baber/WOPTO huggingface dataset:
Patent GB-1414686-A (GB)
Title: Laser telemeter
IPC: G01S17/10
Filed: 1973-04-26
Abstract: 1414686 Photo-electric distance measuring COMPAGNIE GENERALE D'ELECTRICITE 26 April 1973 [27 April 1972] 19992/73 Heading H4D [Also in Divisions G3 and H1] In a pulsed laser echo distance measuring system improved accuracy is obtained if the echo signal level at the receiver 3, e.g. a silicon photo-diode is kept constant by a retro-active system incorporating a movable graded obturator 6 in front of the laser 1; however if the target is moving slowly the laser power may damage the obturator and according to the invention such damage is obviated by rotating it. The obturator may comprise a glass disc 8 and a metallic layer 9 the thickness of which decreases radially from the centre of the disc. In another embodiment retro-active control response time is decreased by replacing the transverse movement of the obturator in Fig. 1 by beam deflexion, Fig. 3 (not shown). Another beam deflexion arrangement is described, Fig. 4 (not shown).
Patent GB-198258-A (GB)
Title: Improvements in or relating to washing boards
IPC: D06F1/00
Filed: 1922-07-21
Abstract: 198,258. May, W. July 21, 1922. Washing-boards.-Transverse wooden members c are formed with saw-cuts e near their ends for engagement with inturned flanges b of rectangular metallic side frame members a. The members c are spaced apart by small blocks d, and are secured by transverse bars f, g, and vertical bars h secured to the frame members at i, and also provided with saw-cuts. A splash preventing board is secured at the top of the apparatus.
Patent GB-1532153-A (GB)
Title: Floor-sweeping machine having an auxiliary brush
IPC: A47L11/32
Filed: 1977-05-12
Abstract: 1532153 Floor sweeping machine LEIFHEIT INTERNATIONAL GUNTER LEIFHEIT GmbH 12 May 1977 [17 May 1976] 20012/77 Heading A4F  In a floor sweeping machine of the type having at least one auxiliary brush 15 rotatable about a generally upright axis in order to sweep dirt into the path of the main roller brush (not shown), and in which the auxiliary brush is inclined so that a portion of its periphery projects outwardly of the side wall of the machine housing 10, the body 17 of the brush 15 has on its underside a ring of teeth 18, a part of the ring engaging the floor being cleaned and so driving the auxiliary brush.
Patent GB-358050-A (GB)
Title: Improvements in and relating to systems of picture transmission
IPC: H04N3/08
Filed: 1930-07-02
Abstract: 358,050. Television. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Moore, D. M. ; 592, Park Avenue, East Orange, New Jersey, U.S.A.) July 2, 1930, No. 20089. Convention date, July 9, 1929. [Class 40 (iii).] A scanning device comprises a rotatable mirror and means for varying the angular relation between its surface and its rotational axis. The mirror 12, as shown in the Figure, is mounted on a disc rotated by a motor 14, and a threaded bearing 16 co-operates with a gear 17 mounted on an arm 18 rotating with the mirror. The disc is connected by an eccentrically mounted rod 19 to the gear 17 so that its inclination to the rotational axis 15 is varied during rotation. Light from a fluctuating source 11 (or a Kerr cell) is reflected by the mirror and traces a spiral path on the screen 13. Two such sources 11 may be used to trace simultaneously two neighbouring spirals. The Specification as open to inspection under Sect. 91 (3) (a) also describes a scanning device consisting of two mirrors rotated at different speeds' to scan a screen, and states that the scanning lines may be denser at the centre of the picture than at the edges. This subject-matter does not appear in the Specification as accepted.
Patent GB-1380212-A (GB)
Title: Control rod drive in a nuclear reactor
IPC: G21C7/12
Filed: 1972-05-01
Abstract: 1380212 Controlling reactors B A MASLENOK A S KHEGAI V G ZLOBIN V G MEDNITSKY L I GENKIN N F PETRICHENKO and B I MITROFANOV 1 May 1972 20089/72 Heading G6C In an arrangement to prevent spontaneous movement of a control rod due to an emergency pressure differential caused by a leakage in the containment casing of the control rod drive, a piston 10 bearing against a rest face 13 is housed in a chamber 8 formed in the lower part of the containment casing (1) (Fig. 1, not shown), which chamber 8 has in its upper portion a tapered surface 15 for arresting movement of the drive rod 5 with the aid of wedging members, e.g. balls 16 in radial slots 17 of the piston 10, while at its bottom portion channels 14 communicate with the reactor vessel, a partition tube 9 surrounding the drive-rod 5. The upper part of the piston 10 is tapered in congruence with the tapered surface 15. The piston 10 is sealed by packing rings 11 and is pressed by a spring 12 against the rest face 13. If a leakage should occur in the containment casing, the resultant pressure difference will cause the reactor coolant to pass up through the channels 14 into the chamber 8 and push the piston 10 upwards. As the piston 10 rises, the balls 16 come into contact with the tapered surface 15 and are pressed inward against the drive-rod 5, thus arresting its upward movement.
Patent GB-332715-A (GB)
Title: Improvement in wrist band for watches
IPC: A44C5/16
Filed: 1929-07-01
Abstract: 332,715. Jarvis, F. July 1, 1929. Watch wristlets.-In a wrist band for watches, of the type comprising a pair of straps capable of being secured to one another and provided at their free ends with bent-over portions or loops containing U-shaped pieces of metal and capable of being passed through the loops of a watch, the metal strip is constructed with a portion of each end having means by or through which it can be affixed to the strap and at one end with means for engaging the extreme end of the strap. One end of the metal piece C is inserted between the two layers A, B forming the strap and is secured to the layer A by tongues D, the other portion of the metal piece being positioned next to an extension of the layer B and secured thereto by tongues E engaging same and by the turned over nose-piece C<2> engaging the end of the layer; the metal piece C and the extension of the layer B are bent over to form a loop. Slots or holes by which the metal piece C can be sewn to the strap may be provided instead of the tongues D, E.
Patent GB-1312075-A (GB)
Title: Methods of and apparatus for manufacturing sliding-clasp fastener stringers from plastics material
Inventor: POPOVITSCH E
IPC: A44B19/12
Filed: 1970-04-27
Abstract: 1312075 Shaping sliding clasp fasteners DR KARL F NAGELE FEINMASCHINENBAU 27 April 1970 [2 May 1969] 20172/70 Heading B5A [Also in Division E2] A sliding clasp fastener stringer is shaped in apparatus including a winding head 3 fed with a strand 1 of plastics material from a spool 2, the strand being helically wound on a fixed mandrel 6 and fed between wheels 7, 8 on vertical axes and having peripheral gaps 9 which receive and support the convolutions whilst the upper surfaces thereof are stamped by a die 15 and the lower surfaces are supported by a block 16. The mandrel tapers at the gap between the wheels, and the stamping operation provides coupling surfaces 14. A resilient member 23 presses the convolutions in the direction of the wheel 8 and acts as a brake on the movement of the helix along the mandrel. The thus shaped helix then passes into a heated shaping wheel 18  comprising discs 18a, 18b, 18c providing between them an annular groove 22 with circumferentially spaced ribs 20 and pins 21 for the reception of the convolutions, the interconnecting parts 19 thereof being shaped by toothed discs 25, 26. The disc 25, Fig. 7, has teeth 27 which compress the parts 19 to shape against the pins 21 each of which has an inclined surface 28 providing a protuberance 29. The teeth on the disc 26 are more blunt. The stringer is withdrawn from the wheel by a stripper 24 and cooled by an air stream. Two such machines may be located side-by-side with a device 31 to draw the two stringers together which are received on a spool 32.
Patent GB-1603529-A (GB)
Title: Filming light
IPC: F21L14/02
Filed: 1978-05-17
Abstract: A protective basket (3), in the shape of a semicircular cylinder and made from glass, around the incandescent lamp (13) and in front of the reflector opening protects the user without restricting the light cone ( alpha 1) of the film luminaire. <IMAGE>
Patent GB-148247-A (GB)
Title: Improvements in or relating to starters for internal combustion engines
IPC: F02N11/00
Filed: 1920-07-09
Abstract: 148,247. Soc. des Phares et Equipements Electriques, (Assignees of Delaux, P.). June 17, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Turning-gear.-An electric motor actuates power-storing apparatus, such as a spring device or a piston for compressing air, which is automatically released to impart a sharp turn to the engine shaft. In the form shown, the motor c tensions a spring g by means of a worm b, a worm wheel a loose on the engine shaft and temporarily coupled to a pinion d, and a rack f. The pinion d has a free-wheel connexion with the engine shaft, so that when the coupling between the wheels a, d is automatically released after one rotation of the wheel a, the spring g rotates the engine shaft by means of the rack and pinion f, d. The rack and pinion may be replaced by chain gearing.
Patent GB-1222650-A (GB)
Title: Generating machines
Inventor: GADD EDWARD
IPC: H02J7/24
Filed: 1969-04-21
Abstract: 1,222,650. Radio interference suppression for regulated generators. LEECE-NEVILLE CO. 21 April, 1969 [20 May, 1968], No. 20255/69. Heading H2H. [Also in Division G3] To prevent interference with the radio communications equipment of a vehicle caused by the radio frequency transients produced when the field winding 13 of its alternator is deenergized, the winding 13 is shunted by a series circuit comprising the usual field discharge rectifier 32 and a coil 31 whose inductance is sufficiently high to suppress the transients to an acceptable level. A capacitor 33 forms, with the coil 31, a parallel L.C. circuit which has a high impedance over the operating frequency range of the communications equipment. The output voltage of the alternator/rectifier unit 10, 11, 12, 17 is regulated at a predetermined value by a control circuit comprising silicon controlled rectifiers 23, 24 which switch the winding 13 on and off and which are controlled by the contacts 29 of a relay coil 27 responsive to the output voltage of the rectifier 17. In operation the rectifiers 23, 24 are fired by closure of contacts 29 and cease conduction at the end of the voltage cycle during which the contacts open.
Patent GB-935056-A (GB)
Title: Improvements relating to vibratory motors
IPC: H02K33/04
Filed: 1962-05-25
Abstract: 935,056. Dry shavers. CARINTHIA-ELEKTROGERATE G.m.b.H. May 25, 1962 [May 31, 1961], No. 20262/62. Class 131. [Also in Groups XXXII and XXXV] An electric shaver is driven by a vibratory electric motor having two oppositely reciprocating arms 5a, 6a (see Group XXXV) which drive separate cutters 13a, 13b by means of abutment pins 14 extending across the arch of the cutters. In a modification (Fig. 6, not shown), the arms may act only to drive the cutters outwardly against return springs in the shaver head. In a further form (Fig. 4, not shown), a single cutter is driven from both arms by a link mechanism.
Patent GB-375096-A (GB)
Title: Improvements relating to domestic stoves or fireplaces
IPC: F24B1/182
Filed: 1931-07-15
Abstract: 375,096. Cooking ranges. PASCALL, F., 156, Charing Cross Road, London. - July 15, 1931, No. 20271. [Class 126.] Relates to combination ranges having an oven above a fireplace, which can be open or closed at will, and comprises modifications in the outer casing. As shown each side wall of the casing is made in two superposed sections d<1>, h<1>, which are spaced apart to receive the bottom plate k of the oven flue b<2>, the section being flanged at their rear edges and carrying hooks h<4>, d<5>, on which are hung the back wall plates. The sections are also grooved for the reception of the sliding hob plates a<40>, and the top damper plate l. The front framing d<8> and the side sections are secured together by screws. Joints.-The upper and lower sections of the side walls may be connected by the joint shown in Fig. 5. The lower section is formed with a ledge m<1> on its inner face and a wedge member m<3>, which takes into a correspondingly-shaped recess n<1> in the upper section. Behind the wedge m<3> is a tapered point m<4>, which fits a recess n<2> formed by a thickening on the outer face of the upper section. Specification 346,070, [Group XXIII], is referred to.
Patent GB-477099-A (GB)
Title: An improved process for the recovery of precious metal values from ores
IPC: C22B11/08
Filed: 1936-07-23
Abstract: In a combined cyanide and flotation process for the recovery of precious metals, the ore is treated with cyanide solution and the pulp is then conditioned for precipitation by removing or inhibiting free oxygen present by exhaustion and the addition of a reducing agent such as an alkali hydrosulphite.  A precipitant such as zinc dust is added along with or subsequent to a lead salt; or the zinc used may first have been treated with a lead salt.  After precipitation the pulp is conditioned for flotation by the addition of a heavy metal salt such as a copper or iron salt, for example copper sulphate, which converts the cyanides present into compounds which are non-solvents for the precipitated metals, and flotation is effected by means of the usual agents such as xanthate, cresylic acid, and pine oil.  The flotation concentrate may be treated by further cyaniding or by refloating, and the tailings from the second flotation may be returned to the process for recyaniding and flotation.  If the pulp after solution of the metals contains only relatively small amounts of free oxygen, the deoxidation step may be dispensed with.  In some cases, ore pulp may be classified into sand and slime, the slime being treated according to the above process and the sand leached with cyanide solution in open tanks.  Specification 460,183 is referred to.
Patent GB-749317-A (GB)
Title: Improvements in transformer on-load tap-changing equipment
IPC: H01F29/04
Filed: 1953-07-23
Abstract: 749,317. Switching systems for transformers. ELECTRICITE DE FRANCE. July 23. 1953 [July 24, 1952], No. 20497/53. Class 38 (4). On-load tap-changing equipment for a transformer having a winding, or windings, I-III tapped at three points A-C, comprises relayoperated switches 1-3 for directly changing the taps as desired, the equipment being formed as a unit separate from the transformer and requiring no connection thereto other than by the readily removable electrical connections between the tapping points and the switches. A further relay switch 4 controls the temporary insertion of impedances 4 in circuit during a change of tap to prevent the short-circuiting of adjacent taps. The switches are controlled by a manual, or automatic, control member, the order of operation of the switches 1-4, consequent upon movement of the control member, being determined by a set of relays connected electrically to the control member and to auxiliary contacts of the switches, the arrangement being such that an incorrect, or incomplete, sequence of operations results in the operation of circuit breakers which effect deenergization of the transformer.
Patent GB-402023-A (GB)
Title: Improved method of impregnating wood
IPC: B27K3/12
Filed: 1933-07-21
Abstract: Wood is impregnated by removing the bark from portions of a growing tree and coating the bared portions with a water-soluble substance in paste form.  Colouring matter, glue, glycerine and infusorial earth may be added to the preservative paste.  The coated portion of the tree may be covered with a waterproof bandage.
Patent GB-327921-A (GB)
Title: Improvements in gas pipes
IPC: F16L15/08
Filed: 1929-07-05
Abstract: 327,921. Douchement, A. J. Jan. 3. 1929, [Convention date]. Spigot - and - socket screwed joints ; sleeve ioints.--Thin gas pipes 4 are connected to the internally screwed jointing sleeve 3 used with the usual thick pipes by a ring 5 which is fixed to the end of the pipe 4 by expanding the latter or by welding &c. and is externally screwthreaded before orafter this operation to engage the sleeve.
Patent GB-389356-A (GB)
Title: Improvements in and relating to mercury vapour rectifiers
IPC: H01J13/20
Filed: 1932-07-21
Abstract: 389,356. Mercury vapour rectifiers. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. July 21, 1932, No. 20644. Convention date, July 21, 1931. [Class 39 (i).] Connection between the leading-in wire n and the control grid d is effected by means of a sliding contact. A spring - pressed piston f is housed within an insulating bush g, secured to the shield e, or to the casing, and contacts with an arm i securing the grid d to the anode insulator c. The bush g may extend to the anode cover or may be connected thereto by a separate tube o. In a modification the contact consists of a spring tongue, housed within an extension of the sleeve.
Patent GB-999330-A (GB)
Title: Fluid control valve
IPC: F15B13/04
Filed: 1964-05-19
Abstract: 999,330. Valves. COMMERCIAL SHEARING & STAMPING CO. May 19, 1964 [Oct. 11, 1963], No. 20683/64. Heading F2V. A spool valve 12, which controls the fluid distribution to a ram, is urged into the neutral position by a centering spring 19 and has a spring-loaded member 16 which co-operates with detents 17, 18; when the members 16 are against the left- and right-hand faces of detents 17, 18, respectively, the spool is retained in the " raise " and " float " positions. When the spool is manually held adjacent the right and left faces of detents 17, 18, respectively, the spool occupies the " raise " and " lower " positions. The spool 12 is slidable in a bore 11 having a pair of supply inlets 20, in parallel with a further supply inlet 22; the inlets 20 are on either side of an outlet 21 and communication therebetween is cut off when the spool is in the " raise " or " lower " positions and pressure is supplied to one of the main ports 30, 31 from inlet 22 and bifurcated passage 24 which intersects the bore 11 between the inlets 20 and the ram ports 30, 31. A check valve 23 is disposed between inlet 22 and the passage 24. The bore is also intersected by two exhaust passages 32, 37 and a further exhaust passage 34, the sole purpose of which is to protect a seal 35. In the "float" position the ram ports 30, 31 are interconnected via a passage 13 and ports 33, 36 in the spool; moreover should the ram move when the spool is in the " float " position, a spool groove 38 acts to bleed the excess fluid from ram port 31 to exhaust passage 32 since the port 31 is connected to the ram on the side opposite to that to which the piston-rod is attached.
Patent GB-1114679-A (GB)
Title: Improvements in heat exchange apparatus
IPC: F04B43/12
Filed: 1965-05-17
Abstract: 1,114,679. Refrigerating. SIBANY MANUFACTURING CORPORATION. 17 May, 1965 [18 May, 1964], No. 20709/65. Heading F4H. In a heat pump of the type comprising heat-exchangers 14, 141 mounted on opposite ends of a rotatable shaft 2 having refrigerant passages 20, 58, 60 therein, the refrigerant is compressed by deformation of a flexible tube through which the refrigerant passes. In the embodiment shown, passages 58 and 60 communicate with opposite ends of a flexible walled annular chamber 66 which rotates with the shaft past fixed rollers 80. Each heat-exchanger comprises two spokes carrying annular tubes 36, 36<SP>1</SP>, ducts 44, 441 in one spoke of each exchanger communicating with the opposite ends of passage 20, and ducts 46, 461 in the other spokes communicating with the ends of passages 58 and 60, respectively. Passage 20 includes a restriction 22. Shaft 2 forms the rotor of an electric motor 4 and its direction of rotation is reversible to reverse the functions of heat exchangers 14, 14<SP>1</SP>. The degree of refrigerant compression in chamber 66 may be varied thermostatically by altering the distance of the rollers 80 from the axis of rotation via a cam arrangement (Fig. 2, not shown). The heat pump may be mounted in a casing installed in a window (Fig. 9, not shown). Deformation of the flexible walled annular chamber may be effected by rollers acting on its inner wall (Fig. 8, not shown) or by the action of an eccentrically mounted ring on its outer or inner surfaces (Figs. 13 and 14, not shown, respectively), the chamber being fixed in the embodiments of Figs. 8 and 14.
Patent GB-1514762-A (GB)
Title: Solid-state fail-safe logic system
IPC: H03K19/14
Filed: 1975-05-15
Abstract: 1514762 Fail safe transistor logic circuits GENERAL SIGNAL CORP 15 May 1975 [30 May 1974] 20715/75 Heading H3T A fail-safe logic gate comprises a circuit connected between an A.C. input terminal 10 and a power supply terminal 16 and arranged to pass only the A.C. to the input side of an isolating coupler, e.g. D3, D4 or a Hall device and an active second circuit comprising the output side D4 of the coupler and input terminals 11, 12 for D.C. signals, whereby an A.C. output signal is available only in the presence of the A.C. and D.C. signals. The gate is suitable for replacement of relays having back and front contacts in a railway signalling system. In operation a capacitor charges via Dl and D2 on negative half cycles of the A.C. signal at 10, a transistor T1 being turned on during positive half cycles so as to discharge C1 via the LED D3 which thus irradiates the photo-diode D4 with pulses of light. The space between D3 and D4 may be filled with insulating material such as glass. If terminal 11 receives a D.C. signal positive relative to 12, pulses, corresponding to the pulses of light will be passed by C2 and amplifier T3, T4 to output terminal 15. Terminals 11 or 12 may be connected to the common line 17. In Fig. 1 c (not shown) T1 is replaced by a resistor so as to form a diode pump. In Fig. 2 (not shown) three sub-circuits 20 are connected to a single sub-circuit 25 to form an OR gate. Fig. 3A (not shown) illustrates a fail-safe circuit for producing the D.C. signal at A, B in response to the presence or absence of an A.C. signal at 32. It comprises a complementary pushpull transistor amplifier responsive to A.C. signals and feeding a series tuned circuit, a winding being coupled to the inductor feeding a bridge rectifier giving when the A.C. signal is present a negative D.C. signal of greater absolute value than the power supply and termed a "super-minus" signal. This signal is fed to a three-transistor switching circuit which provides a super-minus or positive output respectively in response to a super-minus or zero input. Figs. 4, 5 and 7 (not shown) depict block diagrams including the circuits shown in Fig. 1A and 3A for simulating back and front contacts of relays. Fig. 8 shows a circuit for monitoring the voltage applied to a load 60 from a D.C. source 71 controlled by a switching circuit 50 in response to a logic signal 55. An AND gate 20, 25 of the form shown in Fig. 1A is responsive to the A.C. logic signal 55 and to the D.C. voltage across load 60 and provides an A.C. logic signal at 15 only in response to correct operation of switching circuit 50. Driver 30 provides a super-minus output under these conditions. A further check on the D.C. power supply to load 60 is provided by a LED 86 irradiating a photo-transistor T10. In the absence of power in load 60, LED 86 is modulated by clock pulses at 85, but in the presence of voltage across load 60, LED 86 is reversed biased so that T10 provides no output. Fig. 9 (not shown) relates to three circuits of the type shown in Fig. 8 arranged to monitor three separate loads.