US636208A - Ratchet-drill. - Google Patents

Description

Paiemed oct. 3|, |899.

A. KLAY. A RATCHET DRILL.

(Application led June 26, 1899.;

(No Model.)

NQ NW NN ehm N r l um f MJ PAT-snr smc.,

ANDREW KLAY, OF BLUFFTON, OHIO, ASSIGNOR OF ONE-HALF TO CHRIS- l TIAN WEISS, OF JENERA, OHIO.

RATCHET-DRILL.

SPECIFICATION forming part 'of Letters Patent No. 636,208, dated October 31, 1899. Application. flied June `26, 1899. Serial N0. 7211890 (No model-l To @ZZ whom it may concern: t

Be it known that I, ANDREW KLAY, a citizen of the United States, residing at Bluffton, in the county of Allen and State of Ohio, have invented a new and useful Ratchet-Drill, of

which the following is a specication.

My invention relates to improvements in ratchet-drills especially adapted for use in connection with metal-working bits or tools;

1o and one object is to provide a simple and durable construction of ratchet-working mechanism capable of reversal to be operated in` especially serviceable on work having its sur-l faces remotely situated, such as for service on the interior of steam-boilers. This feature of my invention provides for variation in the length of the center post to be adapted to 3o structures of different localities and conditions of use, and with the post is associated mea-ns for feeding or keeping the drill-bit in active relation to the work, such feed mechanism being readily operable without rotation of the post.

With these ends in View the invention consists in the novel combination of elements and in the construction and arrangement of parts,which will be hereinafter fully described 4o and claimed.

To enable others to understand the invention, I have illustrated dierent embodiments thereof in the accompanying drawings, forming a part of this specification, and in which- Figure 1 is a sectional elevation of a ratchetdrill mechanism used in connection with an elongated sectional central post embodying some of the features of my present invention. Fig. 2V is a vertical sectional elevation of another embodiment of the invention which employs a feed-screw equipped With a cent-er Aline 373 of Fig.

pivot and improved means for conveniently turning the feed-screw. Fig. 3 is a sectional plan view on the plane indicated by the dotted Fig. i is a fragmentary 55 sectional elevation illustrating the means for loosely sleeving the operating-lever on the notched tubular body of the ratchet-drill. Fig. 5 is a similar fragmentary detail sectional elevation of the means for loosely sleeving the 6o feed-screw-rotating devices.

The same numerals of reference are used to indicate like 'and corresponding parts in each of the several figures of the drawings.

The tubular body 10 of the drill is provided 65 'at one end with a square or polygonal socket 11, adapted to receive the shank of the bit or any other suitable boring-tool, said `body lneing also formed with a female threaded socket 12, adapted for the reception of a feed-screw, 7o as will hereinafter appear. Near the endin which the polyonal bit-socket is formed the tubular body is provided with an external annular collar-13, in which collar is produced a series of angular notches 14, which forms 7 5l the ratchet on the external face of the tubular body. In connection with this tubular body I employ a sectional two-part lever, which carries a feed-pawl adapted for engagementwith the ratchet-collar and also car- 8o ries an adjusting-spindle bywhich the feedpa wl may be retracted from engagement with the ratchetcollar and reversed relatively thereto for the purpose of making the pawl cooperate with the ratchet on the operation of the lever in one direction or the other. Said lever consists ofthe members 15 1(3,which are joined firmly together by the thread-joint 17, consisting, preferably, of aV female thread on the member 15 and a male thread on the 9o member 1G, whereby the two parts of the handle may be readily separated or assembled. The inner member 15 of the lever is enlarged and fitted loosely on the tubular body, so as member 15 is retained in place on the tubular Ioo body by means of a retaining-disk 19, which is screwed into an open side of the lever member 15 opposite to the fiange 18. Said retaining-disk is thus made fast at one side of the lever member 15 to impinge against the other face of the ratchet-collar 13 on the tubular body, and to prevent the disk from being disconnected accidentallyon thelever member15 I provide a locking device that holds the disk firmly connected to the lever member 15. This disk is provided with one or more notches 2O in one edge thereof, and in this notch is seated a key-pin 21, said pin having a longitudinal notch 22 in one edge thereof. The pin 21 is seated against the retracting-spring 23, contained in the socket 23 of the lever member 15. (See Fig. 4.) The stop-screw 24 fits a suitable bearing in a part of the lever member 15 to enter the notch 22 of the key-pin 21, so that the pin is held against disengagement from the lever member 15, while the pin in turn holds the disk 19 against rotation and accidental disconnection from the lever member l5. It will thus be seen that the sleeve-formed end of the lever member 15 is fitted loosely on the tubular body toturn freely around the ratchet-collar thereon, and the flange 18 and the disk 19 cooperate with the ratchet-collar 13 to retain the lever member against movement lengthwise of the tubular body. The lever members 15 16 are hollow for the reception of an adjusting-spindle 25, adapted to carry the feed-pawl. Said spindle extends loosely through the hollow lever member 16, so as to project into the similar lever member 15, the outer end of the spindle being formed with a transverse locking head 26. This head is adapted to be drawn by the tension of the pressure-spring, so as to fit within notches 27, produced in the end of the lever member 16, and the milled edges of this locking-head 26 on the adjusting-spindle normally lie Hush with the cylindrical face of the lever member 16, whereby the lever may be manipulated in the hands of the operator without disturbing the position of the spindle or the action of the feed-pawl on the ratchet-collar of the tubular body. The engagement of the trans- `verse head with the lever member 16 locks or confines the spindle against rotation and endwise movement within the hollow lever. At a point intermediate its length this adjusting-spindle is provided with a collar 2S, the latter being formed on that part of the spindle which occupies the enlarged space within the lever member 15. This collar'serves as a seat for one end of acoiled pressure-spring 29, fitted loosely on the adjusting-spindle 25 and adapted to be seated against the inner end of the lever member 16, whereby the spring 29 acts against the collar 2S to normally draw the spindle lengthwise of the lever and make the locking-head 26 fit in the notches 27 of the lever member 16, thereby maintaining the locking-spindle in practically a fixed position. within the hollow lever. The feedpawl 30 is connected operatively with the adjusting-spindle to be retracted on endwise movement of said spindle to a position where its nose will lie out of the path of the notches 14 of the ratchet-collar; but this feed-pawl is capable of free play or movement on the adjusting-spindle, so as to be operable with relation to the ratchet-collar independently of any adjustment of the spindle. The active end of the feed-pawl is formed with a beveled nose 31, adapted to t into the notches of the ratchet-collar on the tubular body, and this pawl is furthermore provided with a longitudinal socket 32, adapted to loosely receive the inner end of the adjusting-spindle 25. The pawl carries a transverse pin 33, which passes through a short slot 3,4, which is produced longitudinally in the spindle 25, near Ithe inner end thereof, and against the heel of this slidable pawl is seated the pawl pressurespring 35, the latter being of the coiled variety to fit loosely on the spindle 25 and to act against the collar 28 thereon. The pressurespring 29 normally holds the spindle 25 in a position to present the spring-actuated pawl 30 in a position for its nose 3l to engage with the ratchet-collar, and this pawl is pressed by its spring 35 into one or the other of the notches in said ratchet collar. The pawl, however, is capable of a yielding movement or play on the spindle and independently of any adj ustment thereof within the lever-handle. It will therefore be understood that with the parts in the position shown by Fig. 3 the lever can be moved in the direction indicated by the arrow, and the abrupt side or face of the pawl will engage with a corl'espending face of one notch 14 in the ratchet, whereby the movement of the lever will be communicated by the pawl to theratchet-collar and the tubular body will turn with the lever. A reverse movement of the lever, however, will canse the beveled nose of the pawl to ride against the ratchet-collar and to slip idly thereover, thus permitting the lever to be returned to an operative position without rotating the tubular body or the drill-bit. At the same time the spindle 25 may be reversed to change the position of the pawl with relation to the ratchet, so that the lever may be operated in an opposite direction, and this end may be easily accomplished by the operator grasping with his fingers the head 26 and pulling outward on the spindle, thereby compressing the pressure-spring 29 and making the pin 33 pull outward on the pawl 30 until the head 26 frees the notches 27 in the outer end of the lever, after which the spindle 25 may be given a half-turn until the head 26 again assumes a position in alinement with the notches 27 at each time the spring 29 recoils to force the spindle 25 endwise for the head 26 to enter thenotches 27, and thus present the pawl 30 in a reversed position to the ratchet-collar 13 on the tubular body.

In connection with the tubular body I may employ either of the types of feed devices which are illustrated by Figs. 1, 2, and 3; but I will first proceed to describe the compact simple form of feed device shown by the last- ICO named views, Figs. 2 and 3. The short feedscrew 36 has threaded engagement with the socket 12 in the tubular body 10,'and the eX- posed protruding end of this feed-screw is formed with a central pivot 37, said pivot 37 being an integral part of the short feed-screw. Said feed-screwis furthermore provided with an annular collar 38 between its threaded shank and the center pivot, and in this collar is formed a series of radial pockets 39,adapted to receive afeed-pin 48,which may be thrust successively into said pockets for rotating the screw. This feed-screw is supported idly by a feed-sleeve 40, which loosely embraces a smooth part of the screw and a collar 38 thereon, said feed-sleeve being formed or provided with a tubular extension 4l. A retaining-disk 42 is screwed into a threaded opening in the feed-sleeve 40, and this retaining-disk 42 coperates with a rib 40a on the feed-sleeve in holdin'g the latter against endwise displacement relatively to the collar 38 on the feed-screw, whereby the sleeve 40 is normally confined in a loose condition and in operative relation to the collar 38 on the screw 36. The retainingscrew 42 is held in place by means of the locking contrivance shown by Fig. 5, said disk having a notch 43 to receive a key-pin 44, which is formed with a notch 45. A stopscrew 46 is fitted in the slee-ve 40 to engage with a notch 44 of the key-pin, and against this pin operates a spring 47, which is seated in a socket formed within the sleeve 40, all as clearly shown by Fig. 5.

The operating-pin 48 for rotating the feedscrew is fitted loosely in the tubular extension 41 of the sleeve 40, and the pointed inner end 49 of this pin is adapted to fitin either of the apertures 39 of the collar on the feedscrew, thus temporarily making the operating-pin fast with the feed-screw, so as to rotate the latter in the socket l2 of the tubular body, and thereby advance the drill-bit into the work. The screw-operating pin is con- Iined against displacement in the tubular eX- tension 4l by means of a stop-screw 5l, which is attached to the extension 41 and plays in a groove 50, which is cut in one face of the operating-pin 49, said slotbeing long enough to allow the pin to be withdrawn from one aperture before its endwise movement is arrested by the stop-screw 3l.

The tubular body, thelever, and the ratchetbit mechanism of my invention may be used in connection with the elongated sectional post and an extended feed-screw of the character represented by Fig. l of the drawings, and in this adaptation of my invention the .sleeve 40, the operating-pin 49, and the feedscrew 36 are omitted. The device shown by Figs. 2 and 3 is especially intended for use on work having parts thereof arranged at such a distance apart as to accommodate the feedscrew and other parts of the implement; but in some classes of work the. surfaces are disposed quite remote. Hence it has heretofore been necessary to employ blocks and other contrivances to furnish a bearing for the pivot-screw. I overcome this objection by the provision of a center post of elongated sectional construction and by the employment of a long feed-screw which has loose engagement with the center post and is equipped with a feed-nut that nds a bearingv against a part of the center post.

The center post 52 relating to this part of my invention is of sectional separable construction, as shown by Fig. l, and it consists, essentially, of a tubular member 53, one or more solid members 54, and a coupling 55. In the drawings l have shown the post as having a single solid member 54; but it is evident that the number of these parts may be duplicated, according to the desired length of the post and the nature of the`work. The contiguous ends of the members 53 54 are provided with male screw-'threads adapted to engage with female threads on the coupling 55, which serves to separably unite the members and to dispose them in alinement one with the other. The outer end of the sectional post is equipped with a central pivot 56, having a threaded end which is screwed into a coupling 57, that is united to the outer extremity of one member 54 of the post; but

it is evident that the member 54 and coup-- ling-57 maybe omitted, so that the pivotscrew 56 may be screwed into the coupling 55, thus shortening the post.

The feed-screw 5S is provided at a point between the ordinary running thread 6l and the machine-thread 62 with a smooth annular collar 59, said collar having a plurality of radial holes 60, adapted to receive a pin by which the screw may be rotated, if desired; but ordinarily I do not find it desirable to resort to this expedient of a pin for rotating the screw, because a feed-nut 63 is provided for engagement with the machine-thread 62.

That part of the feed-screw having a running thread 6l is screwed into the threaded socket l2 of the tubular body, while the remaining length of the feed-screw, having the machinethread 62, is fitted loosely in the tubular member 53 of the sectional center post. The feednut 63 is screwed on the threaded part 62 of the feed-screw to have bearing against the end of the tubular member 53 on the post, said post having a bearing against a part of the Work by means of the center pivot 56. By rotating the feed-nutI 63 the screw 58 may be advanced in order to move the tubular body and the drill toward the bottom of the cut in the work, and thus the bit may be kept in active relation to the work by proper manipulation of the feed-nut, which controls IIO the feed-screw,witl1out, however, rotating the Fig. l) may be used in any desired position, either horizontally, vertically, or inclined, on many different kinds of work; but a special merit of this part of the invention resides in the adaptability of the post and screw to interior work on steam-boilers, in which it is diihcult to use ordinary drilling appliances because of the narrow space therein.

Changes may be made in the form and proportion of some of the part-s whiletheir essential features are retained and the spirit of the invention embodied. Hence I do not desire to be limited to the precise form of all the parts as shown, reserving the right to vary therefrom.

Having thus described the invention, what I cla-im is 1. In a ratchet-drill of the class described, the combination with a socketed body having a ratchet, of a lever, a spindle carried by said lever, and a'pawl connected loosely with said spindle to operate independentlyofany movement thereof and lcapable of reversal with said spindle, substantially as described.

2. In a ratchet-drill of the class described, the combination with a socketed body having a ratchet, of a lever having a sleeved connection with said body, a spring-actuated spindle within said lever, and a spring-actuated pawl connected loosely with the spindle to operate independently thereof and capable of reversal therewith within said lever, substantially as described.

3. In a ratchet-drill of theclass described, the combination with a ratchet-formed body, of a hollow lever connected loosely with said body, a spring-actuated and slotted spindle having interlocking connection with the body and reversible therein, a pawl mounted loosely on said spindle and carrying a pin adapted to play in the slot of the lever, and a spring seated against the pawl and the spindle, whereby the pawl may operate ind ependently of any play o1" the spindle and is connected thereto for reversal therewith within the lever, substantially as described.

4. In a ratchet-drill of the class described, the combination with a ratchet-formed body, of a hollow lever having a sleeve connection therewith, a disk united to said lever by a threaded joint, a spring-seated key-pin connected to the lever and engaging a notch in the disk, a stop-screw engaging the pin, a spindle loosely mounted in the lever, and a pawl mounted loosely upon the spindle and movable independently thereof into and out of engagement with the ratchet-formed body, substantially as described.

5. In a ratchet-drill of the class described, the combination with a ratchet-formed body, of a lever loosely mounted thereon, a spindle carriedby the lever and reversible therein, a feed-pawl connected slidably to the lever to play or move thereon independently of any adjustment of the spindle, a pressurespring acting against said spindle to hold the same in interlocking engagement with the lever, another spring acting on the pawl to hold the latter normally in engagement with the ratchet on the body, a feed-screw connected operatively to said body, and means for rotating said screw, substantially as described.

6. In a ratchet-drill of the class described, the combination of. a body, a lever and ratchet devices for rotating the body by movement of the lever, of a sectional post having a removable center pivot adapted for interchangeable connection with the several sections of the post, and a feed-screw between said post and the body, substantially as described.

7. In a ratchet-drill ot' the class described, the combination with a body, a lever and ratchet devices, ofa sectional postincludinga hollow member, a feed-screw havingthreaded engagement with the body and fitted loosely to the hollow member of said post, a feed-nut seated against the post and having threaded engagement with the feed-screw, and a removable centeradapted for interchangeable connection with the sections of the post, substantially as described.

8. In a ratchet-drill of the class described, a sectional center post coinprisinga plurality of members, a removable center pi vot adapted for interchangeable connection with the several sections of the post, and couplings which unite the members separably together and connect the center' pivot to one member, in combination with a socketed body, means for rotating said body, and a feed-screw connected operatively with the body and said post, substantially as described.

9. In a ratchet-drill of the class described, a sectional post comprising a tubular member, a solid member, a removable center pivot adapted for interchangeable connection with the several sections ot' the post and threaded couplings between said parts, combined with a socketed body, means for rotating said body, a feed-screw having threaded engagement with the body and a loose engagement with the hollow member of the post, and a feed-nut threaded on the screw and seated against the hollow post member, substantially as described.

In testimony that I claim the foregoing as my own I have hereto alixed my signature in the presence of two witnesses.

ANDREIV KLAY.

IVitnesses:

R. B. DAY, HENRY L. ROMEY.

IIO

Images