US315149A - Levi lysander lamb - Google Patents

Description

UNITED. STATES PATENT OFFICE.

LEVI LYSANDER LAMB, OF AKRON, OHIO, ASSIGNOR TO THE W HITMAN 8t BARNES MANUFACTURING COMPANY, OF-SAME PLACE.

DRILLING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 315,149, dated April], 1885.

Application filed September 11, 1884. (No model.)

To all whom it may concern:

Be it known that I, LEVI LYSANDER LAMB, of Akron, in the county of Summit and State of Ohio, have invented certain new and useful Improvements in Drilling-Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in drilling-machines designed more especially for drilling the heads of mowing-machine knives and sickles for mowers, reapers, &c., the obect being to provide the sliding rest for the cutter-head with awrist or pin to fit the lateral bore of the head, and a ratchet-gage and pawl so arranged that the rivet-holes may be drilled accurately in the proper relative pos1ti0n to each other and to said lateral bore.

With this object in view my invention consists 1n certain features of construction and in combinations of parts, hereinafter described, and pointed out in the claim.

In the accompanying drawings, Figure 1 is a view in side elevation of aportion of a drillpress with my improvements attached. Fig; 2 1s a view in perspective of the table and attachments, with the slide-rest for the cutter-bar in position, and showing also the ratchet gage and pawl. Fig. 3 is a view in side elevation of the slide with a knife-head in position; and Fig. 4 is a View in perspective of one form of knife-head.

A represents the frame of the drill-press, having a rack, 64, engaging a pinion (not shown) on the shaft B, and provided outside of the bearing with a ratchet-wheel, B, pawl b, and crank 12, for raising and lowering the table 0.

Mounted in a suitable box in the upper part of the frame is the driving-shaft 'D, provided with the cone-wheel D and the pinion d, the latter engaging the pinion e of the spindle E, to the lower end of which latter is secured the drill e. The upper end of the spindle is provided with the sleeve E, threaded on the outside to engage threads in the part a of the 7 frame A, and to which is attached the handwheel E or the spindle may have attached any of the well-known devices for raising and lowering it to feed the drill.

The mechanism thus far described is of ordinary and well-known construction. The table O has the ways 0, on which slides the part F, which latter is actuated by the screw-rod F and the hand-wheel F. The part F has an upright part, f, that forms ways for the sliding restG. This part F also has a hollow upright post, f, in which slides the rod H, that is held in position by the set-screw h. The rod H is provided with a transverse slot, through which slides the bar H, and with a set-screw, h, for holding said bar in position. The forward hole, h, for the passage of the drill holds the drill steady, and prevents the same from being strained laterally. The part G has a latorally-projecting pin, that fits the lateral bore I of the knife and sickle-head I, and may have the block G, provided with the slot 9, through which the bolt that secures the block to the part G,'passes, and so arranged that the block G may be raised or lowered and brought into proper position to support the head I.

The part G is provided on its rear side with the gage J, having notches, as shown.

The part f has attached the arm K, provided with a long slot, k, through which the bolt k, that secures the arm to the partf, passes, and by means of which it may be adjusted as required.

To the arm K is pivoted the pawl L, that engages the notches on the gage J. The front end of the pawl is made heavy and serves as a counter-balance, and causes that point of the pawl to engage the said notches.

In manufacturing the knife and sickle heads it is essential that the holes be drilled to correspond to the holes in the knife and sickle backs to which the heads are attached, and also that the holes be .made in a given position relative to the bore I, so that when the knife and sickle heads and sections are all secured these part will all be in the exact position re quired to coact with the other parts of the machine.

The hole I is first made to fit the pin, wrist, or other device that connects the head with the connecting-rod or mechanism that reciprocates the knife-head. The head is then placed in position on the part G, with the pin 9 fitting snugly within the bore I. The notches on the gage correspond with the holes that are to be drilled in the head I, and the pawl L set by means of the slotted arm K so that the notches are in the required relative position to the pin g; The end hole near the bore I is usually bored first, and the part G is slid along by hand until the pawl L engages the next notch on the gage J. This brings the parts in position for drilling the next hole, and so on until all of the holes are drilled.

. After the parts are once adjusted any number of heads may be drilled with accuracy and dispatch. The bar H is placed close to the work, so that the drill is guided accurately.

The knives and sickles complete-that is, with the heads and sections attached-are usually made a specialty by some manufacturers, that supply the trade with these goods, and there are about as many different knife andsickle heads asthere are'reapers and mowers in the market. 7

A slide-rest, G, that will fit the part f is therefore made for each different kind of knife and sickle head, and has, with a pin, 9, to fit the respective lateral bore of the different head, and with a suitable gage. The pawl L has only to be adjusted for each head, and as these are usually made in larger quantities the adjustment of the pawls from time to time is but a slight hinderance.

Having fully described my invention,what I claim as new, and desire to secure by Letters Patent, is-

In a machine for drilling knife and sickle heads, a sliderest adapted to support the heads, and provided with a pin or equivalent device adapted to fit the lateral bore of the heads, and a gage with notches to correspond with the holes to be drilled, attached to said slide-rest, and an adjustable pawl to engage the said notches and act as a stop, the parts being so arranged that by the action of the pawl and gage the holes in the cutter-bar'head may be drilled in the proper position relative to each other and to the said lateral bore of the head, substantially as, set forth.

In testimony whereof I sign this specification, in the presence of two witnesses, this 2d day of September, 1884.

LEVI LYSANDER LAMB.

Witnesses:

ALBERT E. LYNCH, OHAs. H. Donna.

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