US81769A - Feank glasses - Google Patents

Description

. @auch tetes: strntj @fitta YFRANK Gilissen, or MYSTG BRIDGE, CONNECTICUT@ Leners Parent 1v.` 81,769, ,dans september 1,186.8.l

IMPROVEMENT 1N muLLs.

TO ALL' WHOM IT MAYCONCERN: v v

Be it known that I, FRANK GLAssER, ofMystic Bridge, in the county of New London, vin the State gf Connecticut, have invented certain new and useful Improvements in Machines or Tools for Drilling.; and I do i hereby declare that the following is a full and exact description thereof.A l

My invention is intendedvfor drilling after the manner of an ordinary ratchet-drill or brace-drill. Itcan drill iron, or any materialcapable of being treated with a. revolving drill with the ordinary driving or press'- ing force. l

My improvement consists ot' a ratchet and breast-drill united, so that the same compound tool may be used for one`or .the other, as circumstances may require.

I will proceed to describe what I consider the best ineans of carrying out my invention, and will afterwards designate the points whichI believe to 'be new.

The accompanying drawings form a part of this specification. y

Figure 1 is a 'view of the entire tool at right angles to the axis of the operating-wheel.

Figure 2 is a view in the lin'e of the said axis. l i' l Figure 3 is n. view in the same line from the opposite side, the operating-handle and restfor the breast alone having'been changed in position. i I

Similar letters o'f reference indicate like parts in`all the figures. i

Tints are employed merely to aidvin distinguishing parts, and do not imply d ierences of material. Y The material of the whole may be 4iron and steel.

A is the frame, of malleable cast iron. Itis provided with a handle, a, which is grasped by the left hand of the operator to steady it, while the breast of the operator, or 'other' convenient force, is applied against the rest A. -This rest is fitted, upon the frame A, so that it may swivel freely, as will be readily understoo'd. B- is a shaft, which is supported in bearings in the frame A. An operating-lever, D, is firmly fixed at one end-to the outer face ofv the 'bevel-wheel C; and at `the other end of 'this lever D, a screw, E, is fixed means of a pivot, and the handle G is applied to the screw E. The outer end of the lever D .has rectangular faces, as represented. The screw 'E may beturned so as to stand either in line with the lever D, as indicated in 3,i or at right angles, as indicated in fig. 1; i To eiiect a change of position, thehandl'e G is unscrewed a little ways on the screwfl E, as indica-ted in iig. V'1. In this condition the handle may be changed to assume either positionjrequired, and then,by screwing the handle down tightly on the screw E, the parts are adjusted ready for use.

It will thus he seen that the handle can serve either as an extension of the straight lever D, .and thus increase thc leverage for giving motion to the wheel C, or it maybe adjusted in the manner ot'- a crank, so as' -to be in position for conveniently turning the wheel() with a. reduced leverage. `I adjust the handle in either lposition, according as the wheel C is required' to be turned continuously around in one direction, to operate the drill as a breast-drill, or to be reciprocated backwards and Aforwards through a quarter or someother portion of va circle, after the manner of a ratchet-drill. i i

The parts which communicate motion from the wheel C to the shaft B areadapted to turn the shaft'in the same direction without any adjustment, whether the wheel Q be turned continuously or be reciprocated. There are two gear-wheels, H1 and H3, mounted loosely on the shaft B, these wheels being bothl always, when geared with the wheel C, necessarily turned in opposite directions one to the other on the shaft BL Each is provided' in a face with ratchet-teeth hl asprepr esented. AThese teeth match to corresponding teeth in blocks Il I2, which are fitted on the shaft B by means of a spline-and feather, that each may move endwise on the shaft B, but is not capable of revolving thereon. This is a construction familiar'to mechanics, and is shown by section inl Figure 1. t Goiled springs, JI J, encircle the shaft B, as represented, and exert a constant force,-tending to urge the blocks If Izinto intimate contact with the wheels H H2. Y

In operating rnyim'proved tool as a breast-drill, the breast being applied against the rest A', and the left hand rmly holding the fixed handle a, the changeable handle G is'adjusted firmly inV the position of a crank,

as indicated in figs. 1 and 2, and the wheel C is turned by this means continuously around and around. In this mode of operating the device, the wheel H2 locks continuously with the block I, and gives avcontinuous rotary motion to the shaft B, while the wheel Hl revolves-idly in' the opposite direction, and the block Il slides axially on the shaft B, to allow each tooth of the ratchet h1 to pass. This motion continues, the ratchet h1 clicking idly against the block '11, so long as the tool is used in this manner.`

When it becomes desirable, for any reason, to change the action of my tool to that of.a'ratchetdrill, the handle G is loosened by unscrewing slightly, then turned into'a straight position, in line with the lever` D., and again screwed tight, as indicated in fig. 3. It is now reciprocated,'as indicated in fig. 3, causing the wheels HIand H2 to come into play alternatcly,'and to impart motion to the shaft B; that is to say, when the handle is moved in one direction, the wheel Hz imparts motion to the Ashaft B by the means and in the same manner as before described. At the end of the motion'of the handle G in o ne direction, all theparts come to rest. 0n commencing. the return-motion of the handle G, the wheel C turns in an opposite direction, and the wheel Hl -imparts motion to the shaft B, in the same direction as before, through the aid of thc 'teeth hlfand the block Il;

and during this half reciprocation of the handle, the wheel H2 revolves idly in a direction opposite to the motion of the shaft'B.v In this condition of the parts, the ratchet 71. andy the block I click idly together, and thus the N drill B is rotated in the same direction, and with precisely the ordinary effect ofa breast-drill or a ratchet-drill,

as the convenience of' the operator or the necessities of the situation may require.

My improved drill may also be worked as a single-acting ratchet. This is donc by keeping the handle G at right angles with the shaft B, and twisting it and the entire frame A backward and forward in the direction the drill is to move. Both of the clutches are in gea/r during the forward motion. During the backward motion both of the clutches slip, and the drill is stationary during this half of the motion, which makes it the same as the ordinary common single-acting ratchet. v u

It is frequently the case that the contracted space, or other circumstances, where a hole is to be produced, will`necessitate the use of the tool as a ratchet-drill. In all such situations, in addition'to the twisting about of the whole frameas above suggested, the adjustment and operation indicated inig. 3 may be used, and the pressure, forcing the drill to its work, may, in such cases, be applied either by the breast, or a lever, or other convenient force.

In cases where the space will allow the forming of complete revolutions ofthe wheel C, it will generally be preferred to adjust the machine in the manner indicated in figs. 1 and 2, and to give the operating .parts complete and continuous revolutions.

Some degree of advantage may be derived from the use of the other parts of my invention, without the peculiar adjustable handle D E G. So, also, some degree of advantage may be derived from the use of this handle in connection with a ditierent construction of the other parts. I much prefer, however, the use of all the parts together, as here represented and described. y

Having now fully described what may render clear my invention, I would expressly disclaim as new any combination, arrangement, or specific part not'hereinafter mentioned, and only desire to secure yby Letters Patent as follows:

,The adjustable lever, attached to the drill-stock, as described, and consisting of the pivoted handle Gr, screw E, and fixed arm D, all operating as set forth.

' FRANK GLASSER.

Witnesses:

Gao. W, MALLERY, E. P. RANDALL.

Images