US1003486A

US1003486A - Brush-boring machine.

Info

Publication number: US1003486A
Application number: US60520211A
Authority: US
Inventors: Peter Meyer
Original assignee: American Oil & Supply Co
Current assignee: American Oil & Supply Co
Priority date: 1911-01-28
Filing date: 1911-01-28
Publication date: 1911-09-19
Anticipated expiration: 1928-09-19

Description

. P. MEYER.

BRUSH BORING MAGHINE. APPLICATION FILED (11111.28, 1911.

Patented Sept. 19, 1911.

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P. MEYER.

BRUSH BORING MACHINE.

APPLIOATION FILED JAN. 28, 1911.

1,003,486. Patented Sept. 19,1911.

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BRUSH BORING MACHINE.

Patented Sept. 19,1911.

APPLICATION FILED JAN. 28, 1911.

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PETER MEYER, 0F NEWARK, NEW JERSEY, ASSIGNOR T0 AMERICAN OIL & SUPPLY 00., OF NEWARK, NEW JERSEY, A CORPORATION OF NEW JERSEY.

BRUSH-BORING MACHINE.

ooaase.

To all whom it may concern:

Be it known that I, PETER MEYER, acitizen of the United States, and a resident of Newark, in the county of Essex and State of New Jersey, have invented certain new and useful Improvements in Brush-Boring Machines, of which the following is a specification.

In the making of jewelers brushes, the core or body of the brush is usually in the formof a circular block of wood which is drilled around its circumference to receive the tufts of bristles which form the brush proper. These holes in the brush block are usually made with a drill, the operations of positioning the block for the separate holes and feeding the drill into the block or vice versa, being accomplished by manually operated means. This makes the process a comparatively slow one, and also expensive, since the attention of an operator is constantly demanded.

It is the object of my invention to overcome all these various objections and to ac-- complish the drilling of the brush blocks wholly automatically.

To these ends my invention consists in its preferred form of a drill and a work holder, together wit-h automatic means for intermittently turning the work holder to present new faces of the work to the drill, and means for automatically advancing the drill toward the work in the periods of rest between the intermittent turning movements of the work holder. The specific means for performing these operations may vary but in a preferred form they consist of a cam shaft with a pair of cams thereon, connections from one of the cams for intermittently advancing the drill, and a pawl and ratchet device operated by connections from the other cam for intermittently turning the work holder.

Another feature of my invention resides in means for adjusting the work holder to regulate the angle or inclination of the holes to be bored and also the position of such holes on the work.

Various other objects and features of my invention will appear as the specification proceeds.

In the accompanying drawings I have illustrated several preferred embodiments Specification of Letters Patent. Patented Sept 19, 1911. Application filed January 28, 1911.

Serial No. 605,202.

of my invention but I would have it understood that various changes and modifications may be made therein without departing from the spirit and scope of the invention and I would also have it understood that the invention as a whole and the various features thereof may be employed wherever found useful and practical.

In the drawings: Figure 1 is a front elevation of a machine embodying my inven tion. Fig. 2 is a like view of the opposite side of the machine. Fig. 3 is an end View of the machine looking in the direction of the arrow in Fig. 2. Fig. 41 is a sectional view taken on the line 14: of Fig. 1. Fig. 5 is a sectional View taken on the line 5-5 of Fig. 1. Fig. 6 is a longitudinal sectional view of the pulley on the drill spindle to illustrate the fastening means therefor. Fig. 7 is a transverse sectional view of the same.

Like reference characters refer to like parts throughout the several views.

In the form of my invention which I have illustrated, the drill 1 is carried in a chuck o-r suitable holder 2 on the drill spindle 8, and the work or block 4 is carried by a suitable work-holder such as the spindle 5. The work-holder spindle 5 is preferably formed with a reduced portion 6 for frictional engagement with the bore 7 of the block. And for the purpose of properly holding the work in position upon the spindle, I prefer to use a clamping device such as the plate 8 adapted to have a bearing upon the top of the block, as shown, this clamping plate being carried by an arm 9. This arm is preferably pivoted at 10 in a post 11 to permit of its being swung up out of the way when a new block is being placed upon the spindle. A spring 12 is preferably employed for automatically holding the clamping plate in yielding engagement with the work. And the clamping plate has a swivel or universal connection 13 upon the end of the arm 9 to permit of its adjusting itself upon the top of the work. This swivel connection may be made between the end of an adjustable pin 14 carried in the arm and the clamping plate. The spring 12 permits the clamp to adjust itself to various lengths or blocks, and to permit of an even greater adjustment the post 11 is preferably adjustably secured at 15 in the end of an arm 16 projecting in a vertical direction with respect'to the drill. To accomplish this adjustment the bracket 17 is preferably carried in a member 21 which is adjustable in the guide-ways 22 on the base or support, and is held in adjusted position by means of a clamping I nut 23.

As it is sometimes desirable to bore the holes at a slant instead of at right angles, I have so mounted the work-holder that it is adapted for this adjustment also. This I have done by providing the bracket 17 with a journal or hub extension 24 journaled in the sleeve portion 25 of the member 21. For the purpose of clamping the bracket in adjusted relation, the sleeve portion 25 may be simply in the form of a split sleeve, as shown, which, by means of a clamping screw 26, serves to clamp the bracket 17 in adj usted position.

The means for automatically turning the work-holder may vary, but, as shown in the present instance, they consist of intermeshing bevel gears 27 and 28 on the work-holding spindle and angularly disposed shaft 29 respectively, together with a ratchet 30 on the end of shaft 29, a pawl 31 carried by an arm 32 for engagement with the ratchet, and connections from a cam to be described. The shaft 29 is journaled in the hub portion of the bracket 17 so as not to interfere with the rotat-ive adjustment of said bracket.

The cam for turning the work-holder is indicated at 33, this cam being carried by a cam shaft 34 which is suitably journaled as by being carried in a journal bracket 35 on the end of the drill head; The connections til from the said cam to the pawl and ratchet device consist in the present instance of a connecting rod 36 slidably engaged over the cam shaft and carrying a cam roll 37 for engagement with the cam, a rocking lever 38 to which the rod 36 is pivoted and a link 39 nivotally connected between the other end of the rocking lever and the arm 32 which carries the pawl. For the purpose of regulating the stroke of the pawl, this chain of connections is preferably made adjustable in some way, as by means of the slotted connection 40 between the rocking lever and the link 39. The cam shaft is of course driven by suitable means, such as a pulley 41.

In the present case the means for intermittently advancing the drill consists of a pivoted rocker arm 42 carrying a cam roll 43 at one end for engagement with an additional cam 44 in the cam shaft, and having a bearing at its opposite or upper end upon the end of the drill spindle. To reduce friction between the end of the drill spindle and the rocker arm, either the spindle or the arm, or both, may be provided with a ball 45 or like thrust bearing. The rocker arln thus imparts the inward or feeding movement to the drill, and a spring 46 may be utilized for accomplishing the return movement of the drill, the spring for this purpose being preferably coiled upon the proj ecting end of the drill spindle and confined between a shoulder 47 on the end of the spindle, and a washer 48, which washer may and preferably is a ball-contained thrust hearing.

A pulley 49 or like driving element imparts the necessary rotative movement to the drill spindle, and this pulley is so secured upon the drill spindle as to permit of the in and out reciprocating movement of the spindle. To allow for this, I have devised anovel form of fastening, consisting of a key-pin 50 working in a keyway 51 on the interior of the pulley. This key-pin is placed by bringing the opening 52 in the pulley into alinement with a hole in the drill spindle. When the pin is so inserted, the pulley or the spindle is shifted so as to bring the openings out of register, the keypin then sliding into the key-way provided for the same. The key-way extends longitudinally of the pulley from the transverse opening therein. The normal reciprocating movement of the spindle is insufficient to bring the openings in the spindle and pulley into register so that the key will slide in the key-way and be held therein.

In the operation of the machine, the parts are so timed that the drill will be fed forward to engage the work during the periods of rest between the intermittent turning movements of the work-holder. The ratchet disks are made interchangeable so that any number of openings may be bored in the blocks. The various other parts of the machine are adjustable so that blocks of different sizes and shapes may be bored and the holes may be bored at any desired angle or in any desired relation.

As it is, for various reasons, sometimes desirable to change the work-holding spindle, the spindle may be provided with a removable mandrel 53, as best shown in Fig. 4. To facilitate the removal of this mandrel, the screw 54 may be engaged in the end of the spindle, this screw acting when turned to expel the mandrel frOm its socket in the spindle. In order to prevent any backward or retrograde movement of the ratchet, a

holding device of some sort may be em- 1'? ployed, such as the spring 55, which has a bearing upon the ratchet and acts as a brake to hold it against any backward movement.

What is claimed, is:

1. In a boring machine, a drill, a support longitudinally adjustable toward and away from the drill, a member adjustable vertically on said support and provided with a sleeve extending transversely to the axis of the drill, a bracket having a hub extension j ournaled in the sleeve and circumferentially adjustable therein toward and away from the drill, a rotatable work holder carried in the bracket at right angles to the axes of the drill and hub extension, a shaft extending through the hub extension concentric with the center of its circumferential adjustment, intermeshing gears between the shaft and work holder, a ratchet on the end of the shaft, a pawl adapted to engage with aid ratchet and loosely mounted on the hub extension so as to permit independent adjustment of the bracket both longitudinally, vertically and circumferentially, actuating means for said pawl, and adjustable con nections between the actuating means and paw].

2. In a boring machine, a drill, a support longitudinally adjustable toward and away from the drill, a member adjustable vertically on said support and provided with a sleeve extending transversely to the axis of the drill, a bracket having a hub extension journaled in the sleeve and circumferentially adjustable therein toward and away from the drill, a rotatable work holder carried in the bracket at right angles .to the axes of the drill and hub extension, a shaft extending through the hub extension concentric with the center of its circumferential adjustment, intermeshing gears between the shaft and work holder, and means for intermittently turning the shaft.

3. In a boring machine, a drill, a support longitudinally adjustable toward and away from the drill, a member adjustable vertically on said support and provided with a sleeve extending transversely to the axis of the drill, a bracket having a hub extension journaled in the sleeve and circumferentially adjustable therein toward and away from the drill, a rotatable work holder carried in the bracket at right angles to the axes of the drill and hub extension, a shaft extending through the hub extension concentric with the center of its circumferential adjustment, intermeshing gears between the shaft and work holder, means for intermittently turning the shaft, a work clamp car ried by the adjustable bracket, and means for adjusting said work clamp with respect to the work on the work holder independently of the adjustment of the bracket.

4c. In a drilling machine, a support, a bracket having a hub portion journaled in the support, means for securing the bracket in adjusted position, a shaft journaled in the hub portion of the bracket, a workholding spindle ournaled in the bracket, intermeshing gears on the shaft and spindle, a ratchet on the outer end of the shaft, a pawl for engagement with said ratchet, means for actuating the pawl so that through the connections described the work will be intermittently rotated, a drill, and means for intermittently advancing said drill toward the work.

5. In a drilling machine, a support, a bracket having a hub portion journaled in the support, means for securing the bracket in adjusted position, a shaft journaled in the hub portion of the bracket, a workholding spindle journaled in the bracket, intern'zeshing gears on the shaft and spindle, a ratchet on the outer end of the shaft, a pawl for engagement with said ratchet, a

,cam, connections from said cam to the pawl for actuating the same to intermittently rotate the ratchet, a drill, a second cam, and

connections from said second cam for intermittently advancing the drill toward the work.

6. In a machine for boring brush blocks, a drill, a support adjustable toward and away from the drill, a bracket adjustable vertically on the support, said bracket also having a circumferential adjustment with respect to the drill, a work-holding spindle journaled in the bracket, means for intermittently turning the spindle, and means for intermittently advancing the drill toward the spindle.

7. In a machine of the character set forth, a support, a bracket rotatably adjustable on said support, a work-holding spindle rotatably mounted in said bracket, a shaft extending through the support and bracket concentric with the center of adjustment of the bracket, gears on the shaft and workholding spindle adapted to intermesh in any adjusted position of the bracket, and means for rotating the shaft.

8. In combination, a support, a bracket revolubly mounted on said support, means for securing the bracket in adjusted position upon the support, a work-holding spindle journaled in the bracket, a' shaft journaled in the bracket concentric with its axis of revolution and at an angle to the spindle, intermeshing gears on the shaft and spindle, means for intermittently rotating the shaft, and a drill operatively related to the work on the spindle.

9. In a drilling machine, a support, a bracket having a hub portion journaled in the support, means for securing the bracket in adjusted position, a shaft journaled in the hub portion of the bracket, a work-holding spindle journaled in the bracket, intermeshing gears on the shaft and spindle, a

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ratchet on the outer end of the shaft, a pawl for engagement with said ratchet, means for actuating the pawl so that through the connections described the work will be intermittently rotated, and a drill operatively related to the work carried by the spindle.

10. In a boring machine, a drill, a support, a member adjustable vertically on said support and provided with a sleeve extending transversely to the axis of the drill, a bracket having a hub extension j ournaled in the sleeve and circumferentially adjustable therein toward and away from the drill, a rotatable work holder carried in the bracket at right angles to the axes of the drill and hub extension, a shaft extending through the hub extension concentric with the center of its circumferential adjustment, intermeshing gears between the shaft and work holder, and means for intermittent-1y turning the shaft.

11. In a machine of the character set forth, a support, a bracket rotatably adjustable on said support, a work-holding spindle rotatably mounted in said bracket, an adjustable clamp carried by the bracket for holding the work upon the spindle, a shaft extending through the support and bracket concentric with the center of adjustment of the bracket, gears on the shaft and workholding spindle adapted to interinesh in any adjustedposition of the bracket, means for rotating the shaft, and a drill operatively related to the work on the spindle.

Signed at Newark in the county of Essex and State of New Jersey this twenty-fifth day of January A. D. 1911.

PETER MEYER.

lVitnesses JEROME T. CONGLETON, JOHN A. MATTHEWS.

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