US287866A

US287866A - Portable drill

Info

Publication number: US287866A
Authority: US
Publication date: 1883-11-06
Anticipated expiration: 1900-11-06

Description

(No Model.) 3 Sheets-Sheet 1.

W. SANDIFORD.

PORTABLE DRILL.

No. 287.866 Patented Nov. 6, 1883.

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W. SANDIFORD.

- PORTABLE DRILL.

No. 287.866. Patented Nov. 6, 1883.

Q (N0 Model asneem-sneet a.

W. SANDIPORD.

PORTABLE DRILL.

Patented N016, 1883.

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. Totall whom it may concern:

UNITED STATES s PATENT ,OFFIGE,

WILLIAM'SANDIFORD, or Jonrnr, I LrNoIs.

PORTABLE, D/RI'LL.

SPEGIFICATIONfm-mingpartof Le tters Patent No. 287,866, dated November 6, i883.

I Application filed .May 15.1883; (No model.)

. cipally, in the construction of the frame, by

means of which the drill can be clamped to a column in such manner that the drill may be pointed in any direction by means of a universal joint, which supports the drill-stock, and so that its attachment to the column is of such character and strength that any amount of pressure can be brought, to bear on the drill against the face or side of the column.

Referring to thedrawings, 1? represents a column to which the drill-frame is attached.

A pair of parallel bars, a, having hooks t t at their outer ends to hook behind the column, and boxes a a at their inner ends, through which the square bar or rod A passes, are held against the sides of the column by means of the hooked bolts 0 0, link 0', and nuts n n,

the set-screws d d having been first tightened sufficiently to prevent said bars a a from being parts are held together bya screw, 1", so that brought together at their inner ends by said rods 0 c and nuts "It n. By this arrangement the bars a a are clamped against the sides of the column, and form a support to sustain the drill on the horizontal bar A.

D is a metal sleeve that sleeves on over the horizontal bar A and into the box D, so that it can slide along on said bar A to any place desired, and will permit box D to move around it oron it as a spindle. The box D is split at the side toward the column, and the two by said screw such frictional contact may be given said box D on said sleeve D that it will not move thereon when not desired. The sleeve drill on its work will prevent the sleeve D .the nut an on the end of said spindle.

7 over each other.

' from sliding out of place. The box D is provided at its rear side with an integral standard, B, having acentral Vertical aperture for the reception of the shaft B which terminates at its upper end 'in the threaded box B, and is provided at its lower end with the nut m to tighten it in said standard B, so it may not rotate therein when not desired. The box B supports thedrill-spindle 3 which passes through it and through the hollow screw S, which screws'through said box B.

; The hollow screw S is for the purpose of carrying the drill forward and holding it to its work by turning up said screw by means of the handles S The foot of the drill-spindle y is enlarged to receive the square end of the drill or tool, and to form a shoulder, T for the hollow screw S to bear against to hold the tool against its work. The rear or outer end of the drill-spindle has the nut m, which holds the crank L, which is sleeved on the drillspindle, from falling off. The hub g of the crank L sleeves on the outer end of the drillspindle and rotates thereon. The drill-spindle y and at'its inner end the crank-sleeve g are provided with a pair of disks, and- 9 the faces of which are provided with ratchet-teeth cut in opposite directions, so that they will engage with each other when the crank L is turned forward. When the crank L turns forward,the offsets will engage with each other and rotate the drill-spindle,

and withit the drill. 'Thesleeve 9? has its outer end bored or hollowed out, forming a chamber between its inner walls and spindle y, for the reception of the coil-spring b, which coils on said spindle, and is held in place by This spring 7) holds the ratchet-faces of the parts g and g in contact, so their teeth will engage with each other. When the crank L turns 1) in the sleeve 9 will permit the offsets to slip drill may be'given a partial rotation by the crank when it is desired to use the drill in such place that the crank cannot be rotated entirely around, as ina corner or near the sideof a building, &c. The hub g is a portion of andintegral with the disk 9, and both backward, the compression of the coil-spring By this arrangement theare firmly keyed to the drill-spindle. By this arrangement the drill is supported on what may be termed a universal joint, so that it may be adjusted to point and operate in any desired position or direction.

The box D may be set along on the square bar or rod A at any place, and outside of the bars a, when desired, out near the end of the said bar A. The drill may be turned to point directly downward, so it can be used as an ordinary vertical drill. The long slots z in the bars to enable the hooked rods 0 to be set any place along in said slot; and where the column is very small, so the hooks t t cannot hold on it, another bolt may be passed through the slots near their outer ends, outside the column, so as to clasp the outer ends of said horizontal bars against the column, to hold firmly against it.

Having thus described 1nyinvention,what I claim as new, and desire to secure by Letters Patent, is as follows, to wit:

1.. The combination of the slotted bars a a, square bar A, hooked bolts 0 0, link 0, boxes 13 B and D, sleeve D, shaft 13', drill-spindle y, feed-screw S, ratchet-plates g coil-spring b, set-screws (Z (Z, and crank L, all adapted to operate as and for the purpose set forth.

2. ,In the portable drill described, the mechanism for varying the direction of the point of the drill, in combination with the feed-screw S,ratchet-p1ates 9'9", and crank L, all adapted to operate as and for the purpose set forth.

3. The combination of the box D, having theintegra-l standard B, shaft B integral with threaded box B, horizontal bar A, and drillspindle 3 all adapted to operate as and for the purpose set forth.

XVILLIAM SANDIFORD.

XVitn esses:

\VM. J. HU'roHINs, Tnos. H. HUTonINs.