US963986A - Combination drill and valve-grinder. - Google Patents

Description

P. O. BLANCHARD. COMBINATION DRILL AND VALVE GRINDER.

APPLICATION FILED JAN. 20, 1910.

Patented July 12,1910.

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FREDERICK C. BLANCI-IARD, F BRIDGEPORT, CONNECTICUT, ASSIGNOR TO THE ASH- CROFT MANUFACTURING COMPANY, OF BRIDGEPORT, CONNECTICUT, A CORPORA- TION OF CONNECTICUT.

COMBINATION DRILL AND VALVE-GRINDER.

Specification of Letters Patent.

Patented July 12, 1910.

, To all whom it may concern:

Be it known that I, FREDERICK O. BLAN- CHARD, a citizen of the United States, and resident of Bridgeport,inthe countyof Fairfield and State of Connecticut, have invented new and useful Improvements in Combination Drills and Valve-Grinders, of which the following is a specification.

My invention relates to the construction of tools or machines in the class of which breast drills are a typical example and consists of improvements whereby a tool or machine of this character is made capable of performing several functions or modifications of function selectively by means of simple adjusting devices. v t

In particular, my invention consists in improvements in tools of this classby which the same tool or machine may perform alternately the functions of the ordinary breast drill, reversible ratchet drill, or" valve grinder; that is to say, by means of certain adjustments presentlyto be-described continuous rotation vof the driving gear may cause a continuous rotation of the tool-mow ing shaft or holding member; or, if desired, an oscillatory or reversing rotation of the tool holding member; or by an oscillatory or baclcand-forth movement of the driving gear, may operate as a ratchet drill in either direction. I

Furthermore, the specific mechanism with which I illustrate my invention comprises improvements which insure compactness, strength, durability, and ease of operation and adjustment.

illustrate an example of my invention,

' Figure 1 is an elevation, partly in section, .of a comb natlon breast drill and valve grinder Fig. 2 is a cross sectional view taken along the line 2-2 of Fig. 1; and Fig. 3 is a detail which shows the pawl beam which forms a part of the tool or machine shown in Fig. 1.

The stock orframe of the tool, marked S, consists in part of a rectangular framework S which embraces the principal mechanically operated parts of the tool or machine.

.in 's t '25 at either end of the rectan ular b 7 b This rectangular framework is stiff and amply able to sustain all'the stresses which may be brought to bear upon it in course of. operation. A shaft T is mounted in the bear framework S and is thus provided with ample support. Between the bearings t, t and also mountedin the framework S is the driving gear G shown as the bevel gear which is secured to and driven by the crank M.

Loosely mounted upon the shaft T and meshing with-the driving gear G are the two bevel pinions P, P. These pinions are provided withcircular internal ratchets J, J. The ratchet teeth of the ratchet J are opposed in operative direction to those of the ratchet J. In order to provide controllable engagement between the ratchets J or J and the shaft T, I have arranged two pawls I, I; preferably these are constructed as parts of a single piece or member, namely, the pawl beam N which is loosely mounted and housed in the shaft T which is milled out at t toaccommodate the pawl beam and its adjuncts- The pawl beam N is perforated at h and in this perforationthe pin I-I, secured to the shaft T, fits loosely so as to permit a movement of the beam N sidewise 1 one is ofgreater width than the other, E in In the 'drawlngs hereto annexed which outward in response to the effort of the spring F and into engagen'ient with the ratchet J. flVith the parts in this relation ship, movement of the driving gearG will be communicated to the shaft T through the pinion P, ratchet J and pawl I. now,

actuator E be moved in the reverse direction sliding along the shaft T it will first engage --w-ith the shouldern and press the pawl I out of engagement with the ratchet J and will do this before the opposite end of the actuator leaves the shoulder n so that for an instant both pawls I, I are released from engagement with their respective ratchets. Further movement of the actuator E will I then allow the pawl I to engage with the and in part rocking movement on the loose pivot H. I

When it is desired to impart to the shaft T an oscillating movement the following mechanism is put in action: The hub of the gear G is bored out to receive the sliding crank shaft A which is pressed inwardly by a sprin A and carries at its inner end the crank A pin B passes through the exposed end of the cran shaft A and engages at the will of the operator with either of the notches O, C which are formed in the semicircular flange C, which is preferably an integral part of the crank M. The operative portions of the crank A move between the flanges E, E on the pawl actuating sleeve E. These 0 erative portions are best shown in Fig. 2. Sue of the operative portions A is formed as a boss projecting inwardly from the crank A and the other A is a portion of the crank A itself. The projection of the boss A? is such that the operative portions A A are offset from each other so that as shown in Fig. 1 the boss A may act upon the smaller flange E while the operative portion A'*' acts u on the larger flange E With the pin B in the notch C the crank shaft A 1s in its operative position and continuous rotation of the crank M causes the operative portions of the crank A A to engage alternately with the flanges E, E sliding the pawl actuating sleeve E alternately back and forth. As above described this reciprocation of the sleeve E causes the pawls I and I to engage alternately with the ratchets J and J and consequently alternately drives the shaft T through the pinions P, P. Consequently any tool secured in the chuck T will be given an oscillating movement.

In order to adapt this tool or machine as perfectly as possible to the work of valve grinding, the operative portions of the crank A are set at an angle one to the other so that in the ordinary right handed rotation of the gear G, the operative portion A leads the o eratiye portion A and consequently the pinion P will be in engagement with the shaft T during the larger portion of any one If it be desired to use the tool as a ratchet drill the parts are left in the same positions and relation as shown in Fig. 1 and an oscillating movement is given to the driving crank M, care being taken not to allow this oscillating movement to proceed far enough in either direction to throw the sleeve E and thus reverse the driving relations in the train of mechanism.

If it be desired to use the tool ormachine as an ordinary breast drill, the crank shaft A is moved outward and turned so that the pin B is lodged in the notch C. This movement removes the boss E beyond the limits of the smaller flange E but still within the limits of the larger flange E Continuous rotative movement of the driving crank M insures engagement between pawl I and ratchet J and places the tool or machine in condition for ordinary work as a breast drill.

The steadying handle L may be secured in any one ofseveral tapped holes K as best suits the operator.

What I claim and desire to secure by Letters Patent is:

1. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pinions loosely mounted on the shaft, respectivel provided with ratchets mutually oppose in o erative direction, a beam, mounted to root relatively to the shaft, and provided with two oppositely directed pawls, appropriate respectlvely to the ratchets, and a pawl actuator movably mounted on the shaft, to determine the alternative engagement of the pawls with the operative ratchets.

2. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pinions loosely mounted on the shaft, respectivel provided with ratchets mutually opposed in operative direction, a beam mounted to rock relatively to the shaft, and provided with two oppositely directed pawls, appropriate respectively to the ratchets, and a pawl actuator movably mounted on the shaft, to determine the alternative engagement of the pawls with their operative ratchets, and a pawl actuator controller carried by the driving gear.

3. The combination, in a suitable frame,

of a revolubly mounted shaft, a driving gear, two pinions loosely mounted on the shaft, provlded respectively with ratchets, mutually opposed in operative direction, two pawls appropriate respectively to the ratchets, and alternately engage'able therewith,

, provided respective the said pawls movably mounted and housed in the shaft, a pawl actuator movably mounted on the shaft to determine the alternative engagement of the pawls with their respective ratchets, and a pawl actuator controller carried by the driving gear.

4. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pinions mounted on the shaft, provided respectively with ratchets mutually opposed inoperative direction, a beam housed in the shaft and mounted to rock in its housing, springs supporting the beam, two oppositely directed pawls, appropriate respectively to the ratchets, carried by the beam, and a pawl actuating sleeve shdably mounted on the shaft over the beam-housing, to determine the alternative engagement of the pawls with their respective ratchets.

5. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pinions mounted on the shaft, provided respectively with ratchets mutually opposed in operative direction, a beam housed in the shaft and mounted to rock in its housing, springs supporting the beam, two oppositely directed pawls, appropriate respectively to the ratchets, carried by the beam, a pawl actuating sleeve slidably mounted on the shaft over the beam-housing, to determine the alternative engagement of the pawls with their respective ratchets, and a controller carried by the driving gear, to slide said sleeve reciprocally.

6. The combination, in a suitable frame,

of a revolubly mounted shaft, a driving gear, two pinions looseliy mounted on the shaft,

y with ratchets mutually opposed in o eratlve direction, a beam mounted to roc relatively to the shaft, and provided with two oppositely directed pawls,

appropriate respectively to the ratchets, a

pawl actuator movably mounted on the shaft, to determine the alternative engagement of the-pawls with their respective ratchets, and a disengageable pawl actuator controller carried by the driving gear.

7..The combination, in a suit-able frame, of a revolubly mounted shaft, a driving gear, two pinions loosely mounted on the shaft, provided respectively with ratchets, mutually opposed in operative direction, two pawls appropriate respectively to the ratchets, and alternately engagable therewith, the said pawls movably mounted and housed on the shaft, a pawl actuator movably mounted on the shaft to determine the alternative engagement of the 'pawls with their respective ratchets, and a disengageable pawl actuator controller carried by the driving gear.

8. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pinions mounted on the shaft, provided respectively with ratchets mutually opposed in operative direction, a beam housed in the shaft and mounted to rock in its housing,

two oppositely springs supporting the beam, directed pawls, appropriate respectively to the ratchets, carried by the beam, a pawl actuating sleeve slidably mounted on the shaft over the beam-housing, to determine the alternative engagement of the pawls with their respective ratchets, and a disengagable controller carried by the driving gear to slide said sleeve reciprocally.

9. The combination, in a of a revolubly mounted shaft, a driving gear, two pinions loosely mounted on the shaft, provided respectively with ra tchets mutually opposed in operative direction, a beam housing in. the shaft and. mounted to. rock in its housing, positely directed pawls, appropriate respectively to the ratchets, carried at the ends of the beam, and a pawl actuating sleeve slidably mounted on the shaft engaging with the beam at either end alternately to depress an end of the beam into the housing, and re lease the other end of the beam to allow en gagementof pawl and ratchet.

10. The combination, in a suitable frame,

springs supporting the beam, op-

of a revolubly niounted shaft, a driving gear,,.

two pinions loosely mounted on the shaft, provided respectively with ratchets mutually opposed in operative direction, a beam housed in the shaft and mounted to rock in its housing, springs supporting the beam, oppositely directed pawls, appropriate respectively to the ratchets, carried at the ends of the beam, a pawl actuating sleeve slidably mounted on the shaft engaging with the beam at either end alternately, to depress an end of the beam into the housing, and release the other end of the beam to allow engagement of pawl and ratchet, and means carried by the driving sleeve reciprocally.

11. The combination, in a suitable frame, of a revolublymounted shaft, a driving gear, two pinions loosely mounted on the shaft," provided respectively with ratchets mutually opposed in operative direction, a beam housed .in the shaft and mounted to rock in itshousing, springs supporting the beam, oppositely directed pawls, appropriate respectively to the ratchets, carried at the ends of the beam, a pawl actuating sleeve slidably mounted on the shaft engaging with the beam at either end alternately to depress an end of the beam into the housing, and release the other end of the beam to allow engagement of the pawl and ratchet, and dis engagable means carried by the drivinggear to slide said sleeve reciprocably.

12. The combination, in a suitable frame, of a revolubly mounted shaft, a driving ear. two pinions loosely mounted on the s aft, provided respectively with ratchets movably opposed in operative chrection, two pawls appropriate respectively to the ratchets and gear to slide said pawlsjm'ovably mouilted and housed in the shaft, a pawl actuating sleeve, slidably mounted on the shaft, to'determine the alternative engagement of the parts with their respective ratchets, and a controllercarried by the drivinggear to slide said sleeve reciprocally. v

14. The combination, in a suitable frame, of a revolubly mounted shaft, a driving ear,- two inions loosely mounted on the s aft, provided respectively with ratchets mutually opposed in operative direction, two pawls -of a revolubly mounted shaftta driving, ear,

appropriate respectively to the ratchets and alternately engageable therewith, the said pawls movably mounted and housed in the shaft, a pawl actuating sleeve, slidably mounted on the shaft and provided with a flange at either end, a crank carried by the driving gear revolvin between and alter- 'flnately engaging the s eeve flanges to slide the sleeve reciprocally.

15. The combination, in a suitable frame, of a 'revolubly mounted shaft, provided respectively with ratchets mutually opposed in operative direction, two pawls appropriate respectively to the ratchet and alternately engageable therewith, the said pawls mov- I ab y mounted and housed in the shaft, 21' pawlactuating sleeve slidably mounted on "theshaft and provided with a flange at either end, a crank carried by the driving gear revolving between and alternately engagingthe sleeve flanges toslide the sleeve reciprocally, said crank having two engagi'ng members, one for each flange, one of said members set in advance of the other, to ,slide the sleeve reciprocally and unequally in I point of time.

16. The combination, in a suitable frame, of a revolubly mounted shaft, a driving bevel gear, two bevel inions loosely mounted on the shaft, provi ed respectively with ratchets mutually opposed in operative direction, a loosely mounted beam housed in the shaft, two oppositely directed pawls appropriate respectively to the ratchets, "each at one end of the beam, springs supporting the beam and pressing it toward the ratchets, a pawl actuating s eeve slidably mounted on the shaft over the beam housing, to determine the alternate engagement of the pawls with theirrespective ratchets, a crank shaft concentric.

with and slidable in the drivin bevel gear, a V

crank on the shaft, said cran having two engaging members, one set in. advance of the other, flanges on the pawl actuating sleeve in path of the engaging members on the crank, and means to retract the crank shaft and crank out of normal engagement position relatively to the sleeve flanges.

17. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pimons loosely mounted on the shaft, provided respectively with ratchets mutually opposed in operative direction, a beam mounted in the shaft between the pinions and mounted to rock in its housing, sprin s supporting the beam, oppositely d1- recte pawls, appropriate respectively to the ratchets, carried at the ends of the, beam,

and a pawl actuating sleeve slidably' ifrlounted on the shaft engaging with the beam at either end alternately to depress an end 'of the beam into the housing and release the" other end of the beam to allow engagement of the awl and ratchet.

18. he combination, ina suitable frame,

and a pawl alternately, to depress an end of the beam into the housing, of the beam to a pawl'and ratchet and means carried by the driving gear to slide said'sleeve reciprocally.

19. The combination in a suitable frame, of a revolubly mounted shaft, a driving aind release the otherend low engagement of the gear, two pmions loosely mounted on the shaft, provided respectively with ratchets mutually opposed in operative direction, a beam housed in the shaft between the pinions and mounted to rock in its housing, sprin s supporting the beam, oppositely d1- recte pawls, appropriate respectively to the ratchets, carried at the ends of the beam, a pawl actuating sleeve. slidably mounted on the shaftenga 'ng with the beam at either end alternate y, to depress an end of the beam to allow enga ent of pawl and ratchet, and disengageab e means carried by the driving gear to slide said sleeve re ciprocally.

20. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pinions loosely mounted on the shaft, provided respectively with ratchets mutually opposed 1n. operative direction, two pawls appropriate respectively to the ratchets and alternately engageable therewith, the said pawls movably mountediand housed 1n the shaft, a pawl actuating sleeve,

slidably mounted on the shaft between the pinions to determine the alternative ment of the ratchets.

21. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pinions loosely mounted on the shaft, provided respectively with ratchets engageparts with their respective mutually opposed 1n operative direction,

two pawls appropriate respectively to the ratchets and alternately engageable therewith, the said pawls movably mounted and housed in the shaft, a pawl actuating sleeve, slidably mounted on the shaft between the pinions to determine the alternative engagement of the parts with their respective ratchets, and a controller carried by the driv ing gear to slide said sleeve reciprocally.

22. The combination, in a suitable frame, of a revolubly mounted shaft, a driving gear, two pinions loosely mounted on the shaft, provided respectively with ratchets mutually opposed in operative direction, two pawls appropriate respectively to the ratchets and alternately engageable therewith, the said pawls movably mounted and housed in the shaft, a pawl actuating sleeve, slidably mounted on the shaft between the pinions and provided with a flange at either efiid,-'a crank carried by the driving gear revolving between and alternately engaging the sleeve flanges to slide the sleeve reciprocally.

23. The combination, in a suitable frame, of a revolubly mounted. shaft, a driving gear, two pinions loosely mounted on the shaft, provided respectively with ratchets mutually opposed in operative direction, two pawls appropriate respectively to the ratch' ets and alternately engageable' therewith, the said pawls movably mounted and housed in the shaft, a pawl actuating sleeve slidably mounted on the shaft between the pinions and provided with a flange at either end, a crank carried by the driving gear revolving between and alternately engaging the sleeve flanges to slide the sleeve reciprocally, said crank having two engaging members, one for each flange, one of said engaging members set in advance of the other, to slide the sleeve reciprocally and unequally in point of time.

24. The combination, in a suitable frame,

of a revolubly mounted shaft, a driving bevel gear, two (pinions loosely mounted on the shaft, provi ed respectively with ratchets mutually opposed in operative direction, a loosely mounted beam, housed in the shaft between the pinions, two oppositely directed pawls appropriate respectively to the ratchets, each at one end of the beam, springs supporting the beam and pressing it toward the ratchets, and a .pawl actuating sleeve slidably mounted on the shaft over the beam housing, to determine the alternate engagement of the pawls with their respective ratchets, a crank-shaft concentric with and slidable in the driving bevel gear, a crank on the shaft, flanges on the pawl actuating sleeve in the path of the crank, and means to retract the crank shaft and crank out of normal engagement position relatively to the sleeve flanges.

25. The combination, in a suitable frame, of a revolubly mounted shaft, a driving bevel gear, two bevel pinions loosely mount ed on the shaft, provided respectively with ratchets mutually opposed in operative direction, a loosely mounted beam housed in the shaft between the pinions, two oppositely directed pawls appropriate respectively to the ratchets, each at one end of the beam, springs supporting the beam and pressing it toward the ratchets, a pawl actuating sleeve slidably mounted on the shaft over the beam housing, to determine the alternate engagement of the pawls with their respective ratchets, a crank shaft concentric with and slidable inthe driving bevel gear, a crank on the shaft, said crank having two engaging members, one set in advance of the other, flanges on the pawl actuating sleeve in the path of the engaging members on the crank, and means to retract the crank shaft and crank out of normal engagement position relative to the sleeve flanges.

Signed by me at Bridgeport, Connecticut this 15th, day of January 1910.

FREDERICK C. BLANCHARD. lVitnesses:

W. R. CLARKE,

JAMES P. ONE'IL.

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