baber/WOPTO huggingface dataset:
Patent GB-777218-A (GB)
Title: Improvements in the preparation of linear polyesters
IPC: C08G63/688
Filed: 1953-10-02
Abstract: Linear polyesters are made by condensing a p : p1-sulphonyl dibenzoic ester of formula: <FORM:0777218/IV(a)/1> where R1 and R4 are o -hydroxyalkyl radicals containing 1 to 6 carbon atoms or alkyl radients containing 1 to 6 carbon atoms with excess of a polymethylene glycol (or ester thereof) of formula: R5O-(CH2)p-OR6 where p is 5-12 and R5 and R6 are hydrogen atoms or acyl radicals containing 2-4 carbon atoms.  The reaction mixture may also include a polymethylene glycol containing 2-4 carbon atoms or a small proportion of an isomer or homologue of the p : p1-sulphonyl dibenzoic ester.  The first part of the condensation is effected in an inert atmosphere, generally at 150-220 DEG  C., whilst the latter part is effected at 225-310 DEG  C. under vacuum (generally less than 5 mm. of Hg. pressure). Condensation catalysts, solvents in which the condensation reaction may be effected, solvents for the polyester and uses of the polyester are the same as those disclosed in Specification 777,220.  In examples a diester of p : p1-sulphonyl dibenzoic acid is condensed with penta-, hexa-, octa-, deca- or dodeca-methylene glycol, or a mixture of hexamethylene glycol and ethylene glycol.  Specifications 777,21 and 777,216 also are referred to.
Patent GB-283093-A (GB)
Title: Improvements in biscuit making machines with respect to the cutting out mechanism
IPC: A21C11/10
Filed: 1927-05-03
Abstract: 283,093. Male, R. March 1, 1927, [Convention date]. Sheet-cutting machines.-In a biscuit-making machine. in which the rolled-out dough sheet is conveyed continuously to cutting-cut mechanism, the cutters 23, Fig. 3, are fixed to a hollow spindle 24, vertically guided in a casing 28, and loosely embracing a cam-spindle 26. The casing 28, Fig. 2, has cylindrical ends journaled in bearings 29 on levers 30 fixed to shafts 31 which are rotatably journaled in members 32, Fig. 5, which loosely embrace a shaft 35 and are vertically reciprocated in guides 37 by cams 34 engaging rollers 33 on the members. The members 32 thus impart vertical reciprocation to the casing 28, while levers 40, Fig. 2, fixed to the shafts 31, and operated by cams 38, oscillate the levers 30 to reciprocate the casing 28 horizontally. The casing 28 is held truly vertical throughout its motion by rods 44, which are forked to embrace cams 46. Cranks 42 on the spindle 26 engage slots 43 in the machine frame so that when the casing 28 is moved horizontally the spindle 26 is oscillated and upper and lower projections 26<2>. 26<1> on the spindle act alternately on rolls 27 on the member 24 to reciprocate the cutters. Spring- pressed scrap-plates 29<1>, Fig. 3, are provided adjacent the cutters. The conveyor is backed up as it passes under the cutters by a moving belt passing around a wooden support.
Patent GB-421844-A (GB)
Title: Improvements relating to links or the like for endless conveyor systems
IPC: B65G19/16
Filed: 1933-10-04
Abstract: 421,844. Endless - chain conveyers. REDLER, A., Dudbridge Works, Stroud, Gloucestershire. Oct. 4, 1933, No. 27340. [Class 78 (i)] [See also Group XXV] Each link 1 has an eye 2 at one end and a U -shaped part at the other end which after engagement with the eye 2 of the adjacent link is closed by being riveted to the cross-bar 6<b> of a flight 8. The cross-bar is provided with sprocket engaging portions.
Patent GB-386049-A (GB)
Title: Improvements in and relating to drilling machines
IPC: E21B3/00
Filed: 1931-10-01
Abstract: 386,049. Portable drilling-machines. HURD, F. W., 70, Cunningham Park, Harrow, Middlesex. Oct. 1, 1931, No. 27362. [Class 83 (iii).] A portable drilling-machine adapted to be driven by a flexible shaft coupled to a motor has a chuck axially movable in a casing and biased to one axial position such that a friction wheel attached thereto co-operates with a friction pinion secured to a stub shaft at rightangles to the chuck axis, means being provided for readily disconnecting the drive. The drill chuck 2, to which is rigidly attached the conical friction wheel 6, is mounted in ball bearings 3 in the casing 1 and is capable of limited axial movement against the pressure of a spring 4 ; this ensures that the wheel 6 is brought into proper frictional engagement with a pinion 10 carried by an eccentrically mounted sleeve 8, when the latter is rotated to the drive-engaging position. The flexible drive means is connected to the pinion shaft at 11 and variation in drill speed may be obtained by providing axial adjustment for the pinion so that it may engage the wheel 6 at different radii.
Patent GB-856263-A (GB)
Title: Improvements in and relating to machine tools
Inventor: LOUN BOHUSLAV
IPC: B23Q15/00
Filed: 1958-08-26
Abstract: 856,263. Machine-tool details. VYZKUMNY USTAV OBRABECICH STROJU A. OBRABENI. Aug. 26, 1958, No. 27405/58. Class 83 (3). A cross-slide of a planing, boring, &c. machine is automatically levelled relatively to a work-table by a gravity-influenced feeler L on said cross-slide which responds to angular deviations thereof and controls an auxiliary motor 16 which, through a worm-gear train 13-15, raises or lowers one end of the crossslide. The feeler, consisting of a pendulum armature 25, Fig. 2, suspended above a differential transformer 26, gives an electrical output corresponding to the angular deviation of the armature. The electrical output is caused by the variation of an air-gap between the armature 25 and transformer 26, which causes the magnetic flux of the secondary windings 26a, 26b to be out of equilibrium so that a difference of voltages exists between windings 26a, 26b. This voltage, amplified at 17, is conveyed to the motor 16 via a switching relay 18, thus driving a worm-wheel 10, rotatably mounted at 12 but prevented from moving axially, and forming a nut engaging screw-threads on a sleeve 8 splined in the machine-frame and supporting the bearing 7 for the adjusting screw 3 of the cross-slide. The deviation of the cross-slide is indicated by a gauge 19.
Patent GB-1192616-A (GB)
Title: Bipolar Pulse Generating Circuits
Inventor: HWANG YING-CHEN
IPC: H03K3/00
Filed: 1967-06-14
Abstract: 1,192,616. Semi-conductor diode pulse generators. GENERAL ELECTRIC CO. 14 June, 1967 [2 Nov., 1966], No. 27526/67. Heading H3T. In a circuit for generating a bipolar pulse including a charge storage diode 2, an impedance 3 and a source + V 1  for reverse biasing the diode, a source of unipolar pulses 11 having a magnitude greater than the reverse bias voltage is applied to the diode so as to cause the diode to conduct in the forward direction for a first period substantially less than the carrier life time of the diode and the diode reverts to its high impedance reverse biased state after a second period whereby voltages of opposite polarity are developed across the impedance 3 during the first and second periods to generate the bipolar pulse. This enables the time for each half cycle of the bipolar output pulse to be approximately equal. Initially diode 2 is reverse biased by +V 1 , a negative going input pulse at V B  causes the diode to conduct in the forward direction. This produces an output pulse at V o  in one direction until the input pulse ends when the diode conducts in the reverse direction producing an output pulse in the opposite direction until all the chargedcarriers have been removed when the diode snaps to its high impedance state. The input pulses may be in the form of square waves, half sine waves or triangular waves and the input to the diode at 9 may be amplified by a transistor (Fig. 3, not shown).
Patent GB-1407188-A (GB)
Title: Apparatus for crimping electrical terminals to wires
IPC: H01R43/042
Filed: 1974-06-21
Abstract: 1407188 Crimping severed terminals to wires AMP Inc 21 June 1974 [13 July 1973] 27538/74 Headings B3A and B3Q Apparatus for severing channel - shaped electrical terminals 1, joined together by carrier strips 2 in parallel side-by-side relationship from the carrier strips and for crimping the severed terminals to wires W1, W2, W3, Fig. 5, comprises a rotatable conveyer wheel 46 having projections 48 which extend between the terminals on the strip for feeding the strip to a crimping anvil 50 step-by-step, a crimping die assembly 72, Fig. 6, co-operable with the anvil to crimp the terminals to the wires, a device 38 for severing each terminal from the carrier strips, and a wire severing blade 36 arranged to enter a slot 76 in the die assembly to trim the wires prior to the crimping operation, the device 38 and blade 36 being mounted on a terminal guide member 30 which partially surrounds the wheel 46. The guide member and die assembly are exchangeable for use with terminals (1a), Fig. 10 (not shown), of shorter length. A film 11 of insulating material is bonded to the external surface of each terminal and is connected to the carrier strips via a slug (14), Fig. 1 (not shown), of similar material. The wheel 46 is keyed to a support block 45 which is rotatably supported on a shaft 44 which has a knob 52 exterior of the apparatus. A guide sheave 64 is mounted for rotation about an axis parallel to the shaft 44 and co-operates with a guide plate 66 which is pivotally mounted at a point 68. The die assembly 72 is fixed to one end of a die carrier 60 pivoted between plates 20, 22 on a shaft 70. The part 74 of the assembly comprises a female die 78 and wire holder 79 having a wire receiving slot 80. A series of links connect the die carrier to a driving link 96 connected to an operating lever 100. In operation, the guide plate 66 is rotated to expose the sheave 64 and a strip of terminals is fed around the sheave and led around the block 45 by rotation of the knob 52. The wheel is also rotated after raising a pawl 56 from a ratchet wheel 54 to free the wheel. A rib 34 guides the terminals past blades 38 for severing the terminals from the strips. Wires W1, W2 and W3 are inserted into guides 80 of the die assembly 72 and the knob 110 is pushed to turn the lever 100 anti-clockwise and drive the link 96 upwardly. Towards the end of the stroke of the die carrier 60, the cutting blade 36 enters the slot 76 to trim the wires. As the die cavities receive the anvil 50 the terminal on the anvil is crimped to the end portions of the wires. The crimped terminals are ejected from the apparatus by engagement with surfaces 124 of a block 24. The length of the stroke of the die assembly is adjustable by setting a wheel 118 to a desired angular position with a removable screw 120. Shorter terminals may be accommodated by using a guide sheave 64 which has checks (148) having first and second supporting surfaces (100), (152) for supporting terminals of different lengths.
Patent GB-1463671-A (GB)
Title: Wallcoverings
IPC: B44C7/00
Filed: 1973-06-11
Abstract: 1463671 Irradiated foamed film IMPERIAL CHEMICAL INDUSTRIES Ltd 5 June 1974 [11 June 1973] 27588/73 Addition to 1306373 Heading B5B [Also in Division C3] A wall covering comprises a foamed film formed from a blend of 60-90% by wt. of a low density ethylene polymer of density less than 0.934 g./cm.<SP>3</SP> and containing no more than 20% by wt. of copolymerizable monomers, and 40- 10% by wt. of a crystalline stereoregular olefine polymer made using a stereospecific catalyst, having an open celled structure and 40-90% by vol. of the film consisting of open cells and either (A) having the front surface (i.e. the surface to be printed thereon) corona discharge treated all over and the reverse surface corona discharge treated along bands adjacent the longitudinal edges of the film, or (B) having the front surface corona discharge treated all over with a greater degree of discharge treatment along bands adjacent the longitudinal edges of the film. The preferred crystalline olefine polymer is high density polyethylene of density 0À94-0À97 g./cm.<SP>3</SP>. The corona discharge treatment may be applied (A) to a film 1 led over an earthed roller 2, by means of electrodes 3, 5 and 6 (4 being a high voltage source); (B) to a film 9 passed between an earthed roller 8 and electrode 7; or (C) to a film 13, passed over rollers 10 and 11, by means of electrodes 12 and 14.
Patent GB-1492413-A (GB)
Title: Motor assembly
IPC: H02K11/00
Filed: 1975-06-30
Abstract: 1492413 Dynamo-electric machines MABUCHI MOTOR KK 30 June 1975 [2 July 1974] 27606/75 Heading H2A [Also in Division E1] A motor assembly comprises a motor 1 within a motor casing 2, a battery casing 4 rotatably connected to the motor casing, a wall 7 separating in gas tight manner the spaces within the motor and battery casings and contacts 11, 12 passing through the wall for connecting the motor terminals with the terminals of a battery mounted, in use, in the battery casing 4. The wall 7 is part of an intermediate casing 8 non- rotatably mounted in casing 4 but rotatably mounted on casing 2, relative rotation of the casings causing engagement or disengagement of contact 12 with motor terminal 18. The other contact 12 is permanently connected to the other motor terminal through a spring 16. The assembly may employ Ni-Cd batteries which can emit hydrogen. The gas-tight wall 7 prevents ignition of the hydrogen by a spark inside the motor easing.
Patent GB-519543-A (GB)
Title: Improvements in and relating to the control of electric hoists, lifts or the like
IPC: B66B1/48
Filed: 1938-09-22
Abstract: 519,543. Control of A.C. motors. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 22, 1938, No. 27655. Convention date, Sept. 23, 1937. [Class 38 (iii)] Braking.-Upon operation of a stop switch H, an alternating-current hoisting motor M is disconnected from its supply and a contactor SG is closed to connect a source of directcurrent to the motor, an auxiliary relay A being then de-energized to disconnect a brake coil B. When the mechanical brake controlled by the coil B becomes effective contacts BK open to de-energize the contactor SG and terminate the electrical braking. The control applies to the lowering operation of the hoist, and a slow lowering speed may be obtained by introducing the electrical braking by operation of a switch DG to energize the relay SG, the mechanical brake coil B remaining energized until the stop switch H is operated.
Patent GB-368207-A (GB)
Title: Improvements in vibrating sieves
IPC: B07B1/28
Filed: 1931-02-05
Abstract: 368,207. Sifting - apparatus. SALT UNION, Ltd., Colonial House, Water Street, Liverpool, and BENNET, R., Mere Heath House, Davenham, near Northwich, Cheshire. Feb. 5, 1931, No. 27687. Divided on 368,026. [Class 117.] In vibrating sieves, the frame comprises two longitudinal members 5, which are bowed in a direction perpendicular to the surface of the sifting cloth 6 and for:n a support for the free longitudinal edges thereof. Transverse supports 7 may be provided at intervals. The sifting cloth may be secured and tensioned at its ends by the means described in Specification 368,026, and may be further tensioned at the sides by bevelling the supporting parts of the longitudinal members 5 or providing them with bevelled packing strips 16. In the application described, a bank of sieves 1 is mounted on sponge rubber balls 3 and is vibrated by means such as an unbalanced pulley, pneumatic hammer or eccentric, or electrically, being guided by a sling 18.
Patent GB-297845-A (GB)
Title: Improvements in and relating to clutches, more particularly for driving self-laying track vehicles
IPC: F16D13/04
Filed: 1928-09-28
Abstract: 297,845. Stock Motorpflug Akt.-Ges. Sept. 29, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Clutches, friction.-A friction clutch, particularly applicable as one of a pair for driving and steering endless-track vehicles, comprises a cone 8, slidable by claws 7 on the driving-shaft 4, a cone 10 fast on the driven shaft 9 and an intermediate loose disc 15, pressed by a spring 16 against a lined flange 8<1> of the cone 8 and provided with cam-surfaces 13 to coact with a round pin 14 or complementary cam on the shaft 9, so that the clutch 8, 10 is put into engagement by the driving-effort. A loose brake-drum 19 carries pins 20, passing through arcuate slots 22, 21 in the cone 10 and disc 15, so that application of a brake-band 23 retards the disc 15 and releases the clutch . The slots 22 are of such length that the pin 14 cannot move on to the ascending face of the cam 13 when the disc is so retarded. The invention is applicable also to multiple-plate clutches.
Patent GB-427318-A (GB)
Title: Improvements in and relating to direction indicators for vehicles
IPC: H01H21/02
Filed: 1933-10-10
Abstract: 427,318. Mechanical switches without quick action; road-traffic signals on vehicles. OSHEI, W. E., and TRICOFOLBERTH, Ltd., Great West Road, Brentford, Middlesex. Oct. 10, 1933, No. 27936. [Class 38 (v)] [See also Group XXXVIII] In direction-indicators for vehicles operated by solenoids R, L or the like, the controlling switch comprises a rotary operating ring 6 carrying an arc-shaped contact 7 which always engages a spring-pressed ball contact 8 and may be moved into engagement with one or other of two spring-pressed ball contacts 12, 13 according to the direction of rotation, and an indicating lamp 27 is connected in the circuits as shown. When the contact 7 is brought into engagement with the contact 12, a circuit is completed from the battery 9 to the solenoid R actuating the corresponding indicator. A parallel circuit is simultaneously completed through the lamp 27 and solenoid L. This causes the lamp to light up, but its resistance is sufficient to prevent the solenoid L operating its indicator. The ring 6 carries round with it an arrow 35 to indicate its position.
Patent GB-449680-A (GB)
Title: Improvements relating to adsorption apparatus
IPC: B01D53/04
Filed: 1934-09-29
Abstract: <PICT:0449680/III/1> In an adsorption filter for alternately charging the sorptive filtering medium, and flushing with steam or other inert gas, means are provided for the additional supply, during the flushing operation, of steam or other inert gas to the conduit which serves during the charging periods for admission of the solventor vapour-laden air to be filtered, whereby formation of an explosive mixture in the conduit and the communicating part of the filter is avoided.  Apparatus for solvent recovery of the type described in Specification 397,128 comprises an annular container b for an adsorbent such as active charcoal, the vapour-laden air entering through conduit i into an annular space a<1>, passing through the adsorbent, and leaving by the central space b<1> and pipe b<2>. During flushing, steam or other inert gas is passed through pipe j and the container b to an outlet such as k or k<1>.  According to the invention the steam is passed into conduit i between two valves l, l<1> shown as sliding disc valves, and thence to the pipe j.  Leakage from the filter through the valves is thus avoided.  One or more small holes l<3> may be provided in the valve l<1> through which steam passes to the space a<1>.  The invention may also be applied to apparatus as described in Specification 415,801.  According to the Provisional Specification steam or inert gas may be admitted at any position where solvent may become mixed with air in the presence of heat.  Thus, where the adsorber comprises a number of small chambers, subsidiary steam inlets for these may be provided.
Patent GB-500987-A (GB)
Title: Improvements in catches for gates, doors and the like
IPC: E05C19/02
Filed: 1937-10-14
Abstract: 500,987. Gate &c. catches. BATES, W. Oct. 14, 1937, No. 27983. [Class 44] A catch for gates, doors, &c. yielding to pressure comprises a cylindrical body 4 rotatably mounted in a bracket 3 and carrying a head 5 with radial arms 10, the part 4 being provided with flats 9 yieldingly engaged by a plunger 2 under the action of a spring 7. The plunger and spring are housed, as shown, in the stem 1 of the bracket and are confined by a screw plug 8 by which the spring pressure may be adjusted. The bracket is shown mounted on the post 13. When the gate &c. 12 is opened or closed a striker member 11 fixed thereon engages with an arm 10, rotating part 4 as it passes the arm, plunger 2 riding from. one flat to the next. Member 11 may be mounted to pass above or below the bracket. A modification is described in which the parts 2, 4, 7 are mounted in a casing, let into the post, the parts 5 10 projecting into an open sided recess which receives the member 11. Any suitable number of arms 10, other than four, as shown, with corresponding flats 9, may be provided.
Patent GB-279499-A (GB)
Title: Improvements in or relating to synchronous amplifying control mechanism
IPC: G05G19/00
Filed: 1926-12-28
Abstract: 279,499. Bethlehem Steel Co., (Assignees of Nieman, H.). Jan. 8, 1926, [Convention date]. Divided on 264,148. Naval and garrison mountings.-A reversible mechanical relay R is shown applied to the elevating gear of a heavy gun 145. The construction of relay is fully described in Specification 264,148, [Class 80 (ii), Gearing, Variable-speed &c.]. A small displacement of the shaft of a suitable electric motor 156 at a control station produces a like displacement in the shaft 153 of a motor 154, which shaft 153 is the control shaft of the relay. The work shaft 151 follows, with power from motor 152.
Patent GB-491053-A (GB)
Title: Improvements in pads having a self-contained supply of polishing agents or the like
IPC: A47L13/19
Filed: 1937-10-15
Abstract: 491,053. Reservoir pads. KINGMAN, R. B. Oct. 15, 1937, No. 28130. [Class 19] In a pad having a self-contained supply of polishing agent expressible through pervious means at at least one side of the pad, a plurality of segregated spaces hold the polishing agent, which is gradually expressed from the spaces by pressure on their walls when the pad is in use. As shown in Fig. 2, a fibrous or felt-like layer 1, of knitted or woven textile material, natural or artificial sponge, or any other soft porous material, is secured at its edges to a backing member 2 formed with portions 5 pressed outwardly and holding masses of reserve wax. The fingers may be placed in the intervening spaces and a loop may extend across the back of the hand. Closely spaced hollow embossed parts may be substituted for the members 5. The wax holding spaces may be formed by a corrugated sheet 11, Fig. 6, secured to a backing sheet 14 of greaseproof material provided with a hand loop 19. Wax discharge perforations 17 are provided, and a sheet 18 of the material known under the Registered Trade Mark " Cellophane " may cover the perforations when the pad is not in use. The wax may be on both sides of the sheet 11, and an additional pervious sheet may be provided between the sheets 11 and 18. To provide additional space for wax, two sheets 11, Fig. 11, may be superposed, perforations 39 in the sheets allowing wax to leave the central compartments. In reversible constructions, a central impervious sheet may have a corrugated sheet on each side, faced with terry cloth or other pile or napped material.
Patent GB-1309974-A (GB)
Title: Coupling for shafts
IPC: F16D3/04
Filed: 1971-06-16
Abstract: 1309974 Shaft couplings PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 16 June 1971 [19 June 1970] 28142/71 Heading F2U An intermediate disc 9 is rotationally fixed but radially movable relative to each of two  shaft mounted parts (5), (7). Fig. 1 (not shown), along a radial direction normal to the direction of radial movement relative to the other part (5), (7), one of the parts (7) having an annular chamber 19 housing a C-shaped spring 21 whose ends 23, 27 engage tangentially of the parts (5), (7) with protrusions 29, 25 from the parts into the chamber, there being a clamping device (e.g. a screw 32 which can approach a stop 33) to clamp the spring 21 to allow the other part (5) and its protrusion to be removed. The parts (5), (7) may each comprise a ring with axially extending pins (11), 15 engaging slots 13, 17 in the disc 9, and a hub (37, 37) extending in the same axial direction as the other hub from the ring. The screw 37 may be replaced with an eccentric boss (34), Fig. 4 (not shown), rotatable about an axis parallel to that of the shafts. The hubs (37), (38) of the parts (5), (7) may be attached to the shafts (1), (3) by screws in radial holes.