baber/WOPTO huggingface dataset:
Patent GB-184901-A (GB)
Title: Improvements relating to surveying instruments
IPC: G01C5/00
Filed: 1921-05-24
Abstract: 184,901. Lavaud, D. S. de. May 24, 1921. Road-contouring apparatus; course-recording apparatus.-A portable topographic surveying instrument comprises in combination an altitude measurer, a real-distance measurer, an horizontal - distance measurer operated from these, an azimuth measurer, and devices for recording t h e measurements graphically. A cable 1 is initially wound on a drum 2 acted upon by a winding-spring 3, and passes around pulleys 20, 17, 16, and through an eyelet at the end of a lever 5, which is secured to a shaft 6 upon which the pulley 16 is loosely mounted. The pulley 20 is secured to a shaft 21 connected to an eccentric pawl 22 through a ball ratchet device 23 so arranged that the pawl 22 is unaffected bv rotation of the pulley 20 during unwinding of the cable. In the normal use of the instrument an assistant operator holding the end of the cable walks away from the instrument until he reaches some point to be indicated on the plan, thus unwinding the cable. Then, the operator holding the instrument, in horizontal position and turning a milled stud 9 on the end of the shaft 6 to place the lever 5 in the direction of the stretched cable, walks towards the assistant operator. As the cable is thus rewound the pulley 20 rotates and the pawl 22 moves a ratchet-wheel 26 one tooth forward at each rotation. The wheel 26 drives frictionally a wheel 27, formed with a sleeve carrying a cam 31 which, once in each revolution raises a rod 33 against the action of a spring 36, Fig. 3, and through ratchet mechanism imparts a rotation of definite amount to a wheel 39 bearing against a recording-drum 14, thus rotating this drum in contact with a fixed pen 59 in accordance with the distance traversed. The movements of the lever 5 with changes of altitude are transmitted by a gear-wheel 10 on the shaft 6 to a gear-wheel 11 secured to a frame 12 supporting the wheel 39 thus varying the plane of this wheel and imparting to the drum 14 axial movements in proportion to the changes of altitude. The wheel 10 is formed with an eccentric mortise 41, Fig. 3, in which moves a stud 42 carried bv the wheel 27 in order to vary the position of frictional engagement with the wheel 26, thus resolving the real distance measured by the rotation of the wheel 26 into the horizontal distance measured by the rotation of the wheel 27 transmitted to the wheel 39. Movements in azimuth are recorded by a fixed pen 60 on a second axially-movable drum 51 against which bears a wheel 50 driven from the wheel 26 similarly to the wheel 39, the frame carrying this wheel 50 being connected through gearing to a shaft 45 carrying the compass. The drums 14, 51 are mounted on radiallyarranged rollers 61. To enable a single operator to use the instrument to survey the course of a stream, the cable may be wound on a drum 64, Fig. 3, and engage the pulley 20 only, its free end being fixed near the starting-point of the survey.
Patent GB-1045342-A (GB)
Title: Circuit arrangement for producing voltages of sawtooth waveform
IPC: H03K6/04
Filed: 1963-04-11
Abstract: 1,045,342. Transistor sawtooth generators. FERNSEH G.m.b.H. April 11, 1963 [April 11, 1962; Sept. 20, 1962], No. 14527/63. Heading H3T. A sawtooth generator comprises a capacitor charged via transistor and discharged via a further transistor of opposite conductivity type, the base of the charging transistor being supplied with a correction or linearizing signal. Driven sawtooth circuits.-As shown in Fig. 4, capacitor C 1  is charged via NPN transistor T 2  and resistors RA, Rg and discharged each time the PNP transistor T 1  is turned on by a pulse fed to the base. C 2  is charged by the voltage developed across Rk each time capacitor C 1  is discharged and is discharged during each sweep giving a linearizing or correcting signal at the base of T 2 . Resistors Rk or RA may be adjusted to give a linear charge or may be used to modify the waveform so as to compensate for the time constant of deflection coils (not shown). The amplitude is substantially unaffected by adjustment of Rk. In Fig. 6, transistors T 1 , T 2  operate as in Fig. 4, the resulting sawtooth voltage being amplified by T 3  and fed to emitter follower T, which drives a sawtooth current waveform through deflection coils 12, 13, 14 of the individual cathode-ray tubes in colour television apparatus. The sawtooth current through resistor 21 provides a control voltage which is rectified by D 2 , D 3  and passed via emitter follower T 5  to control the current in the charging transistor T 2  and hence stabilize the amplitude of current in coils 12- 14. The deflection amplitude may be adjusted by common resistor 21 or by individual resistors 16, 18, 20. Self-oscillating sawtooth generators.-In Fig. 5, capacitor C 1  is charged via transistor T 2  and discharged via a self-oscillating blocking oscillator T 1 . C 2  is charged by each pulse from winding W of the blocking oscillator transformer U, the discharge of C 2  via resistor RB and the input circuit of T 2 , linearizing the charging of C 1 . An amplitude controlling voltage may be fed to terminal UR.
Patent GB-1501339-A (GB)
Title: Process for manufacturing copy-receiving sheet material
IPC: B41M5/155
Filed: 1976-04-09
Abstract: 1501339 Sensitizing compositions NCR CORP 9 April 1976 [28 April 1975] 14533/76 Heading C4A [Also in Division D2] A composition for sensitizing copy-receiving sheet material for developing colour in basereacting, colourless, chromogenic, dye precursors, comprises an aqueous vehicle containing a 3,5- substituted salicylic acid, a zinc compound selected from zinc oxide, zinc carbonate, zinc phosphate and zinc phenol sulphonate, and ammonium hydroxide in an amount to maintain the pH of the composition between 7À5 and 10À0, the 3,5-substituted salicylic acid and the zinc compound being present in a weight ratio of from 1:1 to 1:6.
Patent GB-595856-A (GB)
Title: Improvements in or relating to door closing devices
IPC: E05F1/10
Filed: 1945-06-08
Abstract: 595,856. Door closers. RUTHERFORD, R. June 8, 1945, No. 14539. [Class 65 (i)] A spring closer designed to give a door rapid movement near its closed position comprises two telescopic parts one of which, a casing 1., 2, is secured to the frame the other, the spring anchor member 9, is adapted to act on the door. The parts are capable of relative rotary and axial movement under the control of a cam track formed on one of the parts and engaging a projection on the other part, the cam track increasing in stope towards the end which the projection engages when the door is closed. The spring 12 resists axial movement of the parts produced by relative rotation thereof in the door opening direction. The part 9 is straddled by two members 19 and 19a depending from the door operating spindle 17, and carries rollers 16 which engage cam tracks in a sleeve 4 fixed to the casing. In a modification a casing part connected to the door and formed with external cam tracks, telescopes against the action of a spring, within a casing part fixed to the frame and provided with pins adapted to engage the cam tracks. The door is held open in both cases by the projection engaging a recess formed at the ends of the cam track.
Patent GB-938775-A (GB)
Title: Improvements in or relating to temperature control systems
IPC: G05D23/22
Filed: 1961-04-21
Abstract: 938,775. Automatic temperature control systems. KOKUSAI DENKI KABUSHIKI KAISHA. April 21, 1961 [April 21, 1960], No. 14578/61. Class 38 (4). A system for automatically controlling the temperature of a material 2 in a heating bath 1 comprises a number of pairs of electrodes 3, 3a ; 4, 4a; 5, 5a of differing lengths immersed in the material 2, the electrode pairs being supplied from separate windings A, B, C of a transformer T, thermo-couples 6, 7, 8 responsive to the temperature of the material 2 in the zones associated with the different pairs of electrodes being provided to interrupt the supply to the electrode pairs by way of circuit breakers 12, 13, 14 and auxiliary relays 9, 10, 11 when the temperature of the material in the different zones reaches a desired value. Thus the material is heated to a common temperature throughout its mass. The material may be powdered carbon made fluid by the passage of air therethrough.
Patent GB-1099235-A (GB)
Title: Improvements in or relating to annular sealing means
Inventor: WELLS ALAN
IPC: F16J9/06
Filed: 1964-04-08
Abstract: 1,099,235. Piston rings; seals. HEPWORTH & GRANDAGE Ltd. April 5, 1965 [April 8, 1964], No. 14584/64. Headings F2B and F2T. Sealing means between two relatively movable members, e.g. a piston and cylinder, comprises a sealing ring 7 and a split spacer ring located in an annular groove in one of the members, the spacer ring having integral circumferentially spaced leaf springs 3 which engage and urge the sealing ring into contact with the other member. The spacer ring is of U-section formed from spring steel strip and the leaf springs 3 extend axially beyond the arms or flanges 5 of the U. The composite piston ring assembly shown in Fig. 3 comprises a pair of split sealing rings 7 axially spaced in a groove 8 in the piston 9 by the spacer ring and urged into contact with the cylinder bore 10 by the leaf springs 3. In a modification, Fig. 5 (not shown), the spacer ring is formed with circumferentially extending T - shaped leaf springs (11). The invention may be used as a shaft seal in which ease the sealing rings are urged radially inwards.
Patent GB-516343-A (GB)
Title: Improvements relating to yeast preparations
IPC: A23J3/20
Filed: 1938-05-16
Abstract: 516,343. Yeast; food preparations. WEIZMANN, C. May 16, 1938, No. 14602. [Classes 14 (ii) and 49] Yeast food or medicinal preparations are made by rapidly plasmolysing yeast, e.g. fresh bakers' yeast or pressed debittered brewers' yeast, by the juice, as expressed or after concentration, of fruits of substantial organic acid and sugar content, such as red currents, black currants, pineapple and the citrous fruits. The proportion of yeast to fruit juice reckoned in concentrated form is desirably of the order of 2:1. The plasmolysate may be heated to promote proteolysis. It may, for example, be gradually heated up to a temperature of 50-60‹C and maintained at that temperature for the necessary time; or the temperature may be raised in one or more stages to about 95‹C. or higher. Fruit juice of the fugitive-flavour kind e.g. grapefruit juice may be 'incorporated subsequent to the plasmolysis, and sugar, to increase the sweetness of the product, may also be added. Specification 483,587 is referred to.
Patent GB-1219086-A (GB)
Title: Document trays
Inventor: BURCHELL JACK
IPC: B42F17/02
Filed: 1967-03-30
Abstract: 1,219,086. Posting tray. ALPA PLASTICS Ltd. 19 Feb., 1968 [30 March, 1967], No. 14603/67. Heading B6E. A posting tray for index cards is made from plastics material and includes a base 1, a first pair of opposite sides of which is provided with spaced upstanding flanges 14, 15 between which are received the side walls 6 of wall members 2, 3 hinged to the other pair of opposite sides of the base 1, whereby the width of the base is extended to prevent tilting of the posting tray. The wall members are deflected outwardly by flanges 8 hinged to the wall members 2, 3, and associated with integral actuating arms 11  which are guided in slots 7 by bolts 12 and pivoted downwardly by the outwardly deflected wall members 2, 3. The wall members 2, 3, which are actuated by respective handles 16 may be of different heights and/or provided with a cover lid.
Patent GB-1031131-A (GB)
Title: Improvements in or relating to electromagnetic relays
IPC: H01H50/16
Filed: 1964-04-09
Abstract: 1,031,131. Electromagnetic relays. SIEMENS & HALSKE A.G. April 9, 1964 [April 11, 1963]. No. 14615/64. Heading H2B. A balanced armature 5 pivoted within a coil 2 co-operates with diametrically opposed polepieces 3a, 4a extending from the ends of the coil. Wedge-shaped air-gaps 6a, 6b are formed between the respective polepiece and opposite ends of the armature. The polepieces are formed as extensions to magnetic end-plates 4, 5. The magnetic circuit is completed by a magnetic screen 7. Sticking is prevented by a non- magnetic stop 5b on the armature. An extension 5c at one end of the armature projects through an aperture 3b formed in end-plate 3 to operate a contact spring-set. The armature is biased to the position shown by a torsion spring.
Patent GB-1042098-A (GB)
Title: Improvements in or relating to a lock washer and threaded fastener unit and method of assembly
IPC: F16B39/26
Filed: 1965-04-06
Abstract: 1,042,098. Nut and lock washer assembly. R. SCHMIDT. April 6, 1965 [April 7, 1964] No. 14644/65. Heading F2H. A nut 12 and washer 18 are positively engaged, the washer being free to rotate relatively to the nut. The washer is formed with a first body portion 40 of frusto-conical form from which twisted teeth 30 project and an intermediate portion 42, which is also frusto-conical and an inner portion 44 from which a flange 46 extends radially outwards. The threaded nut 12 has a recess 20 in the bearing face 16. As nut and washer are assembled together, pressure of the edge of recess 20 against the portion 42 deforms the edge until a lip 48 is formed which is gripped between the flange 46 and the portion 42.
Patent GB-676979-A (GB)
Title: Improvements in or relating to apparatus for joining together the ends of cinematograph films
IPC: G03D15/04
Filed: 1949-06-01
Abstract: 676,979. Kinematograph film splicers. STURGEON, J. June 1, 1950 [June 1, 1949], No. 14709/49. Class 98 (ii). A base 1 is formed with a recess 2 having sets of locating fins (two of which are shown at 3, 5) for receiving film, and is provided with a spring- loaded pressure pad 9 carried on a mounting 12 shown as held to position on the recess 2 by engagement with slotted member 10 ; and with pivoted clamps 13, 14, the latter carrying a forward extension part 15, also to bear on the recess 2; and cutting mechanism at the righthand edge of the base 1 consisting of a stationary, blade 16 and movable blade 16a pivoted at 17, which may be swung away to an inoperative position by attachment to a block 19 rotatable about a vertical member 20. In use the ends of films to be joined are, successively, placed on the locating pins, clamped down with clamp 14, trimmed by blade 16a engaging against blade 16 and scraped clean, removed and replaced on the pins in joining position beneath the pressure pad 9 and clamped down with clamps 13, 14. The uppermost film end is raised, cement is applied to the lower end and pressure pad 9 is closed for the joint to set. Grooves 25 running transversely of the base may be provided to drain off surplus cement. If desired the movable blade 16a may be mounted on an offset and fixed part of the base instead of on the rotatable block 19.
Patent GB-291029-A (GB)
IPC: G11B7/00
Filed: 1928-05-19
Abstract: 291,029. Konemann, H. May 24, 1927, [Convention date]. Drawings to Specification. Television; copying-telegraphs.-The Specification describes apparatus in which a direct current spot-light are lamp is used for photographically recording sound, the electrodes of the are being made of tungsten or other metal and being enclosed. The alternating currents to be recorded are superposed on the direct current of the are. The Specification as originally open to inspection under Sect. 91 (3) (a), states that the invention is applicable to television and picture transmission apparatus. It also states that the atmosphere in the enclosing vessel of the arc lamp may contain vapours or gases which have an actinic action, such as mercury vapour or argon: and that instead of using direct current for the arc, it may be operated by a highfrequency current on which modulations are impressed. This subject-matter does not appear in the Specification as accepted.
Patent GB-257680-A (GB)
Title: Improvements in mixing devices
IPC: B28C7/06
Filed: 1925-06-08
Abstract: 257,680. Fitzmaurice, R. June 8, 1925. Conveyer apparatus, ejector. -Apparatus for delivering a stream of dry cement, lime, sand and the like in building operations comprises a Venturi-tube b and a hopper t, the conical mouth r of the hopper delivering by a tube m into the narrow part of the Venturi tube. The material is prevented from choking the hopper outlet by the provision of a supplementary air jet o situated in the mouth of the hopper above the delivery tube, this jet being supplied by a tube n leading from the top of a chamber g which is situated in the main air supply and provided with baffles i to prevent the passage of moisture. In a modification Fig. 2 a further supplementary air supply N is delivered to an ejector A<1> situated in the hopper delivery tube so as to assist the delivery of material to the Venturitube.
Patent GB-401211-A (GB)
Title: Improvements in or relating to liquid pumping systems
IPC: F04B53/10
Filed: 1933-05-23
Abstract: 401,211. Filters. BOSCH AKT.-GES., R., 4, Militõrstrasse, Stuttgart, Germany. May 23, 1933, No. 14841. Convention date May 23, 1932. [Class 46.] A liquid-pumping system in which a pump .`3 draws liquid from a sump 1 and discharges it to the places 8 required from which places it flows back into the sump 1, and in which a byepass 9 leads excess liquid through a filter 10 and back to the sump, is characterized by the feature that the outlet of the filter 10 opens directly into an existing opening in the sump situated above the liquid level. As shown, the system is applied to an internal combustion engine in which the bearings 8 are lubricated by oil pumped by the pump 3, and in this case the filter outlet is constituted by the sump filler opening 5. The filler tube 14 has openings 20 and is surrounded by the filter which contains layers 17 of felt or other suitable material. One or more longitudinal passages 18 communicating with the oil inlet 16 are formed in the layers 17 so that oil passes through the filtering layers 17 and so to the openings 20 and the sump.
Patent GB-663000-A (GB)
Title: Improvements in and in the making of soldered joints
IPC: B23K1/00
Filed: 1949-06-03
Abstract: 663,000. Making hollow-ware. COVENTRY MOTOR FITTINGS CO., Ltd., and GARRATT, A. L. Jan. 23, 1950 [June 3, 1949], No. 14903/49. Classes 83 (ii) and 83 (iv). Soldering; joints.- In a soldered joint in which an edge of one part is located In an open groove in the other part which holds molten solder during soldering, the edge has a flange against the flat bottom of the groove and the edge is located with clearance against a side wall of the groove which latter receives a wire of solder so that on being fused it runs between the flange and bottom and by capillary action between the edge and side wall. In an embodiment, the base-plate 2, Fig. 3, of a radiator header tank has a continuous groove 4 which receives an outwardly-directed endless flange 6 on a wall 5 stepped at 7 and a solder wire 9. A highfrequency induction heating element 10 surrounds the perimeter of the groove 4 and when connected to a generator causes the solder 9 to melt and form a joint as in Fig. 4. In further embodiments, the flange is inwardly or outwardly directed and the edge may be stepped or unstepped. Means other than induction heating may be employed, e.g. furnace heating.
Patent GB-918773-A (GB)
Title: Speed responsive device
IPC: H02P23/00
Filed: 1959-05-01
Abstract: 918,773. Shaft speed indicators. SPERRY RAND CORPORATION. May 1, 1959 [May 2, 1958], No. 14928/59. Class 40 (1). [Also in Group XXXV] A control or indicating device for the speed of a shaft includes an A.C. tachometer generator whose output is differentiated and the differentiated signal divided by the generator output signal in order to produce a signal whose amplitude is proportional to the generator output signal frequency and unaffected by variations in generator output amplitude. In the Engine Control Circuit shown in the Figure, the tachometer generator output is differentiated by device 13 rectified by 16 and applied to one terminal of adding network 23, to the other input terminal of which is applied a proportion of the rectified output of the tachometer generator. Servo system 24 drives potentiometer spindle 35 until the two adding network inputs are equal, in which condition it is shown in the Specification, the potentiometer spindle position is proportional to the frequency of the tachometer generator output and hence the speed of the engine. The potentiometer spindle may be coupled to pointer 41 to indicate the engine speed and also to the rotor of synchro-transmitter 45. The output of synchro-system 43 is proportional to the difference in setting of rotors 44 and 49, the first of which is automatically set in accordance with the actual speed of the engine as described above and the second of which is manually set according to the desired speed. With the output of the synchro-system applied as shown to throttle control means 11, the engine will be controlled to run at the speed required. Reference has been directed by the Comptroller to Specification 655,115.
Patent GB-675427-A (GB)
Title: Improvements in or relating to an electrical circuit and means of energising a high frequency electrical load
Inventor: VAUGHAN JOHN THOMAS
IPC: H03K3/78
Filed: 1950-06-16
Abstract: 675,427. Switching systems for high-frequency loads. OHIO CRANKSHAFT CO. June 16, 1950, No. 15072/50. Drawings to Specification. Class 38 (iv). Intermittent energization of a high-frequency load, such as the transmitter in an echo ranging system, is effected by a switching system which first connects the load to the high-frequency source and subsequently short-circuits the source, which is preferably a machine having a short-circuit current but little greater than its full load current. Switching is preferably effected by a drum switch driven by a synchronous motor, the drum contacts being relieved of opening under load by an electromagnetic contactor which maintains a further short-circuit on the source whilst the drum contacts are opening. The drum may also control contacts in the exciting circuit of the source, whereby excitation may be interrupted, with or without momentary prior reversal, whilst the source is short-circuited.
Patent GB-990458-A (GB)
Title: Telescopic umbrella
IPC: A45B19/06
Filed: 1964-04-13
Abstract: 990,458. Umbrellas. H. DULTGEN. April 13, 1964 [April 16, 1963], No. 15102/64. Heading A4P. In a telescopic umbrella having telescoping stick parts 1, 2 and telescoping rib parts 9, 9a, main struts 11 pivoted to a main slider 5 and to a hinge sleeve 10 sliding on the rib part 9, and auxiliary struts 12 pivoted at 13 to the ribs 11 and to an auxiliary slider 6, at least one of the auxiliary struts is of resilient spring wire or rod and is bent so that the bent part 14 bears against the auxiliary slider and the strut is stressed when the umbrella is closed, and, in the initial stages of opening the outer end of the auxiliary strut urges the main strut and hence the rib parts 9, 9a away from the stick and prevents telescoping of the rib parts on further opening of the umbrella. The hinge sleeve is secured to the rib part 9a which slides into the U- section part 9 and apertures, for engagement with a click stop in the main slider 5, are provided at 7 and 8 to lock the umbrella in open and closed positions. The auxiliary strut is of rectangular, triangular or T-section.