baber/WOPTO huggingface dataset:
Patent DE-2632880-A1 (DE)
Title: Liner for gating system of moulds - is prepared from an expanded inorganic filler an organic binder and a light wt. fireclay
IPC: B22D7/10
Filed: 1976-07-21
Abstract: The solidification of iron and steel castings is controlled by using a liner for the gating system of moulds or the hood of ingot heads, which is composed of expanded granular perlite of 4 kp/cm2 bulk compressive strength and contg. 1.5 wt. % alkali metal and/or a granular light weight fireclay, the latter having a density of 0.4-0.7 g/cm3, ta >1400 degrees C (in which ta is the initial temp. at which the sample is compressed by 0.3 mm from max. expansion, and te is the temp. at which the sample is compressed by 10 mm from max. expansion). Preferred compsn. of liner is 5-20 wt. % (or 2-10 wt. %) organic fibres, 5-20 wt. % (or 3-15 wt. %) mineral fibres; 2-10 wt. % starch; 3-15 wt. % urea or phenolformaldehyde resin as binder and balance expanded granular perlite having a bulk compressive strength of 4 kp/cm2 and 1.5 wt. % alkali content and/or granules of a light wt. fireclay of 0.4-0.7 g/cm3 density and ta >1250 degrees C, te >1400 degrees C.
Patent DE-2641479-A1 (DE)
Title: Refuse truck with pre-sorter - uses engine waste heat for drying wet refuse prior to sorting inside truck
Inventor: WAGNER GEB RAVE ANNEMARIE
IPC: B03B9/06
Filed: 1976-09-15
Abstract: The plant serves for preliminary sorting of collected refuse into organic and non organic parts inside the refuse collecting truck. The refuse is fed into the plant through hopper assembly (3) and lifted to the forechamber (2) in which a set of rollers operate in form of crusher and pressing unit (4) consisting of rollers (4) and (5) rotating at different speeds. The forechamber (2) contains the discharge ends of hot gas pipes (7) the outlet of the hot gases being directed in direction of the crushed refuse leaving the rollers. The hot gases dry and crumple the organic part of the refuse and facilitate its separation from the non organic part. The gases leave the for chamber via exhaust (8) into the chamber (1) containing conveyer belt (11) where further drying process of the refuse takes place. Simultaneously hot gases are admitted from below through pipe (10). The pre-dried refuse drops from the belt (11) onto a swinging screen (14) where the final sorting takes place.
Patent DE-2641679-A1 (DE)
Title: IC engine plastic air filter - has lid with inner annular shoulder to prevent possible moulding burr from contacting lid
Inventor: ALF HERBERT
IPC: F02M35/02
Filed: 1976-09-16
Abstract: The air filter consists of an induction pipe (2) joining into a two part housing (3). The two part housing has a pot shaped lower section (4) with a clean air outlet and a lid which fastens onto the lower part rim. The filter housing is of flexible plastic and contains a disposable paper cartridge filter as in 2630875. The lower part rim has a number of equally spaced arresting cams (11) which extend radially outwards and each have two side supports. The lid (7) has an annular casing (22) which grips over the lower part rim (5). The casing has a number of apertures (24) corresponding to the projecting cams (11). An annular collar (35) is concentric to the casing (22) to form an annular groove (36) with a projecting shoulder (38). The lower section rim (5) rests against the shoulder and extends radially outwards. The measurement is such that any possible mould overflow does not contact the filter lid.
Patent DE-2652491-A1 (DE)
Title: Heat engine cycle for power station - has steam cycle refrigerant cycle and heat pump operated in cascade
Inventor: SCHMIDT PETER
IPC: F01K17/00
Filed: 1976-11-18
Abstract: Steam generated in a boiler passes through superheaters to two double acting steam engines which drive an electrical generator. The exhaust is condensed in a condenser and returned to the boiler through feed water heaters. The heat given up in the condenser is used to evaporate a refrigerant which passes through superheaters to two double acting vapour engines which drive a second electrical generator. The exhaust from these engines is condensed and returned to be evaporated in the steam condenser. The heat given out in the refrigerant condenser is used as the source for a heat pump.
Patent DE-2654329-A1 (DE)
Title: Echo suppressor for speech circuit in four-wire transmission system - has speech level storage device operating when both subscribers talk at same time
Inventor: PIERREL HANS-JOACHIM ING GRAD
IPC: H04B3/20
Filed: 1976-11-30
Abstract: The echo suppressor has a blocking element in the transmission circuit, controlled by speech detectors in the transmission and reception circuits in accordance with speech level ratios. The evaluation of this ratio is done by the speech detectors and one or several control devices. When attenuation between receiving and sending circuits rises from the beginning of the connection and during sending circuit blocking period by the blocking element, speech level in the sending circuit is continuously higher evaluated in comparison with that in the receiving circuit. At least one control element is controlled by a control device storing the speech levels. Speech level is stored in the storing control device only when the near end and far end subscribers speak at the same time.
Patent DE-2657403-A1 (DE)
Title: Cyclic fluidised cracking process - using zeolite catalyst with metal component, giving reduced emission of harmful gases (NL 21.6.77)
Inventor: VASALOS IACOVOS ANTONIOS
IPC: C10G11/00
Filed: 1976-12-17
Abstract: Cyclic fluidised cracking process for S-contg. oils, in which (a) cracking is at 454-649 degrees C using a catalyst contg. (1) a molecular sieve and/or amorphous carrier and (2) a metal component of Na, Sc, Ti, Fe, Cr, Mo, Mn, Co, Ni, Sb, Cu, Zn, Cd, rare earth metal or Pb, or a cpd. of these, in amount sufficient to absorb at least 50% of the sulphur oxides formed in the regenerator; (b) the deactivated catalyst is stripped at 454-649 degrees C using a gas contg. steam in wt. ratio to (1) of 0.0005-0.025:1; (c) the stripped catalyst is regenerated at 566-788 degrees C; (d) >=50% of the sulphur oxides is absorbed by the catalyst, (e) the catalyst is recycled to the reactor; (f) a waste gas stream is drawn off from the regenerator contg. O2 and a low concn. of sulphur oxides; and (g) most of the absorbed SO2 is drawn off from the reactor and/or stripper as S-contg. gas e.g. H2S. Emission of sulphur oxides is reduced, together with amount of CO in the exhaust gas from regenerator, which causes after-burning in the pipes, etc. Regenerated catalyst with reduced coke content and higher activity and selectivity is obtained. Exhaust gas contains 0.2% vol. CO and can be discharged directly to the atmos.
Patent DE-2709491-A1 (DE)
Title: Amide gp.-contg. biuret poly:isocyanate(s) - prepd. by reacting di:isocyanate(s) with di:amino polyamide(s), and having good storage stability
Inventor: BUYSCH HANS-JOSEF DR
IPC: C08G18/78
Filed: 1977-03-04
Abstract: Novel amide gp. contg. biuret polyisocyanates opt. as mixts. of homologues are of formula (I): (where R1 is divalent 6-17C (cyclo)aliphatic or aromatic hydrocarbon or xylylene; R2 is 1-12C divalent aliphatic hydrocarbon; R3 is divalent 1-17c (cyclo)aliphatic hydrocarbon and m = 0-2; and the two m's total 1-2). (I) have improved stability and may be transported without formation of toxic diisocyanates, (I) may be used to prepare polyurethanes.
Patent DE-2713032-A1 (DE)
Title: Two part telescopic metal ladder - has locking release components accommodated inside uprights of upper section
Inventor: ZEYHER ROLF
IPC: E06C1/12
Filed: 1977-03-24
Abstract: The adjustable metal ladder has two sections, a rung of the lower section supporting the upper section by sprung pivoted levers mounted in recesses in the uprights of the upper ladder section. The supporting levers (9), release levers (21) and spring (17) are accommodated within the upper uprights. When loaded, the projecting portion (11) of the supporting lever (9) rests on a rung of the lower ladder section. The outer end (14) of the lever bears against the inside (15) of the ladder upright. To retract the ladder, the upper section is lifted, causing a rung of the lower section to press the release lever (21) downwards and then release it.
Patent DE-2713938-A1 (DE)
Inventor: WINTER RUDOLF
IPC: H04Q3/00
Filed: 1977-03-29
Abstract: This telephone exchange system with STD and alternative routeing has a line network constructed in several network levels which overlay each other. The line network is in the form of a star network with a partly overlaid mesh network, and there are local exchanges at its nodes. Line sets (L1, L2), devices which are common to them (R1, R2), for recognition of local connections, and group selectors (xGW) (which are assigned individually to these line sets (L1, L2)) of a second group selection stage which is provided for local traffic only, are inserted into the lines which lead from the zero decade of the first group selector (I, GW) of a local exchange to the counting pulse generator (ZIG) of the higher-level nodal exchange (245). The trunk dialling devices (245) are bypassed, and local exchanges (A, D) in the local area are reached directly via the outputs of this second group selection stage (xGW). For setting up local connections, the common devices (R1, R2) translate the area code into control information for the selectors (xGW) of this second group selection stage. <IMAGE>
Patent DE-2716454-A1 (DE)
Title: Cement calcining plant using precalcining chamber - for which pipe carries charge directly to drum furnace during start up
IPC: C04B7/43
Filed: 1977-04-14
Abstract: Plant for heat treating fine materials, esp. for mfg. cement, using a multicyclone preheater; a precalcining chamber fed with fuel and air from the clinker cooler; and a rotary drum furnace. The exhaust gas ducts from both the drum furnace and the precalcining chamber lead to the lowest preheater cyclone, from which the charge travels via a pipe to the drum furnace; whereas the charge leaving the second lowest cyclone flows into the precalcining chamber. A pipe leads directly from the precalcining chamber to the drum furnace, and is used to carry the charge during start up of the plant or in the event of breakdowns. The precalcining chamber pref. has the shape of a cyclone with a tangential inlet for air flowing from the cooler, and an upper fuel inlet. Formation of undesirable deposits baking onto the walls of the precalcining chamber during start-up or breakdowns is obviated.
Patent DE-2717286-A1 (DE)
Title: Multi-layer circuit board prodn. - involves heating boards with adhesive foils and degassing at low pressure before compressing
Inventor: ABELE WALTER
IPC: B29C43/56
Filed: 1977-04-19
Abstract: A number of copper coated and etched basic layers are assembled into a compressed packet with interposition of adhesive foils. The packet is heated and compressed, so that viscous resin of the adhesive foils completely glues together the basic layers. When the packet (20) is assembled, basic layers (2) are placed above each other at a small distance from the adhesive foil, so that air channels are left behind them. This packet is then heated in a laminating press at reduced air pressure, but without application of pressure, until the resin is softened to a plastic state. Evolved gases are removed, and the pressure is applied only at the end of this degassing process, with heating maintained.
Patent DE-2718160-A1 (DE)
Title: Epitaxial magnetic films thickness measurement - using ferrimagnetic resonance initiated by FM signal applied by circulator
Inventor: DOETSCH HORST DIPL PHYS DR
IPC: G01B7/06
Filed: 1977-04-23
Abstract: An arrangement measures the thickness of magnetic, epitaxially deposited layers of substances such as yttrium iron garnet or substituted yttrium iron garnet used in magnetic bubble memories. It is based on ferrimagnetic resonance. The signal from a wobbulator (11) is fed to a first planar conductor (12) which is etched in a metal layer (13) deposited on a substrate. A short circuit (14) exists at the end of the conductor and is positioned adjacent a strip conductor (15). A tapered structure (16) acts as a broad band transformer to a second planar conductor (17) which leads to a receiver. The device is located in a holder (19). The ferrimagnetic resonance of the specimen is measured in the region of the short circuit.
Patent DE-2720621-A1 (DE)
Title: Frame for automatically washing laboratory glassware, esp. pipettes - aligns securely held tubes on belt to water jets
Inventor: HUBER WINFRIED DIPL ING
IPC: B01L99/00
Filed: 1977-05-07
Abstract: A frame by means of which tubes of small dia. used in a laboratory, esp. pipettes, can be handled easily in an automatic washing machine with a reciprocating belt and jets projected vertically, eliminates both the awkward positioning of the glass tubes on pressure connections, and the protracted dwell necessary in other machines. The frame into which the pipettes are placed immediately after use, aligns them vertically and parallel to each other in two rows. It consists of a front and rear cheek, between which, at top and bottom there are supports of a synthetic material proof against heat and fluid chemicals. The bottom support has the form of a gutter with steep sides running into a slit smaller in diameter than the smallest tube. The slit opens out again in an inverted "V" with sides giving access to the jets of water. The top support is formed by two side blocks aligned by bolts and a row of centre blocks consisting of lower and upper clamps. Under the action of an eccentric shaft of stainless steel these compress a cushion which aligns each row of pipettes in planes.
Patent DE-2725141-A1 (DE)
Title: Mechanical appts. to balance propeller - has ball bearing surface and spirit level cemented to holder to indicate unbalance
Inventor: BOEHLER GEB LAEUBIN INGEBORG
IPC: G01M1/12
Filed: 1977-06-03
Abstract: A shaft (6) is firmly fixed to a base plate (5). The upper end of the shaft, which may be hardened, is ground flat. A propeller (3) to be balanced is attached to a holder body (2) by means of a nut (4), which is preferably a knurled or similar nut which can be released without tools. A ball (7) is positioned precisely in the centre of the axis. A spirit level (1) is cemented to the holder body (2) exactly parallel to the bearing surface. The propeller or other object to be balanced is set gently in-rotating and oscillatory motion on the bearing ball. When it comes to rest, the position of the heaviest portion is indicated by the air bubble of the spirit level.
Patent DE-2727111-A1 (DE)
Title: Formation of coloured coating on zinc (alloys) - by treating with water vapour at a defined pressure and temperature
Inventor: PELZEL ERICH DR MONT
IPC: C23C8/16
Filed: 1977-06-16
Abstract: Zn and Zn alloys are given a coloured coating by exposing the Zn or Zn alloy article to an atmos. contg. steam or water vapour at a pressure of 0.1-40 atm. and temp. 105-250 degrees C, which produces a Zn oxide and Zn hydroxide layer. The Zn and Zn alloy substrate is coated by treating with steam or water vapour and a portion of the water vapour may be replaced by CO2 whereby a Zn hydrocarbonate coating is formed. Oxidising substances are pref. added such as NO2, HNO3 or H2O2, which accelerate oxidn. of the surface. Method is economical as a pretreatment of the substrate is not required. Grease, oil or emulsions present on rolled sheet need not be removed prior to coating and castings exhibit a greater dimensional stability.
Patent DE-2730504-A1 (DE)
Title: Control circuit for electric motor of dental drill - uses semiconductors to produce three=phase current from DC source
Inventor: GREENWELL JACK EVERETT
IPC: A61C1/06
Filed: 1977-07-06
Abstract: The dental drill is driven by a three phase stator wound electric motor. The motor operates on a dc supply with an inverter consisting of several semi-conductors connected to certain of the motor phase windings and to a frequency variable signal pulse generator by a switching circuit. This circuit enables one pair of semi-conductors to be blocked whilst another pair becomes conducting. This in turn supplies a three-phase current to the motor to allow it to rotate in one direction at a speed proportional to the frequency of the signal pulse. A voltage regulator is also connected to the circuit and enables the dc voltage across the motor to be varied over a pre-determined range depending on the frequency of the signal pulse. The max. turning moment is obtained at the relatively low speed of 5000 r.p.m.
Patent DE-2745136-A1 (DE)
Title: Diving system for use on ship - has chamber pulled into shaft through bottom of hull to mate with decompression chamber inlet
Inventor: ELSNER WOLFGANG DIPL ING
IPC: B63C11/34
Filed: 1977-10-07
Abstract: The diving chamber is raised through a well in the middle of the vessel to mate with decompression chambers inside the hull. The seal between the chamber and the decompression chambers is above the water level in the well. The retracted chamber enables a smooth hull shape to be obtained. No complex hoists are required to swing the diving chamber over the side of the vessel, while the above water seal is not subjected to corrosion.
Patent DE-2754978-A1 (DE)
Title: Wheelchair footrest adjusting mechanism - has rotary drive with self locking system and handle locked in non-operating position
Inventor: KUNZE KARL-HEINZ
IPC: A61G5/12
Filed: 1977-12-09
Abstract: The adjusting mechanism for the footrest on an invalid chair includes a vertical drive shaft (18) with an operating handle (15) at the top which is rotated about the axis of the shaft. This drive is self-locking, and the handle can be locked in a suitable position. This drive shaft operates a slider (49) connected to a lever system (52 etc) to raise the footrest supporting arm (61). The top of this shaft is connected by an extension (25) to the handle, which can slide axially for the locking action. Incorporated with this extension is a locking panel arrangement (29, 31) for securing the handle (15) in its stowed position out of use.
Patent DE-2755556-A1 (DE)
Title: Digital device contactlessly measuring short distances - has ultrasonic transmitter receiver, propagation time measuring unit and timer starting receiver after transmitter pulse
Inventor: HAFFER DIETER DIPL ING DR ING
IPC: G01S15/74
Filed: 1977-12-13
Abstract: The measurements are in the range of a measuring tape. The device is a portable, pocket size unit. The case holds an ultra or hypersonic sound transmitter and a receiver and a propagation time measuring device, started by the transmitter and stopped by the receiver. A multidigit display unit is allocated to it. The transmitter sends a short pulse, and the receiver has an amplifier stopping the propagation time measuring device. A timer controls the delay after which the receiver reaches its full sensitivity after transmission of the sender pulse.
Patent DE-2759273-A1 (DE)
Title: Calculation of natural logarithms for pocket calculators - has modified Euler power series with addition process controlled by central stage
Inventor: SCHULZ EMIL
IPC: G06F7/556
Filed: 1977-12-28
Abstract: The generation of natural logarithms using a digital process and for use in pocket calculators is provided by a modified form of Euler's series to minimise computational time. The Euler power series is executed using an addition (12, 15) process controlled by a central stage. The result of the evaluated expotential ex is then used in an additional stage for the generation of the natural logarithm. The process speed is enhanced by executing a comparison to check if 'x' is greater or less then 1, and then using the result to determine a correction.
Patent DE-2806625-A1 (DE)
Title: Recording system for sound and speech audiogram - records crossing point of frequency and loudness adjustment sliders moved by patient in response to signals
Inventor: WOERNER KLAUS
IPC: A61B5/12
Filed: 1978-02-16
Abstract: The recording system is used for sound or speed audiometers. The combined meter is used for studying the hearing ability of the patient. The recording is made by a light spot on a diagram card placed on a slide. This graphical representation shows the acuity of hearing of the signal generated whose strength is varied. A point is recorded at the boundary of the hearing ability. the loudspeaker output is increased, at given measuring frequency, until the patient hears the sound and presses the button. A mark is made on the recording sheet where the frequency and loudness sliders cross.
Patent DE-2813110-A1 (DE)
Title: Drive circuit for motor in hand-held power tool - has extra capacitor in parallel with field coil for simple RF noise suppression
Inventor: SCHULZ MANFRED DIPL ING
IPC: H04B15/02
Filed: 1978-03-25
Abstract: The drive circuit has a noise suppression circuit to suppress r.f. noise. The suppression circuit contains an X-capacitor in parallel with the motor's armature, and a Y-capacitor between the mains conductor and the field iron. An additional suppression capacitor (7) is located in parallel with the field core (5). This additional capacitor is connected at one end to the main conductor (1) between the switch (4) and the field core (5) and at the other end between the armature (3) and the field coil.
Patent DE-2817718-A1 (DE)
Title: Metal annealing box - with cover secured in flange groove and u=shaped lugs around pillar heads
Inventor: KLEFISCH RUDOLF
IPC: C21D9/00
Filed: 1978-04-22
Abstract: An annealing box has walls which are reinforced by vertical external pillars and by a peripheral rim. The face of the rim carries a groove in which the protruding edge of the cover fits with a certain clearance. Parallel lugs on the cover outside fit also around thickened top parts of the pillars to help locate the cover. A short strap is welded to the lugs, after the box has been filled, to convert all lugs to a U-shape so that the cover is held captive. This locates the cover and prevents the pillars from breakage, yet it allows full freedom of elongation in case of uneven temp. rises.
Patent DE-2826368-A1 (DE)
Title: Coke oven door frame cleaning machine - mechanically guided in position and electrohydraulically controlled
IPC: C10B43/04
Filed: 1978-06-16
Abstract: Cleaning machine for the doors and frames of coke oven chambers is attached to the coke guide and to the coke pusher. Horizontal and vertical power cylinders control its movements and the correct positioning is effected by a mechanical guide system. A proximity switch actuates the cleaning mechanism when the correct position has been reached. System saves one operator and completes the operation automatically with due regard for functional reliability and heat resistance.
Patent DE-2830220-A1 (DE)
Title: Tandem master cylinder with brake force regulator - has regulator valve kept open in event of front axle brake failure
Inventor: LUEPERTZ HANS-HENNING DIPL ING
IPC: B60T17/18
Filed: 1978-07-10
Abstract: A pressure chamber is bounded by one end of a pressure piston and is coupled to a front-axle brake circuit in use of the master cylinder. A second pressure chamber is connected to a regulator input of the regulator, the regulator being adjacent the other boundary of the first pressure chamber. A regulator output is coupled to a rear-axle brake circuit in use of the master cylinder. At least one stepped piston is loaded by a control spring, a regulator valve. An extension of the first pressure piston and the regulator valve mechanically actuate the regulator valve by the first pressure piston to maintain the regulator valve open upon failure of the front-axle brake circuit.