a cathode follower. Part of the output of this is fed back to the base of the input transistor 18 or grid of the corresponding valve via a potentiometer comprising resistors 15, 16 and capacitor 14, the latter being chosen to so modify the feed-back as to give the input impedance of the device 18 an inductive term effectively in series with a resistive term. In the arrangement of Fig. 2 D.C. negative feedback may in addition be applied to the base of transistor 18 over resistor 20 and by-pass capacitors 21, 22 in order to stabilize the working point. Instead of returning one end of the device 1 to the ground line 25, it may be connected to the feed-back resistor 20, in which case the response shows a sharp cut-off at very low frequencies (Fig. 3, not shown). The Specification also describes (Fig. 4, not shown) an arrangement for operating from a device whose impedance comprises resistance and capacitance in series. In this the first transistor is in common base connection and feeds an emitterfollower, negative feed-back being provided from the emitter circuit of the latter to the base of the first transistor. To obtain the desired input impedance characteristic, the collector load of the first transistor comprises a resistor shunted by a capacitor.
Patent GB-709942-A (GB)
Title: Novel chemotherapeutic thiosemicarbazones
Filed: 1951-07-23
Abstract: The invention comprises thiosemicarbazones of the general formula <FORM:0709942/IV (b)/1> wherein X is a nitro, amino or acylamino radical and Y is a linkage joining the aromatic nuclei a and b, either by a direct valency bond or through a divalent -CO-, -S- or -SO2-radical.  The following examples are given: (1) thiosemicarbazide is added to an alcoholic solution of 4-nitrodiphenyl-41-aldehyde (prepared by reacting 4 - nitro - 41 - bromomethyl - diphenyl with hexamethylenetetramine), or to 4 - nitrodiphenyl - 41 - aldehyde diacetate (prepared by oxidizing 4-nitro-41-methyldiphenyl with chromic acid in the presence of acetic anhydride), which has been boiled with alcoholic HCl and then neutralized, to yield the thiosemicarbazone of 4-nitrodiphenyl-41-aldehyde; (2) 4 - nitro - 41 - methylbenzophenone is oxidized with chromic acid in glacial acetic acid and acetic anhydride to give 4-nitro-benzophenone-41-aldehyde diacetate which is hydrolysed with alcoholic HCl and reacted with thiosemicarbazide to give 4-nitrobenzophenone-41-aldehyde thiosemicarbazone; (3) 4-acetylamino-diphenylsulphide-41-aldehyde (obtained by reducing 4-acetylamino - 41 - cyanodiphenyl sulphide with stannous chloride) is reacted with thiosemicarbazide; (4) 4-nitrodiphenyl sulphone-41-aldehyde diacetate is treated with thiosemicarbazide; (5) 4-acetylaminobenzene sulphinic acid potassium salt is reacted with 4-chlorobenzaldehyde and the 4-acetylaminodiphenyl sulphone-41-aldehyde formed converted into its thiosemicarbazone.
Patent GB-1377831-A (GB)
Title: Interferometers for fluid flow measurements
IPC: G01F1/66
Filed: 1972-04-17
Abstract: 1377831 Measuring velocity photo-electrically DEFENCE SECRETARY OF STATE FOR 12 April 1973 [17 April 1972] 17562/72 Heading G1A [Also in Divisions G2 and H4]  In a device for measuring the velocity of fluid in a pipe, a reference beam and a beam passed through the fluid are combined to form interference fringes, the reference beam being scattered in to several angles, a component of the reference beam at a selected angle being combined with the beam passing the fluid at the corresponding angle. A laser 1 supplies a reference beam and a further beam via mirror/reflector 4. The reference beam is scattered by device 12, e.g. a grease spot on a glass plate, and a component at angle α selected by a mirror 5. The further beam is passed via mirror 6 to the fluid in pipe 10, particles being added by device 13 to aid the velocity measurement. A mirror 7, coupled to mirror 5 both rotatable about axis 21, detects a refracted component of the further beam corresponding to the reference component at angle α. The two beams are combined at semi-silvered plate 7 to form interference fringes which are detected by apparatus 14. A further embodiment Fig. 4 (not shown), utilizes three reference beams at different angles which are confined with three corresponding components of the further beam. This embodiment is utilized to give a three dimensional measurement of the fluid flow. Fig. 3 (not shown), illustrates detection apparatus at the output of device 14. The apparatus is coupled to photo-multiplier (14) and comprises a filter (25), a squaring amplifier (26) and a frequency discriminator (28) which provides a signal whose magnitude is related to the instantaneous frequency of the input signal. An integrator (29) is coupled to the discriminator output and feeds a tape recorder (30) which provides data to a computer 31. A spectrum analyzer (27) is coupled to the filter and provides a statistical frequency analysis of the flow velocities and indicates the extent of turbulence in the flow.
Patent GB-809516-A (GB)
Title: Improvements relating to automatic grinding machines
Inventor: RICHARDSON JAMES ALFRED
IPC: B24B49/04
Filed: 1956-06-07
Abstract: 809,516. Grinding. NUFFIELD TOOLS & GAUGES Ltd. Sept. 4, 1957 [June 7, 1956], No. 17579/56. Class 60. The feed of the grinding wheel 7 of an automatic grinding machine is stopped by actuation of one of a pair of cam-operated hydraulic piston-type valves 19, 20 connected by a mechanical linkage 43, 44 to a pivotal feeler gauge 40 which, upon the workpiece 6 being ground to a prescribed size, swings from its initial position in contact with the workpiece to a position on the other side of a diametral plane of the latter. The workpieces, such as poppet valves, are fed from a conveyer and successively advanced up to a stop 5 in a collet chuck 4 by a hydraulically-operated plunger 2, the feeler 40 being held in a raised inoperative position. The grinding wheel, which is carried on a spindle 8 belt-driven from a motor 10, is mounted on an inclined slide 11 reciprocable to and from the workpiece by a piston-andcylinder device 12 supplied with fluid pressure from pipes 13, 14 and a valve unit 15 containing the valves 19, 20 controlled by cams 30, 31 respectively. The cams are mounted on a shaft connected to a free-wheel device, the driven member of which can be released by actuation of a solenoid-operated pawl. Rotation of the cam 31 displaces a follower 45 and the linkage 43, 44 to lower the feeler about its pivot 41, Fig. 3, into contact with the workpiece, the opposite side of the follower displacing the valve 20 so that fluid pressure is connected by the pipe 13 to the cylinder 12 to feed the grinding wheel towards the workpiece. When the workpiece has been ground to the predetermined size, the feeler pivots through the diametral plane of the workpiece with consequential movement of the linkage 43, 44 and follower 45, and the valve 20 is set to supply fluid pressure to both pipes 13, 14, thus preventing movement of the slide 11 and providing a dwell until the cam 30 has rotated sufficiently to operate the valve 19 and connect pipe 13 to exhaust and return the grinding wheel to its starting position. The chuck 4 is then automatically opened and the workpiece ejected by a hydraulic mechanism 48. The feeler may be provided with a roller 42 for contact with the workpiece and its pivot adjusted to suit the size to be ground on the workpiece ; the solenoid actuated pawl can be manually disengaged to assist the setting-up procedure. The grinding wheel can be dressed by a diamond 52 making two traverses across the wheel surface and the reduction in diameter of the wheel compensated by axial adjustment of the piston of the device 12 by means of mechanism in a casing 17. The Provisional Specification describes the mechanism for this purpose as comprising a pawl-and-ratchet device set into operation by the insertion of a workpiece into the chuck and arranged after one revolution of the ratchet wheel to actuate through a valve a piston-and-cylinder device and pawl-operated gearing which feeds the diamond 52 into dressing position and adjusts the position of the piston of the device 12.
Patent GB-989434-A (GB)
Title: Light dimming adaptor for three-way lamps of the floor or table type
IPC: H05B39/06
Filed: 1961-05-15
Abstract: 989,434. Lamp holders. CALIFORNIA COMPUTER PRODUCTS Inc. May 15, 1961 [May 18, 1960], No. 17612/61. Heading H2E. A lamp-dimming adapter 10 comprises a female socket portion 12 for receiving an incandescent lamp and a male portion 14 for insertion into a three-way switching device (Figs. 2a . . . 2d, not shown), the male portion enclosing a rectifier 28 in its body insulation 42 one terminal 26 of the rectifier acting as a central contact for the male portion and its other terminal being connected both to an annular contact 24 of the male portion and to an inner terminal 20 of the female portion 12, outer screw contacts of the female and male portions 16 and 22 respectively being connected together. The three-way switching device which may be incorporated in a lamp fitting enables a lamp (not shown), which may be supplied via the adapter, to receive its supply either direct or through the rectifier.
Patent GB-861134-A (GB)
Title: Improvement in the manufacture of antistatic photographic films
IPC: G03C1/89
Filed: 1957-06-03
Abstract: 861,134. Photographic films. GENERAL ANILINE & FILM CORPORATION. June 3, 1957 [June 7, 1956], No. 17619/57. Class 98(2) The silver halide emulsion layer of a photographic film is coated with an anti-static layer consisting of a polyoxyethylene compound of the formula:- wherein R is an alkyl group of 6-18 carbon atoms and n is a whole number and at least 4, or consisting of a mixture of such a polyoxyethylene with a lesser amount of an anionic surface active agent. The anionic surface active agent may be sodium keryl benzene sulphonate, butyl- or isopropyl-naphthalene alkali metal sulphonates, lauryl sulphate or oleyl taurine.
Patent GB-1203184-A (GB)
Title: A card and counter type game
Inventor: KREMER THOMAS
IPC: A63F3/06
Filed: 1969-04-03
Abstract: 1,203,184. A card and counter game; marking. T. KREMER and J. R. HICKS. 3 April, 1969, No. 17628/69. Headings A6D and A6H. A game comprises a set of cards bearing a number of marks such as words or shapes, each mark having a plurality of characteristics e.g. colour, shape size number and position, chosen from a plurality sets of characteristics, and random selection means for selecting one characteristic (e.g. colour) from each of the above sets and a set of counters. The players are each given one card and a number of counters which the players place over a mark with a particular pair of characteristics when that pair of characteristics is displayed on the random selection means (e.g. dice or suitably marked spinning tops). The object of the game is for a player to cover a predetermined set of marks on his card.
Patent GB-650288-A (GB)
Title: Improvements in and relating to electric control systems
IPC: G05D1/00
Filed: 1948-06-30
Abstract: 650,288. Automatic control systems for aircraft. BRITISH THOMSON-HOUSTON CO., Ltd. June 30, 1948, No. 17648. Convention date, July 3, 1947. [Class 38 (iv)] [Also in Group XXXVIII] In a control system, power assistance is given in accordance with the deformation of a flexible member between the load and the system servomotor. An aircraft elevator surface is controlled, either manually or from a gyropilot, by means of a fluid-pressure servomotor through an elastic member which is deformed when stressed and which causes an associated electrical pick-off to apply a signal to the input of the amplifier supplying the servomotor. In the case of the manual control a power-boost is effected and the gyro-pilot may be disengaged by the movement of the control handle. As shown, the elevators 1 are positioned by the fluid servomotor 3 controlled by the selector valve 34 which is operated through amplifier 31. Under manual control, the effort applied to the handle, 2, is transmitted directly from the torque tubes 4, 11 to the cable 6, relative rotational displacement between the ends of tube 11 produces a signal at generator 13 and a second signal is similarly developed at generator 12 associated with torque tube 4. The generator outputs are applied in opposition to the amplifier 31. With the switch 58 open, the gyro-pilot 53 assumes control through the signal generator 48. In modifications, not shown, the switch 58 is automatically opened by movement of handle 2 beyond an adjustable limit and the tubes 4, 11 may be replaced by a single shaft, the longitudinal deformation of which is detected by a strain gauge.
Patent GB-292360-A (GB)
Title: Improvements in or relating to boxes
IPC: B65D5/52
Filed: 1927-07-04
Abstract: 292,360. Shirley, F. J. July 4, 1927. Boxes made from special blanks and convertible into stands; lids. -Relates to boxes of the type having a hinged lid with the back wall of the box constituting a swinging link having hinged connections with the lid and box body so that the lid can be folded back to support the box body in a tilted display position while means are provided to restrict the angular movement of the link away from the box body. According to the invention the angular movement of the back wall and swinging link 14 is restricted by one or more attachment flaps 25 formed or provided each on a wall of the box and connected at or towards their free ends to the link. As shown a flap 25 is provided at the end of each side wall 16 and is creased to provide two triangular portions, the portion 27 being secured by gumming, stitching. &c. to the wall or link 14. Flanges 11, 12, 13 around three edges of the lid 10 are secured together by lugs 30, and the flange 11 is creased diagonally at 32 so that the flanges can be collapsed flat on to the lid. The side walls 16 may have extensions 21 which are folded to interlock against the front wall 18, an extension 19 on which is folded over the extensions 21 and secured by a tuck flap 20 which lies on the bottom of the box body. In a modification the extensions 21 are dispensed with and the front end of the side walls are provided with flaps similar to the attachment flaps and secured to the front wall.