US275885A - Hand drilling-machine - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

J. CHERNEY.

HAND DRILLING MACHINE.

Patented Apr. 17,1883..

ATTORNEYS.

N. Pilzns. Pmmumn nher. Wishingiom 11 c (No Model.) 7 2 Sheets-Sheet 2. J. CHERNEY.

HAND DRILLING MACHINE. No. 275,885; Patented Apr. 17,1883.

INVENTOR ATTORNEYS.

UNITED STATES PATENT FFICE...

J AOOB OHERNEY, OF DENVER, COLORADO.

HAND DRILLING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 275,885, dated April 17, 1883.

Application filed June 30, 1882. (No model.)

To all whom it may concern Be it known that I, JAooB CHERNEY, of

Denver, in the county of Arapahoe and State of Colorado, have invented a new and Improved Hand Drilling-Machine, of which the following is a full, clear, and exact description.

' My invention relates to improvements in hand drilling-machines; and it consists in the peculiar construction and arran gementof parts, as hereinafter fully described and claimed.

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

Figure 1 is a sectional elevation of my new hand drilling device placed upon the screw column or bar F in horizontal position for drilling a vertical hole. Fig. 2 is a plan view of the device, showing one of the hinged arms N open for removing the drill-holder, for removing the drill from the hole,for changing the drill, or for clearingtheholeofsand. Fig.3isafrontelevation of the fulcrum-plate D, in which the jointed lever G is fulcrumed. Fig.4 is a sectional plan view of the rubber packing E, placed in the drill-holder B for holding the drill. Fig. 5 is a perspective view of theclamp-plate to be placed in the yoke G for clamping the device to the said column or bar F. Fig. 6 is a side elevation of the device held in vertical position upon the column or bar for drilling a horizontal hole. Fig. 7 is a sectional elevation taken on the line :20 0c of Fig. 6; and Fig.8 is a detailed elevation, showing the jointed lever 0 arranged for operating the device by the 'foot.

In Fig.6 the lever is shown arranged for operating the device by the leg or knee of the driller.

The operative parts of the device are attached to the casting A, which is formed with the sleeve a, in which the drill-holder B, which holds the drill J ,is placed, and with the shank a, which passes through the yoke G. This yoke G is placed upon the screw-column or other bar or rod, F, which is adaptedto be fixed in the walls ofthe mine, or otherwise held firm, and is made fast thereto by means of the clamp-plates H and H and the set-screw h, as shown in Figs. 1 and 6, and the casting A is held and made adjustable in the yoke for setting the drill at diiferent positions by means of the set-screw I), which passes through the also made up of sections, as shown in Fig. 4-.

that is, of the larger part g, which is held in the section f of the holder, and the strip or section 9, which is secured by screws or other suitable means to the inner face of the section f of the holder. When the slidef and packing 9 are removed, the drill J may be put in place in the drill-holder, and the drill will be held by the compression of the rubber packing with suflicient firmness to cause the drill to be raised and turned when the holder is raised and turned, and forced home to the bottom of the hole being drilled when the holder is moved downward or forward. This packing also permits the drill to have a slight lateral movement to accommodate the jar and deflection of the drill in case the blow from the sledge is notdelivered true upon the drill. The drillholder B is raised and lowered (or forced backward and forward horizontally, as the case may be) by means of the foot or knee on the lever O, to the forward end of which lever it is attached by means of the pins 121) of the arms N N, which close under the collar P of the holder, and is revolved by means of this lever and the inclined slotted arm K, bolted to the sleeve 0, and the pawl-ring L, the pawl l of which engages with the teeth of the collared ratchet-wheel M, secured upon the drill-holder. The pawl-ring is placed loosely upon the collared ratchet-wheel M, as shown in Fig. 1, and is formed with the pin or stud k, which fits in the slot of the arm K, so that the arm K, being bolted fast to the side of the sleeve 0, acts as a cam to the stud and pawl-ring, causing the ring to partially rotate upon the collared ratchet-wheel M as the holder B is reciprocated, thus causing the pawl l to give the said ratchet-wheel and the drill-holder and the drill partial axial rotation at each upward movement of the drill-holder.

The lever O is fulcrnmed in the plate I), bolted to the outer end of the shank a, and is jointed, as above mentionedthat is, made up be operated either by the knee or foot of the operator.

When the device is arranged upon the column F so as to hold the drill perpendicular, or nearly so, the section a will be dropped down, as shown in Fig. 8,-for operating the device by the foot, the attachment j being arranged to form a stirrup to receive the foot, as illustrated in said figure; but when the device is arranged upon the column to hold the drill in horizontal position, as shown in Fig. 6, this section 0 will be bolted to the end of the section (I, in line therewith, to serve as an extension of the lever, to adapt the lever to be attached by means of the attachment 3" to the leg of the driller, so that he may conveniently reciprocate the lever backward and forward horizontally, between the blows delivered by the sledge, by a slight backward, and forward movement of the leg or knee. When the lever O is operated by the foot of the driller, the sections 0 and cl are of course reciprocated vertically in thefulcrum-plate D. This reciprocating movement of the leverC imparts, as above mentioned, reciprocating movement to the drill-holder through the arms N N, which are in this construction hinged to the forward end of the section 0 of the lever, as shown clearly in Fig. 2, so that by swinging these arms outward away from the sides of the section 0 by removing the bolts 8 s and loosening the bolts 8 s, which hold the arms N N to the sides of the section 0, the drill-holder B may be removed from the sleeve a and the drill removed from the hole being drilled in the rock for clearing the hole of sand.

The collar 1? is screwed upon the upper end of the drill-holder B, as shown in Fig. 1, and is milled out on its inner periphery, as shown at t, Fig. 2, so that by turning the collar until the milled portion comes in line with the sectionf of the cylinder this section may be withdrawn for removing and replacing the drill withoutcntirely rcmovin g the collar, and when the said collar is screwed to place and turned so that the milled-out part t comes out of line with the section f the said section will be securely locked in place by the collar, as will be clearly understood from Fig. 1. a

The section a of the lever (l is formed with a series of holes, a, so that the lever may be adjusted in the fulcrum-plate D to correspond with any adjustment of the shank a of the casting A in the yoke G, and the section d of the lever is formed with the series of holes d, so that when the device is operated by the foot the section 0 may be moved nearer to or farther away from the fulcrum-plate D to increase or diminish the vertical movement of the drill-holder B, as required, and by this means, when the device is operated by the leg of the driller, the lever may be shortened or lengthened, as desired.

The distance of rotation of the pawl-ring L at each movement of the drill-holder B may be regulated by increasing or diminishing the slant of the plate K, and thus thedistance of rotation of the drill between each blow may always be regulated to suit the quality of rock being drilled.

The clamp-plates H and H have considerable room in the yoke G, as shown clearly in Figs. 1 and 6, and by this means the deviceis made universal, or adapted to axial adjustment upon the screw column or rod F, so that it may be turned to several angles upon the column and held for action to bring the drill to the desired position for drilling the hole.

The rubber packing E is by preference made soas to form the ribs upon the inside, as shown in Fig. 4, so that the rubber will not much interfere with the downward thrust of the drill when struck by the sledge.

A treadle centrally fulcrumed to a suitable base may be connected to the end of lever-section 6 to substitute the stirrupj, Fig. 8, if desired.

It will also be understood that both horizontal and vertical holes, or holes at any intermediate angle, may be drilled, using the jointed'lever O, adjusted with either the foot or leg connectionj orj.

Thus constructed the device is adapted to hold the drill in any desired position, is easily operated, and enables one man to easily accomplish the whole work of hand-drilling, thus saving the labor and time of the helper.

1 am aware that a loose ring or collar provided with studs working in slots of a baseplate, and with a pawl engaging the ratchetteeth of a fixed ring, has heretofore been employed, and I therefore do not claim such invention.

Having thus fully described my invention, whatIclaim as new, and desireto secure byLetters Patent, is-

1. In a hand-drill, the combination, with the collar 1?, having the milled portion t, of the drill-holder B, consisting of the two partsff, the part f being provided with tongues on its edges, fitting into corresponding grooves of the part f, substantially as herein shown and described, whereby the drill can be removed without removing the collar, as set forth.

. 2. In a hand-drill, the combination, with the collar E, having the milled portion t, of the drill-holder B, consisting of the two partsff, the part f being removable, and the packing E, composed of two parts, g 9, corresponding to the parts of the holder, substantially as herein shown and described, whereby the section f of the holder and the section g of the packing can be removed without removing the 4. The combination, with the casting A, the

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TIS

drill-holder B, provided with the collar 1 and the loose ring L, provided with the stud k, of the lever (J, the pivoted arms N N, engaging with the collar of the holder, and the slotted arm K, substantially as and for the purpose set forth.

5. The combination, with the drill-holder B, provided with the ratchet-wheel M and the oollarP, of the loose ring L, provided with the stud k and the pawl l, the slotted arm K, and the pivoted arms N of the lever (l, engaging with the collar of the holder, substantially as and for the purpose set forth.

6. The combination, with the drill-holder B, the sleeve to, the shank a, and the yoke G, of

7. The lever 0, consisting of the sections 0 20 d e, the sections 0 d being provided with holes c d, in combination with drillholder and means, substantially as herein shown and described, for operating the drill-holder, as set forth.

JACOB OHEBNEY.

Witnesses:

P. W. TERRY,

H. STARKWEATHER.

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