baber/WOPTO huggingface dataset:
Patent GB-1525651-A (GB)
Title: Tone detectors
IPC: G10L25/90
Filed: 1976-01-26
Abstract: 1525651 Measuring spectral parameters: detecting the presence of a tone WESTERN ELECTRIC CO Ltd 26 Jan 1976 [30 Jan 1975] 2961/76 Headings H4K and H4R [Also in Divisions G1 and G4] A received signal is identified as being a specific tone only if the estimated values of two or more parameters of the power-density frequency spectrum of the received signal lie in predetermined ranges. As described the estimated parameters are the power #P, 11, Fig. 1, the difference ## d , 12, between the mean frequency and a reference frequency, and the variance (or bandwidth) #B<SP>2</SP>, 13. Each of these parameters is compared 14, 15, 16, with preset values, and if all comparisons are affirmative an identification 17 is made. Thus, for example, noise by itself will not be identified as a received tone, since whilst its spectrum may well contain the prescribed power, #P, and its mean difference, ## d , may well be within the preset range, its variance will, in general, be too large. Similarly, a received signal that actually contains the specific tone but also contains high level noise will not be identified as a received tone since the total power will be too large. In a further embodiment, Figs. 4 and 5, a received signal is identified as being a tone pair, one tone belonging to one group of four, 81-84, Fig. 4, and one to a second group of four, 85-88, by effectively duplicating the circuit of Fig. 1, one group of units, 101, 102, 103, Fig. 5, estimating the power, the mean and the variance of that part of the spectrum from 511 to 1100 c/s, Fig. 4, that embraces the first group of tones, and a second group of units, 104, 105, 106, Fig. 5, operating upon that part of the spectrum from 1110 to 1706 c/s, Fig. 4, that embraces the second group of tones. Each of the two mean frequency differences, ## d  is compared with four ranges, 111 to 114 and 116 to 119, and if one tone in each group is identified a "valid signal" is produced by a gate 125. When a valid tone pair has been identified the outputs from the comparators 111 to 114 and 116 to 119 then indicate the particular pair of tones received. As described the parameters are estimated using conventional digital techniques, and a block diagram (Fig, 2, not shown) is given. In principle, the incoming signal, which may be taken in the form is multiplied by sinw o t and cosw o t, where w o  is the reference frequency, and the results are lowpass filtered, squared, added, and averaged over a period of time of 10 ms, to give- The outputs of the lowpass filters are also each differentiated, multiplied by the output from the other filter, added and integrated to give where #w d =#w-w o  (as before), from which #w d  is derived by division by #P, and finally the differentiated outputs from the filters are themselves squared, added, and integrated to give from which by subtraction and division B is obtained.
Patent GB-381812-A (GB)
Title: Improvements in apparatus for testing the balances of watches
IPC: G04D7/12
Filed: 1932-02-01
Abstract: 381,812. Watches. KABUSHIKIKAISHA HITACHI-SEISAKUSHO, 12, Marunouchi Nichome, Tokio. Feb. 1, 1932, No. 2989. Convention date, Feb. 7, 1931. [Class 139.] Balances, testing.-A watch under test is supported so as to be freely oscillatable around an axis parallel to the axis of oscillation of its balance wheel and the movements thereof are transmitted to a resonator or a plurality of resonators of different natural frequency whereby the period of the balance wheel is ascertained. As shown in Figs. 1 to 3, a freely rotatable plate 5 is supported in bearings 2, 3 on a table 1 and carries the watch A to be tested. The plate 5 has secured thereto an arm 6 co-operating with the forked end of an arm 7 depending from a rocking shaft 8 mounted in a frame 9. The frame has a pair of projecting members 10, 11 to limit the amplitude of the arm 6 and the shaft 8 has suspended therefrom a pair of pendulums 13, 14 with frequencies slightly above and below that of the ideal balance wheel. The correctness of the balance is determined by noting the amplitudes of the pendulums on a scale plate 16. The setting of the apparatus is facilitated by a plumb line 18. For transport purposes. the pendulums are locked by manipulating a knob 19 to raise the scale plate and depress a clamping member 20.
Patent GB-820339-A (GB)
Title: Improved joint for elastic facings bonded to rotary members
IPC: B29C70/68
Filed: 1957-01-28
Abstract: 820,339. Making composite pulleys; jointing. VORWERK, W., and VORWERK, M., [trading as VORWERK & SOHN]. Jan. 28, 1957 [Jan. 27, 1956], No. 2989/57. Classes 83 (2) and 83 (4). [Also in Group XXXIV] A rotary body with a rigidly adhering elastic covering and with a perforated inlay interposed between it and a metallic base, is characterized in that the adhesive surface of the base having a width corresponding to that of the covering is provided with cut-out portions for increasing its adhesive surface and that the inlay stretching essentially over the whole of the adhesive surface of the base consists of a wire mesh or grid and rests on those parts interposed between such cut-out portions but, at the remaining parts, is completely enclosed by the covering around it. In an embodiment a flexible wheel for band grinding machines comprises a metal wheel 6 provided around its periphery with helical grooves or flutings 9 against which is placed an insertion 10 consisting of woven steel wires after which the contoured plastic facing 11, e.g. of the polyester-diisocyanate type, is bonded on to the wheel. The grooves may be wedge-shaped (Fig. 3). The insertions may be welded in position or secured by additional encircling bands and may consist of a single or several superimposed layers.
Patent GB-513203-A (GB)
Title: Improvements in or relating to latches and locks
IPC: E05B63/20
Filed: 1938-01-31
Abstract: 513,203. Sliding latches. KEATS, H. B., and GIRDLESTONE, F. G. Jan. 31, 1938, No. 3020. [Class 44] Sliding latch 29 adapted to be automatically retracted when released as by the actuation of one or other of the push buttons 54, 55, is combined with an actuating bolt 21, which, when moved inwards by the striker plate 17 during the closing of the door, moves the latch 29 outwards partly to latching position by means of a lever 36 pivoted at 39 and having an abutment 46 engaging the end of the latch, the movement being completed by a spring 43 pulling the lever about the pivot 37. When the button 54 or 55 is depressed, the lever is rocked out of the plane of the latch, which is then retracted by a spring 57 connecting it to the bolt 21. During the opening of the door, the bolt 21 is moved outwards by spring 57, causing the lever 36 to swing on 39 so that abutment 46 slides along the side of the latch until it clears it, when it is moved into alignment by a spring 48 pressing on the lever.
Patent GB-378783-A (GB)
Title: Improvements in and relating to jigger conveyors
IPC: B65G27/00
Filed: 1932-02-01
Abstract: 378,783. Jigging conveyers. EICKHOFF, A., 176, Hunscheidtstrasse, Bochum, Germany, (trading as EICKHOFF, MASCHINENFABRIK UND EISENGIESSEREI GEB.). Feb. 1, 1932, No. 3026. Convention date, Jan. 31, 1931. [Class 78 (i).] In a conveyer having at least one section of troughing directed upwardly relatively to the other sections and feeding upwardly, the more steeply inclined section is moved by means of its supports to so much greater extent in the vertical direction relatively to the other sections that the amount of feed on this section is at least approximately equal to the amount of feed on the other sections. In the construction shown in Fig. 3, the lower end of the inclined section r<1> makes an anglef alpha<1> with the horizontal and the upper end an angle alpha<2>. The supports b<1>, b<2> for this section are inclined to the horizontal at angles #<1>, #<2> respectively, and are carried on a travelling ramp frame g. The inclination of the supports b<1>, b<2> and the frame g may be adjustable. A lifting cylinder j may supplement the action of the motor d. In a modification the inclined section is supported by obliquely arranged pivoted arms. The bottom of the inclined section is roughened or grooved.
Patent GB-1334506-A (GB)
Title: Fishing vessels
IPC: B63B35/26
Filed: 1972-01-21
Abstract: 1334506 Freezing fish G A L Y PRIETO 21 Jan 1972 [21 Jan 1971 10 Feb 1971] 3041/72 Heading F4H [Also in Division B7] Fish are withdrawn from a net through a pipe 6, separated from sea water by a screen 27, and killed and frozen by immersed passage through chilled brine under a conveyer 32. Brine overflow carries the fish along a channel 3 into a selected pair of storage tanks, the selection being effected by a gate (50), Fig. 13 (not shown). There may be a second killer tank at the opposite end of the channel 3 for accepting manually loaded fish. While a storage tank is being loaded, brine is recirculated through the killer tank by a pump 25 associated with the storage tank. When the storage tank is full, a valve 14 is closed and a valve 13 opened so that thereafter the pump recirculates brine through the storage tank. Refrigerant evaporators 15 and 16 cool the circulating brine. In another arrangement, Fig. 14 (not shown), the evaporators are in the brine circuit outside the tank. When a tank is full, its mouth is closed by a perforated plug which compresses the catch to prevent its movement. To unload a pair of tanks, a shipboard duct 35 with inlets 36 is sealed to the tank mouths. Refrigerated brine from a shore based installation 43 is then pumped upwardly through the tanks to wash the catch out of the duct 35. Seawater may be admitted to the bottoms of the storage tanks for cleaning purposes or for the carriage of live bait to the fishing ground.
Patent GB-1494837-A (GB)
Title: Photomultiplier having operational stability
IPC: H01J43/06
Filed: 1975-01-24
Abstract: 1494837 Photomultipliers RCA CORPORATION 24 Jan 1975 [25 Jan 1974] 3196/75 Heading H1D A photomultiplier comprises an electrode assembly 212 including insulating support members 216, 218 between which the electrodes are mounted, and at least one resilient member 233 retaining the assembly in fixed spaced-apart relationship with the inner wall surface so as to prevent change conduction through components extending between the electrodes and the wall surface, and conductive focusing means, such as regions 250, between the ends of the electrodes and the support members for preventing divergent electrons from impinging on the support members. The additional incidence of electrons on the wall, and the related resistance of the support spacers, their capacitance and the multiplier current is discussed. Region 250 may be Mo, Al, or other conductive metallic coating applied by silk-screening, or evaporationmasking for example, electrical contact with the electrodes being avoided by gap "g". Tube dimensions are given and brackets 233 are of Ni-Cr-Fe alloy 0À25 mm. x 30 mm. Î 3 mm. The resilient members may be clips (132) as in the prior art of Fig. 1 and 2 (not shown) but ofinsulating material, or may be a single resilient member (235) (Fig. 6, not shown) of 3 mm. x 0À25 mm. thick Ni-Cr-Fe alloy. Regions 250 may be interconnected individual surface regions, and the conductive coatings 250 may be replaced by separate metallic electrodes interposed parallel to the spacer surfaces and in the space "g".
Patent GB-908418-A (GB)
Title: Method of making disc wheel and rim assemblies and apparatus for welding disc wheel to rim
IPC: B21D28/30
Filed: 1961-01-27
Abstract: 908,418. Making wheels; uniting by fusion. FIRESTONE TIRE & RUBBER CO. Jan. 27, 1961 [Sept. 26, 1960], No. 3236/61. Classes 83 (2) and 83 (4). A method of making a disc wheel assembled in a rim and having a curved bowl shape tapering from a flat hub portion to a relatively thin rim flange, Figs. 7 and 8, comprises cold spinning a flat circular axially perforate blank into a curved bowl of tapering thickness by axially displacing successive elements of the blank from the hub portion radially outwardly while maintaining the outer diameter of the blank constant, die-forming the spun bowl to provide a cylindrical rim attaching flange thereon, pressing said bowl into a metal tyre rim and making a continuous circumferential weldment of the rim attaching flange of said bowl to the rim and penetrating into said rim attaching flange and into said rim. Apparatus for carrying out the method is described in Specification 909,120.
Patent GB-425392-A (GB)
Title: An improved process for after-treating artificial silk
IPC: D01D10/04
Filed: 1934-01-31
Abstract: Artificial filaments are led in a helical path over a rotating cylinder, or pair of cylinders, having a smooth surface without projections, ribs or channels, and are treated by constantly renewed continuous envelopes of liquids which act simultaneously but separately at different zones of the cylinder.  The liquids may be applied by spraying and after flowing in the opposite direction to that of the filaments, they may be led away through the interior of the cylinder.  The cylinder may have a hollow shaft and its surface may be porous or perforated.  Liquid may be withdrawn from the surface inwardly by the application of suction. Alternatively, the cylinder is arranged vertically and constructed with separate cylindrical parts, the lower edge of each having a smaller periphery than the upper edge of the next lower part so that liquid draining from the upper part is led away through the interior of the lower part.  The separate cylindrical parts may abut with castellated or zig-zag edges, the <PICT:0425392/IV/1> <PICT:0425392/IV/2> <PICT:0425392/IV/3> <PICT:0425392/IV/4> <PICT:0425392/IV/5> tongues being inwardly bent without contacting.  annular troughs are arranged underneath the cylinder for the spent liquid dropping off the lower edges of the cylindrical parts.  Mixing of different treatment liquids is thus avoided.  As shown in Fig. 1, artificial filaments 8 are advanced helically round an upright rotating cylinder 1, the separate turns being kept apart by means of guides 10.  The surface is sprayed with liquids from pipes 6.  The cylinder is perforated and covered with felt or other porous material.  Suction is applied to the hollow shaft to remove the treating liquids.  Partitions 11 in the interior of the cylinder, and separate withdrawal pipes 2 enable the liquids to be separately collected.  As shown in Fig. 2, the cylinder comprises three sections 1, each sprayed with liquid from a pipe 6.  The lower end of each section is bevelled so that liquid dripping from the edge is led into the interior of the adjacent lower section. The liquids are collected separately in concentric annular troughs 45.  As shown in Fig. 3, the adjacent edges of the sections 1 are of zig-zag shape, the tongues 14 being inwardly bent.  Treatment liquid from the upper section flows along the tongues 14 and into the interior of the lower section, and is withdrawn through the hollow shaft 2.  Liquid from the lower section is collected in a trough 47. The thread loops are maintained apart by means of the inclined roller 12.  As shown in Fig. 4, the adjacent edges of the sections are constructed with rectangular tongues 40, 42.  The tongues 42 of the upper section are bent inwardly.  As shown in Fig. 6, the cylinder is suspended vertically from an overhead bearing, and the upper section 19 is of smaller diameter than the lower section 23 so that liquid draining from it passes inside the lower section and is collected in a trough 25.  Liquid from the lower section is collected in an annular trough 24.
Patent GB-658173-A (GB)
Title: Improvements in or relating to the production and discharge of air foam
IPC: B01F5/04
Filed: 1947-02-04
Abstract: 658,173. Making foam. FOAMITE, Ltd. (American-La France-Foamite Corporation). Feb. 4, 1947, No. 3283. [A Specification was laid open to inspection under Sect. 91 of the Acts, Aug. 6, 1947.] Drawings to Specification. [Class 47 (ii)] [Also in Group XXIX] The subject-matter of this Specification is substantially the same as that described in Specification 658,174 but the claims differ.
Patent GB-759191-A (GB)
Title: Bimetallic light metal piston
IPC: F02F3/04
Filed: 1954-02-04
Abstract: 759.191. Pistons. ALUMINIUM LABORATORIES, Ltd. Feb. 4, 1954 [Feb. 18, 1953], Class 122(1) A light-metal trunk-piston. wherein transverse slots 3 or perforations partly separate the crown 1 from the skirt 4, comprises inserts 7 having an uninterrupted. flat top edge and an aperture in register with the gudgeon-pin aperture, the metal of the inserts having a different co-efficient of thermal expansion from that of the piston body and the construction of the inserts and skirts, being such that the bimetallic effect of the inserts is less at the lower portion of the inter-contacting areas of the skirt and the inserts than at the upper portion of the areas and decreases progressively at least from the top to the bottom of the lower portion of the areas. The inserts of heavy metal may be weakened in their lower region by holes, which may be in rows 8, 9, 10 and of different shapes and sizes. Alternatively, the inserts may have a tapered or stepped cross-section. In Fig. 8 the bending strength of the skirt is different at different levels due to its varying thickness. The inserts 21 may be imperforate.
Patent GB-370095-A (GB)
Title: Improvements in automatic electric switches for installations of the type provided with an earthing conductor
IPC: H02H3/16
Filed: 1931-02-03
Abstract: 370,095. Protective cut-out arrangements. OADES, E., 17, Howard Road, Southampton. Feb. 3, 1931, No. 3357. [Class 38 (v).] In the protection against earth leakage of electric installations, particularly domestic and like installations in which the wiring is carried out with conductors 1a, 1b, 1c having a bare earth wire E<1> bound with them, the leakage current causes an electromagnet 15a to drive step-by-step the main control switch 12 and to switch out the faulty conductor restoring the sound conductors. The earth wires are connected to a common bar 2 which is connected to earth through fuse wires 3a and (in parallel therewith) a " plumbago compensator " 7 consisting of bars of plumbago in a container with a fuse wire in parallel with the resistance. The connection to earth passes through the electromagnet 15a which through ratchet gear steps round the main switch until the faulty circuit has been disconnected. If the leakage current is sufficient to blow the fuse 3a the switch arm 4 is released to connect the earth circuit through the limiting compensator and through the electromagnetic switch thereby safeguarding the switch. Should the fuse in the compensator circuit blow, a trip is operated to release the contact arm 13 and open all the circuits.
Patent GB-1142178-A (GB)
Title: Polymerization catalyst for dienes
IPC: C08F36/00
Filed: 1968-01-23
Abstract: 1,142,178. Polymerization catalyst for dienes. GOODYEAR TIRE & RUBBER CO. 23 Jan., 1968 [23 Feb., 1967], No. 3410/68. Heading C3P. A polymerization catalyst composition for butadiene comprises (1) at least one organometallic compound in which the metal is selected from Groups I, II, and III, of the Periodic System, (2) at least one nickel salt of a carboxylic acid or organic complex of nickel compound and (3) HF. The catalyst is used to polymerize butadiene alone, or in admixture with other diolefins, e.g. isoprene. Component (1) is preferably selected from organoaluminium, organomagnesium, organozinc, and organolithium compounds. Specified nickel compounds are nickel benzoate, acetate, naphthenate, octanoate, palmitate, stearate, acetylacetonate and salicaldehyde, bis-(alpha-furyl dioxime) nickel, bis-(salicylaldehyde) ethylene diimine nickel, and nickel tetracarbonyl. The polymerization may be effected in bulk, but is preferably carried out in a liquid hydrocarbon which has been saturated with H.F. The exemplified catalyst is triethyl aluminium and nickel octanoate. In the examples the reaction is terminated by addition of 2,4-di-t-butyl-paracresol mixed with crude abietic acid or 1,1<SP>1</SP>,1<SP>11</SP>- nitrilotri-2-propanol.
Patent GB-277222-A (GB)
Title: Improvements in and relating to milk coolers
IPC: A01J9/04
Filed: 1927-02-07
Abstract: 277,222. Barford & Perkins, Ltd., and Perkins, F. A. Feb. 7, 1927. Milk and like upright coolers.-The corrugated cooling-element 4 and the distributing and receiving troughs 2, 12 are hooked together to permit of ready separation for cleaning or for interchange of the cooling element and receiving trough with others of different form. Hooks 6, 18 are formed on the end walls of the troughs and the pipe connections for the cooling medium at one or both sides of the cooling element form the engaging means. The pipe coupling 16, Fig. 2, may form clamping means engaging a recess 15 in the hook 18 at one side of the receiving trough and a lock nut 17 may be provided at the other side. The upper trough is suspended by pivots 8 in brackets 7, and the level may be adjusted by set screws 9 engaging the bracket bearings. The cooling element has a central ridge at the top to divert the milk evenly to each side as it flows through a double row of perforations in the distributing trough. The element shown is adapted for water cooling only, and may be replaced by a similar element having vertical and horizontal internal baffles and adapted for brine circulation in the lower part and water circulation in the upper part. The lower trough has an outlet for filling a churn, but may be replaced by one having bottle-filling outlets as well as a churn outlet.