baber/WOPTO huggingface dataset:
Patent GB-486751-A (GB)
Title: Improvements in or connected with locks and latches
IPC: E05B63/18
Filed: 1938-04-14
Abstract: 486,751. Night latches. NICO MANUFACTURING CO., Ltd., and NIEDERDRENK, G. April 14, 1938, No. 11528. Addition to 477,079. [Class 44] In a night latch, the bolt of which is held retracted when pressed by hand past the normal retracted position as in the parent Specification the bolt is automatically locked in the shot position, on closing the door, to prevent withdrawal by pressure applied to its nose. A plate E, pivoted at E<4> to the bolt 3, assumes the position shown when the bolt has been retracted by the follower 14, and the knob or key released, the bolt being returned to its outward position by the spring 12, and the pin 15 of the follower engaged in the recess C<1> of the bolt and the recess E<1> of the plate E. During the closing of the door, the bolt nose 2 is pressed in by the striking plate, and the pin 15 disengaged from the recesses C<1> and E<1>, the spring 16 rotating the follower until the pin 15 rests on the inclined upper edge of the plate E, pressing it down immediately the bolt is fully shot, so that its lower end E3 engages the frame 9. When the knob or key is turned to withdraw the bolt, the pin 15 in passing over the nose E<6> of the plate E into the recesses E<1> and C<1> disengages the lower end E<3> of the plate E from the frame 9. The recesses E<1> and C<1> are so shaped that the pin 15 remains in them when the knob or key is released, thus holding the end E<3> of the plate E clear of the frame 9 until the bolt is again pressed in by the striking plate. A second pivot for the plate E may be provided on the bolt so that the mechanism may be reversed.
Patent GB-270486-A (GB)
Title: High tensionless wireless receivers
IPC: H03F3/02
Filed: 1926-05-29
Abstract: 270,486. Sparey, W. W. May 29, 1926. Thermionic amplifiers and detectors. -In a receiving set without high tension battery two valves are employed, the grid of the second valve V<1> being connected through a grid leak o to the filament of the first valve V, and through a condenser c<1> to the plate of that valve. The plate circuit of the second valve is coupled through an inductance l' to a resonant combination l, c, in the plate circuit of the first valve.
Patent GB-428498-A (GB)
Title: Improvements in or relating to light filters for electric lamps
IPC: F21V29/15
Filed: 1934-04-17
Abstract: 428,498. Liquid lenses. BRAUNE, A., Artern, Saxony, Germany. April 17, 1934, No. 11603. [Class 75 (ii)] The lower end of an electric lamp bulb n is enclosed by a lens-shaped liquid container a which is separated by an air circulation space f from an inner air-evacuated container d the lower portion of which is in contact with the end of the bulb and the middle and upper portions of which are separated from the bulb by a second air circulation space. In a modification the container d is ring shaped. The container a may be flattened as shown at t, it may be bulged laterally and drawn in centrally as shown at u, whilst the liquid may consist of brine and may be coloured. The container a is fitted with a charging plug c and is connected to the container d by fusion or screwing, air holes being provided at g, h. These two containers may be suspended by cords or chains w or they may be supported on the bulb n by means of a screwedin glass or porcelain cover i or a metal cap k, provided respectively with rubber or like insulation l, m and air openings q, r. A reflector v also may be provided.
Patent GB-215787-A (GB)
IPC: H04B1/12
Filed: 1924-05-10
Abstract: 215,787. British Thomson-Houston Co., Ltd., (Assignees of Alexanderson, E. F. W.). May 11, 1923, [Convention date]. Addition to 187,986. Directive signalling; thermionic heterodyne receivers.-Relates to highly-directional receiving apparatus similar to that described with reference to Fig. 3 of the parent Specification in which rectified heterodyne currents from two mutually perpendicular directional aerials are coupled respectively to the grid and plate circuits of a thermionic valve, a phase rotator and audio-frequency tuned circuit being provided on the grid side while a telephone or like receiver without a high-tension battery is inserted in the plate circuit. No signal is heard unless the grid and plate potentials agree in phase, and the device is consequently highly directional. The present Specification describes the use of a vertical aerial 12, Fig. 1, coupled to the plate circuit in series with the loop aerial 13, the resulting directional effect being represented by the polar curve A, Fig. 3. The loop aerial, with polar curve B, is also coupled to the grid circuit, and the resultant effect on the receiving apparatus 17 varies with direction as shown by the shaded curve C, which is similar to that given by a wave antenna one wave-length long. Two such systems may be combined by applying the oscillations derived from them to the grid and plate respectively of a third similar system. Or a wave antenna may be coupled to the plate circuit while a loop antenna is coupled to the grid circuit. The Specification as open to inspection under Sect. 91 (3) (a) comprised also the subject-matter described with reference to Figs. 3 and 4 of the parent Specification. This subject-matter does not appear in the Specification as accepted.
Patent GB-847107-A (GB)
Title: Means for determining the depth of fluent material in a container
Inventor: WILLIAMS STANLEY JAMES
IPC: G01F23/26
Filed: 1957-04-10
Abstract: 847,107. Electric tests. FIELDEN ELECTRONICS Ltd. June 16, 1958 [April 10, 1957], No. 11686/57. Class 37 Apparatus for determining the depth of fluent material in a container comprises an electrode in the container which forms, with the container, a capacitor whose capacitance depends upon the depth of material in the container, means for alternately charging and discharging the capacitor at a constant frequency and over a pre-determined voltage range and means for measuring the mean charging current. As shown, an electrode 2, axially disposed in an earthed cylindrical container 1 holding a fluent material 3, is alternately connected to opposite poles of a d.c. source applied at terminals 6, 7, through two rectifier bridges 19, 20, which are operated as high-speed switches by the application to them of H.F. 'voltages of equal magnitude and opposite phase, derived from an oscillator 21. The electrode 2 charges and discharges during alternate halfcycles, the mean charging current being indicated by an instrument 33, which is zero-adjusted when the container is empty by adjusting the wiper 17 of a potentiometer 29 across the supply. Leakage currents due to the periodic reverse biasing of networks 19, 20 are off-set by the leakage current through a dry contact rectifier 30 connected between positive terminal 6 and network 19. The terminals 6, 7 may be energised from an A.C. source of constant RMS value and frequency much lower than that of the output of the oscillator 21; in this case the rectifier 30 is omitted. If the material 3 is electrically conductive, electrode 2 is covered with a sleeve 36 of insulating material. The switching circuitry may be contained in an earthed, hermetically sealed housing integral with the top of electrode 2.
Patent GB-553906-A (GB)
Title: Improvements in or relating to the breech mechanism of apparatus for the generation of fluid pressure by cartridge ignition
IPC: F41A3/04
Filed: 1941-09-12
Abstract: 553,906. Breech mechanism for cartridge ignition. BENDIX AVIATION CORPORATION. Sept. 12, 1941, No. 11732. Convention date, Sept. 12, 1940. [Classs 92 (ii)] [Also in Group XII] Apparatus for the generation of fluid pressure by the ignition of explosive material in cartridge form contained in a chamber 15, has a hinged breech block 18 locked to a leg 23 by a lug on a bolt 21 rotated by a handle 22. The arrangement is such that the handle is turned in one direction through about 90 degrees to permit the lug to move away from the leg to permit a partial opening only of the block for venting the gases, rotation of the handle in the opposite direction through about 45 degrees being necessary to clear a second leg 42 to permit full opening of the block about its hinge 19 and extraction of the spent case. The Specification as open to inspection under Sect. 91 also describes with reference to Fig. 11 (Cancelled) electric firing mechanism in which a part of the firing circuit is opened and closed by a cam operated laterally swinging plate 61 to correspond with unlocking and locking movements of the handle 22: This subject-matter does not appear in the Specification as accepted.
Patent GB-1150538-A (GB)
Title: Decomposition of Calcium Nitrate
Inventor: DELASSUS MARCEL
IPC: C01B21/26
Filed: 1968-03-11
Abstract: 1,150,538. Nitrogen dioxide; calcium carbonate. SOC. CHIMIQUE DES CHARBONNAGES S.C.C. 11 March, 1968 [13 March, 1967], No. 11814/68. Heading C1A. Nitrogen dioxide and calcium carbonate are prepared by heating calcium nitrate in a stream of carbon dioxide at 440-750‹ C. The reaction is preferably carried out in the presence of an inert porous carrier which is solid at the temperature employed, e.g. CaCO 3 . The calcium nitrate is either sprayed as a solution on to the carrier which is at a temperature between 500‹ and 600‹ C. or is mixed with a calcium carbonate carrier at a temperature of 50- 60‹ C., dehydrated at a temperature of 160‹ to 250‹ C. and heated in the presence of carbon dioxide at 500‹ to 600‹ C.
Patent GB-122132-A (GB)
Title: Letter-sheets and the like.
Inventor: HEALY GEORGE FRANK
IPC: B42D15/08
Filed: 1918-07-19
Abstract: 122,132. Healy, G. F. July 19, 1918. Letter-sheets.-A letter-sheet 1 is perforated at 3, and has one half of each side flap 2 gummed at 4 outside the perforations 5. A cut-out 7 is formed in the lower part of the sheet, through which the address, writ-ten in the space 6, is visible when the sheet is folded.
Patent GB-328428-A (GB)
Title: Improved means for securing glass globes to carriers
IPC: F21V17/16
Filed: 1929-04-17
Abstract: 328,428. Fairlie, T. W. April 17, 1929. Securing globes to holders.-In a globe holder in which the lip of the globe, is engaged by an open expansible resilient ring b provided with overlapping ends which are bent outwardly to form radial finger pieces h projecting through a slot d in the skirt c of the holder a and with two or more outwardly bent loops j which project through further slots e in the holder and constitute supporting arms, the ring is not anchored to the holder, is free to expand radially in all directions, and does not make frictional contact with the inner face of the holder when being expanded. The finger pieces h may be further bent to form eyes i.
Patent GB-576880-A (GB)
Title: Improvement in and relating to aromatic amine-aldehyde resinous products
IPC: C08K5/103
Filed: 1943-07-21
Abstract: Esters of chloracetic acid and mono-, di- or tri-ethylene glycol or tri-methylene glycol are prepared by heating chloracetic acid and the corresponding glycol in an open flask at 125 DEG  C. for 12 hours. The mixture is poured into water and neutralized with sodium carbonate.  The ester is washed with water, dried over sodium sulphate and heated at 100 DEG  C. under 20 mm. pressure to remove volatiles.  The esters are used as plasticisers and modifying agents for aromatic amine aldehyde resins. Specification 576,836 is referred to.
Patent GB-101700-A (GB)
IPC: B26F1/38
Filed: 1916-08-22
Abstract: 101,700. Maimin Co., H., (Assignees of Maimin, D. S.). Oct. 4, 1915, [Convention date]. Cutting-appliances. - A hand-directed motordriven machine with vertical reciprocating blade for cutting cloth is provided with a guard made in two parts 10, 11 pivoted to the support so that they may be swung away from the blade to expose the edge thereof for sharpening. The stripper foot is formed in two parts 17, 18, one carried by each part of the guard, which engage the cloth on opposite sides of the line of cut; one of the parts may be extended to form a guide finger. The stripper foot embraces the blade 5 and the standard 2 and bears on the cloth in front of the blade and behind the standard. The guard members are pivoted to a carrier 7, which embraces a rack 6, secured to the motor frame, and is vertically adjustable thereon by means of a spring catch.
Patent GB-1452800-A (GB)
Title: Tool adjusting system for a machine tool
IPC: B23Q15/00
Filed: 1974-03-18
Abstract: 1452800 Machine tool control of dimensions CROSS CO 18 March 1974 [16 May 1973] 11916/74 Heading B3B [Also in Division G3] The position of a tool, e.g. in a boring machine is continuously adjusted in accordance with the dimensional error in a workpiece, measured after the workpiece has been machined. As shown the error at 30, measured, e.g. using air gauge, is an analogue signal dependent upon the magnitude and direction of the error, which is sampled, memorized on a capacitor 40 and compared in machine tool logic 48 with preset error limits. If the error is within these limits, a tool position adjusting motor 54 is energized in a forward or reverse direction, according to the direction of the error, so that the error is eliminated in the next workpieee. If the error is outside the limits for a given number, e.g. three workpieces, motor 54 is energized, the system thus compensating for progressive tool wear but does not respond to isolated errors for example, due to material hardness. The logic 48 is inhibited unless the tool is in a non-working position, under manual control or within preset tool adjustment limits as set by limit switch 70. Potentiometer 62, also driven by the tool adjusting motor 54, provides a signal dependent upon the tool adjustment made, that is fed back to machine logic 48 to be compared with the desired tool position change. Details of the tool adjustment are given (see Division B3).
Patent GB-270897-A (GB)
Title: Self-doffing mechanism for spinning, twisting and like frames
IPC: D01H1/36
Filed: 1926-05-07
Abstract: 270,897. Lambert, O. May 7, 1926. Doffing-arrangements; spindle-apparatus. - A self-doning mechanism for spinning, twisting, and like frames comprises a vertically-movable lifter plate Lp, Fig. 1, carrying a spindle-bearing member N, boxes B, B<1> to receive the full bobbin and to carry an empty bobbin, means, e.g., a hand-wheel W, Figs. 5 and 7, and rack-and-pinion mechanism R, Pg to reciprocate the plate Lp horizontally to bring the bearing-member N and the boxes B, B<1> successively into register with the spindle Sp, and means, e.g. the lever l, for transferring an empty bobbin from the box B<1> to the spindle. The bottoms of the boxes B are hinged and may be dropped simultaneously to discharge the full bobbins. In the spinning position, the lifter plate. Lp is supported on lifter rails Lr having locking lugs X, the spindle Sp engaging in the bearings N. When doffing, the plate Lp is lowered to disengage the spindles Sp from the bearings N, the rails Lr are then further lowered and the plate Lp is then free to be moved horizontally on to the slideways Q, Fig. 7. On moving the plate Lp the full bobbins fall automatically into the boxes B, Fig. 3, and then the catch gb is tripped by the pins gc, gd and the arms l are rocked to lift the empty bobbins from the pegs p on the spindles Sp, Fig. 4. The arms ga, l are reset by the cam Gp on moving the plate Lp back so as to be raised by the rails Lr into the spinning position. The vertical movements of the lifter plate Lp are effected by the rotation of the chain pulley H, Fig. 5, controlled by the chain c from a heart cam. The handwheel HW contains a .quick-thread screw attached to the chain c whereby the chain may be slackened, when the catch r on the hand lever L may bemoved to the slot s to lower the plate Lp into the doffing position. The bobbins are braked by ropes R<1> weighted at O and connected to a sliding bar r<1> which may be set by a rack z<2> and pinion: z<1> to adjust the brakes throughout the machine. When the lifter plate is lowered the pin T, Fig. 11, trips a detent t to release a ratchet t<1> on the hand wheel Z when a weight drives the rack z<2> to remove the ropes R<1> from the bobbins.
Patent GB-1508174-A (GB)
Title: Folding beds
IPC: A47C19/12
Filed: 1975-03-21
Abstract: 1508174 Folding beds TIYUNG CHEN 21 March 1975 11988/75 Heading A4J The mattress support 1 of a folding bed is moved vertically downwards relative to the base 7 as the support is folded, the base being provided with support legs 8 having pins 10 engaging in slots 11  on two upwardly pivotable end sections 6 of the mattress support.
Patent GB-115992-A (GB)
Title: Improvements in or relating to Moving Stairways, Switchback Slides and Amusement Devices.
Inventor: PICKARD HAROLD
IPC: A63G7/00
Filed: 1917-08-21
Abstract: 115,992. Pickard, H. Aug 21 1917. Railways and tracks for recreation.-An amusement device comprises moving stairways a, b, c, d provided with seats 1 which are tilted automatically on the upper horizontal run to tip the passengers into the mouths n, o, p, q of the shoots e, f, g, h through which they slide to the lower part of the structure where conveyers m are provided for their removal. Each seat 1 is pivoted in a frame s and is supported by a bolt 5 resting on a pivoted plate 7 which is withdrawn when engaged by striker plates on the staging. A spring returns the seat to horizontal position.
Patent GB-778389-A (GB)
Title: Improvements in and relating to means for supporting galleries and workings in mines
IPC: E21D15/60
Filed: 1954-04-26
Abstract: 778,389. Mine roof supports. SOC. BELGE DE MECANISATION. April 26, 1954 ,[Jan. 22, 1954], No. 12012/54. Class 20(2)  A support for mine roofs comprises a frame 3 having two planes 2a, 2b inclined towards one another on which are two wedges 4a, 4b held apart by a rod 5 bearing against the wedge 4a and having a frusto-conical end 5b secured in the wedge 4b by a pin 7 which is driven out to release the support. The pin 7 has a covered part which drives a saddle piece 9 against a flat 5c on the rod 5.
Patent GB-130949-A (GB)
Title: Improvements in Devices for Holding Cutting Tools During Sharpening.
Inventor: FAURE LOUIS
IPC: B24B3/38
Filed: 1919-05-14
Abstract: 130,949. Faure, L. May 14, 1919. Work-holders.-A device for holding planes, gauges, chisels, &c. during sharpening comprises a bar a having at one end a handle b and at the other end a gudgeon c located in an aperture d in the frame e of the grindstone, and two cheeks j formed thereon adapted to receive a cylindrical plug k. This has two arms l each carrying, by means of a pin m, a jaw n; the plane &c. o is held by the jaws and is set to give the correct angle to the cutting-edge by means of a bolt s carried by the core, and held in position by a nut t engaging the cheeks. In operation, the necessary pressure and the motion to and fro across the grindstone are given by hand by means of the handle b; when not in operation, the bar a is retained out of position bv a rod h. Blades, irons, &c. may also be held during sharpening by a jaw u cast in one with one of the arms l and having a clamping-plate and screw v.
Patent GB-208687-A (GB)
Title: Improvements in and relating to heaters
IPC: F23K5/20
Filed: 1923-05-07
Abstract: 208,687. Morse Dry Dock &. Repair Co., Inc., (Assignees of Strachen, C., and Irish, D. J.). Dec. 20, 1922, [Convention date]. Void [Published under Sect. 91 of the Act]. Plate apparatus.-A heater for use with fuel oil comprises sets of alternate passages for the two heat-exchanging fluids and a central remov. able core which forms one wall of one set of passages. In the example two cross sections of which are shown, one set. that for oil, comprises radial passages 11 in communication with one another alternately at the top and bottom as through passages 12, Fig. 2. The cross area of the passages may decrease from the inlet 14 to the outlet 15. These passages are closed at the inner ends bv the removable core 5. The succssion of segmental chambers 16, communicate with one another by the ports 20 at top and bottom and the flow of the, media is arranged in counter-current.
Patent GB-261990-A (GB)
Title: Process and apparatus for the manufacture of carbon disulphide
IPC: C01B31/26
Filed: 1926-05-12
Abstract: 261,990. Stephens, A. J., (Zahn & Co. Bau Chemischer Fabriken Ges.). May 12, 1926. Distilling carbon bisulphide. - Crude carbon bisulphide is passed through a siphon 12, Fig. 4, to a still 13, the distillate passing to a cooler 20, the remaining solution of sulphur. in carbon bisulphide being led to a funnellike container 14 in which molten sulphur is separated from the carbon bisulphide and sulphuretted hydrogen. The solution of sulphur in carbon bisulphide as it passes down the sides 16, Fig. 5, of the funnel in a tortuous path is evaporated, the gases passing through outlets 17 to the cooler 20 while the sulphur leaves by means of a siphon device 18 in the stem. The carbon bisulphide from the cooler is freed from last traces of sulphuretted hydrogen by being sprayed in a separator 23 containing pure'boiling carbon bisulphide and; is finally collected in a cooler 25.
Patent GB-143707-A (GB)
Title: Improvements in and relating to drying machinery
IPC: F26B11/02
Filed: 1919-05-16
Abstract: 143,707. Short, A. A., and Watkins, W. G. May 16, 1919. Continuous discharge apparatus, rotary. - Relates to drying-apparatus of the type in which heated air or gas is passed through a rotating cylinder, means such as a valve being provided in order that part of the gas may be passed through the cylinder in contact with the material to be dried. According to the present invention, the valve has a poppet or mushroom head in order to deflect the gas smoothly as it passes from an inner axial chamber to an outer chamber or into contact with the material. The rotating cylinder 1 has an axial conduit 4 which receives heated gas from a flue 5 and is connected by passages 11 with an outer conduit 10 of the cylinder by which the gas passes backwards into a flue 16. The material to be dried enters a hopper 6 and is fed by a conveyer 7 into the space 8 between the conduit 4 and the inner wall 9 of the conduit 10. An axial valve controlled by a screw 14 closes the end of the conduit 4, and its head 12 is so shaped as to direct the hot gas smoothly from the conduit 4 into the passages 11 and therefore into the conduit 10. By turning the screw 14, the valve may be opened in order to permit an adjustable proportion of the gas to pass through the material and the space 8.
Patent GB-180182-A (GB)
Title: Improvements in and relating to davits for ships' boats
IPC: B63B23/04
Filed: 1921-04-29
Abstract: 180,182. Marks, E. C. R., (Soc. Anon. Italiana G. Ansaldo & Co.). April 29, 1921. Davits.-In davits of the quadrant type, the toothed rack is given the profile of the Delauney curve i.e. the curve described by the focus of an ellipse rolling on a straight line. The quadrant may be of elliptical or circular form but, in either case, the guided centre is arranged eccentric to the foci or centre as the case may be.