baber/WOPTO huggingface dataset:
Patent GB-776804-A (GB)
Title: Reproducer for recorded television signals
IPC: H04N5/919
Filed: 1955-05-31
Abstract: 776,804. Television. MINNESOTA MINING & MANUFACTURING CO. May 31, 1955 [June 11, 1954], No. 15513/55. Class 40 (3). In an arrangement for recovering television signals which are recorded as modulations of a common carrier frequency on a plurality of tracks on a moving record medium the carrier frequency on. successive tracks being phase retarded by equal increments and the tracks cyclically containing successive samples of the television signals, the modulated signals on each track are individually reproduced by means of suitable transducers and after full-wave rectification are supplied to filter circuits which remove components of twice the carrier frequency (and higher frequencies) and the outputs of the filter circuits (which correspond to the envelopes of the modulating signals) are then sampled at an appropriate rate and supplied to a common output channel. In this manner the effect of small deviations in the alignment of the transducers and of variations in the speed of the record medium are eliminated since the amplitude of the detected modulation envelope varies only a small amount between successive halfcycles of the carrier so that the instant of sampling is not critical. As shown in Fig. 1, the record medium 1, which may be a magnetic tape, contains n tracks carrying the television signals as modulation of a common carrier wave and a further track carrying an unmodulated wave of the carrier frequency. The former tracks co-operate with individual transducer heads 31 ... 3n which supply the modulated carriers, via pre-amplifiers 5<SP>1</SP> ... 5n, to fullwave detector circuits 31<SP>1</SP> ... 31n and the outputs from these detectors are then supplied to filters 33<SP>1</SP> ... 33n which suppress components of twice the carrier frequency (and higher frequencies). This detector-filter arrangement (circuit details of which are shown at 31 and 33, Fig. 2), is stated to have the property of effectively storing each half-cycle of the carrier wave until the arrival of the next half-cycle, thus allowing a greater tolerance in the various factors which determine the instant of sampling (e.g. relative alignment of the recording and reproducing heads and tape speed). To effect the sampling the outputs of the filters 33<SP>1</SP> ... 33n are supplied to individual electronic switches 35<SP>1</SP> ... 35n (one of which is shown in detail at 35, Fig. 2) which are operated, in sequence, by means of pulses derived from different tappings on a delay line 25, the pulse input to which is developed from the unmodulated carrier wave via head 3 and a known type of phase control circuit which maintains the average frequency constant and free from short-period variations. The sampled outputs, which are successively applied to the video output channel 37, are then employed to modulate a radio transmitter or for transmission over a land-line. Because of the condenser 81 (Fig. 2) in each sampler output circuit the D.C. level must be restored before transmission. Specifications 727,842, 730,997, and 732,589 are referred to.
Patent GB-584141-A (GB)
Title: Improvements in work-holding fixtures for use with magnetic chucks, tables and the like
IPC: B23Q3/154
Filed: 1944-08-15
Abstract: 584,141. Work holding fixture for use with magnetic chucks, tables, and the like. LAPOINTE MACHINE TOOL CO., Ltd. (Lapointe Machine Tool Co.). Aug. 15, 1944, No. 15554. [Class 60] A work holding fixture for use with a magnetic chuck, table and the like comprises a base and a work support each formed of alternated magnetic and non-magnetic plates secured in assembled relation, said base and support having co-acting concave and convex cylindrical surfaces respectively, the base and support each having a middle section of sub. stantial thickness, the middle section of the support having worm gear teeth formed on its convex surface which are engaged by a worm rotatably mounted in the middle section of the base and effective to move said support angularly relative to said base. The base 10 comprises laminae, of magnetic and non- magnetic material alternately, secured together by longitudinally extending non-magnetic rods 31, and has a concave cylindrical recess 20 receiving a convex cylindrical surface 21 on the work support 12 which is similarly formed of alternated magnetic and non-magnetic laminµ, secured together by longitudinally extending non-magnetic rods 30, and which is cut-away to provide work-engaging surfaces 45 to receive the work W. End plates 22 secured by screws to the end laminµ of the work support have segmental ribs engaging segmental grooves in the end laminµ of the base. Angular adjustment is effected by a worm 51 mounted on a shaft 52 having a squared end to receive a socket wrench and mounted in bushings 53 threaded into a bore in the central lamina of the base which is made thicker than the others'for this purpose ; the worm engages worm gear teeth 50 on the central lamina of the work support, this lamina similarly being thicker than the others. Studs 33 mounted in the end laminµ of the base extend through segmental slots 40 in the end plates 22 and carry washers and clamping nuts for clamping the work-holder in adjusted position. A scale 42 is provided. Specification 571,268 is referred to.
Patent GB-235605-A (GB)
Title: Improvements in or relating to frictional gearings
IPC: F16H15/52
Filed: 1925-06-16
Abstract: 235,605. Erban, R. June 16, 1924, [Convention date]. Variable-speed friction gearing employing rollers as intermediate power-transmitting members particularly of the kind in which the rollers are tilted to engage different paths on the curved faces of the driving and driven members. The rollers are spherically mounted so as to have free motion about three axes at right angles. The roller 3, Fig. 1, may engage a ball enlargement 5 on the spindle 6, which may be tilted for change of speed, or, as shown in Fig. 2, may itself carry a ball enlargement 5 fitting in a spherical cavity in its support. A ball 14 lightly spring pressed into a recess in the part 5 maintains a determined position of the roller when the parts are under light load. Concave spherical surfaces, Fig. 3, or, in a modification, convex surfaces, on the roller 3 may form a ball race engaged by bearing balls engaging grooves in the relatively stationary race 17, an effect similar to a gyroscopic precessional effect being stated to be obtained with this construction, even when the rotational speed of the roller is small.
Patent GB-424954-A (GB)
Title: Improvements in and relating to the feeding of current consuming apparatus
IPC: H02M7/15
Filed: 1933-05-31
Abstract: 424,954. Converting. AKT.-GES. BROWN, BOVERI, & CIE, Baden, Switzerland. May 31, 1933, No. 15708. Void [Abridged as open to inspection under Sect. 91 of the Acts, Dec. 4, 1933]. [Class 38 (ii)] In a mercury arc rectifier for supplying a flame-arc furnace a falling voltage characteristic is obtained by controlling the phase of the grid potential in such a way that the moment of ignition is progressively retarded with increasing load. In the form shown in Fig. 1, the grid e of a 6-phase rectifier g are supplied from a transformer s, the primary of which is supplied from a further transformer h, the leads including the secondary windings of a current transformer p in the A.C. supply circuit n to the rectifier. In this way the voltage applied to the grid is the combination of a component of constant voltage and a component the voltage of which is dependent on the load current and 90‹ out of phase therewith. Fig. 2 is a vector diagram showing the current and voltage relationships. EA is the anode voltage, eg is the component of grid voltage due to the transformer h, ez is the component of voltage due to the current transformer p. The locus of the end point of the vector eg representing the grid voltage is a circle on O, A as chord and having a peripheral angle of 30‹. The angle EA, O, A is the phase angle between the anode and grid voltages at zero load. The shape of the characteristic can be modified by varying this angle.
Patent GB-581178-A (GB)
Title: Improvements in or relating to warp tensioning devices for looms
IPC: D03D23/00
Filed: 1943-09-24
Abstract: 581,178. Tensioning warps in looms ; woven fabrics. BAUMWOLL-SPINNERI & WEBEREI WETTINGEN, Sept. 24, 1943, No. 15724. Convention date, Nov. 11, 1942. [Classes 142 (ii) and 142 (iv)] Threads b, c are divided off from the warp a and are passed over a bar 18 which is reciprocated so that the threads b, c are subjected to variable tension. Alternate thread groups are passed over opposite faces of the reciprocated bar.
Patent GB-857875-A (GB)
Title: Process of preparation of new salts of basic antibiotics
IPC: C07H15/22
Filed: 1958-05-16
Abstract: The invention relates to a salt of methionine, glutamic acid or a N-acyl derivative thereof with a basic antibiotic such as streptomycin, dihydrostreptomycin, neomycin or viomycin.  The p  salt is prepared by reacting the basic antibiotic, or a salt thereof, with the amino acid or a salt thereof.  It is preferred to use the sulphate of the antibiotic and the alkaline earth metal salts of the amino-acid.  The salts may also be prepared by ion interchange with ion exchange resins.  The examples illustrate the preparation of (a) streptomycin DL-methioninate, (b) dihydrostreptomycin L- glutamate, (c) dihydrostreptomycin L- methioninate and (d) neomycin DL- methioninate.  The salts have low toxicity.  Specification 771,338 is referred to.
Patent GB-438900-A (GB)
Title: Improvements in and relating to radio direction finding
IPC: G01S3/08
Filed: 1934-05-26
Abstract: 438,900. Directive wireless signalling. BARFIELD, R. H., and BELL, L. H. BAINBRIDGE-, Radio Research Station, Slough, Buckinghamshire. May 26, 1934, No. 15761. [Class 40 (v)] In a direction-finding system using spaced vertical aerials, the effect of the horizontally polarized component of the received waves due to the coupling between the horizontal members and the aerials is compensated for either by the provision of additional coupling or by introducing a compensating e.m.f. from an additional aerial. In one embodiment, Fig. 2, two vertical aerials are connected to the receiver through a screened horizontal feeder and compensating couplings x, x<1> are provided between the aerial circuits and the earthing wires of the screen, which latter include phase adjusters z, z<1> to ensure exact neutralization of the undesired coupling. In a modification, Fig. 3 (not shown), an unscreened horizontal member has the earthed coils of the coupling devices x, x<1> connected directly thereto. When two aerials such as e, f, g, h, Fig. 4, are coupled by a screened two-wire coupling feeder, an additional neutralizing coupling is effected between a coil b in the screen-earthing lead and the coil g in the aerial circuit. A further system comprises two halves, an unscreened U-shape portion a, b, c, d, Fig. 5, and a lower portion p, x, y, q, consisting of a horizontal wire earthed at its extremities and running close to the horizontal member b, c, compensation being provided by the coupling L, L<1> therebetween, which may be part of a radiogoniometer. The lower part may be replaced by a loop aerial with its plane in the plane of the two vertical aerials and coupled to the coil L, Fig. 6 (not shown). In a system similar to Fig. 4, the coupling b, g is omitted and the feeder screen is connected to an electrostatic screen s1, Fig. 7, between the coils p coupling the aerial and the feeder. A further screen s2 is connected to the mid-point of the aerial coil and a balancing impedance z inserted between said coil and earth so that the impedance of the aerial below the centre tapping of transformer p is equal to the impedance above that point. Specifications 130,490, [Class 40 (v)], and 344,783 are referred to.
Patent GB-628554-A (GB)
Title: Improvements in and relating to the charging of the cylinders of two-stroke internal combustion engines
IPC: F02B75/34
Filed: 1946-05-24
Abstract: 628,554. Cylinders of two-stroke engines. ARDEN, T. R. May 24, 1946, No. 15815. [Classes 7 (ii) and 7 (vi)] In an arrangement suitable for a miniature engine, the cylinder has inlet and exhaust ports 23, 26 extending round its periphery. The transfer passage from the crank-case is formed by grooves 24 in the bore. The cylinder is screwed into the crank-case which is closed by a screwedin plug 17, and has a flared part 170 provided with opposed lugs for attachment to a model aircraft. Mixture is drawn through a valve 41 in a hollow crankshaft, fuel being sucked from a detachable tank 29 as described in Specification 628,593. A screwed-in cylinder head has a securing rib 21 for engagement by a spanner.
Patent GB-1222861-A (GB)
Title: Improvements in extensible box pallets for the transport of goods
Inventor: WAITE WILLIAM
IPC: B65D19/12
Filed: 1968-04-02
Abstract: 1,222,861. Load handling pallets. RUBERY, OWEN & CO. Ltd. 8 April, 1969 [2 April, 1968], No. 15899/68. Headings B8H and B8P. An adjustable box pallet comprises a rectangular base frame with upstanding channel section corner posts 10 each to receive a foldable leg member having a lower section 14 pivoted at 15 to the post 10 and an upper section 16 pivoted at 17 to the lower section and at 18 to a gusset 19 secured to an upper corner casting 20. The upper and lower sections 14, 16 and the lower sections 14 and the corner posts 10 have, in the erected position, respective aligned apertures 23, 24, 26, 27 to receive locking pins 22, 25. In a lowered position the pins 22, 25 are removed and the upper and lower sections folded inwardly until the corner castings 20 rest on the upper end of the posts 10 wherein holes 27, 28 are aligned to receive the pins 25. The upper corner castings may be interconnected across the ends of the pallet by beams 21 and likewise the posts 10 by members 13. A panel 29 may be fixed to the ends of the pallet below the member 13.
Patent GB-628420-A (GB)
Title: An improved manufacture of catalysts
IPC: B01J21/14
Filed: 1947-06-17
Abstract: A silica-alumina gel catalyst suitable for use in cracking, reforming, isomerization, polymerization and alkylation of hydrocarbons is prepared by first forming a silica-magnesia hydrogel and then soaking the hydrogel in a solution of an aluminium salt, e.g. aluminium sulphate, the product being finally washed to remove the water-soluble magnesium salt formed in the process.  The catalyst is finally dried and activated, for example, by heat.  The silica-magnesia hydrogel may be washed prior to the soaking operation and the soaking operation may be effected at elevated temperatures and pressures.  By using a minor amount of aluminium salt a silica-magnesia-alumina gel is obtained.
Patent GB-575994-A (GB)
Title: Improvements in brakes
IPC: F16D65/22
Filed: 1943-10-02
Abstract: 575,994. Brakes. BENDIX AVIATION CORPORATION. Oct. 2, 1943, No. 16179. Convention date, March 8. [Class 103 (i)] In applying means for a pair of brake shoes comprising a lever pivoted on one shoe and a link extending between the lever and the other shoe, the pivot of the lever comprises a projection integral with the lever at the end thereof and extending through the shoe web. According to Figs 1, 2, the end of the lever 31 is bent to form a projection 34 extending through a hole in the web of the shoe 24. The link 32 is forked at both ends to embrace and engage the web of shoe 23 and the lever 31 respectively, the fork at the one end embracing also the web of shoe 24 whereby lateral displacement of the lever is prevented. A projection 39 extruded from the web of shoe 23 supports the link at that end and rattling of the link is prevented by contact of the release spring 33 therewith. In a modification lateral displacement of the lever is prevented by a cotter passed through the projection 34. In a further construction, Fig. 9, the link 32b is attached to the shoe 23b by projections 43, 45. In another construction, the link 32c is bent to the form shown in Fig. 10 at its left hand end which has a projection 47 extending through a hole in the web of the shoe 23c and which also is cut away as shown in Fig. 11 to engage the edge of the shoe web for transmitting' the thrust. One edge of the projection 47 is slotted to embrace the shoe web and thus to prevent lateral displacement of the lever.
Patent GB-1176316-A (GB)
Title: Improvements in or relating to Fluid Control Systems and Valves therefor
IPC: F16P3/22
Filed: 1968-04-04
Abstract: 1,176,316. Machinery safety devices; valves. NUMATICS Inc. 4 April, 1968 [4 April, 1967], No. 16213/68. Headings F2J and F2V. In a valve system controlling pressurization of a line 252 for actuating a fluid motor, e.g. of a punch press or a clamp, two pilot-operated relay valves 160, 162 in series in the line 252 are actuated to their " flow" positions by admission, of pilot pressure to chambers RV1A, RV2A by respective manual pilot valves 152, 150 which also admit, via time delay devices S1, S2, pilot pressure to chambers RV1B, RV2B to oppose that in chambers RV1A, RV2A, so that pilot valves 150, 152 must be operated substantially simultaneously to initiate operation, and must both be released to reset the system before a further operation can be initiated. Each time delay device comprises a restrictor TD1 and a free piston 204 in a cylinder 164. Initially, pilot valves 150, 152 are spring-urged to the position shown, admitting pilot pressure to chambers RV1B, RV2B and exhausting chambers RV1A, RV2A, valves 160, 162 connecting line 252 to an exhaust outlet. When valve 150 is operated, chamber RV1B is connected to exhaust and pilot pressure is applied to chamber RV2A, and, via restrictor TD1, to the top of the cylinder 164. After a short interval, e.g.¢ second, the piston 204 in cylinder 164 has been moved sufficiently to admit pilot pressure from the restrictor TD1 to the chamber RV1B. Unless valve 152 has been operated substantially simultaneously, the pressurization of RV1B prevents actuation of valve 160. Similarly, if valve 152 is operated first, chamber RV2B will be pressurized to block actuation of valve 162. Both valves 150, 152 must be released, to allow pistons 204 to return to the positions shown, before the system becomes effective for further operation. A modified system, (Fig. 1, not shown), has separate main and pilot pressure supplies instead of the single supply 170 of Fig. 4. One form of relay valve (Fig. 3, not shown), has an annular window (100) near one end to enable the position of the valve spool (86) to be seen. Spring-loaded ball detents (94) locate the spool (86) in one or other of its two positions. In Figs. 5-11 (not shown), a single unit, comprising a valve housing (180, 300, 302), a distribution housing (182), and a support housing (184) includes the whole of the system enclosed by line 172 of Fig. 4.
Patent GB-358072-A (GB)
Title: Improvements in or relating to air line lubricators
IPC: F16N7/34
Filed: 1930-05-27
Abstract: 358,072. Air-line oilers. WALKER, W. J., 26, 2nd Avenue, Parktown North, and GIMKEY, S. F., 8, Majestic Mansions, Empire Road, both in Johannesburg, South Africa.-(Assignees of Shell Co. of South Africa, Ltd. ; Union House, Simmonds Street, Johannesburg, South Africa.) May 27, 1930, No. 16364. Convention date, Jan. 9. [Class 12 (iii).] An air-line oiler comprises a tube 1 forming an oil reservoir supported concentrically by stops 3 within an outer tube 2 through which the air stream passes, the tube 1 having a piston 4 in the upstream end and a nozzle 5 containing a spring- loaded valve 6 at the downstream end. A Venturi tube 8 is adjustably screwed into the downstream end of the tube 2 around the nozzle 5, whereby the pressure difference between the two ends of the tube 2 causes oil to be forced through the nozzle into the air stream. The supply of oil may be regulated by adjusting the tube 8 or by adjusting a valve 13 in a byepass pipe 12. The tube 1 is charged with oil through a tube 11 fitted with a plug 10.
Patent GB-145455-A (GB)
Title: Improvements in or relating to portable respiratory apparatus
IPC: A62B7/10
Filed: 1920-06-18
Abstract: 145,455. Drõgerwerk H. & B. Drõger. Nov. 12, 1913, [Convention date]. Respirators. - In portable respiratory apparatus having a supply of compressed air or oxygen, a receiving bag and purifying means, these three parts are all connected to a single multiple - way piece which acts as a support for the whole without any auxiliary tubes or fittings. The multiple-way piece is shown at d, the cartridge chamber at a, the supply of oxygen or air at c and the receiving-bag at b. The breathing-tube e is connected to the cartridge chamber a. In a modification, this tube is connected directly to one branch of the piece d, the chamber a being fitted to the opposite branch and the bag b to the lower end of the chamber.
Patent GB-710544-A (GB)
Title: Improvements in one-revolution clutch-brake combinations
IPC: F16D67/02
Filed: 1952-07-01
Abstract: 710,544. One-revolution clutches. NAAMLOOZE VENNOOTSCHAP ONTWIKKELING- MAATSCHAPPIJ POLYNORM. July 1, 1952 [July 7, 1951], No. 16574/52. Class 80 (2) [Also in Group XXXIV] An internal expanding band clutch 4 and brake 5, carried by the rotatable driven member 2 of a one-revolution device, are identical, but with their tangentially-acting expanding levers 14 and operating toggles 16, 17 therefor arranged oppositely and on a common actuating shaft 20, turning of which from the full-line position, Fig. 2, to the dotted line position engages the clutch 4 with a continuously rotating driving member 1 whilst releasing the brake 5 from a fixed member 3 and vice versa. This engaging movement is effected by applying a light force P, Fig. 5, to collapse a stationary toggle 25 about the fixed axis of a spindle 35, thus moving radially outwards about a fixed pivot 29 on outwardly spring-loaded cam-shaped arm 28 bearing on a roller 22 on an arm 21 fast to the actuating shaft 20. The consequent engagement of the clutch 4 causes the roller 22 to complete its outward travel by riding over the cam-arm 28, rotation continuing until the roller 22 is struck back to its inner clutch-release brake-apply position by a stationary cam 34, Fig. 4, whilst a cam-profile 31 on the driven block 2 contacts a roller 33 to straighten the stationary toggle 25, moving the cam-arm 28 back to its idle position. The spindle 35 of the stationary toggle cam be turned manually to operate the toggle if required.
Patent GB-1356965-A (GB)
Title: Pharmaceutical composition
IPC: A61K31/40
Filed: 1971-05-24
Abstract: 1356965 Pharmaceutical compositions F ANTON-TAY 24 May 1971 [25 May 1970] 16591/71 Heading A5B Pharmaceutical compositions for the treatment of epilepsy, Parkinson's disease and behavioural disorders comprise a pharmaceutical carrier and an effective non-toxic amount of melatonin having the formula the composition either being in the form of a tablet or being encapsulated in a capsule.
Patent GB-594216-A (GB)
Title: Improvements in or relating to water-elevators of the wheel and bucket type
IPC: F04B19/14
Filed: 1945-06-29
Abstract: 594,216. Bucket-elevator apparatus. HICKS, W. H. June 29, 1945, No. 16599. [Class 102 (ii)] A water-elevator comprises an open-topped tank into which the top wheel dips. The wheel incorporates two spaced discs 1 secured on the rotating horizontal shaft 2 and a plurality of bars 14 secured to each disc, opposite bars being connected by cross-bar frames 15, 151 which constitute a wheel rim. An endless conveyer provided with buckets 20 is trained over the top wheel. The apparatus may be modified to be manually driven through gearing, or animal driven.