baber/WOPTO huggingface dataset:
Patent GB-834770-A (GB)
Title: Improvements in or relating to spool-driving mechanisms in magnetic tape recorders
IPC: G11B15/28
Filed: 1958-10-30
Abstract: 834,770. Driving magnetic tape. SOC. ELECTROMAG. Oct. 30, 1958 [Nov. 4, 1957], No. 34874/58. Class 40 (2). [Also in Group XXXIX] In a drive system for magnetic tape in machines of the stenographic type, the drive control is a lever 10 movable by pivoting or sliding but not both about the pin 11 in the directions 31, 32, 33 respectively. The slot 12 allows sliding while the pins 29, 30 engage the full width of the lever 10 to prevent pivoting, while the recesses 27, 28 acting on the pins 29, 30 respectively permit pivoting while preventing sliding. The motor is mounted flexibly at its lower end and its shaft 8 appears upwardly through a key-hole aperture 13 in the lever 10. The spring 14 urges the motor to tilt due to the movements 31, 32 while the narrow part of the key-hole holds the motor shaft upright during the movement 33. In this last movement, an idler wheel 37 on the lever 10 is brought into use. The motor spindle 8 carries a drive-wheel 7. The drive sequence is: 31. Record/playback: 8-34, 35-36. 32. Fast rewind: 7-40. 33. Fast forward: 7-37-36. The wheels 36, 40 drive, respectively, via slip. ping clutch means, reel carriers 2, 1, the clutches consisting of spring-loaded balls engaging in dimples in the undersides of the carriers 1, 2. When the end of the tape is reached, or if jamming occurs, the clutches are overcome giving an audible warning.
Patent GB-394021-A (GB)
Title: Improvements in or relating to electric signalling apparatus for use in conjunction with an automatic telephone system
IPC: H04M11/04
Filed: 1932-09-08
Abstract: 394,021. Automatic exchange systems. SHIPTON, E., Caxton House, Tothill Street, London. Sept. 8, 1932, No. 34881/31. [Class 40 (iv).] - In a system in which fire or burglar contacts control apparatus which transmits the appropriate number and then gives a signal indicating the location of the calling station, the impulse transmitter has adjustable members for varying the number to be sent. The identifying signal may be sent phonographically or by striking a bell associated with a microphone in accordance with a code. ' Two or more impulse transmitters may be arranged to be operated respectively by fire, burglary, &c. The apparatus may be used' for signalling the condition of apparatus in general. The apparatus may be connected to the telephone line by a switch or, as shown in Fig. 5, by the magnet 38 which starts the impulse transmitter and is shortcircuited by a relay 52:while the line is in use. The gramophone may be of optical or magnetic type but as shown comprises an electromagnetic pick-up 5, which is preferably disconnected during impulsing and at the end of its travel operates springs (not shown) to break'the loop and release the exchange apparatus. Construction of impulse-transmitter. On the operation of the magnet 38, an arm 35 is moved clear of a pin 34 and allows rotation of an impulse cam 21 geared to a notched disc 13. In the normal position of the disc, a member 42 holds the shaft 25 in such a position that the dialling contacts 23 are c 1 e a r of the impulse cam. After a suitable interval the member 42 moves clear and the cam then co-operates with the springs 23 to cause impulses to be transmitted. The values of the digits are determined by the position of adjustable spring arms 16 which engage the arm 26 to terminate each digit. The last of the arms 16 is longer than the others and moves the arm 26 so far that a pin 32 on lever 24 engages a step on an arm 29 to stop the transmission of further impulses. The sender is reset by rotating the spindle 10 of the wheel 13 until an indicating mark 39 is opposite a window. Additional contacts 48 ensure that the speech circuit is not closed until dialling is complete. Construction of gramophone. The pick-up 5 is carried by rollers 6 on a guide bar 7, the needle projecting through a slot in a top board 2 which is hinged to give access to the record.
Patent GB-799678-A (GB)
Title: Improvements in or relating to threading apparatus
Inventor: KENNINGTON ARNOLD REGINALD FRA
IPC: G03D3/13
Filed: 1955-12-06
Abstract: 799,678. Feeding webs. ILFORD, Ltd. Dec. 5, 1956 [Dec. 6, 1955], No. 34998/55. Class 100(1) [Also in Group XX] Apparatus for threading a strip, band or web around guide rollers arranged in parallel rows so that the strip or web zigzags between the rows comprises a gripper which is reciprocated from one row to the other and moved one step along the row at the end of each reciprocating stroke. In the form shown, in order to thread a photographic film around parallel rows of spaced rollers 7, 8 in a processing tank, the film is fed through rollers 6 and attached to a gripper 22 suspended from a slider 19 reciprocated so that at the end of each stroke the slider is either above a roller 7 or below a roller 8. This slider is reciprocated by a crank mechanism 16, 18 driven by an electric motor 13. The crank shaft carries a flyer 17 having arms 23 which engage pegs 24 at the end of each up or down stroke of the slider 19 so as to move a carriage 12 carrying the slider and crank mechanism horizontally to position the gripper between the next pair of rollers.
Patent GB-1397748-A (GB)
Title: Method and apparatus for length stabilization of a cable
IPC: C21D8/06
Filed: 1972-07-26
Abstract: 1397748 Stretching USS ENGS & CONSULTANTS Inc 26 July 1972 [4 Aug 1971] 35012/72 Headings B3E and B3V The length of a cable is stabilized by subjecting the cable while moving to tensioning cycles each consisting of the applications of a prestressing load followed by a relaxing load. As shown, an armoured electrical oil well lagging cable 2 is fed from a reel 4 to a driven take-up reel 28. Between the reels 4, 28 are braking sheaves 8, fixed sheaves 10-22, a movable sheave 24 and power-driven capstan sheaves 26. The braking sheaves 8, through gearing 70 and a gear-box 72, drive a pump 74 which is connected to an adjustable relief valve 80 for setting the braking effect. The valve 80 is by-passed cyclically by operation of a valve 84 by a motor-driven cam 86, so as to vary the prestressing load and return the pumped fluid to a tank 76. An hydraulic jack 56, 58 for the sheave 24 is supplied through a pump 62, an adjustable relief valve 64 and a valve 66, the supply being controlled by an electricallyoperated valve 50 which is connected to a potentiometer (48), Fig. 3 (not shown), operated by movement of the sheave 24. In operation, when the valve 80 is being bypassed for minium braking effect, the released tension tends to move the piston 56 to the left, thus actuating the potentiometer (48) for resetting valve 50 and moving the piston to the right to a neutral position for minimum tension. Conversely, when valve 80 is not being bypassed, the increased tension moves the piston 56 further to the right only to be returned to the left to a neutral position for maximum tension. An electrical heating system 90 may be operative during tensioning.
Patent GB-894072-A (GB)
Title: Improvements in or relating to motor-driven percussion tools, such as hammers
IPC: B25D11/12
Filed: 1960-10-13
Abstract: 894,072. Percussive tools. BOSCH G.m.b.H., ROBERT. Oct. 13, 1960 [Oct. 14, 1959], No. 35028/60. Class 124. A motor driven tool in which force is transmitted to the tool 13 by an air cushion formed between an end face 42 of a piston 12 and an end of a cylinder 10, has a non-return valve 36 permitting air to enter the other end of the cylinder during working strokes and pass through a passage 40 to form the cushion at the top of the return stroke. The cylinder is reciprocated by a connecting rod 20. The piston has an extension 15 which engages the tool, the tool being held in a locking mechanism 30, 31 which rotates the tool through a small angle during each working stroke. When the tool is lifted from the work the air forming the cushion escapes through a bore 45 to render the tool inoperative. In a modification the piston is reciprocated by the connecting rod and the cushion is formed at the lower end of the cylinder which carries the extension engaging the tool.
Patent GB-502079-A (GB)
Title: Improvements in rotary blowers
IPC: F04C18/12
Filed: 1938-12-02
Abstract: 502,079. Rotary blowers. KRUPP GERMANIAWERFT AKT.-GES., F. Dec. 2, 1938, No. 36148. Convention date, Dec. 3, 1937. [Class 110 (ii)] A blower of the type shown, is provided with holes h, or a slot g, to connect a space f both with the delivery e and the suction d for a short space of time, to prevent sudden pressure changes, and noise during the delivery. The position of the apertures h, g is such that a pressure wave moving backwards from the delivery e does not reach the suction d before the latter is cut off by a rotor c. The backflow through the apertures is substantially radial to the axes of the rotors.
Patent GB-440523-A (GB)
Title: Improvements in vacuum cleaners
IPC: A47L9/19
Filed: 1934-12-07
Abstract: 440,523. Vacuum - cleaner filters. ELECTROLUX, Ltd., Luton, Bedfordshire.- (Assignees of Inventia Patent-Verwertungs- Ges. ; 20, Fronwaag Platz, Schaffhausen, Switzerland) Dec. 7, 1934, No. 35217. Convention date, Dec. 30, 1933. [Class 8 (ii)] In a vacuum cleaner, the increased local vacuum caused by clogging of the filter is caused to operate a diaphragm which acts directly on a pivoted loaded indicator 33 observed through a window 39.
Patent GB-286584-A (GB)
Title: Improvements in vacuum cleaners
IPC: A47L5/06
Filed: 1927-12-29
Abstract: 286,584. G³nthermann, C. F. Dec, 29, 1927. Model machines.-A toy vacuum cleaner has a fan and flywheel actuated by rack and pinion. A pinion 2<1> on the fan shaft is engaged by a gear wheel 14 when the rack 4 is depressed, and the fan is rotated accordingly. When the rack is returned by its spring the wheel 14 is released from engagement. The rack is depressed by hand, or may be engaged by and actuated by a catch on the handle, the catch being released when the handle is in a given position.
Patent GB-736489-A (GB)
Title: Improvements in or relating to machine for applying tape to carton blanks
IPC: B31B1/90
Filed: 1953-12-18
Abstract: In a machine for adhesively applying tape 9 to carton blanks 3 (see Group XV) the tape is fed from a supply roll 37, Fig. 1, by means of friction rollers 57, 58 and after being glued to a carton blank is severed by means of an electrically-operated oscillating knife blade 110.  The blanks 3 are successively moved along rails 2 of the machine by a pusher 4 and glue is applied to a part of the lower face of each blank by a roller 14 rotating in a glue pot 12.  The roller 14 is mounted at 15 on a lever 16 which pivots around a drive shaft 17.  A tension spring 18 connected to the free end of the lever 16 normally maintains the roller 14 in a position in which it is engaged by the lower surface of the blank 3.  As the leading edge of the blank advances beyond the roller 14 it engages an arm 19 on the lever 16 and causes the roller to move out of contact with the blank.  The glue roller is caused to rotate continuously by the drive shaft 17, the drive being transmitted by a chain 22 mounted on sprockets 20, 21.  Excess glue is removed by a scraper 23.  A glue roller 25 rotates partly in the side wall of a glue pot 26 and deposits glue on the top surface of the blank 3.  The roller 25 is driven by a chain 28 passing around a drive sprocket 29 on the shaft 17.  A predetermined length of tape 9 hangs in front of the advancing blank 3 which, as it continues to advance, passes over an additional supporting bar 10 having a down-turned end 11 whereby the tape 9 is swung upwardly against the lower face of the moving blank to which it adheres by virtue of the glue applied to the lower face of the blank. <PICT:0736489/III/1> <PICT:0736489/III/2>
Patent GB-1236145-A (GB)
Title: Rapid charging of batteries
IPC: H02J7/10
Filed: 1969-07-14
Abstract: 1,236,145. Charging batteries. McCULLOCH CORP. 14 July, 1969 [15 July, 1968; 26 June, 1969], No. 35323/69. Heading H2H. A battery is charged rapidly by high-current D.C. pulses between which the battery may be discharged for very short periods. In the circuit of Fig. 1, a battery 1 is connected to a source 2 of pulses through a thyristor 13 which is turned on when the source voltage exceeds the terminal voltage of the battery. The high current causes the battery voltage to rise very rapidly at first and subsequently to rise more slowly until the fully charged state is reached. This is signalled by the breakdown of a Zener diode 29 which triggers a further thyristor 24, thus diverting current from the gate of thyristor 13 and turning it off. A trickle charge may then flow through a lamp 28. Directly across the battery terminals, there is connected a transistor 4 which can be switched on briefly by a timing circuit 5 responsive to the battery voltage. When the transistor is switched to its conductive state, a large discharge current flows from the battery. Preferably, the discharge period lasts about 2 microseconds, this time being the period of a highfrequency signal which is stated to occur as a result of a resonance effect in the battery. An inductor 19 ensures that discharge occurs only when the thyristor 13 is blocked. During the initial charging period, discharge occurs at the rate of perhaps once a second, the rate increasing as the battery charges. During a discharge pulse, the terminal voltage momentarily decreases by about five volts. The thyristor 24 may be in thermal contact with the battery so that any excessive temperature rise causes charging to be cut off. In a further embodiment, Fig. 7 (not shown), the transistor 4 is replaced by a pair of cascade connected transistors and the circuit is compensated for temperature variations by the inclusion of a thermistor.
Patent GB-1509588-A (GB)
Title: Device for shaping and transporting a coil
IPC: A44B19/10
Filed: 1975-08-27
Abstract: 1509588 Coiling helices YOSHIDA KOGYO KK 27 Aug 1975 [5 Sept 1974] 35328/75 Heading B5A [Also in Division B3] Apparatus for shaping a helix from filamentary material W and transporting the helix comprises a body 11, a screw 12 rotatably mounted in a first cavity 14 in the body, an endlessly toothed circulating device extending within a second cavity 17 communicating with the first cavity, and a mandrel 23 extending between the screw and circulating device in conformity with the periphery of the latter. As shown, the helix is an element of a sliding clasp fastener, and is wound by a rotary head 25. The circulating device is a gear wheel 18, toothed at the same pitch as the screw and driven by shaft 19, and the mandrel is extended at 23<SP>1</SP> round the wheel, leading the helix to a die-wheel where the helix is set by heat. In another embodiment, the circulating device is an endless toothed belt trained around a driven sprocket, Fig. 2 (not shown).
Patent GB-467974-A (GB)
Title: Improvements in or relating to hinges
IPC: E05F1/10
Filed: 1935-12-21
Abstract: 467,974. Door-operating appliances; hinges. BENHAM & SONS, Ltd., CLARKE, W. L., and LEES, N. E. Dec. 21, 1935, No. 35455. [Classes 65 (i) and 65 (ii)] A drop-down door 1 of an oven is hinged by pins 4 fixed to the door, for example by bolts, and bearing in bushes in the door frame, and each pin 4 carries an eccentric member 9 which is rotated by the opening movement of the door against the action of a spring 14 pressing upward on a block 10 on which the member 9 bears ; the lower end of the spring bears on a member 12 rocking on an adjustable seat 13, and a stem 11 on the member 12 slides in a bore in an extension of the block 10 to abut against a cushion member 17 in this bore in order to limit the opening of the door, the arrangement being such that in this limiting position the spring is substantially on deadcentre so that it does not overcome the weight of the door. The moving parts are arranged in a recess in the oven, and are enclosed by a cover 3.
Patent GB-1520483-A (GB)
Title: Fingerprint checking apparatus
IPC: G06K9/00
Filed: 1975-08-28
Abstract: 1520483 Prisms; viewing fingerprint patterns SPERRY RAND CORP 28 Aug 1975 [30 Aug 1974(2)] 35489/75 Heading G2J Apparatus for forming an image of a fingerprint pattern which can be viewed directly and/or be fed to image processing equipment comprises a transparent right triangular prism 23 having a concave portion 24 in one side to accomodate the finger 5. In use, a parallel beam of light is directed on to another side of the prism and is refracted so that an image 6 of the fingerprint pattern is formed within the prism as shown. The image 6 can be viewed directly using a half-silvered mirror to intercept rays 7,7a or the image 6 may be re-imaged by a lens on to an optical pick-off (e.g. vidicon or camera).
Patent GB-903450-A (GB)
Title: High density, soft phosphate glass and method of making it
IPC: G21F7/02
Filed: 1960-10-17
Abstract: 903,450. Glass manufacture. CORNING GLASS WORKS. Oct. 17, 1960 [Oct. 27, 1959], No. 35519/60. Drawings to Specification. Class 56. [Also in Group XL (a)] A glass for a radiation shielding window consists of 26-51% P 2 O 5 , 33-56% H 2 O, 12-26% of one or more of PbO, HgO, H 2 O 1  and 0-5% of one or more of Al 2 O 3 , BaO, ThO 2 , Cs 2 O, Bi 2 O 3 , K 2 O, SnO, ZnO, these being molecular proportions, the maximum total weight of P 2 O 5  and H 2 O being 70%. Small quantities are prepared by heating the ingredients in a platinum or non-silica refractory (e.g. alumina or zirconia) crucible until all are dissolved and cooling rapidly. For larger quantities the water and P 2 O 5 , if desired with the addition of H 3 PO 4  and some HNO 3 , are heated and the metallic constituents added gradually as they dissolve. Pb and T1 and the minor metallic constituents may be added as nitrates or the minor constituents as carbonates. Pb and P may be added as lead meta-phosphate glass. The molten, glass may be cast directly into a housing lined with glass, enamel or noble metal and closed by fused silica end plates held by clamping rings with gaskets of metal tubing or rubber covered with platinum, gold or tantalum.
Patent GB-1428189-A (GB)
Title: Fluid control valves
IPC: F16K1/42
Filed: 1973-07-25
Abstract: 1428189 Valves APPLICATION DES GAZ 25 July 1973 [25 Oct 1972] 35521/73 Heading F2V A valve for controlling fuel gas comprises a screw-threaded valve member having a tapered circular cross-sectioned sealing portion 7e and a cylindrical graduating portion 7f cooperable with a resilient seat 4 having a non- circular cross-sectioned port 4a, the arrangement being such that the valve seat is progressively deformed by the tapered sealing portion 7e as the valve member is moved towards the closed position, until the seat 4 conforms exactly to the shape of the valve member.
Patent GB-345321-A (GB)
Title: A new or improved machine for coating and applying labels and the like
IPC: B65C1/02
Filed: 1929-11-21
Abstract: 345,321. Labelling-machines. SPENCER, A. T., Canford, Knighton Road, Leicester. Nov. 21, 1929, No. 35621. [Class 73.] A machine for coating and applying labels to box blanks &c. comprises a magazine to hold the pile below a coating and separating device, the labels resting on a yielding support having a locking device which holds the support rigid when the coating &c. device is applied, is then temporarily released to allow the pile to yield, is then operated to fix the support while the label is separated, and then released to allow the pile to rise. The separator is made in two parts whereby the label can be seized by grippers while still held by the separator and transferred to an applying station comprising a presser also made in two parts so that the label is held by the grippers while being applied. The labels are held in a pile 5 and are separated by a reciprocating glueing pad 20 made in two sections separately operated by plungers 21, 22 from cams on a cam shaft 34. The pad 20 is moistened by means of a roller 38 mounted in a bath 37 carried on a horizontally-reciprocating carriage which carries grippers 48 and is operated by a link 44 from the cam shaft. The grippers are operated by a link 57 engaging a rail 50 which is carried by parallel links 51, 52 and is lowered to open the gripper by a cam-operated link 72. The blank &c. to which the label &c. is to be affixed is carried on a pad 67 mounted adjustably on a cam-operated slide 68 and the label is applied by a pad made in two separately-operated parts 58, 58a the surface of which pad is slightly convex. The labels are pressed upwards to the mouth of the label holder by a spring follower 10 which is rigidly held by means of a transverse rod 12 operated by a nut 13 rotated by a cam-actuated arm 15.
Patent GB-436940-A (GB)
Title: Thermionic valve modulation systems
IPC: H03D7/06
Filed: 1934-01-18
Abstract: 436,940. Valve-circuits for wireless reception. HAZELTINE CORPORATION, 15, Exchange Place, Jersey City, New Jersey, U.S.A.-(Assignees of Wheeler, H. A. ; 18, Melbourne Road, Great Neck, New York, U.S.A.) Jan. 18, 1934, No. 35645/33. Convention date, Jan. 30, 1933. [Class 40 (v)] , In a modulating or frequency changing multi-electrode valve-circuit, a virtual cathode comprising an aggregation of electrons is produced between a pair of grids by applying positive potential to the grid nearer the actual cathode and a negative potential to the other grid, the signals being applied to a grid, e.g. the positive grid, between the virtual cathode and anode, and the density of the virtual cathode being periodically varied by local oscillations. In Fig. 1 (not shown), a local source of oscillations is connected to a grid between the actual cathode and the positive grid, but in other arrangements these two grids and the actual cathode form a triode oscillator. The negative potential on the signal grid may be automatically varied to control volume. The Specification describes the operating condition of the valve for producing optimum effects such as independence of the oscillator and modulator sections of the valve. In the frequency changer shown in Fig. 2, the cathode 1 and first and second grids 2, 3 form the oscillator, the cathode 1 being connected to a tapping on the tuned coil 19 of grid 1 to form the coupling between the circuits of grid 1 and the grid 2 which is virtually the anode of the oscillator. The incoming signals are applied to the tuned circuit of outer grid 4 which is relatively close to grid 3, being indicated by dotted line 7. Manual or automatic volume control bias may be applied over terminal 17 to the grid 4 which has variable-mu characteristics, bias variations having substantially no effect on the oscillator portion of the valve. In modifications, Figs. 3 to 9 (not shown), the following features are used alone or in combination (1) separate back coupling coil in the circuit of cathode 1 or grid 3, (2) combined capacitative and inductive feed back which facilitates ganging of condensers 14, 18, (3) a grid leak and condenser for the oscillator grid 2 to develop a negative bias for amplitude and grid current limitation, (4) separate resistance or choke feeds for the high tension to anode 6 and grid 3, (5) a high potential screen between grid 3 and the anode. The Specification also describes complete superheterodyne receivers embodying the above features. Fig. 10 (not shown), employs manual volume control, whereas Fig. 12 (not shown), employs automatic volume control from a diode-triode second detector. Specifications 293,462, [Class 40 (v)], 398,882, and 435,383 are referred to.