baber/WOPTO huggingface dataset:
Patent GB-419719-A (GB)
Title: Improvement in variable-speed gear selecting and shifting mechanism
IPC: B23Q5/14
Filed: 1934-05-31
Abstract: 419,719. Controlling change-speed gearing. JONES & LAMSON MACHINE CO., Springfield, Vermont, U.S.A.-(Assignees of Flanders, R. E.; Springfield, Vermont, U.S.A.) May 31, 1934, No. 16302. Convention date, June 15, 1933. [Class 80 (ii).] Change - speed gearing suitable for driving lathes comprises three shift levers &c. 30, 37, 41, Fig. 1, which are moved simultaneously to proper gear positions by three preselective profile members 80, 81, 82, Fig. 4. The outer levers 30, 41 have two gear positions each, and the inner lever 37 three gear positions, so that the combination yields twelve forward speeds which are selected by turning a hand lever 92, Fig. 8, over a dial 101. The levers 30, 37, 41 are jointed to rockers 50, 51, 52, Fig. 4, which rock on pivots carried transversely on shafts 83, 85, 83<1> in front of the profile selectors 80, 81, 82 which are connected by a flange 115 so as to slide together and by a toothed train 110, 111, 112 so as to turn together. The selector 81 is fast to its shaft 85. The selectors have outwardlydirected segmental profile faces 125 as shown in Figs. 9, 10 and 11. The shaped face of each selector is adapted to coact with a pair of fork arms 126 of the rocker opposite so that in a gear position such as is shown in Fig. 1, the three rockers 50, 51, 52 are held locked so that the levers 30, 37, 41 and the slidable toothed gear clusters are also so held. To change speed, the lever 92 is pulled outwards of Fig. 8 from the dial 101 about a lower fixed pivot 91. This brings the coupled selectors to the position of Fig. 4 clear of the fork arms 126. The lever 92 is then turned sideways of Fig. 8 about the central pivot shaft 85, with which there is a cross pivotal connection 95, and stopped opposite, say, number 57 on the dial 101 which indicates the speed to be imparted to the lathe &c. spindle 5. A blank indication on the right of the dial corresponds to neutral with a stopped driven shaft 5. The segmental faces 125 are now set in different combinations so that the required speed combination is brought into effective locked engagement when the lever 92 is turned back towards the right of Fig. 1 about the pivot 91.
Patent GB-442479-A (GB)
Title: Improvements in or relating to pistons and connecting rods
IPC: F16J1/22
Filed: 1935-06-05
Abstract: 442,479. Pistons; connecting-rods. McCORMACK, R. J., 815, West Breckenridge Avenue, Ferndale, Michigan, U.S.A. June 5, 1935, No. 16328. [Class 122 (i)] The spherical small end E<1> of a connecting-rod is held in a part spherical recess in the piston by a cap D secured by one or more bolts d accessible from the explosion side of the piston. The piston may thus be removed from the cylinder without distributing the rod. Projections e on the rod prevent the detached cap from slipping down the rod. The ball and recess may be lined or coated with bearing metal or the ball may be plated with chromium or other hard metal. The cap is slotted on one side to facilitate removal from the rod.
Patent GB-1063767-A (GB)
Title: Aerating assembly for froth flotation cells
Inventor: DAMAN ARTHUR CHESTER
IPC: B03D1/16
Filed: 1965-04-15
Abstract: 1,063,767. Agitating and aerating liquids; froth flotation apparatus. DENVER EQUIPMENT CO. April 15, 1965, No. 16340/65. Headings B1C and B2H. A froth flotation cell has an impeller 16 rotated by a shaft 14 and surmounted by a fixed shroud 18 having a restricted annular intake opening 18a. A conduit 20 extends into the opening 18a its lower portion 20x defining an annular inlet for gas supplied at 21 under pressure (which must however, be less than the hydrostatic pressure at the opening 18a). Pulp enters through intake openings 19 in conduit 17 in greater volume than can discharge through opening 18a providing a hydrostatic seal equivalent to the full depth of pulp in the cell to prevent gas escape. In modifications the cross section of the opening 18a can be regulated by a vertically adjustable annular wedge, see Fig. 2 (not shown) and the conduit 17 terminates below the surface of the pulp or is dispensed with (see Figs. 3 and 4, not shown).
Patent GB-572975-A (GB)
Title: Improvements in and relating to micrometer gauges
IPC: G01B3/18
Filed: 1943-10-06
Abstract: 572,975. Linear-dimension gauges. SHARDLOW & CO., Ltd., A., and CORBIDGE, V. Oct. 6, 1943, No. 16347. [Class 106 (ii)] The micrometer jaws 8, 10 are mounted on a fixed circular shaft 7 parallel with the micrometer spindle 3 and rigidly secured to the micrometer sleeve by a housing 5. The spindle engages a fork bearing 12 in a rearward lug 11 on the movable jaw, and has a head 13 co-operating with a slot 14 in the lug to transmit longitudinal movement to the jaw. The fork bearing 12 has an adjusting screw 16. A thrust screw 15 controls end play of the head 13.
Patent GB-714164-A (GB)
Title: Improvements in or relating to portable hardness testing instruments
IPC: G01N3/42
Filed: 1951-07-10
Abstract: 714,164. Testing physical qualities of materials. POCKNEE, J. K. July 2, 1952 [July 10, 1951], No. 16362/51. Class 106 (2) In a hardness testing instrument of the kind having an indenting tool 40 passing through an apertured anvil face of the .instrument and loaded through means acting on a substantially incompressible fluid in a fluid chamber 10 connected to a pressure gauge 12, a measuring means 60 actuated by the displacement of the indenting tool is adjustable to zero whilst the indenting load is zero. As shown, movement of the measuring tool 40 is transmitted to a 'clock gauge 60 through a pivoted lever 50. The lever 50 is. pivoted on a rod 53 vertically adjustable through the medium of a screw-jack mechanism 70. Two pivot holes 55, 56 are formed in the lever 50 to give a 1:1 or a 2: 1 ratio of the lever arms 57 to 47. In operation the apparatus is clamped to the specimen 96 under test by a U-shaped clamp 90, A screw-jack 14 is then operated to compress the fluid in the chamber 10 causing the tool 40 to be loaded through a spring 77 between the chamber 10 and the tool 40 and then directly to. the tool 40 when the spring 77 is sufficiently compressed to allow, the mainstem 35 of the indenting tool 40 to be brought into abutting engagement with the lower wall 43 of the chamber 10. At this stage the pressure gauge 12 and the dial gauge 60 are adjusted to zero. A further downward movement' of the tool 40 causes the instruments 12 and 60 to give pressure and displacement readings, from which the hardness of the material under test may be deduced. Specification 712,500 is referred to.
Patent GB-803117-A (GB)
Title: Sewing machine cabinet
IPC: A47B29/00
Filed: 1957-05-23
Abstract: 803,117. Furniture combinations. SINGER MANUFACTURING CO., Ltd. May 23, 1957 [June 19, 1956], No. 16368/57. Class 52(3) A drop-head sewing machine cabinet with a machine storage compartment 18, a drawer compartment 19 and legs 16, 17, has a table top 21 with a thick portion 22 and a thin portion 23 apertured at 24 and a hinged leaf 29 which when folded lies with its surface in the same plane as portion 22, a block 32 being hinged by a piano hinge to compartment 18 to support the leaf 29 in its open position on resilient bumpers or extend the surface 22, 29 in the closed position.
Patent GB-1371751-A (GB)
Title: Gin pole for oil well derrick
IPC: E04H12/34
Filed: 1973-04-05
Abstract: 1371751 Boring earth &c LEE C MOORE CORP 5 April 1973 [11 May 1972] 16395/73 Heading E1F A gin pole for a well drilling derrick comprises a pair of legs 4, means 5 connecting the upper ends of the legs 4 to legs 6, and means 19 at the upper ends of the legs 6 for engaging a mast-raising sling line 16, the upper portions 33, 39 of the legs 6 extending above the connecting means and hinging at 34, 40 to the lower portions 25, 28 of the legs 6 so that the upper portions can be swung down to shorten the legs 6. The mast 3 is raised by hooking the centre of the sling line to the travelling block 13, passing each of the branches of the sling line over sheaves 17, 18, 19 to anchors 20 on the mast, and operating the drawworks 8, the mast be held raised by connecting brackets 26, 27. A locking pin 30 is removed from the legs 6 and the upper portions are swung down. The branches of the sling line are disconnected from the anchors and fixed to the drawworks support 22, the drawworks are operated to raise it and the support on legs 23, and the support is fixed to the mast.
Patent GB-154142-A (GB)
Title: Improvements in or relating to double barreled guns
IPC: F41A9/18
Filed: 1920-06-17
Abstract: 154,142. Thompson, J. T. June 17, 1920. Breech actions, sliding breech-block; protecting from dust and rain.-Consists in an automatic double-barrelled gun having a single breechblock adapted to co-operate with either barrel. In the construction shown, the breech-block 49 is mounted to slide in a rocking cradle 48 mounted to turn about a longitudinal axis to bring the breech-block opposite either barrel. The breech-block is locked to the cradle by a sliding look 66, Fig. 37, engaging inclined slots in the breech-block and cradle and acting on the principle described in Specification 14368/14. The cradle is turned manually by means of a projecting stud 118. The sear 84 is mounted in the cradle and is operated by a slide 93 connected to the trigger. A single tubular magazine 47, concentric with the axis of rotation of the cradle, is provided. The cartridges are fed by a lifter 100 pivoted in the cradle and operated by a spring 99 and by a cam on the breech-block engaging a projection 98 on the lifter. Means is provided for retracting the breech-block by hand to load either or both barrels for the first shot. A pivoted shutter 113, Fig. 17, operated by the cradle is provided for closing the ejection opening 57 corresponding to the barrel not in use. A safety lever 106 for locking the trigger is pivoted to the trigger guard.
Patent GB-1221474-A (GB)
Title: Silver halide photographic materials
Inventor: BACON ROBERT ELWIN
IPC: G03C1/09
Filed: 1968-04-05
Abstract: 1,221,474. Photographic silver halide printout materials. EASTMAN KODAK CO. April 5, 1968 [April 7, 1967], No.16421/68. Heading G2C. Photographic silver halide materials which may be used either as print-out or as developing- out materials, have an emulsion layer in which the silver halide grains contain occluded tetravalent metal ions, such as Os, Ir or Pt ions, the materials also containing in the emulsion or another layer a halogen acceptor, e.g. a hydrazine, thiourea, thiosemicarbazone, urazole, thiourazole, selenourazole, heterocyclic or aromatic mercaptan halogen acceptor. The materials give a print-out image on exposure which may be stabilized by removal of the halogen acceptor by washing, oxidation or heating. Alternatively, after exposure sufficient to give a latent image the materials may be chemically developed and fixed to provide a permanent image.
Patent GB-1452511-A (GB)
Title: Machine tools
IPC: B23Q11/14
Filed: 1973-04-05
Abstract: 1452511 Machine tools ALFRED HERBERTLtd 21 Feb 1974 [5 April 1973] 16462/73 Headings B3L and B3K A machine tool comprises a frame, a cutting tool carrier, a workpiece support, slide 13, and dimensioning means remote from the cutting tool support for determining the dimensions to which a workpiece is machined by a cutting tool on the cutting tool carrier, the remote dimensioning means being provided with a heater, element 21, whereby a temperature rise in the tool carrier can be compensated for by heating the dimensioning means. Slide 13 is moved by cam 15 through follower 16, member 17 and screw and nut adjuster 18. Final dimensions of the workpiece are determined by the position at which slide 13 stops and is determined by a deadstop 20 engageable by member 17. The element 21 is connected to a heater control 22 which may be preset, or sensing elements are associated with the cutter and the dimensioning means which sensors control the output of the heater control 22 to maintain the temperature difference between the sensors to a predetermined limit.
Patent GB-474356-A (GB)
Title: Improvements in and relating to high frequency signal receiving systems
IPC: H03G11/04
Filed: 1937-06-14
Abstract: 474,356. Wireless receiving circuits. BRITISH THOMSON-HOUSTON CO., Ltd. June 14, 1937, No. 16464. Convention date, June 13, 1936. [Class 40 (v)] In a high-frequency signal receiver the detector load is associated with a valve, which may be a diode, so that static impulses are not passed to the audio frequency channel of the receiver. Fig. 1 shows a diode 1 with a load resistance 2, 3 and an auxiliary diode 8 which becomes conductive on the application of a short impulse as the cathode is held at fixed potential with respect to earth by the condenser 10. The audio frequency output is taken from the resistance 3 The cathode of the signal diode may be arranged at earth potential by interchanging resistance 9 and condenser 10 and reversing the connection of the diode 8. Fig. 3 shows an arrangement using a single load resistance 11 in which the whole voltage across the load is used to bias the diode and the whole of the instantaneous voltage is applied to the diode. Fig. 4 shows the invention applied to a full wave detecting system with automatic volume control voltages derived from resistances 22, 23 and applied to the preceding stages over a filter 34, 35 and to the following audio amplifier valve 30. The detecting system in addition provides automatic frequency control voltages, the voltage of primary 13 of the transformer being applied to the mid-point of the secondary 14 so that voltage across resistances 22, 23 is balanced by that across resistance 24 only when the primary voltage is 90‹ phase displaced with regard to the secondary voltage. Fig. 5 shows the static eliminating diode 39 normally conducting and in series with the output resistance 38. The cathode of the diode detector may be earthed by modifying the circuit and reversing the connection of the diode 39, Fig. 6 (not shown). Fig. 7 shows a triode 48 which may be gas-filled for suppressing static in which adjustment of the bias tapping 50 enables static to be suppressed in excess of a predetermined percentage modulation of signal.
Patent GB-375970-A (GB)
Title: Improvement in sound amplifier
IPC: G10K11/02
Filed: 1931-06-05
Abstract: 375,970. Horns. ABRAHAMS, A. I., 18, Washington Place, New York, U.S.A. June 5, 1931, No. 16474. Convention date, Nov. 17, 1930. [Class 13.] In an acoustic horn made from a layer or layers 1, 2 of non- metallic material, such as cloth or paper impregnated or coated with, e.g. lacquer to render it waterproof, the shape of the horn is maintained by transversely continuous metal sections longitudinally spaced from each other. In one form, three metal sections 3, 3a, 3b are inserted between the layers 1, 2. The outer end of the horn is bound by a metal ring 1, and one or more external rings 5 are provided to bridge the space between the metal sections. The metal sections may be placed on the inner or outer surface of the non- metallic material and may be made of zinc, aluminium or steel. The non-metallic material may be of the kind disclosed in Specification 233,905. [Class 13, Bells &c.].
Patent GB-935146-A (GB)
Title: Garment pressing apparatus
Inventor: MUTOLESE MICHAEL
IPC: D06F71/30
Filed: 1962-04-30
Abstract: 935,146. Ironing presses. JOHN G. WEINGARTEN Inc. April 30, 1962, No. 16499/62. Class 138 (2). A buck 12 for underpressing the arm-hole seam of a garment, has a front portion substantially symmetrical about a plane normal to a front face 34, and has curved sides 46, 48 tapering continuously from the arcuate side edges 40, 42 of the face 34 to the widest part 38 of the buck 12, which is adjacent to the face 34. The arcuate upper edge 44 of the front face 34 has a radius of curvature greater than that of the side edges 40, 42. The upper surface of the (steam-heated) buck 12 has holes 32 communicating with a vacuum chamber for extracting moisture from the garment. The press head engages the part of the buck 12 between the widest part 38 and the front face 34, in an arc of less than 90 degrees to avoid pinching.
Patent GB-1407937-A (GB)
Title: Therapeutic compositions comprising benzoyl peroxide
IPC: A61K33/40
Filed: 1974-04-16
Abstract: 1407937 Anti-acne medicaments STIEFEL LABORATORIES INC 16 April 1974 [16 April 1973] 16552/74 Heading A5B A composition for treating acne and seborrhea comprises from 1 to 30% by weight of benzoyl peroxide having a particle size below 100 microns in a single phase base comprising water, 10 to 80% of a C 1-3  alkanol and 1-30% of a non-ionic surfactant which is soluble in the vehicle. Suspending agents and viscosity builders of known types may also be present. Suitable surfactants are polyoxyethylene esters and ethers and polyoxyethylenepolyoxypropylene polymers.
Patent GB-1475841-A (GB)
Title: Electronic timepiece
IPC: G01R19/165
Filed: 1975-04-22
Abstract: 1475841 Electronic timepieces SUWA SEIKOSHA KK 22 April 1975 [24 April 1974 15 July 1974] 16589/75 Heading G3T A battery powered electronic timepiece has a battery voltage detector circuit including a fieldeffect transistor and at least one resistor for detecting when the voltage falls below a predetermined value. The detector circuit output may cause a display part to flash or a seconds hand to move two steps once every two seconds instead of one step each second, when the said voltage is below the predetermined value. The voltage may be detected periodically e.g. once per second, in between the steps of seconds hand advancement or once per day the result being memorized so that when there is a voltage decrease from one day to the next an indication is given. In Fig. 3 a field-effect transistor 12, which may be part of an integrated circuit chip including other circuitry, acts as a detector becoming non- conductive when the battery voltage E falls below the predetermined value, the detecting level being determined by a drain load resistor 14. The potential threshold of an inverter comprising transistors 15 is set so that its output level switches from low to high when the transistor 12 becomes non-conductive. In an alternative embodiment Fig. 6 (not shown) a potential divider (18) connected to the gate of an FET 12 determines the detecting level. Figs. 7, 8 (not shown) illustrate further alternatives. In a timepiece, Fig. 10, a crystal controlled oscillator 230 is followed by a frequency divider chain of master/slave MOS flip-flops 209-219 connected via NAND gate 226, flip-flop 223, inverters 234, 235 and NOR gates 227, 228 to drive a stepping motor 239 which drives a seconds hand. A flip-flop 220 and NAND gate 224 constitute a control circuit for a battery voltage detector comprising transistors 202, 205, load resistors 204, 206 and inverter 232. A flip-flop 221 memorizes the detector output. A flip-flop 222, NAND gates 225, 226 and Ex-OR gate 229 constitute a battery condition display circuit. The output of NAND gate 224 is "low" once every 2 seconds for a period of 7À8m seconds, and is "high" at other times. When it is low the transistor 202 is conductive for 7À8m seconds every 2 seconds, if the battery voltage is higher than the predetermined level. Consequently the output of inverter 232 to memory FF221 is "high"; and vice versa when the battery voltage is low. Thus when the battery voltage is above the predetermined value the seconds hand is moved one step each second. Depending upon the state of the memory circuit FF221, the motor drive circuit is so controlled by the battery condition display control circuit that the seconds hand is indexed every two seconds by two steps.
Patent GB-1186725-A (GB)
Title: Valve Actuating Mechanism
Inventor: YEO ROBERT H
IPC: F16K31/00
Filed: 1967-04-11
Abstract: 1,186,725. Valves. MAXON PREMIX BURNER CO. Inc. 11 April, 1967 [11 July, 1966], No. 16629/67. Heading F2V. A mechanism 10 for manually, or in the case of an emergency, for automatically actuating a slide valve 20, includes a valve operating rod 50 which is biased upwardly by a spring 58 and subjected to an opposing force by means of a cam 40 acting on a cam follower 130 which is disposed between two plates 120 pivotally connected at A to an arm 60, one end 64 of the arm being pivotally connected to the rod, and the other end carrying a roller 66 which rests on a stool 72, the latter being held in the position shown by an activated electromagnet 100. Manual or mechanical rotation of the cam-shaft 110, in the direction shown by the dotted arrow, causes the cam follower 130 to engage a fall segment "f" in the cam and so permits the arm 60, and hence the rod 50, to move upwardly, the roller 66 acting as a fulcrum about which this motion, which closes the valve, takes place. Opening of the valve is effected by further rotation of the cam, in the same direction, until its rise segment " r " once more engages the follower 130. In the event of an emergency, which would result in the magnet being deenergized, the stool 70 is caused to move anticlockwise, so permitting the arm 60 to rotate, about point A, in an anticlockwise direction which results in the valve rapidly closing. Resetting of the mechanism, after such emergency actuation, is effected by re-energization of the magnet 100, which rigidly maintains the stool 70 in its upright position, subsequent to suitable operation of the cam which permits the arm 60, as a result of the biasing of a spring 68, to attain its upright position shown, the cam then being moved to the position shown in order to open the valve.
Patent GB-497396-A (GB)
Title: Improvements in and relating to electrical signalling apparatus
IPC: H04Q1/446
Filed: 1937-06-16
Abstract: 497,396. Automatic volume control. HADFIELD, B. M. June 16, 1937, Nos. 16727 and 19627. [Class 40 (iv)] [Also in Group XL] In an alternating current signal receiver in which a relay in the output circuit of a gas-filled valve is triggered and detriggered in response to signals applied to one electrode of the valve, the signals on this electrode are maintained at a substantially constant level by means of a device which responds in accordance with the current in the output circuit. To assist detriggering the relay in the output circuit is a low resistance relay and is bridged by a condenser which has such a capacity that the anode circuit has a time constant substantially equal to one period of the input signal. Alternatively a tuned circuit in the cathode lead may be provided. If the valve is a triode the device is a rectifier R connected to damp the input circuit, the rectifier R being connected between the grid circuit and a resistance r in the anode circuit as shown in Fig. 5 or between the grid and cathode circuits as shown in Fig. 2. If the valve is a diode, the rectifier is bridged across the circuit as indicated in Fig. 4. The condenser tuning the anode circuit may be connected across the relay R1 as C1 in Fig. 5, or across the whole anode circuit. A further method to assist detriggering is to provide in the cathode lead a circuit C1, RD, Fig. 6, tuned to twice the signal frequency or to provide resistance RD and the condenser C2 connected as indicated. A circuit having valves in push pull and a non-polarized relay having windings in the anode circuits of both valves also is described. Specification 485,006 is referred to.
Patent GB-783320-A (GB)
Title: Improvements in and relating to electric accumulator cells
IPC: H01M10/08
Filed: 1955-06-10
Abstract: 783,320. Batteries. AKTIEBOLAGET TUDOR. June 10, 1955 [June 11, 1954], No. 16757/55. Class 53. A lead-acid accumulator has a fluorinated wetting agent introduced into the active material, the said wetting agent being soluble in the electrolyte. The wetting agent may be introduced into the active material during the formation of the latter in the electrolyte in which the wetting agent has been dissolved. The Specification gives various fluorinated compounds, e.g. C 5 H 11 , COO.C 2 H,SO 3 M; C 8 F 17  SO 3 M; C 8 F 15 SO 3 M, where M is a cation, e.g. hydrogen, ammonium, &c., or other cation which does not interfere with the desired solubility of the compound. The Figure shows the charging P.D.s of two accumulators in which only one has a fluorinated wetting agent.