US1488870A - Burning-in and running-in machine - Google Patents

Description

April 1 1924. 4 1,488,870

F. DANIELSON BURNING-IN AND RUNNING-IN MACHINE Filed Nov. 4, 1918 2 Sheets-Sheet l F. DANIELSON BURNING-IN AND RUNNING-IN MACHINE A pril 1 ,.1924. 1,488,870

Filed Nov. 4, 1918 2 Sheets-Sheet 2 Bid Patented Apr. 1, 1924.

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FRANK DANIELSON, OF CHICAGO, ILLIITOIS.

BURNING-IN AND RUNNING-11! MACHINE. 7

Application filed November 4:, 1918. Serial No. 260,986.

To all whom it may concern.

Be it known that T, FRANK DANIELSON, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Burning-Tn and Runhing-In Machines, of which the following is a specification.

This invention relates to a machine of the type disclosed in my co-pending application, Serial No. 244,154 filed July 10, 1918, for burning-in and running-in the bearings of internal combustion engines, and its object is broadly, to burn-in and to run-in bearings uniformly to certain predetermined degrees.

Further objects of the invention are to automatically indicate when the operations of burning-in and running-in have been completed according to predetermined requirements, so that the work may be conducted uniformly without depending upon the skill of the operator, and to enable the machine to be readily adjusted for the burning-in or the running-in operations.

In the accompanying drawings,

Fig. 1 is a horizontal view, partly in section, of so much of the complete machine as is necessary to explain and understand the present invention; i

Fig. 2 is a vertical central sectional view;

- Figs. 3 and 1 are detail plan views, partly in section, showing the pulley construction in two positions;

Fig. 5 is an enlarged detail plan view, partly in section, showing the adjustable cam plate;

Fig. 6 is a sectional view on line 6-6 of Fig. 5; and

Figs. 7 and 8 are detail views showing other forms of indicators; and

Fig. 9 is a detail view of the setting de vice.

In the construction and assembly of internal combustion engines, especially for automobiles and motor trucks, it is a more or less general practice at the present time to arrange the partly assembled engine in a suitable machine and to operate the engine shaft at a comparatively low rate of speed to burn-in the bearings to a proper fit, after which the engine is completely assembled and re-arranged in the machine and the engine shaft again operated in oil, tolimbcr the bearings and discover any oil leakage.

It has been customary in the past, so far as I am advised, to depend entirely upon the skill of the operator to conduct the burning in and running-in operations to the desired degree, and consequently there is inevitably a lack of uniformity in the results obtained.

When the burning-in or the running-in operation has been conducted to a predetermined degree with my present invention an alarm Wlll be sounded or other indication given of the completion of such operation thereby warning the operator whose duty is then to stop the machine.

Referring to the drawings which show one embodiment of my invention, 6 indicates a bed frame having two uprights 7 in which the shaft 8 is rotatably mounted. This shaft is adapted to be engaged by means of suitable coupling devices 9 with the end of an engine shaft (not shown) to drive the latter. A clutch 10 of any suitable construction is mounted on the shaft 8 and its loose member is provided with a sleeve 11 (Fig. 2) which has a cross-bar 12 splined or other wise suitably secured thereto. This crossbar is arranged within the pulley 13 which is loosely mounted on the sleeve 11. The ends of the cross-arm are provided with pivoted blocks 1 1 which slide on rods 15 pivotally connected to the cars 16 on the pulley and carrying expansion springs 17 which abut against the blocks 14: and against shoulders 15 on the rods. Nuts 18 on the free ends of the rods retain the blocks in place thereon. A. cam plate 19 is adjustably secured on the pulley 13 by bolts 20 and is provided with concentrically disposed cams 21. A ring 22 is slidably mounted on the boss 23 of the cross-arm and is provided with pins 2 1 which extend through lugs 25 on the arm and ride upon the cams 21. One or more springs26are fastened to the cross-arm and to the ring (Fig. 1) and hold pins 245 in contact with cams 21. The clutch control lever 27 is connected by link devices 28 to a clutch collar 29 slidably mounted on the shaft 8.

Any suitable device may be. employed to be operated by the ring 22 for indicating at the proper time that the burning-in or running-in operation has been completed, and when thus warned the operator will immediately stop the machine, thereby insuring uniformity of the work. Since the machine is used both for burning-in and running-in it is desirable to provide an indicator device which may be easily and quickly set for either operation but it two machines are used, one for burning-in and the other for running in, some other form ot' indicator device may be employed. if desired.

In Figs. 1, 2 and 9 of the drawing. 1 have shown a simple electric bell indicator which comprises an alarm bell 30, a battery 31, a spring-pressed contact 32 adapted to be engaged by the clutch control lever 27, and another spring-pressed contact adapted to be engaged by the ring 22.

,A conductor 34: leads from the contact 32 through the battery 31 and bell 30 to the contact 33. The contacts and the rods carrying same are insulated from the frame on which they are mounted in any suitable posi tion and in any suitable manner. The con tact 33 is preferably mounted in a brass sleeve 35 which is enclosed within an insulating sleeve 35 surrounded by a steel sleeve 36 which is supported in the bracket 36. The contact rod and the sleeves are secured together to move conjointly for adjusting the contact 33. The bracket has an opening 37 to accommodate the toothed segment 38 which meshes with a rack 37 on the sleeve 36 and is operated by a handle lever 38 mounted on the bracket. This lever carries a spring-pressed detent 39 which is adapted to engage the notched segment 39 to lock the lever and the contact 33 in predetermined fixed positions. In the drawings B indicates the burning-in position of the lever, B the running-in position and O the position of the lever when contact 33 is thrown-out of operative position.

In practice the machine stands in normal position, as indicated in Figs. 1 and 2 with the lever 27 separated from contact 32' and setting lever 38 in out position with contact 33 separated from ring 22, the ring being projected outward by earns 21 and pins 24:, and springs 17 are expanded to hold the cross arm and the pulley in rest position. indicated in Fig. 3. When an engine shaft has been coupled up to shaft 8 for the burning-in operation and power applied to the pulley 13, setting lever 38" is thrown to the burning-in position and control lever is operated to throw-in the clutch. The contact 32 is located a distanc from control lever so that the indicator cir: .1 will not be closed until at or about the completion of the whole throwing-in stroke of the control lever and before the circuit is thus closed the clutch members will be suiiiciently engaged to revolve the pulley relatively to the cross arm from the position shown in Fig. 3 to that shown in l. During this movement of the pulley relative to the cross arm the cams 21 will travel beneath pins 24 and permit springs 26 to pull ring 22 inwardly away from contact 33. l fhen this contact 33 is adjusted for the burning-in operation it will engage ring 22 but the circuit will not be closed because control lever 27 does not engage contact 32 until after the clutch has been sufficiently engaged to cause the relative movement of the cross arm and pulley, indicated in Figs. 3 and d, during which pins 2-; will travel down cams 2i and permit springs 26 to pull the ring 22 away from the contact When the members of the clutch begin to lock, the power applied through the pulley will be resisted by the load through the clutch and the cross arm keyed on the sleeve ll of the clutch so that for an instant the 1? they will travel relatively to the cross arm and compress the springs 17 The construction and arrangement are such that blocks 14 will engage abutments l5 on the rods 15 with a decided blow which will overcome the dead load on the crossarm. Meantime the springs have, in, effect, stored up power to yieldingly impart the rapid movement required from the pulley to the cross-arm. The pulley is revolved at a comparatively high rate of speed and with my improved structure the shock of the dead load on the cross-arm is greatly overcome by the manner in which the poweris con.- municated to the load. This operation is very similar to that of removing a nut which has become frozen to a bolt. A steady pull on a wrench applied to the nut may fail to loosen the nut but if, in addition to that pull. the wrench is struck with a hammer or other tool the nut will almost nvariably be loosened to permit its removal. In my present invention the springs 17 under compression provide the steady pull on the load and when blocks i l strike abutments 15" an initial impulse is given to the cross-arm which overcomes the dead weight oi the load. Springs of such length and tension are preferably provided which will permit blocks 1% to engage abutments 15 before the springs have been fully compressed. in the normal operation of the machine so constructed the springs will be compressed, blocks i l will strike abutments l5. and the cross-arm will begin to turn while the pulley is moving relatively to the cross-arm from the position shown in Fig. 3 to the position shown in Fig. 4;.

As the burning-in operation continues to completion and the load resistance decreases springs 17 will gradually expand and permit relative movement of the pulley and crossarm until the pins 2 1 have traveled up on the earns 21 sufliciently to move ring 22 into engagement with contact 33, thereby closing the bell circuit and sounding the alarm which notifies the operator that the burningin operation has been completed. I prefer inc arm 40 (Fig. 7).

measure that the burning-in operation should be completed before the springs have fully expanded to the position indicated in Fig. 3 because I desire to use this machine not only for burning-in but also for runningdn bearings, during which the ring will have a greater range of movement. /V hen the engine has been completely assembled ar L again arranged in the machine with its shaft coupled to shaft 8 for the running-in operation, the setting lever is thrown to proper position adjusting contact 33 somewhat farther from ring 22 than for the burning-in operation. During this operation the engine shaft runs in oil and much freer than during the burning-in operation and it is desirable that the ring 22 should have a greater range of movement before engaging contact 33 to sound the alarm indicating completion of the operation.

Instead of the alarm indicator hereinbefore described I may provide any other suitable form of indicator such as an adjustable The completion of the operation may be indicated with this form of device when the ring 22 registers peripherally with the arm 5 .0 and for this purpose the ring is preferably provided with a flange 11. Or the ring 22 may be arranged, as shown in Fig. 8, to operate a pivoted pointer 42 which travels over a dial plate 33 suitably marked to indicate the completion of each operation. An indicator arm 43 may be mounted on sleeve 36 to be adjusted therewith relative to ring 22 for use in conjunction with the bell alarm vor in substitution therefor. The operator can easily observe when the ring registers with the arm, thereby indicating completion of the operation.

It will be observed that my invention safeguards the operation of a machine of this character so that bearings may be burned,- in and run-in with uniform results. The completion of each operation is automatically indicated and the operator is only required to heed the signal and throw out the clutch. This not onl eliminates the necessity for providing highly skilled labor for such machines but it insures uniformity of work which is highly desirable.

I am aware that changes in the form and proportion of parts and in the details of construction of my invention be made without departing from the spirit or sacrificing the advantages thereof and I therefore reserve the right to malre all such changes as fairly fall within the scope of the ap pended claims.

ll claim:

1. In a machine of the character de scribed, the combination of a bed frame, a shaft mounted therein, a driving pulley on the shaft, a clutch, spring connections between the pulley and clutch, and means comprising a cam revolving with the pulley and a device moving axially of the shaft to indicate when the load on said shaft has been relieved.

2. In a machine of the character described, the combination of a bed frame, a shaft mounted therein, a driving pulley on the shaft, clutch, spring connections between the pulley and clutch, and means comprising a cam revolving with the pulley and a device operated by said cam and moving axially of the shaft to indicate when the load on said shaft has been relieved.

3. In a machine of the character described, the combination of a, bed frame, a shaft mounted therein, a driving pulley on the shaft, a clutch, spring connections between the pulley and clutch, and means comprising a cam rigid with the pulley, an in dicating device movable axially of the shaft and revoluble with the pulley, and means interposed between the cam and said device to move the device axially in a straight line when the cam revolves relatively to said device.

4. In a machine of the character described, the combination of a bed frame, a shaft mounted therein, a clutch on the shaft and having an elongated sleeve, a pulley loosely mounted on said sleeve, a cross-arm rigidly mounted onv said sleeve and having its ends yieldingly connected with said pulley, and means operated by the pulley and cross arm to indicate when the load on said shaft has been relieved.

5. In a machine of the character described, the combination of a bed frame, a shaft .mounted therein, a driving pulley loosely mounted on the shaft, a clutch, a cross-arm rigidly connected to said clutch, rods pivotally connected to the pulley, blocks pivotally mounted on the ends of said crossarm and slidably engaged with said rods,

stops for holding the blocks on the rods, springs on the rods between the blocks and the connections of the rods with the pulley, and means operated by the pulley and cross arm to indicate whenvthe load on said shaft has been relieved.

6. In a machine for burning-in engine bearings, the combination of a bed frame, a shaft mounted therein, a driving pulley loosely mounted on tne shaft, a clutch, a cross armrig connected to said clutch, yielding connections between the cross-arm nd the pulley adapted to be compressed to impart movement from the pulley to the rose-arm and through the clutch to the s and adapted to expand when the load or, he shaft is relieved, and means for'au- 'tomatically indicating to the operator when loosely mounted on the shaft, a clutch, a cross-arm rigidly connected to said clutch and yieldingly connected to said pulley, a cam on the pulley, an electric alarm circuit, and means engaged with said cross-arm and adapted to be operated by said cam to close said circuit and sounc an alarm.

8.111 a machine of the character described, the combination of abed frame, a shaft mounted therein, a pulley loosely mounted on the shaft, a clutch, a cross-arm rigidly connected to said clutch and yieldingly connected with said pulley, cams on the pulley, pins slidably mounted in said cross-arm and engaged with said cams, and an indicating ring rigid with said pins and slidable therewith.

9. In a machine for burning-in engine bearings, the combination of a bed frame, a shaft mounted therein, clutch having a sleeve, a driving pulle loosely mounted on the sleeve, a cross-arm rigidly connected to said sleeve, yielding connections between the ends of the cross-arm and the pulley adapt ed to be compressed when a load is on the shaft to communicate motion from the pulley through the crossarm and clutch to the shaft and adapted to expand when the load on the shaft is relieved, a plate on the pulley, cams on said plate, an electric alarm circuit, and a device adapted. to be operated by said cams to clos the circuit and sound an alarm when the operation is completed.

10. In a machine of the character described, the combination of a bed frame, a shaft mounted therein, a driving pulley loosely mounted on the shaft, a clutch, a cross-arm rigidly connected to said clutch and yieldingly connected to said pulley, a cam on the pulley, and means movable with and also relatively to said cross-arm and adapted to be operated by said cam to indicate when the load on the shaft is relieved.

11. In a machine of the character described, the combination of a bed frame, a shaft mounted therein, a driving pulley loosely mounted on the shaft, a clutch, a cross-arm rigidly connected to said clutch and yieldingly connected to said pulley, a cam on the pulley, an indicating ring mounted on the cross-arm to revolve therewith, and means interposed between said ring and cam for moving said ring axially of the shaft and independently of the crossarm.

12. In a machine of the character described, the combination of abed frame, a shaft mounted therein, pulley loosely mounted on the shaft, a clutch, a cross-arm rigidly connected to said clutch and yieldingly connected to said pulley, oppositely disposed concentric cams on the pulley, an indicating ring mounted on the cross-arm, and pins rigid with the ring and extending through the cross-arm and engaging said sins to cause said ring to revolve with the cross-arm and to impart movement to the ring axially of the shaft.

13. In machine of the character described, the combination of a bed frame, a shaft mounted therein, a driving pulley on the shaft, a clutch, a cross-arm rigidly connected to said clutch and yieldingly connected to said pulley, an electric alarm circuit, a ring mounted on and revoluble with but independently of the cross-arm, a contact in said electric circuit, a clutch control lever adapted to close said contact, and another contact in said circijiit adapted to be engaged by said ring to close the circuit and sound an alarm.

14. In a machine for burning-in engine bearings, the combination of a bed frame, a shaft mounted therein, a cross-arm adapted to be connected with said shaft, a driving pulley for imparting movement through said cross-arm to the shaft with an initial hammer blow, and a device adapted to be operated by relative movement of the pulley and cross-arm for indicating completion of the operation.

15. In a machine for burning-in engine bearings, the combination of a bed frame, a shaft mounted therein, a cross-arm adapted to be connected with said shaft, a driving pulley for imparting movement through said cross-arm to the shaft with an initial hamme blow, an indicator device, and a e device adapted to be operated by relative movement of the pulley and crossarm to cooperate with said indicator device and indicate completion of the operation.

16. In a machine for burning-in engine bearings, the combination of a bed frame, a shaft mounted therein, a cross-arm adapted to be connected with said shaft, a driving pulley for imparting movement through said cross-arm to the shaft, an indicator device having an adjustable element, means for adjusting said element, and a movable device adapted to be operated by relative movement of the pulley and cross-arm to cooperate with said indicator device and indicate completion of the operation.

17. In a machine for burning-in engine bearings, the combination of a bed frame, a shaft mounted therein, a cross-arm adapted to be connected with said shaft, a driving pulley for imparting movement through said cross-arm to the shaft, an indicator device having an adjustable element, a lever for adjusting said element, and a movable device adapted to be operated by relative movement of the pulley and cross-arm to cooperate with said element and indicate completion of the operation.

18. In a machine of the character described, the combination of a bed frame, a shaft mounted therein, a cross-arm adapted to be connected with said shaft, 2. driving inseam pulley for imparting movement through said cross-arm to the shaft, means for imparting the movement of said. pulley to said cross-arm in the form of an initial blow to overcome a dead load on the shaft, and means operated by the pulley and cross arm to indicate when the load on said shaft has been relieved.

19. In a machine of the character described, the combination of a bed frame, a shaft mounted therein, a cross-arm adapted. to be connected with said shaft, a driving pulley for imparting movement through said cross-arm to the shaft, means interposed between the cross-arm and pulley for first applying power from the pulley by means of an initial blow upon the cross-arm to overcome a dead load on the shaft, and means operated by the pulley and cross arm to indicate when the load on saidshaft has been relieved.

20. In a machine of the character de-' scribed, the combination of a bed frame, a shaft mounted therein, a cross-arm adapted to be connected with said shaft, a driving pulley for imparting movement through said cross-arm to the shaft, means interposed between the cross-arm and pulley comprising an abutment on the cross-arm and a block on the pulley adapted to engage said abutment for applying power from the pulley to the cross-arm initially by means of a blow to overcome a dead load on the shaft, and means operated by the pulley and cross arm to indicatewhen the load on said shaft has been relieved.

'21. In a machine of the character described, the combination of a bed frame,,a I

shaftmounted therein, a cross-arm adapted to be connected with said shaft, a driving pulley for imparting movement through said cross-arm to the shaft, means interposed between the cross-arm and pulley comprising an abutment on the cross-arm, a block on the pulley adapted to engage said abutment, and a spring interposed between the pulley and cross-arm for applying power from the pulley to the cross-arm initially by means of a blow and then yieldingly, and means operated by thepulley and cross arm to indicate when the load on said shaft has been relieved. r

22. In a machine for burning-in engine bearings, the combination of a bed frame, a

shaft mounted thereon, a driving member and a driven member mounted on said shaft but movable relatively to said'driving member, means whereby movement is imparted to said driven member from said driving member with a sudden initial impact followed by a gradually diminishing torque, and means operated by the relative movement of said members for indicating completion of the operation.

FRANK DANIELSON. Witnesses:

BENTON GARVIN, A. P. CRAWFORD.

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