US685678A - Magazine spring-drill. - Google Patents

Description

Patented oct. 29, |901.

Z. T. FURBISH.

MAGAZINE SPRING DRILL.

(Application filed Feb. 2B. 1901.]

(No Model.)

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NIIED STATES PATENT OFFICES.

ZACI-IRY T. FURBISH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO NORTH BROTHERS MANUFACTURING COMPANY, OF PHILADELPHIA, PENNSYLVANIA, CORPORATION OF PENNSYLVANIA.

MAGAZINE SPRING-DRILL..

SPECIFICATION forming part of Letters Patent No. 685,678, dated october' 2e, 1901'. Application filed February 28, 1901f Serial No. 49,269. (No model.)

To all whom, it may concern/.-

Beit known that I, Z'AOHRY T. FURBISH, a citizen of the United States, residing in Philadelphia, Pennsylvania, haveinvented certain Improvements in Magazine Spring-Drills, of which the following isa specification.

The object of my invention is to so construct a spring-drill that the drill-bits can be carried in the handle of the tool. This object I attain in the following manner, refer ence being had to the accompanying drawings, in Which-- Figure l is a side View of my improved magazine spring-drill. Fig. 2 is a longitudinal sectional view showing the magazine closed. Fig. 3 is a view similar to Fig. 2, showing the magazine open. Fig.` 4 is a plan view on the line 4 4, Fig. 2; and Figs. 5 and 6 are views of details of my invention.

A is the cap of the handle, to which is attached the spindle B, having a spiral groove b, in which travels a nut c on the tubular stem C. Between the endof this spindle B and a plug e is a spring E, which tends to keep the tubular stem normally extended, as shown in the drawings. The stem C slides within a casing D, screw-threaded at its upper end and arranged to screw into the cap A, so that the cap, casing,- and stem are all secured together.

At the lower end of the tubular stem C is a chuck F, secured to the sleeve by a screw or pin c. This chuck may be constructed in any suitable manner to hold a drill-bit rigidly to the spindle;

Arranged to slide on the easing D is'a casing G, and this casing is reduced at its lower end, forming a neck g, which snugly lits the easing D, and this neck is screwethreaded.

H is a screw-threaded collar arranged to screw on the neck g of the casing G, and within this collar is a split spring-ring h. (Shown in Fig. 5.) The' ring is arranged to lit in a groove d in the casing D, so as to retain the casing G in its closed position. By simply unscrewing the collar H the ring will be released and the casing G can be moved down upon a casing D, so as to expose the drill-bits within the pockets t' between the casings G and D.

A ribbed frame I, made in the present iu stance of sheet metal, is shaped to form the pockets t', as illustrated in Figs. 4 and G', and

-it is bent to t snugly the casing G and around the collar H.

Supporting the drills is a platform J, having a tubular stem j, fitting the casing D, and between the platform and the reduced portion of the easing G is a spring J', which tends to project the ends of the drill-spindles beyond the casing G when the said casing is lowered, as in Fig. 3. In closing the casing to the position shown in Fig. 2 the spring J is compressed, so that. on releasing the casing by unscrewing the collar H the spring J will force the easing G down to eX- pose the drill-bits.

In order to prevent the handle turning when in its closed position, I notch the casing G at g and make a projection a on the cap A.

The cap A in the present instance is made in two pieces, ct' being the cap proper, having a serew-threaded portion which is screwed onto the portion a2, and the pins a extend into the portion a2, as shown in Fig. 2. The upper end of the vspindle is screwed into the portion a2 and has a shoulder, as shown, and there is a loose washer ai between this shoulder and the portion a2 of the cap.v

In the present instance the spindle B is hung within the stem from a pin b', mounted in the cap A, and there is sufticient play to allow the spindle to accommodate itself to the l nut c on the stem C.

The projection of the spindle is limited by a head b2 on the spindle B, and the nut c is held in place by a screw-plug c2, screwed into the end of the hollow spindle.

By the construction shown it will be seen that I am enabled to make a very simple and convenient spring-drill, in which the main spring and the rod with a spiral groove there; in is mounted within a casing, while the drill' bits are mounted in a second casing arranged to slide upon the first casing and to be held thereto and to a capepiece by a suitable clutch==in the present instance a split ring and screw-sleeve-zand the drill-bits are pro! -jected from the upper end of the casing'bya suitable spring,- so that the entire set of drills can be seen and the one desired selected. When the casing is closed, the tool is perfectly rigid and can be used as an ordinary spring-drill.

I claim as my inventionl. The combination in a magazine for drills, disc., of a central casing or support, a cap thereon, a magazine-casing arranged to slide on the central casing, and means for securing the magazine-casing to the central casing, substantially as described.

2. The combination in a spring-drill, of a casing, spring-drill mechanism within the casing, a second casing arranged to slide upon the irst casing and carrying the magazine for the drill-bits, an overhanging cap on the firstmentioned casing, and means for holding the magazine to the cap, substantially as described.

3. The combination in a magazine springdrill, of the casing, spring-drill mechanism within the casing, a magazine-casing arranged to slide upon the rst mentioned casing, means for securing the magazine-casing to the fixed casing, and a spring-platform arranged to project the drill-bits when the magazine is detached from the cap, substantially as described.

4. The combination of a casing, spring-drill mechanism within the casing, an overhanging cap secured to the end of the casing, a magazine-casing arranged to slide on the fixed casing, a screw-sleeve arranged to screw onto the end of the magazine-casing, a split ring mounted between the said sleeve and the casing and acting as a clutch to secure the magazine-casing to the fixed casing, said magazinecasing arranged to hold a series of drill-bits, substantially as described.

5. The combination of a spring-drill, a tubular casing, a tubular stein arranged to slide in said casing, a fixed spindle secured to the said casing and having a spiral groove therein, a nut engaging with said spirally-grooved spindle and secured to the tubular stem, and a spring mounted within the said stem, substantially as described.

G. The combination in a spring-drill, of a tubular casing, a tubular stem arranged to slide in said casing, a fixed spindle secured to the said casing and having a spiral groove therein, a nut engaging with said spirallygrooved spindle and secured to the tubular stem, a spring mounted within the said stem,- with a magazine-casing mounted on the outside of the fixed casing, and means for securing the magazine-casing to the ixed casing; the cap of the iixed casing forming the cap of the magazine, substantially as described.

7. The combination in a spring-drill, of a tubular casing, a spirally-grooved spindle hung loosely within the casing, a hollow stem arranged to carry a tool, a nut on said stem engaging the spindle, and a spring for projecting the stem, substantially as described.

8. The combination in a spring-drill, of a tubular casing, a cap thereon, a spirallygrooved spindle within the cap, a transverse pin from which the spindle is loosely hung, a hollow stem, a nut thereon engaging the spindie, and a spring for projecting said stem, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

ZAOHRY T. FURBISH.

Witnesses:

WILL. A. BARR, Jos. H. KLEIN.

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