baber/WOPTO huggingface dataset:
Patent GB-656959-A (GB)
Title: Improvements relating to voice frequency oscillator-calling devices
Inventor: DORBEC LUCIEN
IPC: H04Q1/446
Filed: 1949-01-17
Abstract: 656,959. Voice-frequency signalling. SOC. ANON. DE TELECOMMUNICATIONS. Jan. 17, 1949, No. 1316. Convention date, Jan. 28, 1948. [Class 40 (iv)] [Also in Group XL (c)] In a voice-frequency ringer the same valve or system of valves is employed either as a generator of the signal frequency or as a receiver for that frequency, voice immunity being obtained in the latter case by the effect of currents of one frequency in the most important frequency range of speech. In the embodiment of Fig. 1, when operating as a receiver (switches in position 1), the valve  amplifies the signal currents which appear in the secondary winding of transformer T1, are rectified by rectifier network OX1 and operate relay REL. Transformer T1 is tuned to one of the most important speech frequencies, say 1000 c.p.s., and currents of that frequency if present are rectified by OX2 and applied as negative bias to the valve to reduce its gain and prevent operation of REL. When the device is used as a generator transformer T1 connects the grid and anode of the valve which operates as an oscillator at the signal frequency. In the embodiment of Fig. 2 (not shown), two valves are employed in cascade and the operation as a receiver is similar to that of Fig. 1. The selectivity is increased by a tuned feedback path between the two cathodes similar to that shown in Fig. 3. In the Fig. 3 embodiment the amplified and rectified ringing current is applied to the grid of the second valve as positive bias and the resulting substantial increase in anode current operates the normally unoperated differential relay REL. Currents of the guard frequency are amplified, rectified and applied as negative bias to the first valve to prevent false operation of REL which  remains back when the current in its upper winding is less than that in its lower winding. In Fig. 4 (not shown), a single valve is employed, the relay REL is connected as in Fig. 3, and the rectified signal and guard currents are applied as positive and negative bias respectively to the grid of the valve.
Patent GB-695004-A (GB)
Title: Improvements in or relating to stoker chain grate apparatus
IPC: F23H11/04
Filed: 1952-01-17
Abstract: 695,004. Travelling grates. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Jan. 17, 1952 (Feb. 13, 1951]; No. 1364/52. Class 51(i) As shown in Fig. 3 a grate bar for a chain grate comprises a substantially rectangular fuel-supporting portion 21 having a leading edge 22, a flange portion 23 extending at an angle from said leading edge, a plurality of web portions 28 depending from the grate bar and disposed in planes normal to said leading edge and flange portion, each of said web portions having a slot 30 formed in a plane spaced from and substantially parallel to said fuelsupporting portion, each of said slots opening at the end of the web remote from said flange portion, said slots being adapted to receive supporting elements of the grate chain, a lug portion 28a formed integrally with each of said web portions and said fuel-supporting portion, said lug portions being adapted to be detachably connected to links for imparting the drag of the grate chain to said grate bar. As shown in Fig. 1 the chain 10 of a travelling grate has longitudinally spaced, transversely disposed pivot pins 15 which engage loosely in the slots 30 formed in the web portions of the grate bars. Link elements 35 are connected in pairs to the ends of each of the pivot pins 15 and are also detachably connected to the respective web portions of the grate bars so as to transmit the pull of the chain to the bars. Each of the bars is removable from a point above the working surface thereof by initially tilting it about the associated pivot pin 15 to render the link elements 35 accessible, detaching the link elements from the web portions and then disengaging the slotted web portions from the pivot pin.
Patent GB-563726-A (GB)
Title: Improvements in or relating to cooking apparatus employing boiling burners
IPC: F24C15/10
Filed: 1943-01-29
Abstract: 563,726. Drip trays for cooking apparatus. DAVIES, E. S., and WELLS, F. G. Jan. 29, 1943, No. 1552. [Class 126] A drip tray for use with one or more burners is provided with one or more apertures therein, each having an upstanding flange providing a utensil support and surrounding or positioned above the burner whereby liquid running down the sides of a utensil resting on the flange is caused to fall into the tray and is prevented from reaching the burner. As shown in Fig. 1, the tray 1 has an upstanding flange 2 supporting a utensil 7 and surrounds a burner 4. Gases from the burner pass through apertures 9 in the flange or through recesses formed in the upper edge of the flange which is provided with a downturned lip 8 for directing liquid into the tray. Fig. 4 shows a drip tray 11 for a gas stove having a number of apertures 13 each provided with a flange 14 for supporting a utensil and arranged above a burner 12.
Patent GB-577079-A (GB)
Title: Improvements in staple driving machines
IPC: B30B1/04
Filed: 1944-01-28
Abstract: 577,079. Stapling-machines. GOODMAN, L. L., and VANDERVIEREN, F. A. J. Jan. 28, 1944, No. 1628. [Class 89 (iii)] A staple driving machine is provided with a spring guide plate co-operating with a flanged block to guide the staples and prevent them becoming buckled during driving. The guide block a is held by means of a pin b at the front of the magazine d. The spring guide plate consists of a horizontal portion d' which lies between the horizontal flanges a' of the guide block, and a vertical concave portion which lies between vertical flanges a<1>. When the staple is driven, each leg is guided between a lateral edge of the part d<1> and a flange a<1>, its bridge being guided and supported by the face of the plate, which yields to allow it to pass.
Patent GB-191961-A (GB)
Title: Improved collapsible trouser stretcher
IPC: A47G25/68
Filed: 1922-01-19
Abstract: 191,961. Ricketts, A. Jan. 19, 1922. Trouser stretchers.-A collapsable trouserstretcher comprises a pair of bars a, hinged at b and carrying at each end a pivoted plate h attached to a bar j carried by the gripping bars l. The bars l are slotted at m, m<1> for the wing-nuts q. the slot m being made long for dismantling. By moving the plates h on the rods j, swinging them about pivots i, and folding the hinged bars a, the stretcher is closed up. The wing-nuts q are provided with washers p which are maintained in position by spiral springs r. A pivoted catch c engages a pin f to keep the bars a in alignment.
Patent GB-980613-A (GB)
Title: Improvements relating to motor vehicles
IPC: B60S9/14
Filed: 1962-01-17
Abstract: 980,613. Positive clutches. L. GROSSMANN. Jan. 17, 1962 [July 12, 1961; Nov. 16, 1961], No. 1789/62. Heading F2C. [Also in Division B7] A vehicle propeller shaft 29 and transmission tail shaft 28 are externally splined at 33, 34 and are clutched together by a slidable internally-splined clutch sleeve 35. A spigot 31 on shaft 28 is supported in bore 32 in shaft 29 preferably with the interposition of bearing needles 82. In the forward position of the clutch sleeve 35 the transmission tail shaft 28 is declutched from the propeller shaft 29, and a gearwheel 36 on the sleeve meshes a wheel 21 to drive a shaft 20 of screw jacking mechanism.
Patent GB-121661-A (GB)
Title: Improvements in Level Indicators for Aeroplanes and the like.
Inventor: MARSHALL JAMES EDWARD
IPC: G01C9/20
Filed: 1918-01-31
Abstract: 121,661. Marshall, J. E. Jan. 31, 1918. Levels and clinometers for aircraft. The instrument consists of a transparent sphere 10 half filled with liquid, provided with graduations 14 and encircled by a graduated plate 12, which is arranged at right-angles to the plane of the graduations 14 and is bolted to lugs projecting from the sphere.
Patent GB-213045-A (GB)
Title: Improvements in or relating to lubricating devices employing fluid under pressure acting upon the lubricant
IPC: F16N7/34
Filed: 1923-01-20
Abstract: 213,045. Sheppard, H. B. Jan. 20, 1923. Lubricant conveyed by fluid. - Lubricant is supplied to a pipe. conveying air or other fluid through a nozzle c provided with a non- return valve e which is adapted to be opened by the external pressure of the nozzle of a lubricant supply pump or device inserted in an orifice g leading to the valve. The nozzle is mounted in a ring b secured between the flanged ends a of two sections of piping, and the valve e is positioned in a gland f.
Patent GB-1081642-A (GB)
Title: Edge connector
IPC: H01R12/82
Filed: 1966-01-14
Abstract: 1,081,642. Two-part couplings. UNITEDCARR. Inc. Jan. 14, 1966 [Jan. 15, 1965], No. 1900/66. Heading H2E. An edge connector comprises a resilient insulating body 14, having a contact-carrying aperture, and a surrounding jacket 12 which flexes opposite body walls inwards to grip a printed circuit board inserted in the aperture (Figs. 3 and 4, not shown). The body 14 and the jacket 12 may each be formed from two L- shaped parts fastened together by pins 42 to form rectangular members (Fig. 9, not shown) and the longer body walls can be pushed apart, for insertion of the board, by a tool (Fig. 5, not shown) placed behind ears 35 which project from the longer jacket walls. Uniform pressure along the board is achieved by silicone rubber pads 34 located along the walls of the aperture and by U-shaped cut-out portions 50 at each end of the longer jacket walls. The connector is provided with guides 17 and 18 which also support the board and ensure its correct insertion, and with projections 22 and 24 for mounting it on a support.
Patent GB-606829-A (GB)
Title: Improvements in pipe joints
IPC: F16L19/05
Filed: 1946-01-21
Abstract: 606,829. Pipe joints. STORRIE, S. Jan. 21, 1946, No. 1918. [Class 99 (i)] In a pipe joint of the type in which a pipe end is expanded to tapered form for compression between tapered components of the joint the tapered end is further expanded to form an out-turned flange whose outer face is engaged by a flat annular surface on a component of the joint and whose inner face does not abut against anything. Fig. 2 shows pipes 16, 17, the tapered ends 18, 19, of which engage a double-tapered ferrule 10. For compressing the pipe ends on the ferrule a gland 13, a sleeve 15, and a coupling nut 14 are provided. The out-turned flanges 20, being engaged on their outer faces by the plane ends of the sleeve 13 and gland 13 respectively, prevent withdrawal of the pipes from the joint. The various components are so dimensioned that the inner faces 20a of the flanges do not abut, this allowing further tightening of the joint after it has become loose through use. The sleeve 15 has an expanded part 22 at one end and an annular projection 21 at the other, these parts serving to limit the movement of the nut 14 on the sleeve.
Patent GB-283970-A (GB)
Title: Improvements in or relating to the purification of molasses
IPC: C12N1/18
Filed: 1928-01-20
Abstract: 283,970. Aktieselskabet Dansk Gaerings Industri, (Assignees of Lesienicka Fabryka Drozdzy prasowanych i spirytusa Spolka Akcyjna (Lesienitzer Spiritus und Presshefcfabriks Akt.-Ges.), and Simmer, F.). Jan. 21, 1927, [Convention date]. Bacteria, cultivating.-Bacterial isolated from putrescent organic substances particularly beetroots or waste molasses are cultivated on a nutrient substratum containing betaine or betaine hydrochloride. Thus, a species of an anaerobic spore-producing bacterium is obtained having the form of very fine rods which frequently occur in star-shaped groups, and, except for their form, seem to be closely related to the hay bacillus group.
Patent GB-1019754-A (GB)
Title: Process and apparatus for producing ribbon or sheet glass
IPC: C03B18/20
Filed: 1964-01-16
Abstract: <FORM:1019754/C1/1> In a process for the production of glass in sheet or ribbon form by the particular floatation technique described in Specification 1,019,753, the thickness of the ribbon is decreased by applying a greater pressure over a central portion of the glass than the marginal portions, and the width of the ribbon is allowed to increase under the application of the greater pressure whilst the area of application of the greater pressure is extended after the ribbon width has increased.  In the modified apparatus for performing the process of the present invention the downwardly extending peripheral wall 40 has a front wall of width less than the width of the glass ribbon, and two side wall portions which at first diverge from each other in the direction of movement of the ribbon and thereafter remain parallel with each other.  The diverging portions of the side walls are so constructed and arranged to maintain the extending marginal edges of the glass ribbon at a substantially uniform width beyond the side walls along the active length of the chamber.
Patent GB-647801-A (GB)
Title: Improvements in the mounting of impression plates on platens
Inventor: NASMITH JOHN IRVING
IPC: B41F1/26
Filed: 1948-01-22
Abstract: 647,801. Cutting-out presses. VICKERSARMSTRONGS, Ltd. Jan. 22, 1948, No. 1989. [Class 31 (i)] [Also in Group XVI] A cutting out press has an impression plate which can be moved from its normal position against the face of an oscillating platen to a raised position to afford access to the surface of the platen by a mechanism comprising levers, pivoted in the platen, having supports which engage guiding surfaces provided on the impression plate. The impression plate 1 is moved to the raised position, Fig. 2, by the operation of levers 10, 11, and has end flanges 2 which rest over the sides of the platen 3. The impression plate 1 is guided for a parallel movement with respect to the plane of the platen by a central slot 4 and pin 5 and, at each end of the flanges 2, by tranverse inwardly-extending open slots 6 in which pins 7 carried on the ends of levers 10, 11 engage and impart the shifting movement, The movement is effected by the operation of a handle 14 secured between extensions of each pair of levers 10. A spring-loaded catch 15 locks the levers and the impression plate in the rest or raised position by its engagement with notches in a sector 16 secured on the side of the platen 3. Release is effected by rotating the handle 14 which is connected to the catch and can be turned relatively to the levers 10. In the normal position the pins 7 are at the outer end of slots 6 but in the raised position they slide inwardly of the machine and out of the slots so that the impression plate may be lifted from the platen. In order to prevent operation of the machine whilst the impression plate is in the raised position an interlocking device is connected between one lever 10 and a machine operating pedal 22, and comprises a link 20 connecting the lever 10 with one end of a lever 18 pivoted about a pin 17 so that when the impression plate is raised the other end 18a of the lever 18 obstructs the path of a lever 19 secured on the shaft 21 of the operating pedal 22.
Patent GB-370530-A (GB)
Title: Improvements relating to the manufacture of cementitious materials
IPC: C04B28/02
Filed: 1931-01-21
Abstract: Pipes, sheets, slates boards or moulded articles are made from a waterproof material prepared by mixing a bituminous emulsion stabilized by any known emulsifying substance with Portland or any hydraulic cement or plaster containing fibrous materials preferably asbestos.  Sand, pigments, &c. may also be included. Examples of emulsifying agents are glue, soap, algin, clays, or gum arabic.  The mixing of bituminous material and cement is carried out in a hollander of the type used in paper making.  The material may be reinforced with metal, or applied on a metal backing.  The products are preferably matured under pressure in an autoclave.  The composition may be used for roofing purposes in which case it is reinforced by sheet metal, which may have keying protuberances formed by punching or pressing out tongues of metal from the sheet, which is then coated with bitumen and the composition applied by pressing.
Patent GB-764449-A (GB)
Title: Stereoscopic plotting instrument with movable photocarrier
IPC: G01C11/00
Filed: 1955-01-24
Abstract: 764,449. Stereophotogrammetric apparatus. ZEISS-STIFTUNG, C., [trading as ZEISS, C. [Firm of]]. Jan. 24, 1955 [Feb. 20, 1954], No. 2021/55. Class 97(1) In a stereophotogrammetric instrument having a photo carrier movable relative to parallex marks correction of the co-ordinates of movement for errors arising, for example, from using central instead of orthoganal projection or from camera tilt in taking the photographs, is automatically effected by a computer fixed connected to the photocarrier, the measuring values being set in the computer by a parallelogram linkage connecting the photocarrier to a fixed point of the instrument and formed as a pantograph connected to a movable number on the computer. As shown the carrier 1 for photographs 2, 3 has fixed thereto a member 15 connected by a parallelogram linkage 10, 11, 12 to bars of equal length 6 and 7 pivoted at 13, 14 to the bars 10, 11 and 12 and at 8 and 9 to a fixed part of the instrument. The bar 9 is extended beyond the part 14 to a part 17 pivotally connected to a bar 18 pivoted at 20 to a bar 19 parallel to bar 7 and pivoted to an extension of the bar 12. Thus as the carrier 1 is moved for plotting about the pivots 8 and 9 the linkage operates so that point 20 executes a similar movement on a reduced scale, the points 9, 16 and 20 remaining colinear. Movement of the point 20 is transferred to a compound slide resolving the movement into x and y components are fed to each of two computers which, in the apparatus shown correct the co-ordinate value for errors arising from using central instead of orthoganal projection. The corrected co-ordinate values are automatically fed from the computers to a compound slide 52 carrying a plotting pencil. The computers are identical and are each designed to solve an equation of the form a/m.e = c/(d- + e). As shown for the x co-ordinate a bar 31 has slidable on it a bar 39 perpendicular to bar 31 sliding also on bar 32 hinged at one end to the bar 31, the interapt of the bars 31, 32 or bar 39 giving the value a. The x coordinate is fed into the computer by a bar 21 actuated by the compound slide 22 and sliding along the bar 31. Pivoted to the bar 21 is a link having a guideway 36 in which engages a pin on a compound slide bearing on the bar 32 and engaging a bar 53 slidable in a compound slide 42 which slides along the bar 31 and maintains the bar 53 at rightangles thereto. When the angle of the guideway 36 to the bar 31 is suitably adjusted the movement of the bar 53 perpendicular to bar 31 gives the correction to be applied to the x coordinate which correction is fed directly to the slide 52 by a gear 54, flexible lead 60, gear 61 and rack 55 connected to a bar 51 engaging the slide 52.
Patent GB-119481-A (GB)
Title: Improvements in Tobacco Pipes, Cigar and Cigarette Holders.
Inventor: FULLER WALTER
IPC: A24F1/22
Filed: 1917-02-13
Abstract: 119,481. Fuller, W. Feb. 13, 1917. Tobacco pipes and cigar and cigarette holders.-The end of the mouthpiece is formed with countersunk transverse holes A and fitted with a plug B to regulate the passage of smoke through the stem.
Patent GB-267474-A (GB)
IPC: H01F17/06
Filed: 1927-01-25
Abstract: 267,474. Dubilier Condenser Co. (1925), Ltd., (Assignees of Houck, H. W.). March 15, 1926, [Convention date]. Inductances. - A toroid coil wound on an iron core comprises a closed magnetic circuit, the winding being arranged to prevent magnetic leakage and inherent capacity. As shown, the terminals 2, 5 of the coil are widely separated from each other, and winding sections 3, 4 are located in parallel between the terminals. The winding is such that opposite polarities are produced at its adjacent ends.
Patent GB-304916-A (GB)
Title: Improvements in or relating to thermostatically controlled urns for heating liquids
IPC: A47J27/21
Filed: 1928-01-24
Abstract: 304,916. Lyons & Co., Ltd., J., and Salmon, J. Jan. 24, 1928. Set-pans. - An urn 4 is mounted in a jacket 3 containing heat - transmitting liquid heated for example by a steam coil 2, the heating being controlled by a thermostat the sensitive element 5<a> of which extends into the urn 4 and may, as shown, be concentric with the urn
Patent GB-1242045-A (GB)
Title: Method and device for measuring specific gravities of suspension
Inventor: FAJANS JACK
IPC: G01N9/26
Filed: 1969-01-15
Abstract: 1,242,045. Measuring specific gravity of suspensions. J. FAJANS AND J. E. NANKIVELL. Jan.15, 1969, No.2295/69. Heading G1S. The liquid suspension which may be a paper stock is moved from a tank 14 through a rectangular system of connected pipes 1-4 and an outlet valve 12 by a pump 13 which maintains the liquid flow pressure above 100 lbs. sq. inch. The arrangement shown divides the continuous flows of suspension into two branches of equal flow velocity and directs them in opposite vertical direction in the pipe 1. Water filled pipes 5 and 6 having holes 7, 7<SP>1</SP> situated within the vertical section 1 are connected together through a valve 21, and an inverted U tube 20 containing ethylbenzene provides interfaces 22 with the water so that when the suspension is being continuously pumped through the pipes 1-4 the pressure differences between the holes 7, 7<SP>1</SP> may be measured and related to the specific gravity of the liquid suspension. In a modification the pipe 2 may be omitted and the pipes 3 and 4 serve as separate outlets.