US3456758A

US3456758A - Automatic oiler for journal boxes

Info

Publication number: US3456758A
Application number: US556725A
Authority: US
Inventors: Elmer Garner
Original assignee: RICHMOND FREDERICKSBURG AND POTOMAC RAILROAD CO
Current assignee: RICHMOND FREDERICKSBURG AND POTOMAC RAILROAD CO
Priority date: 1966-06-10
Filing date: 1966-06-10
Publication date: 1969-07-22
Anticipated expiration: 1986-07-22

Description

July 22, 1969 E. GARNER 3,456,758

' I AUTOMATIC OILER FOR JOURNAL BOXES Filed June 10, 19 66 4 Sheets-Sheet 1 Baez-rue. "i

BY wazm v ATTORNEYS y 1969 E. GARNER 3,456,758

AUTOMATIC OILER FOR JOURNAL BOXES Filed Jx ine 10, '1966 4 SheetsSheet 2 I INVENTOR 4 2M572 mewe/z ATTORNEYS July 22, 1969 E. GARNER 3,456,758

AUTOMATIC OILER FOR JOURNAL BOXES Filed June 10, 1966 4 Sheets-Sheet 5 mvmon 177/1152 flag/05a 7 ATTORNEYS E. GARNER 3,456,758

AUTOMATIC OILER FOR JOURNAL BOXES 4 Sheets-Sheet 4 July 22, 1969 Filed June 10, 1966 3,456,758 AUTOMATIC OILER FOR JOURNAL BOXES Elmer Garner, McLean, Va., assignor to Richmond, Fredericksburg and Potomac Railroad Company, Richmond, Va., a corporation of Virginia Filed June 10, 1966, Ser. No. 556,725 Int. Cl. F16n 1/00; B61f 17/26 U.S. Cl. 184-2 15 Claims ABSTRACT OF THE DISCLOSURE Apparatus for automatically oiling railway car journal boxes as the car moves along a track wherein the apparatus includes a plurality of switches mounted adjacent to the track and responsive successively to the engagement of the wheel of the car associated with the journal box to initially raise an oiling head from a position adjacent to the ground to a position adjacent to the journal box and to operate an oil injector valve for injecting oil into the journal box as it passes by. The last switch open engagement by the wheel of the car acts to cause the return of the oiling head to the ground position, while at the same time closing the oil injector valve so as to prevent further passage of the oil therethrough.

This invention relates to apparatus for automatically oiling railway car journal boxes as the car moves along a track and, in particular but not exclusively, the invention relates to apparatus for automatically operating an oil injector valve for injecting oil into .a journal box as it passes by, where a plurality of switches are mounted adjacent the track and are successively responsive to the engagement of the wheel of the car associated with the journal box to provide the automatic opening and closing of the oil supply to the oil injector valve.

Also, this invention relates to apparatus for preventing damage to the oiling apparatus whenever the apparatus is struck by an obstruction projecting from the railway car.

It is well known that journals of railway cars must be regularly oiled to avoid serious damage. If this is not done, they can run hot, causing what is commonly referred to as a hot box, which in turn can result in a serious accident.

Thus, it is a primary purpose of this invention to prowide improved apparatus for automatically oiling a journ-al box.

Further, it is another purpose of this invention to provide improved apparatus for automatically oiling a journal box by providing a plurality of switches mounted along and adjacent the track where the switches are successively engaged by the Wheel of the railway car to cause the opening and closing of the oil supply for the automatic oiler.

It is another purpose of this invention to provide means for preventing damage to apparatus for automatically oiling a journal box, where pivot means are provided to allow the automatic oiling device to pivot away from the obstructions extending from passing railway cars which strike the oiling device.

Other objects and advantages of this invention will become apparent upon reading the appended claims in conjunction with the following detailed description and the attached drawings, in which:

FIGURE 1 is a top view showing a journal box and wheel in position to receive oil from the automatic oiler;

FIGURE 2 is a side view of the equipment illustrated in FIGURE 1;

FIGURE 3 is a side view showing the detailed con- United States Patent struction of an illustrative embodiment of the automatic oiler;

FIGURE 4 is an end view of the illustrative embodiment shown in FIGURE 3;

FIGURE 5 is a top view of the illustrative embodiment shown in FIGURE 3; and

FIGURE 6 is an illustrative schematic diagram of the electrical circuitry employed in the invention.

Referring to FIGURES 1 and 2, there is shown a wheel 10 of a railway car (not shown), the wheel moving in the direction of the arrow. A detector 12 senses the journal boxes 14 needing oil after certain preliminary steps have been accomplished. For instance, in some applications, inspectors determine which of the journal boxes require oiling, these inspectors being located at a point uptrack or prior to the automatic oiling device. If the journal box does not require oil the cover lid for the journal box is closed by the inspector. However, those journal boxes requiring oil will have the cover lid left open by the inspector. The detector 12 senses which lids are open.

Electric switch 16 which is mounted adjacent to the track 18 is actuated in response to the engagement thereof by the wheel 10 of the railway car after the car passes the detector 12. If the detector 12 has sensed that the journal box requires oil, this will condition the circuitry controlled by switch 16 so that an air solenoid valve 20 may be energized, the purpose of which will be described in detail hereinafter.

Referring to FIGURES 3, 4 and 5, there is shown respectively the side, end and top vieys of an illustrative embodiment of an automatic journal oiler. The automatic oiler includes an oiling head assembly generally indicated at 22. Assembly 22 includes swivel means comprising a bottom or base plate 24, a top plate 26, and a rotatable bearing assembly 28. The top plate has an extension or projection 30 from one side thereof which engages the passing journal box in a manner to be described hereinafter and thereby causes the oiling head assembly to swing or swivel with the journal box as the journal box passes by the automatic oiler.

The oiling head 22 also includes a bracket 32 which is mounted upon the top plate 26 and an oiling nozzle 34 which is attached to the bracket 32 by appropriate means such as shown in FIGURE 4. The nozzle is connected to an oil injector valve or solenoid 3 6 by flexible oil hose 38. The input side of the oil injector valve 36 is connected to an appropriate source of oil under pressure through tubing 40. Oil injection valve 36 is electrically energized in response to the engagement of switch 40 by Wheel 10, see FIGURE 1.

Air solenoid valve 20 is connected to a suitable source (not shown) of air under pressure through tubing 42 as shown in FIGURE 3. When valve 20 is electrically energized by the engagement of switch 16 by the wheel 10, air is supplied to cylinder and piston assembly 44 through flexible air hose 46 and air valve 47. The assembly 44 com prises a vertically disposed cylinder 48 and a piston and rod assembly 50 which is reciprocally mounted within the cylinder 48. The bottom plate 24 of the oiling head assembly 22 is connected to the top of the piston and rod assembly or piston means 50. When the solenoid valve 20 is energized, the piston and rod assembly is raised away from the cylinder 48 (as shown in FIGURE 2) together with the oiling head assembly 22 thereby positioning the oiling head assembly adjacent to the journal box as it passes by the automatic oiler. In order to quickly position the oiling head assembly adjacent the journal box, the air is exhausted from the top of cylinder 48 through a quick release valve 52 connected to flexible air hose 54 at the same time' that air is supplied to air valve 47 through air hose 46.

Cylinders

49 and 51 and rods 43 and 55 are provided to stabilize the pistonand rod assembly 50 when it is in its raised position. The

rods

53 and 55 are reciprocally mounted in

cylinders

49 and 51 respectively and they are both attached to bottom plate 24 so that when piston and rod assembly 50 is raised the

rods

53 and 55 are also in their raised position as shown in FIGURE 2.

The cylinder 48 is mounted onto a bracket 56 by

further brackets

58 and 60. The bracket 56 is pivotally mounted onto housing or support member 62 by pivot bolt '64, thereby providing means for preventing damage to the oiling head whenever it is struck by a projection or obstruction extending from a railway car as it passes the oiler. After the obstruction passes by, the oiling head 22 is returned to its normal position by a spring 66, which is connected at one end to the housing 62 and at the other end to the cylinder and piston assembly 44. Since the journal box will not be oiled whenever an obstruction strikes the oiling head, means are provided to actuate an alarm indicating this fact to an operator. The alarm actuating means include a normally open switch 68 which is held in this position by the arm 70 which is pivotally mounted to the housing 6-2 at point 72, see FIGURE 4. The other end of arm 70 rests on or is supported by a bracket 74 which is connected to the piston and cylinder assembly 44. Thus when the obstruction pivots the cylinder and piston assembly 44 about the pivot bolt 64 past a predetermined point determined by the width of the bracket 74, the restraining influence on switch 68 is removed because the bracket 74 moves sideways permitting the arm 70 to fall about its pivot point 72 and release switch 68 thereby energizing the aforementioned alarm circuit and cutting off the supply of oil and lowering the raised oil head assembly.

Reference should now be made to FIGURE 6 which shows a schematic diagram of the electrical circuitry employed in the automatic journal box oiler of this invention. Wires100 and 102 are connected to opposite sides of a main power supply 101, which typically is 115 volts, 60 cycles. Relay 104 is connected to a signal source 103 which is energized when the train is being humped. The automatic oiler operates only when this hump signal is present. Relay 104 controls normally closed switch 106 and normally open switch 110. Switch 106 is connected in series with a float switch 108 and a solenoid 111 which controls the supply of oil to a main oil tank (not shown) which is connected to tube 40 (see FIGURE 3) to supply oil to oil nozzle 34 through valve 36 when needed. Switch 108 prevents further oil from being supplied to the main tank when the level of the oil in the main tank reaches a predetermined level.

Switch 110 is connected in series with switch 68 which is actuated whenever the piston and cylinder assembly 44 is struck by an obstruction projecting from a railway car, this being described in relation to FIGURES 3 to 5. The switch 68 is shown in its normal position. Terminal 112 of switch 68 is connected to an alarm device 115, which is actuated from the main supply 101 when switch 68 is transferred to terminal 112 and switch 110 is closed.

Switch 68 is connected in series with detector switch 13 over line 114. As already stated with respect to FIG- URE 1, switch 13 is closed whenever a journal box requires oiling. Relay 116 is connected in series with switch 13 over line 118 and is energized by the closure of switch 13, the energization

circuit including lines

1100, 120, 122, relay 116, line 118 switch 13, line 114, switch 68, switch 110 and line 102. Relay 116 controls switches 124, 12-6 and 128, all of which are normally open. 'Before any of the functions of the automatic oiler can be formed, it is necessary that relay 116 be energized, which in turn depends on detector 12 sensing a journal box requiring oil.

Line 130 is connected to line 1 14 and switch 132 which is controlled by a timer relay 134. The timer relay is of thetype which automatically closes switch 132 upon energization thereof. However, a predetermined time interval must elapse before switch 132 is released or opened after the deenergization of relay 134. This type of time delay relay is well known to those having ordinary skill in this art. Normally open switch 132 is connected in series with normally closed switch 136 which is opened in response to engagement thereof by the wheel 10 of the railway car. See FIGURE 1, which shows switch 136 mounted adjacent to the track 18 and down track from the

switches

16 and 40. Switch 136 turns the automatic oiler oit upon engagement thereof in a manner which will be described in more detail hereinafter. Switch 136 is connected in series with

switches

124 and 126 over line 138.

Switch 124 applies a holding current to maintain the energization of relay 116 when switch 13 opens after disengagement by wheel 10. Switch 126, when closed, applies conditioning current over line 140 to the remaining circuitry. This conditioning current flows only after the

switches

16 and 48 have been actuated by engagement by the wheel 10.

Switch 128 is connected to line 114 via line 142. This switch, when closed, applies energizing current to air solenoid 20 and oil solenoid 36 over line 144 when the

respective switches

146 and 148 are closed. The closure of switch 146 depends upon the engagement of switch 16 by the wheel 10 of the railway car. Switch 16 is connected to line 140 via

lines

147, 149 and 150. Switch 16 is connected to one side of railway 152 by line 154. The other side of relay 152 is returned to the main power line by lines 156 and 120. Relay .152 controls normally closed switch 158 and normally open switches 160 and 146. The energization of relay 152 causes switch 146 to close and energize solenoid 20 thereby raising the oil head assembly 22 to a position adjacent the journal box, as described hereinbefore with respect to FIGURES 3 through 5.

The closure of switch 160 energizes a holding circuit for relay 152 to maintain the energization thereof when switch :16 opens after wheel 10 disengages switch 16. The holding circuit includes line 102, switch 110, switch 68, line 114, line 130, switches 132, 136, line 138, switch 126,

lines

140, 150 and 149, switch 160, line :162, relay 152, line 156, line and line 100. Switch 132 is closed at this time as will be apparent from the description hereinafter.

Relay 164 is energized when switch 40 is closed in response to the engagement thereof by wheel 10 of the railway car. Switch 40 is connected to line by line 166 and is connected to one input terminal of relay 164 by line 168. Thus, when switch 40 closes, energizing current for relay 1164 is applied from line 140 through line 166, switch 40, line 168, through relay 164, line 170, and then to line 100 through line 120. The relay 164 controls normally

open switches

172 and 148. When relay 164 is energized, switch :148 closes thereby energizing oil solenoid 36 from line 144 to line 120. Switch 172, upon closure, closes a holding circuit for relay 164. The holding circuit includes line 140, switch 172, line 174, relay 164 and line 170. Thus the oil solenoid 36 is maintained in its energized condition even though the switch 40 is released after disengagement with the Wheel 10 of the railway car.

Referring to FIGURE 1, it will be noted that it is possible for the wheel 10 to stop between

switches

40 and 136. If this happens, switch 136 is not energized and therefore the automatic oiling device is not turned off. Hence oil would continue to squirt out of oil nozzle 34 if not measures were taken to prevent this possibility. However, timer relay 134 is provided for this purpose. One terminal of this timer is connected to switch 158 via line 176 and the other terminal of this timer is connected to line 120 via line 178. The operation of relay time will become apparent from the following description of the invention.

Having now described the various elements comprising this invention, the operation thereof will now be described. Referring to FIGURE 1, it will be assumed that the wheel is not in the position shown but rather to the left of the detector 12 initially and moving to the right. At this time power will be supplied from source 101 to lines 100 and 102. Also the hump signal source 103 is active and energizes relay 104, thereby opening switch 106 and closing switch 110. This is the condition of the circuitry shown in FIGURE 6 before the wheel 10 passes in front of the detector 12.

If the journal box associated with wheel 10 requires oiling, switch 13 will be closed in the manner hereinbefore described. When switch 13 closes, relay 116 is energized thereby closing switches 124 through 128. Also, at the

instant switches

124 and 126 close, current is applied from line 118 through line 119,

switches

124 and 126,

lines

140 and 150, switch 158, line 176 through relay 134, and

lines

178 and 120 to line 100, thereby energiz ing timer relay 134. The energization of relay 134 closes switch 132 thereby energizing the holding circuit for relay 116 which is completed from line 114 through line 130, switch 132, switch 136, line 138, switch 124, line 119, relay 116, line 122 to line 120. Thus, as the wheel 10 moves along the track 18 to the right, the relay 116 remains energized as the journal box moves away from the detector 12 even though switch 13 opens.

The switch 16 is next actuated as the wheel 10 moves along the track thereby causing pressurizing air to be supplied to the bottom of cylinder 48 (which, of course, results in the raising of oiling head assembly 22 to a position adjacent the journal box to be oiled) because of the energization of air solenoid 20. This happens in the following manner. When switch 16 closes in response to the engagement thereof by wheel 10, relay 152 is energized through the following path: line 102, switch 110, switch 68, line 114, line 130, switch 132 (which has been closed by the energization of relay 134), switch 136, line 138, switch 126,

lines

140, 150, 149 and 147, switch 16, line 154, relay 152, line 156, line 120, line 100. The energization of relay 152 closes switch 160 thereby providing holding current to relay 152 which starts from line 140 and goes through

lines

150, 149, switch 160, line 162 through relay 152 to line 156 and back to the opposite side of the main power supply 101. Switch 146 also closes thereby energizing air solenoid 120 to raise the oil head assembly 22.

Switch 158 opens, upon energization of relay 152, thereby removing the de-energizing circuit from relay 134. However, switch 132 is not immediately released or opened. Rather the opening of switch 132 occurs after a predetermined time interval, as established by timer relay 134, elapses. This predetermined time interval is established to ensure that no oil is wasted whenever the wheel 10 happens to stop between the switch 40 which initiates the injection of oil and the switch 136 which cuts off the flow of oil to nozzle 34. Thus switch 132 will open a predetermined period of time after the oil head assembly 22 is raised into position thereby cutting off the flow of oil and lowering the oil head assembly, as will be explained in more detail hereinafter.

After the wheel passes switch 16, the oil head assembly 22 is at the proper height to inject oil into the journal box. As the journal box passes the oil head assembly in this raised position, it engages extension 30 (see FIG- URES 1 and 5) so that the oil injection nozzle 34 is swung or swiveled about on the bearing 28 as the journal box opening passes by. As soon at the nozzle is positioned in front of the journal box, the switch 40 is engaged by the wheel 10 thereby supplying oil through the solenoid valves 36 to the nozzle 34. Referring to FIG- URE 6, the actuation of switch 40 results in the flow of oil through nozzle 34 in the following manner. With switch 40 closed, relay 164 is energized from line 102,

switches

110 and 68,

lines

114 and 130,

switches

132 and 136, line 138, switch 126,

lines

140 and 166, switch 40, line 168, relay 164,

lines

170 and 120, back to line 100.

The relay 164 is held in its energized position by the closure of switch 172 which supplies current from line through line 174 through relay 164 and line to return line 120. With the closure of switch 148 oil solenoid 36 is energized from

lines

114 and 142, switch 128, line 144, switch 148, solenoid 36 and back through line 120. As stated above, oil will continue to be squirted from nozzle 34 until the wheel 10 engages switch 136. At this time the journal box will have moved past the projection 30 allowing the oil head assembly 22 to return to its normal position shown in FIGURE 5. The return to this normal position is accomplished by spring 31 which is attached at one end to the projection 30 and at the other end to a projection 33 which extends from the non-rotating bottom plate 24, see FIGURE 2.

When switch 136 is actuated in response to the engagement thereof by wheel 10, it opens the holding circuit for relay 116 thereby releasing switches 120 through 128. The release of switch 126 opens the holding circuits for

relays

152 and 164. The release of

switches

146 and 148

de-energizes solenoids

20 and 36, respectively, thereby resulting in (l) the lowering of the oil head assembly 22 to a point near the ground which is clear of any obstructions which may be projecting from the passing railway car and (2) the closing of the oil supply to oil injection nozzle 34.

Since switch 132 is in series circuit with switch 136, the opening of switch 132, after the predetermined time interval established by timer relay 134 has elapsed, will cause the same effect as the opening of switch 136. Thus, as stated before, the waste of oil which results when the wheel 10 stops between

switches

40 and 136 is eliminated.

Whenever switches 132 or 136 are opened, the air solenoid valve 20 is closed in the manner described above. With valve 20 in the closed position, air is supplied to the top of air cylinder 48 through flexible tubing 54 and air valve 52, and exhausted through quick-release valve 47 at the bottom of the air cylinder. Thus, the piston and rod assembly 50 is returned to its lower position within cylinder 48.

As stated hereinbefore, switch 68 actuates an alarm 115 and lowers the raised oiling head assembly 22 whenever the assembly 22 is struck by a protuberance or obstruction extending from the railway car. When the oilmg head assembly is struck by an obstruction, switch 68 is transferred to terminal 112 thereby closing the alarm circuit and opening the holding circuit for relay 116, which results in the automatic oiler being cut off in a manner similar to that described for the opening of

switches

132 or 136.

Broadly speaking, the invention comprises first switching means (switch 40) for controlling oil injector valve 36 and causing oil to be injected into a journal box; second switching means (switch 136) mounted downtrack from switch 40 for closing valve 36 in response to engagement by the wheel of the railway car; and third switching means (switch 16) mounted uptrack from switch 40 for raising oiling head assembly 22 from a position relatively near the ground to a position adjacent the journal boxes. The third switching means also performs the function of initiating a predetermined time interval where oil injection valve 20 is closed if the switch 136 is not opened by the time the predetermined time interval elapses.

Also, the invention includes means (pivot bolt 64) for pivotally mounting the oiling head assembly 22 to prevent or lessen damage thereto whenever it is struck by an obstruction extending from a passing railway car.

' Numerous modifications of the invention will become apparent to one of ordinary skill in the art upon reading the foregoing disclosure. During such a reading, it will be evident that this invention has provided a unique equipment for accomplishing the objects and advantages herein stated. Still other objects and advantages, and even further modifications will be apparent from this disclosure. It is to be understood, however, that the foregoing disclosure is to be considered exemplary and not limitative, the scope of the invention being defined by the following claims.

What is claimed is:

1. In apparatus for oiling railway car journal boxes as the car moves along a track:

means for injecting oil into said journal boxes, said means including an oiling head assembly and an electrically controllable oil injector valve mounted along side the track, operable to enable the injection of oil by said oiling head assembly into the journal boxes as the journal boxes pass by;

first switching means mounted adjacent the track responsive to the engagement thereof by a wheel of the car for controlling said oil injector valve and for enabling the injection of oil into the journal boxes;

second switching means mounted adjacent the track and downtrack from said first switching means for closing said valve in response to engagement by a wheel of the car; and means operatively associated with said oil injecting means for raising and lowering a least said assembly from a position relatively near the ground to a position adjacent said journal boxes as each of said boxes passes adjacent to said apparatus. 2. Apparatus, as in claim 1, including: switching means responsive to said apparatus being struck by a protuberance or obstacle projecting from the side of the car to close said valve and energize an alarm indicating that a journal box has not been oiled. 3. In apparatus for oiling railway car journal boxes as the car moves along the track:

an electrically controllable oil injector valve mounted alonge side the track, operable to enable the injection of oil into the journal boxes as the journal boxes P y;

second switching means mounted adjacent the track and downtrack from said first switching means for closing said valve in response to engagement by a wheel of the car; an oiling head assembly connected to said oil injector valve and electrically controllable means for raising said assembly from a position relatively near the ground to a position adjacent said journal boxes;

third switching means mounted uptrack from said first switching means responsive to the engagement of a wheel of the car for actuating said oiling head assembly raising means; and

controllable means for lowering said assembly from said raised position to its original position near the ground, said controllable lowering means being actuated in response to the engagement of said second switching means by a wheel of the car, thereby removing said assembly from protuberances which may be projecting from the side of said railway car.

4. Apparatus, as in claim 3, including:

detecting means for sensing a journal box requiring oil; and

fourth switching means responsive to said detecting means for preventing the actuation of said controllable oil injector valve by said first switching means until said fourth switching means is actuated by said detecting means.

5. Apparatus, as in claim 4, including-switching means responsive to the presence of railway cars on the hump of a railroad yard moving in a predetermined speed range for conditioning the operation of the first, second, third and fourth switching means by connecting them to a power supply.

6. Apparatus, as in claim 3, where said third switching means is in circuit with said controllable means to initiate a predetermined time interval upon engagement by said wheel where said oil injection valve is closed if said second switching means is not engaged by said wheel before said predetermined time interval elapses.

7. Apparatus as in claim 6 where said controllable means for lowering said oiling head assembly to its original position near the ground is also in circuit to be actuated when said predetermined time interval elapses before said second switching means is engaged by a wheel of the car.

8. Apparatus for oiling railway car journal boxes as the car moves along a track, said apparatus comprising:

a support member;

vertically disposed cylinder means pivotally mounted to said support member;

piston means reciprocally mounted in said cylinder means and extending from the upper ends thereof;

swivel means supported by said piston means at the upward end of the piston means;

a nozzle supported at one end thereof by said swivel means, said swivel means providing swinging movement of the nozzle in a substantially horizontal plane;

means for pressurizing the cylinder between its lower end and said pis on means for projecting the piston means and moving the swivel means and nozzle away from the cylinder and into a position adjacent to a journal box to be oiled;

a horizontally projecting member extending from said swivel means for engaging a portion of said car as it moves along the track, thereby providing said swinging movement of the nozzle;

electrically controllable means for supplying oil to said nozzle while the piston means is projected;

switching means for successively actuating said pressurizing means and said means for supplying oil after the piston means is extending in response to the engagement of said switching means by a wheel of said car; and

means for cutting off said oil supplying means whenever a protuberance projecting from the railway car causes said pivotally mounted cylinder to be pivoted beyond a predetermined point.

9. Apparatus as in claim 8 where said means for cutting off the oil supply means includes:

switching means for removing energizing power from said electrically controllable oil supply means when actuated; and

a member in removable contact with said vertically disposed cylinder means for holding said last-mentioned switching means in its unactuated position until said cylinder moves beyond a predetermined point.

10. Apparatus as in claim 9 and where said holding member rests at one end thereof on a bracket connected to said cylinder and is pivotally connected to said housing means at the other end thereof, said predetermined point being determined by the width of said bracket.

11. Apparatus as in claim 8 including means for returning said pivotally mounted cylinder to its normal vertically disposed position after said protuberance passes by said cylinder.

12. Apparatus as in claim 11 where said returning means includes a spring attached to said cylinder and to said support member.

13. Apparatus as in claim 8 where said swivel means includes a non-rotatable base plate connected to the top of said piston means, a rotatable bearing assembly attached to said base plate, and a top plate connected to said bearing assembly for supporting said nozzle.

14. Apparatus as in claim 13 where said horizontal projecting member extends from said top plate, said apparatus including a spring for returning said swivel means to its initial position, said spring being connected between said projecting member and said base plate.

15. Apparatus as in claim 6 wherein said controllable means includes:

first relay means in circuit with said forth switching means and with each of said means for raising said oiling head assembly and said electrically controllable oil injector valve; second relay means in circuit with said first relay means and said third switching means wherein said second relay means is energized upon the successive energization of said first relay means and the closing of said third switching means; and third relay means in circuit with said first and second relay means and with said first switching means wherein said third relay means is energized upon the successive energization of said first relay means and the closing of said first switching means.

References Cited UNITED STATES PATENTS 10/1951 Rivers 1842 12/1953 Fisher 184-2 8/1954 Fuehrer 184-2 10/ 1955 Gardner et a1 1842 6/1962 Hall et a1. 1842 12/1963 Stanley 246-246 11/1964 Nelson 84-2 8/1965 Bryant 184-2 9/1965 Klatchko 1842 9/1965 Amundson 184-2 HOUSTON H. BELL, 111., Primary Examiner US. Cl. X.R.