Pump-actuating mechanism for carbureters.

Abstract

Claims

N. J. RUSSELL. PUMP AGTUATING MECHANISM FOR GARBURETBRS. 2 SHBETS-SHEET 1. Patented July 14, 1914, APPLICATION FILED 11017.29, 1912. lnvenim'l 72M fiiwe By his Aiiiarrwys, ZOWW Witn esses 365% $4 f 1H5 NORRIS PETER; (10..PHOIOLITNO,WAIHNUTON. D. c. N. J. RUSSELL: PUMP AGTUATING MECHANISM FOR GARBURETERS. v APPLIGATXON FILED NOV.29, 1912. 34,13,224 Patented July 14, 1914. 2 SHEETSSHEET 2. lnuenior! mm fimd Bu his Al OT'IIEIS 5. 6. fimw 3 M 114E NORRIS PETERS c0. PHOTO-L/THQ, WASHINGTON. D. C. NELsoiv J. RUSSELL, or MINNEAPOLIS,MINNESOTA. PUMP-ACTUATING MECHANISM FOR CARBURE'IERS. Specification of Letters Patent. Patented July 14, 1914. Application filed November 29, 1912. Serial No. 734,057. I To all whom it may concern: Be it known that I, NELSON J. 'RUssELL, a citizen of the United States, residing at lVIinneapolis, in the county of Hennepin and State of Minnesota, have invented certain new and useful Improvements in Pump- Actuating Mechanism for Carburetors; and I do hereby declare the following to be a full, clear, and eXact description-of the invention, such as will enableothers skilled in i the art to which it appertains to makeand use the same. -My present invention'has for its object to provide improved pump actuating mechanism for air carbur'eting apparatus, the term pump being used in a broad sense to 1n- ,clude devices for supplying either air or volatile oil under pressure. Particularly, this invention is in the nature of an improvement on pump actuating mechanism disclosed and claimed in my pending applications. N. 660,915, filed of date, November 17 1911. Generally stated, the invention conslsts of the novel. devices and combinations of devices hereinafter described and defined in the claims. In the accompanying drawings which illustrate the invention,like characters indicate like parts throughout the several views. Referring to the drawings, Figure 1 is a view in end elevation showing an air carbureting apparatus in which the several features of my invention are incorporated; Figs. 2 and 3 are detail views showing a lever and pawl and ratchet device constituting a novel feature of the pump actuating mechanism; Fig. 4k is a view partly in front elevation and partly in vertical section, and with some parts broken away, showing the carbureting apparatus, and particularly illustrating the pump actuating mechanism; and Fig. 5 is a detail in vertical section taken approximately on the line 00 m on Flg. 4. In the type of air carbureting apparatus shown in the drawings, a rotary air supplying and compressing drum 1, constituting an air pump or blower, is arranged to rotate within the water containing tank 2. The drum. 1 of this air pump or blower is pref- .erably of a common or standard type, the construction and operation of which is well known to thosefamiliar with carbureting apparatus of this general character. The tank 2 is supported by a suitable framework 3, and the drum 1 has a projecting shaftd journaled in the said framework, and, as shown, provided with a small sprocket 5 and with a larger sprocket 6. Secured to one projecting end of the drum shaft 41 is a ratchet wheel 7 having star-pointed teeth. Pivoted on the shaft 4 adjacent to the said ratchet wheel 7 is a hand lever 8 provided with a ratchet dog 9 which will work on the teeth of the ratchet wheel 7 when turned in either direction (see particularly Figs. 2 and 3). The purpose of this lever and pawl and ratchet device will be hereinafter more fully stated. Mounted in the lower portion of one end of the frame 1, below the shaft 41, is a counter shaftlO, on which a Windlass drum 11 may be either loosely mounted, or to which the Windlass drum 11 may be keyed. At its left hand end, as viewed in Fig. 4, the Windlass drum 11 is provided with a ratchet wheel or ratchet toothed hub 12, and at its right hand end, it is provided with one or more laterally projecting ratchet teeth 13 that constitute what may be termed a half-clutch. Loosely journaled on the shaft 10, adjacent to the ratchet wheel 12 is a large sprocket 14 provided with a spring-pressed dog 15 that engages with the teeth of the said ratchet wheel 12. A sprocket chain l6vruns over the sprocket 5 of the drum shaft 4 and over the said large sprocket 14;. Loosely j ournaled on the right hand end of the counter shaft 10 is another sprocket17. This sprocket 17 is free also for lateral movements and is provided with one or more laterally projecting ratchetteeth 18 constituting what may be termed a halfclutch, and arranged for cooperation with the half-clutch 13 on the drum 11. I The hub of the sprocket 17 is shown as provided with a circumferential groove 19 with which a shipper lever, not shown, is adapted to engage to impart lateral movements to the said sprocket so as to effect the engagement or disengagement of the half clutches 13 and 18, at will. A sprocket chain 20 runs over the sprocket 17 and over a small sprocket 21 that is secured to the hub of a spur gear 22. The sprocket and gear 2122 are journaled on a stud 23 projected from an upward extension of one end of the frame 3. The gear 22 meshes with a. spur pinion 24; secured to one end of a short crank shaft 25 journaled in the said end extension of the frame 3 and provided with an operating hand crank 26. a 31,-and at its other end, is attached to and adapted to be wound upon a windlass The numeral 27 indicates a mast which is supported by the framework '3 and is pro.- vided at its upper end with a head 28 to which is journaled guide sheaves 29. The numeral 30 indicates a cable which is passed over the guide sheaves 29',and is provided at one end with an operating weight drum 11. preferably employ a cylinder and pistonfi pump 32, and for driving the pump, as welli as the blower drum 1, from the weight-31, I advisably use connections best shown 1112 detail in Fig; 5. The cylinder structure of; the pump 32 is suitably secured to .thej' framework3, and the stem 33 of the pumpl piston is connected by a link 31to the free; end of a lever 35 that is pivotedto thead-i jacent part of the frame 3. This lever 35? is provided with a longitudinal slot. 36 its free end, thatis' engaged by the wrist pin 37 of'a crank disk or head 38. The crank disk 38, and a small sprocket 39 are both rigidly secured, to a short shaft 10; journaledon the adjacent end bracket of; the frame 3. A sprocket chain 11 runs over? the large sprocket6 on the drumshaft 1, and .overthe said small sprocket 39. Bythe above described arrangement, it is evident that the air pump or'blower and the oil pump willbe operated at predetermined proper-i tionate speeds. 1 Operation Under the force of the weight 31, the pump or blower'drum 3 will be r0 tated in-the direction of the arrow marked on Fig. 1, and under this direction of rot-a tion, the said blower will supply air to the carbureter, not shown. The speed of the rotation of the said blower drum will be service, the oil pump 32 will supply oil to the said carbureter, not shown, through suitable and well known connections, not illustrated. When the pump isoperative on the blower drum, its power is transmit; ted from the windlass drum 11 to the sprocket 141-, through the pawl and ratchet device ,1215; and at such time, the sprocket 17 is movable laterally out of en? gagement with the half clutch 13 of the said drum 11, as shown in Fig. 4. hen the weight is to be wound up, the sprocket 17 is moved laterally and engages the half clutch, 18 with the half clutch 13 of the windlass drum, and then by manipulation of the crank 26, the said windlass drum may be rotated in a direction to wind up v the cable 30 thereon, and hence, raise the Forsupplying the hydro-carbon oil, parted to the blower drum 1 an d its shaft However, when the said blower drum is relieved from the force of the propelling weight 31, there will 'be a tendency to rotate the same backward, due partly to the re-action of the compressed air therein and partly to friction between the'driving connections. This backward rotation of the said drum will be positively prevented when the hand lever 8 is dropped onto the stop 8 on the frame 3, as shown in Fig. 1, and the dog 9 is then turned upward into engagement with the "teeth of the ratchet wheel 7, as shown inFig. This is the positioninwhich the said lever and dog jshould beset for raising the weight when no gas is being used. When gas is being drawn 01f orused during'the time that the weight is being re-woun'd, the pressure willrapidly fall, sometimes 'to such an extent that the lights will go out." To prevent this, the operator, by taking hold of "the end of the'lever 8 and slowly raising the ing raised,by thus imparting axslow rotation to the saidblower drum 1 in a :forward direction, to-wit, in the direction of the arrow'marked on Fig. 1. The ratchet wheel 7 lever B, and dog 9 have another or third :highly important function. In cleaning outthe machine, the same, may maintain the normalor desired T pressure onthe gas while the weight is bewater shouldbe forced out of the blower drum, and this, as is well known, is ac-- 1 complished by giving the said drum abackward rotation, To impart this backward rotation of the drum, which is. always inclosed in an airtight casing, and hence,; inaccesslble for direct contact,'the operatoronly need first raise "the lever 8 and then throw the dog 9 downward and into engagement with the teeth of the ratchet wheel 7 and then by a continued downward movement of the said lever, said blower drum may be positively rotated backward and the water dischargedtherefrom. When the machine is in normal action from the weight 31, the dog 9 may turned downward into an idle position, shown in Fig. 1. What I claim is: I j 1. The combination with'a rotary body, of a power device for rotating'said-body a man operative direction, means for 1'e-' winding or setting saidv power device without imparting backward rotation to said body,.and an auxiliary power device opera- 1 tlve, when moved in one direction to rotate. said body while said power device isbeing re-set, operative whenlield still to; prevent rotation of said bodyyand operative when moved in the opposite'direction to impart backward rotation to said body. v I 2. The combination'with a. rotary body, of a power device *forrotating said body in an operative direction, means for rewinding or setting said power device without imparting backward rotation to said body, and an auxiliary power device operative, when moved in one direction to rotate said body while said power device is being reset, operative when held still to prevent rotation of said body, and operative when moved in the opposite direction to impart backward rotation to said body, said auxiliary power device including an operating pawl and ratchet. 3'. The combination with a rotary body, of a power device for rotating said body in an operative direction, means for rewinding or setting said power device without imparting backward rotation to said body, an auxiliary power device operative, when moved in one direction to rotate said body while said power device is being reset, operative when held still to prevent rotation of said body, and operative when moved in the opposite direction to impart backward rotation to said body, said auxiliary power device including an operating pawl and ratchet, the said pawl being rendered operative when said lever is moved to a predetermined position, and a stop for supporting said lever in said predetermined position. In testimony whereof I afiix my signature in presence of two witnesses. NELSON J. RUSSELL. Witnesses: HARRY D. KILGORE, F. D. MERCHANT. Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. 0."

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