US979918A

US979918A - Gearing for drilling-machines.

Info

Publication number: US979918A
Application number: US51662409A
Authority: US
Inventors: John S Barnes; John R Vincer
Original assignee: WF and John Barnes Co
Current assignee: WF and John Barnes Co
Priority date: 1909-09-07
Filing date: 1909-09-07
Publication date: 1910-12-27
Anticipated expiration: 1927-12-27

Description

J. S. BARNES & J. R. VINGER. GEABING FOR DRILLING MACHINES.

APPLICATION FILED SEPT. 7, 1909. 979,91 8. Patented Dec. 27, 1910.

3 SHEETS-SHEET l.

J. S. BARNES & J. R. VINGER,

GEARING FOR DRILLING MACHINES. APPLICATION IILED SEPT. 7 1900.

979,918. Patented De0.27,1910.

a snare-sum 2.

F M: J llll lmilll I ilk?! J. S. BARNES & J. R. VINGER.

GEARING FOR DRILLING MACHINES. APPLICATION IILED SEPT. 7, 1909.

Patented Dec.27,1910.

3 SHEETS-SHEET 3.

THE NORRIS PETERS ca, WASHINGTON, n. c.

which supports a drill spindle.

tinirnn s'rn'rns rnrnn'r carton.

JOHN S. BARNES AND JOHN R. VINCER, OF ROCKFORD, ILLINOIS, ASSIGNORS TO W. F. & JOHN BARNES COMPANY, OF ROCKFORD, ILLINOIS, A CORPORATION OF ILLINOIS.

GEARING FOR DRILLING-MACHINES.

Specification of Letters Patent.

Application filed September 7, 1909.

T 0 all whom it may concern:

Be it known that we, JOHN S. BARNES and JOHN R. VINOER, citizens of the United States, residing at Rockford, in the county of Winnebago and State of Illinois, have invented certain new and useful Improvements in Gearing for Drilling-Machines and the Like, of which the following is a specification.

The object of this invention is to construct a drilling machine in which the drill spindle is rotated by a belt connection with a counter shaft, the drill spindle and countershaft being each provided with cone pulleys, and pulleys over which the belt passes to give the proper tension and alinement to the belt.

In the accompanying drawings Figure 1 is a side elevation of a drilling machine containing our improvements. Fig. 2 is a plan view. Fig. 3 is a section on dotted line a Fig. 1. Fig. 4 is a vertical section on dotted line b Fig. 2. Fig. 5 is a section on dotted line 0 Fig. 1. Fig. 6 is a section on dotted line 65' d Fig. 1.

The column 1 has an overhanging head 2 A cone pulley comprising the two steps 3 and 4 is supported by the overhanging head, and with which the drill spindle 5 has a vertically sliding engagement. An arm 6 has a sliding engagement with the column 1, and-supports a sleeve 7 through which the drill spindle passes.

A table 16 has an adjustable connection with the column 1. To the column 1 is bolted a bracket 17 which supports a driving-shaft 18, to this driving-shaft is fixedly connected a tight pulley 19, and a loose pulley 20 is supported by this shaft. A cone pulley comprising the two steps 21 and 22 is fixedly connected to this drivingshaft. The face 23 of the step 21 next the step 22 is cone-shape, in order that the driving belt will better transfer from the smaller step 22 onto the larger step 21. From the upper end of the column 1 extends a bracket 24 which supports a bearing 25.

A rod has a section 26 located in the bearing 25 in a manner to rotate therein. This rod has a crank portion 27 and an ofiset section 28 extending parallel with the section 26. The section 26 of this rod is held against lengthwise movement by the collar 29 located adjacent to one end of the bearing 25, and a worm wheel 30 located adjacent the other end of the bearing. The collar and worm wheel are fixedly connected to the section 26 of the rod.

A bearing 31 extends from the bracket 24, and a shaft 32 is supported by this bracket, a worm 33 is secured to one end of the shaft 32 and meshes with the wormwheel 30. A hand wheel 34 is secured to the other end of this shaft 32. By means of the hand wheel 34 the rod can be rotated and through the worm and worm wheel connection the rod will be held at rest in any position into which it may be adjusted. Owing to the crank portion 27 of the rod, the section 28 thereof will swing in a circle.

A sleeve 35 is mounted on the section 28 of the rod in a manner to reciprocate thereon. To the sleeve 35 are pivoted two

yokes

36 and 37, and pulleys 38 and 39 are supported by the yokes. A spring 40 surrounds the crank portion 27 of the rod, one end resting against the worm wheel 30 and the other end against the sleeve As shown in the drawings, a belt 41 is passed around the step 3 of the cone pulley. driving the drill spindle, over the pulleys 38 and 39 and around the step 21 of the cone pulley attached to the driving-shaft. The driving-shaft 18 is rotated by a belt connecting the pulley 19 with the main line shafting or other motive power. The spring 40 exerts its force against the sleeve 35 which will tend to force it along the section 28 of the rod, thereby acting as a belt tightener. When the belt is in the position shown in the drawings the section 28 of the rod will be in the position shown in dotted lines Fig. 3, which is to one side and below the center of the section 26 of the rod, and over the step 3 of the cone pulley connected to the driving-shaft. The pulleys 38 and 39 supported by the

yokes

36 and 37 will adapt themselves so that the belt will be in proper I driving the drill spindle, to the upper step 4 thereof, and as this step is of less diameter than the step 3, slack will be had in i this step 22 is smaller than the step 21, the

spring 40 will move the sleeve 35 carrying the pulleys 38 and 39 farther along the section 28 of the rod, and take up the slack. By moving the section 28 of the rod so that it will occupy the position shown by dotted lines 44 Fig. 3, the belt may be shifted from the step 4 of the cone pulley driving the drill spindle onto the step 3 of the same cone-pulley, and as this step 3 is larger than the step 4, thespring 40 will yield and allow the belt to extend over the larger pulley. By the movement of the rod in the four positions indicated on Fig. 3, four different speeds will be imparted to the drill spindle. After the belt has been shifted, the sleeve 35 is held against movement in connection with the section 28 of the rod by the setscrew 45, in order that the pulleys supported by the sleeve will not yield under the strain transmitted by the belt. The cone-pulley connected with the counter shaft is held against bodily movement in the lengthwise direction of the shaft, and the belt is transferred from one step of the cone-pulley onto the other step by the oscillations of the rod carrying the sleeve supporting the swiveled pulleys 38 and 39.

We claim as our invention:

1. In mechanism of the character described, the combination with driving and driven members, of a power-transmitting belt connecting the same, a rotatable crank member, means for rotating and holding the crank member in different positions, and

a belt-engaging element mounted on the crank member.

2. In mechanism of the character described, the combination with driving and driven members, of a power-transmitting belt connecting the same, a support, a shaft journaled on the support and having an offset crank element, and a belt-engaging element mounted on the crank element.

3. In mechanism of the character set forth, the combination with a supporting frame, of driving and driven members thereon, a belt connecting the members, a

v shaft having one end journaled on the suportin frame and havin its other end offset, and a belt engaging pulley carried by the offset end of the shaft.

4. In mechanism of the character disclosed, the combination with a supporting frame, of driving and driven members there- 'on, a belt connecting the members, a shaft having one end journaled on the supporting frame and having its other end offset, a belt engaging pulley carried by the offset end of the shaft, a worm wheel carried by the shaft, and an actuating and holding worm meshing with the worm wheel.

5. In mechanism of the character set forth, the combination with driving and driven members, of an endless belt connecting the same, a supporting rod, a sleeve slidable on the rod, a pair of idler pulleys swiveled upon the sleeve, and a coiled spring surrounding the rod and bearing against the sleeve.

6. In mechanism of the character set forth, the combination with a frame, of a support rotatably mounted thereon, driving and driven members, a power-transmitting belt connecting the members, and a device engaging the belt between the driving and driven members and adjustably mounted on the rotatable support.

7. In mechanism of the character set forth, the combination with a frame, of a support rotatably mounted thereon and having a crank portion, driving and driven members, a power-transmitting belt connecting the members, and a device engaging the belt between the driving and driven members and capable of reciprocatory movement on the crank portion.

8. In mechanism of the character set forth, the combination with a frame, of a support rotatably mounted thereon, driving and driven members, a power-transmitting belt connecting the members, a device en,- gaging the belt between the driving and driven members and adjustably mounted on the rotatable support, and means for -ad justably securing said device on the support. to maintain the belt taut.

9. In mechanism of the character set forth, the combination with a supporting frame, of a support rotatably mounted thereon and having a crank portion, driving and driven members, a power transmitting belt connecting the members, a device engaging the belt between the driving and driven members and capable of reciprocatory move ment on the crank portion of the support, and a spring bearing against the device for moving it on the support.

10. In mechanism of the character set forth, the combination with a supporting frame, of angularly disposed driving and driven members journaled thereon, a belt connecting the driving and driven members, a rod rotatably mounted on the frame and having a crank portion, a sleeve slidable on the crank port-ion, idler pulleys swiveled on the sleeve and engaging the belt, a spring coiled upon the rod and bearing against the sleeve, a worm wheel carried by the rod, and an actuating shaft having a worm engaging the worm wheel.

11. In mechanism of the character disclosed, the combination with angularly disposed driving and driven shafts, of a cone pulley carried by each shaft, a belt connection between the pulleys, a movable guide pulley engaging the belt between the cone pulleys, a laterally shiftable support for the guide pulley, means for shifting the support to cause the' guide pulley to shift the belt to different positions on a cone pulley, and yielding means for automatically preventing slack in the belt when so shifted.

12. In mechanism of the character dis closed, the combination with angularly disposed driving and driven shafts, of a cone pulley carried by each shaft, a belt connection between the pulleys, a movable guide pulley engaging the belt between the cone pulleys, a laterally and longitudinally shiftable support for the guide pulley, means for shifting the support in one direction and holding it in different positions to cause the guide pulley to shift the belt on one of the cone pulleys, and yielding means bearing against the support to automatically shift said support in another direction to prevent slack in the belt when shifted.

13. In mechanism of the character dis closed, the combination with angularly disposed driving and driven shafts, of a cone pulley carried by each shaft, an endless belt connecting the pulleys, a pair of guide pulleys, a support for the guide pulleys, means for shifting the support to cause the belt to shift on either cone pulley without shifting on the other cone pulley, and means for automatically moving the support to prevent slack of the belt when shifted.

14. In a drilling machine, the combination of a frame, a spindle, a pulley connected with the spindle, a counter-shaft, a pulley connected with the counter-shaft, a belt connection between the pulleys, a support, a sleeve slidable on the support, two pulleys supported by the sleeve over which the belt passes, and a spring acting against the sleeve to hold the belt taut.

15. In a drilling machine, the combination of a frame, a spindle, a pulley connected with the spindle, a counter-shaft, a conepulley connected with the counter-shaft, a belt connecting the pulley on the spindle and the cone-pulley, an oscillatory support, two pulleys suspended from the support, and

'means for oscillating the support to move the pulleys to locate the belt over either of the steps of the cone-pulley and hold it when adjusted.

16. In a drilling machine, the combination of a frame, a spindle, a pulley connected with the spindle, a counter-shaft, a conepulley connected with the counter-shaft, a belt connecting the pulley on the spindle and the cone-pulley, an oscillatory support having a cranked extension, means for oscillating thesupport and holding it when adjusted, two swiveled pulleys suspended from the cranked portion of the support over which the belt passes.

17 In a drilling machine, the combination of a frame, a spindle, a pulley connected with the spindle, a counter-shaft, a conepulley connected with the counter-shaft, a belt connecting the pulley. on the spindle and the cone-pulley, an oscillatory support having a cranked extension, means for oscillating the support and holding it when adjusted, a sleeve mounted on the extens1on, a spring acting on the sleeve, and two swiveled pulleys supported by the sleeve over which the belt passes.

18. In a drilling machine, the combination of a frame, a spindle, a pulley connected with the spindle, a counter shaft, a cone pulley connected with the counter-shaft, a belt connecting the pulley on the spindle and the cone-pulley, an oscillatory support having a cranked extension, a worm wheel connected to the support, a worm meshing with the worm wheel, means for turning the worm, a sleeve mounted on the extens on, a spring. action on the sleeve, two swiveled pulleys supported by the sleeve over which the belt passes, and means for clamping the sleeve to its support.

In testimony whereof we have hereunto set our hands in presence of two subscribing witnesses.

JOHN S. BARNES. JOHN R. VINOER.

Witnesses:

E. J. BRYDEN, A. O. BEHEL.