baber/WOPTO huggingface dataset:
Patent GB-1225771-A (GB)
IPC: F04D29/66
Filed: 1967-03-28
Abstract: 1,225,771. Silencers for gaseous flow. NUCLEAR DESIGN & CONSTRUCTION (1966) Ltd. March 28, 1968 [March 28, 1967], No.13977/67. Headings F1B and F1C. A sound absorbing device, e.g. in the intake duct of a circulator fan 5 of a gas-cooled nuclear reactor, comprises a perforated plate 8 covered by a wire mesh screen 9 and provided with one or more resonant chambers 11. The plate 8 is secured to the duct wall 3 by studs 11 and the resonating chambers may be formed either by partitions between the plate 8 and the wall 3 or, as shown, by open-sided boxes 11 secured to the plate. The plate 8 is formed in sections shaped to fit between guide vanes 4 of the fan 5. The wire mesh is of stainless steel and the plate 8 and bores 11 of mild steel.
Patent GB-1226778-A (GB)
IPC: E21D23/04
Filed: 1968-07-24
Abstract: 1,226,778. Advancing mine roof supports. G. ALACCHI. 24 July, 1968 [25 July, 1967], No. 35394/68. Heading E1P. In an advancing mine roof support system for inclined seams comprising a front series SF of chocks Al 4 , A 5  interconnected by jacks VA 4 , VA 5  &c., and a rear series SA of chocks B4, B5 interconnected by jacks VB4, VB5 &c., the two series SA, SF are coupled together by double-acting jacks VR4, VR5 as shown. Each chock is provided with a shield 28 of adjustable height and adjacent shields are interconnected by an accordion-pleated wall 32 to permit variations in spacing therebetween. For other minor details and method of advancement the Specification and remaining drawings, (not shown), should be referred to.
Patent GB-1226799-A (GB)
IPC: A23N17/02
Filed: 1968-04-30
Abstract: 1,226,799. Granulating foodstuffs. INSTITUT GORJUCHIKH ISKOPAEMYKH. 30 April, 1968, No. 20362/68. Heading B5A. Feed material for poultry and fish, and which has been ground on rollers, is granulated into spheres by the continuous deposition thereof on to the surface of an inclined rotary disc which is sprayed with liquid, e.g. water, containing microadditives and vitamins such as manganese and Vitamin "B", whereby the larger granules accumulate at and continuously spill over the circumferential wall 7 of the disc, the inclination of the disc to the horizontal being adjustable, from 30-50 degrees, whereby the granule size may be varied, and means being provided to prevent adhesion of the granules to the surface of the disc, e.g. a knife 14 or a release coating. The material is deposited from a hopper 9, via a screw 10 and shoot 11 sited on the trailing side of and below the knife 14 on the descending side of the disc, and the liquid is sprayed from one or more nozzles 5 adjacent the outlet of shoot 11. A further nozzle may be located above the upper descending part of the disc prior to the leading edge of knife 14. For producing larger diameter granules the inclination of the disc to the horizontal is decreased, Fig. 7 (not shown), and material is also deposited on the ascending side of the disc from an additional depositing arrangement (9, 10, 11) adjacent a further nozzle (5), additional nozzles (5) also being provided on the upper ascending part of the disc.
Patent GB-1232325-A (GB)
IPC: H02J13/00
Filed: 1969-07-18
Abstract: 1,232,325. Electric selective signalling. ELECTRICITE DE FRANCE (SERVICE NATIONAL). 18 July, 1969 [31 July, 1968], No. 36353/69. Heading G4H. A signalling and control apparatus comprises an automatic receiver responder in each of a number of field-stations, a receiver order-emitter in a central station, and a transmission system to link the central station and a selected fieldstation, the receiver responders comprising at least one signalling-tone emitter and associated modulator controlled by the condition of a controlled member in the field-station, and at least one operating order receiver for changing the condition of the member 7 on receipt of control signals from the central station, the signal and order being complementarily modulated. A selected field station is connected to the central station by means of a telephone system causing a tape-recorder 43 to emit the station address. Signals from the oscillator 55 then pass via line 16 and switch 59 to the central station. This switch is set to one of two positions depending on whether e.g. a particular transmission line or its spare is in use. The normal position is F where the oscillator signal is chopped by the multivibrator 61 and relay 60 into long or short pulses depending on the condition of a line fault detector D. The operator at the central station bears the signal and may cause a control signal to be emitted to switch in the spare line. The key 25 is pressed causing the relay 27 to switch in the oscillator 29 in the periods of silence of the incoming signal tone, thus generating a complementarily modulated order signal. The tuned amplifier 67 responds to the order signal and activates relay 68. The switching circuit 71 ensures that power is supplied to the integrating capacitor 85 only if relays 60 and 68 are responding to complementarily "chopped" incoming and outgoing signals. A threaded device 74 responds to the charge on the capacitor 85 to switch in the spare line. The output from oscillator 55 is then passed through the switch 59 which has responded to the line switch and now appears at the output 16 as a continuous signal. In an embodiment each field station has several switches I and associated fault detectors D. Each of these are investigated in turn by means of delay devices, their condition being shown by indicator lights at the central station. The switch positions are indicated by two frequencies corresponding to the two switch positions. Orders for switching are also transmitted on two further frequencies.
Patent GB-1251669-A (GB)
IPC: G01V5/12
Filed: 1968-11-08
Abstract: 1,251,669. Well logging apparatus. DRESSER INDUSTRIES Inc. Nov. 8, 1968 [Nov. 21, 1967], No. 52968/68. Heading G1A. A method or apparatus for use with a well logging device, Fig. 1, designed to eliminate the effects of varying thicknesses and densities of  mudcake 12 within a bore 11 comprises means for varying a 'first signal' (from a detector 16 spaced from a radio-active source 14) by means of a caliper signal (from a caliper 53), means for comparing the varied signal with a second signal (from a further detector 15) to derive an output signal representative of the difference  therebetween, means for summing said varied first signal and said comparative signal representative of the difference to provide a fuel output signal to be recorded, there being included linearizing means (e. g. a function generator) for said first signal at same stage. A detailed description of the surface electronics 18 fed by cable 17 and represented by boxes in Fig. 2 is disclosed. The Counting Rate Meter (CRM) circuits 22 and 24 each convert a train of pulses into an analogue signal while reducing the noise signal. The Caliper Compensator Circuit determines the amount of variation of the first signal and also the level at which any varying is to commence. The first signal is then amplified and inverted by Amplifier 26 and applied to Function Generator 28 (where the first signal is linearized) and to comparator 27. The comparator 27 has the effect of summing the second signal with the inverted first signal, and as the signals are of opposite sign they can be made equal by variable resistors (77), (76), Fig. 5 (not shown) to calibrate the signals; the effect of the presence of mudcake in the bore well will then cause the first and second signals to alter in value and provide an output proportional to mudcake thickness. The Summing circuit 29 combines and amplifies the output from the Function Generator 28 and from the comparator; the different densities of mudcake being allowed for by including a pair of mud weight switches (104), (115), Fig.7 (not shown) and including a further switch (93), Fig. 6 (not shown) in amplifier 26. The output from the Summing circuit is then recorded by 30 as a function of depth.
Patent GB-1252150-A (GB)
IPC: F24F11/04
Filed: 1968-12-12
Abstract: 1,252,150. Ventilators. E. M. VAN DE POL'S HANDELSONDERNEMING N.V. 12 Dec., 1968 [18 Dec., 1967], No. 59225/68. Heading F4V. A ventilator for mounting in a window pane, wall panel, or in a duct comprises an annular plastic casing 1 with a fixed grating 3, the lower half of the casing being closed by a division plate 2 and the upper half being closable by rotation (by means of cords) of a sealing plate 16, there being a circular valve plate 4 having blades 6 over half its circumference which is biased against movement caused by the air flow therethrough so that it remains stationary in a position of equilibrium. A spiral torsion spring 23 around the spindle 8 of valve plate provides the bias for the plate 4. Alternatively, or in addition, weights positioned off-centre of the plate 4 provide the bias action. The bias may be provided by a magnet. The ventilator may be used in walls and may connect a room to a vertical shaft from which air from each room in the building is exhausted by a fan. The venti-  lator may be used in vehicles.
Patent GB-1253044-A (GB)
IPC: H04R1/40
Filed: 1968-10-29
Abstract: 1,253,044. Loud-speaker enclosures; stereophonic systems. BOSE CORP. 29 Oct., 1968 [4 Dec., 1967], No. 51248/68. Headings H4J, H4R and H4X. A sealed cabinet of a loud-speaker system has a rear baffle inclined relative to a front panel and upper frequency sound is directed across the rear baffle in a beam having a rearward component perpendicular to the front panel and a lateral component substantially parallel to the front panel. A fluid-tight loud-speaker enclosure, Fig. 3, has rear baffles 33, 34 forming an angle of 120 degrees and on which are mounted full range loud-speakers 41, 42, 43, 44 and 45, 46, 47, 48 respectively. The front baffle has a single loudspeaker 31, also full range. Loud-speakers 42, 43, 44 are in series to form a first group, loudspeakers 45, 47 and 48 are in series to form a second group and loud-speakers 41, 46, 31 are in series to form a third group. The groups are connected together and the loud-speakers are co-phasally excited. The inside volume may be filled with fibreglass. Two such enclosures 15<SP>1</SP>, 16<SP>1</SP> (Fig. 2), each responsive to one channel of a stereophonic system, may be placed with the front baffles facing a listener and the rear baffles facing a reflecting wall. Alternatively, a single enclosure may be used, loud-speakers 41, 42, 43, 44 being connected to one stereo amplifier channel (Fig. 7) and loud-speakers 45, 46, 47, 48 being connected to a second stereo amplifier channel. A dividing baffle is then provided in the interior of the enclosure (Fig. 9, not shown). The loud-speaker 31 is connected to a centre output channel or is alternatively connected so that it receives a " sum " signal, e.g. by connecting its winding in series with windings of loudspeakers on the left and right rear baffles. Complementing means is associated with the system to establish a substantially uniform radiated power density for the system over substantially the entire audible frequency range. A complementing circuit 62, 63 (Fig. 6, not shown) is connected between the preamplifier and amplifier section of each channel (e.g. between the " monitor " and "recording" sockets, when the amplifier is switched to " tape monitor "). The complementing circuits each provide adjustable bass and treble lifts (Fig. 8, not shown), for the complementing function. In modifications the baffles may be tilted upward or downward. Different numbers and kinds of speakers may be used. The high frequency energy from the front loud-speaker may be attenuated electrically, mechanically or acoustically. There may be a single loud-speaker on each rear baffle and on the front panel, the one on the front panel being energized through an attenuating network that delivers about  the high frequency energy to the front loudspeaker, compared with that delivered to each rear loud-speaker.
Patent GB-1256606-A (GB)
IPC: H02K21/14
Filed: 1969-12-09
Abstract: 1,256,606. Magnetizing apparatus. ESAB Ltd. 9 Dec., 1969 [11 Dec., 1968], No. 60048/69. Heading H1P. [Also in Division H2] The exciting permanent magnet of a rotary electric machine rotor 36 is magnetized by connecting to a D.C. source a coil 37 in a magnetically soft iron or steel cylindrical pot 34 and lid 35.
Patent GB-1257597-A (GB)
IPC: H01L21/322
Filed: 1970-06-18
Abstract: 1,257,597. Semi-conductor devices. GENERAL ELECTRIC CO. 18 June, 1970 [30 June, 1969], No. 29739/70. Heading H1K. [Also in Division C1] A method of providing a passivating and gettering lead silicate glass on the surface of a silicon wafer comprises the steps of applying to the surface of the wafer a slurry comprising an oxide of lead and a volatilizable vehicle, volatilizing the vehicle, heating the silicon wafer in an oxygen-containing atmosphere to a temperature above the eutectic of the oxide of lead and silicon dioxide to fuse the lead silicate glass on the silicon wafer surface, and cooling the silicon wafer below the quenching rate so that the lead silicate glass can remove fast diffusing metal impurities from the silicon wafer. The volatilizable vehicle employed is an organic liquid consisting of carbon, hydrogen and oxygen, such as a glycol, alcohol, aldehyde, ketone, ether, or ester. The silicon wafer is heated to a temperature above 710 C. and is cooled to room temperature in a time greater than one minute to allow time for the metal impurities to travel to the glass layer.
Patent GB-1258646-A (GB)
IPC: G01S15/52
Filed: 1969-08-14
Abstract: 1,258,646. Ultrasonic Doppler systems. F. HOFFMANN-LA ROCHE & CO. A.G. 14 Aug., 1969 [30 Aug., 1968], No. 40607/69. Heading H4D. In an ultrasonic blood-pressure monitoring system for detecting, in the presence of noise, low FM deviation Doppler-shifted ultrasonic reflection signals due to the opening or closing of an artery in a body member 12 below an inflatable cuff 17, CW ultrasonic signals passing from transmit transducer 11 to receive transducer 13 both directly and by reflection produce an RF signal at the input of RF amplifier 31, a controlled leakage path 37 increases the RF input to amplifier 31 to a substantially constant total value sufficient to ensure low-noise operation of subsequent limiting and FM detector stages 33, 35, the FM detector 35 is responsive to signals having only a small frequency deviation (of no more than 2À5 x 10<SP>-4</SP>% of the ultrasonic frequency) to provide an audio output, and this output is passed to narrow band filter 61 which rejects signals other than those in an audio range corresponding to opening and closing of the artery under the cuff pressure. The leakage through path 37 via buffer stage 45 is controlled by feeding the RF amplifier 31 output to RF detector 39 to develop a bias voltage for diode 41 which with capacitor 43 acts as a variable shunt for the input signal of stage 45. AGC for the RF signal is thus provided and compensates for motion of the cuff 17, different artery sizes and varying attenuation of fat tissue. Filter 61 output is applied via audio amplifier 63 to amplitude threshold circuit 64. In use of the system, cuff 17 is inflated by air pump 19 and deflates slowly through bleed valve 16. When the cuff pressure drops sufficiently for the heart pulse to open the artery, Doppler signals from the artery trigger threshold circuit 64 and logic circuitry 67 opens valve 21 to register systolic pressure on mercury manometer 23. When the pressure drops further and allows the artery to remain open, circuit 64 switches back and valve 25 is opened to register diastolic pressure on manometer 27.
Patent GB-1258800-A (GB)
IPC: B65H83/02
Filed: 1969-10-07
Abstract: 1,258,800. Delivering sheets. S. & S. CORRUGATED PAPER MACHINER CO. Inc. 7 Oct., 1969 [27 Nov., 1968], No. 49158/69. Heading B8R. In a stacking mechanism, for box blanks, generally similar to that described in Specification 932,164, a barrier 15, which can be adjusted along the feed path toaccommodate different sizes of blanks, co-operates with a continuous belt conveyer 25 and lifting screws 12, (13) Fig. 2 (not shown), to form an underfed stack 14 the top portion 17 of which is removed periodically by a pusher arrangement 16. Rollers 51, 52 are mounted so that they are moved from an operative position as shown, in which they support an upper flight portion of the belt 25 when longer blanks are being handled, to an inoperative non- supporting position when shorter blanks are being stacked, this movement being automatically effected in unisonwithadjustment of the barrier 15. Further rollers (48); Figs. 3 and 4 (not shown), support the conveyer 25 in the region of the barrier, whilst oscillating rollers 92 (Fig. 4, not shown) engage the lowermost blank in the stack 14 and facilitate the entry of blanks into the stack, the rollers (48) and 92 being movable with the barrier 15. A hold-down slat 75, supported by a parallel arm linkage 80, 81, rests on top of the stack 14 and exerts a downward force to maintain pressure between adjacent blanks, and an oscillatory slapper bar 60 straightens the blanks as they rise in the stack.
Patent GB-1264424-A (GB)
IPC: G01N29/07
Filed: 1969-04-23
Abstract: 1,264,424. Ultrasonic inspection devices. BRANSON INSTRUMENTS Inc. 23 April, 1969 [23 May, 1968], No. 20728/69. Heading H4D. [Also in Divisions G1 and G4] In an ultrasonic pulse-echo system for measuring the thickness of an object or the depth of a flaw in the object, the shortest pulse transit time in a series of measurements is selected and indicated. This prevents spurious indications due to increasing pulse propagation times when the temperature of a coupling medium between the transducer probe and a hot test object rises. In the Fig. 1 embodiment, transducers 12 and 14 are coupled to test object W by a plastics block 16, and transducer 12 is periodically pulsed. The object entry surface echo received by transducer 12 "sets" bi-stable circuit 24 and the echo from the back surface or a flaw is received by transducer 14 and "resets" bi-stable 24. For the time the bi-stable is in its "set" state capacitor 38 is charged from constant current source 36 (with the current adjustable according to the material of the object being tested) to a voltage representing the pulse transit time. This voltage is applied via buffer stage 46 to capacitor 55 which stores the voltage between successive measurement cycles, capacitor 38 being discharged through shunt transistor 42 at the beginning of each cycle. To initiate a transit time indication, button 52 is pressed briefly to charge capacitor 54 to B+ voltage (i.e. a voltage greater than capacitor 55 would attain for the maximum transit time of interest). Capacitor 54 then proceeds to discharge, via diode 56 and transistor 58, towards the lowest of the voltages appearing on capacitor 55 in successive measurement cycles. Diode 56 prevents capacitor 54 voltage rising subsequently if the voltage on capacitor 55 should rise. A field effect transistor buffer stage 59 gives capacitor 54 a large discharge time constant of, e.g., several seconds for holding a transit time reading on taut-band meter 60. In alternative embodiments the two-transducer probe may be replaced by a single transducer probe (Fig. 3, not shown), and a digital indication of transit time may be given on numerical indicator tubes (Fig. 4, not shown), the transit time voltage analogue being converted to digital form for storage in a display register which is updated if the prevailing transit time is lower than the stored one. Reference has been directed by the Comptroller to Specification 1,124,898.
Patent GB-1267228-A (GB)
IPC: C23C22/46
Filed: 1970-08-06
Abstract: 1,267,228. Forming oxalate coatings on ferrous surfaces. PENNWALT CORP. Aug. 6, 1970 [Aug. 8, 1969], No. 37996/70. Heading C7U. A composition for forming oxalate coatings on ferrous surfaces comprises a solution (pH 0 to 2À5) of ferrous oxalate, containing a min, of 2À0% fluoride ion, e.g. alkali metal fluorides, or bifluorides, ammonium fluoride or bifluoride or HF. The solution may also contain sulphate ions e.g. ferric sulphate and the bath temperature is 130 to 200‹F. The pH may be adjusted by adding H 2 SO 4 , HF, HNO 3  or organic acids, e.g. oxalic acid.
Patent GB-1290121-A (GB)
IPC: B23F5/08
Filed: 1971-05-28
Abstract: 1290121 Gear-teeth-generating W HOFLER 28 May 1971 [15 June 1970 24 March 1971] 17756/71 Heading B3K In a gear-teeth generating grinding machine in which the work-table 1, Fig. 4, is connected with a nut 25 on a rotatable screw 6 adapted to be periodically rotated in opposite directions, the chip removal is regulated by two adjustable stops 28, 29, which co-operate with the nut or screw. Screw 6, Figs. 3 and 4, is driven from a gear-box 7 through a shaft 24 and' gearing 18, and the stops 28, 29, are adjustable by worms and wheels 32-35, the worms being driven by two motors actuated by press keys (41-44), Fig. 7 (not shown). Electric pick-ups 36, 37, Fig. 4, are provided to sense the positions of bolts 28, 29, and transmit signals to indicators (38, 39, 40), Fig. 7 (not shown). In a modification, each stop 28, 29, Fig. 5, is actuated by a wedge 46 displaceable by a bolt 48. In a further modification, nut 25, Fig, 6, is axially displaceably mounted on table 1, and screw 6 is axially fixed. In another modification, screw 6, Fig. 8, is mounted on table 1, as also is the drive gearing 55 for the screw.
Patent GB-1295590-A (GB)
IPC: F16L25/03
Filed: 1971-04-19
Abstract: 1295590 Pipe joints G WALZ 19 April 1971 [19 March 1970 29 Jan 1971] 24489/71 Heading F2G In a pipe joint, a sleeve 4 on a pipe 3 surrounds a flange 2 having troughs and ridges around its periphery on another pipe 1 and an inturned lip portion of the sleeve compresses a first elastically compressible sealing ring 6 and a second elastically compressible sealing ring 7 to fill the annular spaces inside the sleeve. The sealing rings may be of electrically insulating material, such as rubber or a synthetic substitute, and may in addition or alternatively render the joint insulated against sound and vibrations. In the embodiment shown, the sleeve 4, which is initially generally cylindrical, is welded to the pipe 3 and the inturned lip is formed after the sealing rings have been inserted between the pipe flange and sleeve portions, the pipes being placed on a centering mandrel and axially compressed. The joint exhibits some degree of flexibility but relative rotation about the pipe axis is inhibited by protrusions 9 on the sleeve interior. In a further embodiment, particularly suited to small bore or thin-walled pipes, the sleeve 4 is formed integral with the pipe 3. In another arrangement, the protrusions 9 are omitted and an extension (12) (Fig. 2, not shown) of the pipe 3 having a tapered edge (13) further compresses and radially retains the sealing ring 6. The flanged pipe end 1 may be formed in a single operation, preferably by cold deformation.