US596910A

US596910A - Jacob bacich

Info

Publication number: US596910A
Authority: US
Publication date: 1898-01-04
Anticipated expiration: 1915-01-04

Description

(No Model.) l

J. RACICH.

RATGHET DRLL.

No. 596,910. Patented Jan. 4, 1898.

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UNITED STATES PATENT @Einen .IACOB'RACICIL OFl NEW YORK, N. Y.A

RATcHET-p'RILL.

SPECIICATION forming part of Letters Patent No. 596,910, dated January 4, 1898.

Application filed Tune 22, 189'?. Serial No. 641,841. (No model.)

T0 a'ZZ wzlom it may concern:

Be it known that I, JACOB RAcicH, of New York city, in the county and State of New York, have invented` a new and Improved Ratchet-Drill, of which the following is a full, clear, and exact description.

My invention relates to an improvement in portable drills operated by ratchet mechanism; and it consists in certain improvements by which the drill is operated while the handle is being moved in either direction.

The object of the invention is to provide drills of this character with mechanism which will rotate the drill while the handle is being moved in either direction, and also to provide such mechanism which will be of greater power than that commonly used for this purpose.

The invention consists of certain details which will be more particularly pointed out in the following specification and claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figure l is a side elevation of the device. Fig. 2 is a sectional elevation thereof. Fig. 3 is a plan view taken on the line 3 3 of Figi. Fig. 4 is a similar view taken on the line 4. 4 of Fig. 2. Fig. 5 is asection taken upon the line 5 5 of Fig. 2, and Fig. 6 is a section on the line 6 6 of Fig. 2.

The drill S is secured in any suitable manner within the socket A. In the drawings I have shown a thumb-screw a for securing the drill in place. Any mechanism for this purpose may, however, be used, as this feature forms no part of my invention. The socket A has a central bar A' extending above the saine and entering a hole in the sleeve E, and to the bar A is attached the ratchet-wheel C by any suitable means.

Immediately above the ratchet-wheel C and separated therefrom by the balls C', forming an antifriction-bearing, is a plate D, which extends to one side and upon which is mounted the fulcrum for the operating-lever. Upon the upper side of the plate D a collar A2 is fixed to the bar A', thus preventing the plate and the ratchet-wheel from separating sufficiently to allow the balls C to drop out of their groove. To the upper surface of the plate D is also attached by screws d the flange d 0f a sleeve D2. The inner surface of the sleeve D2 andthe outer surface of the sleeve E are correspondingly threaded, one screwing within the other, and these threads should be left-handed in order that the rotation of -the drill may be utilized to feed the saine serted through the slot e', thus locking the stem' and sleeve together and causing the sleeve to rotate with the stein A. The upper end of the sleeve E is enlarged into a toothed head E, which has a series of radial holes e, which may be engaged by a pin to feed the drill by hand, if desired. The up* per surface of the head E is provided with a circular groove adapted to receive the balls J2, which lie between this head and the foot J of the arm J, said head and foot being held together by a central screw J3. Theupper surface of the foot .I' is preferably roughened in order that it may securely engage any substance against which it may be placed in use.

The plate D upon its outer end has a sleeve D attached to or formed as 'a part thereof and extending parallel to the sleeves E and Dz-that is, parallel with the axis of the drill. Within the sleeve D is a second sleeve F, to the lower endof which is secured, by means of a bolt f, the head B of the operating-han dle B. These two parts may be made integral, or, as shown in the drawings, the handle B may consist of a pipe screwing upon the head B. Preferably the lower end of the sleeve F is somewhat reduced,for1ning a journal F' for the reception of the head B, which is secured to the journal F by means of a key f or other suitable fastening device. The head B has two pivots B2 and B3 located upon each side of its centerline and between the pivot F and the axis of the drill. To these pivots I22 and B3 are pivoted pawls or dogs l) h', provided with springs h2, holding their outer ends against the ratchet-wheel C.

It will thus be seen that one of the pawls IOO or dogs l) b will operate to turn the ratchet- Wheel in whichever direction the handle is moved. `When the handle is moved in one direction, the dog h will engage the ratchetwheel to turn it, and when the handle is moved in the opposite direction the dog b' will engage the ratchet-wheel to turn it While the other dog is being withdrawn for a new hold. These dogs in their operation act on the same principle as a toggle-joint, thus producing a powerful actuating mechanism.

The sleeve F contains a rod G, which is centrally slotted at G throughout a greater vportion of ,its length. Vithin the slot Gr extends a pin g, which also passes through the flange upon the upper end of the sleeve F, thus locking the sleeve and rod together, but permitting their extension. To the upper end of the rod G is attached a lever II by means of a set-screw H2 or any other suitable device. The project-ing arm of the lever H is provided with a slot H', and a dog or pawl I is secured therein by means of a thumb-screw h, The pawl I has its outer end held in engagement with the toothed head E' by means of a spring I. As the sleeve F oscillates at each oscillation of the handle B', the arm H will oscillate in a similar manner. The pawl I, engaging the teeth upon the head E', will operate to turn the same, and thus to actuate the feed by revolving the sleeve E. The amount of this revolution may be regulated by adjusting the location of the thumb-screw 71,. W'hen the thumb-screw is moved to the outer end of the slot I-I, the feed will be greater than when it is moved close to its inner end. In this manner the feed may be regulated to any desired extent. The feeding may be done either by hand, using a pin which is made to engage the holes c in the head E', automatically by using the arm H and pawl I, or by locking the stem A and the sleeve E together by means of the pin e3. It is therefore possible to secure considerable variation in the rate of feed, and the device may be set at such feed as is best adapted to the particular circumstances.

It is evident that the mechanism herein described for rotating the drill may be utilized for rotating shafts where it is desired to use the oscillating motion of a lever. It secures a nearly constant rotation of the shaft and enables considerable power to be applied for this purpose, due to the toggle-joint structure formed by the head B and the dogs b and Z9.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A ratchet-drilloperating mechanism, comprising a ratchet-wheel connected to the drill-socket, an operating-lever pivoted at one side of the axis of the drill, double pawls pivoted to said lever upon opposite sides of its center line, and a positively-operating adj ustable feed mechanism actuated from said lever, substantially as described.

2. A ratchet-drilloperating mechanism, comprising a ratchet-wheel connected to the drill-socket, an operating-lever pivoted at one side of the axis of the drill, double pawls pivoted to said lever upon opposite sides of its center line, a back-pressure foot, a threaded cylinder and sleeve, one engaging the drillsocket and the other the back-pressure foot, and means for rotating either the cylinder or the sleeve from a handle-lever, substantially as described.

3. A ratchet-drill-operating mechanism, comprising a ratchet-wheel connected to the drill-socket, an operating-lever pivoted at one side of the axis of the drill, double pawls pivoted to said lever upon opposite sides of its center line, a back-pressure foot, threaded sleeves, one engaging the drill-socket and the other the back-pressure foot, a toothed feedwheel upon one of said sleeves, and a pawl engaging said feed-wheel and operated from a handle-lever, substantially as described.

4'. A ratchetdrilloperating mechanism, comprising a ratchet-wheel connected tothe drill-socket, an operating-lever pivoted at one side of the axis of the drill, double pawls pivoted to said lever upon opposite sides of its center line, a back-pressure foot, threaded sleeves, one engaging the drill-socket and the other the back-pressure foot, a toothed feedwheel connected to the latter, a telescopic rod connected to the handle and the back-pressure foot, a slotted arm carried by the outer section of said rod, and a pawl adj ustably pivoted in said slot and engaging the feed-wheel, substantially as described.

`5. Ahand-drill-operating mechanism, comprising astationary frame, adrill-socket j ournaled therein, means for rotating said socket including an oscillating lever pivoted upon said frame by a pivot parallel to and at one side of the drill-socket, and positively-operated adjustable feeding mechanism actuated from said lever, substantially as described.

6. Ahand-drill-operating mechanism, comprising a drill-socket, means including an oscillating lever pivoted to one side of the drillsocket for rotating said socket, a threaded z sleeve forming a part of the drillfeeding mechanism, a ratchet-Wheel attached thereto, a shaft forming an extension of the leverpivot in the direction of the sleeve, an arm attached to its outer end, and a pawl attached thereto and engaging the ratchet-Wheel, substantially as described.

7. Ahand-drill-operating mechanism, comprising a drill-socket, a threaded sleeve forming a part of the feeding mechanism, means for rotating the drill including a lever pivoted to one side of the drill-socket, an axial shaft extending from said lever in the direction of the threaded sleeve, an arm connected to its outer end, and step-by-step rotative means acting upon the threaded sleeve and actuated from the said arm, substantially as described.

8. Ahand-drill-operatingmechanism, comprising a drill-socket, a threaded sleeve form- IOO log

IIO

ing 2t part of the feeding mechanism, means ed sleeve and rotated by the said paiwl, subforrotating the drill including a. lever pivoted stantially as described.

to one side of the drill-socket, an axial shaft D L extending from said lever in the direction of JACOL RAGICH' the threaded sleeve, a slotted arm xed to the Witnesses;

outer end of said shaft, et pawl adjustable in EVERARD BOLTON MARSHALL,

said slot, and amtehetwheel upon the thread- II. L. REYNOLDS.