US1094205A

US1094205A - Ratchet-drill.

Info

Publication number: US1094205A
Application number: US77414413A
Authority: US
Inventors: Thomas J Fegley; George O Leopold
Original assignee: NORTH BROS Manufacturing CO
Current assignee: NORTH BRO'S M'F'G CO; NORTH BROS Manufacturing CO
Priority date: 1913-06-17
Filing date: 1913-06-17
Publication date: 1914-04-21
Anticipated expiration: 1931-04-21

Description

T. J. PEGLEY & G. 0. LEOPOLD.

RATGHET DRILL.

APPLICATION FILED JUNE 17, 1913.

COLUMBIA PLANOGRAPH co\v^sHlNG'roN, D. c.

UNITED STATES `PATENT OFFICE.

THOMAS J. FEGLEY AND GEORGE O. LEOPOLD, OF PHILADELPHIA, PENNSYLVANIA,

ASSIGNORS TO NORTH BROS MFGr CO., OF PHILADELPHIA, PENNSYLVANIA, A COR- PORATION OF PENNSYLVANIA.

RATCHET-DRILL.

To all whom 'it may concern:

Be it known that we, THOMAS J. FEGLEY and GEORGE O. LEOPOLD, citizens of the United States, residing in Philadelphia, county of Philadelphia, State of Pennsylvania, have invented certain Improvements in Ratchet-Drills, of which the following is a specification.

One object of our invention is to make a ratchet drill which is simple in construction and in which the feed screw is ratcheted either to the right or to the left or locked to the casing. v

A further object of the invention is to provide means whereby either a tapered cylindrical shank bit or one having a square shank can be mounted in the tool. y

In the accompanying drawings: Figure 1 is a perspective view of our improved ratchet drill; Fig. 2 is avertical sectional view; Fig. 3 is a sectional plan view; Fig. 4 is a sectional elevation on the line a-a, Fig, 8; Fig. 5 is a detached perspective view of the shell; Fig. 6 is a detached perspective view of the chuck; Fig, 7 is a detached perspective view, partly in section, of the feed sleeve; Fig. 8 is a perspective view showing the two pawls and the shifter; Fig. 9 is a perspective view of one o-f the sleeves having around hole therein; Fig. 10 1s a plan view of the sleeve illustrated in Fig. 9; Fig. l1 is a perspective view of a sleeve having a square tapered opening adapted to receive a squared shank bit; and Fig. 12 is a plan view of Fig. 11.

Referring to the drawings, 1 is the casing having a projection 2 and secured in this projection is a handle 3. At the outer end of the handle, in the present instance, is an opening 4 and adapted to this opening is a threaded plug 5 having a pin 6 secured thereto. Vhen this plug is detached the pin can be used to turn the feed sleeve having the bearing point.

7 is a shell mounted in the casing 1 and this shell has a flange 8 which rests on the casing and prevents the shell from moving in one direction and a flanged cap 9 which has a threaded portion adapted to a thread in the shell prevents the shell from moving in the oppo-site direction. The shell has an extension 10 in which slides the feed sleeve Specification of Letters Patent.

Application led .Tune 17, 1913.

Patented Apr. 21, 1914.

serial No. 774,144.

1l having holes 12 into which the pin 6, or other tool, can be inserted when it is desired to turn the bearing point without using the ratchet mechanism.

13 is the chuck, made as illustrated in Fig. 6, having a threaded portion forming a feed screw and a ratchet wheel 14. This ratchet wheel rests against an internal shoulder 32 on the shell. Below the rat-Chet wheel is a flange 15 and into the groove between the flange and the ratchet wheel is inserted a key 16 which extends through a slot in the shell, thus locking the chuck against longitudinal movement, but allowing it to turn in the shell. The threaded portion of the chuck is adapted to the internal threads in the feed sleeve 11, as indicated in Fig. 2, so that when the chuck is turned in one direction the feed sleeve is projected and when the feed screw is turned in the opposite direction the feed sleeve is retracted.

In the shell 7 is a slot 17 and lateral grooves 18 are located at each end of the slot and in these grooves rest the pivoted portions 19 of the pawls 20 which are controlled by the shifter 21 having a projection 22 which extends through a slot 23 in the casing 1, Fig. 1. Vhen the shifter is moved to one extreme position, one pawl is in engagement with the ratchet wheel and the other is out of engagement therewith. Then it is moved in the other extreme position the other pawl is in engagement and the first mentioned tool is out of engagement. When the shifter is in the mid position, as in Figs. 3 and 4, both pawls are in engagement and the ratchet wheel and its chuck are locked to the casing so that the drill bit can be turned with the casing. This is necessary in some instances Where the drill becomes fast in the work.

In the portion 15 of the chuck are recesses 24 to receive the lugs 25 on the detachable sleeve 26 which is mounted in the lower end of the shell. The sleeve has a iange 27 against which bears the end of the cap 9. A portion of the sleeve extends through the cap, as shown in Fig. 2. The chuck has a tapered opening, and this opening is of such a size as to fit the standard shank of an ordinary drill bit. The hole in the sleeve 26 is of a greater diameter than the shank of the drill bit so that the bit will seat itself en tirely in the chuck.

28 is a sleeve which may be substituted for the sleeve 26. The sleeve also has lugs, as shown at 29, and is held in engagement with the feed screw by the cap 9, but instead of the round opening as in the sleeve 26, Figs. 9 and l0, the opening is tapered and square in cross section, as illustrated in Figs. ll and l2. vWhen this sleeve is in place then the ordinary square shank bit can be used. The bit, in this instance, does notV extend into the opening in t-he chuck but seats itself in the sleeve and motion is imparted to it from the feed screw through the lugs and sleeve.

By providing the key. 16, the chuck is held in the shell independently of the cap 9 so that when it is necessary to remove one sleeve and to substitute another the cap can be detached and the sleeve removed without detaching the chuck from t-he shell. If, however, it is necessary at any time to remove the chuck, then the shell can be withdrawn from the casing and the key removed. l/Vhen the parts are assembled, the shell holds the key in position locking the chuck against longitudinal movement in the shell. 1We preferably secure the shell to the casing by a key 30 which is adapted to a groove formed partly in the shell and partly in the casing, as illustrated in Fig. 2. Thus the shell is prevented from turning in the casing, while the chuck is free to turn therein and is controlled by the ratchet mechanism carried by the shell.

It will thus be seen by the above construction that we make a ratchet drill which can be cheaply constructed and in which either a round, tapered shank or a square, tapered shank can be used by merely substituting one sleeve for another.

The operation is as follows: If the round tapered shank bit is used it is mounted in the chuck. The end projecting into the slot 31 at the end of the chuck prevents it from turning and when the shifter is moved so as to cause the pawls to feed to the right on the movement of the handle, the chuck and its drill will be turned to the right. If the feed sleeve is turned by the pin 6, or other suitable instrument, the drill will be fed forward to the work. If the feed sleeve is not turned or if it is not held then it will turn with the chuck. Then it is desired to reverse the movement, all that is necessary is to move the shifter 2l so as to throw the other pawl into engagement and on reciproeating the handle the movement of the drill bit will be reversed. The chuck can be fixed to t-he casing by moving the shifter to the central position. If a square shank bit is to be used, then the chuck sleeve 26 is removed and the chuck sleeve 28 substituted therefor. This chuck sleeve has a square tapered opening to lit the square tapered shank of the bit. When a bit of this type is used it does not directly engage the chuck but as the sleeve is connected to the chuck it must turn therewith.

By the above construction, it will be seen that the feed screw forms an integral part of the chuck and is protected by the feed sleeve which has its bearing in the elongated extension l0 of the shell. lurthermore, the shell can be easily removed from the casing by detaching the ianged cap i). The pawls are then readily accessible.

le claim:

l. The combination in a ratchet drill, of a casing; a shell secured to the casing; a chuck mounted in the shell, said chuck having a feed screw and a ratchet wheel thereon; pivoted pawls carried by the shell and arranged to engage the ratchet wheel; a. shifter bearing upon both pawls and a1'- ranged so that when moved to one position, one pawl will engage the ratchet wheel and when moved to the opposite position the other pawl will engage the ratchet wheel; means for preventing longitudinal movement of the chuck in the shell; and a feed sleeve having an internal thread engaging the feed screw portion of the chuck.

2. The combination in a ratchet drill, of a casing; a shell secured to the casing; a chuck mounted in the shell having a feed screw and a ratchet wheel thereon; pivoted pawls carried by the shell and arranged to engage the ratchet wheel, one pawl arranged to allow the wheel to ratchet to the right and the other pawl arranged to allow the wheel to ratchet to the left; a shifter for the pawls so that one or the other of the pawls is thrown into engagement with the ratchet wheel; means for preventing longitudinal movement of the chuck in the shell, but allowing it to rotate freely therein; and a feed sleeve arranged to slide in the shell and having a thread arranged to engage the thread in the feed screw, the chuck having a tapered opening therein for the reception of the shank of a drill bit.

3. The combination in a ratchet drill, of a casing;4 a shell mounted in the casing and secured thereto; a chuck located in the shell and arranged to rotate freely therein and having a ratchet wheel integral therewith; pawls mounted on the shell and engaging the ratchet wheel; a cap secured to the shell and extending over the easing so as to hold the shell in the casing; a detachable sleeve located in the shell and having an opening therein and arranged to engage the chuck so that it will turn therewith, said sleeve being held in position by the cap.

4L. The combination in a ratchet drill, of a casing; a shell secured to the casing; a chuck mounted in the shell and having an integral feed screw and an integral ratchet wheel; pawls carried by the casing and engaging the ratchet wheel; and a feed sleeve engaging the feed screw.

5. The combination in a ratchet drill, of a casing; a shell secured to the casing; a chuck mounted in the shell and having a ratchet wheel; the shell having a flange at one end and being screw threaded at the op posite end; and a flanged cap having a thread engaging the thread of the shell and acting to retain the casing and the chuck in the shell.

6. The combination in a ratchet drill, of a casing; a shell secured to the casing; said shell having a flange; a cap secured to the shell opposite the flange so that the shell is held to the casing between the flange and the cap; a chuck having a ratchet wheel, said chuck being located in the shell, the shell having an extension; and feed mechanism mounted in the extension.

7. The combination in a ratchet drill, of a shell; a chuck mounted in the shell and having a ratchet wheel; a pawl by which the ratchet wheel is turned on the movement of the shell, the chuck having transverse recesses; a sleeve detachably mounted in the shell and having lugs extending into the transverse recesses of the chuck; and means for retaining the sleeve in engagement with the chuck.

8. The combination in a ratchet drill, of a casing; a flanged shell located in the casing; a cap coperating lwith the flange of the shell for securing the shell to the casing; means for preventing the shell from turning in the casing; a chuck having a tapered opening therein and recessed at its upper end, said chuck having an integral ratchet wheel; the chuck'having transverse recesses therein; a sleeve having lugs extending into the transverse recesses and held in engagement with the chuck by the cap; and feed mechanism for feeding the drill to the Work.

9. The combination in a ratchet drill, of a casing; a shell secured to the casing; said shell having an internal shoulder; a chuck mounted in the shell and having a ratchet wheel resting against the shoulder; a cap and a sleeve; said sleeve being mounted between the chuck and the cap and engaging the chuck so that it will turn therewith, the chuck and the sleeve being prevented from moving longitudinally by the cap and the internal shoulder on the shell.

10. The combination in a ratchet drill, of a casing; a shell mounted in the casing; a chuck located in the shell; a cap retaining the shell in the casing and the chuck in the shell; a detachable sleeve located between the cap and the chuck, said chuck having a groove; and a key extending through the shell and into the groove of the chuck so that the chuck is held in position in the shell independently of the cap, allowing the sleeve to be detached without disturbing the chuck.

In testimony whereof, we have signed our names to this specification, in the presence of two subscribing witnesses.

THOMAS J. FEGLEY. GEORGE O. LEOPOLD.

Witnesses:

OLYDE MOYER, WM. A. BARR.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner cf atents, Washington, D. Q.