baber/WOPTO huggingface dataset:
Patent GB-657517-A (GB)
Title: Clamping device
IPC: B23B23/00
Filed: 1948-11-16
Abstract: 657,517. Tailstocks; centres; work-holders. NATIONAL BROACH & MACHINE CO. Nov. 16, 1948, No. 29731. Convention date, Jan. 19. [Class 83 (iii)] A tailstock or other work-holding device comprises means for advancing or withdrawing a work-engaging element 33 in relation to an actuating element 36 upon rotation of the latter, a tapered portion 38 of the actuating element being adapted to coact with a like seat 23 in a support 11 housing the elements, and to be urged into frictional locking engagement therewith by reactive forces which arise from contact between the work-engaging element and the work and which act in the direction in which the work-engaging element is moved by rotation of the actuating element. A quickpitch nut 25, secured to a sleeve 30 carrying the rotating centre 33, is engaged by the actuating element 36. Rotation of a handle 40 advances the centre to grip the work and seat the portion 38 firmly in the support.
Patent GB-997916-A (GB)
Title: Improvements in dishwashing machines
IPC: A47L15/50
Filed: 1962-08-03
Abstract: 997,916. Dishwashing machines. GENERAL ELECTRIC CO. Aug. 3, 1962 [Aug. 7, 1961], No. 29860/62. Heading A4F. In an automatic dishwashing machine having a tub open at the top, a dish rack is divided into front and rear sections 45, 46, the front section 45 being connected through a linkage system to a cover 13 so that it is raised when the cover is opened to overlie the rear section 46. The linkage system comprises two L-shaped arms 55 pivoted to the front and rear sections at 56 and 51 respectively, and a bracket 52 extending at right-angles to the cover 13 and pivoted at the front section at 53.
Patent GB-981381-A (GB)
Title: Improvements in lever arms for float valves
Inventor: HARRISON FREDERICK CHARLES
IPC: F16K33/00
Filed: 1960-08-30
Abstract: 981,381. Valves. CISTERNS Ltd. Nov. 6, 1961 [Aug. 30, 1960], No. 29903/60. Heading F2V. A lever arm for a float valve comprises an arm 1 made of synthetic plastic having one or more reinforcing ribs, the arm being of H-shape or preferably T-shaped cross-section. One end of the arm is trifurcated, each trifurcation 2 having a hole to receive a pin 4 whereby the lever may be pivoted to a bifurcation on the valve body 5. The opposite end of the arm is provided with a hole to receive a stem 12 of a stud which is secured to the lever arm by a wing nut 13. The stud has a second threaded stem 14 on which the float is screwed. This arrangement allows rotation of the stud to position the float. The contacting surfaces of the stud and lever arm may be ribbed to provide interlocking surfaces which prevent rotation as the wing nut is tightened.
Patent GB-1294648-A (GB)
Title: Apparatus for drying textile materials
IPC: D06C7/00
Filed: 1970-06-19
Abstract: 1294648 Joining fibrous material UNISEARCH Ltd 19 June 1970 [25 June 1969] 29917/70 Heading F4G To achieve rapid uniform drying of a non- uniform layer L of fibrous material (such as wool fibres, cloth, hanks and other textile materials) by passing heated air through it, the layer L is supported by a porous member supported by a perforated backing member in which the total area of the perforations therein forms 5% to 20% of the total area thereof. In an embodiment, Fig. 1, the layer L is passed through two separate chambers 12 and 13 through which heated air is passed in opposite directions, and is supported by porous members which may be wire mesh conveyer belts 10 and 11 supported by perforated backing plates 14 and 15. Negative pressures are maintained in the lower part of the chamber 12 and the upper part of the chamber 13, by an exhaust fan 22 and a duct 24. A cast iron wear grid 16 may be interposed between the conveyer belts 10 or 11 and the plates 14 or 15. Seals 25 and 26 (preventing ingress or egress of air to or from the apparatus) each comprise a chamber 32 having flexible flaps 31 engaging the conveyer belts 10 and 11, each chamber 32 being maintained at atmospheric pressure by connection (via adjuster 33) with the negative pressure parts of chambers 12 and 13. A similar seal 27 is provided between the chambers 12 and 13. Rollers or wear pads are provided at 37. In another embodiment, Fig. 6, the backing member is in the form of a perforated drum 41 covered by a porous mesh member 42, and the layer L is carried by a porous conveyer belt 43, heated air passing from a chamber 46 into the drum 41 from which it is withdrawn.
Patent GB-472204-A (GB)
Title: Improvements in or relating to lifting dogs and like carriers for metal sheets and the like
IPC: B66C1/32
Filed: 1936-11-04
Abstract: 472,204. Lifting-dogs. UNITED ENGINEERING & FOUNDRY CO. Nov. 4, 1936, No. 30038. Convention date, March 4. [Class 78 (iv)] Lifting-dogs for handling objects of considerable variation in size, are operated by cam and toggle mechanism arranged to vary the setting of the toggle levers as the jaws open and close, thus preventing these levers from reaching an angle which would necessitate too great an effort in moving the jaws. The arms 14, Fig. 2, carrying the jaws, are pivoted at 16 to a frame member and are thrust apart by toggles 44, 52 when a sliding member 40 is depressed by a corresponding depression of the hand-operated bail 78, pivoted to the frame at 66 and connected to the member 40 by a link 70. The movement of the member 40 also spreads arms 46 by contact with wedge-shaped surfaces on the framing, thus imparting a corresponding rotation to the shafts 42 which is communicated to the levers 44 to increase the effective length of the levers 52 and impart an added outward movement to the jaws. One or more catches 79 may engage the bail to lock the jaws in any desired position. The weight of the arms 14 and jaws is mainly balanced by the spring 24. The framing comprises an I beam with pairs of spaced angle irons fixed laterally across its ends, each pair of irons serving to mount one pair of arms 14 and the corresponding mechanism.
Patent GB-307764-A (GB)
Title: An improved method of weaving chenille carpets
IPC: D03D39/00
Filed: 1927-11-10
Abstract: 307,764. Koch, L., (trading as Koch & Te Kock). Nov. 10, 1927. Chenille fabrics. - Chenille wefts a alternating with two stiffening wefts b pass over and under pairs of warps c whilst the wefts b pass between the threads of each pair, whereby the chenille wefts produce a pattern in the form of raised checks at the back of the carpet.
Patent GB-465131-A (GB)
Title: Trimming devices for aircraft flying controls
IPC: B64C13/00
Filed: 1935-11-01
Abstract: 465,131. Controlling aircraft. VICKERS (AVIATION), Ltd., PIERSON, R. K., and FIRMAN, R. A. Nov. 1, 1935, No. 30206. [Class 4] Means for adjusting trimming devices for aircraft flying controls in which small auxiliary surfaces are fitted to a main control surface, comprise a setting lever mounted for adjustment in two different directions, two separate mechanisms, one actuated by adjustment of the setting lever in one direction and the other by adjustment of the lever in the other direction and connections operatively connecting the mechanisms with the respective trimming devices. As shown, a spindle a provided with a knob a<1> is rotatable in a cross-head b integral with trunnions b<1>, b<2> mounted in plates c, c<1>. The crosshead b has arms b<3>, b<4> carrying drums d, d<1>, d<2>, d<3>. The drums d<2>, d<3> are adjusted in opposite directions upon rotation of the knob a' through bevel gearing e, e<1>, e<2>. The drums d, d<1> are adjusted in opposite directions upon fore- and-aft movement of the spindle a by a pinion g engaging a fixed arcuate rack f<1> and a pinion d<5> engaging teeth on the two drums. Each pair of drums d, d<1> and d<2>, d<3> are connected respectively to gear for adjusting the auxiliary surfaces on the rudder and elevator. This gear comprises a lever i<6> which receives at one end a projection on the auxiliary surface and at the other end comprises a nut i<5> which engages a screwed spindle i' connected to drum i<2>, i<3> operated from the drums d, d<1> and d<2>, d<3>. The pinion d<5> may be dispensed with in which case two fixed racks are provided. Movement of the various mechanisms may be limited by limitation of the number of teeth.
Patent GB-294815-A (GB)
Title: Egg cartons
IPC: B65D85/32
Filed: 1927-11-10
Abstract: 294,815. Benoit, L. Nov. 10, 1927. Boxes formed from special blanks; partitioned and cellular boxes; covers.-In an egg carton in which a number of slotted cross walls B are inserted into and engaged with a slotted folded blank A, the cross walls are provided with lugs 52 obstructing the entrances to the slots 50 therein so that the cross walls and blank are yieldingly interlocked at the slots and prevented from complete disassembly either in the set-up condition shown or when collapsed flat for storage purposes. As shown, the entrance to each slot 50 is flared at 51 and the lug 52 extends towards the flare and lies within a notch 36 in the folded edge of the blank A, or the lug may be disposed in a slot in the doubled section c of the blank. The blank A may have lugs disposed at the sides of the. slots in the sections d to engage holes in the cross walls or the cross walls may have additional lugs below the lugs 52 to engage slots in the doubled section c of the blank A. The side edges of the walls B are notched to provide lugs 46 which engage the ends of the slots in the blank A, and these lugs may be provided with additional projections which engage holes in the, blank A or additional pro. jections disposed at the side of the notches opposite the lugs 46 may engage holes in the. blank A. The cover portions f may have sections g which are inserted in the slots 50 to close the carton, and these sections may be stapled to the doubled section c of the blank A, or the edges of the sections g may be bent back to engage under the upper edges of undercut notches provided at the bases of the slots 50 in the cross walls. The cover portions may extend completely across the carton with the sections, g extending down towards the lugs 46 and secured to the adjacent cover portion by staples or tongue and slot fastenings; one cover portion may be disposed an appreciable, distance above the other so as to withstand shocks and protect the eggs.
Patent GB-193119-A (GB)
Title: Improvements in and relating to plan sifting machines
IPC: B07B1/38
Filed: 1921-11-14
Abstract: 193,119. Conrad, H. Nov. 14, 1921. Sieves with compound motion.-A plan-sifting machine consists of two superposed sieve boxes c, d suspended by rods a., band having horizontally arranged betwen them a driving disc f which is provided with an eccentrically arranged mass x. To the centre of the bottom of the upper sieve and the centre of the top of the lower sieve are attached crank pins h, i engaging with guide holes in the mass x and arranged so that one lies in the centre of the disc f and the other is symmetrically situated on the opposite side of the centrek of the mass x. The disc f is driven by means of a belt n which passes over pulleys m supported by brackets l attached to the upper sieve box. The two sieve boxes are connected by flexible tubes e.
Patent GB-773053-A (GB)
Title: Improvements in or relating to oil filters with an over-pressure valve having a contact pin for a signalling device
IPC: B01D35/143
Filed: 1955-10-24
Abstract: 773,053. Filters. KNECHT, A. Oct. 24, 1955 [Nov. 10, 1954], No. 30304/55. Class 46. An excess pressure by-pass valve comprises a closure member 15 operating in a valve sleeve 13 which is screwed radially into a cylindrical flanged body 12 and which communicates with a passage 21 forming a continuation of the inlet 7 of an oil filter and with a by-pass passage 9. The closure member 15 has connected to it a contact pin 16 actuating a visible or audible signalling device (not shown). An " edge "  filter element 1 is supported by a headpiece 2 fixed to the top of the filter casing 3. The cylindrical flanged body 12 is fixed to the inlet face of the casing.
Patent GB-1281954-A (GB)
Title: Wall plug assembly, particularly for affixing facings
IPC: E04F13/08
Filed: 1970-06-23
Abstract: 1281954 Wall plug assembly HILTI AG 23 June 1970 [1 July 1969] 30307/70 Heading F2H  A wall plug assembly comprises a plug 2 having an axially slit front portion and a non- expandable sleeve-shaped rear portion 21, an extension shank 4 having an internal bore and one end insertable in or joined to the rear portion of the plug 2, an expanding sleeve 5 insertable in the other end of the shank 4, and a securing screw 3 adapted to extend through the sleeve 5 and shank 4 into the forward part of the plug portion 21, and an internal screwengaging formation, e.g. a screw thread 10, provided between the forward end of the plug portion 21 and said other end of the shank 4 for securing the screw 3. The shank 4 may be connected to the plug 2 by projections 42 (Fig. 3, not shown) which co-operate with the slits in the plug and/or the two may be joined with adhesive. The assembly may be formed of plastics material and the shank body may be of increased thickness at that portion where it is threaded. The rear end of the extension shank may be provided with a collar 43.
Patent GB-1022316-A (GB)
Title: Buffer
IPC: G06F5/06
Filed: 1963-07-31
Abstract: 1,022,316. Digital data stores. GENERAL PRECISION Inc. July 31, 1963 [Sept. 21, 1962], No. 30337/63. Heading G4C. Read-in to and read-out from a high-speed delay line buffer store is controlled by two control words interlaced in the store with one data word, the relative timing of the control words being used to open the necessary gates. As shown, the delay line 14, of fused quartz or the like, has a normal recirculation path via read circuits 18, AND gate 28, OR gate 26 and write circuits 16, a clock pulse generator 40 gating 16 and 18. The three words interlaced are designated A, F, and G, and a counter 42 receiving clock pulses C produces word clock pulses C A , C F , C G  to gate out these words from 34, 36, 38, the latter delivering the so-called fast output A F  of the information word A. Two flip-flops Q 1  and Q 2  control read-in from a " slow " source shown as a magnetic drum 12, and slow readout As respectively; when either of these is set gate 28 in the normal recirculation path is disabled. For read-in the line 14 is first cleared and the start switch 80 closed. This applies a pulse to gates 100-104, to insert a single 1 bit into the next positions of both the F and G words via gates 100, 74, 26 and 102, 70, 26, respectively, Q4 ensuring that the F bit is inserted first. This pulse also inserts an information (A) bit if a 1 bit is being read when the flip-flop Q 1  is set by a P 0  pulse (a timing pulse corresponding to A 0 ) through gates 96, 97. After one cycle time of the delay line 14, Q 1  is reset through delay 101 and the entered bits circulate as described above. When Q 1  is next set by a P 1  pulse (Q 3  was set by P 0  and remains set until the whole word has been read in) the read-out data is passed by gate 30 instead of 28, to AND gates 48, 50, 52, where ring counter 46 separates them, where they are clocked (by C pulses divided by three), the already inserted A and F bits being passed by gates 62 and 74, respectively, for reinsertion. The G bit is, however, delayed by 3 bit times (so that it is shifted into the next position in the G word) by unit 64, and also gates the next A bit from the drum after delay by another bit time at 72. Thus the F and G bits have shifted relatively to each other, and this action continues, the G bit moving down the G word to gate in successive A bits until all have been entered, when the AND gate 92 will be enabled to reset Q 3  and Q 1 .  For read-out.-The action is similar, gate 32 being used and the G-bit being shifted to successively gate out the A-bits at 68 under control of P 0 1-Pn<SP>1</SP> output pulses (which need not of course bear any relation to the P 0 -P n  pulses).
Patent GB-890489-A (GB)
Title: Servo systems
IPC: G01C19/38
Filed: 1960-09-02
Abstract: 890,489. Automatic positional control systems. SPERRY RAND CORPORATION. Sept. 2, 1960 [Oct. 28, 1959], No. 30341/60. Class 38 (4). [Also in Groups XXXVII and XXXVIII] To prevent hunting in a servo-system, the motor is fed with a combination of the error signal and its first derivative through a circuit which limits the combined signal when it has one phase sense relative to the direction of rotation of the motor, and applies no limit (or another limit) when the control signal is of the opposite sense, thus applying one limit to the accelerating torque of the motor but no limit (or another limit) to the decelerating torque. As shown (Fig. 1) a gyroscopic stable platform 10 for an aircraft has a pick-off 22, with its stator on the pitch gimbal 15 and its armature on the trunnion 24 of the inner roll gimbal 12. When gimbals 12, 15 are not perpendicular, an error signal 0 is developed in the pick-off, which is fed to a network 25 (Fig. 6) where it is combined with its derivative # in a predetermined ratio and fed through amplifiers 26, 28 to motor 20, which drives the armature of the pick-off through a trunnion 21. The latter carries a friction switch 41, which closes contacts 42, 43 for one direction of rotation and contacts 42, 44 for the other direction. Contact 42 is connected through diode 50 to a point B which is maintained at, say, + 6 v. by Zener diode 53; contact 44 is connected through diode 54 to a point C which is maintained at, say, - 6 v. by Zener diode 56. When the resultant control signal from amplifier 26 is positive, if the motor 20 is rotating in one direction contacts 42, 43 are closed, and the input signal to amplifier 28 at point A is limited to the + 6 v. of point B ; when the control signal is negative, it is blocked from the +6 v. at B, and the full negative control signal is applied to amplifier 28 to decelerate the motor. A similar effect is obtained when the motor rotates in the opposite direction. The amplitude ratio of # and # in network 25 is adjusted so that the combined signal changes sign at the correct point to make the motor come to stop when the error signal # is zero.
Patent GB-941405-A (GB)
Title: Improvements in variable speed drives
Inventor: BRADSHAW JOHN
IPC: D01H5/42
Filed: 1960-09-02
Abstract: 941,405. Automatic thickness control. T.T.M. (RESEARCH) Ltd. Sept. 4, 1961 [Sept. 2, 1960], No. 30353/60. Heading G3R. [Also in Division H2] A variable speed drive comprises two electromagnetic slip couplings having their output shafts coupled to an output member the maximum output shaft speeds being different and their input shafts driven at constant speeds, speed variation of the output member being obtained by varying the excitation of one or both couplings. In a textile machine a pair of tongued and grooved rollers 12, 13 are to be driven at a speed which increases with the thickness of the material S. This thickness is measured by a transducer 28 and combined with a feedback signal in unit 31 which is applied to an amplifier 32 differentially energizing two couplings 22, 23 driving the roller 13, a tacho generator 33 coupled to which supplies the feedback signal to unit 31. A circuit employing transistors is given in the Specification for the amplifier 32.
Patent GB-1177638-A (GB)
Title: Improvements in or relating to Photographic Scanning Devices.
Inventor: HOER KENNETH GEORGE
IPC: G03B27/72
Filed: 1966-07-06
Abstract: 1,177,638. Lamps. MUIRHEAD Ltd. 18 May, 1967 [6 July, 1966], No. 30358/66. Heading F4R. [Also in Division G2] A light-scanning optical projector for recording photographic images by scanning a photographic material with light from a lamp the illumination of which is controlled according to the density of the image to be produced, has a light-intensity control responsive to ambient temperature. The control is in the form of a pivoted shutter 4 in the path of the scanning beam, the shutter being moved by a temperature-responsive device 6 consisting of a temperature-sensitive coil inside a cylinder 7 mounted for rotary and axial movement within a casing 8. The rotary movement is effected by a bell crank operated by a radial arm from an adjusting screw. The axial movement is effected by a spring-loaded arm 12 engaging the end of the cylinder 7 and rotatable about a fulcrum by means of a screw. The temperaturesensitive coil may be replaced by a bimetallic strip acting on the shutter, another form of adjustment mechanism being used.
Patent GB-699499-A (GB)
Title: Improvements in portable or carrying cots
Inventor: ELLISON ELLEN
IPC: A47D13/02
Filed: 1951-12-29
Abstract: 699,499. Childrens cots. ELLISON, Ltd., J. P. Dec. 29, 1952 [Dec. 29, 1951], No. 30382/51. Class 52(ii) A carry cot for infants has each of its ends stiffened by a frame C pivoted to the bottom A and when erected engaging open hems or pockets B<SP>1</SP> along the upper edges of the ends A<SP>3</SP> and also engaging stiffening rods b housed in hems B along the sides A<SP>2</SP>. The frames may comprise rods enclosed in leather or fabic sleeves c stitched at the base to the bottom A or the end frame may be a board incased in a leather or fabric case. The bottom A may be provided by a sheet of cardboard &c. D upon which a mattress is arranged. To fold the cot the end frames are folded down on to the bottom A and the sides A' and A<SP>3</SP> folded over the mattress. Looped handles are provided.
Patent GB-188659-A (GB)
Title: Improvements in apparatus for operating vacuum liquid-fuel elevators for engine carburettors and for the like purposes
IPC: F02M37/02
Filed: 1922-11-07
Abstract: 188,659. Cozette, R. J. P. E. Nov. 14, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Vacuum apparatus.-The suction chamber of the fuel elevator is connected by pipes 6, 7, 8 to two valve chambers 9, 10 communicating by pipes 11, 12 with two points A, B in the induction pipe on opposite sides of the throttle valve. When the suction is greater at the point A than at the point B, the valve 13 cuts off the pipe 6 from the pipe 11, while the valve 14 is lifted against the end of the pipe 12, and communication between the pipe 6 and the induction pipe and the suction elevator is established through the pipes 6, 8, 12 and ports 12<1>. When, owing to the opening of the throttle 5, the suction at the point B exceeds :hat at the point A, the valve 14 closes the pipe 8 and the valve 13 rises and opens the pipes 7, 6 to the pipe 11. In another form, the pipe 11 opens into an arrangement of Venturi tubes in the induction pipe. The valve boxes 9, 10 may be formed as chambers in a single casing.
Patent GB-965030-A (GB)
Title: Process for the production of foamed cross-linked polymers
Inventor: SKOCHDOPOLE RICHARD ERNEST
IPC: C08J9/14
Filed: 1962-08-09
Abstract: Foamed cross-linked copolymers of ethylene and propylene, mixtures of copolymers of ethylene and propylene with polypropylene, polybutadienes, copolymers of ethylene and divinyloxyethane and copolymers of isobutylene and isopropenyl benzylchloride are prepared by foaming a composition of the polymer with a blowing agent and before substantial collapse of the foamed polymer has occurred, subjecting the foamed polymer to irradiation for 1-1800 seconds to provide a dosage of from 1 to 20 megarads.  Suitable copolymers contain 25-65% ethylene and 75-35% propylene or at least 80% of ethylene/propylene copolymer and not more than 20% polypropylene. The blowing agent may be used in amount 0.05 to 5 gram moles per 100 grams of polymer and may be isobutane, propane or a fluorinated aliphatic compound or a mixture thereof.