专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

CA437817A TEMPERATURE INDICATOR 未知
公开(公告)号：CA437817A
公开(公告)日：1946-11-05
申请号：CA437817D
申请人： REPUBLIC FLOW METERS CO
发明人： TORNQUIST EARL L , GUYOT WILLIAM S

2. 发明专利

CA395754A RECORDING INSTRUMENT 未知
公开(公告)号：CA395754A
公开(公告)日：1941-04-08
申请号：CA395754D
申请人： REPUBLIC FLOW METERS CO
发明人： LINDEMANN GEORGE E

3. 发明专利

CA361862A FLOW METER 未知
公开(公告)号：CA361862A
公开(公告)日：1936-11-17
申请号：CA361862D
申请人： REPUBLIC FLOW METERS CO
发明人： HANDWERK OTTO T , SPITZGLASS ALBERT F

4. 发明专利

DE523152C 未知
公开(公告)号：DE523152C
公开(公告)日：1931-04-20
申请号：DER0071402
申请日：1927-06-08
申请人： REPUBLIC FLOW METERS CO
IPC分类号： G01D1/02

5. 发明专利

GB304947A Improvements in electrical signalling means 未知
公开(公告)号：GB304947A
公开(公告)日：1929-01-31
申请号：GB825728
申请日：1928-03-19
申请人： REPUBLIC FLOW METERS CO
摘要： 304,947. Electroflo Meters Co., Ltd., (Republic Flow Meters Co.). March 19, 1928. Tell-tale apparatus.-In an electric signalling system wherein indications are given of the position of an index or member operated according to the variations of a chemical or physical quantity by variation of resistance, a movable contact arm is periodically released from contact - with the resistance to allow it to swing freely into engagement with or under the control of the member. As shown in Fig. 1, the apparatus is applied to a gas analyzer wherein a bell 1 is raised to a height dependent upon the residual volume of a measured volume of gas. The bell carries a rod 4 provided with a helix 5 which co-operates with a slot in a toothed wheel 6 to convert the reciprocatory motion of the bell into a rotary motion. The rod 4 has an arm 9 which is adapted to co-operate with a pin 10 mounted on the pivoted contact arm 11 of a resistance 18 which is connected in circuit with indicating, recording or integrating instruments. The contact arm 11 has a spring brush 20 which is adapted to be moved into or out from engagement with the resistance by a pivoted bar 21 which is periodically raised by an arm 3. In operation when the bar 21 is raised the contact arm is allowed to swing freely into a position determined by the arm 9, and when the bar 21 is again lowered a resistance is included in the circuit which is dependent upon the height of the bell 1. If at the instant of measuring the arm 9 is not in engagement with the pin 10 the arm 11 is moved under spring control but if engagement has already occurred further movement of the bell 1 and arm 9 is permitted upon release of the arm 11 if the measuring movement of the bell is not complete. The rod 3 is periodically operated by auxiliary means associated with the gas analyzer and operates the bar 21 through the intermediary of an adjustable pin 23 and an interposed pivoted lever 24 which carries a mercury switch 26 adapted to break the circuit of the resistance 18 before release of the contact arm 11 and to again establish the circuit after the brush 20 is re-engaged. Zero adjustment of the arm 9 is effected by means of the pinion 7. The indicating instrument may be of the type described in Specification 272,594, [Class 37, Electricity, Measuring &c.], wherein the indicating pointer is operated by voltage and current coils both of which are controlled by the switch 26, and the moving system is so balanced that when the instrument is disconnected the pointer remains in its indicating position

6. 发明专利

GB288510A Improvements in or relating to gas analysis apparatus 未知
公开(公告)号：GB288510A
公开(公告)日：1928-04-12
申请号：GB3272127
申请日：1927-12-05
申请人： REPUBLIC FLOW METERS CO
IPC分类号： G01N7/04
摘要： 288,510. Electroflo Meters Co., Ltd., (Republic Flow Meters Co.). Dec. 5, 1927. Gas analysis. - A gas analysis apparatus comprises a burette 14 communicating at its upper end with the source of gas 43 and with an absorbing apparatus 26, and at its lower end with a jacket 15 which surrounds the burette and communicates at its upper end with the atmaspherei and at its lower end with a flexible tube 36 and bulb 38. A liquid seal 25 and an aspirator bulb 41 are provided between the burette and the source of gas. The absorbing device may comprise a bell 26 optionally filled with steel wool or the like, open at the bottom and immersed in a vessel containing a solution which absorbs the constituent to be estimated. In using the apparatus the bulb 38 is filled with water. The bulb 41 is operated to force gas through the apparatus till the air is displaced and the bulb 38 is then squeezed causing the water to rise in the burette and jacket and to entrap a definite volume of gas in the burette. By applying further pressure to the bulb 38 the gas is forced into the absorber 26. Pressure on the bulb is finally relaxed till the water levels in the burette and jacket coincide, enabling the volume of residual gas to be read at atmospheric pressure.

7. 发明专利

GB253360A Means for indicating the efficiency of electrical power units 未知
公开(公告)号：GB253360A
公开(公告)日：1926-06-17
申请号：GB1570225
申请日：1925-06-17
申请人： REPUBLIC FLOW METERS CO
IPC分类号： G01L3/26
摘要： 253,360. Rogers, F. H., (Republic Flow Meters Co.). June 17, 1925. Dynamometers. - In measuring the efficiency of electric power units comprising a steam turbine or other prime mover 10 and an electric generator 11 by means of an indicating instrument having two circuits, the current in one circuit is controlled according to the load output of the unit, and the current in the other circuit is varied inversely as the power supplied to the unit by a U-tube 15 containing a balanced column of mercury 16 controlling the current in the circuit and operated by the differential pressure set up by an orifice 14 in the conduit 13 supplying steam or other power medium to the turbine &c. The mercury may vary a non-inductive resistance 21 through contacts 22, the resistance 21 being in series with the pressure coil 20 of a wattmeter or the moving coil of an electrodynamometer, the current coils 19 or stationary coils being in series with the load 18. In the case of a polyphase generator, one indicating instrument is sufficient if the load is balanced, but, if the load is unbalanced, the number of instruments and resistances is one less than the number of wires leading from the generator.

8. 发明专利

FR534217A 未知
公开(公告)号：FR534217A
公开(公告)日：1922-03-22
申请号：FR534217D
申请日：1921-04-18
申请人： REPUBLIC FLOW METERS CO
IPC分类号： G01F1/37

9. 发明专利

DE468726C 未知
公开(公告)号：DE468726C
公开(公告)日：1928-11-19
申请号：DER0059932
申请日：1923-12-18
申请人： REPUBLIC FLOW METERS CO
IPC分类号： G01L7/00

10. 发明专利

GB291681A Improvements in or relating to electrical testing instruments 未知
公开(公告)号：GB291681A
公开(公告)日：1928-06-07
申请号：GB3157827
申请日：1927-11-24
申请人： REPUBLIC FLOW METERS CO
IPC分类号： G01R17/10
摘要： 291,681. Electroflo Meters Co., Ltd., (Republic Flow Meters Co.). Nov. 24, 1927. Resistances, measuring; testing and calibrating instruments. - A single instrument is arranged so that the readings of voltmeters may be. compared and resistances measured, particularly the resistances of the leads from the thermo-couple to the voltmeter in a pyrometer. Equal resistances 10, 11, Fig. 3, are arranged to form the ratio arms of a wheatstone bridge, of which the third arm is formed by a rheostat 17 and the fourth arm by the leads of which the resistance is to be measured, which are connected to terminals 28, 29. A dry cell 16 is connected across the points A, K by placing a switch 18 on contact 19. The millivoltmeter of the pyrometer is connected to terminals 26, 27 and is used as the indicating instrument of the bridge. For comparing the readings of the millivoltmeter with a standard the instruments to be compared are connected in parallel between terminals 26, 29, so that they measure the voltage drop across the rheostat 17, and their readings may be compared for various potential by shifting the arm 30. Current is supplied from the cell 16 through the resistance 11 and one of a series of resistances 12 - - 15 to which connection is made by the switch arm 18. As shown in Fig. 2 the rheostat 17 is wound over a strip of insulating material 33 carried by the upper curved edge of an insulating plate 32. The rheostat arm 30 makes contact with this resistance and is bent as shown to form a pointer 37 moving over a scale 38. The arm 30 is secured to a tubular shaft 40 passing through insulating bushings. Through the tubular shaft 40 passes a plunger rod 44 which is mounted to slide but is prevented from relative rotation bv a pin 45 passing through a slot in the shaft 40. Depression of a knob 46 attached to the rod 44 closes contacts 48 forming the voltmeter switch 25, Fig. 3. Adjustment of the arm 30 is effected by rotation of the knob 46. The switch arm 18 is carried by a sleeve 43, which also carries a plate 56 on which are figures corresponding to the resistances 12 - - 15 and visible through an aperture 59. The arm 18 is adjusted by a knob 55,

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式