baber/WOPTO huggingface dataset:
Patent GB-850582-A (GB)
Title: Improvements in and relating to electronic apparatus for reading symbols
Inventor: BAILEY CHRISTOPHER EDMUND GERV
IPC: G06V30/184
Filed: 1956-03-29
Abstract: 850,582. Automatic character reading. SOLARTRON ELECTRONIC GROUP Ltd. March 25, 1957 [March 29, 1956], No. 10010/56. Class 106 (1). Apparatus for reading symbols derives signals from elementary areas, applies them to binary storage devices which are set into one condition or the other according to the density or state of the elementary area; input leads from the devices being connected through logical elements to output leads representing the different symbols to be read, a predetermined voltage condition arising from the setting of the storage devices corresponding to the symbol being read. A flying spot scanner 20 with line and frame deflectors 21, 22 scans in vertical lines the black symbols on a white paper background 26. The signals generated by photo-cell 28 pass through clipper 33 to bi-stable storage devices 30 e.g. electronic triggers, ferrite cores or capacitor store devices. The o and x states apply respective negative potentials to output leads 31, 32. In the case of sensing numerals 0-9 there are one hundred devices 30 and two hundred leads 31, 32 and the latter are connected to the leads 34 of the output terminals through logical elements 35 according to the scanning code for the symbols. A mechanical switch distributer or electronic switch 38 applies a negative voltage to the leads 37 in succession, and a black scan signal applied simultaneously causes its storage device 30 to assume its x state. A suitable electronic switch 38 comprises two shift registers, one for units and one for tens, each comprising a cascade of trigger circuits (Figs. 6 and 7, not shown), the leads of the two cascades being interconnected through diodes. The unit register passes a negative signal at each step, the pulse at 9 resetting the unit register synchronizing the scan' and passing a pulse to the tens register. As shown in Fig. 5, non-uniformity of the scanning spot is compensated by an auxiliary photo-cell 58 receiving light from the scanning spot direct and connected through an amplifier to the grid of the C.R.T. 20. The scanning spot may have a high-frequency "wobble." Centring errors in the symbol are accommodated by adding conditions representing possible slight displacement. In a modified form of storage device 30 Fig. 14, a transistor 68 controlled by " and " circuits fed by the signals from the electronic switch lead 37 and the photo-cell 28 through diodes 70, 71 respectively, governs the charging of a condenser 75 which is discharged when a positive pulse from the frame flyback of the timebases renders a diode 79 conducting. All the stores are thus reset at the end of each complete scan. Logical elements used in the identification of the symbols are described, Figs. 8-12, not shown. The symbols may be sensed magnetically. Specification 850,581 is referred to.
Patent GB-760151-A (GB)
Title: Safety device for lifting appliances such as cranes
IPC: B66C23/90
Filed: 1954-04-06
Abstract: 760,151. Safety device for cranes. FAURE, A., and FAURE, A. April 6, 1954 [April 10, 1963], No. 10069/54. Class 78 (2). In a safety device for limiting the load 11 to be lifted by a crane 3 having a lifting cable 6 and a winch 7, the cable is led in a path which causes it to exert a lifting action on a counterweight 13 normally resting on a support 4 so that if the load exceeds a predetermined value the counterweight, and not the load, is lifted by the winding in of the cable on to the drum, such lifting of the counterweight being used to stop the drum. As shown, when load 11 is made too heavy the resultant tension in cable 6 raises weight 13 (load 11 remaining on the ground) so that said weight slides along rails 15 till it strikes a lever (not shown) to declutch the winch drum or a switch to cut-out the motor which drives the said drum. Alternatively, the weight may be secured to the actual end of the cable, the latter at some intermediary point being looped around a pulley block carrying the load 11.
Patent GB-477825-A (GB)
Title: Improvements in projection screens
IPC: G03B21/60
Filed: 1936-04-06
Abstract: 477,825. Projection screens. LENNARD, M. April 6, 1936, No. 10088. [Class 97 (i)] The surface of a projection screen consists of recessed stepped cells separated by narrow projecting barriers and occupying the major portion of the screen area. Fig. 1 shows square cells separated by barriers 13 and stepped to form surfaces 10, 11, 12. The width of the surface 11 may be slightly greater than that of the surface 12, and sound-transmitting holes 18, Fig. 4, may open through the sides of the cells from depressions or channels 17 in the back surface of the screen. The cells may be of triangular, hexagonal, circular, or other shape, or may be of irregular shape in random arrangement, and the steps may be curved as at 23, 24, 25 in Fig. 5. The screen may be produced by moulding, the mould being built up from similar separate elements locked in a chase ; it may be of rubber, to permit rolling, and may comprise sponge rubber 15 between surface rubber 14 and a fabric &c. backing 16. The screen may be flat, convex, or concave. According to the Provisional Specification, the stepped cells may be replaced by stepped projections.
Patent GB-1524152-A (GB)
Title: Detector circuits
IPC: H03K3/356
Filed: 1976-03-12
Abstract: 1524152 Transistor bi-stable circuits WESTERN ELECTRIC CO Inc 12 March 1976 [18 March 1975] 10098/76 Heading H3T In a circuit comprising six 3-electrode switching elements, e.g. FET's, Q1 ... Q6 arranged in the configuration shown, the first and second elements Ql, Q2 become conductive and non-conductive respectively or vice versa in dependence on the value of a signal to be detected applied to the node A, and the fifth or sixth element Q5, Q6 serves to render non-conductive the third or fourth element Q3, Q4 respectively when the first or second is conductive respectively. Assume initially that a clock signal at C is at 0 v. level and that clock signals at F, G at + 16 v., then transistors Q7 . . . Q12 are off and nodes A, B are floating. IfF, G briefly fall to 0 v. and then return to + 16 v., Q7 . . . Q 12 turn on briefly to change nodes A, B, C, D to one threshold above earth, and then turn off again to store this value at these nodes. If an input is now applied to node A to make it more positive than B (logical "I") then, when the clock signal at C goes to + 16 v. transistor Q1 conducts more heavily that transistor Q2 and the bi-stable formed by Ql, Q2 set to the condition Q1 on, Q2 off. Conduction of Q 1 turns Q6 off and node E floats at one threshold above earth. Node B is clamped to two thresholds above earth by Q4 (logical "0") and holds the gate of Q5 at this potential. As the potential at A rises towards two thresholds, Q3 turns on, and a further rise at A turns on Q5 clamping node A to node D thus turning off Q3 again. When A reaches +16 v., conduction through Ql ceases (logical "1" level at A). The levels at A and B are then sensed and the clock signal at C returns to earth potential to end the cycle. If input at A is at a logical "0" the converse occurs, i.e. Q2 is turned on to turn on Q6 and turn off Q4. Transistors Q11, Q12 ensure that nodes A, B and nodes D, E are clamped to the same potentials respectively should the thresholds of the transistors not all be the same.
Patent GB-137552-A (GB)
Title: Improvements in internal combustion and other engines
IPC: F02B75/26
Filed: 1918-06-19
Abstract: 137,552. Redrup, C. B. June 19, 1918. Link-work.-Driving-gear for internal-combustion and other engines having cylinders disposed parallel to a central driven shaft b comprises oppositely-inclined crank pins f, upon which are mounted a pair of oscillating members g. In a six-cylinder engine, each member has three arms i connected to the pistons of alternate cylinders. The arms may be provided with ball ends which engage recesses in the pistons, or the ends of the arms may each slide in a ball joint. To restrain the movements of the pistons, one of the arms of each oscillating member g may be fitted with a roller c<1> which runs in a slot in the corresponding piston.
Patent GB-418985-A (GB)
Title: Improvements in or relating to rackets for lawn tennis and other games and the manufacture thereof
IPC: A63B49/02
Filed: 1933-04-05
Abstract: 418,985. Making wedges for tennis rackets. NASH, R. J., Nelson Passage, High Street, Birmingham. April 5, 1933, No. 10167. [Class 145 (i).] A wedge for a tennisracket frame is made from a billet comprising pieces of wood glued together as in Fig. 1; cuts are taken in the billet as shown to produce arcuate surfaces 2, 2a, 2b and feather edges 9, 10, 11 on the wedge. The pieces of wood are so arranged that the intercutting of two cuts to form a feather edge is in line or substantially so, with the grain at that point. Two wedges may be cut simultaneously as in Fig. 2. Apparatus for making the cuts comprises a carriage 21, Fig. 5, having centres 20 between which the billet 18 is mounted ; the carriage 21 is fed by hand along a guide 22 past a rotary end cutter 26 to produce the cuts, the billet being rotated to the appropriate position before each cut by means of a setting head 27. A wedge integral with a handle 8 may be cut as in Fig. 3; apparatus for this purpose comprises a carriage 31 in which the billet 30 is mounted ; to produce the top cut, the carriage 31 is fed by hand along a guide 33 past a rotary cutter 36. The side cuts are effected by feeding the carriage 31 along a guide 32 past the cutter. In all cases the billet may be of such length as to provide a number of wedges by subsequent division across its length. Specifications 418,982 and 418,983 are referred to.
Patent GB-1379235-A (GB)
Title: Covered hose
IPC: B29D23/00
Filed: 1971-04-21
Abstract: 1379235 Hose pipe DUNLOP Ltd 17 April 1972 [21 Qpril 1971] 10340/71 Heading F2P A reinforced hose is made by forming a core which includes unvulcanized vulcanizable material, providing a permanent cover of thermoplastics material, the temperature of melting of the thermoplastics material being above the vulcanization temperature of the vulcanizable material, smoothing the outer surface of the cover by passage through a die, and vulcanizing the vulcanizable material. As described the unvulcanized vulcanizable material 11 is extruded on to a nylon mandrel and passed through a sizing die prior to cooling in a water cooling unit and a freeze box. The frozen core is braided with textile and a nylon cover 13 of about 0À15 inches thickness is extruded thereon. The nylon has a M.P. of 186‹ which is greater than the vulcanization temperature of the material chosen as a liner, and the hose is therefore vulcanized in a fluidized bed without further external support. The hose may be reinforced with spirally or longitudinally wrapped woven or non-woven textile or braided wire. The thermoplastic cover may be applied by extrusion dripping molten material on the hose core (preferably after preheating of the core to 100‹ C.) and drawing through a die, or by spraying powder in an electrostatic field, heating, and passing through a die.
Patent GB-1154308-A (GB)
Title: Improvements in or relating to Adjustable Honing Tools for Bores
Inventor: NAGEL PETER
IPC: B24B33/08
Filed: 1967-03-04
Abstract: 1,154,308. Honing. P. NAGEL. 4 March, 1967, No. 10358/67. Heading B3D. An adjustable honing tool for bores comprises segmental cups radially guided relatively to a tool body which is connected to a hollow drive rod of a honing machine, said segmental cups being adapted to carry a honing lining and being radially outwardly displaceable by a multiple cone type spreader axially guided on the tool body and acted upon by a presser rod guided in the drive rod of the honing machine, said tool body having a rectangular cross-section in the region of the segmental cups, and carrying two segmental cups each substantially enclosing one half of the tool body, said segmental cups also being recessed to correspond to the rectangular cross-section and being directly radially displaceable, whilst the multiple cone type spreader axially guided in a longitudinal bore of the tool body presses against a base surface of the guide recesses of the segmental cups by means of two adjusting bars radially guided in two longitudinal slots in the tool body. Thin-walled cup portions 29 carrying honing linings 30 are secured by screws 31 to segmental cups 3. 4; locating pins 32 are provided. The cups 3, 4 are mounted on a square portion 2 of the tool body, and are restrained axially by a shoulder 8 on the head 1 of the tool body and by lugs 9 projecting from the free end of the tool body and engaging recesses in the cups. An expander 14 axially movable in a bore 13 in the tool body has cylindrical portions 15, 16 and cones 17, 18 co-operating with inclines 19, 20 on adjusting bars 22, 23 radially displaceable in slots 21 in the square portion 2 and bearing against the cups 3, 4. The tool is collapsed by springs 12. The expander is operated by a pin 25 in the head 1 of the tool body; a return spring 26 is supported by a disc 28 retained by a spring ring 27.
Patent GB-579551-A (GB)
Title: Improvements in and relating to the manufacture of sheets, tubes and other articles from polystyrene
IPC: B29C65/02
Filed: 1944-05-30
Abstract: Articles are formed from oriented polystyrene foil by welding together superposed laminations by means of heat and pressure applied by a mould, the pressure being maintained continuously during the whole of the heating and at least the start of the subsequent cooling period.  Maintenance of the pressure prevents de-orientation and embrittling of the polystyrene.
Patent GB-1468839-A (GB)
Title: Device for measuring the angular deviation of a reflected laser beam using heterodyne detection
IPC: G01S17/06
Filed: 1974-03-08
Abstract: 1468839 Optical tracking SOC ANON DE TELECOMMUNICATIONS 8 March 1974 [4 April 1973] 10449/74 Heading H4D An infra-red laser tracking device comprises means for "heterodyning" on the extended surface of a photo-voltaic detector two incident beams comprising a focused, incident Doppler shifted reflection beam from the irradiated target, superimposed on an internally produced spatially and temporarily modulated incident beam at the transmitting laser frequency, whereby the angular deviation from the optical axis of the reflection beam may be detected from variations in the Doppler beat frequency produced by the heterodyning process on the detector surface. Laser 1 transmits beam 2, which is reflected on planar mirror 3, which reflected beam 4 is then reflected by semi-silvered mirror 5 towards suitable reflectors placed on the target. The reflected beam propagates through mirror 5, and optical elements where it is focused, so that on passing through semisilvered mirror 10 it falls on a single point on the surface of photo-voltaic detector 11. Laser 12 generates a beam at the same frequency as laser 1, which beam is collimated by optical elements 14 and 15. The resulting parallel beam passes through diaphragm 17 and a disc modulator 18 comprising alternately transparent and opaque sectors which are caused to undergo a circular translation and the image thereof is caused to fall via beam splitter 10 on the surface of detector 11 (see Fig. 2). The reflected beam 7 is Doppler shifted so that when the spot 30 (Fig. 2) is illuminated by beam 32 the detector Fig. 2 produces an output signal at the Doppler difference frequency, between the reflected light signal and the internal light signal. The difference frequency is a function of the radial velocity of the target. The circular translation of the modulator image 31 produces an equivalent situation to the target describing a circle on the image of the modulator which when the target is on the optical axis, i.e. is not angularly deviated, the difference frequency is produced in a constant frequency series of pulses. When the target is off-axis, the circle described on the modulator disc is eccentrically disposed, and difference frequency pulses detected at a computer 27 are frequency modulated, the deviation and modulating frequency of which define the polar co-ordinates of the off-axis beam reflected from the target, and which are converted in computer 27 to Cartesian co-ordinates to be used in, e.g. a follow-up system which controls the direction of the transmitted beam 6.
Patent GB-1438645-A (GB)
Title: Hydrocarbon conversion process
IPC: B01J35/10
Filed: 1973-03-05
Abstract: 1438645 Hydrodemetallization of residual oils SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ BV 5 July 1973 [7 July 1972 5 March 1973] 31966/72 and 10528/73 Heading C5E In a process for the catalytic conversion of residual hydrocarbon oil the oil is first demetallized and subsequently catalytically converted; the demetallization is carried out by contacting the oil with hydrogen in the presence of a catalyst comprising one or more metals having hydrogenation activity on a carrier and meeting either the requirements A or the requirements B-A (1) 10À0-0À15v#p/d>3À5- 0À02v in which p is the specific average pore diameter in nm., d is the specific average particle diameter in mm., and v is the percentage of the total pore volume that consists of pores with a diameter larger than 100 nm., (2) v is smaller than 50, (3) the nitrogen pore volume is larger than 0À6 ml./g., (4) the surface area is larger than 150 m.<SP>2</SP>/g., and (5) p is larger than 5. B (1) p/d>10À0-0À15 v, (2) v is smaller than 50, (3) the total pore volume is larger than 0À4 ml./g., and (4) the surface area is larger than 100 m.<SP>2</SP>/g. The demetallization can be carried out at 300 -450 C. and 75-250 bar using a catalyst comprising (a) Mo, V or W and/or (b) Ni or Co on an alumina, silica or silica-alumina support. The catalytic conversion processes envisaged are catalytic cracking, hydrocracking and hydrodesulphurization.
Patent GB-527244-A (GB)
Title: Improvements in apparatus for producing electric sparks for use in spectrum analysis
IPC: G01N21/67
Filed: 1939-04-05
Abstract: 527,244. Spark gap apparatus. ZEISS, C. [Firm of]. April 5, 1939, No. 10571. Convention date, April 11, 1938. [Class 39 (i)] In spark producing devices for use in spectrum analysis a number of gaps are connected in series to be traversed by the same discharge current, some at least of these gaps being bridged by high-resistance conducting means such as ohmic resistances, condensers or impedances. The gap 9 having electrodes of metal to be examined has in series therewith bridged gaps 10, 11 and a gap 12 with rotary interrupter. As it may be desirable to subject a gap to preliminary electric discharges before using for analysis two gaps such as 9 may be used, one being treated while the other is in use. To prevent damage to the bridging resistances 13, 14 overload safety means may be arranged in parallel with the resistances. To initiate the discharge by giving a high break down voltage across the gap 9, the gaps 10, 11 may be temporarily short circuited.
Patent GB-995549-A (GB)
Title: Wear reduction additives for ammunition cartridges and the like
IPC: F42B5/16
Filed: 1962-03-20
Abstract: 995,549. Ammunition cartridges. MILITARY TRAINING DEVICE CO. A.B. March 20, 1962 [March 22, 1961; May 29, 1961 ; Nov. 20, 1961], No. 10576/62. Heading F3A. A fixed round of ammunition comprising a projectile 28, a cartridge case 20 and a propellant 24 contains a first substance comprising zinc and/or one or more zinc compounds intended to form a temperature and/or erosion resistant surface on the gun barrel, when the round is fired. The zinc compounds may be one or more of the following: zinc oxide, zinc sulphide, zinc carbonate, zinc phosphate, zinc fluoride, zinc chromate, zinc silicate, zinc oxalate, zinc arsenate. The first substance may be dispersed throughout the propellant or may surround the propellant in various ways, e.g. by attachment to the propellant or to the inner surface of the case. The first substance may be dispersed in or form a coating on a layer of a second substance which contains carbon as in Specification 950,608. Specification 950,607 and 950,609 also are referred to.
Patent GB-551283-A (GB)
Title: Improved method and apparatus for sealing electric lamp bulbs and similar devices
IPC: H01J9/40
Filed: 1941-08-20
Abstract: 551,283. Making electric incandescent lamps. BRITISH THOMSON-HOUSTON, CO., Ltd., Aug. 20, 1941, No. 10588. Convention date, Aug. 21, 1940. [Class 39 (ii)] In a lamp making machine of the type comprising a rotatable turret, e.g. as described in Specification 232,953, [Class 39 (ii)], which passes partly made lamps through a plurality of stations at which exhausting, gas-filling, and tipping-off operations are carried out in sequence, tipping-off is effected by heating the exhaust tube while subjecting it to tension or torsion, and utilizing the movement arising through stretching or twisting of the tube as the glass softens to effect sealing. The exhaust tube 13 is held in a compressed rubber grip 10 whilst upward pressure is applied to the lamp body by a spring- urged plate 125 or clip engaging the seal. Heat is applied by burners to the tube, and movement of the lamp as the glass softens is arranged to close a switch in the circuit of a soleniod which controls a clutch whereby driving connection is established to a pair of jaws adapted to grip the walls of the tube to effect sealing, and if desired severance of the lower part of the tube. In a modification, Fig. 8, the upper part of the lamp is gripped by a suction cup 142 to which torsion is applied by a gravity-loaded shaft 157, the torsion being adjusted so that as the glass softens, the stem is twisted to a sufficient extent to effect sealing. Specifications 404,566, 406,185 and 428,802 also are referred to.
Patent GB-876759-A (GB)
Title: Cigarette machine feeding apparatus
Inventor: BEIER GERT
IPC: A24C5/356
Filed: 1960-03-25
Abstract: 876,759. Feeding cigarette - machines. TABAKUND INDUSTRIEMASCHINEN DRESDEN. March 25, 1960, No. 10590/60. Class 78 (1). Twin cigarette hoppers 1, 2 are separated by wall 20 and the cigarettes are discharged therefrom by a single roller 5 in units, each unit being two cigarettes spaced for the insertion of a double tip. The hoppers are fed alternately by means of respective frames 11, 12 pivoted at 9 and geared together by gearing 14, 16, 15. Operation.-An operator takes a tray 28 full of cigarettes and places them on frame 12 positioned as shown. He inserts band 23 (not shown) to act as a base to support the cigarettes and then grasps handle 13 and swings the frame 12 (with tray) into the vertical position where it is held by springs 21, and removes band 23 (not shown) to allow the cigarettes to fall into hopper 2. Simultaneously, due to the gearing, frame 11 has swung down to the inclined position. The operator removes the empty tray thereon and replaces it with a full tray, and recommences the cycle of operations.
Patent GB-1286584-A (GB)
Title: Centrifuge
IPC: B04B3/02
Filed: 1970-03-05
Abstract: 1286584 Centrifugal strainer ERNST HEINKEL MASCHINEBAU GmbH 5 March 1970 [5 March 1969] 10600/70 Heading B1D A centrifugal strainer comprises a perforate cage 16 mounted on the end of annular shaft 4 and lined by a flexible filter sleeve 17 whose ends are respectively secured to the end flange 19 of the cage and to a separate base 7 of the cage, base 7 being mounted on central shaft 6 and carrying end cover 23, by connecting bolts 22, which sealingly engages flange 19 to close the cage. Shafts 4, 6 are keyed together for rotation but to allow relative axial movement. After centrifuging and possibly cake-washing in the position shown, rotation is maintained while shaft 4 and its supporting bush 2 are moved rightwards by pneumatic or hydraulic means (Fig. 1, not shown) to the chain-dotted position. Base 7 and cover 23 remain in the full-line position, so the sleeve 17 is thus turned inside out, discharging the filter cake by combined inversion and centrifugal force. The assembly is rotated by a belt drive to shaft 6. Cover 23 has a sealing ring 31 which engages flange 19 when the cage is in its left hand position. Slurry inlet 26 and wash liquid inlet 28 extend through aperture 25 in the cover.