baber/WOPTO huggingface dataset:
Patent GB-1384323-A (GB)
Title: Backlash compensating system for use in a numerical control system
IPC: G05B19/23
Filed: 1972-04-17
Abstract: 1384323 Numerical machine control FUJITSU Ltd 17 April 1972 [22 April 1971] 17561/72 Heading G3N In a machine tool numerical control system, in which command pulses CWP count up an error register ER which is counted down by feedback pulses derived from a sensor on the machine table MTA, a pre-set amount of backlash due to tool overshoot, direction reversal or feed screw errors is compensated for whenever the contents of the error register change sign. As shown, when sign reversal detector DD, see also Fig. 7 (not shown) detects the error register sign change it enables the provision to counter BR of an amount of backlash pre-set in switch unit SW, see also Fig. 8 (not shown), and BR in turn causes D-A converter DAC, see also Fig. 10 (not shown), comprising a transistor circuit for each significant figure of the content of ER, and a transistor for BR, to emit a high amplitude output, providing heightened gain of the servosystem, until BR, which is counted down by a pulse generator circuit PQ controlled by movement of lead screw FS driven by stepping motor SM has zero content, whence position control is again governed by ER until its count is within a predetermined domain about zero such a domain being set in a switching circuit, Fig. 11 (not shown). Error register ER comprises flipflops for each significant figure, inter-connected by logic circuitry, Figs. 5 and 6 (not shown), as does register BR, Fig. 9 (not shown). Further embodiments a) In Figs. 2a and 2b (not shown) oscillator (OSCO) provides pulses whose frequency defines the rate at which the content of register (ER) is added to accumulator (AR) whose overflow, via circuit (23) enabling an n-fold increase in fineness of stepping of motor (PM) controls the machine table. Upon change of sign in the error register, register (RE), containing the pre-set amount of backlash provided via (SW) or from the controller (NC) via (BCM), provides output signals to a D-A converter controlling oscillator (OSCI) whose frequency is normally higher than that of (OSCO) which is blocked by the output of OSCI, the latter taking over the control of addition of error register (ER) contents to the accumulator (AR), until the latter counts the register (RE) to zero. The frequencies of OSCO and OSCI are substantially equal when the count of (RE) is 1. b) In Figs. 3a and 3b (not shown). A servo error elimination circuit (33) comprising a register (ER1), and an accumulator receives the control pulses, and outputs them as an overflow from the accumulator after a delay simulating the response time of the stepping motor, to the error register (ER2). In addition the operation of the backlash compensation register (RE) is inhibited unless the register (ER1) contains zero. c) In Figs. 4a and 4b (not shown), backlash compensation under control of unit (DD) causes flip-flop (M) to change state for a period defined by unit (T) thus enabling gate (GA) which then passes pulses (f3) to stepping motor circuit (23).
Patent GB-1089384-A (GB)
Title: Process for the manufacturing of points for ball point pens
IPC: B43K7/00
Filed: 1966-04-22
Abstract: 1,089,384. Making ball point pens; extruding; stamping. REAL PATENTAUSWERTUNGS ANSTALT. April 22, 1966 [May 11, 1965], No. 17624/66. Headings B3A, B3P and B3Q. In a method of making a point for a ball point pen, a cylindrical blank is cut off from a length of rod or wire and is backwardly extruded when cold into a hollow cylinder I<SP>11</SP>, which is closed at one end. The cylinder is subjected to a series of deep drawing operations wherein it is lengthened and reduced in diameter, but without alteration of its wall thickness. The bottom of the cylinder is punched out and the tube has a portion of its length formed with a reduced diameter. Finally the ends of the stepped tube are tapered to form the required point.
Patent GB-638478-A (GB)
Title: Improvements in or relating to economisers
IPC: F22D1/06
Filed: 1948-06-30
Abstract: 638,478. Supporting economiser tubes. SENIOR ECONOMISERS, Ltd., and HARDY, L. E. June 30, 1948. No. 17643. [Class 64(iii)] The tubes a, b of an enconomiser are suspended from vertical water supply or delivery tubes a<SP>2</SP>, b<SP>2</SP>. In the form shown, the horizontal tube lengths rest on horizontal cross-pieces 6 carried by strips 5 suspended from the tubes a<SP>2</SP>, b<SP>2</SP> by strips 4.
Patent GB-1144392-A (GB)
Title: Monitoring device
IPC: G05B9/03
Filed: 1967-04-18
Abstract: 1,144,392. Automatic control. BENDIX CORP. April 18, 1967 [April 25, 1966], No. 17698/67. Heading G3R. In an electrical system for automatically controlling a variable in which duplicate control channels are provided for reliability, a pulse generator is maintained in operation by feeding back its output in combination with signals from the two channels, but gives an indication by its change in frequency when the signals differ by more than a predetermined amount. In Fig. 1, pulses of opposite polarity derived with the aid of an inverter 6 from a triggered pulse generator 4 are added at 8 and 10 to D.C. control signals e, e o , e.g. from the channels of a duplicated channel aircraft control system, and the resultants applied to a differential amplifier 12. When the difference between control signals e, e o  is below a predetermined value the output of amplifier 12 periodically charges a condenser 17 to a value which operates a Schmitt circuit 20 to trigger a pulse generator 22 and thereby apply pulses through an amplifier 24 and transformer 25 to maintain operation of pulse generator 4 within a suitable frequency range. If control signals e, e o  differ by more than a predetermined amount, the charging time of condenser 17 is such that pulse generator 22 stops or varies in frequency to such an extent that the rectified output of a band pass filter 26 is insufficient to hold off an alarm 32 which then operates to indicate that the predetermined difference between the control signals has been exceeded. The system fails safe by virtue of the hold-off arrangement of the alarm which thus operates in the event of a fault in the monitoring system itself.
Patent GB-1277358-A (GB)
Title: Improvements in or relating to liquid-storage tanks
IPC: B65D88/54
Filed: 1970-04-14
Abstract: 1277358 Tanks of the floating roof type CONSTRUCTEURS ASSOCIES POUR LE MONTAGE D'OUVRAGES METALLIQUES CONSTRUCTIONS METALLIQUES DE PROVENCE and COMPAGNIE INDUSTRIELLE MARITIME 14 April 1970 [15 April 1969] 17709/70 Heading E1T In a floating roof tank, a number of inlet nozzles 4, disposed at the bottom of the tank, register with curved baffle plates 6 and a radial outlet duct 8 opens into the central portion of the bottom of the tank. Each inlet nozzle (Figs. 3-5) comprises a rectangular end section (14) which is welded to a tank peripheral member (5) and which is connected via an outflared portion (15) to a filling pipe 13. The central duct is similarly made up of a rectangular section 8 extending into an outflared spout 9 (Figs. 8-11). The bottom of the tank is tapered to an apex (17, Fig. 1).
Patent GB-401615-A (GB)
Title: Improvements in or relating to welded joints for pipes
IPC: F16L13/02
Filed: 1933-06-21
Abstract: 401,615. Pipe joints. SIMMEN, 0., Erlach, Switzerland. June 21, 1933, No. 17729. [Class 99 (i).] A spigot f which fits into the expanded ends of the pipes has an external rib h against which the ends of the pipes abut and the joint is completed by welding at c. The spigot may be of springy material and be made of two or more parts.
Patent GB-458135-A (GB)
Title: Improvements in television receiving systems
IPC: H04N3/18
Filed: 1935-06-21
Abstract: 458,135. Smoothing pulsating currents. READER, E., Crofthouse, Collinge Fold, Rawtenstall, and GLASS, L., 7, Pall Mall, Manchester, both in Lancashire. June 21, 1935, No. 17815. [Class 38 (ii)] A high-tension unit for supplying the required voltages for operating a television receiving system employing a cathode ray tube and a time-base circuit therefor, comprises a primary winding A, having secondary windings B<1> ... B<5> associated therewith, and a potential divider R<4> receiving power from the secondary windings through a hard rectifying valve V<1> or a metal rectifier, a smoothing bank consisting of three resistances R<1>, R', R<3>, an inductance L<1> and condensers C<1>, C<2> being connected as shown, and a plurality of tappings T<1> ... T<8> being provided on the potential divider R<4> for supplying the appropriate voltages to the cathode ray tube and the time-base circuit. The potential divider is in two parts connected together by a slider arm S, so that should this arm not make contact additional negative bias will be applied to the cathode ray tube shield, this being connected to the tapping T<4>. The filament of the tube is connected to terminals F, F<1>, which are joined by a centre-tapped resistance R<7> and are connected to the secondary winding B<1>. The windings B4, B<5> may supply the filaments of the valves of the time base unit and a wireless set respectively.
Patent GB-744931-A (GB)
Title: Improvements relating to heating or cooling arrangements in buildings
IPC: F24D3/16
Filed: 1953-06-26
Abstract: 744,931. Radiators for heating and cooling buildings. SOBREWO AKT.-GES. June 26, 1953 [June 26, 1952 ; Nov. 7, 1952], No. 17816/53. Class 64(2). A heat-conducting plate 3 for attachment to a heating or cooling pipe 2 under a plaster or other covering layer is shaped to form a channel 4 of the same diameter as the pipe 2 which it partly encloses, the side edges of the channel each being formed as an outwardly projecting fold 5 or 6 for engagement by a holder or clip 7 which encloses the remainder of the tube. A plaster layer can be applied to a number of heatconducting plates fixed in position in a building. Alternatively, as shown, the plate may be part of a structural slab for a ceiling, the slab also comprising a surface layer 1 of plaster or other building material. Tongues 12 are stamped from the plate to hold the plaster in place. The plate may decrease in thickness towards its side edges. Some of the blocks forming the ceiling may have no heating plates, or parts of the plates may be cut away to reduce their heating area. The edges 21 of the slabs interfit. The plaster layer and the plate may have perforations and may support a layer of sounddamping material. The part of this material filling the cavity below the channel 4 may be non-heat-insulating, and the remainder may be heat-insulating.
Patent GB-562143-A (GB)
Title: Improvements in or relating to an arrangement for detachably securing cables and thelike to hollow structures
IPC: H02G7/20
Filed: 1942-12-15
Abstract: 562,143. Clamps. BREWER, A. G., and MASTS, Ltd. Dec. 15, 1942, No. 17836. [Class 45] [Also in Group XXV] A clamp for detachably securing cables 14 to an apertured support such as a hollow mast 7 comprises a bolt with a head 11 shaped so that it can be passed in non-central position through the aperture 8 and then brought to central position in which it seats in the aperture as shown, the bolt carrying a pair of slidable jaw members 23 shaped to take the cables and nut 1 which, when tightened, clamps the jaws on to the cables and forces jaw 3 against the support to secure the bolt-head against movement on its seat. The nut is held captive on the bolt by burring the bolt end, and, if required, as for example when the structure 7 is of thin material, a washer 9 may be secured to structure 7 and around the aperture, preferably by welding.
Patent GB-737518-A (GB)
Title: Improvements in or relating to devices for dispensing materials of ribbon-like or filamentary form
IPC: B65H16/08
Filed: 1953-06-26
Abstract: 737,518. Ribbon &c. dispensers. EDWARDS, E. W. June 23, 1954 [June 26, 1953], No. 17843/53. Class 18. [Also in Groups IX and XVI] A dispenser for ribbon &c., comprises a checking surface 15 inclined at approximately 45 degrees to the vertical, lateral guides 13 for a roll 10 of material to be dispensed, and a plurality of supporting rollers 17 ... 20, the arrangement being such that when the material is subjected' to less than a predetermined tension the roll rests on the surface 15 and at least one of the rollers and resists rotation, but when the predetermined tension is exceeded the roll is lifted off the surface 15, is rotatably supported by the rollers, and permits the material to be drawn off. The roller 17 is so spaced from the surface 15 that an empty spool 11 falls through an aperture 21.
Patent GB-595994-A (GB)
Title: Improvements in and relating to detachable fasteners
IPC: F16B21/07
Filed: 1945-07-13
Abstract: 595,994. Stud fastenings. BOULTON PAUL AIRCRAFT Ltd., and TYRRELL. A. N. July 13, 1945, No. 17885. [Class 44] A detachable fastener for securing a detachable member to a base or other support, described particularly for use with a routing machine, comprises two parts ; a tapered stud 1 secured to the support and passing through a hole in the detachable member, and having diametrically opposed shoulders 9 formed by filed flats 8 in the tapered part ; a metal clip of substantially cruciform shape, with an aperture in its base for the stud and having two opposed -arms 10 bent upwards and inwards to form spring tongues which engage beneath the shoulders 9 to secure both the clip and the detachable member. The two other arms are bent up to form lugs 11 by which the clip may be gripped, and rotated through a right angle to move the tongues out of engagement with the shoulders so that the clip and detachable member can be removed from the stud. A washer 12 is arranged in the aperture in the base of the clip. The stud may be removably attached to the support by means of two flat hooks 13. Fig. 3, rigid with the stud and engaging beneath the heads of screws 14 in support when the stud is rotated. Grooves may replace the shoulders on the stud. The washer may be omitted and the clip formed with downwardly projecting spring tongues or ridges.
Patent GB-705810-A (GB)
Title: Improvements in automatic adjustment mechanism for external shoe-drum brakes
Inventor: SCHNELL STEVE
IPC: F16D65/58
Filed: 1952-07-16
Abstract: 705,810. Internal shoe drum brakes. WAGNER ELECTRIC CORPORATION. July 16, 1952, No. 17977/52. Class 103(1) An automatic wear adjustment device for internal shoe drum brakes comprises a lever 7 pivoted by a pin 9 to the shoe web 8 and having its other end adapted to engage an eccentric 5 mounted on the backing plate 1. A brake drum contacting member 10 is pivoted at one end to lever 7 by pin 11 and has its other end projecting through an aperture 12 in the shoe rim so as to engage the brake drum. The lever 7 has a part 13 having a serrated surface which is normally in locked engagement with the serrated surface 14 on a wedge member 15 urged upwardly by a spring 16 against a fixed thrust member 18. If shoe lining wear becomes excessive arm 10 is forced downwardly and inwardly due to its end engaging the drum thus causing lever 7 to pivot back slightly allowing wedge member 15 to disengage from the serrated part of the lever and move upwardly under the influence of spring 16 and so re-engage with the next tooth position. The position of lever 7 at brake released condition is thus readjusted to maintain the original shoe drum clearance. A leaf spring 21 acts to maintain the member 10 in its uppermost position when not in engagement with the drum.
Patent GB-302556-A (GB)
Title: Improvements in mixing machines
IPC: A21C1/06
Filed: 1928-06-21
Abstract: 302,556. Steele, G., and Cowlishaw, S. D., (trading as Steele & Cowlishaw). June 21, 1928. Rotary mixers; continuousdischarge apparatus with moving containers.-In a mixing-machine comprising a barrel with a bladed shaft therein, both being driven round a horizontal axis from a countershaft, the shaft and barrel are driven one by direct chain or belt gearing, the other by direct-spur gearing. The barrel a, in the form shown, is rotated by a spur gear m on the countershaft h to which it is clutched by a clutch n. The blades f, of helical form, are rotated by chain gearing e, k. In the case of a non-continuous mixer, the barrel is provided with a discharge opening closed by a sliding door c, and the rotation of the blade while the drum is stationary discharges the drum. For continuous mixers the drum is mounted on hollow trunnions through which charging and discharging is effected.
Patent GB-991782-A (GB)
Title: Improvements in apparatus for the measurement of torsion and the like
Inventor: BARBER DEREK LESLIE ARTHUR
IPC: G01P3/48
Filed: 1960-05-20
Abstract: 991, 782. Photo-electric torque measuring apparatus. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 17, 1961 [May 20, 1960], No. 17987/60. Heading G1A. In apparatus for measuring the torque of a rotating shaft 1, light beams from sources 5 and 12 are each passed through one of radial gratings 3 and 8, rotating with the shaft, and through one of the stationary radial gratings 2 and 7, gratings 2 and 3 forming a reference pair, to produce two systems of moirÚ fringes detected respectively by photo-cell 6 and 11. The outputs of the two photocells in the form of two series of pulses Fig. 2, are fed to a phase discriminator 13 comprising a bi-stable flip-flop giving a positive output where triggered by a pulse from photo-cell 6 and a negative output when triggered by a pulse from photocell 11 and having its alternating output fed to a damped servomotor 10, responsive to the average valve of the said output only and controlling an arm 9 adjusting grating 7 over a small angle. With no torque applied to the shaft, servomotor 10 adjusts grating 7 so that the pulses from photocell 11 occur midway between there from photocell 6 and phase discrimator 13 gives a symmetrical alternating output having zero average valve. Pointer 14 then indicates zero torque on scale 15. With torque applied to the shaft the pulses from photo-cell 11 tend to lag from their position midway between the reference pulses causing phase discrimator 13 to give a positive average output causing servomotor 10 to adjust grating 7 to the new position of equilibrium, pointer 14 then giving a direct indication of the applied torque. Alternatively the phase discriminator may comprise a circuit giving "on"/"off" conditions and having its output compared with a fixed valve and fed as above to the servomotor. In another embodiment, servomotor 10 may be dispensed with and the output pulses of photo-cell 11 adjusted to the midway equilibrium position by a delay device 16 giving an indication of the torque on a meter. In this embodiment the amount of measureable twist between the two rotating gratings is limited to one grating division, this limitation however can be overcome by including a frequency divide to reduce the number of pulses compared. A single light source may be used between gratings 8 and 2. Specifications 932,471 and 953,050 are referred to.
Patent GB-334913-A (GB)
Title: Improvements in fountain pens
IPC: B43K5/04
Filed: 1929-06-12
Abstract: 334,913. Verga, E. June 12, 1929. Self-filling reservoir pens.-In a sac self-filling reservoir pen, the presser-bar 1 and operating- lever 2 are pivoted together, and the operating- lever is pivoted in a bearing 4 removably held in the barrel, preferably between a flange 8 on the interior wall of the barrel and a screw cap 7 which serves also as a protective cover for the finger-piece 3 of the operating-lever. The end of the presser-bar may be curved to serve as a guide and positioning-member for the sac.
Patent GB-436104-A (GB)
Title: Implement or device for cutting loops of wool such as are formed in making wool rugs, mats, carpets, or the like
IPC: D04G3/02
Filed: 1934-06-18
Abstract: 436,104. Thread cutters. JONES, K. W., Ladock, Upper Mulgrave Road, Cheam, Surrey. June 18, 1934, No. 18038. [Class 30] [See also Groups IX and VIII] Loops of cotton &c. are cut by inserting the pointed end 6 of a rod under a number of loops and sliding a knife holder 2 along the rod, a wafer blade 3 depending in a longitudinal slot 5 in the rod. The rear end of the rod may be closed or flared or be provided with a knob 7 or handle forming a stop for the holder 2, which may comprise two metal pressings 8, having parts 9 embracing the rod 1, or they may fit in the bore thereof as shown in Fig. 16. The rod may be formed of tin plate, or of a solid bar furnished with a slot, or from two plates, and various means for securing the cutter to the holder are described.
Patent GB-294520-A (GB)
Title: Improvements in and relating to the extraction of sugar from beet
IPC: C13B10/08
Filed: 1927-02-23
Abstract: 294,520. Farnell, R. G. W. Feb. 23, 1927. Divided on 293,066. Extracting sugar.-Beet in the foim of cossettes or other divided state is dried before extraction at 100‹ C. or below and at atmospheric pressure, the pressure, while the material is in a heated condition, being suddenly reduced to facilitate the subsequent diffusion process.
Patent GB-561635-A (GB)
Title: Improvements relating to electric cartridge fuses
IPC: H01H85/18
Filed: 1942-12-19
Abstract: 561,635. Fusible cut-outs. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., BREEZE, H. W., and HOBAN, H. C. Dec. 19, 1942, No. 18067. [Class 38 (i)] A cartridge fuse comprising a tube with removable end caps into which a refill unit is inserted comprising a fusible element having moulded around it a block of arc-extinguishing material mixed with a binder. Silver sand mixed with powdered bentonite may be moistened and moulded to shape, dried and coated with a binder such as cellulose acetate. The ends of the fuse element 1 projecting from the block 2 so formed are passed through apertures 5 in the end caps 4 and secured by washers 6 and screws 7. Alternatively, the washers may be inside the end caps, the screws being threaded into the washers and the ends of the fuse element passing through holes in the washers and being clamped against the inner face of the end cap.
Patent GB-182323-A (GB)
Title: Improved construction of lifting jack
IPC: B66F1/00
Filed: 1921-07-04
Abstract: 182,323. Page, R. July 4, 1921. Jacks.-Relates to jacks of the kind described in Specification 11685/15. A rocking frame 5 which receives the handle 6 is pivotally mounted on the standard 2 and carries pawls 8, 9 normally engaging circular teeth 12 on the lifting pillar 13. Arms 19, 20 having curved edges a, b are pivoted to the standard 2 at their upper ends and normally kept apart by spring pins 26. A link 22 connects the arm 20 to the upper end of a rocking lever 21 pivoted to the other arm. A chain 27 attached to the other end of the lever 21 is passed through a hole 28 in the side 4 of the frame 5 and secured to a short tube 29, which is capable of limited rotation and has lugs 34 engaged by recesses on the end of the handle 6. Springs 17, 18 secured to the standard bear against pins 15, 16 on the pawls which are also acted on by the curved surfaces a, b. With the parts in the position shown, the pillar 13 can be removed as the pawls cannot be engaged with the teeth 12. If the handle is rotated, the chain n is wrapped round the tube 29 and the arms 19, 20 are pulled together, thus freeing the pins 15, 16 and causing the pawls to be forced into engagement with the pillar. If the handle is then rocked the pillar is raised. To lower the load the handle is first rotated to free the chain and then lowered after being slightly raised. The first action causes the arms 19, 20 to take up a position in which the surfaces a, b can act on the pins 15, 16, but the weight of the load maintains the engagement of the pawls and pillar. The second action disengages, raises and re-engages each pawl alternately.