US652137A

US652137A - Hand-drill.

Info

Publication number: US652137A
Application number: US1134800A
Authority: US
Inventors: John E Olson
Original assignee: Individual
Current assignee: Individual
Priority date: 1900-04-03
Filing date: 1900-04-03
Publication date: 1900-06-19
Anticipated expiration: 1917-06-19

Description

. No. 652,|37, Ptented lune-|9, |900.

J. E. OLSON. HAND DRILL.

(Appxication filed Apr. 3, 1900.) (No Model.)

UNITED STATES PATENT OEEICE.

JOHN E. OLSON, OF CHICAGO, ILLINOIS.

HAND-DRILL.

SPECIFICATION' formingpart of Letters Patent No. 652,137, dated June 19, 1909. pplication filed April 3, 1900. Serial No. 11,848. (No model.)

To all whont it may concern: lle it known that I, JOHN E. OLSON, a citizen of the United States, residing at Chicago,

in the county of Cook and State of Illinois,

have invented new and useful Improvements in Hand-Drills, of which the following is a specification.

This invention relates to hand-drills, and

has for one object to provide a double-acting ratchet-drill of improved construction wherein the reciprocating movement of the hand actuating mechanism is converted into a continuous rotary movement by the double ratchet mechanism, whereby the drill or boring-tool is continuously rotated in the proper direction to effect the drilling orboring operation. It has for its further object to provide a hand-drill of the character described which shall be simple and inexpensive in construction and efcient and rapid in operation.

To these ends my invention consists in the features and in the construction, combination, and arrangement of parts hereinafter described, and particularly pointed out in the claims following the description, reference being had to the accompanying drawings, forming a part of this specification, wherein- Figure l is a 4longitudinal sectional view of my improved drill. Figs. 2 and 3 are detail views illustrating the manner in which the bolt alternately engages the ratchet-wheels. Fig. 4 is a face view of one of the ratchetwheels. Fig. 5 is a transverse sectional View of the same. Fig. 6 is a top plan View ofthe hub. Fig. 7 is a side elevation of the saine. Fig. 8 is a view'showing the bolt in side and front elevation.

Referring to the drawings, the numeral l indicates a casing for inclosing the ratchet mechanism and comprising two semi-ellipsoidal shells 2, each provided with semicylindrical extensions 3 at its opposite ends, said shells being arranged face to face and secured together by ferrules 4, fitted over the extensions 3. The two shells, constructed and secured together in the manner described, form a hollow bulb-like casing, which may be conveniently grasped in the hand of vthe operator. Disposed in` the upper part of the casing 1 .is a beveled gear-wheel 5, centrally cored, as at, and fixed in said gear-wheel is the lower end of a spirally grooved or threaded rod 7. Sleeved upon the rod 7 is a tube 8, provided atits lower end with a nut 9,which engages the spiral grooves or threads on the rod 7, and said tube is provided at its opposite end with a handle 9a, of any approved or preferred construction, suitable to be grasped in the hand of the operator. 'By holding the casing 1 stationary and reciprocating the tube S on the spirally-grooved rod 7 said rod and the beveled pinion 5, fixed thereon, will be alternately rotated in opposite directions in a well-known manner. Passing through the lower end of the casing l is a shaft 10, on the upper end of which is formed a barrel or hub l1, the extreme upper end 12 of said shaft being loosely tted in the centrally-cored portion G of the beveled pinion 5, which forms a journal-bearing therefor. Disposed in the lower portion of the casing and journaled on the shaft 10 is a beveled gear-wheel 13, corresponding in shape and size to the gear-wheel 5, and screwed into the sections 2 2 of the casing are two screws 14, which serve as journals, on which are journaled beveled gear-wheels 15, which gear thebeveled gear-

wheels

5 and 13 together. It therefore follows that if the beveled gear-wheel 5 be rotated in either direction the gear-wheel 13 will be rotated in the reverse direction. On the inner adjacent faces of the gear-wheels are formed ratchetteeth 1G, the teeth being arranged in the form of a circle on each gear-wheel and the teeth on one gear-wheel being arranged in a reverse direction to those of the other gear-wheel. Formed in the opposite vertical sides of the barrel or hub 11 are two vertical dovetailed grooves 17, in each of which is arranged to freely reciprocate a bolt 18, the opposite ends of which are reversely inclined or beveled, as shown at 19 and 20, said bolt being dovetailed in cross-section to Iit the dovetailed groove in the barrel or hub in which it plays. The bolts 18 are of such length that when one'end of either of said bolts is in engagement with the ratchet-teeth of one of the beveled gearwheels its opposite end will be out of engagement with the ratchet-teeth of the other gearwheel.

On the outer end of the shaft l() is fixed a IOO chuck 21, ofany suitable or preferred con- ]sOtructiou, which operates to hold the drill or The operation of my improved device is as follows: The drill, bit, or other boring-tool is placed in the chuck 21 in the usual manner, and being centered at the point to be bored the casing 1 is grasped in one hand and the ,handle 9a in the other hand. The operator holds the casing stationary, pressing it slightly toward the work, and with the other hand reciprocates the tube S backward and forward over the rod 7. As the tube 8, and with it the nut 9, is moved in one direction it rotates the rod 7 and with it the beveled gear-wheel 5 in a certain direction, and through themedium of the intermediate gear-wheels 15 rotates the other beveled gear-wheel 13 in a reverse direction. For example, let it be assumed that when the nut is forced toward the casing the ratchet-

Wheels

5 and 13 will be revolved in the directions indicated by the arrows in Fig. 2then the lower beveled ends 2O of the bolts 18 will engage the ratchetteeth of-the wheel 13 and will cause the barrel or hub 11, and consequently the boringtool, to rotate in the same direction as the wheel 13, the ratchet-teeth of the wheel 5 passing idly over the upper ends 19 of the bolts. When thenut 9 is moved in the reverse direction, howeverthat is to say, away from the casing l-then the

wheels

5 and 13 will also be moved in the reverse direction or in the directions indicated by the arrows in Fig. 3, and the ratchet-teeth acting on the beveled ends 2O of the bolts 1S will force the latter endwise toward the wheel 5 and into engagement with the ratchet-teeth on the latter, and the barrel or hub 11, and with it the boring-tool, will then rotate with the said wheel v5, the movement of which is now the reverse of that before described. It will be readily understood, therefore, that the boringtool will always be rotated in one certain direction or in a direction to cause the tool to enter the work irrespective of the direction in which the nut 9 is moved on the spirally-grooved rod 7.

I have shown and described two bolts 18 as engaging the ratchet-teeth on the beveled gear-wheels; butit will be evident that a single bolt may be employed for the purpose, though two bolts are preferred, as such arrangement more equally distributes the strain on the parts and causes the device to operate more evenly.

Having described my invention, what I claim is 1. In a hand-drill, the combination with a spirally-grooved rod andanut sleeved thereon and operating when reciprocated to rotate said rod alternately in opposite directions, a

tool-holder, and double-acting ratchet mechanism actuated by said rod for rotating the drillholder continuously in one direction, substantially as described.

2. In a hand-drill, the combination with a spirally-groovcd rod and a nut sleeved thereon and operating when reciprocated to rotate said rod alternately in opposite directions, a toolholder, and ratchet-gearing interposed between the said rod and tool-holder and actuated by the said rod, said ratchet-gearing being constructed and arranged to rotate the tool-holder continuouslyin olie direction, substantially as described.

3. In a drill, the combination with a casing, of two oppositely-arranged wheels gearedtogether to rotate in opposite directions, a spirally-grooved rod and nut for rotating one of -said wheels alternately in opposite directions,

a tool-holder, and means for automatically connecting said tool-holder alternately with said wheels as the movement of the latter is reversed, whereby the tool-holder is rotated continuously in one direction, substantially as described.

4. In adrill, the combination with a casing, oftwo oppositely-arranged wheels geared together to rotate in opposite directions, means for rotating one of said Wheels alternately in opposite directions, a tool-holder, a sliding connection carried by the tool-holder and means for automatically throwing said connection alternately into engagement with said wheels, substantially as described.

5. In a drill, the combination with a casing, of two oppositely-arranged wheels geared together to rotate in opposite directions and provided on their adjacent faces with oppositely-arranged ratchet-teeth, of a tool-holder, a sliding bolt arranged to alternately engage said ratchet-teeth, and means for alternately rotating one of said wheels in opposite directions, substantially as described.

6. In a drill, the combination with a casing, of two oppositely-arranged wheels geared together to rotate in opposite directions and provided on their adjacent faces with reverselyarranged ratchet-teeth, of a hub rotatably arranged between said Wheels and carrying a sliding bolt beveled on its opposite ends and arranged to alternately engage said wheels, a tool-chuck carried by said hub, and means for alternately rotating one of said wheels in opposite directions, substantially as described.

7. In adrill, the combination with a casing, of two oppositely-arranged wheels geared together to rotate in opposite directions and provided on their adjacent faces with reversely-arranged ratchet-teeth, of a hub rotatably arranged between said wheels and carrying a sliding bolt reversely beveled on its opposite ends and arranged to alternately engage said wheels,'a tool-chuck carried by said hub, and means for alternately rotating one of said wheels in opposite directions, substantially as described.

8. In a drill, the combination with a casing, of two oppositely-arranged wheels geared together to rotate in opposite directions and provided on their adjacent faces with reversely-disposed ratchet-teeth, of a hub ro- ICO IIO

tatably arranged between said Wheels and provided on its periphery with a dovetailed groove, a bolt slidably arranged in said groove and reversely beveled on its opposite ends, said bolt being arranged to alternately engage said ratchet-teeth, means for alternately rotating one of said wheels in opposite directions, and a tool-chuck carried by said hub, substantially as described.

9. In a drill, the combination With a casing, of two oppositely-arranged Wheels geared together to rotate in opposite directions and provided on their adjacent faces with reversely disposed ratchet teeth, of a shaft passing loosely through said casing and one of said wheels, a hub carried by the shaft and provided on its periphery with a dovetailed groove, a bolt slidably arranged in said groove and reversely beveled on its opposite ends, said bolt being arranged to alternately engage said ratchet-teeth, a toolchuck xed on the free end of the shaft, and means for alternately rotating one of the said Wheels in opposite directions, substantially as described.

l0. n a drill, the combination with the hollow casing, of the beveled gear-wheels arranged in the opposite ends thereof and provided on their adjacent faces with reverselyarranged ratchet teeth, said wheels being geared together to rotate in opposite directions, a shaft passing loosely through the casing and one of said wheels, a hub carried by the shaft and provided on its periphery with a dovetailed groove, a bolt slidably arranged in said groovevand reversely beveled on its opposite ends, said bolt being arranged to alternately engage said ratchet-teeth, a toolchnck xed on the free end of the shaft, a spirally grooved rod fixed in one of said Wheels, a nut sleeved on said rod, and means for reciprocating said nut on the rod in opposite directions, substantially as described.

In testimony whereof I have hereunto set my hand in presence of tWo subscribing Witnesses.

JOHN E. OLSON.

Witnesses:

Anvln ERICKSON, W. O. BLooMQUIsT.