US1057026A - Lubricating system. - Google Patents

Description

S. T. ARNOLD. LUBRIGATING SYSTEM. APPLICATION FILED SEPT.-8, 1911.

Patented Mar. 25, 19 1.3.

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I INVENTOR ,saflerlee Jfflrnold WTESSES:

his ATTORNEY SA'ITERLEE T. ARNOLD, 0F CLEVELAND,

OHIO, ASSIGNOR TO THE STANDARD SEWING MACHINE COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

LUBRICA'IING SYSTEM.

Specification of Letters Patent. Application filed September 8, 1911.

Patented Mar. 25, 1913. Serial No. 648,302.

To all whom it may concern:

Be it known that I, SATTERLEE T. ARNOLD, citizen of the United States, and resident of Cleveland, in the county of Cuyahoga and State and useful Improvements in Lubricating Systems, of'which the following is a specification.

The principal object of this invention is powermeans for lubricating to provide, in connection with a transmitting device, a bearing in such a manner that the journal surfaces will be kept thoroughly oiled, and at the same time spattering of oil over surrounding objects and portions of the mechanism, due to centrifugal action or other causes, will be prevented. In order to accomplish these results an oil-conveying means is employed which includes as one of its main elements a wick or equivalent .device for conveying oil from a suitable source of supply to the surfaces to be lubricated, the transmission of the oil being due in such case to capillary action. At a suitable point or points, adjacent to each bearing to which oil is supplied by the mean just described, means will be provided for catching surplus oil that exudes from each bearing and return-.

ing it to circulation. The means preferably employed for catching and returning this oil is a combined oil-guard and catch-basin,

which will usually completely surround the opening through which the 011 exudes from the bearing, the construction being such thatv the guard will lie in the path of all oil that may be thrown off from the hearing, by

centrifugal force or otherwise, and restore this surplus oil to circulation, either by delivering it directly into contact with the wick itself or by delivering it into an oil.- supply cup in which a portion of the wick is preferably immersed.

Other features of the invention will be hereinafter described and claimed and are illustrated in the accompanying drawings, in which a Figure l is an enlarged rear elevation of the transmitting device proper, detached from the sewing machine table. Fig. 2 is a horizontal section of the same, the section being taken in line 22 of Fig. 1, looking in the direction of the arrows. Fig. 3 is a transverse section of a portion of the same, the section being taken in line 33 of Fig. 2, looking in the direction of the arrows,

of Ohio, have invented certain new' and illustrates the manner in which the wick cooperates with the oil-guard and catch-basin located at the meeting faces of the driving and driven pulleys. Fig. 4 is a similar view, the section being taken in line 4-4c of Fig. 2, looking in the direction of the arrows, and illustrates the manner in which the extreme end of the wick is held at the terminal oil-guard and catch-basin and how it cooperates therewith. Fig. 5 is a detail, illustrating in central longitudinal section the central oil-guard and catch-basin at the meeting faces of said pulleys and the manner in which it cooperates therewith. Fig. 6 is a similar view, illustrating the terminal oil-guard and catch-basin and the manner in which it cooperates with the driving pulley at the outer. face thereof.

Similar reference characters designate like parts in all the figures of the drawings.

The driving pulley 4, which is illustrated as of the type ordinarily employed for transmitting power to sewing machines, has three steps or faces of different diameters for driving the machine. at correspondingly different speeds. This driving pulley 4 in the type of driving mechanism illustrated constitutes one of a pair of cooperative rotary members, the other of which is indicated at 5, and is in this case the driven member of a friction-clutch to which driven membermotion is imparted in a wellknown manner by the driving member 4.

.Here both of these rotary members are mounted for rotation on a shaft 6, which is fastened at its opposite ends in a frame-- work in some suitable manner, it being illustrated as secured at its opposite ends by means of set screws, such as 7 and 8, in the lower ends of a main hanger or bracket 9 and a small bracket 10, the main bracket 9 depending, as is usual, from the under side of a table, while the bracket 10 is secured at its upper end to a bearing 12, extending endwise from the hanger 9. These two brackets, with the bearing 12 and the fixed shaft 6 held in place by the set screws 7 and 8, constitute a practically rigid frame for carrying the principal operative parts of the power-transmitting device. In this transmitter the lubrication of the bearings is effected by conveying oil from a suitable supply reservoir through a wick or equivalent device to the journal surfaces of the parts. At 13 a wick suitable for conveying oil by capillary action ply to these surfaces construction shown,

this wick rests in a longitudinal groove, such as 14-, in the shaft 6, and in certain other grooves and passages that will be referred to later. One end of the wick is usually immersed in the oil-supply reservoir and from this point, in the normal operation of the device, oil is led by capillary action to the various surfaces to be lubricated. Any suitable type of device may be employed as an oil-reservoir. That shown is in the form of an attachment to the bracket 9, this attachment including an oil-supply cup or pan, such as 15, and a guard, such as 16, for covering the driving and driven pulleys at the points thereof nearest the operator.

The principal novel feature of the lubricating means is the provision of a suitable device or devices for receiving surplus oil that exudes from each bearing and restoring it to circulation for use at some other point Where oil is needed. In the preferred construction, a catch-basin is employed for receiving this surplus oil, and this catch-basin is to advantage combined with an oil-guard in such a manner that the oil-guard surrounds the opening through which oil is likely to exude, and the surfaces from which oil is likely to be thrown ofi by centrifugal action, the parts being so constructed and organized that this oil will be prevented from coming in contact with anything except the journal surfaces and the lubricating and protective devices. Each of these combined catch-basins and oil-guards is in the present construction an annular member surrounding the adjacent cheek or cheeks of the rotary member or members and inclosing it or them in such a manner as to prevent oil from dropping or being thrown off onto the work or onto parts of the machine outside the'oil-guards and catch-basins. \Vhen the devices are employed as illustrated herein, in connection with power-transmitting apparatus, these combined catch-basins and oil-guards are usually three in number, one serving to protect the outer end of the hearing of the driven pulley, another the outer end of the bearing of the driving pulley, and the third the inner ends of both of said bearings. These three combined catch-basins and oil-guards are designated respectively by 17 18 and 19. Each has means for catching the surplus oil at the point protected by it and each also has means for returning the oil so caught to the circulation system. In their general features these three devices may be substantially similar in construction, though as shown they vary somewhat in specific details. The first, to wit, 17 is illustrated as being integral with the lower portion or bearing of the hanger 9 and as of annular form. It also has an oil outlet, as shown at 20, immediately above the oil-supply cup 15, this oil outlet serving to return to the main supply the surplus oil that exudes from the right-hand end of the powertransmitting device. The devices 18 and 19 are illustrated as annular members separate from the other parts and are located on the shaft 6 at suitable points in fixed relation with said shaft. The device 18 constitutes a duplex, combined oil-guard and catch-basin and is located immediately adjacent to the meeting faces of the driving and driven pulleys 4t and 5. As most clearly shown in Fig. 5, said device 18 has two undercut or V-shaped annular grooves 21 and 22, constituting, respectively, catch-basins for oil exuding from the juxtaposed bearings for the pulleys at and 5. The overhanging, undercut walls of these annular catch-basins also constitute oil-guards for catching any oil that may be thrown off in any direction from the adjacent bearings of either rotating pulley by centrifugal force. In order that the surplus oil caught in the two catchbasins may be returned to the circulation.

system, the two catclrbasins are shown (see Fig. 5) as preferably connected at the bottom of the device 18, as by intersecting obliquely bored openings 23 and 2 k, and as having a common oil-outlet at 25 through the periphery of the device 18, around which latter in a position opposite the said oil-outlet 25 is passed the wick 13, the object of which is to cause the wick to take up the surplus oil caught in the duplex catch-basin and restore it to circulation for use at other points. In order that the wick may be properly led around the periphery of the device 18, a web portion of said device is preferably formed with a radial bore, as shown at 26,

.through which the wick is led from the shaft 6 to the periphery of the device 18, and then given one turn around the periphery of the latter, and then led down again through said bore back into the longitudinal groove of the shaft 6, the construction being such that the oil outlet 25 is covered by the wick, as shown in Fig. 5.

The last catch-basin, 19, is formed in substantially the same manner as the device 18 by an undercut groove 27, the undercut wall of which also constitutes an oil-guard for catching any surplus oil thrown off by centrifugal force. At the bottom thereof this catch-basin also has an outlet, as shown at 28, which is illustrated as intersecting a peripheral notch 29, into which the extreme end of the wick is looped, as shown in Fig. 1, to hold it in place. Thus surplus oil caught by this catch-basin is also taken up by the wick 18 and restored to the circular tion system. As the opposite end of the wick 13 is shown as immersed in the oil supply contained in the cup 15, it will be clear that capillary action will cause the oil to be drawn from said cup and led to all the journal surfaces of the power-transmitting device; that any surplus oil exuding from any bearing, or thrown off by centrifugal force, will be caught by some one of the various catch-basins, and that any surplus so caught will be returned at some one of those points to the circulation system and led by capillary action in one direction or another, according to the needs of diiferent portions of the journal surfaces; these devices thus operating automatically to maintain a substantially equalized supply of oil at every point requiring lubrication.

What I claim is 1. In a power-transmitting device, the combination with a shaft having a longitudinal groove, of a rotary member journaled on said shaft, an oil-conveying wick seated in said groove for lubricating the bearing of said member, means for supplying oil-to one portion of said wick for circulation, and means including a catch-basin independent of said oil supply cup for receiving surplus oil that exudes from said bearing and restoring it to circulation, by

returning the same to another portion of said wick.

2. In a power-transmitting device, the combination with a shaft, of a rotary member journaled on said shaft, an oil-conveying wick for lubricating the bearing of said member, an oil supply cup in which a portion of the wick may be immersed, a catchbasin for receiving surplus oil that exudes fro-m said bearing, said catch basin having an outlet in position for delivering said surplus oil to an immediately adjacent portion of the wick and so restoring it to circulation.

8. In a power-transmitting device, the combination with a shaft, of a pair of rotary members journaled on said shaft, an oilconveying wick for lubricating the bearings of said members, an oil supply cup inwhich a portion of said wick dips, means including a catch-basin common to'said bearings for receiving surplus oil that exudes from the bearings, and means to return said surplus oil to another portion of said wick.

4. In a power-transmitting device, the combination with a shaft, of a pair of rotary members journaled on said shaft in juxtaposition, an oil-conveying wick for lubricating the bearings of said members, and means including a catch-basin located at the meeting faces of said rotary members for receiving surplus oil that exudes from both of said bearings, said catch-basin having an oil-outlet in position for delivering said surplus oil to an adjacent portion of the wick and so restoring it to circulation.

5. In a power-transmitting device, the combination with a shaft, of a rotary member journaled on said shaft, an oil-conveying wick for lubricating the bearing of said member, means for supplying oil to one portion of said wick for circulation, and means including an annular combined oil-guard and catch-basin for receiving surplus oil that exudes from said bearing and restoring it to the other portion of said wick for further circulation.

6. In a power-transmitting device, the combination with a shaft, of a pair of rotary members journaled on said shaft in juxtaposition, an oil-conveying wick for lubricating the bearings of said members, and means including an annular combined oilguard and catch-basin surrounding said shaft at a point adjacent to the meeting faces of said rotary members for receiving surplus oil that exudes from both of said bearings, said combined oil-guard and catch basin having an oil-outlet in position for delivering said surplus oil to a portion of the wick which is immediately adjacent said outlet and so restoring it to circulation.

7. In a power-transmitting device, the combination with a shaft, of a rotary member journaled on said shaft, an oil-conveying wick for lubricating the bearing of said member, means for supplying oil to said wick for circulation, and means including an annular undercut combined oil-guard and catch-basin for receiving surplus oil that exudes from said bearing and restoring it to circulation.

8. In a power-transmitting device, the combination with a shaft, of a pair of rotary members journaled on said shaft in juxtaposition, an oil-conveying wick for lubricating the bearings of said members, and means including an annular undercut combined oilguard and catch-basin surrounding said shaft at a point adjacent to the meeting faces of said rotary members for receiving surplus oil that exudes from both of said bearings and restoring it to circulation.

9. In a power-transmitting device, the combination with a shaft, of a rotary member journaled thereon, an oil conveying wick for lubricating the bearing of said member, means including a catch-basin for receiving surplus oil that exudes from said bearing, said catch-basin provided with a radial outlet, and said wick having a portion immediately adjacent said outlet to restore the surplus oil in said basin to circulation.

10. In a power transmitting device, the combination with a shaft, of a pair of rotary members journaled thereon in juxtaposition, an oil conveying wick for lubricating the bearings of said members, means including a catch-basin located at the meeting faces of said rotary members for receiving surplus oil that escapes from both of said bearings, said catch-basin having a radial outlet, and said wick having a portion passed circumferentially around said catch-basin and in contact With the oil in said basin at the said surplus oil may escape, and means assooutlet. ciated with said outlet to return the surplus 11. In a power transmitting mechanism, oil to circulation. the conibinatlon With a shaft, of a rotary Signed at Cleveland, in the county of Y 5 member journaled on said shaft, means for Cuyahoga, and State of Ohio, this 31st day 15 lubricating the bearing of said member, an of August A. D. 1911.

annular combined oil guard and catch basin SATTERLEE T. ARNOLD. for receiving surplus oil that exudes from Vitnesses: said bearing, said combined oil guard and CHAS. G. EMMoNs,

-10 catch basin having an outlet through which S. K. BRINEY.

I Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C.

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