baber/WOPTO huggingface dataset:
Patent GB-1518328-A (GB)
Title: Automatically centred pulsed radar
IPC: G01S7/292
Filed: 1975-08-05
Abstract: 1518328 Automatic frequency control TEXAS INSTRUMENTS Inc 5 Aug 1975 [6 Aug 1974] 32666/75 Heading H3A In a pulsed non-coherent radar having a plurality of bandpass filters of various bandwidths for the I.F. signals, the actual centre frequency of a preselected one of the filters is detected, and the frequency of the I.F. signal is adjusted to this actual frequency. Application of a trigger pulse to the transmitter magnetron 18 also triggers monostable circuit 22 to provide a pulse which conditions gate 24 to connect the output of mixer 44 to frequency discriminator 28. Inputs to mixer 44 are provided by local oscillator 40 and by a pickup 41 which couples in part of the transmitted signal, so that the mixer output is at the i.f. The output from the discriminator 28 is fed to a sample and hold circuit 34 which is triggered by a pulse derived from a further pickup 31 coupled to the transmitted signal. The resulting output from the sample and hold circuit 34 is applied to the local oscillator to maintain the i.f. signal at the required frequency irrespective of drift in the magnetron frequency. The received signal at aerial 2 is also mixed with the local oscillator signal in a further mixer 6 to provide an i.f. signal which is fed via bandpass filters 10 to a detector 14. In order to ensure that this i.f. signal is at the correct centre frequency of the filters 10, the i.f. signal is picked-up by coupler 19 and is passed by gate 24 during the time when no output pulse is provided by monostable 22. During this time, the signal represents the noise output from the i.f. path 8, 10, 12. The output from discriminator 28 during this period is fed via integrator 30 to adjust the tuned circuit in the discriminator so as to modify the control signal to the local oscillator 40 during the next period when monostable 22 switches the gate 24 to couple the output from mixer 44 to the discriminator. The. time constant of integrator 30 is such that it does not respond to the control signal for the local oscillator 40.
Patent GB-209261-A (GB)
Title: Improvements in or relating to busks or stiffeners for wearing apparel
IPC: A41F1/04
Filed: 1922-11-30
Abstract: 209,261. Moakes, A. C. Nov. 30, 1922. Busk fastenings.-The slots a, b in the plates on the upper part of one of the flexible strips of a busk fastener for corsets, &c., are reversely moved to the slots c, d in the lower plates to lock the studs in their slots against lateral and endwise movement such as occurs when in use. The slots a, d at the ends may have locking claws, as shown, to guard further against lateral unlocking movement.
Patent GB-1221548-A (GB)
Title: Improvements in or relating to parachutes
Inventor: MITCHELL JOHN ROTHWELL
IPC: B64D17/34
Filed: 1968-07-10
Abstract: 1,221,548. Parachutes. G. Q. PARACHUTE CO. Ltd., [trading as RFD-G.Q. Ltd.]. 28 May, 1969 [10 July, 1968], No. 32792/68. Heading B7G. A parachute adapted to be projected from a load 15 which it is to support comprises main and auxiliary canopies 13 and 12 respectively, rigging lines 14, and a handle 26 for manually projecting the parachute from the load 15. The main canopy is contained within a pack 11 attached to a harness and wrap 27, 28; the auxiliary canopy is held on to pack 11 by elastic band 16 whose ends (17), (18) are interlocked with bights in riser 22, Fig. 2 (not shown). To deploy the parachute, it is thrown from harness 27 by the user 15, the bights in riser 22 releasing band 16 and hence auxiliary canopy 12 when riser 22 becomes taut. Canopy 12 supports the load until a third bight (19) in riser 22 releases a lock on pack 11 and the main canopy is deployed. Elastics may be provided to assist opening the auxiliary canopy.
Patent GB-405432-A (GB)
Title: Improvements in brush holders
IPC: A47L13/51
Filed: 1932-11-21
Abstract: 405,432. Brushes. LILLY, J., 31, Waverley Road, Small Heath, Birmingham. Nov. 21, 1932, No. 32805. [Class 19.] A brush holder such as are used in hearth, furniture and crumb brush sets comprises the usual brush and cylindrical holder, Fig. 1, characterized by a wire spring, Fig. 2, passing round the brush handle and frictionally engaging the sides of the brush holder. In this way the brush can be retained in any required position in or out of the holder for use. The holder may be cylindrical or elliptical. Also the handle may be elongated if desired and in a modification, Fig. 5, the brush cover may be made to slide inside another cover.
Patent GB-361568-A (GB)
Title: Improvements in and relating to sheet metal boxes
IPC: B65D43/24
Filed: 1930-11-01
Abstract: 361,568. Stays for box lids. WAGSTAFF, H. and READS, Ltd., 21, Bridgewater Street, Liverpool. Nov. 1, 1930, No. 32875. [Class 65 (i).] A metal box having a hinged lid 1 is provided with a clip 4 hinged to the lid and adapted as the lid is opened to catch under the rim 6 and hold the lid in an upright position. The clip 4 is preferably in the form of a curved strip with a hook 7 at the end, and is folded over at 9 to accommodate a pivot pin 8, which is slipped through indentations in the box lid.
Patent GB-832430-A (GB)
Title: Dichloroxylenol acetate and antifungal formulations containing it
Inventor: MARTIN BERNARD KEAT
IPC: C07C69/63
Filed: 1957-10-22
Abstract: The invention comprises 1-acetoxy-2,4-dichloro-3,5-dimethyl benzene, useful as an anti-fungal agent, and a process for its preparation by reacting 1-hydroxy-2,4-dichloro-3,5-dimethyl benzene with acetic anhydride, or an aqueous mixture of sodium hydroxide and acetic anhydride or acetyl chloride in the presence of pyridine.  Examples are given.ALSO:An antifungal formulation comprises 1-acetoxy - 2,4 - dichloro - 3,5 - dimethyl benzene together with a solid or liquid inert carrier or a mixture of two or more thereof.  In the examples compositions are described containing 1, 2 or 3% active compound together with (4) magnesium stearate and talc, (5) alcohol and acetone, (6) cetomacrogol emulsifying wax, liquid paraffin and water, and (7) polyethylene glycol.
Patent GB-738145-A (GB)
Title: Radio transceiver circuits
IPC: G01S13/75
Filed: 1953-11-27
Abstract: 738,145. Radio signaling; transistor superregenerative circuits. RADIO CORPORATION OF AMERICA. Nov. 27, 1953 [Dec. 3, 1952], No. 33009/53. Classes 40 (5) and 40 (6). A transistor oscillator is powered by D.C. energy derived by a resonant circuit and a diode from incoming radio waves and oscillates at a different frequency therefrom, means being provided to transmit the generated oscillations. The oscillator may operate intermittently in a super-regenerative receiver circuit. In one embodiment, a modulated carrier wave of frequency f is received from a transmitter 10, Fig. 1, by a common aerial circuit 16, 17 and the tuned circuit 18, rectifier 21 producing a demodulated signal for headphones 22. The D.C. component of the rectified signal is developed across condenser 27 connected in series with choke 26 to the rectifier output and applied through a modulating microphone 45 to energize the transistor transmitter oscillator 31 which has a frequency-determining circuit 40, tuned to a frequency f2. The transmitted carrier may be received at a further station 25. In a second embodiment, the switches 56, 60, Fig. 2, connected by link 61, form a sendreceive switch. In the send position, the headphones 22 are out of circuit and the arrangement is similar to that of the first embodiment, the resistance 59 being shunted across the baseelectrode biasing resistance 36 so that the transistor produces continuous oscillations. In the receive position, the resistance 59 is cut out so that the transistor oscillates intermittently to form a super-regenerator, the headphones being substituted for the microphone. In another embodiment, which may form a radar responder or the like, there is no audio signal modulating or reproducing means, and the modulation signal of the received carrier of frequency f1 modulates the transmitted carrier of frequency f2 when the transistor is energized by the rectified receiver carrier, Fig. 3 (not shown).
Patent GB-618700-A (GB)
Title: A new aluminium base alloy
IPC: C22C21/12
Filed: 1946-11-09
Abstract: An aluminium base alloy has the following composition: Cu 1.50-5.50 per cent, Cr 0.50-2.00 per cent, Mg 0.60-3.20 per cent, Fe 0.55-2.00 per cent, Ti 0.01-4.50 per cent, Si 0.01-2.00 per cent, Al the remainder which may contain C as an impurity.  The total of the Cu and Mg contents always exceeds twice the Cr content and the Mg content always exceeds 1.0 per cent unless the Si content is below 0.50 per cent.  The alloy may contain not more than 1.75 per cent of Mn which is always less than the Cr content. Up to 1.50 per cent of Co may be included when Mn is absent or does not exceed 0.25 per cent.  The alloy may contain one or more of Sb, Sn, Ca, Be, Ni, Bi, Cd, Nb, La, Pb, Mo, Ga, Ag, Ta, Te, Tl, Th, B, W, V, Yt, Zn, Zr up to 0.60 per cent of each and up to 1.20 per cent in total but so that the Ni content is always less 0.50 per cent unless the Mn content is less than 1.0 per cent, and the Pb content is below 0.20 per cent and will be absent unless the Cr content is above 1.0 or the Si content below 0.40 per cent.  One or more of Na, K, Ba, Sr and P may be present up to a total of 0.30 per cent.  The alloy may be used as a sand casting or a die casting or worked part which is given an ageing treatment up to 250 DEG C. for a period not exceeding 30 hours.  The ageing treatment may be preceded or replaced by a solution treatment at a temperature not exceeding 540 DEG C. for a period not exceeding 36 hours.
Patent GB-1321271-A (GB)
Title: Cement evaluation logging utilizing reflection co-efficients
IPC: E21B47/00
Filed: 1970-07-09
Abstract: 1321271 Acoustic inspection devices SCHLUMBERGER INLAND SERVICES Inc 9 July 1970 [9 July 1969] 33438/70 Heading H4D The integrity of the cement packing between a well casing and surrounding earth formations is investigated by transmitting acoustic energy so that a component propagates from the well bore into the casing and earth formations, receiving a reflected portion of the energy and separating it into acoustic frequency spectrum bands, and generating signals respectively representing the acoustic reflection coefficient in at least three selected spectrum bands. It is shown mathematically that, for a given well casing and borehole size, three frequency bands can be selected such that the reflection coefficients for two of the bands would be relatively low if there were good cementing, while at most one reflection coefficient would be relatively low for poor cementing. In the embodiment of Figs. 6 and 7 a conventional logging tool (Fig. 6) has several acoustic pulse transmitters and receivers T, R which can be selected in pairs by means of programmer 36, control signal generator 34, selector control 54 and selector unit 56. The tool is constructed substantially to prevent direct passage of acoustic energy between the transmitters and receivers. Receiver output signals are passed via channel 60 (which is blanked during the acoustic pulse transmission) and detector 42 (which is gated on when acoustic signals are expected to reach a receiver via the earth formations, cement and well easing) to acoustic travel time computer 44 and to cement evaluation computer 70, the computer outputs being logged at 52 and 71 as a function of tool depth in the well. In the cement evaluation computer (Fig. 7) the time-gated receiver signals are split into the three selected frequency bands (e.g. 10-15 kHz, 15-25 kHz and 25-40 kHz) by filters 81, 82, 83 whose amplified outputs are integrated (with respect to frequency) respectively at 87, 88, 89 to provide three signals of amplitude representing the reflection coefficients in those bands. Selectable gain amplifiers 84, 85, 86 compensate for the frequency response of the logging tool transducers. Circuit 90 (detailed in Fig. 9, not shown) selects the lowest two of the three reflection coefficient signals and averages them, this average being logged. The reflection coefficient signals are recorded individually at 91. The cement evaluation computer may be operated off-line, by recording on magnetic tape the logging tool acoustic waveforms or the outputs of integrators 87, 88, 89, and may be a digital filtering and processing system instead of the system shown (details given). The cement integrity log may be displayed on an oscilloscope or recorded by a digital printer.
Patent GB-1508134-A (GB)
Title: Peptised natural or synthetic rubber
IPC: C08C19/08
Filed: 1975-07-28
Abstract: 1508134 Peptizing powdered rubbers RUBBER & PLASTICS RESEARCH ASSOCIATED OF GREAT BRITAIN 28 July 1975 [30 July 1974] 33510/75 Headings C3E and C3P Powdered rubbers are peptized by dry-blend. ing with a peptizing agent and heating the mixture to effect peptization whilst retaining the particulate nature of the powdered rubber. A partitioning agent and a filler may be included; carbon black serves both functions. Conventional peptizing agents are used, especially organic sulphur compounds. In examples, the rubbers treated are natural rubber, SBR and nitrile rubber; carbon black or whiting is present in most cases; and the peptizing agent is zinc-2- benzamidothiophenate, di - o - benzamidophenyl disulphide, zinc pentachlorothiophenate, a mixture of pentachlorothiophenol with an activator, or a chemically unidentified commercial peptizer.
Patent GB-398369-A (GB)
Title: Improvements in motor vehicle transmission
IPC: B60K23/02
Filed: 1932-11-26
Abstract: 398,369. Controlling motor-vehicle clutches; driving-gearing. BENDIX AVIATION CORPORATION, 105, West Adams Street, Chicago, U.S.A. Nov. 26, 1932, No. 33527. Convention date, Nov. 27, 1931. [Classes 79 (ii) and 79 (v).] A clutch disengaged automatically when the engine speed falls below a predetermined minimum is disposed between the engine and the change-speed gear, and an over-running clutch 52 is disposed between the changespeed gear and the propeller shaft. The main clutch is controlled by a servo-motor 10 acting on the clutch pedal 14 and connected by a valve 20 either to the induction pipe 16 or to the atmosphere at 28. The valve 20 is operated by a solenoid 22 controlled by the usual generator cut-out 29, this cut-out being automatically operated when the engine or generator speed falls below a predetermined limit. When this happens the solenoid 22 is de-energized and a spring 30 moves the valve 20 to the position shown in Fig. 2, thus connecting the servomotor 10 to the induction pipe and disengaging the clutch. When the engine speed is increased the cut-out closes, the solenoid is energized, and the servo-motor 10 is connected to the atmosphere so that the clutch is re-engaged. The rate of engagement is rapid at first as the air escapes from the closed end of the servomotor 10 through a hole 32, but this hole is gradually closed by a conical part 34 of the piston rod and the rate is decreased. The rate of engagement is further controlled by a valve box 38, Fig. 3, connected by pipes 46, 50 to the induction pipe and the servo-motor, and having a piston valve 36 controlled by a spring 42. When the clutch is disengaged the piston valve 36 is held at the top by the vacuum at 44, but as the engine throttle is opened to increase the engine speed and cause the clutch to engage, the vacuum decreases and the valve 36 is drawn down by its spring 42. Adjustable air-bleed openings 48 are thus uncovered and the final rate of clutch engagement is rapid at wide open throttle.
Patent GB-792330-A (GB)
Title: Resilient gear
Inventor: PARKS JOHN HARRISON
IPC: F16D3/62
Filed: 1955-11-23
Abstract: 792,330. Shaft couplings. CATERPILLAR TRACTOR CO. Nov. 23, 1955, No. 33551/55. Class 80 (2). A gear ring 12 is mounted free for rotation on a hub member 11 keyed to, a shaft 15, the circular end 37 of an arcuate spring 32 being anchored on a pin 39 to the hub 11, and the other circular end of the spring 36 being engaged in a semi-circular seat 38 in the gear ring 12 to provide a shock-absorbing drive means. A cover-plate 23 having lubricant admitting holes 51, is keyed to the shaft 15 and retained with a nut 28. In a modification, the hub member has an abutment extending radially outwards and the gear ring an abutment extending radially inwards, these abutments being engaged by the ends of substantially circular springs having thickened portions intermediate their ends. Lubricating passages are provided in the shaft and the hub member.
Patent GB-410533-A (GB)
Title: Improvements in apparatus for playing a game of skill
IPC: A63F7/00
Filed: 1932-11-28
Abstract: 410,533. Table games. WHITE, A., Highbury, Whitehorse Street, Hereford. Nov. 28, 1932, No. 33567. [Class 132 (ii).] Games apparatus comprises a horizontal surface over which pieces are propelled by cues or otherwise into compartments provided with resilient means which, if struck by the pieces, cause the latter to rebound towards the playing surface. Discs 1 are propelled into compartments 5 of various widths formed by strips 6. The strips do not extend to the back of the board and across them at the rear runs a length of rubber 8. If a disc strikes the rubber violently it is returned to the playing surface. The rubber is adjustably secured in clips 10.
Patent GB-206731-A (GB)
Title: Improvements in or relating to locks
IPC: E05B65/20
Filed: 1922-12-09
Abstract: 206,731. Haag, J. Dec. 9, 1922. Latches, sliding; handles.-In a two-bolt lock of the type in which the bolts 2, 3 are withdrawn from the outside by a single operation and from the inside by first an upward movement and then a turning movement of the inside handle 9, the upward movement actuating a slide 4 to withdraw the bolt 2 through a pivoted follower 7 and the turning movement rotating a follower to withdraw the bolt 3, the follower 15 is mounted so as to participate in both the upward and the turning movements of the handle 9. In the construction shown in Fig. 1, the follower 15 is mounted on the square portion 13, Fig. 5, of a stem on the plate 11, which is adapted to slide on the front of the casing 1 and is provided with balls 14 to diminish friction, the slide 4 being mounted on the clyindrical portion 120 of the stem. An integral portion 10 of the handle 9 is secured in a seating 100 formed by the plate 11 and a block 12 screwed to the plate 11, and the follower 15 is prevented from rotating during the upward sliding movement by a stop 16. In the modification, Figs. 6 and 8, the stem of the handle 9 is provided with (1) a cylindrical portion 120, which slides in a slot 101 in the casing 1 and has the slide 4 mounted thereon, (2) a square portion 13 on which is mounted the follower 15 and (3) a second cylindrical portion 18 adapted to slide in a slot 19 in the back plate of the casing 1. The follower 15 in this construction is provided with an angular slot 20 in which a pin 21 on the casing works.
Patent GB-787706-A (GB)
Title: High vacuum distillation apparatus
IPC: B01D3/12
Filed: 1955-11-27
Abstract: In high-vacuum distillation apparatus comprising a vessel 1 through which passes a horizontal rotary shaft 8 carrying spaced discs 11 whose lower segments dip into the distilland in the sump of the vessel, condensing surfaces 12 being disposed between the upper segments of the discs, displacement bodies 25 are provided in the sump-space between the discs in order to reduce the volume of distilland necessary in the sump for maintaining the required minimum immersion of the discs.  The vessel is connected to vacuum pumps by pipe 3.  In continuous <PICT:0787706/III/1> distillation, the distilland is fed continuously from reservoir 6 through pipe 5 into one end of the sump where it is heated by electric-heater 37.  Shaft 8 passes out of the vessel through stuffing-box 10, and is rotated by any suitable drive. Evaporation takes place from the film of distilland on the upper surfaces of the discs.  Condensation takes place on condensers 12 which are supplied with cooling medium via pipes 13 and 14.  The distillate collects in troughs 15, and is withdrawn via pipes 16, 16a, 16c into one or other of the receivers 18a, 18b.  The distillation-residues are withdrawn via pipe 20 into receiver 23, the level of distilland in the sump being adjusted by the height of pipe 20, which can be moved in stuffing-box 21.  The displacement bodies 25 may have either transverse bores or groove-like recesses to facilitate the movement of the distilland towards the outlet.  In another embodiment, which is very suitable for very heat-sensitive liquids, the rotating discs are hollow, and the distilland is heated by passing heating-medium through them.  In this case, the displacement bodies are also hollow, but cooling-medium is circulated through them.  Specification 667,285 is referred to.
Patent GB-521698-A (GB)
Title: Improvements relating to wind screen wiper actuating mechanisms
IPC: B60S1/18
Filed: 1938-11-21
Abstract: 521,698. Windscreen wipers. LUCAS, Ltd., J., and PURDEN, R. H. Nov. 21, 1938, No. 33769. [Class 138 (i)] Relates to mechanisms which oscillate a wiper arm through an arc of movement and also move the arm to an unobstructive position, and consists in the combination of a rotatable member h carrying a wiper actuating crank g, a displaceable member i supporting the rotatable member and movable automatically into either of two positions for varying the position of the crank axis, a retaining lever q adapted to secure the displaceable member in either of the two positions, an over-centre spring s acting on the lever, and manually operable means adapted by varying the position of the spring to move the lever so that the displaceable member can be moved to and secured in either position. The lever g carries a projection r which engages either a recess o at one end of a slot n in the member i or a recess p at the other end. The lever q is carried by a sleeve engaging a pin t carrying an arm v to which the other end of the spring s is secured. The crank g is linked to a rack d which oscillates the wiper arm. On turning the shaft t, which may carry an electric switch controlling the driving motor, the spring s is moved to the other side of the shaft t. The member i, which has guide slots m, is thus permitted to move until the projection r engages the recess towards which it is urged by the spring. The additional movement of the rack d so produced moves the wiper arm b to out-of-the-way position. In a modification, the displaceable member swings about a pivot. In another modification, the whole driving mechanism swings about a pivot on the motor casing. Specifications 499,082 and 508,806 are referred to.
Patent GB-191017-A (GB)
Title: Improvements in friction clutches
IPC: F16D15/00
Filed: 1922-12-11
Abstract: 191,017. Scintilla, [Firm of]. Dec. 27, 1921, [Convention date]. Clutches, friction; operating clutches. - In friction clutches for short periods of operation, the engaging-elements are constituted by the parts of a ball bearing, whereof the balls are driven by a cage on the driving-shaft, while the races form the driven members, one being axially shiftable to cause jamming of the balls and transmission of power. A driving-shaft a, running in a bearing h, carries a flanged member b, the flange being drilled to leave projections c fitting between balls k. The inner race f is fixed on the neck of the member g, which is supported by a thrust-screw l in a casing i and centred in a member e by its periphery and the balls k. The member e, carrying the outer race d, engages the member g by a tongue s and groove t, is slidable on the stationary parts h, i, and has gear teeth u. Axial movement of the member e to close the clutch may be effected by a stationary electromagnet m, a spring-pressed armature o, thrustrods n, and a washer p. It is stated that the balls may be replaced by rollers.