baber/WOPTO huggingface dataset:
Patent GB-1370874-A (GB)
Title: Polyphase code system
IPC: H04L27/233
Filed: 1973-03-19
Abstract: 1370874 Digital data processing; radar- HUGHES AIRCRAFT CO 19 March 1973 12992/73 Headings H4P and H4D A device for consecutively decoding groups of N<SP>2</SP> sequentially applied signals having N phase encoded states in each group comprises: means 142, 142a, 142b, 142c,... for storing N modified sub-accumulation signals; means 140, 140a, 140b, 140c,... for adjusting the phase of the modified signals to form sub-accumulation signals, the sum of which approximates the decoded value of a particular group; means for modifying the N sub-accumulation signals as a function of the difference between one group and the next; and means 138, 138a, 138b, 138c, ... for updating the stores to store new sets of modified signals. The means for modifying the signals comprises delay devices 132, 160 ... 166 and subtractor 134. Alternatively, Fig. 14 (not shown) separate subtractors (214) may be associated with each delay. Although shown as single units, each unit of the decoder processes inphase and quadrature components of a received phase encoded signal, the various connections being multiple ones. In operation, the transmitter unit of a radar system, Fig. 6 (not shown) transmits a series of RF pulses, each of which comprises N<SP>2</SP> elements encoded to N discrete phases according to the Frank Code, Fig. 3 (not shown). Encoding is provided by a phase shifter unit (70) which is controlled by a logic circuit (58). During the time between transmitted pulses, reflections from objects are received by the receiver unit, Fig. 7 (not shown), each reflector returning a similarly phase encoded signal which is demodulated in inphase and quadrature demodulators (92, 94). The operation of the demodulators are controlled by sampling pulses, and the resulting samples are stored in buffer stores (108, 110) before being shifted word-by-word into the decoding device (112) which applies the appropriate phase shifting to correlate one of the reflected signals, and de-correlate the others.
Patent GB-252393-A (GB)
Title: Improvements in and relating to centrifugal machines such as pumps and compressors
IPC: F04D29/44
Filed: 1926-05-21
Abstract: 252,393. British Thomson-Houston Co., Ltd., (Assignees of Moss, S. A., and Robinson, M. G.). May 23, 1925, [Convention date]. Casings.-The diffuser of a centrifugal pump or compressor consists of two spaced walls 8 which are so shaped that they first approach each other at the part 9 and are afterwards parallel. The gap formed by the parallel walls is continued by the plates 10, and it forms a free vortex chamber, the dimensions of the parts being chosen so that the minimum vortex angle is 20‹, while at normal load the angle is about 35‹. To reduce the diameter of the structure the walls of the plates 10 may recede from each other at the circumference to form the expanding section 11. In the modification shown in Fig. 2, the tip of the impeller 12 is narrow and the plates 13, which form the diffuser, are parallel throughout their radial depth; they are so close together that the vortex angle of the fluid is greater than 20‹.
Patent GB-563748-A (GB)
Title: Improvement in motorized lift truck
IPC: B62B3/06
Filed: 1942-09-16
Abstract: 563,748. Shaft couplings. TRIGGS, W. W. (Yale & Towne Manufacturing Co.). Sept. 16, 1942, No. 13081. [Class 80 (ii)] [Also in Groups XXXI, XXXIV and XXXVII] A lifting truck motor 112 drives a single steering wheel 109 through spur gearing 114, 115, a positive coupling 123, and chain gear 111. The coupling comprises a driving member 121 fixed on the shaft 116 and a driven member 128 integral with the sprocket 127 driving the chain 111, both members having holes adapted to receive pins 123 carried by a slidable spring- loaded member 124. When the pins pass through the holes in both coupling members, as shown, they lock them together ; when it is desired to disengage the coupling, the member 124 is drawn back, rotated slightly until the pins align with slight recesses 130 in the member 121, and then released, so that the pins engage in these recesses.
Patent GB-1037795-A (GB)
Title: Machine for cultivating and levelling soil
IPC: A01B49/04
Filed: 1964-03-31
Abstract: 1,037,795. Agricultural implements. K. NISHIMOTO. March 31, 1964 [May 1, 1963], No. 13149/64. Heading A1B. A machine for working the soil and sowing seeds and delivering fertilizer in one operation comprises cultivator blades 15, mounted on a shaft 13 driven from the tractor power shaft, which blades crush soil as it is raised by the plough 2 and feed the soil rearwardly where it is levelled by a plate 17. Fertilizer andd seeds are fed from hoppers 27, 28 to tubes 25, 26 mounted behind furrow openers 20, 21 and the seeds are covered by soil covering members 23 and pressure rollers 24.
Patent GB-131675-A (GB)
IPC: C22C33/06
Abstract: 131,675. Blackwell, H. A. July 30, 1918. Thermo-aluminic and like mixtures and metalextracting processes.-Carbon-free ferro-titanium is obtained from ilmenite, by the thermo-aluminic or analogous process, by preheating separately the ilmenite and aluminium or like reducing agent, mixing them, and setting the heated mixture into reaction. Instead of preheating both the ilmenite and the reducing agent, the ilmenite alone may be preheated before mixing with the reducing agent. Low-grade ilmenite may be employed.
Patent GB-1452686-A (GB)
Title: Apparatus for the loading and unloading of a lift car
IPC: B66B17/14
Filed: 1974-03-26
Abstract: 1452686 Storage systems INVENTIO AG 26 March 1974 [2 April 1973] 13247/74 Heading A4T [Also in Division B8]  Trollies 8 have platforms 12 raisable by inflatable bags 13, to engage a load and run on tracks 7 between a lift cage floor 3.1 and store shelves 4 over pivotable bridges 9. The drive for the trolley comprises a roller chain 15 constructed to resist buckling passing over chain wheels 16, 17 which can be driven in either direction by a motor 21 and through a guide 26 and a pivotable guide 27. The end elements 15À1, 15À2 of the chain engage an entrainment member 14 on the trolley by roller pins 15À4 entering slots 14À1, 14À2 and fingers 15À31 resting on members 14À3. Counterclockwise rotation of the wheels 16, 17 moves the chain and entrained trolley to the left, Fig. 1, until with the guide 27 moved to the position shown, the end element 15.1 disengages from the member 14 and moves through the guides 27, 26 while the element 15À2 remains engaged with the member 14 and due to the rigidity of the chain 15 extends out over the guide 27 until the trolley 8 is wholly on a shelf 4. After depositing the load reversal of the chain drive draws the trolley into the lift cage the guides 26, 27 guiding the end 15À1 of the chain into engagement with the wheel 16 and the member 14.
Patent GB-128999-A (GB)
Title: Improvements in Operating Mechanism for the Rudders of Aeroplane Flying Machines and other Aircraft.
IPC: B64C13/00
Filed: 1917-09-17
Abstract: 128,999. Blackburn Aeroplane & Motor Co., Booth, H., and Copley, J. W. Sept. 17, 1917. Steering.-A rudder-bar for aeroplanes and other aircraft is made in two portions each pivoted at its inner end and adjustable connected at its outer end to the rudder connexions, thereby providing adjustment for use by aviators having different lengths of leg. Fig. 2 shows a bar comprising two parts 1, 2 pivoted at 3 and connected by adjustable plates 7, 8 to the rudder connexions 5, 6 and to rubber or other resilient connexions 9, 10 secured to the nose of the fuselage. In place of the adjustable plates 7, 8, turnbuckles may be provided in the connexions 5, 6.
Patent GB-329486-A (GB)
Title: Improvements in india-rubber handle covers or hand grips for cricket bats, tennis racquets, golf clubs and the like
IPC: A63B49/08
Filed: 1929-04-30
Abstract: 329,486. Surridge & Co., Ltd., S., and Surridge, P. April 30, 1929. Handles.-In making a tubular rubber handle cover or hand grip for a cricket bat, tennis racket, golf club, or the like hav. ing near one or both ends, bands 2, 3 of indiarubber of a colour or colours different from the tube, the bands of coloured indiarubber are placed in position on the tube prior to vulcanization and the whole is subjected to a final vulcanization to produce the finished article. The coloured bands, besides enhancing the appearance of the covers, afford a means of identifying the bats &c. of different teams.
Patent GB-856067-A (GB)
Title: Improvements in or relating to optical viewing apparatus
IPC: G03B21/11
Filed: 1958-04-28
Abstract: 856,067. Projection viewing apparatus. ALOS, A. G. April 28, 1958, No. 13425/58. Class 97(1) An apparatus for viewing the projected image of any individual frame 20-59 of a block 225 of such frames (Fig. 4) reproduced on a film has two electric motors which control horizontal and vertical movement of the film so as to bring any desired frame of the block on to the viewing screen; a system of cams and relays is also provided whereby a predetermined sequence of frames may be caused to appear automatically on the viewing screen. The projection system is shown in Fig. 6, and comprises a lamp 191, reflector 192, and lens system 193, 194. A transport drum 179 causes the film to traverse from a cassette 181 to another cassette 182, passing between two glass guide plates 180. The projected image is reflected from mirror 196 and again from mirror 197 on to a matt screen 103 which is viewed through aperture 102. A mechanical linkage enables mirror 197 to be tilted by an adjustment knob 116 on the outside of the casing, so allowing vertical adjustment of the image on screen 103. The whole of the film guide means 179, 180, 181, 182 is mounted on a bar 175 secured to the upper end of a spindle 128, and can be moved bodily up and down by the spindle. The spindle itself is actuated by a reversible electric motor Mv, which at the same time rotates a shaft 140 carrying a set of cam discs, V3, V6 &c. The motor can be braked by a brake magnet Bv and braking members 165, 166, 167. A similar motor Mh drives the film transport means 179 to produce horizontal movement of the film. This motor is also provided with braking means, and also drives a set of cam discs. A chain and sprocket arrangement allows horizontal movement of the film to be made manually from another external adjustment knob 115. The forty individual frames numbered 20 - 59 in Fig. 4 are shown as arranged in eight columns, with five frames in each column. The forty frames are projected on to the viewing screen one after the other by "scanning" down each column in turn from top to bottom. This "scanning" operation is performed automatically by an electrical circuit controlling systems of relays which co-operate with the two sets of cams, the cams controlling the two motors Mv and Mh to give the required vertical or horizontal movements to the film in the required order. In Fig. 5 (not shown) the large frame blocks 225 are divided up into a hundred small frames, in a 10 x 10 arrangement. This requires a different programming arrangement of the relays and cams, and the system described can accommodate three such different programming arrangements, the required one being selected merely by pressing the appropriate button. The apparatus is intended for viewing films on which are photographed call charge meters in telephone exchanges, the separate meters corresponding to the small individual frames.
Patent GB-562376-A (GB)
Title: Improvements relating to bayonet joint fasteners
IPC: F16B5/10
Filed: 1942-09-24
Abstract: 562,376. Fastenings. SUMMERS, J. M. Sept. 24, 1942, No. 13462. Convention date, May 22, 1942. [Class 44] In a stud fastening for connecting parts 11, 13 of aircraft cowling &c., of the kind comprising a socket 10 and a swivel stud 14 with a cross-bar 16 adapted to engage recesses 21 in the top of 10, the latter is made of light metal and is covered on the wearing parts with a sheath 18 of hard metal, such as stainless steel. Specification 559,498, [Group XXII], is referred to.
Patent GB-332927-A (GB)
Title: Improvements in or relating to machines for stripping and separating bean pods from haulm
IPC: A23N15/10
Filed: 1929-04-30
Abstract: 332,927. Ryder, F. P. April 30, 1929. Sorting on inclined endless bands.-Pods and haulm of bean plants fall from rollers on to the upward run of an endless band 28 that is kept taut by a spring pulley 43 and is moistened by passing into liquid in a trough 45. The leaves adhere to the wet band and are carried away over its upper pulley, a scraper 46 being provided to remove any that do not fall over. The pods and the heavier parts of the haulm slip down the band on to the upward run of another endless band 59, this slipping being facilitated by agitation of the band given by flat-sided rollers. The second band which is moistened and agitated in a similar way to the first is provided with hooked projections by which the stalks are carried up and away while the pods fall downward on to a transverse conveyer 72.
Patent GB-847916-A (GB)
Title: Improvements in or relating to automatic steering systems
IPC: G05D1/02
Filed: 1956-05-02
Abstract: 847,916. Automatic steering-control systems. DUMPLETON, O. W. May 1, 1957 [May 2, 1956], No. 13503/56. Class 38 (4). In a system for automatically maintaining a body on a set course, a magnetic compass, besides controlling the steering, also controls the energization of an electromagnet influencing the magnetic field in which the compass operates. Automatic steering.-In Fig. 7 the cut-away card 95 of a magnetic compass for automatically steering a motor launch is so arranged that when the launch deviates in one sense from the desired heading light from a lamp 105 reaches a photo-transistor 108 by reflection, and when the launch deviates in the opposite sense the light beam is interrupted by the card. The desired heading is set by a wheel 91 frictionally rotating a plate on which lamp 105 and phototransistor 108 are mounted. With the switches of a remote-control unit 11, Fig. 8, in the positions shown a relay M/A is de-energized so that its central and lower contacts engage. Then when the launch deviates so that phototransistor 108 is not illuminated a relay HSR is de-energized so that, through a relay chain, an electric motor 22 is operated in the appropriate sense to correct the heading by adjustment of rudder 3. The rudder adjustment continues until motor 22 is stopped by the operation of a limit switch 57, but correction of heading continues until illumination of the photo-transistor, indicating that the desired heading has been exceeded, energizes relay HSR to reverse motor 22 which then runs until limit switch 56 is operated. The heading of the launch thus oscillates about the heading desired and the amplitude of oscillation is reduced by negative feedback from a relay SLR which energizes in one sense or the other an electromagnet 110 influencing the earth's magnetic field in the vicinity of the compass. Adjustment of the amount of feedback by a potentiometer 112, the voltage applied to the photo-transistor by a potentiometer 135, and the positions of the limit switches is provided to suit different weather conditions and supply voltages. Manual steering.-If switch 116 on remote control unit 11 is closed relay M/A is energized to disengage automatic control. The launch may then be steered in one sense or the other by push buttons 117, 118 which control reversible motor 22. Rudder movement is limited under these conditions by adjustable limit switches 55, 58 which when operated are reset by automatic reversal of motor 22 after a push button is released. Direct mechanical steering may be effected if a knob (not shown) is operated to release a clutch (not shown) between motor 22 and rudder 3 and to open a switch 42 in the supply to the automatic control system.
Patent GB-681430-A (GB)
Title: Improvements in reflecting microscopes
IPC: G02B17/08
Filed: 1949-05-20
Abstract: 681,430. Microscope objectives. DREW, R. L. May 9,1950 [May 20, 1949], No. 13592/49. Class 97 (i). A microscope objective comprises a concave spherical mirror and a larger concave non- spherical mirror, the two mirrors are arranged coaxially and face-to-face and the larger mirror is provided with a central aperture for the passage of light and the reflecting surface thereof is such that adjacent points on the base curve from which it is generated lie on different coaxial ellipses having one common focus and whose other foci lie progressively nearer to said common focus as the aperture is increased, the mirrors combining to give a strictly aplanatic image of an object located at said common focus. The larger mirror may be ellipsoidal so that the image formed by the mirrors of an object located between the foci of the ellipsoid is sub. stantially aplanatic. The spherical mirror R<SP>1</SP> and the aspherical mirror P may be formed by coatings as of aluminium on a transparent block 18; this block may be in one piece or formed of two or more pieces in optical contact. This block is formed with spherical entry and exit surfaces 19, 20 centred on the object V and image respectively. A normal incidence oil component 21, 22 is also used. The small mirror may also have a central aperture in which case part of each aperture has located therein an opaque stop to prevent sky flooding.
Patent GB-911168-A (GB)
Title: Improvements in or relating to impact drilling apparatus incorporating a flushing action
IPC: E21B21/00
Filed: 1960-04-19
Abstract: 911,168. Boring earth. GROSPAS, P. April 19, 1960 [April 18, 1959], No. 13686/60 Class 85. [Also in Group XXV] Impact drilling apparatus comprises a hollow drill string 3 through which flushing liquid flows, a bit 5 slidable on the string, a reciprocable head 6 which latches on to the bit when the latter is at the bottom of the hole, and a stop 8 which releases the head from the bit at the top of the bit's stroke. Fig. 1 shows the stop formed by the casing of the hole, and means 7 for reciprocating the head independent of the string. The head shown in Figs. 4, 7 is fixed to the string so that with the parts positioned as shown, the bit may be lifted by the string, a sleeve 15 biased by a spring 16 holding balls 14 in a groove 20a at the top of the bit, and the balls being engaged by a ring 13 attached to the string. At the top of the bit's stroke a rim 19 on the sleeve is engaged by the stop 8 permitting the balls to move from the groove and the bit to fall (Fig. 7). In modifications, the balls engage slots in the sleeve and the sleeve is inside the upper end of the bit. Fig. 15 shows apparatus having concentric bits 5e, 5i, either or both bits drilling according to the stroke of the string. The bit 5i slides on the string and coacts with a head 6i fixed to the string, the stop 8i being mounted on the head 6e for the bit 5e. The head 6e is slidably mounted on the string, and its sleeve 15e has rods 26 which engage the stop formed by a rim 19 on the sleeve 15i. The apparatus of Fig. 16 is actuated by changes in the pressure of the liquid within the string. The lower end of the string is formed by a bell 27 which encloses a valve seat 28 forming the upper end of a string extension tube 3i. Sliding on the tube 3i is a piston 31 carrying the latching head 6. Slight pressure on the liquid in the string forces a valve 30 on the seat and sinks the piston so that the head is latched to the bit. A reduction in the pressure within the string causes the piston to lift the bit which is released to fall when the rods 36 engage the stop 35 on the tube 3i. The piston continues to rise until it contacts projections 34 to lift the valve so that detritus is swept up the tube and string. In a modification (Fig. 18, not shown), the bell slides upon the string and the bit is lifted by increased air pressure in the string. In a further modification (Fig. 19, not shown), the fall of the bit is assisted by a spring and the cutting part of the bit is formed by scoops which are periodically closed. The flushing liquid flows up the strings, the flow of the liquid may be secured by gas lift, and the bits may be rotated.
Patent GB-1176513-A (GB)
Title: Improved hydraulic control system
Inventor: MCRAE EDWIN CYPRIAN
IPC: A01B63/10
Filed: 1967-03-23
Abstract: 1,176,513.  Fluid-pressure servomotor systems. E. C. McRAE. March 23, 1967 [March 25, 1966], No. 13686/67. Heading G3P. [Also in Division A1] In a hydraulic control circuit, pressure fluid is supplied through conduit 20 past control valve 12 to a servovalve 18 which moves to control the flow of fluid to the sump via conduit 22 and is arranged to enable small movements of the control valve to operate the control circuit. Movement of the control valve 12 to the left in the Figure opens conduit 27 to the supply conduit 20 so that the ram is supplied with pressure fluid through valve 28; closes conduit 29 to sump and also opens conduit 34 to sump via passageway 38 whereby pressure fluid acting on piston 19 of servovalve 18 moves this valve to close the sump conduit. Gradual return of the valve 12 opens conduit 34 to supply pressure through conduit 39 and at a certain pressure defined by the frictional resistance of the ring 21 on the piston 19, the servovalve 18 begins to open the exhaust conduit 22. The supply to conduit 27 is throttled at 24 and the conduit 29 to sump is opened at 25. Thus modulating valve 31 opens the sump conduit 22 an amount depending on the pressure remaining in conduit 27 which is in turn determined by the resistance to movement of the servovalve. In an embodiment the modulating valve 31 is dispersed with. The circuit can be used in a tractor power lift mechanism having draft control.
Patent GB-1095942-A (GB)
Title: Improvements relating to projectors with forward and reverse feed for a slide magazine
IPC: G03B23/04
Filed: 1966-03-28
Abstract: 1,095,942. Slide projector. ERNST LEITZ G.m.b.H. March 28, 1966 [April 1, 1965], No. 13689/66. Heading G2J. A projector with forward and reverse stepwise feed of a slide magazine includes a rotatable control disc unidirectionally rotated by a motor, and a magazine shift device pivotally mounted on an adjustable arm, said shift device being positioned for forward or reverse movement of the magazine by a first control means on the control disc, followed by the rocking of the arm to engage the shift device with a magazine feed sprocket, and a second control means on the control disc then slidably moving the shift device and the arm thereby causing the shift device to advance the magazine by one step. For forward feed of magazine 30, a switch 55 is opened and starter switch 52 is closed, thereby activating magnet 21. An armature 20 and spring 22 pivot a lever 16 to release a pawl 14 which engages a revolving toothed disc 9 which thereby turns the control disc 11. The shift device 33 is lifted by the track 26 on the control disc 11, such that a tooth 49 on the shift device 33 engages a rotatable magazine feed sprocket 50. A strip 28 on the control disc 11 then strikes a lever 57 thereby breaking the magnetic circuit and the lever 16 returns to the position of Fig. 1, moving a stop 18 from the path of the pawl 14. The pin 27 then moves along one side of the cam-piece 48 on the shift device 33 thereby turning the feed sprocket 50. Alternatively the direction of movement may be determined manually by the key 19, thereby by-passing the electromagnet 21. For reverse feed of the magazine, switch 55 is closed and on the strip 28 striking the lever 57 the circuit is not broken. The shift device 33 has turned, under the action of spring 22, until its arm 46 abuts a pin 45 mounted on the arm 16. The pin 27 now passes along the other side of campiece 48 thus turning the sprocket 50 in the reverse direction. A pin 24 on the control disc 11 operates a slide gate movement (not disclosed), and the motor 2 also drives a fan 4 for cooling.